JPS6040366Y2 - Buffer type door mirror - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a buffer type door mirror.

In particular, the present invention relates to a shock-absorbing door mirror in which a mirror housing that supports the mirror is pressed against a base by a spring, so that when a strong external impact force is applied, the mirror housing can tilt against the biasing force of the spring.

As shown in Fig. 1, in the conventional device of this kind, a threaded bar a is placed in a hole C in a base b, and a nut d is screwed into the bar a on the outside of the base b. At the same time, the other end g of the spring f, whose one end is engaged with the mirror housing, is engaged with the engaging portion e formed at the inner end of the bar a, and then the nut d is tightened to relatively The bar a is moved outward (in the direction of the arrow), and the spring f is tensioned and assembled so as to have a certain tensile force.

Therefore, this prior art has a problem in that it takes a lot of effort to assemble the spring f.

In addition, in this configuration, the bar a itself does not tilt, so when the mirror tilts, the spring f tilts with respect to the bar a as shown by the imaginary line in the figure. If excessive loads are applied to the parts, damage may occur.

As mentioned above, in order to solve the problem that when tilting, bar a no longer faces the direction of the tensile force and an unreasonable load is applied to bar a and its attachment part, the tilting lever that engages one end of the spring is pivoted to the base. This is known (West German Patent Application No. 2838465).

However, in this case, since the tilting lever is assembled to the base, when attaching the spring to the tilting lever, it is necessary to pull the spring with strong force while attaching it. The problem is that it is extremely time consuming.

The present invention improves the problems of the prior art as described above, and provides a shock-absorbing door mirror that is extremely easy to assemble, has good workability, and is tilted stably during shock-absorbing, so that no unreasonable load is applied to any part. The purpose is to

An example of implementing the present invention will be described below with reference to the drawings.

The shock-absorbing door mirror of the present invention, as shown in the side cross-sectional view in Fig. 2, has a mirror housing 2 with a built-in mirror 1 pressed onto a base 4 by a spring 3, and is not subject to strong external impact force. At times, the mirror housing 2 can be tilted against the biasing force of the spring 3.

In the figure, the tilted state is shown by imaginary lines.

In the present invention, one end 31 of the spring 3 is engaged with a joint 6 which is pivotally attached to the base 4 via a shaft 5.

The other end 32 of the spring 3 is engaged with the mirror housing 2.

In the illustrated example, the end portion 32 of the spring 3 is hooked onto the engagement piece 71 of the bracket 7 fixed to the mirror housing 2 for engagement.

The joint 6 of this invention has a jig hook part 6.
form 1.

For example, the joint 6 shown in FIGS. 2 and 3 is formed into a rectangular flat plate shape, as shown in the plan view in FIG. A small hole is bored at the end opposite to the one where the hook is located, and this hole is used as the hook part 61.

In the figure, 63 is a hole through which the shaft 5 is inserted, and a spring pin is previously press-fitted therein as the shaft 5, as shown in FIG.

As described above, the shaft 5 is assembled to the joint 6 in advance, and the jig hook part 61 is formed on the joint 6, so that the joint 6 can be attached to the opening 4 of the base 4 at the time of assembly.
One end 3 of the spring 3 is inserted into the mirror housing 2 from the back side through the spring 1 and is attached to the mirror housing 2.
1 to this joint 6, then hook the tip 81 of the jig 8 as shown in FIG. Assembly can be completed.

When looking at the base 4 of this example from the back side, the base 4 in Fig. 3 shows
As shown in FIG. 7, which is a view seen in the direction, a slit 42 is formed across the bottom surface of the base 4, and the slit 42 is continuous with the opening 41 described above, and both sides of the slit 42 are connected to each other. A recess 43 is formed in which the shaft 5 is fitted.

This recess 43 is surrounded by a wall 44, as shown in FIG. 8, which is a cross-sectional view of that portion.

Therefore, using the jig 8, pull the joint 6 through the relatively wide opening 41, pass it through the slit 42, and insert the shaft 5 into this recess 43.
It can be easily assembled by attaching the parts.

In reality, the shaft 5 may be positioned around point 2' in FIG. 8, and the jig 8 may be released at that location.

The assembled state is shown in FIG. 12.

In the illustrated example, a spring pin is used as the shaft 5, and by press-fitting it into the hole 63 of the joint 6, the shaft 5
and joint 6 are assembled in advance.

As shown in FIG. 9, this spring pin is made of metal, for example, and has a cylindrical shape with a groove 51 cut in the longitudinal direction, so that it can elastically contract by the amount of the groove 51.

When this is press-fitted into a rather narrow hole 63, it can be easily inserted due to its elastic contraction, and it is strongly pressed against the inside of the hole 63 and cannot be pulled out.

FIG. 10 also shows an example in which such a spring pin is used as the shaft 5 and is sub-assembled in advance.

In this example, the joint 6 is slightly narrowed at the side of the spring 3, and has a substantially trapezoidal planar shape.

As shown in the example in this figure, it is also possible to assemble the spring 3 together, attach one end of the spring 3 to the mirror housing 2 in this state, and then use the jig 8 to pull the joint 6. It is.

FIG. 11 shows another example of the joint 6.

In this case, the hook for pulling the jig is not a hole, but a cutout step 61'.

As a result of the above configuration, the present mirror can be assembled extremely easily, and work efficiency is greatly improved.

In addition, since the joint 6 can rotate around the axis 5, even when the mirror housing 2 is tilted, the joint 6 will rotate following the tilt, as shown by the imaginary line in FIG. However, it can always match the tension direction of the spring 3.

As a result, no excessive force is applied to the joint 6 or the part of the base 4 to which it is attached, and no damage occurs.

Therefore, an extremely stable buffering function can be achieved.

In the illustrated example, the position of the spring 3 is guided by a bracket 7 fixed to the mirror housing 2, so that the tension of the spring 3 is always approximately perpendicular to the support shaft 8, which is the center of tilting, and the spring 3 is This prevents it from coming into contact with other parts, such as the part 45 of the base 4 in FIG.

Due to the presence of the bracket 7, a stable buffering effect can be achieved even though the mirror is tilted by θ as shown in FIG.

In this example, the support shaft 8 is formed in the base 4, and is formed in the mirror housing 2, so that the seat 9 is fitted thereto to perform tilting.

As described above, the buffer type door mirror of the present invention supports the mirror by having one end of the spring engaged with a joint pivoted on the base, and the other end of the spring being engaged with the mirror housing. In a buffer-type door mirror in which a mirror housing is crimped to a base by a spring, a shaft is pre-assembled to the joint and a hook for hooking on a jig is formed, while the base has a shaft attached to the joint including the shaft. An opening that allows the passage of the shaft and a receiving part for the shaft are formed, and a jig is hooked to the hook part of the joint to which the spring is attached to stretch the spring, while the shaft of the joint is passed through the opening. Since it is configured to fit the receiving part, it is extremely easy to assemble and improves workability, and the tilting is stable during shock-absorbing, and no excessive load is applied to any part, causing damage. It has the effect that there is no

[Brief explanation of the drawing]

FIG. 1 shows a conventional example. Fig. 2 is a side sectional view of an example of the implementation of the present invention, Fig. 3 is a partially cutaway front view, Fig. 4 is a front view of the joint, Fig. 5 is also a side sectional view, and Fig. 6 is a jig. FIG. 7 is a view showing an example of the base as viewed from the direction ``■'' in FIG. 3, FIG. 8 is a sectional view taken along the line ``---'' in FIG. 7, and FIG. 9 is a perspective view of the shaft. FIG. 10 and FIG. 11 are diagrams each showing a modification of the joint. FIG. 12 is a view taken in the direction of the ■ arrow in FIG. 3. 1...Mirror, 2...Mirror housing, 3...Spring, 31...One end of the spring, 32...Other than the spring End, 4...Base, 5...Axis, 6...
...Joint, 61, 61'...Jig hook is part, 41...Opening, 42...
...Slit, 43... Shaft receiving recess.

Claims (1)

[Scope of utility model registration request] One end of the spring is engaged with a joint pivoted on the base, and the other end of the spring is engaged with the mirror housing, so that the mirror housing that supports the mirror is crimped to the base by the spring. In the shock-absorbing door mirror, a shaft is pre-assembled to the joint and forms a hook for hanging a jig, while the base has an opening for allowing passage of the joint including the shaft and a receiver for the shaft. A jig is hooked to the hook part of the joint to which the spring is attached, and when the spring is stretched, the axis of the joint is adapted to the receiving part of the base so that it hangs. A buffer type door mirror characterized by: