JP2002220961A - Transmission mechanism of latch device and latch device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To compose with a fewer number of parts. SOLUTION: An open lever 21, which rotates by a pulling operation of an open rod 19 and changes over the latch mechanism from a latching state to an unlatching state by moving an open link 23, is connected to the open link 23 by a free end 22c of a torsion coil spring 22 which makes the open lever 21 return operation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transmission mechanism and a latch device for a latch device such as a door lock device for latching a vehicle door.

[0002]

2. Description of the Related Art Conventionally, a door lock device as described above has been proposed by the present applicant, for example, as disclosed in
There is one disclosed in JP-A-2054. In this door lock device, as shown in FIG. 14, an open rod 90 pressed by an open operation of a door handle is operated.
An open lever 91 that rotates and an open link 92 that disengages a pawl of a latch mechanism (not shown) from the latch are connected by a bush 93. When the door handle is opened, the open lever 91 is rotated by the open rod 90, and the open link 92 is operated to disengage the pawl from the latch. The open lever 91 is urged by a spring (not shown) to perform a return operation.

[0003]

Meanwhile, the manufacturing cost of the latch device is also required to be reduced, and the number of parts and the number of assembly steps are also required to be reduced. However, Japanese Patent Application Laid-Open
In the door lock device of Japanese Patent Application Publication No. 002054, the number of components could not be further reduced.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a transmission mechanism of a latch device and a latch device which can be configured with a smaller number of components.

[0005]

According to a first aspect of the present invention, there is provided a first link rotatably supported on a base, and the first link is moved in one direction. An urging member for urging the first link so as to return when rotated, and rotatably connected to the first link, and moving with the rotation of the first link. The base, the first link
In a transmission mechanism of a latch device including a link and a second link as components, and a link device for transmitting motion between the first link and the second link, the first link and the second link are The biasing member is connected by using a movable portion.

According to the first aspect of the present invention, the first link and the second link, which are the components of the link mechanism for transmitting the motion in the latch mechanism and are swingably connected to each other, are the first link. Since the link is connected by the movable portion of the biasing member for returning the link, a dedicated connecting member such as a bush is not required. Therefore, the number of parts is reduced by the amount of the connecting member.

According to a second aspect of the present invention, in the first aspect of the invention, the first link is provided by a latch release means operated to switch a latch mechanism for latching the striker from a latched state to an unlatched state. It is an open lever that is rotated, and the second link is an open link that performs a motion operation for switching the latch mechanism from a latched state to an unlatched state.

According to the invention described in claim 2, according to claim 1
In addition to the operation of the invention described in (1), the open lever is rotated by the latch release means, and the open link moves, whereby the latch mechanism is switched from the latched state to the unlatched state.

According to a third aspect of the present invention, in the second aspect of the present invention, the open link includes a guide path with which an engaging portion provided on the base is engaged, and the open link is provided with a movement operation thereof. The guide path is connected to the base so that the engaging portion moves.

According to the invention described in claim 3, according to claim 2
In addition to the operation of the invention described in the above, the connection position of the open link and the engaging portion changes with the rotation of the open lever and the open link moves linearly, so that the open link moves away from the open lever. The provided rotating member can be rotated by the movement of the open link. Therefore, the rotating member provided to switch the latch mechanism between the latched state and the unlatched state and the open lever can be interlocked at a distant position without increasing the size of the transmission mechanism. Therefore, the degree of freedom in designing the latch device can be improved without increasing the size.

According to a fourth aspect of the present invention, in the third aspect of the present invention, the engaging portion is parallel to a rotation axis of the open lever and connects a connecting portion between the open lever and the open link. The open link is provided to rotate about a rotation axis about a rotation center, and prevents movement of the latch member from the latched state to the unlatched state by the movement of the open link. It is provided on a component of the lock mechanism.

According to the invention described in claim 4, according to claim 3,
In addition to the operation of the invention described in the above, the open link is rotated about the connecting portion with the open lever by the lock mechanism for holding the latch mechanism in the latched state, so that the linear movement operation is performed. Open link to do,
The turning member provided for switching the latch mechanism from the latched state to the unlatched state can be prevented from turning.

According to a fifth aspect of the present invention, in the first aspect of the present invention, the open lever and the open link are provided with a connecting hole provided in one of the open lever and the open link. Are connected by being locked to the movable portion of the biasing member at the insertion destination side of the connection hole.

According to the invention described in claim 5, according to claim 2,
In addition to the effect of the invention according to any one of claims 4 to 4, in addition to a connection hole provided in one of the open lever and the open link, a locking portion provided on the other is provided with a locking portion of the biasing member. Since the connection is performed by being locked by the movable portion, the configuration of the connection portion is simplified. Therefore, the number of processing steps and the number of assembly steps can be reduced as much as possible.

According to a sixth aspect of the present invention, in the fifth aspect of the present invention, the urging member is a torsion coil spring, and the torsion coil spring has a rotation axis of the open lever whose coil is The movable portion is a free end of a coil spring, and the free end is locked by the locking portion.

According to the invention described in claim 6, according to claim 5,
In addition to the operation of the invention described in the above, the torsion coil spring supported on the base such that the rotation axis of the open lever is located inside the coil portion causes the open lever to return and connects the open link to the open lever I do. For this reason, the torsion coil spring and the open lever are arranged so as to overlap in the rotation axis direction. Therefore, the transmission mechanism can be provided in a smaller space, and the size of the latch device can be reduced. In addition, when a torsion coil spring formed of metal spring steel is used, the durability is improved as compared with a configuration in which the open lever and the open link are connected by a connecting member made of synthetic resin. Even when used over the open link, it is difficult for the open link to come off the open lever.

According to a seventh aspect of the present invention, in the sixth aspect of the invention, the free end of the torsion coil spring is opened by biasing the open link also in the direction of the rotation axis of the open lever. It is characterized by being provided so as to be pressed by a lever.

According to the invention of claim 7, according to claim 6,
In addition to the effect of the invention described in (1), one end of the open link is more firmly supported by the open lever by the biasing force of the torsion coil spring in the rotation axis direction, so that during the operation for releasing the latch or the transmission When an impact is applied to the mechanism, the open link is unlikely to rattle and noise is unlikely to occur.

According to an eighth aspect of the present invention, in the invention according to any one of the fifth to seventh aspects, the locking portion of the open lever is provided in the connecting hole in a rotation axis direction thereof. A connecting portion extending in a direction opposite to the insertion direction is provided, and an open rod for opening an open lever in conjunction with a door handle to be opened is connected to the connecting portion.

According to the invention of claim 8, according to claim 5,
In addition to the effect of the invention according to any one of claims 7 to 7, the positional relationship between the latch device and the door handle differs depending on the type of the vehicle, and the posture of the open rod connected to the open lever differs. In addition, when the transmission mechanism operates when the door is opened, the connecting end of the open rod does not interfere with the movable portion of the biasing member. Therefore, the present invention can be used for various types of vehicles having different positional relations between the latch device and the door handle without causing operational problems.

According to a ninth aspect of the present invention, in the invention of the eighth aspect, a connecting member is provided on the connecting portion, the one end of the open rod being locked by elastic deformation when the one end of the open rod is assembled. Is provided.

According to the ninth aspect of the present invention, an eighth aspect is provided.
In addition to the effects of the invention described in (1), the open rod can be easily connected to the latch device assembled to the door when the vehicle is manufactured. In addition, during use of the vehicle, the open rod is unlikely to come off the open lever even if a large impact is applied as the door is opened and closed.

According to a tenth aspect of the present invention, there is provided the transmission mechanism of the latch device according to any one of the second to ninth aspects, and the latch mechanism, wherein the latch mechanism comprises a latch member and a pole. The latch member is rotatably supported by the base, locks the striker at a latch position and releases the striker at an unlatched position, and the pawl is rotatable on the base. Supported, holding the latch member in the latched position in the engaged position and releasing the latch member in the disengaged position, wherein the open link includes an open lift lever supported on the same rotation axis as the pawl. The pawl is rotated from the engaged position to the non-engaged position by rotating.

According to the tenth aspect of the present invention, the latch device is provided with a transmission mechanism for switching the latch mechanism from the latched state to the unlatched state by the open lever being rotated by the latch release means and the open link moving. In the above, the effect of the invention described in any one of claims 2 to 9 can be obtained.

According to an eleventh aspect, in the tenth aspect, the connection hole is provided in the open link, and the locking portion is provided in the open lever. An open lever and an open link are provided in the connection hole so that the locking portion is inserted outward from the base side, and the free end is engaged with the locking portion outside the open link. A torsion coil spring is provided so as to be combined.

According to an eleventh aspect of the present invention, in addition to the operation of the tenth aspect of the present invention, an open link and an attachment are provided while the base is fixed on a predetermined work table at the time of manufacturing the latch device. The biasing member can be assembled to the base.

[0027]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment) A first embodiment in which the present invention is embodied in a door lock device for a vehicle will be described below with reference to FIGS.

A door lock device 10 as a latch device shown in FIGS. 2 and 3 is installed in a door of a vehicle, and holds the door in a closed state by latching a striker (not shown) provided on the vehicle body side. The door lock device 10 includes a housing 11 as a base fixed to the door, and includes a housing groove 12 for housing a striker on the front side of the housing 11 illustrated in FIG. The housing 11 is formed by integrating a base housing 11a integrally formed of a synthetic resin and a base plate 11b press-formed from a metal plate.

In the housing 11, as shown in FIG.
A latch mechanism is provided near the accommodation groove 12. The latch mechanism includes a latch member 13, a torsion coil spring 14, a pawl 15, and a torsion coil spring 16.

The latch member 13 is provided in the housing groove 1 in FIG.
2 is rotatably supported by a rotation shaft 17 provided above the rotation shaft 2. The latch member 13 locks the striker accommodated in the accommodation groove 12 at the latch position shown in FIG. 2, and releases the striker at the unlatched position rotated clockwise by a certain angle. Then, the latch member 13 is urged by the torsion coil spring 14 so as to be disposed at the unlatched position.

The pole 15 is rotatably supported by a rotating shaft 18 provided below the accommodation groove 12 in FIG. In the engaged position shown in FIG. 2, the pawl 15 restricts the latch member 13 from rotating from the latch position to the unlatched position side, and at the disengaged position rotated clockwise by a certain angle. Allow rotation from the latch position to the unlatch position side. The pawl 15 is urged by the torsion coil spring 16 so as to be located at the engagement position.

On the other hand, as shown in FIG.
On the rear side, a release mechanism is provided which is operated by operating an outside door handle or an inside door handle (not shown) to switch the latch mechanism from a latched state to an unlatched state. The release mechanism is connected to an open rod 19 that is pushed down by operating the vehicle exterior door handle, and an open wire 20 that is pulled up when the interior door handle is operated. The release mechanism is an open lever 2 as the first link.
1. A torsion coil spring 22 as an urging member, an open link 23 as a second link, and an open lift lever 24 are provided. In the present embodiment, the open rod 19
And the open wire 20 are components of the latch release means.

The open lever 21 is rotatably supported by the housing 11 and has an open rod 1 at the left end in FIG.
9 is connected, and an open wire 20 is connected to the right end. The open lever 21 is used when the open rod 19 is pushed down or when the open wire 2
When 0 is raised, it rotates counterclockwise from the state shown in FIG.

More specifically, the open lever 21 is formed of a metal plate, and is rotated by a board 25 fixed to the housing 11 and a shaft 26 assembled to the housing 11 as shown in FIGS. It is movably supported. As shown in FIG. 5, an annular convex portion 27 is formed on the substrate 25 by burring, and a hole 27 a is provided in the center of the convex portion 27. On the other hand, the housing 11
A cylindrical shaft portion 28 is integrally formed at a position corresponding to the hole 27a, and a hole 29 is formed at the center of the shaft portion 28. The hole 27a provided in the projection 27 and the shaft 2
The diameter of the hole 29 is substantially the same as that of the hole 29 provided in the hole 8. The open lever 21 is inserted into the hole 27 a of the convex portion 27 while the center hole 21 a
Is fixed by the shaft body 26 fitted into the hole 29 of the second member.
The shaft 26 is formed of a synthetic resin.

At the left end of the open lever 21 in FIG. 3, a connecting hole 30 for connecting the open link 23 is provided as shown in FIG. Connection hole 3
Reference numeral 0 denotes a pair of fan-shaped openings, both of which share a main part and are arranged point-symmetrically about the main part.

Further, a connecting portion 39 for connecting the open rod 19 is provided at the left end of the open lever 21. The connecting portion 39 has a locking portion 31 which will be described later in the rotation axis direction of the open lever 21.
It is provided so as to extend in a direction opposite to the direction of insertion into 0. The connecting portion 39 is provided with a connecting hole 39a in which the L-shaped tip of the open rod 19 is locked.

As shown in FIGS. 1 to 5, the coil portion 22a of the torsion coil spring 22 is inserted into the shaft portion 28,
The fixed end 22 b is in contact with the peripheral surface of the step portion provided on the housing 11. That is, the torsion coil spring 22
Are supported by the housing 11 such that the rotation axis of the open lever 21 is located inside the coil portion 22a. The free end 22c as a movable portion extends to the open link 23 side. Then, the torsion coil spring 22 urges the open lever 21 that has rotated counterclockwise in FIG.

The upper end of the open link 23 is connected to the open lever 21 as shown in FIG.
The open link 23 is connected so as to be rotatable about a rotation axis parallel to the rotation axis of the open lever 21 about a connection portion with the open lever 21 as a rotation center, and is connected to the rotation of the open lever 21. Accordingly, it moves linearly downward from the state shown in FIG.

More specifically, the open link 23 is formed from a metal plate material, and as shown in FIG. 6, a locking portion 31 is formed in the connecting portion, and the locking portion 31 is provided with a notch 31a. I have. The locking portion 31 is, as shown in FIGS.
It is formed in the shape of a flat plate and inserted into the center of the connection hole 30. The locking portion 31 is inserted into the connection hole 30 while being held in the thickness direction by the main portions of both fan-shaped openings and being restricted in the width direction by the peripheral surfaces of both openings. The cutout portion 31 a is formed to extend in a direction perpendicular to the rotation axis of the open lever 21, and is arranged on the insertion destination side of the connection hole 30. The distal end of the free end 22c of the torsion coil spring 22 is locked in the notch 31a. The open link 23 is connected to the open lever 21 by the locking portion 31 inserted into the connection hole 30 being locked to the free end 22c. Further, the open link 23 has a connection hole 30 formed of a pair of fan-shaped openings.
Since the locking portion 31 is rotatable inside, it is connected to the open lever 21 so as to be relatively rotatable about the connecting portion as a rotation center.

As shown in FIG. 3, the lower part of the open link 23 is branched into two branch portions 32 and 33, and one of the branch portions 32 has a long hole as a guide path extending substantially vertically in FIG. 32a is formed, and an engagement portion 34 is formed at the lower end of the other branch portion 33.

The open lift lever 24 is connected to the pole 15
3 and is rotated by an angle in the counterclockwise direction from the state shown in FIG. 3 by the movement operation of the open link 23. To elaborate,
The open lift lever 24 is formed of a metal plate and has an engagement portion 35 extending in the radial direction of the rotation shaft 18. The engaging portion 35 is formed so as to extend substantially to the left in FIG. 3, and when the open link 23 moves downward, the engaging portion 34 engages with the distal end thereof. Then, the open lift lever 24 is rotated counterclockwise from the state shown in FIG. 3 by the engagement portion 34 of the open link 23 having moved downward and pressing the engagement portion 35 downward.

As shown in FIGS. 2 and 3, on the rear side of the housing 11, a lock, which is a component of a lock mechanism for preventing the latch mechanism from switching from the latched state to the unlatched state by the release operation of the release mechanism, is provided. Lever 36
Is provided. The lock mechanism includes a transmission mechanism (not shown) that operates the lock lever 36 when a key cylinder or a lock knob (not shown) is locked, and a lock wire 37 that is a component of the transmission mechanism and that is depressed or raised is locked. It is connected to a lever 36.

The lock lever 36 is rotatably supported by the housing 11 and has a lock wire 3 at the left end in FIG.
7 are connected. Further, the lock lever 36 is provided with a slider portion 38 as an engagement portion that engages with the long hole 32a of the open link 23. Slider part 38
When the open link 23 moves downward by the rotation operation of the open lever 21, the open link 2 is relatively moved along the long hole 32 a of the branch portion 32 so that the open link 2 is moved.
3 is restricted. In the present embodiment, the housing 11, the open lever 21, the open link 23, and the slider portion 38 constitute a link device (a swing slider crank mechanism).

The slider section 38 is provided with the lock lever 3.
With the turning operation of No. 6, a circular motion is made around the turning axis. Then, the slider portion 38 moves the open link 23 from the state shown in FIG. 3 around a rotation axis which is parallel to the rotation axis of the open lever 21 and about the rotation center of the connecting portion between the open lever 21 and the open link 23. Rotate counterclockwise. At this time, the lock lever 36 prevents the engaging portion 34 of the open link 23 from pressing the engaging portion 35 of the open lift lever 24, and the open lift lever 2
4 is prevented from rotating.

The door lock device 1 configured as described above
0 operates as follows. When the door is open, the latch member 13 is located at the unlatched position by the torsion coil spring 14. When the door is closed, the latch member 13 is pressed by the striker entering the accommodation groove 12 and rotates from the unlatched position to the latched position. At this time, the pawl 15 is pressed by the latch member 13 and rotates from the engaged position to the disengaged position,
3 is allowed to rotate. Then, the rotation of the latch member 13 disposed at the latch position toward the unlatched position is restricted by the pawl 15 and is held at the latch position. As a result, the striker is locked by the latch member 13, and the door is closed and latched.

When the door handle is operated while the door is closed, the open rod 19 is pushed downward, and the open lever 21 is rotated against the biasing force of the torsion coil spring 22 to rotate. Moves downward. At this time, the open link 23 moves linearly due to the restriction of the elongated hole 32 a by the slider portion 38. Then, the engaging portion 34 of the open link 23
Pushes down the engaging portion 35 to rotate the open lift lever 24 counterclockwise in FIG.
5 is rotated from the engaged position to the disengaged position. Then
The pawl 15 does not restrict the rotation of the latch member 13 at the latch position, and the biasing force of the torsion coil spring 14 causes the latch member 13 to rotate to the unlatched position. As a result, the striker is not locked by the latch member 13, so that the door is not latched in the closed state and can be opened.

On the other hand, when the door lock is switched from the unlocked state to the locked state while the door is closed, the lock lever 36 is rotated clockwise in FIG. 3 and the slider part 38 connects the open link 23 to the connecting part side. 3 is rotated in the counterclockwise direction in FIG. When the outside or inside door handle is operated in this state, the engaging portion 34 of the open link 23 that has moved downward does not engage with the engaging portion 35, and the open lift lever 24 does not rotate. Therefore, the pawl 15 is kept at the engagement position, and the latch member 13 is kept at the latch position. As a result, the striker remains locked by the latch member 13, and opening of the door by operating the door handle is prohibited.

According to the door lock device of this embodiment described in detail above, the following effects can be obtained. (1) An open lever 21 and an open link 2 which are components of a link device for transmitting motion from a vehicle exterior door handle to a latch mechanism, and which are connected to each other and swing.
3 is connected by the free end 22c of the torsion coil spring 22 for returning the open lever 21 to a return operation, so that a special connecting member such as a bush is not required unlike the conventional connecting mechanism. Therefore, the number of parts and the number of assembly steps are reduced by the number of the connecting members, so that the number of parts and the number of assembly steps can be reduced.

Also, unlike the prior art, in which the connection is made by using a bush 93 made of synthetic resin, the durability is improved, so that the open lever 21 can be used even when used for a long period of time. Open link 23 is hard to come off.

(2) With the rotation of the open lever 21, the connection position between the open link 23 and the slider portion 38 changes, and the open link 23 moves linearly. The provided open lift lever 24 can be rotated. Therefore, since the open lift lever 24 for switching the latch mechanism and the open lever 21 can be linked at a remote position without increasing the size of the transmission mechanism, the door lock device 10 can be operated without increasing the size. Design flexibility can be improved.

(3) Since the open link 23 pivots about the connecting portion with the open lever 21 by a lock mechanism for locking the latch mechanism in the latched state, the open link performs a linear operation. 23 can prevent the open lift lever 24 from rotating.

(4) Connection hole 30 of open lever 21
Since the locking portion 31 of the open link 23 inserted into the torsion coil spring 22 is locked by the free end 22c of the torsion coil spring 22, the connection is simplified. Therefore, the number of processing steps and the number of assembly steps can be reduced as much as possible.

(5) Since the torsion coil spring 22 is supported by the housing 11 such that the rotation axis of the open lever 21 is located inside the coil portion 22a, the torsion coil spring 22 and the open lever 21 rotate. They are arranged so as to overlap when viewed in the axial direction. Therefore, compared to the case where a tension coil spring is used instead of the torsion coil spring 22 or the case where the torsion coil spring 22 is provided such that the rotation axis of the open lever 21 is not located inside the coil portion 22a, the transmission is smaller. The mechanism can be provided in a small space.

(6) Free end 2 of torsion coil spring 22
2c is provided so as to move in a direction orthogonal to the rotation axis of the open lever 21, and the free end 22c is engaged with a notch 31a extending in a direction orthogonal to the rotation axis. Therefore, no excessive force is applied to the free end 22c or the locking portion 31 when the open lever 21 rotates. Therefore, when the latch mechanism is switched from the latched state to the unlatched state, abnormal noise is unlikely to occur in the transmission mechanism, so that a sense of quality can be improved.

(7) Locking part 31 of open link 23
Are supported in the connection hole 30 formed of a pair of fan-shaped openings, so that the connection hole 30 and the locking portion 31 rotate smoothly without shifting their rotation centers. Therefore, the open lever 21 and the open link 23 can be connected so as to be relatively smoothly rotated by the connection hole 30 and the locking portion 31 which are easy to process, and thus the number of processing steps is not increased.

(8) Free end 2 of torsion coil spring 22
2c can be locked to the locking portion 31 simply by being twisted and hung on the notch 31a, so that the torsion coil spring can be easily assembled and the open lever 21 and the open link 23 can be easily connected. it can.

(9) The connecting portion 39 provided on the open lever 21 extends in a direction opposite to the direction in which the locking portion 31 of the open link 23 is inserted into the connecting hole 30 in the direction of the rotation axis. For this reason, even if the position of the open rod 19 connected to the connecting portion 39 is different due to the difference in the positional relationship between the door lock device 10 and the door handle according to the type of vehicle, the connecting mechanism is not connected when the release mechanism is operated when the door is opened. The tip of the open rod 19 connected to the portion 39 does not interfere with the free end 22c of the torsion coil spring 22. Therefore, the door lock device 10 and the door handle can be used for various types of vehicles having different positional relations without causing a malfunction in operation.

(Second Embodiment) Next, a second embodiment in which the present invention is embodied in a door lock device for a vehicle will be described with reference to FIGS.
3 will be described. Note that this embodiment is basically different from the first embodiment in that the release mechanism in the first embodiment is changed. Therefore, the same reference numerals are used for other components that are the same as those of the first embodiment, and the description thereof is omitted. Only the release mechanism will be described in detail.

As shown in FIG. 8, a housing 11 of a door lock device 40 as a latch device of the present embodiment has
On the side opposite to the side on which the base plate 11b is provided, a bracket 41 press-formed from a metal plate material is fixed,
This bracket 41 is provided with a release mechanism of a latch mechanism. The release mechanism of the present embodiment includes an open lever 4
2. It comprises an open link 43, a torsion coil spring 44 and an open lift lever 45. And
In the present embodiment, the housing 11 and the bracket 41 form a base. The bracket 41 (housing 1)
1) Open lever 42 as a first link, open link 43 as a second link, and slider section 3
8 constitutes a link device.

The open lever 42 is press-formed from a metal plate, and as shown in FIGS.
Is supported swingably by a pin 46 supported by the pin 46. The pin 46 includes a shaft portion 46a (shown in FIG. 10) fitted into a hole (not shown) provided in the bracket 41, and the shaft portion 4a.
A head 46b having a diameter larger than 6a is provided, and the open lever 42 is supported between the bracket 41 and the head 46b while being held therebetween. At both ends of the open lever 42, an open rod connected to an interior door handle (not shown) and an open rod R also connected to an exterior door handle are connected. When each door handle is opened, a swing operation is performed.

As shown in FIG. 12, the open lever 42
Has a first restricting portion 47 and an operating portion 48 at one end thereof, a second restricting portion 49 at its central portion, and a locking portion 50 and a connecting portion 51 at its other end.

As shown in FIG. 11, the first regulating section 47
When the open lever 42 rotates in the direction of arrow A, the open lever 42 is formed so as to regulate the rotation of the open lever 42 at a position where it contacts the first contact portion 41 a provided on the bracket 41. This position is the original position of the open lever 42.

The operation section 48 is operated by a sub-open lever 52 swingably supported by an upright section 41b provided on the bracket 41, as shown in FIGS. An open rod connected to the vehicle interior door handle is connected to the sub open lever 52 via a member (not shown). Then, when the interior door handle is opened and the open rod is pulled, the sub-open lever 52 pivots in the direction of arrow B. At this time, the operation portion 52a of the sub-open lever 52 engages with the operation portion 48 of the open lever 42 and rotates from the original position in the direction opposite to the arrow A. This operation is the opening operation of the open lever 42. In the present embodiment, the sub open lever 5
2 is a component of the latch release means.

As shown in FIGS. 10 to 12, the second restricting portion 49 extends from the center of the open lever 42 toward the housing 11 in the direction of the rotation axis thereof. When the open lever 42 is opened from the original position, the second restricting portion 49 is provided with a second contact portion 41c provided on the bracket 41.
(Shown in FIG. 10).
Regulate the opening operation of That is, this position is the end position of the opening operation of the open lever 42, and
Performs an opening operation that rotates from the original position to the end position, and a return operation that rotates from the end position to the original position.

The locking portion 50 is connected to the open lever 42.
Is provided for swingably connecting the open link 43 to the main body. As shown in FIG. 12, the locking portion 50 is bent and formed so as to extend parallel to the rotation axis of the open lever 42 and to the side where the open link 43 is arranged. The locking portion 50 has a cutout portion 50a extending in a direction perpendicular to the rotation axis. That is, as shown in FIGS.
Is provided so as to extend outward from the housing 11 side.

The connecting portion 51 is provided for connecting the open rod R connected to the vehicle outside door handle to the open lever 42. Open rod R is
The opening operation of the open lever 42 is performed by the opening operation of the door handle on the vehicle exterior side. As shown in FIG. 12, the connecting portion 51 is bent so as to extend substantially parallel to the rotation axis of the open lever 42 and in a direction opposite to the direction in which the locking portion 50 extends. A pair of cutouts 51 a for fixing an open lever clip 53 as a connecting member for locking the open rod R is formed at the distal end of the connecting portion 51. That is, as shown in FIGS. 8 to 11, the connecting portion 51 is provided to extend from the open lever 42 to the housing 11 side. The open rod R is also a component of the latch release means.

As shown in FIGS. 8 to 12, at the center of the open lever 42, a spring locking piece 54 extending outward in the same rotation axis direction as the locking portion 50 is formed by bending. Have been. The spring locking piece 54 locks the torsion coil spring 44 and fixes it to the bracket 41.

An open lever clip (hereinafter simply referred to as a clip) 53 is integrally formed of a synthetic resin.
The door lock device 40 after completion is formed so that various types of open rods R prepared for each vehicle type can be connected. As shown in FIG. 12, a connecting ring R1 to which the clip 53 is connected is provided at one end of the open rod R. The connecting ring R1 is provided with a long-hole-shaped connecting hole R2.

As shown in FIGS. 13A to 13D, the clip 53 is formed by connecting a substantially disk-shaped base portion 55 and a substantially square-shaped engagement portion 56 with a shaft portion 57. Is formed. Further, the clip 53 is provided with a hole 58 penetrating in the center axis direction. As shown in FIG. 10, the clip 53 has a connection portion 51 inserted into a hole 58, and a front end portion of the connection portion 51 has two notches 51 a.
And is locked at the insertion point of the hole 58 to be fixed to the open lever 42.

Locking portions 59 for locking the open rod R are integrally formed on both side surfaces in the width direction of the engaging portion 56 so as to form a pair. As shown in FIG. 10, when the engagement portion 56 is fitted into the connection hole R2 of the open rod R, the both engagement portions 59 are elastically immersed into the interior of the engagement portion 56 and the connection ring R1. Is held between the engaging portion 56 and the base portion 55. In this state, the connecting ring R1 is engaged with the shaft portion 57, and the open rod R is rotatably connected to the open lever.

The open link 43 has one end rotatably connected to the locking portion 50 of the open lever 42. As shown in FIG. 12, at one end of the open link 43, a connection hole 60 into which the locking portion 50 is inserted is provided. The connection hole 60 is composed of a pair of fan-shaped openings, and both openings share a main part and are arranged point-symmetrically about the main part. Further, the peripheral surface of each opening is arranged on the same circumference. As shown in FIGS. 9 and 11, the connecting hole 60 holds the locking portion 50 in the thickness direction thereof at the main portions of both fan-shaped openings, and forms the locking portion 5 on the peripheral surface of both openings.
By restricting the movement of 0 in the width direction, the locking portion 50 is connected so as to be relatively rotatable within a certain angle range. In addition, the cutout portion 50 a is formed so as to protrude into a place where the connection hole 60 is inserted.

As shown in FIG. 8, the other end of the open link 43 is used to support the other end of the open link 43 when the open link 43 is rotated with the opening and returning operations of the open lever 42. Slot 6 as a guideway for
1 is provided. The slider portion 38 of the lock lever 36 is engaged with the elongated hole 61. Further, an engaging portion 62 for turning the open lift lever 45 during the operation of the open link 43 accompanying the opening operation of the open lever 42 to release the latch mechanism from the latched state is bent at an intermediate portion of the open link 43. Is formed.

The torsion coil spring 44 is formed of metal spring steel, and as shown in FIGS.
Is fixed to a spring locking piece 54 of the open lever 42, and a fixed end 44 b thereof is locked to a portion where the bracket 41 is present. The torsion coil spring 44 is held by the bracket 41 by the spring locking piece 54 so that the rotation center of the open lever 42 is located inside the coil portion 44a. Also, a free end 4 as its movable part
4c is locked by the cutout portion 50a of the locking portion 50 inserted into the connection hole 60 of the open link 43. That is, the torsion coil spring 44 is configured such that the free end 44 c is engaged with the locking portion 50 outside the open link 43.
It is provided outside the open lever 42. The torsion coil spring 44 provided in this manner urges the open lever 42 in the direction of arrow A to hold the open lever 42 at the original position.

Further, the free end 44c of the torsion coil spring 44 urges the open link 43 toward the housing 11 (in the direction of the arrow C shown in FIG. 11) in the direction of the rotation axis of the open lever 42, thereby causing the open lever 42 to rotate. The spring locking piece 54 and the bracket 41 are held so as to be held in a pressed state.
Fixed to. This is achieved by the spring locking piece 54.
The locking portion 5 is held in a state where the coil portion 44a is held near the housing 11 and the free end 44c is elastically deformed in the rotation axis direction.
Due to being locked to zero.

The open lift lever 45 is, as shown in FIG.
8 is fixed to one end. Open lift lever 45
Is provided with an engaging portion 45b which is press-formed from a metal plate material and extends from the disk-shaped base 45a to the open link 43 side. The engaging portion 56 of the open link 43 engages with the engaging portion 45b when the open link 43 moves along with the opening operation of the open lever 42, and rotates the open lift lever 45 in the direction of arrow D. . Then, the pawl 15 at the latch position is rotated to the unlatched position against the urging force of the torsion coil spring 16.

The door lock device configured as described above operates similarly to the door lock device of the first embodiment. According to the door lock device 40 of the present embodiment described in detail above, the following effects can be obtained in addition to the effects (1) to (8) of the first embodiment.

(1) The free end 44c of the torsion coil spring 44 made of metal spring steel urges the open link 43 in the rotation axis direction of the open lever 42 to press the open lever 42. For this reason, the torsion coil spring 4
4, one end of the open link 43 is more firmly supported by the open lever 42, so that the door is provided with the door lock device 40 when the door is opened or closed, or when the door is opened or closed. The open link 43 is less likely to rattle and noise is less likely to occur.

(2) Connection hole 60 of open link 43
On the other hand, the open lever 4 is inserted so that the locking portion 50 of the open lever 42 is inserted outward from the housing 11 side.
2 and an open link 43 are provided on the bracket 41. The torsion coil spring 44 is provided so that the free end 44c engages with the notch 50a of the locking portion 50 outside the open link 43.

Therefore, when the door lock device 10 is manufactured, the open link 23 and the torsion coil spring 22 can be sequentially assembled to the bracket 41 while the housing 11 is fixed on a predetermined work table. For this reason, assemblability is improved as compared with the door lock device 10 of the first embodiment.

(3) A connecting portion 51 is provided so as to protrude from the open lever 42 to the housing 11 side, and the connecting portion 51 is connected to an open rod R connected to an outside door handle. For this reason, the housing 1
Since the release mechanism does not protrude outward for 1
Interference with a glass guide or the like built in the door becomes difficult. Therefore, the position where the door lock device 40 is disposed is less likely to be restricted, or the number of vehicles that cannot be mounted is reduced.

(4) The connecting portion 51 provided at one end of the open lever 42 is
Are extended in a direction opposite to the direction of insertion into the connection hole 60. The open rod R is connected to the connecting portion 51. Therefore, the positional relationship between the door lock device 40 and the door handle differs depending on the type of vehicle on which the door lock device 40 is mounted. Sometimes, the connecting ring R1 of the open rod R does not interfere with the free end 44c. Therefore, it can be used for various types of vehicles in which the positional relationship between the door lock device 40 and the door handle is different, without causing a malfunction in operation.

(5) The synthetic resin clip 53 assembled and fixed to the connecting portion 51 is elastically deformed when the open rod R is assembled, and the connecting ring R1 is locked by the two locking portions 59 to the open lever 42. connect. For this reason, when manufacturing the vehicle, the door lock device 4 of the completed product assembled to the door is used.
The open rod R can be easily connected to 0. Further, when the vehicle is used, the open rod R does not easily come off from the open lever 42 even if a large impact is applied as the door is opened and closed.

Next, embodiments other than the first and second embodiments will be listed. In the first embodiment, the free end 22c of the torsion coil spring 16 is bent in advance, and the free end 22c pulls the locking portion 31 of the open link 23 toward the housing 11 in the rotation axis direction of the open lever 21. Configuration.
In such a configuration, since one end of the open link 23 is firmly supported by the open lever 21, the open link 23 is opened when the door is opened or closed or when an impact is applied to the door lock device 10. Less rattle and less noise.

In the first embodiment, the slider portion 3
Although 8 is provided on the lock lever 36 that rotates by pulling the lock wire 37, it may be provided on a component of a lock mechanism that is provided so as to operate linearly. The same applies to the second embodiment.

In the first embodiment, the open lever 21 and the open link 23 are connected by engaging the free end 22c with the locking hole provided in place of the notch 31a of the locking portion 31. Is also good. The same applies to the second embodiment.

In the first embodiment, the torsion coil spring 22 is provided outside the open lever 21. Also in this case, each effect of the first embodiment can be obtained.

In the first embodiment, the torsion coil spring 22 is configured to be supported by the housing 11 in a state where the coil portion 22a is disposed outside the shaft portion 28.
That is, the configuration may be such that the rotation axis of the open lever 21 is not disposed inside the coil portion 22a. The same applies to the second embodiment.

In the first embodiment, the urging member is
Although the open lever 21 and the open link 23 are connected at the free end 22c of the torsion coil spring 22, the biasing member may be a tension coil spring and connected at the free end. The same applies to the second embodiment.

In the first embodiment, the open link is connected to the open lift lever 24 so as to be relatively rotatable. That is, the configuration may be such that the lock lever 36 is not provided and the operation of the open link accompanying the opening operation of the open lever is not invalidated. The same applies to the second embodiment.

The first and second embodiments are embodied in a vehicle door lock device, but may be embodied in a vehicle hood latch, a trunk lid latch, or the like.

The present invention is not limited to a vehicle latch device, but may be embodied as a latch device for a refrigerator, a warehouse or the like. Hereinafter, technical ideas grasped from each of the above-described embodiments will be described together with their effects.

(1) In the invention as set forth in any one of claims 5 to 9, the connection hole (30, 60) comprises a pair of fan-shaped openings, and both openings are formed as main parts. The locking portions (31, 50) are formed in the shape of a flat plate, are sandwiched in the thickness direction by the main portions, and are shared by the opening portions. A transmission mechanism for a latch device, wherein the transmission mechanism is inserted into the connection hole in a state where movement of the peripheral surface is restricted in the width direction. According to such a configuration, the two links can be connected so as to smoothly rotate relative to each other by the opening and the locking portion that are easy to process, so that the number of processing steps hardly increases.

(2) In the invention as set forth in any one of claims 6 to 9, the locking portion (31, 50) is substantially aligned with the rotation axis of the open lever (21, 42). Notches (31a, 50a) extending in a direction orthogonal to each other
And a free end (22c, 44c) of the torsion coil spring (22, 44) is locked in the notch. According to such a configuration, assembling of the torsion coil spring and connection of both links can be easily performed.

[0094]

According to the first to eleventh aspects of the present invention, the number of parts can be reduced.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing a connecting portion of a transmission mechanism in a door lock device according to a first embodiment.

FIG. 2 is a schematic front view of the door lock device.

FIG. 3 is a schematic rear view of the same.

FIG. 4 is a schematic perspective view showing a main part of a transmission mechanism.

FIG. 5 is a schematic sectional view showing a support portion of the open lever.

FIG. 6 is a schematic exploded perspective view showing a connecting portion of an open lever and a link.

FIG. 7 is a schematic cross-sectional view showing a connecting portion of an open lever and a link.

FIG. 8 is a schematic perspective view showing a release mechanism of a door lock device according to a second embodiment.

FIG. 9 is a schematic perspective view showing a main part including an open lever, an open link, and a torsion coil spring.

FIG. 10 is a schematic perspective view showing a main part similarly viewed from the latch mechanism side.

FIG. 11 is a schematic perspective view showing a main part of the same.

FIG. 12 is a schematic exploded perspective view showing a connected state of an open lever, an open link, and an open rod.

13A is a front view showing an open lever clip, FIG. 13B is a side view thereof, and FIG. 13C is a side view thereof.
(D) is a rear view.

FIG. 14 is a schematic exploded perspective view showing a connecting portion of a transmission mechanism in a conventional door lock device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 Door lock device as a latch device 11 Housing which comprises a link device and a base 13 Latch member which comprises a latch mechanism 14 Similarly, a torsion coil spring 15 Also, a pole 16 Similarly, a torsion coil spring 18 Rotating shaft 19 Components of latch release means 20 An open rod also as an open wire 21 An open lever as a first link constituting a link device 22 A torsion coil spring as an urging member 22a A coil portion 22c A free end as a movable portion 23 As a second link as a link device Open link 24 Open lift lever 30 Connecting hole 31 Locking portion 32a Long hole as a guide path 36 Locking lever 37 as a component of a lock mechanism 37 Lock wire 38 Slider portion 39 as an engaging portion included in a link device 39 Connecting portion 40 Door lock device 41 Bracket forming link device and base 42 Open lever as first link forming link device 43 Open link also as second link 44 Torsion coil spring as biasing member 44a Coil portion 44c Free end as a movable part 45 Open lift lever 50 Locking part 50a Notch part 51 Connection part 52 Sub-open lever as a component of latch release means 53 Open lever clip as a connection member 60 Connection hole 61 As a guide path Long hole R Open rod

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Katsunori Fukunaga 2-1-1 Asahi-cho, Kariya-shi, Aichi Aisin Seiki Co., Ltd. (72) Inventor Hiroshi Ichihara 2-1-1 Asahi-cho, Kariya-shi, Aichi Aisin Seiki Co., Ltd. (72) Inventor Atsushi Katsurayama 70-6 Ikegami, Tora-kuni, Kira-cho, Hazu-gun, Aichi Prefecture Aisin Kiko Co., Ltd. Co., Ltd. (72) Inventor Toshiyuki Suzuki 70, Ikegami, Kunimachi, Kira-cho, Hazu-gun, Aichi 6 Aisin Kiko Co., Ltd. Design Limited company F term (reference) 2E250 AA21 HH01 JJ00 KK01 LL01 PP04 QQ01 QQ05

Claims (11)

[Claims] A first link rotatably supported with respect to a base; and a biasing member for biasing the first link so as to return when the first link rotates in one direction. , While being rotatably connected to the first link,
A second link provided to move with the rotation of the first link, wherein the base, the first link and the second link are constituent elements,
In a transmission mechanism of a latch device in which a link device for transmitting motion between the first link and the second link is formed, the first link and the second link use a movable portion of the urging member. A transmission mechanism for a latch device, characterized in that the transmission mechanism is connected to the latch device. 2. The first link is an open lever that is rotated by a latch release unit that is operated to switch a latch mechanism that latches the striker from a latched state to an unlatched state. The transmission mechanism for a latch device according to claim 1, wherein the transmission mechanism is an open link that performs a motion operation for switching the latch mechanism from a latched state to an unlatched state. 3. The base according to claim 1, wherein the open link includes a guideway with which an engaging portion provided on the base engages, and the base moves so that the engaging portion moves along the guideway along with the movement of the open link. 3. The transmission mechanism of the latch device according to claim 2, wherein the transmission mechanism is connected to the transmission. 4. The open link is rotated about a rotation axis that is parallel to a rotation axis of the open lever and that is centered on a connection between the open lever and the open link. Is provided to cause
The transmission mechanism of a latch device according to claim 3, wherein the transmission mechanism is provided on a component of a lock mechanism that prevents the latch member from being switched from a latched state to an unlatched state by the movement of the open link. 5. The open lever and the open link have a connection hole provided on one side thereof, and a locking portion provided on the other side thereof is inserted, and the locking portion is inserted into the connection hole on the side where the connection hole is inserted. The transmission mechanism of a latch device according to any one of claims 2 to 4, wherein the transmission mechanism is connected by being locked to a movable portion of the biasing member. 6. The biasing member is a torsion coil spring, and the torsion coil spring is supported by the base so that a rotation axis of the open lever is located inside the coil portion. The transmission mechanism according to claim 5, wherein the movable portion is a free end of the coil spring, and the free end is locked by the locking portion. 7. The torsion coil spring, wherein the free end is provided such that the open link also urges the open link in the rotation axis direction of the open lever to press the open lever. Item 7. A transmission mechanism for a latch device according to Item 6. 8. The open lever is provided with a connecting portion extending in a direction opposite to a direction in which the locking portion is inserted into the connecting hole in a direction of a rotation axis of the open lever. The transmission mechanism of a latch device according to any one of claims 5 to 7, wherein an open rod that opens the open lever in conjunction with the door handle is connected. 9. The connection part according to claim 8, wherein the connection part is provided with a connection member that locks one end of the open rod by elastic deformation when one end of the open rod is assembled. Transmission mechanism of the latch device. 10. The transmission mechanism of the latch device according to claim 2, further comprising: the latch mechanism; the latch mechanism includes a latch member and a pole; The pawl is rotatably supported by the base, locks the striker at a latch position and releases at an unlatched position, and the pawl is rotatably supported by the base and is engaged at an engagement position. Holding the latch member in the latch position and releasing the latch member in the non-engagement position, wherein the open link rotates the open lift lever supported on the same rotation axis as the pawl. A latch device for rotating a pawl from the engaged position to a disengaged position. 11. The connection hole is provided in the open link, and the locking portion is provided in the open lever, wherein the locking portion is outside the base with respect to the connection hole. An open lever and an open link are provided so as to be inserted in the same direction, and a torsion coil spring is provided for the locking portion such that the free end is engaged outside the open link. The latch device according to claim 10, wherein