JPH0428634Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention is applicable to traveling toys such as cars, which can be played by switching between two running modes: mystery wheel running and idle wheel running. This invention relates to a locking device for switching between mystery wheel running and idle wheel running.

BACKGROUND ART Conventionally, there have been known running toys that can be played by switching between running on mystery wheels and running on idle wheels.

In the conventional switching device, firstly, an idle wheel installed in parallel with the mystery wheel is raised and lowered, and when the idle wheel protrudes downward from the mystery wheel, the idle wheel comes into contact with the running road, and the idle wheel is stopped. There are some wheels that can run on wheels, and when retracted above the mystery wheels, the mystery wheels come into contact with the running track, allowing mystery running. Second, the idling wheel is supported at a fixed position on the chassis, the mystery wheel is raised and lowered,
There is one that allows mystery running when it is protruded below the idle wheels.

Problems to be Solved by the Invention Regardless of the conventional switching device for raising and lowering an idle wheel or a mystery wheel, the structure is complicated and the cost is high.

This idea simplifies the structure, increases the robustness of the structure, and reduces manufacturing costs.

Means for Solving the Problems A machine frame of a traveling vehicle supported by idle wheels is supported to be slidable up and down, and is always urged downward by an expansion spring, and a mystery wheel is attached to the lower end of the machine frame. A mystery support shaft is installed in the middle, on which a driven contact gear that connects and separates from the drive pinion gear related to the motor is installed, and the locking ring on this support shaft and the expansion spring are locked and supported in the compressed and raised position. The locking pawl is pivoted on a support shaft disposed on the machine frame in a horizontal direction perpendicular to the mystery support shaft, and an extension part of the locking pawl that is spaced apart from the shaft support has an upper end on the upper surface of the traveling vehicle body. The lower end of the release connecting lever, which protrudes and is configured as an operation button, is connected in series, and by operating the locking pawl, the mystery spindle is operated to move the mystery wheel toward and away from the ground surface. A locking device for switching between mystery wheel running and idle wheel running in a traveling toy is characterized by the following.

Function Since this invented device is constructed as described above, by pressing down the release button protruding from the roof of the traveling vehicle body and directly rotating the engagement pawl, the action of the spring that expands downward at all times is activated. When the biased mystery spindle is disengaged from the locking ring, the mystery spindle slides downward due to the action of the expansion spring, and the mystery wheel supported on the mystery spindle becomes the front idle wheel. Instead, it is in contact with the running road surface. Then, the driven contact/separation gear on the mystery support shaft meshes with the drive pinion gear, rotates, and runs freely by the mystery wheels. Next, when the bottom plate of the mystery support frame is pushed up and the mystery support shaft is raised, the driven contact and separation gear and the drive pinion gear are disengaged, and the transmission rotation with the motor is released, while the locking ring is locked in the engagement pawl. However, in order to maintain the raised position of the mystery wheel via the mystery support shaft, the traveling vehicle body is supported by the front free-rolling wheel and the rear free-rolling wheel, allowing the vehicle to run freely.

Embodiment To explain this devised device with reference to a drawing showing an example of its implementation, the mystery support shaft 1 is vertically and freely rotatably supported by a bearing hole of a machine frame 3 disposed inside the front part of a traveling vehicle body 2. The lower half of the support shaft 1 protrudes downward from the machine frame 3, and a mystery support frame 4 is supported at the bottom so as to be rotatable around the axis of the support shaft 1.The mystery support frame 4 is supported perpendicularly to the mystery support shaft 1. pinion 7 on mystery wheel 6
and a crown gear 5 fixed to the lower end of the mystery spindle 1.
When the mystery wheels 8, 8 are meshed with each other and are attached to both ends of the mystery wheel 6, they rotate due to the rotation received by the mystery support shaft 1 when they come into contact with the road surface, and the rear idle wheels 9, 8 support the rear of the traveling vehicle body 2.
Balance with 9 and run the whole thing towards the front. When the forward motion is blocked by an obstacle, the support frame 4 supporting the mystery wheels 6, 6 rotates in the same direction as the mystery support shaft 1, and the mystery wheels 8, 8 rotate in the same direction as the mystery support shaft 1.
Turn and change the direction of travel and move forward in a direction that will not be blocked.

Mystery support frame 1 is the lower mystery support frame 4
An expansion spring 11 is wound between the fixed collar 10 which is articulated and supported at the upper end and the lower plate 3a of the machine frame 3, and the entire body is urged downward, and a driven contact/separation gear 12 is fixed to the middle of the bearing. The lower end surface of the lower plate 3a is connected to the lower plate 3a, and supports the lower plate 3a from sliding further downward. Due to the action of this expansion spring 11, as shown in FIG.
Bears the front weight of the

The mystery spindle 1 also has a locking ring 14 fixed to its upper part, and an L-shaped locking claw 1 whose tip is locked to its lower surface.
5 is pivotally supported by a support shaft 16 extending horizontally between brackets 3b1 and 3b1 vertically installed on the front end upper surface plate 3a of the machine frame 3, and is installed on the front side of the mystery support shaft 1. A tension spring 17 whose base end is hooked to the upper frame plate 3b is connected to the front end side, and the rear end of the locking pawl 15 is rotated toward the mystery spindle 1 side.
When the entire body is urged so as to be connected, for example, the bottom plate 4a of the mystery support frame 4 is pushed up, and the expansion spring 11 is compressed to raise the mystery support shaft 1, the locking ring 14
passes and the tip of the locking pawl 15 engages and connects with the lower side of the locking pawl 15, locking the mystery support shaft 1 in the raised position as shown in FIG. Front idle wheel 1 pivotally supported at the front of the vehicle body 2
8 and 18 are in contact with the running surface 13.

The release connecting rod 19 has a lower end pivotally attached to the front end of the base of the locking pawl 15 by a connecting shaft 20, an upper end fittingly protrudes upward from the upper surface opening 21 of the traveling vehicle body 2 at an appropriate height, and is provided on the release button 19a. There is.

The rotation transmission mechanism 23 from the motor 22 to the mystery support shaft 1 is provided as shown in FIG. It meshes with the large diameter gear 30 loosely supported on the second transmission rod 29 which is arranged in parallel with the pinion gear 28 at the upper end, and meshes with the pinion gear 31 integrated with this gear. A large-diameter gear 32 is provided on a third transmission shaft 33 that is also arranged in parallel, and this third
The pinion gear 34 on the transmission shaft 33 meshes with the large diameter gear 35 fixed on the second transmission shaft 29, and the second
When the transmission shaft 29 is rotated, the drive pinion gear 36 on this shaft is set to rotate, and the locking pawl 15 is removed from the locking ring 14 of the mystery support shaft 1, it slides downward under the action of the expansion spring 11. Then, the driven contact/separation gear 12 is moved downward, and the drive pinion gear 36 is moved downward.
The rotation of the motor 22 is transmitted to the mystery spindle 1.

The locking pawl 15 is provided in an L shape as shown in FIG.
37 opens laterally, and bearing holes 38, 38 into which the connecting shaft 20 with the release connecting rod 19 is inserted are also opened laterally at the front end of the base. The locking pawl 15 is first formed by pressing a convex flat plate 15a as shown in FIG.
It may also be formed into a U-shape. In addition, the tip of the locking claw 15 on the upper edge of one side is connected to the mystery spindle 1.
A hook 39 that hooks the tension spring 17 that biases the locking claw 17 toward the latching claw 17 may be protruded from the opposite lower edge, and a rotation stop 40 that limits the operational rotation angle of the locking claw 15 to a required value may be provided. It's good.

Effects of the invention This device has a locking ring on the mystery support shaft, which is supported by the machine frame of the traveling vehicle body so as to be able to slide freely up and down, and which is always urged downward by an expansion spring. The proximal end of the locking pawl that locks and supports the biasing spring in the compressed and raised position is pivoted on a support shaft that is disposed laterally orthogonally to the mystery support shaft, and the locking pawl is centered on the support shaft. Therefore, the locking pawl can be directly connected to the extended front end of the proximal end of the locking pawl, and its upper end can be protruded from the upper surface of the vehicle body to serve as an operation button. It is possible to release the engagement from the mystery support shaft by operating it in the following manner, and the operation configuration can be significantly simplified. In addition, since the upper tip of the locking pawl locks, it is a simple structure in which the tip is biased with a spring so that it connects to the mystery spindle after release, and then the mystery spindle is manually connected. When raised by pressure, the locking ring on the support shaft directly rotates and passes the locking pawl, and as it passes, the locking ring and the locking pawl immediately engage with each other. The vehicle is prevented from descending and is held in its raised position, making it possible to travel on idle wheels.

Therefore, it is possible to enjoy mystery travel in which the direction of travel can be automatically changed using batteries, and turning travel using idle wheels without using batteries, with a simple and low-cost configuration.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway side view showing the mystery wheel running state of this devised device, Fig. 2 is a partially cutaway side view showing the rotating wheel running state, and Fig. 3 is a perspective view of the main part of the device. 4 is a perspective view showing the rotation transmission mechanism of the mystery wheel, FIG. 5 is a perspective view of the locking pawl frame alone, and FIG. 6 is a developed plan view of the locking pawl frame. 1... Mystery support shaft, 2... Traveling vehicle body, 3...
... Machine frame, 4 ... Mystery support frame, 8 ... Mystery wheel, 9 ... Rear free wheel, 11 ... Expansion spring, 12 ... Driven contact/separation gear, 13 ... Road surface, 1
4... Locking ring, 15... Locking claw, 16... Support shaft,
17...Tension spring, 18...Front idle wheel, 19
...Release link, 19a...Release button, 20...Connection shaft, 22...Motor, 23...Rotation transmission mechanism,
36... Drive pinion gear.

Claims (1)

[Scope of utility model registration request] The machine frame 3 of the traveling vehicle body 2 supported by idle wheels 9 and 18 is supported by a bearing so as to be able to slide up and down, and is always urged downward by an expansion spring 11. In between is a drive pinion gear 36 associated with the motor 22.
A mystery support shaft 1 to which a driven contact/separation gear 12 is attached is attached, and a locking claw 15 is installed on the support shaft to lock and support the locking ring 14 and expansion spring 11 in the compressed and raised position. It is pivoted on a support shaft 16 disposed on the machine frame 3 in a horizontal direction perpendicular to the mystery support shaft 1, and has an upper end on the upper surface of the traveling vehicle body 2 at an extension part separated from the shaft support of the locking pawl 15. The lower end of the release link 19 protruding from the operation button 19a is connected in series, and the mystery spindle 1 is operated by operating the locking pawl 15 to release the mystery wheel 8.
A locking device for switching between mystery wheel running and idle wheel running in a traveling toy, characterized in that the wheels are moved closer to and away from the ground contact surface.