JP2526450Y2 - Automatic opening / closing device for trunk lid for automobile - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to an automobile in which a trunk lid is swingably supported on a vehicle body via a trunk hinge, and the trunk hinge is swung by power to open and close an opening of a trunk room with the trunk lid. The present invention relates to an automatic opening / closing device for a boot lid.

[0002]

2. Description of the Related Art In recent years, it has been demanded that the trunk capacity be as large as possible from the viewpoint of ease of use, and in that connection, trunk lids have become larger and heavier. for that reason,
When closing the boot lid, both hands are used to push down the boot lid.

On the other hand, there has been proposed an automatic trunk lid opening / closing device that opens and closes the trunk lid by power.

[0004]

However, in such a conventional automatic opening / closing device for a trunk lid for an automobile, when the trunk lid is operated to close the door, it is necessary to go to a place where an operation switch is located in a vehicle interior or the like. In addition, there was a problem that the usability was not good.

Further, the proposed automatic opening / closing device for the trunk lid is generally large in size, causing a significant reduction in the trunk capacity, and has a problem in that it is not easy to use.

The present invention has been made in view of such a conventional problem, and not only can the trunk lid be opened and closed automatically, but also can be manually switched and operated. An object of the present invention is to provide an automatic trunk lid opening / closing device for a vehicle that is easy to use and hardly reduces the capacity.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, a trunk lid is swingably supported on a vehicle body via a trunk hinge, and the trunk hinge is swung by power. An automatic opening / closing device for a trunk lid for an automobile, which opens and closes an opening of a trunk room, wherein an output arm adjacent to the trunk hinge and rotatably supported concentrically with a swing center of the trunk hinge, A guide rail in which a guide groove extends along a rotation locus of a tip portion of the output arm;
A geared cable routed along the guide groove of the guide rail, and engaged with the geared cable;
A guide member movably fitted in the guide groove, a slide member connected to the tip of the output arm, and an automatic manual switching mechanism attached to the tip of the output arm, the automatic manual switching mechanism, When the output arm is rotated via the slide member by the driving of the geared cable, the trunk lid is detachably supported by a locking member detachably supported by an input unit fixed to the tip end of the trunk hinge. When the latch member engages with the input portion to close the door, and when the trunk lid is manually opened, the latch member is resilient enough to disengage from the input portion. And an urging means for urging the vehicle in a direction to be engaged with the input portion.

[0008]

The trunk lid is swingably supported on the vehicle body via the trunk hinge, and an output arm, a guide rail, and the like constituting an automatic opening / closing device of the trunk lid are arranged adjacent to the trunk hinge. Therefore, there is no need to provide a special mounting place in the trunk, and the trunk volume is hardly reduced as compared with a state in which the automatic opening / closing device is not mounted.

When the trunk lid is open, the geared cable routed along the guide groove of the guide rail is driven by power. When the geared cable is driven, the slide member engaging with the geared cable moves while being guided by the guide groove of the guide rail.

When the slide member moves, the output arm rotates, and the latching member of the automatic manual switching mechanism attached to the tip of the output arm repels the input portion of the trunk hinge by the biasing force of the biasing means. The input unit is pushed and pulled in a relationship where the input unit is engaged. Thereby, the trunk hinge swings to open and close the trunk lid.

When the geared cable is driven by power in a state in which the trunk lid is closed, the trunk hinge swings via the slide member, the output arm, the latch member, and the input portion, and the trunk lid is opened. I do.

When the trunk lid is opened, if the trunk lid is manually opened, the latching member is disengaged from the input portion against the resilience of the urging means due to the operation force at the time of opening. As it is, it can be opened manually.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. Each figure shows an embodiment of the present invention. As shown in FIGS. 1 to 4, the trunk room 1 is provided at the rear of the vehicle body 10a.
A trunk lid 20 for opening and closing the opening 11 of the trunk room 10 is swingably supported via a trunk hinge 21. The trunk lid 20 is urged by a torsion bar 22 in a direction to open the door via a trunk hinge 21.

A support bracket 15 is fixed to a par shell forming a front edge of the opening 11 of the trunk room 10, and the trunk bracket 2 is pivotally connected to the support bracket 15 by a pivot 16.
One front end is pivoted. The front part 23 of the trunk hinge 21 is formed in a substantially U-shape by a bar having a rectangular cross section, and the rear part 24 extends in a substantially horizontal direction. A pin member 25, which is an input portion, is implanted substantially at the center of the front portion 23 of the trunk hinge 21. A roller member 26 is rotatably supported by the pin member 25. A front edge of the trunk lid 20 is fixed to a rear portion 24 of the trunk hinge 21.

An automatic opening / closing device 30 is arranged adjacent to the trunk hinge 21 from the side. The base member 31 of the automatic opening / closing device 30 is fixed to the par shell not shown. The distal end of the pivot 16 is supported by the base member 31. The base member 31 is formed in a quarter circle shape having the pivot 16 concentric. While the output arm 32 is sandwiched between the base member 31 and the trunk hinge 21,
The output arm 32 is rotatably supported by the pivot 16.

As shown in FIGS. 5 to 7, an arc-shaped guide rail 35 centering on the pivot 16 is fixedly provided on a peripheral portion of the base member 31. The periphery of the base member 31 is formed as a guide flange 33 that is bent toward the output arm 32 side. The guide flange 33 is formed with a guide recess 34 whose mouth opens toward the pivot 16. On both sides of the guide recess 34, roller guide grooves 34a are provided in parallel.

Guide recess 34 and roller guide groove 34a
The front end has a horizontal bottom surface, the rear end has a substantially vertical bottom surface, and the bottom surface at an intermediate portion between the front end and the rear end is curved with a constant curvature. The distance between the bottom surface of the intermediate portion and the axis center of the pivot 16 is longer than the distance between each bottom surface of the front end and the rear end and the axis center of the pivot 16. A tapered portion 34d for adjusting elasticity is formed at the end of the horizontal bottom surface 34c of the roller guide groove 34a. Similarly, a tapered portion 34f for adjusting elasticity is formed at the start end of the substantially vertical bottom surface 34e of the roller guide groove 34a. The respective tapered portions 34d and 34f smoothly continue to the middle bottom surface 34b, respectively.

A guide groove 36 having a groove opening on the output arm 32 side is formed in the guide rail 35.
An insertion groove 37 for inserting the geared cable 40 is formed integrally with one of the groove wall portions 37. A slide member 50 is movably fitted in the guide groove 36 of the guide rail 35. A drive motor 45 is disposed at the center in both sides of the front wall of the trunk room 10, a geared cable 40 is extended to the drive motor 45, and a pinion 47 is interlocked with the drive motor 45 via a speed reduction mechanism 46.
The geared cable 40 is engaged.

As shown in FIGS. 1 and 4, a pair of backlash rollers 51 are supported on the slide member 50, and the backlash rollers 51 are in rolling contact with both groove walls from outside. Geared cable 4 for slide member 50
0 are connected to each other. An automatic manual switching mechanism 60 is mounted on the distal end of the output arm 32.

A rectangular guide hole 32a is formed at the tip of the output arm 32. The lower opening of the guide hole 32 a is closed by the cap member 63 of the automatic manual switching mechanism 60. A locking member 65 is fitted in the guide hole 62 so as to be movable in the vertical direction. A locking projection 66 that can be locked to the roller member 26 is formed on the upper surface of the locking member 65, and a storage recess 65 a is formed on the lower surface side of the locking member 65.

The cap member 63 includes a cylinder member 71.
Are fitted movably in the vertical direction. A coil spring 67 is housed in the storage recess 65 a of the hook member 65, and the coil spring 67 is sandwiched between the hook member 65 and the cylinder member 71, and urges the hook member 65 upward, and the cylinder member 71. Is urged downward. Cylinder member 71
The roller shaft 72 penetrates through a long hole 63 a formed in a side wall of the cap member 63 so as to be vertically movable. Roller members 73 are mounted on both ends of the roller shaft 72, and the roller members 73 are rotatably fitted in the roller guide grooves 34a. The coil spring 67, the cylinder member 71, and the like constitute an urging means.

As shown in FIG. 8 to FIG.
A limit switch 81 for detecting the initial position of the output arm 32 is provided at the end of 4c. A limit switch 82 for detecting the end position of the output arm 32 and the opening position of the trunk lid 20 at the same position as the end position of the output arm 32 is provided at the start end of the vertical bottom surface 34e. Further, a limit switch 83 for detecting the closed position of the trunk lid 20 is provided at the end of the tapered portion 34d.

Next, the operation will be described. Trunk lid 20
When the automatic opening / closing device 30 is assembled, the base member 31 of the automatic opening / closing device 30 is provided adjacent to the trunk hinge 21, and the output arm 32, the slide member 50, the automatic manual switching mechanism 60 and the like are provided in the base member 31. Is stored. A drive motor 45 and the like are provided on the front wall of the trunk room 10, and the automatic opening / closing device 30 and the drive motor 4 are provided.
Since the fifth side is connected to the geared cable 40, the automatic opening / closing device 30, the geared cable 40, and the like do not obstruct the storage of luggage, and the trunk volume is not significantly reduced.

In FIG. 10, when the trunk lid 20 is open, the output arm 32 is swung rearward, and the coil spring 67 of the automatic manual switching mechanism 60 is on the vertical bottom surface 34e. As a result, the coil spring 67 is contracted, and the resilient force is large, and the locking projection 66 of the locking member 65 is engaged with the roller member 26 with a large resilient force.

When the drive motor 45 is started in the open state, the pinion 47 rotates and the geared cable 40
Is delivered. When the geared cable 40 is retracted, the slide member 50 connected to the geared cable 40
Is guided by the guide groove 36 of the guide rail 35 and moves in the circumferential direction around the pivot 16. At this time, since the pair of upper and lower rattling rollers 51 roll while abutting on the outside of the groove wall of the guide groove 36, the slide member 50 moves without rattling.

When the slide member 50 moves in the circumferential direction, the output arm 32 rotates clockwise about the pivot 16 in FIG. As a result, the locking projection 66 of the locking member 65 pushes down the roller member 26, the trunk hinge 21 rotates about the pivot 16, and the trunk lid 20 closes.

When the trunk lid 20 is to be closed, the inertial force of the trunk lid 20 is applied to the locking projection 66, but the locking projection 66 of the locking member 65 is engaged with the roller member 26 with a large resilient force. The roller member 2
It does not deviate from 6. When the trunk lid 20 starts to close, the roller member 73 rolls on the tapered portion 34f, the cylinder member 71 lowers, and the elasticity of the coil spring 67 decreases, but the trunk lid 20 starts to close. In this case, the inertia force is small, and in this case, the locking projection 66 of the locking member 65 does not come off the roller member 26.

When the output arm 32 rotates, a closure device (not shown) is operated to pull in the trunk lid 20 and when the trunk lid 20 is fully closed, the lock / unlock device also becomes locked. . Before or after, the cap member 63 comes into contact with the limit switch 83, the limit switch 83 is turned on, and the operation of the closure device is stopped.

Even if the trunk lid 20 is fully closed, the automatic opening / closing device 30 continues to rotate counterclockwise by the driven geared cable 40. As a result, the stopped roller member 26 on the trunk hinge 21 side is turned into the coil spring 67.
The pressing member 65 is pressed down against the urging force. As a result, the hooking member 65 advances as it is, slips through the roller member 26, and comes off the roller member 26. Then, as shown in FIG.
Then, when the limit switch 81 is turned on, the drive motor 45 stops, and the output arm 32 also stops rotating.

In FIG. 7, the trunk lid 20 is closed, the output arm 32 is in a hanging state, and the roller member 26 on the side of the trunk hinge 21 is located rearward of the locking projection 66 of the locking member 65. And is separated from the locking projection 66.

At this time, when the unlock operation is performed using the key,
The trunk lid 20 is biased by the biasing force of the torsion bar 22.
Opens. During this time, the geared cable 40 is not driven, and the output arm 32 does not swing.

Similarly, when the door is closed, the drive motor 4
When 5 is started, the pinion 47 rotates and the geared cable 40 is paid out. When the geared cable 40 is extended, the slide member 50 connected to the geared cable 40 is guided by the guide groove 36 of the guide rail 35 and moves rearward. At this time, since the pair of upper and lower rattling rollers 51 roll while abutting on the outside of the groove wall of the guide groove 36, the slide member 50 moves without rattling.

When the slide member 50 moves rearward, the output arm 32 rotates counterclockwise about the pivot 16 and the locking projection 66 of the latch member 65 moves rearward. Roller member 2 on trunk hinge 21 side
Because the roller 6 is stopped, the roller member 26 sinks the locking projection 66 of the locking member 65 downward against the elasticity of the coil spring 67. As a result, the locking projection 66 of the locking member 65 slips through the roller member 26 and comes into engagement with the roller member 26.

When the locking projection 66 of the locking member 65 is disengaged from the roller member 26, the limit switch 83 is turned on, and a closure device (not shown) is operated to be in an unlocked state. During this time, since the roller member 73 rolls on the tapered portion 34d, the cylinder member 71 is lowered, the coil spring 67 is extended, and the elasticity of the coil spring 67 is reduced.

Further, when the geared cable 40 is driven and the output arm 32 rotates counterclockwise about the pivot 16, the locking projection 66 of the locking member 65 also moves to the pivot 16.
, The roller member 26 follows the locking projection 66 by the urging force of the torsion bar 22 with the movement of the locking projection 66, whereby the trunk lid 20 gradually opens.

Immediately before the trunk lid 20 is fully opened, the roller member 73 rides on the tapered portion 34f, the cylinder member 71 rises, and the urging force of the coil spring 67 increases. Further, when the output arm 32 rotates and the cap member 63 contacts the limit switch 82 as shown in FIG. 10, the limit switch 82 is turned on and the drive motor 45 stops driving.

As shown in FIG. 8, when the trunk lid 20 is manually opened while the trunk lid 20 is opening, the operating force at the time of opening causes the coil spring 67 to open as shown in FIG. Roller member 2 against the elasticity of
6 pushes down the locking projection 66 of the locking member 65 and comes off from the locking projection 66. Thereby, the opening operation can be performed manually as it is.

Further, in order to close the trunk lid 20 which has been opened by the key-operated opening operation, when the output switch 32 is turned on and the output arm 32 is closed, and a command to close the door is given. The output arm 32 once rotates to a state corresponding to the opening of the door, and after the roller member 26 and the engaging member 65 are engaged, the door closing operation is started.

In the above embodiment, the horizontal bottom surface 34 of the roller guide groove 34a for adjusting the elasticity of the coil spring 67
Since the c, the tapered portion 34d and the like are formed integrally with the base member 31, the number of parts is reduced, and the cost can be reduced.

[0040]

According to the automatic opening / closing device of the present invention, the automatic opening / closing device is disposed adjacent to the trunk hinge, so that the automatic opening / closing device hinders the storage of luggage in the trunk room. In addition to this, the automatic manual switching mechanism is attached to the tip of the output arm that swings by power without significantly reducing the trunk volume, so that when the output arm rotates, the locking member When engaging with the input part, closing the trunk lid and manually opening the trunk lid, the latching member comes off the input part against the elasticity and opens the trunk lid manually as it is And can improve usability.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of an automatic opening / closing device for a trunk lid according to an embodiment of the present invention.

FIG. 2 is a perspective view showing an attached state of the trunk lid automatic opening / closing device according to the embodiment of the present invention;

FIG. 3 is a side view of the trunk lid automatic opening / closing device according to the embodiment of the present invention;

FIG. 4 is an exploded perspective view of the trunk lid automatic opening / closing device according to the embodiment of the present invention;

FIG. 5 is a side view of the automatic opening / closing device for the trunk lid showing one embodiment of the present invention.

6 is a sectional view taken along line AA of FIG.

FIG. 7 is a diagram illustrating an operation of the automatic opening / closing device for the trunk lid according to the embodiment of the present invention.

FIG. 8 is a diagram illustrating the operation of the trunk lid automatic opening / closing device according to the embodiment of the present invention.

FIG. 9 is a diagram illustrating an operation of the automatic opening / closing device for the trunk lid according to the embodiment of the present invention.

FIG. 10 is a diagram illustrating the operation of the automatic opening / closing device for the trunk lid according to the embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10a ... Body 10 ... Trunk room 20 ... Trunk lid 21 ... Trunk hinge 25 ... Pin member (input part) 30 ... Automatic opening / closing device 32 ... Output arm 35 ... Guide rail 36 ... Guide groove 40 ... Geared cable 50 ... Slide member 60 ... Automatic Manual switching mechanism 65: Hook member 67: Coil spring (component of urging means)

Claims (1)

(57) [Scope of request for utility model registration] 1. An automatic opening / closing of a trunk lid for an automobile, wherein the trunk lid is swingably supported on a vehicle body via a trunk hinge, and the trunk hinge is swung by power to open and close an opening of a trunk room with the trunk lid. An output arm adjacent to the trunk hinge and rotatably supported concentrically with a swing center of the trunk hinge, and a guide groove extends along a rotation locus of a tip end of the output arm. A guide rail provided, a geared cable routed along a guide groove of the guide rail, and a distal end portion of the output arm which engages with the geared cable and is movably fitted in the guide groove. A sliding member connected to the output arm, and an automatic manual switching mechanism attached to a distal end portion of the output arm. A locking member detachably supported by an input unit fixed to a tip end of a hinge; and closing the trunk lid when the output arm is rotated via the slide member by driving the geared cable. The engaging member is engaged with the input portion, and when the trunk lid is manually opened, the engaging member is disengaged from the input portion with a resilient force such that the engaging member is disengaged from the input portion. And a biasing means for biasing in a direction engaging with the input portion.