Pin-drawing type height-adjustable auxiliary wheel support

Abstract

The utility model discloses a draw pin type height-adjustable auxiliary wheel support which comprises a support body and a base, the base is provided with an inserting groove matched with the upper end of the support body in the longitudinal direction, the inserting groove penetrates through the base, the upper end of the support body is provided with a plurality of locating holes in the transverse direction, and the locating holes penetrate through the inserting groove. And a positioning mechanism matched with the positioning hole is arranged on the base. According to the utility model, the longitudinally penetrating slot is formed in the base, and the positioning mechanism is arranged on the base to position and fix the bracket body, so that the upper end of the bracket body can be inserted from the upper part or the lower part of the slot and is fixed by using the same positioning mechanism, and the bracket is simple in structure and convenient to use.

Description

Technical Field

[0001] The utility model relates to a pin-pulling type height-adjustable auxiliary wheel bracket. Background Art

[0002] Traditional children's bicycles generally have training wheels installed near the left and right sides of the rear wheel of the bicycle. The training wheels can prevent the bicycle from tipping over and prevent children from falling while riding.

[0003] However, the traditional children's bicycle is inconvenient to disassemble and assemble the frame and training wheels, and there is no good way to place the training wheels after disassembly. They can only be stored at home, which makes them easy to lose after a long time, and the training wheels cannot be disassembled and assembled at any time according to needs. Utility Model Content

[0004] In view of the above problems, the utility model provides a pin-pull-out height-adjustable auxiliary wheel bracket, which effectively solves the problems pointed out in the background technology.

[0005] The technical solution adopted by the utility model is:

[0006] A pin-pull-out height-adjustable auxiliary wheel bracket comprises a bracket body and a base, wherein the base is provided with a slot matching the upper end of the bracket body along the longitudinal direction, the slot passes through the base, the upper end of the bracket body is provided with a plurality of positioning holes along the transverse direction, and the base is provided with a positioning mechanism matching the positioning holes.

[0007] Preferably, the positioning mechanism includes a pull pin, a spring and a pull handle, one end of the pull pin is fixed with a positioning block matching the positioning hole, and the other end is fixed to the pull handle, the base is provided with a sliding hole matching the positioning block on one side of the slot, the base is fixed with a spring mounting platform on the outside of the sliding hole, a spring mounting hole is provided in the center of the spring mounting platform, the inner end of the spring mounting hole matches the sliding hole, and a pull pin hole is provided at the outer end.

[0008] The positioning mechanism adopts a latch structure composed of a pull pin and a spring to adapt to the positioning hole. It has a simple structure and is easy to operate. The auxiliary wheels can be disassembled and assembled without professional auxiliary tools, providing conditions for users to disassemble and assemble and adjust the height of the auxiliary wheels anytime and anywhere.

[0009] Preferably, the base is provided with a mounting hole matching the positioning block on the other side of the slot.

[0010] The mounting hole is used for the installation of the positioning mechanism. During installation, the spring can be inserted from the mounting hole and installed in the spring mounting hole, the pull pin and the positioning block can be inserted from the mounting hole, the pull pin is inserted into the center of the spring, and the positioning block is inserted into the sliding hole. This installation method is convenient for repairing the positioning mechanism when it is damaged later, and during production, the spring mounting platform and the base can be welded and fixed to ensure the connection strength between the base and the spring mounting platform.

[0011] Preferably, the other end of the pull pin relative to the positioning block is provided with an external thread, and the pull handle is provided with an internal thread matching the external thread.

[0012] The pull pin and the pull handle are fixed by threaded connection, which is convenient for installation and disassembly of the positioning mechanism, and the pull handle can be replaced when it is damaged. At the same time, when the pull handle is damaged, a conventional nut can be used to replace the pull handle, and there is no need to purchase special accessories, which is convenient for users to perform later maintenance.

[0013] Preferably, the lower end of the bracket body is rotatably connected to an auxiliary wheel.

[0014] Preferably, the base is provided with positioning points and axle connecting holes.

[0015] The positioning points are used for positioning between the base and the frame, while the axle connecting holes are used for fixing between the base and the frame.

[0016] The utility model has a slot which runs through longitudinally on the base, and a positioning mechanism is arranged on the base to position and fix the bracket body, so that the upper end of the bracket body can be inserted from above or below the slot and fixed by the same positioning mechanism, which has a simple structure and is easy to use.

[0017] When the upper end of the bracket body is inserted from below the slot, the auxiliary wheels are close to the ground and are in a normal installation and use state. When the upper end of the bracket body is inserted from above the slot, the auxiliary wheels are away from the ground and are in a storage state, thereby solving the problem of placing the auxiliary wheels when not in use.

[0018] When the auxiliary wheel is not in use, the utility model can be stored above the base, so that the user can conveniently disassemble and assemble the auxiliary wheel at any time without causing the loss of the auxiliary wheel.

[0019] The utility model has a plurality of positioning holes arranged on the bracket body, and the user can select a suitable positioning hole for positioning and fixing according to his / her own needs, thereby realizing height adjustment of the auxiliary wheel.

[0020] The utility model adopts a latch structure composed of a pull pin and a positioning hole to position the bracket body. The structure is simple and the operation is convenient. The auxiliary wheels can be disassembled and assembled without professional auxiliary tools, which provides conditions for users to disassemble and assemble the auxiliary wheels and adjust the height anytime and anywhere. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the explosion structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the utility model when the auxiliary wheels are used and installed;

[0023] Figure 3 This is a schematic diagram of the structure of the utility model when the auxiliary wheels are stored and installed;

[0024] Figure 4 This is a schematic diagram of the structure of the positioning mechanism of the utility model when it is locked;

[0025] Figure 5 It is a structural schematic diagram of the positioning mechanism of the utility model when it is opened. DETAILED DESCRIPTION

[0026] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0027] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0028] In addition, in the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element 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] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "plurality" means two or more, unless otherwise clearly defined.

[0030] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0032] The present invention is further described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0033] like Figure 1-5 As shown, a pin-pull-out type height-adjustable auxiliary wheel bracket comprises a bracket body 1 and a base 2, the base 2 is provided with a positioning card point 7 and an axle connecting hole 8, the lower end of the bracket body 1 is rotatably connected with an auxiliary wheel 6, the base 2 is longitudinally provided with a slot 3 matching the upper end of the bracket body 1, the slot 3 runs through the base 2, the upper end of the bracket body 1 can be inserted into the slot 3 from top to bottom, and can also be inserted into the slot 3 from bottom to top, the upper end of the bracket body 1 is transversely provided with three positioning holes 4, the base 2 is provided with a positioning mechanism 5 matching the positioning holes 4, and the different positioning holes 4 are fixed by the positioning mechanism 5, so that the height adjustment of the bracket body 1 can be achieved.

[0034] The positioning mechanism 5 includes a pull pin 51, a spring 52 and a pull handle 53. One end of the pull pin 51 is fixed with a positioning block 54 matching the positioning hole 4, and the other end is fixed with the pull handle 53. The outer diameters of the pull handle 53 and the positioning block 54 are larger than the pull pin 51, so that the spring 52 can be clamped between the pull handle 53 and the positioning block 54 to achieve automatic resetting of the positioning block 54. The base 2 is provided with a sliding hole 55 matching the positioning block 54 on one side of the slot 3, so that the positioning block 54 can be completely moved into the sliding hole 55 to achieve the loosening of the positioning hole 4. The base 2 is fixed with a spring mounting platform 56 on the outer side of the sliding hole 55. A spring mounting hole 57 is provided in the center of the spring mounting platform 56. The inner end of the spring mounting hole 57 matches the sliding hole 55, and a pull pin hole 58 is provided at the outer end. The spring 52 can be installed through the spring mounting platform 56, and a spring 52 of a suitable length can be selected as needed. The spring mounting platform 56 can provide an installation space of the required length for the spring 52.

[0035] The base 2 is provided with a mounting hole 59 matching the positioning block 54 on the other side of the slot 3 . When the positioning mechanism 5 is assembled, the pull pin 51 , the spring 52 , and the positioning block 54 can be put into a predetermined position through the mounting hole 59 .

[0036] The pull pin 51 is provided with an external thread at the other end relative to the positioning block 54, and the pull handle 53 is provided with an internal thread matching the external thread. The pull handle 53 and the pull pin 51 are fixed by a threaded connection. The fixing method is simple, and when the pull handle 53 is damaged or lost, a conventional nut can be used to replace it. No special accessories are required, which is convenient for later maintenance.

[0037] The assembly method of the base of the utility model is as follows:

[0038] 1. Put the spring from the mounting hole into the spring mounting hole;

[0039] 2. Insert the end of the pull pin away from the positioning block into the mounting hole. The pull pin passes through the center of the spring and extends out of the pull pin hole to the outside of the spring mounting platform.

[0040] 3. Screw the pull handle onto the pull pin through a threaded connection.

[0041] When the utility model is installed on a vehicle frame, the base needs to be fixed to the vehicle frame first, and the specific operation is: positioning through positioning card points, and then fixing the base through the axle connecting hole.

[0042] After the base is fixed to the frame, the bracket body can be installed on the base as needed to realize the use installation and storage installation of the auxiliary wheels.

[0043] like Figure 2 As shown, the installation method is as follows:

[0044] Grasp the handle with your hand and pull it outward to move the positioning block into the sliding hole. At this time, insert the upper end of the bracket body from the bottom of the slot and stop it at a suitable position. Then release the handle. The positioning block is pressed against the bracket body under the elastic force of the spring. Finally, move the bracket body slightly up and down to insert the positioning block into the nearest positioning hole. This completes the installation of the auxiliary wheel. When removing the bracket body, just grasp the handle with your hand and pull it outward, and then take the bracket body out downward.

[0045] like Figure 3 As shown, the storage and installation methods are as follows:

[0046] Grab the handle with your hand and pull it outward to move the positioning block into the sliding hole. At this time, insert the upper end of the bracket body from above the slot and stop it at a suitable position. Then release the handle. The positioning block is pressed against the bracket body under the elastic force of the spring. Finally, move the bracket body slightly up and down to insert the positioning block into the nearest positioning hole. This completes the storage and installation of the auxiliary wheels. When removing the bracket body, just grab the handle with your hand and pull it outward, and then take the bracket body out upward.

[0047] Finally, it should be noted that the above examples are only specific embodiments of the present invention. Obviously, the present invention is not limited to the above embodiments, and there are many variations. All variations that can be directly derived or associated with the content disclosed by a person skilled in the art from the present invention should be considered as the protection scope of the present invention.

Claims

1. A pin-type height-adjustable auxiliary wheel bracket, characterized in that: The invention comprises a bracket body (1) and a base (2); the base (2) is provided with a slot (3) in the longitudinal direction and matched with the upper end of the bracket body (1); the slot (3) passes through the base (2); the upper end of the bracket body (1) is provided with a plurality of positioning holes (4) in the transverse direction; and the base (2) is provided with a positioning mechanism (5) matching with the positioning holes (4).

2. The pin-pull-out height-adjustable auxiliary wheel bracket according to claim 1, characterized in that: The positioning mechanism (5) comprises a pull pin (51), a spring (52) and a pull handle (53); one end of the pull pin (51) is fixed with a positioning block (54) matching the positioning hole (4), and the other end is fixed with the pull handle (53); a sliding hole (55) matching the positioning block (54) is provided on one side of the slot (3) of the base (2); a spring mounting platform (56) is fixed on the outer side of the sliding hole (55) of the base (2); a spring mounting hole (57) is provided at the center of the spring mounting platform (56); the inner end of the spring mounting hole (57) matches the sliding hole (55), and the outer end is provided with a pull pin hole (58).

3. The pin-pull-out height-adjustable auxiliary wheel bracket according to claim 2, characterized in that: The base (2) is provided with a mounting hole (59) on the other side of the slot (3) and matches the positioning block (54).

4. The pin-pull-out height-adjustable auxiliary wheel bracket according to claim 2, characterized in that: The other end of the pull pin (51) relative to the positioning block (54) is provided with an external thread, and the pull handle (53) is provided with an internal thread matching the external thread.

5. The pin-pull-out height-adjustable auxiliary wheel bracket according to claim 3, characterized in that: The lower end of the support body (1) is rotatably connected to an auxiliary wheel (6).

6. The pin-pull-out height-adjustable auxiliary wheel bracket according to claim 3, characterized in that: The base (2) is provided with a positioning clamping point (7) and an axle connecting hole (8).

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