JP4444157B2 - Door opener - Google Patents

Description

  According to the present invention, when the door is closed, the latch is engaged to pull the striker into a predetermined engagement position, the latch and the striker are engaged with each other, and the ratchet is engaged to release the latch engagement operation. The present invention relates to a door opening and closing device that prevents the opening movement of the door with respect to the vehicle body by restricting, while releasing the engagement state of the ratchet with the latch by driving the actuator when the opening operation is performed.

  Conventionally, a door opening / closing device is provided between a vehicle body and a door in a vehicle such as a four-wheeled vehicle. For example, a door opening / closing device is generally provided with a latch unit on a door and a striker on a vehicle body. The latch unit includes a latch that meshes with the striker and a ratchet that engages with the latch.

  According to this type of door opening and closing device, when the door is closed, for example, when the door is moved relative to the vehicle body, the latch that contacts the striker engages, and the striker is pulled into a predetermined engagement position to The strikers are engaged with each other. Further, in this state, when the ratchet is engaged with the latch, the latch release operation of the latch is restricted, and the door can be kept closed with respect to the vehicle body.

  On the other hand, when the door is opened, for example, when a handle provided on the door is operated, the ratchet engaged with the latch is released, the meshed state between the latch and the striker can be released, and the door is opened with respect to the vehicle body. It can be moved (see, for example, Patent Document 1).

JP-A-5-39687

  By the way, in an ordinary vehicle, an elastic member called a weather strip is provided between the vehicle main body and the door. This weatherstrip not only functions to prevent water such as rainwater from entering the vehicle through the gap between the vehicle body and the door when the door is closed, but also releases the ratchet engaged with the latch described above. In this case, it has a function to assist the opening movement of the door. That is, the weatherstrip that is elastically deformed in the closed state presses the door in the door opening direction against the vehicle body by the elastic restoring force when the engagement state of the ratchet with the latch is released. Accordingly, when the engagement state of the ratchet with the latch is released, the door is pushed open with respect to the vehicle main body by the elastic restoring force of the weather strip, so that the opening operation of the door can be easily performed.

  However, for example, in an environment where the temperature is low, the door and the weather strip may stick to each other due to freezing. In such a case, even if the engagement state of the ratchet with the latch is released, the elastic restoring force of the weather strip does not act effectively, and the door may remain in the closed state. The opening operation becomes very complicated. In particular, when the door is not provided with a handle for performing the door opening operation as in recent vehicles, it is quite difficult to open and move the door.

  In view of the above circumstances, an object of the present invention is to provide a door opening / closing device that can reliably open and move a door when the engagement state of the ratchet with the latch is released.

In order to achieve the above object, the door opening and closing apparatus according to claim 1 of the present invention is configured to bring the striker (S) into a predetermined engagement position by engaging the latch (12) when a door closing operation is performed. The door (D) with respect to the vehicle body (B) is retracted by engaging the latch (12) and the striker (S) with each other, and further engaging the ratchet (13) to restrict the engagement release operation of the latch (12 ). The door opening and closing device is configured to release the engagement state of the ratchet (13) with the latch (12) by driving the door opening actuator unit (50) when the door opening operation is performed. a is, between the latch (12) and the ratchet (13), when the ratchet (13) is operated so as to release the engagement to the latch (12) The linkage arm (18) for transmitting the operation of the ratchet (12) to the latch (12) is provided. When the engagement state of the ratchet (13) with the latch (12) is released by driving the door opening actuator unit (50), the ratchet (13 ) Is transmitted to the latch (12) by the linkage arm (18), and the latch (12) is disengaged to cause the striker (S) to deviate from the meshing position .

The door opening and closing device according to claim 2 of the present invention moves forward when the engagement state of the ratchet (13) with respect to the latch (12) is released in the above-described claim 1, and moves to the vehicle body (B) . On the other hand, a pressing means (60) for moving the door (D) in the opening direction is provided.

  According to the present invention, when the engagement state of the ratchet with the latch is released, the latch is released from the engagement position by driving the actuator, so that the striker deviates from the engagement position. The door can be surely opened and moved even if it is stuck to the weather strip.

  Exemplary embodiments of a door opening and closing device according to the present invention will be explained below in detail with reference to the accompanying drawings.

  1 and 2 show a door opening / closing device according to an embodiment of the present invention, and exemplify a door opening / closing device provided between a vehicle body and a door of a four-wheeled vehicle. As the four-wheeled vehicle to which the door opening / closing device is applied, as shown in FIG. 3, a two-seat type vehicle having one door D on each side of the vehicle body B is illustrated. The door D is hinged to the vehicle body B at each front edge, and can be opened and closed in the left-right direction with the front edge as a fulcrum. Although not clearly shown in the figure, a weather strip formed of an elastic material is provided between the periphery of the door D and the vehicle body B. Since the door opening and closing device provided between the door D and the vehicle main body B has a symmetric configuration with each other, in the following, on the right side of the vehicle (the driver's seat side in a right-hand drive vehicle) Only the door opening and closing device for opening / closing the door D positioned will be described.

  As shown in FIGS. 1 and 2, the door opening and closing device includes a latch unit 10 and a door opening actuator unit 50 in a vehicle body B.

  The latch unit 10 holds the door D in a fully closed state by engaging with a striker S provided at the rear edge of the door D when the door D is closed and moved, for example, relative to the vehicle body B. The latch housing 11 is provided with a latch 12 and a ratchet 13.

  The latch housing 11 has a cutout groove 11a through which the striker S can pass. The cutout groove 11a is attached to the vehicle main body B in a state where the cutout groove 11a is arranged in a movement area of the striker S accompanying opening / closing movement of the door D. is there.

  As shown in FIG. 4, the latch 12 rotates via a latch shaft 14 extending substantially horizontally along the front-rear direction of the vehicle body B at a position above the notch groove 11 a provided in the latch housing 11. It is arranged so that it has a meshing groove 12a, a hook part 12b and a locking part 12c.

  The engagement groove 12a is formed from the outer peripheral surface of the latch 12 toward the latch shaft 14, and has a width that can accommodate the striker S.

The hook portion 12b is a portion located on the vehicle outer side than the meshing groove 12a when the meshing groove 12a is opened downward. As shown in FIG. 4, the hook portion 12b stops at a position where the notch groove 11a of the latch housing 11 is opened when the latch 12 is rotated most counterclockwise, while the latch 12 is rotated clockwise in FIG. In the case of rotation (meshing operation), as shown in FIG. 6 through the state shown in FIG. 5, the overlapping portion of the latching groove 12a of the latch 12 and the notch groove 11a of the latch housing 11 is successively located behind the notch groove 11a (vehicle). After shifting to the inside, the position is formed so as to reach a position crossing the notch groove 11a of the latch housing 11.

  The locking portion 12c is a portion located on the vehicle inner side than the meshing groove 12a when the meshing groove 12a is opened downward. As shown in FIG. 4, the locking portion 12c crosses the notch groove 11a when the latch 12 is rotated most counterclockwise, and gradually inclines upward toward the back of the notch groove 11a (the vehicle inner side). It is constituted so that it stops in the state to do. Although not clearly shown in the drawing, a latch spring is provided between the latch 12 and the latch housing 11 to constantly bias the latch 12 counterclockwise in FIG.

  The ratchet 13 is rotated via a ratchet shaft 15 extending substantially horizontally along the front-rear direction of the vehicle body B at a position below the notch groove 11a of the latch housing 11 and outside the latch shaft 14. It is arranged so as to have a latch engaging portion 13a. The latch engaging portion 13a is a portion extending radially outward from the ratchet shaft 15 toward the vehicle inner side. The latch engaging portion 13a can be engaged with the hook portion 12b or the locking portion 12c of the latch 12 via the protruding end surface when the ratchet 13 rotates clockwise in FIG. Although not clearly shown in the drawing, a ratchet spring that constantly urges the ratchet 13 clockwise in FIG. 4 is provided between the ratchet 13 and the latch housing 11.

  The door opening / closing device is provided with a ratchet lever 16, a latch lever 17, a linkage arm 18, and an arm guide 19 on the outer surface of the latch housing 11 on the vehicle rear side.

  The ratchet lever 16 is rotatably disposed at an end portion of the ratchet shaft 15 protruding from the latch housing 11 toward the vehicle rear side. As shown in FIG. 1, the ratchet lever 16a, the first wire connecting portion 16b, a press relay part 16c, and an arm linkage part 16d. The ratchet connecting portion 16 a is a portion extending from the ratchet shaft 15 in the same direction as the latch engaging portion 13 a of the ratchet 13, and the latch engaging portion of the ratchet 13 via the connecting pin 20 penetrating the latch housing 11. 13a. The first wire connecting portion 16b is a portion extending from the ratchet shaft 15 toward the vehicle outer side. One end portion of the first wire cable W1 is connected to the distal end portion of the first wire connecting portion 16b. The press relay portion 16c extends obliquely from the ratchet shaft 15 toward the inside of the vehicle and has a press relay piece 16e. As shown in FIG. 2, the press relay piece 16 e is a portion provided integrally with the press relay portion 16 c so as to be wide in the front-rear direction of the vehicle. The arm linking portion 16d is a portion that extends from the tip of the ratchet coupling portion 16a toward the rear of the vehicle and then bends upward.

  The latch lever 17 is provided at the end of the latch shaft 14 protruding from the latch housing 11 toward the rear side of the vehicle in a manner interlocked with the latch shaft 14. As shown in FIGS. 1 and 2, the latch shaft 14 is provided. After being bent from the outer peripheral surface toward the rear side of the vehicle, the tip end portion is bent toward the radially outward direction of the latch shaft 14. The latch lever 17 is provided with a linkage pin 21 from the bent tip portion toward the vehicle rear side.

  The linkage arm 18 links between the arm linkage portion 16d of the ratchet lever 16 and the linkage pin 21 of the latch lever 17, and has a coupling shaft 18a at the base end portion and a linkage contact portion 18b at the distal end portion. have. The connecting shaft 18a protrudes from the base end portion of the linkage arm 18 toward the vehicle rear side, and is inserted into a shaft hole (not explicitly shown) formed in the arm linkage portion 16d, thereby allowing the arm linkage portion 16d. On the other hand, the linkage arm 18 is linked in a swingable manner. The linkage contact portion 18 b is a portion that is bent and extended from the distal end portion of the linkage arm 18 toward the latch housing 11, and has a contact surface 18 c that faces the peripheral surface of the linkage pin 21.

  The arm guide 19 is formed so as to abut on the side surface of the linkage arm 18 from the latch housing 11, and when the ratchet lever 16 rotates around the ratchet shaft 15, the linkage arm 18 is moved along the vertical direction in FIG. It has a guide function to move.

  The door opening actuator unit 50 is driven when a control signal is given from an opening / closing control unit 100 to be described later, and includes an output lever 52 inside the actuator housing 51 and a portion on the upper side of the actuator housing 51. Is provided with an open lever 53.

  The actuator housing 51 is attached to the lower end portion of the latch housing 11 and accommodates a cam gear 54 therein. The cam gear 54 is rotatably disposed on the actuator housing 51 via a cam gear shaft 55 that is substantially horizontal along the longitudinal direction of the vehicle, and is linked to the output shaft 57 a of the drive motor 57 via a reduction gear train 56. It is. The cam gear 54 is integrally provided with a circumferential cam 58. The circumferential cam 58 is formed so that the distance from the center of the cam gear shaft 55 to the circumferential surface gradually increases in the clockwise direction in FIG. 1, and is disposed on the end face of the cam gear 54 located on the vehicle front side. .

  The output lever 52 is rotatably disposed via a lever shaft 59 extending substantially horizontally along the front-rear direction of the vehicle body B at a position substantially below the latch shaft 14 below the ratchet shaft 15. It has a cam follower 52a. The cam follower 52a extends downward from the lever shaft 59 toward the shaft center of the cam gear 54, and its tip end abuts and engages with the outer circumferential surface of the circumferential cam 58 via the driven pin 52b. Yes. Although not clearly shown in the figure, a cam spring is provided between the cam follower 52 a and the actuator housing 51 so that the follower pin 52 b is always pressed against the outer peripheral surface of the peripheral cam 58.

  The open lever 53 is provided at the end of the lever shaft 59 protruding from the actuator housing 51 toward the front side of the vehicle so as to rotate integrally with the lever shaft 59, and the second wire connecting portion 53a and the pressing operation portion 53b are provided. Have. The second wire connecting portion 53a is a portion extending from the lever shaft 59 toward the vehicle outer side. One end portion of the second wire cable W2 is connected to the distal end portion of the second wire connecting portion 53a. The pressing operation portion 53b is a portion extending upward from the lever shaft 59, and has a pressing operation piece 53c at the tip thereof. As shown in FIG. 2, the pressing operation piece 53 c is a portion provided integrally with the pressing operation portion 53 b so as to be wide in the front-rear direction of the vehicle. In this pressing operation piece 53c, the swing movement area accompanying the swing of the pressing operation section 53b intersects the swing movement area of the press relay piece 16e in the ratchet lever 16, and the driven pin 52b of the output lever 52 is a circumferential cam. 58 is provided so as to be positioned slightly inward of the vehicle from the press relay piece 16e of the ratchet lever 16 when it abuts on the portion of 58 having the smallest diameter.

  Further, the door opening / closing device is provided with a pressing pin 60 on the latch housing 11. The pressing pin 60 has a large-diameter head 62 at the tip of a shaft portion 61 having a thin cylindrical shape. The head 62 faces the vehicle outside, and the shaft center of the shaft portion 61 is the vehicle body. The latch housing 11 is disposed so as to be able to advance and retract in a manner that is substantially horizontal along the left-right direction of B. As shown in FIG. 1, the head 62 of the pressing pin 60 is disposed at a portion of the latch housing 11 that is the outermost side of the vehicle, and as shown in FIG. 7, the rear edge side of the door D that is in the closed state. It faces the inward surface. On the other hand, as shown in FIGS. 1 and 2, the shaft portion 61 of the pressing pin 60 has its base end face opposed to the pressing relay piece 16e of the ratchet lever 16, and the ratchet lever 16 swings counterclockwise in FIG. It is provided so as to come into contact with the pressing relay piece 16e when moved. A return spring 63 is provided between the pressing pin 60 and the latch housing 11 to urge the pressing pin 60 toward the vehicle inward side at all times.

  On the other hand, the door opening and closing device includes an internal operation lever 70 in the vehicle compartment and an external operation lever 80 in a space F provided on the rear side of the vehicle body B as shown in FIG. The internal operation lever 70 and the external operation lever 80 are disposed so as to be swingable with respect to the vehicle main body B as shown in FIGS. 9 and 12, for example. The other end of the second wire cable W2 is connected to the internal operation lever 70, while the other end of the first wire cable W1 is connected to the interlocking lever 82 provided on the swing shaft 81 of the external operation lever 80. The parts are connected.

  As apparent from FIG. 3, the second wire cable W2 that links the latch unit 10 and the internal operation lever 70 extends downward from the latch unit 10 and then does not pass through the inside of the door D. It is laid inside the vehicle body B and extends forward of the vehicle, and after passing through the front edge of the door D, it is connected to an internal operation lever 70 in the vehicle compartment. The first wire cable W1 that links the latch unit 10 and the external operation lever 80 extends upward from the latch unit 10, and is then laid inside the vehicle body B and connected to the external operation lever 80. is there.

  A lid FC is provided in the space F in which the external operation lever 80 is provided. As shown in FIGS. 9 to 12, the lid FC is provided in such a manner that the external opening of the space F is opened and closed. It is configured to cover up. An opening / closing control pin P is provided between the lid FC and the vehicle body B. The opening / closing control pin P is moved forward and backward by driving the lid actuator FCA. When the lid FC is advanced and moved in the closed state, the lid FC is inserted into the locking hole H of the lid FC. It functions to prevent the opening movement of the lid FC while allowing the opening movement of the lid FC when it moves backward. Although the space F described above may be provided exclusively for the vehicle main body B, in the present embodiment, as shown in FIGS. 9 and 10, a recess for accommodating the fuel supply port FO is used. .

  FIG. 13 is a block diagram showing a control system of the door opening and closing apparatus described above. The acceleration sensor 101 shown in the figure detects acceleration generated in the vehicle and gives the detection result to the opening / closing control unit 100. For example, the authentication processing unit 102 performs authentication by wireless communication with the portable device 103 possessed by the user of the four-wheeled vehicle, and gives the authentication result to the opening / closing control unit 100. The door opening switch 104 is a switch operated when the door D is opened. In the present embodiment, as shown in FIG. 3, a door opening switch 104 is provided on a portion located near the rear side of the door D outside the vehicle body B and on the vehicle interior side of the door D. The lock switch 105 is a switch for invalidating the door opening switch 104 and is provided on the vehicle interior side of the door D. The oil filler port switch 106 is a switch for opening the lid FC of the space F described above, and is provided at an appropriate location in the vehicle compartment. The lock display unit 107 is for displaying whether or not the lock switch 105 is operated, and is adjacent to the lock switch 105. The lock display unit 107 may be anything as long as it can visually display the state of the lock switch 105. For example, the lock display unit 107 can be lit and displayed by a lamp or LED. The opening / closing control unit 100 opens based on programs and data given in advance when various information is given from the acceleration sensor 101, the authentication processing unit 102, the door opening switch 104, the lock switch 105, and the filler switch 106. This is for performing comprehensive control of the door actuator unit 50, the lid actuator FCA, the lock display unit 107, and the like.

  Hereinafter, operation | movement of the door opening / closing apparatus mentioned above is demonstrated sequentially. First, when the door D is in the open state with respect to the vehicle main body B, the latch unit 10 is arranged in the open position as shown in FIG. When the door D is closed from this state, the striker S provided on the door D enters the cutout groove 11a of the latch housing 11, and the striker S eventually comes into contact with the locking portion 12c of the latch 12. As a result, the latch 12 rotates clockwise in FIG. 4 against the elastic force of the latch spring. During this time, the ratchet 13 has the protruding end surface of the latch engaging portion 13a slidably contacting the outer peripheral surface of the latch 12 by the elastic force of the ratchet spring. Rotate to.

  When the door D is further closed from the above-described state, the amount of the striker S entering the notch groove 11a gradually increases, so that the latch 12 further rotates clockwise, and eventually the ratchet 13 as shown in FIG. The latch engaging portion 13 a reaches the engagement groove 12 a of the latch 12. In this state, the latching portion 12c of the latch 12 comes into contact with the latch engaging portion 13a of the ratchet 13, so that the latch 12 rotates counterclockwise (engagement) against the elastic restoring force of the latch spring. The release operation) is prevented. In addition, since the hook portion 12b of the latch 12 is disposed so as to cross the notch groove 11a, the striker S moves in a direction away from the notch groove 11a by the hook portion 12b, that is, the opening movement of the door D with respect to the vehicle body B. Will be blocked (half-latch state).

  When the door D is further closed from the half latch state described above, the striker S entering the notch groove 11a further rotates the latch 12 clockwise via the locking portion 12c, and the striker S is located behind the notch groove 11a. It is pulled in (inside the vehicle) and reaches the meshing position. During this time, the ratchet 13 rotates counterclockwise in FIG. 4 against the elastic force of the ratchet spring by the hook portion 12b of the latch 12 coming into contact with the upper surface of the latch engaging portion 13a, and the hook portion 12b of the latch 12 As soon as is passed, the elastic restoring force of the ratchet spring immediately rotates clockwise. As a result, as shown in FIG. 6, since the hook portion 12b of the latch 12 comes into contact with the latch engaging portion 13a of the ratchet 13, the latch 12 rotates counterclockwise against the elastic restoring force of the latch spring. Will be blocked. Even in this state, since the hook portion 12b of the latch 12 is arranged so as to cross the notch groove 11a, the hook portion 12b prevents the striker S from moving away from the back of the notch groove 11a (the vehicle inner side). Eventually, the door D is kept closed with respect to the vehicle body B (full latch state).

  In the fully latched state, as shown in FIG. 14, the driven pin 52 b of the output lever 52 in the door opening actuator unit 50 is in contact with the smallest diameter portion of the circumferential cam 58. The pressing operation piece 53c is located at a position separated from the pressing relay piece 16e at a position slightly inward of the vehicle from the pressing relay portion 16c of the ratchet lever 16, and the pressing relay piece 16e of the ratchet lever 16 is located. Is located at a position separated from the pressing pin 60, and the pressing pin 60 is in a position most retracted to the inside of the vehicle by the pressing force of the return spring 63.

  When the person holding the portable device 103 approaches the vehicle from the above-described full latch state, an authentication process is performed between the portable device 103 and the authentication processing unit 102. When it is determined that the portable device 103 is authentic as a result of the authentication process, the opening / closing control unit 100 described above enables the door opening switch 104 and monitors the door opening switch 104 (unlocking). Status).

  When the activated door opening switch 104 is turned ON, the opening / closing control unit 100 drives the drive motor 57 of the door opening actuator unit 50 to reverse the cam gear 54 as shown in FIGS. By rotating clockwise, the output lever 52 and the open lever 53 are rotated clockwise. As a result, the rotation of the open lever 53 is transmitted to the ratchet lever 16 via the pressing operation piece 53c and the pressing relay piece 16e, and the ratchet lever 16 and the ratchet 13 rotate counterclockwise. When the ratchet 13 rotates counterclockwise, the abutting engagement state between the hook portion 12b of the latch 12 and the latch engaging portion 13a of the ratchet 13 is released, and the latch 12 is moved by the elastic restoring force of the latch spring as shown in FIGS. Rotate counterclockwise at. Therefore, as shown in FIG. 4, the notch groove 11 a is opened, the striker S can be moved in a direction away from the notch groove 11 a, and the door D can be opened and moved with respect to the vehicle body B.

  At this time, as shown in FIG. 16, the linkage arm 18 moves downward as the ratchet lever 16 rotates, and the linkage contact portion 18 b of the linkage arm 18 comes into contact with the linkage pin 21 of the latch lever 17. The latch 12 rotates counterclockwise in the figure through the latch lever 17. As a result, the striker S that meshes with the latch 12 is pressed by the latch 12 in the notch groove 11a of the latch housing 11, and forcibly deviates from the meshing position toward the outside of the vehicle as shown in FIG. 6, FIG. 5, and FIG. As a result, the door D is pushed out of the vehicle body B to the outside of the vehicle.

  In addition, as shown in FIG. 16, the press relay piece 16 e advances and moves the pressing pin 60 with the rotation of the ratchet lever 16, so that the head 62 of the pressing pin 60 moves as shown in FIG. 8. The inner side of the rear edge of the door D is pressed, and the door D is pushed out of the vehicle main body B to the outside of the vehicle.

  As a result, even if the door D and the weather strip are stuck to each other at the time of freezing, the door D can be reliably opened without the need to open the door with the operation handle. It becomes.

  When it is determined that the portable device 103 is not authentic as a result of the authentication process described above, the opening / closing control unit 100 holds the door opening switch 104 in a disabled state (locked state). Accordingly, any operation of turning on the door opening switch 104 by a person who does not have the proper portable device 103 or operation of turning on the door opening switch 104 by a person who does not have the portable device 103 is ignored. become. In addition, when the user who has the authorized portable device 103 moves away from the vehicle after performing the opening operation or without performing the opening operation, the opening / closing control unit 100 The door opening switch 104 is restored to the invalidated state again. Therefore, it is possible to ensure a desired anti-theft property for the vehicle.

  On the other hand, when the lock switch 105 is turned on after entering the vehicle compartment from the opened state, the opening / closing control unit 100 holds the door opening switch 104 in a disabled state and opens the door through the lock display unit 107. The state in which the switch 104 is disabled is displayed. As a result, the occupant can be prompted to turn on the lock switch 105, and after the lock switch 105 is turned on, the door 104 is inadvertently accidentally turned on. It is possible to prevent the situation where D is in the open state.

  When the lock switch 105 is turned off, the opening / closing control unit 100 activates the opening switch 104 again. Therefore, if the opening switch 104 on the vehicle interior side is turned on, the opening operation by the operation handle is performed. It is possible to reliably open the door D without the need for.

  When the fuel supply port switch 106 is turned on after entering the vehicle compartment from the open state, the opening / closing control pin P is retracted by the lid actuator FCA, and the fuel supply port FO is opened. Therefore, fuel can be supplied by performing the above-described operation at the gas station.

  Further, when the vehicle acceleration measured based on the detection result of the acceleration sensor 101 exceeds a predetermined threshold, the opening / closing control unit 100 immediately drives the lid actuator FCA to open / close the control pin P. To degenerate move. The threshold value for acceleration may be set to a value when the vehicle collides, for example. As a result, even if a trouble occurs in the electric system due to an accident such as a collision and the opening actuator unit 50 cannot be driven, if the external operation lever 80 is operated from the opened fuel supply port FO, Since the ratchet lever 16 rotates counterclockwise from the state shown in FIG. 14 through the first wire cable W1, the contact engagement state between the hook portion 12b of the latch 12 and the latch engagement portion 13a of the ratchet 13 is released. The door D can be opened and moved. Of course, if the occupant can operate the internal operation lever 70, the open lever 53 rotates clockwise from the state shown in FIG. 14 through the second wire cable W2 by the operation. And the latch engagement portion 13a of the ratchet 13 are released, and the door D can be opened and moved. Therefore, even when a trouble occurs in the electric system due to an accident such as a collision, it is possible to prevent a situation where the occupant is trapped inside the vehicle.

  Thus, according to the vehicle to which the door opening and closing device is applied, when the engagement state of the ratchet 13 with respect to the latch 12 is released, the latch 12 is operated to release the engagement by driving the door opening actuator unit 50. Therefore, the striker S deviates from the meshing position, and the door D is pushed out of the vehicle. Even when the door D and the weather strip are stuck to each other during freezing, the operation handle It becomes possible to reliably open the door D without requiring a door opening operation. In this case, since the door opening operation by the operation handle is not required when the door D is opened, the operation handle can be omitted and the degree of freedom in vehicle design can be remarkably increased.

  In the above-described embodiment, the striker S is provided on the door D, while the latch unit 10 including the latch 12 is provided on the vehicle main body B. However, the latch unit 10 is provided on the door D, while the vehicle main body is provided. B may be provided with a striker S.

  In the above-described embodiment, the latch unit 10 is provided with the pressing pin 60 as the pressing means, and the pressing pin 60 presses the door D against the vehicle body B when the engagement state of the ratchet 13 with the latch 12 is released. However, the pressing pin 60 is not necessarily provided. When the pressing pin 60 is provided, it is not always necessary to provide the pressing pin 60 on the vehicle body B side, and the pressing pin 60 may be provided on the door D.

It is the figure which showed the door opening / closing apparatus which is embodiment of this invention. It is the II-II sectional view taken on the line in FIG. It is a side view which shows notionally the vehicle to which the door opening / closing apparatus shown in FIG. 1 is applied. It is a conceptual diagram which shows the state which has the latch applied to the door opening / closing apparatus shown in FIG. 1 in an open position. It is a conceptual diagram which shows the half latch state of the latch applied to the door opening / closing apparatus shown in FIG. It is a conceptual diagram which shows the full latch state of the latch applied to the door opening / closing apparatus shown in FIG. FIG. 4 is a plan view when the vehicle shown in FIG. 3 is in a closed state. It is a top view in case the vehicle shown in FIG. 3 will be in an open state. FIG. 4 is a plan view showing a closed state of a space in which an external operation lever is disposed in the vehicle shown in FIG. 3. FIG. 4 is a plan view showing an open state of a space in which an external operation lever is disposed in the vehicle shown in FIG. 3. FIG. 4 is a conceptual diagram illustrating a closed state of a space in which an external operation lever is disposed in the vehicle illustrated in FIG. 3. FIG. 4 is a conceptual diagram illustrating an open state of a space in which an external operation lever is disposed in the vehicle illustrated in FIG. 3. It is a functional block diagram which shows the control system of the door opening / closing apparatus shown in FIG. It is a principal part conceptual diagram in case the door opening / closing apparatus shown in FIG. 1 exists in an initial state. It is the principal part conceptual diagram which showed the middle of the door opening / closing apparatus shown in FIG. 1 being opened. It is a principal part conceptual diagram when the door opening / closing apparatus shown in FIG. 1 is opened.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Latch unit 11 Latch housing 12 Latch 13 Ratchet 14 Latch shaft 15 Ratchet shaft 16 Ratchet lever 17 Latch lever 18 Linking arm 19 Arm guide 20 Linking pin 21 Linking pin 50 Actuator unit for opening door 51 Actuator housing 52 Output lever 53 Open lever 54 Cam gear 55 Cam gear shaft 56 Reduction gear train 57 Drive motor 58 Peripheral cam 59 Lever shaft 60 Press pin 61 Shaft 62 Head 63 Return spring B Vehicle body D Door S Striker

Claims (2)

When the door closing operation is performed, the latch (12) is engaged to draw the striker (S) into a predetermined engagement position, the latch (12) and the striker (S) are engaged with each other, and the ratchet (13) is further engaged. By restricting the engagement release operation of the latch (12) by engaging, the opening movement of the door (D) with respect to the vehicle body (B) is prevented, while the door opening actuator unit is operated when the door opening operation is performed. A door opening and closing device configured to release the engagement state of the ratchet (13) with respect to the latch (12) by driving (50) ,
When the ratchet (13) moves between the latch (12) and the ratchet (13) so as to release the engagement with the latch (12), a linkage arm that transmits the operation to the latch (12) ( 18)
When the engagement state of the ratchet (13) with respect to the latch (12) is released by driving the door opening actuator unit (50), the operation of the ratchet (13) is transmitted to the latch (12) by the linkage arm (18), A door opening and closing device characterized in that the striker (S) deviates from the meshing position by operating the latch (12) to disengage . Provided with a pressing means (60) that moves forward when the engagement state of the ratchet (13) with the latch (12) is released and moves the door (D) in the opening direction with respect to the vehicle body (B) . The door opening and closing apparatus according to claim 1.

Images