JPS5915723Y2 - rear endoscope - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement of the mirror mounting portion of a synthetic resin integrated rear end mirror used primarily in freight cars, passenger cars, etc.

Conventionally, there are various types of rearview mirrors used in automobiles such as freight cars and passenger cars, but there are synthetic resin rearview mirrors in which the rear plate supporting the mirror plate and the frame edge are integrally molded. A structure in which a mirror plate is fitted into the support body is widely used because it can be manufactured to have an elegant appearance.

In this type of rear endoscope, in order to attach the end plate to the support body, the peripheral end of the peripheral frame part 33 formed at an appropriate height around the back plate part 31, as shown in FIG. A locking edge 32 protrudes inward, and a plurality of tapered support protrusions 34 with rounded ends of a required height are protruded at appropriate intervals slightly inward from the inner peripheral edge of the back plate portion 31. For the support 30 having the same structure, the mirror plate 10', which is formed to have an outer diameter slightly smaller than the inner diameter of the peripheral frame 33 of the support 30, is heated and softened, for example, to soften the peripheral frame 33 of the support 30. 33, and the end plate 10' is fixed to the support body 30 by the tip of the support projection 34 and the locking edge 32.

With this structure, the mirror plate 10' is substantially supported by the tips of the support protrusions 34 in point contact at multiple locations, and is surrounded by the frame 33. However, during use, especially in the summer when the temperature is high, the outside temperature accumulates throughout the support, and as a result, the tapered support protrusion 34 easily softens and becomes longer. During this period, the protrusion deforms and the locking edge 32
The locked state of the end plate 10' by the support protrusion 34 is no longer maintained, and the end plate 10' becomes movable within the support 30. Therefore, when a large external force is applied, the end plate 10' is removed from the support 10. There are problems such as it falling off or being easily damaged.

The present invention solves such problems and proposes a rear endoscope made of a synthetic resin support that has a simple structure that allows the end plate to be fixed to the support reliably and in a stable state at all times. It is something.

That is, in the present invention, a back plate and a frame portion provided with a locking edge of a required height formed around the back plate are integrally formed of synthetic resin, and a back plate is placed at an inner position of the frame portion at an appropriate distance from the frame portion. A row of short pointed protrusions are provided on the inner surface of the back plate at appropriate intervals, and each of these protrusions is fitted with a rubber support piece with a flat top and a bottomed mounting hole in the center of the bottom. The rear endoscope is configured such that the end plate can be reliably locked between the top surfaces of the plurality of support pieces and the inside of the locking edge of the frame.

Next, one embodiment of the present invention will be described in detail with reference to the drawings.
As shown in FIGS. 3 to 3, a peripheral frame part 4 of an appropriate height is formed around the back plate part 3 having the required external dimensions, and a locking edge 5 is protruded inward from the peripheral edge of the peripheral frame part 4, and the back plate part 3 is A support body 2 having a structure in which a plurality of relatively short pointed protrusions 6 are protruded from a position slightly inside the inner peripheral edge of the portion 3 at appropriate intervals is integrally formed of a hard synthetic resin.

Each protrusion 6 of the support 2 is provided with a mounting hole 9 in the base 8 having approximately the same diameter as the diameter of its lower end, and the top has a diameter larger than the base and is flattened with rubber, soft synthetic resin, etc. The support pieces 7 made of a rubbery material are respectively fitted and mounted, and the frame portion 4 of the support body 2 is heated and softened to have an outer diameter slightly smaller than the inner diameter within the peripheral frame portion 4. Formed mirror plate 1
0, the rear endoscope 1 is configured such that the end plate 10 is held under pressure within the frame by the top surface of the support piece 7 and the locking edge 5 and fixed.

With this configuration, the rear endoscope 1 of the present invention has a second
As shown in the figure or FIG. The flat and appropriately thick top part has a cushioning property, and the cushioning property makes it possible to press the end plate 10 upward and hold the end plate 10 reliably and stably within the support body 2. It can be done.

Then, due to large impact force or distortion of the frame,
Even if the end plate 10 moves, the supporting piece 7 will not move as shown in FIG.
can be freely displaced by the free movement space between the protrusion 6 to be fitted and the inner surface of the mounting hole 9, and the contact friction between the end plate 10 and the top surface of the support piece 7 causes the support piece to move against the rubber material. By forming the mirror plate 10, it is possible to increase the impact force by absorbing and buffering the impact force by always integrally contacting and supporting and displacing the floating space.
This prevents loosening of the locking force between the support locking edge 5 and the support locking edge 5, thereby eliminating defects such as the head plate 10 coming off from the support 2 or being easily damaged. Since the length of the protrusion 6 to which the support piece 7 is attached is short, it does not easily soften and deform even under high temperature conditions, and mainly plays the role of stably supporting the support piece 7. There are no problems like in the case of.

As described above, according to the present invention, the support part of the end plate can be maintained in a stable state without difficulty against external forces, making the rear endoscope using a support body molded into an integral structure truly practical. It has many advantages such as simple structure and can be provided at low cost, and has great practical effects.

Incidentally, according to the spirit of the present invention, the present invention is not limited to the above embodiment, and the same effect can be obtained even if the top surface of the support piece is formed into a curved shape, and the shape of the end plate is oval. Alternatively, even if the support body has an arbitrary shape such as a circular shape, the support body and the end plate support portion attached thereto may be adjusted accordingly, and it goes without saying that these are included within the technical scope of the present invention.

[Brief explanation of drawings]

Fig. 1 is a vertical sectional view of the central part of an embodiment of the rear endoscope of the present invention, Fig. 2 is an enlarged view of the main part of Fig. 1, Fig. 3 is an overall front view with the end plate removed, and Fig. 4 is Fig. 5 is a longitudinal cross-sectional view of the main part of the conventional rear endoscope. Fig. 5 is a diagram showing the locked state of the end plate, Fig. 5 a is a partial sectional view in normal state, and Fig. 5 is a partial cross-sectional view with the end plate in a displaced state. It is a diagram. 1... Rear endoscope, 2... Support body, 3...
... Back plate part, 4 ... Frame part, 5 ...
Locking edge, 6... protrusion, 7... support piece,
8...Base, 9...Mounting hole, 10...
...Mirror plate.

Claims (1)

[Scope of utility model registration request] The back plate and a frame portion provided with a locking edge of a required height formed around the back plate are integrally formed of synthetic resin, and a plurality of protrusions for receiving and supporting the mirror plate are protruded at appropriate intervals on the inner side of the frame portion. Set up
In a rear endoscope in which the end plate is fitted and attached by the protrusion and the locking edge, short pointed protrusions are provided at appropriate intervals on the inner surface of the back plate along the frame at a position appropriately distant from the frame. A rubber support piece with a flat top surface and a bottomed mounting hole in the center of the lower part is fitted onto each of these protrusions, and the top surface of the plurality of support pieces and the frame are connected to each other. A rear endoscope configured to fit and lock an end plate on the inside of a locking edge.