Pawl disc and rope adjuster
By designing the coordination of one-way pawl and limit bumps on the pawl disc, the problem of shaking when the pawl disc rotates is solved, achieving a more stable rotational connection and force uniformity.
Patent Information
- Application Number
- CN202323664206.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-30
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2033-12-30
AI Technical Summary
The pawl disc is prone to shaking during rotation, and lack of support leads to instability.
A pawl disc is designed, including the main ring body and the elastic arm. A one-way pawl and a limit bump are provided on the elastic arm. The elastic arm is realized by meshing with the pawl through the one-way teeth and inserting the limit bump into the notch. Fixed to reduce shaking.
It effectively reduces the shaking of the elastic arm, and improves the rotation stability and force uniformity between the pawl disc and the outer shell.
Smart Images
Figure CN222334390U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of rope adjusting devices, and in particular to a ratchet disc and a rope adjuster. Background Art
[0002] The rope adjuster winds the rope through the internal wire wheel, thereby adjusting the tightness of the rope. For example, the rope adjuster can be used to adjust the tightness of shoelaces, school bag straps, or baby waist stool straps. The rope adjuster is usually also provided with a knob, a ratchet disc, and an outer shell, wherein the knob is used to drive the spool to rotate relative to the outer shell, thereby winding the rope onto the spool, and the ratchet disc is used to cooperate with the outer shell to prevent the knob and the spool from rotating.
[0003] A one-way pawl is usually arranged on the outer periphery of the pawl disc, and a one-way tooth is arranged on the inner peripheral wall of the outer shell, and the one-way pawl meshes with the one-way tooth. However, during the rotation of the pawl disc relative to the outer shell, the elastic arm is easy to shake due to lack of support. Utility Model Content
[0004] Based on this, it is necessary to provide a pawl disc and a rope adjuster to solve the problem that the elastic arm is prone to shaking due to lack of support during the rotation of the pawl disc relative to the outer shell.
[0005] A ratchet disc is used to rotate with an outer shell along a preset direction E. The ratchet disc includes a main ring body and an elastic arm connected to each other. The elastic arm is located between the outer shell and the main ring body, and the elastic arm has an outer wall facing the outer shell and an inner wall facing the main ring body. A one-way ratchet is provided on the outer wall, and a one-way tooth is provided on the outer shell. The one-way ratchet and the one-way tooth are meshed with each other. A limiting protrusion is provided on the inner wall, and a notch is provided on the main ring body. As the ratchet disc rotates relative to the outer shell along the preset direction E, the elastic arm can deform in response to external force and push the limiting protrusion to insert into the notch.
[0006] In one of the embodiments, a guide surface is provided on the main ring body, the guide surface extends to the bottom wall of the notch, and the guide surface is used to guide the limiting protrusion to be inserted into the notch.
[0007] In one embodiment, the guide surface is configured as a plane, and along the axial direction of the main ring body, the limiting protrusion and the guide surface are clearance-matched. It can be understood that, in this configuration, when the limiting protrusion is inserted into the notch along the guide surface, there will be no interference with the guide surface, so that the limiting protrusion can be inserted into the notch more smoothly.
[0008] In one embodiment, the notch penetrates one side end surface of the main ring body along the axial direction of the main ring body. It can be understood that such a configuration makes the structure of the notch simple, thereby facilitating the processing of the notch on the main ring body.
[0009] In one embodiment, one end of the elastic arm is connected to the main ring body, and the other end extends along the circumference of the main ring body and is suspended in the air. The one-way pawl and the limiting protrusion are both arranged at the end of the elastic arm that is suspended in the air. It can be understood that, in such an arrangement, as the pawl disk rotates relative to the outer shell along the preset direction E, when the one-way tooth squeezes the one-way pawl, the end of the elastic arm that is suspended in the air is subjected to force, and is more likely to deform in the direction close to the main ring body.
[0010] In one embodiment, along the radial direction of the main ring body, the one-way pawl and the limiting protrusion are arranged to be opposite to each other. It is understandable that, in such an arrangement, when the one-way pawl is squeezed by the one-way teeth, it can directly push the limiting protrusion to move toward the notch in the radial direction.
[0011] In one embodiment, there are multiple elastic arms, and the multiple elastic arms are arranged at intervals along the circumference of the main ring body. It can be understood that such an arrangement enables the pawl plate and the outer shell to be more firmly rotatably connected, and the pawl plate is subjected to more uniform circumferential force.
[0012] In one embodiment, each elastic arm is provided with at least one limiting protrusion, and the number of the notches is arranged in a one-to-one correspondence with the number of the limiting protrusions.
[0013] The present application also provides a rope adjuster, which further includes a knob, a spool, an outer shell and a ratchet disc of any one of the above embodiments. The spool is used to wind the rope, and the spool and the ratchet disc are respectively connected to the knob and can rotate synchronously with the knob.
[0014] In one embodiment, the notch penetrates the end surface of the main ring body close to the knob along the axial direction of the main ring body, and after the limiting protrusion is inserted into the notch, the limiting protrusion is sandwiched between the knob and the bottom wall of the notch along the axial direction of the main ring body. It can be understood that, in this arrangement, the knob can also axially limit the limiting protrusion, which is conducive to further reducing the shaking of the elastic arm along the axial direction of the main ring body.
[0015] Compared with the prior art, the pawl disk and rope adjuster provided by the present application, when the pawl disk rotates relative to the outer shell along a preset direction E, the one-way tooth and the one-way pawl squeeze each other, so that the elastic arm is deformed in the direction close to the main ring body, and pushes the limiting protrusion to insert into the notch. Therefore, the limiting protrusion can be limited in the notch, so that the elastic arm can be relatively fixed to the main ring body to reduce the shaking of the elastic arm. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0017] Figure 1 A schematic diagram of the structure of the rope adjuster provided for this application;
[0018] Figure 2 An exploded view of the rope adjuster provided for this application;
[0019] Figure 3 A schematic diagram of the structure of the pawl disc provided for this application;
[0020] Figure 4 A top view of the outer shell provided for this application;
[0021] Figure 5 for Figure 4 Enlarged schematic diagram at A.
[0022] Figure numerals: 10, pawl plate; 11, main ring body; 111, notch; 112, guide surface; 12, elastic arm; 121, outer wall; 122, inner wall; 123, one-way pawl; 124, limiting protrusion; 20, outer shell; 21, one-way tooth; 211, inclined surface; 212, stop surface; 213, slot; 22, wire entry hole; 23, wire outlet hole; 30, knob; 40, spool; 41, threading hole; 50, rope; 60, base. DETAILED DESCRIPTION
[0023] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.
[0024] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.
[0025] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying 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 the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0026] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediate medium. Moreover, a first feature being “above”, “above” or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below” or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0027] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more related listed items.
[0028] See also Figures 1 to 3 The present application provides a pawl disk 10, which is used to rotate and cooperate with an outer shell 20 along a preset direction E. The pawl disk 10 includes a main ring body 11 and an elastic arm 12 connected to each other. The elastic arm 12 is located between the outer shell 20 and the main ring body 11, and the elastic arm 12 has an outer wall facing the outer shell 20 and an inner wall facing the main ring body 11. A one-way pawl 123 is provided on the outer wall 121, and a one-way tooth 21 is provided on the outer shell 20, and the one-way pawl 123 and the one-way tooth 21 are meshed with each other; a limiting protrusion 124 is provided on the inner wall 122, and a notch 111 is opened on the main ring body 11. Among them, as the pawl disk 10 rotates relative to the outer shell 20 along the preset direction E, the elastic arm 12 can deform in response to external force and push the limiting protrusion 124 to insert into the notch 111. In this way, when the pawl plate 10 rotates relative to the outer shell 20 along the preset direction E, the one-way tooth 21 and the one-way pawl 123 squeeze each other, so that the elastic arm 12 is deformed in the direction close to the main ring body 11, and pushes the limiting protrusion 124 to be inserted into the notch 111. The limiting protrusion 124 can be limited in the notch 111, so that the elastic arm 12 can be relatively fixed on the main ring body 11 to reduce the shaking of the elastic arm 12.
[0029] It should be noted that the "one-way" in "one-way pawl 123" and "one-way tooth 21" means that the one-way pawl 123 is engaged with the one-way tooth 21, and the one-way pawl 123 can only slide relative to the one-way tooth 21 along the preset direction E, and cannot slide relative to the one-way tooth 21 along the direction opposite to the preset direction E.
[0030] Specifically, see Figures 3 to 5 , the following is an example of an embodiment to describe the process in which the one-way teeth 21 and the one-way pawl 123 are mutually squeezed and relatively unidirectionally slid when the pawl disc 10 rotates relative to the outer shell 20 along the preset direction E: the number of the one-way teeth 21 is set to be multiple, and the multiple one-way teeth 21 are arranged at intervals along the circumference of the outer shell 20. The one-way teeth 21 include an inclined surface 211 and a stop surface 212 set at an angle. Along the preset direction E, a stop surface 212 of a one-way tooth 21 and the inclined surface 211 of the next-level one-way tooth 21 are surrounded to form a slot 213, and the one-way pawl 123 is stuck in the slot 213. As the pawl disc 10 rotates relative to the outer shell 20 along the preset direction E, the inclined surface 211 squeezes the elastic arm 12 in the direction close to the main ring body 11, and the elastic arm 12 is separated from the slot 213 and stuck in the next-level slot 213. The stop surface 212 blocks the one-way pawl 123 in the direction opposite to the preset direction E, so that the pawl plate 10 cannot rotate in the reverse direction. The one-way pawl 123 can be configured as a triangular tooth that matches the shape of the slot 213, or can be configured as a sphere, as long as it can be inserted into the slot 213 and stop the stop surface 212.
[0031] like Figure 3 As shown, one end of the elastic arm 12 is connected to the main ring body 11, and the other end extends along the circumference of the main ring body 11 and is suspended in the air. The one-way pawl 123 and the limiting protrusion 124 are both arranged at the end of the elastic arm 12 that is suspended in the air. In this way, as the pawl plate 10 rotates relative to the outer shell 20 along the preset direction E, when the one-way tooth 21 squeezes the one-way pawl 123, the end of the elastic arm 12 that is suspended in the air is stressed and is more likely to deform in the direction close to the main ring body 11.
[0032] Furthermore, along the radial direction of the main ring body 11 , the one-way pawl 123 and the limiting protrusion 124 are relatively separated from each other. Thus, when the one-way pawl 123 is pressed by the one-way teeth 21 , it can directly push the limiting protrusion 124 to move toward the notch 111 along the radial direction.
[0033] There are multiple elastic arms 12, and the multiple elastic arms 12 are arranged at intervals along the circumference of the main ring body 11. Since the elastic arms 12 are rotatably connected to the outer shell 20, by arranging multiple elastic arms 12 at intervals along the circumference of the main ring body 11, the pawl plate 10 and the outer shell can be more firmly rotatably connected, and the pawl plate 10 is subjected to more uniform circumferential force.
[0034] Furthermore, the plurality of elastic arms 12 may be evenly spaced and distributed along the circumference of the main ring body 11 .
[0035] At least one limiting protrusion 124 and a plurality of one-way ratchets 123 may be provided on each elastic arm 12 , and the number of the notches 111 and the number of the limiting protrusions 124 are provided in a one-to-one correspondence.
[0036] The notch 111 penetrates one end surface of the main ring body 11 along the axial direction of the main ring body 11 , so that the structure of the notch 111 is simple, thereby facilitating machining the notch 111 on the main ring body 11 .
[0037] like Figure 3 As shown, a guide surface 112 is provided on the main ring body 11 , and the guide surface 112 extends to the bottom wall of the notch 111 , and the guide surface 112 is used to guide the limiting protrusion 124 to enter the notch 111 .
[0038] The guide surface 112 is configured as a plane, and along the axial direction of the main ring body 11, the limiting protrusion 124 is clearance-matched with the guide surface 112. In this way, when the limiting protrusion 124 slides into the notch 111 along the upper side of the guide surface 112, there will be no interference with the guide surface 112, which is conducive to ensuring that the limiting protrusion 124 is smoothly inserted into the notch 111.
[0039] Along the axial direction of the main ring body 11 , the width of the gap between the limiting protrusions 124 along the guide surface 112 is 0.15 mm.
[0040] like Figure 2 As shown, the present application also provides a rope adjuster, which also includes a knob 30, a spool 40, an outer shell 20, and a base 60. And the pawl disk 10 of any of the above embodiments, the spool 40 is used to wind the rope 50, the spool 40 and the pawl disk 10 are respectively connected to the knob 30, and can rotate synchronously with the knob 30. The base 60 is snap-connected with the outer shell 20, and the base 60 is used to install the rope adjuster on a body that needs to be adjusted, such as a waist stool, shoes, etc. The base 60 is connected to the body that needs to be adjusted by screws, rivets, or stitches.
[0041] Furthermore, the notch 111 penetrates the end surface of the main ring body 11 close to the knob 30 along the axial direction of the main ring body 11, and after the limiting protrusion 124 is inserted into the notch 111, the limiting protrusion 124 is located between the knob 30 and the bottom wall of the notch 111 along the axial direction of the main ring body 11. In this way, the knob 30 can also axially limit the limiting protrusion 124, which is conducive to further reducing the shaking of the elastic arm 12 along the axial direction of the main ring body 11.
[0042] The working principle of the rope adjuster is described below: the side wall of the outer shell 20 is provided with a wire entry hole 22 and a wire exit hole 23 for the rope 50 to enter and pass through the interior of the outer shell 20, and the spool 40 is provided with two threading holes, and one end of the rope 50 passes through the two threading holes 41 in sequence and is connected to the outer periphery of the spool 40. When the rope needs to be tightened, the user can drive the spool 40 and the ratchet disk 10 to rotate along the preset direction E by turning the knob 30. At this time, the one-way ratchet 123 switches among the multiple slots 213 along the preset direction E, and the rope 50 is wound around the spool 40 and gradually tightened. When the rope 50 is tightened to the desired degree, the user stops turning the knob 30, and the one-way ratchet 123 on the ratchet disk 10 is stuck in a certain slot 213 to prevent the spool 40 from rotating in the opposite direction, so that the rope 50 is firmly wound around the spool 40.
[0043] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0044] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of patent protection of the present application shall be subject to the attached claims.
Claims
1. A ratchet plate, used to rotate with an outer shell (20) along a preset direction E, characterized in that: The ratchet plate (10) comprises a main ring body (11) and an elastic arm (12) connected to each other, wherein the elastic arm (12) is located between the outer shell (20) and the main ring body (11), and the elastic arm (12) has an outer wall (121) facing the outer shell (20) and an inner wall (122) facing the main ring body (11); The outer wall (121) is provided with a one-way pawl (123), the outer shell is provided with a one-way tooth (21), and the one-way pawl (123) and the one-way tooth (21) are meshed with each other; the inner wall (122) is provided with a limiting protrusion (124), and the main ring body (11) is provided with a notch (111); Wherein, as the pawl plate (10) rotates relative to the outer shell (20) along a preset direction E, the elastic arm (12) can deform in response to an external force and push the limiting protrusion (124) to insert into the notch (111).
2. The ratchet plate according to claim 1, characterized in that: The main ring body (11) is provided with a guide surface (112), the guide surface (112) extends to the bottom wall of the notch (111), and the guide surface (112) is used to guide the limiting protrusion (124) to be inserted into the notch (111).
3. The ratchet plate according to claim 2, characterized in that: The guide surface (112) is configured as a plane, and along the axial direction of the main ring body (11), there is a clearance fit between the limiting protrusion (124) and the guide surface (112).
4. The ratchet plate according to claim 1, characterized in that: The notch (111) penetrates one end surface of the main ring body (11) along the axial direction of the main ring body (11).
5. The ratchet plate according to claim 1, characterized in that: One end of the elastic arm (12) is connected to the main ring body (11), and the other end extends along the circumference of the main ring body (11) and is suspended in the air; The one-way ratchet pawl (123) and the limiting protrusion (124) are both arranged at one end of the elastic arm (12) which is suspended in the air.
6. The ratchet plate according to claim 1, characterized in that: Along the radial direction of the main ring body (11), the one-way pawl (123) and the limiting protrusion (124) are arranged to be opposite to each other.
7. The ratchet plate according to claim 1, characterized in that: The elastic arms (12) are multiple in number, and the multiple elastic arms (12) are arranged at intervals along the circumference of the main ring body (11).
8. The ratchet plate according to claim 7, characterized in that: Each of the elastic arms (12) is provided with at least one limiting protrusion (124), and the number of the notches (111) and the number of the limiting protrusions (124) are arranged in a one-to-one correspondence.
9. A rope adjuster, characterized in that: The rope adjuster also includes a knob (30), a spool (40), an outer shell (20), and a pawl disk (10) according to any one of claims 1 to 8, wherein the spool (40) is used to wind the rope (50), and the spool (40) and the pawl disk (10) are respectively connected to the knob (30) and can rotate synchronously with the knob (30).
10. The rope adjuster according to claim 9, characterized in that: The notch (111) penetrates the end surface of the main ring body (11) close to the knob (30) along the axial direction of the main ring body (11); after the limiting protrusion (124) is inserted into the notch (111), the limiting protrusion (124) is located between the knob (30) and the bottom wall of the notch (111) along the axial direction of the main ring body (11).