JPH0636986U - Inner mirror dropout structure - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention is to fix the upper and lower bases with the ring-shaped leaf spring and the lock nut temporarily connected, and then fix the stay and the lock nut with the mounting screws, The provision of the inner mirror drop-out structure that enables the assembly workability to be simplified by fixing it to the mounting screws. According to the present invention, the ring-shaped leaf spring 8 and the lock nut 6 are temporarily held between the lower base 3 and the upper base 7, and the stay 4 is engaged with the lock nut 6 and The inner mirror is detached, which is characterized by being fixed with a mounting screw B.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a structure for removing a vehicle inner mirror.

[0002]

[Prior art]

 The inner mirror is attached so as to fall off during deceleration G at the time of a collision. In other words, the body may move due to inertia or the like to cause the mirror to come into contact with the head even when the seatbelt is worn, and at that time, the mirror is protected to buffer the shock and protect the body. It is configured to drop out automatically.

FIG. 5 is an explanatory view showing a conventional example, and FIG. 6 is an exploded perspective view showing the same. When attaching the mirror 50, the lower base 53 is fixed to the inside of the front shield 52 in advance, while the stay 56 having the pivot 55 for supporting the mirror body 54 and the stay 56 are detachably held. In order to secure the stay 56 and the upper base 57 to the protrusion 58a of the ring-shaped leaf spring 58, the head 59a of the lock bolt 59 is held, and then the lower base 53 and the upper base 57 are attached with a screw 60. Fixed by.

That is, the mirror 50 is attached to the upper base 57 in advance, and the lower base 53 already fixed to the front shield 52 is provided with a mounting screw 60 in the lower base 53 obliquely upward from the rear side of the mirror 50. It is fixed by being screwed into the screw hole 53a.

On the other hand, the conventional example shown in FIG. 7 employs a ring-shaped leaf spring 71 having a nut 70 in the center instead of the ring-shaped leaf spring and the lock bolt, and uses the ring-shaped leaf spring 71 in the stepped portion of the upper base 72. The ring-shaped leaf spring 71 is held, and the upper base 72 and the lower base (not shown) are fixed and integrated with the same mounting screw 73 as described above, and then the mounting screw 76 is attached from the through hole 75 provided in the stay 74. The stay 74 is inserted and fixed to the upper base 73.

When the head collides with the mirror, the mirror is pushed in the direction of the applied external force, whereby the stay is pulled in the direction opposite to the external force, and in the case of the first conventional example, the lock is applied. The head of the bolt 59 is pulled against the elasticity of the ring-shaped leaf spring 59, and this pulling force causes the projection of the ring-shaped leaf spring 58 to elastically deform, making it impossible to hold the head and the stay 56. It falls off from the upper base 57.

Further, in the case of the second conventional example, when the stay 74 is pulled in the same manner as described above, the ring-shaped leaf spring 71 is elastically deformed as shown in a and b of FIG. While sliding on, the ring-shaped leaf spring 71 is dropped from the upper base 72.

[0008]

[Problems to be solved by the device]

 In the above-mentioned first conventional example, a stable falling load is obtained by the combination of the lock bolt 59 and the ring-shaped leaf spring 58, but the one in which the upper base 57 and the stay 56 are fixed in advance is later installed. In order to attach the mounting screw 60, the fastening direction of the mounting screw 60 is on the front shield side, and an unnatural posture is forced, which makes the fastening work difficult.

Further, in the second conventional example, as shown in FIGS. 8A and 8B, the edge of the ring-shaped leaf spring 71 falls off while scraping the wall surface of the through hole 77 of the upper base 72, so that the load is stable. However, in some cases, it was difficult to satisfy the stipulations in the domestic laws and regulations that the load must fall off at 45 kgf or less from the range assuming a 45 ° cone centering on the pivot.

Therefore, according to the present invention, the upper and lower bases are fixed in a state where the ring-shaped leaf spring and the lock nut are temporarily connected, and then the stay and the lock nut are fixed with the mounting screw, and the stay is fixed from below with the mounting screw. It provides a falling structure that can be fixed.

[0011]

[Means for Solving the Problems]

 The present invention is characterized in that a ring-shaped leaf spring and a lock nut are temporarily held between a lower base and an upper base, and a stay is engaged with the lock nut and fixed with a screw from below. It is a structure in which the mirror is removed. Further, according to the invention of the present application, the lock nut has a spherical portion for engaging with the ring-shaped leaf spring and is provided with a protrusion for preventing rotation, while the stay has a flat oval or rectangular concave portion. It is equipped.

[0012]

[Function of the device]

 According to the present invention, since the lower base and the upper base are fixed by the mounting screws in advance, and the lock nut and the stay arranged between the bases are fixed by the mounting screws, it is possible to directly mount them without any unreasonable posture during the assembly work. You can do it from the bottom of the stay. Also, the elastic deformation of the projection causes the head of the lock nut to fall out, so that a stable falling load can be obtained.

[0013]

【Example】

 1 is an exploded perspective view showing an example of the invention of the present application, FIGS. 2 to 3 are sectional views showing the main part of the same as above, and FIGS. 4 (a) to 4 (c) are drawings showing a lock nut portion. is there.

In the present invention, the lower base 3 is fixed to the front shield 1 with the adhesive 2. On the other hand, the stay 4, which supports a mirror (not shown), is provided with a through hole 4a through which a mounting screw B is inserted so that the lock nut can be locked.

Further, the lock nut 6 having a female screw engraved at the center has a rotation preventing recess 6b at the center of the head 6a thereof, and further has a spherical engagement portion 6c for engagement with a ring-shaped leaf spring which will be described later. It is provided with a rotation preventing convex portion 6d which is formed and which can be inserted into the rotation preventing guide hole 4a which is formed in the stay 4 and has a flat rectangular shape or an oval shape.

On the other hand, the lower base 3 is provided with a positioning guide 3a for locking the head of the lock nut 6 so as not to rotate, and further has a mounting hole 3b in which one end of the outer peripheral edge is engraved with a female screw. is doing.

The upper base 7 is formed with a through hole 7a through which the lock nut 5 is inserted and a step portion 7b for supporting the ring-shaped leaf spring 8, and the through hole 7c is formed at one end of the outer peripheral edge in the same manner as described above. Has been drilled.

Further, the ring-shaped leaf spring 8 has a through hole 8a formed in the center thereof and a protrusion 8b projecting toward the center point of the through hole 8a is arranged in a cross shape so that the head of the lock nut 6 is provided. It is formed so as to hold the portion 6a.

It should be noted that the upper base 7 and the stay 4 are provided with projections and recesses at their corresponding positions for positioning when joining the two.

Next, the procedure of mounting the present invention will be described with reference to FIGS. 2 and 3. That is, with respect to the lower base 3 adhered and fixed to the windshield 2, the stepped portion 7b of the upper base 7 is provided with the ring-shaped leaf spring 8 in which the lock nut 6 is inserted in advance, and the rotation preventing recess 6b is formed. The bases 3 and 7 are joined with the mounting screw 9 while matching the positioning guide 3a.

Next, after the lock nut 6 is inserted into the rotation preventing guide hole 4a of the stay 4 holding a mirror (not shown) to position the upper base 7 and the stay 4, the mounting screw B is attached to the female screw of the lock nut 6. It is fixed to the stay 4 from below as shown in FIG. At this time, since the lock nut 6 is inserted into the rotation preventing guide hole 4a, it can be tightened even if the mounting screw B is rotated.

According to the present invention thus configured, when the head of the driver or the like hits the mirror at the time of a collision, a force pulling the stay 4 is generated in a direction opposite to the direction in which the external force acts, and the head 6a of the lock nut 6 is generated. Elastically deforms the protrusion 8b of the ring-shaped leaf spring 8 to drop the lock nut 6 from the through hole 8a, releasing the fixing between the stay 4 and the upper base 7, and the stay 4 coming off from the upper base 7 and dropping. .

[0023]

[Effect of device]

 According to the present invention, not only the bases of the upper and lower parts can be fixed in advance, but also the stay and the base are fixed by tightening the mounting screws from the lower side of the stay after the lock nut is temporarily connected. Moreover, at that time, the lock nut is prevented from rotating, so the workability of assembly is excellent. Also, by devising the engagement part between the lock nut and the ring-shaped leaf spring, a stable drop load can be obtained.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a temporarily fixed state in a main part of the same drop structure.

FIG. 3 is a cross-sectional view showing a fixed state in a main part of the same falling structure.

FIG. 4 is a drawing showing a lock nut.

FIG. 5 is an explanatory diagram showing a conventional example.

FIG. 6 is an exploded perspective view showing the same as above.

FIG. 7 is a perspective view showing another conventional example.

FIG. 8 is a view for explaining a state when the same is dropped.

[Explanation of symbols]

 1 Front shield 2 Adhesive 3 Lower base 4 Stay 6 Lock nut 7 Upper base 8 Ring leaf spring 9 Mounting screw B Mounting screw

Claims (2)

[Scope of utility model registration request] 1. A ring-shaped leaf spring and a lock nut are temporarily held between a lower base fixed to a front shield and an upper base locked to the lower base,
A detachable inner mirror mounting structure, characterized in that the stay is fixed from the lower side of the stay with a mounting screw by the lock nut. 2. The lock nut according to claim 1, wherein a portion for engaging with the ring-shaped leaf spring is spherical, and the lock nut has a protrusion for preventing rotation, while the stay has a recess for preventing rotation. Inner mirror dropout structure.