JPH0310102Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention relates to a locking device for a removable rearview mirror that is mounted on top of the existing rearview mirror mainly used in automobiles. be.

(Prior Art) There are several types of locking devices in conventional removable rearview mirrors, and three types of structures of the prior art known to the applicant will be described below.

(1) The first example is shown in Figs. 1 and 2, in which a support frame 2 of a rearview mirror body 1 has a pair of vertical guide grooves 3 on the left and right sides, each of which has an L that can slide freely in the vertical direction. An L-shaped lock plate 4 is fitted, and a tension spring 5 is suspended between the L-shaped lock plate 4 and the support frame 2, and the lock plate 4 is moved downward against the tension spring 5. , by releasing the pressure,
It is designed to act as an upward elastic force.

(2) The second example is shown in Fig. 3, in which the L-shaped lock plate 4 is fitted with the same support mechanism as in the first example, and the left and right lock plates 4 are made by punching out a single plate. The left and right ends of a coiled spring 7 supported by a support shaft 6 protruding from the center thereof are attached to a pair of left and right hooks 2a protruding from the support frame 2 side. The plate 4 is suspended and supported in the orthogonal direction so that the plate 4 is constantly urged upward.

(3) The third example is shown in FIG. 4, in which the L-shaped lock plate 4 is fitted with the same support mechanism as in the first and second examples, and the lock plate 4 is fitted between the pair of left and right lock plates 4. Similarly, a pair of left and right locker arms 8 in the shape of a diagonal are given an upward rotational force by a small coiled spring 9 provided in the center, and the lock plate 4 resists the coiled spring 7 until it reaches its lowest position. In the lowered position,
In order to maintain this position, the outer claw portion 10 of the rocker arm 8 is engaged with and fixed to the V-shaped notch 12 of the lock plate 4, and the release button 13 provided at the center of the lower edge of the rearview mirror body 1 is pushed up. Accordingly, the inner claw portion 11 of the rocker arm 8
is pushed up, the outer claw portion 10 is released, and upward elasticity is applied by the coiled spring 7.

(Problems to be solved by the invention) In the above-mentioned conventional technology, the first and second examples are mechanisms in which the L-shaped lock plate 4 cannot be stopped at the lowest position, and the third example is a mechanism in which it is stopped at the same position. It is characterized by being a mechanism. In the present invention, the mechanism for locking the L-shaped lock plate 4 at the lowest position does not require the use of the small coiled spring 8 or the diagonal rocker arm 8, and the same effect cannot be obtained with a simpler mechanism. This is a technical problem to be solved.

(Means for Solving the Problems) The present invention solves the above problems by providing the following technical means.

That is, a pair of left and right vertical guide grooves 3 are integrally formed on the support frame 2 of the rearview mirror body 1.
The front side was formed to be open up to about two-thirds from the top in the height direction, and the extension guide part 3a of the guide groove 3 was formed on the back side to open the back side for about the remaining one-third. The L-shaped lock plate 4, which is formed with a wall plate part 16 and fitted into the guide groove 3 so as to be slidable in the vertical direction, has a hook cut and raised at the upper center end when viewed from the front to be pulled up and driven by a coiled spring 7 or the like. A cut-and-raised protrusion 15 is integrally formed on the lower central end of the wall plate portion 14, and a protrusion 15 is integrally formed at the center of the back surface of the upper end of the wall plate portion 16 so as to fit into the guide groove 3. A groove 17 is formed deep enough to accommodate the raised protrusion 15 of the L-shaped lock plate 4, and the groove 17 tapers to become gradually shallower toward the lower end of the wall plate 16. A stepped portion 20 is formed on the surface 18 and at the lowest end thereof.
In addition, the cut-out protrusion 15 of the L-shaped lock plate 4
It is characterized in that it is configured so that the two can engage with each other.

(Example) In the support frame 2 of the rearview mirror body 1, a pair of left and right vertical guide grooves 3 integrally formed in advance extend from the front up to about two-thirds from the top in the height direction. The remaining one-third is formed by an extension guide groove 3 of the guide groove 3 on the back surface to release the back surface.
A wall plate portion 16 having a shape a is formed.

The L-shaped lock plate 4, which is fitted into the guide groove 3 so as to be slidable in the vertical direction, has a cut-and-raised hook portion 14 at the upper center end when viewed from the front, and a cut-and-raised protrusion 15 at the lower center end. It is integrally formed with a protrusion. At the center of the back surface of the upper end of the wall plate portion 16, a groove 17 is carved with a depth sufficient to accommodate the raised protrusion 15 of the L-shaped lock plate 4 when it is fitted into the guide groove 3. The groove 17 is formed by a tapered surface 18 that gradually becomes shallower toward the lower end of the wall plate portion 16.
A stepped portion 20 is formed at the lowermost end.

Reference numeral 7 denotes a coiled spring 7 fitted to a support shaft 6 projecting from the center of the support frame 2. The outer end of the coiled spring 7 is hung on the cut-and-raised hook portion 14 to form an L-shaped lock plate. 4 is always urged upward.

The feature of the structure of this invention is that the L-shaped lock plate 4
With the downward movement of the guide groove 3a, the raised protrusion 15 is aligned with the tapered surface 18 of the dug groove 17 further carved in the guide groove 3a, and is engaged with the lowermost end by the stepped part 20. Therefore, it is possible to lock the posture, and the gist of the present invention is that even if the coiled spring 7 that pulls up and drives the L-shaped lock plate 4 is used with other driving means, such as a linear tension spring, It doesn't change anything.

(Function) The present invention has the above structure, and when the L-shaped lock plate 4 shown in the solid line state in FIG. 5 is pulled down against the elasticity of the coiled spring 7, the upper part of the plate is The lower part of the plate is regulated by the guide groove 3 and moves downward vertically, but the lower part of the plate is regulated by the tapered surface 18 of the dug groove 17 in the extended guide groove 3a by the raised protrusion 15 provided on itself. As it descends, the tip 15a of the cut-and-raised protrusion 15 reaches the step 20, which is the lowest end of the tapered surface 18, as shown by the chain line in FIG. Once engaged, it will lock even if you release the pulling force in that position.

In this state, the lower end of the L-shaped lock plate 4 is pushed slightly rearward to release the raised protrusion 15 that engages with the stepped portion 20, and the action of the coiled spring 7 causes Immediately return to the original position.

(Effects) The locking device in the removable rearview mirror of the present invention has a pair of left and right vertical guide grooves 3 integrally molded on the support frame 2 of the rearview mirror body 1.
A wall plate with an open front surface up to about two-thirds from the top in the height direction, and an extension guide groove 3a of the guide groove 3 formed on the back surface of the remaining one-third to open the back surface. The L-shaped lock plate 4, which is fitted into the guide groove 3 so as to be slidable in the vertical direction, has a hook portion 14 cut and bent at the upper center end portion when viewed from the front to be pulled up and driven by a coiled spring 7 or the like. A cut-and-raised protrusion 15 is integrally formed at the lower center end portion of the wall plate portion 16, and a raised portion 15 is formed at the center of the back surface of the upper end portion of the wall plate portion 16 when the wall plate portion 16 is fitted into the guide groove 3. A groove 17 is carved deep enough to accommodate the raised protrusion 15 of the L-shaped lock plate 4.
6 is formed in a tapered surface 18 that gradually becomes a shallow groove toward the lower end thereof, and the raised protrusion 15 of the L-shaped lock plate 4 is configured to engage with the stepped portion 20 at the lowermost end thereof. Since it is possible to lock the L-shaped lock plate 4 when it is lowered to the lowest position, when fixing the cover to an existing rearview mirror from above, after positioning, the taper The simple structure and operation of slightly pushing the raised protrusion 15 engaged with the stepped portion 20 of the surface 18 to the rear can securely fix the small coiled spring 9, the Rotsuker arm 8, and the like. Since it is possible to eliminate complicated structures such as the unraveling button mechanism, it is not only possible to manufacture the product with fewer parts and lower manufacturing costs, but also because there are fewer parts, there is no need to worry about malfunctions in the operating system. This is a device with excellent practical effects.

[Brief explanation of the drawing]

1 to 4 show the conventional technology,
1 and 2 are a front view of the first example and a sectional view taken along the line A-A in the same figure, FIG. 3 is a partially cutaway front view of the second example, and FIG. 4 is a front view of the third example, The present invention is shown in Figures 5 and 6, and Figure 5 shows the support frame 2 of the rearview mirror body 1 with the mirror removed.
FIG. 6 is an enlarged sectional view taken along the line B-B. Code list, 1...Room mirror body, 2...Support frame, 2a...Latching part, 3...Vertical guide groove,
3a...Extension guide groove, 4...L-shaped lock plate, 5...Tension spring, 6...Spin shaft, 7...Wound spring, 8...Rocker arm, 9...Small coiled spring, 10...Outside claw Part, 11...Inner claw part, 12
...V-shaped notch, 13...Release button, 14...
...Cut-and-raised hook part, 15...Cut-and-raised protrusion, 15a
... Tip part, 16 ... Wall plate part, 17 ... Digging groove,
18...Tapered surface, 19...Lowermost end, 20...
...Danbe.

Claims (1)

[Scope of utility model registration request] A pair of left and right vertical guide grooves 3 integrally molded on the support frame 2 of the rearview mirror body 1 are formed with the front side open up to about two-thirds from the top in the height direction, and the remaining three In order to release the back surface, a wall plate part 16 is formed on the back surface with an extension guide groove 3a of the guide groove 3, and an L-shaped lock plate 4 is fitted into the guide groove 3 so as to be slidable in the vertical direction. for,
A cut-and-raised hook portion 14 is integrally formed at the upper center end portion of the wall board when viewed from the front, and a cut-and-raised protrusion portion 15 is integrally formed at the lower center end portion of the wall plate in order to be pulled up and driven by the coiled spring 7 or the like. At the center of the back of the upper end of section 16,
A groove 17 is formed deep enough to accommodate the raised protrusion 15 of the L-shaped lock plate 4 when fitted into the guide groove 3. Tapered surface 18 with gradually shallower grooves toward
A locking device for a removable room mirror, characterized in that the cut-and-raised protrusion 15 of the L-shaped lock plate 4 engages with a stepped portion 20 at the lowermost end of the locking device.