JPH04874Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial field of application This invention relates to suspensions used in toys or model cars such as radio-controlled cars, and more specifically, to a suspension made of synthetic resin with a thin-walled hinge. This invention relates to a suspension characterized by supporting wheels.

BACKGROUND ART Conventionally, a suspension for a model automobile such as a toy or a radio-controlled car, particularly a double wishbone suspension, is constructed as illustrated in FIG. 4.

That is, the base ends of the upper arm a and the lower arm b are each rotatably attached to the vehicle body c by a sliding bearing d, and the other end is attached to the knuckle arm h of the axle g via a ball joint (sliding bearing) e.
and supports the wheel f. The midpoint of the lower arm b is elastically pushed downward by the coil damper unit j with an appropriate force.

Problems that the present invention aims to solve As mentioned above, the suspensions of conventional toys and model cars have a structure that uses a link mechanism similar to that of a real car, so they have a large number of parts and are difficult to manufacture and assemble. It's complicated and time-consuming. Furthermore, there were problems in that the weight was large and the manufacturing cost increased.

Moreover, there is a limit to the miniaturization of the sliding bearings d and e due to their structure, for example, 1/16, etc.
It was extremely difficult to use it as a suspension for toys and model cars with large scale scales such as 1/24.

On the other hand, suspensions with conventional structures adopt mechanisms that are significantly simplified from the perspective of a real car, so they cannot function as well as a real suspension. It is considered a problem due to dissatisfaction.

Means for Solving the Problems As a means for solving the problems of the prior art described above, the suspension for toys, model cars, etc. according to this invention is a preferred embodiment shown in FIGS. 1 to 3 of the drawings. As shown, in the suspension of toys, model cars, etc., arm units 1 and 2 made of synthetic resin are provided with thin hinges 1a, 2a or 14 or 24 at predetermined positions.
Alternatively, the arm unit 13 or 23 is attached and fixed to the vehicle body 3, and the wheel 4 is elastically supported by the arm unit.

Function: Due to the flexibility of the thin hinges 1a, 2a, 14, or 24 of the arm unit, this suspension operates with flexibility similar to that of an actual vehicle.

This thin hinge 1a, 2a or 14 or 24
In order to miniaturize the arm unit 1, 2, 13 or 23, it is only necessary to mold it into a relatively small size, and there is no problem at all. Therefore, even if the scale is small, for example, 1/24 or less,
It is easy to mold and assemble, and it is also easy to reduce the weight.

Furthermore, this suspension can be assembled extremely easily by simply attaching the arm unit to the vehicle body 3 in a single step.

Embodiment Next, an embodiment of the present invention shown in the drawings will be described.

First, FIG. 1 shows an embodiment of a double wishbone suspension corresponding to the conventional example explained in FIG. It is supported by connecting an upper arm unit 1 and a lower arm unit 2.

The upper arm unit 1 and the lower arm unit 2 are each made of synthetic resin such as polypropylene by injection molding, and each flexible arm portion 1b, 1c or 2b, 2c is approximately perpendicular to the axis of the axle 4a. They are integrally molded as a unit connected by thin hinges 1a or 2a with a thickness of about 0.4 mm formed by V-shaped grooves.

The lower arm 2 has a flat plate shape as a whole.

On the other hand, the upper arm unit 1 has a downward spacer portion 7 protruding from its center in order to secure the necessary spacing (height) to support the knuckle arm 5 in a substantially parallel arrangement with the lower arm unit 2. ing. In addition, the inner side flexible arm portion 1c
Support arms 8, which serve as reaction force receivers for the damper unit 6, are integrally formed at the lower position of the spacer portion 7 in such a manner that they protrude from both left and right sides of the spacer portion 7, respectively.

The upper arm unit 1 and the lower arm unit 2 are placed on a flat vehicle body 3 with their center portions overlapped with each other via the spacer portion 7, and the spacer unit 2 is inserted upward from the bottom of the vehicle body 3. Screw in the mounting bolts 9, 9, which are long enough to reach the part 7, and firmly tighten them together, and then fix the vehicle body 3.
The attachment to the arm unit and the assembly of both arm units 1 and 2 are performed in a single process.

The upper arm unit 1 and the lower arm unit 2 are each formed in a symmetrical shape with respect to the mounting position using the mounting bolt 9 as a center. In particular, the thin hinges 1a, 2a each have two flexible arm portions 1b, 1c on one side.
Alternatively, in order to form 2b and 2c, two are formed on each side.

The upper arm unit 1 and the lower arm unit 2 each have a distal end side flexible arm portion 1.
b, 2b to the bolts 10 provided vertically on the top and bottom of the knuckle arm 5, respectively, and the washers 11
The wheel 4 is supported by tightening and connecting the nut 12 via.

In the lower arm unit 2, a coil is installed approximately in the center of the flexible arm portion 2c formed between the two thin hinges 2a, 2a, and has one end fixed to the support arm 8 of the upper arm unit 1 to remove the reaction force. The other end of the damper unit 6 is in contact with it. Due to the resilient force of the coil damper lower unit 6, the lower arms 2b, 2c are elastically pushed downward with an appropriate force.

Therefore, in the case of the double wishbone suspension of this embodiment, the left side of FIG. 1 is the wheel 4.
As shown in the displacement state, the upper arm unit 1 and the lower arm unit 2 are subjected to a restraining force by the coil damper unit 6,
Flexible arms 1b, 1c connected by two thin hinges 1a, 1a, and two thin hinges 2a,
Based on the flexibility of the flexible arms 2b and 2c connected at 2a, the wheel 4 is supported while being flexibly deformed in a movement similar to a parallel link mechanism. Therefore, the suspension effect is comparable to that of the real thing.

Second Embodiment FIG. 2 shows an embodiment of the swing axle suspension.

In the case of this embodiment, the swing arm unit (lower arm unit) 13 is also made of synthetic resin, and is provided with a thin hinge 14 formed by a V-shaped groove perpendicular to the axis of the axle 4a. are connected, allowing for free vertical swing motion.

A block-shaped bearing part 15 is integrally molded at the tip of the swing arm 13', and the wheel 4 is attached to the axle 4.
a through the bearing part 15, and insert the washer 11 from the opposite side.
The wheels 4 are supported by being connected by tightening a nut 12 through them.

The upper arm unit 16 of this embodiment is also made of synthetic resin. However, the structure is such that the support arm 17, which serves as a reaction force receiver for the damper unit 6, is formed in a bilaterally symmetrical shape.

The upper arm unit 16 and the swing arm unit 13 are placed on the vehicle body 3 with their central parts overlapped, and the mounting bolts 9, 9 are screwed in from the bottom of the vehicle body 3, so that both units are common to each other. It is tightened and fixed. The other end of the coil damper unit 6, one end of which is supported by the support arm 17, is brought into contact with the approximate center of the swing arm 13, and the swing arm 13' is moved downward by an appropriate force from the coil damper unit 6. It is pressed elastically.

Therefore, the swing arm 13' receives the restraint force from the coil damper unit 6 while
The wheel 4 is supported while making a flexible swing motion based on the flexibility of the thin hinge 14.
This creates a suspension effect that is close to the real thing.

Although not shown in full in FIG. 2, the swing arm unit 13 and the upper arm unit 16 each have a mounting bolt 9.
It is formed in a symmetrical shape centering on the mounting position.

Third Embodiment FIGS. 3A and 3B show an embodiment of a trailing arm type suspension.

In this embodiment as well, the trailing arm unit (lower arm unit) 23 and the upper arm unit 26 are each integrally molded of synthetic resin. Then, both unit members 23 and 2
6 is a common mounting bolt 9 for the vehicle body 3;
It is attached and fixed together at 9.

The trailing arm unit 23 is attached to the axle 4a.
Thin hinge 2 with a V-shaped groove oriented parallel to the axis of
4 and thus articulated swivel arm portion 2
A bearing box 25 is provided at the tip of the wheel 3', and the bearing box 25 is connected to the axle 4 through a ball bearing.
a, and wheels 4 are supported.

The upper arm 26 attached to the vehicle body 3 as described above and the trailing arm unit 2
A coil damper unit 6 is installed between the flexible arm portion 23' of the flexible arm portion 2
3' is elastically pushed downward with a moderate force.

Therefore, the flexible arm portion 23' receives the restraining force of the coil damper unit 6 while supporting the thin hinge 2.
The flexibility of the four wheels provides a supple suspension effect.

27 in FIG. 3A is an operating gear device.

Effects of the present invention As described above in detail together with the embodiments, the suspension for toys, model cars, etc. according to this invention consists of two main parts: an upper arm unit and a lower arm unit made of synthetic resin. It has an extremely simplified configuration consisting of: Furthermore, the connection between these and the wheels 4, or the means for attaching them to the vehicle body 3, can be simply done by ordinary bolt tightening work, so manufacturing and assembly are extremely easy and costs can be reduced.

In addition, each arm unit is made of synthetic resin and is extremely easy to mold, making it suitable for mass production. In particular, the thin hinge has excellent moldability, so there is no problem in making the arm unit smaller and lighter. Therefore, it is easy to implement large scale scales such as 1/16 and 1/24, making it ideal as a suspension for toys and model cars.

Furthermore, this suspension has a thin hinge 1
Based on the flexibility of a or 2a, it moves flexibly, and you can expect excellent suspension effects similar to the real thing.

[Brief explanation of drawings]

Figures 1 and 2 are cross-sectional views that simply show the structure of the double wishbone suspension and swing axle suspension according to this invention from the front side, and Figures 3A and 3B are cross-sectional views of the structure of the double wishbone suspension and swing axle suspension according to this invention. FIG. 4 is a sectional view showing a conventional double wishbone suspension. 1a, 2a, 14, ... thin hinge, 1, 2,
13, 23...Arm unit, 3...Vehicle body, 4
...Wheels, 9...Mounting bolts.

Claims (1)

[Scope of Claim for Utility Model Registration] In the suspension of toys, model cars, etc., a synthetic resin arm unit with a thin-walled hinge provided at a predetermined position is attached and fixed to the vehicle body, and the wheels are elastically supported by the arm unit. Suspensions for toys, model cars, etc., which are characterized by: