Damping device and scooter

Abstract

The shock absorption device comprises a chassis frame, two rocker arms and an elastic assembly, the two rocker arms are rotationally arranged on the chassis frame, each rocker arm is of an integrated structure formed by combining a first arm section and a second arm section, the elastic assembly is transversely arranged, and the first arm section and the second arm section are connected through the elastic assembly. The two ends of the elastic assembly are rotationally connected with the second arm sections of the two rocker arms correspondingly, the elastic assembly comprises two spring seats, an inner spring and an outer spring, the two spring seats are arranged at the two ends of the outer spring, the inner spring is arranged in the outer spring, and the axis of the outer spring coincides with the axis of the inner spring; the elastic assembly is transversely arranged between the two rocker arms, when the vehicle jumps on the uneven ground, jumping transmitted by wheels can be absorbed and filtered through the elastic assembly, the damping effect is achieved, and compared with an existing damping structure with a vertically-arranged damping spring, the damping structure has the advantages of being simple and compact in structure, convenient to assemble, low in cost and the like. And the damping effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of scooters, in particular to a shock absorption device and a scooter. Background Art

[0002] Scooters are common means of transportation and are currently often used by people with mobility difficulties. They are a convenient means of transportation. People with leg defects and the elderly with unsteady walking can improve their mobility and independence by using scooters, which brings convenience to themselves and others. In addition, some patients with temporary mobility difficulties also need scooters as means of transportation during the preoperative or recovery period, which brings great convenience to their daily independent activities.

[0003] The spring shock absorption mechanism of electric scooters on the market generally adopts a structure in which a shock absorption spring is assembled between a rocker arm and a chassis frame. The shock absorption spring of this structure is mostly vertically arranged, which requires a large amount of installation space, resulting in an insufficiently compact structure. Moreover, this structure also has problems such as a long production cycle caused by complex assembly and high production costs. Summary of the Utility Model

[0004] The utility model aims to provide a technical solution to solve the above problems in order to overcome the above deficiencies.

[0005] A shock absorption device includes a chassis frame, rocker arms, and an elastic component. The number of rocker arms is two, and both rocker arms are rotatably arranged on the chassis frame. The rocker arm is an integral structure formed by combining a first arm segment and a second arm segment. The elastic component is horizontally arranged, and both ends of the elastic component are rotatably connected to the second arm segments of the two rocker arms respectively.

[0006] As a further scheme of the utility model: The elastic component includes spring seats, an inner spring, and an outer spring. The number of spring seats is two, and the two are arranged at both ends of the outer spring. The inner spring is arranged inside the outer spring, and the axis of the outer spring coincides with the axis of the inner spring.

[0007] As a further scheme of the utility model: Limiting parts are formed on the relative sides of the two spring seats. The limiting parts are three-layer stepped structures. The diameter of the first layer of the limiting part is larger than the diameter of the outer spring. The diameter of the second layer of the limiting part is smaller than the diameter of the outer spring. The diameter of the third layer of the limiting part is smaller than the diameter of the inner spring.

[0008] As a further scheme of the utility model: It also includes a first bolt and its first nut. A clamping groove for fitting the outer periphery of the chassis frame is formed on the first arm segment. A first through hole communicating with the clamping groove is opened on the surface of the first arm segment. A second through hole corresponding to the first through hole is opened on the chassis frame. The first bolt passes through the first through hole, the second through hole and is threadedly connected with the first nut.

[0009] As a further solution of the present utility model: It further includes a second bolt and its second nut. An installation groove is formed on the second arm section. The central axis of the card slot and the central axis of the installation groove are not in the same vertical plane. The spring seat is arranged in the installation groove. A third through hole communicating with the installation groove is formed on the surface of the second arm section. A fourth through hole corresponding to the third through hole is formed on the spring seat. The second bolt passes through the third through hole and the fourth through hole and is threadedly connected with the second nut.

[0010] The present utility model also provides a scooter, including the above shock absorption device.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows: By horizontally arranging an elastic component between the two rocker arms, when the vehicle bounces while driving on uneven ground, the elastic component can absorb and filter the bouncing transmitted by the wheels to achieve the shock absorption effect. And this shock absorption structure occupies little space in the vertical direction. Compared with the existing shock absorption structure with a vertically arranged shock absorption spring, it has the advantages of simple and compact structure, convenient assembly, light weight, and good shock absorption effect.

[0012] The additional aspects and advantages of the present utility model will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present utility model. Description of the Drawings

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0014] Figure 1 It is a schematic structural diagram of the present utility model.

[0015] Figure 2 It is a partial structural schematic diagram of the elastic component of the present utility model.

[0016] Figure 3 It is a partial structural schematic diagram of the chassis frame of the present utility model.

[0017] Figure 4 It is a partial structural schematic diagram of the shock absorption device of the present utility model.

[0018] In the figure: 10, shock absorber; 20, front wheel; 30, handlebar; 40, rear frame assembly; 1, chassis frame; 2, rocker arm; 3, elastic component; 4, first bolt; 5, first nut; 6, second bolt; 7, second nut; 11, second through hole; 21, first arm segment; 22, second arm segment; 31, spring seat; 32, inner spring; 33, outer spring; 34, limiting part; 35, fourth through hole; 211, card slot; 212, first through hole; 221, mounting groove; 222, third through hole. Detailed implementation manners

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Apparently, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0020] Please refer to Figures 1 to 3 , in the embodiment of the present invention, a shock absorber 10 includes a chassis frame 1, a rocker arm 2 and an elastic component 3. The number of rocker arms 2 is two, and both rocker arms 2 are rotatably arranged on the chassis frame 1. The rocker arm 2 is an integral structure formed by combining a first arm segment 21 and a second arm segment 22. The elastic component 3 is arranged horizontally, and both ends of the elastic component 3 are rotatably connected to the second arm segments 22 of the two rocker arms 2 respectively. By horizontally arranging the elastic component 3 between the two rocker arms 2 in the present invention, when the wheels jump during driving on uneven ground, the elastic component 3 can absorb and filter the jumping transmitted by the wheels to achieve the shock absorption effect.

[0021] The elastic component 3 includes a spring seat 31, an inner spring 32 and an outer spring 33. The number of spring seats 31 is two, and the two are arranged at both ends of the outer spring 33. The inner spring 32 is arranged inside the outer spring 33, and the axis of the outer spring 33 coincides with the axis of the inner spring 32. In this way, the inner spring 32 and the outer spring 33 are stressed simultaneously, and there is no jamming of the spring during the shock absorption process. Within the rated load range, the shock absorption effect can always be guaranteed in an ideal state, greatly improving the comfort during driving.

[0022] Limiting parts 34 are formed on the relative sides of the two spring seats 31. The limiting part 34 is a three-layer stepped structure. The diameter of the first layer of the limiting part 34 is larger than the diameter of the outer spring 33, the diameter of the second layer of the limiting part 34 is smaller than the diameter of the outer spring 33, and the diameter of the third layer of the limiting part 34 is smaller than the diameter of the inner spring 32. In this way, the ends of the outer spring 33 and the inner spring 32 can be respectively sleeved on the second layer and the third layer of the limiting part 34, enhancing the connection strength between the inner spring 32 and the outer spring 33 between the spring seats 31 and avoiding the situation of slip and dislocation of the inner spring 32 and the outer spring 33 during long-term use.

[0023] To facilitate the installation of the rocker arm 2, the shock absorption device 10 provided by the present utility model further includes a first bolt 4 and its first nut 5. A clamping groove 211 for fitting around the outer periphery of the chassis frame 1 is formed on the first arm segment 21. A first through hole 212 communicating with the clamping groove 211 is formed on the surface of the first arm segment 21. A second through hole 11 corresponding to the first through hole 212 is formed on the chassis frame 1. The first bolt 4 passes through the first through hole 212 and the second through hole 11 and is threadedly connected to the first nut 5.

[0024] To facilitate the installation of the elastic component 3, the shock absorption device 10 provided by the present utility model further includes a second bolt 6 and its second nut 7. An installation groove 221 is formed on the second arm segment 22. The central axis of the clamping groove 211 and the central axis of the installation groove 221 are not in the same vertical plane. The spring seat 31 is arranged in the installation groove 221. A third through hole 222 communicating with the installation groove 221 is formed on the surface of the second arm segment 22. A fourth through hole 35 corresponding to the third through hole 222 is formed on the spring seat 31. The second bolt 6 passes through the third through hole 222 and the fourth through hole 35 and is threadedly connected to the second nut 7.

[0025] Please refer to Figure 4 , the present utility model also provides a scooter, including the above-mentioned shock absorption device 10. The shock absorption device 10 is arranged on the scooter body. Specifically, the body includes front wheels 20, a handlebar 30 and a rear frame assembly 40. The handlebar 30 is arranged on the chassis frame 1. The rear frame assembly 40 is connected to the chassis frame 1. The number of the front wheels 20 is two. The two front wheels 20 are respectively installed on the first arm segments 21 of the two rocker arms 2. When the front wheels 20 jump when traveling on an uneven ground, the rocker arms 2 connected to the front wheels 20 rotate relative to the chassis frame 1, thereby squeezing or stretching the elastic component 3, so as to absorb and filter the jump transmitted by the front wheels 20 through the elastic component 3, and achieve the shock absorption effect.

[0026] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-mentioned exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, it is intended to include all changes falling within the meaning and scope of the equivalent elements of the claims in the present utility model.

Claims

1. A shock absorbing device, characterized in that: It includes a chassis frame, a rocker arm and an elastic component. There are two rocker arms, and the two rocker arms are rotatably arranged on the chassis frame. The rocker arm is an integrated structure formed by combining a first arm segment and a second arm segment. The elastic component is arranged horizontally, and both ends of the elastic component are rotatably connected to the second arm segments of the two rocker arms respectively.

2. The shock absorbing device according to claim 1, characterized in that: The elastic component comprises a spring seat, an inner spring and an outer spring. There are two spring seats, which are arranged at both ends of the outer spring. The inner spring is arranged inside the outer spring, and the axis of the outer spring coincides with the axis of the inner spring.

3. The shock absorbing device according to claim 2, characterized in that: A limiting portion is formed on the opposite side of the two spring seats. The limiting portion has a three-layer stepped structure. The first layer diameter of the limiting portion is larger than the diameter of the outer spring, the second layer diameter of the limiting portion is smaller than the diameter of the outer spring, and the third layer diameter of the limiting portion is smaller than the diameter of the inner spring.

4. The shock absorbing device according to claim 3, characterized in that: It also includes a first bolt and a first nut thereof. A slot for fitting the outer periphery of the chassis frame is formed on the first arm segment. A first through hole communicating with the slot is provided on the surface of the first arm segment. A second through hole corresponding to the first through hole is provided on the chassis frame. The first bolt passes through the first through hole, the second through hole and is threadedly connected with the first nut.

5. The shock absorbing device according to claim 4, characterized in that: It also includes a second bolt and a second nut thereof, a mounting groove is provided on the second arm segment, a central axis of the clamping groove and a central axis of the mounting groove are not in the same vertical plane, a spring seat is arranged in the mounting groove, a third through hole communicating with the mounting groove is provided on the surface of the second arm segment, a fourth through hole corresponding to the third through hole is provided on the spring seat, and the second bolt passes through the third through hole and the fourth through hole and is threadedly connected with the second nut.

6. A mobility scooter, characterized in that: The invention comprises the shock absorbing device according to any one of claims 1 to 5.

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