Rope belt adjusting device

Abstract

The invention provides a rope belt adjusting device, relates to the field of daily supplies, and solves the problems that the rope belt adjusting device is low in structural strength, easy to break and short in service life. In the device, a wire wheel is located in a seat body, and when a rotating claw is in transmission connection with the wire wheel, the rotating claw can drive the wire wheel to rotate clockwise or anticlockwise in one direction relative to the seat body; the rotating claw comprises a limiting connecting plate, an annular boss is arranged on the periphery of the base body, the limiting connecting plate covers the annular boss, a clamping state exists between the limiting connecting plate and the annular boss, and when the limiting connecting plate and the annular boss are in the clamping state, the rotating claw can drive the wire wheel to rotate clockwise or anticlockwise in one direction relative to the base body; the limiting connecting plate is arranged in a deformable mode under the action of external force, and the clamping state between the limiting connecting plate and the annular boss can be relieved. And the rotating claw is connected with the seat body, and stress points of the rotating claw and the seat body are distributed on the annular boss, so that the drawing force can be dispersed, breakage between the rotating claw and the seat body is prevented, the structural strength is improved, and the service life is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of daily necessities, and particularly to a cord adjusting device Background Art

[0002] Traditional cords (such as shoelaces, helmet straps, shoulder guard straps, etc.) mostly rely on manual knotting to adjust the tightness, which has the disadvantages of cumbersome operation and long time consumption. Especially in scenarios where one hand or limited space operation is required, such as helmets and shoulder guards, it is extremely inconvenient to tie knots with both hands.

[0003] A cord adjusting device in the prior art includes: a driving member, a winding member, and a mounting seat; when in use, the driving member moves towards one end close to the winding member to connect the driving member with the winding member. At this time, the elastic part on the winding member is clamped with the circular ring clamping position on the driving member, and the driving member is arranged in the mounting seat. The mounting seat restricts the rotation direction of the driving member, so that the driving member can only drive the winding member to rotate clockwise or counterclockwise, thereby driving the fixing part arranged on the winding member to drive the binding belt to wind around the winding member, and gradually reducing the length of the binding belt outside the device, and further tightening the tightness of the binding belt. However, in the prior art, the elastic part includes two semi-circular columns, and the two semi-circular columns pass through the central hole of the rotating claw of the driving member, and the clamping and fixing with the rotating claw on the driving member is realized by a certain degree of elastic deformation of the two semi-circular columns.

[0004] The applicant of the present invention has found that the prior art has at least the following technical problems: in the above prior art, the stress point between the driving member and the winding member is the middle elastic part. After long-term use of the columns of the elastic part, specifically, when loosening the cord, it is necessary to pull out the driving member to release the transmission between the driving member and the winding member, and there is a risk of fracture. After fracture, the cord adjusting device cannot be used. Therefore, the cord adjusting device in the prior art has low structural strength, is easy to break, and has a short service life. Summary of the Invention

[0005] The purpose of the present invention is to provide a cord adjusting device and a cord fixing assembly to solve the technical problems in the prior art that the cord adjusting device for adjusting the tightness of the cord has low structural strength, is easy to break, and has a short service life. The many technical effects that can be produced by the preferred technical solutions provided by the present invention are described in detail below.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] The present invention provides a cord adjusting device, including a rotating claw, a seat body, and a wire wheel for winding the cord, wherein:

[0008] The wire wheel is located inside the base body, and when the rotary claw is in transmission connection with the wire wheel, the rotary claw can drive the wire wheel to rotate unidirectionally clockwise or counterclockwise relative to the base body;

[0009] The rotary claw includes a limiting connecting plate, an annular boss is provided on the outer periphery of the base body, the limiting connecting plate cover is provided outside the annular boss, and there is a clamping state between the limiting connecting plate and the annular boss. When in the clamping state, the rotary claw can drive the wire wheel to rotate unidirectionally clockwise or counterclockwise relative to the base body;

[0010] The limit connecting plate is deformable under the action of external force, and the limit connecting plate can release the clamping state with the annular boss, so that when the external force pulls the rotary claw, the rotary claw and the wire wheel are in a disengaged state.

[0011] Preferably, the limiting connecting plate is provided with a flange, the flange protruding from the inner wall of the limiting connecting plate, and the flange is coaxially arranged with the rotary claw and the seat body;

[0012] When the limiting connecting plate and the annular boss are in the clamping state, the flange is clamped with the annular boss.

[0013] Preferably, one or more flanges are provided on the same limiting connecting plate. When more than two flanges are provided on the same limiting connecting plate, the flanges are spaced apart around the axis of the rotary claw.

[0014] Preferably, the limiting connecting plate is an arc-shaped plate, the number of the limiting connecting plates is more than two, and all the limiting connecting plates are arranged at intervals around the axis of the rotary claw.

[0015] Preferably, the rope adjustment device further includes an upper cover, the rotary claw is fixedly connected inside the upper cover, and there is a gap between the limiting connecting plate and the inner peripheral wall of the upper cover to allow the limiting connecting plate to deform.

[0016] Preferably, the upper cover is fixedly provided with buckles, and the buckles are arranged at intervals around the axis of the upper cover;

[0017] A clearance gap is formed between adjacent limiting connecting plates, and the buckle passes through the corresponding clearance gap;

[0018] When the limiting connecting plate and the annular boss are released from the clamping state, and the rotary claw and the wire wheel are in a disengaged state, the buckle is clamped with the annular boss, thereby preventing the upper cover from falling off the base body.

[0019] Preferably, one of the rotary claw and the line wheel is provided with a one-way convex tooth, and the other is provided with a one-way tooth groove, and the one-way convex tooth and the one-way tooth groove are arranged at intervals around the common axis of the rotary claw and the line wheel;

[0020] When the limiting connecting plate and the annular boss are in a clamping state, the one-way convex tooth extends into the one-way tooth groove for engagement, and the rotary claw can drive the wire wheel to rotate clockwise or counterclockwise relative to the seat body;

[0021] When the limiting connecting plate is released from the clamping state with the annular boss, the one-way protruding tooth is disengaged from the one-way tooth groove.

[0022] Preferably, the rotary claw comprises an elastic arm pawl, and the elastic arm pawl is located on the periphery of the one-way convex tooth or the one-way tooth groove;

[0023] The seat body is provided with inner bevel teeth, and the elastic arm pawl is engaged with the inner bevel teeth;

[0024] The inclination direction of the inner bevel teeth is opposite to the inclination direction of the one-way tooth groove, and the matching structure between the elastic arm pawl and the inner bevel teeth only allows the rotary pawl to rotate in one direction.

[0025] Preferably, the rotary claw is provided with a clearance mounting hole, the clearance mounting holes are arranged at intervals around the axis of the rotary claw, and the elastic arm pawl is deformably arranged in the clearance mounting hole.

[0026] Preferably, the seat comprises a body and a base, wherein:

[0027] The base is fixed on the part to be fixed, the fuselage is fixedly connected to the base, a through-hole is provided on the fuselage, a belt groove is provided on the wire wheel, and a fixing column for fixing the rope is provided in the belt groove; the fixed end of the rope is fixed on the fixing column, and the rope can pass through the through-hole and be wrapped around the belt groove.

[0028] The rope adjustment device provided by the present invention has the following beneficial effects compared with the prior art: when the claw and the reel are in transmission, the claw is rotated, and the claw can drive the reel to rotate unidirectionally clockwise or counterclockwise relative to the base body, thereby winding the rope around the reel and tightening the rope; in this process, the limiting connecting plate and the annular boss are in a clamping state, the claw is connected to the base body, and the force points of the two are distributed on the annular boss, that is, distributed in the circumference of the reel, which can disperse the pulling force and prevent the claw, reel and base body from breaking, thereby improving the structural strength of the rope adjustment device and extending its service life. In addition, the limiting connecting plate can be deformed under the action of external force, and the limiting connecting plate can ensure the normal pulling of the claw by deformation, and the claw and reel can be in a disengaged state to allow the rope to be relaxed. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0030] Figure 1 is a front view of the rope adjustment device;

[0031] Figure 2 It is a schematic diagram of the exploded structure of the rope adjustment device;

[0032] Figure 3 yes Figure 1 Cross-sectional view at the middle BB;

[0033] Figure 4 yes Figure 1 Cross-sectional view at CC;

[0034] Figure 5 It is a schematic diagram of the assembly structure of the upper cover and the rotary claw;

[0035] Figure 6 It is a structural diagram of the upper cover;

[0036] Figure 7 It is a structural diagram of the rotary claw;

[0037] Figure 8 It is a structural diagram of the reel;

[0038] Fig. 9 It is a schematic diagram of the structure of the fuselage;

[0039] Fig.10 It is a structural diagram of the base;

[0040] Figure 11 This is a schematic diagram of the exploded structure of the upper cover, rotary claw, wire wheel and fuselage;

[0041] Fig.12 This is a structural diagram before the upper cover and the rotary claw are assembled in place;

[0042] In the figure, 1. rotary claw; 11. limiting connecting plate; 12. flange; 13. clearance spacing; 14. one-way convex tooth; 15. elastic arm pawl; 16. clearance mounting hole; 2. wire wheel; 21. one-way tooth groove; 22. belt groove; 23. fixing column; 3. fuselage; 31. annular boss; 32. inner bevel tooth; 33. through hole; 4. base; 5. upper cover; 51. buckle; 52. block; 53. positioning column. DETAILED DESCRIPTION

[0043] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. Obviously, the described embodiments are only a part rather than all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0044] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "length", "width", "height", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "side", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0045] An embodiment of the present invention provides a cord adjustment device, which can disperse the pulling force, prevent breakage between the rotating claw, the wire wheel and the seat body, improve the structural strength of the cord adjustment device, and extend its service life.

[0046] The following Figures 1-12 elaborates on the technical solutions provided by the present invention in more detail.

[0047] Embodiment 1:

[0048] Referring to Figures 1-12 as shown, the cord adjustment device provided by the present invention includes a rotating claw 1, a seat body, and a wire wheel 2 for winding a cord. Among them: the wire wheel 2 is located inside the seat body. When the rotating claw 1 is in transmission connection with the wire wheel 2, the rotating claw 1 can drive the wire wheel 2 to rotate unidirectionally clockwise or counterclockwise relative to the seat body; the rotating claw 1 includes a limit connecting plate 11. An annular boss 31 is provided on the outer periphery of the seat body. The limit connecting plate 11 covers the outside of the annular boss 31, and there is a clamped state between the limit connecting plate 11 and the annular boss 31. When in the clamped state, the rotating claw 1 can drive the wire wheel 2 to rotate unidirectionally clockwise or counterclockwise relative to the seat body; the limit connecting plate 11 is deformably arranged under an external force, and the limit connecting plate 11 can be disengaged from the clamped state with the annular boss 31, so that when the rotating claw 1 is pulled by an external force, the rotating claw 1 and the wire wheel 2 are in a separated state. At this time, the wire wheel 2 can release the cord.

[0049] In the rope adjustment device of this embodiment, when the claw 1 and the reel 2 are in transmission, the claw 1 is rotated, and the claw 1 can drive the reel 2 to rotate unidirectionally clockwise or counterclockwise relative to the base body, thereby winding the rope around the reel 2 and tightening the rope. During this process, the limiting connecting plate 11 and the annular boss 31 are in a clamping state, the claw 1 is connected to the base body, and the force points of the two are distributed on the annular boss 31, that is, distributed in the circumference of the reel 2, which can disperse the pulling force and prevent the claw 1, the reel 2 and the base body from breaking, thereby improving the structural strength of the rope adjustment device and extending its service life. In addition, the limiting connecting plate 11 can be deformed under the action of external force. The limiting connecting plate 11 can ensure the normal pulling of the claw 1 by deformation, and the claw 1 and the reel 2 can be in a disengaged state for the rope to be relaxed.

[0050] When the user fixes the strap with the strap, the above-mentioned strap adjustment device can avoid the tying operation, and only one hand is needed to rotate the operating claw 1 to tighten the strap. When the claw 1 is pulled away from the seat body, the claw 1 and the wire wheel 2 are disengaged. At this time, the claw 1 and the wire wheel 2 no longer transmit power, and the strap is pulled and the wire wheel 2 rotates in the opposite direction to relax the strap. This is simple to operate and saves time, and is especially convenient for beginners or users who are not convenient to use both hands.

[0051] As an alternative embodiment, see Figure 3 、 Figure 5 and Figure 11 As shown, a flange 12 is provided on the limiting connecting plate 11, and the flange 12 protrudes from the inner wall of the limiting connecting plate 11. The flange 12 is coaxial with the rotary claw 1 and the seat body. When the limiting connecting plate 11 and the annular boss 31 are in a clamping state, the flange 12 is clamped with the annular boss 31.

[0052] The flange 12 and the limiting connecting plate 11 are an integrally formed structure. The limiting connecting plate 11 is covered outside the annular boss 31, and when the flange 12 and the side of the annular boss 31 facing the seat body are abutted against each other, the flange 12 and the annular boss 31 can be clamped together. At this time, the transmission connection between the claw 1 and the reel 2 can be ensured. By rotating the claw 1, the claw 1 drives the reel 2 to rotate in one direction, thereby winding the rope.

[0053] The flange 12 is engaged with the annular boss 31 and is not fixed. When the claw 1 rotates, the flange 12 can slide along the surface of the annular boss 31. The mating structure of the flange 12 and the annular boss 31 limits the axial displacement between the claw 1 and the base, allowing the claw 1 to rotate unidirectionally relative to the base around the base's axis.

[0054] As an alternative embodiment, see Figure 5 and Figure 11As shown, one or more than two flanges 12 are provided on the same limiting connecting plate 11. When more than two flanges 12 are provided on the same limiting connecting plate 11, the flanges 12 are arranged at intervals around the axis of the rotating claw 1.

[0055] In this embodiment, three flanges 12 are arranged at intervals on one limiting connecting plate 11, ensuring the stability of the clamping structure. When the rotating claw 1 is pulled, the pulling force can be dispersed, improving the structural strength. And it is convenient for the limiting connecting plate 11 to deform.

[0056] As an alternative embodiment, see Figure 5 and Figure 11 As shown, the limiting connecting plate 11 is an arc-shaped plate, and the number of limiting connecting plates 11 is more than two. All the limiting connecting plates 11 are arranged at intervals around the axis of the rotating claw 1.

[0057] The structure in which multiple limiting connecting plates 11 are arranged at intervals around the axis of the rotating claw 1 can form a clearance 13 between the limiting connecting plates 11. When the rotating claw 1 is pulled in the direction away from the seat body, the limiting connecting plate 11 can expand outward under the action of the annular boss 31 and deform, so that the flange 12 is disengaged from the limit of the annular boss 31, thereby realizing the disconnection of the transmission between the rotating claw 1 and the wire wheel 2. When an external force pulls the rope belt, it can ensure that the wire wheel 2 rotates reversely, thereby releasing the rope belt.

[0058] The above structure is convenient for the limiting connecting plate 11 to expand and deform when the rotating claw 1 is pulled, so as to realize the disconnection of the clamping between the flange 12 and the annular boss 31 and ensure the separation of the rotating claw 1 and the wire wheel 2.

[0059] As an alternative embodiment, see Figure 1 and Figure 3 As shown, the rope belt adjusting device further includes an upper cover 5. The rotating claw 1 is fixedly connected inside the upper cover 5, and there is a gap between the limiting connecting plate 11 and the inner peripheral wall of the upper cover 5 that allows the limiting connecting plate 11 to deform.

[0060] The upper cover 5 is fixedly connected to the rotating claw 1. The upper cover 5 is located outside the rotating claw 1. The upper cover 5 is the direct object of the external force. The surface of the upper cover 5 is provided with uneven anti-slip patterns, which is convenient for increasing the friction with the hand.

[0061] See Figure 5 and Figure 7 As shown, the inside of the upper cover 5 is provided with a positioning post 53 and a clamping block 52, so as to realize the pre-positioning and clamping fixation between the upper cover 5 and the rotating claw 1. When an external force rotates the upper cover 5, the rotating claw 1 rotates synchronously with the upper cover 5.

[0062] In this embodiment, the upper cover 5, the rotating claw 1, the wire wheel 2 and the seat body (the seat body includes the fuselage 3 and the base 4) are all arranged coaxially.

[0063] When the rope needs to be released, that is, to loosen the rope, the upper cover 5 and the claw 1 need to be pulled away from the seat body, and the limiting connecting plate 11 expands and deforms, thereby releasing the engagement between the flange 12 and the annular boss 31, ensuring that the claw 1 is disengaged from the reel 2.

[0064] In order to prevent the upper cover 5 and the claw 1 from falling off the base, see Figure 4 、 Figure 5 and Figure 11 As shown, the upper cover 5 is fixed with buckles 51, and the buckles 51 are arranged at intervals around the axis of the upper cover 5; Figure 5-Figure 7 As shown, a clearance gap 13 is formed between adjacent limiting connecting plates 11, and the buckle 51 passes through the corresponding clearance gap 13; when the limiting connecting plate 11 and the annular boss 31 are released from the clamping state, and the rotary claw 1 and the wire wheel 2 are in a disengaged state, the buckle 51 is clamped with the annular boss 31, thereby preventing the upper cover 5 from falling off from the base body.

[0065] See also Figure 4 As shown, Figure 4 The state shown in the figure is the state in which the flange 12 is engaged with the annular boss 31. At this time, the claw 1 is connected to the reel 2 in transmission. When the rope needs to be released, that is, the rope needs to be relaxed, the upper cover 5 is pulled in the direction of the arrow in the figure (upward direction). At this time, the limiting connecting plate 11 is deformed, and the flange 12 moves up and disengages from the annular boss 31 until the buckle 51 abuts against the annular boss 31. At this time, the claw 1 and the reel 2 are in contact with each other in transmission connection. When the rope is pulled, the reel 2 rotates in the opposite direction, the rope is relaxed, and the buckle 51 cooperates with the annular boss 31 to prevent the upper cover 5 and the claw 1 from falling off the base.

[0066] When the rope needs to be tightened again, the upper cover 5 is pressed down, the claw 1 is engaged with the pulley 2 again, and the flange 12 is lowered to the position where it is engaged with the annular boss 31, so that the claw 1 can drive the pulley 2 to rotate again.

[0067] This embodiment provides a transmission structure of a rotary claw 1 and a wire wheel 2:

[0068] Combine Figure 7 and Figure 8As shown, among the rotating claw 1 and the wire wheel 2, one of them is provided with one-way convex teeth 14, and the other is provided with one-way tooth grooves 21. In this embodiment, the rotating claw 1 is provided with one-way convex teeth 14, and the wire wheel 2 is provided with one-way tooth grooves 21. Of course, one-way convex teeth 14 can also be provided on the wire wheel 2, and one-way tooth grooves 21 can be provided on the rotating claw 1. The one-way convex teeth 14 and the one-way tooth grooves 21 are arranged at intervals around the common axis of the rotating claw 1 and the wire wheel 2; when the limiting connecting plate 11 and the annular boss 31 are in a clamped state, the one-way convex teeth 14 extend into the one-way tooth grooves 21 and engage, and the rotating claw 1 can drive the wire wheel 2 to rotate unidirectionally clockwise or counterclockwise relative to the seat body; when the limiting connecting plate 11 can be disengaged from the annular boss 31, the one-way convex teeth 14 are disengaged from the one-way tooth grooves 21.

[0069] See Figure 7 and Figure 8 、 Figure 1 and 11 As shown, when the one-way convex teeth 14 and the one-way tooth grooves 21 are engaged, the rotating claw 1 can drive the wire wheel 2 to rotate unidirectionally to fix the rope.

[0070] Specifically, see Figure 1 and Figure 2 、 Figure 11 As shown, the seat body includes a fuselage 3 and a base 4, where: the base 4 is fixed to the piece to be fixed, the fuselage 3 is fixedly connected to the base 4, the fuselage 3 is provided with a through hole 33, the wire wheel 2 is provided with a groove 22, and a fixing column 23 for fixing the rope is arranged in the groove 22; the fixed end of the rope is fixed to the fixing column 23, and the rope can pass through the through hole 33 and be wound around the groove 22.

[0071] The above structure can realize the fixing, winding or releasing of the rope.

[0072] In this embodiment, the above annular boss 31 is located on the outer periphery of the fuselage 3 and is arranged around the axis of the fuselage 3.

[0073] In order to ensure that the rotating claw 1 can only rotate in a single clockwise or counterclockwise direction, as an optional implementation manner, see Figure 2 As shown, the rotating claw 1 includes a spring arm pawl 15, and the spring arm pawl 15 is located outside the one-way convex teeth 14 or the one-way tooth grooves 21; see Figure 2 and Fig. 9 As shown, the fuselage 3 is provided with internal helical teeth 32, and the internal helical teeth 32 are arranged in a circle around the axis of the fuselage 3. The spring arm pawl 15 meshes with the internal helical teeth 32; the inclination direction of the internal helical teeth 32 is opposite to the inclination direction of the one-way tooth grooves 21, and the matching structure of the spring arm pawl 15 and the internal helical teeth 32 only allows the rotating claw 1 to rotate unidirectionally.

[0074] Since the inclination direction of the internal helical gear 32 is opposite to that of the one-way tooth groove 21, after the elastic arm pawl 15 meshes with the internal helical gear 32, it is restricted by the internal helical gear 32, and the rotating claw 1 can only rotate in the direction that can drive the wire wheel 2 to rotate. The elastic arm pawl 15 can only rotate in one direction along the axis of the fuselage 3, so that the rotating claw 1 and the upper cover 5 can only rotate in one direction.

[0075] As an alternative embodiment, refer to Figure 2 As shown, a relief mounting hole 16 is provided on the rotating claw 1. The relief mounting holes 16 are arranged at intervals around the axis of the rotating claw 1, and the elastic arm pawl 15 is deformably arranged in the relief mounting hole 16.

[0076] The above structure can ensure that the elastic arm pawl 15 deforms to a certain extent, ensuring that the upper cover 5 can be pulled out under an external force, facilitating the relaxation operation of the cord.

[0077] When the cord adjusting device of this embodiment is in use: Refer to Figure 3 and Figure 4 As shown, when the rotating claw 1 drives the wire wheel 2, rotating the rotating claw 1 can drive the wire wheel 2 to rotate relative to the seat body in one-way clockwise or counterclockwise directions, thereby winding the cord around the wire wheel 2 to achieve cord tightening; during this process, the limit connecting plate 11 and the annular boss 31 are in a clamped state. The rotating claw 1 is connected to the seat body, and the force application points of both are distributed on the annular boss 31, that is, circumferentially on the wire wheel 2, which can disperse the pulling force and prevent breakage between the rotating claw 1, the wire wheel 2 and the seat body. When it is necessary to loosen the cord, refer to Figure 4 As shown, pull the upper cover 5 along the arrow direction (upward direction) in the figure. At this time, the limit connecting plate 11 deforms, the flange 12 moves upward and disengages from the annular boss 31 until the buckle 51 abuts against the annular boss 31. At this time, the rotating claw 1 and the wire wheel 2 are in contact and driving connection. Pull the cord, the wire wheel 2 rotates reversely, and the cord is loosened. The buckle 51 and the annular boss 31 cooperate to prevent the upper cover 5 and the rotating claw 1 from falling off the seat body. When it is necessary to tighten the cord again, press the upper cover 5 downward, the rotating claw 1 meshes with the wire wheel 2 again, and the flange 12 descends again to the position where it is clamped with the annular boss 31, and the rotating claw 1 can drive the wire wheel 2 to rotate again.

[0078] This device can be applied to daily necessities such as shoelaces, backpacks, helmets, etc. Among them, the base 4 is fixed on shoes, backpacks or helmets, and can be fixed by bonding, hot melting or sewing, which is not limited here.

[0079] In the description of this specification, specific features, structures or characteristics can be combined in a suitable manner in any one or more embodiments or examples.

[0080] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0081] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A cord adjustment device, characterized in that, It includes a rotary claw, a seat and a wire wheel for winding a rope, wherein: The wire wheel is located inside the base body, and when the rotary claw is in transmission connection with the wire wheel, the rotary claw can drive the wire wheel to rotate unidirectionally clockwise or counterclockwise relative to the base body; The rotary claw includes a limiting connecting plate, an annular boss is provided on the outer periphery of the base body, the limiting connecting plate cover is provided outside the annular boss, and there is a clamping state between the limiting connecting plate and the annular boss. When in the clamping state, the rotary claw can drive the wire wheel to rotate unidirectionally clockwise or counterclockwise relative to the base body; The limit connecting plate is deformable under the action of external force, and the limit connecting plate can release the clamping state with the annular boss, so that when the external force pulls the rotary claw, the rotary claw and the wire wheel are in a disengaged state.

2. The rope adjustment device according to claim 1, characterized in that: The limiting connecting plate is provided with a flange, the flange protruding from the inner wall of the limiting connecting plate, and the flange is coaxially arranged with the rotary claw and the seat body; When the limiting connecting plate and the annular boss are in the clamping state, the flange is clamped with the annular boss.

3. The rope adjustment device according to claim 2, characterized in that: One or more flanges are provided on the same limiting connecting plate. When more than two flanges are provided on the same limiting connecting plate, the flanges are spaced apart around the axis of the rotary claw.

4. The cord adjustment device according to claim 1, wherein, The limiting connecting plate is an arc-shaped plate, the number of the limiting connecting plates is more than two, and all the limiting connecting plates are arranged at intervals around the axis of the rotary claw.

5. The cord adjustment device according to claim 1, characterized in that, The rope adjustment device also includes an upper cover, the rotary claw is fixedly connected to the upper cover, and there is a gap between the limiting connecting plate and the inner peripheral wall of the upper cover to allow the limiting connecting plate to deform.

6. The cord adjusting device according to claim 5, characterized in that, The upper cover is fixed with buckles, and the buckles are arranged at intervals around the axis of the upper cover; A clearance gap is formed between adjacent limiting connecting plates, and the buckle passes through the corresponding clearance gap; When the limiting connecting plate and the annular boss are released from the clamping state, and the rotary claw and the wire wheel are in a disengaged state, the buckle is clamped with the annular boss, thereby preventing the upper cover from falling off the base body.

7. The cord adjusting device according to claim 1, characterized in that, One of the rotating claw and the line wheel is provided with a one-way convex tooth, and the other is provided with a one-way tooth groove, and the one-way convex tooth and the one-way tooth groove are arranged at intervals around the common axis of the rotating claw and the line wheel; When the limiting connecting plate and the annular boss are in a clamping state, the one-way convex tooth extends into the one-way tooth groove for engagement, and the rotary claw can drive the wire wheel to rotate clockwise or counterclockwise relative to the seat body; When the limiting connecting plate is released from the clamping state with the annular boss, the one-way protruding tooth is disengaged from the one-way tooth groove.

8. The cord adjusting device according to claim 7, wherein The rotary pawl includes an elastic arm pawl, and the elastic arm pawl is located on the periphery of the one-way protruding tooth or the one-way tooth groove; The seat body is provided with inner bevel teeth, and the elastic arm pawl is engaged with the inner bevel teeth; The inclination direction of the inner bevel teeth is opposite to the inclination direction of the one-way tooth groove, and the matching structure between the elastic arm pawl and the inner bevel teeth only allows the rotary pawl to rotate in one direction.

9. The cord adjusting device according to claim 8, wherein, The rotary claw is provided with a clearance installation hole, and the clearance installation holes are arranged at intervals around the axis of the rotary claw. The elastic arm pawl is deformably arranged in the clearance installation hole.

10. The cord adjustment device according to claim 1, wherein, The seat body includes a body and a base, wherein: The base is fixed on the part to be fixed, the fuselage is fixedly connected to the base, a through-hole is provided on the fuselage, a belt groove is provided on the wire wheel, and a fixing column for fixing the rope is provided in the belt groove; the fixed end of the rope is fixed on the fixing column, and the rope can pass through the through-hole and be wrapped around the belt groove.

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