JPH03121925A - Door opening and closing construction for vehicle - Google Patents

Abstract

PURPOSE:To ensure the easy opening and closing of a back door and simplify the loading or unloading of a cargo by fitting the front ends of a pair of door arms in such a way as to be capable of free turning via a door hinge provided within a groove at both sides of the rear part of a body roof, and reducing a distance from a back opening to a door. CONSTITUTION:Channel-shaped grooves 5 and 6 extending forward from a body rear part are respectively provided at both sides of the rear part of a body roof 4, and door hinges 9 and 10 are provided forward in the grooves 5 and 6. Also, a back door 3 is so constituted as to be hinged open down and when opened, door arm parts 7 and 8 are supported with balancers 11 and 12 as stranded on the body roof 4. In this door opening and closing construction, the door arms 7 and 8 strand on the body roof 4, when the back door 3 is opened. A distance L, therefore, is shortened and height H also increases. Also, the door hinges 9 and 10, and balancers 11 and 12 housed within the grooves 5 and 6 are concealed with the door arms 7 and 8, when the back door 3 is closed. As a result, the aforesaid hinges 9 and 10, and balancers 11 and 12 can never be seen from the outside.

Description

DETAILED DESCRIPTION OF THE INVENTION a. Field of Industrial Application The present invention relates to a door opening/closing structure for a vehicle having a back door provided at the rear of the vehicle body.

b. Prior Art Conventionally, a back door 53 has been attached to the rear of a vehicle body such as a hatchback vehicle 51 as shown in FIGS. 6 and 7 via a door hinge 52, so as to be openable and closable. It has an opening/closing structure with an upper hinge and a lower opening.

C0 Problem to be Solved by the Invention However, in the conventional door opening/closing structure described above, the door hinge 52 is mounted at a high position in order to widen the opening 54 when the door is opened, and as shown in FIG. Since the distance from the part 54 to the rear end of the back door 53 is large, it is difficult to open and close the hack door 53 in a narrow space. Also, when the back door 53 is made thicker (when opened, the height [I] from the ground to the rear end of the back door 53 becomes larger, so when the back door 53 is closed,
This was inconvenient to use because it sometimes became difficult to reach the rear end.

Furthermore, the opening/closing mechanism components of the back door 53, ie, the door hinge 52 and the balancer 55, are visible from outside and inside the vehicle, detracting from its appearance. Furthermore, since the balancer 55 protrudes toward the opening 54, the opening area of the cargo compartment is narrowed by the balancer 55.

The present invention has been made in view of the above circumstances, and its purpose is to provide a vehicle door opening/closing structure that can eliminate the above-mentioned drawbacks.

d. Means for Solving the Problems - In order to solve the problems of the prior art, in the present invention, grooves are provided on both left and right sides of the rear part of the vehicle roof, and grooves are provided at the top of the hack door extending along the vehicle roof. A pair of left and right door arm portions are integrally formed, the front end of the door arm portion is rotatably attached to the vehicle body roof by a door hinge provided on the front side within the groove portion, and the back door is supported within the groove portion when opened. A balancer is installed to

e. Examples Hereinafter, the present invention will be explained in detail based on illustrated examples.

1 to 4 show an embodiment of a vehicle door opening/closing structure according to the present invention. In the figure, l is a hatchback type vehicle, and a back door 3 is attached to the rear of the vehicle body of the vehicle 1 to open and close an opening 2 that serves as an entrance and exit for luggage.

Grooves 5 and 6 each having a channel-shaped cross section and extending from the rear of the vehicle body toward the front are provided on both left and right rear sides of the vehicle body roof 4 that constitutes the roof of the vehicle 1, and the depths of the grooves 5 and 6 are as follows. When the hack door 3 is closed, the upper surface of a door arm portion 7.8 (described later) and the upper surface of the vehicle body roof 4 are formed to be substantially flush with each other (see FIG. 4). Door hinges 9.10 are provided on the front side of the groove 5.6, that is, near the center of the vehicle roof 4 in the longitudinal direction, and balancers It, 12 are provided behind these door hinges 9.10. It is set up. The balancers 11 and 12 support the back door 3 when opened, and have one end pivotally attached to the vehicle roof 4 and the other end to support the back door 3.
The door arm 7.8 is pivotally connected to the door arm 7.8. As shown in FIGS. 3 and 4, the door hinge 9.10 and balancer 11.12 are housed in the groove 5.6 so as not to be visible from outside and inside the vehicle.

On the other hand, a pair of left and right door arm portions 7.8 extending along the vehicle body roof 4 are integrally formed on the upper part of the back door 3, and the front ends of the door arm portions 7.8 are attached to bolts 13.
and connected to the door hinge 9.10 at 7 and 14,
It is rotatably attached to the vehicle body roof 4 via the door hinge 9.10.

Therefore, the back door 3 is configured with an upper hinge that opens downward,
When opened, the door arms 7, 8 are supported by balancers 11, 12 in a state in which they ride above the vehicle body roof 4, as shown in FIGS. 2 and 3.

In the door opening/closing structure configured in this way, when the back door 3 is opened, the door arm portion 7.8 rides above the vehicle body roof 4, so the distance shown in FIG. 7 is shorter than in the conventional door opening/closing structure. As it becomes shorter, the height 1 (also becomes lower).
The balancers 11 and 12 are covered by the door arm portion 7° 8 when the back door 3 is closed, so that they cannot be seen from the outside.

Hereinafter, one embodiment of the present invention has been described, but the present invention is not limited to the embodiment described above, and various modifications and changes can be made based on the technical idea of the present invention.

For example, in the previously described embodiment, the door arm parts 7 and 8 of the back door 3 are exposed to the outside, but in order to further improve the appearance, the door arm parts 7 and 8 are shown in FIG.
Attach the rear spoiler 15 to the upper part of the door arm part 7.
．． 8 may be covered.

f. Effects of the Invention As described above, the vehicle door opening/closing structure according to the present invention includes grooves provided on both left and right sides of the rear part of the vehicle body roof, and a pair of left and right door arm portions extending along the vehicle body roof integrated into the upper part of the back door. The front end of the door arm is rotatably attached to the door hinge provided on the front side in the groove, so when the back door is opened, the door arm rides up above the vehicle roof, opening the rear of the vehicle. The distance from the back door to the rear end of the back door can be reduced, there is no problem in opening and closing the back door in a narrow space, and luggage can be taken in and out easily. Moreover, when the back door is opened, the height from the ground to the rear end of the back door is reduced, so the barrack door can be easily closed, making it convenient to use.

Further, in the opening/closing structure of the present invention, the door hinge and balancer are provided in the groove of the vehicle roof, and are covered by the door arm when the back door is closed.
The door hinges and balancer are invisible not only from outside the vehicle but also from inside the vehicle, improving the exterior appearance. In addition, since the balancer does not protrude toward the opening that is opened and closed by the hack door, the opening area of the luggage compartment becomes wider, allowing for quick loading and unloading of luggage.

[Brief explanation of drawings]

1 to 4 show one embodiment of the present invention, in which FIG. 1 is an overall perspective view of a vehicle to which the door opening/closing structure of this embodiment is applied, and FIG. 2 is a backrest in an open state. Perspective view of the door,
3 is a sectional view taken along the line AA in FIG. 1, FIG. 4 is a sectional view taken along the line BB in FIG. 1, and FIG. A perspective view of the installed back door, and FIGS. 6 and 7 show the conventional door opening/closing structure. FIG. 6 is a perspective view of the vehicle with the back door in an open state, and FIG. 7 is a perspective view of the back door. FIG. 2 is a side view of the vehicle in an open state. DESCRIPTION OF SYMBOLS 1... Vehicle, 3... Back door, 5.6... Groove part, 9 10... Door hinge, 2... Opening part, 4... Vehicle roof, 7.8... Door arm part , IL 12...Balancer. Patent applicant Suzuki Automobile Industry Co., Ltd.

Claims (1)

[Claims] Grooves are provided on both left and right sides of the rear part of the vehicle body roof, and a pair of left and right door arm parts extending along the vehicle body roof are integrally formed at the top of the back door, and the door arm parts are connected by a door hinge provided on the front side within the groove part. A door opening/closing structure for a vehicle, characterized in that a front end is rotatably attached to the vehicle roof, and a balancer is provided in the groove to support the back door when opened.