Clamping structure with elastic piece
By using a spring-loaded clamping structure, combined with the interference fit of the plug body and the clamping force of the spring, the problem of insufficient holding force of traditional T-shaped plugs is solved, achieving efficient prevention of loosening and convenient disassembly, reducing disassembly damage and replacement costs.
Patent Information
- Application Number
- CN202423240661.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-12-27
AI Technical Summary
In the existing technology, traditional T-shaped plugs have insufficient retaining force due to interference fit, and their manufacturing cycle is long and costly, making it difficult to meet axial positioning requirements under the constraints of economy and mounting hole depth.
It adopts a spring-loaded clamping structure, which provides additional retaining force through the interference fit between the plug and the mounting hole and the clamping force of the spring in the clamping groove. The end cap covers the bushing to restrict axial movement. The elasticity of the spring and the hook design make it easy to disassemble, reducing disassembly damage.
It achieves efficient prevention of loosening under the constraints of economy and mounting hole depth, reduces disassembly damage, increases the service life of T-plugs, and saves replacement costs.
Smart Images
Figure CN223594719U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of rocker bearing, especially a clamping structure with elastic sheet. BACKGROUND
[0002] The rocker needs to be axially positioned, and in the past, a solid threaded T-shaped plug with high strength is used, but it is expensive and has a long manufacturing period, so the traditional stamping T-shaped plug is replaced for economic benefits.
[0003] The traditional T-shaped plug provides a retaining force by interference fit. The interference amount, wall thickness and interference length are important factors affecting the retaining force. When the T-shaped plug cannot use a large wall thickness due to external reasons, the interference force provided by the interference fit will be small. To ensure that the interference force does not change, the traditional T-shaped plug increases the interference length, i.e. increases the length of the plug body. The plug body is too long, which is not conducive to stamping, and sometimes it is limited by the depth of the installation hole, so the plug body cannot be increased.
[0004] The information disclosed in this BACKGROUND section is only for the purpose of increasing the understanding of the background of the present utility model and should not be regarded as an acknowledgment or any form of suggestion that it forms prior art that is publicly known. SUMMARY
[0005] The utility model aims at providing a clamping structure with elastic sheet which can prevent loosening.
[0006] To achieve the above-mentioned purpose, the utility model provides a clamping structure with elastic sheet, which comprises a rocker bearing, a bushing between the rocker and the rocker bearing, an installation hole and a clamping groove on the rocker bearing, the installation hole is a blind hole on the rocker bearing, and the clamping groove is a ring-shaped groove on the side wall of the installation hole; a T-shaped plug, which comprises a plug body and a plurality of elastic sheets, the plug body can be installed in the installation hole, the plug body comprises a cylindrical plug body side wall and a bottom plate, the plug body side wall is perpendicular to the bottom plate, and one end of the plug body side wall is connected to the outer edge of the bottom plate; the elastic sheets are on the plug body side wall and can be clamped in the clamping groove, the elastic sheets comprise elastic arms and clamping bodies, one end of the elastic arm is connected to the plug body side wall, the other end is connected to the clamping body, the elastic arm has elasticity, the clamping body is sharp-angled, the sharp end protrudes out of the plug body side wall, and the elastic arm can contract inward after the clamping body is stressed.
[0007] In one or more embodiments, the rocker arm support further comprises a rocker arm shaft end face, which is a plane, and which is perpendicular to the side wall of the mounting hole; and the T-shaped plug further comprises an end cover, which is a plate structure with a circular hole in the middle, the radius of the circular hole matches the radius of the side wall of the plug body, the end cover is perpendicular to the side wall of the plug body, the inner edge of the circular hole is connected to the other end of the side wall of the plug body, and the shape of the bottom surface of the end cover matches the rocker arm shaft end face.
[0008] In one or more embodiments, the end cover can completely cover the bushing, and the end cover is used to limit the axial movement of the rocker arm and the bushing.
[0009] In one or more embodiments, the clamping body comprises an inclined wall and a flat wall, one end of the inclined wall is connected to the elastic arm, the other end of the inclined wall is connected to one end of the flat wall, and the inclined wall forms an obtuse angle with the elastic arm.
[0010] In one or more embodiments, a hook body is arranged on the clamping body and connected to the other end of the flat wall.
[0011] In one or more embodiments, a spring mounting groove is arranged on the side wall of the plug body, and the spring mounting groove can accommodate the clamping body.
[0012] In one or more embodiments, the springs are symmetrically distributed on the plug body.
[0013] In one or more embodiments, the clamping groove comprises a top wall, which is the side wall of the clamping groove on the side close to the rocker arm shaft end face, the top wall is parallel to the rocker arm shaft end face, and the included angle between the top wall and the rocker arm shaft end face is equal to the included angle between the flat wall and the end cover.
[0014] In one or more embodiments, the top wall is parallel to the rocker arm shaft end face, and the flat wall is parallel to the end cover.
[0015] In one or more embodiments, the inclined wall forms an angle of 45° with the flat wall.
[0016] The utility model provides a kind of clamping structure with spring, including plug body and rocker arm support, plug body is equipped with force inward contraction, spring that does not rebound under force, rocker arm support is equipped with with plug body matching mounting hole and clamping groove, mounting hole is used to install plug body, forms interference fit, to interference force as holding force, clamping groove is used to and spring cooperation clamping, to clamping force as holding force. Plug body top is equipped with end cover, end cover can completely cover the bushing outside rocker arm support, realize the limitation to bushing and rocker arm axial displacement. Spring is equipped with hook body, can use special dismounting tool cooperation, T-shaped plug is disassembled, does not damage T-shaped plug, convenient and efficient. Attached Figure Description
[0017] Figure 1 This is a cross-sectional view of a clamping structure with a spring clip provided in an embodiment of this utility model.
[0018] Figure 2 This is a detailed structural diagram of point A of a locking structure with a spring clip provided in an embodiment of this utility model.
[0019] Figure 3 This is a schematic diagram of a clamping structure with a spring clip provided in an embodiment of this utility model.
[0020] Figure 4 This is a diagram of a T-shaped plug structure with a spring clip provided in an embodiment of this utility model.
[0021] Figure 5 This is a structural diagram of a T-shaped plug from one perspective provided in an embodiment of this utility model.
[0022] Figure 6 This is a structural diagram of the T-shaped plug from another perspective provided in an embodiment of this utility model.
[0023] Figure 7 This is a disassembly diagram of the T-shaped plug provided in this embodiment of the utility model.
[0024] Explanation of key figure labels:
[0025] 1-Rock arm support, 11-Rock arm shaft, 111-Rock arm shaft end face, 12-Mounting hole, 13-Snap-fit groove, 131-Top wall, 2-Rock arm, 3-Bushing, 4-T-shaped plug, 41-End cap, 411-Round hole, 42-Plug body, 421-Plug body side wall, 422-Spring mounting groove, 423-Base plate, 5-Spring, 51-Spring arm, 52-Snap-fit body, 521-Sloping wall, 522-Flat wall, 53-Hook body, 6-Tool. Detailed Implementation
[0026] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. However, it should be understood that the scope of protection of this utility model is not limited to the specific embodiments.
[0027] Unless otherwise expressly stated, throughout the specification and claims, the term "comprising" or its variations such as "including" or "comprises" shall be understood to include the stated elements or components without excluding other elements or other components.
[0028] A locking structure with a spring clip, such as Figures 1 to 6As shown, it comprises: a rocker arm support 1, which is located in a rocker arm 2, and has a bushing 3 between the rocker arm 2 and the rocker arm support 1, the rocker arm support 1 comprises a mounting hole 12 and a clamping groove 13, the mounting hole 12 is a blind hole arranged on the rocker arm support 1, and the clamping groove 13 is a groove arranged around the side wall of the mounting hole 12; a T-shaped plug 4, which comprises a plug body 42 and a plurality of elastic pieces 5, the plug body 42 can be installed in the mounting hole 12, the plug body 42 comprises a cylindrical plug body side wall 421 and a bottom plate 423, the plug body side wall 421 is perpendicular to the bottom plate 423, one end of the plug body side wall 421 is connected with the outer edge of the bottom plate 423; the elastic pieces 5 are located on the plug body side wall 421 and can be clamped in the clamping groove 13, the elastic pieces 5 comprise elastic arms 51 and clamping bodies 52, one end of the elastic arm 51 is connected with the plug body side wall 421, the other end is connected with the clamping body 52, the elastic arm 51 has elasticity, the clamping body 52 is sharp-angled, and the sharp end protrudes out of the plug body side wall 421, and the elastic arm 51 can contract inward after the outside of the clamping body 52 is forced.
[0029] Specifically, the clamping groove 13 is a ring-shaped groove arranged around the side wall of the mounting hole 12. The mounting hole 12 is shaped to match the shape of the plug body 42, and the plug body 42 can be in interference fit with the mounting hole 12. The elastic sheet 5 is shaped to match the shape of the clamping groove 13 and can be clamped in the clamping groove 13, realizing the clamping of the T-shaped plug 4 and the rocker arm support 1. The clamping body 52 can be clamped in the clamping groove 13, and the elastic arm 51 provides elastic force for the clamping body 52, which can be bent and reset. When it is bent inward, the clamping body 52 on it is retracted, ensuring that the plug body 42 is smoothly inserted into the mounting hole 12. When it is reset, the elastic sheet 5 returns to its original state, and the clamping body 52 is embedded in the clamping groove 13, completing the clamping. The strength of the elastic arm is determined by the material and size. The plug body 42 is generally made of plastic material. When this material is slightly deformed, as long as the stress does not exceed its yield limit, the deformation can be restored. This is the working principle of the elastic arm. In use, the plug body 42 needs to be installed into the mounting hole 12. Since the clamping body 52 protrudes from the plug side wall 421, and the elastic arm 51 has elasticity, when the plug body 42 enters the mounting hole 12, the clamping body 52 retracts inward when it contacts the side wall of the mounting hole 12, and the elastic arm 51 retracts inward, driving the clamping body 52 to retract inward. The side wall of the mounting hole 12 is provided with a clamping groove 13, which can accommodate the clamping body 52. As the plug body 42 further enters the mounting hole 12, the clamping body 52 moves to a position close to the clamping groove 13, the elastic arm 51 rebounds, and the clamping body 52 is clamped into the clamping groove 13, thereby realizing the clamping of the plug body 42 and the rocker arm support 1. The number of elastic sheets 5 is related to the diameter of the plug body 42. The larger the diameter, the more elastic sheets 5 can be accommodated, but in principle, the number of elastic sheets 5 is not less than 2.
[0030] As an optional embodiment, the rocker arm support 1 further comprises a rocker arm shaft end face 111, which is a plane, and the rocker arm shaft end face 111 is perpendicular to the side wall of the mounting hole 12. The T-shaped plug 4 further comprises an end cover 41, which is a plate-shaped structure with a circular hole 411 in the middle. The radius of the circular hole 411 matches the radius of the plug side wall 421, and the end cover 41 is perpendicular to the plug side wall 421. The inner edge of the circular hole 411 is connected to the other end of the plug side wall 421, and the shape of the bottom surface of the end cover 41 matches the shape of the rocker arm shaft end face 111.
[0031] Specifically, the end cover 41 cooperates with the rocker arm shaft end surface 111. When the plug body 42 is installed in the mounting hole 12, the end cover 41 can be attached to the support top surface. The end cover 41 has a circular hole 411 in the middle, and the plug body side wall 421 is connected to the bottom plate 423 at one end and connected to the circular hole 411 at the other end. As a preferred embodiment, the connection between the plug body side wall 421 and the end cover 41 is trumpet-shaped. As a preferred embodiment, the end cover 41 is a circular ring.
[0032] As an optional embodiment, the end cover 41 can completely cover the bushing 3, and the end cover 41 is used to limit the axial movement of the rocker arm 2 and the bushing 3.
[0033] Specifically, the meaning that the end cover 41 can completely cover the bushing 3 is that the top of the rocker arm support 1 is a rocker arm shaft 11, the rocker arm shaft 11 is cylindrical, the bushing 3 is cylindrical, the end cover 41 is circular ring, and the outer diameter of the end cover 41 is greater than the outer diameter of the bushing 3. As a preferred embodiment, the mounting hole 12 is located at the center of the rocker arm shaft 11. The bushing 3 is sleeved outside the rocker arm shaft 11. The rocker arm 2 is located outside the bushing 3. The end cover 41 can also be other shapes that cooperate with the bushing 3, as long as the end cover 41 can completely cover the bushing 3 and cover part of the rocker arm 2.
[0034] As an optional embodiment, the clamping body 52 includes an inclined wall 521 and a flat wall 522, one end of the inclined wall 521 is connected to the elastic arm 51, the other end of the inclined wall 521 is connected to one end of the flat wall 522, and the inclined wall 521 forms an obtuse angle with the elastic arm 51.
[0035] Specifically, the clamping body 52 is a protruding sharp corner structure, and the sharp corner is composed of the flat wall 522 and the inclined wall 521. The inclined wall 521 is connected to the elastic arm 51 to fix the clamping body 52 on the elastic arm 51. The inclined wall 521 and the flat wall 522 point to the central axis of the plug body 42.
[0036] As an optional embodiment, the clamping body 52 is provided with a hook body 53, and the hook body 53 is connected to the other end of the flat wall 522.
[0037] Specifically, the hook body 53 can cooperate with the tool 6. When disassembly is needed, the tool 6 is buckled into the inner hook, the tool 6 is pulled tight, the hook body 53 drives the clamping body 52 to move inward, the elastic arm 51 bends inward, so that the clamping body 52 is separated from the clamping groove 13, the plug body 42 is separated from the mounting hole 12, and the clamping of the T-shaped plug 4 and the rocker arm support 1 is released. The method is more convenient and efficient, greatly reduces the disassembly damage of the T-shaped plug 4, prolongs the service life of the T-shaped plug 4, saves the cost of replacing parts, and has obvious advantages compared with the traditional pry bar disassembly.
[0038] As an optional embodiment, the plug body side wall 421 is provided with a spring mounting groove 422, and the spring mounting groove 422 can accommodate the clamping body 52.
[0039] Specifically, the spring mounting groove 422 can accommodate the clamping body 52 in the use state and the relaxed state.
[0040] As an optional embodiment, the springs 5 are centrally symmetrically distributed on the plug body 42.
[0041] Specifically, a plurality of springs 5 are distributed in the circumferential direction of the plug body 42 and are centrally distributed.
[0042] As an optional embodiment, the clamping groove 13 includes a top wall 131, the top wall 131 is a side wall of the clamping groove 13 close to the rocker arm shaft end face 111, the top wall 131 is parallel to the rocker arm shaft end face 111, and the included angle between the top wall 131 and the rocker arm shaft end face 111 is equal to the included angle between the flat wall 522 and the end cover 41.
[0043] Specifically, the clamping groove 13 includes a top wall 131 and a bottom wall. The flat wall 522 is arranged on one side close to the end cover 41, and the inclined wall 521 is arranged on one side close to the bottom plate 423. The included angle between the top wall 131 and the rocker arm shaft end face 111 is equal to the included angle between the flat wall 522 and the end cover 41, which means that when the plug body 42 is installed in the mounting hole 12 and the clamping body 52 is not stressed, the top wall 131 and the flat wall 522 are parallel.
[0044] As an optional embodiment, the top wall 131 is parallel to the rocker arm shaft end face 111, and the flat wall 522 is parallel to the end cover 41.
[0045] Specifically, the top wall 131 and the flat wall 522 are parallel, and the optimal condition is that the clamping groove 13 is perpendicular to the mounting hole 12. The flat wall 522 is also perpendicular to the plug body side wall 421. The depth of the clamping groove 13 and the clamping body 52 are matched, and the inner diameter of the mounting hole 12 and the outer diameter of the plug body 42 are matched.
[0046] As an optional implementation, the inclined wall 521 is 45° with the flat wall 522.
[0047] Specifically, the inclined wall 521 and the flat wall 522 are acute, and the optimal inclination angle is 45°, which can also be modified according to actual conditions.
[0048] By adopting the above technical scheme, the plug body 42 and the rocker arm support 1 are included, the plug body 42 is provided with the spring sheet 5 which is contracted inward under stress and rebounded without stress, the rocker arm support 1 is provided with the mounting hole 12 and the clamping groove 13 which are matched with the plug body 42, the mounting hole 12 is used for mounting the plug body 42 to form an interference fit, so that the interference force is used as a retaining force, and the clamping groove 13 is used for clamping the spring sheet 5 to form a clamping force as a retaining force. The plug body 42 is provided with the end cover 41 at the top, the end cover 41 can completely cover the bushing 3 outside the rocker arm support 1, so as to limit the axial displacement of the bushing 3 and the rocker arm 2. The spring sheet 5 is provided with the hook body 53 which can cooperate with the special dismounting tool 6 to dismount the T-shaped plug 4 without damaging the T-shaped plug 4, and is convenient and efficient.
[0049] The foregoing description of specific exemplary embodiments of the present application is intended for the purpose of illustration and example only. These descriptions are not intended to limit the application to the precise forms disclosed, and obviously many modifications and variations are possible in light of the above teachings. The exemplary embodiments were chosen and described in order to explain the principles of the application and its practical application and to allow others skilled in the art to understand the application for various exemplary embodiments with various modifications as are suited to the particular use contemplated. It is intended that the scope of the application be defined by the claims and their equivalents.
Claims
1. A chucking structure with a spring piece, characterized by comprising: The application relates to a rocker arm support, a T-shaped plug and an end cover. The rocker arm support is arranged in a rocker arm, a bushing is arranged between the rocker arm and the rocker arm support, the rocker arm support comprises a mounting hole and a clamping groove, the mounting hole is a blind hole arranged on the rocker arm support, and the clamping groove is an annular groove arranged on a side wall of the mounting hole. The T-shaped plug comprises a plug body and a plurality of elastic pieces, the plug body can be arranged in the mounting hole, the plug body comprises a cylindrical plug body side wall and a bottom plate, the plug body side wall is perpendicular to the bottom plate, one end of the plug body side wall is connected with an outer edge of the bottom plate, the elastic pieces are arranged on the plug body side wall and can be clamped in the clamping groove, the elastic pieces comprise elastic arms and clamping bodies, one end of the elastic arm is connected with the plug body side wall, the other end of the elastic arm is connected with the clamping body, the elastic arm has elasticity, the clamping body is in the shape of a sharp angle, and a sharp end of the clamping body protrudes out of the plug body side wall, and the elastic arm can be inwardly retracted after the clamping body is subjected to an external force.
2. The chucking structure with a spring sheet according to claim 1, wherein The rocker arm support further comprises a rocker arm shaft end surface, the rocker arm shaft end surface is a plane, and the rocker arm shaft end surface is perpendicular to a side wall of the mounting hole. The T-shaped plug further comprises an end cover, the end cover is in the shape of a plate with a circular hole in the middle, a radius of the circular hole matches a radius of the plug body side wall, the end cover is perpendicular to the plug body side wall, an inner edge of the circular hole is connected with the other end of the plug body side wall, and a bottom surface of the end cover matches the rocker arm shaft end surface.
3. The chucking structure with a spring sheet according to claim 2, wherein The end cover can completely cover the bushing, and the end cover is used for limiting axial movement of the rocker arm and the bushing.
4. The chucking structure with a spring sheet according to Claim 2, wherein The clamping body comprises an inclined wall and a flat wall, one end of the inclined wall is connected with the elastic arm, the other end of the inclined wall is connected with one end of the flat wall, and the inclined wall forms an obtuse angle with the elastic arm.
5. The clamping structure with a spring piece according to claim 4, wherein A hook body is arranged on the clamping body and connected with the other end of the flat wall.
6. The clamping structure with a spring piece according to claim 1, wherein An elastic piece mounting groove is arranged on the plug body side wall and can accommodate the clamping body.
7. The clamping structure with a spring piece according to claim 1, wherein The elastic pieces are symmetrically distributed on the plug body.
8. The chucking structure with a spring sheet according to Claim 4, wherein The clamping groove comprises a top wall, the top wall is a side wall of the clamping groove close to the rocker arm shaft end surface, the top wall is parallel to the rocker arm shaft end surface, an included angle between the top wall and the rocker arm shaft end surface is equal to an included angle between the flat wall and the end cover.
9. The clamping structure with a spring piece according to claim 8, wherein The top wall is parallel to the rocker arm shaft end surface, and the flat wall is parallel to the end cover.
10. The chucking structure with a spring sheet according to Claim 9, wherein The inclined wall forms an angle of 45 degrees with the flat wall.