JPS6019878Y2 - Automobile back door lock device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a back door lock device for an automobile.

As shown in Fig. 1, an automobile pack door lock device usually has a latch member 1 and a pawl 2 each mounted on a base 3 so as to be rotatable about a shaft 4.5, and a striker 11 provided on the vehicle body side facing the arrow. When the striker 11 is inserted in the A direction, the striker 11 hits the inner edge la' of the groove 1a of the latch member 1 and presses it, rotating the latch member 1 and fitting it into the inside of the pole 2. The claw portion 2a engages with the locking portion 1b of the latch member 1 to maintain the latched state.

10 is a spring suspended between the latch member 1 and the pole 2.

Reference numeral 6 denotes a wedge bumper made of a synthetic resin block having an inclined surface 6a;
is slidably mounted so that it is positioned on the insertion locus of the striker 11, and when the striker 11 is inserted in the direction of arrow A, it hits the inclined surface 6a and presses and slides it against the spring 7, and in the latched state, the inclined surface 6a presses the striker 11 into the groove 1a of the latch member 1 to prevent the striker 11 from wobbling in the latched state.

The wedge bumper 6 must be installed so that it can be inserted into the shaft rod 8 and slid while being guided by the shaft rod 8.
Conventionally, as shown in FIG. 1, a bracket 9 formed into a substantially U-shape with both ends bent at substantially right angles is fixed to the base 3 by welding or the like, and the shaft rod 8 is supported by this bracket 9. It is common to take

If a configuration in which the shaft rod 8 is directly supported on the base 3 itself is adopted, the bracket 9 described above can be omitted, resulting in many benefits such as a reduction in the number of parts, a reduction in assembly man-hours, and a reduction in weight. Since it is necessary to use a fairly thick metal plate such as an iron plate from the viewpoint of strength, the support part of the shaft rod 8 is formed by squeezing the base 3 itself and forming the acid by bending. However, there are problems in that the press molding operation is quite difficult and the cost is rather high.

In a locking device for a bank door, the present invention has a shaft 4 for attaching a latch member 1 and a pole 2 to a base 3;
5 is attached to the base 3 at one end and the reinforcing plate 12 at the other end, and has a structure in which the shafts 4 and 5 are supported on both sides.
In addition, we focused on the fact that the reinforcing plate 12 is considerably thinner than the base 3, and by using the reinforcing plate 12, the conventional bracket 9 can be omitted, reducing the number of parts, assembly man-hours, and The present invention is intended to reduce weight and cost, and the present invention will be explained below with reference to the drawings from FIG. 2 onwards.

In the present invention, as shown in FIGS. 2 and 3, the latch member 1 and the pawl 2 are rotatably attached to the base 3 by shafts 4 and 5, respectively, and the latch member 1 as shown in FIG.
The state in which the striker 11 is engaged with the ila of the pole 2
The claw portion 2a of the latch member 1 is held by engaging with the locking portion 1b of the latch member 1, which is the same as the conventional structure shown in FIG. As shown in FIG. 2, it is fixed to the reinforcing plate 12 by caulking, which is the same as the conventional one, but one end of the reinforcing plate 12 is extended laterally as shown in FIG. The tip of the extension portion 12a is bent to form a shaft support portion 12b that supports one end of the shaft rod 8 through which the wedge bumper 6 is inserted and supported.

A flange portion 8a is integrally formed near one end of the shaft rod 8, and when the shaft rod 8 is inserted into the hole 12b' provided in the support portion 12b, the flange portion 8a touches the surface of the support portion 12b. In addition, by supporting one end of the spring 7 on the flange portion 8a, problems such as rattling and coming out of the shaft rod 8 are prevented.

The other end of the shaft rod 8 is a hole 3b provided in the lower wall 3b of the base 3.
′ is inserted and supported.

The wedge bumper 6 inserted and supported by the shaft rod 8 is normally pressed against the lower wall of the base 3 by the spring 7, and as described above, the spring 7 is pressed against the inclined surface 6a of the striker 11. However, the lateral component force at that time is supported by the side wall of the base 3.

In the internal explanation, 2b indicates a rod for disengaging the pawl 2 from the latch member 1 to bring it into the unlatched state, and 3a indicates a striker fitting groove of the base 3, respectively.

FIG. 6 shows another example of the shaft rod 8. In this example, a flange 8a is provided near one end of the shaft 8, and a step 8b is formed near the other end. Since the portion 8b engages with the holes 12b' and 3b', the shaft rod 8 can be completely prevented from being pulled out or falling.

As described above, according to the present invention, it is possible to omit the bracket, which is a dedicated part for supporting the wedge bumper that was conventionally required, due to the extremely simple configuration, reducing the number of parts, assembly man-hours, and weight. It can bring benefits such as reduction and cost reduction, and has extremely large practical effects.

[Brief explanation of drawings]

Figure 1 is a front view of a conventional back door locking device, Figure 2 is a front view of a conventional back door lock device.
The figure is a front view showing an embodiment of the present invention, FIG. 3 is a bottom view of FIG. 2, FIGS. 4 and 5 are sectional views along X-X and Y-Y of FIG. 2, and FIG. FIG. 3 is a diagram showing a modified example of the shaft rod. 1...Latch member, 2...Pole, 3
...Base, 4.5 ...Axis, 6 $1
+6@@4 wedge bumper, 7... spring, 8... shaft rod, 8a... flange, 8b.
...Stepped portion, 11...Striker-12.
...Reinforcement plate, 12a...Extension part, 12b
・・・・・・Axle support part.

Claims (3)

[Scope of utility model registration request] (1) An extension part is integrally formed on a reinforcing plate to which the other end of the shaft rotatably supports the latch member and the pole fixed to the base, and the wedge bumper is inserted and supported at the tip of the extension part. A back door lock for an automobile, comprising a shaft support part that supports one end of a rod, one end of which is inserted and supported by the shaft support part, and the other end of the shaft which is inserted and supported by a base. Device. (2) A back door lock device for an automobile according to claim 1, wherein the shaft rod has a flange integrally formed near one end thereof. (3) A back door lock device for an automobile according to claim 2 of the utility model registration claim, characterized in that the shaft rod has a flange formed near one end and a stepped portion near the other end. .