Wheel set braking structure and carrying device

Abstract

The utility model discloses a wheel set braking structure and a carrying device.The wheel set braking structure comprises a connecting pipe, a lining, a wheel shaft, a braking piece, a traction device and a traction piece, the traction piece is pulled through the traction device to drive the braking piece to move in the lining towards the direction close to a wheel, and the braking piece is clamped and meshed with the wheel shaft; the wheel shaft is locked to prevent the wheels from rotating, and the braking effect is achieved. When the brake piece moves in the direction away from the wheel, the brake piece is disengaged from the wheel shaft, and the wheel can rotate freely. Compared with the prior art, the wheel set braking structure is simple in structure and easy to assemble, production cost is saved, the structure is stable and firm and not prone to damage, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to a wheel set braking structure and a carrying device. Background Art

[0002] Existing transport devices, such as baby strollers, pet strollers, disabled strollers, luggage carts, etc., all require a braking structure to switch the transport device between a braking state and a driving state. However, the braking structure used in the existing transport devices has many parts and a complex structure, which is not only costly but also easy to be damaged and malfunction.

[0003] It can be seen that whether it is possible to provide an improved wheel set braking structure and a carrying device based on the deficiencies in the prior art has become a technical problem that needs to be solved urgently by those skilled in the art. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the defects in the prior art and provide a wheel set braking structure and a carrying device.

[0005] The utility model solves the above technical problems through the following technical solutions:

[0006] A wheel set braking structure, characterized by comprising:

[0007] Connecting pipe;

[0008] A bushing, fixedly installed in the connecting pipe;

[0009] A wheel axle is rotatably mounted in the bushing, and the axial direction of the wheel axle is a first direction;

[0010] a brake member, movably and non-rotatably mounted in the bushing, the brake member being configured to clamp the wheel axle;

[0011] A traction device, arranged in the connecting pipe;

[0012] A traction member, one end of which is connected to the traction device and the other end of which is connected to the brake member;

[0013] The traction device drives the brake member to move in the bushing along the first direction or against the first direction through the traction member.

[0014] Preferably, a protrusion extending along the first direction is provided on the inner side wall of the bushing;

[0015] A guide groove extending along a first direction is arranged on the outer side wall of the brake member, and the size of the guide groove is slightly larger than the size of the protruding portion, so that the protruding portion can be slidably arranged in the guide groove without rotating.

[0016] Preferably, it also includes:

[0017] The elastic return member is arranged in the bushing and is located on the path of the brake member moving along the first direction.

[0018] Preferably, the wheel axle is provided with a first clamping plane extending along the first direction;

[0019] The brake component is provided with a receiving groove for receiving the wheel axle, and a second clamping plane extending along the first direction is provided at a position of the receiving groove corresponding to the first clamping plane.

[0020] Preferably, the first clamping plane does not protrude from the wheel axle.

[0021] Preferably, the traction device is a motor.

[0022] A transport device, characterized in that it comprises the above-mentioned wheel set braking structure, and the transport device also comprises wheels, and the wheels are installed on the wheel axle and rotate synchronously with the wheel axle.

[0023] Preferably, the carrier is any one of the following:

[0024] Baby strollers, pet strollers, wheelchair strollers, luggage strollers.

[0025] On the basis of conforming to the common sense in the art, the above-mentioned preferred conditions can be arbitrarily combined to obtain the preferred embodiments of the present utility model.

[0026] The positive and progressive effect of the utility model is that the wheel set brake structure and the carrier device of the utility model include a connecting pipe, a bushing, a wheel axle, a brake part, a traction device and a traction part. The traction device pulls the traction part to drive the brake part to move in the bushing toward the wheel, and the brake part engages with the wheel axle, thereby locking the wheel axle to prevent the wheel from rotating, thereby achieving a braking effect. When the brake part moves away from the wheel, the brake part disengages from the wheel axle, and the wheel can rotate freely. Compared with the prior art, the wheel set brake structure of the utility model is simple in structure and easy to assemble, which not only saves production costs, but also has a stable and reliable structure, is not easy to damage, and has a longer service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a three-dimensional view of the wheel set brake structure of the preferred embodiment of the utility model after the connecting pipe is cut away.

[0028] Figure 2 This is a schematic diagram of the disassembled state of the wheel brake structure of the preferred embodiment of the utility model.

[0029] Figure 3 This is a front view of the wheel set brake structure of the preferred embodiment of the utility model after the connecting pipe is cut away.

[0030] Description of reference numerals:

[0031] Connecting pipe 1

[0032] Bushing 2

[0033] Raised portion 21

[0034] Axle 3

[0035] The first clamping plane 31

[0036] Brake parts 4

[0037] Guide groove 41

[0038] Traction device 5

[0039] Traction parts 6

[0040] Elastic reset element 7 DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0042] It should be noted that in the claims and description of this patent, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one" do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0043] like Figure 1-Figure 3 As shown, this embodiment discloses a wheel brake structure used in a transport device, and the transport device may be a baby stroller, a pet stroller, a wheelchair stroller, a luggage stroller, etc.

[0044] The wheel assembly braking structure of this embodiment includes a connecting pipe 1 , a bushing 2 , a wheel axle 3 , a brake member 4 , a traction device 5 and a traction member 6 .

[0045] The axle 3 is rotatably mounted in the bushing 2, and the axial direction of the axle 3 is the first direction, that is, the extension direction of the bushing 2 is also the first direction. One end of the axle 3 extends into the bushing 2, and a wheel is mounted on the other end of the axle 3, and the wheel is configured to rotate synchronously with the axle 3.

[0046] The connecting tube 1 is a connecting structure for connecting two wheels of a wheel set, and has a hollow passage extending along a first direction inside the connecting tube 1 to facilitate installation of other components inside the connecting tube 1 .

[0047] The interior of the bushing 2 also has a hollow passage, and is fixedly installed in the connecting pipe 1 so that the bushing 2 cannot rotate.

[0048] The brake member 4 is movably and non-rotatably mounted in the bushing 2. The bushing 2 is designed with features that match the brake member 4 so as to restrict the brake member 4 from rotating. The brake member 4 is configured to engage with the wheel axle 3. Specifically, in this embodiment, one end of the brake member 4 close to the wheel axle 3 is designed with features that can engage with features corresponding to one end of the wheel axle 3 close to the brake member 4. However, those skilled in the art should understand that the way the brake member 4 engages with the wheel axle 3 is not limited to this, as long as the brake member 4 can fix and stop the wheel axle 3.

[0049] The traction device 5 is arranged in the connecting pipe 1. In this embodiment, the traction device 5 is a motor, so that the movement of the brake member 4 can be controlled conveniently and labor-savingly.

[0050] One end of the traction member 6 is connected to the traction device 5, and the other end is connected to the brake member 4. The traction member 6 can be rigid or flexible.

[0051] In this embodiment, the traction device 5 drives the brake member 4 to move in the bushing 2 along the first direction or against the first direction through the traction member 6. When the brake member 4 moves against the first direction (moves toward the direction close to the wheel), the brake member 4 engages with the axle 3, thereby locking the axle 3 to prevent the wheel from rotating, thereby achieving a braking effect. When the brake member 4 moves along the first direction (moves toward the direction away from the wheel), the brake member 4 disengages from the axle 3, and the wheel can rotate freely.

[0052] Furthermore, the wheel assembly brake structure of this embodiment further includes an elastic reset member 7, which is arranged in the bushing 2 and is located on the path of the brake member 4 moving along the first direction. Therefore, when the brake member 4 moves along the first direction until it contacts the elastic reset member 7 and continues to move, the elastic reset member 7 will be compressed, and when the brake member 4 is no longer pulled, the elastic reset member 7 automatically rebounds, so that the brake member 4 is automatically reset, and the rigid contact between the brake member 4 and the bushing 2 can be avoided, thereby improving the service life.

[0053] In this embodiment, a protrusion 21 extending along a first direction is provided on the inner side wall of the bushing 2 , and the protrusion 21 extends toward the center of the bushing 2 .

[0054] A guide groove 41 extending in the first direction is provided on the outer side wall of the brake member 4, and the size of the guide groove 41 is slightly larger than the size of the protrusion 21, so that the protrusion 21 can be slidably disposed in the guide groove 41 without rotating. Specifically, the size of the guide groove 41 can be 0.1-0.2 mm larger than the size of the protrusion 21, so as to form a certain gap or tolerance between the two, and this gap or tolerance is to ensure that the components can be assembled smoothly and maintain a certain degree of freedom of movement, while avoiding performance problems caused by over-tightening or over-loosening.

[0055] In this embodiment, through the cooperation between the protrusion 21 and the guide groove 41 , the brake member 4 can be simply and stably restricted to move only in the first direction or against the first direction but not to rotate.

[0056] In this embodiment, the wheel shaft 3 is provided with a first engaging plane 31 extending along a first direction.

[0057] The brake member 4 is provided with a receiving groove for receiving the wheel axle 3 , and a second engaging plane extending along the first direction is provided at a position of the receiving groove corresponding to the first engaging plane 31 .

[0058] In this embodiment, when the first clamping surface and the second clamping surface are in contact, the wheel axle 3 is clamped and locked by the brake member 4, and the wheel can no longer rotate. The clamping and locking is achieved by contacting two planes extending in the first direction, which is not only simple in structure and easy to process and produce, but also very stable and reliable.

[0059] The first engaging plane 31 of this embodiment does not protrude from the wheel axle 3, and correspondingly, the second engaging plane in the receiving groove of the brake member 4 protrudes from the inner wall of the receiving groove. Of course, in other alternative embodiments, the first engaging plane 31 may also protrude from the wheel axle 3, and in this case, the second engaging plane in the receiving groove of the brake member 4 is recessed into the inner wall of the receiving groove.

[0060] The wheel set brake structure and carrier device of this embodiment include a connecting pipe 1, a bushing 2, a wheel axle 3, a brake member 4, a traction device 5 and a traction member 6. The traction device 5 pulls the traction member 6 to drive the brake member 4 to move in the bushing 2 toward the wheel, and the brake member 4 engages with the wheel axle 3, thereby locking the wheel axle 3 to prevent the wheel from rotating, thereby achieving a braking effect. When the brake member 4 moves away from the wheel, the brake member 4 disengages from the wheel axle 3, and the wheel can rotate freely. Compared with the prior art, the wheel set brake structure of this embodiment is simple in structure and easy to assemble, which not only saves production costs, but also has a stable and reliable structure, is not easy to damage, and has a longer service life.

Claims

1. A wheel brake structure, characterized in that: include: Connecting pipe; A bushing, fixedly installed in the connecting pipe; A wheel axle is rotatably mounted in the bushing, and the axial direction of the wheel axle is a first direction; a brake member, movably and non-rotatably mounted in the bushing, the brake member being configured to clamp the wheel axle; A traction device, arranged in the connecting pipe; A traction member, one end of which is connected to the traction device and the other end of which is connected to the brake member; The traction device drives the brake member to move in the bushing along the first direction or against the first direction through the traction member.

2. The wheel brake structure according to claim 1, characterized in that: The inner side wall of the bushing is provided with a protrusion extending along a first direction; A guide groove extending along a first direction is arranged on the outer side wall of the brake member, and the size of the guide groove is slightly larger than the size of the protrusion, so that the protrusion can be slidably arranged in the guide groove without rotating.

3. The wheel set brake structure according to claim 1, characterized in that: Also includes: The elastic return member is arranged in the bushing and is located on the path of the brake member moving along the first direction.

4. The wheel brake structure according to claim 1, characterized in that: The wheel axle is provided with a first clamping plane extending along a first direction; The brake component is provided with a receiving groove for receiving the wheel axle, and a second clamping plane extending along the first direction is provided at a position of the receiving groove corresponding to the first clamping plane.

5. The wheel brake structure according to claim 4, characterized in that: The first clamping plane does not protrude from the wheel axle.

6. The wheel set brake structure according to claim 1, characterized in that: The traction device is a motor.

7. A carrier, characterized in that: It comprises the wheel set braking structure as claimed in any one of claims 1 to 6, and the carrier further comprises wheels, which are mounted on the wheel axle and rotate synchronously with the wheel axle.

8. The carrier according to claim 7, characterized in that The carrier is any one of the following: Baby strollers, pet strollers, wheelchair strollers, luggage strollers.

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