JPH0337353Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electric locking mechanism for releasing an automobile door from an ajar state.

Conventionally, if the force used to close a car door is weak, the repulsive force of the door seal rubber or the air pressure inside the vehicle often prevents the car door from being completely closed, resulting in an incomplete half-locked state. There was a danger that the door could open inside and cause an accident.

This invention uses motor power to automatically close the door to the fully closed position even if it is half open or close to it when the door is closed, eliminating the half open state.When the door is closed, the door is always fully closed. This idea was designed to maintain safety while driving.

An example of the implementation of the present invention will be explained with reference to the drawings. 1 is a vehicle body, 2 is a door, 3 is a housing provided in the door 2, 4 is a motor, and a rotation shaft 5 of the motor 4 is shown.
A worm gear 6 is formed at the tip. Reference numeral 7 denotes a clutch mechanism, and the clutch mechanism 7 has a gear 10 rotatably attached to a shaft 9 on which a gear 8 is pivoted, and teeth are carved in opposite directions around the opposing surfaces of the gears 8 and 10. Meshing teeth 8a, 10
a, each tooth transmits the clockwise rotation of the gear 8 to the gear 10, but the clockwise rotation of the gear 10 is formed in a direction that is not transmitted to the gear 8, that is, it rotates idle (Fig. 5). ). Furthermore, gear 8
Concave grooves 8b and 10b are formed in the center of the gear 10, respectively, and a compression spring 11 having elasticity that normally keeps the gear 8 and the gear 10 apart is inserted into the concave groove 8.
b, 10b, and one end 9 of the shaft 9
a is supported on one side of the housing 3, and the other end 9b of the shaft 9 projects outside the other side of the housing 3, and is surrounded by a coil 12a in an electromagnetic actuator 12 connected to the housing 3. The plunger 12b is faced with a gap therebetween. One gear 8 of the clutch mechanism 7 is meshed with the worm gear 6. Reference numeral 13 denotes a latch which is supported on the housing 3 by a shaft 14 with a gear part 13a provided on one side meshing with the gear 10 of the clutch mechanism 7, and on the other side of the periphery of the latch 13. the inside surface 2 of the door 2 when
A notch 13b is formed in a region where the door 2 and the guide groove 15 formed in the housing 3 overlap at point a. The notch 13b is followed by a protrusion 13c, a first step 13d, a second step 13e, and a protrusion 13f that closes (ON) the switch 16 when the contact piece 17 of the switch 16, which will be described later, is pressed. to form. The switch includes a contact portion 17a of an elastic contact piece 17 for opening and closing the switch 16.
is made to face the convex portion 13f of the latch 13 so as to be able to approach and separate. 18 is a cam facing the latch 13 and supported on the housing 3 by a shaft 19;
One end 2 is wound with a spring 20 having elasticity that tends to rotate the cam 18 toward the latch 13 at all times.
0a to the shaft 19, the other end 20b to the cam 18, and the protrusion 1 of the latch 13 on one side of the cam 18.
3c, a recessed portion 18a that engages with the first step 13d and the second step 13e, and a claw 18b that is in contact with the front portion 21a of the lower lever 21 at the tip on the other side.
are formed respectively. 21 is a lower lever supported on the housing 3 by a shaft 22, and the front part 21a is connected to the claw 1.
8b, and the rear part 21b is normally connected to the operation button 23 of the door handle switch 23.
Close (ON) the door handle switch 23 by pressing a, and only when opening the door 2 by rotating the door handle 28 outward (counterclockwise), move away from the operation button 23a to open the door handle switch 23 ( OFF), and one end 24a of the rod 24 is rotatably supported. Reference numeral 25 designates an upper lever supported by a shaft 26 on the housing 3. A spring 27 having an elastic force that constantly rotates the upper lever 25 in a counterclockwise direction is wound around the shaft 26, and one end 27a is locked to the shaft 26. The other end 27b is locked to the upper lever 25, and the other end 24b of the rod 24 is rotatably supported by the front end 25a of the upper lever 25. 28 is a door handle supported on the door 2 by a shaft 29;
The tip portion 28c of the arm 28b connected to the upper lever 25 is made to face the rear end portion 25b of the upper lever 25 so as to be able to freely approach and separate from the rear end portion 25b.
A spring 30 having elasticity to return the door handle 28 to its original position is wound around the shaft 29, and one end 30a is locked to the shaft 29 and the other end 30b is locked to the arm 28b. The above-mentioned components other than the door handle 28, shaft 29, and spring 30 are incorporated into the door 2, including the motor 4, switch 16, door handle switch 23, and power source 31.
is connected in series with the electromagnetic actuator 1.
2 is connected in parallel with the motor 4 to form an electric circuit C. 32 is the guide groove 15 when the door 2 is opened and closed.
This is a striker provided on the vehicle body 1 side at the position where it is fitted and removed.

In the figure, 33 is a stopper provided on the housing 3 to restrict the rotation of the door handle 28.

Next, the operation of the present invention will be explained.

To open the door, hold the handle 28a of the door handle 28 in the closed state shown in FIG.
When the arm 28b is rotated counterclockwise around the shaft 29 against the elasticity of the spring 30, the arm 28b also rotates, and its tip 28c touches the rear end 25 of the upper lever 25.
Push b downward, and the upper lever 25 releases the spring 27.
The front end 25a pulls up the rod 24 by rotating clockwise around the shaft 26 against the elastic force of rotate counterclockwise. While the door 2 is closed, the rear part 21b of the lower lever 21 is connected to the door handle switch 2.
The door handle switch 23 was in the closed (ON) state until the operation button 23a of No. 3 was pressed.
is opened (OFF) because the rear part 21b is separated from the operation button 23a by counterclockwise rotation of the lower lever 21, and on the other hand, the contact portion 17a of the contact piece 17 of the switch 16 is opened (OFF) by the second step 13e of the latch 13. In this position, the switch 16 is open (OFF), the electric circuit C is cut off, and the motor 4 and the electromagnetic actuator 12 are not energized, so they do not operate electrically, and the plunger 12b is not displaced. Therefore, the gears 8 and 10 remain separated by the elasticity of the compression spring 11, and the respective meshing teeth 8
a and 10a also do not mesh. Lower lever 21
The front part 2 of the lower lever 21 rotates counterclockwise.
1a pushes the claw 18b of the cam 18 downward, so the cam 18 is rotated clockwise (arrow) about the shaft 19 against the elasticity of the spring 20, and the recess 18a is rotated.
Since the latch 13 is disengaged from the projection 13c, the latch 13 in which the gear 10 and the gear portion 13a are engaged becomes freely rotatable. On the other hand, a striker 32 fixed to the vehicle body is fitted into the overlapping portion of the notch 13b of the latch 13 and the guide groove 15 of the housing 3. ), the latch 13 rotates clockwise around the shaft 14 as the door is displaced, and at the same time the guide groove 15 is also displaced outward (to the right in Figure 1), and the striker 3 is moved as shown in Figure 2.
2 is removed from the guide groove 15, and the door 2 is opened as usual.

While the door 2 is closed, the door handle switch 23 is closed (ON) because the rear part 21b of the lower lever 21 presses the operation button 23a, but the switch 16 connected in series is closed (ON). Since the elastic contact piece 17 is not in contact with the convex portion 13f but is in contact with the second step 13e due to its elasticity, the operation button 16a is released and the switch 16 is open (OFF), so there is no electricity. The circuit C is cut off and no driving force is generated in the motor 4.

When attempting to open the door 2, the engaging relationship between the striker 32 and the notch 13b rotates the protrusion 13f together with the latch 13 in a clockwise direction, causing the contact portion 17a of the contact piece 17 to protrude. The switch 16 is closed (ON) because it is pressed by the section 13f to push the operation button 16a.
On the other hand, the door handle switch 23 is in the open position (OFF).
Therefore, the electric circuit C is cut off and the motor 4 is not driven.

When the door handle 28 is released immediately after the door 2 is opened, the door handle 28 and the upper lever 25 are both rotated clockwise by the elasticity of the springs 30 and 27, and the upper lever 25 is rotated clockwise. rotate counterclockwise and return to their original positions, so the rear part 21b of the lower lever 21 pushes the operation button 23a of the door handle switch 23, and the door handle switch 23 is closed (ON). When trying to open the door 2, the striker 32 is fixed to the vehicle body and does not change its position, whereas the latch 13 that engages the striker 32 with the notch 13b is moved together with the door 2 into the first Since the notch 13b is displaced to the right in the figure and rotates clockwise as the latch 13 is displaced, the contact portion 17a of the contact piece 17 is separated from the convex portion 13f. (FIG. 2), the operation button 16a is released and the switch 16 is opened (OFF) by returning to the previous position by its own elasticity, so that the electric circuit C is cut off and the motor 4 is not driven.

As shown in FIG. 3, the door 2 is rotated in the closing direction (to the left in FIG. 1), and the guide groove 15 and notch 13 are
The latch 13 is rotated counterclockwise as the latch b is displaced to the position where it engages the striker 32.
Since the convex portion 13f presses the contact portion 17a of the contact piece 17, the operation button 16a is also pressed and the switch 16 is closed (ON).As the latch 13 rotates counterclockwise, the elasticity of the spring 20 is The protrusion 18 of the cam 18 which is about to rotate counterclockwise due to
c engages with the first step 13d of the latch 13, and the claw 18b pushes up the front part 21a of the lower lever 21, so the lower lever 21 rotates clockwise around the shaft 22, and the rear part 21b rotates clockwise. Since the door handle switch 23 is rotated and the operation button 23a is pressed, the door handle switch 23 is closed (ON), and the electric circuit C is closed and energized. Along with this, the electromagnetic actuator 12
is also energized, and as the worm gear 6 rotates as the motor 4 is driven, the electromagnetic actuator 1
In order for the second plunger 12b to protrude and push the one end 9a of the shaft 9, the gear 8, which is pivotally attached to the shaft 9, is pushed against the elasticity of the compression spring 11.
Meshing teeth 8a and 10 of gear 8 and gear 10, respectively
a are in contact with each other, and the rotation of the worm gear 6 is controlled by a gear 10 rotatably supported by a shaft 9.
is transmitted to the latch 13 through the latch 13, and the gear portion 13a is rotated counterclockwise. As a result, the notch 13b, which is undergoing rotational displacement, moves toward the striker 32.
Since the door 2 is displaced toward the end 15a of the guide groove 15 while being held in its mouth, the door 2 is automatically drawn toward the vehicle body 1, and the door 2 is moved toward the position where the end 15a of the guide groove 15 is in contact with the striker 32, as shown in FIG. Door 2 is securely closed as shown above.

When the door 2 is closed, the protrusion 13c is also rotationally displaced, and the protrusion 18c is constantly trying to rotate counterclockwise due to the elasticity of the spring 20, and the protrusion 18c is pressed against the first step 13d. The protrusion 13c comes into contact with the inner circumferential edge of the cam 18 and moves to mesh with the recess 18a. Furthermore, during this time, the convex portion 13f that was pushing the contact piece 17 also rotates counterclockwise and moves away from the contact portion 17a.
moves to the second step 13e due to the elasticity of the contact piece 17, and the contact piece 17 is displaced to the left to press the operation button 16a.
The pressing force is released, the switch 16 is opened, and the electric circuit C is cut off, so that the drive of the motor 4 is stopped.

Note that when the door 2 is rapidly closed, the notch 13b engages the striker 32, causing the latch 13 to be rapidly rotated counterclockwise.
The rotation is transmitted to the gear 10 meshing with the gear portion 13a of No. 3, and the gear 10 rotates clockwise more rapidly than the rotation of the gear 8, which will be described later. At the same time, the convex portion 13f pushes the contact piece 17, and the switch 16 is closed, and the motor 4 and the electromagnetic actuator 12 are closed.
is energized, the plunger 12b pushes the shaft 9, the gear 8 comes into contact with the gear 10, and the gear 8, which is being rotated by the worm gear 6, rotates in the same clockwise direction as the gear 10, The rotation speed is slower than the rotation of the gear 10 and is transmitted to the gear 10, but as shown in FIG. Because of the slippage, the rapid rotation of the gear 10 is not transmitted to the gear 8, and even if the gear 10 rotates rapidly, there is no risk of damage to the gear 8 due to rapid contact friction between the meshing teeth. Then, by the time the door 2 is fully closed, the latch 13 further rotates counterclockwise and the convex portion 13f and the second step 13e are also displaced, so that the contact portion 17a moves from the convex portion 13f to the second step 13.
e and the contact piece 17 for the operation button 16a
As the pressing force is released, the switch 16 is opened (OFF), the electric circuit C is opened, and the rotation of the gear 8 along with the motor 4 is stopped.The latch 13 and gear 10 are also stopped, and the door is quickly closed. There is no hindrance to rotation of the latch 13.

Therefore, according to the present invention, the opening and rapid closing operations of the door can be performed in the same way as in the conventional case, and even when the door is closed, the end of the guide groove does not come into contact with the striker, which is the so-called half-open state. However, as the convex portion of the latch rotates, an electric circuit is closed and the motor is automatically driven, and the rotation of the motor is transmitted to the latch via the clutch mechanism, and the rotation of the latch causes the motor to be guided. The door can be reliably closed by shifting the end of the groove to the position where it contacts the striker, and when fully closed, the concave part of the latch engages with the protrusion of the latch, preventing the latch from reversing and ensuring the fully closed state. This eliminates the various dangers that would occur if the door is held in the partially opened state and maintains safety while driving.

[Brief explanation of the drawing]

Figure 1 is a front view of the present invention with the door closed, Figure 2 is a front view of the device with the door open, and Figure 3 is a front view of the device with the door open.
The figure is a front view of the main parts showing the state of transition from half-open to fully closed, and Figure 4 is a cross-sectional view of the continuous part of the clutch mechanism, electromagnetic actuator, and lock plate.
FIG. 5 is an enlarged cross-sectional view of the line A and A in FIG. 3, and FIG. 6 is an electric circuit diagram. Code: 1...Vehicle body, 2...Door, 2a...Inner surface, 2b...Outer surface, 3...Housing, 4...
Motor, 5... Rotating shaft, 6... Worm gear,
7...Clutch mechanism, 8...Gear, 8a...Meshing teeth, 8b...Concave groove, 9...Shaft, 9a...
One end, 9b...Other end, 10...Gear, 10a...
...meshing tooth, 10b...concave groove, 11...compression spring,
12... Electromagnetic actuator, 12a... Coil, 12b... Plunger, 13... Latch,
13a...gear part, 13b...notch part, 13c...
...protrusion, 13d...first step, 13e...second
Step, 13f...Protrusion, 14...Shaft, 15...Guide groove, 15a...Terminal, 16...Switch, 16
a...Operation button, 17...Touch piece, 17a...Contact portion, 18...Cam, 18a...Recess, 18b...
...Claw, 18c...Protrusion, 19...Shaft, 20...Spring, 20a...One end, 20b...Other end, 2
1... Lower lever, 21a... Front, 21b... Rear, 22... Shaft, 23... Door handle switch, 23a... Operation button, 24... Rod, 2
4a...one end, 24b...other end, 25...upper lever, 25a...front end, 25b...rear end, 26
... shaft, 27 ... spring, 27a ... one end,
27b...Other end, 28...Door handle, 28a
...Handhold part, 28b...Arm, 28c...Tip, 29...Shaft, 30...Spring, 30a...
...One end, 30b...Other end, 31...Power supply, 32...
...Striker, 33...Stopper, C...Electric circuit.

Claims (1)

[Scope of utility model registration request] Worm gear 6 rotates in conjunction with motor 4
meshes with the gear 8 of the clutch mechanism 7, and the gear 10 is rotatably fitted on the shaft 9 to which the gear 8 is pivoted, and on the opposing surfaces of the gear 8 and the gear 10,
When gear 8 rotates in one direction, it meshes and gear 1
Gear teeth 8a and 10a are provided between the gears 8 and 10, and meshing teeth 8a and 10a are formed between the gears 8 and 10 to rotate the gear 10 and not engage with each other when the gear 8 rotates in the opposite direction. An electromagnetic actuator 12 is provided on one side of the clutch mechanism 7 and includes a plunger 12b that can move forward and backward to press the shaft 9 when energized. A guide groove 1 formed on the inner side surface 2a of the door 2 during rotation of the latch 13 is formed on the other side circumference of the latch 13, which has a meshing gear portion 13a formed on one side circumference.
A notch 13b is formed at a position and length that overlaps with the latch 13, and a protrusion 13c, a first step 13d, a second step 13e, and a convex portion 13f are provided in succession following the notch 13b. A switch 16 is provided which opens and closes an electric circuit according to the displacement of the protrusion 13f caused by the rotation of the latch 13.
and a cam 18 having a recess 18a and a protrusion 18c that mesh with the first step 13d and the second step 13e.
A claw 18b is provided at the tip of the cam 18 so as to be able to approach and separate from the front part 21a of the lower lever 21, and a door handle switch 23 is provided that opens and closes the electric circuit C as the lower lever 21 rotates. together with the rear part 21b of the lower lever 21 and the front end 25a of the upper lever 25.
are rotatably connected by a rod 24, and the rear end 25b of the upper lever 25 is made to face the arm 28b of the door handle 28 which is rotatably supported on the door 2, so that the motor 4 and the electromagnetic An electric circuit for solving an automobile door ajar condition, characterized in that an electric circuit C is formed by connecting a door handle switch 23, a switch 16, and a power source 31 in series to a circuit in which an actuator 12 is connected in parallel. Lock mechanism.