CN115590285A

CN115590285A - Rope belt tightening device

Info

Publication number: CN115590285A
Application number: CN202211178093.8A
Authority: CN
Inventors: 李付德
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-09-27
Filing date: 2022-09-27
Publication date: 2023-01-13

Abstract

The invention relates to a rope belt take-up device, which comprises a supporting structure, a reel, a knob, a clutch element and a driving element, wherein the reel is limited in a working space of the supporting structure and can rotate; the knob is assembled on the supporting structure and rotates unidirectionally around the Z axis of the space rectangular coordinate system in a limited way; the clutch element is positioned in the knob and rotates along with the knob, and second end face teeth on the clutch element are meshed with first end face teeth of the reel; the driving element is positioned on the knob and used for driving the clutch element to move so as to enable the second end face teeth and the first end face teeth to establish an engaged state or a separated state; the drive element has an operation portion exposed from the knob. By introducing the clutch element and the driving element, the tightness of the rope belt is adjusted without pulling up the knob, the clutch force is effectively reduced, and the rope is light and convenient to use and suitable for various people; the rope belt can be used for products such as shoes, clothes, medical protective equipment, helmets, bags and the like, and the tightness of the rope belt needs to be adjusted.

Description

Rope belt tightening device

Technical Field

The invention relates to the technical field of rope belt tightening devices, in particular to a rope belt tightening device for adjusting the tightness of a rope belt on products such as shoes, clothes, medical protectors and the like.

Background

In life or work, the lace on products such as shoes, clothes, medical protective equipment needs the elasticity regulation to obtain comfortable wearing effect and satisfy and take off the demand.

For example, the rope tightening device of chinese patent No. 201720741362.5, the lacing device of chinese patent No. 201820684579.1 and the control component thereof adjust the tightness of the rope by the corresponding devices, but these devices need to pull up or press down the knob component when in use, and especially need a large force when pulling up, the reason for this is that the clutch teeth are constructed on the knob component, and the knob component is connected with the shaft seat (or the pawl wheel bin), the contact surface is large, and the knob component is not well grasped in the pulling up direction, so the use experience is not good, and even the user groups such as children and the like cannot pull up the device.

Disclosure of Invention

The invention aims to overcome the defects of the prior art, and provides a rope belt tightening device which is light and convenient to use and suitable for various people.

In order to achieve the purpose, the invention adopts the following technical scheme:

a lace tensioner having:

a support structure providing a workspace;

a reel that is confined in a working space of the support structure and is rotatable about a Z-axis, which is a spatial rectangular coordinate system, the reel having first end face teeth that are exposed from the working space;

the knob is assembled on the supporting structure and rotates unidirectionally around the Z axis of the space rectangular coordinate system in a limited way;

the clutch element is positioned in the knob and rotates along with the knob, and can also move along a Z axis of a space rectangular coordinate system relative to the knob, and second end face teeth are arranged on the clutch element and are used for being meshed with first end face teeth of the reel;

the driving element is positioned on the knob and used for driving the clutch element to move along the Z axis of the space rectangular coordinate system so as to enable the second end face teeth and the first end face teeth to be in an engaged state or a separated state; the drive element has an operating portion exposed from the knob.

The driving element further comprises a screw rod, the screw rod is connected with the rotary table, and the screw rod extends along the Z axis of the space rectangular coordinate system and forms a screw rod nut system with the clutch element in a threaded connection mode; the clutch element is provided with a through internal threaded hole, and the second end face teeth are distributed on the periphery of one end head of the internal threaded hole; the positive and negative rotation of the turntable drives the screw rod to drive the clutch element to move along the Z axis of the space rectangular coordinate system, so that the meshing state or the separation state of the clutch element is established.

The supporting structure comprises a base and an upper frame which are mutually combined and enclose a working space, and the knob is covered on the periphery of the upper frame; the end part of the upper frame facing the knob is provided with a window hole and ratchets distributed on the periphery of the window hole, first end face teeth on the reel are exposed through the window hole, and the ratchets are matched with a pawl preset on the knob to establish a one-way rotation state of the knob.

The scheme is further that an inward concave assembly groove is formed in the end face of the knob, an avoidance through hole is formed in the middle of the assembly groove, the rotary disc is embedded in the assembly groove, and one end of the screw rod is connected with the rotary disc through the avoidance through hole; and a rotation limiting structure for guiding the turntable to rotate is arranged between the assembling groove and the turntable.

The rotary limiting structure comprises a ring platform surrounding an avoiding through hole and protruding towards the direction of the rotary table, a clamping edge floating from the periphery of the ring platform, stopping parts distributed on the periphery of the ring platform, positioning protrusions distributed on the inner bottom surface of the assembling groove, and barbs and positioning grooves arranged on the lower side surface of the rotary table, wherein at least two barbs are hung on the clamping edge, so that the rotary table is in a retreating-preventing connection state and a rotating state around the ring platform, and the stopping parts limit the positive and negative rotating angles of the rotary table; the rotary positioning is given to the rotary table by the clamping of the positioning projections and the positioning grooves.

In the scheme, a downward skirt edge is arranged at the edge of the lower side surface of the rotary table, the positioning grooves are formed in the skirt edge and are in a wave concave arc shape, two positioning grooves are formed, and a reduction part is arranged on the skirt edge between the two positioning grooves; the positioning protrusions are rib-shaped.

The scheme is further that the outer side surface of the turntable is provided with a poking tooth.

The scheme is further that elastic holes are formed in the positions, corresponding to the positioning grooves, of the skirt edges.

The technical scheme is that the rotary knob is connected with the upper frame in a buckling mode, the three pawls are integrated on a pawl ring, the pawl ring is connected with the rotary knob in a combined mode, a multi-side hole is formed in the inner center of the pawl ring, the multi-side hole is sleeved with the clutch element, the clutch element is provided with a multi-side shaft which is matched and sleeved with the multi-side hole, and the multi-side hole is matched with the multi-side shaft to drive the clutch element to rotate along the rotary knob and guide the clutch element to move along the Z axis of the space rectangular coordinate system relative to the rotary knob.

The screw rod is connected with the rotary disc through screws, a concave hole is formed in the inner side face of the rotary disc, the connecting end of the screw rod connected with the rotary disc is inserted into the concave hole of the rotary disc and then is locked with the screws, a cutting surface extending along the Z axis of the space rectangular coordinate system is formed in the connecting end of the screw rod, and the concave hole is provided with a cutting edge matched with the cutting surface.

The screw rod is connected with the rotary table through the face cover, concave holes are formed in the inner side face of the rotary table, and concave guide grooves are formed in the outer side face of the rotary table and communicated with the concave holes; the face lid has the couple, and the connection end of lead screw connection carousel inserts the shrinkage pool of carousel and wears out this shrinkage pool, and is equipped with along the tangent plane of cutting and the platform of hanging of space rectangular coordinate system Z axle extension on the connection end of this lead screw, and the shrinkage pool has the matching and cuts the side of cutting of tangent plane, hangs the platform and covers the couple lock joint on with the face, and the couple restriction is in the guide way.

The invention introduces the clutch element and the driving element which can respectively move relative to the knob, thereby effectively reducing the clutch force without pulling up the knob when the tightness of the rope is adjusted, and the invention is light and convenient to use and is suitable for various people. The rope belt is simple in structure, small in size and capable of being used on products such as shoes, clothes, medical protectors, helmets, bags and the like, and the tightness of the rope belt needs to be adjusted, so that comfortable wearing and using effects can be achieved.

Description of the drawings:

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is an exploded view of the embodiment of FIG. 1;

FIG. 3 is a schematic view of the embodiment of FIG. 2 from another perspective;

FIG. 4 is a schematic diagram of a partial structural assembly of the embodiment of FIG. 1;

FIG. 5 is a schematic structural diagram of two embodiments of the present invention;

FIG. 6 is a partially exploded view of the embodiment of FIG. 5;

FIG. 7 is a schematic view of the connection structure of the face cover and the lead screw of the embodiment of FIG. 5;

fig. 8 is a schematic view of the structure of the turntable of the embodiment of fig. 5.

The specific implementation mode is as follows:

the conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, the features and the effects of the present invention.

It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated.

Referring to 1~8, which is a schematic view of a preferred embodiment of the present invention, the present invention relates to a rope tightening device, which comprises a support structure 1, a reel 2, a knob 3, a clutch element 4, and a driving element 5, wherein the components are orderly combined for convenient manufacture and assembly; in the present embodiment, it is preferable that the support structure 1, the reel 2, the knob 3, the clutch element 4, and the driving element 5 be plastic members, so that the manufacturing cost can be reduced and the practical applicability can be improved. The supporting structure 1 provides a working space, and the supporting structure 1 is provided with a thread hole communicated with the working space so as to meet the working requirement of winding and unwinding the rope belt. The reel 2 is constrained in the working space of the support structure 1 and is rotatable about a spatial orthogonal coordinate system Z-axis, the reel 2 having first end face teeth 21 exposed from the working space. The during operation is fixed the corresponding end of fag end on reel 2, receive and releases the fag end through the rotation of reel 2, and the reel 2 of this embodiment designs for "worker" font, has and receives the line annular, satisfies the fag end rolling. The knob 3 is assembled on the supporting structure 1 and rotates unidirectionally around the Z axis of the space rectangular coordinate system in a limited way; in the figure, the knob 3 is in the shape of a runner with a hollow middle part, the supporting structure 1 comprises a base 11 and an upper frame 12 which are mutually combined and enclose a working space, and the knob 3 covers the periphery of the upper frame 12; the end part of the upper frame 12 facing the knob is provided with a window hole 121 and ratchets 122 distributed on the periphery of the window hole, the first end face teeth 21 on the reel 2 are exposed through the window hole 121, and the ratchets 122 are matched with a pawl 31 preset on the knob 3 to establish the one-way rotation state of the knob. Further, the knob 3 and the upper frame 12 are connected in a snap-fit manner, and are snap-fitted by using structures such as a clamping jaw and a clamping table, and the assembly form is an existing structure and is not described herein again. The three pawls 31 are integrated on the pawl ring 38, the pawl ring 38 is connected with the knob 3 in a combined manner, and can be connected by threads, screws or buckles, so that the manufacturing and the assembly are convenient. Clutch element 4 fix a position in knob 3 and follow knob 3 and rotate, and clutch element 4 still can follow the motion of space rectangular coordinate system Z axle relative knob 3, is equipped with second terminal surface tooth 41 on the clutch element 4, this second terminal surface tooth 41 is used for meshing with the first terminal surface tooth 21 of reel 2 to realize that knob 3 rotates, drive reel 2 through second terminal surface tooth 41 and the meshing of first terminal surface tooth 21 and rotate, reach the rolling fag end, adjust the tightness of fag end. In this embodiment, the inner center of the pawl ring 38 is provided with a polygonal hole 381, the polygonal hole 381 is sleeved with the clutch element 4, the clutch element 4 is provided with a polygonal shaft 43 which is matched and sleeved with the polygonal hole 381, the rotary connecting surface is increased, and the stability and the reliability of rope belt adjustment are improved. Through the cooperation of multilateral hole 381 and multifaceted shaft 43, not only can drive clutch element 4 and follow the knob rotation, but also can guide clutch element 4 relative knob 3 to move along the Z axis of the rectangular coordinate system in space, and compact structure, reasonable. The driving element 5 is positioned on the knob 3 and is used for driving the clutch element 4 to move along a Z-axis of a space rectangular coordinate system, so that an engagement state or a separation state is established between the second end face teeth 41 and the first end face teeth 21; the driving element 5 is provided with an operating part exposed from the knob 3, and when the spinning reel is in work, the connection state between the clutch element 4 and the spinning reel 2 can be achieved only by operating the driving element 5 without pulling or pressing the knob 3, so that the clutch force can be effectively reduced, the spinning reel is lighter and more convenient to use, and the spinning reel is suitable for various crowds.

As shown in fig. 1, 2, 3 and 4, in the present embodiment, the operation portion is a rotary disc 51 disposed on an end surface of the knob 3, the driving element 5 further includes a lead screw 52, the lead screw 52 is connected with the rotary disc 51, and the lead screw 52 extends along the Z axis of the rectangular spatial coordinate system and forms a lead screw nut system with the clutch element 4 by means of a threaded connection; a through internal threaded hole 42 is formed in the clutch element 4, and the second end face teeth 41 are distributed on the periphery of one end head of the internal threaded hole 42; the screw rod 52 is driven by the forward and reverse rotation of the turntable 51 to drive the clutch element 4 to move along the Z axis of the space rectangular coordinate system, so that the engaging state or the disengaging state of the clutch element 4 is established. Therefore, the rope belt tightness can be adjusted by the operating device with small force, the rotating disc 51 is rotated, the acting force is different from the clutch direction of the clutch element 4, and the screw rod 52 is in threaded contact with the internal threaded hole 42, so that the clutch action of the clutch element 4 can be achieved with small component force, and the use is more convenient.

As shown in fig. 1, 2, 3, and 4, in this embodiment, an inward concave assembly groove 32 is provided on an end surface of the knob 3, an avoidance through hole 33 is provided in an inner middle portion of the assembly groove 32, a rotary plate 51 is embedded in the assembly groove 32, and one end of a screw rod 52 is connected to the rotary plate 51 through the avoidance through hole 33. In this embodiment, the screw rod 52 is connected with the rotary disc 51 through a screw 53, so as to facilitate disassembly and assembly; at this time, a concave hole 515 is arranged on the inner side surface of the rotary disc 51, the connection end of the screw rod 52 connected with the rotary disc 51 is inserted into the concave hole 515 of the rotary disc 51 and then locked with the screw 53, a cutting surface 521 extending along the Z axis of the space rectangular coordinate system is arranged on the connection end of the screw rod 52, and the concave hole 515 is provided with a cutting edge matched with the cutting surface 521, so that the connection structure of the screw rod 52 and the rotary disc 51 is further improved, the rotation operation is facilitated, and the service life is prolonged. In this embodiment, a surface cover 54 is further added to the upper side of the turntable 51, and is used for covering the screw 53, giving protection, and also improving the integrity and the beauty of the device, and of course, the surface cover 54 may also be made into corresponding patterns, signs and the like according to needs, so as to increase functionality. Further, still be equipped with on the lateral surface of carousel 51 and dial tooth 514, it is the surface course structure to dial tooth 514, promotes handheld nature, reaches antiskid, promotes the operability, and comfortable, feels good, is fit for various crowds.

In this embodiment, a rotation limiting structure for guiding the rotation of the turntable 51 is further disposed between the assembly slot 32 and the turntable 51, and is used for assisting the operation of the turntable 51. Specifically, the rotation limiting structure comprises a ring table 34 surrounding a clearance through hole 33 and protruding towards the direction of the rotary table, a clamping edge 35 floating from the periphery of the ring table, stopping parts 36 distributed on the periphery of the ring table, positioning protrusions 37 distributed on the inner bottom surface of the assembly groove, barbs 511 and positioning grooves 512 arranged on the lower side surface of the rotary table 51, at least two barbs 511 are hung on the clamping edge 35, so that the rotary table 51 is in a back-proof connection and a rotating state around the ring table 34, and the stopping parts 36 limit the positive and negative rotation angles of the rotary table 51; the rotary positioning of the turntable is given by the positioning projection 37 being engaged with the positioning slot 512. Furthermore, a downward skirt 513 is arranged at the edge of the lower side surface of the rotary disc 51, the positioning grooves 512 are formed in the skirt 513 and are in a wave concave arc shape, and two positioning grooves 512 are formed to meet the positioning of positive and negative rotation; in the embodiment, a reducing part 5131 is arranged on the skirt 513 between the two positioning grooves, so that interference with the positioning protrusions 37 during rotation is prevented, and the rotation lightness of the turntable is improved; in this embodiment, the positioning protrusion 37 is rib-shaped, has a simple structure, and can be clamped and positioned with the positioning groove 512; in this embodiment, the skirt 513 is provided with an elastic hole 5132 at a position corresponding to the positioning groove, so as to increase the elasticity of the positioning groove 512, thereby improving the connection performance and the service life of the positioning groove 512 and the positioning protrusion 37.

Fig. 5, 6, 7, and 8 are schematic structural views illustrating another connection manner between the screw 52 and the turntable 51 according to another embodiment of the present invention, in which the screw 52 and the turntable 51 are connected together through a surface cover 54, a concave hole 515 is provided on an inner side surface of the turntable 51, and a concave guide groove 516 is provided on an outer side surface of the turntable 51, and the guide groove 516 is communicated with the concave hole 515; the cover 54 is positioned on the turntable 51 and has hooks 541, in the form of a double hook, for example, and the two hooks 541 are spaced apart from each other, so that the number and positions of the guide grooves 516 are matched to the hooks 541. The connection end of the screw rod 52 connected with the turntable 51 is inserted into the concave hole 515 of the turntable 51 and penetrates out of the concave hole 515, the connection end of the screw rod 52 is provided with a cutting surface 521 and a hanging table 522 which extend along the Z axis of a space rectangular coordinate system, the hanging table 522 is provided with two and is respectively arranged at two sides of the cutting surface 521, the concave hole 515 is provided with a cutting edge matched with the cutting surface 521, the connection structure of the screw rod 52 and the turntable 51 is improved, the rotation operation and the service life are prolonged, and meanwhile, the assembling limit is realized. The hanging table 522 is fastened with the hook 541 on the surface cover 54, the hook 541 is limited in the guide groove 516, and the guide groove 516 guides the hook 541 to be inserted and assembled and provides a limit, so that the assembly stability is increased. In this embodiment, the inside of the guiding groove 516 is further provided with a packing protrusion 5161, and the packing protrusion 5161 acts on the hook 541 through propping up, so that the hook 541 is fastened on the hanging table 522 more tightly and stably, and the assembly connectivity is improved.

When the rope belt tightening device is assembled, the corresponding ends of the rope belt are fixed on the winding wheel 2, the corresponding parts are combined and connected to form the rope belt tightening device, and the base 11 of the supporting structure 1 can be designed into a corresponding shape according to requirements so as to meet different environmental requirements. When the rope is wound, the rotary disc 51 is rotated, the screw rod 52 rotates along with the rotation, the clutch element 4 moves along the Z axis of the space rectangular coordinate system and is close to the reel 2, the second end face teeth 41 on the clutch element 4 are meshed with the first end face teeth 21 of the reel 2, the knob 3 is further rotated, the second end face teeth 41 are meshed with the first end face teeth 21 to drive the reel 2 to rotate, the rope belt is wound, and the tightness of the rope belt is adjusted. On the contrary, when the rope is required to be loosened, the rotating disc 51 is rotated reversely, the screw rod 52 rotates along with the rotating disc, the clutch element 4 moves along the Z axis of the space rectangular coordinate system and is far away from the reel 2, the second end face teeth 41 on the clutch element 4 are separated from the first end face teeth 21 of the reel 2, at the moment, the reel 2 is in an idle running state, the rope is pulled by hands, the rope can be prevented from being threaded, and the rope can be loosened.

According to the invention, the clutch element and the driving element are introduced, and can move relative to the knob respectively, and the clutch element can be driven to move in a clutch way through the lead screw only by externally rotating the turntable on the driving element, so that the tightness of the rope belt can be adjusted, the knob does not need to be pulled up, the clutch force is effectively reduced, and the rope belt is light and convenient to use and suitable for various people. The rope belt is simple in structure, small in size and capable of being used on products such as shoes, clothes, medical protectors, helmets, bags and the like, and the tightness of the rope belt needs to be adjusted, so that comfortable wearing and using effects can be achieved.

The present invention has been described in detail with reference to the embodiments, but only for the purpose of illustrating the technical concept and features of the present invention, it is intended that the present invention be understood and embodied by those skilled in the art, and therefore, all equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. A rope belt tensioner, comprising:

a support structure (1), the support structure (1) providing a working space;

a reel (2), the reel (2) being constrained in the working space of the support structure (1) and being rotatable about a Z-axis, which is a rectangular spatial coordinate system, the reel (2) having first end face teeth (21) emerging from the working space;

the knob (3) is assembled on the supporting structure (1) and rotates unidirectionally around the Z axis of the space rectangular coordinate system in a limited way;

the clutch element (4) is positioned in the knob (3) and rotates along with the knob (3), the clutch element (4) can also move along a Z-axis of a space rectangular coordinate system relative to the knob (3), and second end face teeth (41) are arranged on the clutch element (4), and the second end face teeth (41) are used for being meshed with first end face teeth (21) of the reel (2);

the driving element (5) is positioned on the knob (3) and used for driving the clutch element (4) to move along a Z-axis of a space rectangular coordinate system, so that an engagement state or a separation state is established between the second end face teeth (41) and the first end face teeth (21); the drive element (5) has an operating portion exposed from the knob (3).

2. The lace tensioner according to claim 1, characterized in that the operating part is a rotary disc (51) arranged on the end face of the knob (3), the driving element (5) further comprises a lead screw (52), the lead screw (52) is connected with the rotary disc (51), and the lead screw (52) extends along the Z axis of the rectangular spatial coordinate system and forms a lead screw nut system with the clutch element (4) in a threaded manner; the clutch element (4) is provided with a through internal threaded hole (42), and the second end face teeth (41) are distributed on the periphery of one end head of the internal threaded hole (42); the positive and negative rotation of the turntable (51) drives the screw rod (52) to drive the clutch element (4) to move along the Z axis of the space rectangular coordinate system, so that the meshing state or the separation state of the clutch element (4) is established.

3. The lace tensioner according to claim 1, characterized in that the supporting structure (1) comprises a base (11) and an upper frame (12) which are mutually combined and enclose a construction work space, the knob (3) being covered on the periphery of the upper frame (12); the end part of the upper frame (12) facing the knob is provided with a window hole (121) and ratchets (122) distributed on the periphery of the window hole, first end face teeth (21) on the reel (2) are exposed through the window hole (121), and the ratchets (122) are matched with a pawl (31) preset on the knob (3) to establish a one-way rotation state of the knob.

4. The rope belt tightening device according to claim 2, wherein the end face of the knob (3) is provided with an inward-concave assembly groove (32), an avoidance through hole (33) is formed in the inner middle of the assembly groove (32), the turntable (51) is embedded in the assembly groove (32), and one end of the screw rod (52) is connected with the turntable (51) through the avoidance through hole (33); a rotation limiting structure for guiding the rotation of the turntable (51) is further arranged between the assembling groove (32) and the turntable (51).

5. The rope belt tensioner as claimed in claim 4, wherein the rotation limiting structure comprises a ring (34) surrounding the through hole (33) and protruding toward the turntable, a clamping edge (35) protruding from the periphery of the ring, a stopping part (36) distributed on the periphery of the ring, a positioning protrusion (37) distributed on the inner bottom surface of the assembly groove, an barb (511) and a positioning groove (512) arranged on the lower side surface of the turntable (51), at least two barbs (511) are hung on the clamping edge (35) to enable the turntable (51) to obtain the anti-back connection and the rotation state around the ring (34), and the stopping part (36) limits the forward and reverse rotation angles of the turntable (51); the rotary positioning is given to the rotary table by the clamping connection of the positioning bulge (37) and the positioning groove (512).

6. The lace tensioner as claimed in claim 5, characterized in that the lower side edge of the turntable (51) is provided with a downward skirt (513), the positioning grooves (512) are formed on the skirt (513) and are in the shape of a wave concave arc, two positioning grooves (512) are provided, and the skirt (513) between the two positioning grooves is provided with the reducing part (5131); the positioning projections (37) are rib-shaped.

7. The lace tensioner as claimed in claim 6, wherein the skirt (513) is provided with a resilient hole (5132) at a location corresponding to the positioning groove.

8. The rope belt take-up device as claimed in claim 3, wherein the knob (3) is connected with the upper frame (12) in a snap-fit manner, three pawls (31) are integrated on a pawl ring (38), the pawl ring (38) is connected with the knob (3) in a combined manner, a multi-side hole (381) is formed in the inner center of the pawl ring (38), the multi-side hole (381) is sleeved with the clutch element (4), the clutch element (4) is provided with a multi-side shaft (43) which is matched and sleeved with the multi-side hole (381), and the multi-side hole (381) and the multi-side shaft (43) are matched to drive the clutch element (4) to rotate along the knob and guide the clutch element (4) to move along the Z axis of a space rectangular coordinate system relative to the knob (3).

9. The rope belt tightening device according to claim 2, characterized in that the lead screw (52) is connected with the turntable (51) through a screw (53), a concave hole (515) is formed in the inner side surface of the turntable (51), the connection end of the lead screw (52) connected with the turntable (51) is inserted into the concave hole (515) of the turntable (51) and then locked with the screw (53), a cutting surface (521) extending along the Z axis of the space rectangular coordinate system is formed in the connection end of the lead screw (52), and the concave hole (515) is provided with a cutting edge matched with the cutting surface (521).

10. The rope belt tightening and loosening device according to claim 2, wherein the screw rod (52) is connected with the rotary disc (51) through a face cover (54), a concave hole (515) is formed in the inner side face of the rotary disc (51), and a concave guide groove (516) is formed in the outer side face of the rotary disc (51), and the guide groove (516) is communicated with the concave hole (515); the face cover (54) is provided with a hook (541), the connecting end of the screw rod (52) connected with the rotary disc (51) is inserted into the concave hole (515) of the rotary disc (51) and penetrates out of the concave hole (515), the connecting end of the screw rod (52) is provided with a cutting face (521) and a hanging table (522) which extend along the Z axis of a space rectangular coordinate system, the concave hole (515) is provided with a cutting edge matched with the cutting face (521), the hanging table (522) is buckled with the hook (541) on the face cover (54), and the hook (541) is limited in the guide groove (516).