JPH0116268Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a switch device for confirming door closure in an automobile door lock, and particularly to a structure for attaching a switch plate to a door lock board.

Conventional car back door locks include
It is opened when the striker enters the door lock, turning off the back door close confirmation lamp provided near the driver's seat, and closed when the striker leaves the door lock, causing the back door close confirmation lamp to turn red. Some devices are equipped with a switch.

This type of switch generally has a contact piece of a switch plate fixed to the door lock board with the base insulated, in synchronization with the thrusting and withdrawal movements of the striker.
Many have simple configurations that allow them to move away from or come into contact with the door lock board.

However, in order to attach the base of such a switch board to the door lock board in an insulated state, conventionally,
The upper and lower surfaces of the switch board are sandwiched between two insulating plates, and a bushing made of insulating material is fitted into the mounting hole drilled through them, and the mounting pin inserted into this bushing is inserted into the mounting hole. Previously, the switch board, insulating board, etc. had to be fixed to the door lock board, which had the disadvantage of requiring a large number of parts to install, and each part was small, making it troublesome to position them relative to each other, making the installation process extremely difficult. There were some inconveniences such as being complicated.

The object of the present invention is to provide an insulation holding device for a switch device for confirming door closure in an automobile door lock, which alleviates or eliminates the disadvantages and inconveniences of conventional devices as described above. The explanation will be based on.

1 to 7 show a first embodiment of the present invention.

A is the door lock and B is the striker.

A guide groove 2 for entering the striker B is cut in the center of the body 1 of the door lock A.
A latch 3 and a locking plate 4 are provided on both left and right sides of the guide groove 2, as shown in FIG.
are pivotally mounted with vertical shafts 5 and 6, respectively.

The latch 3 and locking plate 4 are of known type, and when the striker B enters the guide groove 2, the two prongs of the latch 3 engage with the striker, and one leg 3a of the latch 3 locks. It engages with the locking claw portion 4a of the king plate 4 and locks the striker B irremovably.

Further, the locking plate 4 is linked to an unlocking lever 8 which is pivotally attached to the rear plate 1a of the body 1 with a shaft 7 in the front and back direction, and the locking plate 4 is rotated counterclockwise in FIG. Due to the movement, the locking plate 4 is rotated clockwise in FIG.
The latch 3 is disengaged so that the striker B can be freely removed from the door lock A.

A conductive door lock board 9 is fixed to the shafts 5 and 6 above the latch 3 and the locking plate 4, and has a box-shaped part 9a in the center and side pieces 9b and 9c connected to the lower sides of the box part 9a. It is set up.

An upward protruding piece 9d is connected to the rear edge of the left side piece 9b, and a coil spring 10 is wound around the upward protruding piece 9d. The coil spring 10 has one end fixed to the rear plate 9e of the door lock board 9, and the other end fixed to a key point of the latch 3, and the latch 3 is fixed to the third
In the figure, it is biased clockwise.

On the front and rear edges of the right side piece 9c, there are upwardly protruding pieces 9f,
9g are arranged in a row, and a coiled spring 11 is wound around the rear upwardly protruding piece 9g. The coil spring 11 has one end fixed to the upwardly protruding piece 9f in front, and the other end fixed to a key point of the locking plate 4, and urges the locking plate 4 counterclockwise in FIG. There is.

On the right side of the box-shaped part 9a of the door lock board 9,
A rod 12 extending in the front-rear direction is fixed, and a sliding body 13 made of an insulating material is mounted on the rod 12. Sliding body 13 and rear plate 9 of door lock board 9
A compression coil spring 14 is compressed around the rod 12 between the
3 is always biased forward. Sliding body 1
On the left side of 3, the rear part bulges out slightly laterally.
(See Fig. 6) When the striker B enters the guide groove 2, the bulging surface of this sliding body comes into contact with the side surface of the striker B, and as the striker B enters, the sliding body 13 moves into the compression coil spring 14. It is configured to slide backward against the biasing force.

A buffer material 15 made of rubber or the like is fixedly provided at the left rear portion of the box-shaped portion 9a of the door lock board 9 to cushion the impact when the striker B enters.

16 is a conductive switch plate, which has a flat base 1
6a, a contact piece 16b which is connected to the front right side of the contact piece 16b and is L-shaped in plan and faces rearward, and a connecting terminal 16c for connecting a conducting wire which is erected at the rear end of the base 16a. The base 16a has a pair of mounting holes 17 and 18 in the front and back, and a contact piece 16.
A concave portion 16d that is bent downward in a V-shape is formed in the middle portion of b.

19 is an insulator made of soft synthetic resin material, etc.
A pair of clamping pieces 19b and 19c forming an L-shape in plan and connected to each other with a thin flexible piece 19a in the middle.
It is equipped with Short cylindrical portions 19d and 19e having outer diameters large enough to fit into the mounting holes 17 and 18 are protruded from portions of one of the clamping pieces 19b that correspond to the mounting holes 17 and 18 of the base 16a of the switch plate 16. has been done. The height of the short cylindrical portions 19d and 19e is determined by the thickness of the switch plate 16 and the other clamping piece 19.
The length shall be the same as the sum of the thickness of c or slightly shorter than that.

Engagement holes 1 having approximately the same diameter as the attachment holes 17 and 18 are formed in the portions of the other clamping piece 19c that correspond to the attachment holes 17 and 18 of the base 16a of the switch plate 16.
9f and 19g are drilled.

Then, by appropriately bending the flexible piece 19a into a U-shape, and holding the base of the switch plate 16 from above and below with the holding pieces 19b and 19c of the insulator 19, the short cylindrical parts 19d and 19e are held together. , switch board 1
Attachment holes 17, 18 in the base 16a of 6 and engagement holes 19f, 19g in the other clamping piece 19c
and each short cylindrical portion 19d, 19
The base 16 of the switch plate 16 is attached to the base 16 of the switch plate 16 with the mounting pins 20 and 21 having enlarged diameter heads at the upper ends, which are fitted into the
a is fixed to the upper surface of the box-shaped portion 9a of the door lock board 9 while being sandwiched between insulators 16. In addition,
The lower end of each mounting pin 20, 21 is caulked to the door lock base plate 9, as clearly shown in FIG.

Further, as described above, the base 16 of the switch plate 16
a to the upper surface of the box-shaped portion 9a of the door lock board 9, the recessed portion 16 of the switch plate 16
d enters into the movement locus of the sliding body 13 through a window hole 22 formed in the upper surface of the box-shaped portion 9a of the door lock board 9.
When the striker B is detached from the door lock A, the contact piece 16 is removed as shown by the solid line in FIG.
The free end of b is in contact with the door lock board 9,
When the striker B rushes into the door lock A and the sliding body 13 moves backward, the sliding body 13 pushes the concave portion 16d upward and makes contact, as shown by the imaginary line in FIG. Piece 16
The free end of b becomes separated from the door lock board 9.

A conducting wire (not shown) is connected to the contact terminal 16c of the switch plate 16, and with this conducting wire etc.,
An electric circuit is formed consisting of the battery back door closure confirmation lamp, the switch plate 16, and the door lock board 9 (ground), and as the switch plate 16 and the door lock board 9 are opened and closed, the lamp is turned off or turned on. You can check whether the back door is open or closed.

Since the first embodiment has the above-described structure, the base 16a of the switch plate 16 and the door lock board 9 are connected by the clamping piece 19b, and the connection between the switch plate 16 and the mounting pins 20, 21 is Insulated by the short cylindrical portions 19d and 19e, the upper surface of the switch plate 16 is covered with a clamping piece 19c, and is completely insulated.

Moreover, in the case of the first embodiment, one insulator 19
Advantages include that the switch plate 16 can be easily attached to the door lock board 9 by covering the base 16a of the switch plate 16, the number of parts is small, positioning of each part of the insulator 19 is easy, and the installation work can be carried out quickly. There is.

8 and 9 show a second embodiment of the invention.

In this embodiment, instead of one of the short cylindrical portions 19e in the first embodiment, a cylindrical projection 19e' having the same outer diameter as that of the short cylindrical portion 19e is provided protruding from one of the clamping pieces 19b of the insulator 19, A protrusion 19h having a smaller diameter than the protrusion 19e' is provided on the lower surface of the protrusion 19h, so that when the base 16a of the switch plate 16 is attached to the door lock board 9, the protrusion 19e' is attached to the mounting hole 18 of the switch plate 16 and the other clamping piece 19c. The protrusion 19h is fitted into the mounting hole 23 of the door lock board 9. The other configurations are the same as in the first embodiment.

In this second embodiment, one mounting pin 2
The switch plate 16 and the insulator 19 can be attached to the door lock board 9 with only 0, and the engagement of the protrusion 19e' with the mounting hole 18 of the switch plate 16 and the engagement hole 19g of the other clamping piece 19c, and the protrusion 19h and the mounting hole 23 of the door lock board 9, there is a possibility that the respective clamping pieces 19b, 19c of the switch plate 16 or the insulator 19 may be partially peeled off from the door lock board 9 or may be misaligned. There is an advantage that there is no In addition, it goes without saying that the same effects as in the first embodiment can be achieved.

10 and 11 show a third embodiment of the present invention.

In the third embodiment, the lower clamping piece 1
Engagement holes 19f' and 19g' corresponding to the mounting holes 17 and 18 of the switch plate 16 are bored in 9b, and short cylindrical parts 19 are formed at key points of the upper clamping piece 19c.
d' and a cylindrical projection 19 having a diameter-reducing step 19h'.
e'' are protruded from each other, and both clamping pieces 1 of the insulator 19 are provided.
When the switch plate 16 is sandwiched from above and below by 9b and 19c and attached to the door lock board 9, the short cylindrical portion 19d' passes through the mounting hole 17 of the switch plate 16 and engages with the engagement hole 19f', and the protrusion 19e'' passes through the mounting hole 18 of the switch plate 16 and engages with the engagement hole 19g', and the diameter-reducing stepped portion 19h' engages with the lower clamping piece 1.
It projects downward from 9b and enters into the mounting hole 23 of the door lock board 9. The other configurations are the same as in the first embodiment.

In this third embodiment as well, the same functions and effects as in the second embodiment can be achieved.

As is clear from the above, according to the present invention, the switch plate can be installed easily and quickly, and has good insulation properties, making it extremely convenient.

Further, in the present invention, the height of the short cylindrical part protruding from the inner surface of one of the clamping pieces is equal to or slightly shorter than the sum of the thickness of the switch plate and the thickness of the other clamping piece. By engaging with the mounting hole of the switch plate and the engagement hole of the other clamping piece, the following unique effects can be achieved.

(A) By fitting the short cylindrical part protruding from one of the clamping pieces into the mounting hole of the switch plate, it is possible to easily position and temporarily fasten one of the clamping pieces and the switch plate. By further fitting the part into the engagement hole of the other clamping piece, the mutual positioning of one clamping piece and switch plate and the other clamping piece can be easily performed.

That is, by fitting the short cylindrical portion into the mounting hole of the switch plate and the engagement hole of the other clamping piece, the mutual positioning of the three members, one clamping piece, the switch plate, and the other clamping piece, can be achieved. This can be done all at once, making it easier to attach them to the door lock board using attachment pins, and also simplifying the structure of both gripping pieces, making manufacturing easier.

(B) Even if there are slight manufacturing errors in the dimensions of each part,
As long as the height of the short cylindrical part is smaller than the sum of the thickness of the switch plate and the thickness of the other clamping piece, the switch plate will be securely clamped between both clamping pieces and firmly fixed to the door lock board, In particular, since there is no rattling in the vertical direction, stable switch operation can be expected at all times, and it is possible to prevent the timing of the switch operation from going out of order due to rattling in the vertical direction.

[Brief explanation of the drawing]

FIG. 1 is a plan view of an example of a door lock device equipped with a first embodiment of the present invention, FIG. 2 is a front view taken along the line -- in FIG. 1, and FIG. 3 is a cross-sectional view taken along the line -- in FIG. Figure 4 is a vertical cross-sectional view taken along the - line in Figure 1, Figure 5 is a vertical cross-sectional view taken along the - line in Figure 1, and Figure 6 is a vertical cross-sectional view taken along the - line in Figure 1.
7 is an exploded perspective view of the switch plate and the insulator, and FIG. 8 is an exploded perspective view similar to FIG. 7 in the second embodiment of the present invention. Figure 9 is a vertical sectional view of the main part, and Figure 10 is
The figure is an exploded perspective view similar to FIG. 7 of the third embodiment of the present invention, and FIG. 11 is a longitudinal cross-sectional view of the main parts. A... Door lock, B... Striker, 1...
Body, 1a... Rear plate, 2... Guide groove, 3... Latch, 3a... Foot piece, 4... Locking plate, 4a... Locking claw portion, 5, 6, 7... Shaft, 8 …
...Unlock lever, 9...Door lock board, 9a...
Box-shaped portion, 9b, 9c...Side piece, 9d...Upward projecting piece, 9e...Rear plate, 9f, 9g...Upward projecting piece, 1
0, 11... coiled spring, 12... rod, 13...
...Sliding body, 14...Compression coil spring, 15...Buffer material, 16...Switch plate, 16a...Base, 1
6b...Contact piece, 16c...Connection terminal, 16d...
...Concave bent portion, 17, 18...Mounting hole, 19...Insulator, 19a...Flexible piece, 16b, 19c...Pinching piece, 19a, 19d', 19e...Short cylindrical part, 19
e', 19e''...protrusion, 19f, 19f', 19g,
19g'...Engagement hole, 19h...Protrusion, 19h'...
Diameter reduction step, 20, 21... mounting pin, 22... window hole, 23... mounting hole.

Claims (1)

[Scope of utility model registration request] A base portion of a conductive switch plate is attached to a conductive door lock base plate in a door lock having a latch that is removable from a striker and a locking plate that engages with the latch and prevents rotation of the latch. is fixed through an insulator, and a part of the switch plate is disposed within the movement locus of a sliding body that can be moved together with the striker in the door lock when the striker enters and leaves the door lock. A part of the switch plate is pushed by the movement of the sliding body accompanying the entry of the switch plate, and a contact piece extending from the base of the switch plate is separated from the door lock base plate, thereby opening the switch. In the switch device for confirming closing of a door, the insulator is made up of a pair of clamping pieces connected to each other with a flexible piece in the middle, and the base of the switch plate is supported by both clamping pieces. At the same time, a plurality of short cylindrical parts whose height is equal to or slightly shorter than the sum of the thickness of the switch plate and the thickness of the other clamping piece are protruded from the inner surface of one of the clamping pieces. death,
The short cylindrical portion is fitted into a plurality of mounting holes drilled in the base of the switch plate and a plurality of engagement holes drilled in the other clamping piece, and the short cylindrical portion is inserted into the short cylindrical portion. 1. A switch device for confirming closing of a door in an automobile door lock, characterized in that the device has at least one mounting pin and is fixed to a door lock board with the base of the switch plate being held between both clamping pieces.