CN216589676U - One-way ratchet structure - Google Patents
One-way ratchet structure Download PDFInfo
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- CN216589676U CN216589676U CN202122659725.XU CN202122659725U CN216589676U CN 216589676 U CN216589676 U CN 216589676U CN 202122659725 U CN202122659725 U CN 202122659725U CN 216589676 U CN216589676 U CN 216589676U
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Abstract
The utility model discloses a one-way ratchet structure, comprising: the utility model provides a unidirectional ratchet structure, which comprises an inner rotating shaft, an outer rotating ring coaxially sleeved outside the inner rotating shaft and a rolling body arranged between the inner rotating shaft and the outer rotating ring, wherein the end surface of the inner rotating shaft facing the outer rotating ring is provided with a positioning boss, the rolling body is of an annular structure formed by a plurality of positioning balls and special-shaped balls surrounding the outer edge of the positioning boss, the periphery of the rolling body is sleeved with an elastic positioning ring, the middle part of the outer ring of the special-shaped balls is provided with a positioning groove, the special-shaped balls are provided with a first flange, a second flange and a third flange, a protruding limit part is formed at the joint of the first flange and the second flange, when the rolling body rotates in a first direction, the third flange is attached to the inner rotating shaft under the action of the elastic positioning ring, so that the rolling body and the inner rotating shaft form synchronous linkage, and when the rolling body rotates in a second direction, the protruding limit part is tightly clamped with the side wall of the inner rotating ring of the outer rotating ring so as to limit the rotation of the inner rotating shaft, simple structure, spare part is few, and stability is high, and the volume production is with low costs.
Description
Technical Field
The utility model relates to the field of ratchet structures, in particular to a one-way ratchet structure.
Background
The unidirectional ratchet structure mechanism is mainly used for realizing the effects of unidirectional rotation and reverse braking, and the unidirectional ratchet structure in the prior art has the following defects: the assembly structure is relatively complicated, the assembly is tedious, and in the use, the structure lacks stability.
SUMMERY OF THE UTILITY MODEL
The utility model mainly solves the technical problem of providing a one-way ratchet structure which has the advantages of fewer parts, simple and stable structure, small friction coefficient, long service life and greatly reduced production cost compared with the existing ratchet structure.
In order to solve the technical problems, the utility model adopts a technical scheme that: provided is a one-way ratchet structure, including: the rolling element comprises an inner rotating shaft, an outer rotating ring coaxially sleeved outside the inner rotating shaft and a rolling element arranged between the inner rotating shaft and the outer rotating ring, wherein a positioning boss is arranged on the end face of the inner rotating shaft facing the outer rotating ring, the rolling element is of an annular structure formed by a plurality of positioning balls and special-shaped balls surrounding the outer edge of the positioning boss, an elastic positioning ring is sleeved on the periphery of the rolling element, a positioning groove is arranged in the middle of the outer ring of the special-shaped balls, the elastic positioning ring is clamped in the positioning groove, the special-shaped balls are provided with a first flange, a second flange and a third flange, a protruding limiting part is formed at the joint of the first flange and the second flange, the third flange is in contact with the outer edge of the inner rotating shaft, the rolling element can be stirred to rotate when the inner rotating shaft rotates, and when the rolling element rotates in the first direction, the third flange is attached to the inner rotating shaft under the action of the elastic positioning ring, the rolling body and the inner rotating shaft form synchronous linkage, and when the rolling body rotates towards the second direction, the protruding limiting part and the inner ring side wall of the outer rotating ring are clamped tightly to limit the rotation of the inner rotating shaft.
In a preferred embodiment of the present invention, the first direction is opposite to the second direction.
In a preferred embodiment of the present invention, the bottom surface of the positioning groove has a first position-limiting surface and a second position-limiting surface, and an included angle is formed between the first position-limiting surface and the second position-limiting surface.
In a preferred embodiment of the utility model, the included angle is obtuse.
In a preferred embodiment of the utility model, when the rolling body rotates in the first direction, the elastic locating ring is contacted with a first limiting surface of the bottom surface of the locating groove; when the rolling body has a turnover in the second direction, the elastic locating ring is in contact with the second limiting surface on the bottom surface of the locating groove.
In a preferred embodiment of the present invention, the elastic positioning ring is a tension spring.
In a preferred embodiment of the present invention, the positioning balls and the special-shaped balls are arranged at intervals, the positioning balls include four positioning balls and are equally distributed around the positioning boss, and a plurality of special-shaped balls are arranged between two adjacent positioning balls.
In a preferred embodiment of the present invention, the outer ring of the positioning ball is provided with a rolling groove for placing the elastic positioning ring.
In a preferred embodiment of the present invention, the rolling groove is an annular groove formed along the outer ring of the positioning ball.
In a preferred embodiment of the present invention, the rotation direction of the inner rotary shaft is opposite to the revolving direction of the rolling elements.
The utility model has the beneficial effects that: compared with the existing ratchet structure, the ratchet structure has the advantages of fewer parts, simple and stable structure, small friction coefficient, long service life and greatly reduced production cost.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
FIG. 1 is an exploded view of a one-way ratchet arrangement of the present invention;
FIG. 2 is a schematic view of the installation of a one-way ratchet structure of the present invention;
FIG. 3 is a front view of a one-way ratchet structure according to the present invention, wherein the rolling elements are in a first direction of rotation;
FIG. 4 is a front view of the rolling elements in a second direction of their circulation in a one-way ratchet structure according to the present invention;
FIG. 5 is a schematic structural diagram of a shaped ball in a one-way ratchet structure according to the present invention;
FIG. 6 is a side view of a shaped ball in a one-way ratchet configuration of the present invention;
FIG. 7 is a schematic view of a positioning ball of a one-way ratchet structure according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, an embodiment of the utility model is a unidirectional ratchet structure, including: the rolling bearing comprises an inner rotating shaft 1, an outer rotating ring 2 coaxially sleeved outside the inner rotating shaft, and a rolling body 3 arranged between the inner rotating shaft and the outer rotating ring, wherein a positioning boss 11 is arranged on the end surface of the inner rotating shaft facing the outer rotating ring, the rolling body is of an annular structure formed by a plurality of positioning balls 31 and special-shaped balls 32 surrounding the outer edge of the positioning boss, an elastic positioning ring 4 is sleeved on the periphery of the rolling body, specifically, the elastic positioning ring is a tension spring, a positioning groove 321 is arranged at the middle position of the outer ring of the special-shaped balls, the elastic positioning ring is clamped in the positioning groove to play a certain limiting and fixing role for the whole rolling body, the special-shaped balls are provided with a first flange 322, a second flange 323 and a third flange 324 formed on the back of the special-shaped balls at two sides of the positioning groove, a raised limiting part 325 is formed at the joint of the first flange 323 and the second flange, when the rolling body is installed, the rolling body is placed on the periphery of the positioning boss of the inner rotating shaft and is limited by the tension spring, at this moment, the external diameter that protruding spacing portion formed is greater than the internal diameter of outer rotating ring, and the effect of accessible extension spring makes the rotatory slight angle back of dysmorphism ball (rotate promptly to the external diameter that protruding spacing portion formed is less than the internal diameter of outer rotating ring after), with the rolling element installation restriction between outer rotating ring and interior internal rotation axle, the third flange at the dysmorphism ball back contacts with the outward flange of interior pivot, and can drive the rolling element when the internal rotation axle rotation carries out the turnover motion.
Referring to fig. 3-4, when the rolling element rotates in the first direction, the third flange is engaged with the inner rotating shaft under the action of the elastic positioning ring, so that the rolling element and the inner rotating shaft form a synchronous linkage, when the rolling element rotates in the second direction, the protruding limiting portion is clamped with the inner ring sidewall of the outer rotating ring to limit the rotation of the inner rotating shaft, the first direction is opposite to the second direction, and when the first direction is clockwise rotation, the second direction is counterclockwise rotation; when the first direction is counterclockwise rotation, the second direction is clockwise rotation.
Specifically, location ball and special-shaped ball looks interval set up, and the location ball includes four and equally divide the setting around the location boss, is provided with a plurality of special-shaped balls between the two adjacent location balls, as shown in fig. 7, sets up the annular rolling groove 311 of placing the elastic locating circle on the outer lane of location ball, utilizes four location balls of 360 degrees equidivisions this moment to make the internal rotation axle form the rotation that rolls in the outer circle of circling to reduce frictional force.
Referring to fig. 5-6, the bottom surface of the positioning groove has a first limiting surface 326 and a second limiting surface 327, an included angle is formed between the first limiting surface and the second limiting surface, the included angle is obtuse, based on the above structure, the rotation direction of the inner rotating shaft is opposite to the revolving direction of the rolling element, the following description takes the first direction as a clockwise rotation direction as an example, when the inner rotating shaft rotates counterclockwise to drive the rolling element to revolve clockwise, the elastic positioning ring contacts with the first limiting surface on the bottom surface of the positioning groove, the first flange and the second flange of the special-shaped ball are suspended in the outer rotating ring, the third flange is attached to the inner rotating shaft under the action of the elastic positioning ring, so that the rolling element and the inner rotating shaft form synchronous linkage, at this time, the four positioning balls enable the inner rotating shaft to form rolling rotation in the outer rotating ring, so that the friction resistance can be reduced by about 30%, when the rolling element revolves counterclockwise under the drive of the inner rotating shaft, the elastic positioning ring is in contact with the second limiting surface of the bottom surface of the positioning groove, at the moment, the protruding limiting part and the inner ring side wall of the outer rotating ring are clamped to limit the rotation of the inner rotating shaft, the structure is simple, the stability is good, the installation direction of the special-shaped ball can be confirmed according to the use requirement, the switching of the unidirectional rotation or the clamping of the inner rotating shaft can be realized, the smooth rotation state or the clamping state can be freely switched when the inner rotating shaft rotates clockwise or anticlockwise, and the operation is simple and convenient.
In conclusion, the one-way ratchet structure provided by the utility model has the advantages that the structure is simple, the stability is good, when the third flange of the special-shaped ball is attached to the inner rotating shaft under the action of the elastic locating ring, the rolling body and the inner rotating shaft can form synchronous linkage, the rotation is smooth, the friction resistance is reduced by about 30%, when the convex limiting part of the special-shaped ball is tightly clamped with the side wall of the inner ring of the outer rotating ring, the rotation of the inner rotating shaft can be limited, and the structural stability is greatly improved compared with that of the existing ratchet one-way device.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A one-way ratchet structure comprising: the rolling element comprises an inner rotating shaft, an outer rotating ring coaxially sleeved outside the inner rotating shaft and a rolling body arranged between the inner rotating shaft and the outer rotating ring, and is characterized in that a positioning boss is arranged on the end face of the inner rotating shaft facing the outer rotating ring, the rolling body is of an annular structure formed by a plurality of positioning balls and special-shaped balls surrounding the outer edge of the positioning boss, an elastic positioning ring is sleeved on the periphery of the rolling body, a positioning groove is formed in the middle of the outer ring of the special-shaped balls, the elastic positioning ring is clamped in the positioning groove, the special-shaped balls are provided with a first flange, a second flange and a third flange, a protruding limiting part is formed at the joint of the first flange and the second flange, the third flange is in contact with the outer edge of the inner rotating shaft, the rolling body can be shifted to rotate when the inner rotating shaft rotates, and when the rolling body rotates in the first direction, the third flange is attached to the inner rotating shaft under the action of the elastic positioning ring, the rolling body and the inner rotating shaft form synchronous linkage, and when the rolling body rotates towards the second direction, the protruding limiting part and the inner ring side wall of the outer rotating ring are clamped tightly to limit the rotation of the inner rotating shaft.
2. The unidirectional ratchet structure of claim 1, wherein the first direction is opposite to the second direction of rotation.
3. The unidirectional ratchet structure of claim 1, wherein the bottom surface of the positioning groove has a first limiting surface and a second limiting surface, and an included angle is formed between the first limiting surface and the second limiting surface.
4. The one-way ratchet structure of claim 3, wherein said included angle is obtuse.
5. The one-way ratchet structure according to claim 3, wherein when the rolling bodies revolve in the first direction, the elastic locating ring is in contact with a first limiting surface on the bottom surface of the locating groove; when the rolling body has a turnover in the second direction, the elastic locating ring is in contact with the second limiting surface on the bottom surface of the locating groove.
6. The one-way ratchet structure according to claim 1, wherein the elastic positioning ring is a tension spring.
7. The unidirectional ratchet structure of claim 1, wherein the positioning balls are spaced apart from the shaped balls, the positioning balls comprise four positioning balls and are equally spaced around the positioning boss, and a plurality of shaped balls are disposed between two adjacent positioning balls.
8. The one-way ratchet structure according to claim 7, wherein the outer ring of the positioning ball is provided with a rolling groove for placing the elastic positioning ring.
9. The unidirectional ratchet structure of claim 8, wherein the rolling groove is an annular groove formed along the outer race of the positioning ball.
10. The unidirectional ratchet structure of claim 1, wherein the rotation direction of the inner rotating shaft is opposite to the revolving direction of the rolling bodies.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122659725.XU CN216589676U (en) | 2021-11-02 | 2021-11-02 | One-way ratchet structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122659725.XU CN216589676U (en) | 2021-11-02 | 2021-11-02 | One-way ratchet structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216589676U true CN216589676U (en) | 2022-05-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122659725.XU Active CN216589676U (en) | 2021-11-02 | 2021-11-02 | One-way ratchet structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216589676U (en) |
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2021
- 2021-11-02 CN CN202122659725.XU patent/CN216589676U/en active Active
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