JPH03273977A - Hood hinge device of automobile - Google Patents

Abstract

PURPOSE:To prevent the interference of the rear end of a hood with a vehicle body by providing such a constitution as moving the rear end part of the food upward subsidiarily to the opening operation of the hood through a plurality of links when the hood covering an engine room is opened. CONSTITUTION:When a hood 2 is opened, its rear end part is brought up while rotating the hood 2 around a pin 22, a first link 12 pivotally supported thereby is moved upward, and a second link 13 connected to the link 12 is also rotated upward with the pin 20 as a support point. Consequently, a push-up pin 21 protruded on the second link 13 is slid and guided by a guide channel 24 cut in a guide member 24 in the lower divided link 27 of a third link 14 while circularly moving clockwise upward with the pin 20 as a support point, and the third link 14 is extended. Thus, the upper end support points of the first link 12 and the third link 14 are moved upward while moving counterclockwise, and consequently the rear end part of the hood 2 is moved upward subsidiarily to the opening operation of the hood 2.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a hood hinge device for an automobile.

[Prior art]

Conventionally, as a hood hinge device used for boat fishing, there is a so-called one-point hood hinge device as shown in FIGS. 13 and 14.

This one-point hood hinge device 1 supports the ends of an arm 3 fixedly attached to the base end of a hood 2 and an arm 5 fixedly attached to the vehicle body side (specifically, the cowl top panel) 4 with a single pivot. They are rotatably connected by a pin 6.

In the figure, 7 is the window shield glass, 8 is the front fender, 19 is the front pillar, and 10 is the wiper cover, which is located at the solid line position when the wiper (not shown) is not in use, but moves to the chain line position when the wiper is in use. ing.

PR indicates the front of the vehicle, and OX indicates the vehicle width direction.

Note that this similar technology is described in the ``New Automotive Engineering Handbook'' published by the Society of Automotive Engineers of Japan (Part 6 &!). >Disclosed in vehicle bodies 1-12 to 1-13.

[Problem to be solved by the invention]

However, in such a hood hinge device, when both sides of the rear end of the hood 2 are curved as shown in the figure or when the wiper cover 10 is installed, the built-in hinge device l In order to prevent the hood 2 from being seen or to prevent the hood 2 from interfering with the wiper cover 10 when it is closed, the hood 2 is laid out relatively forward and away from the rear end of the wiper cover 10. In this case, when the hood 2 is opened, There is a problem that the rear end may move as shown by the trajectory of arrow A and interfere with the vehicle body side (cowl top panel) 4.

The present invention has been made with attention to such conventional problems, and provides a hinge device that prevents the rear end of the hood from interfering with the vehicle body when the hood is opened, and that can be installed in a small space. The purpose is to provide.

[Means to solve the problem]

In order to achieve this object, the present invention includes a first link having one end rotatably supported at the rear end of the hood, and one end rotatably connected to the other end of the first link and the other end being rotatably connected to the other end of the first link. a second link rotatably supported on the vehicle body; one end of the second link is rotatably supported at a rear portion at a predetermined distance from a pivot point of the first link at the rear end of the hood; an upper split link that moves in accordance with the rotation of the link, one end of which is slidably overlapped with the other end of the upper split link, and the other end of which is spaced a predetermined distance from a pivot point of the other end of the second link of the vehicle body; The hood hinge device for an automobile includes a third link that is longitudinally extendable and retractable in synchronization with the opening and closing of the hood, which is made up of a lower split link that is pivotally supported at the front portion.

[For production]

When the hood is opened, the rear end of the hood rotates about the upper end of the third link as a fulcrum, and the first link pivoted to this moves upward, and the second link connected to the first link moves upward. The link also rotates around the pivot point relative to the vehicle body.

As a result, the upper divided link of the third link moves upward with respect to the lower divided link, and the third link expands. At the same time, the third link rotates, and its upper end and the pivot point at the upper end of the first link move upward while moving toward the front of the hood, and eventually follow the opening movement of the hood, causing the rear end of the hood to rise. It will be moved.

〔Example〕

Hereinafter, an embodiment of the present invention will be described with reference to the drawings, in which parts that are the same as those of the prior art are denoted by the same reference numerals.

In FIGS. 1 to 4, reference numeral 11 denotes a hood hinge device of the present invention, which is composed of main parts of a first link 12, a second link 13, and a third link 14.

The first link 12 has a substantially doglegged shape, and one end is pivotally supported via a pivot pin 16 to the rear end of a mounting bracket 15 fixed to the rear end side of the back surface of the hood 2.

One end of the second link 13 is rotatably connected to the other end of the first link 12 via a pivot pin 17, and the other end is fixed to a hood ridge 18, which is a part of the vehicle body, and has a mounting portion 19'. is rotatably supported via a pivot pin 20 at the rear end of the mounting base plate 19, which has a downwardly sloped surface, and the base end of a push-up pin 21 is rotatably supported at the midway side of the mounting base plate 19. It is protruded so that it can move freely.

The third link 14 pivots at a rear portion a predetermined distance L+ from the pivot point (pivot pin 16 position) of the first link 12 at the rear end of the mounting bracket 15 whose one end is fixed to the hood 2. An upper split link 23 is rotatably supported via a support pin 22 and has the tip of the push-up pin 21 connected to the side surface of the other end, and one end is slidably connected to the other end of the upper split link 23. The guide member 25 has a U-shaped cross section and is integrally formed with a guide groove 24 extending in the longitudinal direction that overlaps and holds the push-up pin 21 and slidably guides the push-up pin 21, and the other end is connected to the vehicle body. A predetermined interval Lz (
>L, ), the lower split link 27 is rotatably supported via a pivot pin 26 on the front part of the hood 2, and the second link 13 rotates in synchronization with the opening and closing of the hood 2. ,
Correspondingly, when the upper split link 23 moves, it can be expanded and contracted in the longitudinal direction.

Each of the pivot pins 16 , 17 , 20 , 22 , 26
The push-up pin 21 has a locking flange at one end, and the other end is caulked and locked.

Ring-shaped spacers 28 and 29 are inserted between the guide member 25 of the push-up pin 21, the second link 13, and the upper split link 23, respectively. Of course, spacers are also inserted between the overlapping members of the other pivot pins 16, 17, 20, 22, and 26, although they are not shown in the drawings. Further, it goes without saying that each member is appropriately bent in order to avoid interference with each other during operation.

Note that 15a and 15b are mounting holes of the mounting bracket 15, 19a and 19b are mounting holes of the mounting base plate 19, 30 is a strut housing, and 31 is a cowl top panel.

Of course, a pair of the hood hinge devices 11 are installed on both sides of the rear end of the hood 2.

Next, the effect will be explained.

The state in which the hood 2 is closed is as shown in FIG.

In this state, the first link 12, the second link 13, and the third link 14 maintain a substantially horizontal state, and the push-up pin 21 protruding from the second link 13 is located at the lowest end position of the guide groove 24.
The third link 14 is in the most contracted state.

On the other hand, when the hood 2 is opened in this state, the hood 2 rotates about the pivot pin 22 located at the upper end of the third link 14 and its rear end lifts up, causing the first link 12 pivoted thereto to lift up. moves upward, and the second link connected to this first link 12
The link 13 also rotates upward (clockwise in the figure) about the pivot pin 20 as a fulcrum.

As a result, the push-up pin 21 protruding from the second link 13 also moves in an arc clockwise using the pivot pin 20 as a fulcrum, and at the same time, the push-up pin 21 protruding from the second link 13 moves in an arc clockwise, and at the same time, the push-up pin 21 is cut into the guide member 25 of the lower split link 27 of the third link 14. The upper split link 23 connected to the upper split link 23 moves upwardly with respect to the lower split link 27 while being guided by the guide member 25. That is, the third link 14 is expanded. At this time, the third link 14 is restricted by the push-up pin 21 and the guide groove 24 and rotates counterclockwise about the pivot pin 26 as a fulcrum. Therefore, the upper end pivot points of the first link 12 and the third link 14 (the pivot pin 16 and the pivot pin 2
2 position) moves upward while moving counterclockwise to match the front of the hood 2, and the rear end of the hood 2 eventually moves upward following the opening operation of the hood 2. When the push-up pin 21 reaches the uppermost position of the guide groove 24, the hood 2
is fully open. FIG. 6 shows the hood 2 in a fully open state. In this case, the amount of rise when the hood 2 is opened is equal to the amount of rise X1 caused by the counterclockwise rotation of the third link 14 and the Y of the elongated bone (length a) in the third link 14.
This is the sum of the upper portions X2 corresponding to the components.

, 2, the present hood hinge device 11 connects the hood 2
While performing the hinge function, the rear end moves upward when the hood 2 is opened, so if both sides of the rear end of the hood 2 are curved or a wiper cover is installed, the installation position will be lower than the hood. Even if it is far away from the rear end of 2, the cowl top panel 31
There is no risk of interference.

In addition, each link 12, 13, 14 is approximately the first link 1
Since the rear end of the hood 2 performs the desired upward movement function while rotating within the length of the hood 2 and the third link extends, the hood 2 can be made compact and can be installed in a small space. It is possible.

The operation for changing the hood 2 from the open state to the closed state is the reverse order of the above operations.

7 to 9 show other embodiments of the invention.

In this embodiment, the configurations of the first link 12 and the second link 13 are the same as in the first embodiment, and only the configuration of the third link 14 is different. Parts equivalent to those in the first embodiment will be described with the same reference numerals.

The third link 14 is composed of an upper divided link 23 and a lower divided link 27 as in the first embodiment, and the end of the lower divided link 27 is overlapped and held by the end of the upper divided link 23, and is slidably guided. A separate guide member 25 is fixedly provided to
A guide groove 24 is carved in the lower split link 27 , and a shaft 3 that protrudes laterally at the overlapping portion of the upper split link 23 and the guide member 24 and is guided by the guide groove 24 .
2 is provided, and a rotating roller 33 is provided at a portion of this shaft 32 that protrudes laterally from the guide groove 24 of the lower split link 27.

On the other hand, a direct-acting cam plate 34 having a cam surface 34a for guiding the rotary roller 33 is fixed to the side surface of the second link 13. This direct-acting cam plate 34 is connected to the second link 1
3 rotates clockwise in the figure in response to the opening operation of the hood 2, it pushes up the rotating roller 33 and moves the upper split link 23 upward relative to the lower split link 27.

The closed state of the hood 2 in this embodiment is as shown in FIG. 10, but when the hood 2 is opened in this state, the first link 12 and the second link 13 move in the same manner as in the first embodiment. However, at the same time as the second link 13 rotates clockwise, the third link 14 rotates the direct-acting cam plate 3 fixed thereto.
4 pushes up the rotating roller 33 along the guide groove 24,
As a result, the upper divided link 23, which is integral with the upper divided link 23, is moved upward with respect to the lower divided link 27, and the third link 14 is eventually extended.

FIG. 11 shows the hood 2 in a fully open state, and at this time the rotating roller 33 has moved to the uppermost position of the direct-acting cam plate 34.

Therefore, as in the first embodiment, the rear end portion moves upward when the hood 2 is opened while still functioning as a hinge for the hood 2, producing the same effect.

FIG. 12 shows yet another embodiment of the invention.

In this embodiment, in each of the above embodiments, the mounting base plate 1
The front and rear ends of 9 are extended, and a flange portion 19c is attached to the extended ends.
, 19d are bent and formed, and the flange portions 19c, 19d are formed by bending.
are fixed to the strut housing 30 and the cowl top front panel 35 with bolts 36° 36, respectively, which has the effect of reinforcing the strut housing 30 against input.

〔effect〕

As explained above, according to the hood hinge device of the present invention, the first link has one end rotatably supported at the rear end of the hood, and the other end of the first link is rotatably supported. a second link connected to the hood and having the other end rotatably supported on the vehicle body; and one end rotatably pivoted at a rear portion at a predetermined distance from a pivot point of the first link at the rear end of the hood. an upper split link that is supported and moves in accordance with the rotation of the second link; one end of the upper split link is slidably overlapped with the other end of the upper split link; the other end is a pivot point for the other end of the second link of the vehicle body; The third link consists of a lower split link pivotally supported on the front part at a predetermined interval, and a third link that can expand and contract in the longitudinal direction in synchronization with the opening and closing of the hood. The advantage is that the end portion does not interfere with the vehicle body and can be set within a small space.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing a hood hinge device according to an embodiment of the present invention, Fig. 2 is a perspective view showing the front part of an automobile showing the installation state thereof, and Fig. 3 is a cross section taken along line ii in Fig. 1. Figure, 4th
The figure is a front view of the third link, which is a component of the present invention, and the fifth link.
6 and 6 are schematic front views showing the hood closed and opened states respectively, FIG. 7 is a perspective view corresponding to FIG. 1 showing another embodiment of the present invention, and FIG. 8 is a - ■ Line sectional view, Figure 9 is a front view of the third link in another embodiment of the present invention, and Figure 10 is a front view of the third link in another embodiment of the present invention.
11 and 11 are schematic front views showing the hood closed and opened states respectively, FIG. 12 is a partially omitted plan view showing still another embodiment of the present invention, and FIG. 13 is a front view of the front of a car showing a conventional example. FIG. 14 is a longitudinal sectional side view of the main part. 2...Hood, 11...Hood hinge device, 12...First link, 13...
2nd link, 14...Third link, 16, 1
7, 20, 22, 26... Pivot bottle, 1
8...Hood ridge (car body), 21...
・Push-up bottle, 23...Top split link, 24・
...Guide groove, 25 ...Guide member, 2
7... Lower split link, 33... Rotating roller, 34... Direct drive cam plate. Answer 3 G back? 7゜Answer 5th No. 9 Note 72″ Sujino a Note 80 Note 10 Circle Note Ru U Koku Zero Snorri

Claims (1)

[Claims] A first link having one end rotatably supported on the rear end of the hood, one end rotatably connected to the other end of the first link, and the other end rotatably pivotally supported on the vehicle body. A second link and
an upper split link, one end of which is rotatably supported at a rear portion at a predetermined distance from a pivot point of the first link at the rear end of the hood, and which moves in response to rotation of the second link; and a lower divided link which is slidably overlapped with the other end of the upper divided link and whose other end is pivotally supported at a forward portion of the vehicle body at a predetermined distance from the other end pivot point of the second link. A hood hinge device for an automobile, comprising a third link that is longitudinally extendable and retractable in synchronization with opening and closing of the hood.