JPH03119279A - Structure for opening-closing body of car - Google Patents

Abstract

PURPOSE:To improve operability of an openable body at its opening and shutting by providing a hinge mechanism having two links that connect the openable body to a car body and a stay damper that gives impetus to the openable body in the direction of opening. CONSTITUTION:A hinge mechanism 7 having two links 11 and 12 that connect openable bodies 6 and 6 to a car body 1, and a stay damper 13 that gives impetus to the openable bodies 6 and 6 in the direction of opening are provided. One end of the stay damper 13 is hinged to the openable bodies 6 and 6 and the other end thereof is connected to a transmitting member 15 that acts on the stay damper 13 so that the expanding force thereof actuates against one (11) of the links 11 and 12, with the openable bodies 6 and 6 put in the state of shutting, to make the link 11 turn in a direction corresponding to the direction of the openable bodies 6 and 6. Thereby applying of operating physical force in the opening direction at the beginning of the opening is not required, and unnecessary increase of resistance will not occur at the shutting.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a vehicle opening/closing body structure, for example, a vehicle opening/closing body structure that supports an opening/closing body such as a bonnet, trunk lid, or back door of an automobile so as to be openable and closable. .

(Prior Art) Generally, automobiles have a bonnet that covers the upper part of the engine compartment, a trunk lid that covers the upper part of the trunk compartment,
Alternatively, a back door or the like disposed on the rear rear surface of the vehicle body is supported by the vehicle body via an opening/closing mechanism so as to be able to be closed by RFS.

For example, according to the opening/closing body mounting structure described in Japanese Utility Model Application Publication No. 61-187881, one end is pivotally attached to a hinge bracket fixed to the vehicle body, and the other end is pivotally attached to the opening/closing body such as a trunk lid. A pair of attached hinges (link)
By supporting the opening/closing body so as to be openable and closable, one end of the stay damper is pivotally connected to the vehicle body side via the extension part formed on the hinge bracket, and the other end of the stay damper is pivotally connected to the opening/closing body. When opening the opening/closing body, the expansion force of the stay damper is applied to both the vehicle body side and the opening/closing body side to assist the opening operation of the opening/closing body, and the expansion force holds the opening/closing body in an open state. It has become.

(Problems to be Solved by the Invention) By the way, as in the above-mentioned prior art, the opening/closing body is opened by the expansion force of the stay damper, which is pivotally connected at one end to the vehicle body side and at the other end to the opening/closing body. In general, when the opening/closing body is closed, the stay damper is stored with its longitudinal direction facing substantially in the longitudinal direction of the vehicle body, so that the rotation of the opening/closing body is located near the extension line of the damper in the axial direction. The pivot point was to be located. That is, the rotational fulcrum of the opening/closing body is located near the extension line of the line of action of the expansion force of the stay damper, and the expansion force of the stay damper is used to rotate the opening/closing body in the opening direction about the rotational fulcrum. At the beginning of the opening movement of the opening/closing body, the moment in the closing direction of the rotation fulcrum due to the opening/closing body's own weight becomes the moment that rotates the opening/closing body in the opening direction. It was much larger in comparison. For this reason, when opening the opening/closing body, the user has to lift the opening/closing body in the opening direction against the moment in the closing direction, especially at the beginning of opening, which makes the operation feel heavy at the beginning of opening, making it difficult to operate. was supposed to lower the To deal with this, for example, it may be possible to increase the expansion force of the stay damper, but in this case, this would unnecessarily increase the resistance when closing the opening/closing body, resulting in a large operation. It required force and was inconvenient.

Therefore, the present invention provides a hinge mechanism that supports the opening/closing body so that it can be opened and closed by two links connecting the vehicle body and the opening/closing body;
In an opening/closing body structure having a stay damper that biases the opening/closing body in the opening direction, by appropriately arranging the stay damper, the operability when opening the opening/closing body, especially the operability at the initial stage of opening, can be further improved. The purpose is to improve.

(Means for Solving the Problems) In order to solve the above problems, the present invention is characterized by the following configuration.

That is, an opening/closing body structure for a vehicle is provided with a hinge mechanism that has two links connecting the vehicle body and the opening/closing body and supports the opening/closing body so as to be openable and closable, and a stay damper that biases the opening/closing body in the opening direction. , one end of the stay damper is pivotally connected to the opening/closing body, and the other end is rotated in a direction corresponding to the opening direction of the opening/closing body to apply the expansion force of the stay damper to one link when the opening/closing body is closed. It is characterized in that it is connected to a transmission member that acts to act.

(Function) According to the above configuration, the other end of the stay damper applies the expansion force of the stay damper to one link when the opening/closing body is closed, so that the link rotates in a direction corresponding to the opening direction of the opening/closing body. By being connected to a transmission member that acts on the stay damper, the expansion force of the stay damper is applied via the transmission member to one link when the opening/closing body is closed in a direction corresponding to the opening direction of the opening/closing body. Immediately after the opening and closing body begins to open, the expansion force of the stay damper acts on both the opening and closing body and one link that supports the opening and closing body so that it can be opened and closed. As a result, all of the expansion force of the stay damper efficiently acts in the direction of opening the opening/closing body. Therefore, the assist force in the opening direction at the beginning of the opening movement of the opening/closing body, where the moment in the closing direction due to the own weight of the opening/closing body is large, is increased. The opening/closing body can be opened easily, and its operability can be further improved. Also,
Since the assisting force in the opening direction at the initial stage of opening of the opening/closing body is increased without increasing the expansion force of the stay damper itself, the resistance when closing the opening/closing body is not increased needlessly, and the operation when closing the opening/closing body is performed. It doesn't harm your sexuality.

(Example) Embodiments of the present invention will be described below based on the drawings.

As shown in FIG. 1, a rear combination lamp 2 is disposed at the rear end edge of the rear part of the vehicle 1, and a rear fender outer panel 3 forming the rear outer panel of the vehicle body is provided. A trunk room 5 is formed by an inner panel 4 whose upper end is joined to form the side surface of the vehicle body, and a floor panel (not shown) which is joined to the lower end of the inner panel 4 and forms the floor surface of the rear part of the vehicle body. has been done. A trunk lid 6 as an opening/closing body for opening and closing the trunk compartment 5 is disposed above the trunk compartment 5, and the trunk lid 6 connects the front end side of the trunk lid 6 with the vehicle body. It is supported so as to be openable and closable by a hinge mechanism 7 disposed between them. The hinge mechanisms 7 are disposed as a pair of left and right hinge mechanisms between both sides of the front end of the trunk lid 6 and the vehicle body.

In this embodiment, as shown in FIGS. 1 to 3, the hinge mechanism 7 is constructed as follows.

That is, a recess 3 extending in the longitudinal direction of the vehicle body is formed by bending the upper edge of the rear fender outer panel 3 inward of the vehicle body.
A vehicle body side hinge bracket 9 is fixed via a fixing member 8.8 to the upper surface of the joint between the inner panel 4 and the flange portion 4a formed by bending the upper edge of the inner panel 4 inward to the vehicle body. , on the side of the front end of the trunk lid 6,
The lid-side hinge bracket 10 is fixed by welding or via a suitable fixing member (not shown). A first link 11 and a second link 1 are provided between the vehicle body side hinge bracket 9 and the lid side hinge bracket 10.
2, one end of the first link 11 is pivotally connected to the vehicle body side hinge bracket 9 by a support shaft 11a, and the other end of the first link 11 is pivotally connected to the lid side bracket 10 by a support shaft 11b. and the second link 12
One end of the second link 12 is pivotally connected to the vehicle body side hinge bracket 9 through a support shaft 12a, and the other end of the second link 12 is pivotally connected to the lid side bracket 10 through a support shaft 12b. Thereby, the trunk lid 6 is supported by the vehicle body via the first and second links 11, 12 so as to be openable and closable.

Further, a stay damper 13 having a conventionally well-known configuration is disposed between the hinge mechanism 7 and the rear end of the trunk lid 6, and the rear end of the main body 13a of the stay damper 13 forms a spherical joint 14. The stay damper 1 is pivotally connected to the rear end side surface of the trunk lid 6 via the
The tip of the rod member 13b of No. 3 is connected to the first link 11.
The transmission portion 15 is integrally formed with the first link 11 and extends diagonally downward from the support shaft 11a of the first link 11, and is pivotally connected via a support shaft 16. As a result, the expansion force of the stay damper 13 moves the first link 11 around the support shaft 11a, and
As shown by the chain line in the figure, it acts to rotate the trunk lid 6 upward, and also acts on both sides to rotate the trunk lid 6 in the opening direction, as shown by the chain line in Figure 2. It is configured.

Next, to explain the operation of this embodiment, first, Fig. 4 (I
), when the trunk lid 6 is closed, the expansion force of the stay damper 13 is
The moment is transmitted to the transmission portion 15 to which the rod members 13b of No. 3 are connected, and thereby a moment that opens the first link 11 upward about the support shaft 11a acts on the first link 11. That is, as shown by the solid line in FIG. 5, conventionally, when the opening degree of the trunk lid 6 is 0,
A moment in the closing direction is generated due to the trunk lid 6's own weight, and a load in the closing direction acts on the trunk lid 6. According to this embodiment, the first link 11 is connected to the trunk lid 6. As a result of the generation of a moment to rotate the trunk lid 6 in the direction corresponding to the opening direction, a load in the opening direction acts on the trunk lid 6, and as a result, as shown by the dotted line in FIG. 5, the load in the closing direction and the load in the opening direction are The load is balanced. Therefore, by only slightly pushing up the trunk lid 6, the first link 11 rotates upward about the support shaft 11a, as shown in FIG. 4(U), and along with this, the second link 12 Also support shaft 12a
The trunk lid 6 is opened by pivoting upward about the trunk lid 6. As shown in FIG. 5, when the opening degree of the trunk lid 6 is around 30 degrees, the moment acting in the opening direction of the trunk lid 6 and the expansion force of the stay damper 13 decrease, and the trunk lid
The load urging the trunk lid 6 in the opening direction will gradually decrease, but in this case, the moment in the closing direction due to the trunk lid 6's own weight will also decrease.
The trunk lid 6 will be further opened. As shown in FIG. 5, when the opening degree of the trunk lid 6 reaches a predetermined opening degree, for example, around 60 degrees, the moment in the closing direction due to the trunk lid 6's own weight becomes extremely small. As a result, the load acting in the opening direction of the trunk lid 6 due to the expansion force of the stay damper 13 increases rapidly, and as shown in FIG. 4 (Iff), the first link 11 further rotates. While the trunk lid 6 is fully opened, the support shaft 1 of the first link 11 is
1a and each support shaft 12a, 12b of the second link 12 are in a straight line state, and the trunk lid 6 is held in a fully open state.

As described above, according to this embodiment, when opening the trunk lid 6, the stay damper 13 is
The assisting force in the opening direction due to the expansion force becomes large, and as a result, the trunk lid 6 can be opened extremely easily without applying any operating force in the opening direction, and its operability can be improved.

Furthermore, according to this embodiment, the assist force at the initial stage of opening is improved without increasing the expansion force of the stay damper 13 itself, so that the resistance when closing the trunk lid 6 is not increased unnecessarily. Therefore, the operability when closing the trunk lid 6 is not impaired.

In this embodiment, the operating force in the opening direction at the beginning of the opening movement of the trunk lid 6 is set to 0, that is,
Although the moment acting in the opening direction immediately after opening is balanced with the moment acting in the closing direction due to the trunk lid 6's own weight, for example, the support shaft 11a of the vehicle body side hinge bracket 9 of the first link 11
The size of the trunk lid can be changed by changing the moment acting in the opening direction by appropriately setting the distance between It is possible to variably adjust the assisting force in the opening direction at the initial stage of opening in response to changes in the trunk lid 6 and its weight, and it is also possible to adjust the opening speed of the trunk lid 6 at the initial stage of opening.

Further, FIG. 6.7 shows a hinge mechanism 27 of a second embodiment, and the hinge mechanism 27 of this second embodiment is similar to the first embodiment described above. A fixing member 28.28 is attached to the upper surface of the joint between a recess 23a extending in the longitudinal direction of the vehicle and a flange 24a formed by bending the upper edge of the inner panel 24 inward. A vehicle body side hinge bracket 29 is fixedly attached to the trunk lid 26, and a lid side hinge bracket 30 is fixedly attached to the front end side portion of the trunk lid 26 via welding or an appropriate fixing member (not shown). There is. A first link 31 is provided between the vehicle body side hinge bracket 29 and the lid side hinge bracket 30.
and a second link 32 are arranged respectively, one end of the first link 31 is connected to the vehicle body side hinge bracket 29 by a support shaft 31a, and the other end of the first link 31 is connected to the lid side bracket 30 by a support shaft 31b. Along with being pivoted,
One end of the second link 32 is pivotally connected to the vehicle body side hinge bracket 29 through a support shaft 32a, and the other end of the second link 32 is pivotally connected to the lid side bracket 30 through a support shaft 32b. Thereby, the trunk lid 26 is supported by the vehicle body via the first and second links 31 and 32 so as to be openable and closable.

Further, a stay damper 33 is disposed between the hinge mechanism 27 and the rear end of the trunk lid 26, and the rear end of the main body 33a of the stay damper 33 is connected to the trunk lid 26 through a spherical joint 34. It is pivotally attached to the rear end side part. Further, the tip of the rod member 33b of the stay damper 33 is placed in a predetermined position of the support link 35, which is rotatably supported via the support shaft 31a of the vehicle body side hinge bracket 29 of the first link member 31.
6. As a result, the expansion force of the stay damper 33 acts to rotate the first link 31 upwardly about the support shaft 31a through the support link 35, as shown by the chain line in FIG. , the trunk lid 26 is configured to act on both sides to rotate the trunk lid 26 in the opening direction, as shown by the chain line in FIG.

Next, to explain the operation of this embodiment, first, Fig. 8(I)
As shown in FIG. 2, when the trunk lid 26 is closed, the expansion force of the stay damper 33 is
Support link 35 to which rod member 33b of No. 3 is connected
By rotating the support link 35 around the support shaft 31a, the first link 31 is pushed up by the pressing portion 35a of the support link 35, and the first link 31 is
A force is applied to rotate the link 11 upward about the support shaft 11a. That is, as shown by the solid line in FIG. 9, conventionally, when the opening degree of the trunk lid 26 is O, a moment in the closing direction is generated due to the trunk lid 26's own weight, causing the trunk lid 26 to close. However, according to this embodiment, a force for rotating the link 31 in the direction to open the trunk lid 26 is transmitted to the first link 31 via the support link 35. As a result, a load in the opening direction acts on the trunk lid 26, and as a result, as shown by the dotted line in FIG. 9, the load in the closing direction and the load in the opening direction are balanced. Therefore, by only slightly pushing up the trunk lid 26, the first link 31 together with the support link 35 rotates upward about the support shaft 31a, as shown in FIG. 8(n). The second link 32 also rotates upward about the support shaft 32a, and the trunk lid 26 is opened. And the ninth
As shown in the figure, when the opening degree of the trunk lid 26 approaches 30 degrees, the moment acting in the opening direction of the trunk lid 26 and the expansion force of the stay damper 33 decrease, causing the trunk lid 26 to move in the opening direction. In this case, the moment in the closing direction due to the trunk lid 26's own weight also decreases, causing the trunk lid 26 to be opened further. . Then, from the state shown in FIG. 8(n),
Further, the trunk lid 26 opens and the stay damper 3
When the axial direction of the rod member 33b of No. 3, that is, the line of action of the expansion force of the stay damper 33 passes through the straight line connecting the support shaft 31a and the support shaft 36, the support link 35
It begins to rotate downward around the support shaft 31a,
The force that rotates the first link 31 in the direction corresponding to the opening direction of the trunk lid 26 no longer acts. After that, as shown in FIG. 9, when the opening degree of the trunk lid 26 reaches a predetermined opening degree, for example, around 60 degrees, the moment in the closing direction due to the trunk lid 26's own weight becomes extremely small. As a result, the load acting in the opening direction of the trunk lid 26 due to the expansion force of the stay damper 33 increases rapidly, and as shown in FIG. 8 (■), the first link 11 further rotates. The support link 35 comes into contact with a stopper 37 fixed at a predetermined position on the vehicle body side hinge bracket 29, and the trunk lid 26 is fully opened, and the support shaft 31a of the first link 31 and the second Each support shaft 32a of the link 32,
32b are in a straight line, and the trunk lid 26 is held in a fully open state.

In this way, also in the second embodiment, the trunk lid 2
When opening the trunk lid 6, the assisting force in the opening direction due to the expansion force of the stay damper 33 is particularly large at the beginning of the opening movement, and as a result, the trunk lid 26 can be opened extremely easily without applying any force in the opening direction. Therefore, the operability can be improved.

Furthermore, the assist force at the initial stage of opening is improved without increasing the expansion force of the stay damper 33 itself.
The resistance when closing the trunk lid 26 is not increased unnecessarily, and the operability when closing the trunk lid 26 is not impaired.

Furthermore, in this embodiment, as in the first embodiment, for example, the support shaft 3Za of the vehicle body side hinge bracket 9 of the first link 31 and the rod member 33b of the stay damper 13
By appropriately setting the distance between the support link 35 and the support shaft 36 to which the tip of the trunk lid 26 is connected, the assist force in the opening direction at the initial stage of opening can be adjusted to correspond to changes in the size and weight of the trunk lid 26. It is also possible to variably adjust the opening speed of the trunk lid 26 at the initial stage of opening.

The opening/closing body to be opened and closed according to the first and second embodiments is not limited to the trunk lid 6°26 as described above, but may be, for example, a bonnet covering the upper part of the engine compartment, or a bonnet of a wagon or pan-type vehicle. It may also be a back door in a car.

(Effects of the Invention) As described above, according to the present invention, the expansion force of the stay damper is applied to one link when the opening/closing body is closed via the transmission member to which the other end of the stay damper is connected. Immediately after the opening/closing body starts to open,
The expansion force of the stay damper acts on the opening/closing body and one link that supports the opening/closing body so as to be openable and closable, so that the entire expansion force of the stay damper acts efficiently in the direction of opening the opening/closing body. As a result, the assist force in the opening direction at the beginning of the opening movement of the opening/closing body, where the moment in the closing direction due to the opening/closing body's own weight is large, is increased. It becomes possible to open the opening/closing body extremely easily without adding any additional pressure, and the operability can be further improved. Furthermore, since the assisting force in the opening direction at the initial stage of opening of the opening/closing body is increased without increasing the expansion force of the stay damper itself, the resistance when closing the opening/closing body is not increased unnecessarily and the opening/closing body is closed. It does not impair operability.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a partially cutaway side view of the rear part of the vehicle body to which the vehicle opening/closing body structure according to this example is applied, and FIG. FIG. 3 is an enlarged sectional view taken along the line ■-■ in FIG. An enlarged view of the area around the hinge mechanism showing the opened state and the operation of each link, FIG. 5 is a graph showing changes in the load acting on the trunk lid when the trunk lid is opened, and FIG. 6 is the opening/closing body structure of the second embodiment. Fig. 7 is an enlarged sectional view taken along the line ■-■ in Fig. 6, and Fig. 8 (
I) to (II) respectively show the operation of the second embodiment, and are enlarged views around the hinge mechanism showing the opened state of the trunk lid and the operation of each link. It is a graph showing changes in applied load. 3.23...Vehicle body (rear fender outer panel), 6
．． 26... Opening/closing body (trunk lid), 7.27...
・Hinge mechanism, 13.33... Stay damper 11
．． 12, 31. 32... Link (11, 31... 1st link, 12.32... 2nd link>, 15.35
...Transmission member (15...Transmission part, 35...Support link).

Claims (1)

[Claims] (1) A vehicle opening/closing body that is equipped with a hinge mechanism that has two links connecting the vehicle body and the opening/closing body and supports the opening/closing body so as to be openable and closable, and a stay damper that biases the opening/closing body in the opening direction. The structure is such that one end of the stay damper is pivotally connected to the opening/closing body, and the other end applies an expanding force of the stay damper to one link when the opening/closing body is closed in a direction corresponding to the opening direction of the opening/closing body. An opening/closing body structure for a vehicle, characterized in that the opening/closing body structure is connected to a transmission member that rotates the body.