Limiting structure of gear end face
By adopting an elastic limit structure in the gear limit structure, and using the cooperation of the pressing wheel, pushing wheel and spring, the problems of gears prone to skew and wear in the prior art are solved, achieving a more stable limit effect and a longer service life.
Patent Information
- Application Number
- CN202421819313.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-30
- Publication Date
- 2025-04-18
- Estimated Expiration
- 2034-07-30
AI Technical Summary
The existing gear limiting structures are prone to skew due to manufacturing and assembly errors, and the fixing planes are inappropriately conflicted, which are prone to excessive looseness or too tightness, and are severely worn when facing hard.
The elastic limit structure is adopted, including the shell, spindle, gear and elastic limit structure. Through the coordination of the pressing wheel, the pushing wheel and the spring, the rotational coordination between the spherical surface and the concave surface is used to move the pressing wheel relative to the pushing wheel, and the elastic resistance limit of the gear end surface is achieved.
Effectively eliminate manufacturing and assembly errors, avoid gear skew, improve the stability of the limit structure, reduce wear, and improve the service life of the gear.
Smart Images
Figure CN222772642U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of automobile gears, in particular to a limiting structure for a gear end face. Background Art
[0002] At present, the gears are mounted on the main shaft to rotate. Both end faces of the gear axial direction are set with fixed planes to achieve limit, preventing the gear from moving on the main shaft. This limit structure is fixed. Due to the manufacturing and assembly errors between the gear end face and the fixed plane, when the gear end face is tilted during processing, there is a gap between it and the fixed plane, which makes the gear easy to tilt, or the fixed plane contacts the gear and becomes too loose or too tight; and the gear end face and the fixed plane are generally hard against each other, and are easy to wear during use. Utility Model Content
[0003] Purpose of the utility model: In order to overcome the defects of the prior art, the utility model provides a limiting structure for the end face of a gear, and utilizes the new limiting structure to perform elastic resistance limiting on the end face of the gear.
[0004] The technical solution of the utility model is: a limiting structure for the end face of a gear, comprising a shell, a main shaft and a gear sleeved on the main shaft are arranged in the shell, one end face of the gear is supported by an elastic limiting structure, the elastic limiting structure has a pressure wheel, a push wheel and a spring, the spring is used to drive the push wheel to press the pressure wheel against the end face of the gear, a spherical surface and a concave surface are respectively arranged on the opposite sides of the push wheel and the pressure wheel, and the pressure wheel moves relative to the push wheel through the rotational cooperation of the spherical surface and the concave surface.
[0005] By adopting the above technical solution, a new limiting structure is used to perform elastic resistance limiting on the gear end face. When the gear end face is tilted during processing and there is a gap with the pressure wheel, the pressure wheel can move relative to the push wheel through the rotational cooperation of the spherical surface and the concave surface. After the tilt of the pressure wheel is adjusted, it is easy to form a fit and resistance with the inclined end face of the gear, which can effectively eliminate manufacturing and assembly errors.
[0006] Preferably, the main shaft is also provided with a pressure wheel and a push wheel, the push wheel is circumferentially limited in the housing and can slide axially on the main shaft; the diameter of the through-shaft hole of the pressure wheel is larger than the outer diameter of the main shaft, so that the pressure wheel is movably provided on the main shaft. The pressure wheel and the push wheel are also installed on the main shaft together, which is convenient for installation.
[0007] Preferably, the spherical surface is located on the front of the push wheel, and the concave surface is located on the back of the pressing wheel. The front of the pressing wheel is used to abut against the gear end face, and the pressing wheel moves on the spherical surface of the push wheel. Of course, the spherical surface can be located on the back of the pressing wheel and the concave surface can be located on the front of the push wheel.
[0008] Preferably, the other end face of the gear is also supported by an elastic limiting structure, or supported by a fixed plane on the housing. The two elastic limiting structures have a high elastic supporting effect on the two ends of the gear.
[0009] Preferably, the shell includes an installation space formed by an outer shell and a side cover, the outer shell and the side cover are detachably connected, one end of the main shaft is mounted on the outer shell, and the other end is mounted on the side cover, and the gear and the elastic limiting structure are both located in the installation space.
[0010] Preferably, the push wheel of the elastic limiting structure is circumferentially fixed on the side cover, the spring is pressed between the side cover and the back of the push wheel, the pressing wheel is pressed against one end face of the gear, and the fixed plane on the outer shell is pressed against the other end face of the gear.
[0011] Preferably, the push wheel is installed in the insertion cavity on the side cover, and the push wheel and the insertion cavity are circumferentially fixed through the cooperation of a positioning block and a notch. There is a concave cavity on the back of the push wheel, and the spring is installed in the concave cavity and is disposed between the bottom wall of the concave cavity and the inner surface of the side cover.
[0012] Preferably, the housing and the side cover are also positioned by plugging together an insert block and a socket, and are fixed by screws. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a structural diagram of a specific embodiment of the utility model;
[0014] Figure 2 It is an exploded view of a specific embodiment of the utility model;
[0015] Figure 3 It is an internal structure diagram of a specific embodiment of the utility model;
[0016] Figure 4 It is a structural diagram of the elastic limiting structure in a specific embodiment of the utility model;
[0017] Figure 5 This is an internal structural diagram of the elastic limiting structure in a specific embodiment of the utility model;
[0018] Figure 6 This is a structural diagram of the pressure wheel in a specific embodiment of the utility model;
[0019] Figure 7 This is one of the structural diagrams of the push wheel in the specific embodiment of the utility model;
[0020] Figure 8 This is the second structural diagram of the push wheel in the specific embodiment of the utility model;
[0021] Fig. 9 This is a structural diagram of a side cover in a specific embodiment of the utility model;
[0022] Fig.10 It is a structural diagram of the shell in a specific embodiment of the utility model.
[0023] In the figure: shell 1, fixing plane 1a, outer shell 11, side cover 12, insertion cavity 121, installation space 1b, main shaft 2, gear 3, elastic limiting structure 4, pressing wheel 41, through-shaft hole 411, push wheel 42, concave cavity 421, spring 43, spherical surface A, concave surface B, positioning block 51, notch 52, insertion block 61, socket 62. DETAILED DESCRIPTION
[0024] The technical scheme in this embodiment will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments in 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.
[0025] like Figure 1-10 As shown, a limiting structure of a gear end face of the utility model comprises a housing 1, a main shaft 2 and a gear 3 sleeved on the main shaft 2 are arranged in the housing 1, one end face of the gear 3 is abutted by an elastic limiting structure 4, and the other end face of the gear 3 is also abutted by an elastic limiting structure, or abutted by a fixed plane 1a on the housing 1, the elastic limiting structure 4 has a pressing wheel 41, a top pushing wheel 42 and a spring 43, the spring 43 is used to drive the top pushing wheel 42 to push the pressing wheel 41 against the end face of the gear 3, the top pushing wheel 42 and the pressing wheel 41 are respectively provided with a spherical surface A and a concave surface B on the opposite sides, and the spherical surface A and the concave surface B are rotated by the rotation of the spherical surface A and the concave surface B. The pressing wheel 41 is dynamically matched so that the pressing wheel 41 can move relative to the pushing wheel 42; the main shaft 2 is also penetrated by a pressing wheel 41 and a pushing wheel 42, the pushing wheel 42 is circumferentially limited in the shell 1, and can slide axially on the main shaft 2; the aperture of the through-shaft hole 411 of the pressing wheel 41 is larger than the outer diameter of the main shaft 2, so that the pressing wheel 41 is movably arranged on the main shaft 2; the spherical surface A is located on the front face of the pushing wheel 42, and the concave surface B is located on the back face of the pressing wheel 41, and the front face of the pressing wheel 41 is used to press against the end face of the gear 3, and the pressing wheel 41 can move on the spherical surface A of the pushing wheel 42. Of course, the spherical surface can be located on the back face of the pressing wheel and the concave surface can be located on the front face of the pushing wheel.
[0026] Specifically, the housing 1 includes an installation space 1b formed by an outer shell 11 and a side cover 12. The outer shell 11 and the side cover 12 are detachably connected. The outer shell 11 and the side cover 12 are also plugged and positioned by an insert block 61 and a socket 62, and are fixed by screws. Insert blocks 61 are integrally provided on both symmetrical sides of the outer shell 11 or the side cover 12. The insert block 61 is also a "V"-shaped insert block, which is convenient for inserting into the socket 62. Of course, the outer shell 11 and the side cover 12 can also be detachably connected through a snap-on structure. One end of the main shaft 2 is installed on the outer shell 11, and the other end is installed on the side cover 12. The gear 3 and the elastic limiting structure 4 are both located in the installation space 1b; The push wheel 42 of the elastic limiting structure 4 is circumferentially fixed on the side cover 12, and the spring 43 is pressed between the side cover and the back of the push wheel 42. The pressing wheel 41 is pressed against one end face of the gear 3, and the fixed plane 1a on the shell 11 is pressed against the other end face of the gear 3; the push wheel 42 is installed in the insertion cavity 121 on the side cover 12, and the push wheel 42 and the insertion cavity 121 are circumferentially fixed through the positioning block 51 and the notch 52. The positioning block is integrally arranged on the outer periphery of the push wheel 42 and the inner wall of the insertion cavity 121. The back of the push wheel 42 has a concave cavity 421. The spring 43 is installed in the concave cavity 421 and pressed between the bottom wall of the concave cavity 421 and the inner surface of the side cover 12.
[0027] During installation, the gear 3 and the elastic limiting structure 4 are installed on the main shaft 2, one end of the main shaft 2 is installed on the outer shell 11, and the other end is installed on the side cover 12. Specifically, the push wheel 42 is axially slidably sleeved on the main shaft 2 and inserted into the insertion cavity 121 on the side cover 12. The positioning block 51 and the notch 52 cooperate to achieve circumferential fixation of the push wheel 42. The spring 43 is installed in the concave cavity 421 on the back of the push wheel; the pressing wheel 41 is movably sleeved on the main shaft 2 and presses between the push wheel 42 and one end face of the gear 3. Then the outer shell 11 and the side cover 12 are fixed with screws, which will make the fixed plane 1a on the outer shell 11 press against the other end face of the gear 3.
[0028] The utility model utilizes a new limiting structure to perform elastic resistance limiting on the gear end face. When the gear end face is tilted during processing and there is a gap with the pressure wheel, the pressure wheel can move relative to the push wheel through the rotational cooperation between the spherical surface and the concave surface. After adjustment, the pressure wheel is easy to form a fitting resistance with the inclined end face of the gear, which can effectively eliminate manufacturing and assembly errors.
[0029] It should be noted that in the description of the present utility model, unless otherwise clearly specified and limited, the terms "install", "connect", "couple", "connect", and "fix" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
Claims
1. A gear end surface limiting structure, comprising a housing (1), a main shaft (2) and a gear (3) sleeved on the main shaft (2) arranged in the housing (1), characterized in that: One end surface of the gear (3) is supported by an elastic limiting structure (4), and the elastic limiting structure (4) comprises a pressure wheel (41), a push wheel (42) and a spring (43), and the spring (43) is used to drive the push wheel (42) to push the pressure wheel (41) against the end surface of the gear (3), and a spherical surface (A) and a concave surface (B) are respectively provided on opposite sides of the push wheel (42) and the pressure wheel (41), and the pressure wheel (41) moves relative to the push wheel (42) through the rotational cooperation of the spherical surface (A) and the concave surface (B).
2. The limiting structure of the gear end surface according to claim 1, characterized in that: The main shaft (2) is also provided with a pressure wheel (41) and a push wheel (42); the push wheel (42) is circumferentially limited in the housing (1) and can slide axially on the main shaft (2); the diameter of the through-shaft hole (411) of the pressure wheel (41) is larger than the outer diameter of the main shaft (2), so that the pressure wheel (41) is movably provided on the main shaft (2).
3. The limiting structure of the gear end surface according to claim 1, characterized in that: The spherical surface (A) is located on the front side of the push wheel (42), and the concave surface (B) is located on the back side of the pressure wheel (41). The front side of the pressure wheel (41) is used to abut against the end face of the gear (3), and the pressure wheel (41) moves on the spherical surface (A) of the push wheel (42).
4. A gear end surface limiting structure according to claim 1, 2 or 3, characterized in that: The other end surface of the gear (3) is also abutted by an elastic limiting structure (4) or by a fixed plane (1a) on the housing (1).
5. A gear end surface limiting structure according to claim 1, 2 or 3, characterized in that: The housing (1) comprises an installation space (1b) formed by an outer shell (11) and a side cover (12); the outer shell (11) and the side cover (12) are detachably connected; one end of the main shaft (2) is mounted on the outer shell (11) and the other end is mounted on the side cover (12); the gear (3) and the elastic limiting structure (4) are both located in the installation space (1b).
6. A gear end surface limiting structure according to claim 5, characterized in that: The push wheel (42) of the elastic limiting structure (4) is circumferentially fixed on the side cover (12), the spring (43) is pressed between the side cover and the back of the push wheel (42), the pressing wheel (41) is pressed against one end face of the gear (3), and the fixed plane (1a) on the housing (11) is pressed against the other end face of the gear (3).
7. The limiting structure of the gear end surface according to claim 6, characterized in that: The push wheel (42) is inserted into the insertion cavity (121) on the side cover (12), and the push wheel (42) and the insertion cavity (121) are circumferentially fixed via the cooperation of a positioning block (51) and a notch (52). A concave cavity (421) is provided on the back of the push wheel (42), and the spring (43) is inserted into the concave cavity (421) and is disposed between the bottom wall of the concave cavity (421) and the inner surface of the side cover (12).
8. The gear end surface limiting structure according to claim 5, characterized in that: The housing (11) and the side cover (12) are also plugged and positioned via the plug block (61) and the socket (62), and are fixed by screws.