JPH01151675A - Door locking device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a door lock device, and in particular, in an opening/closing body such as a vehicle door, it reduces the operating force required to obtain a fully latched state and locks the door after fully latched. This invention relates to a locking device for automatically performing a complete closing operation.

<Prior Art> In order to prevent rainwater from entering the vehicle interior, a sealing member called a weather strip is provided in the gap between the door and the vehicle body. Further enhances the sealing effect,
In order to reduce wind noise and wind leakage noise, the pressure reaction force of this weather strip tends to be increased, which may necessitate an increase in the force required to close the door, or reduce the noise and interior noise caused by sudden door closing operations. This causes problems such as excessive changes in air pressure.

In order to eliminate this inconvenience, the striker is configured to be movable along the opening/closing direction of the door, and
A door lock device is provided in which a latch and a striker are engaged at a position where no strip pressure reaction force is applied, and then the striker is moved in the direction of closing the door by a signal from a door switch that mainly causes an interior light to blink. Jitsukai 1986-
This is proposed in Japanese Patent No. 144173.

<Problems to be Solved by the Invention> However, when the striker is moved at the door switch signal as in the prior art described above,
- Since the door latch that engages with the striker has two stages, half latch and full latch, the door switch may operate in the half latch state, which may cause the striker to move in the half latch state. Conceivable.

In view of such disadvantages of the prior art, the main object of the present invention is to provide an improved door lock that allows the striker to drive the door to close after the latch and the striker are securely engaged and the striker is in a fully latched state. The goal is to provide equipment.

<Means for Solving the Problems> According to the present invention, the present invention provides a latch device and a striker that can be engaged with each other before an opening/closing object such as a door is completely closed, and a latch device and a striker that can be engaged with each other before an opening/closing object such as a door is completely closed. A locking device comprising: a drive device for moving at least one of the opening/closing bodies along the opening/closing direction of the opening/closing body, the locking device having means for detecting a fully engaged state of the latch device and the striker; This is achieved by providing a door lock device characterized in that the drive device is controlled in accordance with a signal.

In this way, since the drive device is activated only when the door is fully latched, it is possible to ensure that the door is completely closed, thereby eliminating the risk of the driver driving without noticing that the door is ajar. can be resolved.

<Embodiments> Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 shows the main parts of a vehicle door l to which a door lock device according to the present invention is applied, and shows a door inner panel 1.
A ratchet type latch mechanism 4 is attached to a space 3 inside the rear end surface 2 of the door, which is curved with a toward the door outer panel 1b. A striker drive device 8 is attached to a space 7 inside the front end surface 6 of the center pillar or rear pillar. In addition, the door rear end surface 2
A weather strip 9 is attached to the corner of the body outer panel 5, and when the door is closed, this weather strip 9 is attached to the body outer panel 5.
It is in close contact with the corresponding surface of a to obtain the required sealing action.

The striker drive device 8 includes a U-shaped striker 10 protruding from the front end surface 6 of the body outer panel 5a;
It consists of a cam mechanism 11 for moving the striker 10 along the opening/closing direction of the door 1, a speed reducer 12 and a DC motor 13 for rotationally driving the cam mechanism 11, and the casing 14 of the cam mechanism 11 is connected to the vehicle body. It is fixed to 5.

As clearly shown in FIG. 2, the casing 14 of the cam mechanism 11 is connected to the front end surface of the body outer panel 5a via a mount bushing 15 made of an elastomer material.
It is screwed to the part.

Thereby, the operation noise of the striker drive device 8 can be effectively blocked from being transmitted to the vehicle body 5.

A guide groove 16 extending in the opening/closing direction of the door 1 is recessed in the attachment surface of the casing 14 to the vehicle body 5 . A slide member 17 is slidably mounted in the guide groove 16, and an outer surface 17a of the slide member 17 is exposed through an opening 18 formed in the front end surface 6. A base plate 19 on which the striker 10 described above is fixed is screwed to the outer surface 17a.

The base plate 19 is slidably displaced together with the slide member 17, and is formed so as to overlap the opening 18 over the entire sliding range. A self-lubricating sealing member 2 is provided on the inner peripheral edge of the opening 18 and is sandwiched between the slide member 17 and the base plate 19.
0 is interposed therebetween, thereby reducing the transmission of operating noise to the vehicle body 5, and at the same time preventing moisture from entering the interior of the vehicle body 5 through these sliding surfaces.

A boss 21 is provided protruding from the inner surface of the slide member 17. The boss 21 projects into an elongated hole 22 formed at the bottom of the guide groove 16 of the casing 14 in parallel with the guide groove 16 . Further, on the inner surface of the casing 14, a guide recess 23 is formed along the same direction as the guide groove 16 and the elongated hole 22.
is recessed, and a cam follower 24 is slidably mounted thereon.

The cam follower 24 passes through the elongated hole 22 and enters the guide recess 2.
3 is fixed to the end surface of the boss 21 exposed on the inner surface of the slide member 17 using a countersunk bolt 25. As a result, the slide member 17 and
The cam followers 24 are mutually prevented from being removed from the casing 14 and are movable within the range defined by the elongated hole 22.

As shown in FIGS. 1 and 3, at both ends of the inner surface of the cam follower 24 in the sliding direction, a pair of inner walls 26a and 26b are raised in a direction perpendicular to the sliding direction. A circular eccentric cam 27 is provided inscribed in these stomach inner walls 26a and 26b. The outer circumferential surface of the eccentric cam 27 is coated with a coating 27a made of a self-lubricating resin material, so that the cam follower 24 smoothly slides into contact with the stomach inner walls 26a and 26b.

A speed reducer 12 is fixed to the inner end surface of the casing 14 .

As shown in FIG. 4, the reducer 12 includes an eccentric cam 2
7 is a camshaft 28 keyed to its shaft end, and a camshaft 2
A final stage gear 29 is integrally fixed to the final stage gear 29, a plurality of transmission gear groups 30 are provided to mesh with the final stage gear 29, and the camshaft 28 is driven through these transmission gear groups 30. It consists of a pinion gear 31 fixed to the shaft end of the DC motor 13, and is configured to appropriately reduce the rotational force of the motor 13 and then transmit it to the camshaft 28.

The final stage gear 29 is provided with an arcuate slot 32 that is concentric with the camshaft 28 and extends at an angle of approximately 180 degrees. By providing this, the rotation angle of the two final stage gears is defined. A coating 32a made of a resin material is also applied to the inner peripheral edge of the slot 32, thereby preventing the generation of metallic sounds.

Next, the latch mechanism 4 provided on the door 1 side will be explained.

The latch machine [4 is basically of a known type, as shown in FIGS. , a latch member 36 that is rotatable by being pressed by the striker 10 and is biased to rotate in the return direction by a spring means (not shown), and a pair of ratchet pawls 37a provided at appropriate positions on the outer periphery of the latch member 36. a ratchet pawl 38 that engages with the latch member 37b to prevent the latch member 36 from returning;
is pivoted.

A notch 39 that engages with the striker 10 is formed at a suitable location on the outer periphery of the latch member 36. Also, the ratchet ball 38 is moved by the spring 40 to the ratchet pawls 37a and 37.
b, and is constantly biased in the direction of engagement with the guide groove 34.
The rotation of the latch member 36 in the direction in which the striker 10 enters is not hindered, but in the direction in which the striker 10 leaves, the latch member 36 is engaged with either one of the ratchet pawls 37a and 37b to prevent the rotation of the latch member 36. Thus, the engagement between the striker 10 and the latch member 36 is maintained.

Furthermore, a latch switch 41 for detecting the fully latched state of the latch member 36 is provided at a position facing the peripheral edge of the latch member 36.

Next, the control circuit of the above-described apparatus of the present invention will be explained.

As shown in FIG. 8, the control circuit 50 includes a pulse rising edge detection circuit 53 and a pulse falling edge detection circuit 53, which are connected in parallel to the anti-ground terminal of the contact 41a of the latch switch 41 via a buffer 51 and a chattering absorption circuit 52. An edge detection circuit 54 is provided.

The outputs of both edge detection circuits 53 and 54 are both branched into two directions, one of which is connected to the inputs provided to two one-shot pulse generation circuits 55 and 56, respectively, and the other of each are connected to one of the two inputs of the two AND circuits 57 and 58, respectively.

The outputs of both one-shot pulse generation circuits 55 and 56 are respectively connected to two inputs of a common AND circuit 59. The output of this AND circuit 59 is connected to a set input 60a of a flip-flop circuit 60.

The output of the flip-flop circuit 60 is branched into two directions, and is connected to the other of the inputs of the two AND circuits 57 and 58, respectively.

The outputs of these AND circuits 57 and 58 are connected to the ground ends of coils 65 and 66 of two electromagnetic relays 63 and 64 via corresponding knot circuits 61 and 62, respectively. Further, the other ends of these coils 65 and 66 are respectively connected to the anode of an on-vehicle battery 67.

The electromagnetic relays 63 and 64 described above have common terminals 63c and
64c, normally open terminals 63a and 64a that close between the common terminals 63c and 64c when the coil is energized, and normally closed terminals 63b and 64b that similarly close between the common terminals 63c and 64c when the coil is demagnetized. Each has its own.

Between both common terminals 63c and 64c, both poles of a DC motor 13 capable of forward and reverse rotation are connected, and the normally open terminal 6
3a and 64a and normally closed terminals 63b and 6
4b are connected to each other. Further, the normally open terminal 63a of the first electromagnetic relay 63 is connected to the anode of the battery 67 via a positive thermistor 69, and the normally closed terminal 64b of the second electromagnetic relay 64 is connected to the resistor 7.
0 to the ground side, that is, the cathode of the vehicle battery 67.

A motor current detection circuit 71 is provided in the line of the motor 13 to measure the potential difference across the resistor 70. This motor current detection circuit 71 is designed to output a signal according to the ratio value between a reference voltage set internally and the voltage around the resistor 70, and this output is transmitted to the reset manual 60b of the flip-flop circuit 60. It is connected to the.

These control circuits 50 are supplied with power from an on-vehicle battery 67 via a stabilized power supply circuit 72 .

Next, the operation procedure of the above embodiment will be explained.

First, when the door is completely closed, the latch switch 41, which detects the fully latched state of the latch member 36, is not pushed in, as shown in FIG. - side, latch switch 4
1 is a normally closed contact 41 for the control circuit 50.
Since the contact point a is connected and the contact is open in this state, a high level signal (hereinafter referred to as an H signal) is output from the buffer 51. In addition, in the initial state, the coils 65 and 66 of both electromagnetic relays 63 and 64 are both in a demagnetized state, and the connection between both poles of the vehicle battery 67 and both poles of the electric motor 13 is severed. is in a stopped state. On the other hand, in this state, the eccentric cam 27 and the final stage gear 29 are in the rotational positions shown in FIGS. 3 and 4, and the striker 10 is located inside the vehicle body 5 as shown by the solid line in FIG.

Next, when the door handle (not shown) is operated to disengage the ratchet pawl 38 and the ratchet claw 37b on the full latch side, the latch member 36 rotates back and the contact 41a of the latch switch 41 closes. As a result, when the output to both edge detection circuits 53 and 54 is inverted to a low level signal (hereinafter referred to as a low signal), the pulse rising edge detection circuit 53 outputs an L signal, and the pulse falling edge detection circuit 54 outputs an H signal. .

By the way, both one-shot pulse generation circuits 55 and 56 normally output an H signal, and only when an H signal is input, output an L signal for a certain period of time. Therefore, in this case, the one-shot pulse generation circuit 55 connected to the pulse rising edge detection circuit 53 outputs an H signal, while the one-shot pulse generation circuit 55 connected to the pulse falling edge detection circuit 54 outputs an H signal. Pulse generation circuit 56
Since it temporarily outputs an L signal, the AND circuit 59 for the set input 60a of the flip-flop circuit 60
The output temporarily becomes an L signal.

The flip-flop circuit 60 is set/reset manually 6
It is designed to self-hold the output corresponding to each of 0a and 60b, and when an L signal is input to the set input 60a, it outputs a to-I signal, and when an L signal is input to the reset input 60b, it outputs an L signal. It is being done. Therefore, flip-flop times in the above situation! ! Ft60
outputs an H signal to the two AND circuits 57 and 58.

In this state, since the input of the AND circuit 57 corresponding to the first electromagnetic relay 63 becomes both L and H signals, the output of the corresponding NOT circuit 61 becomes an H signal, and the first electromagnetic The coil 65 of the relay 63 is not energized, and therefore, the first electromagnetic relay 63 is connected between the common terminal 63c and the normally closed terminal 63b.

At the same time, the re-input of the AND circuit 58 on the second electromagnetic relay 64 side becomes the I signal, so the output of the corresponding NOT circuit 62 becomes L level, and the coil 66 of the second electromagnetic relay 64 is excited. As a result, the common terminal 64c on the second electromagnetic relay 64 side and the normally open terminal 64a are connected, and a current flows in the direction of normal rotation of the motor 13.

As the electric motor 13 rotates in the normal direction, the eccentric cam 27 rotates clockwise in FIG. 3 around the camshaft 28 of the final stage gear 29 that meshes with the transmission gear group 30, and moves the cam follower 24 to the left. let As the cam follower 24 moves to the left, the slide member 17 and the striker 10 move toward the guide groove 1.
6 to the forward position outside the vehicle interior (imaginary line in Figure 1). At this time, since the rotation angle of the final stage gear 29 is defined by the slot 32 and the pin 33, when the eccentric cam 27 rotates by a predetermined angle, the electric motor 1
3 is mechanically stopped and an overload current flows through the motor 13.

On the other hand, the motor current detection circuit 71 constantly detects the potential difference across the resistor 70 connected in series to the motor 13.
When this value exceeds the reference voltage, the flip-flop circuit 6
An L signal is output for the reset human power 60b of 0. Then, the output of the flip-flop circuit 60 is inverted to an L signal, and as a result, both AND circuits B57 and 58 output an L signal, and the coil 66 of the second electromagnetic relay 64 is demagnetized to connect the common terminal 64c and the normally open terminal. 64a is opened, the electric motor 13 stops, and the striker 10 is held in the forward position.

When the door 1 is closed from this state, the latch member 36 rotates while the striker 10 engages with the notch 39 as shown in FIGS. 5 to 7. At this time, since the striker 10 is located on the outside of the vehicle body after the above-described process, the fully latched state shown in FIG. 7 is achieved before the weather strip 9 provided on the door 1 side is pressed and deformed. In this state, although it is fully latched, it appears to be in a so-called ajar state, and the weather strip 9
Since this is before a large pressing reaction force acts, the fully latched state can be achieved with a relatively small closing operation force.

Note that a cushion member 43 is provided at the end of the guide groove 34 of the latch mechanism 4 to suppress the generation of metallic noise by hitting the striker 10, but as described above, the striker 10 is located at the outer position (first If the door 1 is strongly closed in the state shown in the imaginary line in the figure, the amount of deformation of the cushion member 43 will be excessive, and there is a possibility that excessive stress will be applied to the gauging 35 of the latch mechanism 4. Therefore, in this embodiment, in order to hit the opening end surface of the guide groove 34 of the casing 35,
- A cushion member 44 is provided on the base plate 19 of the striker 10 to avoid such inconvenience.

As described above, when the latch member 36 rotates to the full latch position shown in FIG. 7, the latch switch 41 is pushed in and the contact 41a opens, generating a full latch position detection signal. This signal causes both edge detection circuits 53.
54 is inverted to an H signal, and contrary to the above, pulse rising edge detection circuit #153 outputs an H signal, and pulse falling edge detection circuit B54 outputs an L signal. As a result, only the one-shot pulse generation circuit 55 connected to the pulse rising edge detection circuit 53 temporarily outputs an L signal, and the flip-flop circuit 60 is manually set 60.
The outputs of the five AND circuits for a temporarily become L signals, and the flip-flop circuit 60 again outputs H signals to the two AND circuits 57 and 58.

At this time, since the AND circuit 58 corresponding to the second electromagnetic relay 64 receives both L and H signals, the NOT circuit 58
The output of the second electromagnetic relay 64 becomes an H signal, and the coil 66 of the second electromagnetic relay 64 is not energized. At the same time, both inputs of the AND circuit 57 on the first electromagnetic relay 63 side become an H signal, so the output of the corresponding NOT circuit 61 becomes an L level, the coil 65 of the first electromagnetic relay 63 is energized, and the first The contact point of the normally open terminal 63a on the electromagnetic relay 63 side closes, and a current flows in the direction to reverse the direction of the DC motor 13.

As the electric motor 13 rotates in reverse, the eccentric cam 27 rotates to the position shown in FIG. The door is slid and the completely closed state shown in FIG. 1 is realized again.

When the eccentric cam 27 rotates by a predetermined angle, the electric motor 13 is mechanically stopped in the same manner as described above, and an overload current flows through the electric motor 13. Striker 1 depending on the current value at this time.
0 has moved by a predetermined amount, and the power supply to the electric motor 13 is cut off.

Regarding the regulation of the movement range of the striker 10, not only the above-mentioned rotation angle range of the final stage gear 29 but also the cam 2
The rotation angle of 7 or the sliding range of the slide member 17 may be determined mechanically. Furthermore, regarding motor control, in addition to the current value control described above, a pulse transmitter or the like may be used. The rotation of the electric motor may be constantly monitored.

Alternatively, a ball switch 42 for detecting the ratchet pole 38 being pulled out may be provided separately (imaginary line in FIG. 7), and the locking operation and unlocking operation of the latch member 36 may be detected by separate switches. . In particular, if the striker 10 is moved in the door opening direction upon detection of the release of the ratchet pawl 38, the rotation of the latch member 36 in the return direction and the outward movement of the striker 10 are almost simultaneous operations, which prevents weather damage. - It is possible to reduce the banging sound between the latch member 36 and the striker 10 that occurs when the door 1 is suddenly opened due to the reaction force of the strip 9, or the vibration noise that occurs from the door panel, so that the door opens smoothly. It can also improve your sense of well-being.

Although the above embodiment has been described using an electric motor, the present invention is not limited to this, and for example, an actuator driven by fluid pressure may be used. It is also possible to configure the latch device side to be movable in a straight line.

Note that the present invention is not limited to doors, but can equally be applied to tailgates, trunk lids, and the like.

<Effects of the Invention> As described above, according to the present invention, since the striker is moved in the door closing direction after detecting the fully latched state, the fully closed state of the door can be reliably obtained, and the half latched state can be avoided. It becomes possible to eliminate the risk of driving without being recognized, and this has a great effect in improving the reliability of the operation of the door lock device.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing how a door locking device for an automobile according to the present invention is attached to a door and a vehicle body. FIG. 2 is a partially cutaway view of the striker drive device in the direction of arrow 2 in FIG. 1. FIG. FIG. 3 is a view taken along the line ■-■ in FIG. 1. FIG. 4 is a view along the line IV-IV in FIG. 1. Figures 5 to 7 show the latch mechanism part as shown in Figure 1.
It is an explanatory diagram of the operation seen from the v-line direction. FIG. 8 is a block diagram showing the control circuit of the apparatus of the present invention. DESCRIPTION OF SYMBOLS 1... Door 1a... Door inner panel 1b... Door outer panel 2... Door rear end surface 3... Space 4... Latch mechanism 5... Vehicle body 5a... Body outer panel 5b... -Body inner panel 6...front end surface 7...space 8...strike drive device 9...weather strip 10...strike 11...cam mechanism 12...
・Deceleration ill 13...Electric motor 14...Casing 15...Mount bush 16...Guide groove 17...Slide member 17a...Outer surface 18...Opening 19...Base plate 20
... Seal member 21 ... Boss 22 ...
Elongated hole 23...Guide recess 24...Cam follower 25...Countersunk bolt 26a, 26b...Inner wall 2
7... Eccentric cam 27a... Cover 28... Camshaft 29... Final stage gear 30... Transmission gear group 31... Pinion gear 32... Slot
32a...Coating 33...Pin 34...
・Guide groove 35...Casing 36...Latch member 37a, 37b...Ratchet pawl 38...Ratchet ball 39...Notch 40...Spring 41...Latch switch 41a...Contact 43・44...Cushion member 50...Control circuit 51...Buffer 52...
-Chattering absorption circuit 53...Pulse rising edge detection circuit 54...Pulse falling edge detection circuit 55, 56...One-shot pulse generation circuits 57-59...AND circuit 60...Flip-flop circuit 61. 62...Knot circuit 63, 64...Electromagnetic relay 65, 66...Coil 67...Vehicle battery 69
...Thermistor 70...Resistor 71...Motor current detection circuit 72...Stabilized power supply circuit Patent applicant: Honda Motor Co., Ltd.
Honda Lock & Co., Ltd. Patent Attorney Yo Oshima - Figure 1 Figure 2 n Figure 3 Figure 6 Figure 5 Figure 7 rl

Claims (1)

[Claims] A latch device and a striker that can be engaged with each other before an opening/closing body such as a door is completely closed, and at least one of the latch device and the striker is moved along the opening/closing direction of the opening/closing body. A lock device having a drive device, further comprising means for detecting a fully engaged state between the latch device and the striker, and the drive device is controlled in accordance with a signal from the detection means. door lock device.