CN216783710U - Vehicle body swing arm assembly and scooter - Google Patents

Abstract

The utility model discloses a vehicle body swing arm assembly and a scooter, which comprises a vehicle body, a swing arm and a detection device, wherein the swing arm is provided with a first end and a second end, the first end of the swing arm is connected with the vehicle body, the second end of the swing arm is suitable for being connected with wheels, and the swing arm can swing relative to the vehicle body and can reset after swinging; the detection device is arranged on the vehicle body and the swing arm and is suitable for detecting the swing angle of the swing arm when the vehicle body carries a person, or the swing arm is provided with a first detection point and a second detection point, and the detection device is suitable for detecting the distance change between the first detection point and the second detection point when the vehicle body carries a person. The vehicle body swing arm assembly can detect whether a user stably stands on the pedal, so that danger caused by mistaken touch of an accelerator is avoided, and the use safety of the scooter is improved.

Description

Vehicle body swing arm assembly and scooter

Technical Field

The utility model relates to the technical field of vehicle-mounted people detection for transportation, in particular to a vehicle body swing arm assembly and a transportation vehicle with the same.

Background

As a short-distance travel tool, the electric scooter has the characteristics of flexibility, portability and convenient storage. When electric scooter used, the user need stand on the footboard, then can control electric scooter through rotatory throttle and remove. However, in the related art, the user may touch the accelerator by mistake when not standing on the pedal, which is likely to cause a safety accident, and is not favorable for the safe use of the electric scooter.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.

Therefore, the embodiment of the utility model provides the vehicle body swing arm assembly which can detect whether a user stably stands on a pedal or not, so that the danger caused by mistakenly touching an accelerator is avoided, and the use safety of the scooter is improved.

The embodiment of the utility model also provides a scooter applying the vehicle body swing arm assembly.

A vehicle body swing arm assembly according to an embodiment of the present invention includes: a vehicle body; the swing arm is provided with a first end and a second end, the first end of the swing arm is connected with the vehicle body, the second end of the swing arm is suitable for being connected with wheels, and the swing arm can swing relative to the vehicle body and can reset after swinging; the detection device is arranged on the vehicle body and the swing arm and is suitable for detecting the swing angle of the swing arm when the vehicle body carries a person, or a first detection point is arranged on the swing arm and a second detection point is arranged on the vehicle body, and the detection device is suitable for detecting the distance change between the first detection point and the second detection point when the vehicle body carries a person.

According to the vehicle body swing arm assembly provided by the embodiment of the utility model, whether a user stands on the pedal can be detected, so that the danger caused by mistakenly touching the accelerator is avoided, and the use safety of the scooter is improved.

In some embodiments, the detection device includes a hall sensor and a magnet, one of the hall sensor and the magnet is provided on the vehicle body, and the other is provided on the swing arm.

In some embodiments, the swing arm is rotatably mounted to the vehicle body via a pivot shaft, the magnet includes a first magnet and a second magnet, the first magnet and the second magnet are provided on an outer peripheral side of the pivot shaft and are arranged at intervals along a circumferential direction of the pivot shaft, and at least a part of the hall sensor is fitted between the first magnet and the second magnet and moves between the first magnet and the second magnet when the swing arm swings.

In some embodiments, the swing arm is rotatably mounted to the vehicle body via a pivot shaft, the hall sensor and the magnet are arranged at intervals in an axial direction of the pivot shaft, the magnet includes a first magnet and a second magnet, the first magnet and the second magnet are provided on an outer peripheral side of the pivot shaft and arranged at intervals in a circumferential direction of the pivot shaft, and the hall sensor is adapted to be moved and switched between a position opposing the first magnet and a position opposing the second magnet when the swing arm swings.

In some embodiments, the magnet is arc-shaped, the swing arm is rotatably mounted on the vehicle body through a pivot shaft, and the magnet extends along the circumferential direction of the pivot shaft in a bending manner.

In some embodiments, the magnet is provided on an outer peripheral wall of the swing arm, and the hall sensor is provided on the vehicle body on an outer peripheral side of the swing arm.

In some embodiments, the detection apparatus further comprises a first insert and a second insert, the magnet is fitted in the first insert, the hall sensor is fitted in the second insert, one of the first insert and the second insert is provided on the vehicle body, and the other is provided on the swing arm.

In some embodiments, the detection device includes a distance measuring sensor and a detection piece, one of the distance measuring sensor and the detection piece is disposed at the first detection point, and the other one is disposed at the second detection point, and the distance measuring sensor and the detection piece are adapted to detect a distance between the first detection point and the second detection point.

In some embodiments, the detecting device is an encoder, the swing arm is rotatably mounted on the vehicle body through a pivot shaft, the encoder is connected between the pivot shaft and the swing arm, and the encoder is adapted to detect a swing angle of the swing arm.

In some embodiments, the swing arm includes a front swing arm and a rear swing arm, and at least one of between the front swing arm and the vehicle body and between the rear swing arm and the vehicle body is provided with the detection device.

In some embodiments, the vehicle body includes a front fork and a frame, the front fork being disposed at a front end of the frame, the front swing arm being rotatably coupled to the front fork, and the rear swing arm being rotatably coupled to a rear end of the frame.

The scooter provided by the embodiment of the utility model comprises the vehicle body swing arm assembly, and the vehicle body swing arm assembly is the vehicle body swing arm assembly in any embodiment.

Drawings

Fig. 1 is an overall structural schematic view of a vehicle body swing arm assembly according to an embodiment of the utility model.

Fig. 2 is an exploded view of the body swing arm assembly of fig. 1.

Fig. 3 is a partially enlarged schematic view at a in fig. 2.

Fig. 4 is a partially enlarged schematic view at B in fig. 2.

Fig. 5 is a schematic view of the detection apparatus of fig. 1.

Fig. 6 is a schematic view of a detection apparatus according to another embodiment of the present invention.

FIG. 7 is a schematic view of a detection apparatus according to yet another embodiment of the present invention.

Fig. 8 is a partially enlarged schematic view at C in fig. 7.

FIG. 9 is a schematic view of a detection apparatus according to still another embodiment of the present invention.

Fig. 10 is a partially enlarged schematic view of fig. 9 at D.

FIG. 11 is a schematic view of a detection apparatus according to another embodiment of the present invention.

FIG. 12 is a schematic view of a detection apparatus according to yet another embodiment of the present invention.

Reference numerals:

a vehicle body 1; a frame 11; a front fork 12; a pivot shaft 13;

a swing arm 2; a front swing arm 21; a rear swing arm 22;

a front wheel 3;

a rear wheel 4;

a detection device 5; a hall sensor 51; a magnet 52; a first magnet 521; a second magnet 522; a first insert 53; a second insert 54; a detection piece 55; a ranging sensor 56; a code wheel 57; a detection ring 58.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

As shown in fig. 1 to 5, a vehicle body swing arm assembly according to an embodiment of the present invention includes a vehicle body 1, a swing arm 2, and a detection device 5.

The vehicle body 1 may include a frame 11 and a front fork 12, the front fork 12 being provided at a front end of the frame 11, for example, the front fork 12 may be pivotally fitted at the front end of the frame 11.

The swing arm 2 is provided with a first end and a second end, the first end of the swing arm 2 is connected with the vehicle body 1, the second end of the swing arm 2 is suitable for being connected with a wheel, and the swing arm 2 can swing relative to the vehicle body 1 and can reset after swinging.

Specifically, as shown in fig. 1 to 3, the swing arm 2 extends substantially along the front-back direction, the first end of the swing arm 2 is the rear end of the swing arm 2, the second end of the swing arm 2 is the front end of the swing arm 2, the rear end of the swing arm 2 can be connected with the vehicle body 1 through a damping mechanism, for example, the damping mechanism can include a pivot shaft 13, the front end of the vehicle frame 11 can be provided with a sleeve, an elastic member is fixed in the sleeve, the elastic member can be made of rubber, the pivot shaft 13 is arranged in the sleeve in a penetrating manner and is in rotation-stopping fit with the elastic member, the rear end of the swing arm 2 is connected with the pivot shaft 13, therefore, when the swing arm 2 rotates, the swing arm 2 can extrude the elastic member, when the external force effect that the swing arm 2 receives reduces, the swing arm 2 can reset by itself under the effect of the elastic member, and the damping and resetting of the swing arm 2 can be realized through the elastic member.

The detection device 5 is arranged on the vehicle body 1 and the swing arm 2, the detection device 5 is suitable for detecting the swing angle of the swing arm 2 when the vehicle body 1 carries a person, or a first detection point is arranged on the swing arm 2, a second detection point is arranged on the vehicle body 1, and the detection device 5 is suitable for detecting the distance change between the first detection point and the second detection point when the vehicle body 1 carries a person.

Specifically, detection device 5 can be angle detection device, and when swing arm 2 swung, detection device 5 can detect the swing angle of swing arm 2 and give the controller with detected signal transmission, and the controller can confirm the swing angle of swing arm 2 through the size of analysis detected signal, then can judge whether manned on automobile body 1.

It is understood that, in some other embodiments, the detecting device 5 may also be a distance detecting device, for example, the first detecting point may be disposed on the swing arm 2, the second detecting point may be disposed on the front fork 12, when the swing arm 2 swings, the distance between the first detecting point and the second detecting point changes, and the detecting device 5 may determine whether the person is carried on the vehicle body 1 by detecting the distance between the first detecting point and the second detecting point.

It should be noted that the controller can be electrically connected with the accelerator and can control the opening and closing of the accelerator, when the swing amplitude of the swing arm 2 is large (namely a user stands on the vehicle body 1), the controller can control the accelerator to open, and the controller can drive the scooter to run by regulating and controlling the accelerator.

According to the vehicle body swing arm assembly provided by the embodiment of the utility model, the vehicle body swing arm assembly can detect whether a user stands on the pedal or not through detecting the swing angle of the swing arm 2, then the controller can unlock the accelerator, and the accelerator is in a locked state when the user does not stand on the pedal, so that the danger caused by mistakenly touching the accelerator is avoided, and the use safety of the scooter is improved.

In some embodiments, the detection device 5 includes a hall sensor 51 and a magnet 52, and one of the hall sensor 51 and the magnet 52 is provided on the vehicle body 1 and the other is provided on the swing arm 2.

Specifically, as shown in fig. 2 and 3, the hall sensor 51 may be provided on the front fork 12, and the magnet 52 may be provided on the swing arm 2, and when the swing arm 2 swings, relative movement may occur between the hall sensor 51 and the magnet 52, and thus, the hall sensor 51 may sense a change in a magnetic field, so that detection of a swing angle of the swing arm 2 may be achieved.

In some embodiments, the swing arm 2 is rotatably fitted to the vehicle body 1 via the pivot shaft 13, the magnet 52 includes a first magnet and a second magnet provided on the outer peripheral side of the pivot shaft 13 and arranged at intervals along the circumferential direction of the pivot shaft 13, and at least part of the hall sensor 51 is fitted between the first magnet and the second magnet and moves between the first magnet and the second magnet when the swing arm 2 swings.

Specifically, as shown in fig. 3 and 5, a pivot shaft 13 is provided on the front fork 12, a square insertion hole is provided at the rear end of the swing arm 2, the pivot shaft 13 is fitted into the square insertion hole in a rotation-stopped manner, a first magnet and a second magnet are provided on the outer peripheral side of the square insertion hole and are arranged at intervals along the circumference of the square insertion hole, the hall sensor 51 is fixed on the front fork 12, and a part of the hall sensor 51 is fitted between the first magnet and the second magnet, and when the swing arm 2 swings, the hall sensor 51 can swing between the first magnet and the second magnet, whereby the detection of the swing angle of the swing arm 2 can be realized.

Preferably, as shown in fig. 5, the swing arm 2 has an inner side surface for facing the front fork 12, an arc-shaped groove may be provided on the inner side surface of the swing arm 2, the arc-shaped groove extends along the circumferential direction of the square insertion hole, the first magnet is provided at one end of the arc-shaped groove, the second magnet is provided at the other end of the arc-shaped groove, and a part of the hall sensor 51 is fitted in the arc-shaped groove and located between the first magnet and the second magnet. The arrangement of the arc-shaped groove enables the hall sensor 51 to be inserted into the swing arm 2, thereby avoiding the situation that a large gap needs to be reserved between the swing arm 2 and the front fork 12.

In some embodiments, the swing arm 2 is rotatably mounted on the vehicle body 1 via the pivot shaft 13, the hall sensors 51 and the magnets 52 are arranged at intervals along the axial direction of the pivot shaft 13, the magnets 52 include a first magnet and a second magnet, the first magnet and the second magnet are provided on the outer peripheral side of the pivot shaft 13 and arranged at intervals along the circumferential direction of the pivot shaft 13, and the hall sensors 51 are adapted to be moved and switched between a position opposing the first magnet and a position opposing the second magnet when the swing arm 2 swings.

Specifically, as shown in fig. 9 and 10, the hall sensor 51 may be provided on the front fork 12, the first magnet and the second magnet may be provided on the swing arm 2, the hall sensor 51 has an outer end face facing the swing arm 2, the first magnet and the second magnet each have an inner end face facing the front fork 12, and when the swing arm 2 is fixed with the front fork 12, the outer end face and the inner end face of the first magnet, the outer end face of the hall sensor 51 and the inner end face of the second magnet are all arranged in parallel at intervals in the extending direction of the drive shaft, with the inner end face of the first magnet and the inner end face of the second magnet being substantially parallel. During the swing of the swing arm 2, the inner end face of the hall sensor 51 can move to a position opposite to the inner end face of the second magnet at a position opposite to the inner end face of the first magnet.

Preferably, a groove may be formed in the front fork 12, an arc-shaped groove may be formed in the swing arm 2, the hall sensor 51 may be fitted in the groove, an outer end surface of the hall sensor 51 is substantially parallel to the surface of the front fork 12, the first magnet and the second magnet may be fitted in the arc-shaped groove, and an inner end surface of the first magnet and an inner end surface of the second magnet are substantially flush with the surface of the swing arm 2. Therefore, the condition that a larger gap needs to be reserved between the swing arm 2 and the front fork 12 can be avoided, and the width of the scooter body 1 of the scooter can be reduced.

In some embodiments, the magnet is arc-shaped, the swing arm 2 is rotatably mounted on the vehicle body 1 through the pivot shaft 13, and the magnet 52 extends along the circumferential direction of the pivot shaft 13 in a curved manner.

Specifically, as shown in fig. 6, the magnet 52 may be a single magnet 52, one end of the magnet 52 is an S pole, the other end of the magnet 52 is an N pole, the magnet 52 is tile-shaped, an arc-shaped groove may be disposed on an inner side surface of the swing arm 2, the magnet 52 is embedded in the arc-shaped groove, a thickness dimension of the magnet 52 is smaller than a thickness dimension of the arc-shaped groove in a radial direction of the pivot shaft 13, the hall sensor 51 is fixed on the front fork 12, a part of the hall sensor 51 is also fitted in the arc-shaped groove, when the swing arm 2 swings, the hall sensor 51 can move along an outer circumferential surface of the magnet 52, and a swing angle of the swing arm 2 can be detected through movement changes of the hall sensor 51 in the S pole and the N pole of the magnet 52.

In some embodiments, a magnet is provided on the outer peripheral wall of the swing arm 2, and the hall sensor 51 is provided on the vehicle body 1 on the outer peripheral side of the swing arm 2.

Specifically, as shown in fig. 7 and 8, the magnet 52 may have an arc shape, the magnet 52 is provided on the outer peripheral surface of the swing arm 2, the outer peripheral surface of the magnet 52 is substantially coplanar with the outer peripheral surface of the swing arm 2, the hall sensor 51 is provided on the front fork 12 and protrudes from the side surface of the front fork 12, and the hall sensor 51 is located on one side of the magnet 52. When the swing arm 2 swings, the hall sensor 51 can move against the outer peripheral surface of the magnet 52. The hall sensor 51 and the magnet 52 are convenient to repair and replace.

In some embodiments, the detection device 5 further includes a first insert 53 and a second insert 54, the magnet 52 is fitted in the first insert 53, the hall sensor 51 is fitted in the second insert 54, one of the first insert 53 and the second insert 54 is provided on the vehicle body 1, and the other is provided on the swing arm 2.

Specifically, as shown in fig. 3 and 4, the first insert 53 has a box shape and a certain curvature, the first insert 53 is fitted to the swing arm 2, the second insert 54 has a rectangular parallelepiped shape, and the second insert 54 is fitted to the front fork 12. The magnet 52 is fixed in the first insert 53 and the hall sensor 51 is fixed in the second insert 54. The first insert 53 and the second insert 54 have both a protective effect and also facilitate the integration of the magnet 52 and the hall sensor 51.

In some embodiments, the detecting device 5 includes a distance measuring sensor 56 and a detecting piece 55, one of the distance measuring sensor 56 and the detecting piece 55 is disposed at a first detecting point, and the other is disposed at a second detecting point, and the distance measuring sensor 56 and the detecting piece 55 are adapted to detect the distance between the first detecting point and the second detecting point.

Specifically, as shown in fig. 11, the distance measuring sensor 56 may be an infrared sensor, an ultrasonic sensor, etc., the detecting piece 55 may be an L-shaped plate, the detecting piece 55 is fixed at the second detecting point of the front fork 12 by a screw, the distance measuring sensor 56 is fixed at the first detecting point of the swing arm 2, when the swing arm 2 swings, the distance measuring sensor 56 can measure the distance between the detecting piece 55 and the distance measuring sensor 56, and the swing angle of the swing arm 2 can be obtained by the change of the distance.

In some embodiments, the detecting device 5 is an encoder, the swing arm 2 is rotatably mounted on the vehicle body 1 through a pivot shaft 13, the encoder is connected between the pivot shaft 13 and the swing arm 2, and the encoder is adapted to detect a swing angle of the swing arm 2.

Specifically, as shown in fig. 12, the encoder may include an encoder disk 57 and a detection ring 58, and measurement of the rotation angle is achieved by relative rotation of the detection ring 58 and the encoder disk 57. The encoder can be fixed on swing arm 2, and the transmission shaft of encoder can be connected with the transmission of pivot axle 13 on the front fork 12, and when swing arm 2 rotated, swing arm 2's swing angle accessible encoder detection promptly.

In some embodiments, the swing arm 2 includes a front swing arm 21 and a rear swing arm 22, and at least one of between the front swing arm 21 and the vehicle body 1 and between the rear swing arm 22 and the vehicle body 1 is provided with the detection device 5.

Specifically, as shown in fig. 1 and 2, a front swing arm 21 may be connected to the front fork 12 of the vehicle body 1, and a rear swing arm 22 may be connected to the frame 11 of the vehicle body 1, wherein the front swing arm 21 is configured to be rotatably assembled with the front wheel 3, and the rear swing arm 22 is configured to be rotatably assembled with the rear wheel 4. A detection device 5 may be provided between the front swing arm 21 and the front fork 12, and the detection device 5 is used for detecting the swing angle of the front swing arm 21. In other embodiments, a detection device 5 may also be disposed between the swing arm 22 and the frame 11, and the detection device 5 is used to detect the swing angle of the swing arm 22. Therefore, the flexibility of installation of the detection device 5 is enhanced, and when the detection device 5 is installed between the front swing arm 21 and the front fork 12 and between the rear swing arm 22 and the frame 11, the detection error can be reduced, and the precision of swing angle detection can be improved.

In some embodiments, body 1 includes front fork 12 and frame 11, with front fork 12 disposed at a front end of frame 11, front swing arm 21 rotatably coupled to front fork 12, and rear swing arm 22 rotatably coupled to a rear end of frame 11.

Specifically, the front fork 12 can be pivotally mounted at the front end of the frame 11, the front swing arm 21 is connected to the front fork 12 through a shock absorbing mechanism, the rear swing arm 22 is connected to the rear end of the frame 11 through a shock absorbing mechanism, and the front swing arm 21 and the rear swing arm 22 can play a shock absorbing role when the scooter runs.

A scooter according to an embodiment of the present invention is described below.

The scooter provided by the embodiment of the utility model can be an electric scooter, an electric bicycle and the like, and the scooter comprises a scooter body swing arm assembly which can be the scooter body swing arm assembly described in the embodiment. Preceding wheel 3 rotates the assembly in the front end of preceding swing arm 21, and rear wheel 4 rotates the assembly in the rear end of rear swing arm 22, and the car of riding instead of walk is when riding, and preceding swing arm 21 and rear swing arm 22 can play the shock attenuation effect through the swing, and detection device 5 then can detect preceding swing arm 21 and/or rear swing arm 22's swing angle to will detect signal transmission and give the controller, the controller then can control the locking or the unblock of throttle.

According to the scooter provided by the embodiment of the utility model, the body swing arm assembly of the scooter can detect whether a user stably stands on the pedal, so that the danger caused by mistakenly touching the accelerator is avoided, and the use safety of the scooter is improved.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims (12)

1. A vehicle body swing arm assembly, comprising:

a vehicle body;

the swing arm is provided with a first end and a second end, the first end of the swing arm is connected with the vehicle body, the second end of the swing arm is suitable for being connected with wheels, and the swing arm can swing relative to the vehicle body and can reset after swinging;

the detection device is arranged on the vehicle body and the swing arm and is suitable for detecting the swing angle of the swing arm when the vehicle body carries a person, or a first detection point is arranged on the swing arm and a second detection point is arranged on the vehicle body, and the detection device is suitable for detecting the distance change between the first detection point and the second detection point when the vehicle body carries a person.

2. The vehicle body swing arm assembly of claim 1, wherein the detection device comprises a hall sensor and a magnet, one of which is provided on the vehicle body and the other of which is provided on the swing arm.

3. The vehicle body swing arm assembly according to claim 2, wherein the swing arm is rotatably fitted to the vehicle body through a pivot shaft, the magnets include a first magnet and a second magnet that are provided on an outer peripheral side of the pivot shaft and are arranged at intervals along a circumferential direction of the pivot shaft, and at least part of the hall sensor is fitted between the first magnet and the second magnet and moves between the first magnet and the second magnet when the swing arm swings.

4. The vehicle body swing arm assembly according to claim 2, wherein the swing arm is rotatably fitted to the vehicle body through a pivot shaft, the hall sensor and the magnets are arranged at intervals in an axial direction of the pivot shaft, the magnets include a first magnet and a second magnet, the first magnet and the second magnet are provided on an outer peripheral side of the pivot shaft and arranged at intervals in a circumferential direction of the pivot shaft, and the hall sensor is adapted to be moved and switched between a position opposed to the first magnet and a position opposed to the second magnet when the swing arm swings.

5. The vehicle body swing arm assembly according to claim 2, wherein the magnet is arc-shaped, the swing arm is rotatably fitted to the vehicle body through a pivot shaft, and the magnet extends curvedly along a circumferential direction of the pivot shaft.

6. The vehicle body swing arm assembly of claim 5, wherein the magnet is provided on an outer peripheral wall of the swing arm, and the hall sensor is provided on the vehicle body at an outer peripheral side of the swing arm.

7. The vehicle body swing arm assembly of claim 2, wherein the detection device further comprises a first insert and a second insert, the magnet is fitted within the first insert, the hall sensor is fitted within the second insert, one of the first insert and the second insert is provided on the vehicle body, and the other is provided on the swing arm.

8. The vehicle body swing arm assembly according to claim 1, wherein the detection means comprises a distance measuring sensor and a detection piece, one of the distance measuring sensor and the detection piece is provided at the first detection point and the other is provided at the second detection point, and the distance measuring sensor and the detection piece are adapted to detect a distance between the first detection point and the second detection point.

9. The vehicle body swing arm assembly of claim 1, wherein the detecting means is an encoder, the swing arm is rotatably mounted to the vehicle body by a pivot shaft, the encoder is connected between the pivot shaft and the swing arm, and the encoder is adapted to detect a swing angle of the swing arm.

10. The vehicle body swing arm assembly of any one of claims 1 to 9, wherein the swing arm comprises a front swing arm and a rear swing arm, at least one of between the front swing arm and the vehicle body and between the rear swing arm and the vehicle body being provided with the detection device.

11. The vehicle body swing arm assembly of claim 10, wherein the vehicle body includes a front fork and a frame, the front fork being disposed at a front end of the frame, the front swing arm being rotatably coupled to the front fork, the rear swing arm being rotatably coupled to a rear end of the frame.

12. A scooter, comprising a vehicle body swing arm assembly, the vehicle body swing arm assembly being in accordance with any one of claims 1-11.

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