JPH11236776A - Locking/unlocking device for door body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress noise in collision or the like of a latch without hindering the actuation of various members by covering the sliding face of a drive cam except an engaging part of a fixing means and a retracting means in a latch, a contact part with a stopper and a collision part of the engaging part, with a resin material. SOLUTION: A latch 8 and a ratchet 10 are formed of a metallic material. Almost the whole part of latch 8 is covered with a resin member 12 except an engaging face 8b sliding in a large load when engaging with the latch face 10b of the ratchet 10 and an engaging face 8c sliding in a large load when engaging with the fixing piece 20a of a ratchet 20. The basal part including the support shaft 9 in the ratchet 10 is covered with a resin member 13. Hence, when the latch 8 is rotated, sliding sound between the latch and a base plate 5 or a drive cam 14 can be suppressed by the resin member 12. Further, when the ratchet 10 is turned, sliding sound between the ratchet and the base plate 5 or an actuating lever 22 can be suppressed by the resin member 13.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an opening and closing operation of a door body such as a door closer, for example, when a door body such as a side door or a trunk door is closed in a motor vehicle and the door body is closed in a fully latched state. The present invention relates to a lock device.

[0002]

2. Description of the Related Art For example, when a door of an automobile is closed, a large amount of force is required to close the door because a weatherstrip reaction force or a lock resistance acts immediately before the door is fully closed. Therefore, there is known a door closer device that forcibly closes the door to a full latched state when the closed state of the door is detected. Normally, the door closer device has two functions of an unlocking function for unlocking a door and a function of forcibly pulling a latch from a closing start position to a full latch position. In the door closer device, these functions are individually controlled using two actuators. Accordingly, the size of the door closer device is increased, and the manufacturing cost is high.

Therefore, a door closer device in which two functions are controlled by one actuator to reduce the size and cost is disclosed in, for example, Japanese Patent Publication No. Hei 5-27748.

[0004]

Incidentally, in a door closer device in which these two functions are controlled by one actuator, various members such as latches are complicatedly constructed. Then, the members operate while colliding or sliding with each other. Therefore, there is a problem that noise is generated by rubbing during the collision and sliding.

Therefore, it is conceivable to coat various members such as latches with resin. However, there is a possibility that the coated resin is melted by heat and the various members are welded. Then, the member may not operate normally.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to perform a retracting operation from a closing position to a full latch position and an unlocking operation of a door by using one actuator. It is an object of the present invention to provide a door locking / unlocking device that reduces the generation of noise without interrupting the operation of various members when the device is operated.

[0007]

According to the first aspect of the present invention, a locking portion for locking the door body in a closed state is held at a position where it can be introduced and in contact with a stopper member. A latch that is rotatably supported against an urging force in a direction in which the locking portion is introduced from an original position, and is engaged with the introduction of the locking portion to release the engagement; and the latch and the closing. A retracting means for engaging at the start position and rotating the latch from the closing start position to the full latch position, and engaging with the biasing force biased in the latch direction when the latch is rotated to the full latch position. Locking means for restricting the position of the latch at the full latch position, and the locking means for restricting the position of the latch to the full latch position so as to return the latch to the original position where it can be introduced by the urging force. Lock by means Unlocking means for releasing, a driving cam arranged to have a rotation axis parallel to the rotation axis of the latch, and actuating the retracting means and the unlocking means; Rotating body,
A link mechanism provided between the rotating body and the driving cam, for rotating the driving cam based on the rotation of the rotating body to operate the retracting unit and the unlocking unit; and The sliding surface of the drive cam except for the engaging portion with the locking means and the retracting means, a portion in contact with the stopper member, and at least one portion of a portion where the locking portion collides. The gist of the present invention is to include a resin.

According to a second aspect of the present invention, in the door locking and unlocking apparatus according to the first aspect, when the latch is engaged with the locking means and the retracting means, the latching means and the retracting means are provided. The point is that the collision site where the collision occurs is covered with a resin.

According to the first aspect of the present invention, at least one of the sliding surface of the latch, the contact surface with the stopper member, and the collision portion with the locking portion is covered with resin. And a portion that engages with the locking means and the retraction means is exposed. Therefore, noise at the time of collision or sliding at the latch can be suppressed. Moreover, the portion of the latch that engages with the locking means and the retracting means is a part that slides under a large load during the engagement,
This is where high frictional heat is generated. Therefore, by exposing the portion, it is possible to prevent the members from being welded to each other by the resin due to frictional heat generated at the time of engagement with the locking means and the retracting means. As a result, they do not hinder each other's operation.

According to the second aspect of the present invention, since the portion of the latch that collides with the locking means and the retracting means is covered with the resin, the collision noise generated at the time of the collision is suppressed with the resin. Can be.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. FIG. 1 shows a rear perspective view of the vehicle 1. At the rear of the vehicle 1, a trunk portion 1a for storing a load is provided. A trunk door 2 as a door body is provided at an upper portion of the trunk portion 1a, and forms a storage space for loading a load with the door 2. The trunk door 2 has a base end portion rotatably supported and a front end side (rear end side of the vehicle 1) bent downward in an L-shape.

A door closer device 3 is attached to a front end portion of the trunk door 2 at a center position in a vehicle width direction. On the other hand, a striker 4 as a locking portion is provided at a portion of the main body of the vehicle 1 facing the door closer device 3.

FIG. 2 is a plan view for explaining the entire structure of the door closer device 3, FIG. 3 is an exploded perspective view in which each member of the door closer device 3 is exploded, and FIG. 4 is an exploded view of each member. FIG. 5 is a side view of the door closer device 3 in FIG. 2 as viewed from the X direction. In FIGS. 3 and 4, assembling action lines (dashed-dotted lines) are drawn for parts where the members are assembled to each other.

As shown in FIGS. 2 to 5, the base plate 5 of the door closer device 3 is formed with an insertion passage 6 into which the striker 4 is inserted. As shown in FIG. 5, a support shaft 7 as a rotation shaft is provided in the vicinity of the insertion passage 6 in a direction perpendicular to the base plate 5. Support shaft 7
, A substantially disk-shaped latch 8 is rotatably supported.

The latch 8 is formed in a two-stage structure in which the cross section is stepped and the thickness near the center is thick, and has two outer peripheral surfaces on the upper stage side and the lower stage side. On the outer peripheral surface on the lower side of the latch 8, a concave portion 8a for restraining the striker 4 and a locking surface 8b which is locked in the full latch position are formed. On the outer peripheral surface on the upper side of the latch 8, a locking surface 8c which is locked at the closing start position is provided.
Are formed. The locking surfaces 8b and 8c are located closer to the insertion passage 6 side (substantially rightward of the support shaft 7 in FIG. 2) with respect to the center of rotation of the latch 8 supported by the support shaft 7. In the present embodiment, as shown in FIG. 2, the latch 8 is provided on the side wall 5 as a stopper member of the base plate 5.
The state in which the position of the striker 4 is restricted by contact with a is set as the original position of the latch 8 at which the striker 4 is released from the restraint by the latch 8.

As shown in FIG. 5, a support shaft 9 is provided on the opposite side of the support shaft 7 with the insertion passage 6 therebetween.
Are provided in the vertical direction with respect to. A base end side of a first ratchet 10 as a locking means is rotatably supported on the support shaft 9.

Hook portions 8d and 10a for hooking a coil spring 11 are provided on the latch 8 and the first ratchet 10.
Are formed respectively, and the coil spring 11 is stretched between the hook portions 8d and 10a. The latch 8 and the first ratchet 10 are attracted to each other by their coil springs 11. Here, the latch portion 8d of the latch 8
Is located at a position offset in the counterclockwise direction in FIG. 2 from a straight line connecting the center of the support shaft 7 supporting the latch 8 and the hook 10a of the first ratchet 10 in the original position of the latch 8. Have been. Therefore, the latch 8 is urged clockwise in FIG. 2 by one coil spring 11 and the first ratchet 1
0 is urged in a direction (counterclockwise in FIG. 2) in contact with the outer peripheral surface of the latch 8.

The first ratchet 10 has a latch surface 10b on the distal end side for engaging with the locking surface 8b of the latch 8. When the latch surface 10b engages with the locking surface 8b of the latch 8, the latch 8 is restricted to the full latch position.
Further, a locking pin 10c constituting locking release means is provided upright on the distal end side of the first ratchet 10.

In the present embodiment, the latch 8 and the first ratchet 10 are made of a metal material,
As shown in FIG. 4 and FIG.
Almost the entirety is covered with a resin member 12 as a resin so that b and 8c are exposed. In the first ratchet 10, the base end portion including the support shaft 9 is covered with a resin member 13. Therefore, when the latch 8 is rotated, the resin member 12 causes the base plate 5 and the driving cam 1 described below to rotate.
4 can be suppressed to a small level. Further, when the first ratchet 10 is rotated, the sliding noise between the base plate 5 and the operation lever 22 described later is suppressed by the resin member 13 to be small.

Incidentally, the latching surface 8b of the latch 8 is a portion to which a large load is applied and slides when the first ratchet 10 is engaged with the latch surface 10b, as shown in FIG. The locking surface 8c of the latch 8 is shown in FIG.
As shown in (b), the second ratchet 20 is a portion to which a large load is applied and slides when the second ratchet 20 is engaged with a locking piece 20a. That is, the two locking surfaces 8b and 8c are portions where high frictional heat is generated. Therefore, in the present embodiment,
The latching surfaces 8b and 8c of the latch 8 are exposed. As a result, the welding of the members to each other by the resin is prevented beforehand by the frictional heat generated at the time of engagement with the latch surface 10b and the locking piece 20a.

The latching surfaces 8b and 8c of the latch 8 are exposed, but as shown in FIG.
0 and a portion A2 where the locking piece 20a of the second ratchet 20 collides as shown in FIG.
Is covered with a resin member 12. Therefore, even if the first ratchet 10 and the locking piece 20 a collide with the latch 8, the collision noise is suppressed by the resin member 12.

The resin member 12 covering the latch 8 is formed with a thick portion 12a at a portion where the striker 4 collides with the recess 8a, and the thick portion 12a buffers the strike of the striker 4. Slit 12b is formed. The resin member 12 has a thick portion 12c with respect to a portion that collides with the side wall 5a of the base plate 5.
Are formed.

That is, in the present embodiment, the latch 8 and the first ratchet 10 are covered with the resin members 12 and 13, respectively, so that the sliding noise with other components during the sliding is reduced. . Also, in the present embodiment, the latch 8
By forming a thick portion 12a at a portion where the striker 4 collides with the resin member 12 covering the resin, and further forming a slit 12b, a collision sound at the time of the collision of the striker 4 is suppressed and a side wall of the base plate 5 is formed. A thick portion 12c is formed in a portion that collides with the side wall 5a to suppress a collision sound when the latch 8 collides with the side wall 5a.

A substantially U-shaped drive cam 14 is disposed on the upper surface side (the front side in FIG. 2) of the latch 8 via the resin member 12. One end of the drive cam 14 is rotatably supported by the support shaft 7. Drive cam 14
A support shaft 15 is inserted into the other end of the base member 5 in a direction perpendicular to the base plate 5. The drive cam 1 is attached to the support shaft 15.
One end of a link 16 constituting a link mechanism is rotatably connected to the lower surface side of 4.

The other end of the link 16 is rotatably connected to one end of a connecting arm 17 also forming a link mechanism by a connecting pin 17a. The connection arm 17 is connected to the output shaft 1 of the actuator 18 using the drive motor M as a drive source.
9 so as to be integrally rotatable. The drive motor M is a power source of the door closer device 3 and rotates the connecting arm 17 fixed to the output shaft 19 only in one direction (in the present embodiment, counterclockwise in FIG. 2). Note that the actuator 18 is fixed to the base plate 5 with screws (not shown).

Here, the connecting arm 1 shown in FIG. 2 (FIG. 6)
The position 7 is the open home position, and when the trunk door 2 is open, the connecting arm 17 is always located at the open home position. The position of the connecting arm 17 shown in FIG. 8 is the home position at the time of closing, and when the trunk door 2 is completely closed (full latch state), the connecting arm 17 is always located at the home position at the time of closing. I have.

When the connecting arm 17 is disposed at the two positions shown in FIGS. 2 (FIG. 6) and FIG.
The drive cam 14 connected via the. Is disposed at the neutral position. When the connecting arm 17 is rotated, the drive cam 14 is converted from a neutral position into a swinging movement swinging right and left.

As shown in FIG. 5, on the lower surface side of the drive cam 14, a second ratchet 20 constituting a retracting means is provided.
Are arranged at substantially the same height as the upper side of the latch 8. The second ratchet 20 has its base end at the drive cam 14.
The link 16 is supported so as to be rotatable and not to interfere with the operation of the link 16.

The tip side (free end side) of the second ratchet 20
Is formed with a locking piece 20a for engaging with a locking surface 8c formed on the upper side of the latch 8. When the locking piece 20a engages with the locking surface 8c of the latch 8 as shown in FIG. 6, the latch 8 is restricted to the closing start position. A driven pin 20b is fixed to the tip of the second ratchet 20 so as to extend on the lower surface side (the rear side in the drawing of FIG. 2).

An operating lever 22, which also constitutes a retracting means, is coaxially supported by the support shaft 9 via a first ratchet 10 and a resin member 13. Actuating lever 22
The hook portion 22a for hooking one end of the coil spring 23 is cut and raised. The other end of the coil spring 23 is hooked on a hook 5b cut and raised by the base plate 5. The engaging portion 5b is formed at a height that does not interfere with the operation of the operation lever 22. The operating lever 22 is urged by a coil spring 23 in a counterclockwise direction in FIG. In the vicinity of the support shaft 9 of the operating lever 22, a locking projection 22b that forms locking release means that comes into contact with the outer peripheral surface of the drive cam 14 is cut and formed.

The operating lever 22 has an arc-shaped guide groove 22c. The guide groove 22c accommodates and guides the driven pin 20b of the second ratchet 20. Since the operating lever 22 is urged in the counterclockwise direction in FIG. 2, the driven pin 20b of the second ratchet 20 is pushed against the inner peripheral surface of the guide groove 22c, and the locking piece 20a is latched. Is urged so as to come into contact with the outer peripheral surface on the upper stage side on which the locking surface 8c is formed. Then, as shown in FIG. 6, when the latch 8 is disposed at the closing start position, the operating lever 22 is rotated counterclockwise in FIG.
The latching piece 20a of the ratchet 20 is engaged with the latching surface 8c of the latch 8.
Is adapted to be engaged. At this time, the locking piece 20 a of the second ratchet 20 collides with the outer peripheral surface of the latch 8, but since the latch 8 is covered with the resin member 12,
The collision sound at the time of the collision is suppressed by the resin member 12.

The operating lever 22 is provided with an operating arm 22d. This operation arm 22d includes:
A door handle (not shown) is connected. When the opening operation is performed by the door handle, the operation lever 22 is rotated clockwise in FIG.

A limit switch 24 is provided at a position near the operating lever 22 on the base plate 5. When the latch 8 is disposed at the closing start position and the operation lever 22 rotates counterclockwise, the limit switch 24 tilts the movable element of the switch 24 by an engagement protrusion 22 e formed on the operation lever 22. The switch 24 is operated.

FIG. 11 shows the actuator 18. The actuator 18 detects, in its case 18a, a drive motor M as a drive source, a reduction mechanism 30 for reducing the rotation of the motor M, and a rotation position of the connection arm 17 that is integrally rotated with the output shaft 19. And the detection sensor 31 are integrally assembled. Case 18a
The mounting legs 18 for mounting to the base plate 5
b are formed at three places (only one is shown in FIG. 11, and the remaining two are arranged on the back side of the case 18 a so as to straddle the output shaft 19). Then, the mounting legs 18b and two mounting legs (not shown) are fixed to the base plate 5 with screws, and the actuator 18 is assembled integrally to the plate 5.

The reduction mechanism 30 includes four reduction gears 33 to 36 which are sequentially gear-coupled to a worm 32 fixed to the rotation shaft of the drive motor M. The output shaft 19 is fixed. On the reduction gear 36 to which the output shaft 19 is fixed, a plate 37 made of an insulating member is fixed on one circular surface 36a, and a predetermined pattern 38 made of a conductor is formed on the plate 37.

A substrate 39 is fixed inside the case 18a.
To the third contacts 40 to 42 are fixed. These first
The third to fourth contacts 40 to 42 are arranged so as to contact the pattern 38 on the same straight line extending in the radial direction of the plate 37. The first contact 40 slides on the outer periphery of the pattern 38, the third contact 42 slides on the inner periphery of the pattern 38, and the second contact 41 slides on the middle of the pattern 38. The plate 37 made of an insulating member is exposed at a predetermined angle in the outer peripheral portion and the intermediate portion of the pattern 38 where the first and second contacts 40 and 41 slide. Third
The inner peripheral portion of the pattern 38 with which the contactor 42 slides is covered with a conductor over the entire periphery without exposing the plate 37.

Then, the pattern 38 is rotated by the plate 37 which rotates together with the reduction gear 36, and the first and second contacts 40 and 41 are brought into conduction or non-conduction with the third contact 42 by the pattern 38. Connecting arm 1
7 (SG1, SG1)
2), that is, the detection sensor 31 is configured.

Here, the reduction gear 3 in FIG. 2 (FIG. 6)
The arrangement of No. 6 is when the connecting arm 17 is arranged at the home position at the time of opening. At this time, the first
The contact 40 is brought into a non-conductive state with the third contact 42 by the pattern 38, and the second contact 41 is brought into a conductive state with the third contact 42 through the pattern 38.

The rotation from the rotation position immediately after the open home position position shown in FIG. 2 (FIG. 6) to before the connection arm 17 (reduction gear 36) reaches the closed home position position shown in FIG. In the moving area, the first and second contacts 40 and 41 are connected together via the pattern 38 to the third contact 42.
And the conductive state.

When the rotational position of the connecting arm 17 (reduction gear 36) reaches the home position at the time of closing as shown in FIG. 8, the first and second contacts 40 and 41 become the pattern 3
8, both are in a non-conductive state with the third contactor 42.

The rotation of the connecting arm 17 (reduction gear 36) from the rotation position immediately after the closed home position position shown in FIG. 8 to the position before reaching the open home position position shown in FIG. 2 (FIG. 6). In the movement region, the first contact 40 is in conduction with the third contact 42 via the pattern 38,
The second contact 41 is formed by the pattern 38 into the third contact 42.
Becomes non-conductive.

In other words, only when the connecting arm 17 (reduction gear 36) is located at the open home position shown in FIG. 2 (FIG. 6) and the closed home position shown in FIG. 40 is third by pattern 38
It becomes non-conductive with the contact 42. Also, the connecting arm 17
In the rotation area from the rotation position including the open home position position shown in FIG. 2 (FIG. 6) to the closed home position position shown in FIG.
The second contact 41 is connected to the third contact 42 via the pattern 38.
In the rotation region from the rotation position including the home position at the time of closing shown in FIG. 8 to before reaching the home position at the time of opening shown in FIG. 2 (FIG. 6),
The second contact 41 is formed by the pattern 38 into the third contact 42.
Becomes non-conductive.

Therefore, the first contact 40 is connected to the third contact 42
In this state, the connecting arm 17 (reduction gear 36) is turned to the open home position shown in FIG. 2 (FIG. 6) and the closed home position shown in FIG. Is detected. Further, since the second contact 41 is brought into conduction with the third contact 42, the connection arm 17
The second contactor 41 detects that the (reduction gear 36) is at a position before the closed home position shown in FIG. 8 from the rotational position including the open home position shown in FIG. 2 (FIG. 6). Becomes non-conductive with the third contactor 42,
It is detected that the connecting arm 17 (reduction gear 36) is at a position before the open home position shown in FIG. 2 (FIG. 6) from the rotational position including the closed home position shown in FIG. ing.

FIG. 12 shows an electrical configuration of the door closer device 3. The door closer device 3 is controlled by a closer controller 43 (hereinafter simply referred to as a controller) provided in the vehicle 1. The controller 43 includes a control circuit unit 44.

The first and second contacts 40 and 41 constituting the detection sensor 31 are connected to input ports P1 and P2 of the control circuit unit 44, respectively. Also, the third contact 4
2 is grounded and the limit switch 24
To the input port P3. The limit switch 24 switches the input port P3 to a ground state when not operating, and switches the input port P3 to a non-ground state when activated. The input port P4 of the control circuit unit 44 is grounded via a door open switch 45 such as a driver's seat opener switch for opening the trunk door 2 or a remote control switch.

When the first and second contacts 40 and 41 are brought into conduction with the third contact 42 via the pattern 38, the contacts 40 and 41 are grounded, and the input ports P1 and P2 are connected to the input ports P1 and P2. Ground level (L level) detection signal SG
1, SG2 are input. On the other hand, the first and second contacts 4
When 0 and 41 become non-conductive with the third contact 42 by the pattern 38, the contacts 40 and 41 become non-ground, and the non-ground level (H level) detection signal SG1 is applied to the input ports P1 and P2. SG2 is input. When the limit switch 24 is operated, the input port P3 is at the non-ground level (H level). When the limit switch 24 is not operated, the input port P3 is at the ground level (L level).
Is entered. When the door opening switch 45 is turned on to open the trunk door 2, a door opening signal SG4 of a ground level (L level) is input to the input port P4.

The output port P of the control circuit 44
An excitation coil 46b that performs a switching operation of a changeover switch 46a in the relay 46 is connected between the terminals 5 and P6.
The changeover switch 46a is connected to the positive electrode of the drive motor M, and the negative electrode of the drive motor M is connected to a positive temperature coefficient (PTC) as a protection circuit for the motor M.
rmistor) 47 is grounded. When the exciting coil 46b is excited, the changeover switch 46a connects the positive electrode of the driving motor M to the battery B to supply battery power to the motor M. When the exciting coil 46b is in a non-excited state, the drive motor M The supply of battery power to the motor M is cut off by grounding the positive electrode.

Here, the connection arm 17 (reduction gear 3
When 6) is located at a position before the closed home position shown in FIG. 8 from the rotation position including the open home position shown in FIG. 2 (FIG. 6), the second contact 41 becomes the third contact 42. The L level detection signal SG2 is input to the input port P2 of the control circuit unit 44 because the state is in a conductive state with the control circuit unit 44. The control circuit 44 detects the connection arm 1 based on the L-level detection signal SG2 input to the input port P2.
7 (reduction gear 36) is detected to be disposed in the rotation area.

At this time, when the rotational position of the connecting arm 17 (reduction gear 36) is located at the home position at the time of opening shown in FIG. 2 (FIG. 6), the first contact 40 Since it is in a non-conductive state with the element 42, the H level detection signal SG1
Is entered. The control circuit unit 44 controls the input port P1
Is detected that the connecting arm 17 (reduction gear 36) is located at the rotation position thereof based on the H-level detection signal SG1 input to the controller.

The connecting arm 17 (reduction gear 36)
Is located before the open home position shown in FIG. 2 (FIG. 6) from the rotational position including the closed home position shown in FIG.
And H, the detection signal SG2 at the H level is input to the input port P2 of the control circuit unit 44.
The control circuit unit 44 controls the H level input to the input port P2.
Based on the level detection signal SG2, the connection arm 17
(Reduction gear 36) is detected to be disposed in the rotation area.

At this time, when the rotational position of the connecting arm 17 (reduction gear 36) is located at the closed home position shown in FIG. 8, the first contact 40 is not in contact with the third contact 42. Since the conduction state is established, the H-level detection signal SG1 is input to the input port P1 of the control circuit unit 44. The control circuit unit 44 detects that the connecting arm 17 (reduction gear 36) is located at the rotation position based on the H-level detection signal SG1 input to the input port P1.

When the latch 8 is moved from the original position shown in FIG. 2 to the closing start position shown in FIG.
When the limit switch 24 is operated, the control circuit 44
The input signal P3 of the H level is input to the input port P3. The control circuit unit 44 excites the excitation coil 46b based on the H-level operation signal SG3 input to the input port P3. When the exciting coil 46b is excited, the changeover switch 46a connects the positive electrode of the drive motor M to the battery B and supplies battery power to the motor M.
That is, the controller 43 rotates the drive motor M, and rotates the connecting arm 17 disposed at the home position at the time of opening together with the reduction gear 36 in a counterclockwise direction. At this time, the pattern 38 also rotates in the counterclockwise direction with the rotation of the reduction gear 36, and the first contact 40 and the third contact 42 change from the non-conductive state to the conductive state. That is,
The detection signal SG1 input to the input port P1 of the control circuit unit 44 changes from H level to L level.

When the rotating connecting arm 17 reaches the closed home position shown in FIG. 8, the first contact 40 is disconnected from the third contact 42. That is, the detection signal S input to the input port P1 of the control circuit unit 44
G1 changes from L level to H level. Control circuit section 44
Sets the excitation coil 46b to the non-excitation state based on the H-level detection signal SG1 input to the input port P1. When the excitation coil 46b is in the non-excitation state, the changeover switch 46a grounds the positive electrode of the drive motor M, and cuts off the supply of battery power to the motor M. That is, the controller 43 stops the rotation of the drive motor M.

When the door open switch 45 is turned on in this state, an L level door open signal SG4 is input to the input port P4 of the control circuit section 44. Based on the L-level door open signal SG4 input to the input port P4, the control circuit 44
6b is excited. When the exciting coil 46b is excited,
The changeover switch 46a connects the positive electrode of the drive motor M to the battery B
To supply the battery power to the motor M. That is, the controller 43 rotates the drive motor M, and rotates the connection arm 17 disposed at the closed home position together with the reduction gear 36 in the counterclockwise direction. At this time, with the rotation of the reduction gear 36, the pattern 3
8 also rotates counterclockwise, and the first contact 40 and the third contact 42 are changed from the non-conductive state to the conductive state. That is, the detection signal SG input to the input port P1 of the control circuit unit 44
1 changes from H level to L level.

When the rotating connecting arm 17 reaches the home position at the time of opening shown in FIG. 2, the first contact 40 becomes non-conductive with the third contact 42. That is, the detection signal S input to the input port P1 of the control circuit unit 44
G1 changes from L level to H level. Control circuit section 44
Sets the excitation coil 46b to the non-excitation state based on the H-level detection signal SG1 input to the input port P1. When the excitation coil 46b is in the non-excitation state, the changeover switch 46a grounds the positive electrode of the drive motor M, and cuts off the supply of battery power to the motor M. That is, the controller 43 stops the rotation of the drive motor M.

Next, the operation of the door closer device 3 configured as described above will be described with reference to the drawings. The operation of the door closer device 3 is roughly divided into a lock operation and an unlock operation.

[Locking Operation] The locking operation is an operation until the opened trunk door 2 is completely closed, and the latch 8 is used to engage the second ratchet 20 and the latch 8.
And a closing operation until the latch 8 that engages the latch 8 with the first ratchet 10 is guided to a so-called full latch position.

1. Closing Start Position Guiding Operation When the trunk door 2 is open, the latch 8 is located at the original position as shown in FIG. 2, and the connecting arm 17 (reduction gear 36) is located at the home position at the time of opening.
In this state, since the first contact 40 is in a non-conductive state with the third contact 42 by the pattern 38, the H-level detection signal SG1 is input to the input port P1 of the control circuit unit 44. .

In this state, the limit switch 24
Is inactive, the input port P3 of the control circuit unit 44 is
Are grounded via the switch 24. That is, an L-level operation signal SG3 is input to the input port P3. Further, the door open switch 45 is also in a non-operating state,
The H level door open signal SG4 is input to the input port P4 of the control circuit unit 44.

Then, the striker 4 inserted into the insertion passage 6 resists the urging force of the coil spring 11 so that the latch 8
Is pushed, and the latching surface 8c of the latch 8 and the latching piece 20a of the second ratchet 20 are arranged at the closing start position where the latching piece 20a can be engaged, as shown in FIG. The second ratchet 20 is rotated in the same direction based on the rotation of the lever 22 in the counterclockwise direction, and the locking piece 20 a is engaged with the locking surface 8 c of the latch 8. Then, the latch 8 restricts the clockwise rotation from the closing start position by the engagement.

When the operating lever 22 rotates in the counterclockwise direction, the limit switch 24 is operated by the engaging projection 22e, and an H-level operating signal SG3 is input to the input port P3 of the control circuit section 44. You.

In this closing start position guiding operation, since the drive motor M does not operate, the connecting arm 17 (reduction gear 36) remains at the home position when opened. That is, the H-level detection signal SG1 is input to the input port P1 of the control circuit unit 44.

2. Closing Operation When the limit switch 24 is operated and an H-level operation signal SG3 is input to the input port P3 of the control circuit section 44, the control circuit section 44 outputs the H-level operation signal SG3.
In step 3, the exciting coil 46b is excited. When the exciting coil 46b is excited, the changeover switch 46a connects the positive electrode of the drive motor M to the battery B and supplies battery power to the motor M. That is, the controller 43
By rotating the drive motor M, the connection arm 17 arranged at the home position at the time of opening together with the reduction gear 36 is rotated in the counterclockwise direction. At this time, the reduction gear 36
The pattern 38 also rotates in the counterclockwise direction with the rotation of, and the first contact 40 and the third contact 42 change from the non-conductive state to the conductive state. That is, the input port P of the control circuit unit 44
The detection signal SG1 input to 1 changes from H level to L level.

With the rotation of the connecting arm 17 in the counterclockwise direction, the drive cam 14 connected by the link 16 and the support shaft 15 moves from the neutral position shown in FIG. It is rotated in the rotation direction. Then, the latch 8 of the second ratchet 20 connected to the driving cam 14 by the support shaft 21 is engaged with the locking surface 8c of the latch 8 so that the latch 8 The rotation forcibly rotates counterclockwise.

Eventually, the latch surface 1 of the first ratchet 10
When the latch 8 is rotated until 0b can be engaged with the locking surface 8b of the latch 8, the first ratchet 10 is rotated counterclockwise by the urging force of the coil spring 11. When the connecting arm 17 reaches the top dead center position shown in FIG. 7, the latch surface 10b of the first ratchet 10 and the locking surface 8b of the latch 8 are separated from each other. this is,
A margin is provided to ensure that the first ratchet 10 rotates counterclockwise.

Further, when the connecting arm 17 rotates counterclockwise, the drive cam 14 rotates clockwise, and the latch 8 rotates clockwise by the urging force of the coil spring 11. . When the latch surface 10b of the first ratchet 10 and the latching surface 8b of the latch 8 are engaged, the engagement restricts the rotation of the latch 8 clockwise from the full latch position, and the trunk door 2 Is completely closed (full latch state).

Even when the latch 8 is at the full latch position, the controller 43 continues to rotate the drive motor M and rotates the connecting arm 17 counterclockwise to the closed home position shown in FIG. When the connecting arm 17 (reduction gear 36) reaches the home position at the time of closing, the first contact 40 becomes non-conductive with the third contact 42 by the pattern 38, so that the first contact 40 is connected to the input port P1 of the control circuit section 44. The input detection signal SG1 changes from L level to H level.

Then, based on the H-level detection signal SG1 input to the input port P1, the control circuit 44 sets the excitation coil 46b to the non-excitation state. When the excitation coil 46b is in the non-excitation state, the changeover switch 46a grounds the positive electrode of the drive motor M, and cuts off the supply of battery power to the motor M. That is, the controller 43 stops the rotation of the drive motor M, arranges the drive cam 14 at the neutral position, and connects the connecting arm 17 (reduction gear 36).
Is placed at the home position when closed.

In this closing operation, the second contact is made until the connecting arm 17 (reduction gear 36) reaches the closed home position from the rotational position including the open home position to the closed home position shown in FIG. The contact 41 is in conduction with the third contact 42 via the pattern 38.
Accordingly, during this operation, the L-level detection signal SG2 is input to the input port P2 of the control circuit unit 44.

[Unlocking Operation] The unlocking operation is an operation of opening the fully closed trunk door 2, that is, an operation of releasing the engagement between the latch 8 and the first ratchet 10 and returning the latch 8 to the original position. It is.

When the trunk door 2 is completely closed (full latch state), as shown in FIG. 8, the latch 8 is located at the full latch position, and the connecting arm 17 is located at the home position when closed. In this state, since the first contact 40 is in a non-conductive state with the third contact 42 by the pattern 38, the H-level detection signal SG1 is input to the input port P1 of the control circuit unit 44. . When the door open switch 45 such as the driver's seat opener switch or the remote control switch is turned on, the door open signal SG4 input to the input port P4 of the control circuit unit 44 changes from H level to L level. Control circuit section 44
Excites the exciting coil 46b based on the L-level door opening signal SG4. When the exciting coil 46b is excited, the changeover switch 46a connects the positive electrode of the drive motor M to the battery B and supplies battery power to the motor M. That is, the controller 43 rotates the drive motor M, and rotates the connection arm 17 disposed at the closed home position together with the reduction gear 36 in the counterclockwise direction. At this time, the pattern 38 also rotates in the counterclockwise direction with the rotation of the reduction gear 36, and the first contact 40 and the third contact 42 change from the non-conductive state to the conductive state. That is, the detection signal SG1 input to the input port P1 of the control circuit unit 44 changes from H level to L level.

As the connecting arm 17 rotates counterclockwise, the drive cam 14 connected to the link 16 by the support shaft 15 moves clockwise from the neutral position shown in FIG. It is turned. The rotating drive cam 14 eventually comes into contact with the locking projection 22b of the operating lever 22 to rotate the operating lever 22 clockwise about the support shaft 9. At this time, the first outer peripheral surface of the operation lever 22 is
Since the locking pin 10c of the ratchet 10 is in contact, the first ratchet 10 is rotated clockwise about the support shaft 9.

By such a series of operations, the latch surface 10b of the first ratchet 10 comes off the latch surface 8b of the latch 8 as shown in FIG. At this time, the second
The ratchet 20 has a driven pin 20b whose operating lever 2
2 is guided by the second guide groove 22c.
With the rotation of the latch 8, the latch 8 is separated from the latching surface 8 c to a position where the latch 8 is not engaged with the latching surface 8 c. As a result, the first ratchet 1
0 and the latch 8 are released, the latch 8
Is rotated clockwise around the support shaft 7 by the urging force of the coil spring 11 and returns to the side wall 5 of the base plate 5.
The position is regulated at the position abutting on a, that is, the original position.

Even if the latch 8 returns to the original position, the controller 43 continues to rotate the drive motor M, and rotates the connecting arm 17 counterclockwise to the open home position shown in FIG. When the connecting arm 17 (reduction gear 36) reaches the home position at the time of opening, the first contact 40 is disconnected from the third contact 42 by the pattern 38, so that the first contact 40 is connected to the input port P1 of the control circuit unit 44. The input detection signal SG1 changes from L level to H level.

Then, the control circuit unit 44 sets the excitation coil 46b to the non-excitation state based on the H-level detection signal SG1 input to the input port P1. When the excitation coil 46b is in the non-excitation state, the changeover switch 46a grounds the positive electrode of the drive motor M, and cuts off the supply of battery power to the motor M. That is, the controller 43 stops the rotation of the drive motor M, arranges the drive cam 14 at the neutral position, and connects the connecting arm 17 (reduction gear 36).
Is placed at the home position when it is opened.

In this unlocking operation, the second operation is performed until the connecting arm 17 (reduction gear 36) reaches the closed home position position shown in FIG. 2 from the rotational position including the closed home position position. Contact 41 is pattern 3
8 makes the third contactor 42 non-conductive.
Therefore, during this operation, the H-level detection signal SG2 is input to the input port P2 of the control circuit unit 44.

Next, while the door closer device 3 is performing the closing operation and the unlocking operation, the drive power supplied to the device 3 is turned off, and after the operation of the device 3 is temporarily stopped, the power is supplied again. The operation of the device 3 in the case of the above will be described.

In this case, when the connecting arm 17 (reduction gear 36) is located at both home position positions, that is, when the first and third contacts 4
When the detection signals SG1 at the H level are input to the input port P1 of the control circuit unit 44, the operation is not performed. In other words, the device 3
And the third contacts 40 and 42 are in a conductive state, and an L-level detection signal SG1 is input to the input port P1 of the control circuit unit 44.
Operates when is input.

[Case where the drive power supply is cut off during the closing operation] As described above, in this closing operation, the connecting arm 17 (reduction gear 36) includes the open home position shown in FIG. 2 (FIG. 6). From the pivoted position to the closed home position shown in FIG.
The second contact 41 is connected to the third contact 42 via the pattern 38.
And a conduction state. Accordingly, during this operation, the L-level detection signal SG2 is input to the input port P2 of the control circuit unit 44.

Therefore, when the power is supplied again, the control circuit 44 detects the L level detection signal SG2 input to the input port P2 and the L level detection signal SG1 input to the input port P1. And, like above,
By rotating the drive motor M, the connecting arm 17 (reduction gear 3
6) is rotated to the closed home position shown in FIG. 8 to continue the closing operation.

[Driving power is cut off during unlock operation] As described above, in this unlock operation,
From the rotation position including the closed home position position shown in FIG. 8 until the connecting arm 17 (reduction gear 36) reaches the open home position position shown in FIG.
The contact 41 is in a non-conductive state with the third contact 42 by the pattern 38. Therefore, during this operation, the H-level detection signal SG2 is input to the input port P2 of the control circuit unit 44.

Therefore, when the power is supplied again, the control circuit 44 detects the H level detection signal SG2 input to the input port P2 and the L level detection signal SG1 input to the input port P1. And, like above,
By rotating the drive motor M, the connecting arm 17 (reduction gear 3
6) is rotated to the home position at the time of opening shown in FIG. 2 (FIG. 6) to continue the unlocking operation.

Therefore, in the present embodiment, when power is supplied again, the control circuit unit 44 can determine whether the door closer device 3 is in the retracting operation to the full latch position or the operation for unlocking. Therefore, the operation can be accurately resumed.

As described above, according to the present embodiment,
It has the following features. (1) The latch 8 is almost entirely covered with the resin member 12 so that the locking surfaces 8b and 8c are exposed. That is, the sliding surface of the latch 8 with the drive cam 14 is covered with the resin.
Therefore, when the latch 8 and the drive cam 14 are relatively rotated, the sliding noise can be suppressed by the resin member 12.

(2) In addition, each of the locking surfaces 8b and 8c is a portion where a large load is applied and slides when engaging with the latch surface 10b and the locking piece 20a, and a portion where high frictional heat is generated. It is. Therefore, in the present embodiment, by exposing the locking surfaces 8b and 8c of the latch 8, the latch surface 10b is exposed.
Due to the frictional heat generated at the time of engagement with the b and the locking piece 20a, the members are prevented from being welded to each other by the resin. As a result, they do not hinder each other's operation.

(3) Each latching surface 8b, 8c of the latch 8
Are exposed, a portion A1 where the first ratchet 10 collides as shown in FIG. 10 (a), and a portion A2 where the locking piece 20a of the second ratchet 20 collides as shown in FIG. 10 (b). And the resin member 12. Therefore, even if the first ratchet 10 and the locking piece 20 a collide with the latch 8, the collision noise is suppressed by the resin member 12.

(4) The resin member 12 has a recess 8
A thick portion 12a is formed at the portion where the striker 4 collides with a portion a, and a slit 12b is formed in the thick portion 12a to buffer the striker 4 from colliding. Therefore, it is possible to suppress the collision sound when the striker 4 collides.

(5) The resin member 12 has a thick portion 1 against a portion that collides with the side wall 5a of the base plate 5.
2c is formed. Therefore, a collision sound when the latch 8 collides with the side wall 5a is suppressed.

Note that the embodiment of the present invention may be modified as follows. In the above embodiment, the latch 8 is connected to each of the locking surfaces 8b and 8c.
Is almost entirely covered with a resin member 12 so as to be exposed, thereby suppressing noise generated from the sliding surface with the drive cam 14, the collision portion of the striker 4, and the collision portion of the side wall 5a of the base plate 5, respectively. However, at least one of these may be coated with a resin.

In the above-described embodiment, the slit 12b is formed in the portion of the resin member 12 covering the latch 8 where the striker 4 collides. However, the slit 12b need not be formed. In the above-described embodiment, the first ratchet 10 is covered with the resin member 13, but may not be covered.

In the above embodiment, the door closer 3 is attached to the trunk door 2, but may be attached to another door.

[0092]

As described in detail above, according to the present invention,
In a locking / unlocking device that performs a retracting operation from a closing position to a full-latch position and an unlocking operation of a door body by using one actuator in common, the operation of various members at the time of operation of the device is not interrupted without noise. It is possible to provide a door locking / unlocking device that reduces the occurrence.

[Brief description of the drawings]

FIG. 1 is a rear perspective view of a vehicle according to an embodiment.

FIG. 2 is a plan view showing the door closer device.

FIG. 3 is an exploded perspective view showing the door closer device.

FIG. 4 is an exploded plan view showing constituent members of the door closer device.

FIG. 5 is a side view as viewed from the X direction in FIG. 2;

FIG. 6 is a plan view for explaining the operation of the door closer device.

FIG. 7 is a plan view for explaining the operation of the door closer device.

FIG. 8 is a plan view for explaining the operation of the door closer device.

FIG. 9 is a plan view for explaining the operation of the door closer device.

FIG. 10 is a plan view for explaining each engagement state of the latch.

FIG. 11 is a plan view showing an actuator.

FIG. 12 is a circuit diagram showing an electrical configuration of the door closer device.

[Explanation of symbols]

2 ... trunk door as a door body, 4 ... striker as a locking part, 5 a ... side wall as a stopper member, 7 ... support shaft as a rotating shaft, 8 ... latch, 8 b, 8 c ... engagement as an engagement part Stop surface, 10... First ratchet as locking means, 10 c. Locking pin constituting locking release means, 12.
Resin member as resin, 12b slit, 14 drive cam, 16 link constituting link mechanism, 17 connecting arm constituting link mechanism, 18a case, 20 ...
A second ratchet constituting the retracting means, 22 an operating lever constituting the retracting means, 22b an engaging projection constituting the unlocking means, 36 a reduction gear as a rotating body, A
1, A2: collision site, M: drive motor.

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Hideo Morimoto 2 Kirihara-cho, Fujisawa-shi, Kanagawa Prefecture Inside Shiroki Industry Co., Ltd. (72) Inventor Shinji Endo 2 Kirihara-cho, Fujisawa-shi, Kanagawa Prefecture Shiroki Industry Co., Ltd.

Claims (2)

[Claims] 1. A locking portion (4) for locking a door (2) in a closed state from an original position where it can be introduced and is held in contact with a stopper member (5a). A latch (8) which is rotatably supported against a biasing force in a direction in which the locking portion (4) is introduced, and is engaged with the introduction of the locking portion (4) and released from the engagement; Retraction means (20, 22) for engaging with the latch (8) at the closing start position and rotating the latch (8) from the closing start position to the full latch position.
When the latch (8) is rotated to the full latch position, the latch (8) is engaged by the urging force urged in the direction of the latch (8) to restrict the position of the latch (8) at the full latch position. Means (10) and a locking means (10) for restricting the position of the latch (8) to the full latch position in order to return the latch (8) to the original position where it can be introduced by the urging force. Lock release means (10c, 22b) for releasing the stop
A rotation axis (7) parallel to the rotation axis (7) of the latch (8).
And the retracting means (20, 2)
2) A drive cam (14) for operating the unlocking means (10c, 22b), a rotating body (36) rotated by a drive motor (M), the rotating body (36) and the drive cam ( 14), the driving cam (14) is rotationally driven based on the rotation of the rotating body (36), and the retraction means (2) is provided.
0, 22) and a link mechanism (16, 17) for operating the unlocking means (10c, 22b); and in the latch (8), the locking means (10) and the retracting means (20, 22). (8b, 8)
c) a resin that covers at least one of a sliding surface with the driving cam (14), a portion that abuts on the stopper member (5a), and a portion that collides with the locking portion (4), excluding c). 12) A door locking / unlocking device comprising: 2. The door locking / unlocking device according to claim 1, wherein the latch (8) is locked when engaged with the locking means (10) and the retracting means (20, 22). Means (1
0) and a collision portion (A1, A2) where the retraction means (20, 22) collide with a resin (12).