Chassis and scooter

Abstract

The utility model provides a chassis and a scooter, relates to the technical field of scooters, and aims to solve the technical problems that a current folded scooter occupies a large space and is inconvenient to carry. The chassis comprises a first chassis frame, a second chassis frame and a locking mechanism. The first chassis frame and the second chassis frame are oppositely arranged in the first direction, and the first chassis frame slides relative to the second chassis frame so that the chassis can be folded or unfolded. When the chassis is in the storage state, the first chassis frame slides to the second chassis frame, and the first chassis frame and the second chassis frame are at least partially overlapped; the locking mechanism is arranged between the first chassis frame and the second chassis frame, and the locking mechanism is configured to lock the chassis when the chassis is completely unfolded; and when the chassis is stored, the locking mechanism unlocks the locking state of the chassis. According to the scooter, the chassis can be unfolded and stored, so that the folded scooter is small in occupied space and convenient to carry.

Description

Technical Field

[0001] The present application relates to the technical field of mobility scooters, and more specifically, to a chassis and a mobility scooter. Background Art

[0002] Scooters are low-speed electric vehicles and are a new type of transportation that has emerged in recent years. They are popular among consumers because of their ease of operation and low safety risks.

[0003] The current mobility scooter includes a chassis, a folding mechanism, a seat cushion, a moving mechanism and a driving mechanism, wherein the chassis serves as a bearing unit, and the driving mechanism, the traveling mechanism and the folding mechanism are all mounted on the chassis. For example, the bottom end of the folding mechanism is connected to the chassis, and the top end of the folding mechanism is connected to the seat cushion. When the folding mechanism is unfolded, the seat cushion is provided for the user to sit on. The driving mechanism is connected to the traveling mechanism in a transmission manner to drive the traveling mechanism and drive the mobility scooter to move.

[0004] Furthermore, by operating the folding mechanism accordingly, the scooter can be unfolded or folded for easy carrying and storage by the user. However, the current chassis is relatively large, resulting in a large space occupied by the folded scooter, which is inconvenient to carry and affects the user experience. Utility Model Content

[0005] The purpose of the present application is to provide a chassis and a mobility scooter, wherein the chassis is configured as a retractable chassis that can be unfolded and folded, so that the mobility scooter occupies little space after being folded and is easy to carry.

[0006] In order to achieve the above objectives, the embodiments of the present application provide the following technical solutions:

[0007] A first aspect of an embodiment of the present application provides a chassis, comprising a first chassis frame, a second chassis frame and a locking mechanism; the first chassis frame and the second chassis frame are arranged relative to each other along a first direction, and the first chassis frame slides relative to the second chassis frame to allow the chassis to be stored or unfolded; when the chassis is in a stored state, the first chassis frame slides onto the second chassis frame, and the two at least partially overlap; the locking mechanism is arranged between the first chassis frame and the second chassis frame, and the locking mechanism is configured to lock the first chassis frame and the second chassis frame when the chassis is fully unfolded; and when the chassis is stored, the locking mechanism unlocks the locked state of the first chassis frame and the second chassis frame.

[0008] In a possible implementation, along the first direction, the first chassis frame is disposed on the front side of the second chassis frame; the first chassis frame is slidably sleeved on the second chassis frame, and the second chassis frame is fixed.

[0009] In a possible implementation, the locking mechanism includes a locking pin and a locking hook; the locking pin is arranged on the second chassis frame, and the locking pin is configured to be retracted into a gap between the first chassis frame and the second chassis frame; the locking hook is rotatably connected to the first chassis frame, and the locking hook includes a limiting groove, a guide portion and an unlocking portion, and the limiting groove and the guide portion are respectively opposite to the locking pin along a first direction; the guide portion is configured so that during the unfolding of the chassis, the guide portion abuts against the locking pin and rotates the locking hook; the limiting groove is configured so that when the chassis is fully unfolded, the locking pin is snapped into the limiting groove; the unlocking portion is configured so that when the chassis is retracted, the unlocking portion receives the unlocking force and drives the locking hook to rotate, and the locking pin disengages from the limiting groove.

[0010] In one possible implementation, the locking mechanism also includes a force-applying arm; the first end of the force-applying arm is slidably connected to the first chassis frame, and the second end of the force-applying arm is configured as a force-applying portion; the first end of the force-applying arm has an abutment portion that cooperates with the unlocking portion, and the abutment portion is configured such that when the force-applying portion is subjected to force and the force-applying arm slides relative to the locking hook, the abutment portion abuts against the unlocking portion and provides an unlocking force.

[0011] In a possible implementation, a guide pin is provided between the first chassis frame and the locking hook; a guide groove is provided at the first end of the force application arm, the guide pin is slidably installed in the guide groove, and an end of the guide pin is fixed to the first chassis frame.

[0012] In a possible implementation, the locking hook includes a hook body; a hinge hole is provided at one end of the hook body along a first direction; the hook body is mounted on the first chassis frame through the hinge hole and forms a rotation center of the locking hook.

[0013] In a possible implementation, the locking hook also includes a blocking block; the blocking block is arranged on the surface of the hook body facing the second chassis frame; the blocking block is located at an end of the hook body away from the rotation center along the first direction and is located outside the first chassis frame; the bottom of the blocking block is recessed and forms the limiting groove.

[0014] In a possible implementation manner, a guiding inclined surface is provided on a side of the clamping block facing the rotation center, and the guiding inclined surface is configured as the guiding portion.

[0015] In a possible implementation, the lock hook further includes an unlocking lever disposed at the bottom of the hook body; along the first direction, the unlocking lever is disposed close to the rotation center, and an end of the unlocking lever forms the unlocking portion.

[0016] In a possible implementation manner, along a direction perpendicular to the hook body, the unlocking lever and the hook body are located in the same rotation plane.

[0017] In a possible implementation, the first chassis frame is provided with an angle limiting portion; the angle limiting portion is provided close to the rotation center, the angle limiting portion is located on the rotation path of the locking hook, and abuts against the locking hook.

[0018] In a possible implementation, the locking mechanism further includes an elastic member; the elastic member is disposed between the locking hook and the first chassis frame, and the elastic member is used to provide a locking force to the locking hook.

[0019] A second aspect of an embodiment of the present application provides a mobility scooter, comprising a connecting rod folding mechanism and the chassis described in the first aspect; the chassis comprises a first chassis frame and a second chassis frame, the first chassis frame and the second chassis frame are arranged relative to each other along a first direction, and the first chassis frame slides relative to the second chassis frame; the connecting rod folding mechanism is configured to be linked with the first chassis frame, and when the connecting rod folding mechanism is folded, the chassis is stored; and when the connecting rod folding mechanism is unfolded, the chassis is unfolded.

[0020] In a possible implementation, the chassis also includes a force arm; along a first direction, the first chassis frame is arranged on the front side of the second chassis frame, the first chassis frame is slidably mounted on the second chassis frame, and the second chassis frame is fixed; the force arm is arranged between the connecting rod folding mechanism and the first chassis frame, and the connecting rod folding mechanism drives the force arm to move.

[0021] In a possible implementation, the connecting rod folding mechanism further includes a first rod; the first rod is connected to the force application arm, or the first rod is configured as the force application arm.

[0022] Compared with the related art, the chassis and the mobility scooter provided in the embodiments of the present application have the following advantages:

[0023] The mobility scooter provided in an embodiment of the present application has a chassis comprising a first chassis frame, a second chassis frame and a locking mechanism which are sleeved and slidably connected. The locking mechanism is arranged between the first chassis frame and the second chassis frame, and the first chassis frame is linked with the connecting rod folding mechanism to enable the first chassis frame to slide relative to the second chassis frame.

[0024] For example, when the mobility scooter needs to be stored, the connecting rod folding mechanism is folded, and the first chassis frame slides and is stored relative to the second chassis frame; or, when the mobility scooter needs to be unfolded, the connecting rod folding mechanism is unfolded, the first chassis frame slides and is unfolded relative to the second chassis frame, and the locking mechanism locks the unfolded first chassis frame and the second chassis frame.

[0025] The chassis of the scooter in the related art is an integrated structure, which results in a large volume of the folded chassis, occupies a large space, is inconvenient to carry, and affects the user experience. However, the chassis provided in the embodiment of the present application is configured as a retractable chassis, which can be unfolded and stored, so the scooter occupies a small space after folding and is easy to carry.

[0026] In addition to the technical problems solved by the embodiments of the present disclosure described above, the technical features that constitute the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions, other technical problems that can be solved by the chassis and the mobility scooter provided by the embodiments of the present application, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further described in detail in the specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic diagram of the overall structure of a mobility scooter provided in an embodiment of the present application;

[0028] Figure 2 A schematic diagram of the arrangement of the locking mechanism of the mobility scooter provided in an embodiment of the present application relative to the chassis;

[0029] Figure 3 An exploded schematic diagram of a locking mechanism provided in an embodiment of the present application;

[0030] Figure 4 Schematic diagram of the assembly of the first chassis frame and the second chassis frame provided in the embodiment of the present application Figure 1 ;

[0031] Figure 5 Schematic diagram of the assembly of the first chassis frame and the second chassis frame provided in the embodiment of the present application Figure 2 ;

[0032] Figure 6 A schematic diagram of a chassis in a locked state provided in an embodiment of the present application;

[0033] Figure 7 for Figure 4 The enlarged schematic diagram at A in the middle;

[0034] Figure 8 A schematic diagram of the structure of the lock hook provided in an embodiment of the present application;

[0035] Fig. 9A schematic diagram of the structure of the force application arm provided in an embodiment of the present application;

[0036] Figures 10 to 12 A schematic diagram of the chassis deployment process provided in an embodiment of the present application;

[0037] Figures 13 to 15 A schematic diagram of the chassis folding process provided in an embodiment of the present application.

[0038] Description of reference numerals:

[0039] 10- Chassis;

[0040] 11-first chassis frame; 111-angle limiting portion; 12-second chassis frame;

[0041] 20-locking mechanism;

[0042] 21-locking pin;

[0043] 22-lock hook;

[0044] 221-hook body; 2211-hinged hole;

[0045] 222-block; 2221-limiting groove; 2222-guide portion;

[0046] 223-Unlock lever;

[0047] 2231-unlocking department;

[0048] 23-Force arm;

[0049] 231-abutment portion; 232-guide groove;

[0050] 24-guide pin;

[0051] 25- elastic member;

[0052] 30-connecting rod folding mechanism;

[0053] 31-seat support frame;

[0054] 32-seat bracket; 321-first seat connecting rod; 322-second seat connecting rod;

[0055] 33-backrest bracket; 34-transmission connecting rod; 35-first rod; 36-support;

[0056] 40-steering mechanism;

[0057] 50- walking mechanism;

[0058] 100-Mobility vehicle. DETAILED DESCRIPTION

[0059] The chassis of the scooter in the related art is relatively large, and there is a problem that the scooter occupies a large space after being folded, which is not convenient to carry. The inventor has found that the reason for this problem is that the chassis of the scooter is an integrated structure, and its volume is fixed and does not change with the folding or unfolding of the scooter, resulting in a large volume of the chassis after folding, which occupies a large space and is not convenient to carry.

[0060] In response to the above technical problems, the mobility scooter provided in the embodiment of the present application has a chassis including a first chassis frame, a second chassis frame and a locking mechanism that are sleeved and slidably connected. The locking mechanism is arranged between the first chassis frame and the second chassis frame, and the first chassis frame is linked with the connecting rod folding mechanism to enable the first chassis frame to slide relative to the second chassis frame.

[0061] For example, when the mobility scooter needs to be stored, the connecting rod folding mechanism is folded, and the first chassis frame slides and is stored relative to the second chassis frame; or when the mobility scooter needs to be unfolded, the connecting rod folding mechanism is unfolded, and the first chassis frame slides and is unfolded relative to the second chassis frame, and the locking mechanism can lock the first chassis frame and the second chassis frame after the chassis is fully unfolded, and when the chassis is stored, the locking mechanism unlocks the locked state of the first chassis frame and the second chassis frame.

[0062] With such arrangement, the chassis provided in the embodiment of the present application is configured as a retractable chassis, and the chassis can be unfolded and stored, so the folded mobility scooter occupies little space and is easy to carry.

[0063] In order to make the above-mentioned purposes, features and advantages of the embodiments of the present application more obvious and understandable, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of this application.

[0064] To facilitate the description of the embodiments of the present application, the coordinate system in the accompanying drawings is explained, wherein the X-axis direction represents the first direction, which may be the front or rear direction of the vehicle, and this direction is consistent with the forward or backward direction of the vehicle; the Y-axis direction represents the second direction, which may be the left or right direction of the vehicle; and the Z-axis direction represents the third direction, which may be the height direction of the vehicle.

[0065] like Figure 1As shown, the mobility scooter 100 provided in the embodiment of the present application includes a chassis 10, a traveling mechanism 50, a steering mechanism 40 and a connecting rod folding mechanism 30, wherein the chassis 10 is configured as a bearing unit of the entire mobility scooter 100, and the traveling mechanism 50, the steering mechanism 40 and the connecting rod folding mechanism 30 are respectively arranged on the chassis 10.

[0066] Furthermore, the traveling mechanism 50 includes traveling wheels and a driving assembly drivingly connected to the traveling wheels. The driving assembly includes but is not limited to a driving motor, and the driving motor is used to provide power to the traveling wheels to enable the scooter 100 to move forward, backward, etc.

[0067] The steering mechanism 40 includes a steering gear and a steering rod, wherein the steering gear is arranged at the front end of the chassis 10, and the steering gear can drive the running wheels to steer; the steering rod is arranged at the front end of the chassis 10, and the steering rod extends along a third direction, and the bottom end of the steering rod is connected to the steering gear, and the steering gear movement can be controlled by the steering rod to steer the running wheels.

[0068] The link folding mechanism 30 is not only used to support the backrest cushion or the seat cushion, but also can fold or unfold the entire mobility scooter 100 when the link folding mechanism 30 is in motion. The link folding mechanism 30 in the embodiment of the present application is linked with the chassis 10. When the link folding mechanism 30 is folded, the link folding mechanism 30 can drive the chassis 10 to be stored, and when the link folding mechanism 30 is unfolded, the link folding mechanism 30 can drive the chassis 10 to be unfolded.

[0069] like Figure 2 and Figure 3 As shown, the chassis 10 provided in the embodiment of the present application includes a first chassis frame 11, a second chassis frame 12 and a locking mechanism 20, wherein the first chassis frame 11 and the second chassis frame 12 are arranged along a first direction, the first chassis frame 11 is slidably connected to the second chassis frame 12, and the first chassis frame 11 can slide relative to the second chassis frame 12, and the two are at least partially overlapped along the first direction.

[0070] like Figure 4 and Figure 5 As shown, for example, along a first direction, the first chassis frame 11 is arranged on the front side of the second chassis frame 12, and the first chassis frame 11 is slidably mounted on the second chassis frame 12, and the second chassis frame 12 is fixed, and the first chassis frame 11 moves relative to the second chassis frame 12 along the first direction. This embodiment of the present application is described by taking this as an example.

[0071] When the chassis 10 is in the storage state, the first chassis frame 11 slides onto the second chassis frame 12, and the two overlap each other. With such an arrangement, the length of the chassis 10 in the first direction can be reduced, so that the folded mobility scooter 100 occupies a small space and is easy to carry. When the chassis 10 is unfolded, the first chassis frame 11 moves relative to the second chassis frame 12 along the first direction so that the first chassis frame 11 and the second chassis frame 12 are unfolded. For example, the first chassis frame 11 and the second chassis frame 12 are arranged horizontally, and after unfolding, the first chassis frame 11 and the second chassis frame 12 are in the same plane.

[0072] It should be noted that when the chassis 10 is in the stowed state, the link folding mechanism 30 is in the folded state, that is, the scooter 100 is in the folded state. When the chassis 10 is in the unfolded state, the link folding mechanism 30 is in the unfolded state, that is, the scooter 100 is in the unfolded state.

[0073] Furthermore, the locking mechanism 20 is disposed between the first chassis frame 11 and the second chassis frame 12, and the locking mechanism 20 is configured to lock the first chassis frame 11 and the second chassis frame 12 when the chassis is fully unfolded; and when the chassis 10 needs to be stored, the locking mechanism 20 unlocks the locked state of the first chassis frame 11 and the second chassis frame 12, thereby improving the operating reliability and stability of the mobility scooter 100.

[0074] The chassis of the mobility scooter in the related art is an integrated structure, which results in a large volume of the chassis after folding, occupies a large space, is inconvenient to carry, and affects the user experience. However, the chassis 10 provided in the embodiment of the present application is configured as a retractable chassis, which can be unfolded and stored, so the mobility scooter 100 occupies a small space after folding and is easy to carry.

[0075] like Figure 6 and Figure 7 As shown, combined with Figure 4 and Figure 5 ; The locking mechanism 20 provided in the embodiment of the present application includes a locking pin 21 and a locking hook 22 cooperating with the locking pin 21, wherein the locking pin 21 is arranged on the second chassis frame 12, and the locking pin 21 is configured to be receivable in the gap between the first chassis frame 11 and the second chassis frame 12.

[0076] For example, the first chassis frame 11 and the second chassis frame 12 are both square steel, the end of the second chassis frame 12 is inserted into the first chassis frame 11, the locking pin 21 is inserted into the end of the second chassis frame 12 and fixed, the end of the locking pin 21 is exposed to the outside of the second chassis frame 12, the exposed part is engaged with the locking hook 22, and the exposed part can be located in the gap between the first chassis frame 11 and the second chassis frame 12, so that the locking pin 21 can be received in the gap between the first chassis frame 11 and the second chassis frame 12, avoiding interference between the first chassis frame 11 and the second chassis frame 12, so as to ensure that the first chassis frame 11 moves relative to the second chassis frame 12.

[0077] Furthermore, the lock hook 22 is rotatably connected to the end of the first chassis frame 11, and the lock hook 22 is arranged close to the locking pin 21, so that when the first chassis frame 11 and the second chassis frame 12 are fully unfolded, the lock hook 22 is engaged with the locking pin 21; and when the first chassis frame 11 and the second chassis frame 12 need to be unlocked, the lock hook 22 and the locking pin 21 are released from the engaged state.

[0078] like Figure 8 As shown, the lock hook 22 includes a limiting groove 2221, a guide portion 2222 and an unlocking portion 2231, wherein the limiting groove 2221 and the guide portion 2222 are arranged at intervals along the first direction, and the guide portion 2222 is located in front of the limiting groove 2221 along the first direction. The limiting groove 2221 and the guide portion 2222 are respectively arranged opposite to the locking pin 21, that is, the locking pin 21 is located on the moving path of the first chassis frame 11, and is respectively opposite to the limiting groove 2221 and the guide portion 2222.

[0079] like Figures 9 to 12 As shown, during the unfolding process of the chassis 10, the first chassis frame 11 moves relative to the second chassis frame 12 along the first direction toward the front of the mobility scooter 100, and during the movement of the first chassis frame 11, the guide portion 2222 contacts the locking pin 21 before the limiting groove 2221. The abutment force generated by the abutment of the guide portion 2222 and the locking pin 21 can cause the locking hook 22 to rotate relative to the first chassis frame 11, so that the limiting groove 2221 is opposite to the locking pin 21.

[0080] It should be noted that when the first chassis frame 11 is moved into place, the limit groove 2221 is opposite to the locking pin 21, and the locking hook 22 can be further locked into the limit groove 2221 to achieve locking of the first chassis frame 11 and the second chassis frame 12, that is, the limit groove 2221 is configured so that when the chassis 10 is fully unfolded, the locking pin 21 is snapped into the limit groove 2221.

[0081] like Figures 13 to 15As shown, in the embodiment of the present application, the unlocking portion 2231 is configured to receive the unlocking force and drive the lock hook 22 to rotate when the chassis 10 is stored, so that the locking pin 21 is disengaged from the limiting groove 2221. Exemplarily, the unlocking portion 2231 and the guide portion 2222 are respectively located at the two ends of the lock hook 22, wherein the unlocking portion 2231 is arranged close to the rotation center relative to the guide portion 2222, and the unlocking portion 2231 is used to release the clamping state between the locking pin 21 and the limiting groove 2221. In the embodiment of the present application, the unlocking portion 2231 is used to receive the unlocking force and rotate the lock hook 22, so that the locking pin 21 is disengaged from the limiting groove 2221, so that the first chassis frame 11 can be moved relative to the second chassis frame 12 to achieve the storage of the chassis 10.

[0082] In order to facilitate unlocking and locking the chassis 10, the locking mechanism 20 provided in the embodiment of the present application further includes a force arm 23, wherein the force arm 23 includes a first end and a second end arranged opposite to each other, and the first end of the force arm 23 is slidably connected to the first chassis frame 11 and can drive the first chassis frame 11 to move. The second end of the force arm 23 is configured as a force applying portion, and a force can be provided to the force arm 23 through the force applying portion.

[0083] Furthermore, a first end of the force arm 23 is provided with an abutment portion 231 , which is arranged opposite to the unlocking portion 2231 along the first direction, arranged in front of the unlocking portion 2231 along the first direction, and the unlocking portion 2231 is located on the moving path of the abutment portion 231 .

[0084] When the chassis 10 needs to be stored, an external force can be applied to the force applying portion to move the force applying arm 23, and the force applying arm 23 slides relative to the lock hook 22, and the abutting portion 231 moves backward following the force applying arm 23. When the abutting portion 231 abuts against the unlocking portion 2231, the abutting force generated therebetween is configured as an unlocking force, so that the lock hook 22 rotates relative to the first chassis frame 11, and the locking pin 21 is disengaged from the limiting groove 2221.

[0085] In one embodiment, a guide pin 24 is provided between the first chassis frame 11 and the lock hook 22. The guide pin 24 is vertically installed on the side of the first chassis frame 11 along the second direction, and the second end of the guide pin 24 passes through the lock hook 22 and is slidably installed on the force arm 23. The first end of the force arm 23 is provided with a guide groove 232, which extends along the first direction. The second end of the guide pin 24 is inserted into the guide groove 232 and can slide along the guide groove 232.

[0086] Furthermore, a limiting cap is provided at the second end of the guide pin 24, and the guide groove 232 is configured as a recessed groove provided on the force arm 23. When the guide pin 24 is installed on the first chassis frame 11, the limiting cap abuts against the side of the recessed groove to prevent the guide pin 24 from being separated from the force arm 23.

[0087] In some embodiments, the locking hook 22 provided in the embodiments of the present application includes a hook body 221, and the hook body 221 is arranged between the first chassis frame 11 and the force arm 23. Along the first direction, one end of the hook body 221 is provided with a hinge hole 2211, and the first chassis frame 11 is provided with a hinge shaft. The hook body 221 is installed on the hinge shaft through the hinge hole 2211, and the hook body 221 can rotate relative to the first chassis frame 11, thereby forming a rotation center of the locking hook 22.

[0088] In order to facilitate locking the lock hook 22 and the locking pin 21, the hook body 221 of the embodiment of the present application is protruded toward the second chassis frame 12, and the limiting groove 2221 is set in the protruding part, so that the locking pin 21 is clamped into the limiting groove 2221. Such a configuration not only ensures that the end of the locking pin 21 protrudes from the second chassis frame 12 and is located in the gap between the first chassis frame 11 and the second chassis frame 12, but also enables the locking pin 21 to be clamped into the limiting groove 2221.

[0089] Exemplarily, the lock hook 22 further includes a block 222, which is disposed on the surface of the hook body 221 facing the second chassis frame 12; the block 222 is disposed protruding from the surface of the hook body 221 along the second direction, that is, the block 222 is disposed close to the locking pin 21. The above-mentioned limiting groove 2221 is disposed at the bottom of the block 222. For example, the middle area of ​​the bottom of the block 222 is recessed toward the inside and forms a limiting groove 2221 that cooperates with the locking pin 21.

[0090] Furthermore, the block 222 is located at one end of the hook body 221 away from the rotation center along the first direction and is located outside the first chassis frame 11. With this arrangement, a larger first torque is formed between the block 222 and the rotation center. When the first chassis frame 11 and the second chassis frame 12 are locked, the abutment portion 231 can drive the lock hook 22 to rotate under the action of a smaller abutment force, so as to lock the chassis 10.

[0091] On the basis of the above-mentioned embodiment, a guide slope is provided on one side of the block 222 facing the rotation center, the guide slope extends obliquely downward toward the front side along the first direction, and the guide slope is configured as a guide portion 2222. When the first chassis frame 11 moves toward the front side relative to the second chassis frame 12, part of the locking pin 21 is located on the moving path of the guide slope and abuts against the guide slope.

[0092] When the guide slope abuts against the locking pin 21, the abutting force generated therebetween causes the lock hook 22 to rotate counterclockwise, so that the clamping block 222 can be lifted. The first chassis frame 11 continues to slide, and the limiting groove 2221 can be located below the locking pin 21. At this time, applying a pressing force to the lock hook 22 can cause the limiting groove 2221 to engage with the locking pin 21.

[0093] Furthermore, the lock hook 22 further includes an unlocking lever 223, which is disposed at the bottom of the hook body 221. Along the first direction, the unlocking lever 223 is disposed close to the rotation center, and the end of the unlocking lever 223 forms an unlocking portion 2231. For example, the unlocking lever 223 can be designed as an L-shaped structure or a T-shaped structure, which includes a vertical section and a horizontal extension section, one end of the vertical section is connected to the hook body 221, and the other end of the vertical section extends along the third direction and is connected to the horizontal extension section, and the end of the horizontal extension section forms the unlocking portion 2231.

[0094] The unlocking portion 2231 in the embodiment of the present application is arranged opposite to the abutting portion 231 of the force arm 23, and the unlocking portion 2231 is arranged opposite to the abutting portion 231 along the first direction, and the unlocking portion 2231 is located on the moving path of the abutting portion 231. When the force arm 23 moves toward the rear side along the first direction, the abutting portion 231 abuts against the unlocking portion 2231 and applies an abutting force to the unlocking portion 2231, and the abutting force is converted into a rotational force of the lock hook 22, so that the lock hook 22 rotates to disengage the limiting groove 2221 from the locking pin 21.

[0095] It should be noted that the unlocking lever 223 provided in the embodiment of the present application is arranged close to the rotation center, and the second torque formed by the unlocking portion 2231 and the rotation center is smaller than the first torque, so the unlocking force applied to the unlocking portion 2231 is much larger than the abutting force of the guide portion 2222. Such an arrangement can prevent the chassis 10 in a locked state from opening accidentally, thereby improving the operating reliability of the mobility scooter 100.

[0096] Preferably, in the embodiment of the present application, the unlocking lever 223 and the hook body 221 are located in the same rotation plane along the second direction, that is, along the direction perpendicular to the hook body 221, the unlocking lever 223 and the hook body 221 are located in the same rotation plane. In this way, compared with the case where the unlocking lever 223 is located on the side of the hook body 221 away from the first chassis frame 11, the size of the locking structure along the second direction can be reduced, which is conducive to the compact structure of the mobility scooter 100.

[0097] In order to simplify the locking and unlocking operations of the locking mechanism 20, the first chassis frame 11 provided in the embodiment of the present application is provided with an angle limiting portion 111, which is provided close to the rotation center and is located on the rotation path of the lock hook 22 and can abut against the hook body 221 of the lock hook 22. In this way, the rotation angle of the lock hook 22 can be limited, so as to avoid a large rotation angle of the lock hook 22 resulting in a long operation time and affecting the user experience.

[0098] Preferably, the locking mechanism 20 provided in the embodiment of the present application further includes an elastic member 25, which is disposed between the lock hook 22 and the first chassis frame 11, and is used to provide a locking force to the lock hook 22. When the chassis 10 is locked, the force arm 23 is pushed forward in the first direction, the first chassis frame 11 moves relative to the second chassis frame 12, and the abutment force between the guide slope and the locking pin 21 needs to overcome the elastic force of the elastic member 25, and the lock hook 22 rotates. When the locking pin 21 is opposite to the limiting groove 2221 of the lock hook 22, under the action of the elastic member 25, the limiting groove 2221 is engaged with the locking pin 21.

[0099] Accordingly, when the chassis 10 is unlocked, the force arm 23 is dragged backward along the first direction to move the first chassis frame 11 relative to the second chassis frame 12, and the abutment force applied by the abutment portion 231 to the unlocking portion 2231 needs to overcome the elastic force of the spring and rotate the lock hook 22 to disengage the locking pin 21 from the limiting groove 2221. Such a configuration, based on the elastic force of the elastic member 25, can not only simplify the unlocking and locking operations, but also improve the stability of the locking of the chassis 10.

[0100] See also Figure 2 The link folding mechanism 30 in the embodiment of the present application includes at least a first link mechanism composed of multiple components; and / or a second link mechanism composed of multiple components, wherein the first link mechanism and the second link mechanism have some identical components; the link folding mechanism 30 is described below respectively.

[0101] The link folding mechanism 30 includes a first link mechanism, which can be selectively disposed on the side of the chassis 10 along the second direction and is rotatably connected relative to the chassis 10. The rotation plane of the first link mechanism is within the first plane, which is the plane where the third direction and the first direction are located, and is located outside the chassis 10 along the second direction.

[0102] Specifically, the first linkage mechanism includes a seat bracket 32, a seat support frame 31 and a support 36; wherein the seat bracket 32 ​​is used to install a seat cushion. When the mobility scooter 100 is in the unfolded state, the seat bracket 32 ​​is located at the rear end of the chassis 10 along the first direction, and the seat bracket 32 ​​is located above the chassis 10 along the third direction. A certain space is maintained between the seat bracket 32 ​​and the chassis 10 along the third direction, and the seat bracket 32 ​​maintains a certain distance from the steering rod along the first direction to facilitate the user to sit and operate the steering rod.

[0103] The seat support 32 is disposed between the chassis 10 and the seat support frame 31. The seat support 32 includes a first seat link 321 and a second seat link 322. The first seat link 321 and the second seat link 322 are spaced apart along a first direction. The first ends of the first seat link 321 and the second seat link 322 are rotatably connected to the seat support frame 31, respectively, and are connected at different positions of the seat support frame 31.

[0104] In the second direction, the support 36 is arranged on one side of the chassis 10, that is, the support 36 can be arranged on the outside of the chassis 10. The second ends of the first seat link 321 and the second seat link 322 are respectively rotatably connected to the support 36 and connected at different positions of the support 36. Therefore, the first seat link 321, the second seat link 322, the support 36 and the seat support frame 31 form the above-mentioned first link mechanism, and the first link mechanism can be folded and unfolded. Further, when the first link mechanism is completely folded, the seat support frame 32 is located on the side of the chassis 10 in the second direction.

[0105] In the foldable scooter in the related art, the lifting and folding mechanism is located between the chassis and the seat cushion, which makes the folded scooter thick and inconvenient to carry. However, after the scooter 100 in the embodiment of the present application is fully folded, along the second direction, the seat bracket 32 ​​is located on one side of the chassis 10, which does not occupy the space above the chassis 10, and can reduce the thickness of the folded scooter 100, thereby reducing the folded size of the scooter 100 and making it easier to carry.

[0106] The mobility scooter 100 provided in the embodiment of the present application further includes a backrest bracket 33 and a transmission connecting rod 34, wherein the backrest bracket 33 is used to install a backrest cushion and is arranged on the rear side of the seat support frame 31 along the first direction. The backrest bracket 33 is rotatably connected to the seat support frame 31 and forms a first rotation point.

[0107] The transmission link 34 is used to connect the seat bracket 32 ​​and the backrest bracket 33. Exemplarily, the transmission link 34 is arranged between the seat bracket 32 ​​and the backrest bracket 33, and the two ends of the transmission link 34 are respectively rotatably connected with the backrest bracket 33 and the seat bracket 32, and form a second rotation point and a third rotation point respectively.

[0108] Exemplarily, the seat bracket 32 ​​includes a first seat link 321 and a second seat link 322, and one end of the transmission link 34 is rotatably connected to the backrest bracket 33 to form a second rotation point. The other end of the transmission link 34 is selectively rotatably connected to the first seat link 321 or the second seat link 322 to form a third rotation point. Therefore, the backrest bracket 33, the transmission link 34, the seat bracket 32 ​​and the seat support frame 31 form a second link mechanism, that is, the link folding mechanism 30 in this embodiment also includes a second link mechanism.

[0109] In the embodiment of the present application, the line between the first rotation point and the second rotation point is defined as the first line, and the line between the second rotation point and the third rotation point is defined as the second line, and when the scooter 100 is fully unfolded, the angle formed between the first line and the second line is in the range of 0° to 10°.

[0110] Preferably, the angle formed between the first connecting line and the second connecting line in the embodiment of the present application is configured to be 0°; that is, the first rotation point, the second rotation point and the third rotation point are collinear when the second linkage mechanism is fully extended. In other words, the first rotation point, the second rotation point and the third rotation point are on the same straight line.

[0111] With such a configuration, when the mobility scooter 100 is in the unfolded state and is further locked by the locking assembly, the second link mechanism is in a self-locking state, and the transmission link 34 not only has a transmission connection function, but also serves as a force-bearing rod to support the seat support frame 31. When the driver and passenger drive the mobility scooter 100, the transmission link 34 can share part of the gravity, that is, part of the gravity acts on the locking pin 21 of the locking assembly, and part of the gravity acts on the transmission link 34, so as to reduce the bearing strength of the locking pin 21.

[0112] The mobility scooter 100 provided in the embodiment of the present application further includes a first rod 35 , a first end of the first rod 35 is connected to the first chassis frame 11 , and a second end of the first rod 35 is connected to the first seat link 321 or the second seat link 322 .

[0113] It is understandable that if the chassis 10 is linked with the first linkage mechanism, the second end of the first rod 35 is linked with the first seat link 321. If the chassis 10 is linked with the second linkage mechanism, the second end of the first rod 35 is linked with the second seat link 322, the second seat link 322 is arranged at the rear side of the first seat link 321 along the first direction, and the other end of the second seat link 322 is rotatably connected with the transmission link 34.

[0114] As follows, the embodiment of the present application is described by taking the linkage of the chassis 10 and the second link mechanism as an example. The second seat link 322 has a bent portion at one end away from the seat support frame 31, and along the first direction, the bent portion is arranged at the rear side of the support 36 and bypasses the support 36 to be rotatably connected to the first rod 35.

[0115] The second seat link 322 includes a first end and a second end, wherein the first end of the second seat link 322 is rotatably connected to the seat support frame 31 , and a portion of the second seat link 322 close to the first end is rotatably connected to the transmission link 34 .

[0116] For example, a support arm is provided at a portion of the second seat link 322 close to the first end, and the support arm extends toward the transmission link 34. One end of the transmission link 34 is rotatably connected to the backrest bracket 33 to form a second rotation point, and the other end of the transmission link 34 is connected to the support arm to form a third rotation point.

[0117] The second end of the second seat link 322 is usually rotatably connected to the support 36. In order to link the above-mentioned first chassis frame 11 with the second link mechanism, the second end of the second seat link 322 has an extension section, the extension section and the second seat link 322 are an integral piece, and the extension section is configured as a bending portion, and the bending portion is arranged on the rear side of the support 36.

[0118] The bent portion bypasses the support 36 and is rotatably connected to the first rod 35. In this way, the bent portion not only forms an escape space between the chassis 10, but also effectively increases the swing range of the first rod 35, thereby increasing the sliding displacement of the first chassis frame 11 along the first direction. When the second link mechanism is folded or unfolded, the first chassis frame 11 and the second chassis frame 12 can be automatically stored and unfolded.

[0119] It should be noted that the first rod is connected to the force arm, or the first rod is configured as a force arm. If the force arm is connected to the first rod, the force arm is arranged between the connecting rod folding mechanism and the first chassis frame, and the connecting rod folding mechanism drives the force arm to move through the first rod. Preferably, the first rod is configured as a force arm, and the end of the first rod is slidably connected to the first chassis frame.

[0120] The various embodiments or implementation methods in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referenced to each other.

[0121] It should be noted that the embodiments represented by "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments", etc. mentioned in the specification may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when describing specific features, structures or characteristics in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such features, structures or characteristics in conjunction with other embodiments that are explicitly or not explicitly described.

[0122] In general, terms should be understood, at least in part, by the context in which they are used. For example, the term "one or more" as used herein may be used to describe any feature, structure, or characteristic in a singular sense, or may be used to describe a combination of features, structures, or characteristics in a plural sense, depending, at least in part, on the context. Similarly, terms such as "a" or "" may also be understood to convey singular usage or to convey plural usage, depending, at least in part, on the context.

[0123] It should be easily understood that “on,” “above,” and “over” in the present disclosure should be interpreted in the broadest manner, so that “on” not only means “directly on something,” but also includes the meaning of “on something” with intervening features or layers therebetween, and “above” or “over” not only includes the meaning of “above” or “over,” but also may include the meaning of “above” or “over something” with no intervening features or layers therebetween (i.e., directly on something).

[0124] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A chassis, characterized in that: It includes a first chassis frame, a second chassis frame and a locking mechanism; The first chassis frame and the second chassis frame are arranged opposite to each other along a first direction, and the first chassis frame slides relative to the second chassis frame so that the chassis can be stored or unfolded; When the chassis is in the storage state, the first chassis frame slides onto the second chassis frame, and the two at least partially overlap; The locking mechanism is arranged between the first chassis frame and the second chassis frame, and the locking mechanism is configured to lock the first chassis frame and the second chassis frame when the chassis is fully unfolded; and when the chassis is stored, the locking mechanism unlocks the locked state of the first chassis frame and the second chassis frame.

2. The chassis according to claim 1, characterized in that: The first chassis frame is arranged at the front side of the second chassis frame along the first direction; The first chassis frame is slidably sleeved on the second chassis frame, and the second chassis frame is fixed.

3. The chassis according to claim 2, characterized in that: The locking mechanism includes a locking pin and a locking hook; The locking pin is disposed on the second chassis frame, and the locking pin is configured to be receivable in a gap between the first chassis frame and the second chassis frame; The locking hook is rotatably connected to the first chassis frame, and the locking hook comprises a limiting groove, a guide portion and an unlocking portion, and the limiting groove and the guide portion are respectively opposite to the locking pin along a first direction; The guide portion is configured so that when the chassis is unfolded, the guide portion abuts against the locking pin and causes the locking hook to rotate; the limiting groove is configured so that when the chassis is fully unfolded, the locking pin is engaged in the limiting groove; The unlocking portion is configured such that when the chassis is stored, the unlocking portion receives the unlocking force and drives the lock hook to rotate, and the locking pin escapes from the limiting groove.

4. The chassis according to claim 3, characterized in that: The locking mechanism also includes a force application arm; The first end of the force-applying arm is slidably connected to the first chassis frame, and the second end of the force-applying arm is configured as a force-applying portion; The first end of the force-applying arm has an abutment portion cooperating with the unlocking portion, and the abutment portion is configured to abut against the unlocking portion and provide an unlocking force when the force-applying portion is subjected to force and the force-applying arm slides relative to the locking hook.

5. The chassis according to claim 4, characterized in that: A guide pin is provided between the first chassis frame and the locking hook; A guide groove is provided at the first end of the force application arm, the guide pin is slidably installed in the guide groove, and the end of the guide pin is fixed to the first chassis frame.

6. The chassis according to claim 3, characterized in that: The locking hook comprises a hook body; Along the first direction, one end of the hook body is provided with a hinge hole; The hook body is mounted on the first chassis frame through the hinge hole and forms a rotation center of the locking hook.

7. The chassis according to claim 6, characterized in that The locking hook also includes a clamping block; The clamping block is arranged on the surface of the hook body facing the second chassis frame; The clamping block is located at an end of the hook body away from the rotation center along the first direction and outside the first chassis frame; The bottom of the clamping block is recessed to form the limiting groove.

8. The chassis according to claim 7, characterized in that A guiding inclined surface is provided on one side of the clamping block facing the rotation center, and the guiding inclined surface is configured as the guiding portion.

9. The chassis according to claim 6, characterized in that: The locking hook further comprises an unlocking lever disposed at the bottom of the hook body; Along the first direction, the unlocking lever is arranged close to the rotation center, and the end of the unlocking lever forms the unlocking portion.

10. The chassis according to claim 9, characterized in that Along a direction perpendicular to the hook body, the unlocking lever and the hook body are located in the same rotation plane.

11. The chassis according to claim 6, characterized in that The first chassis frame is provided with an angle limiting portion; The angle limiting portion is arranged close to the rotation center, is located on the rotation path of the lock hook, and abuts against the lock hook.

12. A chassis according to any one of claims 3 to 11, characterised in that The locking mechanism further comprises an elastic member; The elastic member is disposed between the locking hook and the first chassis frame, and the elastic member is used to provide a locking force to the locking hook.

13. A mobility scooter, characterized in that: A chassis comprising a link folding mechanism and any one of claims 1 to 12; The chassis comprises a first chassis frame and a second chassis frame, the first chassis frame and the second chassis frame are arranged opposite to each other along a first direction, and the first chassis frame slides relative to the second chassis frame; The link folding mechanism is configured to be linked with the first chassis frame, and when the link folding mechanism is folded, the chassis is stored; Furthermore, when the link folding mechanism is unfolded, the chassis is unfolded.

14. The mobility scooter according to claim 13, characterized in that: The chassis also includes a force application arm; Along the first direction, the first chassis frame is arranged on the front side of the second chassis frame, the first chassis frame is slidably sleeved on the second chassis frame, and the second chassis frame is fixed; The force-applying arm is arranged between the connecting rod folding mechanism and the first chassis frame, and the connecting rod folding mechanism drives the force-applying arm to move.

15. The mobility scooter according to claim 14, characterized in that: The connecting rod folding mechanism also includes a first rod; The first rod is connected to the force application arm, or the first rod is configured as the force application arm.

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