JPS588977Y2 - Bolt fixing holder - Google Patents

Description

[Detailed description of the invention] This invention relates to a bolt fixing holder used when attaching a mounting piece to a vehicle body, etc. using mounting bolts, etc., and is particularly suitable for bolt fixing when attaching a frame of a seat belt retractor to a vehicle. Regarding the holder.

A seatbelt retractor that retracts the occupant restraining webbing of the seatbelt device by a biasing force is preferably disposed embedded inside the vehicle body in order to reduce the protrusion into the single compartment.

For this reason, mounting bolt insertion holes are provided in the mounting pieces of the retractor frame to secure the retractor to the vehicle body.

To explain this according to FIG. 1, the seatbelt retractor 10 has a take-up shaft 14 pivotally supported in a frame 12 bent in a U-shape so as to take up the entire occupant restraint webbing 16. Both ends of 12 are provided with outwardly extending mounting pieces 18 and 19.

Attach these mounting pieces 1B and 19 respectively) 20.21
is applied and screwed onto a welding nut 24 of the vehicle body 22.

In this case, the seat belt retractor 10 is fastened to the vehicle body 22 by inserting the frame 12 from the vehicle interior 26 into the vehicle body interior 28, and then applying the mounting bolts 20 to the mounting pieces 18.

However, when installing like this, there are two mounting ports)
One of the mounting bolts 20 and 21 is attached to the nut 2 first.
4, the other mounting bolt 21 acts as a support and prevents the mounting piece 18 from approaching the vehicle body 22. If the mounting bolt 20 is screwed tightly, the frame 12 will bend and the tractor will operate. This may cause damage to the parts.

This problem can be solved by threading the mounting bolts 20 and 21 in small amounts alternately, but the assembly work becomes extremely complicated and productivity decreases.

The above-mentioned problem is particularly noticeable when a paper nut 30 is provided on the threaded portion of the mounting bolt 20, 21 to prevent it from falling off the frame 12 before assembly.

Therefore, if this paper nut 30 is screwed onto the tip of the mounting bolt as shown in FIG. 2, the above-mentioned problem can be alleviated to some extent, but if the head of the mounting bolt is attached to the frame 12 or this frame 12'! rIt is movable by the length 1 (dimension H in Figure 2) that comes into contact with the protective cover 32, which causes vibration and noise when transporting subassembly parts before assembly, and furthermore, when assembling, the heads of the mounting bolts are moved against the frame. 12
It is necessary to assemble the paper nut 30 to the vehicle body while maintaining the state shown in FIG. arise.

In consideration of the above facts, the present invention locks the mounting bolt applied to the mounting piece at any position relative to the mounting piece, so that it does not move relative to the mounting piece before assembly, and is securely mounted during assembly. It is an object of the present invention to provide a bolt fixing holder that can be easily assembled.

The bolt fixing holder according to the present invention is provided with a first piece and a second piece that are connected to each other by a substantially U-shaped connecting part and arranged on both sides of a mounting piece, and each of these pieces has a bolt insertion hole provided therein. A plurality of protrusions projecting inward are formed on the mounting bolt, and the mounting bolt can be locked at any position by screwing into the threaded portion of the mounting bolt.

Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 3, the fixing holder 34 according to the present invention is integrally molded from synthetic resin, with a first piece 36 and a second piece 38.
, a connecting portion 40 and a plurality of protrusions 42.

Here, the first piece and the second piece are arranged as flat plates facing each other with an interval slightly larger than the wall thickness of the mounting piece 18 of the tractor frame 12, and their planar shape is similar to that of the mounting piece 18.
The shape is said to be similar to that of

The peripheral portions of the first and second pieces 36 and 38 are connected by a substantially U-shaped connecting portion 40 and fixed to each other.

Therefore, a substantially rectangular opening 44 is formed between the first piece 36 and the second piece 38, and the retractor frame mounting piece 18 can be inserted between the first piece and the second piece. It looks like this.

Note that the gap between the first piece 36 and the second piece 38 is the same as that of the mounting piece 1.
It is also possible to make a press-fit dimension so that it is in close contact with 8.

Next, coaxial bolt insertion holes 46 are formed in the center portions of the first piece 36 and the second piece 38, and the bolt insertion holes of the mounting piece 18 are inserted between the first piece 36 and the second piece 38. 48 and is arranged coaxially.

A large number of protrusions 42 protrude inwardly from these bent bolt insertion holes 46 to substantially reduce the diameter of the bolt insertion holes 46. The outer diameter of the threaded portion of the mounting bolt 20 is also made smaller.

Therefore, if the mounting bolt 20 is inserted into the bolt insertion hole 46° 48 while rotating after inserting the mounting piece 18 between the first piece 36 and the second piece 38, the mounting bolt 20 will be inserted between the opposing spans of the tip of the protrusion 42. Since it is press-fitted and locked, it can be installed in any desired position.

! When the bolt 20 is passed through the insertion hole 46.48 like an octopus, the movement of the fixing holder 34 is stopped by the mounting bolt 20, so it does not fall off from the mounting piece 1B, and the connecting portion 40 Since it comes into contact with the mounting piece 18, it does not rotate around the axis of the mounting bolt 20.

The fixing holder 34 of this embodiment configured in this way locks the mounting bolt 20 at an arbitrary position.
After the tip of the 0 passes through the first piece 36 and the attachment piece 18, if it is slightly screwed into the protrusion 42 of the second piece 38 and locked, the seat belt retractor can be assembled as shown in FIG.
Even if only one of the two mounting bolts 20 and 21 provided on the vehicle body is screwed into the welding nut 24 of the vehicle body first, the other mounting bolt will not interfere with this screwing in any way. It can be assembled properly without any problems.

As explained above, the bolt fixing holder according to the present invention has a first piece and a second piece disposed on both of the mounting pieces, a connecting part connecting these pieces, and a projection into the bolt insertion hole of the first piece and the second piece. Since it is provided, manufacturing is simple, and the mounting bolt does not move relative to the mounting piece before assembly, and it has an excellent effect that it can be locked to the mounting piece at any position.

[Brief explanation of the drawing]

(Figures 1 and 2 are conventionally used seatbelts)
J) Side view showing how the rafters are assembled to the vehicle body, Part 3
FIG. 4 is an exploded perspective view showing the bolt fixing holder according to the present invention, and FIG. 4 is a side view showing the state in which the seat belt retractor is assembled to the vehicle body. 18.19... Mounting piece, 20.21... Mounting bolt, 34... Fixing holder, 36... First piece, 38...
...Second piece, 40...Connection part, 42...Protrusion, 46
．． 48...For bolt inserter

Claims (1)

[Scope of utility model registration request] A first piece and a second piece each having a bolt insertion hole corresponding to a mounting bolt insertion hole of the mounting piece and having a spacing slightly larger than the wall thickness of the mounting piece; A substantially U-shaped connecting portion that connects to each other;
A bolt fixing holder comprising a plurality of protrusions that are provided in the bolt insertion holes of the first piece and the second piece, protrude inward, and have a diameter smaller than the outer diameter of the threaded portion of the mounting bolt.