JP3942276B2 - Automobile trunk lid closure device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
In the present invention, a striker is provided on one of the trunk lid and the peripheral edge of the trunk opening, and a lock mechanism is provided on the other of the trunk lid and the peripheral edge of the trunk opening, and the striker is used for entering the striker of the lock mechanism. The present invention relates to a closure device for an automobile trunk lid in which the lock mechanism is retracted through the striker to close the trunk lid by entering a groove of the lock mechanism and engaging a latch member of the lock mechanism.
[0002]
[Prior art]
As a conventional automobile trunk lid closure device, for example, a lock mechanism is arranged on the trunk lid side, a closure device is arranged on the peripheral edge side of the trunk opening, the lock mechanism has a lock base and a latch member, The closure device has a support base, a striker base and a striker. The striker base is pivotally supported by the support base so that the other end can swing around the one end, and the striker is moved from one end of the striker base to the other. It is fixed at an intermediate position spaced apart on the end side, and is supported so as to be swingable between a standby position and a retracted position via a striker base. When the trunk lid is closed, the striker rising to the standby position enters the striker entry groove formed in the lock base, the latch member engages, the retracting mechanism of the closure device operates, and the striker latches In a state where it is engaged with the member, it is lowered from the standby position to the retracted position, the latch member is retracted, and the trunk lid is forcibly closed.
[0003]
The striker that is fixed at an intermediate position spaced from one end of the striker base to the other end, enters the striker entry groove, and engages the latch member is centered on one end of the striker base. When swinging between the standby position and the retracted position, the swinger enters the groove width direction of the striker entry groove.
[0004]
In addition, the striker is assembled to the striker base, and the striker base is assembled to the support base, and variations in striker swinging occur due to each assembly allowable error.
[0005]
Therefore, when the striker swings, the groove width is wide enough so that it does not touch the groove side edge of the striker entry groove to prevent generation of abnormal noise due to the striker touch and wear of the striker etc. .
[0006]
[Problems to be solved by the invention]
However, in such a conventional trunk lid closure device for an automobile, if the groove width of the striker entering groove is set sufficiently wide, the rigidity of the lock base of the lock mechanism is lowered, so the rigidity of the lock base is lowered. In order to prevent this, it is necessary to increase the thickness of the lock base, to reinforce it, or to increase the size of the lock base.
[0007]
The present invention has been made paying attention to such a conventional problem, and the front end side of the engaged portion of the striker entering prior to the striker entering groove is the groove width within the striker entering groove. Consider the state that swings in the direction, make the width of the engaged portion of the striker narrower than the base end side so that the engaged portion of the striker does not touch the groove side edge of the groove for entering the striker For example, a trunk lid for an automobile that can maintain a high rigidity of the lock base and reduce the size of the lock mechanism without increasing the width of the groove for entering the striker as much as the tip of the engaged portion swings. The object is to provide a closure device.
[0008]
[Means for Solving the Problems]
The gist of the present invention for achieving the object lies in the invention of the next section .
[0010]
[ 1 ] A striker (45) is provided on one of the trunk lid (10) and the peripheral edge (12) of the trunk opening (11), and the trunk lid (10) and the peripheral edge (12) of the trunk opening (11) Is provided with a lock mechanism (15), and when the striker (45) enters the striker entry groove (16a) of the lock mechanism (15) and engages the latch member of the lock mechanism (15). A closure device for an automobile trunk lid (10) that pulls in the latch member via the striker (45) by power to close the trunk lid (10), comprising: a support base (20); In what has a striker base (40),
The support base (20) is fixed to one of the trunk lid (10) and the peripheral edge (12) of the trunk opening (11),
The striker base (40) is pivotally attached to the support base (20) so as to be swingable about one end portion.
The striker base (40) is fixed at a position spaced from one end to the other end side, and swings between a pull-in start position and a pull-in end position integrally with the striker base (40). (45) is fixed,
The striker (45) has an engaged portion (48) that enters the striker entry groove (16a) and engages a latch member,
The engaged portion (48) of the striker (45) is formed in a trapezoidal cross-sectional shape having an upper end on the tip side that enters prior to the striker entry groove (16a). A closure device for an automobile trunk lid (10).
[0011]
Next, the operation of the invention will be described.
In one configuration of the present invention, when the trunk lid (10) is closed, the engaged portion (48) of the striker (45) enters the striker entry groove (16a) and engages with the latch member. When the engaged portion (48) of the striker (45) is engaged with the latch member, the closure device is started, and the striker (45) is integrated with the striker base (40) from the drawing start position by power. Swing to end position. Thereby, the striker (45) pulls the latch member, and the trunk lid (10) is closed against the restoring force of the weather strip provided along the peripheral edge (12) of the trunk opening (11). .
[0015]
When the striker (45) swings from the drawing start position to the drawing end position, the engaged portion (48) of the striker (45) enters the striker entry groove (16a) and engages the latch member. To do. When the engaged portion (48) of the striker (45) is engaged with the latch member, the closure device is started, and the striker (45) is integrated with the striker base (40) from the drawing start position by power. Swing to end position.
[0016]
When the striker (45) swings integrally with the striker base (40) from the pull-in start position to the pull-in end position, the engaged portion (48) that has entered prior to the striker entry groove (16a). ) Swings in the groove width direction of the striker entry groove (16a).
[0017]
Since the engaged portion (48) is formed in a trapezoidal cross-sectional shape with its tip side as the upper base, the tip side of the engaged portion (48) is in the groove width direction of the striker entry groove (16a). Even if it swings, the tip end side of the engaged portion (48) does not touch the groove side edge of the striker entry groove (16a), and the tip portion side of the engaged portion (48) swings as it is for the striker entry. There is no need to increase the groove width of the groove (16a). Moreover, generation | occurrence | production of the abnormal noise by touching and abrasion of a striker (45) etc. can be prevented.
[0018]
Further, in the engaged portion (48) of the striker (45), the base end side that is the lower base of the trapezoidal cross-sectional shape is wide, and the base end side is also the side that engages with the latch member. 45) The portion where the engaged portion (48) engages with the latch member is increased, and the engagement strength can be maintained high.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
1 to 9 show an embodiment of the present invention.
As shown in FIGS. 1 to 3, 8, and 9, a lock mechanism 15 is provided at the center of the rear edge of the trunk lid 10. The lock mechanism 15 includes a lock base 16 having a striker entry groove 16a formed in the lower center thereof, a latch member (not shown) that is swingably supported by the lock base 16 and is engaged with and disengaged from the striker 45. The base 16 includes a locking plate (not shown) supported so as to be swingable between a restraining position (position where the latch member is restrained) and a release position (position where the latch member is released).
[0020]
A weather strip (not shown) is attached to the periphery of the trunk opening 11, and a closure device 20 a is attached to the periphery 12 of the trunk opening 11 corresponding to the lock mechanism 15.
[0021]
The closure device 20 a is provided with a support base 20 fixed to the inner panel of the peripheral edge 12 of the trunk opening 11 and a striker base 40.
[0022]
The support base 20 is continuously formed on the support upright wall 22 through the stepped portion 23 through the stepped portion 23 and the support standing wall 22 forming a substantially vertical surface. And a standing wall 24. A through hole 25 is formed in the stepped portion 23 so as to pass from the front side to the rear side of the support base 20.
[0023]
A pivot pin 21 is installed on the base member 20, and one end portion of the striker base 40 is raised by the pivot pin 21, and the other end portion is pulled up. 9 is pivotally attached to a retracting end position (bottom dead center) shown in FIG.
[0024]
A striker 45 is integrally formed at an intermediate position spaced from one end of the striker base 40 toward the other end. The striker 45 is a flat plate-shaped bent portion 46 formed by bending the striker base 40 and an upper edge portion of the bent portion 46, and is engaged by forming an engagement hole 47 in the bent portion 46. Part 48.
[0025]
The striker base 40 is slidably supported on the front surface of the support standing wall 22 from one end thereof to an intermediate position.
[0026]
As shown in FIG. 4, the engaged portion 48 of the striker base 40 advances and retreats into the striker entry groove 16 a when the striker base 40 swings between the drawing start position and the drawing end position. The trapezoidal cross-sectional shape is formed with the upper end at the tip side that enters the striker entry groove 16a in advance.
[0027]
The other end of the support base 20, retraction mechanism 50 is mounted a drive mechanism for retracting the latch member via the striker 45. The other end of the striker base 40 is extended along the rear surface side of the support base 20 through the through hole 25. A cam groove 41 is formed at the other end of the striker base 40.
[0028]
The retracting mechanism 50 has a cam groove 41 of the striker base 40 and an output arm 55 rotatably supported at the other end of the support base 20, and a cam follower 56 is pivotally attached to the peripheral portion of the output arm 55. The cam follower 56 is movably fitted in the cam groove 41.
[0029]
An input shaft portion 57 is implanted in the center portion of the output arm 55. A key portion (not shown) is formed at one end of the input shaft portion 57, and the key portion passes through the support base 20 and protrudes toward the power portion 70 fixed to the front side of the support base 20.
[0030]
A drive motor and a speed reducer (both not shown) are accommodated in the housing 71 of the power unit 70. A stop switch 80 is mounted on the other end of the support base 20, and a switch piece 81 of the stop switch 80 is slidably in contact with the periphery of the output arm 55. The peripheral edge of the output arm 55 includes a substantially semicircular portion 55a having a concentric rotation center, and a detected portion 55b and a detected portion 55c respectively formed at both ends thereof. The detected portion 55b is a detected portion for the pull-in start position, and the detected portion 55c is a detected portion for the pull-in end position.
[0031]
As shown in FIGS. 1, 2, 6, and 7, a lever 85 is swingably supported on the support base 20 by a pivot 28. The lever 85 is formed in a substantially L-shaped cross section and has a detection piece 86. The detection piece 86 is in the fully open lever state shown in FIG. 6 to the retraction start position where the striker 45 is engaged with the latch member (the lever state when the top dead center is engaged shown in FIG. 6: the lock base 16 is in the detection piece 86. A state of contact) to a retracting end position (a lever state when the bottom dead center is engaged as shown in FIG. 6: a state in which the lock base 16 has pushed the detection piece). The lever 85 is urged by a winding spring 87 in the clockwise direction in FIG. 6, that is, in the direction of swinging to the lever state when fully opened.
[0032]
Further, as shown in FIG. 6, the lever state when the switch is switched is set in an intermediate state between the lever state when fully opened and the lever state when top dead center is engaged. In addition, a lid state detector 88 is provided to detect a lever state (lid open / closed state) when the switch is switched.
[0033]
FIG. 5 shows a circuit diagram of the closure device 20a. The drive motor of the power unit 70 is connected to the power source via the contact a of the relay R. The coil of the relay R is connected to the output end of the control unit, and a lock switch 90, a stop switch 80 and a lid state detection unit 88 for detecting the state of the locking plate (restraint position or release position) are provided at each input end of the control unit. It is connected to the.
[0034]
Even when the control plate is in the restraining position where the locking plate restrains the latch member and the stop switch 80 is turned on (circuit closed), the detection piece 86 of the lever 85 is moved from the lever state when the switch is switched. If the lid state detection unit 88 is not turned on by swinging toward the fully open lever state, the relay R coil is not energized, and the relay R contact a is kept off (circuit open). The drive motor of the unit 70 is configured to be unstartable.
[0035]
Next, the operation will be described.
In the state where the trunk lid 10 is open, as shown in FIG. 8, the striker base 40 is lifted and is in the retracting start position. At this time, the switch piece 81 of the stop switch 80 protrudes and is in contact with the detected portion 55b. At this time, the locking plate is in the release position and the lock switch 90 is off. As shown in FIG. 6, the detection piece 86 of the lever 85 swings from the lever state when the switch is switched to the lever state when the switch is fully opened, and the lid state detection unit 88 is turned on.
[0036]
As the trunk lid 10 is closed, the lock mechanism 15 eventually approaches the striker 45 from obliquely forward, and the engaged portion 48 that is the tip of the bent portion 46 of the striker 45 is a groove for entering the striker of the lock base 16. 16a enters and engages the latch member. At this time, the impact force from obliquely forward received by the engaged portion 48 of the striker 45 is a support that supports the base end portion of the bent portion 46 of the striker 45 of the striker plate 40 and the vicinity thereof so as to be slidable from the rear. It is reliably received by the standing wall 22 for supporting the base 20.
[0037]
Further, the engaged portion 48 that is the distal end portion of the bent portion 46 of the striker 45 and the support standing wall 22 that slidably supports the proximal end portion of the bent portion 46 of the striker 45 are close to each other. Therefore, the moment generated around the base end portion of the bent portion 46 due to the engaged portion 48 that receives an impact force does not increase, and the striker 45, the striker base 40, and the support standing wall 22 are Even if each rigidity is not increased, it can sufficiently withstand the generated moment.
[0038]
When the engaged portion 48 of the striker 45 engages with the latch member, the locking plate swings to the restraining position, engages with the latch member, and is restrained while the striker 45 is engaged with the latch member. 90 turns on.
[0039]
When the lid state detection unit 88 is turned on and the lock switch 90 is turned on, the drive motor is started, the output arm 55 is rotated via the speed reduction mechanism, and the retracting mechanism 50 is activated.
[0040]
When the output arm 55 rotates, the cam follower 56 of the output arm 55 moves in the groove of the cam groove 41 of the striker base 40. Accordingly, the other end portion of the striker base 40 is pulled down with the one end portion of the striker base 40 as the center. At this time, the striker 45 is guided by the support standing wall 22 of the support base 20 in the vertical direction via the striker base 40.
[0041]
Regardless of the direction in which the striker 45 engages with the latch member, that is, obliquely forward with respect to the vertical direction, the striker 45 is guided by the support standing wall 22 formed on the vertical surface via the striker base 40. Since the striker 45 and the striker base 40 are guided and moved along the vertical plane, the entire closure device 20a is not bulky in the front-rear direction of the vehicle body, and the trunk volume can be increased by the amount not bulky.
[0042]
Further, when the other end portion of the striker base 40 is pulled down with the one end portion of the striker base 40 as the center, the switch piece 81 of the stop switch 80 slides on the substantially semicircular circumferential portion 55 a of the output arm 55.
[0043]
When the striker 45 is integrated with the striker base 40 and swings from the drawing start position shown in FIG. 8 to the drawing end position shown in FIG. 9, the engaged portion 48 of the striker 45 of the striker base 40 has an arcuate locus. The striker approach groove 16a of the lock base 16 draws a substantially linear trajectory.
[0044]
Therefore, as shown in FIGS. 4A to 4C, the engaged portion 48 of the striker 45 of the striker base 40 has a tip portion on the right side in the striker entry groove 16 a of the lock base 16. From the shaken state (upper state), the tip portion tilts slightly to the left (lower state). As shown by the solid line in FIG. 4, the engaged portion 48 of the striker 45 is formed in a trapezoidal cross-sectional shape whose tip is narrower than the base end, so that the engaged portion 48 of the striker 45 is inclined. However, the engaged portion 48 of the striker 45 does not interfere with the groove side edge of the groove 16a for entering the striker. Thereby, as shown by an imaginary line in FIG. 4, the width of the groove 16 a for entering the striker may be narrower than the engaged portion 48 of the conventional striker 45 formed in a rectangular cross-sectional shape.
[0045]
Further, as shown in FIG. 1, the striker base 40 is assembled based on a reference position (reference hole), but as shown in FIG. Assembling in a left-down state (state in which the other end of the striker base 40 is lowered with respect to the reference position), or as shown in FIG. (The other end of the striker base 40 is raised with respect to the reference position).
[0046]
Thus, even when an assembly tolerance occurs, the engaged portion 48 of the striker 45 is formed in a trapezoidal cross-sectional shape whose tip is narrower than the base end. Even if the tip of the joint portion 48 is inclined, the engaged portion 48 of the striker 45 does not interfere with the groove side edge of the striker entry groove 16a.
[0047]
Further, when the output arm 55 rotates and the cam follower 56 moves in the groove of the cam groove 41 of the striker base 40, the striker base 40 swings, the striker 45 retracts the latch member, and the trunk lid 10 is closed. Eventually, it is detected that the switch piece 81 of the stop switch 80 slides on the detected portion 55c of the output arm 55, the switch piece 81 protrudes, and the striker base 40 swings to the retracting end position. The motor stops and back and forth, the trunk opening 11 is completely closed.
[0048]
The pull-in mechanism 50 pulls in the trunk lid 10 against the case where the restoring force of the weather strip (not shown) provided along the peripheral edge 12 of the trunk opening 11 is large, and bends the weather strip. Thus, the trunk lid 10 can be completely closed.
[0049]
When the striker base 40 is swung from the retract start position shown in FIG. 8 to the retract end position shown in FIG. 9 and the trunk lid 10 is completely closed, an open lever (not shown) is opened. (Omitted) may be operated. As a result, the open lever comes into contact with the locking plate, the locking plate swings to the release position, the lock switch 90 is turned off, the latch member is detached from the striker 45, and the trunk lid 10 can be opened.
[0050]
When the lock switch 90 is turned off, the drive motor of the power unit 70 starts and the output arm 55 rotates. When the output arm 55 rotates, the cam follower 56 moves in the cam groove 41, and the striker base 40 swings from the drawing end position shown in FIG. 9 toward the drawing start position shown in FIG.
[0051]
Further, when the output arm 55 rotates, the cam follower 56 moves in the cam groove 41, the switch piece 81 of the stop switch 80 slides on the substantially semicircular portion 55a of the output arm 55, and the striker base 40 is moved to the original position. The drive motor stops when it detects return to the retract start position. Further, the detection piece 86 of the lever 85 swings to the lever state when the top dead center is engaged as shown in FIG.
[0052]
When the trunk lid 10 is opened and the lock base 16 is raised, the detection piece 86 of the lever 85 is swung clockwise in FIG. 6 by the urging force of the winding spring 87, and the lid is in the lever state when the switch is switched. The state detection unit 88 is turned on and further swung clockwise, so that the lever is in a fully opened state.
[0053]
When the vehicle body is frozen and the trunk lid 10 is opened, the peripheral edge of the trunk lid 10 is not separated from the weather strip, the lock base 16 is not sufficiently raised, and the detection piece 86 of the lever 85 is dead. Even if the locking plate is swung from the release position to the restraining position and the lock switch 90 is turned on in the vicinity of the lever state at the point engagement, the detection piece 86 does not enter the lever state when the switch is switched. Therefore, the lid state detection unit 88 is not turned on, the drive motor of the power unit 70 is not started, and the forced closing operation is prevented again.
[0054]
In the embodiment, the striker 45 is formed integrally with the striker base 40. However, the striker 45 may be formed separately and fixed to the striker base 40.
[0055]
【The invention's effect】
As described above, according to one configuration of the present invention , the engaged portion of the striker is formed in a trapezoidal cross-sectional shape with the tip side being the upper base, so the tip side of the engaged portion is the striker. Even if it swings in the groove width direction of the groove for entering, the tip side of the engaged part does not touch the groove side edge of the groove for entering the striker. It is not necessary to increase the width of the groove, and it is possible to prevent generation of abnormal noise due to touching and wear of a striker or the like. Further, in the engaged portion of the striker, the base end side which is the lower base of the trapezoidal cross-sectional shape is wide, and the base end side is also the side engaged with the latch member, so the engaged portion of the striker is latched. The portion that engages with the member becomes large, and the engagement strength can be maintained high.
[Brief description of the drawings]
FIG. 1 is a front view of a closure device showing an embodiment of the present invention.
FIG. 2 is a perspective view of a closure device in an attached state, showing an embodiment of the present invention.
FIG. 3 is a side view of a closure device showing an embodiment of the present invention.
FIG. 4 is an operation state explanatory diagram of a striker showing an embodiment of the present invention.
FIG. 5 is a circuit diagram of a closure device showing an embodiment of the present invention.
6 is a view taken along arrow VI in FIG. 3;
7 is a view taken along arrow VII in FIG. 6;
FIG. 8 is an operation explanatory view of a closure device showing an embodiment of the present invention.
FIG. 9 is an operation explanatory view of a closure device showing an embodiment of the present invention.
[Explanation of symbols]
R ... Relay 10 ... Trunk lid 11 ... Trunk opening 12 ... Peripheral portion 15 ... Lock mechanism 16 ... Lock base 16a ... Strike entry groove 20 ... Support base 20a ... Closure device 21 ... Pivot pin 22 ... Standing wall 23 for support ... Stepped portion 24 ... Standing wall 25 for mounting ... Through hole 28 ... Pivot axis 40 ... Striker base 41 ... Cam groove 45 ... Strike 46 ... Bending part 47 ... Engagement hole 48 ... Engaged part 50 ... Retraction mechanism 55 ... Output Arm 55a ... substantially semicircular portion 55b ... detected portion 55c ... detected portion 56 ... cam follower 70 ... power supply portion 71 ... housing 80 ... stop switch 81 ... switch piece 85 ... lever 86 ... detection piece 87 ... coil spring 88 ... lid State detector 90 ... Lock switch

Claims (1)

A striker is provided on one of the trunk lid and the peripheral edge of the trunk opening, and a lock mechanism is provided on the other of the trunk lid and the peripheral edge of the trunk opening, and the striker enters the striker entry groove of the locking mechanism. And a closure device for a trunk lid of an automobile, wherein when engaged with a latch member of a locking mechanism, the latch member is pulled by the power via the striker to close the trunk lid, and includes a support base and a striker In what has a base,
The support base is fixed to one of the trunk lid and the peripheral edge of the trunk opening,
The striker base is pivotally attached to the support base so as to be able to swing around one end.
The striker base is fixedly installed at a position spaced from one end portion to the other end portion, and the striker that is integrated with the striker base and swings between a drawing start position and a drawing end position is fixed. ,
The striker has an engaged portion that enters the striker entry groove and engages a latch member;
A closure device for a trunk lid for an automobile, wherein the engaged portion of the striker is formed in a trapezoidal cross-sectional shape with an upper end as a front end that enters prior to the groove for entering the striker.

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