JPH04347288A - Door locker - Google Patents

Abstract

PURPOSE:To raise the efficiency of fitting operation by a method in which an impact sound silencer is integrally set on the contact position between a latch and an unlock position of housing holding the latch rotatably. CONSTITUTION:A latch 13 having a half latch coupler 13a, a full latch coupler 13b, and a coupling groove 13e, which are covered with a resin layer 13d, is supported on a housing 10 and moved clockwise by a spring 15. A pole 14 with a claw 14a is supported on the housing 10 and moved counterlcokwise by the spring 16. A planar portion 18 is formed for the housing 10 and a projection 19 with an aperture 20 is provided on the resin layer 13d for forming a sound silencer. A striker is forcibly put into the groove 13e to turn the latch 13 and coupled by the claw 14a for closing. The pole 14 is further turned by handle, the claw 14a is uncoupled, and the latch 13 is turned until the projection 19 comes into contact with the planar portion 18 for opening the door. The sound silencer can thus be formed at low cost and the losses of parts and goods can be prevented.

Description

[Detailed description of the invention]

0001

[Purpose of the invention]

0002

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door lock device.

0003

2. Description of the Related Art Conventionally, as a door lock device of this type, one shown in FIG. 5 is known. The latch 2 includes a housing 1, a latch 2 rotatably supported by the housing 1, a latch body 2a, and a resin layer 2b covering the latch body 2a, and engageable with a striker (not shown).
A pawl 3 is rotatably supported by the housing 1 and engages with the latch 2 to restrict the rotation of the latch 2 when the striker and the latch 2 are engaged. When the striker enters, the latch 2 rotates while being pressed by the striker and engages with the pawl 3, so that the rotation of the latch 2 is restricted and the striker and latch 2 are brought into an engaged state, that is, a locked state. A stopper pin 4 is formed in the housing to set the unlock position of the latch 2 when the latch 2 returns from the locked state to the unlocked state. A rubber tube 5 having an elastic force, which is a separate member from the housing 2, is disposed in order to prevent collision noise when the housing contacts the stopper 4.

0004

However, in the above-mentioned door lock device, the rubber tube 5 itself is small and easily deformed, and requires high positioning accuracy with respect to the stopper pin 4 during assembly. , requires a large amount of assembly man-hours, and
They were easily lost or missing during assembly, and were difficult to assemble.

[0005] Therefore, the technical object of the present invention is to improve the ease of assembling a sound damping part (rubber tube) for preventing the generation of collision noise when the latch returns to the unlocked position. be.

[0006]

[Structure of the invention]

[0007]

[Means for Solving the Problems] The technical means taken in the present invention to solve the above-mentioned technical problem is that the striker is formed in the housing and comes into contact with the latch in the unlocked position when the striker and the latch are not engaged. and a sound damping portion integrally formed at the abutting portion between the latch and the wall.

[0008]

[Operation] The above technical means operates as follows. The muffler is integrally formed at the abutment between the latch and the wall. Thereby, there is no need to newly provide a sound deadening section as a separate member, and thereby, ease of assembly can be improved.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings.

As shown in FIG. 1, pins 11 and 12 are erected on the housing 10, a latch 13 is rotatably supported around the pin 11, and a pawl 14 is rotatably supported around the pin 12. ing. This latch 13 includes a metal latch body 13c and a resin layer 13 covering the latch body 13c.
d, and the pole 14 is made of a metal material. Further, the latch 13 is formed with a half latch locking part 13a and a full latch locking part 13b, and the pawl 14 is formed with a claw part 14a that can engage with the half latch locking part 13a or the full latch locking part 13b. There is. Further, the latch 13 is formed with an engagement groove 13e that can be engaged with a striker (not shown). An open striker insertion groove 10a is formed on the rotation locus of the engagement groove 13e caused by the rotation of the latch 13 located between the pins 11 and 12 of the housing 10. Further, a groove 10b is formed in the housing 10, and a spring 15 is disposed within the groove 10b, one end of which is engaged with the housing 10, and the other end of which is engaged with a protrusion 13f formed on the latch 13. It is set up. Latch 13
is constantly urged in the unlocking direction (clockwise in FIG. 1) by the urging force of the spring 15. Furthermore, a groove 10c is formed in the housing 10.
A spring 16 is disposed within c, and has one end locked to the housing 10 and the other end locked to a protrusion 14b formed on the pole 14. The pawl 14 is moved in the direction in which the claw portion 14a and the half latch locking portion 13a or the full latch locking portion 13b engage with each other due to the biasing force of the spring 16.
It is always biased in the counterclockwise direction (as shown in FIG. 1).

As shown in FIGS. 1 and 2, the housing 10 is integrally formed with a wall 17 that abuts the latch 13 to set the unlocked position of the latch 13. As shown in FIGS. A flat portion 18 is integrally formed on this wall portion 17 . Further, a convex portion 19 that comes into contact with the flat portion 18 is integrally formed on the resin layer 13d of the latch 13, and a gap portion 20 is integrally formed within this convex portion 19. This flat part 18, convex part 19
The gap portion 20 constitutes a muffling portion 21 .

The housing 10, in which the latch 13 and the pawl 14 are disposed, is provided on the vehicle door (not shown), and the striker is provided on the vehicle body (not shown).

Next, the operation of the present invention will be explained.

FIG. 1 shows an unlocked state in which the vehicle door is opened or can be opened relative to the vehicle body. In this state, when the door is closed, the striker enters the striker insertion groove 10a and engages the latch 13 in the engagement groove 13e.
engage with. The latch 13 is pressed by the entry of the striker and rotates counterclockwise in FIG. match. This restricts the rotation of the latch 13 and brings the striker into a locked state in which it is engaged with the engagement groove 13e. At this time, the half latch locking portion 13a or the full latch locking portion 1
3b and the claw portion 14a are engaged by the spring 1 of the pawl 14.
6 in the counterclockwise direction as shown in FIG. As a result, the vehicle door is closed relative to the vehicle body. In addition, in this closed state, when a handle (not shown) provided on the door is operated, the pawl 14 is moved by the spring 1.
It rotates clockwise in FIG. 1 against the urging force of 6. As a result, the engagement between the half latch locking part 13a or the full latch locking part 13b and the claw part 14a is released, and the latch 13 is rotated clockwise in FIG. 1 by the biasing force of the spring 15 and returned to the unlocked position. The engagement between the striker and the engagement groove 13e is released. As a result, the vehicle door is in an open state or an openable state with respect to the vehicle body. This latch 13
The rotation of the latch 13 is regulated by the contact between the latch 13 and the wall 17, and the latch 13 reliably returns to the unlocked position.

At this time, the contact between the latch 13 and the wall portion 17 is achieved by the contact between the flat surface portion 18 and the convex portion 19, and the impact at the time of contact is caused by the deflection of the convex portion 19 due to the action of the gap portion 20. absorb. Thereby, the collision noise caused by the contact between the latch 13 and the wall portion 17 can be reduced.

As described above, the muffler 21 for reducing the collision noise caused by the contact between the latch 13 and the wall 17 includes the flat surface 18 integrally molded on the wall 17 of the housing 10 and the resin layer of the latch 13. It is constituted by a convex portion 19 integrally molded with 13d. Therefore, there is no need to newly assemble the muffling section 21 as a separate member, and the muffling section 21 exists by assembling the latch 13 to the housing 10. Thereby, ease of assembly can be improved.

As shown in FIG. 3, the muffler 21 is a recess 2 integrally formed in the latch body 13c of the latch 13.
2, and a recess 2 integrally formed in the resin layer 13d of the latch 13.
2, and a convex portion 25 that is integrally molded with the wall portion 17 and comes into contact with a portion of the flat portion 24 where the gap portion 23 is located.
It may also be composed of. In this case, latch 13 and wall 1
The contact between the latch 13 and the wall portion 17 is made by the contact between the flat portion 24 and the convex portion 25, and the impact at the time of contact is absorbed by the deflection of the flat portion 24 due to the action of the gap portion 23, and the latch 13 and the wall portion 17 Reduces collision noise caused by contact with As shown in Figure 4,
Plane portion 2 integrally formed on resin layer 13d of louch 13
6, a convex portion 27 that is integrally formed with the wall portion 17 and comes into contact with the plane portion 26, and a gap portion 28 that is integrally formed within the convex portion 27. In this case, the contact between the latch 13 and the wall portion 17 is achieved by the contact between the flat portion 26 and the convex portion 27, and the impact at the time of contact is absorbed by the deflection of the convex portion 27 due to the action of the gap portion 28. This reduces the collision noise caused by the contact between the latch 13 and the wall 17.

[0018]

Effects of the Invention The present invention comprises a housing, a latch that is rotatably supported by the housing and is made of a latch body and a resin layer that covers the latch body and is engageable with a striker, and a latch that is rotatably supported by the housing. a door lock device having a pawl that is supported by a pawl that engages with the latch and restricts rotation of the latch when the striker and the latch are engaged, the pawl being formed on the housing and having a pawl that prevents the striker from moving between the striker and the latch; Since the door lock device is configured to include a wall portion that can come into contact with the latch in the unlocked position in the engaged state, and a sound damping portion that is integrally formed at the abutment portion between the latch and the wall portion, the following can be achieved. It has the same effect.

[0019] There is no need to newly provide a sound-muffling section as a separate member to reduce the collision noise caused by the contact between the latch and the wall, and the presence of the sound-muffling section is eliminated by assembling the latch to the housing. Become. This reduces the number of man-hours required to assemble the muffling part, and also eliminates the risk of losing or missing parts of the muffling part.
Assemblability can be improved.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing a door lock device according to the present invention.

FIG. 2 is a partially enlarged view of FIG. 1 showing a muffling section.

FIG. 3 is an enlarged view corresponding to FIG. 2 showing a first modification of the muffling section.

FIG. 4 is an enlarged view corresponding to FIG. 2 showing a second modification of the muffling section.

FIG. 5 is a plan view showing a conventional door lock device.

[Explanation of symbols]

10 Housing 13 Latch 14 Paul 17 Wall part 21　Sound deadening section 13c latch body part 13d Resin layer

Claims (4)

[Claims] 1. A housing, a latch rotatably supported by the housing and made of a resin layer covering the latch body and engageable with a striker; a latch rotatably supported by the housing and made of a resin layer covering the latch body; A door lock device having a pawl that engages with the latch to restrict rotation of the latch when the striker and the latch are engaged, the pawl being formed on the housing and when the striker and the latch are disengaged. A door lock device comprising: a wall portion that can come into contact with the latch in the unlocked position; and a sound damping portion that is integrally formed at the abutment portion between the latch and the wall portion. 2. The muffling portion includes a flat portion integrally formed with the wall portion, a convex portion integrally formed with the resin layer and in contact with the flat portion, and a gap portion integrally formed within the convex portion. A door lock device according to claim 1, comprising: 3. The muffler includes a recess integrally formed in the latch main body, and a flat part integrally formed in the resin layer, covering the recess and having a gap formed therein along the recess. 2. The door lock device according to claim 1, further comprising: a convex portion integrally formed with the wall portion and abutting against a portion of the plane portion where the gap portion is located. 4. The sound deadening portion includes a flat portion integrally formed with the resin layer, a convex portion integrally formed with the wall portion and abutting the flat portion, and a gap portion integrally formed within the convex portion. A door lock device according to claim 1, comprising: