Ratchet mechanism
By adopting a sliding member design in the ratchet mechanism, self-locking is achieved using different friction structures, the short service life caused by the spring parts is solved and the durability of the ratchet mechanism is improved.
Patent Information
- Application Number
- CN202310181326.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-02-27
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2043-02-27
AI Technical Summary
The existing ratchet mechanism contains spring parts, which leads to a short service life, especially in harsh environments that are prone to corrosion or permanent deformation.
The sliding member design is adopted, and the two ends of the sliding member have different friction structures, which can cause friction differences when it rotates in a specific direction, achieve a self-locking effect and avoid the use of elastic parts.
It improves the service life of the ratchet mechanism in harsh environments, avoids damage and corrosion of elastic parts, and ensures one-way rotation function.
Smart Images
Figure CN116221300B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of ratchets, and particularly to a ratchet mechanism. Background Art
[0002] A ratchet mechanism is a one-way intermittent motion mechanism. Currently, most existing ratchet mechanisms include elastic members such as springs. For example, the elastic member controls the pawl to abut against the ratchet, so that the ratchet mechanism can only rotate in one direction. Since such a ratchet mechanism contains a spring member, on the one hand, the spring member is constantly changing between the stretched state and the compressed state, which is easy to be damaged. On the other hand, the spring member is easily corroded or permanently deformed in a harsh environment. The above two aspects may reduce the service life of the ratchet mechanism, resulting in a relatively short life of the ratchet mechanism. Summary of the Invention
[0003] In order to overcome the above-mentioned defects of the prior art, the technical problem to be solved by the embodiments of the present invention is to provide a ratchet mechanism, which can solve the problem of short service life of the ratchet with a spring in the prior art.
[0004] The specific technical solution of the embodiment of the present invention is as follows:
[0005] A ratchet mechanism, the ratchet mechanism comprising:
[0006] A stator extending along an axis, the stator having a through hole;
[0007] A rotor disposed in the through hole, the rotor having a through hole formed in a direction perpendicular to the axis;
[0008] A sliding member slidably disposed in the through hole, both ends of the sliding member being capable of abutting against the side wall of the through hole. At least one end of the sliding member has a first resistance structure on a side facing a first rotation direction, and both ends of the sliding member have a second resistance structure on a side facing away from the first rotation direction. When the rotor is about to drive the sliding member to rotate in the first rotation direction, the frictional force generated between the first resistance structure and the side wall of the through hole enables the rotor to rotate in the first rotation direction; when the rotor is about to drive the sliding member to rotate in a second rotation direction, the frictional force generated between the second resistance structure and the side wall of the through hole enables the rotor to remain stationary; the first rotation direction is the opposite direction of the second rotation direction.
[0009] Preferably, the axis of the through hole and the axis of the rotor are the same axis.
[0010] Preferably, in the radial cross-section of the through hole, the distance between two intersection points of any straight line passing through the axis of the through hole and the inner side wall of the through hole is equal.
[0011] Preferably, the through hole extends in a straight line direction and passes through the axis of the rotor.
[0012] Preferably, the structures at both ends of the sliding member are symmetric with respect to the center of the sliding member.
[0013] Preferably, in the radial cross-section of the through hole, the end portions at both ends of the sliding member respectively have a first end point and a second end point, the first end point and the second end point abut against the inner side wall of the through hole, and the line connecting the first end point and the second end point passes through the axis of the rotor; the sides of the first end point and the second end point facing the first rotation direction are respectively the first resistance structures, and the sides of the first end point and the second end point facing away from the first rotation direction are respectively the second resistance structures; the degree of decrease of the first resistance structure in the direction of the first rotation is less than the degree of decrease of the second resistance structure in the direction away from the first rotation.
[0014] Preferably, the second edge line connected to the first end point or the second end point in the second resistance structure is located on the straight line formed by the first end point and the second end point.
[0015] Preferably, the second resistance structure is in a stepped shape.
[0016] Preferably, in the radial cross-section of the through hole, the curve formed by the inner side wall of the through hole includes a plurality of sub-curves, and the plurality of sub-curves are distributed in a circumferential manner around the axis of the through hole, and adjacent sub-curves are connected; each sub-curve includes two connected equiangular spirals, and the two equiangular spirals are symmetric with respect to the line connecting their connection point and the axis of the through hole; the number of the curves is odd.
[0017] Preferably, in the direction of the first rotation, the degree of decrease of the first edge line connected to the first end point or the second end point in the first resistance structure is greater than the degree of decrease of the equiangular spiral at the corresponding position of the first end point or the second end point; the first edge line is connected to the side wall of the sliding member.
[0018] The technical solution of the present invention has the following remarkable beneficial effects:
[0019] In the ratchet mechanism of the present application, a through hole can be formed in the stator, and a rotatable rotor is arranged in the through hole. At the same time, the rotor is provided with a through hole, and a slidable sliding member is inserted through the through hole, and both ends of the sliding member can abut against the side wall of the through hole. Since at least one end of the sliding member has a first resistance structure on the side facing the first rotation direction, and both ends of the sliding member have a second resistance structure on the sides facing away from the first rotation direction respectively, the structural differences between the first resistance structure and the second resistance structure result in completely different frictional forces generated between them and the side wall of the through hole. The frictional force generated between the first resistance structure and the side wall of the through hole enables relative sliding between the sliding member and the stator so that the rotor can rotate along the first rotation direction, and the frictional force generated between the second resistance structure and the side wall of the through hole prevents relative sliding between the sliding member and the stator to generate self-locking, so that the rotor remains stationary. Finally, the rotor in the ratchet mechanism can only rotate in one direction, and there is no elastic member in the entire ratchet mechanism, which can effectively improve the service life of the ratchet mechanism in harsh environments.
[0020] Reference is made to the following description and the drawings, which disclose in detail specific embodiments of the invention and indicate the ways in which the principles of the invention may be employed. It should be understood that the embodiments of the invention are not limited in scope thereby. Features described and / or illustrated with respect to one embodiment may be used in the same or similar way in one or more other embodiments, combined with the features in the other embodiments, or instead of the features in the other embodiments. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] The drawings described herein are for illustrative purposes only and are not intended to limit the scope of the disclosure of the invention in any way. Additionally, the shapes and proportional dimensions of the components in the drawings are only schematic and are used to assist in the understanding of the invention, and do not specifically limit the shapes and proportional dimensions of the components of the invention. Those skilled in the art can, under the teaching of the invention, select various possible shapes and proportional dimensions according to specific circumstances to implement the invention.
[0022] Figure 1 It is the front view of the ratchet mechanism when the rotor is in the initial position in the embodiment of the present invention;
[0023] Figure 2 It is the left view of the rotor when it is in the initial position in the embodiment of the present invention;
[0024] Figure 3 It is the assembly drawing of the rotor and the sliding member when the rotor is in the initial position in the embodiment of the present invention;
[0025] Figure 4 It is the schematic diagram of the sliding member sliding in the rotor in the embodiment of the present invention;
[0026] Figure 5 This is the front view of the rotor in a certain motion position in the embodiment of the present invention.
[0027] The reference numerals of the above drawings:
[0028] 1, stator; 11, through hole; 111, sub-curve; 2, rotor; 21, through hole; 3, sliding member; 31, first resistance structure; 311, first edge line; 32, second resistance structure; 321, second edge line; 33, first end point; 34, second end point. Detailed implementation manners
[0029] Combined with the description of the drawings and the specific implementation manners of the present invention, the details of the present invention can be more clearly understood. However, the specific implementation manners of the present invention described herein are only for the purpose of explaining the present invention and cannot be understood in any way as a limitation of the present invention. Under the teaching of the present invention, those skilled in the art can conceive any possible deformation based on the present invention, and all of these should be regarded as belonging to the scope of the present invention. It should be noted that when an element is referred to as being "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "mounted", "connected", and "connected" should be understood in a broad sense. For example, they can be mechanical connections or electrical connections, or they can be the communication inside two elements. They can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific situations. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation manner.
[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs. The terms used in the specification of this application herein are only for the purpose of describing specific implementation manners and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.
[0031] In order to solve the problem that the ratchet with a spring in the prior art has a short service life, a ratchet mechanism is proposed in this application. Figure 1 This is the front view of the ratchet mechanism when the rotor is in the initial position in the embodiment of the present invention. Figure 2 This is the left view of the rotor when it is in the initial position in the embodiment of the present invention. Figure 3 This is the assembly drawing of the rotor and the sliding member when the rotor is in the initial position in the embodiment of the present invention. Figure 4Schematic diagram of the sliding part sliding in the rotor in the embodiment of the present invention Figure 5 Front view of the rotor in a certain motion position in the embodiment of the present invention, as Figures 1 to 5 shown, the ratchet mechanism may include: a stator 1 extending along the axis, the stator 1 having a through hole 11; a rotor 2 disposed in the through hole 11, the rotor 2 having a through hole 21 opened in a direction perpendicular to the axis; a sliding part 3 slidably disposed in the through hole 21.
[0032] Wherein, as Figure 1 and Figure 5 shown, both ends of the sliding part 3 can abut against the side wall of the through hole 11, so as to generate different magnitudes of frictional forces. At least one end of the sliding part 3 has a first resistance structure 31 on the side facing the first rotation direction, and both ends of the sliding part 3 have a second resistance structure 32 on the sides facing away from the first rotation direction. As Figure 1 shown in, the first rotation direction is the clockwise direction A.
[0033] When the rotor 2 is about to drive the sliding part 3 to rotate in the first rotation direction, the frictional force generated by the first resistance structure 31 and the side wall of the through hole 11 enables the rotor 2 to rotate in the first rotation direction. That is to say, the frictional force generated by the first resistance structure 31 and the side wall of the through hole 11 is small. When an external torque drives the rotor 2 to rotate in the first rotation direction, the rotor 2 can still rotate in the first rotation direction by overcoming the frictional force generated by the first resistance structure 31 of the sliding part 3 and the side wall of the through hole 11.
[0034] When the rotor 2 is about to drive the sliding part 3 to rotate in the second rotation direction, the frictional force generated by the second resistance structure 32 and the side wall of the through hole 11 enables the rotor 2 to remain stationary. The first rotation direction is the opposite direction of the second rotation direction. As Figure 1 and Figure 5 shown in, the second rotation direction is the counterclockwise direction. That is to say, the frictional force generated by the second resistance structure 32 and the side wall of the through hole 11 is large. When an external torque drives the rotor 2 to rotate in the second rotation direction, the rotor 2 cannot overcome the frictional force generated by the second resistance structure 32 of the sliding part 3 and the side wall of the through hole 11 and cannot rotate in the second rotation direction, and the rotor 2 remains stationary.
[0035] Specifically, as Figure 1 、 Figures 3 to 5As shown, in the radial cross-section of the through-hole 11, the end parts at both ends of the sliding member 3 respectively have a first end point 33 and a second end point 34. The first end point 33 and the second end point 34 are in contact with the inner side wall of the through-hole 11, and the connection line of the first end point 33 and the second end point 34 passes through the axis of the rotor 2. The sides of the first end point 33 and the second end point 34 facing the first rotation direction are respectively the first resistance structures 31, and the sides of the first end point 33 and the second end point 34 facing away from the first rotation direction are respectively the second resistance structures 32. The degree of descent of the first resistance structure 31 in the direction of the first rotation is less than the degree of descent of the second resistance structure 32 in the direction away from the first rotation, so that the frictional force generated between the first resistance structure 31 and the side wall of the through-hole 11 when rotating in the first rotation direction is less than the frictional force generated between the second resistance structure 32 and the side wall of the through-hole 11 when rotating in the second rotation direction.
[0036] As feasible, the cross-section of the through-hole 21 can be of various shapes. In order to prevent the rotor 2 in the through-hole 11 from rotating, thereby affecting the positions of the first resistance structure 31 and the second resistance structure 32, the through-hole 21 needs to be non-circular.
[0037] In order to enable the rotor 2 to rotate stably in the stator 1, as Figure 1 and Figure 5 shown, the axis of the through-hole 11 and the axis of the rotor 2 can be the same axis.
[0038] In the radial cross-section of the through-hole 11, as Figure 1 shown, the distance between the two intersection points of any straight line passing through the axis of the through-hole 11 and the inner side wall of the through-hole 11 is equal. In this way, no matter what angle the rotor 2 rotates to in the through-hole 11, both ends of the sliding member 3 can abut against the side wall of the through-hole 11. This can enable the ratchet mechanism to have the ability not to rotate in the second rotation direction no matter what angle the rotor 2 rotates to.
[0039] When the rotor 2 drives the sliding member 3 to rotate in the first rotation direction, in order to enable the sliding member 3 to move back and forth in the through-hole 21, as Figure 3 and Figure 4 shown, the through-hole 21 extends in a straight line direction.
[0040] In a specific embodiment, as Figures 1 to 5 shown, the through-hole 21 passes through the axis of the rotor 2. The structures at both ends of the sliding member 3 are symmetric with respect to the center of the sliding member 3, so that the frictional force generated between any one of the two ends of the sliding member 3 and the side wall of the through-hole 11 enables the rotor 2 to rotate in the first rotation direction. When the rotor 2 is about to drive the sliding member 3 to rotate in the second rotation direction, the frictional force generated between the rotor 2 and the side wall of the through-hole 11 enables the rotor 2 to remain stationary.
[0041] AsFigure 1 and Figure 3 As shown in Figure 3 , on the radial cross-section of the through hole 11, the end parts at both ends of the sliding member 3 respectively have a first end point 33 and a second end point 34. The first end point 33 and the second end point 34 are in contact with the inner side wall of the through hole 11, and the connection line of the first end point 33 and the second end point 34 passes through the axis of the rotor 2. The sides of the first end point 33 and the second end point 34 facing the first rotation direction are respectively a first resistance structure 31, and the sides of the first end point 33 and the second end point 34 facing away from the first rotation direction are respectively a second resistance structure 32. In order to make the frictional force generated by the first resistance structure 31 and the side wall of the through hole 11 much smaller than the frictional force generated by the second resistance structure 32 and the side wall of the through hole 11, the degree of descent of the first resistance structure 31 in the direction of the first rotation is less than the degree of descent of the second resistance structure 32 in the direction away from the first rotation.
[0042] Furthermore, in a feasible implementation manner, as Figure 3 shown in Figure 3 , the second edge line 321 connected to the first end point 33 or the second end point 34 in the second resistance structure 32 is located on the straight line formed by the first end point 33 and the second end point 34. Through the above structure, the frictional force generated by the second resistance structure 32 and the side wall of the through hole 11 can keep the rotor 2 stationary when the rotor 2 is about to drive the sliding member 3 to rotate in the second rotation direction.
[0043] Even further, as Figure 1 、 Figures 3 to 5 shown in Figure 1 and Figures 3 to 5 , the second resistance structure 32 is in a stepped shape. Through the above structure, it can be avoided that during the process of the rotor 2 driving the sliding member 3 to rotate in the first rotation direction, the second resistance structure 32 will interfere with the side wall of the through hole 11, thereby affecting the rotation of the sliding member 3 in the first rotation direction.
[0044] On the radial cross-section of the through hole 11, as Figure 1 shown in Figure 1 , the curve formed by the inner side wall of the through hole 11 includes a plurality of sub-curves 111. The plurality of sub-curves 111 are circumferentially distributed around the axis of the through hole 11, and adjacent sub-curves 111 are connected to each other. That is to say, the ends of adjacent sub-curves 111 are connected to each other, so that during the rotation of the rotor 2, the sliding member 3 is driven to rotate. The first resistance structure 31 of the sliding member 3 adheres to the sub-curve 111 of the inner side wall of the through hole 11, slides from one sub-curve 111 to another adjacent sub-curve 111, and then slides to the next adjacent sub-curve 111, and so on, continuously circulating in a loop.
[0045] As feasible, as Figure 1 and Figure 5As shown, each sub-curve 111 includes two connected equiangular spirals, and the two equiangular spirals are symmetric with respect to the line connecting the connection point of the two and the axis of the through-hole 11. The number of curves is odd. The above structure can not only ensure that within the radial cross-section of the through-hole 11, the distance between the two intersection points of any straight line passing through the axis of the through-hole 11 and the inner side wall of the through-hole 11 is equal; at the same time, when the rotor 2 drives the sliding member 3 to rotate in the first rotation direction, due to the action of the sub-curve 111 in the form of an equiangular spiral, the sliding member 3 slides back and forth in the through-hole 21. When promoting the sliding member 3 to slide back and forth in the through-hole 21, the side wall of the through-hole 11 needs to apply pressure to the sliding member 3 so that the sliding member 3 can slide. Once the side wall of the through-hole 11 applies pressure to the sliding member 3, a frictional force will be generated between the first resistance structure 31 and the side wall of the through-hole 11. Since the frictional force generated between the first resistance structure 31 and the side wall of the through-hole 11 is small, relative sliding can occur between the first resistance structure 31 and the side wall of the through-hole 11, and the rotor 2 can continue to rotate in the first rotation direction. When the rotor 2 needs to drive the sliding member 3 to rotate in the second rotation direction, similarly, due to the action of the sub-curve 111 in the form of an equiangular spiral, the sliding member 3 will tend to slide in the through-hole 21. The side wall of the through-hole 11 needs to apply pressure to the sliding member 3 so that the sliding member 3 has a tendency to slide. Once the side wall of the through-hole 11 applies pressure to the sliding member 3, a frictional force will be generated between the second resistance structure 32 and the side wall of the through-hole 11. Since the frictional force generated between the second resistance structure 32 and the side wall of the through-hole 11 is large, the rotor 2 is further prompted to remain stationary and unable to rotate in the second rotation direction, ultimately achieving the effect of self-locking.
[0046] In a specific embodiment, as Figure 1 and Figure 5 shown, the number of sub-curves 111 can be three, and the three sub-curves 111 are circumferentially distributed around the axis of the through-hole 11.
[0047] Further, in the direction towards the first rotation direction, as Figure 3As shown, the degree of descent of the first edge line 311 connected to the first end point 33 or the second end point 34 in the first resistance structure 31 is greater than the degree of descent of the logarithmic spiral at the corresponding position of the first end point 33 or the second end point 34. The first edge line 311 is connected to the side wall of the sliding member 3. Through the above structure, it can be ensured that during the process of the rotor 2 driving the sliding member 3 to rotate in the first rotation direction, other areas of the first resistance structure 31 except the first end point 33 or the second end point 34 will not interfere with the side wall of the through hole 11, so that the sliding member 3 can always rotate smoothly in the first rotation direction, avoiding the formation of other contact points due to the interference between other areas of the first resistance structure 31 except the first end point 33 or the second end point 34 and the side wall of the through hole 11. These other contact points may generate a large frictional force with the side wall of the through hole 11, thereby preventing the sliding member 3 from rotating in the first rotation direction as patented, and causing the sliding member 3 to be in a stationary state.
[0048] In the ratchet mechanism of the present application, a through hole 11 can be opened in the stator 1, and a rotatable rotor 2 is arranged in the through hole 11. At the same time, the rotor 2 is provided with a through hole 21, and a slidable sliding member 3 is inserted through the through hole 21, and both ends of the sliding member 3 can abut against the side wall of the through hole 11. Since at least one end of the sliding member 3 has a first resistance structure 31 on the side facing the first rotation direction, and both ends of the sliding member 3 have a second resistance structure 32 on the sides facing away from the first rotation direction, the structural differences between the first resistance structure 31 and the second resistance structure 32 result in completely different frictional forces generated between them and the side wall of the through hole 11. The frictional force generated between the first resistance structure 31 and the side wall of the through hole 11 enables relative sliding between the sliding member 3 and the stator 1 so that the rotor 2 can rotate in the first rotation direction, and the frictional force generated between the second resistance structure 32 and the side wall of the through hole 11 prevents relative sliding between the sliding member 3 and the stator 1 to generate self-locking, so that the rotor 2 remains stationary. Eventually, the rotor 2 in the ratchet mechanism can only rotate in one direction, and there is no elastic member in the entire ratchet mechanism, which can effectively improve the service life of the ratchet mechanism in a harsh environment.
[0049] All articles and references disclosed, including patent applications and publications, are incorporated herein by reference for various purposes. The term "consisting essentially of" describing a combination shall include the identified elements, ingredients, components or steps and other elements, ingredients, components or steps that do not materially affect the basic novel features of the combination. The use of the terms "comprising" or "including" to describe the combinations of elements, ingredients, components or steps herein also contemplates embodiments consisting essentially of these elements, ingredients, components or steps. By using the term "may" herein, it is intended that any of the attributes described as "may" include are optional. A plurality of elements, ingredients, components or steps can be provided by a single integrated element, ingredient, component or step. Alternatively, a single integrated element, ingredient, component or step can be divided into separate multiple elements, ingredients, components or steps. The disclosure of "a" or "an" to describe an element, ingredient, component or step does not mean to exclude other elements, ingredients, components or steps.
[0050] Each embodiment in this specification is described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same or similar parts among the various embodiments, reference can be made to each other. The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly. It should not be used to limit the protection scope of the present invention. All equivalent changes or modifications made according to the spirit and essence of the present invention should be covered within the protection scope of the present invention.
Claims
1. A ratchet mechanism, characterized in that, The ratchet mechanism includes: A stator extending along an axis, the stator having a through hole; A rotor disposed in the through hole, the rotor having a through hole extending in a direction perpendicular to the axis; A sliding member slidably disposed in the through hole, both ends of the sliding member being capable of abutting against the side wall of the through hole. At least one end of the sliding member has a first resistance structure on a side facing a first rotation direction, and both ends of the sliding member have second resistance structures on sides facing away from the first rotation direction. When the rotor is about to drive the sliding member to rotate in the first rotation direction, the frictional force generated between the first resistance structure and the side wall of the through hole enables the rotor to rotate in the first rotation direction; when the rotor is about to drive the sliding member to rotate in a second rotation direction, the frictional force generated between the second resistance structure and the side wall of the through hole enables the rotor to remain stationary; the first rotation direction is the opposite direction of the second rotation direction.
2. The ratchet mechanism according to claim 1, wherein, The axis of the through hole and the axis of the rotor are the same axis.
3. The ratchet mechanism according to claim 1, characterized in that, In the radial cross-section of the through hole, the distance between two intersection points of any straight line passing through the axis of the through hole and the inner side wall of the through hole is equal.
4. The ratchet mechanism according to claim 1, characterized in that, The through hole extends in a straight line direction and passes through the axis of the rotor.
5. The ratchet mechanism according to claim 4, characterized in that, The structures at both ends of the sliding member are symmetric with respect to the center of the sliding member.
6. The ratchet mechanism according to claim 5, characterized in that, In the radial cross-section of the through hole, the end portions of both ends of the sliding member respectively have a first end point and a second end point, the first end point and the second end point abut against the inner side wall of the through hole, and the connection line between the first end point and the second end point passes through the axis of the rotor; The sides of the first end point and the second end point facing the first rotation direction are respectively the first resistance structures, and the sides of the first end point and the second end point facing away from the first rotation direction are respectively the second resistance structures; the degree of descent of the first resistance structure in the direction facing the first rotation direction is less than the degree of descent of the second resistance structure in the direction facing away from the first rotation direction.
7. The ratchet mechanism according to claim 6, wherein, The second edge line of the second resistance structure connected to the first end point or the second end point is located on the straight line formed by the first end point and the second end point.
8. The ratchet mechanism according to claim 7, wherein, The second resistance structure is stepped.
9. The ratchet mechanism according to claim 6, characterized in that, In the radial cross-section of the through hole, the curve formed by the inner side wall of the through hole includes a plurality of sub-curves, and the plurality of sub-curves are distributed in a circular pattern around the axis of the through hole, and adjacent sub-curves are connected; each sub-curve includes two connected equiangular spirals, and the two equiangular spirals are symmetric with respect to the connection line between their connection point and the axis of the through hole; the number of the curves is odd.
10. The ratchet mechanism according to claim 9, characterized in that, In the direction facing the first rotation direction, the degree of descent of the first edge line of the first resistance structure connected to the first end point or the second end point is greater than the degree of descent of the equiangular spiral at the corresponding position of the first end point or the second end point; The first edge line is connected to the side wall of the sliding member.
Citation Information
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