Damping wheel

Abstract

The utility model discloses a damping wheel which comprises a wheel, a connecting shaft, a frame and two damping devices. The axis direction of the wheels is the left-right direction. The connecting shaft penetrates through and is rotationally connected to the wheels, and the wheels and the connecting shaft are coaxially arranged. The frame is provided with two long-strip-shaped through holes extending in the vertical direction, the two long-strip-shaped through holes are located in the left side and the right side of the wheel respectively, and the connecting shaft penetrates through the long-strip-shaped through holes and can move in the vertical direction relative to the frame. The two damping devices are located on the left side and the right side of the wheel respectively, the two damping devices correspond to the two long-strip-shaped through holes in a one-to-one mode, each damping device comprises a first base, a second base and a damping spring, the first bases are fixedly installed on the frame, the second bases are fixedly installed on the connecting shaft, the upper ends of the damping springs are connected with the first bases, and the lower ends of the damping springs are connected with the second bases. The damping wheel adopts a double-side damping structure, the damping effect of the spring is better, and the situation that the service life of the trundle is affected by increasing the axis distance due to the adoption of a damping structure in the front-back direction is avoided.

Description

Technical Field

[0001] This utility model relates to the field of wheel technology, and in particular to a shock-absorbing wheel. Background Technology

[0002] Some furniture, such as tables, cabinets, and chairs, is usually equipped with casters, which support the furniture and facilitate its movement. Currently, some casters have shock-absorbing structures that can absorb shocks when the casters travel over uneven surfaces. Traditional casters mostly use single-sided shock-absorbing designs or multi-stage linkage structures; the former has poor shock absorption, while the latter has a complex structure and cannot meet everyday needs. Utility Model Content

[0003] This invention aims to at least partially solve one of the technical problems in related technologies. To this end, this invention proposes a shock-absorbing wheel.

[0004] This utility model embodiment provides a shock-absorbing wheel, the shock-absorbing wheel comprising:

[0005] The wheel's axis runs left to right;

[0006] A connecting shaft is provided and rotatably connected to the wheel, and the wheel is coaxially arranged with the connecting shaft;

[0007] The frame has two elongated through holes extending in the vertical direction. The two elongated through holes are located on the left and right sides of the wheel, respectively. The connecting shaft passes through the elongated through holes and can move relative to the frame in the vertical direction.

[0008] The shock absorber is located on the left and right sides of the wheel respectively. The shock absorber includes a first seat, a second seat and a shock absorber spring. The first seat is fixedly installed on the frame and the second seat is fixedly installed on the connecting shaft. The upper end of the shock absorber spring is connected to the first seat and the lower end of the shock absorber spring is connected to the second seat.

[0009] The shock-absorbing wheel according to this utility model embodiment has at least the following technical effects: when the wheel vibrates after passing over uneven ground, the kinetic energy is absorbed by the shock-absorbing spring before being transmitted to the frame, thereby reducing the vibration of the frame and improving the user experience. The two shock-absorbing devices of this wheel are located on the left and right sides of the wheel, adopting a double-sided shock-absorbing structure. The combination of single-stage and double-sided shock absorption makes the shock absorption effect more effective while maintaining a simple structure, and avoids the increased axle distance and reduced caster life caused by using a front-to-back shock absorption structure.

[0010] According to some embodiments of the present invention, the first seat has an inner cavity with its opening facing downwards, the second seat has an inner cavity with its opening facing upwards, the upper end of the shock-absorbing spring is inserted into the first seat, and the lower end of the shock-absorbing spring is inserted into the second seat.

[0011] According to some embodiments of the present invention, a first guide post is provided in the first seat, and a second guide post is provided in the second seat. The axial directions of the first guide post and the second guide post are both vertical. The upper end of the shock-absorbing spring is sleeved on the first guide post, and the lower end of the shock-absorbing spring is sleeved on the second guide post.

[0012] According to some embodiments of the present invention, the frame is provided with a positioning hole, the first seat is provided with a positioning block, the positioning block is inserted into the positioning hole, and the first seat is fixedly connected to the frame by bolts.

[0013] According to some embodiments of the present invention, the side wall of the first seat is provided with a first notch communicating with the inner cavity of the first seat, and the side wall of the second seat is provided with a second notch communicating with the inner cavity of the second seat.

[0014] According to some embodiments of the present invention, the shock-absorbing wheel further includes a mounting base and a first rotating shaft. The mounting base is located above the vehicle frame, one end of the first rotating shaft is fixedly mounted on the mounting base, and the lower end of the first rotating shaft passes through and is rotatably connected to the vehicle frame.

[0015] According to some embodiments of the present invention, a turntable is fixedly connected to the lower end of the first rotating shaft, and a plurality of third notches are provided on the side wall of the turntable, the plurality of third notches being distributed circumferentially along the turntable; the shock-absorbing wheel further includes a locking device, the locking device being installed on the frame, and the locking device being able to be inserted into the third notches to fix the frame relative to the turntable.

[0016] According to some embodiments of the present invention, the locking device includes a fixed base, a return spring, and a pin. The fixed base is fixedly installed on the vehicle frame. The pin passes through and is rotatably connected to the fixed base. The pin can move to the left to insert into the third notch or move to the right to disengage from the third notch. The return spring is sleeved on the pin and continuously applies a leftward force to the pin. A limiting rod is provided at the right end of the pin. The limiting rod can abut against the fixed base to restrict the pin from moving to the left.

[0017] According to some embodiments of the present invention, the right end of the fixing seat has a first groove and a second groove, the bottom of the first groove is located to the left of the bottom of the second groove; when the limiting rod abuts against the bottom of the first groove, the pin is inserted into the third notch; when the limiting rod abuts against the bottom of the second groove, the pin disengages from the third notch.

[0018] According to some embodiments of this utility model, the vehicle frame is provided with a spring, and the shock-absorbing wheel also includes a braking device. The braking device includes a subframe, a second rotating shaft, and a brake pedal. The subframe is slidably connected to the vehicle frame in the vertical direction. The connecting shaft passes through the subframe. The second rotating shaft is installed on the subframe. The brake pedal is rotatably connected to the second rotating shaft. The brake pedal can rotate to drive the spring to bend downward so that the spring is close to and fits against the wheel, or to drive the spring to rebound away from the wheel.

[0019] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0021] Figure 1 This is a schematic diagram of the structure of the shock-absorbing wheel according to some embodiments of the present invention;

[0022] Figure 2 This is an exploded view of the shock-absorbing wheel of some embodiments of this utility model;

[0023] Figure 3 This is a cross-sectional view of the shock-absorbing wheel according to some embodiments of this utility model;

[0024] Figure 4 This is an exploded view of a portion of the structure of the shock-absorbing wheel according to some embodiments of this utility model;

[0025] Figure 5 This is an exploded view of a portion of the structure of the shock-absorbing wheel according to some embodiments of this utility model.

[0026] Icon labels:

[0027] Wheel 100; Connecting axle 110; Frame 120; Long through hole 121; Positioning hole 131; Positioning block 132; Mounting base 140; First rotating shaft 141; Turntable 150; Third notch 151;

[0028] Shock absorber 200; shock absorber spring 210; first seat 220; first guide post 221; first notch 222; second seat 230; second guide post 231; second notch 232;

[0029] Locking device 300; fixed base 310; return spring 320; pin 330; limit rod 331; first groove 341; second groove 342;

[0030] Braking device 400; second rotating shaft 410; brake pedal 420; subframe 430; spring 440. Detailed Implementation

[0031] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0032] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0034] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0035] The embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0036] According to some embodiments of this utility model, refer to Figures 1 to 5The shock-absorbing wheel includes a wheel 100, a connecting axle 110, a frame 120, and two shock-absorbing devices 200. The axis of the wheel 100 is oriented left to right. The connecting axle 110 passes through and is rotatably connected to the wheel 100, and the wheel 100 and the connecting axle 110 are coaxially arranged. The frame 120 has two elongated through holes 121 extending in the vertical direction. The two elongated through holes 121 are located on the left and right sides of the wheel 100, respectively. The connecting axle 110 passes through the elongated through holes 121 and can move vertically relative to the frame 120, that is, the frame 120 can move vertically relative to the connecting axle 110. Two shock absorbers 200 are located on the left and right sides of the wheel 100, respectively. The two shock absorbers 200 correspond one-to-one with two elongated through holes 121. Each shock absorber 200 includes a first seat 220, a second seat 230, and a shock absorber spring 210. The first seat 220 is fixedly installed on the frame 120, and the second seat 230 is fixedly installed on the connecting shaft 110. The upper end of the shock absorber spring 210 is connected to the first seat 220, and the lower end of the shock absorber spring 210 is connected to the second seat 230.

[0037] Understandably, when the wheel 100 vibrates after passing over an uneven surface, the shock-absorbing spring 210 can absorb the kinetic energy and then transmit it to the frame 120. At this time, the frame 120 moves in the vertical direction relative to the connecting shaft 110, and the connecting shaft 110 moves along the extension direction of the elongated through hole 121, thereby reducing the vibration of the frame 120 and improving the user experience.

[0038] The two shock-absorbing devices 200 of the shock-absorbing wheel are located on the left and right sides of the wheel 100. They adopt a double-sided shock-absorbing structure. The combination of single-stage shock absorption and double-sided shock absorption makes the shock absorption effect more effective and the structure is simple. It also avoids the increase in the axle distance caused by using a shock absorption structure in the front and rear directions, which would affect the life of the caster.

[0039] According to some embodiments of this utility model, refer to Figure 2 and Figure 3 The first seat 220 has an inner cavity with its opening facing downwards, and the second seat 230 has an inner cavity with its opening facing upwards. The upper end of the damping spring 210 is inserted into the first seat 220, and the lower end of the damping spring 210 is inserted into the second seat 230, thereby strengthening the connection stability between the damping spring 210 and the first seat 220 and the second seat 230 respectively, preventing them from separating; and facilitating the assembly of the three together.

[0040] According to some embodiments of this utility model, refer to Figure 2 and Figure 3The first housing 220 contains a first guide post 221, and the second housing 230 contains a second guide post 231. The axes of both the first guide post 221 and the second guide post 231 are vertical. The upper end of the damping spring 210 is fitted onto the first guide post 221, and the lower end of the damping spring 210 is fitted onto the second guide post 231. The first guide post 221 and the second guide post 231 can position and limit the damping spring 210, facilitating assembly and preventing the damping spring 210 from deviating.

[0041] According to some embodiments of this utility model, refer to Figure 2 The frame 120 is provided with a positioning hole 131, and the first seat 220 is provided with a positioning block 132. The positioning block 132 is inserted into the positioning hole 131. The first seat 220 and the frame 120 are fixedly connected by bolts. The cooperation between the positioning block 132 and the positioning hole 131 facilitates the mutual positioning of the first seat 220 and the frame 120, thereby improving assembly efficiency.

[0042] According to some embodiments of this utility model, refer to Figure 2 The side wall of the first seat 220 is provided with a first notch 222 communicating with the inner cavity of the first seat 220, and the side wall of the second seat 230 is provided with a second notch 232 communicating with the inner cavity of the second seat 230. Through the first notch 222 and the second notch 232, it is possible to check whether the shock absorber spring 210 is assembled correctly, and the position of the shock absorber spring 210 can be adjusted to avoid jamming during disassembly and assembly.

[0043] According to some embodiments of this utility model, refer to Figures 1 to 3 The shock-absorbing wheel also includes a mounting base 140 and a first rotating shaft 141. The mounting base 140 is located above the frame 120. One end of the first rotating shaft 141 is fixedly mounted to the mounting base 140, and the lower end of the first rotating shaft 141 passes through and is rotatably connected to the frame 120. The mounting base 140 is mounted on furniture such as tables and cabinets to facilitate furniture movement. The frame 120 can rotate around the axis of the first rotating shaft 141 to achieve steering of the wheel 100.

[0044] According to some embodiments of this utility model, refer to Figure 1 , Figure 4 and Figure 5The lower end of the first rotating shaft 141 is fixedly connected to a turntable 150. The turntable 150 has multiple third notches 151 on its side wall, distributed circumferentially along the turntable 150. The shock-absorbing wheel also includes a locking device 300, mounted on the frame 120. The locking device 300 can be inserted into the third notches 151 to fix the frame 120 relative to the turntable 150. When the locking device 300 is inserted into one of the third notches 151 of the turntable 150, it prevents the turntable 150 from rotating further, thus fixing the frame 120 relative to the turntable 150, and consequently fixing the frame 120 relative to the mounting base 140. At this time, the wheel 100 cannot turn. When the locking device 300 is inserted into different third notches 151, the wheel 100 can be locked at different angles. When the locking device 300 disengages from the third notch 151, the wheel 100 can turn again.

[0045] Preferred, refer to Figure 2 , Figure 3 and Figure 5 The locking device 300 includes a fixed base 310, a return spring 320, and a pin 330. The fixed base 310 is fixedly mounted on the frame 120. The pin 330 passes through and is rotatably connected to the fixed base 310. The pin 330 is able to slide relative to the fixed base 310 in the left-right direction and rotate around its own axis. The pin 330 can move to the left to insert into the third notch 151 or move to the right to disengage from the third notch 151. The return spring 320 is sleeved on the pin 330. The left end of the return spring 320 is connected to the pin 330, and the right end of the return spring 320 is connected to the fixed base 310. The return spring 320 is always in a compressed state, that is, the return spring 320 continuously applies a leftward force to the pin 330. The right end of the pin 330 is provided with a limiting rod 331, which can abut against the fixed base 310 to limit the pin 330 from moving further to the left.

[0046] Furthermore, refer to Figure 2 , Figure 3 and Figure 5 The right end of the fixing base 310 has a first groove 341 and a second groove 342. The bottom of the first groove 341 is located to the left of the bottom of the second groove 342. When the limiting rod 331 abuts against the bottom of the first groove 341, the pin 330 is inserted into the third notch 151. When the limiting rod 331 abuts against the bottom of the second groove 342, the pin 330 is disengaged from the third notch 151.

[0047] Understandably, when locking is required, rotating the pin 330 aligns the limiting rod 331 with the first groove 341. Under the action of the return spring 320, the pin 330 moves to the left and inserts into the third notch 151. The limiting rod 331 enters the first groove 341 and abuts against the bottom of the groove. The first groove 341 restricts the limiting rod 331 from moving further to the left, thus completing the locking. When unlocking is required, pulling the pin 330 to the right overcomes the force of the return spring 320, and rotating the pin 330 aligns the limiting rod 331 with the second groove 342. Under the action of the return spring 320, the pin 330 moves to the left, and the limiting rod 331 enters the second groove 342 and abuts against the bottom of the groove. The second groove 342 restricts the limiting rod 331 from moving further to the left, preventing the pin 330 from moving to the left and inserting into the third notch 151.

[0048] According to some embodiments of this utility model, refer to Figure 1 , Figure 2 and Figure 4 The frame 120 is provided with a spring 440, and the shock absorber wheel also includes a brake device 400. The brake device 400 includes a subframe 430, a second rotating shaft 410, and a brake pedal 420. The axis of the second rotating shaft 410 is in the left-right direction. The subframe 430 is slidably connected to the frame 120 in the up-down direction. The connecting shaft 110 passes through the subframe 430. The second rotating shaft 410 is installed on the subframe 430. The brake pedal 420 is rotatably connected to the second rotating shaft 410. The brake pedal 420 can rotate, thereby causing the spring 440 to bend downward so that the spring 440 is close to and in contact with the wheel 100, or causing the spring 440 to rebound and move away from the wheel 100.

[0049] It is understandable that the connecting shaft 110 passes through both the wheel 100 and the subframe 430, and the connecting shaft 110 passes through the elongated through hole 121 of the frame 120. When the wheel 100 is vibrated, the frame 120 moves vertically relative to the connecting shaft 110, and the frame 120 slides vertically relative to the subframe 430, ensuring that the distance between the spring plate 440 of the subframe 430 and the wheel 100 remains unchanged in the vertical direction. This ensures that the spring plate 440 can fully fit the surface of the wheel 100 during braking, thereby preventing the spring plate 440 from moving away from or closer to the wheel 100 along with the frame 120, thus affecting the braking operation.

[0050] In this specification, the reference to the term "some embodiments" means that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0051] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A shock absorbing wheel characterized by, The utility model relates to a shock-absorbing wheel, which comprises the following parts: a wheel (100) with an axis direction being a left-right direction; a connecting shaft (110) penetrating and rotationally connected to the wheel (100), the wheel (100) and the connecting shaft (110) being coaxially arranged; a frame (120) provided with two long-hole through holes (121) extending in an up-down direction, the two long-hole through holes (121) being respectively located on the left and right sides of the wheel (100), the connecting shaft (110) penetrating the long-hole through holes (121) and being capable of moving in the up-down direction relative to the frame (120); two shock-absorbing devices (200) respectively located on the left and right sides of the wheel (100), the shock-absorbing device (200) comprising a first seat (220), a second seat (230) and a shock-absorbing spring (210), the first seat (220) being fixedly installed on the frame (120), the second seat (230) being fixedly installed on the connecting shaft (110), the upper end of the shock-absorbing spring (210) being connected to the first seat (220), and the lower end of the shock-absorbing spring (210) being connected to the second seat (230).

2. The shock absorbing wheel of claim 1, wherein, The first seat (220) has an inner cavity with an opening facing downward, the second seat (230) has an inner cavity with an opening facing upward, the upper end of the shock-absorbing spring (210) is inserted into the first seat (220), and the lower end of the shock-absorbing spring (210) is inserted into the second seat (230).

3. The shock absorbing wheel of claim 2, wherein, The first seat (220) is internally provided with a first guide column (221), the second seat (230) is internally provided with a second guide column (231), the axis direction of the first guide column (221) and the second guide column (231) is an up-down direction, the upper end of the shock-absorbing spring (210) is sleeved on the first guide column (221), and the lower end of the shock-absorbing spring (210) is sleeved on the second guide column (231).

4. The shock absorbing wheel of claim 1, wherein, The frame (120) is provided with a positioning hole (131), the first seat (220) is provided with a positioning block (132), the positioning block (132) is inserted into the positioning hole (131), and the first seat (220) and the frame (120) are fixedly connected through bolts.

5. The shock absorbing wheel of claim 2, wherein, The side wall of the first seat (220) is provided with a first notch (222) communicating with the inner cavity of the first seat (220), and the side wall of the second seat (230) is provided with a second notch (232) communicating with the inner cavity of the second seat (230).

6. The shock absorbing wheel of claim 1, wherein, The shock-absorbing wheel further comprises a mounting seat (140) and a first rotating shaft (141), the mounting seat (140) is located above the frame (120), one end of the first rotating shaft (141) is fixedly installed on the mounting seat (140), and the lower end of the first rotating shaft (141) penetrates and rotationally connects to the frame (120).

7. The shock absorbing wheel of claim 6, wherein, The lower end of the first rotating shaft (141) is fixedly connected with a rotating disc (150), the side wall of the rotating disc (150) is provided with a plurality of third notches (151), and the plurality of third notches (151) are distributed in the circumferential direction of the rotating disc (150); the shock-absorbing wheel further comprises a locking device (300) installed on the vehicle frame (120), and the locking device (300) can be inserted into the third notches (151) to relatively fix the vehicle frame (120) and the rotating disc (150).

8. The shock absorbing wheel of claim 7, wherein, The locking device (300) comprises a fixed seat (310), a reset spring (320) and a bolt (330), the fixed seat (310) is fixedly installed on the vehicle frame (120), the bolt (330) is penetratingly and rotatably connected to the fixed seat (310), the bolt (330) can be moved leftward to be inserted into the third notches (151) or moved rightward to be separated from the third notches (151), the reset spring (320) is sleeved on the bolt (330), the reset spring (320) continuously applies a leftward force to the bolt (330), and the right end of the bolt (330) is provided with a limiting rod (331) which can abut against the fixed seat (310) to limit the leftward movement of the bolt (330).

9. The shock absorbing wheel of claim 8, wherein, The right end of the fixed seat (310) is provided with a first groove (341) and a second groove (342), the groove bottom of the first groove (341) is located on the left side of the groove bottom of the second groove (342); when the limiting rod (331) abuts against the groove bottom of the first groove (341), the bolt (330) is inserted into the third notches (151); when the limiting rod (331) abuts against the groove bottom of the second groove (342), the bolt (330) is separated from the third notches (151).

10. The shock absorbing wheel of claim 1, wherein, The vehicle frame (120) is provided with a spring sheet (440), and the shock-absorbing wheel further comprises a brake device (400), the brake device (400) comprises a sub-frame (430), a second rotating shaft (410) and a brake pedal (420), the sub-frame (430) is slidingly connected to the vehicle frame (120) in the up-down direction, the connecting shaft (110) penetrates through the sub-frame (430), the second rotating shaft (410) is installed on the sub-frame (430), and the brake pedal (420) is rotatably connected to the second rotating shaft (410); the brake pedal (420) can be rotated to drive the spring sheet (440) to bend downward so that the spring sheet (440) is close to and attached to the vehicle wheel (100), or drive the spring sheet (440) to rebound and be away from the vehicle wheel (100).

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