TW201507903A - Chassis and trolley using the same - Google Patents

Abstract

A chassis for trolley, includes a main body, two first all-round wheels, two second all-round wheels, two driving wheels, and a first buffering mechanism and two second buffering mechanism secured to the main body. The driving wheels drives the trolley move in a first direction when rotates. The first buffering is arranged on the main body in a direction perpendicular to the first direction. The two first all-round wheels are arranged at opposite ends of the first buffering mechanism. The second buffering mechanisms are arranged on the main body in a direction parallel to the first direction. The second all-round wheels are arranged on ends of the second buffering mechanisms away from the first buffering mechanism, and the driving wheels are arranged on ends of the second buffering mechanisms adjacent to the first buffering mechanism. A trolley using the chassis is also provided.

Description

Chassis and cart using the chassis

The present invention relates to a cart chassis, and more particularly to a cart chassis having a damper mechanism.

Most of the existing carts are designed as four-wheeled chassis. When the cart passes through uneven roads, there will be no wheeling, which affects the stability of the cart.

In view of the above, it is necessary to provide a chassis having a damper mechanism that can prevent the wheel from appearing when the cart passes through an uneven road surface.

A chassis includes a body, two first universal wheels, two second universal wheels, two drive wheels, and a first damper mechanism and two second damper mechanisms disposed on the body. The two drive wheels drive the cart to move in the first direction when rotated. The first damper mechanism is disposed on the body in a direction perpendicular to the first direction. Two first universal wheels are disposed at opposite ends of the first damper mechanism. The two second damper mechanisms are disposed on the body at intervals in a direction parallel to the first direction. The two second universal wheels are respectively disposed at one ends of the two second damper mechanisms away from the first damper mechanism, and the two driving wheels are respectively disposed at one ends of the two second damper mechanisms adjacent to the first damper mechanism.

The present invention also provides a cart having the above-described chassis.

The above-mentioned cart fixes the universal wheel and the driving wheel to the body through the vibration damping mechanism, so that the universal wheel and the driving wheel can maintain contact with the ground when the cart passes through the uneven road surface, thereby improving the stability of the cart. Sex.

1 is a partial perspective view of a cart with a chassis in accordance with a preferred embodiment of the present invention.

Figure 2 is a partial exploded view of the chassis of Figure 1.

Referring to FIG. 1 and FIG. 2 together, the chassis 100 for a cart of the preferred embodiment of the present invention adopts a six-wheel design. The chassis 100 includes a body 10, four universal wheels 20 (hereinafter referred to as two first universal wheels and two second universal wheels), two driving wheels 30 and three damping mechanisms 40 (hereinafter referred to as the first reduction) Vibrating mechanism and two second damping mechanisms). The two first universal wheels 20 are fixed to the body 10 by a first damper mechanism. One of the second universal wheel 20 and one of the drive wheels 30 is fixed to the body 10 by one of the second damper mechanisms. The other second universal wheel 20 and the other drive wheel 30 are fixed to the body 10 by another third damper mechanism. In addition, the chassis 100 further includes two drive devices 50 that are respectively fixed to the two second damper mechanisms. The two drive devices 50 respectively drive the two drive wheels 30 to rotate. The driving device 50 may be a stepping motor or a servo motor for driving the driving wheel 30 to rotate in a clockwise direction or a counterclockwise direction to drive the chassis 100 to move forward or backward in the first direction.

The body 10 is a substantially rectangular square plate. The body 10 includes a first end 101, a second end 102 opposite the first end 101, and two side ends 103. In the present embodiment, the first end portion 101 and the second end portion 102 are perpendicular to the first direction, and the side end 103 is parallel to the first direction. The body 10 is provided with a plurality of fixing holes (not shown) for fixing the damper mechanism 40 and the supporting mechanism (not shown).

The first damper mechanism 40 is disposed on the body 10 in a direction perpendicular to the first direction, and is adjacent to the first end portion 101. The first damper mechanism 40 includes two shaft seats 410, a rotating shaft 420 fixed to the shaft seat 410, a support member 430 rotatably disposed on the rotating shaft 420, and two buffer assemblies 440. Two axle seats 410 are spaced apart from the body 10 . The two axle seats 410 are provided with two opposite shaft holes 412. The two shaft holes 412 are disposed in a common first axis A. The first axis A is parallel to the side ends 103, and the distance from the first axis A to the two side ends 103 is equal. The opposite ends of the rotating shaft 420 are fixed in the shaft hole 412. A through hole 432 is defined in the middle of the support member 430 for rotatably receiving the rotating shaft 420. As such, the support member 430 is rotatable relative to the body 10 about the first axis A. The two buffer assemblies 440 are spaced apart from the body 10 and are symmetrical with respect to the first axis A. The distance between the two cushioning assemblies 440 is less than the length of the support 430. Each of the buffer assemblies 440 includes a hollow sleeve 442 and an elastic member 446 disposed on the body 10. A sleeve 442 is recessed from an end of the body 10 to form a receiving portion 444. The elastic member 446 is partially housed in the accommodating portion 444.

The structure of the two second damper mechanisms 40 is the same as that of the first damper mechanism 40. The second damper mechanism 40 differs from the first damper mechanism 40 only in that the arrangement of the two damper mechanisms 40 on the body 10 is different from that of the first damper mechanism 40. The two second damper mechanisms 40 are disposed on the body 10 in a direction parallel to the first direction and disposed symmetrically with respect to the first axis A. The rotating shaft 420 of the second damper mechanism 40 is perpendicular to the rotating shaft 420 of the first damper mechanism 40 such that the support 430 of the second damper mechanism 40 rotates relative to the body 10 about a second axis B that is perpendicular to the first axis A.

The chassis 100 also includes two brackets 60. The support members 430 to which the two brackets 60 are respectively fixed to the two damper mechanisms 40 are located at one end of the corresponding support member 430 from the second universal wheel 20. The drive wheel 30 and the corresponding drive unit 50 are secured to the respective support members 430 by brackets 60.

Referring again to FIG. 1, when assembled, first, the cushioning assembly 440 is secured to the body 10. Then, the corresponding support member 430 is rotationally coupled to the body 10 through the rotating shaft 420, while the support member 430 presses the elastic member 446 to cause the elastic member 446 to generate an elastic restoring force to elastically support the support member 430. The two first universal wheels 20 are respectively fixed to opposite ends of the support member 430 of the first damper mechanism 40, and the two second universal wheels 20 are respectively fixed to the support members 430 of the two damper mechanisms 40, respectively. Keep away from one end of the first universal wheel 20. Finally, the two driving wheels 30 and the corresponding driving device 50 are respectively fixed to the one end of the support member 430 of the two damper mechanisms 40 near the first universal wheel 20 by the bracket 60.

After assembly, since the universal wheel 20, the driving wheel 30 and the corresponding driving device 50 are all fixed to the body 10 by the damper mechanism 40, when the cart passes through the uneven road surface, both the universal wheel 20 and the driving wheel 30 are Keeping in contact with the ground improves the stability of the cart.

It is to be understood by those skilled in the art that the above embodiments are only intended to illustrate the invention, and are not intended to limit the invention, as long as it is within the spirit of the invention Changes and modifications are intended to fall within the scope of the invention.

100‧‧‧Chassis

10‧‧‧ Ontology

20‧‧‧ universal wheel

30‧‧‧Drive wheel

40‧‧‧damping mechanism

50‧‧‧ drive

60‧‧‧ bracket

101‧‧‧First end

102‧‧‧second end

103‧‧‧ side

410‧‧‧ shaft seat

412‧‧‧Axis hole

420‧‧‧ shaft

430‧‧‧Support

432‧‧‧through hole

440‧‧‧buffer components

442‧‧‧ sleeve

444‧‧‧ Housing Department

446‧‧‧Flexible parts

A‧‧‧first axis

B‧‧‧second axis

no

100‧‧‧Chassis

10‧‧‧ Ontology

20‧‧‧ universal wheel

30‧‧‧Drive wheel

40‧‧‧damping mechanism

50‧‧‧ drive

60‧‧‧ bracket

Claims (7)

A chassis comprising a body, two first universal wheels, two second universal wheels and two driving wheels, the two driving wheels driving the trolley to move in a first direction when rotating, the improvement is: The chassis further includes a first damper mechanism and two second damper mechanisms disposed on the body, the first damper mechanism being disposed on the body in a direction perpendicular to the first direction, the two first universal wheel sets And at the opposite ends of the first damper mechanism; the two second damper mechanisms are disposed on the body at intervals in a direction parallel to the first direction, and the two second universal wheels are respectively disposed on the two second dampers The mechanism is away from one end of the first damper mechanism, and the two driving wheels are respectively disposed at one ends of the two second damper mechanisms near the first damper mechanism. The chassis of claim 1, wherein each of the first damper mechanism and the second damper mechanism comprises a support member rotatably disposed on the body, and the support member of the first damper mechanism is opposite to the first axis The body rotates, the two second damper mechanisms are symmetrically distributed with respect to the first axis, and the support members of the two second damper mechanisms rotate relative to the body about a second axis that is perpendicular to the first axis. The chassis of claim 2, wherein each of the first damper mechanism and the second damper mechanism further comprises two buffer assemblies disposed on the body, the two buffer assemblies abutting the opposite sides of the support member Both ends. The chassis of claim 3, wherein each of the cushioning members comprises a sleeve disposed on the body and an elastic member received in the sleeve. The chassis of claim 2, wherein each of the first damper mechanism and the second damper mechanism further includes two pedestals fixed to the body and a rotating shaft of the fixed pedestal, the supporting member is rotatably coupled to Rotating shaft. The chassis of any one of claims 1 to 5, wherein the chassis further comprises two driving devices respectively disposed on the second damping mechanism for driving the driving wheel to rotate. A cart having the chassis of any one of claims 1 to 6.