Universal wheel

Abstract

The utility model discloses a universal wheel. The universal wheel comprises a mounting seat, a roller and a brake wrench, the roller is rotationally connected to the mounting base, and an annular channel and a plurality of limiting grooves are formed in the side, close to the mounting base, of the roller; an arc-shaped elastic limiting through hole is formed in the mounting seat, one end of the elastic limiting through hole is a locking position, the other end of the elastic limiting through hole is an unlocking position, and a positioning part with reduced width is formed between the locking position and the unlocking position; the middle of the brake wrench is pivoted to the mounting base, one end of the brake wrench is a driving part, the other end of the brake wrench is provided with a brake rod, the brake rod penetrates through the elastic limiting through hole, and the driving part drives the brake rod of the clamping part to slide and push the positioning part to achieve switching of the brake rod between the locking position and the unlocking position; and when the brake rod is located at the unlocking position, the brake rod returns to the annular channel from the limiting groove. While effective braking is guaranteed, the assembly process is simplified, and the manufacturing cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of casters, in particular to a universal wheel. Background Art

[0002] Universal wheels, also known as movable casters or swivel casters, have a unique rotating structure that allows 360-degree free rotation in the horizontal direction, greatly improving the flexibility and mobility of the equipment or objects equipped with them. The brake function of universal wheels is an important aspect of their design. It is mainly used to provide braking effect when needed to ensure that the equipment or objects equipped with universal wheels can be stably parked or decelerated.

[0003] The existing universal wheel brake structure usually adopts a spring buckle combination, which has a complex structure and involves the coordination of multiple parts, which not only has a high manufacturing cost, but also increases the risk of brake failure. In addition, due to the cumbersome assembly process, it is not conducive to maintenance and replacement. Utility Model Content

[0004] The utility model aims to provide a universal wheel which simplifies the assembly process and reduces the manufacturing cost while ensuring effective braking.

[0005] To achieve the above-mentioned purpose, the solution of the utility model is: a universal wheel, comprising a mounting seat, a roller and a brake wrench; the roller is rotatably connected to the mounting seat, and the roller is provided with an annular channel and a plurality of limit grooves on one side close to the mounting seat; the mounting seat is provided with an arc-shaped elastic limit through hole at a position corresponding to the limit groove and the annular channel, one end of the elastic limit through hole is a locking position, and the other end of the elastic limit through hole is an unlocking position, and a positioning portion with a reduced width is formed between the locking position and the unlocking position; the middle part of the brake wrench is pivotally connected to the mounting seat, one end of the brake wrench is a driving part, and the other end of the brake wrench is a clamping part, and a brake rod is provided on the clamping part, and the brake rod passes through the elastic limit through hole, and the driving part drives the brake rod of the clamping part to slide and push the positioning part to realize the switching of the brake rod between the locking position and the unlocking position, and when the brake rod is in the locking position, the brake rod enters the limit groove from the annular channel, and when the brake rod is in the unlocking position, the brake rod retreats from the limit groove to the annular channel.

[0006] Preferably, the mounting seat comprises an arc-shaped cover and an elastic support plate, the elastic support plate is radially provided on the inner arc surface of the arc-shaped cover, and the elastic support plate is provided with an arc-shaped elastic limiting through hole axially along the arc-shaped cover.

[0007] In a preferred embodiment, a clearance opening is provided on the arc-shaped cover, a clearance through hole is provided on the elastic support plate between the elastic limiting through hole and the clearance opening, an arch-bridge-shaped positioning portion is formed between the clearance through hole and the elastic limiting through hole, and the middle part of the brake wrench is pivotally connected to the clearance opening.

[0008] The preferred embodiment further includes a brake shaft, a brake shaft hole is provided in the middle of the brake wrench, a first connecting ear is provided at the opening, a first through hole is provided on the first connecting ear, the brake shaft passes through the first through hole of the first connecting ear and the brake shaft hole of the brake wrench to pivot the brake wrench to the arc cover.

[0009] Preferably, the clamping portion at one end of the brake wrench is provided with a second connecting ear, the second connecting ear is provided with a second through hole, and the brake rod passes through the second through hole of the second connecting ear and the elastic limiting through hole of the elastic support plate.

[0010] The preferred embodiment further includes a transverse axis, a transverse axis through hole is axially opened on the elastic support plate along the arc cover, a mounting hole is provided at the center of the roller, and the transverse axis passes through the transverse axis through hole and is rotatably connected to the mounting hole of the roller.

[0011] In a preferred embodiment, a first necking section is provided on the transverse axis, a first anti-slipping position is provided in the mounting hole of the roller, and the transverse axis is rotatably connected to the roller through the first necking section and the first anti-slipping position.

[0012] In a preferred embodiment, a plurality of positioning pieces are evenly distributed around the center of the roller on the inner peripheral wall of the roller near the arc-shaped cover, and the limiting groove is formed between adjacent positioning pieces.

[0013] The preferred embodiment further comprises a connecting shaft, wherein the connecting shaft is rotatably connected to the mounting seat, and the mounting seat is connected to other objects via the connecting shaft.

[0014] In a preferred embodiment, one end of the connecting shaft is provided with a straight-grooved tooth, the other end of the connecting shaft is provided with a second necking section, and a second anti-slipping position is provided on the mounting seat. One end of the connecting shaft is connected to the object through the straight-grooved tooth, and the other end of the connecting shaft is rotatably connected to the mounting seat through the second necking section and the second anti-slipping position.

[0015] After adopting the above scheme, the beneficial effect of the utility model is that the utility model controls the brake lever to slide and push the positioning part of the elastic limiting through hole to realize the switching between the locking position and the unlocking position through the brake wrench, so that the brake lever can enter the limiting groove from the annular channel or retreat from the limiting groove to the annular channel, thereby realizing the locking or unlocking of the roller. It has a simple structure, is easy to operate, and is conducive to processing and manufacturing and cost control. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the utility model from another perspective;

[0018] Figure 3 It is a schematic diagram of the explosion structure of the utility model;

[0019] Figure 4 It is a schematic diagram of the explosion structure of the utility model from another perspective;

[0020] Figure 5 It is a left side view of the utility model with the left side roller removed;

[0021] Figure 6 It is a right side view of the utility model with the right side roller removed;

[0022] Figure 7 It is a right side view of the mounting seat of the utility model;

[0023] Figure 8 It is a schematic diagram of the brake rod of the utility model with the mounting seat removed and entering the limiting groove;

[0024] Fig. 9 It is a cross-sectional view of the roller of the utility model connected to the horizontal axis;

[0025] Fig.10 It is a cross-sectional view of the connecting shaft of the utility model connected to the mounting seat.

[0026] Description of labels:

[0027] 1. Mounting seat; 10. Arc cover; 101. Clearance opening; 1011. First connecting ear; 1012. First through hole; 11. Elastic support plate; 110. Elastic limiting through hole; 1100. Locking position; 1101. Unlocking position; 1102. Positioning part; 111. Clearance through hole; 112. Transverse axis through hole; 12. Second anti-slipping position; 2. Roller; 20. Annular channel; 21. Limiting groove; 210. Positioning sheet; 22. Mounting hole; 220. First anti-slipping position; 3. Brake wrench; 31. Brake shaft hole; 32. Driving part; 33. Clamping part; 331. Second connecting ear; 332. Second through hole; 4. Brake lever; 5. Brake shaft; 6. Transverse axis; 61. First necking section; 7. Connecting shaft; 71. Straight-grained spline; 72. Second necking section. DETAILED DESCRIPTION

[0028] The utility model is now further described in conjunction with the accompanying drawings and specific implementation methods.

[0029] This embodiment provides a universal wheel, such as Figures 1 to 10As shown, it includes a mounting base 1, a roller 2 and a brake wrench 3; the roller 2 is rotatably connected to the mounting base 1, and the roller 2 is provided with an annular channel 20 and a plurality of limiting grooves 21 on one side close to the mounting base 1; the mounting base 1 is provided with an arc-shaped elastic limiting through hole 110 at a position corresponding to the limiting groove 21 and the annular channel 20, one end of the elastic limiting through hole 110 is a locking position 1100, and the other end of the elastic limiting through hole 110 is an unlocking position 1101, and a positioning space with a reduced width is formed between the locking position 1100 and the unlocking position 1101. Part 1102; the middle part of the brake wrench 3 is pivotally connected to the mounting seat 1, one end of the brake wrench 3 is a driving part 32, and the other end of the brake wrench 3 is a clamping part 33, and the clamping part 33 is provided with a brake rod 4, and the brake rod 4 passes through the elastic limiting through hole 110, and the driving part 32 drives the brake rod 4 of the clamping part 33 to slide and push the positioning part 1102 to realize the switching of the brake rod 4 between the locking position 1100 and the unlocking position 1101. When the brake rod 4 is in the locking position 1100, the brake rod 4 enters the limiting groove 21 from the annular channel 20, such as Figure 8 As shown, when the brake lever 4 is located at the unlocking position 1101 , the brake lever 4 retreats from the limiting groove 21 back to the annular channel 20 .

[0030] In this embodiment, by operating the brake wrench 3, the roller 2 can be quickly locked and unlocked, so that the device can quickly stop moving when needed, which improves the safety of use. The brake rod 4 can enter the limiting groove 21 of the roller 2 when it is in the locking position 1100, ensuring the stability and reliability during braking. Since the limiting through hole of this embodiment is elastically set, a positioning portion 1102 with a reduced width is formed between the locking position 1100 and the unlocking position 1101, so the brake rod 4 can push the positioning portion 1102 when switching between the locking position 1100 and the unlocking position 1101. At the same time, the positioning portion 1102 can continuously position the brake rod 4, so that the brake rod 4 can be stably maintained in the locking position 1100 or the unlocking position 1101, and the design is ingenious. In this embodiment, a plurality of limiting grooves 21 are provided on the inner peripheral wall of the roller 2 close to the mounting seat 1, and the area between the limiting groove 21 and the center of the roller 2 is an annular channel 20. In other embodiments, the limiting groove 21 can also be set near the center of the roller 2, and the inner wall of the roller 2 can be set as an annular channel 20. Such a setting can realize the interchange of the locking position 1100 and the unlocking position 1101 to meet different needs.

[0031] like Figure 6As shown, the mounting seat 1 includes an arc-shaped cover 10 and an elastic support plate 11. The inner arc surface of the arc-shaped cover 10 is radially provided with the elastic support plate 11, and the elastic support plate 11 is provided with the arc-shaped elastic limiting through hole 110 along the axial direction of the arc-shaped cover 10. The arc-shaped cover 10 of this embodiment can be any shape of a semicircle, a shape larger than a semicircle, or a shape smaller than a semicircle. It has a certain support strength, provides stable support for the roller 2 and the brake mechanism, and makes the roller 2 more stable when rotating. The elastic support plate 11 makes the elastic limiting through hole 110 have a certain elasticity, which can produce a certain deformation when the brake rod 4 is pushed, so as to meet the switching of the brake rod 4 between the locking position 1100 and the unlocking position 1101, and the structure is simple.

[0032] like Figure 3 and Figure 6 As shown, the arc-shaped cover 10 is provided with a clearance opening 101, and the elastic support plate 11 is provided with a clearance through hole 111 between the elastic limiting through hole 110 and the clearance opening 101, and a positioning portion 1102 in the shape of an arch bridge is formed between the clearance through hole 111 and the elastic limiting through hole 110, and the middle part of the brake wrench 3 is pivotally connected to the clearance opening 101. The clearance opening 101 and the clearance through hole 111 of this embodiment enable the brake wrench 3 to be installed on the arc-shaped cover 10 without occupying too much space. The positioning portion 1102 in the shape of an arch bridge is formed between the clearance through hole 111 and the elastic limiting through hole 110, which can position the brake lever 4 so that the brake lever 4 is stably maintained in the locking position 1100 or the unlocking position 1101, which is convenient to use.

[0033] like Figures 3 to 6 As shown, the present embodiment further includes a brake shaft 5, a brake shaft hole 31 is provided in the middle of the brake wrench 3, a first connecting ear 1011 is provided at the opening 101, a first through hole 1012 is provided on the first connecting ear 1011, the brake shaft 5 passes through the first through hole 1012 of the first connecting ear 1011 and the brake shaft hole 31 of the brake wrench 3 to pivot the brake wrench 3 on the arc cover 10, thereby enhancing stability. The brake wrench 3 is pivoted at the first connecting ear 1011 on the arc cover 10 through the brake shaft 5, so that the brake wrench 3 can be flexibly rotated, which is convenient for users to disassemble and maintain when needed.

[0034] like Figure 3 and Figure 4As shown, the clamping portion 33 at one end of the brake wrench 3 is provided with a second connecting ear 331, and the second connecting ear 331 is provided with a second through hole 332, and the brake rod 4 passes through the second through hole 332 of the second connecting ear 331 and the elastic limiting through hole 110 of the elastic support plate 11. In this embodiment, the brake rod 4 is used as a structure for controlling the universal wheel brake. The brake rod 4 is arranged at one end of the brake wrench 3 and passes through the elastic limiting through hole 110. The diameter of the brake rod 4 matches the width of the locking position 1100 and the unlocking position 1101 on the elastic limiting through hole 110 and is larger than the width of the positioning portion 1102, so that the brake wrench 3 can drive the brake rod 4 to push the positioning portion 1102 to realize the switching between the locking position 1100 and the unlocking position 1101, and the structure is simple and easy to use.

[0035] like Figure 3 As shown, the universal wheel 2 further comprises a transverse axis 6, a transverse axis through hole 112 is provided on the elastic support plate 11 along the axial direction of the arc-shaped cover 10, a mounting hole 22 is provided at the center of the roller 2, and the transverse axis 6 passes through the transverse axis through hole 112 and is rotatably connected to the mounting hole 22 of the roller 2. The transverse axis 6 of this embodiment passes through the transverse axis through hole 112 on the elastic support plate 11 and is rotatably connected to the mounting hole 22 of the roller 2, providing a stable support for the roller 2, ensuring that the roller 2 will not shake or deviate due to uneven force during rotation, and improving the overall stability of the universal wheel.

[0036] like Figure 3 and Fig. 9 As shown, the transverse shaft 6 is provided with a first necking section 61, and the mounting hole 22 of the roller 2 is provided with a first anti-slipping position 220, and the transverse shaft 6 is rotatably connected to the roller 2 through the first necking section 61 and the first anti-slipping position 220. In this embodiment, the first necking section 61 cooperates with the first anti-slipping position 220 to simplify the installation process of the roller 2, and the connection can be achieved by simply aligning the mounting hole 22 of the roller 2 with the first necking section 61 on the transverse shaft 6 and pressing it in forcefully, without the need for additional fixings or tools, and is easy to use.

[0037] like Figure 3 and Figure 4 As shown, in this embodiment, a plurality of positioning pieces 210 are evenly distributed around the center of the roller 2 on the inner peripheral wall of the roller 2 near the arc-shaped cover 10, and the limiting groove 21 is formed between adjacent positioning pieces 210. The positioning groove cooperates with the brake lever 4, and when the brake lever 4 is located at the locking position 1100, the brake lever 4 enters the positioning groove to achieve braking, and when the brake lever 4 is located at the unlocking position 1101, the brake lever 4 withdraws from the positioning groove, which is a clever design. In other embodiments, the number and position of the positioning pieces 210 can also be adjusted.

[0038] like Figures 1 to 6As shown, this embodiment further includes a connecting shaft 7, which is rotatably connected to the mounting base 1, and the mounting base 1 is connected to other objects through the connecting shaft 7. The rotatable connection of the connecting shaft 7 enables the universal wheel to rotate freely in multiple directions, further improving flexibility.

[0039] like Figures 1 to 6 , Fig.10 As shown, one end of the connecting shaft 7 is provided with a straight-grooved tooth 71, and the other end of the connecting shaft 7 is provided with a second necking section 72. The mounting seat 1 is provided with a second anti-slipping position 12. One end of the connecting shaft 7 is connected to the object through the straight-grooved tooth 71, and the other end of the connecting shaft 7 is rotatably connected to the mounting seat 1 through the second necking section 72 and the second anti-slipping position 12. The second necking section 72 of the connecting shaft 7 in this embodiment cooperates with the second anti-slipping position 12 of the mounting seat 1, ensuring that the connecting shaft 7 can rotate on the mounting seat 1, while making the installation process more convenient. One end of the connecting shaft 7 is provided with a straight-grooved tooth 71, and when installed, the straight-grooved tooth 71 is connected to the mounting hole 22 on other objects, and the straight-grooved tooth 71 and the hole wall of the mounting hole 22 are pressed against each other, thereby playing a fixing role. Through the connecting shaft 7, the universal wheel provided in this embodiment can be connected to other objects such as storage boxes and storage cabinets, but is not limited thereto. The structure is simple, practical and convenient, and it is conducive to production and manufacturing and cost control.

[0040] The use process of the utility model is as follows:

[0041] The user first places the brake wrench 3 at the yield opening 101 of the arc cover 10, passes the brake shaft 5 through the first through hole 1012 of the first connecting ear 1011 of the arc cover 10 and the brake shaft hole 31 of the brake wrench 3 to pivot the brake wrench 3 on the arc cover 10, and then passes the brake rod 4 through the second through hole 332 of the second connecting ear 331 and the elastic limiting through hole 110 of the elastic support plate 11.

[0042] The transverse axis 6 passes through the transverse axis through hole 112 of the elastic support plate 11. Since the first necking sections 61 are respectively provided at both ends of the transverse axis 6 and the first anti-slipping position 220 is provided in the mounting hole 22 of the roller 2, the mounting hole 22 of the roller 2 is aligned with the end of the transverse axis 6 and pressed in with force. The first necking section 61 is clamped in the first anti-slipping position 220, so that the roller 2 is rotatably connected to the transverse axis 6.

[0043] One end of the connecting shaft 7 is provided with a straight-grooved tooth 71, and the other end is provided with a second necking section 72. The mounting seat 1 is provided with a second anti-slipping position 12. The other end of the connecting shaft 7 is aligned with the second anti-slipping position 12 of the mounting seat 1 and pressed in forcefully. The second necking section 72 is engaged with the second anti-slipping position 12, so that the connecting shaft 7 is rotatably connected to the horizontal shaft 6. When the straight-grooved tooth 71 at one end of the connecting shaft 7 is inserted into the mounting hole 22 on other objects, the straight-grooved tooth 71 and the hole wall of the mounting hole 22 are pressed against each other, thereby playing a fixing role.

[0044] The driving part 32 of the brake wrench 3 drives the brake rod 4 of the clamping part 33 to slide and push the positioning part 1102 to realize the switching of the brake rod 4 between the locking position 1100 and the unlocking position 1101. When the brake rod 4 is in the locking position 1100, the brake rod 4 enters the limiting groove 21 from the annular channel 20. When the brake rod 4 is in the unlocking position 1101, the brake rod 4 retreats from the limiting groove 21 to the annular channel 20 to realize braking and unlocking.

[0045] The directional terms mentioned in this specification are defined relative to the structures shown in the drawings. They are relative concepts and may change accordingly according to different locations and different usage conditions. Therefore, these or other directional terms should not be interpreted as restrictive terms.

[0046] The above description is only a preferred embodiment of the present utility model and is not a limitation on the design of the present case. Any equivalent changes made based on the key design of the present case shall fall within the protection scope of the present case.

Claims

1. A universal wheel, characterized in that: Includes mount, roller and brake wrench; The roller is rotatably connected to the mounting seat, and a circular channel and a plurality of limit grooves are provided on one side of the roller close to the mounting seat; The mounting seat is provided with an arc-shaped elastic limiting through hole at a position corresponding to the limiting groove and the annular channel, one end of the elastic limiting through hole is a locking position, and the other end of the elastic limiting through hole is an unlocking position, and a positioning portion with a reduced width is formed between the locking position and the unlocking position; The middle part of the brake wrench is pivotally connected to the mounting seat, one end of the brake wrench is a driving part, and the other end of the brake wrench is a clamping part. A brake rod is provided on the clamping part, and the brake rod passes through the elastic limiting through hole. The driving part drives the brake rod of the clamping part to slide and push the positioning part to realize the switching of the brake rod between the locked position and the unlocked position. When the brake rod is in the locked position, the brake rod enters the limiting groove from the annular channel. When the brake rod is in the unlocked position, the brake rod retreats from the limiting groove to the annular channel.

2. A universal wheel as claimed in claim 1, characterized in that: The mounting seat comprises an arc-shaped cover and an elastic support plate. The elastic support plate is radially arranged on the inner arc surface of the arc-shaped cover, and the elastic support plate is provided with an arc-shaped elastic limiting through hole axially along the arc-shaped cover.

3. A universal wheel as claimed in claim 2, characterized in that: The arc-shaped cover is provided with a clearance opening, the elastic support plate is provided with a clearance through hole between the elastic limiting through hole and the clearance opening, an arch bridge-shaped positioning portion is formed between the clearance through hole and the elastic limiting through hole, and the middle part of the brake wrench is pivotally connected to the clearance opening.

4. A universal wheel as claimed in claim 3, characterized in that: It also includes a brake shaft, a brake shaft hole is opened in the middle of the brake wrench, a first connecting ear is provided at the opening, a first through hole is opened on the first connecting ear, the brake shaft passes through the first through hole of the first connecting ear and the brake shaft hole of the brake wrench to pivot the brake wrench on the arc cover.

5. A universal wheel as claimed in claim 4, characterized in that: A second connecting ear is provided at the clamping portion at one end of the brake wrench, a second through hole is provided on the second connecting ear, and the brake rod passes through the second through hole of the second connecting ear and the elastic limiting through hole of the elastic support plate.

6. The universal wheel according to claim 2, characterized in that: It also includes a transverse axis, a transverse axis through hole is opened on the elastic support plate along the axial direction of the arc cover, a mounting hole is arranged at the center of the roller, and the transverse axis passes through the transverse axis through hole and is rotatably connected to the mounting hole of the roller.

7. A universal wheel as claimed in claim 6, characterized in that: The transverse shaft is provided with a first necking section, and a first anti-slipping position is provided in the mounting hole of the roller. The transverse shaft is rotatably connected with the roller through the first necking section and the first anti-slipping position.

8. The universal wheel according to claim 2, characterized in that: A plurality of positioning pieces are evenly distributed around the center of the roller on the inner peripheral wall of the roller near the arc-shaped cover, and the limiting groove is formed between adjacent positioning pieces.

9. The universal wheel according to claim 1, characterized in that: It also includes a connecting shaft, which is rotatably connected to the mounting seat, and the mounting seat is connected to other objects through the connecting shaft.

10. The universal wheel according to claim 9, characterized in that: One end of the connecting shaft is provided with a straight-grooved tooth, the other end of the connecting shaft is provided with a second necking section, and a second anti-slipping position is provided on the mounting seat. One end of the connecting shaft is connected to the object through the straight-grooved tooth, and the other end of the connecting shaft is rotatably connected to the mounting seat through the second necking section and the second anti-slipping position.

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