JPH04274986A - Electric motor-tricycle - Google Patents

Abstract

PURPOSE:To simply disassemble and assemble the body frame of an electric motor tricycle, and prevent generation of looseness at assembling. CONSTITUTION:A body frame 28 is divided into a main frame part 28a having a holder pipe 34 for providing a seat 25 and a rear frame part 28b having a gear case 41, a lock mechanism 35 is provided on the holder pipe 34, connecting bars 36 are provided on both sides of the rear end of the main frame part 28a, the lock mechanism receiving part 44 of the lock mechanism 35 is provided on the member pipe 38 of the rear frame part 28b, and holder brackets 45 are provided on the end parts of side frames 37. By connecting these three points, and hanging up or down the rear part of the main frame part 28a, combination or separation can be performed. The work of combination and separation is simplified, and looseness is not generated at assembling.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric tricycle that has a split structure so that it can be easily transported or stored so that a user can use it anywhere.

0002

[Prior Art] Generally, an electric tricycle has a battery mounted on the body frame and is driven by a motor.
Passengers can start, stop, and move in any direction by operating the handlebars. In addition, for destinations that are quite far away, vehicles are used to transport objects halfway, and in this case, electric tricycles are used that can be disassembled and reassembled so that they can be easily loaded onto a passenger vehicle.

For example, a vehicle body frame 1 shown in FIG. 16 is divided into two parts, a front frame 1a and a rear frame 1b. The front frame 1a has a floor cover 2 on the front end and a main frame pipe 3 on both sides of the rear part.A fitting part 4 is provided at the rear end of the main frame pipe 3, and a stopper is provided on the outer periphery of the connecting part. 5 is formed. Also, floor cover 2
A steering shaft 7 is provided for steering the front wheels 6, and a cross member 9 having seat holder pipes 8 erected is provided on the main frame pipes 3 on both sides. A holder pipe 11 that is inserted into the fitting portion 4 is attached to the rear frame pipe 10 of the rear frame 1b. The rear frame pipe 10 supports a gear case 13 that transmits rotational force to a rear wheel 12, and this portion is covered with a rear cover 14. Further, a hole 16 is formed in the fitting part 4 and the holder pipe 11, through which the pin 15 passes when they are joined. As shown in FIG. 17, the work of integrating the vehicle body frame 1 is carried out using a bumper/inverted stand frame 17 provided at the rear of the rear frame 1b.
is supported when the rear frame 1b is vertically erected, and the holder pipe 11 is directed upward. Next, with the fitting part 4 facing downward, the front frame 1a is lowered from above, and the holder pipe 11 is inserted into the fitting part 4, and the pin 15 is inserted. Dividing the vehicle body frame 1 into two in this way is also proposed in Japanese Patent Laid-Open No. 2-195957.

0004

[Problem to be solved by the invention] However, FIG.
As shown in the figure, the rear frame 1b is fixed and the front frame 1a is
When assembling by moving the rear frame 1b, if the rear frame 1b is supported by the inverted table frame 17, the holder pipe 11 will face upward, so the front frame 1a must be lifted higher than the rear frame 1b, but the front frame 1a is quite heavy. Some weigh up to 20 kg and require labor. Furthermore, if the fitting part 4 and the holder pipe 11 are not aligned accurately, assembly work will be difficult, and disassembly work will also be difficult to remove smoothly. Furthermore, there is a problem in that it is troublesome to set the front and rear frames 1a, 1b vertically and return them to horizontal positions. In this case, 40
It requires the power to move something of around kg. If a spring pin is used when inserting and removing the pin 15, the spring is strengthened to securely fix the pin 15, so force is required to insert and remove the pin 15.

Furthermore, if the alignment is not accurate, there will be backlash between the pin 15 and the hole 16, and between the fitting part 4 and the holder pipe 11, which will cause vibrations during running. There is a problem in that the riding comfort is deteriorated, and increasing the precision also results in a problem in that the production cost increases.

SUMMARY OF THE INVENTION An object of the present invention is to provide a split-type electric tricycle that can be loaded onto an automobile or the like, and whose body can be disassembled and assembled to the extent that the user can carry it out.

[0007]

[Means for Solving the Problems] In order to achieve the above object, the present invention includes a main frame portion having a holder pipe erected at the center of a cross member supported by frame pipes on both sides, and a main frame portion on both sides. The side frame is separated into a rear frame part, which has a member pipe connected to the side frame, and has a center of gravity at the rear and a fall prevention bar attached to the rear end, and a connecting bar is attached outward to the rear end of the frame pipe. At the same time, a locking mechanism having a handle is attached to the upper part of the holder pipe facing backwards, a holder bracket having an upwardly opened notch that engages with the connecting bar is provided at the end of the side frame, and The device is characterized in that a locking mechanism receiving portion is provided at the portion to receive the locking mechanism on the lower side.

[0008]

[Operation] By having the above structure, the rear frame part can be stopped by the anti-falling rod, the lock mechanism receiver and the notch part can be opened upward, and the rear part of the main frame part can be gripped by the handle. By lifting or lowering the locking mechanism and the connecting bar, the locking mechanism and the connecting bar can be easily aligned with the locking mechanism receiver and the notch of the rear frame part. Both frames are then connected by their own weight. Further, in the connected state, the rear frame portion can be removed by simply lifting the rear portion of the main frame portion.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of the present invention will be described below with reference to the accompanying drawings. As shown in FIGS. 12 and 13, an electric tricycle 1
8 has a floor cover 19 installed at the front and a steering shaft 20 erected thereon. The front wheel 21 is connected to the steering shaft 20 via a front fork (not shown). A handlebar 23 having a control box 22 is connected to the upper part of the steering shaft 20. Further, a battery 24 is loaded on the rear part of the floor cover 19, a seat 25 is removably provided above the battery 24, and rear wheels 26 are disposed on both sides of the vehicle body.
It is driven by a motor (not shown) housed inside. The driving position of the passenger is such that he can reach the handlebar 23 when he sits on the seat 25 with his feet on the floor cover 19. Then, operate the various switch levers provided on the control box 22 to adjust the handlebar 2.
It can be driven by moving 3.

Next, the divided structure of the electric tricycle 18 will be explained. As shown in FIGS. 14 and 15, in this embodiment, the seat 25 and battery 24 are separated from the vehicle body, and the vehicle body frame 28 is disassembled into a main frame portion (floor portion) 28a and a rear frame portion (drive portion) 28b. Ru. By dividing it into four parts in this way, the size and weight of each piece can be easily handled (even if two batteries are loaded, only one
It will be divided. ). Fall prevention rod 2 attached to the rear part of the rear frame part 28b
9 is adapted to stand still at a certain angle when the rear part of the main frame part 28a is lifted upward (in the direction of arrow a) to disengage the main frame part 28a. Further, the steering shaft 20 is controlled by an angle changing mechanism 30 provided at the base of the main frame portion 28a.
It can be folded up.

Next, the main frame section 28a and the rear frame section 28b will be explained. As shown in FIG. 1, the main frame portion 28a has frame pipes 31 arranged on both sides, a cross member 32 is provided orthogonally at the rear, and a seat frame pipe 33 (see FIG. 2) is provided at the upper center of the main frame portion 28a. A holder pipe 34 that fits is fixed. A locking mechanism 35 is provided on the upper part of the holder pipe 34 facing backward, and a connecting bar 36 having a groove 36a is fixed outward on the rear side of the frame pipe 31. On the other hand, the rear frame portion 28b
As shown in FIGS. 1, 2, and 7, side frames 37 are provided on both sides, and member pipes 38 connecting these are penetrated through the middle part and fixed by welding, and the rear cover 27 is attached to the side frames 37. It is fixed by a pedestal 39 provided. A gear case 41 that rotates an axle shaft 40 connected to the rear wheel 26 is attached to a hole 37a formed in the lower part of the side frame 37 by a swing arm 42 connected to the gear case 41, and a hole 37a formed in the upper part of both side frames 37 A rear cushion unit 43 is attached to 37b to support the gear case 41. A locking mechanism receiving portion 44 is provided at the center of the member pipe 38 facing forward, and the side frame 37
A holder bracket 45 having an upwardly opened notch 45a is fixed to the lower end of the holder bracket 45.

Next, the locking mechanism 35 and locking mechanism receiving portion 44, which are the main parts of the coupling mechanism of the present invention, will be explained. Note that the connection bar 36 and the holder bracket 45 have been described above, so their explanation will be omitted.

As shown in FIGS. 3 to 6, the locking mechanism 35 includes a U-shaped base bracket 46 fixed with a gap between the shafts of the holder pipe 34, and a base bracket 46 that can be moved up and down and rotated. It consists of a lock bracket 47 that is movably attached and a handle 48 that is attached to the upper part of the lock bracket 47. A bracket 50 is fixed to the center rear end of the base bracket 46 and is bent into a shape that matches the round bar (lock bar 49) of the lock mechanism receiving part 44 on the rear frame part 28b side, and the holder pipe 34 and the base bracket A protrusion 51 whose upper portion protrudes to prevent the lock from coming off is fixed in the gap between the lock and the lock 46. In addition, holes 4 made on both sides of the base bracket 46
6a through the shaft rod 52 and the E-ring 53 into the groove 52a.
By fitting it in, it is prevented from coming off. The lock bracket 47 has a U-shaped claw-shaped frame 54 whose upper part is open and whose rear part is bent downward into a substantially arc shape, and has elongated holes 55 in the vertical direction.
The frame 55 of the lock bracket 47 is made by welding the U-shaped frame 55 with the front part of the frame 55.
The lock bracket 47 can be moved up and down by disposing it outside the base bracket 46 and passing the shaft rod 52 through it. Furthermore, a recess 47a is formed at the upper front end of the lock bracket 47 so as to come into contact with the protrusion 51 (see FIG. 6). Therefore, in the position where the lock bracket 47 is pulled upward, the lock bracket 47 rotates in the front-back direction by the thickness of the protrusion 51 in the front-back direction. Further, a hole 54a is provided in the front side surface of the claw-like frame 54.
is formed, and the shaft 56 of the handle 48 is inserted therethrough. The cotter pin 57 is inserted into the shaft hole 56a to prevent it from coming off.

As shown in FIGS. 7 and 8, the lock mechanism receiving portion 44 is located at the center of the member pipe 38, and is a U-shaped bracket 58 with a round lock bar 49 interposed therein.
is fixed via a pedestal 59. The lock bar 49 is covered with a resin collar 60, which includes a hole 49a made on the surface of the lock bar 49 and an inner claw 60a inside the resin collar 60.
This prevents slippage. The lock bar 49 is fixed by tightening bolts 61 from long holes 58a formed in both rising parts of the U-shaped bracket 58 to threaded holes 49b provided at the left and right ends of the lock bar 49. The position is adjusted by the elongated hole 58a so as to align with the curved surface of.

Next, the angle changing mechanism 30 of the steering shaft 20 will be explained. In the embodiment, a stepped type (fine adjustment possible) using gear meshing is used, and as shown in FIG. A gear-shaped meshing part 63 is formed as the axis,
The gears are meshed in accordance with the set angle of the steering shaft 20 and are tightened and fixed by an adjustment clamp 64. Note that other mechanisms may be used, and the one shown in FIG. 10 is a stepped type (fine adjustment possible) with a clamp bolt passing through, and the lower end of the steering shaft 20 is shaped like a U-shape to adjust the steering. A head shaft 62 is fixed with a connecting shaft 65 and an adjustment clamp 62. Further, the one shown in FIG. 11 is a clamp type stepless type, in which a cylindrical gear part 66 is provided at the lower end of the steering shaft 20, and a clamp receiver 67 of the steering head shaft 62 that receives the gear part 66 and a gear part are connected to each other. A clamp lid 68 covering the portion 66 is held down at an arbitrary angle and the adjustment clamp 62 is tightened.

Next, the operation of the coupling mechanism of the present invention will be explained. In the connected state, the lock bracket 47 falls downward along the elongated hole 55a due to its own weight, and the protrusion 51 and the recess 47a
are in contact and fixed. Groove 36a of connecting bar 36
The notch 45a of the holder bracket 45 is engaged with the lock bar 49, and the lock bar 49 is pressed against the bracket 50 by a force that tends to rotate around the connecting bar 36. In this state, even if a force is applied to the lock bar 49 to rotate it in the right direction (direction in which it comes off), the lock bracket 47 eliminates play in the rotation direction by the protrusion 51, so that the lock bar 49 is rotated against the curved surface. It doesn't move even if you press . Furthermore, the angle at which the trajectory of the rear frame portion 28b rotating around the connecting bar 36 intersects with the trajectory of the lock bracket 47 rotating around the shaft rod 52 forms an acute angle, and the lock bar 49 connects to the claw-like frame 52. The angle of the curved surface is set so that when you press the curved surface, the force is applied in the direction of being pulled in, not in the direction of going up (away).

When disassembling the vehicle body frame 28, first,
Remove the seat 25 and battery 24. Next, lift the handle 48. At this time, the lock bracket 47
is lifted upward by the length of the elongated hole 55a and released from the protrusion 51, making it freely rotatable. As shown in FIG. 4, the lock bracket 47 is tilted so that the lock bar 49 can be easily removed due to the positional relationship of each connecting portion, so that the frontage is wide open. Furthermore, if you lift the handle 48,
5, the connecting bar 36 of the main frame part 28a comes off from the notch part 45a and the rear frame part 2
8b and is completely separated. On the other hand, the rear frame portion 28
b is arranged so that the rear part is heavier than the rear wheel 26, and until the connection bar 36 is released, the balance of its own center of gravity exerts a force that tends to cause it to fall backward, and the main frame part 2
8a and rotates upward (in the direction of removal). When the connecting bar 36 comes off from the notch 45a, the rear frame part 28b falls backward, but it hits the fall prevention bar 29 and stops with the front surface slightly tilted upward. Note that when the rear frame portion 28b is tilted rearward, it assists in lifting the main frame portion 28a, allowing it to be disassembled with less force. Further, since the connecting structure itself does not take up much space and does not particularly affect the weight, the divided parts can be loaded onto a passenger car or the like and transported thereafter.

Next, the case of assembling the vehicle body frame 28 will be explained. The procedure is the reverse of disassembly, so I will summarize the main points. Main frame part 28a and rear frame part 2
8b are arranged facing each other, and the main frame part 28a is
Lift up the rear part by grasping the handle 48 of the connecting bar 36.
is fitted into the notch 45a of the holder bracket 45. Then, when the rear part of the vehicle is lowered, the positioning is achieved, the weight of the main frame part 28a rotates the rear frame part 28b, and the lock bar 49 is moved to the bracket 50.
comes into contact with. When the handle 48 is released at this point, the lock bracket 47 falls along the elongated hole 55a, and the curved surface of the claw-like frame 54 comes into contact with the lock bar 49 and stops. After that, the battery 24 and the seat 25 are attached to complete the assembly. Note that the seat 25 is located directly above the handle 48, so if you do not remove the seat 25, the handle 48
The lock cannot be unlocked while driving or riding.

[0019]

Effects of the Invention Since the present invention is constructed as described above, the main frame portion and the rear frame portion can be connected or connected by simply lifting only the rear part of the main frame portion into which the vehicle body frame is divided. It can be separated and does not require much force. When assembling, you can lock the position by simply aligning the connecting bar with the notch and lowering it, and when disassembling, you can release the lock and separate the frame in sequence, so alignment precision does not need to be high. Since it is supported by points, it is less likely to wobble while driving. Additionally, the body frame can be separated, making it possible to load it into a car.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of a body frame of an electric tricycle according to an embodiment of the present invention.

FIG. 2 is a side view showing the integrated structure of the vehicle body frame shown in FIG. 1;

FIG. 3 is a side view of a connecting portion that is a main part of the integrated structure of the vehicle body frame shown in FIG. 2;

FIG. 4 is a side view showing a separated state of the connecting portion shown in FIG. 3;

FIG. 5 is a developed view of a connecting portion on the main frame side shown in FIG. 1;

FIG. 6 is a perspective view of a main part of a connecting portion on the main frame side shown in FIG. 1;

7 is a perspective view of a connecting portion on the rear frame side shown in FIG. 1. FIG.

FIG. 8 is an exploded view of the main parts of the rear frame-side connecting portion shown in FIG. 1;

FIG. 9 is a perspective view of the angle adjuster of the handle portion shown in FIG. 12 of the embodiment.

FIG. 10 is a perspective view of the angle adjuster of the handle portion shown in FIG. 12 of the embodiment.

FIG. 11 is a perspective view of the angle adjuster of the handle portion shown in FIG. 12 of the embodiment.

FIG. 12 is a perspective view of the electric tricycle of the embodiment.

13 is a side view of the electric tricycle shown in FIG. 12. FIG.

14 is an explanatory diagram of divided parts of the electric tricycle shown in FIG. 12. FIG.

15 is a side view showing a separated state of the connecting portion of the body frame of the electric tricycle shown in FIG. 12. FIG.

FIG. 16 is a perspective view of a body frame of a conventional electric tricycle.

17 is an explanatory diagram of a joining process of the connecting portion of the vehicle body frame shown in FIG. 16. FIG.

[Explanation of symbols]

28 Body frame 28a Main frame part 28b Rear frame part 29 Fall prevention rod 31 Frame pipe 32 Cross member 34 Holder pipe 35 Lock mechanism 36 Connection bar 37 Side frame 38 Member pipe 44 Lock mechanism receiving part 45 Holder bracket 45a Notch part 48 Handle

Claims (1)

[Claims] Claim 1: A vehicle body frame having a main frame portion having a holder pipe erected at the center of a cross member supported by frame pipes on both sides, side frames disposed on both sides, and member pipes connected to the main frame portion, A locking mechanism that is separated into a rear frame part with a center of gravity at the rear and a fall prevention bar attached to the rear end, a connecting bar facing outward at the rear end of the frame pipe, and a handle on the upper part of the holder pipe. A holder bracket is provided at the end of the side frame having an upwardly opened notch that engages with the connecting bar, and a locking mechanism receiving portion for receiving the locking mechanism on the lower side is provided in the center of the member pipe. An electric tricycle characterized by the following features: