JP2561711Y2 - Automotive back door closure device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a latch member which is provided with a striker at one of a back door and a peripheral portion of a door opening, and a latch member which engages with and disengages from the striker at the other of the back door and the peripheral portion of the door opening. The present invention relates to a back door closure device for a motor vehicle, wherein the back door is closed by pulling the latch member through the striker by power.

[0002]

2. Description of the Related Art The present applicant has disclosed a closure device in which when a latch member is engaged with a striker, the latch member is pulled toward the striker side by power to forcibly close a back door. (Journal application 4-47773
No.) in the specification. That is, the earlier application is as shown in FIGS. 7 to 11. When the cam follower 1 rotates by power and the cam follower 1 moves in the cam hole 3 formed in the striker base 2, The striker base 2 swings up and down around the pivot 4, and relatively pulls in the latch member that engages with the striker portion 5 formed on the striker base 2.
Forcibly closes the Trinclid.

[0003]

However, in such a closure device for an automobile back door, since the striker portion 5 moves on an arc-shaped trajectory centered on the pivot 4, the pivot 4 and the striker 5 are not connected to each other. 12 and 13, when the distance between the shafts 4 is smaller than that in the striker entrance groove 6 formed on the other side to be retracted, as shown in FIGS.
Swings sharply, and the groove for entering the striker 6
Interferes with both side edges 7 of the camera. As shown in FIGS. 14 and 15, the distance between the pivot 4 and the striker portion 5 is increased so that the pivot 4 does not interfere with the side edges 7 of the striker entry groove 6, and the pivot 4 largely shakes. If you do not
There has been a problem that the entire device becomes large in the width direction, which hinders downsizing. The present invention has been made in view of such a conventional problem, and the striker does not interfere with the guide groove on the other side at the time of the retracting operation of the striker, and can be downsized. It is intended to provide a closure device.

[0004]

SUMMARY OF THE INVENTION In order to achieve the above object, the gist of the present invention is to provide a back door (10).
A striker (45) is provided on one of the peripheral edge (12) of the door opening (11) and a striker (4) on the other of the back door (10) and the peripheral edge (12) of the door opening (11).
A latch member (17) engaging and disengaging from 5) and a groove (16a) for entering the striker are provided, and the latch member (17) is moved by the power via the striker (45).
And a back door (10) for closing the back door (10) by closing the back door (10) and the peripheral portion (1) of the back door (10) and the door opening (11).
A support base (20) is fixedly mounted on one side of (2), and the slurker base (40) is mounted on the support base (20) so that the other end can swing about one end by the power.
And a support plate (4) at a position separated from one end of the slider base (40) to the other end.
4), the striker (45) is fixed to the support plate (44), and the latch member (1) is attached to one of the support plate (44) and the support base (20).
7) While a pair of long slots (46) for guides are formed in a direction parallel to the direction of drawing in, the pair of guides are formed in the other of the support plate (44) and the support base (20). The striker base (40) swingably guides the striker (45) in a linear direction when the striker base (40) swings, and the striker enters the striker. Groove (16
a) guide pins (2) for preventing the groove
6) is a closure device for an automobile back door, wherein

[0005]

When the back door (10) is open, the latch member (17) is not engaged with the striker (45), and the striker base (40) is in a standby position.

When the back door (10) is closed, the latch member (17) is engaged with the striker (45), and, for example, the locking plate is connected to the latch member (17).
And the latch member (17) is restrained in the engaged state. When the latch member (17) is engaged with the striker (45), the power causes the striker base (40) to swing in one direction, causing the latch member (17) to move through the support plate (44) and the striker (45). Pull in. At this time, guide pins (2) are inserted into the pair of guide slots (46).
Since the support plate (44) moves linearly irrespective of the swinging motion of the striker base (40), the striker (45) is moved relative to the striker (45). The groove (16a) is prevented from swinging toward the groove side edge, and the groove (1) for entering the striker is prevented.
It does not interfere with the side edge of 6a).

Similarly, when the striker base (40) is swung in the other direction by the power to push back the latch member (17) via the support plate (44) and the striker (45), the support plate is also used. Since the (44) moves linearly, the striker (45) is prevented from swinging toward the groove side edge in the striker entry groove (16a), and is located at the side edge of the striker entry groove (16a). There is no interference.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 to 6 show an embodiment of the present invention. As shown in FIGS. 1 to 3, a lock mechanism 15 is provided at the center of the rear edge of the back door 10. Lock mechanism 15
Is a lock base 16 having a striker entry groove 16a formed at the lower center thereof, and a latch member 17 which is swingably supported by the lock base 16 and engages / disengages with the striker 45.
And the latch member 17 comes into contact with the latch member 17 to restrain the latch member 17 in a state of being engaged with the striker 45, and the latch member 17 is separated from the striker 45 to release the latch member 17.
And a locking plate (not shown) supported by the lock base 16 so as to be swingable at a release position where the locking plate is disengaged from the lock base 16. The latch member 17 is urged in a direction to separate from the striker 45, and a locking plate (not shown) is urged in a direction to restrain the latch member 17. A weather strip 13 is attached to the periphery of the door opening 11, and a closure device 20 a is attached to the periphery 12 of the door opening 11 corresponding to the lock mechanism 15.

A peripheral portion 12 of the door opening 11 is formed in a substantially rectangular closed cross section, and the closure device 2 is provided in a space of the closed cross section.
0a is mounted. The closure device 20a includes a support base 20, a power unit 30, and a striker base 40. The support base 20 is provided with a stepped portion 21 at the center in the front-rear direction.
2 is bolted via a spacer 23 to the inner surface side of the inner panel 13 constituting the upper member of the peripheral portion 12. A power section 30 is bolted to the back side of the lower section 24 of the support base 20. A pivot pin 25 is erected on the lower portion 24 of the support base 20.
As a result, one end of the striker base 40 can swing between a retraction start position in which the other end is raised as shown in FIG. 4 and a retraction end position in which the other end is lowered as shown in FIG. Is pivoted to. A support plate 44 is connected to a position separated from one end of the striker base 40 to the other end, and a striker 45 formed by bending a bar-shaped material into an inverted U-shape is fixed to the support plate 44.

A pair of guide slots 46 are formed at both sides of the support plate 44 with the striker 45 as a center. The guide slots 46 extend in a direction parallel to the direction in which the latch member 17 is pulled in. It is a long slot. In the upper portion 22 of the support base 20, a guide pin 26 that fits into a long slot 46 for guide so as to be relatively movable is implanted. The longitudinal direction of the pair of guide slots 46 is such that the longitudinal direction thereof is the latch member 1.
It is only necessary that the direction is parallel to the direction in which 7 is pulled in.
For example, it may be provided in parallel on one side of the striker 45. Further, the pair of guide slots 46 may be provided in a line. At this time, a pair of guide slots 46 are connected to form one slot, and the slots are separated from each other in the longitudinal direction.
Two guide pins 26 may be fitted. Support plate 4
4, a long connecting hole 48 is formed in a direction substantially perpendicular to the drawing direction, and a connecting pin 49 implanted in the striker base 40 can be displaced in the long direction. Is fitted. The closer the support plate 44 is to the pivot pin 25 side, which is the center of the swing of the striker base 40, the more the connecting pin 49 becomes when the striker base 40 is swung to retract the latch member 17.
In this case, the length of the connecting long hole 48 may be increased in order to make a large relative displacement in the inside 8.

At the other end of the support base 20, a retracting mechanism 50 as a driving mechanism for retracting the latch member 17 via the striker 45 is mounted. Retraction mechanism 50
Has a cam groove 41 formed at the other end of the striker base 40 and a disk-shaped output arm 55 rotatably supported at the other end of the striker base 40. A cam follower 56 is mounted on the shaft, and the cam follower 56 is movably fitted in the cam groove 41. FIG.
As shown in the figure, the input shaft 5
7 are planted. A key portion 58 is formed at one end of the input shaft portion 57, and the key portion 58 penetrates the support base 20 and protrudes toward the power unit 30 fixed to the front side of the support base 20. The power unit 30 includes a drive motor 35 and a speed reducer 36.

Next, the operation will be described. When the drive motor 35 is started, the power of the drive motor 35 can be transmitted to the input shaft 57 on the retraction mechanism 50 side. In the state where the back door 10 is open, as shown in FIG. 4, the striker base 40 is raised and is at the retraction start position.

When the back door 10 is closed, the striker 45 relatively enters the striker entry groove 16a formed in the lock base 16, and the latch member 17 is engaged with the striker 45, and the striker 45 is shown in FIG. The omitted locking plate is locked by the latch member 17, and the latch member 1
7 is locked in the engaged state. When the latch member 17 is engaged with the striker 45, the output arm 55 is rotated via the input shaft 57 by the rotation of the drive motor 35, and the retraction mechanism 50 is operated.

When the output arm 55 rotates, the cam follower 56 of the output arm 55 is located at an intermediate position between one end and the other end of the cam groove 41 of the striker base 40, and as shown in FIGS. Cam groove 4 of base 40
1 moves toward one end in the groove. Accordingly, the striker base 40 swings downward around the pivot pin 25, and the other end of the striker base 40 is pulled down.

When the other end of the striker base 40 is pulled down, the latch member 17 is pulled in via the support plate 44 and the striker 45. At this time, since the guide pins 47 are guided by the pair of guide slots 46 and relatively move, the striker base 40 swings about the pivot pins 25, but the support plate 44 is linear. And the striker 45 does not swing toward the groove side edge in the striker entry groove 16a, so that it does not interfere with the side edge of the striker entry groove 16a.

At this time, as the striker base 40 swings about the pivot pin 25, the connecting pin 49 moves relatively in the connecting long hole 48, so that the striker base 40 The difference in the relative operation with respect to the support plate 44 can be absorbed, and the support plate 44 can move smoothly. Further, the output arm 5
When the cam follower 56 moves from one end to the other end in the cam groove 41 of the striker base 40 as shown in FIGS. 5 and 1, the striker base 40 swings, The striker 45 pulls in the latch member 17, the back door 10 is closed, the drive motor 35 is stopped, and before and after, the door opening 11 bends the weather strip 13 and is completely closed. Also at this time, the support plate 44 moves linearly, and the striker 45 does not swing to the groove side edge in the striker entry groove 16a, so that the striker 45 interferes with the side edge of the striker entry groove 16a. There is no.

When the back door 10 is completely closed, the output arm 55 may be rotated by power to open the back door 10. The output arm 55 rotates, the cam follower 56 moves in the cam groove 41 toward the other end, and the striker base 40 moves from the retracted end position shown in FIG. 1 to the intermediate position shown in FIG. It swings toward the retraction start position. Eventually, the drive motor 35
Stops, and before and after, the striker base 40 returns to the initial retraction start position.

At this time, the striker base 40 swings upward about the pivot pin 25 and the support plate 4
Although the latch member 17 is pushed in via the striker 4 and the striker 45, the support plate 44 moves linearly, and the striker 45 does not interfere with the side edge of the striker entry groove 16a. In the above embodiment, the guide pin 26 is provided on the support base 20 side and the guide long hole 46 is provided on the support plate 44 side. However, it is needless to say that the reverse mode may be adopted. Nor.

[0019]

According to the present invention, the striker base swings around the one end at the other end by power, and the latch member is moved through the support plate and the striker. Pull in,
On the contrary, when pushing back, the guide pins are guided by the pair of guide slots and move relatively, so that the support plate moves linearly regardless of the swinging motion of the striker base. As a result, the striker does not swing to the groove side edge side in the striker entry groove formed on the other side, so that it does not interfere with the side edge of the striker entry groove and one end of the striker base. Even when the striker is connected to a position close to the striker, the support plate moves linearly and does not interfere with the side edge of the groove for entering the striker. Can be concatenated,
The entire device can be made compact without spreading in the width direction.

[Brief description of the drawings]

FIG. 1 is a plan view of a closure device according to an embodiment of the present invention.

FIG. 2 is a perspective view of the closure device according to the embodiment of the present invention in a mounted state.

FIG. 3 is a cross-sectional view of the closure device according to the embodiment of the present invention in a mounted state.

FIG. 4 is an operation explanatory view of the closure device showing one embodiment of the present invention.

FIG. 5 is an operation explanatory view of the closure device showing one embodiment of the present invention.

FIG. 6 is an operation explanatory view of the closure device showing one embodiment of the present invention.

FIG. 7 is an exploded perspective view of a conventional closure device.

FIG. 8 is an operation explanatory view of a conventional closure device.

FIG. 9 is an operation explanatory view of a conventional closure device.

FIG. 10 is an operation explanatory view of a conventional closure device.

FIG. 11 is an operation explanatory view of a conventional closure device.

FIG. 12 is an operation explanatory view of a conventional closure device.

FIG. 13 is an operation explanatory view of a conventional closure device.

FIG. 14 is an operation explanatory view of a conventional closure device.

FIG. 15 is an operation explanatory view of a conventional closure device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Back door 11 ... Door opening 16 ... Lock base 16a ... Striker entry groove 17 ... Latch member 20a ... Closure device 20 ... Support base 26 ... Guide pin 30 ... Power part 40 ... Striker base 41 ... Cam groove 44 ... Support Plate 45 ... Striker 46 ... Long hole for guide 50 ... Retraction mechanism

Claims (1)

(57) [Scope of request for utility model registration] A striker is provided on one of a back door and a peripheral edge of a door opening, and a latch member engaging with and disengaging from the striker and a groove for entering the striker are provided on the other of the back door and the peripheral edge of the door opening. A back door closing device for an automobile, wherein the back door is closed by pulling the latch member through the striker by power, and supported by one of the back door and a peripheral portion of a door opening. A base is fixedly mounted on the support base, and the power is pivotally connected to the other end of the striker base so that the other end can be pivoted around the one end by the power. A support plate is connected to a portion separated from the support plate, the striker is fixed to the support plate, and the latch is attached to one of the support plate and the support base. While a pair of long holes for guide are long in a direction parallel to the direction in which the member is drawn in, each of the pair of long holes for guide is movably fitted to the other of the support plate and the support base. When the striker base swings, the support plate guides the support plate so as to be movable in a linear direction, and a guide pin for preventing the striker from swinging to the groove side edge in the striker entry groove is provided. An automotive back door closure device, which is fixed.