KR100694448B1 - Built-in detent switch of door latch - Google Patents

Abstract

The present invention relates to a door latch mounted on an auto sliding door or a power closing door to open and close a door, the door latch being rotatably coupled to the door latch, and having a recess groove recessed inwardly and having one end portion of the recess groove. The first operating surface is provided to form a gentle inclined surface, and the other end of the concave groove has a second operating surface having a protruding locking projection, and the yaw when the door moves in the closing direction in the unlocked state of the door. A latch member that receives the striker in the mouth groove and is locked in one stage, and locked in two stages so as not to be released from the striker when the door is completely closed; It is installed on the upper side of the latch member and rotates while sliding in contact with the first operating surface when the latch member is switched to single stage locking, and contacts the second operating surface when the latch member is switched to two stage locking. A ratchet member having a latching portion fixed to the latching projection to fix the position of the latch member after the rotation; A lever ratchet tightly coupled to an upper portion of the ratchet member to rotate together with the ratchet member; And a position in contact with the lever ratchet, wherein the lever ratchet contacts the lever ratchet when the latch member is unlocked to generate an on signal, and is spaced apart from the lever ratchet when the latch member is in one stage locking. And a detent switch which is turned off when the latch member is temporarily contacted when the latch member is rotated from the first stage locking to the second stage locking. The state of the door detected by the switch is characterized in that for transmitting to the user. The detent switch installed on the door latch of the auto sliding door or the power closing door detects the door's open state, 1st stage locking and 2nd stage locking status, and informs the user that the door is open and locked easily. have.

Description

A structure with a built-in detent switch of a door latch}

1 is a perspective view of a door latch according to the present invention.

2 is a perspective view of the door latch according to FIG. 1;

3a to 3c show an operational perspective view of the door latch according to FIG.

4 is an on / off signal state diagram of a detent switch according to the present invention;

* Explanation of symbols for the main parts of the drawings

100: striker 200: door latch

210: detent switch 212: contact detection unit

220: latch member 222: recessed groove

230: ratchet member 240: lever ratchet

242: switch contact

The present invention relates to a door latch, and more particularly, a door latch having a detent switch for detecting an open state, a first stage locking, and a second stage locking state of a door in an automobile equipped with an auto sliding door or a power closing door system. It is about.

In general, when the sliding door is changed from the open state to the closing state, the door is closed and primarily locked while the striker is held by the latch lever mounted inside the door latch assembly.

After the latch lever receives the striker, the striker is restrained from being released from the latch lever by the foul lever or the like so as to be secondarily locked so that the door does not open arbitrarily.

However, in the case of a car equipped with a system capable of automatically closing the door, such as an auto sliding door or a power closing door, when the door is not completely locked due to children's mischief or the vehicle is parked on a slope, the door does not lock completely May occur.

At this time, when starting the vehicle in a state in which the door is not completely locked, a safety problem may occur, and therefore, a mechanism capable of informing the user of an open state or a locking state of the door is required.

An object of the present invention is to install a detent switch on a door latch of an automobile equipped with an auto sliding door or a power closing door system, so that the detent switch detects the opening of the sliding door, the first stage locking, and the second stage locking state. To provide a detent switch built-in structure of the door latch that can inform.

In order to achieve the above object, the present invention is a door latch for opening and closing the door is mounted on the auto sliding door or power closing door, rotatably coupled to the door latch, the recess groove recessed inward The first operating surface is provided at one end of the concave groove to form a gentle inclined surface, and the other end of the concave groove is provided with a second operating surface having a protruding locking protrusion, and the door is unlocked. A latch member that receives a striker in the recessed groove and locks in one stage when the door moves in a closing direction, and is locked in two stages so as not to be released from the striker when the door is completely closed; It is installed on the upper side of the latch member and rotates while sliding in contact with the first operating surface when the latch member is switched to single stage locking, and contacts the second operating surface when the latch member is switched to two stage locking. A ratchet member having a latching portion fixed to the latching projection to fix the position of the latch member after the rotation; A lever ratchet tightly coupled to an upper portion of the ratchet member to rotate together with the ratchet member; And a position in contact with the lever ratchet, wherein the lever ratchet contacts the lever ratchet when the latch member is unlocked to generate an on signal, and is spaced apart from the lever ratchet when the latch member is in one stage locking. And a detent switch which is turned off when the latch member is temporarily contacted when the latch member is rotated from the first stage locking to the second stage locking. The state of the door detected by the switch is characterized in that for transmitting to the user.

The lever ratchet is provided with a switch contact portion for contacting the detent switch, the detent switch is provided with a touch sensing unit for detecting the contact of the switch contact portion to generate an on signal when the switch contact portion is contacted do.

The driver's seat instrument panel of the vehicle equipped with the detent switch is provided with a door state display unit for transmitting the open or first stage locking and the second stage locking state of the door detected from the detent switch to the user. do.

Hereinafter, a built-in structure of the detent switch of the door latch according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view of a door latch according to an embodiment of the present invention, FIG. 2 is a perspective view of the door latch according to FIG. 1, and FIGS. 3A to 3C are operation perspective views of the door latch according to FIG. 2.

As shown in FIGS. 1 to 3C, a detent switch 210 and a striker 100 for detecting a state of a door (not shown) are disposed inside the door latch 200 according to an embodiment of the present invention. The latch member 220 accommodates and locks the door, the ratchet member 230 for restraining the latch member 220, and the ratchet member 230 rotate together with the latch member 220 to contact or be separated from the detent switch 210. A lever ratchet 240 for transmitting the state of the member 220 to the detent switch 210 is installed.

The detent switch 210 is provided with a touch sensing unit 212 to generate an on signal when the lever ratchet 240 contacts the touch sensing unit 212, and the lever ratchet 240 is connected to the touch sensing unit. Off when away from 212. The detent switch 210 will be described in detail later.

As shown in FIGS. 3A-3C, the latch member 220 is pivotally coupled to the interior of the door latch 200, and is adapted to receive the striker 100 when the door is operated in the closing direction A. FIGS. It has a recessed groove 222 recessed into.

The first operating surface 224 and the second operating surface 226 are formed at both ends of the concave groove 222, respectively, and the overall shape of the latch member 220 provided with the same has a shape similar to a bird. .

Referring to FIG. 3A, the first operating surface 224 formed at the left end of the recessed groove 222 is formed to form a gentle slope, and the second operating surface 226 formed at the right front end of the recessed groove 222. The locking projection 226a is formed to protrude to the outside of the plate surface forming a streamlined shape.

When the door is operated in the closing direction A, the latch member 220 is rotated in the B direction while receiving the striker 100 in the recess groove 222 to be locked in one step.

As shown in FIG. 3A, the ratchet member 230 is rotatably installed on the upper side of the latch member 220, and a hook portion 232 protruding in a streamline is formed at one end thereof.

The ratchet member 230 intercepts the latch member 220 such that the latch member 220 is not spaced apart from the striker 100 arbitrarily in a state where the latch member 220 accommodates the striker 100. That is, the latch 232 is locked to the latching protrusion 226a so that the latch member 220 is locked in two stages so as not to rotate arbitrarily, thereby closing and locking the door (see FIG. 3C).

When the latch member 220 is in an unlocked state, that is, when the door is open, the ratchet member 230 is in contact with the latch member 220 and is pushed in the direction in which the detent switch 210 is located. .

When the latch member 220 is switched from the unlocked state to the first stage locking state, the latching portion 232 contacts the first operating surface 224 of the latch member 220 and slides in the C direction, and the latching member 230 is moved. Is rotated.

When the latch member 220 is in the first locking state, the ratchet member 230 is not in contact with the latch member 220 and thus is not pushed toward the detent switch 210 (see FIG. 3B).

As shown in FIG. 2, the lever ratchet 240 is stacked and closely coupled to the upper portion of the ratchet member 230, and the left end of the lever ratchet 240 contacts the detent switch 210 based on FIG. 3A. A switch contact portion 242 is formed.

As shown in FIGS. 3A and 3B, the lever ratchet 240 acts as one body with the ratchet member 230, and the switch contact 242 is in contact with the detent switch 210 in the open state of the door. When the ratchet member 230 rotates in the C direction, the ratchet member 230 is spaced apart from the detent switch 210.

When the latch member 220 is switched from the first locking state (FIG. 3B) to the second locking state (FIG. 3C), the ratchet member 230 slides along the second operating surface 226 of the latch member 220. While passing through the protrusion 226a.

Since the catching portion 232 of the ratchet member 230 protrudes outward and the catching protrusion () of the latch member 220 also protrudes outward, the moment when the catching portion 232 is located at the vertex of the catching protrusion (). The lever ratchet 240 spaced apart from the detent switch 210 is pushed by the ratchet member 230 to temporarily contact the detent switch 210.

As shown in FIG. 3C, when the latching portion 232 of the ratchet member 230 passes completely through the latching protrusion 226a of the latch member 220, the lever ratchet 240 pushed by the ratchet member 230 is removed. Again spaced apart from the detent switch 210.

In this way, the unlocked state of the door detected from the detent switch 210, and the first and second locking states are displayed on a door state display unit (not shown) provided in the instrument panel of the driver's seat. You will be informed of the status.

In the door latch according to the embodiment of the present invention having such a configuration, the signal system of the detent switch according to the open and closing states of the door is as follows.

4 is an ON / OFF signal state diagram of the detent switch according to the present invention.

As shown in FIGS. 3A and 4, when the door is open, the latch member 220 is spaced apart from the striker 100, and the latch member 220 is disposed on the first operating surface 224 of the latch member 220. The locking portion 232 of the 230 is positioned in contact.

The ratchet member 230 is pushed by the first operating surface 224 of the latch member 220 to push the lever ratchet 240, and the switch contact portion 242 formed on the lever ratchet 240 has a detent switch 210. It comes in contact with the touch sensing unit 212 formed in the).

As shown in FIG. 4, when the lever ratchet 240 contacts the detent switch 210 in the unlocked state of the latch member 220, the detent switch 210 generates an on signal. .

When the door is switched from the open state to the closing state, the latch member 220 is subjected to the first stage locking and the second stage locking.

As shown in FIGS. 3B and 4, when the latch member 220 is switched from the unlocked state to the one-step locking state, as described above, the ratchet member 230 is in the one-step locking state of the latch member 220. It does not contact the latch member 220. Accordingly, the lever ratchet 240 is not pushed to contact the detent switch 210 but is kept spaced apart from the detent switch 210. As shown in FIG. 4, the detent switch 210 is turned off because the switch contact 242 of the lever ratchet 240 is spaced apart from the touch sensing unit 212 of the detent switch 210.

As shown in FIGS. 3C and 4, the lever ratchet 240 is temporarily detented by the ratchet member 230 when the latch member 220 is switched from the first stage locking state to the second stage locking state. ) Is spaced apart.

Therefore, as shown in FIG. 4, the detent switch 210 is turned off after temporarily generating an on signal.

As shown in FIG. 4, when the latch member 220 is interrupted by the ratchet member 230 and the door is kept in the closed state, the detent switch 210 remains in the off state.

On the other hand, the present invention can be variously modified by those skilled in the art without departing from the gist of the invention.

As described above, the built-in structure of the detent switch of the door latch according to an embodiment of the present invention is a detent switch installed in the door latch of the auto sliding door or the power closing door, the door is open and the first stage locking and the second stage locking. By detecting and notifying the status, the user can easily know the opening and locking status of the door.

Claims (3)

In the door latch 200 mounted on the auto sliding door or the power closing door to open and close the door, Is rotatably coupled to the door latch 200, is provided with a recess groove 222 recessed inward and the first operating surface 224 is provided at one end of the recess groove 222 to form a gentle inclined surface The other end of the recessed groove 222 is provided with a second operating surface 226 having a protruding locking protrusion 226a, and the recessed groove (when the door moves in the closing direction in the unlocked state of the door). A latch member 220 which receives the striker 100 in the 222 and is locked in one stage, and is locked in two stages so as not to be separated from the striker 100 when the door is completely closed; It is installed on the upper side of the latch member 220, when the latch member 220 is switched to one-stage locking, it rotates while sliding in contact with the first operating surface 224, the latch member 220 is two steps The ratchet member is provided with a latching portion 232 for holding and latching the latching protrusion 226a after contacting and rotating the second operating surface 226 when it is switched to locking. 230; A lever ratchet 240 tightly coupled to an upper portion of the ratchet member 230 and pivoting together with the ratchet member 230; And Is installed in a position that can be in contact with the lever ratchet 240, when the lever ratchet 240 is in contact when the latch member 220 is unlocked to generate an on (on) signal, the latch member 220 Is off when spaced apart from the lever ratchet 240 when the first stage locking. The lever ratchet 240 is temporarily contacted when the latch member 220 rotates from the first stage locking to the second stage locking. The detent switch 210 is configured to include a detent switch 210 which is turned off after the on signal is generated when the signal is spaced apart, and transmits the state of the door detected by the detent switch 210 to the user. rescue. The method of claim 1, The lever ratchet 240 is provided with a switch contact part 242 for contacting the detent switch 210, and the detent switch 210 generates an on signal when the switch contact part 242 is contacted. The built-in detent switch of the door latch, characterized in that the touch sensing unit 212 is provided for detecting the contact of the switch contact (242). The method of claim 1, The door status display unit which transmits an open or one-stage locking and two-stage locking state of the door detected from the detent switch 210 to a driver's seat instrument panel of the vehicle equipped with the detent switch 210. Detent switch built-in structure of the door latch, characterized in that the provided.

Images