Suspension fork structure and wheelchair

Abstract

A suspension fork structure comprises an inner fork leg and an outer fork leg, the inner fork leg is hinged to the inner side of the outer fork leg, the top side of the inner fork leg is connected with a frame, the bottom side of the outer fork leg is connected with a wheel, and the inner fork leg and the outer fork leg are connected through a horizontally-arranged tension spring assembly to achieve abutting connection. According to the suspension front fork structure and the wheelchair provided by the utility model, the hinge joint of the inner fork leg and the outer fork leg is realized by adopting a non-penetrating shaft structure, so that the position of the hinge joint position in the tread of a vehicle tire can be improved; the tension spring assembly is used for supporting the inner fork leg to abut against the outer fork leg, when the wheel passes through an obstacle, the wheel swings backwards and upwards, then the outer fork connecting block is driven to be away from the inner fork connecting block, and the tension spring assembly bears pressure and is compressed. When the vehicle passes through an obstacle, the tension spring assembly resets to pull the outer fork connecting block to abut against the inner fork connecting block, then the wheel is driven to reset, and the shock absorption function is achieved; the shock absorption structure is simple and ingenious, the shock absorption stroke is controlled by the horizontally-arranged tension spring assembly, the jolting amount is smaller, and the use experience feeling of a user is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wheelchairs, in particular to a shock-absorbing front fork structure and a wheelchair. Background Art

[0002] At present, the electric wheelchairs on the market are mainly made of aluminum alloy, which is light and good-looking. However, due to the light weight of the wheelchair, if it encounters uneven ground during use, it will be very bumpy, causing discomfort to the user. Moreover, if the driving speed is too fast, not only will the bumps be more severe, but accidents are also more likely to occur.

[0003] Therefore, in view of the shortcomings of the prior art, it is necessary to design a shock-absorbing front fork structure and a wheelchair to solve the above problems. Utility Model Content

[0004] In order to overcome the above-mentioned deficiencies in the prior art, the utility model aims to provide a shock-absorbing front fork structure and a wheelchair.

[0005] To achieve the above-mentioned purpose and other related purposes, the technical solution provided by the utility model is: a shock-absorbing front fork structure, including an inner fork leg and an outer fork leg, the inner fork leg is hinged on the inner side of the outer fork leg, the top side of the inner fork leg is connected to the frame, and the bottom side of the outer fork leg is connected to the wheel, and the inner fork leg and the outer fork leg are connected by a horizontally arranged tension spring assembly to achieve abutment.

[0006] The preferred technical solution is: an outer side of the inner fork leg is provided with an outer fork leg stop boss for preventing the outer fork leg from rotating counterclockwise, and an inner side of the outer fork leg is provided with an inner fork leg stop boss for preventing the inner fork leg from rotating clockwise.

[0007] The preferred technical solution is: the inner fork leg is composed of a left inner fork leg, a right inner fork leg, and an inner fork connecting block connecting the left inner fork leg and the right inner fork leg; the outer fork leg is composed of a left outer fork leg, a right outer fork leg, and an outer fork connecting block connecting the left outer fork leg and the right outer fork leg; the left inner fork leg is hinged on the inner side of the left outer fork leg, and the right inner fork leg is hinged on the inner side of the right outer fork leg.

[0008] The preferred technical solution is: the tension spring assembly is composed of a pull rod, a spring and a stop bolt, a horizontally arranged spring mounting groove is provided in the inner fork connecting block, and a through hole is provided at one end of the spring mounting groove close to the outer fork connecting block for the pull rod to pass through; the spring is arranged in the spring mounting groove in a horizontal posture, the pull rod is passed through the spring and one end is fixedly connected to the outer fork connecting block via the through hole, the stop bolt is fixedly connected to the other end of the pull rod, one end of the spring is abutted against the stop bolt, and the other end of the spring is abutted against the spring mounting groove.

[0009] A wheelchair comprises the shock-absorbing front fork structure described in any one of the above.

[0010] Due to the application of the above technical solution, the utility model has the following beneficial effects:

[0011] The utility model provides a shock-absorbing front fork structure and a wheelchair, which adopt a non-through-axis structure to realize the hinge connection of the inner fork leg and the outer fork leg, thereby improving the position of the hinge position in the wheel tread; the tension spring assembly is used to support the inner fork leg and the outer fork leg to resist each other, and when the wheel passes through an obstacle, the wheel swings backward and upward, thereby driving the outer fork connecting block away from the inner fork connecting block, and the tension spring assembly bears pressure and compresses; after passing the obstacle, the tension spring assembly is reset to pull the outer fork connecting block to resist the inner fork connecting block, thereby driving the wheel to reset and realize the shock-absorbing function; the shock-absorbing structure is simple and ingenious, and the shock-absorbing stroke is controlled by the horizontally arranged tension spring assembly, with a smaller bump amount, thereby improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The present invention is a schematic structural diagram of a shock-absorbing front fork from one viewing angle.

[0013] Figure 2 It is a schematic structural diagram of the shock-absorbing front fork involved in the utility model from another perspective. DETAILED DESCRIPTION

[0014] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0015] See also Figure 1-Figure 2 . It should be noted that in the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use. They 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", "third" and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. Terms such as "horizontal", "vertical", and "overhanging" do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0016] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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, it can be an electrical connection, it can be a direct connection, it can be indirectly connected through an intermediate medium, and 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.

[0017] Example:

[0018] like Figure 1 to Figure 2 As shown, according to an overall technical concept of the utility model, a shock-absorbing front fork structure is provided, including an inner fork leg 1 and an outer fork leg 2, the inner fork leg 1 is hinged on the inner side of the outer fork leg 2, the top side of the inner fork leg 1 is connected to a frame (not shown), the bottom side of the outer fork leg 2 is connected to a wheel 3, and the inner fork leg 1 and the outer fork leg 2 are connected by a horizontally arranged tension spring assembly to achieve abutment.

[0019] like Figure 1 to Figure 2 As shown, in an exemplary embodiment of the utility model, the outer side of the inner fork leg 1 is provided with an outer fork leg stop boss 14 for preventing the outer fork leg 2 from rotating counterclockwise, and the inner side of the outer fork leg 2 is provided with an inner fork leg stop boss 24 for preventing the inner fork leg 1 from rotating clockwise.

[0020] like Figure 1 to Figure 2 As shown, in an exemplary embodiment of the utility model, the inner fork leg 1 is composed of a left inner fork leg 11, a right inner fork leg 12, and an inner fork connecting block 13 connecting the left inner fork leg 11 and the right inner fork leg 12; the outer fork leg 2 is composed of a left outer fork leg 21, a right outer fork leg 22, and an outer fork connecting block 23 connecting the left outer fork leg 21 and the right outer fork leg 22; the left inner fork leg is hinged on the inner side of the left outer fork leg, and the right inner fork leg is hinged on the inner side of the right outer fork leg.

[0021] like Figure 1 to Figure 2 As shown, in an exemplary embodiment of the utility model, the tension spring assembly is composed of a pull rod 4, a spring 5 and a stop bolt 6, a horizontally arranged spring mounting groove is provided in the inner fork connecting block 13, and a through hole is provided at one end of the spring mounting groove close to the outer fork connecting block 23 for the pull rod 4 to pass through; the spring 5 is arranged in the spring mounting groove in a horizontal posture, the pull rod 4 is passed through the spring 5 and one end is fixedly connected to the outer fork connecting block 23 through the through hole, the stop bolt 6 is fixedly connected to the other end of the pull rod 4, one end of the spring 5 is against the stop bolt 6, and the other end of the spring 5 is against the spring mounting groove.

[0022] In addition, according to another overall technical concept of the present utility model, a wheelchair is provided, comprising any one of the above-mentioned shock-absorbing front fork structures.

[0023] Therefore, the utility model has the following advantages:

[0024] The utility model provides a shock-absorbing front fork structure and a wheelchair, which adopt a non-through-axis structure to realize the hinge connection of the inner fork leg and the outer fork leg, thereby improving the position of the hinge position in the wheel tread; the tension spring assembly is used to support the inner fork leg and the outer fork leg to resist each other, and when the wheel passes through an obstacle, the wheel swings backward and upward, thereby driving the outer fork connecting block away from the inner fork connecting block, and the tension spring assembly bears pressure and compresses; after passing the obstacle, the tension spring assembly is reset to pull the outer fork connecting block to resist the inner fork connecting block, thereby driving the wheel to reset and realize the shock-absorbing function; the shock-absorbing structure is simple and ingenious, and the shock-absorbing stroke is controlled by the horizontally arranged tension spring assembly, with a smaller bump amount, thereby improving the user experience.

[0025] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A shock-absorbing front fork structure, characterized in that: It includes an inner fork leg and an outer fork leg, the inner fork leg is hinged on the inner side of the outer fork leg, the top side of the inner fork leg is connected to the frame, the bottom side of the outer fork leg is connected to the wheel, and the inner fork leg and the outer fork leg are connected by a horizontally arranged tension spring assembly to achieve abutment.

2. A shock-absorbing front fork structure according to claim 1, characterized in that: An outer side of the inner fork leg is provided with an outer fork leg stop boss for preventing the outer fork leg from rotating counterclockwise, and an inner side of the outer fork leg is provided with an inner fork leg stop boss for preventing the inner fork leg from rotating clockwise.

3. A shock-absorbing front fork structure according to claim 1, characterized in that: The inner fork leg is composed of a left inner fork leg, a right inner fork leg, and an inner fork connecting block connecting the left inner fork leg and the right inner fork leg; the outer fork leg is composed of a left outer fork leg, a right outer fork leg, and an outer fork connecting block connecting the left outer fork leg and the right outer fork leg; the left inner fork leg is hinged on the inner side of the left outer fork leg, and the right inner fork leg is hinged on the inner side of the right outer fork leg.

4. A shock-absorbing front fork structure according to claim 3, characterized in that: The tension spring assembly is composed of a pull rod, a spring and a stop bolt. A horizontally arranged spring installation groove is provided in the inner fork connecting block. A through hole is provided at one end of the spring installation groove close to the outer fork connecting block for the pull rod to pass through. The spring is arranged in the spring installation groove in a horizontal posture. The pull rod passes through the spring and one end is fixedly connected to the outer fork connecting block via the through hole. The stop bolt is fixedly connected to the other end of the pull rod. One end of the spring abuts against the stop bolt, and the other end of the spring abuts against the spring installation groove.

5. A wheelchair, characterized in that: It comprises a suspension front fork structure as described in any one of claims 1 to 4.

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