JPH03140578A - Latch position detector for lock device for vehicle - Google Patents

Abstract

PURPOSE:To reduce signal wires by connecting a half latch detecting section and a full latch detecting section to a control section in parallel with each other, and by providing the control section, with an access mechanism for calling both the detecting sections separately. CONSTITUTION:When a door is to be opened where latch and striker do not engage with each other, by the respective magnetic force detecting sections 20, 21 of a half latch Hall IC 18 and a full latch Hall IC 19, the magnetic forces of respective magnets set a lower side cover are detected. Then, by a control section 26, the integrated circuit 22 of the IC 18 is accessed via a signal wire 25 and a terminal 41, and the integrated circuit 23 of the IC 19 is accessed via the signal wire 25 and a terminal 42, respectively in order. Besides, by the circuits 22, 23, that the detecting sections 20, 21 are in a detecting state is fed as a data to the control section 26 via the signal wire 25, and by the control section 26, it is detected that the door is in a released state.

Description

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

(Prior Art) Conventionally, a latch that engages with a striker fixed to a vehicle body,
A ratchet that prevents the latch from reversing, and a detection section that detects a half-latched state and a full-latched state between the ratchet and the latch, wherein the detection section includes a fixed contact made of a printed circuit board and a detection section that detects the rotation of the latch. A vehicle locking device comprising a movable contact that moves in conjunction with the movement of the vehicle is disclosed in Japanese Patent Application Laid-Open No. 63-206582.

(Problems to be Solved by the Invention) The detection unit of the known example is provided with at least three types of contacts: a fixed contact for half latch detection, a fixed contact for full latch detection, and a movable contact for grounding. from,
It is necessary to provide the required number of cords from each contact point to the control mechanism on the vehicle body side. However, in addition to the above, vehicle doors also have various sensor signal lines and various motors (actuators).
Since there are as many as several dozen power lines and the like, it is not a desirable configuration to add a large number of cords for the contacts in addition to these.

Therefore, even if a contact mechanism is added, a device with as few signal lines as possible is desired.

(Object of the Invention) The present invention provides a contact mechanism in which the signal line can be made of one tree,
This minimizes the number of signal lines from the door to the vehicle body control mechanism.

(Means for solving problems) Therefore, the present invention fixes the striker to the vehicle body.

On the door side, there are provided a latch that engages with the striker to rotate, a ratchet that prevents the latch from reversing, and a half-latch detector and a full-latch detector that respectively detect a half-latched state and a full-latched state between the ratchet and the latch. and a control section connected to both the detection sections on the vehicle body side, wherein both the detection sections are connected in parallel to the control section, and the control section has both the detection sections The detection device is a latch position in a vehicle locking device equipped with an access mechanism for individually calling the sections.

(¥ Flow Side) An embodiment of the present invention will be described with reference to the drawings. Reference numeral 1 indicates a synthetic resin body of a locking device attached to a door of a vehicle, and 2 indicates a striker fixed to the vehicle body side. A housing recess 3 is formed in the front side of the body l, and a latch 4 that engages with the striker 2 and a ratchet 5 that prevents the latch 4 from being reversed are mounted in the housing recess 3 by shafts 6.7, respectively. Lock the shaft. Reference numeral 8 indicates a striker entry groove, 9 indicates a striker engagement groove, 10 indicates a half latch engagement groove, and 11 indicates a full latch engagement groove.0 Although not shown, a cover plate covering the recess 3 is provided on the front side of the body 1. , a back plate is provided on the rear side.

A detecting part mounting recess is formed in the housing recess 3 of the synthetic resin body 1, and a detecting part 13 for detecting a half-latched state and a full-latched state of the ratchet 5 and the latch 4 is formed in the detecting part mounting recess. bury it. The detection unit 13 has an upper cover 14 and a lower cover 15, as shown in FIG. The upper cover 14 and lower cover 15 are sealed together by means such as ultrasonic welding.

The lower cover 15 is provided with magnets 16, 17 at predetermined intervals in the direction of rotation of the latch 4, and the magnets 16, 17 are provided inside the upper cover 14. 7 and gap 2
A half-latch hole 1111:18 and a full-latch hole IC 19 are provided which face each other.

The Hall ICl 3.19 is composed of a magnetic force detection unit 21 for detecting the magnetic force of the magnet 16.17, and an integrated circuit η,n each having an individual address number.

The integrated circuit η, n has a ground (earth) side end,
It has a mallet and signal terminals 41 and 42 that serve as address, data, and power supply terminals.

The ground side terminal is connected to the ground wire 24,
The signal terminals 41 and C are connected to the signal line drawing.

The Hall ICs 18 and 19 are connected in parallel to a control section provided at a desired position. The controller has an access mechanism and accesses the hole I at a speed of about 10 times per second.
The integrated circuit η of C1B and the integrated circuit n of the Hall IC 19
As a result, the integrated circuit η and B send the magnetic force detection state of the magnetic force detection unit 21 as data to the control unit. 27 is a contact pin.

It is a rotating body having a fan-shaped rotating piece 3.

The rotating shaft is formed in the shape of a hollow sleeve, and the shaft 6 is loosely inserted into the rotating shaft.

The rotating shaft I is a zero-rotating shaft that is fixed in the shaft hole 31 of the upper cover 14 and the shaft hole g of the lower cover 15. A connecting pin U protruding toward the front side is formed at that rotating end of the intermediate lever, and the connecting pin U is engaged with the latch 4. Therefore, the latch 4 engages with the striker 2. When it rotates, the rotating body rotates via the intermediate lever.

The rotating piece 3 is provided with a magnetic force shielding plate 5. The magnetic force shielding plate does not shield the magnetic force of the magnets 16 and 17 when the latch 4 and the striker 2 are not engaged, and the ratchet 5 engages with the half-latch retaining groove lO of the latch 4. In the half-latch state, the half-latch hole [18 and magnet 1
In the fully latched state in which the ratchet 5 engages with the full latch engagement groove 11 of the latch 4, the magnet 16 faces between the full latch Hall IC 19 and the magnet 17 and shields only the magnetic force of the magnet 16. 16. Shields the magnetic force of 17.

I is a spring that biases the rotating body n to rotate in the opposite direction of the arrow A (Figs. 1 and 4); 6 is engaged with the inner edge of the lower cover 15. The spring also serves as a return spring for the latch 4. 37 is an outlet for the ground wire 24 and the signal line, and the outlet is closed with a rubber seal or the like. 38 is a through hole formed in the body 1, into which the outlet g is inserted.

46 is a shaft hole for the shaft 6 formed in the body 1, and 47 is the coaxial hole 7.
This is a shaft hole for use.

(effect) Next, we will discuss the effect.

The present invention has the above configuration, and when the door is opened, the latch 4 and the rotary body n are rotated back in the opposite direction of the arrow A by the spring I, so that the magnetic force detection part of the hole 1018.
1 detects the magnetic force of magnets 16 and 17. Therefore, the control unit 5 controls the Hall IC at a speed of about 10 times per second.
When the integrated circuit η of the hole 1019 is sequentially accessed via the signal line 6 and the terminal 41, and the integrated circuit n of the hole 1019 is accessed via the signal line and the terminal C, the integrated circuit η and the integrated circuit B are accessed from the magnetic force detection unit. The fact that the door 21 is in the detection state is sent as data to the control section 9 via the signal line 3, whereby the control section 9 detects that the door is open.

Next, at the beginning of closing the door, the striker 2 enters the striker entry groove 8 of the body 1, engages with the striker engagement groove 9 of the latch 4, and rotates the latch 4 in the direction of arrow A. The rotating body n is similarly rotated via the intermediate lever O. When the latch 4 rotates and enters the half-latched state in which the ratchet 5 engages with the half-latch engagement groove 10, the magnetic force shielding plate with the rotating piece faces between the hole ICl3 and the magnet 16, and the magnet 16 magnetic force to the Hall ICl3 integrated circuit η
to shield from. Therefore, in the barfler 7,000 state,
In response to an access from the control unit, the integrated circuit η sends out the non-detected state as data, and the integrated circuit n sends out the detected state as data, so the control unit 1 detects the half-latch state.

Next, when the door is fully closed and the ratchet 5 engages with the full latch engagement groove 11, the magnetic force shielding plate rotates between the Hall IC 19 and the magnet 17, and the magnetic force of the magnet 16, 17 is the Hall ICl3゜19 integrated circuit η
, 23, against access by the controller,
Since the integrated circuit η sends out the non-detected state as data, and the integrated circuit n also sends out the non-detected state as data, the controller 1 detects the full latch state.

As described above, the control signal from the detection section 13 to the control section 13 can be transmitted by the signal line δ, which is used for addresses, data, and power supply, so if the ground line 24 is used as a common line, one signal This becomes possible by adding the line δ.

(Effect) Conventionally, a latch that engages with a striker fixed to the vehicle body,
A ratchet that prevents the latch from reversing, and a detection section that detects a half-latched state and a full-latched state between the ratchet and the latch, the detection section having a fixed contact made of a printed board and a two-chip A vehicle locking device comprising a movable contact that is displaced in conjunction with the rotation of the vehicle is disclosed in Japanese Patent Application Laid-Open No. 63-206582. Since at least three types of contacts are provided: a fixed contact for full latch detection and a movable contact for grounding, it is necessary to provide the required number of cords from each contact to the control mechanism on the vehicle body side. However, as mentioned above, in addition to the above, the door of a vehicle is provided with signal lines for various sensors, power lines for various motors, etc., as many as several tens of wires. It is not a desirable configuration to add a large number of codes for this purpose.

However, in the present invention, a striker is fixed to the vehicle body, a latch on the door side that engages with the striker and rotates, a ratchet that prevents the latch from reversing, and a half-latched state and a full-latched state between the ratchet and the latch. A half-latch detection section and a full-latch detection section are provided to respectively detect the
In a vehicle lock device in which a control unit connected to both of the detection units is provided on the vehicle body side, both of the detection units are connected in parallel to the control unit, and the control unit includes both of the detection units. Since this is a latch position detection device in a vehicle locking device equipped with an access mechanism that can be called individually, the control signal from detection section B to control section 9 is a signal that is used for address, data, and power. Since the wire δ can suffice, if the ground line 24 is made a common line, it is possible to carry out the process with the addition of one signal line.

[Brief explanation of the drawing]

Fig. 1 is a partially cross-sectional plan view of the synthetic resin body, Fig. 2 is a partially cross-sectional plan view with latches, ratchets, etc. removed from the state shown in Fig. 1, and Fig. 3 is A-A in Fig. 2. 4 is an exploded perspective view of the detection section, and FIG. 5 is a wiring diagram of the Hall IC and the control section. Explanation of symbols 1...Synthetic resin body, 2...Striker, 3.
... Accommodation recess, 4... Latch, 5... Ratchet,
6... shaft, 7... shaft, 8... striker entry groove,
9... Striker engagement groove, 10... Half latch engagement groove, 11... Fuller chi engagement groove,... Detection part mounting recess, 13... Detection part, 14... upper cover,
15... Lower cover 16... Magnet, 17... Magnet, Old... Hall IC119... Hall IC, 20...
...Magnetic force detection unit, 21...Magnetic force detection unit, η...Integrated circuit, n...Integrated circuit, 24...Ground wire, b...
・Signal line, 3...control unit, n...contact bin,
n... Rotating body, 29... Rotating piece, (9)... Rotating shaft, 31... Shaft hole, support... Shaft hole, *... Intermediate lever, 34... Connection Pin, 35...Magnetic shielding plate, stamen.
...Spring, g...Outlet, (...Through hole, A, 40.
...Earth side terminal, child, 43...one end, a...locking piece, 41.42...
・Signal end 45...Other end, mallet, 47...Shaft hole.

Claims (1)

[Claims] A striker is fixed to the vehicle body, and on the door side there are provided a latch that engages with the striker and rotates, a ratchet that prevents the latch from reversing, and a half latch that detects the half-latched state and full-latched state of the ratchet and the latch, respectively. In a vehicle lock device including a detection section and a full latch detection section, and a control section connected to both detection sections on the vehicle body side, both of the detection sections are connected in parallel to the control section,
A latch position detection device in a vehicle locking device, wherein the control section includes an access mechanism that calls both the detection sections individually.