JP5440568B2 - Opening and closing mechanism of luggage door for vehicles - Google Patents

Description

  The present invention relates to an opening / closing mechanism for a luggage door for a vehicle.

  Conventionally, a luggage door hinge torsion bar is pivotally supported by a receiving portion provided on a bracket on the vehicle body side, and the luggage door hinge torsion bar is twisted to urge the luggage door in the opening direction to keep the door open. An open / close mechanism for a luggage door for a vehicle is known (for example, see Patent Document 1 below).

Japanese Utility Model Publication No. 54-04151

  However, in the conventional structure, when the luggage stored in the luggage room is taken out, if the luggage is caught on the luggage door hinge torsion bar, the luggage door hinge torsion bar may come off from the receiving portion provided on the bracket on the vehicle body side. It was.

  In consideration of the above facts, the present invention provides a vehicle luggage door that can prevent the luggage door hinge torsion bar from coming off from the receiving portion provided on the bracket on the vehicle body side even when a load or the like is caught on the luggage door hinge torsion bar. The purpose is to obtain an opening and closing mechanism.

An opening / closing mechanism for a vehicle luggage door according to the first aspect of the present invention includes a hinge support attached to a vehicle body on an upper side of a luggage room that is opened and closed by the luggage door, and a hinge arm that connects the luggage door and the hinge support. A luggage door hinge torsion bar that is interposed between the hinge support and a hinge link attached to the hinge arm and urges the hinge arm in a direction in which the luggage door opens, and is provided on the hinge support. A bracket having a U-shaped receiving portion opened in a side view opened on the rear side of the vehicle, and a bracket on which the luggage door hinge torsion bar is pivotally supported at a closed end of the receiving portion; a lower side portion of the receiving portion and the luggage door hinge The luggage is provided on the rear side of the vehicle with respect to the shaft support position of the torsion bar. A A hinge torsion bar and fittable groove, and off direction of the luggage door hinge torsion bar, characterized in that it is directed in the tangential direction of rotation of the hinge link.

  Here, a part of the luggage door hinge torsion bar receives the reaction force of the force that urges the luggage door upward, and the other part pivotally supported by the receiving part of the luggage door hinge torsion bar Power is generated. Therefore, when a load or the like is caught on the luggage door hinge torsion bar and the luggage door hinge torsion bar is pulled away from the receiving part (rear side of the vehicle), the luggage door hinge torsion bar urges the lower side of the receiving part downward in the vehicle. , Move in the direction away from the receiving part (rear of vehicle). However, in the present invention according to claim 1, since the groove is provided in the lower side portion of the receiving portion, the luggage door hinge torsion bar moved to the rear of the vehicle is fitted into the groove. As a result, it is possible to prevent the luggage door hinge torsion bar from being detached from the receiving portion.

According to a second aspect of the present invention, there is provided the opening / closing mechanism of the luggage door for a vehicle according to the first aspect of the present invention, wherein the contact portion between the luggage door hinge torsion bar and the rear wall portion of the groove is the luggage. characterized in that provided on the vehicle upper side from a line drawn tangential direction of rotation of the hinge link from the rotation center of the door hinge torsion bar.

  In the present invention according to claim 2, the contact portion having the above-described configuration is provided on the rear wall portion of the groove. Therefore, in the state where the luggage door hinge torsion bar is fitted in the groove, even if a load in the direction in which the luggage door hinge torsion bar is further removed is applied, the component force of the load in the direction over the groove can be received efficiently. Can do. As a result, the luggage door hinge torsion bar can be prevented from getting over the groove.

  According to a third aspect of the present invention, there is provided a vehicular luggage door opening / closing mechanism according to the present invention, wherein the contact portion is provided at an upper end portion of the rear wall portion of the groove. Features.

  In this invention which concerns on Claim 3, the said contact part is provided in the upper end part of the rear-wall part of the said groove | channel. Therefore, the contact portion can be set farthest from a line drawn in the rotational tangential direction of the hinge link from the rotation center of the luggage door hinge torsion bar. Therefore, it is possible to most efficiently receive the component force in the direction of overcoming the groove in the direction in which the luggage door hinge torsion bar comes off, and it is possible to further prevent the luggage door hinge torsion bar from getting over the groove.

  The opening / closing mechanism for a luggage door for a vehicle according to a fourth aspect of the present invention is the opening / closing mechanism for a luggage door for a vehicle according to any one of the first to third aspects, wherein the luggage door hinge torsion bar is pivotally supported and A U-shaped bush that reduces frictional resistance and wear when the luggage door hinge torsion bar rotates is provided at a pivotal support position of the luggage door hinge torsion bar of the receiving portion.

  In this invention which concerns on Claim 4, since the said bush is provided in the pivotal support position of the luggage door hinge torsion bar, the frictional resistance and wear at the time of rotation of the luggage door hinge torsion bar can be reduced.

  As described above, the luggage door opening / closing mechanism for a vehicle luggage door according to the first aspect of the present invention is excellent in that the luggage door hinge torsion bar can be prevented from coming off from the receiving portion provided on the bracket on the vehicle body side. It has the effect.

  The opening / closing mechanism for the luggage door for a vehicle according to the second aspect of the present invention has an excellent effect that the luggage door hinge torsion bar can be prevented from getting over the groove.

  The opening / closing mechanism for the luggage door for a vehicle according to the third aspect of the present invention has an excellent effect that the luggage door hinge torsion bar can be further prevented from getting over the groove.

  The opening / closing mechanism for the luggage door for a vehicle according to the fourth aspect of the present invention has an excellent effect of reducing frictional resistance and wear when the luggage door hinge torsion bar rotates.

(A) is a side view which shows the luggage door hinge torsion bar removal prevention mechanism in the opening / closing mechanism of the luggage door of FIG. 2, (B) is an enlarged view of the receiving part in (A). It is a side view which shows the opening / closing mechanism of a luggage door. It is an expansion perspective view which shows the opening / closing mechanism of a luggage door. It is a perspective view which shows the vehicle provided with the opening / closing mechanism of the luggage door. (A) is a side view of the opening / closing mechanism of the luggage door showing the rotational tangent direction Y1 of the hinge link 18, and (B) is a luggage door showing the rotational tangential direction Y1 of the hinge link 18 and the detaching direction Y2 of the luggage door hinge torsion bar 20. It is a side view of the opening and closing mechanism. (A) And (B) is a side view which shows the receiving part which concerns on contrast. It is a side view of the receiving part in which the direction of the force which a receiving part receives from a luggage door hinge torsion bar was shown.

  The opening / closing mechanism of the vehicle luggage door according to the embodiment of the present invention will be described with reference to FIGS. The front side in the vehicle front-rear direction is indicated by an arrow FR, the outer side in the vehicle width direction is indicated by an arrow OUT, and the upper side in the vehicle vertical direction is indicated by an arrow UP. First, the opening / closing mechanism of the luggage door for a vehicle according to the present embodiment will be described, and then the mechanism for preventing the luggage door hinge torsion bar from coming off, which is a main part of the present invention, will be described.

(Luggage door opening and closing mechanism)
As shown in FIGS. 3 and 4, the luggage door opening / closing mechanism 10 includes a luggage door 12 that can open and close the luggage room 64 and the outside of the passenger compartment, a hinge arm 14 that supports the luggage door 12, and the hinge arm. 14 and a pair of left and right hinge supports 16 that connect the vehicle body. The luggage door opening / closing mechanism 10 includes a luggage door hinge torsion bar 20 that urges the luggage door 12 in the opening direction by a twisting force, and a hinge link 18 for transmitting the twisting force to the hinge arm 14. Further, the luggage door opening / closing mechanism 10 includes a bracket 22 that pivotally supports the luggage door hinge torsion bar 20. The luggage door opening / closing mechanism 10 is configured with the above six components as main elements.

  Below, each component which comprises the opening / closing mechanism 10 of the luggage door mentioned above is demonstrated. Moreover, about the shape etc. of each component which comprises the opening / closing mechanism 10 of a luggage door, the shape etc. of each component in which the luggage door 12 is a door open state are demonstrated.

  As shown in FIG. 4, the luggage door 12 is supported by a hinge arm 14 described below, and separates the luggage room 64 formed at the rear of the cabin of the vehicle body and the vehicle interior so as to be openable and closable. Although not shown, the luggage door 12 is provided with a rear spoiler, a brake lamp, and the like.

  As shown in FIG. 2, the hinge arm 14 is formed in a substantially C shape with the vehicle upper side opened in a side view. Specifically, the hinge arm 14 includes a first arm portion 14A extending in the vehicle front-rear direction and a first arm portion 14A extending from the rear end portion of the first arm portion 14A to the vehicle upper side via the first bending portion 14C. 2 arm part 14D. Further, the upper end portion of the second arm portion includes a joint portion 14 </ b> E that is joined to the luggage door 12. Further, the hinge arm 14 includes a third arm portion 14G that extends from the front end portion of the first arm portion 14A so as to incline upward from the vehicle lower side. Further, a hinge center 14H for rotating the luggage door 12 so as to be opened and closed is provided at the front end portion of the third arm portion 14G. Further, the first arm portion 14A is provided with a shaft support portion 14B for supporting a hinge link 18 described below. The hinge arm 14 has a hollow structure with a rectangular cross section in order to reduce the weight of the hinge arm 14 and to ensure strength and rigidity.

  As shown in FIGS. 2 and 3, the hinge support 16 includes a base portion 16A formed by extending a substantially hat-shaped cross-section member opened in the vehicle lower side in the vehicle front-rear direction, and a base portion 16A. An opening portion 16C provided on the upper side for projecting a hinge center 14H of the hinge arm 14 upward from the lower side of the vehicle. Further, on the right side and the left side of the opening portion 16C, there are provided a shaft support portion 16D and a shaft support portion 16E that support the hinge center 14H of the hinge arm 14, respectively. Furthermore, the shaft support 16D is provided with a through hole (not shown) for supporting the hinge center 14H, and the shaft support 16E is provided with a screw hole (not shown) for supporting the hinge center. . By inserting a bolt into the through hole and the screw hole, the hinge center 14H is pivotally supported by the shaft support portion 16D and the shaft support portion 16E. Although a large load is applied to the hinge support 16 as the luggage door 12 is opened and closed, a plurality of beads 16B are formed on the hinge support 16 of this embodiment, and the rigidity of the hinge support 16 is ensured.

  One end of the hinge link 18 is pivotally supported across the shaft support 14B of the hinge arm 14 described above, and the other end is a shaft support that supports a luggage hinge torsion bar 20 described below. . As a result, the hinge link 18 has a substantially Y-shape when viewed from the rear. Specifically, the hinge link 18 includes a pair of link base portions 18A and a link base portion 18B, one end portion of which is pivotally supported by a shaft support portion 14B provided on the first arm portion 14A of the hinge arm 14. . The hinge link 18 includes a first panel 18C that connects the other end of the link base 18A and the other end of the link base 18B, and a second panel 18D that extends in the vehicle front-rear direction from the lower surface of the first panel 18C. And. Further, a groove-shaped shaft support portion 18E for supporting a fourth extending portion 20E of a luggage door hinge torsion bar 20 described below is formed at the tip of the second panel.

  As shown in FIG. 3, the luggage door hinge torsion bar 20 is formed by bending one steel bar. Specifically, the luggage door hinge torsion bar 20 includes a base portion 20A extending in the vehicle width direction, a bent portion from the right end portion of the base portion 20A, a front portion extending from the rear of the vehicle, and an inclined portion extending upward from the lower side of the vehicle. And a first extending portion 20B. In addition, the luggage door hinge torsion bar 20 is a second extension portion that is pivotally supported by a receiving portion 30 of a bracket 22 described below and is bent from an end portion of the first extension portion 20B and extends to the right in the vehicle width direction. 20C, and a third extending portion 20D that is bent from the right end portion of the second extending portion 20C and extends from the vehicle front side to the rear side so as to be inclined from the vehicle upper side to the lower side. Furthermore, the luggage door hinge torsion bar 20 is supported by the shaft support 18E of the hinge link 18 and extends from the end of the third extension 20D to the right in the vehicle width direction. A fifth extending portion 20F is provided that is bent from the right end of the extending portion 20E and extends from the vehicle rear to the front and extends from the vehicle lower side to the vehicle upper side. The luggage door hinge torsion bar 20 includes a sixth extending portion 20G that is pivotally supported by a receiving portion 32 of a bracket 22 described below and extends to the right in the vehicle width direction from the front end portion of the fifth extending portion 20F. ing.

  The luggage door hinge torsion bar 20 extends from the left end of the base portion 20A to the left side in the vehicle width direction through a bent portion 20H bent forward of the vehicle and is attached to a shaft support portion 28 of the bracket 22 described below. A seventh extending portion 20I that is pivotally supported is provided. Furthermore, the luggage door hinge torsion bar 20 is bent from the left end of the seventh extending portion 20I in the vehicle width direction and is applied from the front to the rear of the vehicle so as to incline downward from the vehicle and extend downward. 20J and a ninth extending portion 20K that is locked to the locking portion 80 of the body panel and extends to the left in the vehicle width direction from the rear end portion of the eighth extending portion 20J.

  As shown in FIGS. 2 and 3, the bracket 22 is configured integrally with the hinge support 16, and the bracket 22 is provided with a shaft support portion and a front end portion and a rear end portion of a pair of plate members extending in the vehicle front-rear direction. It is configured by forming a notch as a receiving portion. Specifically, the bracket 22 includes a bracket base 24 extending in the vehicle front-rear direction from the left end in the vehicle width direction of the base portion 16A of the hinge support 16 and a right end in the vehicle width direction of the base portion 16A of the hinge support 16. Bracket base 26 extending in the vehicle front-rear direction. Further, at the front end portions of the bracket base portion 24 and the bracket base portion 26, groove-like shaft support portions 28 for supporting the seventh extension portion 20I of the luggage door hinge torsion bar 20 described above are formed. Further, at the rear ends of the bracket base 24 and the bracket base 26, there are a receiving portion 30 and a receiving portion 32 for pivotally supporting the second extending portion 20C and the sixth extending portion 20G of the luggage door hinge torsion bar 20, respectively. Is formed. In this embodiment, the example in which the bracket 22 is configured integrally with the hinge support 16 has been described. However, the bracket 22 and the hinge support 16 may be configured separately.

  The two hinge supports 16 configured integrally with the bracket 22 described above are attached to the vehicle body on the right side and the left side above the luggage room 64 and in the vehicle width direction. Next, the hinge center 14G of the hinge arm 14 on the right side in the vehicle width direction to which the luggage door 12 is attached is attached to the shaft support portions 16D and 16E of the hinge support 16 on the right side in the vehicle width direction. Similarly, the hinge center 14G of the hinge arm 14 on the left side in the vehicle width direction is attached to the shaft support portions 16D and 16E of the hinge support 16 on the right side in the vehicle width direction. As a result, the luggage door 12 can be rotated from the opening position to the closing position.

  Next, the second extending portion 20C and the sixth extending portion 20G of the luggage door hinge torsion bar 20 are pivotally supported by the receiving portion 30 and the receiving portion 32 of the bracket 22 on the right side in the vehicle width direction, and the seventh extending portion 20I is It is pivotally supported by the pivotal support portion 28 of the bracket 22 on the left side in the vehicle width direction. The fourth extending portion 20E is pivotally supported by the pivotal support portion 18E of the hinge link 18. Further, the ninth extending portion 20K is locked to the locking portion 80 of the body panel in a state where the eighth extending portion 20J is urged in the direction of the arrow F, whereby a twisting force is generated in the luggage hinge torsion bar. . By transmitting this twisting force to the hinge arm 14 via the hinge link 18, the hinge arm 14 holds the luggage door 12 in the open state. In the present embodiment, as shown in FIG. 3, another luggage door hinge torsion bar 20 is attached substantially symmetrically about the center of the vehicle width as an axis of symmetry.

(Luggage door hinge torsion bar removal prevention mechanism)
Next, the receiving part 30 of the bracket 22 to which the mechanism for preventing the separation of the luggage door hinge torsion bar, which is the main part of the present invention, is applied will be described. In addition, since the main structures of the receiving part 30 and the receiving part 32 are the same, the receiving part 30 is demonstrated below and description about the receiving part 32 is abbreviate | omitted.

  As shown in FIG. 1 (A), a receiving portion 30 is provided at the rear end of the bracket 22 and is U-shaped and opens rearward of the vehicle in a side view. Specifically, the receiving portion 30 includes a lower side portion 40 extending in the vehicle front-rear direction, a curved portion 42 curved from the front end portion of the lower side portion 40 toward the vehicle upper side, and an upper end portion of the curved portion 42 extending rearward of the vehicle. By including the existing upper side portion 44, the receiving portion 30 has a U-shape that opens toward the rear of the vehicle. Further, the lower side portion 40 is inclined downward from above the vehicle from the front to the rear of the vehicle. Further, the curved portion 42 which is the closed end of the receiving portion 30 is a pivot support position C where the luggage hinge torsion bar 20 is pivotally supported.

  Further, in the present embodiment, the bush 70 that supports the luggage door hinge torsion bar 20 and reduces frictional resistance and wear when the luggage door hinge torsion bar 20 rotates is provided. It is provided at the position C to be supported. Therefore, the lower side portion 40 is divided into a lower side portion 40A of the bush 70 and a lower side portion 40B of the bracket base 24, but a step difference is not generated as much as possible at the connection portion between the lower side portion 40A and the lower side portion 40B. . Similarly to the lower side portion 40, the upper side portion 44 is divided into an upper side portion 44A of the bush 70 and a lower side portion 44B of the bracket base 24, but there is a step as much as possible at the connecting portion between the lower side portion 44A and the lower side portion 44B. It does not occur. In addition, although the copper-type material is used for the bush 70, the bush of other steel-type materials and the bush of the resin-type material excellent in self-lubricating property may be used.

  Next, the groove 50 as a mechanism for preventing the luggage door hinge torsion bar from coming off formed in the receiving portion 30 will be described.

  As shown in FIG. 1B, the groove 50 is provided on the lower side portion 40 of the receiving portion 30 and on the vehicle rear side with respect to the pivot support position C of the luggage door hinge torsion bar 20. The groove 50 includes a rear wall portion 52 extending from the lower side portion 40 of the receiving portion 30 to the vehicle lower side, a bottom wall portion 54 extending from the lower end portion of the rear wall portion 52 to the front of the vehicle, and a bottom wall portion. And a front wall portion 56 extending from the front end portion of the vehicle 54 to the upper side of the vehicle. Therefore, the groove 50 has a rectangular groove shape in which the lower side portion 40 of the receiving portion 30 is cut out in a rectangular shape in a side view.

  In addition, the luggage door hinge torsion bar 20 comes into contact with the rear wall portion 52 of the groove 50 at an intermediate portion in the height direction. Hereinafter, the contacted part is referred to as “contact part 52A”. In the present embodiment, the contact portion 52A is provided on the upper side of the vehicle with respect to the line l drawn in the rotational tangent direction Y1 of the hinge link 18 from the rotation center X of the luggage door hinge torsion bar 20. The contact portion 52A is provided on the upper end portion 52B of the rear wall portion 52. As shown in FIG. 5A, the rotational tangent direction Y1 of the hinge link 18 means that the hinge link 18 is pivotally supported at the pivotal support position C of the luggage door hinge torsion bar 20 and the luggage door is open. This refers to the rotational tangential direction Y1 of the shaft support 18E. Moreover, the upper end part 52B of the rear wall part 52 means the upper end part 52B except for the curved part 52C of the rear wall part 52, as shown in FIG.

  Furthermore, as shown in FIG. 5B, in this embodiment, in order to facilitate the assembly of the luggage hinge torsion bar 20, the rotational tangent direction Y1 of the hinge link 18 and the disengagement direction Y2 of the luggage door hinge torsion bar 20 Have substantially the same configuration. The direction Y2 in which the luggage door hinge torsion bar 20 is removed is defined as a hinge link from the rotation center X of the luggage door hinge torsion bar 20 when the luggage door hinge torsion bar 20 is pivotally supported at the pivot position C and the luggage door is open. This refers to the direction Y2 toward the 18 shaft support portions 18E.

(Operation and effect of this embodiment)
Next, the operation and effect of this embodiment will be described.

  When the luggage door 12 is in the open state, the fourth extension portion 20E of the luggage door hinge torsion bar 20 receives the reaction force of the force that urges the luggage door 12 in the door opening direction, so that the second extension portion 20C Produces a downward force on the vehicle. Therefore, when a load or the like is hooked on the luggage door hinge torsion bar 20 and the second extending portion 20C is pulled in a direction (rear of the vehicle) to be removed from the receiving portion 30, the second extending portion moves the lower side portion 40 of the receiving portion 30 to the vehicle. While urging downward, it moves in a direction away from the receiving part 30 (rear of the vehicle).

  Here, as shown in FIG. 6A, in the case of the receiving portion 300 in which the groove 50 is not formed as a mechanism for preventing the luggage door hinge torsion bar from coming off, a load or the like is caught on the luggage door hinge torsion bar 20, and the second When the extending portion 20C is pulled in a direction (rear of the vehicle) that is separated from the receiving portion 300, the second extending portion 20C of the luggage door hinge torsion bar 20 may be disengaged from the receiving portion 300.

  However, in this embodiment, as shown in FIG. 2, when the luggage door hinge torsion bar 20 moves in a direction away from the receiving portion 30, the luggage door hinge torsion bar 20 is fitted in the groove 50. As a result, the luggage door hinge torsion bar 20 can be prevented from being detached from the receiving portion 30.

  Further, in the present embodiment, the contact portion 52A is provided on the vehicle upper side with respect to a line l drawn in the rotational tangent direction of the hinge link 18 from the rotation center X of the luggage door hinge torsion bar 20. Therefore, even when a load is applied in a direction in which the luggage door hinge torsion bar 20 is further detached in a state in which the luggage door hinge torsion bar 20 is fitted in the groove 50, a component force in the direction over the groove 50 of the load is efficiently received. be able to. As a result, the luggage door hinge torsion bar 20 can be prevented from getting over the groove 50.

  Further, in the present embodiment, the contact portion 52 </ b> A is provided on the upper end portion 52 </ b> B of the rear wall portion 52. Therefore, the contact portion 52B can be set farthest from a line drawn from the rotation center X of the luggage door hinge torsion bar 20 in the rotational tangent direction Y1 of the hinge link 18. Therefore, it is possible to most efficiently receive the component force in the direction over the groove 50 of the load in the direction in which the luggage door hinge torsion bar 20 comes off, and to further prevent the luggage door hinge torsion bar 20 from over the groove 50. .

  In the present embodiment, since the bush 70 is provided at the pivot support position C, it is possible to reduce the frictional resistance caused by the sliding of the receiving portion 30 and the luggage hinge torsion bar 20, and the receiving portion and the luggage hinge torsion. The bar itself can be prevented from being worn.

  Further, in the present embodiment, the rotational tangent direction Y1 of the hinge link 18 and the disengagement direction Y2 of the luggage door hinge torsion bar 20 are substantially the same. Such a layout is easy to assemble the luggage door hinge torsion bar 20, but the luggage door hinge torsion bar 20 is often easily detachable from the receiving portion 30. However, in the present embodiment, since the groove 50 described above is provided, the luggage door hinge torsion bar 20 can be prevented from being detached from the receiving portion 30, and the luggage door hinge torsion bar 20 can be easily assembled. In order to prevent the luggage door hinge torsion bar 20 from being detached from the receiving portion 30, it is conceivable to provide a hook F as shown in FIG. 6B. In this case, the luggage door hinge torsion bar 20 is attached to the hook F. It is conceivable that the assembling property of the hooking luggage door hinge torsion bar 20 is deteriorated.

  Further, as shown in FIG. 7, when the luggage door 12 is engaged with the groove 50 and the luggage door 12 is changed from the open state to the closed state, the receiving portion 30 receives the force received from the luggage door hinge torsion bar 20. The direction changes from the direction of F1 to the direction of F2. As a result, the luggage door hinge torsion bar 20 fitted in the groove 50 returns to the pivot support position C that is originally pivotally supported. Therefore, the next time the luggage door 12 is opened, the luggage door hinge torsion bar 20 rotates at the pivotal support position C where the luggage door hinge torsion bar is originally pivoted, so that the twisting force of the luggage door hinge torsion bar 20 as set is obtained. be able to.

  In the present embodiment, an example in which the groove 50 serving as a mechanism for preventing the luggage door hinge torsion bar from coming off is provided in the receiving portion 30 and the receiving portion 32 has been described. If it is provided on either side, the luggage door hinge torsion bar can be prevented from being detached from the receiving portion.

  In the present embodiment, the example in which the twisting force of the luggage door hinge torsion bar 20 is transmitted to the hinge arm 14 via the hinge link 18 has been described. However, the luggage door hinge torsion bar 20 may be directly attached to the hinge arm 14. good.

  Although one embodiment of the present invention has been described above, the present invention is not limited to the above, and various modifications other than the above can be implemented without departing from the spirit of the present invention. Of course.

10 Luggage door opening and closing mechanism
12 Luggage door
14 Hinge arm
16 Hinge support
18 Hinge link
20 Luggage door hinge torsion bar
22 Bracket
30 receiving part
32 receiving part
40 Lower side
40A Lower side
40B Lower side
50 grooves
52 Rear wall
52A contact area
52B Upper end
64 luggage rooms
70 bush
C Shaft support position

Claims (4)

A hinge support attached to the vehicle body above the luggage room that is opened and closed by the luggage door;
A hinge arm connecting the luggage door and the hinge support;
A luggage door hinge torsion bar interposed between the hinge support and a hinge link attached to the hinge arm and biasing the hinge arm in a direction in which the luggage door opens;
A bracket provided on the hinge support, having a U-shaped receiving portion in a side view opened on the vehicle rear side, and a bracket on which the luggage door hinge torsion bar is pivotally supported at a closed end of the receiving portion;
A groove provided on the lower side of the receiving portion and on the vehicle rear side relative to the pivotal support position of the luggage door hinge torsion bar; and a groove into which the luggage door hinge torsion bar can be fitted;
Have
An opening / closing mechanism for a luggage door for a vehicle , wherein a direction in which the luggage door hinge torsion bar is disengaged is directed to a rotational tangent direction of the hinge link . Wherein said contacting portion between the luggage door hinge torsion bar and the rear wall of the groove, than line drawn tangential direction of rotation of the hinge link from the rotation center of the luggage door hinge torsion bars are provided on the vehicle upper side The opening / closing mechanism of the luggage door for vehicles according to Item 1.   The opening / closing mechanism for a luggage door for a vehicle according to claim 2, wherein the contact portion is provided at an upper end portion of a rear wall portion of the groove.   A U-shaped bush that pivotally supports the luggage door hinge torsion bar and reduces frictional resistance and wear when the luggage door hinge torsion bar rotates is provided at a pivotal support position of the luggage door hinge torsion bar of the receiving portion. The opening / closing mechanism of the luggage door for vehicles according to any one of claims 1 to 3.