JP2006291666A - Opening and closing structure of door for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an opening and closing structure of a door for a vehicle capable of improving advancing force of a slide door and sealing and holding an opening part of a box-shaped cargo room sufficiently. <P>SOLUTION: This door 30 for the vehicle is composed of an opening and closing door 34 connected with the opening part 32a of the box-shaped cargo room 32 by a hinge and the slide door 36 stored in the opening and closing door 34 so as to come in and out freely. A long hole 34d having required length is provided in an inner plate 34a of the opening and closing door 34 in the direction of width and a base main body 42 is mounted by corresponding to the long hole 34d. A screw shaft 44 is rotatably supported on the base main body 42 and a rotation driving means 46 for rotating the screw shaft 44 is arranged. A nut member 40 having a part fixed to the slide door 36 is screw-fitted into the screw shaft 44. By rotating the screw shaft 44 by the rotation driving means 46, the nut member 40 reciprocates along the long hole 34d to open and close the slide door 36. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an opening / closing structure for a vehicle door, and more particularly to an opening / closing structure for a vehicle door provided at an opening of a box-type luggage compartment such as a covered truck (van) or a cold car.

  A covered vehicle such as a van type truck or a cold truck has a box-type luggage compartment having an opening at the back, and a door is attached to the opening so as to be opened and closed. This door for a vehicle is generally a kannon type in which the hinged left and right doors open on both sides, but there is also a type in which one door is a hinged opening / closing type and the other door is a sliding type. For example, as shown in FIGS. 7 and 8, a vehicle door 10 shown in Patent Document 1 includes an opening / closing door 16 attached to an opening 12 a of a box-type luggage compartment 12 via a hinge 14, and the opening / closing door 16. The slide door 18 is slidably accommodated in the interior 16a.

  A slide drive mechanism 20 that opens and closes the opening 12a by driving the slide door 18 to be slidably moved in and out of the open / close door 16 is provided on the surface (back surface) of the open / close door 16 on the box-type luggage compartment 12 side. It has been. As shown in FIG. 8, the slide drive mechanism 20 includes a drive motor 22 attached to the back surface of the open / close door 16, a sprocket 24 provided on the drive shaft of the drive motor 22, and a back surface of the open / close door 16. The sprocket 24 is provided and a chain 26 that is wound around the sprockets 24 and 24 and extends horizontally. A long hole 16b is horizontally opened on the back surface of the open / close door 16 at a position corresponding to the chain 26 (FIG. 8), and a connecting piece 28 fixed to the slide door 18 is connected to the chain 26 through the long hole 16b. It is connected to. Accordingly, when the drive motor 22 rotates the chain 26, the connecting piece 28 moves along with the chain 26 along the long hole 16 b, and slides the slide door 18 with respect to the opening / closing door 16.

Further, another structure shown in Patent Document 2 has been proposed as an opening / closing mechanism for sliding the slide door 18. That is, FIG. 3 of Patent Document 2 shows a slide comprising an open / close arm 42 slidably connected to a rail 43 fixed at one end to the slide door 3 and a drive motor 41 that swings the arm 42 at a required central angle. An opening / closing mechanism for the door 3 is disclosed. In addition, it is also known to divert a vehicle window regulator such as a pandagraph mechanism or a wire drive mechanism to a slide door drive mechanism.
JP-A-10-147149 JP 2003-82919 A

  Each of the various door opening / closing structures described above has a drawback that the sliding force of the sliding door 18 (propulsive force) is not sufficient, and the opening 12a of the box-type luggage compartment 12 cannot be reliably closed. In particular, a packing is provided on the opening side or door side to ensure the airtightness between the opening 12a and the slide door 18 at the time of closing. However, in the conventional door opening / closing structure, the slide door 18 is used as a packing. There is a problem that the air cannot be pressed sufficiently, and the cold air of the cold car escapes to the outside and lowers the cooling efficiency.

  Therefore, conventionally, in order to compensate for the lack of propulsive force of the door opening / closing structure, a hook is attached to the inside of the slide door 18 and a latch mechanism that engages the hook and pulls the door 18 on the luggage compartment 12 side is attached. A structure is adopted in which the packing is sufficiently pressed and deformed to improve airtightness. However, in this structure, as described above, it is necessary to provide a hook inside the slide door 18 and a latch mechanism on the luggage compartment 12 side, which increases the number of parts, complicates the installation work, and increases the cost. There is. In many cases, an electric drive source such as a solenoid or a motor is used for locking and unlocking by the latch mechanism. In this case, it is necessary to wire the electrical drive source and the control unit with a harness, and this work also has a drawback that requires labor. Furthermore, in order to confirm whether the sliding door 18 is completely closed or opened, it is necessary to provide a sensor for detecting the state of the sliding door 18 at a required location. In this case also, it is necessary to separately wire the sensor and the control unit with a harness. is doing.

  The present invention has been proposed in order to suitably solve these problems inherent in the conventional opening / closing structure of a vehicle door, and the propulsive force of the sliding door is improved so that the box-type luggage compartment is improved. It is an object of the present invention to provide an open / close structure that can sufficiently hold an opening. Another object of the present invention is to provide a structure that reduces mounting and wiring labor by unitizing a mechanism for locking a slide door, a sensor for detecting opening / closing of a door, and the like.

In order to overcome the above-mentioned problems and achieve an intended purpose, a vehicle door opening and closing structure according to claim 1 comprises:
In a vehicle door comprising an opening / closing door hinged to an opening of a box-type luggage compartment and a sliding door housed inside the opening / closing door and slidably entering and exiting,
A base body attachable to the back surface of the open / close door;
A screw shaft that is rotatably supported by the base body and extends in a sliding direction of the sliding door;
Rotation drive means provided on the base body and rotating the screw shaft in the forward and reverse directions;
A long hole that is opened on the back surface of the open / close door and extends along the screw shaft with a required length;
It is characterized in that it is located on the back surface of the open / close door and is screwed into the screw shaft, and a part of the nut is fixed to the slide door through the long hole.

  According to the vehicle door opening and closing structure of the first aspect, the sliding door is opened and closed by rotating the screw shaft and linearly reciprocating the nut member screwed to the screw shaft. That is, the combination of the screw shaft and the nut member greatly improves the propulsive force of the slide door, and the opening can be sufficiently sealed and held. Therefore, even without providing a conventional latch mechanism, it is possible to sufficiently press the packing provided in the opening, and to keep the airtightness in the box-type luggage room high, reducing the installation effort and the number of parts, Manufacturing costs can be reduced.

In the vehicular door opening / closing structure according to claim 2 of the present application, the base body is provided with a lock mechanism for locking and unlocking the slide door with the opening closed.
According to the second aspect of the present invention, since the lock mechanism is provided in the base body and is unitized, the mounting work is easier than in the case where the lock mechanism is provided in another place in the luggage compartment, and a wiring harness is separately provided. There is no need to provide it.

In the vehicle door opening / closing structure according to claim 3 of the present application, the lock mechanism is pivotally supported by the base main body so as to be swingable, and swings in one direction when the slide door is closed to engage with the nut member. The seesaw arm that locks the sliding door and the solenoid that swings the seesaw arm in the reverse direction to disengage from the nut member and unlocks the sliding door.
According to the invention which concerns on Claim 3, a slide door can be reliably locked with the simple structure which consists of a seesaw arm and a solenoid, and it can hold down manufacturing cost low.

In the vehicle door opening and closing structure according to claim 4 of the present application, the base body is provided with emergency release means for electrically releasing the lock of the slide door by the lock mechanism from the inside of the luggage compartment.
According to the fourth aspect of the present invention, even if an operator is closed in the box-type luggage compartment, the emergency release means can be operated to release the lock and escape to the outside.

In the vehicle door opening / closing structure according to claim 5 of the present application, the seesaw arm engaged with the nut member is forcibly swung in the reverse direction to lock the slide door from the inside of the luggage compartment. Manual release means for releasing was provided in the base body.
According to the invention of claim 5, even if the operator is locked in the luggage compartment and the emergency release means according to claim 4 is not activated due to a failure of the electric system, the lock is manually performed. The mechanism can be released and can escape to the outside.

According to a sixth aspect of the present invention, there is provided a door opening / closing structure for a vehicle, wherein the manual release means is screwed to the base body so as to be able to advance and retreat, and a front end of the bolt faces the one end side of the seesaw arm. It consisted of a handwheel handle provided at the rear end.
According to the invention which concerns on Claim 6, it becomes possible to cancel | release a locking mechanism easily only by rotating a handwheel handle.

According to claim 7 of the present application, the door opening and closing structure of the present invention causes the screw shaft to freely rotate, regardless of which direction the nut member is pushed by hand along the screw shaft. The value was set to allow the nut member to move.
According to the seventh aspect of the invention, the screw shaft lead is set to a numerical value that can be moved by pushing the nut member by hand, so that even if the operator closes the box-type luggage compartment, Can be opened.

  The opening / closing structure for a vehicle door according to claim 8 of the present application uses, as the screw shaft, for example, a lead 24 (mm) having a pitch of 3 (mm) with 8 thread grooves as the screw shaft.

The opening / closing structure of the vehicle door according to claim 9 of the present application includes a remote control receiving unit that receives a sliding door opening / closing command from an external transmission terminal, and the rotation driving means based on the opening / closing command via the remote control receiving unit. A control unit including a rotation control unit that performs reverse rotation control is disposed in the base body.
According to the ninth aspect of the present invention, the sliding door can be opened and closed by remote control, so that the efficiency of delivery work can be expected to be improved. Moreover, since the control unit is provided as a unit by being provided in the base body, the installation work is extremely simple.

In the opening / closing structure for a vehicle door according to claim 10 of the present application, a detecting means for detecting whether the sliding door is fully opened and fully closed is provided in the base body, and the rotation control unit is configured to detect the detection signal from the detecting means. The rotation driving means was stopped.
According to the invention which concerns on Claim 10, when a sliding door opens and closes completely, a rotation drive means can be stopped automatically. In addition, since the detection means is also provided in the base body and is unitized, the mounting operation is simpler than the case where the detection means is installed at a separate location, and there is no need to provide a harness.

In the vehicular door opening / closing structure according to claim 11 of the present application, the detection means secondarily detects a position before the fully open position of the slide door, and receives the secondary detection signal to receive the second detection signal. The rotational drive control unit commands the deceleration of the rotational drive means.
According to the eleventh aspect of the invention, since the speed is reduced immediately before the sliding door is completely opened, the impact at the time of full opening is suppressed, and noise and chattering of the sliding door can be prevented.

  According to the opening / closing structure for a vehicle door according to the present invention, the propulsive force of the sliding door can be improved and the opening of the box-type luggage compartment can be sufficiently sealed and held. In addition, since the lock mechanism and the detection means are unitized, it does not take time for installation and it is not necessary to provide a separate harness.

  Next, the opening / closing structure for a vehicle door according to the present invention will be described with reference to the accompanying drawings by way of a preferred embodiment. In addition, although an Example shows the case where the opening / closing structure of the door for vehicles is applied to the van type cold storage vehicle provided for low-temperature transport, if it is a vehicle provided with a box-type luggage compartment, a delivery truck and other various vehicles It is applicable to. In the following description, the direction in which the sliding door is opened is referred to as “opening direction”, and the direction in which the sliding door is closed is referred to as “closing direction”.

  FIG. 1 is a cross-sectional view of a box-type luggage compartment 32 provided with a vehicle door opening / closing structure according to the embodiment, and FIG. 2 is a rear view of the vehicle door 30 as seen from the inside of the box-type luggage compartment 32. . The vehicle door 30 includes an open / close door 34 and a slide door 36 provided in the opening 32 a of the box-type luggage compartment 32. As shown in FIG. 2B, a unitized slide drive mechanism 38 is installed at a substantially central portion of the opening / closing door 34.

[Basic door structure]
The open / close door 34 has a hollow sandwich structure in which a frame (not shown) is sandwiched between an inner plate (rear surface) 34a and an outer plate 34b, and the slide door 36 is detachably stored between the inner plate 34a and the outer plate 34b. A portion 34c is defined. The opening / closing door 34 is connected to one edge of the opening 32a via a hinge 72, and can be opened to the outside of the box-type luggage compartment 32 as shown in FIG. 2A shows a state before the slide drive mechanism 38 is attached, and the inner plate 34a of the open / close door 34 is allowed to reciprocate a nut member 40 (described later) provided on the slide drive mechanism 38. FIG. A long hole 34d is formed in the width direction.

  The sliding door 36 accommodated in the accommodating portion 34c of the opening / closing door 34 is suspended on a rail provided horizontally above the accommodating portion 34c via a roller (none of which is shown), and can slide freely. It has become. Further, a packing 36a is attached to the longitudinal edge portion of the slide door 36 to ensure the airtightness in the box-type luggage compartment 32 when the door is closed.

[Slide drive mechanism]
As shown in FIG. 3, the slide drive mechanism 38 of the slide door 36 rotates a base body 42, a screw shaft 44 rotatably supported by the base body 42, and the screw shaft 44 in forward and reverse directions. The rotation drive means 46 and the nut member 40 screwed onto the screw shaft 44 are configured as a unit. The base body 42 has a box shape with an open front surface, and is detachably attached to the inner plate 34a of the open / close door 34. An opening 42a corresponding to the aforementioned long hole 34d is opened in the width direction on the surface of the base body 42 that contacts the opening / closing door 34, and a part of the nut member 40 is formed through the opening 42a and the long hole 34d. It is fixed to the back surface of the slide door 36. The base main body 42 does not necessarily have to be formed in a box shape as in the embodiment, and may be a rectangular frame with open front and rear surfaces, for example.

  The screw shaft 44 of the required length is rotatably supported by support portions 42b, 42b provided on the base body 42, and one end portion extending from the support portion 42b located on the right side in FIG. The sprocket 50b is connected to the motor 48. As shown in FIG. 1, the nut member 40 screwed to the screw shaft 44 is located on the back side of the opening / closing door 34, and linearly moves in the opening direction and the closing direction by rotating the screw shaft 44 forward and backward. It can be reciprocated. Further, as described above, a part of the nut member 40 is fixed to the slide door 36 through the opening 42a and the long hole 34d of the base main body 42, and the slide door 36 is slid as the nut member 40 moves. That is, the slide drive mechanism 38 reciprocates the nut member 40 by rotating the screw shaft 44 forward and backward, and the slide door 36 is opened and closed by the strong propulsive force obtained thereby. When the packing 36a is closed, the packing 36a of the sliding door 36 comes into contact with the edge of the opening 32a so as to be in a pressure-deformed state. In the following description, the position of the nut member 40 when the slide door 36 is closed is “closed position”, and the position of the nut member 40 when the slide door 36 is open is “open position”. (Refer to FIG. 3).

[About screw shaft]
The screw shaft 44 is preferably a multi-threaded screw having 8 thread grooves as an example, and the pitch (distance between adjacent grooves) is 3 [mm]. Therefore, the lead (distance) L in which the nut member 40 advances in the axial direction by rotating the screw shaft 44 once is 24 [mm] from L = N × P (N: number of threads, P: pitch). In this way, when the screw shaft 44 having a large lead is used, even when it becomes necessary to manually open the slide door 36 due to a failure in the electrical system or the like, the nut member 40 fixed to the slide door 36 can be used. The screw shaft 44 freely rotates (swings) and allows the sliding door 36 to be opened without any trouble. If the screw shaft 44 having a large lead is used, the door 36 is slightly pushed back by the elastic force of the packing 36a that is pressed and deformed when the slide door 36 is completely closed, and the airtightness may be lowered. The slide door 36 is preferably locked by the lock mechanism 52. A ball screw may be used instead of the screw shaft 44.

[Rotation drive means]
The rotation driving means 46 disposed on the side of the base main body 42 includes a motor 48 and a power transmission mechanism 50, and thereby rotates the screw shaft 44 in the forward and reverse directions. The motor 48 is preferably a low-speed / high-torque type. In the embodiment, a motor having a rotational speed of 1200 [rpm] was used. By suppressing the rotational speed of the motor 48 to a low level, it is possible to reduce noise during motor operation. Further, by combining the low-speed motor 48 with a belt mechanism described later, it is not necessary to provide a gear-type reduction mechanism, and the slide drive mechanism 38 can be made lightweight and compact. Furthermore, since no gear type reduction mechanism is used, there is no problem that the lubricating grease or the like is hardened due to the low temperature of the cold insulation chamber.

  The power transmission mechanism 50 includes a small-diameter sprocket 50a connected to the rotating shaft of the motor 48, a large-diameter sprocket 50b connected to the end of the screw shaft 44, and a timing belt interposed between the sprockets 50a and 50b. 50c. The rotation ratio is set to 2.7, for example, due to the difference in diameter between the sprockets 50a and 50b. That is, in the embodiment, the rotational speed of the motor 48 is 1200 [rpm] (= 20 [rps]), the sprocket 50b has a rotation ratio of 2.7, and the lead of the screw shaft 44 is 24 [mm]. The moving speed of 36 is 20 / 2.7 * 24 = 178 [mm / s]. However, the numerical values such as the number of rotations shown above can be arbitrarily changed according to the embodiment.

[About locking mechanism]
As shown in FIG. 3, the base main body 42 is provided with a lock mechanism 52 that locks and unlocks the slide door 36. As described above, since the screw shaft 44 having a large lead is used in the embodiment, after the sliding door 36 is completely closed, the sliding door 36 may be slightly pushed back by the elastic force of the packing 36a. is there. In view of this, the lock mechanism 52 locks the slide door 36 after being completely closed at that position to hold the opening 32a in a sealed state.

  The lock mechanism 52 includes a seesaw arm 54 that is pivotally supported by the base main body 42 and locks the slide door 36, and a solenoid 56 that unlocks the seesaw arm 54. The seesaw arm 54 is pivotally supported by a support shaft 54b at a position slightly displaced from the center thereof, and is swingable with respect to the base body 42. An end portion 54 a on the closed position side of the seesaw arm 54 is connected to a plunger 56 a of a solenoid 56 via a pin 80. As shown in FIG. 5A, the seesaw arm 54 is always in a state where the end 54a is lowered.

  When the nut member 40 moves in the closing direction, the seesaw arm 54 pushes up the end 54a in the clockwise direction (FIG. 5B). When the nut member 40 passes below the end 54a of the seesaw arm 54 and reaches the closed position, the seesaw arm 54 swings counterclockwise due to gravity and engages with the nut member 40 to lock. Is completed (FIG. 5C).

  In releasing the lock, when the solenoid 56 is energized, the plunger 56a is pulled up, and the seesaw arm 54 is swung clockwise to disengage the nut member 40 from engagement. However, when the slide door 36 is in a completely closed state, the nut member 40 and the seesaw arm 54 are firmly engaged by the repulsive force of the packing 36a that has been pressed and deformed. It is often difficult to cancel. Therefore, prior to releasing the lock, the motor 48 is rotated forward to further move the slide door 36 in the closing direction, and the packing 36a is further pressed and deformed, thereby acting between the nut member 40 and the seesaw arm 54. Relieve the strong engaging force that is. If the solenoid 56 is energized during this time, the lock can be easily released. A spring 56c is interposed in the plunger 56a, and the plunger 56a is always urged downward by the elastic force of the spring 56c. Accordingly, chattering of the seesaw arm 54 while traveling on a rough road is prevented.

[Emergency cancellation means]
An emergency release button (emergency release means) 58 for electrically releasing the lock of the lock mechanism 52 is provided on the upper portion of the base body 42. That is, when the emergency release button 58 is pressed, the solenoid 56 is energized, the plunger 56a is pulled up, and the engagement between the seesaw arm 54 and the nut member 40 is released. Therefore, even when the worker is closed in the box-type luggage compartment 32, the lock can be released from the inside of the box-type luggage compartment 32 and escape to the outside. When the emergency release button 58 is operated to release the lock, the rotation driving means 46 is operated and the slide door 36 is automatically opened.

[Manual release means]
The base body 42 is provided with manual release means 60, which forcibly unlocks the slide door 36 by swinging the seesaw arm 54 engaged with the nut member 40 in the reverse direction. is there. That is, even when the worker is closed in the box-type luggage compartment 32 and the emergency release button 58 is not activated due to a failure of the electrical system, the lock is forcibly released by the manual release means 60 and the external Can escape to. The manual release means 60 is screwed to the base body 42 so as to be able to advance and retreat, and a bolt 60b having a tip thereof facing an end 54c on the open position side of the seesaw arm 54, and a handwheel handle 60a provided on the bolt 60b. It consists of. Then, by rotating the handwheel handle 60a, the bolt 60b is lowered to push down the end portion 54c, and the seesaw arm 54 is swung in the reverse direction. As the manual release means 60, other configurations can be appropriately employed as long as the seesaw arm 54 can be forcibly swung manually to release the lock mechanism 52. After releasing the lock by the manual release means 60, the operator opens the slide door 36 by hand and escapes to the outside.

[About control unit]
At a substantially central portion of the base body 42, a remote control receiving unit 64 that receives an opening / closing command of the sliding door 36 from an external transmission terminal (not shown) and a rotation control unit 70 that performs forward / reverse rotation control of the rotation driving means 46. A control unit 62 is provided as a unit. The remote control receiving unit 64 receives an open / close command from an external transmission terminal independent of the slide drive mechanism 38 and sends the open / close command to the rotation control unit 70. The rotation control unit 70 is configured to rotate the rotation driving unit 46 forward and backward based on an opening / closing command from the remote control receiving unit 64. The slide door 36 can be opened and closed by remote control. The remote operation by the external transmission terminal is not limited to the opening / closing operation of the slide door 36. For example, the slide door 36 may be emergency-stopped. Further, the control unit 62 according to the embodiment not only controls the rotation driving means 46 but also performs ON / OFF control of the solenoid 56 of the lock mechanism 52. Accordingly, when an opening command for the slide door 36 is received or when the emergency release button 58 is pressed, the control unit 62 operates the solenoid 56 to release the lock of the slide door 36.

  Below the base body 42, detection means 66 for detecting whether the slide door 36 is fully opened or completely closed is disposed. This detection means 66 is comprised from the 1st detection sensor 66a provided in the closed position under the base main body 42, and the 2nd sensor 66b similarly provided in the open position. As shown in FIG. 5C, the first sensor detects the nut member 40 that has reached the closed position, and the rotation control unit 70 stops the rotation driving means 46 by this detection signal. . Similarly, the second sensor 66b detects that the nut member 40 has reached the open position, and causes the rotation control unit 70 to stop the rotation driving means 46.

  Further, the detection means 66 includes a third sensor 66c so as to secondaryly detect a position before the fully open position (open position) of the slide door 36. The third sensor 66c is provided on the base body 42 so as to be adjacent to the second sensor 66b, and detects the nut member 40 immediately before reaching the open position. Then, according to the detection signal of the third sensor 66c, the rotation control unit 70 gradually decelerates the rotation driving means 46, and the slide door 36 stops slowly when fully opened.

(Operation of Example)
Next, the operation of the vehicle door opening and closing structure according to the embodiment will be described. It is assumed that the initial slide door 36 is in a completely closed state. When the slide door 36 is opened, an open command is transmitted by operating the external transmission terminal. When the remote control receiving unit 64 receives this opening command, first, the control unit 62 operates the rotation driving means 46 to slightly move the slide door 36 in the closing direction, so that the seesaw arm 54 and the nut member 40 are moved. Relieve engagement. During this time, the solenoid 56 is operated to pull up the plunger 56a to release the lock of the slide door 36.

  Next, the opening / closing command is sent to the rotation control unit 70, and the control unit 70 rotates the rotation driving means 46 in the reverse direction. As a result, the screw shaft 44 is rotated in the opposite direction, the nut member 40 moves in the opening direction, and the opening of the slide door 36 begins (FIG. 4A). When the nut member 40 passes over the third sensor 66c just before the sliding door 36 is fully opened, the sensor 66c detects this. The detection signal of the third sensor 66c is sent to the rotation control unit 70, and the control unit 70 gradually decelerates the rotation driving means 46 and lowers the moving speed of the slide door 36.

  Further, as shown in FIG. 4B, when the slide door 36 is fully opened and the nut member 40 reaches the open position, the second sensor 66b detects this, and the rotation control unit 70 rotates. The driving means 46 is stopped. At this time, since the slide door 36 is decelerated, the slide door 36 is quietly stopped and no noise or chatter occurs. Further, by gradually decelerating and stopping the slide door 36, the load applied to the timing belt 50c can be reduced, and wear of the belt 50c can be prevented.

  Then, as shown in FIG. 4C, the operator manually opens the opening / closing door 34 to completely open the opening 32a, and loads the cargo. As shown in FIG. 4B, the loading operation can be performed with only the sliding door 36 opened.

  When the loading of the luggage is completed and the vehicle door 30 is closed, first, the open / close door 34 is manually closed (FIG. 4B), and then the slide door 36 is closed from the external transmission terminal. Send the creation command. This closing command is sent to the rotation control unit 70 via the remote control receiving unit 64, and the rotation driving means 46 is rotated in the forward direction. Thereby, the nut member 40 moves in the closing direction, and the sliding of the slide door 36 starts.

  When the nut member 40 moves in the closing direction and contacts the seesaw arm 54 as shown in FIG. 5B, the nut member 40 moves while pushing up the end 54a of the seesaw arm 54 in the clockwise direction. Further, when the nut member 40 passes through the seesaw arm 54 and reaches the closed position, the first sensor 66a detects this, and the rotation control unit 70 stops the rotation driving means 46. At the same time, the end 54a of the seesaw arm 54 is lowered counterclockwise due to gravity, and engages with the nut member 40 to complete the locking (FIG. 5C). That is, the opening 32a is tightly sealed until the packing 36a of the slide door 36 is pressed and deformed by the strong propulsive force of the nut member 40. Furthermore, since the slide door 36 is immediately locked in this state, the sealed state can be maintained without the door 36 moving due to the repulsive force of the packing 36a.

  If an operator who does not have an external transmission terminal closes the slide door 36 for some reason and closes it into the box-type luggage compartment 32, the inside of the luggage compartment 32 is low in temperature. Very dangerous. In such a case, the slide door 36 can be unlocked by pressing the emergency release button 58. That is, when the operator presses the emergency release button 58, the control unit 62 operates the solenoid 56 to pull up the plunger 56a and release the engagement between the seesaw arm 54 and the nut member 40. Thereafter, the control unit 62 reversely rotates the rotation driving means 46 to automatically open the slide door 36, and the operator can escape to the outside.

  Further, in the above case, when the emergency release button 58 cannot be used due to a failure in the electrical system or the like, the operator can forcibly release the lock mechanism 52 by the manual release means 60. That is, the operator manually turns the handle 60a to lower the manual release means 60. Then, the bolt 60b pushes down the end portion 54c of the seesaw arm 54 in the clockwise direction, and the engagement between the seesaw arm 54 and the nut member 40 is forcibly released. After releasing the lock, the operator can manually open the slide door 36 and escape to the outside. At this time, since the screw shaft 44 having a large lead is used, the slide door 36 can be opened without any trouble.

  As described above, according to the opening / closing structure of the vehicle door according to the embodiment, the slide door 36 is opened and closed by the reciprocating movement of the nut member 40 screwed to the screw shaft 44. The propulsive force of 36 is greatly improved, and the opening 32a can be sufficiently sealed. Therefore, internal cold air does not leak and energy efficiency is improved. Further, since the lock mechanism 52, the control unit 62, the detection means 66, and the like are unitized in the base body 42, the mounting work is facilitated and the wiring with the external power source can be extremely simplified. Furthermore, in the embodiment, since the control unit 62 includes the remote control receiving unit 64 and the rotation control unit 70, the sliding door 36 can be opened and closed by remote operation, and the efficiency of delivery work is improved.

(Example changes)
In the embodiment, as shown in FIG. 1, a case is shown in which the opening / closing structure of the present invention is applied to a vehicle door 30 including a pair of an opening / closing door 34 and a sliding door 36. However, as shown in FIG. 6, the present invention is also applied to a vehicular door 68 in which two combinations of an opening / closing door 34 and a sliding door 36 are provided in the opening 32 a of the box-type luggage compartment 32, and a double door opening type is provided. It is possible to do. However, in this case, it is necessary to provide two slide drive mechanisms 38 so as to open and close the respective slide doors 36 and 36.

It is a cross-sectional view which shows the opening / closing structure of the vehicle door which concerns on an Example, Comprising: It is the II sectional view taken on the line of FIG. It is the reverse view which looked at the door for vehicles concerning an example from the inside of a box type luggage compartment, (a) shows the state before attaching a slide drive mechanism, and (b) shows the state where a slide drive mechanism was attached. Is shown. It is a front view which shows the slide drive mechanism which concerns on an Example. It is a cross-sectional view showing the opening and closing structure of the vehicle door according to the embodiment, (a) shows a state in the middle of the opening of the sliding door, (b) shows a state of the sliding door fully opened, c) shows a state in which the open / close door is opened. It is the enlarged view which showed a mode that a nut member moved in a closing direction in an Example, (a) shows the state before a nut member contact | abuts a seesaw arm, (b) shows a nut member to a seesaw arm. FIG. 5C shows a state where the nut member reaches the closed position and engages with the seesaw arm. It is a cross-sectional view which shows the opening / closing structure of the vehicle door which concerns on the example of a change. It is a schematic perspective view of the box-type luggage compartment provided with the conventional opening / closing structure. It is explanatory sectional drawing which shows the conventional opening-closing structure.

Explanation of symbols

DESCRIPTION OF SYMBOLS 30 Vehicle door, 32 Box-type luggage compartment, 32a Opening 34 Opening / closing door 34d Long hole, 36 Sliding door, 40 Nut member, 42 Base main body 44 Screw shaft, 46 Rotation drive means, 52 Lock mechanism, 54 Seesaw arm 56 Solenoid , 58 Emergency release button (emergency release means), 60 Manual release means 62 Control unit, 64 Remote control receiver, 68 Vehicle door (change example)
70 Rotation control unit

Claims (11)

A vehicle comprising an opening / closing door (34) hinged to the opening (32a) of the box-type luggage compartment (32), and a sliding door (36) housed inside the opening / closing door (34) and slidable in and out In the door (30)
A base body (42) attachable to the back surface (34a) of the open / close door (34);
A screw shaft (44) rotatably supported by the base body (42) and extending in the sliding direction of the sliding door (36);
Rotation drive means (46) provided on the base body (42), for rotating the screw shaft (44) in the forward and reverse directions,
A long hole (34d) opened on the back surface (34a) of the open / close door (34) and extending along the screw shaft (44) with a required length;
A nut that is positioned on the back surface (34a) of the open / close door (34), is screwed into the screw shaft (44), and a part thereof is fixed to the slide door (36) through the elongated hole (34d). A door opening and closing structure for a vehicle characterized by comprising a member (40).   The vehicle door opening / closing structure according to claim 1, wherein a lock mechanism (52) for locking and unlocking the slide door (36) closing the opening (32a) is provided in the base body (42).   The lock mechanism (52) is pivotally supported by the base body (42) so as to be swingable, and swings in one direction when the slide door (36) is closed to engage the nut member (40). The seesaw arm (54) for locking the slide door (36) and the seesaw arm (54) are swung in the opposite direction to be detached from the nut member (40) to unlock the slide door (36). The door structure for opening and closing a vehicle door according to claim 2, comprising a solenoid (56) for performing the operation.   The base body (42) is provided with emergency release means (58) for electrically releasing the lock of the slide door (36) by the lock mechanism (52) from the inside of the box-type luggage compartment (32). 2. A door opening / closing structure for a vehicle according to 2 or 3.   The seesaw arm (54) engaged with the nut member (40) is forcibly swung in the reverse direction, and the slide door (36) is unlocked from the inside of the luggage compartment (32) manually. The door opening and closing structure for a vehicle door according to claim 3 or 4, wherein a release means (60) is provided in the base body (42).   The manual release means (60) is screwed to the base body (42) so as to be able to advance and retreat, and a bolt (60b) having its tip facing one end of the seesaw arm (54), and the bolt (60b) 6. The door structure for opening and closing a vehicle door according to claim 5, comprising a handwheel handle (60a) provided at a rear end of the vehicle door.   Even if the lead of the screw shaft (44) is manually pushed in any direction along the screw shaft (44), the lead of the screw shaft (44) causes the screw shaft (44) to loosen and the nut member ( The opening / closing structure for a vehicle door according to any one of claims 1 to 6, which is set to a numerical value that permits movement of 40).   The door structure for opening and closing a vehicle door according to claim 7, wherein a lead 24 (mm) having a pitch of 3 (mm) is adopted as the screw shaft (44), for example, with eight thread grooves.   A remote control receiver (64) that receives an open / close command for the slide door (36) from an external transmission terminal, and forward / reverse rotation control of the rotation drive means (46) based on the open / close command via the remote control receiver (64) The door structure for opening and closing a vehicle door according to any one of claims 1 to 8, wherein a control unit (62) comprising a rotation control section (70) for performing the operation is disposed on the base body (42).   The base body (42) is provided with detection means (66) for detecting the complete opening and complete closing of the sliding door (36), and the rotation control unit (70) is detected by a detection signal from the detection means (66). The door opening / closing structure for a vehicle according to claim 9, wherein the rotation driving means (46) is stopped. The detection means (66) secondarily detects a position before the fully open position of the slide door (36), and the rotational drive control unit (70) rotates in response to the secondary detection signal. The door structure for opening and closing a vehicle door according to claim 10, wherein the drive means (46) is commanded to decelerate.

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