CN212209302U

CN212209302U - Dynamic cam trigger device of toy car

Info

Publication number: CN212209302U
Application number: CN202021196082.9U
Authority: CN
Inventors: 王芸
Original assignee: Hangzhou Huatao Plastic Co ltd
Current assignee: Hangzhou Huatao Plastic Co ltd
Priority date: 2020-06-24
Filing date: 2020-06-24
Publication date: 2020-12-22
Anticipated expiration: 2030-06-24

Abstract

The utility model relates to a toy car developments cam trigger device, in order to solve the light of toy car among the prior art, the awkward problem of music switch, provided a technical scheme and be: a dynamic cam trigger device of a toy car comprises a wheel shaft, a cam, a circuit board, a screw, a spring and a contact switch; the cam is fixed on the wheel shaft; the screw is fixed on the circuit board; the contact switch comprises a telescopic hollow cylindrical structure and a contact piece fixed at the bottom of the hollow cylindrical structure; the upper end of the hollow cylindrical structure is fixed on the circuit board; the lower end of the screw is positioned in the hollow cylindrical structure; the contact piece is matched with the screw; the spring is sleeved on the hollow cylindrical structure; one side of the cam is provided with a contact protrusion for pushing the contact piece. The utility model discloses the outward appearance is clean and tidy, and convenient operation does not need manual trigger switch.

Description

Dynamic cam trigger device of toy car

Technical Field

The utility model relates to a trigger device, concretely relates to toy car developments cam trigger device.

Background

Toy car on the market at present is for the reinforcing interest, often along with light and music effect when starting, but these light and music are ordinary button type on-off control generally, need the manual work to go to open or close, just can touch signals such as pronunciation music and light, and it is more troublesome to design one like this manual control operation, and two sets up a bellied button in the toy car outward appearance, and pleasing to the eye degree is relatively poor, and fragile.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art, and provides a toy car dynamic cam trigger device which has reasonable structural design, simple appearance and convenient operation.

The utility model provides a technical scheme that above-mentioned problem adopted is: the dynamic cam trigger device of the toy car comprises a wheel shaft, a cam, a circuit board, a screw, a spring and a contact switch; the cam is fixed on the wheel shaft; the screw is fixed on the circuit board; the contact switch comprises a telescopic hollow cylindrical structure and a contact piece fixed at the bottom of the hollow cylindrical structure; the upper end of the hollow cylindrical structure is fixed on the circuit board; the lower end of the screw is positioned in the hollow cylindrical structure; the contact piece is matched with the screw; the spring is sleeved on the hollow cylindrical structure; one side of the cam is provided with a contact protrusion for pushing the contact piece.

Preferably, in the utility model, a spline is arranged at the joint of the wheel shaft and the cam; the cam is fixed on the wheel shaft through spline clamping.

Preferably, the cam of the present invention is provided with a connecting hole for connecting with the wheel shaft.

Preferably, in the present invention, the inner wall of the connecting hole is provided with a concave pattern matching with the spline.

Preferably, the utility model discloses in still be provided with the gasket between screw and the circuit board.

Preferably, the tire is fixed at both ends of the wheel shaft.

Compared with the prior art, the utility model, have following advantage and effect: the utility model has the advantages of neater appearance, no external button switch, higher aesthetic degree and difficult damage; the utility model has convenient operation, does not need to trigger the switch manually, and utilizes the contact bulge part on the cam to push the contact piece at the bottom of the contact switch, so that the contact piece is contacted with the screw, namely, the contact switch is opened and closed once when the tyre rotates for one circle, thereby the light and the music of the toy car have the flickering effect, and the interest and the playability of the toy car are enhanced; the structure of the screw and the contact switch in the utility model is simple, and the screw is used to conduct the circuit, thus effectively reducing the cost and improving the economic benefit; the utility model discloses the design of epaxial spline can prevent effectively that the cam from sliding, increases product life.

Drawings

Fig. 1 is a schematic structural diagram of a dynamic cam trigger device (when a switch is triggered) of a toy vehicle according to an embodiment of the present invention.

Figure 2 is a schematic diagram of a dynamic cam activation device (when the switch is not activated) for a toy vehicle according to an embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a cam in an embodiment of the present invention.

In the figure: the wheel axle 1, the cam 2, the circuit board 3, the screw 4, the spring 6, the contact switch 7, the connecting hole 21, the contact protrusion 22, the hollow cylindrical structure 71 and the contact piece 72.

Detailed Description

The present invention will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not intended to limit the present invention.

Examples are given.

Referring to fig. 1 to 3, the dynamic cam trigger device of the toy vehicle in the present embodiment includes an axle 1, a cam 2, a circuit board 3, a screw 4, a spring 6, and a contact switch 7; the cam 2 is fixed on the wheel shaft 1; the screw 4 is fixed on the circuit board 3; the contact switch 7 comprises a telescopic hollow cylindrical structure 71 and a contact piece 72 fixed at the bottom of the hollow cylindrical structure 71; the upper end of the hollow cylindrical structure 71 is fixed on the circuit board 3; the lower end of the screw 4 is located inside the hollow cylindrical structure 71; contact piece 72 cooperates with screw 4; the spring 6 is sleeved on the hollow cylindrical structure 71; one side of the cam 2 is provided with a contact protrusion 22 for pushing the contact piece 72.

In the embodiment, a spline is arranged at the joint of the wheel shaft 1 and the cam 2; the cam 2 is fixed on the wheel shaft 1 through spline clamping; the cam 2 is provided with a connecting hole 21 for connecting with the wheel shaft 1; the inner wall of the connecting hole 21 is provided with concave grains matched with the spline; a gasket 5 is also arranged between the screw 4 and the circuit board 3; tires 8 are fixed to both ends of the wheel axle 1.

When the utility model is operated, the manual trigger switch is not needed, the wheel shaft 1 rotates and drives the cam 2 to rotate, the contact bulge 22 on the cam 2 upwards extrudes the contact piece 72 at the bottom of the contact switch 7 in the rotating process of the cam 2, the spring 6 on the contact switch 7 is compressed, the hollow cylindrical structure 71 of the contact switch 7 is also compressed, so that the contact piece 72 is contacted with the screw 4, and the contact switch 7 is opened; the wheel shaft 1 continues to rotate, the contact protrusion 22 on the cam 2 gradually moves away from the contact switch 7, the contact switch 7 is reset under the action of the spring 6, the contact piece 72 is separated from the screw 4, and the contact switch 7 is closed; that is, the opening and closing of the contact switch 7 is completed once per one rotation of the tire 8, which also causes the light and music of the toy car to have a flickering effect.

In addition, it should be noted that the specific embodiments described in the present specification may be different in the components, the shapes of the components, the names of the components, and the like, and the above description is only an example of the structure of the present invention. All the equivalent changes or simple changes made according to the structure, characteristics and principle of the utility model are included in the protection scope of the utility model. Various modifications, additions and substitutions may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.

Claims

1. A dynamic cam trigger device for a toy vehicle comprises a wheel shaft (1); the device is characterized by further comprising a cam (2), a circuit board (3), a screw (4), a spring (6) and a contact switch (7); the cam (2) is fixed on the wheel shaft (1); the screw (4) is fixed on the circuit board (3); the contact switch (7) comprises a telescopic hollow cylindrical structure (71) and a contact piece (72) fixed at the bottom of the hollow cylindrical structure (71); the upper end of the hollow cylindrical structure (71) is fixed on the circuit board (3); the lower end of the screw (4) is positioned in the hollow cylindrical structure (71); the contact piece (72) is matched with the screw (4); the spring (6) is sleeved on the hollow cylindrical structure (71); one side of the cam (2) is provided with a contact protrusion (22) for pushing the contact piece (72).

2. The toy vehicle dynamic cam trigger device of claim 1, wherein the connection of the axle (1) and the cam (2) is provided with splines; the cam (2) is clamped and fixed on the wheel shaft (1) through a spline.

3. The toy vehicle dynamic cam trigger mechanism of claim 2, wherein the cam (2) is provided with a coupling hole (21) for coupling with the axle (1).

4. The toy vehicle dynamic cam trigger device of claim 3, wherein the inner wall of the connecting hole (21) is provided with a concave pattern matching with the spline.

5. The toy vehicle dynamic cam trigger mechanism of claim 1, wherein a spacer (5) is further provided between the screw (4) and the circuit board (3).

6. The toy vehicle dynamic cam trigger mechanism of claim 1, wherein tires (8) are fixed to both ends of the axle (1).