Anti-static trundle

Abstract

The utility model discloses an anti-static trundle which comprises a support, a trundle body arranged on the support, a tire arranged on the outer side of the trundle body and a bearing arranged between the trundle body and the support, a groove is formed in the inner side of the tire, a conductive disc in contact connection with the bearing is arranged in the groove, and a guide hole is formed in the trundle body. One end of the guide hole extends to the conductive disc, the other end of the guide hole extends to the inner side of the tire, a conductor is arranged in the guide hole, one end of the conductor extends out of the guide hole to be connected to the conductive disc, the other end of the conductor extends out of the guide hole to be in contact connection with the inner side face of the tire, and a conductive chain in contact with the ground is arranged on the support. In this way, in the rotating process of the trundle, static electricity generated on the tire can be transmitted back to the ground through the electric conductor via the electric conduction disc, the bearing, the support and the electric conduction chain, so that the static electricity is effectively released, and the influence of the static electricity on equipment and products is effectively avoided. And the conductive body is fixed through the conductive disc, so that the influence on the electrostatic eliminating effect due to looseness of the conductive body is avoided.

Description

Technical Field

[0001] This utility model relates to the technical field of casters, and in particular to an anti-static caster. Background Technology

[0002] Casters are widely used in various equipment and transportation vehicles. In some special environments, such as electronics manufacturing workshops and chemical workshops, static electricity may damage equipment and products. Traditional casters are prone to static electricity accumulation during use and cannot effectively release it, which adversely affects the normal operation of equipment and product quality. Patent application No. 202110832223.4 discloses a conductive and antistatic wheel that uses a conductor to guide static electricity generated by the tire to the bearing, and then releases the static electricity through the caster frame. However, there is no good contact between the conductor and the tire, and between the conductor and the bearing. During the rotation of the caster, the conductor may deform or loosen. At the same time, there is no external grounding device on the caster frame, resulting in an unsatisfactory static electricity removal effect. Utility Model Content

[0003] Therefore, the purpose of this utility model is to provide an antistatic caster with good static elimination effect.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] An antistatic caster includes a bracket, a wheel body mounted on the bracket, a tire mounted on the outer side of the wheel body, and a bearing disposed between the wheel body and the bracket. The inner side of the tire has a groove, and a conductive disc is disposed within the groove, contacting and connecting with the bearing. The wheel body has a guide hole, one end of which extends to the conductive disc, and the other end extends to the inner side of the tire. A conductor is disposed within the guide hole, one end of which extends out of the guide hole and connects to the conductive disc, and the other end extends out of the guide hole and contacts and connects with the inner side of the tire. A conductive chain is provided on the bracket, contacting the ground.

[0006] In a preferred embodiment of this utility model, a positioning groove communicating with the guide hole is provided on the surface of the wheel body and located inside the tire, and one end of the conductor is disposed in the positioning groove.

[0007] In a preferred embodiment of this utility model, the conductive disk is provided with a threaded hole communicating with the guide hole, one end of the conductor extends into the threaded hole, and a locking screw is provided in the threaded hole to lock the conductor in the threaded hole.

[0008] In a preferred embodiment of this utility model, the guide hole is U-shaped, and the included angle between the guide hole and the positioning groove is 90 degrees.

[0009] In a preferred embodiment of this utility model, the outer side of the wheel body is provided with a plurality of ribs, and the guide hole passes through the bottom of the ribs.

[0010] In a preferred embodiment of this utility model, the guide hole includes a first guide hole and a second guide hole adjacent to the first guide hole. The positioning groove is disposed between the first guide hole and the second guide hole and connects the two. One end of the conductor is fixed to the conductive disk, and the other end passes through the first guide hole, the positioning groove and the second guide hole in sequence and is fixed to the conductive disk.

[0011] In a preferred embodiment of this utility model, the bracket includes a fixed shaft for assembling a wheel body and a fixed nut connected to the fixed shaft by a threaded connection. One end of the conductive chain is connected to a collar that can be fitted onto the fixed shaft, and the collar is disposed between the fixed nut and the bracket.

[0012] In a preferred embodiment of this utility model, the bracket, bearing, conductive disk, and conductor are all made of metal materials, and the wheel is made of insulating material.

[0013] The beneficial effects of this utility model are as follows: The caster includes a bracket, a wheel body, a tire, and a bearing. A groove is provided on the inner side of the tire, and a conductive disc, which contacts and connects to the bearing, is located within the groove. A guide hole is provided inside the wheel body, with one end extending to the conductive disc and the other end extending to the inner side of the tire. A conductor is also provided within the guide hole, with one end extending out of the guide hole and connecting to the conductive disc, and the other end extending out of the guide hole and contacting the inner side of the tire. A conductive chain, in contact with the ground, is also provided on the bracket. In this way, during the rotation of the caster, static electricity generated on the tire can be transferred through the conductor and the conductive disc to the bearing, then from the bearing to the bracket, and finally back to the ground through the conductive chain on the bracket, thus effectively releasing static electricity and preventing its impact on equipment and products. Furthermore, the conductive disc secures the conductor, preventing deformation or loosening of the conductor from causing poor contact between it and the bearing, which could result in static electricity remaining on the tire. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the present invention;

[0015] Figure 2 This is a cross-sectional view of the wheel body of this utility model;

[0016] Figure 3This is an assembly diagram of the wheel body of this utility model. Detailed Implementation

[0017] The technical solutions in the embodiments of this utility model will now be clearly and completely described in conjunction with the accompanying drawings.

[0018] Reference Figures 1 to 3 An anti-static caster includes a bracket 1, a wheel body 2 mounted on the bracket 1, a tire 3 located on the outer side of the wheel body 2, and a bearing 4 positioned between the wheel body 2 and the bracket 1. The tire 3 has a groove 31 on its inner side, within which a conductive disc 5 is disposed and connected to the bearing 4. The wheel body 2 has a guide hole 21, one end of which extends to the conductive disc 5, and the other end extends to the inner side of the tire 3. A conductor 6 is disposed within the guide hole 21, one end of which extends out of the guide hole 21 and connects to the conductive disc 5, and the other end extends out of the guide hole 21 and connects to the inner side of the tire 3. The bracket 1 has a conductive chain 7 in contact with the ground, which can be fixed to the bracket 1 by welding or threaded connection. During caster rotation, static electricity generated on the tire 3 can be transferred through the conductor 6 and the conductive disc 5 to the bearing 4, then from the bearing 4 to the bracket 1, and finally back to the ground through the conductive chain 7 on the bracket 1, thus effectively releasing static electricity and preventing its impact on equipment and products. Furthermore, the conductive plate 5 is used to fix the conductive body 6 to prevent it from not making good contact with the bearing 4 due to deformation or loosening of the conductive body 6, which would result in static electricity remaining on the tire 3.

[0019] In this design, a positioning groove 22 communicating with the guide hole 21 is provided on the surface of the wheel body 2 and located inside the tire 3. One end of the conductor 6 is disposed in the positioning groove 22, and the outer part of the conductor 6 protrudes from the positioning groove 22. This ensures good contact between the conductor 6 and the inner side of the tire 3, guaranteeing smooth electrostatic conduction. At the same time, the positioning groove 22 facilitates the installation and fixing of the conductor 6, improving the overall stability of the caster.

[0020] In this solution, the conductive disk 5 is provided with a threaded hole 51 that communicates with the guide hole 21. One end of the conductor 6 extends into the threaded hole 51. A locking screw 52 is provided in the threaded hole 51 to lock the conductor 6 into the threaded hole 51, thereby locking and fixing the conductor 6 onto the conductive disk 5 to prevent it from deforming or loosening.

[0021] In this design, the guide hole 21 is U-shaped, allowing the conductor 6 to be smoothly inserted into and fixed within it. Furthermore, the angle between the guide hole 21 and the positioning groove 22 is 90 degrees, which further secures the conductor 6 within the guide hole 21, effectively preventing deformation and loosening.

[0022] In this design, the outer side of the wheel body 2 is provided with several ribs 25, and the guide hole 21 passes through the bottom of the ribs 25, thereby reducing the influence of the guide hole 21 on the wheel body 2 and preventing it from cracking.

[0023] In this scheme, the guide hole 21 includes a first guide hole 23 and a second guide hole 24 adjacent to the first guide hole 23. The positioning groove 22 is disposed between the first guide hole 23 and the second guide hole 24 and connects the two. One end of the conductor 6 is fixed on the conductive disk 5, and the other end passes through the first guide hole 23, the positioning groove 22 and the second guide hole 24 in sequence and is fixed on the conductive disk 5. This allows the conductor 6 to make good contact with the tire 3 and to be firmly fixed on the conductive disk 5.

[0024] In a preferred embodiment of this utility model, the bracket 1 includes a fixed shaft 8 for assembling the wheel body 2 and a fixed nut 9 connected to the fixed shaft 8 by a threaded connection. One end of the conductive chain 7 is connected to a collar 10 that can be fitted onto the fixed shaft 8. The collar 10 is disposed between the fixed nut 9 and the bracket 1, thereby fixing the conductive chain 7 onto the bracket 1.

[0025] In this design, the bracket 1, bearing 4, conductive disk 5, and conductor 6 are all made of metal, while the wheel 2 is made of insulating material.

[0026] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. An anti-static caster, comprising a support (1), a wheel body (2) arranged on the support (1), a tire (3) arranged on the outer side of the wheel body (2), and a bearing (4) arranged between the wheel body (2) and the support (1), characterized in that, The tire (3) is provided with a recess (31) on the inner side, and the recess (31) is provided with a conductive disc (5) in contact with the bearing (4). The wheel body (2) is provided with a guide hole (21), one end of which extends to the conductive disc (5), and the other end extends to the inner side of the tire (3). The guide hole (21) is provided with a conductive body (6), one end of which extends out of the guide hole (21) and is connected to the conductive disc (5), and the other end extends out of the guide hole (21) and is in contact with the inner side of the tire (3). The bracket (1) is provided with a conductive chain (7) in contact with the ground.

2. The anti-static caster of claim 1, wherein, The surface of the wheel body (2) is provided with a positioning groove (22) in communication with the guide hole (21) on the inner side of the tire (3). One end of the conductive body (6) is arranged in the positioning groove (22).

3. The anti-static caster of claim 2, wherein, The conductive disc (5) is provided with a threaded hole (51) in communication with the guide hole (21), and one end of the conductive body (6) extends into the threaded hole (51). The threaded hole (51) is provided with a locking screw (52) for locking the conductive body (6) in the threaded hole (51).

4. The anti-static caster of claim 3, wherein, The shape of the guide hole (21) is U-shaped, and the included angle formed between the guide hole (21) and the positioning groove (22) is 90 degrees.

5. The anti-static caster of claim 4, wherein, The outer side of the wheel body (2) is provided with a plurality of ribs (25), and the guide hole (21) passes through the lower part of the ribs (25).

6. The anti-static caster of claim 4, wherein, The guide hole (21) includes a first guide hole (23) and a second guide hole (24) adjacent to the first guide hole (23). The positioning groove (22) is arranged between the first guide hole (23) and the second guide hole (24) and communicates them. One end of the conductive body (6) is fixed to the conductive disc (5), and the other end passes through the first guide hole (23), the positioning groove (22) and the second guide hole (24) in sequence and is fixed to the conductive disc (5).

7. An anti-static caster according to any one of claims 1 to 6, wherein, The bracket (1) includes a fixed shaft (8) for assembling the wheel body (2) and a fixed nut (9) connected to the fixed shaft (8) by a threaded connection. One end of the conductive chain (7) is connected to a sleeve ring (10) that can be sleeved on the fixed shaft (8). The sleeve ring (10) is arranged between the fixed nut (9) and the bracket (1).

8. The anti-static caster of claim 7, wherein, The bracket (1), bearing (4), conductive disc (5) and conductive body (6) are all made of metal material, and the wheel body (2) is made of insulating material.

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