CN220423280U - Bottom cover, knob, winding shaft, rope turnbuckle, shoes and articles - Google Patents

Abstract

According to the bottom cover, the winding shaft is limited by the axial direction and the radial direction of the clamping jaw at the same time, and the winding shaft rotates stably and smoothly and is not easy to shake; the elastic claw arm and the bottom side wall are staggered on the ring surface, so that the upper and lower demolding processing is facilitated, the ring surface is more inwards than the bottom side wall, the integrally formed elastic claw arm can directly limit the winding shaft in a firmer axial direction, simultaneously, the outward claw teeth and the inward button teeth are convenient to be directly matched above the winding shaft, the button teeth and the button side wall can be folded inwards, the button side wall can be close to the bottom side wall for running, the structure is compact and stable, sundries are prevented from entering to influence the running of an internal mechanism, simultaneously, the outer side of the outwards arched elastic claw arm is propped and reinforced, the compressive strength of the elastic claw arm is ensured, the winding shaft and the knob limit the claw up and down, the claw cannot be bent upwards or broken downwards due to stress, and the lasting and stable running of the mechanism is ensured. The utility model also provides a knob, a winding shaft rope turnbuckles, shoes and articles.

Description

Bottom cover, knob, winding shaft, rope turnbuckle, shoes and articles

Technical Field

The utility model relates to the field of daily life, in particular to a bottom cover, a knob, a winding shaft, a rope turnbuckle, shoes and articles.

Background

The opening parts of articles such as shoes, clothes, backpacks, hats, protective equipment and the like are usually provided with rope articles such as rope belts and the like for tightening or loosening, and at present, people fix the tightness of the rope articles in a knotting mode, so that the operation is complex, inconvenient, easy to relax and not concise and attractive.

In order to solve the problems, chinese patent No. 201820751299.8 discloses a lacing system based on a rotor and a stator, which comprises the rotor and the stator, and is characterized in that the stator comprises a stator main part and an expansion bracket, the stator main part, the rotor and the expansion bracket are sequentially connected in a matched manner, the rotor is provided with a wire winding groove and a wire threading hole along the circumferential direction, the rotor or the stator main part is provided with teeth, and the stator main part or the rotor which is connected in a matched manner is correspondingly provided with a pawl; the stator is provided with a gear structure, and the pawl and the teeth are connected in a meshed or separated mode through the gear structure. The stator main part and the expansion bracket are fixedly connected through screws or a buckle structure. The gear structure is one of fixed gears and elastic gears. The fixed gear comprises a gear protrusion and a check ring which is correspondingly arranged. The elastic gear comprises an elastic foot and a check ring, wherein the elastic foot comprises a root and an elastic body, and at least one limiting groove is formed in the outer side face of the elastic body and used for limiting the check ring. The expansion bracket has a module cavity for receiving a functional module and a power supply. The matching connection surface of the rotor is provided with teeth, and the matching connection surface of the stator main part is correspondingly provided with pawls. The matching connection surface of the stator main part is provided with teeth, and the matching connection surface of the rotor is correspondingly provided with pawls. The lacing system still includes the lid, the lid pass through the buckle with the rotor cooperation is connected, the lid includes the holding chamber, the holding chamber is including being ladder distributed's first inner chamber and second inner chamber, first inner chamber is used for the module chamber part of holding extension bracket, and first inner chamber inner wall is close to ladder department and has seted up the ring channel along circumferencial direction, the even interval of ring channel along circumferencial direction is provided with buckle structure for with rotor embedding connection. The lacing system based on the rotor and the stator comprises the rotor and the stator, and is characterized in that the stator only comprises a stator main part, the rotor comprises an upper cover, a ratchet wheel and a winding groove which are sequentially and fixedly connected from top to bottom, teeth are arranged on the stator main part, and pawls are correspondingly arranged on the rotor; the stator main part is provided with a spring catch pin, and the teeth and the pawl are in engagement or separation connection through the spring catch pin.

The utility model solves the problem of manually tying shoelaces to a certain extent by means of winding and unwinding rope objects through the knob, but has complex structure, looseness, complex processing and assembling procedures, high cost, insufficient strength, and insufficient working stability and smoothness, and most accessories need a plurality of groups of complex dies for demolding, so that the cost is high, the efficiency is low, especially, loose gaps exist between the knob and the side wall of the seat, fine impurities such as dust, sand and the like easily enter the interior to influence the working stability and the service life of each part, and if the parts such as the matched parts of each tooth, the action gaps and the like can be blocked or blocked, the normal work and even the damage can not be caused.

In view of this, the present inventors have conducted intensive studies on the above problems, and have produced the present utility model.

Disclosure of Invention

The utility model aims to provide the bottom cover which is easy to demould, simple in processing and assembling procedures, low in cost, firm and compact, dustproof, sand-proof, durable, stable and smooth in working performance.

The utility model aims at providing a knob which is easy to demould, simple in processing and assembling procedures, low in cost, firm and compact, dustproof, sand-proof, and durable, stable and smooth in working performance.

The winding shaft is easy to demould, simple in processing and assembling procedures, low in cost, firm and compact, dust-proof, sand-proof, durable, stable and smooth in working performance.

The utility model aims at providing the rope turnbuckle which is easy to demould, simple in processing and assembling procedures, low in cost, firm and compact, dust-proof, sand-proof, durable, stable and smooth in working performance.

It is a fifth object of the present utility model to provide a shoe using a cord clasp and having the aforementioned effects.

A sixth object of the present utility model is to provide an article using a rope-like turnbuckle and having the aforementioned effects.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

a bottom cover comprises a bottom main body, wherein the bottom main body comprises a bottom side wall, the direction facing a knob is the upper direction, and the opposite direction is the lower direction; the clamping jaw is arranged on the bottom side wall and integrally formed in an area above the lower end of the bottom side wall; the claw comprises an elastic claw arm and claw teeth, the elastic claw arm extends along the axial direction of the winding shaft, and the claw teeth are formed on the elastic claw arm and face the outer ring; the elastic claw arm is in an outwards arched arc shape, and the ring surface where the elastic claw arm is located is closer to the axis of the winding shaft than the ring surface where the bottom side wall is located.

The ring surface where the elastic claw arm is positioned at the inner ring surface where the bottom side wall is positioned.

The projection of the elastic claw arm on the plane perpendicular to the winding shaft axis is positioned on the projection inner ring of the bottom side wall on the plane perpendicular to the winding shaft axis.

The claw is provided with an accommodating space for accommodating the winding shaft between the claw and the lower end of the bottom side wall.

The claw is formed at the upper part of the bottom side wall.

More than two jaws are arranged around the axis of the winding shaft with the free ends facing the same.

Two, three or four jaws are uniformly arranged around the winding shaft axis.

The claw teeth are formed at least at one of the outer ring side and the end portion of the elastic claw arm.

The elastic claw arm and the inner side of the bottom side wall are provided with a claw gap.

The jaw gap has dimensions into which the annular tooth wall and the button teeth of the knob extend.

The jaw gaps form a bottom ring groove for the annular tooth wall and teeth of the knob to extend into the full circle of rotation.

The width of the jaw gap is greater than the sum of the thickness of the annular tooth wall of the knob and the tooth height of the button tooth.

The elastic claw arm is provided with a claw free end capable of swinging inwards and outwards and a claw root connected with the inner side of the bottom side wall.

The claw root is connected with the inner side of the bottom side wall through a root connecting part.

The root connecting part is connected to the lower part of the elastic claw arm.

The pawl tooth is at least partially higher than the root connection.

The pawl tooth is integrally higher than the root connecting part.

The resilient claw arm is at least partially above the root connection.

The elastic claw arm is integrally higher than the root connecting part.

At least one of the claw root portion and the root connecting portion has a root protruding portion protruding toward the inner ring.

The height of the protruding part of the root protruding part protruding towards the inner ring is more than or equal to the tooth height of the claw teeth.

The root protruding part of each claw forms a radial limiting space for the upper shaft part of the winding shaft to extend in.

The distance between the elastic claw arm and the upper shaft part of the winding shaft is larger than or equal to the tooth height of the claw teeth.

The root connection portion gradually widens from the root of the pawl to the inside of the bottom side wall.

An inner bulge is formed on the inner side of the bottom side wall.

The inner protrusion corresponds to the elastic claw arm.

The upper surface of the inner protrusion is flush with the upper surface of the root connection.

The lower surface of the inner protrusion is flush with the lower surface of the root connection.

The inner protrusion extends along an axis surrounding the winding shaft.

The inner protrusion is lower than an upper surface of at least one of the resilient pawl arm and the pawl tooth.

The inner projection is lower than at least one of the resilient pawl arm and the pawl tooth.

A forming notch is arranged between the inner bulge and the adjacent root connecting part.

The forming notch corresponds to at least one of the inner clamping part and the claw teeth up and down.

An inner clamping part for clamping the winding shaft is formed at the lower part of the bottom side wall.

The inner clamping part is a step protruding towards the axial direction of the winding shaft.

An axial limiting space for limiting the vertical direction of the winding shaft is formed between the inner clamping part and the root connecting part.

The lower part of the inner clamping part is provided with an inclined plane for clamping the winding shaft.

The bottom side wall is provided with an elastic swing arm capable of swinging inwards and outwards, and the inner clamping part is formed at the inner side of the elastic swing arm.

A gap is formed between the elastic swing arm and the main body part of the bottom side wall.

The upper end of the bottom side wall is provided with a protruding wall higher than the root connecting part.

The protruding wall is higher than the elastic claw arm.

The protruding wall has a wall protruding portion protruding into the button ring groove.

The maximum depth of the wall extending part extending into the button ring groove is larger than the distance for pulling out the knob when the rope object is loosened.

The elastic claw arm is provided with an arm projection extending downward.

The arm projection is formed on the lower surface of the elastic claw arm and extends toward the winding body of the winding shaft.

The lower end of the arm projection is higher than or flush with the lower surface of the root connection.

The protrusion height of the arm protrusion is less than or equal to the thickness of the root connection portion or the inner protrusion.

The arm projection is formed between both ends of the elastic claw arm and at least one of the claw free ends.

The distance between the arm bulge and the upper shaft part of the winding shaft is larger than or equal to the tooth height of the claw teeth.

The distance from the outer ring side surface of the elastic claw arm to the bottom side wall is equal, or the distance from the claw root to the claw free end gradually approaches to the bottom side wall.

The elastic claw arms are equidistant from the bottom side wall or gradually approach the bottom side wall from the claw root to the claw free end.

The claw teeth are formed on the outer ring side of the claw free ends.

A tooth wall gap is arranged between the claw teeth and the inner side of the bottom side wall.

The elastic claw arm gradually extends from the claw root to the claw free end towards the object screwing direction.

The claw teeth are provided with tooth root parts and tooth tip ends, and gradually incline towards the object screwing direction from the tooth root parts to the tooth tip ends.

The claw teeth are provided with tooth root parts and tooth tip ends, each claw tooth comprises a tooth clamping surface facing the rope screwing direction and a tooth smooth surface facing the rope loosening direction, and the tooth smooth surface gradually inclines towards the rope screwing direction from the tooth root parts to the tooth tip ends.

The plane of the tooth clamping surface gradually inclines towards the object screwing direction of the rope through the axis of the winding shaft or from the tooth root to the tooth tip.

The outer ring side of the same elastic claw arm is provided with more than two claw teeth.

The bottom side wall comprises a bottom extending part extending into the containing space of the connecting seat and a rope passing part corresponding to the corresponding wall of the connecting seat.

The bottom side wall is formed with a rope passing portion opposite to the rope passing portion.

The rope passing part corresponds to the rope passing part and is positioned at two sides of the winding shaft.

The rope passing part comprises a rope passing hole formed on the side wall of the bottom cover.

The rope passing hole has a size for passing the rope clamping head.

The outer peripheral surface of the bottom side wall is formed with a convex ring.

Convex ring and through rope portion and rope passing the rope part is at least equal in height.

The rope passing part is formed on the convex ring.

At least one of the upper surface and the lower surface of the convex ring is a plane.

The convex ring is provided with a ring notch corresponding to the rope passing part.

A knob comprising a knob body; the button main body comprises an annular tooth wall which extends towards the bottom cover and corresponds to the clamping jaw, the annular surface where the annular tooth wall is located is closer to the axis of the winding shaft than the annular surface where the bottom side wall is located, and button teeth which face the clamping jaw are formed on the inner ring side of the annular tooth wall.

The size of the annular tooth wall extending into the bottom ring groove of the bottom cover is smaller than the distance for pulling out the knob when the rope object is loosened.

The button body includes a button top wall and a button side wall.

The ring surface where the annular tooth wall is positioned at the inner ring of the ring surface where the bottom side wall is positioned, and the annular tooth wall is formed on the inner side surface of Niu Dingbi.

The distance from the root of the button tooth to the axis of the winding shaft is smaller than or equal to the distance from the tip of the claw tooth to the axis of the winding shaft.

A button gap is provided between the annular tooth wall and the button side wall.

A button ring groove for limiting the extension part of the wall to extend is formed between the annular tooth wall and the button side wall.

The depth of the button ring groove is larger than the distance for pulling out the knob when loosening the rope.

The button ring groove has an inner ring groove wall corresponding to the inner ring side of the wall-extending portion, and an outer ring groove wall corresponding to an outer ring side of the wall protruding portion; the inner ring groove wall is parallel to the inner ring side of the wall extending portion, and the outer ring groove wall is parallel to the outer ring side of the wall extending portion.

The outer race groove wall extends to the lower end of the knob sidewall.

The pivot axis of button roof is equipped with the button post that stretches into winding shaft hole downwards.

The buttonhole comprises a main body at the upper part and a clamping ring at the lower part.

The clamping ring comprises an upper clamping ring positioned above and a lower clamping ring positioned below.

The diameter of the upper clamping ring is smaller than that of the lower clamping ring.

The diameter of the upper snap ring is smaller than the diameter of the column main body.

The diameter of the lower clamping ring is smaller than or equal to the diameter of the column main body.

An upper neck is formed between the upper snap ring and the knob post.

A lower neck is formed between the lower clamping ring and the upper clamping ring.

The edge of the upper clamping ring is provided with a smooth inclined surface for the arm clamping block of the winding shaft to slide through.

The lower clamping ring is provided with a ring anti-falling clamping surface which faces upwards and clamps the arm clamping block.

Ring anti-falling clamp the surface is vertical in the plane of the buttonrod axis.

The lower end of the lower snap ring is provided with a downward ring inclined plane which gradually inclines towards the axis direction of the knob post from top to bottom.

The upper clamping ring and the lower clamping ring are all whole rings.

The buttonhole is formed inside the buttonhole.

The column hole is formed at the lower end of the buttonhole and the length of the column hole is smaller than or equal to the length of the buttonhole.

The button body is provided with drive winding and a driving part for rotating the shaft.

The drive portion is a drive tooth formed on at least one of the Niu Dingbi and buttonposts.

The drive teeth include a plurality of teeth elements that uniformly encircle the buttonposts.

The tooth unit is provided with a tooth driving surface facing the rope tightening direction and a tooth driving reverse surface facing the rope loosening direction; the back surface of the driving teeth is gradually towards from top to bottom an inclined plane for tightening the direction of the rope object.

The driving tooth surface extends along the axial direction of the winding shaft from top to bottom, or is an inclined surface gradually inclined towards the object direction of the tightening rope from top to bottom.

The driving teeth are positioned on the button teeth inner ring and a containing gap for containing the clamping jaw is arranged between the driving teeth and the button teeth.

The distance between the drive teeth and the button teeth is greater than the sum of the radial thickness of the resilient pawl arm and the pawl tooth height.

The driving teeth are formed on the inner surface of the button top wall and have a column gap with the button column.

The post void has a size to accommodate the upper shaft inner wall of the winding shaft.

The upper surface edge of the button top wall is formed with an annular protrusion corresponding to Niu Huancao.

The button main body, the annular tooth wall, the button teeth, the button column and the driving part are integrally injection molded.

A winding shaft comprising a shaft body; the shaft main body comprises a winding main body which is positioned on the inner ring of the bottom side wall and is correspondingly positioned below the clamping jaw, and an upper shaft part which correspondingly stretches into the inner ring of the clamping jaw; the annular surface where the maximum outer diameter of the winding body and the upper shaft portion is located is closer to the axis of the winding shaft than the annular surface where the bottom side wall is located.

The winding main body comprises an upper shaft wall, a lower shaft wall and a shaft body, wherein the upper shaft wall is correspondingly arranged below the clamping jaw, the lower shaft wall is arranged below the upper shaft wall, and the shaft body is connected between the upper shaft wall and the lower shaft wall; the diameter of the shaft body is smaller than the diameters of the shaft upper wall and the shaft lower wall.

The edge of the upper wall of the shaft is provided with a wall notch for the inner clamping part to pass through.

The upper shaft portion includes a driven portion corresponding to the driving portion for driving.

The driven part is a driven tooth corresponding to the driving tooth.

The driven teeth include a plurality of individual teeth that evenly encircle the axis of the winding shaft.

The single tooth is provided with a driven surface facing the rope loosening direction and a driven reverse surface facing the rope tightening direction; the driven back surface is an inclined surface which gradually inclines from top to bottom towards the object direction of the tightening rope.

The driven surface extends along the axial direction of the winding shaft from top to bottom, or is an inclined surface gradually inclined towards the object direction of the tightening rope from top to bottom.

The upper shaft part comprises an upper shaft outer wall which is positioned on the outer ring of the driven teeth and corresponds to the clamping jaw.

The upper shaft part comprises an upper shaft inner wall which is positioned on the inner ring of the driven tooth and corresponds to the buttonposts.

The shaft body is formed with a shaft hole into which the knob post extends.

The shaft hole vertically penetrates the shaft body along the axis of the shaft body.

The upper part or the lower part of the shaft hole is a circular hole which is matched with the circumferential surface of the button column and is radially limited.

The device also comprises an elastic clamping part which is arranged at the shaft hole and matched with the button post.

The elastic clamping part comprises an elastic clamping arm arranged on the hole wall of the shaft hole and an arm clamping block arranged at the free end of the elastic clamping arm and matched with the clamping ring.

The arm clamping block protrudes into the shaft hole area.

The edge of the arm clamping block is provided with a smooth inclined surface which is used for the clamping ring to slide forward.

The arm clamping block is provided with an arm anti-falling clamping surface which faces downwards and is clamped by the ring anti-falling clamping surface.

The arm anti-falling clamping surface is a plane perpendicular to the axis of the button column or gradually inclines downwards from the outer ring to the inner ring.

The elastic clamping arm is provided with an arm root connected with the hole wall of the shaft hole and an arm free end for bearing an arm clamping block; the elastic clamping arm gradually extends downwards from the arm root to the arm free end.

The cross section area of the elastic clamping arm gradually increases from bottom to top.

The elastic clamping arm is provided with an arm inner side face facing into the shaft hole, an arm outer side face facing in the opposite direction and two arm side faces positioned between the arm inner side face and the arm outer side face.

The distance between the inner side surface of the arm and the outer side surface of the arm gradually increases from bottom to top.

The distance between the two side surfaces of the two arms gradually increases from bottom to top.

The inner side surface of the arm and the inner wall of the shaft hole are on the same cylindrical surface or gradually incline towards the axis of the shaft hole from top to bottom.

The outer side surface of the arm is parallel to the axis of the shaft hole or gradually inclines from top to bottom towards the axis of the shaft hole.

The cross section of the elastic clamping arm is circular arc-shaped surrounding the axis of the shaft hole.

At least one of the lower end surface of the elastic clamping arm and the anti-falling clamping surface of the arm is provided with a poking part for poking.

The poking part is a convex block or a groove.

The poking part is a bar-shaped lug which is positioned between the two arm side surfaces and extends towards the two arm side surfaces.

The shaft body is formed with a surrounding slit surrounding the elastic clip arm.

The circumferential gap is equally wide or gradually widened from top to bottom.

The surrounding gap comprises a back gap corresponding to the outer side surface of the arm and side gaps corresponding to the side surfaces of the two arms.

The width of the back clearance at least at the lower end is larger than the fastening depth of the upper clamping ring and the arm clamping block.

The width of the back clearance at least at the lower end is larger than the fastening depth of the lower clamping ring and the arm clamping block.

The outer side surface of at least one of the back slit and the side slit gradually inclines outwards from top to bottom.

The more than two elastic clamping parts are arranged around the axis of the shaft hole.

The two or three elastic clamping parts are uniformly arranged around the axis of the shaft hole.

The distance between the end parts of the arm clamping blocks of each elastic clamping part is smaller than the outer diameter of the lower clamping ring.

The distance between the end parts of the arm clamping blocks of each elastic clamping part is smaller than the outer diameter of the upper clamping ring.

The end part of the arm clamping block is in a circular arc shape matched with at least one of the upper neck part and the lower neck part.

The elastic clamping part and the shaft main body are integrally injection molded.

A rope turnbuckle comprises a bottom cover, a knob and a winding shaft which are installed together in a matched mode.

The bottom cover comprises a claw, and the claw is provided with claw teeth; the knob is provided with driving teeth and button teeth matched with the claw teeth; the winding shaft is provided with driven teeth for driving the driving teeth; the size of the overlapped area when the claw teeth are matched with the button teeth in the up-down direction is smaller than the distance for pulling out the knob when the rope object is loosened; the size of the overlapped area when the driving teeth are matched with the driven teeth in the up-down direction is smaller than the distance for pulling out the knob when the rope object is loosened.

The bottom cover comprises a claw, and the claw is provided with claw teeth; the knob is provided with driving teeth and button teeth matched with the claw teeth; the button tooth is provided with a clamping tooth surface matched and clamped with the tooth clamping surface of the claw tooth and a gear-following surface matched with the gear-following surface of the claw tooth in a following way.

The tooth-following surface gradually inclines towards the direction of loosening the rope object from the root to the tip of the button tooth.

The plane of the clamping tooth surface gradually inclines towards the object screwing direction of the screwing rope through the axis of the winding shaft or from the tooth root to the tooth tip.

A shoe comprises a shoe body and a rope turnbuckle assembled on the shoe body.

An article includes an article body and a cord turnbuckle assembled on the article body.

After the technical scheme is adopted, the bottom cover breaks through the structural form of the traditional rope bottom cover, in the actual use process, the bottom cover is matched with the knob and the winding shaft, the claw is positioned above the winding main body of the winding shaft to axially limit the winding shaft, the claw radially limits the upper shaft part of the winding shaft positioned at the inner ring, the annular tooth wall of the knob stretches into the outer side of the claw of the bottom cover, the button teeth are correspondingly matched with the claw teeth, and the driving part of the knob is matched with the driven part of the winding shaft; when a user rotates the knob along the direction of the rope tightening object, the driven part is driven by the driving part to drive the winding shaft to wind the rope tightening object, the button teeth slide over the claw teeth in a homeopathic manner and are clamped by the claw teeth at the corresponding positions, the knob is prevented from reversing, and further the winding shaft is prevented from reversing, so that the winding shaft tightens the rope tightening object and keeps at the corresponding positions. The winding shaft is limited by the axial direction and the radial direction of the clamping jaw at the same time, and the winding shaft rotates stably and smoothly and is not easy to shake; the elastic claw arm and the bottom side wall are staggered on the ring surface, so that the upper and lower demolding processing is facilitated, the ring surface is more inwards than the bottom side wall, the integrally formed elastic claw arm can directly limit the winding shaft in a firmer axial direction, simultaneously, the outward claw teeth and the inward button teeth are convenient to be directly matched above the winding shaft, the button teeth and the button side wall can be folded inwards, the button side wall can be close to the bottom side wall for running, the structure is compact and stable, sundries are prevented from entering to influence the running of an internal mechanism, simultaneously, the outer side of the outwards arched elastic claw arm is propped and reinforced, the compressive strength of the elastic claw arm is ensured, the winding shaft and the knob limit the claw up and down, the claw cannot be bent upwards or broken downwards due to stress, and the lasting and stable running of the mechanism is ensured. Pulling out the knob along the axial direction makes the button teeth and the claw teeth separate, or makes the driving part and the driven part separate, so that the rotation stopping of the winding shaft can be unlocked, and the rope loosening prevention object is realized. Compared with the prior art, the bottom cover disclosed by the utility model has the advantages of easiness in demolding, simplicity in processing and assembling procedures, low cost, firmness, compactness, dust prevention, sand prevention, lasting and stable and smooth working performance and the like when being matched with the knob and the winding shaft.

According to the knob disclosed by the utility model, the structural form of the traditional rope knob is broken through, in the actual use process, the knob is matched with the bottom cover and the winding shaft, all structures of the knob can be directly demoulded and molded up and down, the claw is positioned above the winding main body of the winding shaft to axially limit the winding shaft, the claw radially limits the upper shaft part of the winding shaft positioned at the inner ring, the annular tooth wall of the knob stretches into the outer side of the claw of the bottom cover to enable the button teeth to be correspondingly matched with the claw teeth, and the driving part of the knob is matched with the driven part of the winding shaft; when a user rotates the knob along the direction of the rope tightening object, the driven part is driven by the driving part to drive the winding shaft to wind the rope tightening object, the button teeth slide over the claw teeth in a homeopathic manner and are clamped by the claw teeth at the corresponding positions, the knob is prevented from reversing, and further the winding shaft is prevented from reversing, so that the winding shaft tightens the rope tightening object and keeps at the corresponding positions. The winding shaft is limited by the axial direction and the radial direction of the clamping jaw at the same time, and the winding shaft rotates stably and smoothly and is not easy to shake; the elastic claw arm and the bottom side wall are staggered on the ring surface, so that the upper and lower demolding processing is facilitated, the ring surface is more inwards than the bottom side wall, the integrally formed elastic claw arm can directly limit the winding shaft in a firmer axial direction, simultaneously, the outward claw teeth and the inward button teeth are convenient to be directly matched above the winding shaft, the button teeth and the button side wall can be folded inwards, the button side wall can be close to the bottom side wall for running, the structure is compact and stable, sundries are prevented from entering to influence the running of an internal mechanism, simultaneously, the outer side of the outwards arched elastic claw arm is propped and reinforced, the compressive strength of the elastic claw arm is ensured, the winding shaft and the knob limit the claw up and down, the claw cannot be bent upwards or broken downwards due to stress, and the lasting and stable running of the mechanism is ensured. Pulling out the knob along the axial direction makes the button teeth and the claw teeth separate, or makes the driving part and the driven part separate, so that the rotation stopping of the winding shaft can be unlocked, and the rope loosening prevention object is realized. Compared with the prior art, the knob disclosed by the utility model has the advantages of easiness in demolding, simplicity in processing and assembling procedures, low cost, firmness, compactness, dust prevention, sand prevention, lasting and stable and smooth working performance and the like when being matched with the bottom cover and the winding shaft.

The winding shaft breaks through the structural form of the traditional rope winding shaft, in the actual use process, the winding shaft is matched with the knob and the bottom cover, the claw is positioned above the winding main body of the winding shaft to axially limit the winding shaft, the claw carries out radial limit on the upper shaft part of the winding shaft positioned at the inner ring, the annular tooth wall of the knob stretches into the outer side of the claw of the bottom cover, so that the button teeth are correspondingly matched with the claw teeth, and the driving part of the knob is matched with the driven part of the winding shaft; when a user rotates the knob along the direction of the rope tightening object, the driven part is driven by the driving part to drive the winding shaft to wind the rope tightening object, the button teeth slide over the claw teeth in a homeopathic manner and are clamped by the claw teeth at the corresponding positions, the knob is prevented from reversing, and further the winding shaft is prevented from reversing, so that the winding shaft tightens the rope tightening object and keeps at the corresponding positions. The winding shaft is limited by the axial direction and the radial direction of the clamping jaw at the same time, and the winding shaft rotates stably and smoothly and is not easy to shake; the elastic claw arm and the bottom side wall are staggered on the ring surface, so that the upper and lower demolding processing is facilitated, the ring surface is more inwards than the bottom side wall, the integrally formed elastic claw arm can directly limit the winding shaft in a firmer axial direction, simultaneously, the outward claw teeth and the inward button teeth are convenient to be directly matched above the winding shaft, the button teeth and the button side wall can be folded inwards, the button side wall can be close to the bottom side wall for running, the structure is compact and stable, sundries are prevented from entering to influence the running of an internal mechanism, simultaneously, the outer side of the outwards arched elastic claw arm is propped and reinforced, the compressive strength of the elastic claw arm is ensured, the winding shaft and the knob limit the claw up and down, the claw cannot be bent upwards or broken downwards due to stress, and the lasting and stable running of the mechanism is ensured. Pulling out the knob along the axial direction makes the button teeth and the claw teeth separate, or makes the driving part and the driven part separate, so that the rotation stopping of the winding shaft can be unlocked, and the rope loosening prevention object is realized. Compared with the prior art, the winding shaft disclosed by the utility model has the advantages of easiness in demolding, simplicity in processing and assembling procedures, low cost, firmness, compactness, dust prevention, sand prevention, lasting and stable and smooth working performance and the like when being matched with the bottom cover and the knob.

The rope turnbuckle breaks through the structural form of the traditional rope turnbuckle, in the actual use process, the knob, the bottom cover and the winding shaft are matched, all structures of the knob can be directly demoulded and molded up and down, the claw is positioned above the winding main body of the winding shaft to axially limit the winding shaft, the claw radially limits the upper shaft part of the winding shaft positioned at the inner ring, the annular tooth wall of the knob stretches into the outer side of the claw of the bottom cover to enable the button teeth to be correspondingly matched with the claw teeth, and the driving part of the knob is matched with the driven part of the winding shaft; when a user rotates the knob along the direction of the tightening rope object, the driven part is driven by the driving part to drive the winding shaft to wind the tightening rope object, the button teeth slide through the claw teeth in a proper direction and are clamped by the claw teeth at corresponding positions, so that the knob is prevented from reversing, the winding shaft is prevented from reversing, and the winding shaft tightens the rope and keeps at the corresponding positions. The winding shaft is limited by the axial direction and the radial direction of the clamping jaw at the same time, and the winding shaft rotates stably and smoothly and is not easy to shake; the elastic claw arm and the bottom side wall are staggered on the ring surface, so that the upper and lower demolding processing is facilitated, the ring surface is more inwards than the bottom side wall, the integrally formed elastic claw arm can directly limit the winding shaft in a firmer axial direction, simultaneously, the outward claw teeth and the inward button teeth are convenient to be directly matched above the winding shaft, the button teeth and the button side wall can be folded inwards, the button side wall can be close to the bottom side wall for running, the structure is compact and stable, sundries are prevented from entering to influence the running of an internal mechanism, simultaneously, the outer side of the outwards arched elastic claw arm is propped and reinforced, the compressive strength of the elastic claw arm is ensured, the winding shaft and the knob limit the claw up and down, the claw cannot be bent upwards or broken downwards due to stress, and the lasting and stable running of the mechanism is ensured. Pulling out the knob along the axial direction to separate the button teeth from the claw teeth, or the driving part and the driven part are separated, so that the rotation stopping of the winding shaft can be unlocked, and the rope loosening prevention object is realized. Compared with the prior art, the rope turnbuckle has the advantages of easiness in demolding, simplicity in processing and assembling procedures, low cost, firmness, compactness, dust prevention, sand prevention, lasting and stable and smooth working performance and the like.

The shoe breaks through the shoelace winding and unwinding structural form of the traditional shoe, in the actual use process, the knob, the bottom cover and the winding shaft of the rope turnbuckle are matched, each structure of the knob can be directly and vertically demoulded and molded, the claw is positioned above the winding main body of the winding shaft to axially limit the winding shaft, the claw radially limits the upper shaft part of the winding shaft positioned at the inner ring, the annular tooth wall of the knob extends into the outer side of the claw of the bottom cover to enable the button teeth to be correspondingly matched with the claw teeth, and the driving part of the knob is matched with the driven part of the winding shaft; when a user rotates the knob along the direction of the rope tightening object, the driven part is driven by the driving part to drive the winding shaft to wind the rope tightening object, the button teeth slide over the claw teeth in a homeopathic manner and are clamped by the claw teeth at the corresponding positions, the knob is prevented from reversing, and further the winding shaft is prevented from reversing, so that the winding shaft tightens the rope tightening object and keeps at the corresponding positions. The winding shaft is limited by the axial direction and the radial direction of the clamping jaw at the same time, and the winding shaft rotates stably and smoothly and is not easy to shake; the elastic claw arm and the bottom side wall are staggered on the ring surface, so that the upper and lower demolding processing is facilitated, the ring surface is more inwards than the bottom side wall, the integrally formed elastic claw arm can directly limit the winding shaft in a firmer axial direction, simultaneously, the outward claw teeth and the inward button teeth are convenient to be directly matched above the winding shaft, the button teeth and the button side wall can be folded inwards, the button side wall can be close to the bottom side wall for running, the structure is compact and stable, sundries are prevented from entering to influence the running of an internal mechanism, simultaneously, the outer side of the outwards arched elastic claw arm is propped and reinforced, the compressive strength of the elastic claw arm is ensured, the winding shaft and the knob limit the claw up and down, the claw cannot be bent upwards or broken downwards due to stress, and the lasting and stable running of the mechanism is ensured. Pulling out the knob along the axial direction makes the button teeth and the claw teeth separate, or makes the driving part and the driven part separate, so that the rotation stopping of the winding shaft can be unlocked, and the rope loosening prevention object is realized. Compared with the prior art, the rope turnbuckle of the shoe has the advantages of easy demoulding, simple processing and assembling procedures, low cost, firmness, compactness, dust prevention, sand prevention, durable and stable working performance and the like.

According to the article, the rope winding and unwinding structural form of the traditional article is broken through, in the actual use process, a knob, a bottom cover and a winding shaft of a rope turnbuckle are matched, all structures of the knob can be directly and vertically subjected to demolding and forming, a claw is positioned above a winding main body of the winding shaft to axially limit the winding shaft, the claw radially limits an upper shaft part of the winding shaft positioned at an inner ring, an annular tooth wall of the knob stretches into the outer side of the claw of the bottom cover, button teeth are correspondingly matched with claw teeth, and a driving part of the knob is matched with a driven part of the winding shaft; when a user rotates the knob along the direction of the rope tightening object, the driven part is driven by the driving part to drive the winding shaft to wind the rope tightening object, the button teeth slide over the claw teeth in a homeopathic manner and are clamped by the claw teeth at the corresponding positions, the knob is prevented from reversing, and further the winding shaft is prevented from reversing, so that the winding shaft tightens the rope tightening object and keeps at the corresponding positions. The winding shaft is limited by the axial direction and the radial direction of the clamping jaw at the same time, and the winding shaft rotates stably and smoothly and is not easy to shake; the elastic claw arm is staggered with the ring surface of the bottom side wall, which is convenient for the upper and lower demoulding processing, the ring surface is more inward than the bottom side wall, and the integrally formed elastic claw arm can directly carry out more firm axial limit on the winding shaft, simultaneously, the outward claw teeth and the inward button teeth are convenient to be matched directly above the winding shaft, the button teeth and the button side wall can be retracted inwards, the button side wall can be close to the bottom side wall for running, the structure is compact and stable, sundries are prevented from entering the device to affect the operation of the internal mechanism, the outer sides of the bent arc-shaped elastic claw arms which are arched outwards are propped and reinforced, the compressive strength of the elastic claw arms is ensured, the winding shaft and the knob limit the claw up and down, the claw cannot be bent upwards or broken downwards due to stress, and the lasting stable and smooth operation of the mechanism is ensured. Pulling out the knob along the axial direction makes the button teeth and the claw teeth separate, or makes the driving part and the driven part separate, so that the rotation stopping of the winding shaft can be unlocked, and the rope loosening prevention object is realized. In contrast to the prior art, the method has the advantages that, the object of the present utility model is to provide a method for manufacturing a semiconductor device, the rope turnbuckle has the advantages of easy demoulding, simple processing and assembling procedures, low cost, firmness, compactness, dust prevention, sand prevention, durable and stable working performance, and the like.

Drawings

Fig. 1 is a schematic perspective view of a bottom cover; FIG. 2 is a schematic top plan view of the bottom cover; FIG. 3 is a schematic side plan view of the bottom cover; FIG. 4 is a schematic bottom view of the bottom cover; FIG. 5 is a schematic perspective view of another angle of the bottom cover;

FIG. 6 is a schematic cross-sectional structural view of the bottom cover; FIG. 7 is a schematic perspective view of a knob; FIG. 8 is a schematic view of the bottom plan view of the knob; FIG. 9 is a schematic side plan view of a knob; FIG. 10 is a schematic cross-sectional view of a knob; FIG. 11 is a schematic perspective view of a winding shaft; FIG. 12 is a schematic cross-sectional view of a winding shaft; FIG. 13 is a schematic view of the bottom plan view of the winding shaft; FIG. 14 is a schematic top plan view of the winding shaft; FIG. 15 is a schematic perspective view of a cord clasp; FIG. 16 is a schematic cross-sectional view of a cord clasp; fig. 17 is a schematic view of a rope turnbuckle applied to an article such as a shoe.

In the figure:

11-bottom side wall 111-inner projection 1111-forming notch 112-inner clip 113-elastic swing arm 114-protruding wall 1141-wall extension 115-bottom extension 116-rope passing portion 117-rope passing portion 118-protruding ring 1181-ring segment 12-claw 121-elastic claw arm 1211-arm projection 122-claw tooth 1221-tooth clip face 1222-tooth cis face 123-connecting portion 124-root protrusion 13-claw gap 14-tooth wall gap

2-button body 21-annular tooth wall 211-button tooth 2111-latch tooth 2112-tooth following surface 22-Niu Dingbi-Niu Cebi-Niu Huancao 241-inner race groove wall 242-outer race groove wall 25-button post 251-post body 252-upper snap ring 253-lower snap ring 2531-ring anti-slip surface 2532-ring ramp 254-upper neck 255-lower neck 256-post hole 26-drive tooth 261-tooth monomer 2611-drive tooth surface 2612-drive tooth reverse surface 27-post void 28-annular protrusion

31-winding body 311-shaft upper wall 3111-wall notch 312-shaft lower wall 313-shaft body 32-upper shaft portion 321-driven teeth 3211-single teeth 32111-driven face 32112-driven face 322-upper shaft outer wall 323-upper shaft inner wall 33-shaft hole 34-elastic clamping portion 341-elastic clamping arm 3411-arm inner side 3412-arm outer side 3413-arm side 342-arm clamping block 3421-arm anti-release clamping face 343-toggle 35-surrounding gap 351-back gap 352-side gap

4-connecting seat

5-shoe body 6-slide over the inclined plane in a homeopathic manner.

Detailed Description

In order to further explain the technical scheme of the utility model, the following is explained in detail through specific examples.

1-17, the bottom cover of the utility model comprises a bottom main body, wherein the bottom main body comprises a bottom side wall 11, and the direction facing a knob is the upper direction, and the opposite direction is the lower direction; the clamping jaw 12 is arranged on the bottom side wall 11, and the clamping jaw 12 is integrally formed in an area above the lower end of the bottom side wall 11; the pawl 12 includes an elastic pawl arm 121 extending in a direction around the winding shaft axis and a pawl tooth 122 formed on the elastic pawl arm 121 and facing the outer ring; the elastic claw arm 121 is curved and is arched outwards, and the ring surface where the elastic claw arm 121 is located is closer to the axis of the winding shaft than the ring surface where the bottom side wall 11 is located. In the actual use process, the bottom cover is matched with the knob and the winding shaft, the claw 12 is positioned above the winding main body 31 of the winding shaft to axially limit the winding shaft, the claw 12 radially limits the upper shaft part 32 of the winding shaft positioned at the inner ring, the annular tooth wall 21 of the knob stretches into the outer side of the claw 12 of the bottom cover, the button teeth 211 are correspondingly matched with the claw teeth 122, and the driving part of the knob is matched with the driven part of the winding shaft; when a user rotates the knob along the direction of tightening the rope object, the driven part is driven by the driving part to drive the winding shaft to wind the rope object, the button teeth 211 slide through the claw teeth 122 in a homeopathic manner and are clamped by the claw teeth 122 at corresponding positions, the knob is prevented from reversing, and further the winding shaft is prevented from reversing, so that the winding shaft tightens the rope object and keeps at the corresponding positions. The winding shaft is limited by the axial direction and the radial direction of the clamping jaw 12 at the same time, and the winding shaft rotates stably and smoothly and is not easy to shake; the annular surfaces of the elastic claw arms 121 and the bottom side wall 11 are staggered, so that the upper demolding and the lower demolding are facilitated, the annular surfaces are more inward than the bottom side wall 11, the integrally formed elastic claw arms 121 can directly limit the winding shaft in the axial direction, simultaneously, the outward claw teeth 122 and the inward claw teeth 211 are convenient to be matched with each other directly above the winding shaft, the claw teeth 211 and the button side wall 23 can be retracted inwards, the button side wall 23 can move close to the bottom side wall 11, the structure is compact and stable, sundries are prevented from entering to affect the operation of an internal mechanism, the outer sides of the outwards arched elastic claw arms 121 are propped and reinforced, the compressive strength of the elastic claw arms 121 is ensured, the winding shaft and the rotary knob limit the claw 12 up and down, the claw 12 cannot be bent upwards or downwards due to stress, and the lasting and smooth operation of the mechanism is ensured. Pulling out the knob along the axial direction causes the button teeth 211 and the claw teeth 122 to be separated, or causes the driving part and the driven part to be separated, so that the rotation stopping of the winding shaft can be unlocked, and the rope loosening prevention object is realized.

In another embodiment, the ring surface of the elastic claw arm 121 is located at the inner ring surface of the bottom sidewall 11. The structure can ensure that the annular surfaces where the elastic claw arms 121 and the bottom side wall 11 are arranged are staggered, so that the upper and lower demolding processing is facilitated, the annular surfaces are arranged on the annular surface inner ring where the bottom side wall 11 is arranged, the integrally formed elastic claw arms 121 can directly limit the winding shaft in a firmer axial direction, simultaneously, the outward claw teeth 122 and the inward claw teeth 211 are conveniently matched with each other directly above the winding shaft, the button teeth 211 and the button side wall 23 can be retracted inwards, the button side wall 23 can move close to the bottom side wall 11, the structure is compact and stable, sundries are prevented from entering and affecting the operation of an internal mechanism, and simultaneously, the outer sides of the outwards arched elastic claw arms 121 are propped and reinforced, so that the compressive strength of the elastic claw arms 121 is ensured.

In another embodiment, the projection of the elastic claw arm 121 on a plane perpendicular to the winding shaft axis is in the projection of the inner ring of the bottom side wall 11 on a plane perpendicular to the winding shaft axis. This structure can ensure that elastic claw arm 121 is in the anchor ring inner circle at end lateral wall 11 place, elastic claw arm 121 staggers with the anchor ring at end lateral wall 11 place, be convenient for upper and lower drawing of patterns processing, and anchor ring is in the anchor ring inner circle at end lateral wall 11 place and integrated into one piece's elastic claw arm 121 can directly carry out more firm axial spacing to the winding shaft, be convenient for simultaneously outwards facing claw tooth 122 and inwards facing button tooth 211 are direct to cooperate in winding shaft top, can make button tooth 211 and button lateral wall 23 inwards receive, button lateral wall 23 can be close to the operation with end lateral wall 11, compact structure is stable and avoid debris to get into and influence the operation of internal mechanism, outwards arched curved elastic claw arm 121's outside carries out the jack-up to strengthen simultaneously, ensure elastic claw arm 121 compressive strength.

In another embodiment, a space for accommodating the winding shaft is provided between the claw 12 and the lower end of the bottom sidewall 11. This configuration facilitates a more secure axial stop of the winding shaft by the jaws 12 directly.

In another embodiment, the jaws 12 are formed at the upper portion of the bottom sidewall 11. This structure facilitates the cooperation of the claw 12 with the knob's knob teeth 211, and forms a space in the lower portion of the bottom side wall 11 sufficient to accommodate at least the winding shaft main body portion of the winding shaft, ensuring stable and smooth cooperation of the components and the wire-receiving amount.

In another embodiment, more than two jaws 12 are arranged around the axis of the winding shaft with the free ends facing the same. This structure is convenient for more than two jack catch 12 cooperate with the knob simultaneously, ensures the omnidirectional and intensity of screens.

In a further embodiment of the present invention, two, three or four jaws 12 are uniformly arranged around the winding shaft axis. The structure ensures that the claws 12 of two, three or four claws 12 are matched with the knob at the same time, and ensures the clamping balance, omnibearing and strength; at the same time, the elastic claw arm 121 is limited in a reasonable length range, and the elasticity and strength of the elastic claw arm 121 are ensured.

In another embodiment, the pawl 122 is formed at least one of the outer ring side and the end of the elastic pawl arm 121. The claw 122 at the outer ring side or end of the elastic claw arm 121 is matched with the button 211 at the outer ring, when the button 211 is in cis contact with the claw 122 along the extending direction of the elastic claw arm 121 and slides relatively, the claw 122 drives the elastic claw arm 121 to elastically swing inwards, the claw 122 is outwards restored and deformed between the adjacent buttons 211 to be clamped, when the claw 122 is subjected to the pressure of the button 211 along the rope loosening direction, the outwards arched elastic claw arm 121 is tightly attached to the button 211, the button 211 is propped against the outer ring side of the elastic claw arm 121 to be reinforced, the elastic claw arm 121 is prevented from being bent due to the pressure, and the compressive strength of the elastic claw arm 121 is ensured.

In another embodiment, the resilient claw arms 121 have a claw gap 13 between them and the inside of the bottom side wall 11. The jaw gap 13 facilitates the integrally demolding of the resilient jaw arm 121 and the bottom sidewall 11; the jaw gap 13 also allows the annular tooth wall 21 of the knob to extend into and correspond to the resilient jaw arm 121 at the inner ring and mate with the jaw teeth 122.

In another embodiment, jaw gap 13 has dimensions such that annular tooth wall 21 and button teeth 211 of the knob extend into. The structure can ensure that the claw gap 13 is used for the annular tooth wall 21 of the knob to extend into and correspond to the elastic claw arm 121 positioned at the inner ring and be tightly matched with the claw teeth 122 on the basis of being beneficial to integrally demolding and forming the elastic claw arm 121 and the bottom side wall 11.

In another embodiment, each jaw gap 13 forms a bottom ring groove for the annular tooth wall 21 and teeth 211 of the knob to extend into a full turn. When more than two claws 12 exist, the annular tooth wall 21 of the knob can extend into each claw gap 13 to match with each claw 12 and can continuously rotate along the whole circle of bottom ring groove formed by each claw gap 13, so that continuous rotation matching with each claw 12 is ensured.

In another embodiment, the width of the jaw gap 13 is greater than the sum of the thickness of the annular tooth wall 21 of the knob and the tooth height of the button tooth 211. This structure is favorable to the annular tooth wall 21 of knob to smoothly stretch into the claw gap 13 and cooperate with the claw 12, and simultaneously can keep a certain small gap between the button tooth 211 and the elastic claw arm 121, avoid the button tooth 211 to contact with the outer ring side of the elastic claw arm 121 when the knob rotates, and ensure the smoothness of rotation.

In another embodiment, the resilient claw arm 121 has a claw free end swingable inside and outside and a claw root portion connected to the inside of the bottom side wall 11. The elastic claw arm 121 is directly connected with the inner side of the bottom side wall 11 through the claw root, the structure is simple and firm, the integrated demolding and the molding are easy, the winding shaft is easy to be accommodated in the lower space, and the upper space is easy to be matched with the annular tooth wall 21.

In another embodiment, the claw root is connected to the inner side of the bottom side wall 11 by a root connection 123. The root connection 123 may form a bridge connecting the jaw root and the bottom sidewall 11, facilitating the formation of the jaw gap 13 between the resilient jaw arm 121 and the bottom sidewall 11.

In another embodiment, the root connection 123 is connected to the lower portion of the elastic claw arm 121. The structure ensures the limiting strength of the winding shaft below the root connecting part 123 and does not interfere the internal and external swinging of the elastic claw arm 121, and is beneficial to the elastic claw arm 121 to form a part which upwards exceeds the root connecting part 123, so that the elastic claw arm 121 and the claw teeth 122, the annular tooth wall 21 and the button teeth 211 form an internal and external ring corresponding matching state.

In another embodiment, the pawl tooth 122 is at least partially raised above the root connection 123. This structure ensures that the claw teeth 122 are formed to protrude upward beyond the root connecting portion 123, so that the claw teeth 122 are formed to be in a state of corresponding engagement with the annular tooth wall 21 and the button teeth 211.

In another embodiment, the pawl tooth 122 is generally higher than the root attachment portion 123. The structure can ensure that the whole claw teeth 122 are upwards beyond the root connecting part 123, which is beneficial to the formation of the inner and outer ring corresponding matching state between the whole claw teeth 122, the annular tooth wall 21 and the button teeth 211, and ensures the stable matching state.

In another embodiment, the resilient claw arm 121 is at least partially raised above the root connection 123. This structure ensures that the elastic claw arm 121 is formed to protrude upward beyond the root connecting portion 123, so that the elastic claw arm 121 and the claw teeth 122 are formed to be in a state of corresponding engagement with the annular tooth wall 21 and the button teeth 211.

In another embodiment, the elastic claw arm 121 is integrally higher than the root connecting portion 123. This structure can ensure that the elastic claw arm 121 protrudes upwards beyond the root connecting portion 123, which is beneficial to the elastic claw arm 121 and the claw teeth 122 to form an inner-outer ring corresponding matching state with the annular tooth wall 21 and the button teeth 211, ensure that the elastic claw arm 121 is radially distributed under the force of the button teeth 211, prevent the elastic claw arm 121 from deflecting, and ensure that the matching state is stable.

In another embodiment, at least one of the jaw root and root connection 123 has a root protrusion 124 protruding toward the inner rim. The root protruding portion 124 can limit the distance between the elastic claw arm 121 and the component of the inner ring, especially the upper shaft portion 32 of the winding shaft to a certain extent, so that the elastic claw arm 121 is prevented from being scratched to the upper shaft portion 32 and other components when swinging inwards, smooth and stable swinging of the elastic claw arm 121 is ensured, certain radial limiting is also performed on the winding shaft, stable rotation of the winding shaft is ensured, and the winding shaft is not easy to shake.

In another embodiment, the root protrusion 124 protrudes into the interior by a height greater than or equal to the tooth height of the pawl tooth 122. This structure can ensure that the space of the inner ring of the elastic claw arm 121 is enough to accommodate the range of the inward swinging of the elastic claw arm 121 when the claw teeth 122 are completely separated from the button teeth 211, avoid rubbing on the upper shaft portion 32 and other parts when the elastic claw arm 121 swings inwards, ensure smooth and stable swinging of the elastic claw arm 121, and smooth and stable rotation of the winding shaft.

In another embodiment, the root projection 124 of each jaw 12 forms a radial limit space into which the upper shaft portion 32 of the winding shaft extends. The radial limiting space can effectively radially limit the upper shaft part 32, ensures that the winding shaft rotates stably and is not easy to shake.

In another embodiment, the distance between the elastic claw arm 121 and the upper shaft portion 32 of the winding shaft is equal to or greater than the tooth height of the claw teeth 122. This structure can ensure that the space of the inner ring of the elastic claw arm 121 is enough to accommodate the range of the inward swinging of the elastic claw arm 121 when the claw teeth 122 are completely separated from the button teeth 211, avoid rubbing against the upper shaft portion 32 when the elastic claw arm 121 swings inward, ensure smooth and stable swinging of the elastic claw arm 121, and smooth and stable rotation of the winding shaft.

In another embodiment, the root connection 123 widens from the root of the pawl to the inside of the bottom side wall 11. The structure can lead the whole root connecting part 123 to carry out reasonable intensity distribution according to the stress condition, especially when the elastic claw arm 121 is acted by the button tooth 211, the connecting part of the root connecting part 123 and the bottom side wall 11 is taken as the maximum arm position, and the intensity can be ensured.

In a further embodiment of the present invention, an inner protrusion 111 is formed inside the bottom sidewall 11. The inner protrusion 111 can assist the root connection portion 123 to wind the shaft axial limiting or bearing of the annular tooth wall 21 is performed.

In another embodiment, the inner protrusions 111 correspond to the elastic claw arms 121. The structure is beneficial to the integral demoulding and forming of the inner bulge 111 and the elastic claw arm 121 at the same position and the bottom side wall 11, and the inner bulge 111 and the root connecting part 123 can form a limit position which is close to a full circle and is used for axially limiting the winding shaft, so that the limiting strength and the balanced contact of the upper shaft wall 311 are ensured, and the winding shaft is not suitable for deflection and deformation; but also assists the root connection 123 in providing a full turn of positive support to the annular tooth wall 21.

In another embodiment, the upper surface of the inner protrusion 111 is flush with the upper surface of the root connection 123. This structure can make the inner protrusion 111 assist the root connecting portion 123 to carry out a full circle of powerful support on the annular tooth wall 21, ensuring that the root connecting portion 123 is not easy to deform due to excessive pressing of the knob by an operator.

In another embodiment, the lower surface of the inner protrusion 111 is flush with the lower surface of the root connection 123. The inner protrusion 111 and the root connection portion 123 can form a limit position which is close to a complete circle and is used for axially limiting the winding shaft, so that the limit strength and the balanced contact of the upper shaft wall 311 are ensured, and the winding shaft is not suitable to deflect and deform.

In another embodiment, the inner protrusion 111 extends along an axis around the winding shaft. This configuration allows the inner protrusion 111 to form an annular contact surface that limits the winding shaft or annular tooth wall 21, and the limit balance and strength are ensured.

In another embodiment, the inner protrusion 111 is lower than an upper surface of at least one of the elastic claw arm 121 and the claw 122. This structure ensures that the pawl 122 and the elastic pawl arm 121 form portions that protrude upward beyond the inner projection 111, so that the pawl 122 and the elastic pawl arm 121 form an inner-outer ring-corresponding mating state with the annular tooth wall 21 and the button teeth 211.

In another embodiment, the inner protrusion 111 is lower than at least one of the resilient claw arm 121 and the claw 122. This structure ensures that the pawl 122 and the elastic pawl arm 121 integrally protrude upward beyond the inner projection 111, the claw teeth 122 and the elastic claw arms 121 are in corresponding matching state with the annular tooth wall 21 and the button teeth 211, so that the matching state is stable.

In a further embodiment of the present invention, the inner protrusion 111 has a molding notch 1111 between the adjacent root connecting portion 123. The molding indentations 1111 facilitate the mold to extend into the molding pawl 122 or the inner clamping portion 112 of the bottom sidewall 11.

In another embodiment, the molding notch 1111 corresponds to at least one of the inner clamping portion 112 and the pawl 122. This configuration ensures that the molding indentations 1111 facilitate the mold to extend into the corresponding molded pawl teeth 122 or inner clamping portion 112 of the bottom sidewall 11.

In another embodiment, the lower portion of the bottom sidewall 11 is formed with an inner catching portion 112 catching the winding shaft. The inner clamping part 112 can clamp the upper shaft wall 311 or the lower shaft wall 312 of the winding shaft, so as to prevent the winding shaft from easily moving downwards or falling out.

In another embodiment, the inner engaging portion 112 is a step protruding toward the winding shaft axis direction. The stepped inner clamping portion 112 can effectively clamp and support the winding shaft. Preferably, more than two inner clamping parts 112 in the form of three steps are uniformly formed around the inner side of the bottom cover, so that the winding shaft can be uniformly supported.

In another embodiment, an axial limiting space for limiting the up-down direction of the winding shaft is formed between the inner clamping portion 112 and the root connecting portion 123. The inner clamping part 112 and the root connecting part 123 are matched to limit the winding shaft in the axial limiting space, so that the winding shaft is ensured to rotate stably and smoothly, and the winding shaft is not easy to shake.

In another embodiment, a lower portion of the inner clamping portion 112 is formed with a slope into which the winding shaft is clamped. The inclined surface can be used for the winding shaft to smoothly clamp into the bottom cover.

In another embodiment, the bottom side wall 11 is formed with an elastic swing arm 113 capable of swinging inside and outside, and the inner clamping portion 112 is formed inside the elastic swing arm 113. When the winding shaft is clamped in, the elastic swing arm 113 is deformed outwards by extruding the inner clamping part 112, and when the winding shaft is clamped in, the elastic swing arm 113 is deformed inwards to enable the inner clamping part 112 to be clamped below the winding shaft.

In another embodiment, a gap is formed between the elastic swing arm 113 and the main body portion of the bottom sidewall 11. The gap is convenient for the elastic swing arm 113 to swing inside and outside relative to the main body part of the bottom cover, and is convenient for the elastic swing arm 113 and the bottom cover to be integrally injection molded.

In another embodiment, the upper end of the bottom side wall 11 has a protruding wall 114 higher than the root connection 123. When the annular tooth wall 21 is correspondingly positioned on the outer ring of the claw 12, the protruding wall 114 can correspondingly positioned on the outer ring of the annular tooth wall 21 to carry out radial limiting, so that the annular tooth wall 21 and the claw 12 are matched smoothly, and the knob rotates smoothly and stably and is not easy to shake.

In another embodiment, the protruding wall 114 is higher than the resilient claw arm 121. This configuration allows the protruding wall 114 to be radially restrained against the outer circumference of the annular tooth wall 21 after releasing the cord pulling knob to disengage the button tooth 211 from the pawl tooth 122, the knob is not easy to shake or deflect and lift.

In another embodiment, the protruding wall 114 has a wall extension 1141 that extends into the button groove 24. The protruding wall 114 extends into the button ring groove 24 between the annular tooth wall 21 and the button side wall 23 through the wall extending part 1141, so that the button side wall 23, the wall extending part 1141 and the button ring groove 24 are mutually embedded and form the sleeved mutually radial limit, the smooth and steady matching of the annular tooth wall 21 and the claw 12 is ensured, the knob rotates smoothly and steadily, the knob is not easy to shake, and the knob is not easy to shake or deflect and lift.

In another embodiment, the maximum depth of the wall extension 1141 into the button groove 24 is greater than the distance the knob is pulled out when the cord is loosened. The structure can ensure that the knob is not easy to shake or deflect and lift while ensuring smooth and stable rotation of the knob and difficult shaking when loosening the rope and pulling out the knob to separate the knob teeth 211 from the claw teeth 122 and the knob side wall 23, the wall extending part 1141 and the knob ring groove 24 are mutually embedded and form the sleeve of the inner ring and the outer ring to mutually radially limit.

In another embodiment, the resilient claw arm 121 is provided with a downwardly extending arm projection 1211. The arm protrusions 1211 can support the elastic claw arms 121, especially when the knob is pressed down, the Niu Chi 211 can exert downward pressure on the claw teeth 122 and the elastic claw arms 121, so that the elastic claw arms 121 are prevented from bending and deforming downwards to influence the cooperation of the claw teeth 122 and the button teeth 211; it is possible to ensure smooth and steady inner and outer swinging of the elastic claw arm 121 without deflection.

In another embodiment, an arm protrusion 1211 is formed at the lower surface of the elastic claw arm 121 and extends toward the winding body 31 of the winding shaft. The arm protrusions 1211 can be supported on the winding body 31, and can ensure smooth and efficient swinging of the elastic claw arms 121 while avoiding deformation of the elastic claw arms 121 and ensuring smooth and steady swinging, and can also ensure contact with the winding shaft with a small area.

In another embodiment, the lower end of the arm projection 1211 is higher than the lower surface of the root connecting portion 123. With this structure, the arm protrusions 1211 still have a certain gap with the upper surface of the winding body 31 when the root connection portion 123 is in contact with the upper surface of the winding body 31, so that the arm protrusions 1211 are prevented from rubbing against the winding body 31 when the elastic claw arms 121 swing inside and outside, and smooth and efficient swing inside and outside of the elastic claw arms 121 is ensured.

In another embodiment, the lower end of the arm projection 1211 is flush with the lower surface of the root connection 123. This structure can make the arm projection 1211 slightly contact with the upper surface of the winding body 31 when the root connecting portion 123 contacts with the upper surface of the winding body 31 to a certain extent, ensures that the arm projection 1211 does not excessively scratch the winding body 31 when the elastic claw arm 121 swings inside and outside, and ensures smooth and efficient swinging inside and outside of the elastic claw arm 121.

In another embodiment, the protrusion height of the arm protrusion 1211 is equal to or less than the thickness of the root connecting portion 123 or the inner protrusion 111. The structure can ensure that the arm protrusion 1211 still has a certain gap or micro contact with the upper surface of the winding body 31 when the root connecting part 123 or the inner protrusion 111 is contacted with the upper surface of the winding body 31, so that the arm protrusion 1211 can not scratch the winding body 31 when the elastic claw arm 121 swings inside and outside, and smooth and efficient swinging inside and outside of the elastic claw arm 121 is ensured.

In another embodiment, the arm protrusions 1211 are formed between both ends of the elastic claw arm 121. The structure can support the arm protrusion 1211 between two ends of the elastic claw arm 121, specifically, the middle part of the elastic claw arm 121, and can support the elastic claw arm 121, and meanwhile, the middle part of the elastic claw arm 121 is prevented from bending and deforming downwards due to stress, so that the strength of the elastic claw arm 121 is ensured.

In a further embodiment of the present invention, an arm projection 1211 is formed at the claw free end of the elastic claw arm 121. The structure can support the arm protuberance 1211 on the free end of the claw, so that the free end of the claw is not easy to move up and down, and the inner and outer movements of the claw teeth 122 of the free end of the claw are ensured to be smooth, and then the claw teeth 211 are matched with the claw teeth to be smooth.

In another embodiment, the distance between the arm projection 1211 and the upper shaft portion 32 of the winding shaft is equal to or greater than the tooth height of the pawl tooth 122. This structure ensures that the space of the inner ring of the elastic claw arm 121 is sufficient to accommodate the range of the elastic claw arm 121 and the arm projection 1211 swinging toward the inner ring when the claw teeth 122 are completely disengaged from the button teeth 211, prevents the elastic claw arm 121 and the arm projection 1211 from rubbing against the upper shaft portion 32 and the like when swinging inward, ensures smooth and stable swinging of the elastic claw arm 121, and smooth and stable rotation of the winding shaft.

In another embodiment, the outer ring side of the resilient claw arm 121 is equidistant from the bottom sidewall 11. This structure facilitates the insertion of the annular tooth wall 21 and the button tooth 211 of uniform thickness into and the efficient and smooth engagement with the pawl 12.

In another embodiment, the outer ring side of the resilient claw arm 121 gradually approaches the bottom side wall 11 from the claw root to the claw free end. The structure can lead the elastic claw arm 121 to generate micro deformation to the inner ring after the annular tooth wall 21 and the button tooth 211 extend into, generate a certain pretightening force for the cooperation of the claw tooth 122 and the button tooth 211, and ensure the cooperation and the clamping of the claw tooth 122 and the button tooth 211 to be efficient and smooth.

In another embodiment, the resilient claw arms 121 are equidistant from the bottom side wall 11. This structure facilitates the penetration of the annular tooth wall 21 and the button tooth 211 having uniform thickness into and the efficient and smooth cooperation rotation with the claw 12, and the elastic force of the elastic claw arm 121 is balanced and durable.

In another embodiment, the resilient claw arms 121 gradually approach the bottom side wall 11 from the claw root to the claw free end. The structure can lead the elastic claw arm 121 to generate micro deformation to the inner ring after the annular tooth wall 21 and the button tooth 211 extend into, generate a certain pretightening force for the cooperation of the claw tooth 122 and the button tooth 211, ensure the cooperation and the clamping of the claw tooth 122 and the button tooth 211 to be efficient and smooth, and lead the elastic force of the elastic claw arm 121 to be balanced and durable.

In another embodiment, the pawl teeth 122 are formed on the outer ring side of the free ends of the pawls. The claw teeth 122 on the outer ring side of the claw free ends are matched with the button teeth 211 on the outer ring, when the button teeth 211 are in homeopathic contact with the claw teeth 122 along the extending direction of the elastic claw arms 121 and slide relatively, the claw teeth 122 drive the elastic claw arms 121 to elastically swing inwards, the claw teeth 122 are outwards restored and deformed between the adjacent button teeth 211 to clamp, when the claw teeth 122 are subjected to the pressure of the button teeth 211 along the rope loosening direction, the outwards arched elastic claw arms 121 are tightly attached to the button teeth 211, the button teeth 211 are propped against the outer ring side of the elastic claw arms 121 to be reinforced, the elastic claw arms 121 are prevented from being bent due to the pressure, and the compressive strength of the elastic claw arms 121 is ensured; and the claw teeth 122 are formed at the free ends of the claws, so that a smaller swing angle of the elastic claw arms 121 can be ensured, a larger swing amplitude of the claw teeth 122 can be realized, the fatigue of the elastic claw arms 121 is reduced, and the service life is prolonged.

In another embodiment, the pawl tooth 122 has a tooth wall gap 14 between the pawl tooth and the inside of the bottom side wall 11. The tooth wall gap 14 facilitates the integrally demolding of the molded pawl tooth 122 and bottom sidewall 11; the tooth wall gap 14 also allows the annular tooth wall 21 of the knob to extend into and mate with the pawl tooth 122.

In a further embodiment of the present invention, the elastic claw arm 121 gradually extends from the claw root to the claw free end toward the object screwing direction. The elastic claw arm 121 that this structure set up is easily produced to inboard deformation when receiving the power of rope thing direction of screwing, more does benefit to button tooth 211 to the direction rotation of rope thing of screwing, and when the winding axle drove knob pressure claw tooth 122 along releasing the rope thing direction, elastic claw arm 121 utilized self holding power to support claw tooth 122 to resist button tooth 211 and avoid the reversal, does benefit to the unidirectional homeotropic rotation of winding axle.

In another embodiment, the pawl 122 has a root and a tip, and the pawl 122 is gradually inclined from the root to the tip in the direction of the rope. This structure facilitates smooth relative rotation of the button teeth 211 and the claw teeth 122 in the rope tightening direction, and when the winding shaft rotates in the rope loosening direction, the button teeth 211 and the claw teeth are locked together, so that the button teeth and the claw teeth have obvious unidirectional rotation effect.

In another embodiment, the pawl tooth 122 has a tooth root and a tooth tip, the pawl tooth 122 includes a tooth catch surface 1221 oriented in the direction of the rope being wound and a tooth facing surface 1222 oriented in the direction of the rope being unwound, the tooth facing surface 1222 being gradually sloped toward the direction of the rope being wound from the tooth root to the tooth tip. The tooth clamping surface 1221 can be matched with and abutted against the corresponding clamping tooth surface 2111 of the button tooth 211 to ensure that the claw 12 has the function of preventing the reverse rotation of the button; the teeth forward surface 1222 can cooperate with the corresponding forward tooth surface 2112 of the button tooth 211 to generate a forward effect of pressing the tooth 122 toward the inner ring to slide the button tooth 211 forward past the tooth 122, so as to ensure that the knob can rotate unidirectionally relative to the jaw 12.

In another embodiment, tooth gripping surface 1221 is located in a plane that passes through the winding shaft axis. The tooth engaging surface 1221 of this structure can be engaged with the corresponding engaging surface 2111 of the button tooth 211 to prevent the button from reversing.

In another embodiment, the tooth engaging surface 1221 is inclined gradually from the tooth root to the tooth tip toward the object of tightening. The tooth clamping surface 1221 with the structure can be matched with the corresponding clamping tooth surface 2111 of the button tooth 211 to be propped against and clamped, so that the effect that the tooth clamping surface 1221 is tightly meshed with the corresponding clamping tooth surface 2111 of the button tooth 211 when the reverse rotation force of the knob is larger is achieved while the reverse rotation of the knob is prevented, and the clamping firmness is ensured.

In another embodiment, the same elastic claw arm 121 is provided with two or more claw teeth 122 on the outer ring side. The structure can ensure the clamping firmness of the same clamping jaw 12 through the matching of more than two clamping teeth 122 and button teeth 211.

In another embodiment, the bottom side wall 11 includes a bottom insertion portion 115 inserted into the accommodating space of the connection base 4, and a rope passing portion 116 corresponding to the corresponding wall of the connection base 4. The bottom cover is connected with articles such as shoes through the connecting seat 4, specifically, the bottom extension part 115 of the bottom cover extends into the containing space of the connecting seat 4 and is buckled together through a buckling structure, the rope passing part 116 of the bottom cover corresponds to the corresponding part of the connecting seat 4, the rope passes through the rope passing part 116 above the corresponding part, and the winding shaft tightens or loosens the rope.

In another embodiment, the bottom sidewall 11 is formed with a rope passing portion 117 opposite to the rope passing portion 116. The winding shaft is connected with the rope through the rope threading hole, the rope can pass through the rope containing cavity of the rope turnbuckle of the rope threading part 116, and the rope can be threaded out by the rope threading part 117 for the rope threading operation of a rope threading person, for example, the rope ends are knotted to form clamping heads or the rope ends are threaded again directly.

In another embodiment, the rope passing portion 116 and the rope passing portion 117 correspond to each other and are located at both sides of the winding shaft. The winding shaft is positioned between the rope passing part 116 and the rope passing part 117, the rope penetrates into the rope accommodating cavity of the rope turnbuckle from the rope passing part 116, then penetrates through the rope threading hole, and then penetrates out of the rope passing part 117, and an operator knots the rope to form a clamping head, then retracts into the rope accommodating cavity and then is clamped at the rope threading hole to realize connection between the rope and the winding shaft or direct rope threading again.

In another embodiment, the rope passing portion 117 includes rope passing holes formed at the side wall of the bottom cover. The rope passing hole can allow the end part of the rope to pass through or retract into the rope containing cavity.

In another embodiment, the cord passage has a dimension for passage of a cord gripper. The structure is convenient for the rope ends to be knotted to form the clamping head and then pass through the rope passing hole and clamp the rope passing hole. The rope passing hole can be a strip extending along the circumferential direction of the bottom side wall 11, so that rope passing operation can be conveniently carried out on the corresponding rope passing hole and rope passing hole, the height space is not occupied, and the strength of the bottom side wall 11 is ensured.

In another embodiment, the outer peripheral surface of the bottom sidewall 11 is formed with a collar 118. The convex ring 118 can enhance the strength of the bottom side wall 11, and when the convex ring 118 is positioned above the bottom side wall 11 of the connecting seat 4, the positions of the bottom side wall 11 and the connecting seat 4 can be limited, so that the buckling stability of the bottom side wall 11 and the connecting seat 4 is ensured; when the convex ring 118 is positioned below the button side wall 23, the rotary button can be supported, a gap between the rotary button and the bottom side wall 11 can be blocked, and sundries are prevented from entering the gap while the rotary button rotates stably; the collar 118 also transitions the bottom side wall 11 and the button side wall 23 to ensure the handling feel.

In another embodiment, the collar 118 is at least as high as the rope portion 116 and the rope passing portion 117. This structure can ensure that bulge loop 118 is spacing to the position of end lateral wall 11 and connecting seat 4, ensures end lateral wall 11 and connecting seat 4 buckle stability, carries the knob, blocks the clearance between knob and the end lateral wall 11, carries out the transition to holding end lateral wall 11 and knob lateral wall 23, and when guaranteeing the operation feel, still with leading rope portion 116 equi-height, reduce the size between knob and the holding end lateral wall 11 as far as possible, and then reduce the holistic height of rope thing turnbuckle.

In another embodiment, the harness portion 116 is formed on the collar 118. The structure can combine the rope passing part 116 and the convex ring 118, so that the strength, the height saving and the strong integrity are ensured.

In another embodiment, the upper surface of the collar 118 is planar. The structure can lead the convex ring 118 to be matched with the button side wall 23 in parallel, and carry out matched bearing on the knob, thereby being beneficial to the smooth rotation of the knob and blocking the gap between the knob and the bottom side wall 11.

In another embodiment, the lower surface of the collar 118 is planar. The structure can enable the convex ring 118 to be matched and clung to the bottom containing side wall 11 of the connecting seat 4 for effective limiting in the vertical direction, ensure that the bottom side wall 11 and the connecting seat 4 are buckled stably, the whole surface is smooth, and ensure the operation hand feeling.

In a further embodiment of the present utility model, the convex ring 118 is formed with a ring segment 1181 corresponding to the rope passing portion 117. The loop 1181 does not block the rope passing portion 117, facilitating rope threading.

A knob, as shown in fig. 1-17, includes a knob body 2; the button body 2 includes an annular tooth wall 21 extending toward the bottom cover and corresponding to the claw 12, an annular surface where the annular tooth wall 21 is located is closer to the axis of the winding shaft than an annular surface where the bottom side wall 11 is located, and a button tooth 211 facing the claw 12 is formed on an inner ring side of the annular tooth wall 21. In the actual use process, the knob is matched with the bottom cover and the winding shaft, the structures of the knob can be directly and vertically demoulded and molded, the claw 12 is positioned above the winding main body 31 of the winding shaft to axially limit the winding shaft, the claw 12 radially limits the upper shaft part 32 of the winding shaft positioned at the inner ring, the annular tooth wall 21 of the knob stretches into the outer side of the claw 12 of the bottom cover, the button teeth 211 are correspondingly matched with the claw teeth 122, and the driving part of the knob is matched with the driven part of the winding shaft; when a user rotates the knob along the direction of tightening the rope object, the driven part is driven by the driving part to drive the winding shaft to wind the rope object, the button teeth 211 slide through the claw teeth 122 in a homeopathic manner and are clamped by the claw teeth 122 at corresponding positions, the knob is prevented from reversing, and further the winding shaft is prevented from reversing, so that the winding shaft tightens the rope object and keeps at the corresponding positions. The winding shaft is limited by the axial direction and the radial direction of the clamping jaw 12 at the same time, and the winding shaft rotates stably and smoothly and is not easy to shake; the annular surfaces of the elastic claw arms 121 and the bottom side wall 11 are staggered, so that the upper demolding and the lower demolding are facilitated, the annular surfaces are more inward than the bottom side wall 11, the integrally formed elastic claw arms 121 can directly limit the winding shaft in the axial direction, simultaneously, the outward claw teeth 122 and the inward claw teeth 211 are convenient to be matched with each other directly above the winding shaft, the claw teeth 211 and the button side wall 23 can be retracted inwards, the button side wall 23 can move close to the bottom side wall 11, the structure is compact and stable, sundries are prevented from entering to affect the operation of an internal mechanism, the outer sides of the outwards arched elastic claw arms 121 are propped and reinforced, the compressive strength of the elastic claw arms 121 is ensured, the winding shaft and the rotary knob limit the claw 12 up and down, the claw 12 cannot be bent upwards or downwards due to stress, and the lasting and smooth operation of the mechanism is ensured. Pulling out the knob along the axial direction causes the button teeth 211 and the claw teeth 122 to be separated, or causes the driving part and the driven part to be separated, so that the rotation stopping of the winding shaft can be unlocked, and the rope loosening prevention object is realized.

In another embodiment, the annular tooth wall 21 extends into the bottom annular groove of the bottom cover a dimension less than the distance the knob is pulled out when the cord is released. This structure allows the button teeth 211 to be disengaged from the pawl teeth 122 when the cord is released and the knob is pulled out to disengage the annular tooth wall 21 from the bottom ring groove.

In another embodiment, the button body 2 includes a button top wall 22 and button side walls 23. This structure allows the knob to be formed as a contained internal structure, and the knob sidewall 23 facilitates the handling operation by the operator.

In another embodiment, the annular surface of the annular tooth wall 21 is located at the inner ring of the annular surface of the bottom side wall 11, and the annular tooth wall 21 is formed on the inner side surface of the button top wall 22. This configuration facilitates the insertion of annular tooth wall 21 into the bottom ring groove to allow corresponding engagement of button tooth 211 with pawl tooth 122.

In a further embodiment of the present invention, the distance from the root of button tooth 211 to the axis of the winding shaft is smaller than equal to the distance from the tips of the pawl 122 to the winding shaft axis. The structure can lead the elastic claw arm 121 to generate micro deformation to the inner ring after the annular tooth wall 21 and the button tooth 211 extend into, generate a certain pretightening force for the cooperation of the claw tooth 122 and the button tooth 211, and ensure the cooperation and the clamping of the claw tooth 122 and the button tooth 211 to be efficient and smooth.

In another embodiment, a button gap is provided between the annular tooth wall 21 and the button side wall 23. The button gap is favorable for integrally demolding and forming the button side wall 23 and the annular tooth wall 21, and the forming precision of the resin material is not influenced at least by the excessive thickness of the root parts of the annular tooth wall 21 and the button side wall 23; and the knob clearance can be used for the wall extending part 1141 to extend into for inner and outer radial limiting, so that the rotation precision, stability and smoothness of the knob are ensured.

In another embodiment, a button ring groove 24 is formed between the annular tooth wall 21 and the button side wall 23 to limit the penetration of the wall penetration 1141. The wall extending portion 1141 extends into the button ring groove 24 between the annular tooth wall 21 and the button side wall 23, so that the button side wall 23, the wall extending portion 1141 and the button ring groove 24 are mutually embedded and form a sleeved inner ring and an outer ring, and the radial limit is mutually formed, so that the smooth and steady matching of the annular tooth wall 21 and the claw 12, the smooth and steady rotation of the knob, and the difficulty in shaking or deflection lifting of the knob are ensured.

In another embodiment, the depth of the button groove 24 is greater than the distance that the knob is pulled out when the cord is loosened. The structure can ensure that the knob is not easy to shake or deflect and lift while ensuring smooth and stable rotation of the knob and difficult shaking when loosening the rope and pulling out the knob to separate the knob teeth 211 from the claw teeth 122 and the knob side wall 23, the wall extending part 1141 and the knob ring groove 24 are mutually embedded and form the sleeve of the inner ring and the outer ring to mutually radially limit.

In another embodiment, the button groove 24 has an inner ring groove wall 241 corresponding to the inner ring side of the wall-extending portion 1141, and an outer ring groove wall 242 corresponding to the outer ring side of the wall-extending portion 1141; the inner ring groove wall 241 is parallel to the inner ring side of the wall protruding portion 1141, and the outer ring groove wall 242 is parallel to the outer ring side of the wall protruding portion 1141. The structure can ensure that the button side wall 23, the wall extending part 1141 and the button ring groove 24 are mutually inserted and matched and perform relatively parallel stable rotation, and the three parts form a tiny bending gap, so that foreign matters and the like are prevented from entering the inside, and the durable, stable and smooth operation of each part is ensured.

In another embodiment, outer race groove wall 242 extends to the lower end of button side wall 23. The structure can combine the inner side surface of the outer ring groove wall 242 and the button side wall 23 to form an integral side surface which is parallel and tightly matched with the outer side of the wall extending part 1141 or the bottom side wall 11, the corresponding matching surfaces of the knob and the bottom cover are increased, the knob is limited and runs stably, the knob is not easy to turn over, the direct demoulding and forming in the knob are facilitated, and the complexity of a die is reduced.

In another embodiment, the knob post 25 extending downwardly into the winding shaft bore 33 is provided at the rotational axis of the knob top wall 22. The knob post 25 can extend into the winding shaft to form internal and external matching, so that the rotation coaxiality and the stability and smoothness of the knob and the winding shaft are ensured.

In another embodiment, buttonposts 25 include a post body 251 at the upper portion and a snap ring at the lower portion. The buttonposts 25 are in snap fit with corresponding parts of the winding shaft, such as the elastic clamping parts 34, so that relative rotation can be realized, and meanwhile, the axial snap limiting function can be realized; and the post body 251 can be engaged with the shaft hole 33 corresponding to the winding shaft to ensure the coaxiality of the relative rotation.

In another embodiment, the snap ring includes an upper snap ring 252 at the top and a lower snap ring 253 at the bottom. The upper clamping ring 252 and the lower clamping ring 253 can be used for being matched with the elastic clamping part 34 of the winding shaft, when the knob is pressed in, the elastic clamping part 34 is clamped above the upper clamping ring 252 to achieve the clamping effect, and the button teeth 211 are matched with the claw teeth 122 and the driving teeth 26 are matched with the driven teeth 321; when the knob is pulled out, the elastic clamping part 34 is clamped below the upper clamping ring 252 to achieve the clamping effect, and the button teeth 211 are kept to be separated from the claw teeth 122 or the driving teeth 26 are kept to be separated from the driven teeth 321; and simultaneously, the lower clamping ring 253 is clamped at the elastic clamping part 34 of the winding shaft to prevent the buttonhole 25 from being completely pulled out.

In another embodiment, the diameter of the upper snap ring 252 is smaller than the diameter of the lower snap ring 253. The structure can ensure that when the upper clamping ring 252 and the elastic clamping part 34 are matched for clamping, the lower clamping ring 253 and the elastic clamping part 34 have larger clamping size on the basis of realizing the up-down clamping positioning, and ensure the clamping strength of the lower clamping ring 253 and the elastic clamping part 34, so that the buttonstud 25 can realize the insertion and the extraction positioning with a certain range of axes in the shaft hole 33 of the winding shaft and is not easy to be completely extracted.

In another embodiment, the diameter of the upper snap ring 252 is smaller than the diameter of the post body 251. This structure can facilitate the insertion of the upper snap ring 252 into the shaft hole 33 when the post body 251 corresponds to the inner diameter of the shaft hole 33 of the winding shaft, while also reserving space for the size of the lower snap ring 253, such as facilitating the insertion of the lower snap ring 253 into the shaft hole 33 when the diameter of the lower snap ring 253 is smaller than or equal to the diameter of the post body 251, while also facilitating the lower snap ring 253 and the elastic clip portion 34 to have a larger bayonet size than the upper snap ring 252.

In another embodiment, the diameter of the lower snap ring 253 is less than or equal to the diameter of the post body 251. This structure makes it possible to facilitate the insertion of the lower snap ring 253 into the shaft hole 33 when the post body 251 corresponds to the inner diameter of the shaft hole 33 of the winding shaft, and also facilitates the removal of the portion of the post body 251 while facilitating the removal of the lower snap ring 253 from the mold by the elastic clip portion 34 having a larger bayonet size than the upper snap ring 252.

In another embodiment, an upper neck 254 is formed between the upper snap ring 252 and the buttonhole 25. The elastic clamping portion 34 is clamped at the upper neck portion 254 to achieve a clamping effect when the knob is pressed in, and the retaining button teeth 211 are matched with the claw teeth 122 and the driving teeth 26 are matched with the driven teeth 321.

In another embodiment, a lower neck 255 is formed between the lower snap ring 253 and the upper snap ring 252. When the knob is pulled out, the elastic clamping part 34 is clamped at the lower neck part 255 to realize the clamping effect, and the retaining button teeth 211 are separated from the claw teeth 122 or the driving teeth 26 are separated from the driven teeth 321.

In another embodiment, the edge of the upper snap ring 252 has a compliant slide-over ramp 6 for the arm latch 342 of the winding shaft to slide over. The upper clamping ring 252 presses the arm clamping block 342 of the winding shaft through the inclined plane 6 in a sliding mode so that the elastic clamping arm 341 elastically swings outwards, the arm clamping block 342 slides through the upper clamping ring 252 in a sliding mode, and the switching of the clamping positions of the arm clamping block 342 above and below the upper clamping ring 252 is achieved.

In another embodiment, lower snap ring 253 has a ring anti-slip surface 2531 that faces upward and retains arm latch 342. When the knob is pulled out, the lower snap ring 253 is caught at the arm catch 342 by the ring anti-drop catching surface 2531, preventing the knob from being completely separated from the bottom cover.

In another embodiment, ring anti-slip-off surface 2531 is a plane perpendicular to the axis of buttonstud 25. The structure can ensure that the force of the ring anti-falling clamping surface 2531 to the arm clamping block 342 is distributed along the axial direction when the button post 25 is to be pulled out, and the outward component force to the arm clamping block 342 can not be generated to cause the outward swing of the elastic clamping part 34 to generate the tripping condition; and the ring anti-falling clamping surface 2531 is easier to be demoulded and molded than the back-off structure.

In another embodiment, the lower end of the lower snap ring 253 has a downward facing ring incline 2532, and the ring incline 2532 gradually slopes from top to bottom in the direction of the axis of the buttonstud 25. When the knob post 25 is inserted into the shaft hole 33, the lower snap ring 253 passes through the arm block 342 with the ring slope 2532 as it passes through the arm block 342.

In another embodiment, the upper snap ring 252 and the lower snap ring 253 are each full-circle rings. This structure can realize continuous and smooth relative rotation of the buttonposts 25 and the winding shaft.

In another embodiment, a post hole 256 is formed in the interior of buttonhole 25. The thickness of the material of the buttonposts 25 can be reduced by the post holes 256, so that the molding deformation of the resin material is avoided, and the molding precision is ensured.

In another embodiment, a post hole 256 is formed at the lower end of the buttonpost 25 and has a length less than or equal to the length of the buttonpost 25. The structure ensures the strength of the button post 25 and the thickness and strength of the button top wall 22 above the post hole 256, simultaneously reduces the thickness of the material of each part of the button post 25 as much as possible, avoids the molding deformation of the resin material and ensures the molding precision.

In another embodiment, the knob body 2 is provided with a driving part for driving the winding shaft to rotate. The knob drives the driven part of the winding shaft to drive the winding shaft to rotate along the rope tightening direction through the driving part, and prevents the winding shaft from rotating along the rope loosening direction through the cooperation of the driving part and the driven part.

In another embodiment, the drive portion is a drive tooth 26 formed on at least one of Niu Dingbi and buttonstud 25. The driving part performs meshing and interlocking to the driven part through the driving teeth 26.

In another embodiment, the drive teeth 26 include a plurality of teeth cells 261 that uniformly encircle the buttonposts 25. The driving teeth 26 are engaged and linked with the driven part at any angle in all directions by a plurality of tooth monomers 261.

In another embodiment, the tooth unit 261 has a tooth driving surface 2611 facing in the rope tightening direction and a tooth driving surface 2612 facing in the rope loosening direction; the driving tooth back surface 2612 is an inclined surface gradually inclined from top to bottom towards the direction of the tightening rope object. The tooth unit 261 is engaged with the driven tooth 321 of the driven part at any angle in all directions by the driving tooth back surface 2612, and drives and resists the driven tooth 321 by the driving tooth surface 2611 to prevent reverse rotation.

In another embodiment, the driving tooth surface 2611 extends from top to bottom along the winding shaft axis direction. The driving tooth surface 2611 with the structure can be matched with the driven surface 32111 of the driven tooth 321 to be propped and clamped, and has the functions of driving and preventing reverse rotation on the winding shaft.

In another embodiment, the driving tooth surface 2611 is a slope gradually inclined from top to bottom toward the tightening rope object direction. The driving tooth surface 2611 with the structure can be matched with the driven surface 32111 of the driven tooth 321 to resist and clamp, and the effects that the larger the reverse force of the winding shaft is, the tighter the driving tooth surface 2611 can be meshed with the driven surface 32111 of the driven tooth 321 are, so that the clamping firmness is ensured.

In another embodiment, the driving teeth 26 are positioned on the inner ring of the button teeth 211 and have a containing gap for containing the claw 12 with the button teeth 211. The structure is favorable for realizing the matching of the button teeth 211, the clamping claws 12 and the driving teeth 26 in a small space, the structure is compact and stable, and the button teeth 211 and the clamping claws 12 at the periphery have enough movable space, and are favorable for ensuring the elastic release space and strength of the clamping claws 12.

In another embodiment, the distance between the drive teeth 26 and the button teeth 211 is greater than the sum of the radial thickness of the resilient pawl arm 121 and the tooth height of the pawl teeth 122. This structure ensures that there is enough space between the driving teeth 26 and the button teeth 211 for the jaws 12 to swing inside and outside.

In another embodiment, the drive teeth 26 are formed on the inner surface of the button top wall 22 with a post clearance 27 from the button post 25. The driving teeth 26 are formed on the Niu Dingbi, so that the knob can realize the direct separation or matching state of the driving teeth 26 and the driven teeth 321 through the action of pulling out or approaching to the bottom cover; and the column gap 27 can be used for the inner wall 323 of the upper shaft of the winding shaft to extend into for inner and outer radial limiting, so that the relative rotation coaxiality of the knob and the winding shaft is ensured, and the column gap 27 enables the driving teeth 26 to be separated from the root of the knob column 25, so that the influence on the forming precision due to the too thick material is avoided.

In another embodiment, the post void 27 is sized to receive the upper shaft inner wall 323 of the winding shaft. The column gap 27 allows the upper shaft inner wall 323 of the winding shaft to extend into the inner and outer radial limiting, so that the relative rotation coaxiality of the knob and the winding shaft is ensured.

In another embodiment, the upper surface edge of the button top wall 22 is formed with an annular protrusion 28 corresponding to the button groove 24. The annular protrusion 28 may form a sufficient thickness at the location of the button top wall 22 corresponding to the button ring groove 24, so that the button ring groove 24 has a sufficient depth to cooperate with the wall extending portion 1141, and at the same time, ensure the strength of the button top wall 22 at the location, and also form an area for accommodating a decoration component such as a glue drop, a logo pattern, etc. on the inner ring of the annular protrusion 28, so as to protect the decoration component.

In another embodiment, the button body 2, the annular tooth wall 21, the button teeth 211, the button post 25 and the driving portion are integrally injection molded. The knob with all the components integrally injection molded can ensure the strength, reduce the cost and improve the efficiency.

A winding shaft, as shown in fig. 1-17, comprising a shaft body; the shaft body comprises a winding body 31 which is positioned at the inner ring of the bottom side wall 11 and corresponds to the lower part of the clamping jaw 12, and an upper shaft part 32 which corresponds to the inner ring of the clamping jaw 12; the ring surface where the maximum outer diameter of the winding body 31 and the upper shaft portion 32 is located is closer to the axis of the winding shaft than the ring surface where the bottom side wall 11 is located. In the actual use process, the winding shaft is matched with the knob and the bottom cover, the claw 12 is positioned above the winding main body 31 of the winding shaft to axially limit the winding shaft, the claw 12 radially limits the upper shaft part 32 of the winding shaft positioned at the inner ring, the annular tooth wall 21 of the knob stretches into the outer side of the claw 12 of the bottom cover, the button teeth 211 are correspondingly matched with the claw teeth 122, and the driving part of the knob is matched with the driven part of the winding shaft; when a user rotates the knob along the direction of tightening the rope object, the driven part is driven by the driving part to drive the winding shaft to wind the rope object, the button teeth 211 slide through the claw teeth 122 in a homeopathic manner and are clamped by the claw teeth 122 at corresponding positions, the knob is prevented from reversing, and further the winding shaft is prevented from reversing, so that the winding shaft tightens the rope object and keeps at the corresponding positions. The winding shaft is limited by the axial direction and the radial direction of the clamping jaw 12 at the same time, and the winding shaft rotates stably and smoothly and is not easy to shake; the annular surfaces of the elastic claw arms 121 and the bottom side wall 11 are staggered, so that the upper demolding and the lower demolding are facilitated, the annular surfaces are more inward than the bottom side wall 11, the integrally formed elastic claw arms 121 can directly limit the winding shaft in the axial direction, simultaneously, the outward claw teeth 122 and the inward claw teeth 211 are convenient to be matched with each other directly above the winding shaft, the claw teeth 211 and the button side wall 23 can be retracted inwards, the button side wall 23 can move close to the bottom side wall 11, the structure is compact and stable, sundries are prevented from entering to affect the operation of an internal mechanism, the outer sides of the outwards arched elastic claw arms 121 are propped and reinforced, the compressive strength of the elastic claw arms 121 is ensured, the winding shaft and the rotary knob limit the claw 12 up and down, the claw 12 cannot be bent upwards or downwards due to stress, and the lasting and smooth operation of the mechanism is ensured. Pulling out the knob along the axial direction causes the button teeth 211 and the claw teeth 122 to be separated, or causes the driving part and the driven part to be separated, so that the rotation stopping of the winding shaft can be unlocked, and the rope loosening prevention object is realized.

In another embodiment, the winding body 31 includes a shaft upper wall 311 corresponding to a position below the jaws 12, a shaft lower wall 312 positioned below the shaft upper wall 311, and a shaft body 313 connected between the shaft upper wall 311 and the shaft lower wall 312; the diameter of the shaft body 313 is smaller than the diameters of the shaft upper wall 311 and the shaft lower wall 312. This structure allows the shaft body 313 to have a space for winding the rope between the shaft upper wall 311 and the shaft lower wall 312, and the winding shaft winds the rope by the shaft body 313, and the shaft upper wall 311 and the shaft lower wall 312 can limit the wound rope in the up-down direction.

In another embodiment, the edge of the upper shaft wall 311 is formed with a wall notch 3111 for the inner clip 112 to pass through. When the winding shaft is fitted into the bottom cover, the shaft upper wall 311 may be directly fitted through the wall notch 3111 in correspondence with the inner click 112.

In another embodiment, the upper shaft portion 32 includes a driven portion corresponding to the driving portion for driving. The winding shaft is matched with the driving part of the knob through the driven part, is driven by the knob to drive the winding shaft to rotate along the direction of tightening the rope object, and is prevented from rotating along the direction of loosening the rope object through the matching of the driving part and the driven part.

In another embodiment, the driven portion is a driven tooth 321 corresponding to the driving tooth 26. The driven part is engaged and linked with the driving teeth 26 through the driven teeth 321.

In another embodiment, driven tooth 321 includes a plurality of individual teeth 3211 that evenly encircle the axis of the winding shaft. Driven tooth 321 is realized in all directions by a plurality of single teeth 3211 any angle cooperates with the drive teeth 26 for snap-fit engagement.

In another embodiment, the single tooth 3211 has a driven surface 32111 facing the rope loosening direction and a driven surface 32112 facing the rope tightening direction; the driven back surface 32112 is gradually changed from top to bottom inclined plane inclined towards the direction of the tightening rope object. The single teeth 3211 are engaged and linked by the driven back surface 32112 by the drive teeth 26 being engaged in any angle in all directions, and are driven and blocked by the drive teeth 26 by the driven surface 32111 to prevent reverse rotation.

In another embodiment, the driven surface 32111 extends from top to bottom along the axial direction of the winding shaft. The driven surface 32111 of the structure can be matched with the driving tooth surface 2611 of the driving tooth 26 to be propped and clamped, and has the functions of driving and preventing reverse rotation on the winding shaft.

In another embodiment, the driven surface 32111 is an inclined surface gradually inclined from top to bottom toward the rope tightening object. The driven surface 32111 with the structure can be matched with the driving tooth surface 2611 of the driving tooth 26 to resist and clamp, and has the effects of driving and preventing reverse rotation of the driven tooth 321, and the greater the reverse rotation force of the winding shaft, the tighter the driven surface 32111 can be meshed with the driving tooth surface 2611 of the driving tooth 26, so that clamping firmness is ensured.

In another embodiment, the upper shaft portion 32 includes an upper shaft outer wall 322 that is positioned about the outer periphery of the driven tooth 321 and corresponds to the pawl 12. The upper shaft outer wall 322 can replace the driven tooth 321 to correspond to the claw 12, and even if the upper shaft outer wall contacts the claw 12, the claw 12 is not scratched, and the driving tooth 26 clamped into the driven tooth 321 can be radially limited, so that the matching coaxiality of the driving tooth 26 and the driven tooth 321 is ensured; but also may enhance driven tooth 321.

In another embodiment, the upper shaft portion 32 includes an upper shaft inner wall 323 that is inner race of the driven tooth 321 and corresponds to the buttonstud 25. The upper shaft outer wall 322 can replace the driven teeth 321 to correspond to the buttonposts 25, and even if the upper shaft outer wall contacts the buttonposts 25, the buttonposts 25 are not scratched, and the driving teeth 26 clamped into the driven teeth 321 can be radially limited, so that the matching coaxiality of the driving teeth 26 and the driven teeth 321 is ensured; but also may enhance driven tooth 321.

In another embodiment, the shaft body is formed with a shaft hole 33 into which the knob post 25 extends. The shaft hole 33 can be used for the knob post 25 of the knob to extend into the interior and exterior to form the fit, so that the rotation coaxiality and the stability and smoothness of the knob and the winding shaft are ensured.

In a further embodiment of the present invention, the shaft hole 33 penetrates the shaft body up and down along the axis of the shaft body. The structure is beneficial to the whole winding shaft to be matched with the buttonposts 25 through the shaft holes 33, ensures the axial matching size and ensures the rotation coaxiality and the stability and smoothness of the knob and the winding shaft; but also facilitates the demolding and forming of the elastic clamping part 34.

In another embodiment, the upper portion or the lower portion of the shaft hole 33 is a circular hole that is radially limited in cooperation with the peripheral surface of the knob post 25. The shaft hole 33 in the form of a circular hole can be in continuous and stable rotational engagement with the buttonstud 25.

In another embodiment, the button assembly further comprises an elastic clamping part 34 which is arranged at the shaft hole 33 and matched with the button post 25. The winding shaft is in snap fit with the snap ring of the buttonstud 25 by means of the elastic snap portion 34, the relative rotation can be realized, and the axial buckle limit function can be realized; and the elastic clamping part 34 can generate certain elastic clamping on the buttonposts 25, so that the buttonposts 25 are prevented from shaking.

In another embodiment, the elastic clamping portion 34 includes an elastic clamping arm 341 disposed on a wall of the shaft hole 33, and an arm clamping block 342 disposed at a free end of the elastic clamping arm 341 and matched with the clamping ring. The elastic clamping part 34 is matched with the upper clamping ring 252 and the lower clamping ring 253 of the winding shaft, the button column 25 drives the clamping ring to move along the axial direction and can extrude the arm clamping block 342 to drive the elastic clamping arm 341 to elastically swing outwards, and when extrusion force is lost, the elastic clamping arm 341 drives the arm clamping block 342 to restore to the original position inwards; when the knob is pressed in, the elastic clamping part 34 is clamped above the upper clamping ring 252 to achieve the clamping effect, and the button teeth 211 are matched with the claw teeth 122 and the driving teeth 26 are matched with the driven teeth 321; when the knob is pulled out, the elastic clamping part 34 is clamped below the upper clamping ring 252 to achieve the clamping effect, and the button teeth 211 are kept to be separated from the claw teeth 122 or the driving teeth 26 are kept to be separated from the driven teeth 321; and simultaneously, the lower clamping ring 253 is clamped at the elastic clamping part 34 of the winding shaft to prevent the buttonhole 25 from being completely pulled out.

In another embodiment, the arms 342 protrude into the region of the shaft aperture 33. The arm block 342 protruding into the region of the shaft hole 33 can be engaged with the snap ring to achieve the click effect.

In another embodiment, the edge of the arm block 342 has a smooth ramp 6 over which the upper snap ring 252 slides. The upper clamping ring 252 presses the arm clamping block 342 of the winding shaft through the inclined plane 6 in a sliding mode so that the elastic clamping arm 341 elastically swings outwards, the arm clamping block 342 slides through the upper clamping ring 252 in a sliding mode, and the switching of the clamping positions of the arm clamping block 342 above and below the upper clamping ring 252 is achieved.

In another embodiment, the arm latch 342 has an arm anti-slip-off surface 3421 facing downward for the loop anti-slip-off surface 2531 to latch. When the knob is pulled out, the lower snap ring 253 is caught at the arm drop-preventing catch surface 3421 by the ring drop-preventing catch surface 2531, preventing the knob from being completely separated from the bottom cover.

In a further embodiment of the present invention, the arm anti-release surface 3421 is a plane perpendicular to the axis of the buttonstud 25. The structure can ensure that the force of the ring anti-falling clamping surface 2531 to the arm anti-falling clamping surface 3421 is distributed along the axial direction when the button post 25 is to be pulled out, and the outward component force of the arm clamping block 342 can not be generated, so that the elastic clamping arm 341 swings outwards to generate the tripping condition.

In another embodiment, the arm anti-disengaging surface 3421 is gradually sloped downward from the outer ring to the inner ring. This configuration allows the force of the loop-retaining surface 2531 against the arm-retaining surface 3421 to cause the loop-retaining surface 2531 and the arm-retaining surface 3421 to be more tightly and more tightly when the button stem 25 is to be pulled out, the outward component force of the arm clamping block 342 is not generated, so that the elastic clamping arm 341 swings outwards to release.

In another embodiment, the elastic clamping arm 341 has an arm root connected with the hole wall of the shaft hole 33 and an arm free end for bearing the arm clamping block 342; the elastic clip arms 341 gradually extend downward from the arm root to the arm free end. When the button post 25 is inserted into the shaft hole 33 from top to bottom and passes through the arm free end, the arm clamping block 342 at the arm free end is extruded by the clamping ring to drive the elastic clamping arm 341 to elastically swing outwards, when the clamping ring slides across the arm clamping block 342, the elastic clamping arm 341 drives the arm clamping block 342 to recover to deform inwards, so that the arm clamping block 342 is matched with the clamping ring, especially when the lower clamping ring 253 is clamped at the arm clamping block 342, the lower clamping ring 253 presses the elastic clamping arm 341 along the elastic clamping arm 341 under the action of pulling-out force, and the pulling-out force is resisted by the compression resistance of the material of the elastic clamping arm 341, so that the strength for preventing the button post 25 from being pulled out is ensured.

In another embodiment, the cross-sectional area of the elastic latch arm 341 gradually increases from bottom to top. The structure can ensure that the strength of the elastic clamping arm 341 from the free end of the arm to the root of the arm gradually increases, and ensure the strength and the elastic performance of the elastic clamping arm 341.

In a further embodiment of the present invention, elastic clip arm 341 has an arm inner side surface 3411 facing inside shaft hole 33, an arm outer side surface 3412 facing in the opposite direction, and two arm side surfaces 3413 located between arm inner side surface 3411 and arm outer side surface 3412. The structure can make other parts of the elastic clamping arm 341 except the arm root part in an elastically movable state, so that the integral elastic deformation capacity of the elastic clamping arm 341 is ensured.

In another embodiment, the distance between arm inner side 3411 and arm outer side 3412 increases gradually from bottom to top. That is, the thickness of the elastic clamping arm 341 along the radial direction of the winding shaft gradually becomes thicker from the free end of the arm to the root of the arm, and the structure can ensure the elastic deformation performance and strength along the radial direction of the winding shaft; and ensure the strength of the elastic clamping arms 341 during demoulding, and is not easy to produce stacking or deformation.

In another embodiment, the distance between the two arm sides 3413 increases gradually from bottom to top. Namely, the thickness of the elastic clamping arm 341 along the axial direction of the winding shaft gradually becomes thicker from the free end of the arm to the root of the arm, and the structure can ensure the strength on the basis of ensuring that the whole elastic clamping arm 341 is easy to elastically deform along the radial direction of the winding shaft; and the strength of the elastic clip arms 341 is ensured at the time of demolding, and stacking or deformation is not easy to occur.

Another one in an embodiment of the present invention, the arm inner side 3411 is on the same cylindrical surface as the inner wall of the shaft hole 33. The structure can lead the elastic clamping arm 341 and the inner wall of the shaft clamp to limit the buttonhole 25 in the radial direction and not to interfere the relative rotation of the buttonhole 25.

In another embodiment, arm inner side 3411 is inclined gradually from top to bottom toward the axis of shaft hole 33. The structure can enable the elastic clamping arm 341 to generate a certain pretightening force on the buttonstud 25, so that the buttonstud 25 is ensured not to shake in the relative rotation process.

In another embodiment, arm outer side 3412 is parallel to the axis of shaft bore 33.

Another one in an embodiment of the present invention, arm outer side 3412 gradually slopes from top to bottom toward the axis of shaft hole 33. This structure facilitates the demolding and molding of the arm outer side 3412 from below, and is not likely to cause piling or deformation.

In another embodiment, the cross section of the elastic clamping arm 341 is circular arc around the axis of the shaft hole 33. The structure can ensure that the elastic clamping arm 341 surrounds the buttonposts 25 and can be matched with the buttonposts 25 at any angle, and the clamping force is balanced.

In a further embodiment of the present invention, at least one of the lower end surface of the elastic clamping arm 341 and the arm anti-falling clamping surface 3421 is provided with a poking part 343 for poking. When the knob needs to be disassembled, the elastic clamping arm 341 can be driven to swing outwards by pushing the poking part 343 outwards until enough space is available to allow the knob post 25 to be pulled out upwards.

In another embodiment, the poking portion 343 is a bump or a groove. The operator can apply an outward force to the resilient clip arms 341 with the toggle 343 in the form of a bump or a groove.

In another embodiment, the toggle portion 343 is a bar-shaped bump disposed between the two arm sides 3413 and extending toward the two arm sides 3413. That is, the extending direction of the poking part 343 in the form of the bar-shaped bump is perpendicular to the swinging direction of the elastic clamping arm 341, which is beneficial to the force.

In another embodiment, the shaft body is formed with a surrounding slit 35 surrounding the elastic clip arm 341. The circumferential slit 35 may serve as a space in which the elastic clip arms 341 move with respect to the main body portion of the shaft main body, and may facilitate integrally demolding and molding the elastic clip arms 341 and the shaft main body.

In another embodiment, the circumferential gap 35 is equally wide from top to bottom.

In another embodiment, the circumferential gap 35 widens gradually from top to bottom. This structure allows the surrounding slit 35 to accommodate a progressively larger swing range of the elastic clamping arm 341 from top to bottom; and the gap with small inside and large outside is beneficial to demoulding and forming.

In another embodiment, circumferential gap 35 includes a back gap 351 corresponding to arm outer side 3412 and side gaps 352 corresponding to arm sides 3413. The structure can ensure that the parts of the elastic clamping arms 341 except the arm root parts are in a free state by surrounding the gaps 35, and the demolding molding of each side surface of the elastic clamping arms 341 is facilitated.

In another embodiment, the width of at least the lower end of the back slit 351 is larger than the fastening depth of the upper clip 252 and the arm clip 342. This configuration allows the back clearance 351 sufficient space for the arm latch 342 to swing outwardly when disengaged from the upper snap ring 252.

In another embodiment, the width of at least the lower end of the back slit 351 is larger than the fastening depth of the lower snap ring 253 and the arm latch 342. This configuration allows the back clearance 351 sufficient space for the arm latch 342 to swing outwardly when the lower snap ring 253 is inserted into the lower end of the arm latch 342.

In a further embodiment of the present invention, the outer side surface of at least one of the back slit 351 and the side slit 352 is gradually inclined outward from top to bottom. This structure ensures that the surrounding slit 35 accommodates a progressively larger swing range of the elastic clip arms 341 from top to bottom; and is favorable for demoulding and forming.

In another embodiment, more than two elastic clamping portions 34 are disposed around the axis of the shaft hole 33. This structure can make more than two elastic clamping parts 34 match with the buttonposts 25 in different directions, ensuring the matching property.

In another embodiment, two or three elastic clamping portions 34 are uniformly disposed around the axis of the shaft hole 33. This construction allows two or three spring clips 34 to be provided on the evenly distributed different directions are matched with the buttonposts 25, ensuring the matching balance.

In another embodiment, the distance between the ends of the arms 342 of each resilient clip 34 is less than the outer diameter of the lower snap ring 253. This configuration allows the lower snap ring 253 to overlap each arm block 342, ensuring that the lower snap ring 253 can be locked to the lower end of the arm block 342.

In another embodiment, the distance between the ends of the arms 342 of each resilient clip 34 is less than the outer diameter of the upper clip 252. This structure can make the upper clamp ring 252 and each arm clamp block 342 have an overlapping area, so as to ensure that the upper clamp ring 252 and the arm clamp block 342 generate a clamping function.

In another embodiment, the end of the arm latch 342 is rounded to mate with at least one of the upper neck 254 and the lower neck 255. This configuration allows the latch 342 to mate with either the upper neck 254 or the lower neck 255, the knob post 25 is ensured to rotate stably and smoothly relative to each other, and is not easy to shake.

In another embodiment, the resilient clip portion 34 is integrally injection molded with the shaft body. This structure can ensure the strength of the elastic clamping portion 34, reduce the cost and improve the efficiency.

A rope turnbuckle, as shown in figures 1-17, comprises a bottom cover, a knob and a winding shaft which are cooperatively installed together. In the actual use process, the knob, the bottom cover and the winding shaft are matched, the structures of the knob can be directly and vertically demoulded and molded, the claw 12 is positioned above the winding main body 31 of the winding shaft to axially limit the winding shaft, the claw 12 radially limits the upper shaft part 32 of the winding shaft positioned at the inner ring, the annular tooth wall 21 of the knob stretches into the outer side of the claw 12 of the bottom cover, the button teeth 211 are correspondingly matched with the claw teeth 122, and the driving part of the knob is matched with the driven part of the winding shaft; when a user rotates the knob along the direction of tightening the rope object, the driven part is driven by the driving part to drive the winding shaft to wind the rope object, the button teeth 211 slide through the claw teeth 122 in a homeopathic manner and are clamped by the claw teeth 122 at corresponding positions, the knob is prevented from reversing, and further the winding shaft is prevented from reversing, so that the winding shaft tightens the rope object and keeps at the corresponding positions. The winding shaft is limited by the axial direction and the radial direction of the clamping jaw 12 at the same time, and the winding shaft rotates stably and smoothly and is not easy to shake; the annular surfaces of the elastic claw arms 121 and the bottom side wall 11 are staggered, so that the upper demolding and the lower demolding are facilitated, the annular surfaces are more inward than the bottom side wall 11, the integrally formed elastic claw arms 121 can directly limit the winding shaft in the axial direction, simultaneously, the outward claw teeth 122 and the inward claw teeth 211 are convenient to be matched with each other directly above the winding shaft, the claw teeth 211 and the button side wall 23 can be retracted inwards, the button side wall 23 can move close to the bottom side wall 11, the structure is compact and stable, sundries are prevented from entering to affect the operation of an internal mechanism, the outer sides of the outwards arched elastic claw arms 121 are propped and reinforced, the compressive strength of the elastic claw arms 121 is ensured, the winding shaft and the rotary knob limit the claw 12 up and down, the claw 12 cannot be bent upwards or downwards due to stress, and the lasting and smooth operation of the mechanism is ensured. Pulling out the knob along the axial direction causes the button teeth 211 and the claw teeth 122 to be separated, or causes the driving part and the driven part to be separated, so that the rotation stopping of the winding shaft can be unlocked, and the rope loosening prevention object is realized.

In another embodiment, the bottom cover includes a claw 12, the claw 12 having claw teeth 122; the knob has drive teeth 26 and button teeth 211 that mate with pawl teeth 122; the winding shaft has driven teeth 321 for driving the driving teeth 26; the size of the overlapping area when the claw 122 is matched with the button tooth 211 in the up-down direction is smaller than the distance for pulling out the knob when the rope is loosened; the overlap area when the driving teeth 26 and the driven teeth 321 are engaged is smaller in the up-down direction than the distance by which the knob is pulled out when the string is loosened. The structure can ensure that the claw teeth 122 are completely separated from the button teeth 211 when the rope releasing object is pulled out of the knob, the driving teeth 26 are also completely separated from the driven teeth 321, no interference is generated, and the winding shaft and the knob are in a free state.

In another embodiment, the bottom cover includes a claw 12, the claw 12 having claw teeth 122; the knob has drive teeth 26 and button teeth 211 that mate with pawl teeth 122; the button tooth 211 has a tooth clamping surface 2111 which mates with the tooth clamping surface 1221 of the pawl tooth 122 and a tooth counter surface 2112 which mates with the tooth counter surface 1222 of the pawl tooth 122. Latch surface 2111 mates with corresponding tooth latch surface 1221 of pawl 122 to ensure anti-reverse rotation of pawl 12; the spur surface 2112 cooperates with the corresponding tooth surface 1222 of the tooth 122 to produce a clockwise force against the tooth 122 by the inner ring to slide the button 211 clockwise past the tooth 122, thereby ensuring that the knob can rotate in one direction relative to the jaw 12.

In a further embodiment of the present utility model, the spur surface 2112 gradually slopes toward the rope loosening direction from the root to the tip of the button 211. This structure ensures the smoothness of the relative sliding of the tooth-forward surface 2112 and the tooth-forward surface 1222.

In another embodiment, the latch face 2111 is planar through the winding shaft axis. Latch face 2111 of this configuration may mate against a corresponding tooth latch face 1221 of pawl 122, the rotating button has the function of preventing reverse rotation.

In another embodiment, the plane of the latch surface 2111 gradually inclines from the root to the tip of the tooth toward the object of screwing the rope. The latch surface 2111 with this structure can be matched with the corresponding tooth latch surface 1221 of the claw 122 to be propped against and clamped, so that the latch surface 2111 and the corresponding tooth latch surface 1221 of the claw 122 can be tightly meshed with each other when the reverse rotation of the knob is prevented, and the clamping firmness is ensured.

A shoe, as shown in fig. 1-17, includes a shoe body 5 and a cord turnbuckle mounted on the shoe body 5. In the actual use process, the knob, the bottom cover and the winding shaft of the rope turnbuckle are matched, each structure of the knob can be directly and vertically demoulded and molded, the claw 12 is positioned above the winding main body 31 of the winding shaft to axially limit the winding shaft, the claw 12 radially limits the upper shaft part 32 of the winding shaft positioned at the inner ring, the annular tooth wall 21 of the knob stretches into the outer side of the claw 12 of the bottom cover to enable the button teeth 211 to be correspondingly matched with the claw teeth 122, and the driving part of the knob is matched with the driven part of the winding shaft; when a user rotates the knob along the direction of tightening the rope object, the driven part is driven by the driving part to drive the winding shaft to wind the rope object, the button teeth 211 slide through the claw teeth 122 in a homeopathic manner and are clamped by the claw teeth 122 at corresponding positions, the knob is prevented from reversing, and further the winding shaft is prevented from reversing, so that the winding shaft tightens the rope object and keeps at the corresponding positions. The winding shaft is limited by the axial direction and the radial direction of the clamping jaw 12 at the same time, and the winding shaft rotates stably and smoothly and is not easy to shake; the annular surfaces of the elastic claw arms 121 and the bottom side wall 11 are staggered, so that the upper demolding and the lower demolding are facilitated, the annular surfaces are more inward than the bottom side wall 11, the integrally formed elastic claw arms 121 can directly limit the winding shaft in the axial direction, simultaneously, the outward claw teeth 122 and the inward claw teeth 211 are convenient to be matched with each other directly above the winding shaft, the claw teeth 211 and the button side wall 23 can be retracted inwards, the button side wall 23 can move close to the bottom side wall 11, the structure is compact and stable, sundries are prevented from entering to affect the operation of an internal mechanism, the outer sides of the outwards arched elastic claw arms 121 are propped and reinforced, the compressive strength of the elastic claw arms 121 is ensured, the winding shaft and the rotary knob limit the claw 12 up and down, the claw 12 cannot be bent upwards or downwards due to stress, and the lasting and smooth operation of the mechanism is ensured. Pulling out the knob along the axial direction causes the button teeth 211 and the claw teeth 122 to be separated, or causes the driving part and the driven part to be separated, so that the rotation stopping of the winding shaft can be unlocked, and the rope loosening prevention object is realized.

An article, as shown in fig. 1-17, includes an article body and a cord turnbuckle mounted on the article body. In the actual use process, the knob, the bottom cover and the winding shaft of the rope turnbuckle are matched, each structure of the knob can be directly and vertically demoulded and molded, the claw 12 is positioned above the winding main body 31 of the winding shaft to axially limit the winding shaft, the claw 12 radially limits the upper shaft part 32 of the winding shaft positioned at the inner ring, the annular tooth wall 21 of the knob stretches into the outer side of the claw 12 of the bottom cover to enable the button teeth 211 to be correspondingly matched with the claw teeth 122, and the driving part of the knob is matched with the driven part of the winding shaft; when a user rotates the knob along the direction of tightening the rope object, the driven part is driven by the driving part to drive the winding shaft to wind the rope object, the button teeth 211 slide through the claw teeth 122 in a homeopathic manner and are clamped by the claw teeth 122 at corresponding positions, the knob is prevented from reversing, and further the winding shaft is prevented from reversing, so that the winding shaft tightens the rope object and keeps at the corresponding positions. The winding shaft is limited by both the axial and radial directions of the jaws 12, the winding shaft rotates smoothly and stably, and is not easy to shake; the elastic claw arm 121 and the bottom side wall 11 are staggered in the ring surface, so that the upper and lower demolding processing is facilitated, the ring surface is more inward than the bottom side wall 11, the integrally formed elastic claw arm 121 can directly perform stronger axial limit on the winding shaft, simultaneously, the outward claw teeth 122 and the inward button teeth 211 are conveniently matched directly above the winding shaft, the button teeth 211 and the button side wall 23 can be more inward retracted, the button side wall 23 can run close to the bottom side wall 11, the structure is compact and stable, sundries are prevented from entering the device to affect the operation of the internal mechanism, the outer sides of the outwards arched curved elastic claw arms 121 are propped and reinforced, the compressive strength of the elastic claw arms 121 is ensured, the winding shaft and the knob are enabled to limit the claw 12 up and down, the claw 12 cannot be bent upwards or broken downwards due to stress, and the lasting and smooth operation of the mechanism is ensured. Pulling out the knob along the axial direction causes the button teeth 211 and the claw teeth 122 to be separated, or causes the driving part and the driven part to be separated, so that the rotation stopping of the winding shaft can be unlocked, and the rope loosening prevention object is realized.

The form of the present utility model is not limited to the illustrations and examples, and any person who performs a similar idea of the present utility model should be regarded as not departing from the scope of the patent of the utility model.

Claims (152)

1. A bottom cover comprises a bottom main body, wherein the bottom main body comprises a bottom side wall, the direction facing a knob is the upper direction, and the opposite direction is the lower direction; the method is characterized in that: the clamping jaw is arranged on the bottom side wall and integrally formed in an area above the lower end of the bottom side wall; the claw comprises an elastic claw arm and claw teeth, the elastic claw arm extends along the axial direction of the winding shaft, and the claw teeth are formed on the elastic claw arm and face the outer ring; the elastic claw arm is in an outwards arched arc shape, and the ring surface where the elastic claw arm is located is closer to the axis of the winding shaft than the ring surface where the bottom side wall is located.

2. The bottom cover according to claim 1, wherein: the ring surface where the elastic claw arm is positioned at the inner ring surface where the bottom side wall is positioned.

3. The bottom cover according to claim 1, wherein: the projection of the elastic claw arm on the plane perpendicular to the winding shaft axis is positioned on the projection inner ring of the bottom side wall on the plane perpendicular to the winding shaft axis.

4. The bottom cover according to claim 1, wherein: the claw is provided with an accommodating space for accommodating the winding shaft between the claw and the lower end of the bottom side wall.

5. The bottom cover according to claim 1, wherein: the claw is formed at the upper part of the bottom side wall.

6. The bottom cover of any one of claims 1-5, wherein: more than two jaws are arranged around the axis of the winding shaft with the free ends facing the same.

7. The bottom cover of claim 6, wherein: two, three or four jaws are uniformly arranged around the winding shaft axis.

8. The bottom cover of claim 6, wherein: the claw teeth are formed at least at one of the outer ring side and the end portion of the elastic claw arm.

9. The bottom cover of claim 8, wherein: the elastic claw arm and the inner side of the bottom side wall are provided with a claw gap.

10. The bottom cover of claim 9, wherein: the jaw gap has dimensions into which the annular tooth wall and the button teeth of the knob extend.

11. The bottom cover of claim 9, wherein: the jaw gaps form a bottom ring groove for the annular tooth wall and teeth of the knob to extend into the full circle of rotation.

12. The bottom cover of claim 9, wherein: the width of the jaw gap is greater than the sum of the thickness of the annular tooth wall of the knob and the tooth height of the button tooth.

13. The bottom cover of claim 9, wherein: the elastic claw arm is provided with a claw free end capable of swinging inwards and outwards and a claw root connected with the inner side of the bottom side wall.

14. The bottom cover of claim 13, wherein: the claw root is connected with the inner side of the bottom side wall through a root connecting part.

15. The bottom cover of claim 14, wherein: the root connecting part is connected to the lower part of the elastic claw arm.

16. The bottom cover of claim 14, wherein: the pawl tooth is at least partially higher than the root connection.

17. The bottom cover of claim 16, wherein: the pawl tooth is integrally higher than the root connecting part.

18. The bottom cover of claim 14, wherein: the resilient claw arm is at least partially above the root connection.

19. The bottom cover of claim 18, wherein: the elastic claw arm is integrally higher than the root connecting part.

20. The bottom cover of claim 14, wherein: at least one of the claw root portion and the root connecting portion has a root protruding portion protruding toward the inner ring.

21. The bottom cover of claim 20, wherein: the height of the protruding part of the root protruding part protruding towards the inner ring is more than or equal to the tooth height of the claw teeth.

22. The bottom cover of claim 21, wherein: the root protruding part of each claw forms a radial limiting space for the upper shaft part of the winding shaft to extend in.

23. The bottom cover of claim 14, wherein: the distance between the elastic claw arm and the upper shaft part of the winding shaft is larger than or equal to the tooth height of the claw teeth.

24. The bottom cover of claim 14, wherein: the root connection portion gradually widens from the root of the pawl to the inside of the bottom side wall.

25. The bottom cover of claim 14, wherein: an inner bulge is formed on the inner side of the bottom side wall.

26. The bottom cover of claim 25, wherein: the inner protrusion corresponds to the elastic claw arm.

27. The bottom cover of claim 26, wherein: the upper surface of the inner protrusion is flush with the upper surface of the root connection.

28. The bottom cover of claim 26, wherein: the lower surface of the inner protrusion is flush with the lower surface of the root connection.

29. The bottom cover of claim 26, wherein: the inner protrusion extends along an axis surrounding the winding shaft.

30. The bottom cover of claim 26, wherein: the inner protrusion is lower than an upper surface of at least one of the resilient pawl arm and the pawl tooth.

31. The bottom cover of claim 30, wherein: the inner projection is lower than at least one of the resilient pawl arm and the pawl tooth.

32. The bottom cover of claim 25, wherein: a forming notch is arranged between the inner bulge and the adjacent root connecting part.

33. The bottom cover of claim 32, wherein: the forming notch corresponds to at least one of the inner clamping part and the claw teeth up and down.

34. The bottom cover of claim 14, wherein: an inner clamping part for clamping the winding shaft is formed at the lower part of the bottom side wall.

35. The bottom cover of claim 34, wherein: the inner clamping part faces the winding shaft a step protruding in the axial direction.

36. The bottom cover of claim 35, wherein: an axial limiting space for limiting the vertical direction of the winding shaft is formed between the inner clamping part and the root connecting part.

37. The bottom cover of claim 35, wherein: the lower part of the inner clamping part is provided with an inclined plane for clamping the winding shaft.

38. The bottom cover of claim 35, wherein: the bottom side wall is provided with an elastic swing arm capable of swinging inwards and outwards, and the inner clamping part is formed at the inner side of the elastic swing arm.

39. The bottom cover of claim 38, the method is characterized in that: a gap is formed between the elastic swing arm and the main body part of the bottom side wall.

40. The bottom cover of claim 14, wherein: the upper end of the bottom side wall is provided with a protruding wall higher than the root connecting part.

41. The bottom cover of claim 40, wherein: the protruding wall is higher than the elastic claw arm.

42. The bottom cover of claim 40, wherein: the protruding wall has a wall protruding portion protruding into the button ring groove.

43. The bottom cover according to claim 42, wherein: the maximum depth of the wall extending part extending into the button ring groove is large the distance of the knob is pulled out when the rope object is loosened.

44. The bottom cover of claim 14, wherein: the elastic claw arm is provided with an arm projection extending downward.

45. The bottom cover of claim 44, wherein: the arm projection is formed on the lower surface of the elastic claw arm and extends toward the winding body of the winding shaft.

46. The bottom cover of claim 45, wherein: the lower end of the arm projection is higher than or flush with the lower surface of the root connection.

47. The bottom cover of claim 45, wherein: the protrusion height of the arm protrusion is less than or equal to the thickness of the root connection portion or the inner protrusion.

48. The bottom cover of claim 45, wherein: the arm projection is formed between both ends of the elastic claw arm and at least one of the claw free ends.

49. The bottom cover of claim 45, wherein: the distance between the arm bulge and the upper shaft part of the winding shaft is larger than or equal to the tooth height of the claw teeth.

50. The bottom cover of claim 14, wherein: the distance from the outer ring side surface of the elastic claw arm to the bottom side wall is equal, or the distance from the claw root to the claw free end gradually approaches to the bottom side wall.

51. The bottom cover of claim 14, wherein: the elastic claw arms are equidistant from the bottom side wall or gradually approach the bottom side wall from the claw root to the claw free end.

52. The bottom cover of claim 14, wherein: the claw teeth are formed on the outer ring side of the claw free ends.

53. The bottom cover of claim 52, wherein: a tooth wall gap is arranged between the claw teeth and the inner side of the bottom side wall.

54. The bottom cover of claim 6, wherein: the elastic claw arm gradually extends from the claw root to the claw free end towards the object screwing direction.

55. The bottom cover of claim 54, wherein: the claw teeth are provided with tooth root parts and tooth tip ends, and gradually incline towards the object screwing direction from the tooth root parts to the tooth tip ends.

56. The bottom cover of claim 54, wherein: the claw teeth are provided with tooth root parts and tooth tip ends, each claw tooth comprises a tooth clamping surface facing the rope screwing direction and a tooth smooth surface facing the rope loosening direction, and the tooth smooth surface gradually inclines towards the rope screwing direction from the tooth root parts to the tooth tip ends.

57. The bottom cover of claim 56, wherein: the plane of the tooth clamping surface gradually inclines towards the object screwing direction of the rope through the axis of the winding shaft or from the tooth root to the tooth tip.

58. The bottom cover of claim 54, wherein: the outer ring side of the same elastic claw arm is provided with more than two claw teeth.

59. The bottom cover of any one of claims 1-5, wherein: the bottom side wall comprises a bottom extending part extending into the containing space of the connecting seat and a rope passing part corresponding to the corresponding wall of the connecting seat.

60. The bottom cover of claim 59, wherein: the bottom side wall is formed with a rope passing portion opposite to the rope passing portion.

61. The bottom cover of claim 60, wherein: the rope passing part corresponds to the rope passing part and is positioned at two sides of the winding shaft.

62. The bottom cover of claim 61, wherein: the rope passing part comprises a rope passing hole formed on the side wall of the bottom cover.

63. The bottom cover of claim 62, wherein: the rope passing hole has a size for passing the rope clamping head.

64. The bottom cover of claim 60, wherein: the outer peripheral surface of the bottom side wall is formed with a convex ring.

65. The bottom cover of claim 64, wherein: the convex ring is at least equal to the rope passing part and the rope passing part.

66. The bottom cover of claim 65, wherein: the rope passing part is formed on the convex ring.

67. The bottom cover of claim 64, wherein: at least one of the upper surface and the lower surface of the convex ring is a plane.

68. The bottom cover of claim 64, wherein: the convex ring is provided with a ring notch corresponding to the rope passing part.

69. A knob comprising a knob body; the method is characterized in that: the button main body comprises an annular tooth wall which extends towards the bottom cover and corresponds to the clamping jaw, the annular surface where the annular tooth wall is located is closer to the axis of the winding shaft than the annular surface where the bottom side wall is located, and button teeth which face the clamping jaw are formed on the inner ring side of the annular tooth wall.

70. The knob of claim 69 wherein: the size of the annular tooth wall extending into the bottom ring groove of the bottom cover is smaller than the distance for pulling out the knob when the rope object is loosened.

71. The knob of claim 69 wherein: the button body includes a button top wall and a button side wall.

72. The knob of claim 71 wherein: the ring surface where the annular tooth wall is positioned at the inner ring of the ring surface where the bottom side wall is positioned, and the annular tooth wall is formed on the inner side surface of Niu Dingbi.

73. The knob according to claim 72, wherein: the distance from the root of the button tooth to the axis of the winding shaft is smaller than or equal to the distance from the tip of the claw tooth to the axis of the winding shaft.

74. The knob of claim 71 wherein: a button gap is provided between the annular tooth wall and the button side wall.

75. The knob according to claim 72, wherein: a button ring groove for limiting the extension part of the wall to extend is formed between the annular tooth wall and the button side wall.

76. The knob of claim 75 wherein: the depth of the button ring groove is larger than the distance for pulling out the knob when loosening the rope.

77. The knob of claim 75 wherein: the button ring groove is provided with an inner ring groove wall corresponding to the inner ring side of the wall extending part and an outer ring groove wall corresponding to the outer ring side of the wall extending part; the inner ring groove wall is parallel to the inner ring side of the wall extending portion, and the outer ring groove wall is parallel to the outer ring side of the wall extending portion.

78. The knob according to claim 77 wherein: the outer race groove wall extends to the lower end of the knob sidewall.

79. The knob according to any one of claims 71-78, wherein: the pivot axis of button roof is equipped with the button post that stretches into winding shaft hole downwards.

80. The knob according to claim 79, wherein: the buttonhole comprises a main body at the upper part and a clamping ring at the lower part.

81. The knob of claim 80 wherein: the clamping ring comprises an upper clamping ring positioned above and a lower clamping ring positioned below.

82. The knob of claim 81 wherein: the diameter of the upper clamping ring is smaller than that of the lower clamping ring.

83. The knob of claim 82 wherein: the diameter of the upper snap ring is smaller than the diameter of the column main body.

84. The knob of claim 82 wherein: the diameter of the lower clamping ring is smaller than or equal to the diameter of the column main body.

85. The knob of claim 81 wherein: an upper neck is formed between the upper snap ring and the knob post.

86. The knob according to claim 85, wherein: a lower neck is formed between the lower clamping ring and the upper clamping ring.

87. The knob of claim 81 wherein: the edge of the upper clamping ring is provided with a smooth inclined surface for the arm clamping block of the winding shaft to slide through.

88. The knob of claim 81 wherein: the lower clamping ring is provided with a ring anti-falling clamping surface which faces upwards and clamps the arm clamping block.

89. The knob of claim 88 wherein: the ring anti-falling clamping surface is a plane perpendicular to the axis of the button column.

90. The knob of claim 88 wherein: the lower end of the lower snap ring is provided with a downward ring inclined plane which gradually inclines towards the axis direction of the knob post from top to bottom.

91. The knob of claim 81 wherein: the upper clamping ring and the lower clamping ring are all whole rings.

92. The knob according to claim 79, wherein: the buttonhole is formed inside the buttonhole.

93. The knob of claim 92 wherein: the column hole is formed at the lower end of the buttonhole and the length of the column hole is smaller than or equal to the length of the buttonhole.

94. The knob according to claim 79, wherein: the button body is provided with a driving part for driving the winding shaft to rotate.

95. The knob of claim 94 wherein: the drive portion is a drive tooth formed on at least one of the Niu Dingbi and buttonposts.

96. The knob of claim 95 wherein: the drive teeth include a plurality of teeth elements that uniformly encircle the buttonposts.

97. The knob of claim 96 wherein: the tooth unit is provided with a tooth driving surface facing the rope tightening direction and a tooth driving reverse surface facing the rope loosening direction; the back surface of the driving tooth is an inclined surface which gradually inclines towards the object direction of the tightening rope from top to bottom.

98. The knob of claim 97 wherein: the driving tooth surface extends along the axial direction of the winding shaft from top to bottom, or is an inclined surface gradually inclined towards the object direction of the tightening rope from top to bottom.

99. The knob of claim 95 wherein: the driving teeth are positioned on the inner ring of the button teeth and the button teeth with a holding gap for holding the clamping claw.

100. The knob of claim 99 wherein: the distance between the driving teeth and the button teeth is larger than the elasticity the radial thickness of the pawl arm and the pawl tooth height.

101. The knob of claim 95 wherein: the driving teeth are formed on the inner surface of the button top wall and have a column gap with the button column.

102. The knob of claim 101 wherein: the post void has a size to accommodate the upper shaft inner wall of the winding shaft.

103. The knob according to any one of claims 69-78, wherein: the upper surface edge of the button top wall is formed with an annular protrusion corresponding to Niu Huancao.

104. The knob of claim 94 wherein: the button main body, the annular tooth wall, the button teeth, the button column and the driving part are integrally injection molded.

105. A winding shaft comprising a shaft body; the method is characterized in that: the shaft main body comprises a winding main body which is positioned on the inner ring of the bottom side wall and is correspondingly positioned below the clamping jaw, and an upper shaft part which correspondingly stretches into the inner ring of the clamping jaw; the annular surface where the maximum outer diameter of the winding body and the upper shaft portion is located is closer to the axis of the winding shaft than the annular surface where the bottom side wall is located.

106. The winding shaft of claim 105, wherein: the winding main body comprises an upper shaft wall, a lower shaft wall and a shaft body, wherein the upper shaft wall is correspondingly arranged below the clamping jaw, the lower shaft wall is arranged below the upper shaft wall, and the shaft body is connected between the upper shaft wall and the lower shaft wall; the diameter of the shaft body is smaller than the diameters of the shaft upper wall and the shaft lower wall.

107. The winding shaft of claim 106, wherein: the edge of the upper wall of the shaft is provided with a wall notch for the inner clamping part to pass through.

108. The winding shaft of claim 105, wherein: the upper shaft portion includes a driven portion corresponding to the driving portion for driving.

109. The winding shaft of claim 108, wherein: the driven part is a driven tooth corresponding to the driving tooth.

110. The winding shaft of claim 109, wherein: the driven teeth include a plurality of individual teeth that evenly encircle the axis of the winding shaft.

111. The winding shaft of claim 110, wherein: the single tooth is provided with a driven surface facing the rope loosening direction and a driven reverse surface facing the rope tightening direction; the driven back surface is an inclined surface which gradually inclines from top to bottom towards the object direction of the tightening rope.

112. The winding shaft of claim 111, wherein: the driven surface extends along the axial direction of the winding shaft from top to bottom, or is an inclined surface gradually inclined towards the object direction of the tightening rope from top to bottom.

113. The winding shaft of claim 109, wherein: the upper shaft part comprises an upper shaft outer wall which is positioned on the outer ring of the driven teeth and corresponds to the clamping jaw.

114. The winding shaft of claim 109, wherein: the upper shaft part comprises an upper shaft inner wall which is positioned on the inner ring of the driven tooth and corresponds to the buttonposts.

115. The winding shaft of claim 105, wherein: the shaft body is formed with a shaft hole into which the knob post extends.

116. The winding shaft of claim 115, wherein: the shaft hole vertically penetrates the shaft body along the axis of the shaft body.

117. The winding shaft of claim 115, wherein: the upper part or the lower part of the shaft hole is a circular hole which is matched with the circumferential surface of the button column and is radially limited.

118. The winding shaft of claim 116, wherein: the device also comprises an elastic clamping part which is arranged at the shaft hole and matched with the button post.

119. The winding shaft of claim 118, wherein: the elastic clamping part comprises an elastic clamping arm arranged on the hole wall of the shaft hole and an arm clamping block arranged at the free end of the elastic clamping arm and matched with the clamping ring.

120. The winding shaft of claim 119, wherein: the arm clamping block protrudes into the shaft hole area.

121. The winding shaft of claim 119, wherein: the edge of the arm clamping block is provided with a smooth inclined surface which is used for the clamping ring to slide forward.

122. The winding shaft of claim 119, wherein: the arm clamping block is provided with an arm anti-falling clamping surface which faces downwards and is clamped by the ring anti-falling clamping surface.

123. The winding shaft of claim 122, wherein: the arm anti-falling clamping surface is a plane perpendicular to the axis of the button column or gradually inclines downwards from the outer ring to the inner ring.

124. The winding shaft of claim 122, wherein: the elastic clamping arm is provided with an arm root connected with the hole wall of the shaft hole and an arm free end for bearing an arm clamping block; the elastic clamping arm gradually extends downwards from the arm root to the arm free end.

125. The winding shaft of claim 124, wherein: the cross section area of the elastic clamping arm gradually increases from bottom to top.

126. The winding shaft of claim 124, wherein: the elastic clamping arm is provided with an arm inner side face facing into the shaft hole, an arm outer side face facing in the opposite direction and two arm side faces positioned between the arm inner side face and the arm outer side face.

127. The winding shaft of claim 126, wherein: the distance between the inner side surface of the arm and the outer side surface of the arm gradually increases from bottom to top.

128. The winding shaft of claim 126, wherein: the distance between the two side surfaces of the two arms gradually increases from bottom to top.

129. The winding shaft of claim 126, wherein: the inner side surface of the arm and the inner wall of the shaft hole are on the same cylindrical surface or gradually incline towards the axis of the shaft hole from top to bottom.

130. The winding shaft of claim 126, wherein: the outer side surface of the arm is parallel to the axis of the shaft hole or gradually inclines from top to bottom towards the axis of the shaft hole.

131. The winding shaft of claim 119, wherein: the cross section of the elastic clamping arm is circular arc-shaped surrounding the axis of the shaft hole.

132. The winding shaft of claim 124, wherein: at least one of the lower end surface of the elastic clamping arm and the anti-falling clamping surface of the arm is provided with a poking part for poking.

133. The winding shaft of claim 132, wherein: the poking part is a convex block or a groove.

134. The winding shaft of claim 133, wherein: the poking part is a bar-shaped lug which is positioned between the two arm side surfaces and extends towards the two arm side surfaces.

135. The winding shaft of claim 119, wherein: the shaft body is formed with a surrounding slit surrounding the elastic clip arm.

136. The winding shaft of claim 135, wherein: the circumferential gap is equally wide or gradually widened from top to bottom.

137. The winding shaft of claim 135, wherein: the surrounding gap comprises a back gap corresponding to the outer side surface of the arm and side gaps corresponding to the side surfaces of the two arms.

138. The winding shaft of claim 137, wherein: the width of the back clearance at least at the lower end is larger than the fastening depth of the upper clamping ring and the arm clamping block.

139. The winding shaft of claim 137, wherein: the width of the back clearance at least at the lower end is larger than the fastening depth of the lower clamping ring and the arm clamping block.

140. The winding shaft of claim 137, wherein: the outer side surface of at least one of the back slit and the side slit gradually inclines outwards from top to bottom.

141. The winding shaft of any one of claims 119 to 140, wherein: the more than two elastic clamping parts are arranged around the axis of the shaft hole.

142. The winding shaft of claim 141, wherein: the two or three elastic clamping parts are uniformly arranged around the axis of the shaft hole.

143. The winding shaft of claim 141, wherein: the distance between the end parts of the arm clamping blocks of each elastic clamping part is smaller than the outer diameter of the lower clamping ring.

144. The winding shaft of claim 143, wherein: the distance between the end parts of the arm clamping blocks of each elastic clamping part is smaller than the outer diameter of the upper clamping ring.

145. The winding shaft of claim 143, wherein: the end part of the arm clamping block is in a circular arc shape matched with at least one of the upper neck part and the lower neck part.

146. The winding shaft of any one of claims 118 to 140, wherein: the elastic clamping part and the shaft main body are integrally injection molded.

147. A rope turnbuckle made based on the bottom cover of any one of claims 1-68 or the knob of any one of claims 69-104 or the winding shaft of any one of claims 105-146, characterized in that: comprises a bottom cover, a knob and a winding shaft which are matched and installed together.

148. The cord clasp of claim 147, wherein: the bottom cover comprises a claw, and the claw is provided with claw teeth; the knob is provided with driving teeth and button teeth matched with the claw teeth; the winding shaft is provided with driven teeth for driving the driving teeth; the size of the overlapped area when the claw teeth are matched with the button teeth in the up-down direction is smaller than the distance for pulling out the knob when the rope object is loosened; the size of the overlapped area when the driving teeth are matched with the driven teeth in the up-down direction is smaller than the distance for pulling out the knob when the rope object is loosened.

149. The cord clasp of claim 147, wherein: the bottom cover comprises a claw, and the claw is provided with claw teeth; the knob is provided with driving teeth and button teeth matched with the claw teeth; the button tooth is provided with a clamping tooth surface matched and clamped with the tooth clamping surface of the claw tooth and a gear-following surface matched with the gear-following surface of the claw tooth in a following way.

150. The cord clasp of claim 149, wherein: the tooth-following surface gradually inclines towards the direction of loosening the rope object from the root to the tip of the button tooth.

151. The cord clasp of claim 149, wherein: the plane of the clamping tooth surface gradually inclines towards the object screwing direction of the screwing rope through the axis of the winding shaft or from the tooth root to the tooth tip.

152. A shoe incorporating a cord turnbuckle as claimed in any one of claims 147 to 151, wherein: comprising a shoe main body and a rope turnbuckle assembled on the shoe main body.