Swing arm structure
By introducing vertical bogies and buffer components into the swing arm structure, the vibration problem caused by inertia during horizontal movement of the swing arm structure is solved, arc-shaped movement and vertical floating are achieved, and the stability and comfort of the product are improved.
Patent Information
- Application Number
- CN202422259135.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-14
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-09-14
AI Technical Summary
The existing swing arm structure has obvious vibration caused by inertia during horizontal movement, which affects the comfort of the product, especially at high speed movement, and may cause impact on other components when in the extreme position.
The bogie is arranged vertically and moves the main swing arm and the secondary swing arm along an arc trajectory. The bogie drives the secondary swing arm to move in the opposite direction from the main swing arm through the bogie, and a buffer assembly is provided on the frame to reduce inertial vibration and floating range.
It realizes reducing vibration in the horizontal direction, meeting the needs of vertical floating, reducing noise and wear, and improving the accuracy and stability of the swing arm structure.
Smart Images
Figure CN223076145U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of transmission devices, and particularly to a swing arm structure. Background Art
[0002] The swing arm structure usually includes a main swing arm and a secondary swing arm driven by the main swing arm. The secondary swing arm moves relative to the main swing arm in the same or opposite direction. The existing swing arm driving usually involves the two swing arms moving at the same horizontal height. For some special products, it is required that while the swing arm swings horizontally, it can float in the vertical direction. At the same time, reciprocating moving parts will inevitably cause impacts on other cooperating parts when moving to the extreme positions. For example, when the swing arm structure swings to the most extreme point, due to inertia, the entire product including the swing arm structure will displace in the corresponding direction of the swing arm movement. Especially for a swing arm under high-speed movement, it will make the entire product have an obvious sense of vibration, thus affecting the use comfort of the product. Therefore, a new swing arm structure is designed. Summary of the Utility Model
[0003] In order to solve the above technical problems, the purpose of the utility model is to provide a swing arm structure, which solves the problems of the simple function of the existing swing arm and only moving at the same horizontal height.
[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows: a swing arm structure, including a main swing arm and a secondary swing arm, wherein the main swing arm and the secondary swing arm are linked by a vertically arranged bogie, and the main swing arm moves and drives the secondary swing arm to move in the direction opposite to the movement direction of the main swing arm through the bogie.
[0005] By adopting the above technical solution, under the action of the vertically arranged bogie, the main swing arm and the secondary swing arm move along an arc trajectory, realizing the left and right staggered swing in the horizontal direction. Compared with the structure where the main swing arm and the secondary swing arm move in the same direction, the inertia is mutually offset, the vibration is reduced, and at the same time, the requirement of floating in the vertical direction is satisfied.
[0006] Furthermore, a frame is arranged on the swing arm structure, the center of the bogie is rotationally connected to the frame, and the upper and lower ends of the bogie are respectively rotationally connected to the main swing arm and the secondary swing arm.
[0007] By adopting the above technical solution, limiting the center of the bogie on the frame can not only provide stable support for the swing arm structure, reduce the deviation of the up and down floating of the swing arm, but also limit the range of the up and down floating of the swing arm. The larger the floating range of the component, the greater the relative wear, the generated noise and the movement deviation. The above limitation makes the swing arm have high precision and achieve the purpose of noise reduction.
[0008] Furthermore, the bogie is rotatably connected to the main swing arm, the auxiliary swing arm, and the frame through pivot structures respectively. The pivot structure includes a shaft and a bearing. One end of the shaft is fixed to the bogie, and the other end penetrates into the inner hole of the bearing and is connected to the swing arm structure or the frame through the bearing.
[0009] By adopting the above technical solution, the rotation of the bogie is smoother. Using existing components, the assembly is simple and the cost is low.
[0010] Furthermore, extension wings for installing the bogie are respectively arranged at both ends of the frame, and an opening groove for accommodating the lower end of the auxiliary swing arm is formed on each extension wing.
[0011] By adopting the above technical solution, the frame provides a basic support for the installation of the swing arm structure and plays a role in limiting to a certain extent to reduce the movement deviation.
[0012] Furthermore, the frame includes a support plane, and a buffer assembly is arranged between the swing arm structure and the support plane.
[0013] By adopting the above technical solution, when the main swing arm and the auxiliary swing arm float up and down vertically, compared with the swing arm structure with a single horizontal movement, there is inevitably greater shaking. The setting of the buffer assembly provides a vertical tension between the swing arm structure and the frame, which is used to eliminate the accumulated tolerance and shaking, make the connection tighter, and reduce braking and noise.
[0014] Furthermore, limiting structures for positioning the buffer assembly are arranged on the support plane and the swing arm structure.
[0015] By adopting the above technical solution, the limiting structure ensures the connection tightness of the buffer assembly and avoids deviation and failure.
[0016] Furthermore, the limiting structure includes a convex column and a groove, and a limiting hole that can be stuck in the groove and sleeved on the convex column is arranged on the buffer assembly.
[0017] By adopting the above technical solution, the connection tightness of the buffer assembly is ensured.
[0018] Furthermore, the bogie is arranged on both sides of the main swing arm and the auxiliary swing arm respectively.
[0019] By adopting the above technical solution, the two-way drive ensures the synchronization of the alternating movement of the main swing arm and the auxiliary swing arm.
[0020] Furthermore, the main swing arm is connected to a power assembly to swing.
[0021] By adopting the above technical solution, power is provided for the movement of the main swing arm.
[0022] Furthermore, the force transmission between the main swing arm and the power assembly is achieved through a transmission assembly. The transmission assembly includes a slider and a chute. The chute is fixed on the main swing arm and is configured to swing by the sliding of the slider, and the power assembly drives the slider to move.
[0023] By adopting the above technical solution, the left - right swing of the main swing arm is realized.
[0024] Compared with the prior art, the advantages of the present utility model are as follows: 1. The vertically arranged bogie realizes the arc movement of the swing arm structure. While the swing arm is performing horizontal movement, it floats up and down within a certain range, meeting the product requirements of products such as shavers and trimmers; 2. The setting of the buffer assembly cooperates with the swing arm structure that floats up and down, reducing braking and noise; 3. The main swing arm and the sub - swing arm are closely matched under the action of the frame and the bogie. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 It is a schematic exploded view of the present utility model.
[0026] Figure 2 It is a schematic assembled view of the present utility model.
[0027] In the figure: 1. Main swing arm, 1 - 1. Chute, 7. Positioning ring, 9. Rolling element, 10. Eccentric assembly, 11. Bearing, 12. Shaft, 13. Bogie, 14. Output shaft, 15. Frame, 15 - 1. Extension wing, 15 - 2. Open slot, 17. Buffer, 16. Sub - swing arm, 18. Limiting structure, 100. Slider. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0028] The present utility model will be further described in detail below in conjunction with the embodiments of the drawings.
[0029] Embodiment 1: Given by Figures 1 to 2 A swing arm structure includes a main swing arm 1 and a sub - swing arm 16. The main swing arm 1 and the sub - swing arm 16 are linked through a vertically arranged bogie 13. The main swing arm 1 moves and drives the sub - swing arm 16 to perform a movement in the opposite direction to the movement direction of the main swing arm through the bogie 13.
[0030] Embodiment 2: On the basis of Embodiment 1, a frame 15 is arranged on the swing arm structure and installed through the frame 15. Extension wings 15 - 1 for installing the bogie 13 are respectively arranged at both ends of the frame 15. The center of the bogie 13 is rotatably connected to the extension wing 15 - 1 of the frame 15. The upper and lower ends of the bogie 13 are respectively rotatably connected to the main swing arm 1 and the sub - swing arm 16. The bogie 13 is arranged on both sides of the main swing arm 1 and the sub - swing arm 16, and open slots 15 - 2 for accommodating the lower end of the sub - swing arm 16 are formed on each extension wing.
[0031] Based on the above embodiments, the bogie 13 is rotatably connected to the main swing arm 1, the auxiliary swing arm 16, and the frame 15 respectively through pivot structures. The pivot structure includes a shaft 12 and a bearing 11. One end of the shaft 12 is fixed to the bogie 13, and the other end passes through the inner hole of the bearing 11 and is connected to the swing arm structure or the frame 15 through the bearing 11. A groove for bearing installation and for the shaft 12 to pass through is provided on the swing arm structure or the frame 15. When the bearing 11 is installed in the groove, a positioning ring 7 is provided in the groove between the bearing and the groove.
[0032] Embodiment 3: Based on the above embodiments, a buffer assembly is provided between the frame 15 and the swing arm assembly. The frame 15 includes a support plane, and a limiting structure 18 for positioning the buffer assembly is provided on the support plane and the swing arm structure. The limiting structure includes a protruding column and a groove. A limiting hole that can be stuck in the groove and sleeved on the protruding column is provided on the buffer assembly.
[0033] Based on the above embodiments, the buffer assembly includes a plurality of independently provided buffer members 17. Each of the buffer members 17 is correspondingly provided between the two sides of the main swing arm and the frame, and between the two sides of the auxiliary swing arm and the frame. The limiting structure is provided on the lower surfaces of the main swing arm and the auxiliary swing arm and the upper surface of the support plane respectively.
[0034] Based on the above embodiments, the buffer member 17 is a spring, and the inner hole of the spring serves as the limiting hole.
[0035] The difference from the above embodiments is that the buffer member is a rubber block, and a concave hole corresponding to the limiting structure is provided on the rubber block as the limiting hole.
[0036] Embodiment 4: Based on the above embodiments, the main swing arm 1 is connected to a power assembly for swinging. A force transmission is achieved between the main swing arm 1 and the power assembly through a transmission assembly. The transmission assembly includes a slider 100 and a chute 1-1. The chute 1-1 is fixed on the main swing arm 1 and is configured to swing by sliding the slider 100. A rolling member 9 is provided between the chute 1-1 and the slider 100 to reduce friction and noise.
[0037] Based on the above embodiments, the rolling member 9 can be provided on the inner surface of the chute that cooperates with the slider or the outer surface of the slider that cooperates with the chute.
[0038] The working principle process of the present utility model is as follows: The slider 100 is connected to the output shaft 14 of the power assembly through an eccentric assembly 10 and a bearing 11. The slider 100 is driven by the power assembly to move. The slider 100 drives the chute 1-1 to move, and drives the main swing arm 1 fixed to the chute 1-1 to swing left and right. The main swing arm 1 drives the auxiliary swing arm 16 to perform an arc movement together through the bogie 13.
[0039] Principle of the slider driving the chute: The slider 100 has a square block structure, and the chute 1-1 has a groove structure with a long strip-shaped space. The slider is arranged between the eccentric component and the chute. The slider 100 is adapted to the chute 1-1 in the width direction, and the length of the chute 1-1 is greater than the length of the slider 100, so that when the slider 100 slides in the length direction, its movement is limited within the chute 1-1. At this time, the chute 1-1 provides a space for the slider 100 to move. However, when the slider 100 moves in the width direction, since there is no reserved space between the chute 1-1 and the slider 100, the slider 100 drives the chute 1-1 to move together in the width direction.
[0040] Although the preferred embodiments of the present invention have been described in detail above, it should be clearly understood that various changes and modifications can be made to the present invention for those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.
Claims
1. Swing arm structure, including a main swing arm and a secondary swing arm, characterized in that, The main swing arm and the auxiliary swing arm are linked by a vertically arranged bogie. The main swing arm moves and drives the auxiliary swing arm to move in the direction opposite to that of the main swing arm through the bogie.
2. The swing arm structure according to claim 1, wherein, A frame is arranged on the swing arm structure. The center of the bogie is rotatably connected to the frame, and the upper and lower ends of the bogie are respectively rotatably connected to the main swing arm and the auxiliary swing arm.
3. The swing arm structure according to claim 2, wherein, The bogie is rotatably connected to the main swing arm, the auxiliary swing arm, and the frame respectively through pivot structures. The pivot structures include shafts and bearings. One end of the shaft is fixed to the bogie and the other end passes through the inner hole of the bearing and is connected to the swing arm structure or the frame through the bearing.
4. The swing arm structure according to claim 1, wherein, Extension wings for installing the bogie are respectively arranged at both ends of the frame, and open slots for accommodating the lower end of the auxiliary swing arm are formed on each of the extension wings.
5. The swing arm structure according to claim 2, characterized in that, The frame includes a support plane, and a buffer assembly is arranged between the swing arm structure and the support plane.
6. The swing arm structure according to claim 5, wherein, Limit structures for positioning the buffer assembly are arranged on the support plane and the swing arm structure.
7. The swing arm structure according to claim 6, characterized in that, The limit structure includes a protruding column and a groove, and a limit hole that can be stuck in the groove and sleeved on the protruding column is arranged on the buffer assembly.
8. The swing arm structure according to claim 1, wherein, The bogies are respectively arranged on both sides of the main swing arm and the auxiliary swing arm.
9. The swing arm structure according to claim 1, wherein The main swing arm is connected to a power assembly to swing.
10. The swing arm structure according to claim 9, wherein, Force transmission between the main swing arm and the power assembly is achieved through a transmission assembly. The transmission assembly includes a slider and a chute. The chute is fixed on the main swing arm and is arranged to swing by sliding the slider, and the power assembly drives the slider to move.