JPH0223739Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sealing structure for a vehicle door lock that locks a door through engagement between a lock assembly and a striker.

Conventionally, a vehicle door lock 1 as shown in FIG.
(e.g. automotive back door locks or side door locks), the lock assembly 2
When the striker 3 and the striker 3 are engaged, wind and rain, water, dust, etc. are prevented from entering the vehicle interior through the gap between the body side end face B1 where the striker 3 is provided and the door side end D1 where the lock assembly 2 is provided. For example, as a seal structure for
As shown in FIG. 3, there is a so-called inner seal structure in which a weather strip W is attached to the inside of the door lock 1, and a so-called outer seal structure (not shown) in which a weather strip is attached to the outside of the door lock 1. The latter can prevent wind, rain, dust, etc. from entering the vehicle interior and the inside of the door lock 1, but due to vehicle design, it is not always possible to use an outer seal structure, and the former inner seal is often used. The former inner seal structure can prevent wind, rain, dust, etc. from entering the vehicle interior, but wind, rain, and rain can pass through the opening 20 formed in the lock assembly 2 for the entry of the striker 3. There have been problems in that dust and the like can enter the inside of the lock assembly 2, causing rust on the lock assembly 2 itself, resulting in malfunction.

The present invention was developed by focusing on these conventional problems, and even when using an inner seal structure, it is possible to prevent wind, rain, dust, etc. from entering the inside of the lock assembly. It is an object of the present invention to provide a sealed structure for a vehicle door lock that can prevent the lock assembly itself from rusting.

In order to achieve such an object, the present invention provides a closed structure for a vehicle door lock in which a door is locked by engagement between a lock assembly and a striker, in which, when the lock assembly and the striker engage, there is a gap between the lock assembly and the striker. This vehicle door lock has an airtight structure, characterized in that an elastic seal member is provided to close the gap therebetween and cut off communication between the opening of the lock assembly and the outside air, and the elastic seal member wind and rain,
This prevents dust and other particles from entering the lock assembly.

Hereinafter, each embodiment of the present invention will be described based on the drawings. Note that the same parts as in the conventional example are given the same reference numerals.

4 and 5 show a first embodiment of the present invention, in which a striker 3 is fixed to an end face B1 of a body B, a striker 3 is fixed to an end face D1 of a door D,
A first having an opening 20 into which the striker 3 can enter.
A vehicle door lock 1 is constituted by a lock assembly 2 as shown in the figure.

The elastic seal member 4 is attached to the striker 3 by fitting the engagement protrusions 41, 41 of the elastic seal member 4 into the engagement holes 31, 31 of the striker 3. In the state where the elastic seal member 4 is attached to the striker 3, the bottom surface 42 of the elastic seal member 4 is in close contact with the base 32 of the striker 3, and the side surface 43 is in close contact with the side portion 33, and
The striker body 30 can protrude from the opening 40 of the elastic seal member 4. Further, when the elastic seal member 4 is elastically deformed when the lock assembly 2 and the striker 3 are engaged (the state shown in FIG. 5), the bottom surface 2 of the lock assembly 2
A contact surface 44 that is in close contact with the elastic seal member 1 and the side surface 22 so as to surround the opening 20 is formed on the outer edge of the elastic seal member 4 and has a substantially L-shaped cross section.

A weather strip W is attached to the inside of the door lock 1.
It has a so-called inner seal structure that prevents wind, rain, dust, etc. from entering the vehicle interior.

In the first embodiment with the above configuration, as shown in FIG. At 32,
The side surface 43 of the elastic seal member 4 is in close contact with the side portion 33 of the striker 3, and the contact surface 44 of the elastic seal member 4 is in close contact with the bottom surface 21 and side surface 22 of the lock assembly 2, respectively.

That is, the elastic seal member 4 is interposed between the lock assembly 2 and the striker 3 to close the gap between them, cutting off communication between the opening 20 of the lock assembly 2 and the outside air, so that wind, rain, dust, etc. This prevents entry into the interior of 2.

FIG. 6 shows a second embodiment of the present invention,
In the first embodiment, the elastic seal member 4 is attached to the striker 3, but as shown in FIG. In some cases, even if it is attached to the lock assembly 2, the same effect as in the first embodiment can be obtained.
Effects can be obtained.

According to the sealing structure of a vehicle door lock according to the present invention, when the lock assembly and the striker engage, the elastic seal member is interposed between the lock assembly and the striker, and the elastic seal member that is elastically deformed closes the opening of the lock assembly. Since the opening of the lock assembly and the striker are in close contact with the striker, the opening of the lock assembly is cut off from the outside air, so even if an inner seal structure is adopted, wind, rain, dust, etc. will not enter the inside of the lock assembly. This can prevent the lock assembly itself from rusting.

[Brief explanation of the drawing]

Figures 1 to 3 show a conventional example, where Figure 1 is a perspective view of the door lock, Figure 2 is an explanatory diagram showing the door lock in a disengaged state, and Figure 3 is an explanatory diagram showing the engaged state of the door lock. , FIG. 4 and FIG. 5 show the first embodiment of the present invention, FIG. 4 is an exploded perspective view, FIG. 5 is an explanatory diagram showing the engaged state, and FIG. 6 is a second embodiment of the present invention. It is an exploded perspective view showing an example. DESCRIPTION OF SYMBOLS 1... Vehicle door lock, 2... Lock assembly, 3... Striker, 4... Elastic seal member.

Claims (1)

[Claims for Utility Model Registration] In a closed structure for a vehicle door lock in which a door is locked by engagement between a lock assembly and a striker, there is provided a door lock that is interposed between the lock assembly and the striker when the lock assembly and the striker engage. A closed structure for a vehicle door lock, characterized in that an elastic seal member is provided to close the mutual gap and cut off communication between the opening of the lock assembly and the outside air.