JPH03224980A - Latch position sensor for vehicular locker - Google Patents

Abstract

PURPOSE:To exactly detect the condition of door by a method in which a magnet is provided to a cam to be deformed rotationally with rotation of a latch pivotally attached to the lock body side and a Hall IC provided on the lock body side in a fitting position adjustable manner is operated. CONSTITUTION:In the recession 2 of a lock body 1, a latch 3 is pivotally supported on a shaft 4, a ratchet 5 is pivotally supported by a shaft 6, and a cam 14 is supported by a shaft 15. The cam 14 has S and N poles 18 and 19 and a Hall IC 20 on the outside. When door is opened, the latch 3 is clockwise moved by a spring 7, the cam 14 is turned to the upper position by the cam face 16, and IC 20 is faced with N-pole 19 to output positive signals. When the door is closed, the latch 3 is counterclockwise turned, IC 20 is faced with S-pole to output negative signals. Also, when the door is completely closed, IC 20 detects nonpole to output 0 signal. The condition of the door can thus be exactly sensed.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a latch position detection device for a vehicle locking device.

(Prior Art) Conventionally, there has been provided a latch that is pivoted on a lock body side and rotates by engaging with a striker that is fixed on the vehicle body side, a ratchet that is pivoted on the lock body side and prevents the latch from reversing, and A cam body that is mounted on the lock body side and rotates as the latch rotates, and a contact mechanism provided on the cam body, are used to control the door in an open state, a half-door state (half-latch state), and a closed door state (full-latch state). ) A vehicle locking device configured to be able to detect is well known.

(Problems to be Solved by the Invention) The above-mentioned known device is configured to be able to detect the door open state, door ajar state, and closed door state using a contact mechanism provided on the cam body, so timing adjustment is difficult. , there were issues that required high precision in assembly work, and issues of limited sustainability due to aging deterioration.

(Object of the Invention) The object of the present invention is to ensure reliable operation and maintain good performance.

(Means for Solving the Problems) Therefore, the present invention provides a latch 3 that rotates by engaging with a striker 8 that is mounted on the lock body l side and is fixed on the heavy body side, and a ratchet 5 that prevents the latch 3 from reversing; a cam body 14 that is pivotally mounted on the lock body 1 side and is rotationally displaced by rotation of the latch 3; a magnet 21 provided on the cam body 14; A latch position detection device for a vehicle locking device includes a Hole IC 20 that is operated by the magnet 21 that is fixed or adjustable in the mounting position on the lock body 1 side, and the magnet 21 has an S pole 18 and an N pole 19. The Hall ICs 20 are arranged in parallel at intervals or in parallel without any intervals.
and the relative position of the S pole 18 and the N pole 19,
A latch position detection device for a vehicle locking device configured to detect an open door state, a door ajar state, and a closed door state by detecting the S pole 18 and the N pole 19 and non-polarity;
and a vehicle characterized in that the Hall IC 20 is located above a guide groove 9 of the striker 8 formed in the lock body 1 and at an upper position where dust from the guide groove 9 does not reach. This is a latch position detection device for a locking device.

(Embodiment) An embodiment of the present invention will be described with reference to the drawings. Reference numeral 1 denotes a lock body made of synthetic resin, and a recess 2 is formed on the front side of the lock body. The latch 3 and ratchet 5 are fixed in the &2 by a shaft 4 and a shaft 6, respectively.

The latch 3 is always biased in the clockwise direction by a spring 7 in FIG. 8 is a striker fixed to the vehicle body side, and 9 is a guide groove formed in the synthetic resin lock body l into which the striker 8 enters.

The outer periphery of the latch 3 includes an engagement groove 10 that engages with the striker 8, a half latch engagement portion that engages and disengages the claw portion 11 of the ratchet 5, and a full latch engagement portion 1.
form 3. The full latch engagement portion 13 is connected to the engagement groove 1.
It can also be used as 0.

The latch 3 is located above the guide groove 9 of the four parts 2.
The cam body 14 is fixed by a shaft 15 at a position where it does not overlap with the cam body 14. Although not shown, the cam body 14 is biased by a spring that acts in a counterclockwise direction.

A protrusion 17 is formed on the rotating portion of the cam body 14, and the protrusion 1
7 is brought into contact with a cam surface 16 formed on the outer peripheral surface of the latch 3.

The cam surface 16 has a maximum radius part A and a minimum radius part C centered on the shaft 4, and the diameter gradually changes between these parts. As shown in FIG. 1, in the open door state where the striker 8 and the latch 3 are not engaged, the projection 17 is in contact with the maximum radius portion A, and as shown in FIG. In the ajar state where the ratchet 5 is engaged with the engagement member, the rotation of the latch 3 abuts the intermediate radius portion B between the maximum radius portion A and the minimum radius portion C, and as shown in Fig. 3, the latch 3 is fully latched. In the closed door state in which the ratchet 5 is engaged with the engaging portion 13, the ratchet 5 is configured to abut against the minimum radius portion C.

The shape of the cam surface 16 is not limited to the shape described above; the cam body 14 only needs to move to three different positions depending on the opening/closing state of the door. It can also be implemented as a radius.

A magnet 21 is attached to the cam body 14. Cam body 14
The magnet 21 is fixed by forming a recess in the magnet 21 or by fixing it with an adhesive. Further, the position may be finely adjusted. The magnet 21 naturally has a south pole 18 and a north pole 19, but since the present invention uses not only the south pole 18 and the north pole 19 but also a non-polar magnet, two magnets 21 may be used. That is, the S pole 18 and the N pole 19 are sometimes installed without a gap as shown in Figures 1 to 4, and sometimes they are installed with a gap intentionally provided between the S pole 18 and the N pole 19 as shown in Figure 5. .

At a position outside the movement locus of the magnet 21 of the cam body 14,
The Hall IC 20 is arranged with a slight gap. The Hall IC 20 has a function of changing its output by the magnetic force of the magnet 21, and the one of this embodiment has a 5fi1
It outputs different outputs in three stages depending on when it detects 8, when it detects N pole 19, and when it detects non-pole.
Depending on the detection state, it not only detects the latch position, but also
It will also be used for control signals for interior lights, seat belts, etc.

That is, as shown in FIG. 1, when the door is open, the cam body 1
4 rotates to the upper position, the Hall IC 20 detects the N pole 19 and outputs a "positive" signal, and in the bar flusher 2 position shown in Fig. 2, the cam body 14 rotates to the intermediate position, IC
20 detects the S pole 18 and outputs a "negative" signal, and in the fully latched state shown in FIG. 3, the cam body 14 rotates to the lower position, and the Hall IC 20 detects no pole and outputs a "0" signal. .

(effect) Next, we will discuss the effect.

When the door is open, as shown in FIG. 1, the latch 3 and the striker 8 are not engaged, and the latch 3 is biased clockwise by the spring 7, so the maximum radius portion A of the cam surface 16 is aligned with the cam. The cam body 14 comes into contact with the protrusion 17 of the body 14 and rotates to the upper position. Therefore, the Hall IC 20 faces the N-pole 19 and outputs a "positive" signal upon detection of the N-pole 19.

Next, when the door is closed, the striker 8 enters into the guide groove 9 and engages with the engagement groove 10 of the latch 3, causing the latch 3 to rotate counterclockwise against the spring 7 and the pawl of the ratchet 5. When the half-door (half-latch) state shown in FIG. 2 is reached, in which the portion 11 engages with the half-latch holding portion, the protrusion 17 of the cam body 14 comes into contact with the intermediate radius portion B of the cam surface 16, so that the cam body I4 rotates to an intermediate position, and the Hall IC 2G faces the S pole 18. Therefore, the Hall IC 20 outputs a "negative" signal upon detection of the S pole 18.

However, when the door is completely closed, the pawl 1 of the ratchet 5
1 engages with the full latch retaining part 13, resulting in the closed door (full latch) state shown in FIG. detects non-polarity and outputs the rQJ signal.

As described above, the Hall IC 20 is in the door state.

In other words, since the output changes in three stages depending on the position of the latch 3, the door open state, half latch state, and full latch state can be reliably detected, and based on this, the interior light and
Seat belts, etc. can be controlled reliably.

Therefore, the above-mentioned effect can be achieved by using one magnet 21, and the S-pole ratio and the N-pole! 9 is installed without any gaps as shown in Figures 1 to 4, but using two magnets 21 as shown in Figure 5,
If a gap is purposely provided between 5aita and the north pole 19, the intermediate door ajar state will be detected by non-pole detection. Therefore, mutual interference between the S pole audience and the N pole 19 is eliminated, and a margin can be provided for mounting accuracy.

In addition, since the Hall IC 20 and the cam body 14 are provided above the guide groove 9 of the recess 2 at a position where they do not overlap with the latch 3, they are not affected by rainwater or dust that enters through the guide groove 9.
Good performance can be maintained for a long time.

(Effects) Conventionally, a latch that rotates by engaging with a striker that is mounted on a lock body side and is fixed on the vehicle body side, a ratchet that is shaft mounted on the lock body side and prevents the latch from reversing, and the lock A cam body that is mounted on the body side and rotates as the latch rotates, and a contact mechanism provided on the cam body, allows the door to be opened, ajar (half-latch), and closed (full-latch). A vehicle locking device configured to be able to detect is well known.

The above-mentioned known device is configured to be able to detect the door open state, door ajar state, and door closed state using a contact mechanism provided on the cam body, so it is difficult to synchronize the timing and requires high precision in the assembly work. There were issues with limited sustainability due to deterioration over time.

However, the present invention has a latch 3 that rotates by engaging with a striker 8 that is pivoted on the low and cupboard I side and fixed to the vehicle body, and a latch 3 that is pivoted on the lock body I side that prevents the latch 3 from reversing. A ratchet 5 for preventing, a cam body 14 which is mounted on the lock body 1 side and is rotationally displaced by the rotation of the latch 3, a magnet 21 provided on the cam body 14, and a magnet 21 fixed to the lock body 1 side or A Hall IC 2 operated by the magnet 21 whose mounting position can be adjusted.
Since the vehicle locking device latch position detection device consists of
Interior lights, seatbelts, etc. can be controlled reliably.

Further, the magnet 21 has a configuration in which the S pole 18 and the N pole 19 are arranged side by side with a space between them, or they are arranged side by side without any space between them, and the relative position of the Hall IC 20 and the S pole 18 and the N pole 19 is determined. Since the latch position detection device of the vehicle locking device is configured to detect the door open state, ajar state, and closed door state by detecting the S pole 18 and the N pole 19 as well as non-pole detection, Based on the stage outputs, it is possible to reliably detect the door open state, door ajar state, and door closed state, and based on this, it is possible to reliably control the interior lights, seat belts, etc.

The vehicle is characterized in that the Hall IC 20 is located above the guide groove 9 of the striker 8 formed in the lock body l and at an upper position where dust from the guide groove 9 does not reach. Since the latch position detection device of the locking device is used, good performance can be maintained for a long time without being affected by rainwater or dust that enters through the guide groove 9.

[Brief explanation of drawings]

Figure 1 is an overall longitudinal sectional front view, Figure 2 is an explanatory diagram of the half-latched state, Figure 3 is an explanatory diagram of the fully latched state, and Figure 4 is a diagram of the cam body when the S and N poles are installed without any gaps. Plan view,
FIG. 5 is a plan view of a cam body with a gap provided between the S and N poles. Explanation of symbols 1... Lock body, 2... Recess, 3... Latch, 4... Shaft, 5... Ratchet, 6... Shaft, 7...
... Spring, 8... Striker, 9... Guide groove, lO
...Engagement groove, 11...Claw portion, 12...Half latch engagement portion,! 3...Full latch engagement part, 14...Cam body, 15...shaft, 16...cam surface, 17...protrusion, 18...S pole, 19...N pole, redundant ...Hall IC121...Magnet, A...Maximum radius part, B...
Intermediate radius portion, C: minimum radius portion. Table procedure auxiliary device (spontaneous) Date of 1990 1゜Indication of the case Patent application No. 2-20139 2゜3゜Name of the invention Person who corrects the latch position detection device of a vehicle locking device Relationship to the case Patent applicant Address: 2-1-1 Nihonbashi Muromachi, Chuo-ku, Tokyo (618) Mitsui Kinzoku Mining Co., Ltd. Representative: Majima Fair Affairs Department 4゜ Representative Address: 6-6 Nishi-Shinjuku, Shinjuku-ku, Tokyo 160
No. 3 Shinjuku Kokusai Building New Wing 9th Floor Diagram

Claims (3)

[Claims] (1) A latch 3 that is pivoted on the lock body 1 side and rotates by engaging with a striker 8 that is fixed on the vehicle body side, and a ratchet 5 that is pivoted on the lock body 1 side and prevents the latch 3 from reversing. and a cam body 14 that is pivotally mounted on the lock body 1 side and is rotationally displaced by rotation of the latch 3;
A latch position detection device for a vehicle locking device comprising a magnet 21 provided on the cam body 14, and a Hall IC 20 that is fixed or adjustable in attachment position on the lock body 1 side and is operated by the magnet 21. (2) In claim (1), the magnet 21 has a configuration in which the S pole 18 and the N pole 19 are arranged side by side with a space between them, or are arranged side by side with no space between them, and the Hall IC 20 and the A latch for a vehicle locking device configured such that the relative position of the S pole 18 and the N pole 19 is such that the door open state, door ajar state, and door closed state can be detected by detecting the S pole 18 and the N pole 19 and non-pole detection. Position sensing device. (3) In the item of claim (1), the Hall IC 20 is located above the guide groove 9 of the striker 8 formed in the lock body 1 as a whole and is further away from the guide groove 9. A latch position detection device for a vehicle locking device characterized by being located at an upper position where dust cannot reach.