JPH032627Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to the lid hinge structure of an automobile.
In particular, it relates to the so-called torsion bar type in which the lid is always urged in the opening direction by the torsional force of the torsion bar.

(Prior Art) Conventionally, as this type of torsion bar type lid hinge structure, for example, in the case of a lid hinge structure for a trunk lid, as shown in FIGS. 7 and 8, the rear upper end is fixed to the lower surface of the trunk lid a, and the front Hinge base b whose upper end is integrated with the vehicle body
A U-shaped hinge arm c pivotally connected to the hinge arm, a link d having one end pivotally connected to the hinge arm, and a link d disposed in the vehicle width direction in front of the rotation area in the rotational direction of the hinge arm c, the end of which is pivotally connected to the hinge arm c. a torsion bar e that is bent from the support part b ₁ of the hinge base b, and the tip of the bent part e ₁ is connected to the other end of the link d;
A device is known in which the torsion force of the torsion bar e is transmitted to the hinge arm c via the link d (Utility Model No. 51-127524).
(Refer to the publication number, etc.) In addition, the lid hinge structure is provided with a pair of left and right lids for one lid,
One end (bent part) of one lid hinge structure
The other end of the torsion bar e, whose tip (e ₁ ) is connected to the link d, is attached to the hinge base b in the other lid hinge structure and connected to the torsion force adjustment device f, and the torsion force can be adjusted by the torsion force adjustment device f. It is set in.

(Problem to be Solved by the Invention) However, because the torsion bar e is arranged in the vehicle width direction along the rear shelf that partitions the trunk room and the vehicle interior, the torsion bar e is arranged in the vehicle width direction along the rear shelf that partitions the trunk room from the vehicle interior. In order to avoid interference with vehicle body accessories such as the rear cooler unit, it is necessary to curve the central part (the part inside the vehicle body from the support point position of the support part _b1 of the hinge base b) as shown in Fig. 8. be.
Therefore, when the torsion bar e rotates as the trunk lid a opens and closes, the torsion bar e
There was a problem in that the central portion of the hinge base b rotates significantly within the trunk about the support point at the support portion _b1 of the hinge base b, and the effective space within the trunk is substantially narrowed significantly.

The present invention has been made in view of the above, and its purpose is to provide a solution to the case where the torsion bar in the above-mentioned lid hinge structure is in a position where it interferes with the vehicle body equipment. Instead of bending the torsion bar backwards or forwards, the torsion bar itself can be curved backward or forward without impairing the original function of the lid hinge structure, which is to transmit the torsional force of the torsion bar to the lid side and always bias the lid in the open direction. The lid hinge structure is improved so that it is placed in a position where it does not interfere with vehicle body accessories, thereby making it possible to secure a wide effective space such as a trunk room.

(Means for Solving the Problem) In order to achieve the above object, the solution of the present invention is a lid hinge structure for an automobile, in which one end is fixed to the lower surface of the lid and the other end is pivotally connected to the vehicle body. a first link having one end pivotally connected to the vehicle body outside the rotation area in the rotation direction of the hinge arm; one end pivotally connected to the other end of the first link, and the other end being pivotally connected to the hinge the second pivoted to the arm
a third link extending in the longitudinal direction of the vehicle body and having one end pivoted to an intermediate portion of the first link; and a torsion bar whose tip end is connected to the other end of the third link.

(Function) With the above configuration, in the present invention, the torsional force of the torsion bar is transmitted to the hinge arm from the tip of the bent portion of the torsion bar via the third link, the first link, and the second link in order, and This acts as a biasing force on the lid in the opening direction. In this case, since the bent portion of the torsion bar is approximately parallel to the first link, the bent portion of the torsion bar is approximately parallel to the first link.
Similar to the conventional lid hinge structure in which the bent part of the torsion bar is located at the link position and the tip of the bent part is connected to the hinge arm via the link, a predetermined position is applied to the lid depending on the degree of opening of the torsion bar. A biasing force will act.

Moreover, since the torsion bar is located on the lid side from the vehicle body by the length of the third link compared to the conventional lid hinge structure, the central part of the torsion bar can be moved rearward or forward as compared to the conventional lid hinge structure. Even if it is not curved, it will not interfere with vehicle body accessories, and the curved portion will not reduce the effective space such as the trunk room.

Furthermore, the lid is not only supported by its own weight transmitted to the vehicle body through the hinge arm to the pivot joint between the hinge arm and the vehicle body, but also transmitted from the hinge arm through the second link and the first link. Since the first link is also transmitted to and supported by the pivot joint between the first link and the vehicle body, the supporting rigidity of the lid can be increased.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

1 to 3 show a lid hinge structure for a trunk lid of an automobile according to an embodiment of the present invention. This lid hinge structure is provided on the left side of the vehicle body, and is different from the lid hinge structure provided on the right side of the vehicle body. It is symmetrical.

In FIGS. 1 to 3, 1 is a U-shaped hinge arm, and the rear upper end of the hinge arm 1 is fixed to the lower surface of the proximal end (front end) of the trunk lid 2, while the front upper end is , a mounting bracket 3 is fixed to the upper end thereof, and is pivotally connected to the center portion of the hinge base 5 via the mounting bracket 3 and the support shaft 4. Although not shown, the hinge base 5 is integrated with the vehicle body, with the front side being fixed to the lower surface of the rear shelf that partitions the passenger compartment and the trunk room, and the rear side being fixed to the lower surface of the rear deck panel.

Further, 6 is located in front of the rotation area in the rotational direction of the hinge arm 1, and one end (upper end) is the hinge base 5.
A first link is pivotally connected via a support shaft 7 to the first link 6, and one end of a second link 8 made of two plate members is attached to the other end (lower end) of the first link 6 via a support shaft 9. The other end of the second link 8 holds the support shaft 10 between both sides of the front intermediate portion of the hinge arm 1 (specifically, the lower end of the mounting bracket 3 integrated with the hinge arm 1). It is pivotally connected through the Reference numeral 11 denotes a third link extending in the longitudinal direction of the vehicle body, and the front end of the third link 11 is pivotally connected to an intermediate portion of the first link 6 via a support shaft 12.

Furthermore, 13 and 14 are a pair of torsion bars for always urging the trunk lid 2 in the opening direction, and the torsion bars 13 and 14 are
is disposed to extend in the vehicle width direction within the trunk space behind the pivot point (support shaft 4) between the hinge arm 1 and the hinge base 5. The left end of the vehicle body of one torsion bar 13 of the pair of torsion bars 13 and 14 is supported by a support portion 5a formed on the hinge base 5, and the first link 6 is connected from the support portion 5a to the left side end portion of the vehicle body. The bent portion 1 is bent at a substantially right angle so as to be parallel to each other.
The tip of 3a is connected to the rear end of the third link 11.

On the other hand, the left end of the vehicle body of the other torsion bar 14 of the pair of torsion bars 13 and 14 is connected to a torsion force adjustment device 15 attached to the rear portion of the hinge base 5. The torsion force adjustment device 15 includes an adjustment bolt 16 and a swinging member 17, and is configured to adjust the torsion force of the torsion bar 14 by rotating the swinging member by tightening the adjustment bolt 16.

Although not shown, the right end portions of the pair of torsion bars 13 and 14 are in a connected state in the lid hinge structure on the right side of the vehicle body, which is the opposite of the connected state in the lid hinge structure on the left side of the vehicle body. That is, the right end of the torsion bar 13 on the vehicle body is connected to the torsional force adjustment device, and the right end of the torsion bar 14 on the vehicle body is supported by the support portion of the hinge base and bent at a substantially right angle from the support portion. The tip of the bent portion is connected to the rear end of the third link. As a result, the pair of torsion bars 13 and 14 each have their torsion force transmitted from the bent portion 13a at one end to the trunk lid 2 side, and the torsion force adjustment device 15 at the other end.
The twisting force is adjustable.

Next, to explain the operation and effect of the above embodiment, the torsional force of the torsion bar 13 is applied sequentially from the tip of the bent portion 13 of the torsion bar 13 via the third link 11, the first link 6, and the second link 8. The transmission is transmitted to the hinge arm 1, and the hinge arm 1 is pushed out so as to rotate counterclockwise in FIG. This acts as a biasing force in the opening direction. still,
The relative positions of the bent portion 13a of the torsion bar 13, the hinge arm 1, and the links 6, 8, 11 when the trunk lid 2 is closed and fully opened are shown in FIGS. 4 and 5, respectively.

In this case, the bent portion 13a of the torsion bar 13 is bent so as to be substantially parallel to the first link 6, and when the trunk lid 2 is opened and closed, see FIGS. 4 and 5 for comparison. As can be seen from the above, since the torsion bar 13 swings in a state substantially parallel to the first link 6, the bent portion 13a of the torsion bar 13 is located at the position of the first link 6, and the tip of the bent portion 13a is located at the position of the first link 6. Hinge arm 1
As in the case of the conventional lid hinge structure connected to the trunk lid 2, a predetermined biasing force is applied to the trunk lid 2 according to its degree of opening, so that the function of the torsion bar type lid hinge structure can be effectively exhibited. Furthermore, the opening degree of the trunk lid 2,
Dead weight of trunk lid 2 and torsion bar 1
The relationship between the moment around the pivot point (support shaft 4) between the hinge arm 1 and the hinge base 5 due to the torsional forces No. 3 and 14 is shown in FIG. In this Figure 6,
The difference between the moment A due to the torsional force of the torsion bar and the moment B due to the trunk lid's own weight becomes the holding force of the trunk lid at each opening degree.

Furthermore, the torsion bar 13 is located rearward from the vehicle body (rear shelf) side by approximately the length of the third link 11 in the longitudinal direction of the vehicle body, that is, closer to the trunk lid 2 than in the case of a conventional lid hinge structure. There is no need to curve the center part of the torsion bar 13 toward the rear of the vehicle body in order to avoid interference with vehicle body accessories such as speakers and rear cooler units mounted on the rear shelf as in the past, and as a result, a large effective space in the trunk room is secured. can do.

Further, the trunk lid 2 is only supported by transmitting its own weight to the vehicle body (hinge base 5) via the hinge arm 1 to the pivot joint (support shaft 4) between the hinge arm 1 and the hinge base 5. In addition, the information is transmitted from the hinge arm 1 via the second link 8 and the first link 6 to the pivot joint (support shaft 7) between the first link 6 and the hinge base 5, so that the Therefore, the support rigidity of the trunk lid 2 can be increased.

In the above embodiment, the present invention was applied to a lid hinge structure for a trunk lid 2, but it can be similarly applied to other torsion bar type lid hinge structures of automobiles, such as a lid hinge structure for a bonnet. This is effective as a countermeasure when the torsion bar in a lid hinge structure is in a position where it interferes with vehicle body accessories.

(Effects of the invention) As described above, according to the lid hinge structure of the invention, the torsional force of the torsion bar is transmitted to the lid side, and the lid is always moved in the opening direction with a predetermined biasing force depending on the degree of opening. While ensuring the energizing function, the torsion bar itself is placed close to the lid so that it does not interfere with the vehicle body equipment, so unlike conventional torsion bars, the center part of the torsion bar is curved to avoid interference with the vehicle body equipment. Effective space such as the trunk lid is not narrowed, and a wide effective space can be secured. Furthermore, since the lid is supported by the vehicle body at the pivot point between the hinge arm and the vehicle body as well as the pivot point between the link and the vehicle body, the support rigidity can be increased.

[Brief explanation of drawings]

Figures 1 to 6 relate to embodiments of the present invention, and Figures 1 to 3 show a lid hinge structure for a trunk lid of an automobile. FIG. 2 is a plan view seen from above, and FIG. 3 is a perspective view seen from inside the vehicle body. 4 and 5 are side views showing the relative positions of the bent portion of the torsion bar, the hinge arm, and the link when the trunk lid is closed and fully opened, respectively, and FIG. 6 shows the degree of opening of the trunk lid and the position of the trunk lid. FIG. 3 is a characteristic diagram showing the relationship between self-weight and moment due to torsional force of a torsion bar. 7 and 8 show a conventional lid hinge structure for a trunk lid, with FIG. 7 being a view corresponding to FIG. 1, and FIG. 8 being a view corresponding to FIG. 3. 1... Hinge arm, 2... Trunk lid,
5... Hinge base, 6... First link, 8...
Second link, 11... Third link, 13, 14...
...Torsion bar, 13a...Bending portion.

Claims (1)

[Scope of utility model registration request] a U-shaped hinge arm with one end fixed to the lower surface of the lid and the other end pivoted to the vehicle body; and a first link with one end pivoted to the vehicle body outside the rotational range of the hinge arm. , a second link having one end pivotally connected to the other end of the first link and the other end pivotally connected to the hinge arm; and a second link extending in the longitudinal direction of the vehicle body and having one end pivotally connected to an intermediate portion of the first link. The present invention is characterized by comprising a third link and a torsion bar whose end portion is bent so as to be substantially parallel to the first link, and the tip of the bent portion is connected to the other end of the third link. Automobile lid hinge structure.