Rope belt adjusting device and articles for daily use

Abstract

The utility model relates to the field of rope belt adjustment, and discloses a rope belt adjusting device and an article for daily use, the rope belt adjusting device comprises a seat body, a reel and a knob, the seat body is provided with a mounting groove and a wiring hole, the wiring hole penetrates through the inner peripheral wall of the mounting groove and the outer peripheral wall of the seat body, the seat body is provided with a one-way limiting part opposite to the bottom wall of the mounting groove, and the knob is arranged on the mounting groove. The winding wheel is arranged in the mounting groove and rotationally connected with the bottom of the mounting groove, a winding groove communicated with the wiring hole is formed in the winding wheel, the winding groove and the wiring hole are communicated to form a wire containing channel, and the knob is arranged on the base and partially penetrates through the base into the mounting groove so as to be in circumferential limiting fit with the winding wheel and movably connected with the winding wheel in the axial direction. A one-way matching part is formed on the side face, facing the bottom wall of the mounting groove, of the rotary knob and is provided with a separation position away from the bottom wall of the mounting groove and a matching position close to the bottom wall of the mounting groove, the one-way matching part and the one-way limiting part are separated at the separation position and matched at the matching position in a one-way limiting mode, and potential safety hazards caused by abnormal loosening of the rope belt are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of rope and belt adjustment, in particular to a rope and belt adjustment device and daily necessities. Background Art

[0002] As life becomes more affluent, convenience in life has become the direction of improvement in daily necessities. For example, the use of self-locking mechanisms to easily loosen and tighten shoelaces and backpack straps makes consumers' daily lives more convenient and efficient.

[0003] The existing self-locking mechanism can generally achieve self-locking when tightening. Since the tightness is determined by human feeling, over-tightening often occurs. The above-mentioned self-locking mechanism can only achieve tightening adjustment during the tightening process. When over-tightened, it cannot be fine-tuned to relax. Therefore, consumers can only reset to a completely relaxed state and then tighten again, which may inevitably lead to over-tightening again, causing inconvenience during use. Patent CN116509107A provides a rope adjustment device for solving the problem that the rope cannot be fine-tuned. However, in this patent, as long as the knob is turned, the tightness of the rope will be affected. The knob is set on the outside. Once it is scratched by foreign objects, it is easy to cause the knob to turn and cause the rope to loosen, posing a safety hazard to the user. Utility Model Content

[0004] The main purpose of the utility model is to provide a rope adjustment device, which is intended to restrict the rotation of a knob in one direction and reduce the potential safety hazards caused by abnormal relaxation of the rope.

[0005] To achieve the above-mentioned purpose, the rope adjustment device proposed by the utility model comprises:

[0006] The seat body is formed with a mounting groove and a wiring hole, wherein the wiring hole penetrates the inner peripheral wall of the mounting groove and the outer peripheral wall of the seat body, and the seat body is formed with a one-way limiting portion facing away from the bottom wall of the mounting groove;

[0007] A winding wheel is disposed in the installation groove and is rotatably connected to the groove bottom of the installation groove, the winding wheel is formed with a winding groove connected to the wiring hole, and the winding groove and the wiring hole are connected to form a wire accommodating channel; and

[0008] A knob is arranged on the seat body, and a partial structure of the knob passes through the seat body into the mounting groove so as to cooperate with the circumferential limit of the winding wheel and be movably connected with the winding wheel in the axial direction. A one-way matching portion is formed on the side of the knob facing the bottom wall of the mounting groove and has a separation position away from the bottom wall of the mounting groove and a matching position close to the bottom wall of the mounting groove. The one-way matching portion and the one-way limiting portion are separated at the separation position and are one-way limitedly matched at the matching position.

[0009] Optionally, one of the one-way limiting portion and the one-way matching portion is a helical tooth structure, and the other of the one-way limiting portion and the one-way matching portion is a clamping block;

[0010] The helical tooth structure comprises a plurality of spaced helical teeth, each of which is arranged to be inclined along the same rotation direction, and the clamping block can be clamped between any two adjacent helical teeth.

[0011] Optionally, a first matching protrusion is formed on the end surface of the winding wheel facing away from the bottom wall of the installation groove, and a second matching protrusion is formed on the side surface of the knob facing the bottom wall of the installation groove;

[0012] The second mating protrusion can abut against a side wall of the first mating protrusion in a rotation direction when the knob is rotated.

[0013] Optionally, a limiting hole is formed on the end surface of the winding wheel facing away from the bottom wall of the mounting groove, and a convex column is provided on the side of the knob facing the bottom wall of the mounting groove, and the convex column has an annular convex portion;

[0014] The boss is inserted into the limiting hole, the annular protrusion is located on the side of the limiting hole facing the bottom wall of the mounting groove, and the side of the annular protrusion facing away from the bottom wall of the mounting groove can abut against the hole edge of the limiting hole facing the bottom wall of the mounting groove.

[0015] Optionally, the convex column includes at least two sub-columns, and there is an avoidance gap between each of the sub-columns;

[0016] One end of each of the sub-columns facing the bottom wall of the installation groove can move toward each other to reduce the outer diameter of one end of the protruding column facing the bottom wall of the installation groove.

[0017] Optionally, the annular protrusion is arranged to be contracted along a direction pointing toward the bottom wall of the mounting groove.

[0018] Optionally, the rope adjustment device further comprises a self-locking mechanism, and the self-locking mechanism comprises a gear ring structure, elastic latch teeth and an elastic connecting piece;

[0019] The gear ring structure is arranged on the inner circumferential wall of the seat body and forms a plurality of tooth grooves. The elastic connecting piece is arranged on the side of the winding wheel facing away from the bottom wall of the mounting groove. The elastic latch is arranged on the elastic connecting piece. The end of the elastic latch is away from the elastic connecting piece and elastically abuts against the groove wall of the tooth groove.

[0020] Optionally, the elastic connecting member is an arc-shaped spring sheet;

[0021] Two ends of the arc-shaped spring piece are connected to the winding wheel, and one end of the elastic clamping tooth is connected to the arc-shaped spring piece and is located in the middle of the arc-shaped spring piece.

[0022] Optionally, the outer peripheral wall of the seat body is provided with a first axial limiting portion, and the knob has an annular extension section;

[0023] The annular extension section is arranged around the outer circumference of the seat body, and the inner circumferential wall of the annular extension section is formed with a second axial limiting portion, which is located on the side of the first axial limiting portion facing away from the knob and can be abutted and limited with the first axial limiting portion.

[0024] The utility model also provides a daily necessities, comprising:

[0025] A main body, wherein the main body is provided with a rope and the tightness of the rope can be adjusted by the rope; and

[0026] In the above-mentioned rope adjustment device, the rope portion is wound in the winding groove of the winding wheel.

[0027] When the handle is in the closed position, the threaded rod is engaged with the threaded rod and the threaded rod is engaged with the threaded rod, thereby tightening or loosening the threaded rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0029] Figure 1 This is a structural schematic diagram of an embodiment of the rope adjustment device provided by the utility model;

[0030] Figure 2 for Figure 1 A schematic diagram of a structural breakdown of an embodiment of the invention;

[0031] Figure 3 for Figure 1 A schematic diagram of the structure of the first part of the embodiment;

[0032] Figure 4 for Figure 1 A schematic structural diagram of the second part of the structure of the embodiment in the first viewing angle;

[0033] Figure 5 for Figure 1 A schematic structural diagram of the second part of the structure of the embodiment in the second viewing angle;

[0034] Figure 6 for Figure 1 A schematic structural diagram of the third part of the embodiment in the first viewing angle;

[0035] Figure 7 for Figure 1 A schematic diagram of the structure of the third part of the embodiment under a second viewing angle.

[0036] Description of Figure Numbers:

[0037] Label name Label name 1000 Strap adjustment device 31 One-way mating part 1 base body 31a Card Block 11 Base 32 Second mating protrusion 12 Support 33 Boss 121 Cable routing hole 331 Annular convex part 122 One-way limiter 332 Column 122a Helical gear structure 34 Ring extension 123 First axial limiting portion 35 Second axial limiting portion 2 Winding reel 4 Self-locking mechanism 21 Winding slot 41 Ring gear structure 22 First mating protrusion 42 Elastic tooth 23 Limit hole 43 Elastic connector 3 Knobs 43a Curved shrapnel

[0038] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0040] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0041] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0042] The utility model provides a rope adjustment device 1000. Figures 1 to 7 This is an embodiment of the present utility model.

[0043] In the embodiment of the utility model, the strap adjustment device 1000 is as follows: Figure 2 As shown, it includes a seat body 1, a winding wheel 2 and a knob 3, the seat body 1 is formed with a mounting groove and a wiring hole 121, the wiring hole 121 penetrates the inner peripheral wall of the mounting groove and the outer peripheral wall of the seat body 1, and the seat body 1 is formed with a one-way limiting portion 122 facing away from the bottom wall of the mounting groove; the winding wheel 2 is arranged in the mounting groove and is rotatably connected to the groove bottom of the mounting groove, the winding wheel 2 is formed with a winding groove 21 connected with the wiring hole 121, and the winding groove 21 and the wiring hole 121 are connected to form a wire accommodating channel; The knob 3 is arranged on the seat body 1, and part of the structure of the knob 3 passes through the seat body 1 into the mounting groove to cooperate with the circumferential limit of the winding wheel 2 and be movably connected with the winding wheel 2 in the axial direction. A one-way matching portion 31 is formed on the side of the knob 3 facing the bottom wall of the mounting groove and has a separation position away from the bottom wall of the mounting groove and a matching position close to the bottom wall of the mounting groove. The one-way matching portion 31 and the one-way limiting portion 122 are separated at the separation position and are one-way limitedly matched at the matching position.

[0044] In the technical solution of the present invention, the rope enters or passes through the installation groove through the wiring hole 121, and is wound in the winding groove 21 through the wire accommodating channel. The winding wheel 2 is driven to rotate by turning the knob 3 to realize the winding or releasing of the rope. In the direction of the rotation axis of the knob 3, when the knob 3 is in the separated position, the one-way limiting portion 122 and the one-way matching portion 31 are not matched, and the knob 3 can be freely rotated to tighten or loosen the rope. When the knob 3 is in the matched position, the one-way limiting portion 122 of the seat body 1 and the one-way matching portion of the knob 3 are not matched. 31 one-way limit cooperation, since the seat body 1 is a fixed part fixed on the product, when the knob 3 has a tendency to rotate along the limit direction, the knob 3 is limited to rotate through the blocking of the one-way limit part 122, and there is no restriction when the knob 3 rotates in another rotation direction. By winding the rope, the loosening direction of the rope is made consistent with the above-mentioned limit direction. Even if the knob 3 is scratched by foreign objects, the rope will not loosen, thereby reducing the safety hazard caused by abnormal relaxation of the rope, improving the user experience, and protecting the user's life and property safety.

[0045] During the use of the product, a greater safety hazard will only occur when the knob 3 is accidentally touched or scratched, causing the rope to loosen. Therefore, when the rope is loosened by limiting the rotation of the knob 3 at the matching position, the rope adjustment device 1000 can reduce the safety hazard.

[0046] In order to specifically realize the one-way limiting cooperation between the one-way limiting portion 122 and the one-way matching portion 31, in one embodiment, Figure 2 and Figure 6One of the one-way limiting portion 122 and the one-way matching portion 31 is a helical tooth structure 122a, and the other of the one-way limiting portion 122 and the one-way matching portion 31 is a clamping block 31a. The helical tooth structure 122a includes a plurality of spaced helical teeth, each of which is inclined along the same rotation direction, and the clamping block 31a can be inserted between any two adjacent helical teeth. When the rotation direction of the knob 3 is the same as the inclination direction of the bevel teeth, when the knob 3 is rotated, the block 31a will move along the bevel teeth and enter between two other adjacent bevel teeth. During the movement of the block 31a along the bevel teeth, the height will increase, that is, it has a movement component away from the bottom wall of the mounting groove; and when the rotation direction of the knob 3 is opposite to the inclination direction of the bevel teeth, the block 31a will abut against one end of the bevel teeth away from the bottom wall of the mounting groove. Since the seat body 1 is a fixed part, the block 31a cannot rotate in the above direction, that is, a one-way limit fit is achieved. In other embodiments, the matching structure of the one-way limiting portion 122 and the one-way matching portion 31 can also be: the one-way matching portion 31 includes a plurality of straight triangular prisms, and each of the straight triangular prisms forms one of the side surfaces of the bottom surface at a right angle connected to the base body 1, so that the side surface where the non-right-angled edge of the bottom surface of the straight triangular prism is located is inclined to form an inverted triangular groove or an inverted right-angled trapezoidal groove between two adjacent straight triangular prisms, thereby realizing one-way limiting matching.

[0047] In this embodiment, taking into account the limited thickness of the knob 3 in the axial direction of rotation, in order to facilitate the molding of the one-way matching portion 31 on the side of the knob 3 facing the bottom wall of the mounting groove, the one-way limiting portion 122 is a helical tooth structure 122a and is provided on the seat body 1, and the one-way matching portion 31 is a block 31a and is provided on the knob 3.

[0048] Furthermore, in order to improve the stability of the cooperation between the helical tooth structure 122a and the block 31a when the knob 3 is rotated, the one-way matching portion 31 includes at least two blocks 31a, and the angles between two adjacent blocks 31a are equal. Figure 3 As shown, in this embodiment, the number of the card blocks 31a is 3.

[0049] In order to specifically realize the circumferential limit cooperation between the knob 3 and the winding wheel 2, that is, to realize that the knob 3 drives the winding wheel 2 to rotate, in one embodiment, as Figure 5As shown, the end surface of the winding wheel 2 facing away from the bottom wall of the installation groove is formed with a first mating protrusion 22, and the side surface of the knob 3 facing the bottom wall of the installation groove is formed with a second mating protrusion 32. The second mating protrusion 32 can abut against the side wall of the first mating protrusion 22 in the rotation direction when the knob 3 is rotated. As the knob 3 continues to rotate, the second mating protrusion 32 pushes the first mating protrusion 22 to achieve the knob 3 driving the winding wheel 2 to rotate. The first mating protrusion 22 and the second mating protrusion 32 can be in direct abutment relationship or have a certain gap. In this embodiment, two first mating protrusions 22 are provided, and two second mating protrusions 32 are correspondingly provided. The two first mating protrusions 22 are arranged at intervals, and each second mating protrusion 32 is respectively provided in a spacing space between the two first mating protrusions 22, so that the knob 3 is more efficient when changing between the two rotation directions. Among them, at least one second mating protrusion 32 is provided.

[0050] Since the winding wheel 2 is arranged in the installation groove, in order to achieve the matching or connection between the knob 3 and the winding wheel 2, the base 11 has an annular mounting plate, the annular mounting plate is arranged at the notch of the installation groove, and the second matching protrusion 32 extends into the installation groove through the hole in the middle of the annular mounting plate. The one-way limiting portion 122 is arranged on the annular mounting plate.

[0051] In order to realize the movable connection between the knob 3 and the winding wheel 2 in the rotation axis direction, in one embodiment, Figure 4 As shown, a limiting hole 23 is formed on the end surface of the winding wheel 2 facing away from the bottom wall of the mounting groove, and a boss 33 is provided on the side of the knob 3 facing the bottom wall of the mounting groove, and the boss 33 has an annular convex portion, and the boss 33 is penetrated into the limiting hole 23, and the annular convex portion passes through the limiting hole 23 to the side of the limiting hole 23 facing the bottom wall of the mounting groove, and the side of the annular convex portion facing away from the bottom wall of the mounting groove can abut against the hole edge of the limiting hole 23 facing the bottom wall of the mounting groove, and when the knob 3 moves to the separation position, the annular convex portion abuts against the hole edge of the limiting hole 23, and the annular convex portion 331 is used to determine the separation position and provide guidance for the axial movement of the knob 3 relative to the winding wheel 2.

[0052] In order to facilitate the protrusion 33 to pass through the limiting hole 23, in one embodiment, Figure 3The protrusion 33 includes at least two sub-columns 332, each of which has an avoidance gap, and each of which has one end facing the bottom wall of the installation groove and can move toward each other to reduce the outer diameter of the end of the protrusion 33 facing the bottom wall of the installation groove. When the protrusion 33 enters the limiting hole 23, under the pressure of the hole wall of the limiting hole 23, each of the sub-columns 332 moves toward one end of the bottom wall of the installation groove, and even abuts against each other, thereby reducing the outer diameter of the protrusion 33, so that it can smoothly enter the limiting hole 23 and pass through the limiting hole 23. After passing through the limiting hole 23, the pressure from the hole wall of the limiting hole 23 on the end of the protrusion 33 facing the bottom wall of the installation groove disappears, and each of the sub-columns 332 is reset, the outer diameter of the protrusion 33 is increased, and the outer diameter of the annular protrusion 331 is also increased, so that it can be limited and abutted with the hole edge of the limiting hole 23 facing the bottom wall of the installation groove.

[0053] Furthermore, in order to facilitate the boss 33 to enter the limiting hole 23, in one embodiment, the annular protrusion 331 is contracted in the direction pointing to the bottom wall of the mounting groove, so that the end of the boss 33 has a smaller outer diameter, and the outer diameter gradually increases in the direction away from the bottom wall of the mounting groove, making it easier for the boss 33 to enter the limiting hole 23.

[0054] In order to realize the self-locking of the rope adjustment device 1000 after the rope is retracted and released, in one embodiment, Figure 5 and Figure 7 As shown, the rope adjustment device 1000 also includes a self-locking mechanism 4. In order to reduce the possibility of breakage of the elastic tooth 42 of the self-locking mechanism 4, in one embodiment, the self-locking mechanism 4 includes a ring gear structure 41, an elastic tooth 42 and an elastic connecting member 43. The ring gear structure 41 is arranged on the inner circumferential wall of the seat body 1 and is formed with a plurality of tooth grooves. The elastic connecting member 43 is arranged on the side of the winding wheel 2 facing away from the bottom wall of the mounting groove. The elastic tooth 42 is arranged on the elastic connecting member 43. The end of the elastic tooth 42 away from the elastic connecting member 43 elastically abuts against the groove wall of the tooth groove, that is, The elastic tooth 42 is connected to the winding wheel 2 via the elastic connecting piece 43. Since the torque is provided by the knob 3, which drives the elastic tooth 42 to rotate, if one end of the elastic tooth 42 is in direct hard contact with the knob 3, then when the customer suddenly applies a large torque for the purpose of quick retraction or the like, there is a risk of breakage at the connection between the elastic tooth 42 and the knob 3. Therefore, the contact area with the knob 3 is increased by the elastic connecting piece 43, and the elastic connecting piece 43 itself has a certain deformation ability, thereby reducing the possibility of breakage of the elastic tooth 42.

[0055] In order to realize the elastic connection between the elastic latch 42 and the knob 3, in one embodiment, Figure 5 As shown, the elastic connector 43 is an arc-shaped spring piece 43a, both ends of which are connected to the winding wheel 2, one end of the elastic tooth 42 is connected to the arc-shaped spring piece 43a and is located in the middle of the arc-shaped spring piece 43a, and the arc-shaped spring piece 43a has a certain elastic deformation ability in both horizontal rotation directions. When the elastic tooth 42 is located in the middle of the arc-shaped spring piece 43a, the deformation ability of the arc-shaped spring piece 43a on both sides of the elastic tooth 42 is the same. In other embodiments, the elastic connector 43 can also be a conical or truncated cone-shaped elastic seat, and one end of the elastic tooth 42 is connected to the narrow end of the elastic seat.

[0056] In order to prevent the user from using too much force when lifting the knob 3 for axial movement, thereby causing the knob 3 to separate from the winding wheel 2, in one embodiment, Figure 3 As shown, the outer peripheral wall of the seat body 1 is provided with a first axial limiting portion 123, and the knob 3 has an annular extension section 34, which is surrounded by the outer peripheral side of the seat body 1, and the inner peripheral wall of the annular extension section 34 is formed with a second axial limiting portion 35, and the second axial limiting portion 35 is located on the side of the first axial limiting portion 123 that is away from the knob 3 and can be abutted and limited with the first axial limiting portion 123, that is, through the axial limiting relationship between the first axial limiting portion 123 and the second axial limiting portion 35, the maximum lifting height of the knob 3 is limited, thereby preventing the knob 3 from separating from the winding wheel 2.

[0057] The bottom wall of the mounting groove is provided with a protrusion for guiding, and the winding wheel 2 is provided with a side opening facing the bottom wall of the mounting groove, and the hole cooperates with the protrusion to determine the position of the rotation axis of the winding wheel 2 and limit the winding wheel 2 to prevent it from shifting during rotation.

[0058] The seat body 1 includes a base 11 and a support member 12, the base 11 and the support member 12 together form the installation groove, the base 11 and the support member 12 are detachably connected, and the support member 12 is formed with the wiring hole 121, the one-way limiting portion 122, the first axial limiting portion 123 and the gear ring structure 41.

[0059] The utility model also provides a daily necessities, which includes a main body and the rope adjustment device 1000, wherein the main body is provided with a rope and can be adjusted in tension by the rope, and the rope is partially wound in the winding groove 21 of the winding wheel 2, so that the tension of the rope of the main body can be adjusted by the rope adjustment device 1000. The specific structure of the rope adjustment device 1000 refers to the above embodiment, and since the daily necessities adopt all the technical solutions of all the above embodiments, they at least have all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here. The daily necessities can be strap shoes, backpacks, storage bags, etc.

[0060] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A rope adjustment device, characterized in that: include: The seat body is formed with a mounting groove and a wiring hole, wherein the wiring hole penetrates the inner peripheral wall of the mounting groove and the outer peripheral wall of the seat body, and the seat body is formed with a one-way limiting portion facing away from the bottom wall of the mounting groove; A winding wheel is arranged in the installation groove and is rotatably connected to the groove bottom of the installation groove, the winding wheel is formed with a winding groove connected to the wiring hole, and the winding groove and the wiring hole are connected to form a wire accommodating channel; as well as A knob is arranged on the seat body, and a partial structure of the knob passes through the seat body into the mounting groove so as to cooperate with the circumferential limit of the winding wheel and be movably connected with the winding wheel in the axial direction. A one-way matching portion is formed on the side of the knob facing the bottom wall of the mounting groove and has a separation position away from the bottom wall of the mounting groove and a matching position close to the bottom wall of the mounting groove. The one-way matching portion and the one-way limiting portion are separated at the separation position and are one-way limitedly matched at the matching position.

2. The rope adjustment device according to claim 1, characterized in that: One of the one-way limiting portion and the one-way matching portion is a helical tooth structure, and the other of the one-way limiting portion and the one-way matching portion is a clamping block; The helical tooth structure comprises a plurality of spaced helical teeth, each of which is arranged to be inclined along the same rotation direction, and the clamping block can be clamped between any two adjacent helical teeth.

3. The rope adjustment device according to claim 1, characterized in that: The end surface of the winding wheel facing away from the bottom wall of the installation groove is formed with a first matching protrusion, and the side surface of the knob facing the bottom wall of the installation groove is formed with a second matching protrusion; The second mating protrusion can abut against a side wall of the first mating protrusion in a rotation direction when the knob is rotated.

4. The rope adjustment device according to claim 1, characterized in that: A limiting hole is formed on the end surface of the winding wheel facing away from the bottom wall of the installation groove, and a convex column is provided on the side of the knob facing the bottom wall of the installation groove, and the convex column has an annular convex portion; The boss is inserted into the limiting hole, the annular protrusion is located on the side of the limiting hole facing the bottom wall of the mounting groove, and the side of the annular protrusion facing away from the bottom wall of the mounting groove can abut against the hole edge of the limiting hole facing the bottom wall of the mounting groove.

5. The rope adjustment device according to claim 4, characterized in that: The convex column comprises at least two sub-columns, and there is an avoidance gap between each of the sub-columns; One end of each of the sub-columns facing the bottom wall of the installation groove can move toward each other to reduce the outer diameter of one end of the protruding column facing the bottom wall of the installation groove.

6. The rope adjustment device according to claim 4, characterized in that: The annular protrusion is arranged to be contracted along the direction pointing to the bottom wall of the installation groove.

7. The rope adjustment device according to any one of claims 1 to 6, characterized in that: The rope adjustment device also includes a self-locking mechanism, which includes a gear ring structure, elastic latch teeth and an elastic connecting piece; The gear ring structure is arranged on the inner circumferential wall of the seat body and forms a plurality of tooth grooves. The elastic connecting piece is arranged on the side of the winding wheel facing away from the bottom wall of the mounting groove. The elastic latch is arranged on the elastic connecting piece. The end of the elastic latch is away from the elastic connecting piece and elastically abuts against the groove wall of the tooth groove.

8. The rope adjustment device according to claim 7, characterized in that: The elastic connecting piece is an arc-shaped spring piece; Two ends of the arc-shaped spring piece are connected to the winding wheel, and one end of the elastic clamping tooth is connected to the arc-shaped spring piece and is located in the middle of the arc-shaped spring piece.

9. The rope adjustment device according to any one of claims 1 to 6, characterized in that: The outer peripheral wall of the seat body is provided with a first axial limiting portion, and the knob has an annular extension section; The annular extension section is arranged around the outer circumference of the seat body, and the inner circumferential wall of the annular extension section is formed with a second axial limiting portion, which is located on the side of the first axial limiting portion facing away from the knob and can be abutted and limited with the first axial limiting portion.

10. A daily necessity, characterized in that: include: A main body, wherein the main body is provided with a rope and the tightness of the rope can be adjusted by the rope; and The rope adjustment device according to any one of claims 1 to 9, wherein the rope portion is wound in a winding groove of the winding wheel.

Images