TWM253333U - Framework of an electric wheelchair - Google Patents

Description

M253333 V. Creation Instructions (1) [Technical Field] This creation relates to an electric wheelchair, especially a creation aimed at improving the frame of an electric wheelchair. [Prior art]

As electric wheelchairs (electric scooters) are mainly used to provide mobility for middle-aged, elderly people and people with reduced mobility, and to assist them in simple tasks in daily life, and because of the rapid growth of the elderly population worldwide, The demand for electric wheelchairs has increased, but how to develop an electric vehicle that is difficult to turn over during cornering has become one of the most difficult problems for users and manufacturers to overcome, and it is also the motivation of the creators of this case. .

As shown in the first figure, the electric wheelchair (10) is mainly composed of a frame body (11), a transmission device (1 2) below the frame body (1 1), and a seat body (1 1) above the frame body (1 1). 1 3), and because the frame body (1 1) is made of most rods fixed to each other, and cannot make relative movements, therefore, when the occupant rides on the seat body (1 3), its The center of gravity cannot be changed. Once the electric wheelchair (1 0) travels too fast and performs cornering at the same time, the center of gravity that is too high above the ground will inevitably cause the electric wheelchair (1 0) and the passenger to overturn the ground. Those who do not meet the principle of practicality; therefore, in view of this serious flaw, in the pursuit of ideals, practicality and progress, we are sincerely striving for the goal of improvement. In view of this, the creator of this case has carefully considered and accumulated many years of experience in the sales and research and development of various electric wheelchairs and their components. After several trials and trials, they have finally developed an electric wheelchair frame Improvement.

M253333 V. Creation Instructions (2) [New content] The main purpose of this creation is to provide an improvement of the electric wheelchair frame, which is mainly equipped with a driving device on a relatively movable electric wheelchair frame, which can be controlled through control. The seat of the electric wheelchair is lowered, and it is closer to the ground, so that the center of gravity of the occupant can be reduced, and the purpose of the electric wheelchair is not easy to overturn when turning. The reason is that an electric wheelchair frame improvement provided according to the present invention includes: a front frame group having a seat fixed thereon, and one end of the front frame group being provided with a front wheel in contact with the ground; a rear frame group, which One end is pivotally arranged at the other end of the front frame group, and the other end of the rear frame group is provided with a rear wheel that is in contact with the ground. A driving device is connected horizontally between the front and rear frame groups and is controlled. The distance between the front wheels and the rear wheels of the front and rear frame groups can be changed, thereby reducing the center of gravity of the seat body and the occupant of the front frame group, so that the electric wheelchair is not easy to overturn when cornering. Regarding the techniques, means and other effects used in this creation to achieve the above-mentioned purpose, a preferred and feasible embodiment is described in detail with the drawings as follows [Implementation]

Page 6 M253333 V. Creation Instructions (3) First, please refer to the second and third pictures. The modified embodiment of the electric wheelchair frame provided by this creative embodiment is mainly composed of a front frame group (20) and a rear frame. The assembly (30) and a driving device (40) are assembled, wherein: the front frame group (20) has a first support rod (21) corresponding to each other, and the connection group is arranged on the second section The cross bar (2 2) between one bar (2 1) is composed, so that the first bar (2 1)-the end is a pivot end (2 1 1), and the other end is provided before contacting the ground A wheel (2 3), and a pivot joint (2 1 2) is formed at the lower end of one of the first support rods (2 1): and a seat is fixed at the upper ends of the two first support rods (2 1) (24) for a user to ride on; the rear frame group (30) has a second pole (31) corresponding to each other, and the connecting group is arranged between the two second poles (31) The second rod (3 1) is constituted by a cross bar (3 2) so that the end of the second rod (3 1) is a pivot end (3 1 1), and the pivot end (3 1 1) is connected to the front frame group (2 0). The pivotal ends (2 1 1) of the first rod (2 1) are pivotally connected to each other as a whole, and the The other end of the second support rod (3 1) is provided with a rear wheel (3 3) that is in contact with the ground. Similarly, a pivot joint (3 1 2) is formed at the lower end of one of the second support rods (3 1). The pivoting part (3 1 2) is formed on the same side as the pivoting part (2 1 2.) Of the first support rod (2 1); the driving device (40) is formed by a driving seat (4 1) And a screw (4 2), wherein the outer side of the driving seat (4 1) is pivotally arranged at the pivotal portion (2 1 1) of the first support rod (2 1) of the front frame group (2 0), and The screw (4 2) -end is pivotally connected to the pivoting portion (312) of the second support rod (31) of the rear frame group (30), and can be driven by the driving seat (41).

M253333 V. Creation instructions (4) Reciprocating movements inside the drive base (4 1). As for the use status and effect of the creation of this case, please cooperate with the second and fourth figures as shown in the figure. With the composition of the above components, when the user is riding on the seat (2 4) of the electric wheelchair and wants to perform high speed When traveling, the driving device (40) can be controlled and adjusted in advance, and the screw (42) is driven by the driving seat (41) to change the distance between the two, and the first and second rods ( 21) (3 1) Extrapolate to increase the angle formed between the first rod (2 1) and the second rod (3 1), and finally make the front wheel (2 3) and the rear wheel (3 3) The distance between the vehicle is increased, and the distance between the seat body (2 4) and the ground is reduced, as well as the user ’s center of gravity. Based on this, the electric wheelchair travels quickly and turns when the user ’s center of gravity is lowered. In order to avoid the electric wheelchair and the user from falling over, it can meet the actual needs. Similarly, the driving device (40) can also be mobilized to raise the seat (24) of the electric wheelchair to the original height, so it conforms to the practical principle. It is worth mentioning that, as shown in the fifth figure, the creation of this case can also be provided with an auxiliary wheel set (50) in the crossbar (32) group of the rear frame set (30). The auxiliary wheel set (5) 0) has a set of rods (5 1), an auxiliary wheel (5 2), and a power source (5 3) (the power source can be a motor or an engine), where the set of rods (5 1)-the end is welded Near the center of the crossbar (3 2) of the rear frame group (30), and the auxiliary wheel (5 2) is driven by the power source (5 3) and is set at the other end of the group of rods (5 1) Therefore, when the driving device (40) is mobilized to reduce the distance between the base body (24) and the ground, the auxiliary

M253333 V. Creation instructions (5) The wheels (5 2) can touch the ground to improve the stability of the electric wheelchair when it travels and turns. In summary, the structure disclosed in the creative embodiment of this case is mainly provided with a driving device before and after the relative movement can be performed. The driving device can be controlled to lower the seat of the electric wheelchair and closer to the ground. Allows the user to reduce the center of gravity when riding, and achieves the purpose of not turning over easily when the electric wheelchair turns, so the practicality of this creation is beyond doubt. In addition, the structure disclosed in this creative embodiment has not been seen in publications before application, nor It is used publicly. Therefore, the "newness" and "progressiveness" of this creation have been met. I have filed an application for a new patent in accordance with the law. I hope that the review will be granted and the patent granted as soon as possible.

Page 9 M253333 Brief description of the drawings Schematic part: The first drawing is a perspective view of a conventional electric wheelchair. The second picture is a schematic side view of this creation. The third picture is the top view of this creation. The fourth figure is a schematic diagram of the downgrading of this creation. The fifth figure is a schematic diagram of the auxiliary wheel set in this creation. Drawing number part: (10) Electric wheelchair (11) Frame body (12) Transmission device (13) Seat body (20) Front frame group (21) First rod (211) Pivot end (212) Pole connection (22) Cross bar (23) Front wheel (24) Seat body (30) Rear frame (31) Second support bar (311) Input end (312) Pivot (32) Cross bar (33) Rear wheel ( 40) Driving device (41) Driving seat (42) Screw (50) Auxiliary wheel set (51) Group lever (52) Auxiliary wheel (53) Power source

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Claims (1)

M253333 VI. Scope of patent application 1. An improvement of the electric wheelchair frame, comprising: a front frame group, a seat body is fixed on the front frame group, and one end of the front frame group is provided with a front wheel contacting the ground; a rear frame group, which One end is pivotally arranged at the other end of the front frame group, and the other end of the rear frame group is provided with a rear wheel in contact with the ground; a driving device is horizontally connected between the front and rear frame groups, and The control can change the distance between the front wheel and the rear wheel of the front and rear frame groups, thereby reducing the center of gravity of the seat body and the occupant of the front frame group, so that the electric wheelchair is not easy to overturn when cornering. 2. The improvement of the electric wheelchair frame according to item 1 of the scope of the patent application, wherein the front frame group is composed of cross bars connected between corresponding support bars. 3. The improvement of the electric wheelchair frame according to item 1 of the scope of the patent application, wherein the rear frame group is composed of cross bars connected between corresponding support bars. 4. According to the improvement of the electric wheelchair frame described in item 3 of the scope of the patent application, an auxiliary wheel set is provided on the crossbar group of the rear frame group. 5. The improvement of the electric wheelchair frame according to item 4 of the scope of the patent application, wherein the auxiliary wheel set has a set of rods, an auxiliary wheel and a power source, and one end of the set of rods is welded to the cross of the rear frame group. Lever, and the auxiliary gear train is driven by a power source. Page 11 M253333 γ, patent application scope 6. According to the electric wheelchair frame improvement described in item 5 of the patent application scope, where the power source is a motor. 7. The electric wheelchair frame improvement according to item 5 of the scope of patent application, wherein the power source is an engine. 8. The electric wheelchair frame improvement according to item 1 of the scope of the patent application, wherein the driving device is composed of a driving seat and a screw, the driving seat is pivotally connected to the lower end of the front frame group, and The driving screw is driven to move inside, and one end of the screw is pivotally connected to the lower end of the rear frame group. Page 12