Damping wheel

Abstract

The invention discloses a damping wheel. The damping wheel comprises a wheel body, 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] The invention relates to the technical field of wheels, and in particular to a shock-absorbing wheel. Background Art

[0002] Some furniture, such as tables, cabinets and chairs, are usually equipped with casters, which can support the furniture and facilitate its movement. At present, some casters have a shock-absorbing structure, which can play a role in shock absorption when the casters pass through uneven ground. The shock-absorbing structure of traditional casters mostly adopts a single-side shock-absorbing design or a multi-stage linkage structure. The former has a poor shock-absorbing effect, and the latter has a complex structure and cannot meet daily needs. Summary of the invention

[0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent. To this end, the present invention provides a shock absorbing wheel.

[0004] An embodiment of the present invention provides a shock absorbing wheel, the shock absorbing wheel comprising:

[0005] The wheel, the axis direction of which is the left-right direction;

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

[0007] The frame is provided with two long through holes extending in the up-down direction, the two long through holes are respectively located on the left and right sides of the wheel, the connecting shaft is passed through the long through holes and can move in the up-down direction relative to the frame;

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

[0009] The shock-absorbing wheel according to the embodiment of the present invention has at least the following technical effects: when the wheel vibrates after passing through an uneven ground, the shock-absorbing spring absorbs the kinetic energy and then transmits it to the frame, thereby reducing the vibration of the frame and improving the user experience. The two shock-absorbing devices of the shock-absorbing wheel are located on the left and right sides of the wheel, and a bilateral shock-absorbing structure is adopted. The combination of single-stage shock absorption and bilateral shock absorption makes the shock absorption effect stronger and the structure simpler, and avoids the use of a shock-absorbing structure in the front and rear directions, which increases the axle center distance and affects the life of the caster.

[0010] According to some embodiments of the present invention, the first seat has an inner cavity and an opening facing downward, the second seat has an inner cavity and an opening facing upward, 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 column is provided in the first seat, a second guide column is provided in the second seat, the axial directions of the first guide column and the second guide column are both up and down directions, the upper end of the shock-absorbing spring is sleeved on the first guide column, and the lower end of the shock-absorbing spring is sleeved on the second guide column.

[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 connected to the inner cavity of the first seat, and the side wall of the second seat is provided with a second notch connected to the inner cavity of the second seat.

[0014] According to some embodiments of the present invention, the shock-absorbing wheel also includes a mounting seat and a first rotating shaft, the mounting seat is located above the frame, one end of the first rotating shaft is fixedly mounted on the mounting seat, and the lower end of the first rotating shaft is passed through and rotatably connected to the 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, and the plurality of third notches are distributed circumferentially along the turntable; the shock-absorbing wheel also includes a locking device, which is installed on the frame, and the locking device can be inserted into the third notches to relatively fix the frame and the turntable.

[0016] According to some embodiments of the present invention, the locking device includes a fixed seat, a return spring and a latch, the fixed seat is fixedly installed on the frame, the latch is penetrated and rotatably connected to the fixed seat, the latch 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 latch, the return spring continuously applies a leftward force to the latch, and a limit rod is provided at the right end of the latch, the limit rod can abut against the fixed seat to limit the movement of the latch 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, and the bottom of the first groove is located on the left side 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 is disengaged from the third notch.

[0018] According to some embodiments of the present invention, the frame is provided with a spring sheet, the shock-absorbing wheel also includes a brake device, the brake device includes a sub-frame, a second rotating shaft and a brake pedal, the sub-frame is slidably connected to the frame in the up and down directions, the connecting shaft is passed through the sub-frame, the second rotating shaft is installed on the sub-frame, and the brake pedal is rotatably connected to the second rotating shaft. The brake pedal can rotate to drive the spring sheet to bend downward so that the spring sheet is close to and fits the wheel, or drive the spring sheet to rebound and move away from the wheel.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

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

[0022] Figure 2 is an exploded view of a shock absorbing wheel according to some embodiments of the present invention;

[0023] Figure 3 is a cross-sectional view of a shock absorbing wheel according to some embodiments of the present invention;

[0024] Figure 4 is a partial structural exploded diagram of a shock absorbing wheel in some embodiments of the present invention;

[0025] Figure 5 It is a partial structural exploded diagram of the shock-absorbing wheel in some embodiments of the present invention.

[0026] Figure Number:

[0027] Wheel 100; connecting shaft 110; frame 120; long through hole 121; positioning hole 131; positioning block 132; mounting seat 140; first rotating shaft 141; rotating disk 150; third notch 151;

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

[0029] Locking device 300; fixing seat 310; return spring 320; latch 330; limiting rod 331; first groove 341; second groove 342;

[0030] Braking device 400 ; second rotating shaft 410 ; brake pedal 420 ; sub-frame 430 ; spring sheet 440 . DETAILED DESCRIPTION

[0031] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0032] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0033] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0034] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0035] The embodiments of the present invention are further described below in conjunction with the accompanying drawings.

[0036] According to some embodiments of the present invention, referring to Figures 1 to 5The shock-absorbing wheel includes a wheel 100, a connecting shaft 110, a frame 120 and two shock-absorbing devices 200. The axial direction of the wheel 100 is the left-right direction. The connecting shaft 110 is passed through and rotatably connected to the wheel 100, and the wheel 100 and the connecting shaft 110 are coaxially arranged. The frame 120 is provided with two long through holes 121 extending in the up-down direction, and the two long through holes 121 are respectively located on the left and right sides of the wheel 100. The connecting shaft 110 is passed through the long through holes 121 and can move in the up-down direction relative to the frame 120, that is, the frame 120 can move in the up-down direction relative to the connecting shaft 110. The two shock absorbing devices 200 are respectively located on the left and right sides of the wheel 100, and the two shock absorbing devices 200 correspond to the two long through holes 121 one by one. The shock absorbing device 200 includes a first seat 220, a second seat 230 and a shock absorbing 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 absorbing spring 210 is connected to the first seat 220, and the lower end of the shock absorbing spring 210 is connected to the second seat 230.

[0037] It can be understood that when the wheel 100 vibrates after passing through uneven ground, the shock-absorbing spring 210 can absorb kinetic energy and then transfer it to the frame 120. At this time, the frame 120 moves in the up and down directions relative to the connecting shaft 110, and the connecting shaft 110 moves along the extension direction of the long 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, and a bilateral shock absorbing structure is adopted. The combination of single-stage shock absorption and bilateral shock absorption makes the shock absorption effect better and the structure simpler, and avoids the use of a shock absorption structure in the front and rear directions, which increases the axle center distance and affects the life of the caster.

[0039] According to some embodiments of the present invention, referring to Figure 2 and Figure 3 The first seat 220 has an inner cavity and an opening facing downward, the second seat 230 has an inner cavity and 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, thereby strengthening the connection stability between the shock-absorbing spring 210 and the first seat 220 and the second seat 230 respectively to avoid separation; and facilitating the mutual assembly of the three.

[0040] According to some embodiments of the present invention, referring to Figure 2 and Figure 3A first guide column 221 is provided in the first seat 220, and a second guide column 231 is provided in the second seat 230. The axis directions of the first guide column 221 and the second guide column 231 are both in the 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. The first guide column 221 and the second guide column 231 can play a role in positioning and limiting the shock absorbing spring 210, which is convenient for assembly and prevents the shock absorbing spring 210 from running off.

[0041] According to some embodiments of the present invention, referring to Figure 2 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, the first seat 220 is fixedly connected to the frame 120 by bolts, and 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 the assembly efficiency.

[0042] According to some embodiments of the present invention, referring to Figure 2 The side wall of the first seat 220 is provided with a first notch 222 connected to the inner cavity of the first seat 220, and the side wall of the second seat 230 is provided with a second notch 232 connected to the inner cavity of the second seat 230. Through the first notch 222 and the second notch 232, it can be checked whether the shock-absorbing spring 210 is assembled correctly, and the position of the shock-absorbing spring 210 can be adjusted to avoid jamming during the disassembly and assembly process.

[0043] According to some embodiments of the present invention, referring to Figures 1 to 3 The shock-absorbing wheel also includes 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 mounted on the mounting seat 140, and the lower end of the first rotating shaft 141 is passed through and rotatably connected to the frame 120. The mounting seat 140 is installed on furniture such as tables and cabinets to facilitate the movement of the furniture. The frame 120 can rotate around the axis direction of the first rotating shaft 141 to realize the steering of the wheel 100.

[0044] According to some embodiments of the present invention, referring to Figure 1 , Figure 4 and Figure 5The lower end of the first rotating shaft 141 is fixedly connected with a rotating disk 150, and the side wall of the rotating disk 150 is provided with a plurality of third notches 151, and the plurality of third notches 151 are distributed along the circumference of the rotating disk 150. The shock-absorbing wheel also includes a locking device 300, which is installed on the frame 120. The locking device 300 can be inserted into the third notches 151 to relatively fix the frame 120 and the rotating disk 150. When the locking device 300 is inserted into one of the third notches 151 of the rotating disk 150, the locking device 300 prevents the rotating disk 150 from continuing to rotate, so that the frame 120 and the rotating disk 150 are relatively fixed, and then the frame 120 and the mounting seat 140 are relatively fixed. 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 is separated from the third notch 151, the wheel 100 can turn again.

[0045] Preferably, refer to Figure 2 , Figure 3 and Figure 5 The locking device 300 includes a fixing seat 310, a return spring 320 and a latch 330. The fixing seat 310 is fixedly mounted on the vehicle frame 120. The latch 330 is inserted through and rotatably connected to the fixing seat 310. The latch 330 is inserted through the vehicle frame 120. The latch 330 can slide relative to the fixing seat 310 in the left-right direction and rotate around its own axis. The latch 330 can move to the left and insert into the third notch 151 or move to the right and leave the third notch 151. The return spring 320 is sleeved on the latch 330. The left end of the return spring 320 is connected to the latch 330. The right end of the return spring 320 is connected to the fixing seat 310. The return spring 320 is always in a compressed state, that is, the return spring 320 continuously applies a leftward force to the latch 330. The right end of the latch 330 is provided with a limit rod 331. The limit rod 331 can abut against the fixing seat 310 to limit the latch 330 from continuing to move to the left.

[0046] Further, see Figure 2 , Figure 3 and Figure 5 The right end of the fixing seat 310 has a first groove 341 and a second groove 342, and the bottom of the first groove 341 is located on the left side of the bottom of the second groove 342; when the limiting rod 331 abuts against the bottom of the first groove 341, the latch 330 is inserted into the third notch 151; when the limiting rod 331 abuts against the bottom of the second groove 342, the latch 330 is disengaged from the third notch 151.

[0047] It is understood that when locking is required, the latch 330 is rotated so that the limiting rod 331 is aligned with the first groove 341. Under the action of the return spring 320, the latch 330 moves to the left and is inserted into the third notch 151. The limiting rod 331 enters the first groove 341 and abuts against the groove bottom of the first groove 341. The first groove 341 restricts the limiting rod 331 from moving further to the left, thereby completing the locking. When unlocking is required, the latch 330 is pulled to the right to overcome the force of the return spring 320, and the latch 330 is rotated so that the limiting rod 331 is aligned with the second groove 342. Under the action of the return spring 320, the latch 330 moves to the left. The limiting rod 331 enters the second groove 342 and abuts against the groove bottom of the second groove 342. The second groove 342 restricts the limiting rod 331 from moving further to the left, so that the latch 330 cannot move to the left and be inserted into the third notch 151.

[0048] According to some embodiments of the present invention, referring to Figure 1 , Figure 2 and Figure 4 The frame 120 is provided with a spring piece 440, and the shock-absorbing wheel also includes a brake device 400. The brake device 400 includes a sub-frame 430, a second rotating shaft 410 and a brake pedal 420. The axial direction of the second rotating shaft 410 is the left-right direction. The sub-frame 430 is slidably connected to the frame 120 along the up-down direction. The connecting shaft 110 is penetrated by the sub-frame 430, and the second rotating shaft 410 is installed on the sub-frame 430. The brake pedal 420 is rotatably connected to the second rotating shaft 410. The brake pedal 420 can rotate to drive the spring piece 440 to bend downward so that the spring piece 440 is close to the wheel 100, or drive the spring piece 440 to rebound and move away from the wheel 100.

[0049] It can be understood that the connecting shaft 110 is simultaneously passed through the wheel 100 and the sub-frame 430, and the connecting shaft 110 is passed through the long through hole 121 of the frame 120. When the wheel 100 is vibrated, the frame 120 moves in the up-down direction relative to the connecting shaft 110, and the frame 120 slides in the up-down direction relative to the sub-frame 430, ensuring that the distance between the spring piece 440 of the sub-frame 430 and the wheel 100 in the up-down direction remains unchanged, thereby ensuring that the spring piece 440 can fully fit the surface of the wheel 100 during braking and thus brake, and avoiding the spring piece 440 following the frame 120 away from or close to the wheel 100, thereby affecting the braking work.

[0050] In the description of this specification, the description with reference to the term "some embodiments" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

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

Claims

1. A shock absorbing wheel, characterized in that: include: The wheel (100) has an axis direction in the left-right direction; A connecting shaft (110), the connecting shaft (110) passing through and rotatably connected to the wheel (100), the wheel (100) and the connecting shaft (110) being coaxially arranged; The frame (120) is provided with two long through holes (121) extending in the up-down direction, the two long through holes (121) are respectively located on the left and right sides of the wheel (100), and the connecting shaft (110) is passed through the long through holes (121) and can move in the up-down direction relative to the frame (120); A shock absorbing device (200), wherein the two shock absorbing devices (200) are respectively located on the left and right sides of the wheel (100), and the shock absorbing device (200) comprises a first seat (220), a second seat (230) and a shock absorbing spring (210), wherein the first seat (220) is fixedly mounted on the vehicle frame (120), and the second seat (230) is fixedly mounted on the connecting shaft (110), and the upper end of the shock absorbing spring (210) is connected to the first seat (220), and the lower end of the shock absorbing spring (210) is connected to the second seat (230).

2. The shock absorbing wheel according to claim 1, characterized in that: The first seat (220) has an inner cavity and an opening facing downward, the second seat (230) has an inner cavity and 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 according to claim 2, characterized in that: A first guide column (221) is provided in the first seat (220), and a second guide column (231) is provided in the second seat (230). The axial directions of the first guide column (221) and the second guide column (231) are both in the 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 according to claim 1, characterized in that: The vehicle 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) is fixedly connected to the vehicle frame (120) by bolts.

5. The shock absorbing wheel according to claim 2, characterized in that: The side wall of the first seat (220) is provided with a first notch (222) connected to the inner cavity of the first seat (220), and the side wall of the second seat (230) is provided with a second notch (232) connected to the inner cavity of the second seat (230).

6. The shock absorbing wheel according to claim 1, characterized in that: The shock-absorbing wheel further comprises a mounting seat (140) and a first rotating shaft (141); the mounting seat (140) is located above the vehicle frame (120); one end of the first rotating shaft (141) is fixedly mounted on the mounting seat (140); and the lower end of the first rotating shaft (141) is passed through and rotatably connected to the vehicle frame (120).

7. The shock absorbing wheel according to claim 6, characterized in that: The lower end of the first rotating shaft (141) is fixedly connected to a rotating disk (150), and a side wall of the rotating disk (150) is provided with a plurality of third notches (151), and the plurality of third notches (151) are distributed along the circumference of the rotating disk (150); the shock-absorbing wheel also includes a locking device (300), and the locking device (300) is 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 disk (150).

8. The shock absorbing wheel according to claim 7, characterized in that: The locking device (300) comprises a fixing seat (310), a return spring (320) and a latch (330); the fixing seat (310) is fixedly mounted on the vehicle frame (120); the latch (330) is passed through and rotatably connected to the fixing seat (310); the latch (330) can move leftward to be inserted into the third notch (151) or move rightward to be separated from the third notch (151); the return spring (320) is sleeved on the latch (330); the return spring (320) continuously applies a leftward force to the latch (330); a limiting rod (331) is provided at the right end of the latch (330); the limiting rod (331) can abut against the fixing seat (310) to limit the movement of the latch (330) to the left.

9. The shock absorbing wheel according to claim 8, characterized in that: The right end of the fixing seat (310) has a first groove (341) and a second groove (342), and 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 latch (330) is inserted into the third notch (151); when the limiting rod (331) abuts against the groove bottom of the second groove (342), the latch (330) is disengaged from the third notch (151).

10. The shock absorbing wheel according to claim 1, characterized in that: The frame (120) is provided with a spring sheet (440), and the shock-absorbing wheel also includes a brake device (400), and the brake device (400) includes a sub-frame (430), a second rotating shaft (410) and a brake pedal (420), the sub-frame (430) is slidably connected to the frame (120) along the up and down directions, the connecting shaft (110) is passed 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), and the brake pedal (420) can rotate to drive the spring sheet (440) to bend downward so that the spring sheet (440) is close to and fits the wheel (100), or drive the spring sheet (440) to rebound and move away from the wheel (100).

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