CN103010277A - Automatic return device - Google Patents

Abstract

The invention discloses an automatic return device which comprises an upper cover and a bottom plate, wherein the upper cover is connected with the bottom plate through screws, a hole seat is arranged in the middle of the bottom plate, a rotatable hollow cylinder is arranged on the hole seat, the other end of the hollow cylinder extends out corresponding to a through hole of the upper cover, two symmetrical return sheets extend out of the outer surface of the hollow cylinder, a first screw is arranged at the end part of one return sheet, a second screw is arranged at the end part of the other return sheet, a third screw and a fourth screw are respectively arranged in the middle parts of two corresponding sides of the bottom plate, the first screw and the third screw are connected through a first spring, the third screw and the second screw are connected through a second spring, the second screw and the fourth screw are connected through a third spring, and the fourth screw and the first screw are connected through a fourth spring. The invention adopts four springs, and the hollow cylinder body enables the return sheet to return under the action of the elastic force and the pulling force of the springs, so that the vehicle can fixedly run along a straight line.

Description

an automatic return

technical field

The invention relates to an electric stroller for children, in particular to an automatic return device for an electric stroller for children.

Background technique

At present, there is no automatic return system for existing children's electric vehicles. After the car turns, it needs to be operated manually or by remote control. It is inconvenient for the operator to operate, and it is difficult to position the car to go straight. The children on the board bring the fright of shaking from side to side.

Contents of the invention

The object of the present invention is to provide an automatic position return device that can automatically return the car to its position after turning, aiming at the above-mentioned defects of the prior art.

In order to solve the above-mentioned deficiencies in the prior art, the technical solution to be solved by the present invention is: an automatic return device, including an upper cover and a bottom plate, the upper cover and the bottom plate are connected by screws, and a hole seat is provided in the middle of the bottom plate , the hole seat is provided with a rotatable hollow cylinder, the other end of the hollow cylinder extends out corresponding to the through hole of the upper cover, and the outer surface of the hollow cylinder extends outwards with two symmetrical return positions The end of one return piece is provided with a first screw, the end of the other return piece is provided with a second screw, and the middle of the two sides corresponding to the bottom plate is respectively provided with a third screw and a fourth screw. The first screw and the third screw are connected by a first spring, the third screw and the second screw are connected by a second spring, the second screw and the fourth screw are connected by a third spring, The fourth screw and the first screw are connected through a fourth spring, and the first spring, the second spring, the third spring and the fourth spring form a rectangle.

As an improvement of the automatic return device of the present invention, the end of the hollow cylinder corresponding to the through hole of the upper cover is provided with a pin hole connected with the direction rod. The pin hole is conducive to the connection between the direction rod and the hollow cylinder, and is convenient for disassembly and assembly when the return device is to be repaired or replaced.

As an improvement of the automatic return device of the present invention, the specifications of the first spring, the second spring, the third spring and the fourth spring are the same. The specifications of the first spring, the second spring, the third spring and the fourth spring are the same, so as to ensure that the strength of each stress direction of the return piece is the same, so that the force of the return piece is balanced.

Compared with the prior art, the present invention has the advantages that: the present invention uses the first spring, the second spring, the third spring and the fourth spring to connect the first screw, the second screw, the third screw and the fourth screw, and return The bit piece and the hollow cylinder are integrally structured, and the hollow cylinder can rotate on the base. When the steering rod controls the rotation of the hollow cylinder, the car is turned. When unclamping direction bar, because hollow cylinder is subjected to the effect of spring elastic force and pulling force, return sheet is returned, and car is fixedly driven along a straight line. The invention has the advantages of simple structure, easy operation, convenient assembly, safe use and the like.

Description of drawings

Fig. 1 is a schematic diagram of the three-dimensional structure of the present invention.

Fig. 2 is a schematic diagram of the internal structure of the present invention.

Detailed ways

The present invention will be further described below with reference to the accompanying drawings.

As shown in Figures 1 and 2, an automatic return device includes an upper cover 1 and a bottom plate 2, the upper cover 1 and the bottom plate 2 are connected by screws, and a hole seat 21 is provided in the middle of the bottom plate 2, and a hole seat 21 is provided on the hole seat 21. Rotatable hollow cylinder 22, the other end of the hollow cylinder 22 extends out corresponding to the through hole 3 of the upper cover 1, and the outer surface of the hollow cylinder 22 extends outwards two symmetrical return pieces 23, one of which returns The end portion of sheet 23 is provided with first screw 24, the end portion of another return sheet 23 is provided with second screw 25, and the middle part of both sides corresponding to base plate 2 is respectively provided with third screw 26, fourth screw 27, the first The screw 24 and the third screw 26 are connected by the first spring 28, the third screw 26 and the second screw 25 are connected by the second spring 29, the second screw 25 and the fourth screw 27 are connected by the third spring 30, and the fourth screw 27 It is connected with the first screw 24 through the fourth spring 31 , and the first spring 28 , the second spring 29 , the third spring 30 and the fourth spring 31 form a rectangle.

Wherein, one end of the hollow cylinder 22 protruding corresponding to the through hole 3 of the upper cover 1 is provided with a pin hole 4 connected with the direction bar. The pin hole 4 is conducive to the connection between the direction bar and the hollow cylinder 22, and is convenient for disassembly and assembly when the return device is to be maintained and replaced. When the car turns left, the hollow cylinder 22 is rotated, the first spring 28 and the third spring 30 are stretched, the second spring 29 and the fourth spring 31 are compressed, and when the hollow cylinder 22 is stopped, the hollow cylinder 22 Returned by the pulling force of the first spring 28 and the third spring 30 and the elastic force of the second spring 29 and the fourth spring 31; when the car turned right, the hollow cylinder 22 was rotated, the first spring 28 and the third spring 30 were Compression, the second spring 29 and the fourth spring 31 are stretched, when the hollow cylinder 22 stops rotating, the hollow cylinder 22 is subjected to the elastic force of the first spring 28 and the third spring 30 and the second spring 29 and the fourth spring 31 Pull back to position.

The specifications of the first spring 28 , the second spring 29 , the third spring 30 and the fourth spring 31 are the same. The specifications of the first spring 28 , the second spring 29 , the third spring 30 and the fourth spring 31 are the same, so as to ensure that the force intensity of each force direction of the return piece 23 is the same, so that the force of the return piece 23 is balanced.

The working principle of the present invention is: when the car turns left, rotate the hollow cylinder 22, the first spring 28 and the third spring 30 are stretched, the second spring 29 and the fourth spring 31 are compressed, when the hollow cylinder stops rotating At 22 o'clock, the hollow cylinder 22 is returned by the pulling force of the first spring 28 and the third spring 30 and the elastic force of the second spring 29 and the fourth spring 31; when the car turns right, the hollow cylinder 22 is rotated, and the first spring 28 and the third spring 30 are compressed, the second spring 29 and the fourth spring 31 are stretched, when the hollow cylinder 22 stops rotating, the hollow cylinder 22 is subjected to the elastic force of the first spring 28 and the third spring 30 and the second The tension of the spring 29 and the fourth spring 31 returns.

Claims (3)

1. self-return device, comprise loam cake and base plate, described loam cake and base plate are connected by screw, it is characterized in that, be provided with a hole seat at described base plate middle part, described hole seat is provided with a rotating hollow cylinder, the through hole of the corresponding loam cake of the other end of described hollow cylinder stretches out, the outside face of described hollow cylinder extends outward two symmetrical return sheets, the end of one of them return sheet is provided with the first screw, the end of another one return sheet is provided with the second screw, the corresponding middle part, both sides of described base plate is respectively equipped with the 3rd screw, the 4th screw, described the first screw be connected the 3rd screw and connect by the first spring, described the 3rd screw be connected the second screw and connect by the second spring, described the second screw be connected the 4th screw and connect by the 3rd spring, described the 4th screw be connected the first screw and connect described the first spring by the 4th spring, the second spring, the 3rd spring and the 4th spring surround a rectangle.

2. self-return device according to claim 1 is characterized in that, the end that the through hole of the corresponding loam cake of described hollow cylinder stretches out is provided with the pin hole that is connected with direction lever.

3. self-return device according to claim 1 is characterized in that, described the first spring, the second spring, the 3rd spring are identical with the specification of the 4th spring.

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