JP5556198B2 - Vehicle hinge device and vehicle - Google Patents

Description

  The present invention relates to a vehicle door hinge device for connecting a door to a vehicle body so that the door can be opened and closed. In particular, the vehicle body is caused by a vehicle front collision, a rear collision, a side collision or a rollover (including an offset collision; the same applies hereinafter). The present invention relates to a vehicle door hinge device configured to be able to open a door even when deformed. The present invention also relates to a vehicle in which a door is attached to a vehicle body through the vehicle door hinge device so that the door can be opened and closed.

  2. Description of the Related Art A vehicle door is widely attached to a vehicle body through a hinge device so as to be rotatable.

  When the vehicle collides forward, backward, side, or rolls over, the vehicle body or the door may be deformed, and the door may not be able to be opened with the hinge device as the center of rotation.

  Japanese Patent Application Laid-Open No. 2009-286390 describes an automobile safety device configured to inflate an inflatable member between a door frame and a door of a vehicle body at the time of a vehicle collision. In this way, by expanding the inflatable member between the door frame and the door at the time of a vehicle collision, even if the vehicle body or the door is deformed by the collision, a predetermined gap is maintained between the door frame and the door. Therefore, the door can be opened relatively easily after the collision.

  JP-T-2001-505154 describes an automobile configured such that the door hinge device is deformed or broken due to a load applied from the door to the door hinge device in front of the vehicle when the vehicle collides forward. Thus, when the door hinge device is deformed by the load from the door, excessive deformation of the door frame and the door is prevented.

JP2009-286390 Special table 2001-505154

  In JP 2009-286390 A, it is necessary to incorporate an inflatable portion and a gas generator for inflating the inflatable portion into a door frame or door of a vehicle body. However, it is not easy to secure a space for incorporating such a safety device into the door frame or door, and a significant structural change of the vehicle body or the door is required.

  In the above special table 2001-505154, the door hinge device is deformed by a load from the door at the time of a frontal collision of the vehicle. Therefore, even if the door is opened after the collision, it may be difficult to open the door.

  The present invention does not require a significant structural change of a door or a vehicle body, and can open the door more reliably in an emergency such as when a vehicle collides forward, backward, side, or rolls over. Another object of the present invention is to provide a vehicle in which the door is connected to the vehicle body by the door hinge device so as to be opened and closed.

The vehicle door hinge device of the present invention (Claim 1) is a vehicle door hinge device for connecting the door to the vehicle body so as to be openable and closable. The vehicle door hinge device operates in a vehicle emergency and releases the connection between the vehicle body and the door. A vehicle body side bracket provided on the vehicle body, a door side bracket provided on the door, and a shaft member that rotatably connects the vehicle body side bracket and the door side bracket , The connection release means is configured to release the connection between the vehicle body side bracket and the door side bracket by separating the shaft member from at least one of the vehicle body side bracket and the door side bracket. The vehicle body side bracket and the door side bracket are each provided with a shaft member insertion hole through which the shaft member is inserted. One end is press-fitted into a shaft member insertion hole of one of the vehicle body side bracket and the door side bracket (hereinafter referred to as a shaft member press fitting side bracket), and the other end side is the other of the vehicle body side bracket and the door side bracket (hereinafter referred to as a shaft). (Referred to as a member rotation side bracket), and the connection release means includes a gas generator, and the shaft is driven by the generated gas pressure from the gas generator. The one end side of the shaft member is configured to be pulled out from the shaft member insertion hole of the member press-fitting side bracket .

A vehicle door hinge device according to a second aspect is the vehicle door hinge device according to the first aspect , wherein the shaft member insertion hole of the shaft member press-fitting side bracket includes a small-diameter portion into which the one end side of the shaft member is press-fitted, and the shaft member of the small-diameter portion. A large-diameter portion that is continuous in the extending direction and has a diameter larger than the small-diameter portion; and a step portion formed between the small-diameter portion and the large-diameter portion. An extruded body that pushes out the shaft member from the shaft member insertion hole by a generated gas pressure from the vessel is disposed, and the extruded body pushes the shaft member from the shaft member insertion hole and then engages with the stepped portion. It is characterized by being comprised so that it may match.

The vehicle door hinge device according to a third aspect is the vehicle door hinge device according to the second aspect , wherein the small diameter portion and the large diameter portion are arranged coaxially, and the step portion extends over the entire circumference of the inner peripheral surface of the shaft member insertion hole. It is characterized by being formed.

The vehicle according to the present invention (Claim 4 ) is such that the door is attached to the vehicle body through the vehicle door hinge device according to any one of Claims 1 to 3 so as to be opened and closed.

The vehicle according to claim 5 is the vehicle according to claim 4 , wherein the vehicle includes an airbag device for inflating an airbag in a passenger compartment to restrain an occupant, and the connection release means of the vehicle door hinge device includes: When the door is opened after the airbag device is activated, the connection between the vehicle body and the door is released.

  In the door hinge device of the present invention (Claim 1), in an emergency such as a case where the vehicle has a front collision, a rear collision, a side collision or a rollover (hereinafter, these may be collectively referred to as a collision). Since the connection between the vehicle body and the door is released by the connection release means, even if the vehicle body or the door is deformed due to a collision or the like so that the door cannot be opened by a normal opening operation centered on the door hinge device, The door can be opened by removing the door from the vehicle body. As a result, the door can be opened more reliably in an emergency such as a vehicle collision.

In the vehicle of the present invention (Claim 4 ), the door is substantially attached to the vehicle body by using the product of the present invention instead of the conventional door hinge device. No change is necessary. As a result, it is possible to provide a vehicle capable of opening the door more reliably in an emergency such as a vehicle collision at a relatively low cost.

In the aspect of Claim 1 , the door hinge apparatus is provided with the vehicle body side bracket provided in a vehicle body, the door side bracket provided in a door, and the shaft member which connected these brackets so that rotation was possible, and connection cancellation | release The means is configured to release the connection between the brackets by separating the shaft member from at least one of the vehicle body side bracket and the door side bracket. Therefore, for example, compared to a case where the connection between the vehicle body and the door is released by releasing the connection between the vehicle body and the vehicle body side bracket or the door and the door side bracket, the configuration of the door hinge device itself, A coupling structure between the vehicle body and the vehicle body side bracket or a coupling structure between the door and the door side bracket can be simplified. Further, by separating the shaft member from these brackets, the connection between the vehicle body and the door can be reliably released.

According to the first aspect, one end side of the shaft member is press-fitted into the shaft member insertion hole of one of the vehicle body side bracket and the door side bracket (shaft member press fitting side bracket), and the other of the vehicle body side bracket and the door side bracket. Since the other end side of the shaft member is rotatably inserted into the shaft member insertion hole of the (shaft member rotation side bracket), the connection structure between the vehicle body side bracket and the door side bracket is simple, and the shaft member It is very easy to attach the shaft member to the press-fit bracket. Further, when releasing the connection between the vehicle body side bracket and the door side bracket, it is only necessary to push out the shaft member from the shaft member insertion hole of the shaft member press-fitting side bracket. can do.

In the first aspect of the present invention, the connection release means of the door hinge device includes a gas generator, and is configured to push out the shaft member from the shaft member insertion hole of the shaft member press-fitting side bracket by the generated gas pressure from the gas generator. Therefore, the structure is simple and the control is easy.

In the aspect of claim 2 , the shaft member insertion hole of the shaft member press-fitting side bracket is connected to the small-diameter portion in which one end side of the shaft member is press-fitted and the extending direction of the shaft member of the small-diameter portion, and has a diameter larger than the small-diameter portion. A large-diameter portion and a step portion formed between the small-diameter portion and the large-diameter portion, and the shaft member is inserted into the large-diameter portion by the generated gas pressure from the gas generator. An extruded body to be pushed out from the insertion hole is arranged. The extruded body pushes out the shaft member from the shaft member insertion hole, and then comes into contact with a stepped portion between the large diameter portion and the small diameter portion in the shaft member insertion hole. Thereby, the shaft member insertion hole is closed by the extruded body, and the generated gas from the gas generator is prevented from leaking through the shaft member insertion hole.

In this case, as shown in claim 3 , the small diameter portion and the large diameter portion are arranged coaxially, and a step portion is formed between the small diameter portion and the large diameter portion over the entire circumference of the inner peripheral surface of the shaft member insertion hole. Comes into contact with this step portion over the entire circumference of the inner peripheral surface of the shaft member insertion hole, and the shaft member insertion hole after the extruded body pushes the shaft member out of the shaft member insertion hole has high airtightness.

According to a fifth aspect of the present invention, the connection release means of the door hinge device releases the connection between the vehicle body and the door when the door is opened after the airbag device installed in the vehicle interior of the vehicle body is activated. It is configured. This prevents inadvertently releasing the connection between the vehicle body and the door during normal times when the vehicle does not encounter a collision or the like. Further, since the connection between the vehicle body and the door is not released at the time of a small collision that does not cause the airbag device to operate, it is not necessary to replace the door hinge device at the time of vehicle repair, and the repair cost can be reduced.

1 is a side view of the vicinity of a front door of a vehicle in which a door is attached to a vehicle body so as to be opened and closed via a vehicle door hinge device according to an embodiment. It is the II-II sectional view taken on the line of FIG. (A) is an elevation view of the door hinge device of FIG. 2, (b) is a view taken along arrow B-B of (a), and (c) is CC of FIG. (A). FIG. It is a disassembled perspective view of the vehicle body side bracket of the door hinge apparatus of FIG. 2, a door side bracket, and a hinge pin. It is a disassembled perspective view of the vehicle body side bracket of FIG. It is the VI-VI sectional view taken on the line of FIG.3 (b). It is sectional drawing of the same part as FIG. 6 which shows the time of the connection cancellation | release of a vehicle body side bracket and a door side bracket. It is a schematic circuit diagram of the vehicle door hinge apparatus of FIG.

  Embodiments of the present invention will be described below with reference to the drawings. The following embodiment shows an example in which the present invention is applied to a door hinge device for attaching a door for a front seat of a vehicle to a vehicle body. However, the present invention is not limited to a door (for example, for a rear seat). The present invention can also be applied to a door hinge device for attaching a door or a rear door of a vehicle body to a vehicle body.

  FIG. 1 is a side view of the vicinity of a front seat door of a vehicle in which the door is attached to the vehicle body through the vehicle door hinge device according to the embodiment so as to be opened and closed. FIG. 2 is a sectional view taken along line II-II in FIG. FIG. 3 (a) is an elevation view of the door hinge device, FIG. 3 (b) is a view taken along the line BB in FIG. 3 (a), and FIG. 3 (c) is the third view. It is CC line arrow directional view of figure (a). FIG. 4 is an exploded perspective view of the vehicle body side bracket, door side bracket and hinge pin of the door hinge device. FIG. 5 is an exploded perspective view of the vehicle body side bracket of FIG. FIG. 6 is a cross-sectional view taken along the line VI-VI in FIG. FIG. 7 is a cross-sectional view of the same part as in FIG. FIG. 8 is a schematic circuit diagram of the vehicle door hinge device.

  As shown in FIG. 1, a front seat door (hereinafter abbreviated as a door) 3 is attached to a vehicle body 2 of a vehicle 1 via a door hinge device 4 so as to be opened and closed. The door hinge device 4 is rotatably connected to the vehicle body 2 on the front edge side of the door 3. In FIG. 1, two door hinge devices 4 are provided at the front edge of the door 3 at intervals in the vertical direction, but the number and arrangement of the door hinge devices 4 are not limited to this. The door 3 includes a latch mechanism (not shown) for locking the rear edge side of the door 3 to the vehicle body when the door 3 is closed, knobs 3a and 3b for operating the latch mechanism, and the latch A locking device 7 (FIG. 8) for locking the mechanism is provided. When the knob 3a is operated from the outside of the vehicle or the knob 3b is operated from the vehicle interior side when the locking device 7 is in the unlocked state, the latch device releases the locking of the door 3.

  In this embodiment, the vehicle 1 is provided with a collision detection sensor 5 (FIG. 8) for detecting the front collision, rear collision, side collision and rollover of the vehicle 1. Further, in the vehicle compartment of the vehicle 1, an airbag is inflated in the vehicle compartment at the time of the front collision, the rear collision, the side collision, and the rollover of the vehicle 1 based on the detection result of the collision detection sensor 5. An airbag device (not shown) that restrains the passenger is provided. The airbag apparatus includes an airbag gas generator 6 (FIG. 8). When a collision of the vehicle 1 is detected by the collision detection sensor 5, the gas generator 6 is operated to generate a gas. The airbag is inflated into the vehicle interior by the gas from the gas generator 6.

  The configuration of the door hinge device 4 will be described in detail below. In the following description, the up / down direction, the left / right direction, and the front / rear direction coincide with the up / down direction, the left / right direction, and the front / rear direction of the vehicle body 2 in a state where the door hinge device 4 is attached to the vehicle body 2.

  The door hinge device 4 includes a vehicle body side bracket 10 attached to the vehicle body 2, a door side bracket 20 attached to the door 3, a hinge pin 30 as a shaft member that rotatably connects these brackets 10 and 20, A hinge release mechanism 40 for releasing the hinge pin 30 from the brackets 10 and 20 to release the connection between the brackets 10 and 20 and a control device 60 for the connection release mechanism 40 are provided.

  In this embodiment, the hinge pin 30 includes a rod-shaped shaft portion 31 and a flange portion 32 that projects radially from the outer peripheral surface of one end side (rear end side) of the shaft portion 31 in the axial center line direction. Yes. In this embodiment, the vehicle body side bracket 10 and the door side bracket 20 are rotatably connected by a pair of upper and lower hinge pins 30. In this embodiment, the hinge pin 30 is made of a metal material such as steel. In addition, the material which comprises the hinge pin 30 is not limited to this.

  As shown in FIGS. 3 to 5, in this embodiment, the vehicle body side bracket 10 includes a pair of foot pieces 11 arranged along the outer surface of the vehicle body 2, and a pair of foot pieces 11. 2 standing outwardly projecting pieces 12, hinge pin press-fitting sleeves 13 provided on each standing piece 12, and an inner hole disposed between the standing pieces 12, 12. It has the tubular body 41 etc. which have 41a.

  As shown in FIG. 5, the inner hole 41a of the tubular body 41 passes through the tubular body 41 in the axial direction. The tubular body 41 is arranged with the axial direction as the vertical direction. Standing piece portions 12 are respectively arranged so as to close the upper end side and the lower end side of the tubular body 41. The peripheral portion on the upper end side of the tubular body 41 is airtightly coupled to the lower surface of the upper standing piece portion 12 by welding or the like over the entire circumference, and the peripheral portion on the lower end side of the tubular body 41 is the lower standing piece portion. The upper surface of 12 is hermetically coupled by welding or the like over the entire circumference. In addition, the connection method to each standing piece part 12 of the both ends of the tubular body 41 is not limited to welding. The foot piece portion 11 connected to the upper standing piece portion 12 extends upward from the base end of the standing piece portion 12, and the foot piece portion 11 connected to the lower standing piece portion 12 is connected to the standing piece portion 12. It extends downward from the base end of. Each foot piece 11 is provided with a bolt insertion hole 14 (FIG. 3 (c)) through which a bolt 51 for fixing the foot piece 11 to the vehicle body 2 is inserted.

  Each standing piece 12 is provided with a sleeve mounting opening 12a (FIG. 5) penetrating the standing piece 12 in the vertical direction. These sleeve mounting openings 12 a communicate with the inner holes 41 a of the tubular body 41, respectively. The sleeve attaching port 12a of the upper standing piece 12 and the sleeve attaching port 12a of the lower standing piece 12 are arranged concentrically with each other. As shown in FIGS. 6 and 7, the peripheral edge of the sleeve mounting opening 12 a of the upper standing piece 12 is a concave step 12 b that is recessed downward from the upper surface of the standing piece 12. The peripheral edge portion of the sleeve mounting opening 12 a of the portion 12 is a concave step portion 12 b that is recessed upward from the lower surface of the standing piece portion 12. The depth of the recessed step portion 12b is equal to or slightly shallower (for example, about 0.1 to 0.5 mm) than the thickness of a flange portion 13b of a sleeve 13 described later.

  As shown in FIG. 5, the sleeve 13 has a substantially cylindrical tube portion 13a and a flange portion 13b projecting radially from the outer peripheral surface of one end side in the tube axis direction of the tube portion 13a. As shown in FIGS. 6 and 7, the inner hole (reference numeral omitted) of the cylindrical portion 13a passes through the cylindrical portion 13a in the direction of the axis of the cylindrical axis. The one end side of the inner hole of the cylindrical portion 13a is a small diameter portion 13c having a smaller diameter than the shaft portion 31 of the hinge pin 30, and the other end side is a large diameter portion 13d having a larger diameter than the small diameter portion 13c and the shaft portion 31. It has become. The small diameter portion 13c and the large diameter portion 13d are formed coaxially. The distal end side of the shaft portion 31 is press-fitted into the small diameter portion 13c. That is, in this embodiment, the vehicle body side bracket 10 is a shaft member press fitting side bracket.

  In the sleeve 13 of the upper standing piece 12, the cylindrical portion 13 a is inserted into the sleeve mounting opening 12 a with the flange portion 13 b facing up, and the flange portion 13 b is disposed in the recessed step portion 12 b on the upper surface of the standing piece portion 12. Then, it is coupled to the bottom surface of the concave step portion 12b by welding or the like. Further, the sleeve 13 of the lower standing piece 12 has the cylindrical portion 13a inserted into the sleeve mounting opening 12a with the flange portion 13b facing downward, and the flange portion 13b is a concave step portion 12b on the lower surface of the standing piece 12. It arrange | positions in and is couple | bonded by welding etc. to the bottom face of this concave step part 12b. Each flange portion 13b is coupled to the bottom surface of each concave step portion 12b over the entire circumference, so that each sleeve mounting opening 12a and each sleeve 13 are hermetically closed. In addition, the connection method of each flange part 13b to the bottom face of each recessed step part 12b and the closing method of each sleeve attachment port 12a are not limited to this.

  In this embodiment, balls 42 as extruded bodies are arranged in the large diameter portions 13 d of the respective sleeves 13. The diameter of the ball 42 is slightly smaller than the inner diameter of the large diameter portion 13d of each sleeve 13 and larger than the inner diameter of the small diameter portion 13c. As a result, the ball 42 can move in the cylindrical axis direction of the sleeve 13 in the large diameter portion 13d of each sleeve 13, and cannot enter the small diameter portion 13c. In this embodiment, the length of the cylindrical portion 13 a of each sleeve 13 in the cylinder axis direction is approximately equal to the total length of the press-fit length of each shaft portion 31 into the sleeve 13 and the diameter of each ball 42. It has become. Further, the length of the small diameter portion 13c of each sleeve 13 in the cylinder axis direction is about half or shorter than the press-fitting length of the shaft portion 31 into the sleeve 13 (for example, to the sleeve 13 of the shaft portion 31). 25 to 50%, preferably about 40 to 50% of the press-fitted length. The ball 42 is made of a hard material such as steel. In addition, the material which comprises the ball | bowl 42 is not limited to steel.

  A damper 43 is provided in each large diameter portion 13d of each sleeve 13 to prevent the balls 42 from rattling. Each damper 43 is inserted into the large-diameter portion 13d from the inner hole 41a side of the tubular body 41 so as to fill a gap between the inner peripheral surface of the large-diameter portion 13d of each sleeve 13 and the outer surface of each ball 42. Has been. A flange portion 43 a is provided on the rear end side in the insertion direction of each damper 43 into each sleeve 13, and this flange portion 43 a overlaps the peripheral edge portion on the other end side of each sleeve 13. An annular lock sleeve 44 is attached to the other end side of each sleeve 13 so as to press the flange portion 43 a against each sleeve 13, and the damper 43 is attached to each sleeve 13 by the lock sleeve 44. Is held in. Various methods, such as screwing and welding, can be adopted as a method for fixing each lock sleeve 44 to each sleeve 13. Each damper 43 presses each ball 42 against the tip surface of each shaft portion 31 in the large-diameter portion 13 d of each sleeve 13. This prevents the balls 42 from rattling in the large-diameter portion 13d due to vibration or the like while the vehicle 1 is traveling.

  Each lock sleeve 44 is provided with an opening 44a concentrically overlapping the large diameter portion 13b of each sleeve 13. The rear end face of each damper 43 is exposed in the opening 44a. When a gas generator 45 (described later) operates to generate gas in the inner hole 41a of the tubular body 41 and the gas pressure in the inner hole 41a rises, the dampers 43 of the dampers 43 are opened via the openings 44a of the lock sleeves 44a. This gas pressure acts on the rear end face. As shown in FIG. 7, each damper 43 can be deformed so as to enter the back side of the large diameter portion 13d (small diameter portion 13c side) while pushing and moving each ball 42 by this gas pressure.

  As a material constituting such a damper 43, for example, a rubber material or a porous material having relatively low rigidity is suitable. Specifically, it is preferable that the damper 43 is made of a silicone rubber that has a small change in rubber elasticity with respect to a change in temperature outside the vehicle and that provides stable vibration isolation. However, the material constituting the damper 43 is not limited to this.

  In this embodiment, each part of the vehicle body side bracket 10 other than the damper 43 is made of a metal material such as steel. In addition, the material which comprises each part of the vehicle body side bracket 10 is not limited to this.

  In this embodiment, a gas generator 45 for supplying high-pressure gas into the inner hole 41a of the tubular body 41 is attached near the middle of the tubular body 41 in the axial direction (vertical direction). In this embodiment, as shown in FIGS. 6 and 7, the gas generator 45 has a substantially cylindrical shape, and is provided with a gas ejection portion 45a on one end side (tip side) in the axial direction thereof. A current-carrying harness 46 is connected to the end side (rear end side). A gas generation operation signal is input from the control device 60 to the gas generator 45 via the harness 46. The control method of the operation timing of the gas generator 45 by the control device 60 will be described in detail later. The gas generator 45 may be of various forms such as an explosive type, a hybrid type that heats and expands high-pressure gas with an explosive, or a gas storage type that stores high-pressure gas and releases a gas by opening a valve with the explosive. Can be used.

  In this embodiment, a recess 41 b is formed near the middle of the tubular body 41 in the axial direction so that the outer peripheral surface of the tubular body 41 is partially recessed inward of the tubular body 41. A gas generator insertion port 41c communicating with the inner hole 41a of the tubular body 41 is provided near the center of the bottom surface of the recess 41b. A gas generator fixing sleeve 47 is fixed to the gas generator insertion port 41c by welding or the like. The sleeve 47 and the gas generator insertion port 41c are closed in an airtight manner. A gas ejection portion 45a on the distal end side of the gas generator 45 is inserted into the inner hole 41a from the gas generator insertion port 41c through the sleeve 47, and the gas generator 45 is fixed to the tubular body 41 by the sleeve 47. Yes. The sleeve 47 hermetically closes the space between the gas generator insertion port 41c and the gas generator 45. In this embodiment, the recess 41b is formed to separate the gas generator 45 from the door-side bracket 20 so that the door-side bracket 20 does not contact the gas generator 45 when the door is opened and closed.

  In this embodiment, the tubular body 41, the ball 42, the damper 43, and the gas generator 45 constitute a connection release mechanism 40 (connection release means). In addition, the structure of the connection cancellation | release mechanism 40 is not limited to this.

  The door-side bracket 20 includes a base piece portion 21 disposed along the front end surface of the door 3 and a pair of arm portions 22 that project forward from the upper side and the lower side of the base piece portion 21. ing. The base piece portion 21 is provided with a bolt insertion hole 22a (FIG. 3 (b)) through which a bolt 53 for fixing the base piece portion 21 to the door 3 is inserted. Each arm portion 22 is provided with a shaft portion insertion hole 23 (FIG. 4) through which the shaft portion 31 of the hinge pin 30 is rotatably inserted. That is, in this embodiment, the door side bracket 20 is a shaft member rotation side bracket. The shaft portion insertion hole 23 of the upper arm portion 22 and the shaft portion insertion hole 23 of the lower arm portion 22 are disposed concentrically. In this embodiment, a bearing 24 for reducing sliding resistance with the shaft portion 31 is provided in each shaft portion insertion hole 23. The inner diameter of each shaft portion insertion hole 23 (that is, the inner diameter of the bearing 24. The same applies hereinafter) is smaller than the outer diameter of the flange portion 32 of the hinge pin 30. In this embodiment, although each part of this door side bracket 20 is also comprised with metal materials, such as steel, the material which comprises each part of the door side bracket 20 is not limited to this.

  The vehicle body side bracket 10 is disposed between the arm portions 22 of the door side bracket 20, the upper arm portion 22 faces the upstanding piece portion 12 of the vehicle body side bracket 10, and the lower arm portion. 22 faces the standing piece 12 on the lower side of the vehicle body side bracket 10. The upper hinge pin 30 is rotatably inserted into the shaft insertion hole 23 of the upper arm portion 22 of the door side bracket 20 with the shaft portion 31 facing the flange portion 32 upward, and the lower end side of the upper side of the vehicle body side bracket 10. It is press-fitted into the sleeve 13 of the upper standing piece 12. Further, the lower hinge pin 30 is rotatably inserted into the shaft insertion hole 23 of the lower arm portion 22 of the door bracket 20 with the shaft portion 31 facing the flange portion 32, and the upper end side of the lower hinge pin 30 is on the vehicle body side. The bracket 10 is press-fitted into the sleeve 13 of the standing piece 12 on the lower side. Accordingly, the door side bracket 20 is rotatably connected to the vehicle body side bracket 10 by the hinge pins 30. The coupling force between each hinge pin 30 and the sleeve 13 due to this press-fitting is that each hinge pin 30 comes out of each sleeve 13 when a pressing force of about 2 to 20 kN, particularly about 5 to 10 kN is applied from each ball 42 to each hinge pin 30. It is preferable that it is the grade which accept | permits.

  When the door 3 is attached to the vehicle body 2 by the door hinge device 4, as shown in FIG. 2, the foot pieces 11 of the vehicle body side bracket 10 are overlapped on the front edge side of the frame 2 a constituting the door frame of the vehicle body 2. The bolts 51 and nuts 52 are fixed to the frame 2a through the bolt insertion holes 14, and the base piece portion 21 of the door-side bracket 20 is overlaid on the outer surface of the frame 3a on the front end side of the door 3, so that each bolt insertion hole 22a. And is fixed to the frame 3a by bolts 53 and nuts 54. Reference numerals 2b and 3b in FIG. 2 indicate the outer plates of the vehicle body 2 and the door 3, respectively. In addition, the attachment method to the vehicle body 2 and the door 3 of the vehicle body side bracket 10 and the door side bracket 20 is not limited to this. For example, the vehicle body side bracket 10 and the door side bracket 20 may be fixed to the vehicle body 2 and the door 3 using fixing tools (for example, rivets) other than the bolts 51 and 53 and the nuts 52 and 54, respectively. The vehicle body side bracket 10 and the door side bracket 20 may be fixed to the vehicle body 2 and the door 3 using fixing means (for example, welding).

  In this embodiment, the control device 60 also serves as the control device for the airbag device. As shown in FIG. 8, the control device 60 includes a gas generator operation circuit (not shown) for the airbag device that outputs a gas generation operation signal to the collision detection sensor 5 and the gas generator 6 of the airbag device. And a door hinge device gas generator operation circuit (not shown) for outputting a gas generation operation signal to the gas generator 45 of the door hinge device 4 and a door knob detection for detecting that the knobs 3a and 3b of the door 3 are operated. A sensor 61 and a lock release circuit (not shown) for forcibly releasing the lock device 7 of the door 3 based on the detection result of the door knob detection sensor 61 are provided.

  When the collision detection sensor 5 detects a collision of the vehicle 1, the control device 60 outputs a gas generation operation signal to the gas generator 6 of the airbag device by the gas generator operation circuit for the airbag device. At the same time, the lock release circuit and the gas generator operating circuit for the door hinge device are set in a standby state, and when the operation of the knob 3a or 3b is detected by the door knob detection sensor 61, the lock of the door 3 is locked by the lock release circuit. A lock release signal is output to the device 7, and a gas generation operation signal is output from the door hinge device gas generator operation circuit to the gas generator 45 of the door hinge device 4. The unlock signal from the unlock circuit to the lock device 7 is preferably continuously output until the door 3 is opened from the time when the operation of the knob 3a or 3b is detected.

  Next, the operation of the vehicle 1 in which the door 3 is attached to the vehicle body 2 by the door hinge device 4 configured as described above will be described.

  When the vehicle 1 collides forward, backward, side, or rolls over, the collision detection sensor 5 detects this, and based on the detection result, the control device 60 activates the gas generator 6 of the airbag device to generate gas. The gas from the gas generator 6 inflates the airbag into the passenger compartment and restrains the occupant. At this time, the control device 60 puts the lock release circuit and the door hinge device gas generator operating circuit into a standby state. Thereafter, when the knob 3b is operated so that the occupant goes out of the vehicle or the knob 3a is operated from the outside of the vehicle, the lock release circuit outputs a lock release signal to the lock device 7 of the door 3 and the door hinge. The device gas generator operation circuit outputs a gas generation operation signal to the gas generator 45 of each door hinge device 4.

  The gas generator 45 of each door hinge device 4 is operated to generate gas by the gas generation operation signal from the gas generator operation circuit for the door hinge device. In this case, as shown in FIG. 7, gas is ejected from the gas ejection part 45a on the distal end side of the gas generator 45 into the inner hole 41a of the tubular body 41, and the inside of the inner hole 41a is in a high pressure state. The pressure of the gas presses the ball 42 in each sleeve 13 toward the small diameter portion 13 c of the sleeve 13 through the opening 44 a of each lock sleeve 44 and each damper 43. Thereafter, when the pressing force exceeds the coupling force between each hinge pin 30 and each sleeve 13, each hinge pin 30 is pushed by each ball 42 and comes out of each sleeve 13. At this time, each ball 42 contacts the stepped portion between the large diameter portion 13d and the small diameter portion 13c in the sleeve 13 after the hinge pin 30 is pushed out from the sleeve 13. This prevents the ball 42 from jumping out of the sleeve 13 and closes the sleeve 13 by the ball 42, so that gas leaks out of the tubular body 41 through the inner hole of the sleeve 13. Is also prevented. Thus, when both the hinge pins 30 come out of the sleeves 13, the connection between the vehicle body side bracket 10 and the door side bracket 20 is released. As a result, the door 3 can be opened by removing the door 3 from the vehicle body 2.

  As described above, in the door hinge device 4, when the vehicle 1 collides forward, backward, side, or rolls over, the connection release mechanism 40 causes the vehicle body side bracket 10 and the door side bracket 20 to be connected by the hinge pin 30. Since the connection is released, even if the vehicle body 2 or the door 3 is deformed due to a collision or the like so that the door 3 cannot be opened by a normal opening operation with the door hinge device 4 as the center of rotation, the door 3 is moved to the vehicle body 2. The door 3 can be opened so as to be removed from the door. Thereby, it is possible to open the door 3 more reliably after the collision of the vehicle 1 or the like.

  In this vehicle 1, the door 3 is attached to the vehicle body 2 by using the door hinge device 4 of the present invention instead of the conventional door hinge device. No major structural changes are necessary. As a result, it is possible to provide a vehicle capable of opening the door 3 more reliably after a vehicle collision or the like at a relatively low cost.

  In this embodiment, the door hinge device 4 includes a vehicle body side bracket 10 attached to the vehicle body 2, a door side bracket 20 attached to the door 3, and a shaft that rotatably connects these brackets 10 and 20 to each other. A hinge pin 30 as a member is provided, and the connection release mechanism 40 of the door hinge device 4 is configured to release the connection between the brackets 10 and 20 by separating the hinge pin 30 from the vehicle body side bracket 10. ing. Therefore, for example, the door hinge is compared with the case where the connection between the vehicle body 2 and the door 3 is released by releasing the connection between the vehicle body 2 and the vehicle body side bracket 10 or the door 3 and the door side bracket 20. The configuration of the device 4 itself, the coupling structure between the vehicle body 2 and the vehicle body side bracket 10 or the coupling structure between the door 3 and the door side bracket 20 can be simplified. Further, by separating the hinge pin 30 from the vehicle body side bracket 10, the connection between the vehicle body 2 and the door 3 can be reliably released.

  As described above, in this embodiment, the door side bracket 20 is provided with the shaft portion insertion hole 23, and the shaft portion 31 of the hinge pin 30 is rotatably inserted through the shaft portion insertion hole 23. The vehicle body side bracket 10 is provided with a hinge pin press-fitting sleeve 13, and the distal end side of the shaft portion 31 of the hinge pin 30 is press-fitted into the sleeve 13. Therefore, the connecting structure of the vehicle body side bracket 10 and the door side bracket 20 by the hinge pin 30 is simple, and the hinge pin 30 can be attached to the vehicle body side bracket 10 very easily. Further, when the connection between the vehicle body side bracket 10 and the door side bracket 20 is released, it is only necessary to push out the hinge pin 30 from the sleeve 13, so that the structure of the connection release mechanism 40 can be simplified.

  In this embodiment, the connection release mechanism 40 of the door hinge device 4 includes a gas generator 45 and is configured to push the hinge pin 30 out of the sleeve 13 by the generated gas pressure from the gas generator 45. Is simple and easy to control.

  In this embodiment, the inner hole of the sleeve 13 has a small-diameter portion 13c into which the shaft portion 31 of the hinge pin 30 is press-fitted, and a large-diameter portion 13d connected to the extending direction of the shaft portion 31 of the small-diameter portion 13c. A ball 42 for pushing out the hinge pin 30 from the sleeve 13 by the generated gas pressure from the gas generator 45 is disposed in the large diameter portion 13d. As described above, after the hinge pin 30 is pushed out of the sleeve 13, the ball 42 comes into contact with the stepped portion between the large diameter portion 13 d and the small diameter portion 13 c in the sleeve 13. Thereby, since the sleeve 13 is closed by the ball 42, the gas is prevented from leaking to the outside of the tubular body 41 through the inner hole of the sleeve 13. Therefore, even if one of the hinge pins 30 comes out of the sleeve 13 before the other hinge pin 30, the high pressure state in the inner hole 41 a of the tubular body 41 is maintained. You can get out of it. In this embodiment, the small-diameter portion 13c and the large-diameter portion 13d are coaxially arranged, and a step portion is formed between them all around the inner peripheral surface of the sleeve 13. Therefore, since the ball 42 contacts the step portion over the entire circumference of the inner peripheral surface of the sleeve 13, the airtightness of the sleeve 13 after the ball 42 pushes the hinge pin 30 from the sleeve 13 is high.

  In this embodiment, since the dampers 43 for pressing the balls 42 are provided in the respective sleeves 13, it is possible to prevent the balls 42 from rattling in the sleeves 13 due to vibration or the like while the vehicle 1 is traveling.

  In this embodiment, the control device of the door hinge device 4 causes the gas generator 45 to generate gas when the knobs 3a and 3b are operated after the airbag device installed in the passenger compartment of the vehicle body 2 is activated. It is configured as follows. Thereby, it is prevented that the connection release device 40 of the door hinge device 4 is inadvertently operated in a normal time when the vehicle 1 does not encounter a collision or the like. Further, since the connection release device 40 does not operate at the time of a small collision that does not activate the airbag device, it is not necessary to replace the door hinge device 4 at the time of repair after the collision, and the repair cost can be reduced.

  In the above-described embodiment, the control device 60 is configured to operate the connection release mechanism 40 of each door hinge device 4 when the vehicle 1 collides forward, backward, side, or rolls over. The connection release mechanism 40 of each door hinge device 4 may be operated in an emergency other than such a collision.

[Example of other control method of door hinge device]
In the above embodiment, the control device of the door hinge device 4 operates the gas generator 45 to generate a gas when the knobs 3a and 3b are operated after the airbag device installed in the vehicle interior of the vehicle body 2 is activated. However, the method of controlling the door hinge device 4 is not limited to this.

  For example, the door 3 and the door frame of the vehicle body 2 are provided with a deformation amount detecting device for detecting these deformation amounts. After the deformation amount detecting device detects a deformation amount equal to or greater than a predetermined value, the knobs 3a and 3b are When operated, the gas generator 45 may be configured to perform gas generation operation.

  In the above embodiment, the gas generator 45 is activated when the knobs 3a and 3b are operated after the airbag device is activated or after the deformation amount detection device detects a deformation amount equal to or greater than a predetermined value. Although configured, a dedicated switch for operating the gas generator 45 may be provided in the door 3 or the vehicle body 2 separately from the knobs 3a and 3b.

[Other configuration examples of the door hinge device]
In the above embodiment, the connection release mechanism 40 (connection release means) of the door hinge device 4 is configured to separate each hinge pin 30 from the vehicle body side bracket 10 and the door side bracket 20 by the gas pressure from the gas generator 45. However, the configuration of the connection release mechanism 40 is not limited to this. For example, the connection release mechanism 40 includes a spring held in a compressed state by a lever or the like, and releases the holding by the lever or the like by an electric signal in an emergency, and each hinge pin 30 is connected to the vehicle body side bracket 10 and the door by the force of this spring. It may be configured to be detached from the side bracket 20.

  In the above embodiment, before the connection release mechanism 40 is operated, the vehicle body side bracket 10 and the door side bracket 20 are rotatably connected by two upper and lower hinge pins 30 (shaft members). The structure of the shaft member for connecting the side bracket 10 and the door side bracket 20 is not limited to this. For example, the vehicle body side bracket 10 and the door side bracket 20 may be rotatably connected by a single hinge pin that passes through them in the vertical direction.

  In the above embodiment, the vehicle body side bracket 10 is provided with the hinge pin press-fitting sleeve 13 into which the distal end side of the shaft portion 31 is press-fitted, and the base end side of the shaft portion 31 is rotatable on the vehicle body side bracket 10. A shaft portion insertion hole 23 to be inserted is provided. On the contrary, a hinge pin press-fitting sleeve into which the front end side of the shaft portion 31 is press-fitted is provided on the door-side bracket 20, and A shaft portion insertion hole through which the proximal end side of the shaft portion 31 is rotatably inserted may be provided. In this case, the connection release mechanism 40 is provided in the door side bracket 20.

  In the above embodiment, the hinge pin 30 is pushed out from the sleeve 13 by the gas pressure generated from the gas generator 45, but the power source for pushing out the hinge pin 30 from the sleeve 13 is not limited to this. For example, the hinge pin 30 may be pushed out from the sleeve 13 using a spring or the like.

  Each of the above embodiments is an example of the present invention, and the present invention can take forms other than those shown in the drawings.

DESCRIPTION OF SYMBOLS 1 Vehicle 2 Car body 3 Door 4 Door hinge apparatus 10 Car body side bracket 11 Foot piece part 12 Standing piece part 13 Hinge pin press-fit sleeve 20 Door side bracket 21 Base piece part 22 Arm part 23 Shaft part insertion hole 24 Bearing 30 Hinge pin 31 Shaft part 32 Flange part 40 Connection release mechanism 41 Tubular body 42 Ball 43 Damper 44 Lock sleeve 45 Gas generator 46 Harness

Claims (5)

In the vehicle door hinge device for connecting the door to the vehicle body so that the door can be opened and closed,
A connection release means for operating in a vehicle emergency to release the connection between the vehicle body and the door ;
A vehicle body side bracket provided on the vehicle body;
A door-side bracket provided on the door;
Includes a <br/> a shaft member connected between該車side bracket and the door-side bracket rotatably,
The connection release means is configured to release the connection between the vehicle body side bracket and the door side bracket by separating the shaft member from at least one of the vehicle body side bracket and the door side bracket. A device,
The vehicle body side bracket and the door side bracket are each provided with a shaft member insertion hole through which the shaft member is inserted,
One end side of the shaft member is press-fitted into a shaft member insertion hole of one of the vehicle body side bracket and the door side bracket (hereinafter referred to as a shaft member press fitting side bracket), and the other end side of the vehicle body side bracket and the door side bracket. The shaft member insertion hole of the other (hereinafter referred to as the shaft member rotation side bracket) is rotatably inserted.
The connection release means includes a gas generator, and is configured to allow the one end side of the shaft member to be pulled out from the shaft member insertion hole of the shaft member press-fitting side bracket by the generated gas pressure from the gas generator. the vehicle door hinge and wherein the are. The shaft member insertion hole of the shaft member press-fitting side bracket according to claim 1 ,
A small diameter portion into which the one end side of the shaft member is press-fitted, and
A large-diameter portion that is continuous with the extending direction of the shaft member of the small-diameter portion and has a diameter larger than the small-diameter portion;
Having a step portion formed between the small diameter portion and the large diameter portion,
An extruded body that pushes out the shaft member from the shaft member insertion hole by the generated gas pressure from the gas generator is disposed in the large diameter portion,
The extruded body is configured to engage the stepped portion after the shaft member is pushed out from the shaft member insertion hole. 3. The vehicle according to claim 2 , wherein the small-diameter portion and the large-diameter portion are arranged coaxially, and the stepped portion is formed over the entire inner peripheral surface of the shaft member insertion hole. Door hinge device. A vehicle in which a door is attached to a vehicle body through the vehicle door hinge device according to any one of claims 1 to 3 so that the door can be opened and closed. In claim 4 , the vehicle includes an airbag device for inflating an airbag in a passenger compartment to restrain an occupant.
The connection release means of the vehicle door hinge device is configured to release the connection between the vehicle body and the door when the door is opened after the airbag device is activated. Vehicle.

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