CN115137126A - Knob formula fag end take-up unit - Google Patents

Abstract

The invention provides a knob type rope belt tightening device which comprises a base, a middle frame, a winding wheel, a first ratchet, a winding wheel control tooth and a rotary cover, wherein the middle frame is relatively fixed with the base, the winding wheel is rotatably arranged on the base, the first ratchet is matched with the middle frame, the winding wheel control tooth is movably connected with the first ratchet, the rope belt is wound on the winding wheel, the middle frame is provided with a first ratchet wheel disc, the first ratchet is meshed with the first ratchet wheel disc so that the first ratchet can only rotate in a single direction, the winding wheel is provided with a second ratchet wheel disc, the winding wheel control tooth can be meshed with or separated from the second ratchet wheel disc, the bottom surface of the rotary cover is provided with a connecting disc for controlling the winding wheel control tooth to be meshed with or separated from the second ratchet wheel disc, the connecting disc is provided with a connecting groove, the winding wheel control tooth is provided with a connecting column, and the connecting column is movably arranged in the connecting groove. According to the invention, the switching can be completed only by rotating the rotary cover by a small angle, so that the experience of loosening and tightening of a user is improved, and the clamping stagnation phenomenon can be obviously improved.

Description

Knob formula fag end take-up unit

Technical Field

The invention relates to the technical field of rope belt fixing, in particular to a knob type rope belt tightening and loosening device.

Background

Currently, it is common to fasten shoes, helmets, shoulder pads, etc. by means of a string. When the rope is required to be fastened, both ends of the rope are tied and fastened by means of two-hand operation, a certain time is required, and the position of the rope is inconvenient for the helmet, the shoulder protector and the like to be operated by two hands.

Aiming at the problem, an improved lace adjusting device exists in the prior art, such as a patent with the publication number of CN216674912U, and provides a lace tightness adjusting device, which comprises a base, a chassis, a take-up pulley, a ratchet disc arranged at the top of the chassis, a driving part arranged in the middle of the ratchet disc and a buckle cover buckled with the top of the chassis, when the tightness adjusting device needs to be tightened, the buckle cover 7 is rotated clockwise, a buckle block 83 slides to a limit position from the other side of a buckle groove 504 to one side, the ratchet disc 5 can be driven to rotate clockwise in a ratchet 203 of the chassis 2, meanwhile, a spiral column 82 is screwed in the clockwise rotation process of the buckle cover 7 through a spiral hole 603 to drive the driving disc 601 to move downwards to be meshed with the take-up pulley 3, a first driving tooth 602 at the bottom end face of the driving disc 601 is meshed with a second driving tooth of the take-up pulley 3, and the ratchet disc 5 drives the take-up pulley 3 to rotate when the buckle cover rotates, and the external thread of the take-up pulley 3 is tightened; when the external thread needs to be loosened, the buckle cover 7 is rotated reversely, because the pawl 502 at the outer side of the ratchet plate 5 is meshed with the ratchet teeth 203 of the chassis 2, the ratchet plate 5 is not driven to rotate in the reverse rotation process of the buckle cover 7, the buckle cover 7 rotates reversely, after the buckle block 83 in the rotating disc 81 rotates to the limit position at the other side, the bottom of the rotating disc 81 drives the driving disc 601 to ascend through the spiral column 82, the driving disc 601 ascends in the ratchet hole 503 in the ratchet plate 5 and is separated from the second driving tooth of the take-up pulley 3, at the moment, the take-up pulley 3 can rotate freely in the chassis 2, the two ends of the external thread close to the head and the tail of the tightness adjusting device are pulled outwards, the external thread can be loosened, the tightness of the lace can be adjusted through rotating the buckle cover, labor is not wasted during use, and the operation at the rear part of the helmet, the shoulder protection position and the like can be more conveniently carried out.

In the above patent, the driving disc 601 is driven to ascend and descend by the spiral column 82, on one hand, the structure is relatively complex, the tooth surface of the driving disc 601 is matched with the second driving tooth of the take-up pulley 3 in an ascending and descending manner, and phenomena such as clamping stagnation may occur. In addition, when the driving disc 601 is driven to ascend or descend by the spiral column 82, the spiral column 82 usually needs to rotate by a larger angle, and particularly when the rope needs to be loosened, still has room for further improvement.

Disclosure of Invention

The purpose of the invention is: aiming at the defects existing in the background technology, the rope belt tightness adjusting needle is more convenient to use.

In order to achieve the above purpose, the present invention provides a knob type rope tightening device, which comprises a base, a middle frame fixed relative to the base, a reel rotationally connected to the base, a first ratchet rotationally connected to the middle frame, a reel control tooth movably connected to the first ratchet, and a rotary cover, wherein a rope is wound on the reel, the middle frame is provided with a first ratchet wheel disc, the first ratchet is engaged with the first ratchet wheel disc so that the first ratchet can only rotate in one direction, the reel is provided with a second ratchet wheel disc, the reel control tooth can be engaged with or separated from the second ratchet wheel disc, the bottom surface of the rotary cover is provided with a connecting disc for controlling the reel control tooth to be engaged with or separated from the second ratchet wheel disc, the connecting disc is provided with a connecting groove, the reel control tooth is provided with a connecting column, and the connecting column is movably arranged in the connecting groove.

Furthermore, a movable groove is formed in the first ratchet, the reel control teeth are movably arranged in the movable groove, the first end of the reel control teeth is rotatably connected with the first ratchet, the second end of the reel control teeth is a tooth surface and corresponds to the second ratchet wheel, and the reel control teeth are switched to be meshed with or separated from the second ratchet wheel when rotating in the movable groove.

Further, the spread groove includes first limit point and first cambered surface, works as when the connection pad clockwise turning, the spliced pole is followed first cambered surface removes extremely behind the first limit point, the second end of reel control tooth rotate to with the meshing of second ratchet dish is following the in-process of connection pad synchronous revolution drives second ratchet dish clockwise turning, works as when the connection pad counter-clockwise turning, the spliced pole is followed first cambered surface slides, makes the second end of reel control tooth with the separation of second ratchet dish.

Further, the second end of the reel control teeth is disengaged from the second ratchet plate when the connection plate rotates 45 degrees counterclockwise.

Furthermore, a limit bump is further formed at a position, close to the first limit point, of the connecting groove, and the limit bump is used for enabling the screw cap to have resistance when rotating anticlockwise.

Furthermore, a transmission bump is further formed on the first ratchet tooth, a first contact surface corresponding to the transmission bump is arranged on the connecting disc, the connecting disc rotates clockwise until the first contact surface abuts against the transmission bump to drive the first ratchet tooth to rotate synchronously, a second contact surface corresponding to the transmission bump is further arranged on the connecting disc, and the connecting disc rotates anticlockwise until the second contact surface abuts against the transmission bump to limit the connecting disc.

Further, the reel includes reel upper strata and reel lower floor, the second ratchet dish is located the reel upper strata, the fag end connect in the reel lower floor.

Furthermore, the middle frame is further provided with a wire guide groove, and two ends of the rope belt enter from the corresponding wire guide grooves respectively and are fixed with the reel.

Furthermore, a plurality of threading holes are formed in the lower layer of the reel and used for fixing the end portions of the rope belts.

An arc-shaped clamping strip is further formed on the inner wall of the spiral cover and matched with a clamping groove formed in the outer wall of the middle frame.

The scheme of the invention has the following beneficial effects:

according to the knob type rope tightening device provided by the invention, through the matching arrangement of the first ratchet, the reel control teeth and the connecting disc, the reels can synchronously rotate clockwise to complete the rope winding when the connecting disc rotates clockwise, the rope is tightened, the second ratchet disc and the reels are in free rotation states when the connecting disc rotates anticlockwise, the rope can be stretched and loosened, the rotation of the rotary cover by a small angle can be completed during switching, the tightening loosening experience of a user is improved, and the clamping stagnation phenomenon can be obviously improved;

according to the invention, by means of the arrangement of the limiting bump, the spiral cover needs to apply obvious force when rotating and starting anticlockwise, and rotates and releases after overcoming the limiting effect of the limiting bump, so that the phenomenon that the spiral cover rotates anticlockwise due to mistaken touch of the spiral cover, looseness in the use process and the like is avoided, the rope belt is released abnormally, and the reliability of the device is further improved;

other advantages of the present invention will be described in detail in the detailed description that follows.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an exploded view of the overall structure of the present invention;

FIG. 3 is a schematic view of a first ratchet configuration of the present invention;

FIG. 4 is a schematic diagram of a connecting disc structure according to the present invention;

fig. 5 isbase:Sub>A sectional view taken atbase:Sub>A-base:Sub>A of fig. 1.

[ instruction of reference ]

1-a base; 2-middle frame; 3-a reel; 4-a first ratchet; 5-reel control teeth; 6, screwing a cover; 7-a first ratchet plate; 8-a second ratchet plate; 9-a connecting disc; 10-connecting grooves; 11-a connecting column; 12-a movable groove; 13-a rotating shaft; 14-a first limit point; 15-a first arc surface; 16-a limit bump; 17-anti-slip teeth; 18-a wire guide groove; 19-threading holes; 20-clamping strips; 21-a first fastening block; 22-a second clasp block; 23-a drive lug; 24-a first contact surface; 25-a second contact surface; 26-annular convex strips; 27-annular groove.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. The various features and embodiments described in the detailed description may be combined in any suitable manner, for example, different embodiments may be formed by combining different specific features/embodiments, and in order to avoid unnecessary repetition, various possible combinations of the specific features/embodiments in the present invention are not described separately.

It should be noted that the terms "disposed" and "connected" should be interpreted broadly, and may be, for example, directly disposed, installed and connected, or indirectly disposed and connected through intervening components and intervening structures. In addition, the directions or positional relationships indicated by "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like in the present invention are based on the directions or positional relationships shown in the drawings or the conventional placing states or using states, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the structures, features, devices or elements referred to must have a specific direction, be configured and operated in a specific direction, and thus, cannot be construed as limiting the present invention.

As shown in fig. 1 and 2, the embodiment of the invention provides a knob type rope belt tightener, which comprises a base 1, a middle frame 2 fixed relative to the base 1, a reel 3 rotationally connected with the base 1, a first ratchet 4 rotationally connected with the middle frame 2, reel control teeth 5 movably connected with the first ratchet 4, and a rotary cover 6 rotatably covered on the middle frame 2, wherein the rope belt is wound on the reel 3. Wherein, center 2 adopts the tube-shape form, can dismantle with base 1 and be connected, consequently can conveniently unpack whole device apart, maintains change etc. to inner structure. The middle frame 2 is provided with a first ratchet wheel disc 7, the tooth surface of the first ratchet wheel disc 7 is in the form of an inner ring, the whole first ratchet 4 is also in a disc-shaped structure, and the tooth surface of the first ratchet 4 is meshed with the first ratchet wheel disc 7, so that the first ratchet 4 can only rotate in one direction. In the present embodiment, the first ratchet 4 is described as being rotatable only clockwise.

The reel 3 is provided with a second ratchet plate 8, and the reel control teeth 5 can be engaged with or disengaged from the second ratchet plate 8, so that the second ratchet plate 8, i.e., the clockwise one-way rotation state or the two-way rotation state of the reel 3, is switched by the reel control teeth 5. The reel 3 is used for tightening the string when the device can only rotate clockwise, the device is pulled outwards when the device rotates in both directions, and the reel 3 rotates anticlockwise to pay off the string under the tension of the string, so that the string can be automatically stretched and loosened.

The second ratchet plate 9 is provided with a tooth angle of not plus 90 degrees, preferably 80 degrees, i.e., inclined by 10 degrees, so that the transmission between the reel control teeth 5 and the second ratchet plate 8 is more stable and is less prone to drop.

Meanwhile, as shown in fig. 3 and 4, in order to control the engagement state of the reel control teeth 5 by the rotation of the spinning cap 6, the bottom surface of the spinning cap 6 in this embodiment is provided with a connecting disc 9 for controlling the engagement or disengagement of the reel control teeth 5 with or from the second ratchet disc 8, and the connecting disc 9 is rotated synchronously when the spinning cap 6 is driven to rotate relative to the center frame 2. Wherein, seted up spread groove 10 on the connection pad 9, reel control tooth 5 is provided with spliced pole 11, and spliced pole 11 activity sets up in spread groove 10, and spliced pole 11 slides for spread groove 10 at the rotatory in-process of spread groove 10 to let spliced pole 11 and reel control tooth 5 change for second ratchet dish 8 position, switch with the meshing or the detached state of second ratchet dish 8.

It should be noted that the connection disc 9 can be integrally formed with the screw cap 6, and the connection post 11 and the reel control teeth 5 can be integrally formed, so that the overall structure is more compact, and the parts are more convenient to mount and dismount.

In the embodiment, the first ratchet 4 is provided with a movable groove 12, the reel control teeth 5 are movably arranged in the movable groove 12, and the first end of the reel control teeth is rotatably connected with the first ratchet 4. In particular, the upper surface of the disc-shaped structure of the first ratchet 4 has a rotation shaft 13, which, like the first ratchet 4, can be made in an integral manner. The first end of the reel control teeth 5 is provided with an opening and is sleeved on the rotating shaft 13 to form a rotating connection.

The second end of the reel control teeth 5 is a tooth surface and corresponds to the second ratchet plate 8, and the reel control teeth 5 can be switched to be engaged with or disengaged from the second ratchet plate 8 when rotating in the movable groove 12.

Meanwhile, as shown in fig. 5, the connecting groove 10 includes a first limit point 14 and a first arc surface 15, wherein the first limit point 14 is located at the end of the connecting groove 10, when the connecting disc 9 rotates clockwise, the connecting column 11 slides to the first limit point 14 along the first arc surface 15 relative to the connecting groove 10, the second end of the reel control teeth 5 rotates to be meshed with the second ratchet wheel disc 8, at this time, the connecting column 11 is limited by the end of the connecting groove 10 and rotates synchronously with the connecting disc 9, due to the unidirectional rotation relationship of the second ratchet wheel disc 8, the reel control teeth 5 can also drive the second ratchet wheel disc 8 to rotate clockwise, so that the reel 3 rotates clockwise to complete winding up, and the rope belt is tightened. When the connection disc 9 rotates anticlockwise, the connection column 11 slides reversely along the first cambered surface 15, and contrary to the process, the second end of the reel control teeth 5 is separated from the second ratchet wheel disc 8, so that the second ratchet wheel disc 8 and the reel 3 are in a free rotation state, when the device is pulled outwards, the reel 3 can rotate anticlockwise to pay off under the action of the tension of the rope, and the rope is stretched and loosened.

Adopt the fag end take-up unit that this embodiment provided, the mode that controls 8 lifts of second ratchet wheel dish among the prior art is obviously different, only needs to let the rotatory less angle of spiral cover 6 can accomplish when switching reel control tooth 5 and 8 engagement state of second ratchet wheel dish, has further promoted user's experience, and can obviously improve the jamming phenomenon.

In a preferred embodiment, the second end of the reel control teeth 5 can be disengaged from the second ratchet plate 8 when the attachment plate 9, i.e., the spinning cap 6, is rotated 45 degrees counterclockwise, as is the case with the particular arrangement of the first arcuate surface 15.

As a preferred embodiment, to further improve the stability of the rotation control, the reel control teeth 5 are provided in three sets in the present embodiment, and the rotating shaft 13, the connecting post 11, etc. on the first ratchet 4 are correspondingly provided in three sets, and the connecting slot 10, etc. on the connecting plate 9 are correspondingly provided in three sets, so that the force is more uniform and the device is more reliable than that in one set.

In order to avoid the false touch of the screw cap 6, the loosening during use, and the like, which result in the counterclockwise rotation of the screw cap 6, and allow the rope to be loosened abnormally, as a further improvement, a limiting protrusion 16 is further formed at a position of the connecting groove 10 close to the first limit point 14 in the present embodiment, and the limiting protrusion 16 is used for providing resistance when the screw cap 6 rotates counterclockwise.

It should be noted that the limiting protruding block 16 may be located on the first arc surface 15 of the connecting groove 10, or may be located on an arc surface opposite to the first arc surface 15, where no specific limitation is imposed, and depending on the setting of the limiting protruding block 16, the screw cap 6 needs to apply an obvious force when rotating and starting counterclockwise, and then rotates and releases after overcoming the limiting effect of the limiting protruding block 16.

In this embodiment, a transmission bump 23 is further formed on the first ratchet 4, a first contact surface 24 corresponding to the transmission bump 23 is provided on the connecting disc 9, the connecting disc 9 rotates clockwise until the first contact surface 24 collides with the transmission bump 23 to drive the first ratchet 4 to rotate synchronously, a second contact surface 25 corresponding to the transmission bump 23 is further provided on the connecting disc 9, and after the connecting disc 9 rotates counterclockwise until the second contact surface 25 collides with the next transmission bump 23, the connecting disc 9 can be limited by the first ratchet 4 because the first ratchet 4 is limited by the first ratchet disc 7 and cannot rotate counterclockwise. In actual design, the distance between the first contact surface 24 and the second contact surface 25 is controlled, so that the screw cap 6 can not rotate any more when rotating 45 degrees counterclockwise.

As a preferred embodiment, in the present embodiment, the anti-slip teeth 17 are formed on the outer surface of the screw cap 6, so that the user can rotate the screw cap 6 by holding the screw cap with a hand, and the situation that the user cannot release the string by overcoming the acting force of the limiting protrusion 16 when the user slips with the hand is avoided.

In the embodiment, the annular convex strip 26 is further formed on the lower edge of the first ratchet teeth 4, the annular convex strip 26 corresponds to the annular groove 27 on the inner side of the middle frame 2, and the annular convex strip 26 is made of a material capable of increasing friction force, so that the friction force is increased when the first ratchet teeth 4 rotate clockwise, the hand feeling is improved, and the engagement transmission of the reel control teeth 5 and the second ratchet wheel 8 is ensured.

In this embodiment, the reel 3 is of a layered structure, including an upper layer and a lower layer, the second ratchet plate 8 is located on the upper layer, and the rope is connected to the lower layer, so that the winding and unwinding processes of the reel 3 are not disturbed by the second ratchet plate 8.

In this embodiment, the middle frame 2 is further opened with a wire guiding groove 18, and both ends of the string enter from the corresponding wire guiding grooves 18 and are fixed to the reel 3. Two wire grooves 18 have a preset angle, are suitable for application scenes such as shoelaces, helmets, shoulder protectors and the like, and cannot cause difficulty in control due to too large angle or cause rope end winding due to too small angle.

In this embodiment, the lower deck of the reel 3 is provided with a plurality of threading holes 19 for fixing the ends of the string. In a preferred embodiment, two rows of threading holes 19 are formed in the lower layer of the reel 3 in parallel, each row of threading holes 19 is composed of two threading holes 19 arranged in the direction perpendicular to the axis of the reel 3, one end of the string firstly passes through one threading hole 19 in one row of threading holes 19, then reaches the opening on the back of the other threading hole 19, and then passes through the other threading hole 19 in the reverse direction, and the end of the string is fixed with the reel 3 repeatedly. The other end of the rope belt is fixed with the other row of the thread holes 19 in the same way.

In this embodiment, an arc-shaped clamping strip 20 is further formed on the inner wall of the screw cap 6, and the clamping strip 20 is matched with a clamping groove formed in the upper portion of the outer wall of the middle frame, so that the screw cap 6 and the clamping strip 20 form a more stable rotating connection. In addition, the lower part of the outer wall of the middle frame 2 is also provided with a first buckling block 21, and the inner wall of the base 1 is provided with a second buckling block 22 matched with the first buckling block 21, so that the base 1 and the middle frame 2 are further buckled and fixed.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (10)

1. The utility model provides a knob formula fag end take-up unit, including fixed base (1) that sets up, with base (1) relatively fixed center (2), rotation set up reel (3) on base (1), with center (2) matched with first ratchet (4), with first ratchet (4) swing joint's reel control tooth (5) and spiral cover (6), the fag end is in on reel (3), its characterized in that, first ratchet (7) have been laid in center (2), first ratchet (4) with first ratchet (7) meshing, so that first ratchet (4) only can the unidirectional rotation, reel (3) have been laid second ratchet (8), reel control tooth (5) can with second ratchet (8) meshing or the separation, the bottom surface of spiral cover (6) is provided with the control reel control tooth (5) with connection pad (9) of second ratchet (8) meshing or the separation, connection pad (9) have seted up on reel control tooth (5) connection pad (10), the activity is provided with in reel (11) connection pad (10), the spliced pole (10) control is set up in the activity.

2. The knob type rope tightening device according to claim 1, wherein the first ratchet (4) is provided with a movable groove (12), the reel control teeth (5) are movably arranged in the movable groove (12) and are rotatably connected with the first ratchet (4) at first ends, the second ends of the reel control teeth (5) are tooth surfaces and correspond to the second ratchet plate (8), and the reel control teeth (5) are switched to be engaged with or disengaged from the second ratchet plate (8) when rotating in the movable groove (12).

3. A knob type lace tensioner according to claim 2, characterized in that said connecting groove (10) comprises a first limit point (14) and a first arc surface (15), when said connecting disc (9) rotates clockwise, said connecting post (11) moves along said first arc surface (15) to said first limit point (14) and then the second end of said reel control teeth (5) rotates to engage with said second ratchet disc (8) and drives said second ratchet disc (8) to rotate clockwise in the process of synchronous rotation with said connecting disc (9), when said connecting disc (9) rotates counterclockwise, said connecting post (11) slides along said first arc surface (15) to separate the second end of said reel control teeth (5) from said second ratchet disc (8).

4. A knob type cord tensioner according to claim 3, characterized in that said second end of said reel control teeth (5) is disengaged from said second ratchet disc (8) when said connection disc (9) is rotated 45 ° counterclockwise.

5. A knob type lace tensioner according to claim 1, characterized in that said connecting groove (10) is further formed with a limit projection (16) at a position close to said first limit point (14), said limit projection (16) being used to provide resistance to the counterclockwise rotation of said cap (6).

6. The knob type rope belt tightening device according to claim 1, wherein a transmission protrusion (23) is further formed on the first ratchet tooth (4), the connection disc (9) has a first contact surface (24) corresponding to the transmission protrusion (23), the connection disc (9) rotates clockwise until the first contact surface (24) abuts against the transmission protrusion (23) to drive the first ratchet tooth (4) to rotate synchronously, the connection disc (9) also has a second contact surface (25) corresponding to the transmission protrusion (23), and the connection disc (9) rotates counterclockwise until the second contact surface (25) abuts against the transmission protrusion (23) to limit the connection disc (9).

7. A knob type cord tensioner according to claim 1, characterized in that said reel (3) comprises a reel upper deck and a reel lower deck, said second ratchet disc (8) being located on said reel upper deck, said cord being attached to said reel lower deck.

8. A knob type cord tensioner according to claim 7, characterized in that said middle frame (2) is further provided with a cord guide groove (18), and both ends of said cord are respectively inserted from said corresponding cord guide grooves (8) and fixed to said reel (3).

9. A knob type lace tensioner according to claim 8, characterized in that said reel (3) has a lower layer provided with a plurality of threading holes (19) for fixing the ends of said lace.

10. A knob type lace tensioner according to claim 1, characterized in that an arc-shaped clip strip (20) is further formed on the inner wall of the rotary cover (6), the clip strip (20) is matched with a clip groove formed on the outer wall of the middle frame (2), a first buckle block (21) is further formed on the lower portion of the outer wall of the middle frame (2), and a second buckle block (22) matched with the first buckle block (21) is formed on the inner wall of the base (1).

Images