JPH04353070A - Door closing device for vehicle sliding door - Google Patents

Abstract

PURPOSE:To give a stable and sufficiently large door close holding force without requiring any external supplied energy and dispense with an auxiliary power source for opening a door by holding door closed state by the magnetic force of a cylindrical permanent magnet, and rotating the position of the magnetic pole of the cylindrical permanent magnet at the time of opening the door to extinguish the magnetic force. CONSTITUTION:A door closed state holding means 8 for a sliding door 1 has a cylindrical permanent magnet 8a magnetized to N, S poles in the radial direction rotatably installed into a fixed magnetic pole 8b opposed thereto with a non-magnetic part between and a movable magnet 8e attracted to the outside surface of the fixed magnetic pole 8b in such a manner as to be connectable and disconnectable and installed to the sliding door 1. At the time of closing the door, the magnetic pole of the cylindrical permanent magnet 8a is situated in the position opposite to the fixed magnetic pole piece, and a magnetic flux is passed to the movable magnetic pole 8e to hold the movable magnetic pole 8e by the magnetic force. At the time of opening the door, the cylindrical permanent magnet 8a is rotated at 90 deg. to situate the magnetic pole of the cylindrical permanent magnet 8a in the position opposite to the non- magnetic part, and the magnetic flux passed to the movable magnet 8e is extinguished to release the holding.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention relates to a sliding door closing device for a vehicle equipped with a linear motor that automatically opens and closes a sliding door provided at a passenger entrance of a vehicle such as a train or a train, and particularly relates to a sliding door closing device for a vehicle equipped with a linear motor that automatically opens and closes a sliding door provided at a passenger entrance of a vehicle such as a train or train. The present invention relates to a door closing device that uses permanent magnets to hold a sliding door in a closed position, and which is improved so that the sliding door can be opened manually if necessary.

0002

[Prior Art] A door closing device for a vehicle sliding door that opens and closes the vehicle sliding door using a linear motor and holds the sliding door in the closed position using a permanent magnet when the door is closed has already been disclosed in Japanese Patent Application No. 2-51958. proposed by the same applicant. FIG. 4 is a block diagram of the conventional vehicle sliding door closing device in the sliding door closed state.
(a) is a front view, and (b) is a Q arrow view in (a). In FIG. 4, 1A and 1B are a pair of left and right double doors installed at the passenger entrance of the vehicle. 4A and 4B are linear motors that open and close the double doors 1A and 1B, respectively, and are composed of a stator 4a fixed to the vehicle side wall material 5 and a movable element 4b fixed to the door. 4
B is energized and the movable elements 4b move in opposite directions, thereby opening and closing the double doors 1A and 1B. 14A and 14B are door closed state holding means for each of the double doors 1A and 1B, and the door closed state holding means 14A for one door 1A includes a permanent magnet 15A and an electromagnet 16A, and the permanent magnet 15A is attached to the holder 15a. It is fixed to one door 1A via. The electromagnet 16A includes an iron core 17 and an electromagnetic coil 18, and is fixed to the vehicle side wall material 5 via a holder 16a. Door closed state holding means 1 for the other door 1B
4B includes a permanent magnet 15B and an electromagnet 16B, and the permanent magnet 15B is fixed to the other door 1B via a holder 15a. The electromagnet 16B includes an iron core 17 and an electromagnetic coil 18, and is fixed to the vehicle side wall material 5 via a holder 16a.

In the above configuration, the permanent magnet 15 and the electromagnet 16 approach each other as the double doors 1A and 1B close, and when the doors are closed, they come into contact with each other, and the magnetism generated by the permanent magnet 15 Due to the attractive force, the permanent magnet 15 and the iron core 17 are attracted to each other, and this causes the double door 1A to open.
, 1B are kept closed. In addition, double door 1A,
When opening the door of 1B, first, the electromagnetic coil 18 is energized to generate a magnetic flux having the same polarity as the magnetic flux produced by the permanent magnet 15 in the iron core 17. This generates a repulsive force that acts on the electromagnet 16 in a direction that moves the permanent magnet 15 away. Subsequently, the double doors 1A and 1B are opened by energizing the linear motor 4 so that the movable elements 4b mutually move in the door opening direction.

0004

[Problem to be Solved by the Invention] In the above-mentioned prior art vehicle sliding door closing device, the sliding door is maintained in the closed state by the magnetic attraction force of the permanent magnet, and no external supply energy is required. However, in order to open the door, it is necessary to energize the electromagnetic coil in order to obtain a repulsive force that moves the permanent magnet away. However, when a power outage occurs in the vehicle, the electromagnetic coil cannot be energized, so there is a problem in that the door cannot be opened manually. Furthermore, since a large current is required to energize the electromagnetic coil each time the door is opened, there is a problem in that an auxiliary power source with a large current capacity must be installed as an auxiliary power source for the vehicle. The object of the present invention is to have a stable and sufficiently large door closing force without requiring any external supply energy when the door is closed, and
To provide a door closing device for a sliding door for a vehicle that does not require any auxiliary power source when opening the door.

[0005]

[Means for Solving the Problem] In the present invention, the above object is achieved by

[0006] 1) The upper part of the rail body is suspended by a door roller from a support rail body extending horizontally along the side wall surface of the vehicle above the vehicle entrance, and is arranged so as to be able to open and close the vehicle entrance. In a door closing device for a vehicle sliding door in which a sliding door is driven to open and close by a linear motor, a first engaging body fixed to a movable element of the linear motor and a second engaging body attached to the sliding door are connected to each other to control movement of the sliding door. an engaging means that engages with a gap in the direction; a movable element holding means that holds the movable element at the end position of the door closing; and a door closed state that holds the sliding door in the closed position by magnetic force of a permanent magnet. and a manual door opening means for manually releasing the holding force of the door closed state holding means when manually opening the door;

[
2) In the means described in item 1 above, the door closed state holding means has a cylindrical shape and is magnetized so that its magnetic poles are composed of an N pole and an S pole, and the respective magnetic poles are formed facing each other in the radial direction. The permanent magnet has a circular arc portion facing the outer diameter of the permanent magnet on the inside, one side surface has a common plane, a non-magnetic portion is provided between each side, and the above-mentioned A pair of fixed magnetic pole pieces on which a cylindrical permanent magnet is rotatably mounted on the inner periphery; one surface is removably attracted to a common plane of the fixed magnetic pole piece, and the other surface is attached to the sliding door. A fixed movable magnetic pole piece, a gear coaxially attached to the cylindrical permanent magnet, and a rack that is meshed with the gear and rotates the cylindrical permanent magnet in accordance with the moving position of the movable element of the linear motor. When the sliding door is in a closed state, the sliding door is held in the closed state by a magnetic force generated by the magnetic flux from the cylindrical permanent magnet, and when the sliding door is opened, the position of the magnetic pole of the cylindrical permanent magnet is adjusted. The fixed magnetic pole piece is rotated to eliminate the magnetic flux flowing through the fixed magnetic pole piece from the cylindrical permanent magnet, thereby eliminating the magnetic force from the permanent magnet;

3) In the means described in item 1 or 2 above, the manual door opening means is supported by a side wall material in the vicinity of the sliding door of the vehicle, and is always kept in the closed state by a return spring. has a manual lever held in the corresponding position,
When manually opening the door, this manual lever is pushed against the spring force of the return spring, and the rack of the door closed state holding means is moved in the direction of opening the door and is mounted coaxially with the cylindrical permanent magnet. 4) In the means described in items 1 to 3 above, the cylindrical permanent magnet is rotated by rotating the gear to eliminate the magnetic force that holds the sliding door in the closed state. This means is achieved by providing a gap between the first engaging body and the second engaging body which is necessary for rotation of the permanent magnet to release the holding force of the door closed state holding means.

[0009]

[Function] In the present invention, the movable element of the linear motor is not directly attached to the sliding door as described above, but the sliding door is opened and closed with a gap in the opening/closing direction. Further, the door closed state holding means has a cylindrical shape and is opposite to N.
It is equipped with a permanent magnet that is magnetized in the radial direction so that a pole and an S pole are formed, and has an arcuate part on the inside that faces the outer diameter of this permanent magnet, and has one outer surface that has a common plane. Moreover, the cylindrical permanent magnet is rotatably mounted on the inner periphery of a pair of fixed magnetic pole pieces each having a non-magnetic part between them, and one surface is fixed to the sliding door on the common plane. A movable magnetic pole piece is detachably attracted to the other surface, and a gear is coaxially attached to the cylindrical permanent magnet, and the gear is engaged with a rack connected to an operating end of the opening/closing means.
The cylindrical permanent magnet is rotated according to the moving position of the movable element of the linear motor. Furthermore, the manual door opening means includes a manual lever supported on the side of the vehicle near where the sliding door is installed, and a return spring that normally holds the manual lever in a position corresponding to the door closed state. When manually opening the door, push this lever against the spring force of the return spring to move the rack of the door closed state holding means and rotate the gear to rotate the cylindrical permanent magnet. The magnetic force that keeps the door closed disappears. Therefore, when the door is closed, the magnetic pole of the cylindrical permanent magnet is in a position opposite to the fixed magnetic pole piece. → A magnetic flux is generated that circulates with the cylindrical permanent magnet, and the magnetic force generated by this magnetic flux allows the sliding door to be stably held in the closed state with a large holding force without the need for any externally supplied energy. In addition, when the door is opened, the rack is moved by the movement of the mover of the linear motor, and the cylindrical permanent magnet is rotated to a position where its magnetic pole faces the place where the non-magnetic part is formed in the middle of the fixed magnetic pole piece. Since the magnetic flux surrounding the movable magnetic pole piece from the cylindrical permanent magnet disappears, the magnetic force of the means for keeping the door closed state disappears, and the door can be opened without supplying current from the auxiliary power source. . Moreover, when it is necessary to manually open the door, the lever is pushed against the spring force of the return spring, and the rack, which is the means for keeping the door closed, is moved in the direction of opening the door together with the mover of the linear motor. However, since the movable element of the linear motor is engaged with the sliding door with a gap in the opening/closing direction, the rack is initially moved within this gap while keeping the sliding door in the closed state. As the rack moves, the gear meshed with the rack is rotated, and when the gear rotates, a cylindrical permanent magnet attached coaxially with the gear rotates, and in the same way as described above, the door is closed. The magnetic force that holds it disappears. As a result, the sliding door can be easily opened manually with a small amount of force.

0010

Embodiments Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a detailed front view of a portion P in FIG. 2, which will be described later, of a sliding door closing device for a vehicle according to an embodiment of the present invention.
FIG. 2 is a front view including the sliding door of a door closing device for a vehicle sliding door according to an embodiment of the present invention, and FIG. 3 is a sectional view taken along line A-A in FIG.
(a) shows the door in the process of being closed, (b) shows the door in the closed state, and (c) shows the state in which manual opening has started. In Figures 1 to 3, Figure 4
The same parts as in the conventional example are given the same reference numerals, and their explanation will be omitted. 1 to 3, a vehicle 1 has its upper part suspended and supported by a plurality of door rollers 3 on a support rail body 2 that extends horizontally along the side wall surface of the vehicle above the passenger entrance of the vehicle. This sliding door is arranged so as to automatically and freely close the entrance/exit, and consists of a left side sliding door 1A and a right side sliding door 1B. The mover 4b of the linear motor is
It is supported by a support device (not shown) so as to be movable along the opening/closing direction of the sliding door 1. 6 is the sliding door 1 for the left side
It is provided for each movable element of the sliding door A and the right side sliding door 1B, and is a movable element holding means that holds the movable element 4b consisting of a fixed part 6a and a movable part 6b in the door closed position, and the fixed part 6a is a linear Stator 4a of motor 4 or side wall material 5 of vehicle
The movable parts 6b are respectively attached to the ends of the movable element 4b of the linear motor 4, and when the movable element 4b reaches the door-closed position, the fixed part 6a and the movable part 6b are coupled to move the movable element 4b. The door is held in the closed position, and when the door is opened, the mover 4b can start moving with a small force. Although a mechanism called a latch is shown as an example in the figure, it is not limited to this, and for example, a permanent magnet can be used. may be used. 7 is fixed to the mover 4b of the linear motor 4, and the driving force of the linear motor 4 causes each left side sliding door 1A to
A drive plate 7a as a first engaging body for opening and closing the right side sliding door 1B is fixed to each of the left side sliding door 1A and the right side sliding door 1B, and is provided with a gap x in the opening/closing direction from the drive plate 7a. It is an engagement means for engaging the linear motor 4 and the sliding door 1, which is composed of a passive plate 7b as a second engagement body configured to open and close the sliding doors 1A and 1B.

8A and 8B are door closed state holding means for holding each of the left side sliding door 1A and the right side sliding door 1B in the door closed position, and the door closed state holding means 8A for the left side sliding door 1A is representative. Explain to the subject. This consists of a cylindrical permanent magnet 8a that is magnetized in the radial direction so that north and south poles are formed facing each other, and a pair of magnetic pole pieces 8c and 8d that are arranged to surround this permanent magnet 8a. The pair of magnetic pole pieces 8c and 8d have an arcuate portion on the inside facing the outer diameter of the permanent magnet 8a with a narrow gap therebetween, and a non-magnetic portion 8j is sandwiched between each of them, Furthermore, the fixed magnetic pole 8b has outer surfaces 8c' and 8d' both forming a common plane, and one surface is removably attracted to the common plane, and the sliding door 1A for the left side and the sliding door 1A for the right side each have a fixed magnetic pole 8b that forms a common plane. a movable magnetic pole 8e whose other surface is fixed to the sliding door 1B;
A gear 8f is fixed coaxially to the cylindrical permanent magnet 8a by, for example, adhesive, and rotatably attaches the cylindrical permanent magnet 8a to the fixed magnetic pole 8b. Therefore, the cylindrical permanent magnet 8a is engaged with the rack 8g so as to be rotated according to the moving position of the movable element 4b, and the rack 8g is attached, so that the rack 8g is at least the above-mentioned gap x in the opening/closing direction of the left sliding door 1A. It is provided with an inverted U-shaped frame 8h that is movably supported by a support device (not shown) so that it can be moved by. Here, only the rack 8g is different from the door closed state holding means 8A for the left side sliding door 1A and the door closed state holding means 8B for the right side sliding door 1B. In other words, left side sliding door 1A
The rack 8g of the door closed state holding means 8A for the left side sliding door 1B also meshes with the gear 8f of the door closed state holding means 8B for the right side sliding door 1B, and the rack 8g of the door closed state holding means 8A for the left side sliding door 1A.
At g, the cylindrical permanent magnets 8a of the door closed state holding means 8A for the left side sliding door 1A and the door closed state holding means 8B for the right side sliding door 1B are rotated at the same time. Further, the door closed state holding means 8A for the left side sliding door 1A and the door closed state holding means 8B for the right side sliding door 1B are connected to a fixed magnetic pole piece 8 using a common support fitting 8i.
It is supported by the lower surface of b and is attached to the side wall material 5 of the vehicle. Furthermore, the gear 8f is configured to rotate 90 degrees when the rack 8g moves by a distance x. The non-magnetic portion 8j is preferably formed of non-magnetic metal such as stainless steel or brass, various synthetic resins, or a void. Furthermore, 9 is a permanent magnet, which is fixed to the frame 8h with a metal fitting 9a, and the movable member 4b.
moves a distance x toward you from the door closed position, the magnetic piece 10 fixed to the movable element 4b with a metal fitting 10a
are attracted and combined using magnetic force. Reference numeral 11 denotes a fixed part 11a installed on the side wall material 5 side and one sliding door, for example, the left side sliding door 1.
The moving part 11b attached to the door A is paired with a door closing detection switch using, for example, a reed switch, an optical switch, etc. When the door closing detection switch 11 detects that the sliding door 1 is closed, the linear motor 4 is activated. A signal is sent to cut off the power, and if the sliding door 1 is even slightly open, the linear motor 4 is activated.
sends a signal to turn on the power.

[0012] Reference numeral 8k denotes a contact plate protruding from the side surface of the frame 8h. Reference numeral 12 denotes a seat plate 5 protruding from the side wall material 5 near the passenger entrance of the vehicle so as to be movable in the opening/closing direction of the sliding door 1.
This is a manual handle supported by the seat plates 5a and 5b, and the tip end 12a of the manual handle 12 is installed so as to be able to abut against the abutting plate 8k, and the seat plate 5a,
A seat plate 12b is fixed at an intermediate position of the manual handle 12, and a compression spring 1 for returning the manual handle 12 is installed between this seat plate 12b and the seat plate 5a closer to the tip 12a.
2c is attached, the sliding door 1 is in the door closed position, and the door closed state holding means 8 is holding the sliding door 1 in the closed state.
The return compression spring 12c remains in contact with the return compression spring 12c.
The structure allows a manual door opening operation in which the door is moved by the distance x in the door opening direction against the spring force. Reference numeral 13 denotes a detection switch such as a microswitch for detecting the execution of the manual door opening operation of the manual handle 12. Its fixed side 13a is attached to the side wall material 5 near the passenger entrance of the vehicle, and its movable side is attached to the side wall material 5 near the passenger entrance of the vehicle. It is attached to the manual handle 12, and when a manual door opening operation of the manual handle 12 is performed, a signal is sent to cut off the power to the linear motor 4. 25
is a stopper that prevents the left side sliding door 1A and the right side sliding door 1B from moving more than a predetermined amount, and is attached to the side wall material 5 near the passenger entrance of the vehicle.

With this configuration, when closing the sliding door 1, when the linear motor 4 that drives the left sliding door 1A and the right sliding door 1B is energized, each movable element 4b moves in the door closing direction. The driving plate 7a attached to the movable element 4b presses against the passive plate 7b fixed to each left sliding door 1A or right sliding door 1B, and each sliding door 1A, 1B is brought to the closed position. move it. For example, when the sliding door 1A comes to the closed position, this is detected by the door closed detection switch 11, and the power to the linear motor 4 is cut off. In the door closed position, the movable element 4b is held by the movable element holding means 6, and the movable element 4b is maintained in the door closed position even if there is vibration due to the running of the vehicle when the linear motor 4 is not energized. On the other hand, the operation of the door closed state holding means 8 is such that when one of the sliding doors, for example, the sliding door 1A in FIGS. adsorbs and combines with the sliding door 1A.
As the door moves toward the closed position, the permanent magnet 9 also moves together. When the permanent magnet 9 moves toward the door closed position, the rack 8g integrated with the permanent magnet 9 also moves toward the door closed position, and the gear 8f meshing with the rack 8g also rotates, and the sliding door 1A When the door-closed position is reached, the magnetic pole of the cylindrical permanent magnet 8a mounted coaxially with the gear 8f is placed in a position opposite to the fixed magnetic pole pieces 8c and 8d of the fixed magnetic pole 8b. As a result, a magnetic flux is formed that circulates from the cylindrical permanent magnet 8a → one fixed magnetic pole piece 8c → the movable magnetic pole 8e → the other fixed magnetic pole piece 8d → the cylindrical permanent magnet 8a, and the magnetic force of this magnetic flux causes the fixed magnetic pole 8b to A large holding force is generated between the movable magnetic poles 8e, and the sliding door 1 is held in the closed state without requiring any external supply energy.

However, if for some reason an abnormal force exceeding the holding force acting between the fixed magnetic pole 8b and the movable magnetic pole 8e is applied to the sliding door 1, and the sliding door 1 opens even slightly, it is dangerous. This is detected by the door closed detection switch 11, and the power is turned on again to the linear motor 4 to restart the linear motor 4 and return the door to the closed state.

When opening the sliding door 1, first, the linear motor 4 that drives the left sliding door 1A and the right sliding door 1B is energized so that the movable element 4b moves in the opposite direction to that when the door is closed. do. By energizing, each movable element 4b moves in the door opening direction, the rack 8g also moves in the door opening direction, and the gear 8f meshing with the rack 8g also rotates accordingly. When the mover 4b moves by a distance x, the magnetic pole of the cylindrical permanent magnet 8a mounted coaxially with the gear 8f forms a non-magnetic portion 8j located between the fixed magnetic pole pieces 8c and 8d of the fixed magnetic pole 8b. reach a position opposite to the location where the At this time, the magnetic flux circulating around the movable magnetic pole piece 8e from the cylindrical permanent magnet 8a disappears, thereby eliminating the magnetic force of the means for keeping the door closed. In this state, the coupling of the mover 4b with the permanent magnet 9 is released, the subsequent rotation of the cylindrical permanent magnet 8a is stopped, and the driving plate 7a and the passive plate 7b are engaged, and the sliding door 1 is opened. Start. At this time, since the magnetic force of the door closed state holding means has already disappeared, the load on the linear motor 4 is only applied to the sliding door 1.

[0016] Sliding doors may need to be opened manually in the event of an emergency such as a power outage. In such a case, the manual door opening operation is performed using the manual handle 12. At this time, the manual handle 12 moves by the distance x in the door opening direction against the spring force of the compression spring 12c, with its tip 12a remaining in contact with the contact plate 8k. Toban 8
When i moves by the distance x in the door opening direction, frame 8
h and therefore the rack 8g also move by a distance x in the door opening direction. Along with this, the gear 8f meshing with the rack 8g also rotates 90 degrees, and the magnetic pole of the cylindrical permanent magnet 8a mounted coaxially with the gear 8f changes from the fixed magnetic pole piece 8 of the fixed magnetic pole 8b.
c and 8d, to a position opposite to the non-magnetic portion 8j held between the fixed magnetic pole pieces 8c and 8d of the fixed magnetic pole 8b. In this position, the magnetic flux that circulates from the cylindrical permanent magnet 8a → one fixed magnetic pole piece 8c → the movable magnetic pole 8e → the other fixed magnetic pole piece 8d → the cylindrical permanent magnet 8a disappears, so that the fixed magnetic pole 8b and the movable magnetic pole 8e Since no magnetic force acts between them, the holding force disappears, and the sliding door 1 can then be opened easily manually. In addition, in the case of this operation, the execution of the manual door opening operation is
3 is detected and the power to the linear motor 4 is cut off.
Even if the door closed detection switch 11 detects that the door is open and sends a signal to turn on the linear motor 4, the linear motor 4
is never restarted.

In the explanation so far, the sliding door has been assumed to be a double-swinging door, but it may also be a single-swinging door. Only one of each is required for one single-single door.

[0018]

[Effects of the Invention] In the present invention, the movable element of the linear motor is not directly attached to the sliding door, but the sliding door is opened and closed with a gap provided by the engagement means, and the door closed state holding means is used. , has a cylindrical shape and has opposite N and S poles.
It is equipped with a permanent magnet magnetized in the radial direction so as to form a pole, and has an arcuate portion on the inside facing the outer diameter of the permanent magnet,
The cylindrical permanent magnet is rotatably attached to the inner periphery of a pair of fixed magnetic pole pieces, each of which has a common plane on its outer surface and has a non-magnetic part between each pole piece. A movable magnetic pole, which is fixed to the sliding door on one side, is attached to the flat surface of the sliding door in a removable manner on the other side, and a gear is attached coaxially to the cylindrical permanent magnet, and this gear is connected to the movable magnetic pole of the linear motor. The cylindrical permanent magnet is engaged with a rack connected to the child and rotated in accordance with the moving position of the mover of the linear motor. Furthermore, as a manual door opening method,
When opening the door manually, the vehicle is equipped with a manual lever supported by the side wall material near where the sliding door is installed and a return spring that normally holds the manual lever in a position corresponding to the closed state of the door. to move the rack of the door closed state holding means by pushing this lever against the spring force of the return spring,
By rotating the gear, the cylindrical permanent magnet is rotated, and the magnetic force that keeps the door closed is eliminated. As a result, no external supply energy is required when the door is closed, and therefore a stable and sufficiently large force for keeping the door closed can be obtained, and when necessary, such as during a vehicle emergency. The sliding door can be opened manually with a small amount of force, and an auxiliary power supply with a large current capacity is not required to release the holding force of the means for keeping the door closed during normal door opening. This has the effect of not requiring

[Brief explanation of drawings]

FIG. 1 is a detailed front view of a portion P in FIG. 1, which will be described later, of a sliding door closing device for a vehicle according to an embodiment of the present invention.

[Fig. 2] A front view including a sliding door of a door closing device for a sliding door for a vehicle according to an embodiment of the present invention.

[Figure 3] A-A sectional view in Figure 1

[Fig. 4] A configuration diagram of a conventional vehicle sliding door closing device in the sliding door closed state.

[Explanation of symbols]

1 Sliding door 4 Linear motor 4b Mover 6 Mover holding means 7 Engagement means 8 Door closed state holding means 8 8a　Cylindrical permanent magnet 8b Fixed magnetic pole 8c Fixed magnetic pole piece 8c’ outer surface 8d Fixed magnetic pole piece 8d’ outer surface 8e Movable magnetic pole 8f gear 8g rack 12 Manual handle

Claims (4)

[Claims] Claim 1: A support rail body extending horizontally along the side wall surface of the vehicle above the vehicle entrance, the upper part of which is suspended by a door roller, and is disposed so as to be able to open and close the vehicle entrance. In a door closing device for a vehicle sliding door in which a sliding door is driven to open and close by a linear motor, a first engaging body fixed to a movable element of the linear motor and a second engaging body attached to the sliding door are connected to each other to control movement of the sliding door. an engaging means that engages with a gap in the direction; a movable element holding means that holds the movable element at the end position of the door closing; and a door closed state that holds the sliding door in the closed position by magnetic force of a permanent magnet. A door closing device for a sliding door for a vehicle, comprising a holding means and a manual door opening means for manually releasing the holding force of the door closed state holding means when the door is manually opened. 2. The door closing device for a sliding door for a vehicle according to claim 1, wherein the door closed state holding means has a cylindrical shape and has magnetic poles consisting of an N pole and an S pole, and each magnetic pole is opposite to each other and has a diameter. It has a permanent magnet magnetized so as to be formed in the direction, and an arcuate portion facing the outer diameter of the permanent magnet on the inside, one side surface has a common plane, and there is a non-contact space between each other. a pair of fixed magnetic pole pieces each having a magnetic part and on the inner periphery of which the cylindrical permanent magnet is rotatably mounted; and one surface of the fixed magnetic pole piece is removably attracted to a common plane of the fixed magnetic pole pieces. a movable magnetic pole piece whose other surface is fixed to the sliding door; a gear coaxially attached to the cylindrical permanent magnet; and a gear meshed with the gear to move the cylindrical permanent magnet to a moving position of the movable element of the linear motor. When the sliding door is in the closed state, the sliding door is held in the closed state by the magnetic force generated by the magnetic flux from the cylindrical permanent magnet, and when the sliding door is opened, the cylindrical permanent magnet is rotated accordingly. For vehicles, characterized in that the position of the magnetic pole of the permanent magnet is rotated to eliminate the magnetic flux flowing through the fixed magnetic pole piece from the cylindrical permanent magnet, thereby eliminating the magnetic force from the permanent magnet. Sliding door closing device. 3. In the door closing device for a sliding door for a vehicle according to claim 1 or 2, the manual door opening means is supported by a side wall material in the vicinity of the sliding door of the vehicle, and It has a manual lever that is normally held at a position corresponding to the door closed state by a spring, and when manually opening the door, this manual lever is pushed against the spring force of the return spring to maintain the door closed state. By moving the rack in the direction of opening the door and rotating a gear mounted coaxially with the cylindrical permanent magnet, the cylindrical permanent magnet is rotated and the magnetic force that holds the sliding door in the closed state is eliminated. A door closing device for a sliding door for a vehicle, characterized in that: 4. The door closing device for a sliding door for a vehicle according to claim 1, wherein the engaging means includes a door closed state holding means between the first engaging body and the second engaging body. A door closing device for a sliding door for a vehicle, characterized by having a gap necessary for rotation of a permanent magnet to release a holding force.