Noise-free trundle

Abstract

The utility model provides a noise-free trundle which comprises a trundle body and a TPR mute rubber sleeve arranged on the surface of the trundle body in a sleeving mode, and the trundle body is provided with a wheel shaft used for being connected with a supporting frame. The bearing seat is arranged at the top of the supporting frame; the connecting shaft is fixed to the top of the supporting frame and movably assembled with the bearing base through a bearing. The brake unit is arranged on the inner side of the supporting frame and used for braking the wheel body; the universal unit is arranged in the bearing seat and is used for rotationally positioning the connecting shaft; and the execution unit is used for synchronously driving the brake unit and the universal unit to brake. According to the wheel body, the upper brake pad and the lower brake pad are attached to each other to limit the connecting shaft through the arranged universal unit, so that the supporting frame and the bearing seat are relatively fixed, the wheel body can be limited and fixed at any position, the use requirements of the wheel body under different conditions are met, and the braking effect of the wheel body is better.

Description

Technical Field

[0001] The utility model relates to the field of luggage cases, in particular to a noiseless caster. Background Art

[0002] Luggage, also known as travel suitcase or trolley case, is a type of luggage that is used to carry items when going out. Luggage can also be divided into hard-shell luggage and soft-shell luggage based on the outer shell. Hard-shell luggage is more resistant to falling and is suitable for luggage that needs more protection. Soft-shell luggage is usually lighter than hard-shell luggage and is made of more flexible material. However, the zipper of a soft-shell luggage is more likely to burst due to too many items inside.

[0003] Luggage cases can usually be transported in a portable manner because they are usually equipped with corresponding casters for walking. In order to reduce the noise as much as possible during walking on the road, most existing casters are covered with TPR rubber sleeves to achieve better noise reduction and silencing.

[0004] However, in actual application, it is found that most of the casters on some suitcases have universal functions and braking functions, but most of the universal functions cannot be directional. This results in that after the casters are braked, the casters can still rotate freely, so the braking effect on the suitcase itself is poor, especially when the ground is tilted. It is necessary to brake multiple casters one by one in sequence before the suitcase itself can be effectively stationary, which makes the operation more cumbersome.

[0005] Therefore, we have made improvements on this and proposed a noiseless caster. Utility Model Content

[0006] The utility model aims to provide a noiseless caster, which solves the problem that the existing noiseless casters have poor braking effect when in use.

[0007] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0008] A noiseless caster, comprising a wheel body and a TPR silent rubber sleeve sleeved on the surface of the wheel body, wherein the wheel body has a wheel axle for connecting with a support frame, and further comprising:

[0009] A bearing seat, which is arranged on the top of the supporting frame;

[0010] A connecting shaft, which is fixed to the top of the support frame and movably assembled with the bearing seat through a bearing;

[0011] A brake unit, which is arranged on the inner side of the support frame and is used to brake the wheel body;

[0012] A universal unit, which is arranged inside the bearing seat and is used to rotate and position the connecting shaft;

[0013] The execution unit is used to synchronously drive the brake unit and the universal unit to brake.

[0014] As a preferred technical solution of the present application, the brake unit includes a brake disc slidably arranged on the inner side of the support frame and a brake pad fixed to the bottom of the brake disc;

[0015] Among them, springs connected to the inner wall of the support frame are fixed on both sides of the bottom of the brake disc, and a resistance and limiting protrusion is also provided below the brake disc.

[0016] As a preferred technical solution of the present application, the universal unit comprises an upper brake pad and a lower brake pad which are jointly sleeved on a connecting shaft and slidably arranged thereon;

[0017] The upper brake pad is slidably arranged on the inner side of the bearing seat, and the lower brake pad is fixed on the connecting shaft.

[0018] As a preferred technical solution of the present application, the universal unit also includes two springs arranged on both sides of the top of the upper brake pad and fixed to the side walls of the bearing seat, and the side walls of the bearing seat are also provided with two abutment limiting protrusions.

[0019] As a preferred technical solution of the present application, a pedal 1 is fixed on the brake disc, and a pedal 2 is fixed on the upper brake pad;

[0020] The pedal 2 includes a platform 1 and a platform 2.

[0021] As a preferred technical solution of the present application, the execution unit includes a driving ring sleeved on the periphery of the bearing seat and a side frame connected to both sides of the driving ring and slidably assembled with the outer side of the support frame.

[0022] As a preferred technical solution of the present application, the drive ring is located above platform one and pedal one.

[0023] Compared with the prior art, the utility model has the following beneficial effects:

[0024] In the scheme of this application:

[0025] 1. Through the universal unit, the upper brake pad and the lower brake pad are fitted together to form a limit on the connecting shaft, so that the support frame and the bearing seat remain relatively fixed, so that the wheel body can be limited and fixed at any position to meet its use requirements in different situations and achieve better braking effect;

[0026] At the same time, through the cooperation of the execution unit, when the drive ring is stepped on, pedal two and pedal one move downward synchronously, thereby driving the wheel body for rotational braking and universal braking, thereby greatly improving the braking effect of the suitcase and facilitating the actual use and operation of the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic diagram of the structure of the noiseless caster provided for this application;

[0028] Figure 2 A schematic diagram of the side structure of the noiseless caster provided in this application;

[0029] Figure 3 A partial structural schematic diagram of the noiseless caster provided for this application;

[0030] Figure 4 A schematic cross-sectional view of the noiseless caster provided in this application;

[0031] Figure 5 The noiseless casters provided for this application Figure 4 Enlarged structural diagram at A in the middle.

[0032] Indicated in the figure:

[0033] 1. Wheel body; 2. Brake unit; 3. Universal unit; 4. Actuator unit;

[0034] 10. TPR silent rubber sleeve; 11. axle; 12. support frame; 13. bearing seat; 14. connecting shaft;

[0035] 21. brake disc; 22. brake pad; 23. spring 1; 24. contact limit convex particle 1;

[0036] 31. Upper brake pad; 32. Lower brake pad; 33. Spring 2; 34. Stop limit convex 2; 35. Pedal 2;

[0037] 350, platform one; 351, platform two;

[0038] 40. Drive ring; 41. Side frame. DETAILED DESCRIPTION

[0039] To make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments.

[0040] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the present invention to be protected, but merely represents some embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0042] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0043] In the description of the present utility model, it should be noted that the orientation or position relationship indicated by the terms "upper", "lower", etc. is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the invention product is usually placed when in use, or the orientation or position relationship commonly understood by those skilled in the art. Such terms are only for the convenience of describing the present utility model 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 cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0044] like Figure 1-Figure 5 As shown, the present embodiment proposes a noiseless caster, comprising a wheel body 1 and a TPR silent rubber sleeve 10 sleeved on the surface of the wheel body 1. By setting the TPR silent rubber sleeve 10 on the wheel body 1, the noise reduction effect of the caster when it contacts the ground during walking is effectively improved. The wheel body 1 has a wheel axle 11 for connecting to a support frame 12. The wheel body 1 can rotate freely on the inner side of the support frame 12 through the action of the wheel axle 11 to meet its actual mobile use needs. It also includes: a bearing seat 13, which is arranged on the top of the support frame 12, a connecting shaft 14, which is fixed to the top of the support frame 12 and movably assembled with the bearing seat 13 through a bearing; a brake unit 2, which is arranged on the inner side of the support frame 12 for braking the wheel body 1; a universal unit 3, which is arranged inside the bearing seat 13 for rotationally positioning the connecting shaft 14; an execution unit 4, which is used to synchronously drive the brake unit 2 and the universal unit 3 for braking;

[0045] The brake unit 2 includes a brake disc 21 slidably arranged on the inner side of the support frame 12 and a brake pad 22 fixed to the bottom of the brake disc 21, wherein springs 23 connected to the inner wall of the support frame 12 are fixed on both sides of the bottom of the brake disc 21, and a resisting limit convex particle 24 is also provided below the brake disc 21. The brake pad 22 on the brake disc 21 is supported by the spring 23. Figure 4 The wheel body 1 shown below corresponding to the wheel body has a certain height gap;

[0046] The universal unit 3 includes an upper brake pad 31 and a lower brake pad 32 which are sleeved together and slidably mounted on the connecting shaft 14, wherein the upper brake pad 31 is slidably mounted on the inner side of the bearing seat 13, and the lower brake pad 32 is fixed on the connecting shaft 14;

[0047] The universal unit 3 further includes springs 33 disposed on both sides of the top of the upper brake pad 31 and fixed to the side wall of the bearing seat 13. The side wall of the bearing seat 13 is also provided with a second contact limiting convex particle 34. Through the support of the springs 33, the upper brake pad 31 has a certain height gap with the lower brake pad 32 in a natural state. When the upper brake pad 31 and the lower brake pad 32 contact each other, the wheel body 1 can be limited and fixed in the axial direction.

[0048] A pedal 1 25 is fixed on the brake disc 21, and a pedal 2 35 is fixed on the upper brake pad 31. The pedal 2 35 has a platform 1 350 and a platform 2 351;

[0049] The execution unit 4 includes a driving ring 40 sleeved on the outer periphery of the bearing seat 13 and a side frame 41 connected to both sides of the driving ring 40 and slidably assembled with the outer side of the support frame 12. The driving ring 40 is located above the platform 1 350 and the pedal 1 25.

[0050] By stepping on the pedal 1 25, the brake disc 21 thereon is moved toward the direction of the wheel body 1, so that the brake disc 21 and the brake pad 22 thereon are closely attached to the surface of the wheel body 1. During the movement of the brake disc 21, the spring 1 23 thereon is also compressed synchronously. When the brake pad 22 contacts the surface of the wheel body 1, the two sides of the brake disc 21 contact with the corresponding contact limiting protrusion 1 24, so that the contact limiting protrusion 1 24 forms a limiting effect on the brake disc 21 after braking. At this time, the relative contact force between the contact limiting protrusion 1 24 and the brake disc 21 can overcome the elastic force of the spring 1 23 to form a stable limiting effect.

[0051] By stepping on the second pedal 35, the upper brake pad 31 thereon slides toward the direction of the lower brake pad 32, so that the upper brake pad 31 and the lower brake pad 32 are in close contact with each other, thereby forming a limiting effect on the wheel body 1, so that it can no longer perform universal rotation. Similar to the brake unit 2, when forming a limiting effect, the second contact limiting protrusion 34 also forms a conflict with the outer side of the corresponding upper brake pad 31, and overcomes the elastic force of the second spring 33 to ensure the axial position of the wheel body 1.

[0052] When the position of the caster installed on the suitcase needs to be limited, the driving ring 40 can be directly stepped on to synchronously drive the pedal 1 25 and the pedal 2 35 to slide, thereby limiting the sliding of the wheel body 1 and limiting the axial rotation of the wheel body 1, further ensuring the stability of the suitcase after positioning, and facilitating the actual operation of the user.

[0053] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the above specific implementation methods. Therefore, any modification or equivalent replacement of the present invention; and all technical solutions and improvements thereof that do not depart from the spirit and scope of the invention are included in the scope of the claims of the present invention.

Claims

1. A noiseless caster, characterized in that: The invention comprises a wheel body (1) and a TPR sound-proof rubber sleeve (10) sleeved on the surface of the wheel body (1), wherein the wheel body (1) has a wheel axle (11) for connecting to a support frame (12), and further comprises: A bearing seat (13) is arranged on the top of the supporting frame (12); A connecting shaft (14) is fixed to the top of the support frame (12) and movably assembled with the bearing seat (13) through a bearing; A brake unit (2), which is arranged on the inner side of the support frame (12) and is used to brake the wheel body (1); A universal unit (3) disposed inside the bearing seat (13) and used for rotationally positioning the connecting shaft (14); The execution unit (4) is used to synchronously drive the brake unit (2) and the universal unit (3) to perform braking.

2. A noiseless caster according to claim 1, characterized in that: The brake unit (2) comprises a brake disc (21) slidably arranged on the inner side of the support frame (12) and a brake pad (22) fixed to the bottom of the brake disc (21); Wherein, springs (23) connected to the inner wall of the support frame (12) are fixed on both sides of the bottom of the brake disc (21), and a resisting and limiting convex particle (24) is also provided below the brake disc (21).

3. The noiseless caster according to claim 2, characterized in that: The universal unit (3) comprises an upper brake pad (31) and a lower brake pad (32) which are sleeved together on a connecting shaft (14) which is slidably mounted thereon; The upper brake pad (31) is slidably arranged on the inner side of the bearing seat (13), and the lower brake pad (32) is fixed on the connecting shaft (14).

4. The noiseless caster according to claim 3, characterized in that: The universal unit (3) also includes two springs (33) arranged on both sides of the top of the upper brake pad (31) and fixed to the side wall of the bearing seat (13), and the side wall of the bearing seat (13) is also provided with two abutment and limiting protrusions (34).

5. The noiseless caster according to claim 4, characterized in that: A pedal 1 (25) is fixed on the brake disc (21), and a pedal 2 (35) is fixed on the upper brake pad (31); The pedal 2 (35) has a platform 1 (350) and a platform 2 (351).

6. The noiseless caster according to claim 5, characterized in that: The execution unit (4) comprises a driving ring (40) sleeved on the periphery of the bearing seat (13) and a side frame (41) connected to both sides of the driving ring (40) and slidably assembled with the outer side of the support frame (12).

7. The noiseless caster according to claim 6, characterized in that: The driving ring (40) is located above the platform one (350) and the pedal one (25).

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