Trundle capable of quickly adjusting height

Abstract

The utility model discloses a caster capable of quickly adjusting the height, which comprises a support provided with a height adjusting device, and the height adjusting device comprises a height adjusting component arranged on the support; the height adjusting device is used for adjusting the distance between the bracket and the wheel carrier; and the wheel body is rotatably arranged on the wheel frame. The caster solves the problem that an existing caster design lacks a height adjusting function and cannot adapt to working environments with different heights.

Description

Technical Field

[0001] The utility model relates to the technical field of casters, in particular to a caster with quick height adjustment. Background Art

[0002] In modern industry and daily life, casters are a common mobility aid and are widely used in many fields such as medical equipment, furniture, logistics and transportation. The height adjustment function is an important aspect of caster design, which allows users to adjust the working height of the caster according to different usage environments and needs. Many existing caster designs lack height adjustment function and cannot adapt to working environments of different heights. Utility Model Content

[0003] The utility model provides a caster with quick height adjustment, so as to solve the problem that the existing caster design lacks the height adjustment function and cannot adapt to working environments with different heights.

[0004] In order to solve the above problems, the utility model adopts the following technical solutions:

[0005] The embodiment of the utility model provides a caster with quick height adjustment, comprising:

[0006] The bracket is provided with a height adjustment device, wherein the height adjustment device comprises a height adjustment component arranged on the bracket;

[0007] The wheel frame, the height adjustment device is used to adjust the distance between the bracket and the wheel frame;

[0008] The wheel body is rotatably arranged on the wheel frame.

[0009] According to some embodiments of the utility model, the height adjustment device includes a screw and a connecting seat connected to the wheel frame, the connecting seat matches the bracket, one end of the screw is connected to the height adjustment component, and the other end passes through the screw hole of the connecting seat and is threadedly connected to the bracket.

[0010] According to some embodiments of the present invention, the connecting seat includes an extension seat for extending the length of the screw hole.

[0011] According to some embodiments of the utility model, the extension seat includes a flange seat for fixing to the connecting seat, the flange seat is provided with a screw hole column for extending the length of the screw hole, and the screw hole is arranged on the surface of the flange seat and passes through the flange seat and the screw hole column.

[0012] According to some embodiments of the utility model, the height-adjusting component is a hand-tightened plum blossom cap, and the hand-tightened plum blossom cap is connected to the screw rod through a first fixing member.

[0013] According to some embodiments of the present invention, the wheel frame is rotatably disposed on the height adjustment device.

[0014] According to some embodiments of the present utility model, the wheel frame includes a first rotating device, and the first rotating device is fixed on the connecting seat.

[0015] According to some embodiments of the present invention, the wheel frame further includes a second rotating device.

[0016] According to some embodiments of the present utility model, the connecting seat includes a sleeve for accommodating the second rotating device, and the sleeve is provided with a step cylinder for accommodating the first rotating device.

[0017] According to some embodiments of the utility model, the bracket is provided with a first fixing seat, and the wheel frame is provided with a second fixing seat matching with the first fixing seat, and the first fixing seat and the second fixing seat can be connected by a second fixing member.

[0018] The utility model has at least the following beneficial effects: by means of a height adjustment device, a height adjustment component is arranged on the bracket, and the distance between the bracket and the wheel frame can be changed through the height adjustment component, so that the height of the caster can be adjusted, so that the caster can adapt to working environments at different heights. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of an embodiment of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of a height adjustment device according to an embodiment of the utility model;

[0021] Figure 3 A side view of a height adjustment device according to an embodiment of the utility model;

[0022] Figure 4 This is a cross-sectional view of a height adjustment device according to an embodiment of the utility model;

[0023] Figure 5 A schematic diagram of an extension seat according to an embodiment of the utility model;

[0024] Figure 6 A schematic diagram of a connecting socket according to an embodiment of the utility model;

[0025] Figure 7 This is a schematic diagram of a hand-tightened plum blossom seat according to an embodiment of the utility model;

[0026] Figure 8 The utility model is a schematic diagram of a wheel frame according to an embodiment of the present invention. DETAILED DESCRIPTION

[0027] The utility model provides the following description with reference to the accompanying drawings to help fully understand the various embodiments of the utility model as defined by the claims and their equivalents. The description includes various specific details to help understanding, but these details should be regarded as exemplary only. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the various embodiments described herein without departing from the scope and spirit of the utility model.

[0028] In the description of the present invention, descriptions of 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 drawings and are only for the convenience of describing the present invention and simplifying the description. They 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.

[0029] It will be understood that when one element (eg, a first element) is “connected” to another element (eg, a second element), the element may be directly connected to the other element or an intervening element (eg, a third element) may be present between the element and the other element.

[0030] The embodiment of the utility model provides a caster with quick height adjustment, comprising:

[0031] The bracket 1 is provided with a height adjustment device 12, and the height adjustment device 12 includes a height adjustment component 121 arranged on the bracket 1;

[0032] The wheel frame 4, the height adjustment device 12 is used to adjust the distance between the bracket 1 and the wheel frame 4;

[0033] The wheel body 3 is rotatably arranged on the wheel frame 4.

[0034] The height adjustment device 12 is arranged on the bracket 1, including a height adjustment component 121. The height adjustment component 121 increases or decreases the height of the bracket 1 through rotation or telescopic action, thereby adjusting the overall height of the caster; the wheel frame 4 is connected to the bracket 1, and under the action of the height adjustment device 12, the distance between the bracket 1 and the wheel frame 4 can be adjusted to adapt to working platforms or grounds of different heights; the wheel body 3 is rotatably arranged on the wheel frame 4 to reduce friction and improve movement efficiency.

[0035] What needs to be understood here is that when the external components carried by the casters are unbalanced, the height of each caster can be adjusted by the caster height adjustment device 12 to adjust the balance of the external components carried by the casters; when the height of the external components carried by the casters is insufficient, the height of the external components carried by the casters can be increased by adjusting the distance between the bracket 1 and the wheel frame 4 by the caster height adjustment device 12.

[0036] In a scenario where the casters need to be folded, the height of the casters after adjustment may exceed the height of the external components supported by the casters designed to accommodate the casters, resulting in the casters being unable to be folded. At this time, the height adjustment device 12 can be used to reduce the height of the casters so that the casters can be folded and placed.

[0037] Furthermore, the height adjustment device 12 includes a screw rod 201 and a connecting seat 202 connected to the wheel frame 4, the connecting seat 202 matches the bracket 1, one end of the screw rod 201 is connected to the height adjustment component 121, and the other end passes through the threaded hole of the connecting seat 202 and is threadedly connected to the bracket 1.

[0038] The connection base 202 is designed with a threaded hole to adapt to the thread of the screw rod 201. The screw rod 201 passes through the bracket 1 and is connected to the connection base 202. The distance between the bracket 1 and the wheel frame 4 is adjusted by rotating the screw rod 201. When the screw rod 201 rotates, due to the helix angle of the thread, the bracket 1 moves up and down along the screw rod 201 to achieve height adjustment. The rotation of the screw rod 201 can be achieved by a manual knob, a wrench or other mechanical devices. The connection base 202 matches the bracket 1 so that when the screw rod 201 rotates, the connection base 202 will not rotate relative to the bracket 1.

[0039] A locking mechanism, such as a nut or a locking clip, is designed on the screw rod 201 to fix the screw rod 201 at a desired height to prevent sliding during use.

[0040] Furthermore, the connecting seat 202 includes an extension seat 203 for extending the length of the screw hole.

[0041] The extension seat 203 is arranged on the connecting seat 202, and its main function is to increase the depth of the threaded hole of the connecting seat 202, so as to provide a longer threaded section of the screw 201, which helps to improve the stability and adjustment accuracy of the screw 201 during rotation. The extension seat 203 and the connecting seat 202 can be connected by threads or by a connecting piece.

[0042] Furthermore, the extension seat 203 includes a flange seat 2031 for fixing to the connecting seat 202, and the flange seat 2031 is provided with a screw hole column 2032 for extending the length of the screw hole. The screw hole is arranged on the surface of the flange seat 2031 and passes through the flange seat 2031 and the screw hole column 2032.

[0043] The extension seat 203 is fixed to the connecting seat 202 via the flange seat 2031. The flange seat 2031 is a part of the extension seat 203 and has a larger end face, providing a stable contact surface to ensure a firm connection between the extension seat 203 and the connecting seat 202. The design of the flange seat 2031 not only enhances the stability of the connection, but also disperses the load through its larger surface area and reduces local stress concentration. The setting of the screw hole column 2032 effectively extends the length of the screw hole, which means that a longer screw rod 201 can be used, thereby providing a larger adjustment range and stronger fixing ability.

[0044] In some embodiments, the height-adjusting component 121 is a hand-tightened plum blossom cap 204 .

[0045] Furthermore, the hand-tightened plum blossom cap 204 is connected to the screw rod 201 through a first fixing member 205 .

[0046] A hand-tightened plum blossom cap 204 is provided at the top of the screw rod 201, so that the user can adjust the position of the screw rod 201 directly by hand. The hand-tightened plum blossom cap 204 is connected to the screw rod 201 through a first fixing member 205. The function of the first fixing member 205 is to ensure that the plum blossom cap will not separate from the screw rod 201 during the adjustment process to maintain the integrity of the structure. The design of the hand-tightened plum blossom cap 204 makes the height adjustment more direct and simple, and the user can adjust it without using tools. By using a first fixing member 205 with a higher hardness, the hardness of the entire connection area can be increased, reducing damage caused by wear or pressure during use.

[0047] In some embodiments, the wheel carrier 4 is rotatably disposed on the height adjustment device 12 .

[0048] The wheel frame 4 itself can rotate, which increases the flexibility of the caster and allows movement in different directions without changing the direction of the caster. The wheel frame 4 is rotatably arranged on the height adjustment device 12, which may mean that the wheel frame 4 can rotate freely on the height adjustment device 12 while maintaining connection with the bracket 1.

[0049] In some embodiments, the wheel frame 4 includes a first rotating device 206 , and the first rotating device 206 is fixed on the connecting seat 202 .

[0050] The first rotating device 206 includes a bearing or other mechanical structure that allows the wheel frame 4 to rotate. The first rotating device 206 is fixed to the connecting seat 202 by welding, threaded connection, snap-fit ​​or other mechanical fixing methods. The fixing of the first rotating device 206 helps to improve the overall stability of the wheel frame 4 and reduce shaking or deviation during use.

[0051] Furthermore, the wheel frame 4 also includes a second rotating device 207 .

[0052] The addition of the second rotating device 207 provides additional rotation capability based on the first rotating device 206, ensuring the adaptability and reliability of the caster.

[0053] In some embodiments, the connection seat 202 includes a sleeve 208 for accommodating the second rotating device 207 , and a step cylinder 209 for accommodating the first rotating device 206 is provided on the sleeve 208 .

[0054] In some embodiments, a first fixing seat 210 is disposed on the bracket 1, and a second fixing seat 211 matching with the first fixing seat 210 is disposed on the rotating frame. The first fixing seat 210 and the second fixing seat 211 can be connected via a second fixing member.

[0055] After the height of the caster is adjusted to the desired position, in order to prevent the height of the caster from changing, the first fixing seat 210 and the second fixing seat 211 may be connected by a second fastener to fix the height of the caster to prevent the height from changing.

[0056] The terms and words used in the above description and claims are not limited to the literal meanings, but are only used by the applicant to enable a clear and consistent understanding of the utility model. Therefore, it should be clear to those skilled in the art that the above description of various embodiments of the utility model is provided only for illustration, and not for limiting the utility model as defined by the attached claims and their equivalents.

Claims

1. A quick height adjustment caster, characterized in that: include: A support (1) is provided with a height adjustment device (12), wherein the height adjustment device (12) comprises a height adjustment component (121) arranged on the support (1); A wheel frame (4), wherein the height adjustment device (12) is used to adjust the distance between the bracket (1) and the wheel frame (4); The wheel body (3) is rotatably arranged on the wheel frame (4).

2. The quick height adjustment caster according to claim 1, characterized in that: The height adjustment device (12) comprises a screw rod (201) and a connecting seat (202) connected to the wheel frame (4); the connecting seat (202) matches the bracket (1); one end of the screw rod (201) is connected to the height adjustment component (121), and the other end passes through a screw hole of the connecting seat (202) and is threadedly connected to the bracket (1).

3. The quick height adjustment caster according to claim 2, characterized in that: The connecting seat (202) comprises an extension seat (203) for extending the length of the screw hole.

4. The quick height adjustment caster according to claim 3, characterized in that: The extension seat (203) comprises a flange seat (2031) for being fixed to the connection seat (202); the flange seat (2031) is provided with a screw hole column (2032) for extending the length of the screw hole; the screw hole is arranged on the surface of the flange seat (2031) and passes through the flange seat (2031) and the screw hole column (2032).

5. A quick height adjustment caster according to any one of claims 1 to 4, characterized in that: The height adjustment component (121) is a hand-tightened plum blossom cap (204).

6. A quick height adjustment caster according to any one of claims 1 to 4, characterized in that: The wheel carrier (4) is rotatably arranged on the height adjustment device (12).

7. A quick height adjustment caster according to any one of claims 2 to 4, characterized in that: The wheel frame (4) comprises a first rotating device (206), and the first rotating device (206) is fixed on the connecting seat (202).

8. The quick height adjustment caster according to claim 7, characterized in that: The wheel frame (4) also includes a second rotating device (207).

9. The quick height adjustment caster according to claim 8, characterized in that: The connecting seat (202) comprises a sleeve (208) for accommodating the second rotating device (207), and a step cylinder (209) for accommodating the first rotating device (206) is provided on the sleeve (208).

10. The quick height adjustment caster according to any one of claims 1 to 4, characterized in that: The bracket (1) is provided with a first fixing seat (210), and the wheel frame (4) is provided with a second fixing seat (211) matched with the first fixing seat (210), and the first fixing seat (210) and the second fixing seat (211) can be connected via a second fixing member.

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