JPH0613599Y2 - Locking structure for mounting bolts in setting rubber - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to a retaining structure for a mounting bolt in a setting rubber used when mounting a wiper motor or the like on a vehicle body.

[Problems to be Solved by Prior Art and Invention] Generally, a casing of a wire device such as a rear wiper is elastically (vibrationally) attached to a vehicle body via a setting rubber. . In such a case, when moving to the installation location, the casing with the setting rubber is handled as one set of assembly, and at this time, the mounting bolts are also set on the setting rubber. Leave it in a state. In this case, it is necessary to prevent the mounting bolt from being pulled out temporarily so that the mounting bolt does not come out. As shown in FIG. 5, the lip 3c is attached to the portion of the setting rubber that is out of the cylindrical collar portion 5 of the bolt insertion surface. It is proposed that this is done by projecting it and bringing it into contact with the mounting bolt 4. However, this one has a drawback that the mounting bolt easily falls off during transportation because the contact area with the bolt of the lip 3c becomes a partial line contact and the contact area becomes small. In order to achieve this, it is necessary to lengthen the length of the lip in the axial direction, but then the setting rubber itself must be lengthened, which is against the compactness and needs to be improved.

[Means for Solving the Problems] The present invention has been made in view of the above circumstances and was devised with the object of providing a retaining structure for a mounting bolt in a setting rubber that can eliminate these drawbacks. Has a mounting bolt through hole in the center,
A setting rubber having a groove-shaped portion to which a casing is fitted on an outer peripheral portion, a tubular collar is inserted and attached to the through hole, and the casing is elastically attached to a vehicle body. The setting rubber has, on the inner wall of the through hole, a protrusion protruding toward the axial center side and forming a long protrusion in the axial direction, while the collar is formed with a notch through which the protrusion penetrates. Then, the convex portion penetrating the notch is brought into contact with the mounting bolt to prevent the mounting bolt from coming off.

The present invention, with this configuration, can reliably prevent the mounting bolt from coming off.

[Embodiment] Next, an embodiment of the present invention will be described with reference to the drawings. In the drawings, reference numeral 1 denotes a casing containing a motor for a rear wiper, and a mounting seat 2 is formed on the casing 1 to which a setting rubber 3 is attached. The groove-shaped portion formed in the above is fitted into the mounting seat 2 to be assembled.

The setting rubber 3 is provided with a through hole 3a through which the mounting bolt 4 penetrates. The inner wall of the through hole 3a has a protrusion projecting toward the axial center and a long projecting in the axial direction. Article 3b is formed. On the other hand, 5 is a cylindrical color, and the setting rubber 3
It is to be inserted and assembled into the through hole 3a, but the collar 5 is formed with a cutout portion 5a which is cut long in the axial direction in the same manner as the protruding strip 3b at a portion corresponding to the protruding strip 3b. Has been done. When the collar 5 is inserted and assembled in the through hole 3a, the protrusion 3b penetrates the notch 5a. When the mounting bolt 4 penetrates the collar 5 in this state, the protrusion 3b The mounting bolt 4 is dimensioned so as to come into contact therewith, so that the mounting bolt 4 is prevented from being pulled out.

In the embodiment of the present invention constructed as described above, the mounting bolt 4 is prevented from coming off by the protrusion 3b penetrating the notch portion of the collar 5. In this case, the setting rubber is used. The ridge 3b provided on the protrusion 3 protrudes in the axial direction from the notch 5a provided on the collar 5 and is long in the axial direction. As a result, the notch 5
It is possible to secure a large contact area of the ridge 3b that penetrates a and contacts the mounting bolt 4, and it is possible to reliably prevent the mounting bolt 4 from falling off.

Moreover, since the ridge 3b is formed by notching the collar and protruding from this to abut the mounting bolt 4,
The length of the ridge 3b can be properly secured without increasing the total length of the setting rubber unlike the conventional one in which a rib is provided at a position outside the collar.

In the present invention, the size, shape, etc. of the ridge 3b are not particularly limited and may be appropriately formed as needed. For example, as shown in FIG. The contact surface of the mounting bolt 4 can be formed into a sawtooth shape to further enhance the retaining effect. In this case, a retaining effect due to interference with the screw groove of the mounting bolt 4 can be expected. Further, as shown in FIG. 4B, by making the projection 3b having a saw-tooth shape into a tapered shape, the work of inserting the mounting bolt 4 can be facilitated. Further, as shown in FIG. 4C, the length of the convex 3b in the axial direction may be formed so as to be partially in surface contact without being formed over the entire length of the setting rubber 3. In such a case For the color 5
Since it is not necessary to form a cutout along the entire length and a part of the cutout may be formed, it is advantageous in terms of strength.

[Effects] In summary, since the present invention is constructed as described above, the setting rubber protrusion protrudes from the notch of the collar and comes into contact with the mounting bolt in a long state in the axial direction, and It can be prevented from falling off and can be prevented from falling off during transportation.

Moreover, since the mounting bolts are prevented from coming off by the setting rubber protrusions that penetrate the notches formed in the collar, a long protrusion in the axial direction is formed at the portion deviated from the collar. There is no problem that the setting rubber is lengthened in the axial direction like the one to prevent the mounting bolt from being pulled out, and the compactness is not impaired.

[Brief description of drawings]

The drawings show an embodiment of a retaining structure for a mounting bolt in a setting rubber according to the present invention.
FIG. 1 is a front view of a casing to which a setting rubber is attached, FIG. 2 is a sectional view of an essential part, FIG. 3 is a perspective view of an essential part,
4A and 4B are cross-sectional views of a main part of another embodiment, FIG. 4C is an exploded perspective view of the same, and FIG. 5 is a cross-sectional view of a main part of a conventional example. In the figure, 3 is a setting rubber, 3b is a ridge, 4 is a mounting bolt, and 5 is a collar.

Claims (1)

[Scope of utility model registration request] 1. A mounting bolt through hole is provided in a central portion, a groove-like portion into which a casing is fitted is provided at an outer peripheral portion, and a cylindrical collar is inserted and attached to the through hole, and the casing is mounted on a vehicle body. A setting rubber for elastically attaching to the inner wall of the through hole, the setting rubber protruding toward the shaft core side and forming a long convex portion in the axial direction, The collar is provided with a cutout portion through which the convex portion penetrates, and the convex portion penetrating the cutout portion is brought into contact with a mounting bolt to prevent the mounting bolt from coming off. A structure to prevent the mounting bolts from coming off in the grabber.