JP2020175772A - Opening/closing structure of door - Google Patents

Abstract

To provide an opening/closing structure of a door which can suppress twist of a vehicular door.SOLUTION: In an opening/closing structure 1 of a door, an opening section 102 provided in a vehicle 100 is opened/closed by a vehicular back door 200. A part of the opening section 102 becomes a support section 201 for rotatably supporting the vehicular back door 200. The opening/closing structure of the door includes: a plurality of hinge sections 10 which are arranged closer to at least both ends of the support section 201, cause the support section 201 to support the vehicular back door 200 and are connected to the vehicular back door 200; and a connection shaft 30 which rotates in synchronization with rotation of the vehicular back door 200 by integrally connecting the plurality of hinge sections 10 adjacent to each other and being provided to be a rotation center of the vehicular back door 200.SELECTED DRAWING: Figure 1

Description

The present invention relates to a door opening / closing structure.

Conventionally, a vehicle back door as introduced in Patent Document 1 is known.
The vehicle back door described above is composed of an inner panel and an outer panel. The inner panel and outer panel are made of carbon fiber reinforced resin material. Therefore, the weight of the vehicle back door can be reduced by forming the inner panel and the outer panel with resin.

The vehicle back door is supported by the vehicle via a hinge portion. Therefore, the vehicle back door rotates around the hinge portion.

Japanese Unexamined Patent Publication No. 2016-30586

Generally, a vehicle door including a vehicle back door closes an opening of the vehicle. A part of the opening serves as a support portion that rotatably supports the vehicle door, and the vehicle door is supported by the support portion of the opening using a plurality of hinge portions.

By the way, for example, when a plurality of hinge portions are arranged at least near both ends of the support portion of the opening, a twisting force acts on the vehicle door depending on how the vehicle door is closed. For example, when the operator of the vehicle door puts his hand away from the center of the vehicle door and closes it, the operator feels that the vehicle door is twisted and feels the lack of quality of the vehicle door. There is. That is, the torsional rigidity of the vehicle door becomes an issue. The torsional rigidity is also a problem when the vehicle door is made of a metal such as iron or aluminum. In addition, the problem may occur not only in vehicles but also in flying objects such as drones. That is, the same problem arises if the door for the moving body that closes the opening of the moving body such as a vehicle or a drone is provided.

The present invention has been made by paying attention to the problems existing in such a conventional technique, and an object of the present invention is to provide a door opening / closing structure capable of suppressing twisting of a moving door.

The door opening / closing structure that solves the above problems is a door opening / closing structure in which an opening of the moving body is opened / closed by the moving body door, and a part of the opening can rotate the moving body door. The door opening / closing structure is arranged at least near both ends of the support portion, and the moving body door is supported by the support portion and is connected to the moving body door. By integrally connecting the plurality of hinge portions including the above and the adjacent connecting members among the connecting members of the plurality of hinge portions, and by providing them so as to be the rotation center of the moving body door. A connecting shaft that rotates in synchronization with the rotation of the moving door is provided.

According to this, each of the connecting members of the plurality of hinge portions is integrally connected by the connecting shaft. Therefore, even if a twisting force acts on the moving body door when the moving body door is closed, the operations of the connecting members of the plurality of hinge portions are synchronized with each other. Therefore, even if the door for the moving body is closed so as to be twisted, the operations of the plurality of connecting members are synchronized. Therefore, the moving body door rotates toward the opening while the twist is suppressed. Therefore, the twisting of the door can be suppressed.

In the door opening / closing structure, the hinge fixing bracket for supporting the connecting shaft inside the opening is provided, and the connecting member includes a fixing portion integrally connected to the connecting shaft and the connecting shaft. The arm portion that is curved around the axis so that the radius of curvature does not change, the connecting portion that integrally connects the fixed portion and the arm portion, and the connecting portion that integrally connects the arm portion. It is preferable to have a connecting portion connected to the moving body door.

According to this, it can be said that the hinge portion has an arm portion that is curved so that the radius of curvature centered on the axis of the connecting shaft does not change, for example, an arm type hinge is adopted. Since the arm type hinge has a part that is greatly deformed in order to avoid interference with surrounding parts when opening and closing the door for a moving body, for example, the above-mentioned arm part, the degree of freedom in design according to the place of use is high. On the other hand, the distance from the fixed portion to which the connecting shaft serving as the center of rotation is connected to the connecting portion connected to the door for the moving body becomes long. Therefore, the support rigidity of the connecting member is lowered as compared with the case where the hinge portion is a pin hinge, and a torsional force is likely to act on the door for the moving body. Therefore, it is possible to suppress the torsional force acting on the moving door while maintaining the degree of freedom in designing the hinge portion.

In the door opening / closing structure, the moving body door is a vehicle door, and the vehicle door is made of a resin inner panel arranged inside the vehicle and a resin material arranged outside the vehicle. It is preferable to have an outer panel of.

Since the inner panel and the outer panel are made of resin, the weight of the vehicle door can be reduced.
On the other hand, the torsional rigidity of the vehicle door is disadvantageous, but since each of the connecting members of the plurality of hinges is integrally connected by the connecting shaft, even if the vehicle door is closed so as to be twisted. Twisting of vehicle doors can be suppressed. Therefore, it is possible to reduce the weight of the vehicle door and suppress the twisting of the vehicle door at the same time.

In the door opening / closing structure, the moving body door is a vehicle door, and the vehicle door is a vehicle back that opens and closes in the vertical direction of the vehicle as the moving body when the opening is viewed from the front. It should be a door.

It is often the case that the operator of the vehicle door closes the vehicle door by hand at a position away from the center of the vehicle door when the vehicle door is a vehicle back door. Therefore, twisting of the vehicle back door can be more preferably suppressed.

According to the present invention, twisting of the moving door can be suppressed.

Front view showing the back door and the opening / closing structure of the door. The perspective view which showed the hinge part and the connecting shaft. Sectional view of door opening and closing structure. The perspective view which showed the hinge part in the modified example.

Hereinafter, an embodiment in which the door opening / closing structure is embodied in the vehicle back door opening / closing structure will be described with reference to FIGS. 1 to 3.
As shown in FIG. 1, the vehicle 100 as a moving body has an opening 102 that opens to the outside, a moving body door that closes the opening 102, and a vehicle back door 200 as a vehicle door. There is. The door opening / closing structure 1 is used to open / close the opening 102 of the vehicle 100 by the vehicle back door 200. A part of the opening 102 of the vehicle 100 is a support portion 201 that rotatably supports the vehicle back door 200. The support portion 201 is an upper end portion 101 forming the ceiling portion of the vehicle 100. Further, when the opening 102 of the vehicle 100 is viewed from the front, the vertical direction of the vehicle 100 is defined as the opening / closing direction A of the vehicle back door 200.

The vehicle back door 200 has a resin inner panel 202 arranged inside the vehicle, a resin outer panel 203 arranged outside the vehicle, and a vehicle window panel 204. The vehicle window panel 204 is arranged in the central portion of the vehicle back door 200. The vehicle window panel 204 is fitted into a window frame portion 205 formed on the inner panel 202 and the outer panel 203 so as to penetrate the vehicle back door 200. The vehicle window panel 204 may be made of glass or resin glass.

As shown in FIGS. 1 and 3, the door opening / closing structure 1 includes two hinge portions 10, a hinge fixing bracket 20, a columnar connecting shaft 30, and an interior trim 40.
The two hinge portions 10 are arranged near both ends of the support portion 201, and the vehicle back door 200 is supported by the support portion 201. More specifically, the two hinge portions 10 have a virtual center line C of the vehicle back door 200 extending along the opening / closing direction A of the vehicle back door 200 when the opening 102 of the vehicle 100 is viewed from the front. It is arranged near both ends of the support portion 201 in the direction B (vehicle width direction) orthogonal to the opening / closing direction A while sandwiching the one-dot chain line in FIG. The two hinge portions 10 are connected to the vehicle back door 200. The two hinge portions 10 are connected to the inner panel 202 that constitutes the vehicle back door 200. The two hinge portions 10 are connecting members themselves connected to the vehicle back door 200.

The interior trim 40 is fixed to the upper end 101 of the vehicle 100 inside the opening 102 of the vehicle 100 by a fixing member composed of bolts and nuts (not shown). Here, the upper end portion 101 of the vehicle 100 has a shape curved toward the outside of the vehicle. The interior trim 40 has a curved shape along the upper end 101 of the vehicle 100. When the opening 102 of the vehicle 100 is viewed from the front, in the direction B orthogonal to the opening / closing direction A of the vehicle back door 200, both ends of the interior trim 40 correspond to the positions where the two hinge portions 10 are arranged. doing. Opening holes 21 that open toward the outside of the vehicle are formed at both ends of the interior trim 40. A part of the two hinge portions 10 is always inserted into each of the opening holes 21 of the interior trim 40.

The connecting shaft 30 is located inside the opening 102 of the vehicle 100 and is covered by the interior trim 40. The connecting shaft 30 extends along a direction B orthogonal to the opening / closing direction A of the vehicle back door 200. Both ends of the connecting shaft 30 are integrally connected to the portions of the two hinge portions 10 that are inserted into the opening holes 21 of the interior trim 40. The hinge fixing bracket 20 is provided at a position corresponding to both ends of the connecting shaft 30, and rotatably supports the connecting shaft 30 as described later.

Next, the configuration of the two hinge portions 10 will be described with reference to FIGS. 2 and 3. For convenience of explanation, only the two hinge portions 10 and the connecting shaft 30 are shown in FIG.
As shown in FIGS. 2 and 3, arm type hinges are adopted for the two hinge portions 10. Each of the two hinge portions 10 has a fixing portion 11, an arm portion 12, a connecting portion 13, and a connecting portion 14.

As shown in FIG. 2, the fixing portions 11 of the two hinge portions 10 are integrally connected to both end portions of the connecting shaft 30. The fixing portion 11 has a cylindrical shape. The fixing portion 11 is fixed in a state where the end portion of the connecting shaft 30 is inserted inside. In the present embodiment, the connecting shaft 30 integrally connects a pair of left and right hinge portions 10. That is, it can be said that the connecting shaft 30 integrally connects the adjacent hinge portions 10.

As shown in FIGS. 2 and 3, the arm portion 12 is curved around the axis m of the connecting shaft 30 so that the radius of curvature R does not change. The connecting portion 13 integrally connects the fixing portion 11 and the arm portion 12. The connecting portion 13 is a portion that is always in the inside of the opening hole 21 (see FIG. 3) of the interior trim 40. The connecting portion 14 is integrally connected to the end portion of the arm portion 12 opposite to the portion connected to the connecting portion 13. The connecting portion 14 is a portion connected to the inner panel 202 (see FIG. 3) of the vehicle back door 200. The connecting portion 14 is provided with a through hole 14a. The connecting portion 14 is connected to the inner panel 202 of the vehicle back door 200 by inserting a fastening member such as a screw (not shown) into the through hole 14a in a state of being in contact with the inner panel 202 of the vehicle back door 200. The connecting portion 14 is a portion that does not enter the inside of the opening hole 21 of the interior trim 40.

As shown in FIG. 3, the hinge fixing bracket 20 is fixed to the upper end portion 101 of the vehicle 100 inside the opening 102 of the vehicle 100. The hinge fixing bracket 20 supports the connecting shaft 30 so as to be rotatable. More specifically, the hinge fixing bracket 20 has a plate-shaped support plate 20a and a support protrusion 20b protruding from the upper surface of the support plate 20a toward the upper end 101 of the vehicle 100. The support plate 20a is fixed by the fixing mechanism 104 in a state of being separated from the upper end 101 of the vehicle 100. The support protrusion 20b protrudes from the support plate 20a to the extent that it does not come into contact with the upper end 101 of the vehicle 100. Both ends of the connecting shaft 30 are rotatably supported by the support protrusion 20b.

Further, the support plate 20a is provided with a through hole 20c that penetrates the plate thickness. The connecting portion 13 of the hinge portion 10 is always inserted into the through hole 20c of the support plate 20a. The fixing portion 11 of the hinge portion 10 is fixed to both ends of the connecting shaft 30 supported by the support protruding portion 20b. The fixing portion 11 and the connecting shaft 30 may be fixed by, for example, pressing the end portion of the connecting shaft 30 into the fixing portion 11, or the end portion of the connecting shaft 30 may be inserted into the fixing portion 11 and adhered. It may be connected with an agent or the like.

In the door opening / closing structure 1 configured in this way, the vehicle back door 200 is supported by the upper end portion 101 of the vehicle 100 by the cooperation of the two hinge portions 10, the hinge fixing bracket 20, and the connecting shaft 30. doing. Further, when the vehicle back door 200 is opened and closed, the vehicle back door 200 rotates about the axis m of the connecting shaft 30. Therefore, it can be said that the connecting shaft 30 is provided so as to be the center of rotation of the vehicle back door 200. Since the connecting shaft 30 is connected to the vehicle back door 200 by the two hinge portions 10, it rotates in synchronization with the rotation of the vehicle back door 200. The through hole 20c of the support plate 20a of the hinge fixing bracket 20 is set to a size such that the connecting portion 13 does not come into contact with the support plate 20a when the hinge portion 10 rotates about the axis m of the connecting shaft 30. Has been done.

In this embodiment, the following actions and effects can be obtained.
(1) In the present embodiment, each of the two hinge portions 10 is integrally connected by a connecting shaft 30. Therefore, even if a twisting force acts on the vehicle back door 200 when the vehicle back door 200 is closed, the operations of the two hinge portions 10 are synchronized with each other. Therefore, even if the vehicle back door 200 is closed so as to be twisted, the operations of the two hinge portions 10 are synchronized. Therefore, the vehicle back door 200 rotates toward the opening 102 of the vehicle 100 in a state where the twist is suppressed. Therefore, the twisting of the vehicle back door 200 can be suppressed.

(2) In the present embodiment, an arm type hinge is adopted as the hinge portion 10. Since the arm-type hinge has a portion that is greatly deformed in order to avoid interference with surrounding parts when the back door 200 for a vehicle is opened and closed, for example, the arm portion 12, the degree of freedom in design according to the location of use is high. On the other hand, the distance from the fixed portion 11 to which the connecting shaft 30 which is the center of rotation is connected to the connecting portion 14 connected to the vehicle back door 200 becomes long. Therefore, the support rigidity of the hinge portion 10 is lowered as compared with the case where the hinge portion 10 is a pin hinge, and a torsional force is likely to act on the vehicle back door 200. Therefore, it is possible to suppress the torsional force acting on the vehicle back door 200 while maintaining the degree of freedom in designing the hinge portion 10.

(3) In the present embodiment, since the inner panel 202 and the outer panel 203 are made of resin, the weight of the vehicle back door 200 can be reduced. On the other hand, the torsional rigidity of the vehicle back door 200 becomes disadvantageous, but since each of the two hinge portions 10 is integrally connected by the connecting shaft 30, the vehicle back door 200 is closed so as to be twisted. Even if it does, the twisting of the vehicle back door 200 can be suppressed. Therefore, it is possible to reduce the weight of the vehicle back door 200 and suppress the twisting of the vehicle back door 200 at the same time.

(4) The operator of the vehicle door frequently puts his / her hand at a position away from the center of the vehicle door to close it when the vehicle door is the vehicle back door 200. Therefore, in the present embodiment, the twisting of the vehicle back door 200 can be more preferably suppressed.

(5) If the vehicle back door 200 is assembled to the vehicle 100 in a twisted state, the vehicle back door 200 may not be properly locked to the vehicle 100.
In that respect, in the present embodiment, the twisting of the vehicle back door 200 is suppressed by integrally connecting the two hinge portions 10 by the connecting shaft 30. Therefore, the vehicle back door 200 and the vehicle 100 can be appropriately locked.

In addition, this embodiment can be implemented by changing as follows. The present embodiment and the following modified examples can be implemented in combination with each other within a technically consistent range.
〇 The vehicle back door 200 has an opening / closing direction A that is the vertical direction of the vehicle 100. For example, the vehicle back door is a double-door type vehicle that opens / closes in the direction B orthogonal to the opening / closing direction A, that is, the vehicle width direction. There may be.

〇 Not limited to the vehicle back door 200, for example, even if the vehicle door is provided in the vehicle width direction of the vehicle 100 and the opening / closing direction A is the front-rear direction of the vehicle 100, the door opening / closing structure 1 of the present embodiment. May be applied.

〇 The vehicle back door 200 is provided with a vehicle window panel 204 made of glass or resin glass. For example, the door opening / closing structure 1 of the present embodiment is used for the purpose of opening / closing the vehicle window panel 204. You may. That is, the vehicle window panel 204 may be used as an example of the vehicle door.

〇 The hinge portion 10 is not limited to the arm type hinge. For example, it may be changed as follows.
As shown in FIG. 4, the two hinge portions may be embodied in the pin hinge 50. The two pin hinges 50 include a fixing member 51 fixed to the upper end 101 (see FIG. 1) of the vehicle 100 and a connecting member 52 connected to the vehicle back door 200. The fixing member 51 and the connecting member 52 are each provided with a connecting protrusion 53 to which the connecting shaft 30 is connected. Each of the fixing member 51 and the connecting protrusion 53 of the connecting member 52 is provided with a through hole through which the connecting shaft 30 is inserted. The connecting shaft 30 is inserted through the through hole in the connecting protrusion 53 of the fixing member 51 so as to be rotatable about the axis m as the center of rotation. The connecting shaft 30 and the connecting member 52 are inserted through a through hole in the connecting protrusion 53 of the connecting member 52 so that they can rotate integrally with the axis m of the connecting shaft 30 as the center of rotation. That is, the pin hinge 50 is configured so that the connecting member 52 and the connecting shaft 30 can rotate synchronously when the vehicle back door 200 is opened and closed. Even if it is changed in this way, the same operation and effect as in this embodiment can be obtained. When the pin hinge 50 is adopted as the hinge portion, the hinge fixing bracket 20 of the present embodiment is omitted.

〇 The inner panel 202 and the outer panel 203 are made of resin, but they may be made of metal such as aluminum.
〇 Three or more hinge portions 10 may be provided. In this case, it is preferable that the connecting shaft 30 is integrally connected to the fixing portions 11 of all the hinge portions 10. When three or more hinge portions 10 are provided, the plurality of hinge portions 10 are arranged at least near both ends of the support portion 201 in the direction B orthogonal to the opening / closing direction A while sandwiching the center line C of the vehicle back door 200. Change to be done.

〇 Further, when three or more hinge portions 10 are provided, the number of connecting shafts 30 is not limited to one. For example, a connecting shaft for integrally connecting adjacent hinge portions 10 among the plurality of hinge portions 10 may be provided between the hinge portions 10.

〇 In the above modification example, three or more hinge portions 10 are provided, but the pin hinge 50 may also be provided with three or more. Even when three or more pin hinges 50 are provided, the number of connecting shafts is appropriately changed as in the case where three or more hinge portions 10 are provided.

〇 The fixing portion 11 to which the connecting shaft 30 is fixed has a cylindrical shape, and the connecting shaft 30 is fixed by being inserted into the fixing portion 11, but the present invention is not limited to this. For example, the fixing portion 11 may be cylindrical, and the connecting shaft 30 may be fixed to one of the pair of circular surfaces of the cylindrical fixing portion 11.

Further, in the above modification, the same connecting shaft 30 is inserted through the through hole of the connecting protrusion 53 of the fixing member 51 of the pin hinge 50 and the through hole of the connecting member 52, but the present invention is not limited to this. For example, a rotation shaft is separately inserted into a through hole of a fixing member 51 of each of the plurality of pin hinges 50 and a connection projection 53 of the connecting member 52, and the connecting members 52 of the adjacent pin hinges 50 are integrally connected by the connecting shaft 30. You may change it to.

That is, the connecting shaft 30 may be provided so that the connecting members 52 of the plurality of hinge portions 10 or the plurality of pin hinges 50 can operate in synchronization with each other according to the opening and closing of the vehicle back door 200.

〇 The connecting shaft 30 is not limited to a columnar shape. It may be a square columnar or a cylindrical shape. That is, the shape of the connecting shaft 30 may be appropriately changed as long as the connecting members 52 of the plurality of hinge portions 10 or the plurality of pin hinges 50 can operate in synchronization with each other according to the opening and closing of the vehicle back door 200. ..

〇 The hinge fixing bracket 20 may be changed in any way as long as the connecting shaft 30 can be rotatably supported. For example, in the present embodiment, the hinge fixing bracket 20 has a support plate 20a and a support protrusion 20b, but the present invention is not limited to this. For example, the hinge fixing bracket 20 may be configured by a block member that is curved according to the shape of the upper end portion 101 of the vehicle 100, and the connecting shaft 30 may be rotatably inserted into the block member.

〇 The vehicle back door 200 has an inner panel 202 and an outer panel 203, but is not limited to this. The vehicle back door 200 may be a door composed of one component.

〇 The door opening / closing structure was explained in detail as the vehicle back door opening / closing structure, but it is not limited to this. For example, the moving body may be changed from a vehicle to a drone, and the door opening / closing structure may be applied to the opening / closing structure of the drone door as the moving body door. In this case, it is assumed that the drone has an opening and the opening is opened and closed by the drone door. Drones are often required to be lightweight and have a degree of freedom in design shape. Therefore, by adopting the plurality of hinge portions 10 and the resin door of the present embodiment, the weight of the drone can be reduced and the degree of freedom in the design shape of the drone can be maintained.

1 ... Door opening / closing structure, 10 ... Hinge part, 11 ... Fixed part, 12 ... Arm part, 13 ... Connecting part, 14 ... Connecting part, 20 ... Hinge fixing bracket, 30 ... Connecting shaft, 50 ... Pin hinge as hinge part , 52 ... Connection member, 100 ... Vehicle, 102 ... Opening, 200 ... Vehicle back door as vehicle door, 201 ... Support, 202 ... Inner panel, 203 ... Outer panel, A ... Opening / closing direction, B ... Opening / closing direction Direction orthogonal to, C ... center line, m ... axis line, R ... radius of curvature.

Claims (4)

A door opening / closing structure in which an opening of a moving body is opened / closed by a moving body door.
A part of the opening becomes a support portion that rotatably supports the moving door.
The door opening / closing structure is
A plurality of hinge portions that are arranged at least near both ends of the support portion and include a connecting member that supports the mobile door on the support portion and is connected to the mobile door.
Among the connecting members of the plurality of hinge portions, the adjacent connecting members are integrally connected to each other and provided so as to be the rotation center of the moving body door so as to rotate the moving body door. A door opening / closing structure characterized by having a connecting shaft that rotates in synchronization. It has a hinge fixing bracket that supports the connecting shaft inside the opening.
The connecting member
A fixed portion integrally connected to the connecting shaft and
An arm that is curved so that the radius of curvature does not change around the axis of the connecting axis,
A connecting portion that integrally connects the fixing portion and the arm portion,
The door opening / closing structure according to claim 1, further comprising a connecting portion that is integrally connected to the arm portion and is connected to the moving body door. The moving body door is a vehicle door.
The door according to claim 1 or 2, wherein the vehicle door has a resin inner panel arranged inside the vehicle and a resin outer panel arranged outside the vehicle. Opening and closing structure. The moving body door is a vehicle door.
The vehicle door is any one of claims 1 to 3, wherein the vehicle door is a vehicle back door that opens and closes in the vertical direction of the vehicle as the moving body when the opening is viewed from the front. The door opening and closing structure described.