JP2007113760A - Method of mounting motion control device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method of mounting a motion control device having different braking characteristics depending on the rotating direction of a pressing member, in common to either a right door or a left door. <P>SOLUTION: In the coincident state of a shaft 20 of the motion control device with the rotation center C of the door, the shaft 20 is connected to either one of a vehicle body B and the door through a first arm 101, and a casing 10 of the motion control device is connected to the other of the vehicle body B and the door through a second arm 102. The motion control device comprises a first pressing member rotated within the casing together with the shaft to press a viscous liquid when the casing is fixed and the shaft is rotated, a second pressing member rotated within the casing together with the casing to press the viscous liquid when the shaft is fixed and the casing is rotated, and a characteristic adjusting means for changing the braking characteristics depending on the rotating directions of the first and second pressing members. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a method for attaching a motion control device to an automobile door.

  2. Description of the Related Art Conventionally, there has been known a motion control device that controls the rotational motion of a movable body to be controlled by using the pressure of a viscous liquid. For example, a rotary damper slows the rotating motion of a movable body using the pressure of a viscous liquid, and can be cited as a typical example of a motion control device. Some motion control devices, such as a rotary damper, can not only control the motion speed of the movable body, but also maintain the stopped state of the movable body. For example, International Publication No. 2005/073589 pamphlet can hold a motion stop state of a movable body that stops at an arbitrary position unless an external force exceeding a predetermined value is applied to the movable body to be controlled. Furthermore, after the movement of the movable body is started, a movement control device is disclosed that can continue the movement of the movable body even if the external force on the movable body is lower than that at the start of the movement.

  Among such motion control devices, there is one having characteristic varying means for varying the braking characteristic depending on the rotation direction of the pressing member that presses the viscous liquid. As the characteristic variable means, there are known a method using a check valve and a method of forming a flow path through which a viscous liquid can pass in a part of the rotation range of the pressing member. For example, in the motion control device described in the pamphlet, the characteristic variable means (flow path) is formed in a part of the rotation range of the pressing member, and when the pressing member rotates in one direction, the rotation of the characteristic variable means exists. The pressure of the viscous liquid is reduced in the vicinity of the end point, and when the pressing member rotates in the reverse direction, the pressure of the viscous liquid is reduced in the vicinity of the start point of the rotation where the characteristic variable means exists. Therefore, when such a motion control device is applied to a door of an automobile, in the operation range from immediately before the door is completely closed until it is completely closed, due to the action of the characteristic varying means, the viscous liquid is more than in the other operation ranges. The pressure can be reduced and the braking force applied to the door can be reduced.

  However, since the doors of automobiles are provided on both sides of the vehicle body and the rotation direction when opening and closing differs between the left and right doors, motion control devices having different braking characteristics depending on the rotation direction of the pressing member are respectively attached to the left and right doors. In some cases, the left and right doors require dedicated motion control devices.

International Publication No. 2005/073589 Pamphlet

  The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a method that can be commonly attached to the left and right doors even if the motion control device has different braking characteristics depending on the rotation direction of the pressing member. To do.

In order to solve the above-described problems, the present invention provides the following method for attaching a motion control device.
A method of attaching a motion control device to a door of an automobile,
The motion control device includes:
When the casing is fixed and the shaft rotates, a first pressing member that rotates in the casing together with the shaft and presses the viscous liquid;
When the shaft is fixed and the casing rotates, a second pressing member that rotates in the casing together with the casing and presses the viscous liquid;
Characteristic varying means for varying the braking characteristic depending on the rotation direction of the first and second pressing members,
With the center of the shaft of the motion control device aligned with the center of rotation of the door, the shaft is connected to either the vehicle body or the door via the first arm,
A method of connecting the casing of the motion control device to either the vehicle body or the door via a second arm.

  According to the present invention, since the motion control device has the characteristic varying means that varies the braking characteristics depending on the rotation directions of the first and second pressing members, the braking characteristics vary depending on the rotation directions of the first and second pressing members. However, in a state where the center of the shaft of the motion control device is aligned with the center of rotation of the door, the shaft is connected to either the vehicle body or the door via the first arm, and the casing of the motion control device is Since it is the structure connected with either the other of a vehicle body or a door via 2 arms, it can attach to the door on either side of a motor vehicle in common. Therefore, it is not necessary to attach dedicated motion control devices to the left and right doors. In addition, in the dedicated motion control device, a problem occurs when an object to be attached to the right door is attached to the left door, but according to the present invention, each door can be attached to any of the left and right doors. Therefore, it is possible to obtain a braking characteristic suitable for the vehicle, and there is no mistake that the object to be installed is wrong.

  Hereinafter, embodiments of the present invention will be described with reference to examples shown in the drawings.

  1 to 6 are diagrams showing the internal structure of a motion control apparatus employed in an embodiment of the present invention. As shown in these drawings, the motion control device includes the casing 10, the shaft 20, the first pressing members 31, 32, the second pressing members 41, 42, and the characteristic variable means.

  As shown in FIG. 2, the casing 10 includes a cylindrical body 11, an upper lid 12, a lower lid 13, and an inner wall 14. The cylindrical body 11 has a substantially circular cross section and is open at both ends. The upper lid 12 closes the opening on the one end side of the cylindrical body 11, and has a hole 12a penetrating in the thickness direction. The lower lid 13 closes the opening on the other end side of the cylindrical body 11. The inner wall 14 is provided in contact with the lower lid 13 inside the cylindrical body 11. The inner wall 14 is formed with a recess 14a into which the end of the shaft 20 is fitted.

  The axis | shaft 20 is provided in the casing 10 so that one edge part may protrude outside from the casing 10 (refer FIG.2 and FIG.3). One end side of the shaft 20 is supported by being inserted through the hole 12 a of the upper lid 12, and the other end portion of the shaft 20 is supported by being fitted into the recess 14 a of the inner wall 14. The casing 10 and the shaft 20 are relatively rotatable.

  As shown in FIGS. 1 and 3, the first pressing members 31 and 32 are formed integrally with the shaft 20 so as to protrude from the outer peripheral surface of the shaft 20 toward the inner peripheral surface of the cylindrical body 11. . When the casing 10 is fixed and the shaft 20 rotates, the first pressing members 31 and 32 play a role of rotating in the casing 10 together with the shaft 20 and pressing the viscous liquid.

  As shown in FIG. 1, the second pressing members 41 and 42 are formed in a shape in which the front end surface is in contact with the outer peripheral surface of the shaft 20 and the rear end surface is in contact with the inner peripheral surface of the cylindrical body 11, and is fixed to the casing 10. ing. When the shaft 20 is fixed and the casing 10 rotates, the second pressing members 41 and 42 rotate in the casing 10 together with the casing 10 and play a role of pressing the viscous liquid.

  As illustrated in FIG. 1, the first and second pressing members 31, 32, 41, and 42 are disposed in the casing 10, whereby the first to fourth chambers 51 to 54 are formed in the casing 10. It is formed. The first to fourth chambers 51 to 54 are filled with a viscous liquid. Silicon oil or the like can be used as the viscous liquid.

  Of the two first pressing members 31, 32, one first pressing member 31 is provided with a seal member 61 (see FIGS. 1 and 3). The seal member 61 functions to prevent the viscous liquid in the first and third chambers 51 and 53 from moving to each other through a gap formed between the casing 10 and the first pressing member 31. is there. Similarly, the other first pressing member 32 is provided with a seal member 62 (see FIGS. 1 and 3). The seal member 62 serves to prevent the viscous liquid in the second and fourth chambers 52 and 54 from moving with each other through a gap formed between the casing 10 and the first pressing member 32. is there.

  Of the two second pressing members 41, 42, one second pressing member 41 is provided with a seal member 63 (see FIGS. 1 and 2). The seal member 63 is formed between the gap formed between the casing 10 and the second pressing member 41 and the shaft 20 and the second pressing member 41 so that the viscous liquid in the first and second chambers 51 and 52 is formed. It works to prevent movement between each other through gaps. Similarly, the other second pressing member 42 is provided with a seal member 64 (see FIGS. 1 and 2). The seal member 64 is formed between a gap formed between the casing 10 and the second pressing member 42 and the shaft 20 and the second pressing member 42 where the viscous liquid in the third and fourth chambers 53 and 54 is formed. It works to prevent movement between each other through gaps.

  Grooves 71 and 72 functioning as characteristic changing means are formed in portions corresponding to the bottom surfaces of the second and third chambers 52 and 53 in one surface of the inner wall 14 (see FIGS. 1 and 4). The presence of the grooves 71 and 72 in a part of the rotation range of the first and second pressing members 31, 32, 41 and 42, for example, when the first pressing members 31 and 32 rotate, the grooves 71 and 72. Since a flow path through which the viscous liquid can pass is formed between the first pressing members 31 and 32 and the grooves 71 and 72 rotating on the first pressing members 31 and 32, a portion where the grooves 71 and 72 do not exist is formed. The pressure (resistance) of the viscous liquid can be reduced as compared to when the 32 rotates. The characteristic varying means is not limited to the grooves 71 and 72 as described above, but may be one that makes the braking characteristic different depending on the rotation direction of the first and second pressing members 31, 32, 41, and 42. That's fine.

  First to fourth passages 81 to 84 are also formed in the inner wall 14 (see FIGS. 1 to 5). The first passage 81 is formed to communicate the first chamber 51 and the second chamber 52. The second passage 82 is formed to communicate the third chamber 53 and the fourth chamber 54. The third passage 83 is formed to communicate the first chamber 51 and the fourth chamber 54. The fourth passage 84 is formed to communicate the second chamber 52 and the third chamber 53.

  Here, as shown in FIG. 5, the third passage 83 has a hole 83 a that penetrates the inner wall 14 in the thickness direction and opens into the first chamber 51, and one end is connected to the hole 83 a, and the other The end portion of the inner wall 14 is configured to have a groove 83 b formed on the end surface of the inner wall 14 so as to be connected to a hole constituting the second passage 82. Here, the holes constituting the second passage 82 pass through the inner wall 14 in the thickness direction and open to the fourth chamber 54.

  As shown in FIG. 5, the fourth passage 84 has a hole 84 a that penetrates the inner wall 14 in the thickness direction and opens into the third chamber 53, one end connected to the hole 84 a, and the other end Has a groove 84b formed on the end surface of the inner wall 14 so as to be connected to the hole constituting the first passage 81. The holes constituting the first passage 81 referred to here pass through the inner wall 14 in the thickness direction and open to the first chamber 51. The openings of the grooves 83 a and 84 a constituting the third and fourth passages 83 and 84 are closed by the lower lid 13.

The inner wall 14 is further provided with first and second valve mechanisms.
The first valve mechanism is provided in the first passage 81. The first valve mechanism employed in this embodiment has the following functions.
(1) a function of preventing the backflow of viscous liquid from the second chamber 52 to the first chamber 51;
(2) a function of preventing the viscous liquid in the first chamber 51 from moving to the second chamber 52 through the first passage 81 when the internal pressure of the first chamber 51 is a predetermined value or less;
(3) When the internal pressure of the first chamber 51 exceeds a predetermined value, the viscous liquid in the first chamber 51 can move to the second chamber 52 through the first passage 81, and then the first chamber 51 A function of allowing the viscous liquid to move through the first passage 81 even if the internal pressure of the liquid drops below a predetermined value,
(4) When the rotational motion of the first or second pressing member 31, 32, 41, 42 stops, the viscous liquid in the first chamber 51 is prevented from moving to the second chamber 52 through the first passage 81. And (5) a function of restricting the flow rate of the viscous liquid passing through the first passage 81.

  As shown in FIG. 6, the first valve mechanism forms a gap for reducing the flow rate of the viscous liquid between the valve member that can close the first passage 81 and the outer peripheral surface of the valve member housed inside. A working chamber 91a having an inner peripheral surface, and a spring 91b that gives resistance to the valve member when the valve member tries to move in the opening direction by receiving the pressure of the viscous liquid are configured. Here, the valve member includes a spherical valve body 91c and a valve presser 91d provided so as to be interposed between the valve body 91c and the spring 91b.

  The size of the pressure receiving surface of the valve member that receives the pressure of the viscous liquid about to flow into the working chamber 91a from the first chamber 51 is important for exerting the function (3) described above. That is, in a normal check valve configured to include a valve member and a spring that imparts resistance to the valve member when the valve member is about to move in the opening direction, the size of the pressure receiving surface when the valve member is closed Therefore, when the pressure of the viscous liquid decreases after the valve is opened, the valve member is pushed back by the resistance force of the spring. Therefore, in a normal check valve, when the internal pressure of the first chamber 51 exceeds a predetermined value, the viscous liquid in the first chamber 51 can move to the second chamber 52 through the first passage 81. However, if the internal pressure of the first chamber 51 drops below a predetermined value after that, the valve body closes the first passage 81, so that the viscous liquid can be allowed to move through the first passage 81. Can not. Therefore, in order to prevent the valve member from being pushed back by the resistance force of the spring 91b even if the pressure of the viscous fluid decreases after the valve is opened, the size of the pressure receiving surface at the time of valve closing and the size of the pressure receiving surface after the valve opening is set. It is necessary to provide a large difference so that a large pressure receiving surface is provided after the valve is opened.

  In the motion control device employed in the present embodiment, the pressure receiving surface of the valve body 91c is set small, and the pressure receiving surface of the valve presser 91d is set large so that the pressure of the viscous liquid decreases after the valve is opened. The member is prevented from being pushed back by the resistance force of the spring 91b.

  As shown in FIG. 6, the gap a for reducing the flow rate of the viscous liquid is formed between a groove formed in a part of the outer peripheral surface of the valve presser 91d and the inner peripheral surface of the working chamber 91a. A compression coil spring is used as the spring 91b.

The second valve mechanism is provided in the second passage 82. The 2nd valve mechanism employ | adopted in the present Example has the following functions.
(1) a function of preventing the backflow of viscous liquid from the fourth chamber 54 to the third chamber 53;
(2) a function of preventing the viscous liquid in the third chamber 53 from moving to the fourth chamber 54 through the second passage 82 when the internal pressure of the third chamber 53 is equal to or less than a predetermined value;
(3) When the internal pressure of the third chamber 53 exceeds a predetermined value, the viscous liquid in the third chamber 53 can move to the fourth chamber 54 through the second passage 82, and thereafter, the third chamber 53 A function that allows the viscous liquid to move through the second passage 82 even if the internal pressure of the liquid drops below a predetermined value;
(4) When the rotational movement of the first or second pressing member 31, 32, 41, 42 stops, the viscous liquid in the third chamber 53 is prevented from moving to the fourth chamber 54 through the second passage 82. And (5) a function of reducing the flow rate of the viscous liquid passing through the second passage 82.

  As shown in FIG. 6, the second valve mechanism is configured in the same manner as the first valve mechanism described above. That is, the second valve mechanism includes a valve member (valve body 92c and valve retainer 92d) configured in the same manner as the valve member (valve body 91c and valve retainer 91d), the working chamber 91a and the spring 91b constituting the first valve mechanism, respectively. ) And a working chamber 92a and a spring 92b.

  The motion control device configured as described above is attached to the door of the automobile as follows. That is, when attaching to the right door R, as shown in FIGS. 9, 10, and 12, the center of the shaft 20 (the rotation center of the shaft 20) is made to coincide with the rotation center C of the door R. The shaft 20 is connected to the door R via the first arm 101, and the casing 10 is connected to the vehicle body B via the second arm 102. On the other hand, when attached to the left door L, the center of the shaft 20 (the center of rotation of the shaft 20) is aligned with the center of rotation C of the door L as shown in FIGS. The shaft 20 is connected to the vehicle body B via the first arm 101, and the casing 10 is connected to the door L via the second arm 102.

  As described above, when the right door R is opened and closed by attaching the motion control device with the center of the shaft 20 aligned with the rotation center C of the doors R and L, the casing 10 is fixed, and the shaft 20 is Will rotate. On the other hand, when the left door L is opened and closed, the shaft 20 is fixed, and the casing 10 rotates around the shaft 20.

  Therefore, the motion control devices attached to the left and right doors L and R can be the same, that is, the same structure, and particularly the same arrangement of the characteristic variable means can be used. Therefore, it is not necessary to use dedicated motion control devices for the left and right doors L and R. Furthermore, when attaching to the left and right doors L, R, it is not necessary to make the arrangement of the shaft 20 and the casing 10 different, and the attachment direction of the motion control device can be made common (for example, when attaching to the left and right doors L, R). In any case, the casing 10 can be arranged on the upper side and the shaft 20 can be arranged on the lower side, so that the movement control device can be easily mounted and errors in the mounting direction can be eliminated.

  The motion control devices attached to the left and right doors L and R as described above operate as follows.

  For example, when the right door R is slightly opened from the fully closed position and its rotation is stopped, if a gust blows on the door R or if a person or an object is inadvertently contacted, the door R Tries to rotate by receiving such an unintended external force. However, at this time, even if the door R is about to rotate, if the external force applied to the door R is equal to or less than a predetermined value, the motion control device can hold the stopped state of the door R.

  That is, when the door R receives an unintended external force, for example, when it tries to rotate in the opening direction, the first pressing members 31 and 32 together with the shaft 20 try to rotate in one direction (clockwise in FIG. 1). . If the external force with respect to the door R is below a predetermined value at this time, since the force with which the 1st press member 31 presses the viscous liquid of the 1st chamber 51 is also weak, the internal pressure of the 1st chamber 51 does not increase so much and reaches a predetermined value. do not do. In the first valve mechanism provided in the first passage 81, the internal pressure of the first chamber 51 that increases when the viscous liquid in the first chamber 51 is pressed by the first pressing member 31 that tries to rotate in one direction has a predetermined value. In the following cases, the valve member closes the first passage 81 and prevents the viscous liquid in the first chamber 51 from moving to the second chamber 52 through the first passage 81. Further, the second valve mechanism provided in the second passage 82 prevents the backflow of the viscous liquid from the fourth chamber 54 to the third chamber 53. Further, the viscous liquid in the fourth chamber 54 cannot move to the first chamber 51 through the third passage 83 unless the first valve mechanism is opened. Accordingly, the first pressing members 31 and 32 cannot rotate in one direction. As a result, the stop state of the door R is maintained.

  On the other hand, when the door R receives an unintended external force, for example, when the door R attempts to rotate in the closing direction, the first pressing members 31 and 32 together with the shaft 20 attempt to rotate in the reverse direction (counterclockwise in FIG. 1). To do. At this time, if the external force with respect to the door R is equal to or less than a predetermined value, the force with which the first pressing member 31 presses the viscous liquid in the third chamber 53 is weak, so the internal pressure in the third chamber 53 does not increase so much and reaches the predetermined value. do not do. In the second valve mechanism provided in the second passage 82, the internal pressure of the third chamber 53, which is increased when the viscous liquid in the third chamber 53 is pressed by the first pressing member 31 to rotate in the reverse direction, is a predetermined value. In the following cases, the valve member closes the second passage 82 to prevent the viscous liquid in the third chamber 53 from moving to the fourth chamber 54 through the second passage 82. Further, the first valve mechanism provided in the first passage 81 prevents the backflow of the viscous liquid from the second chamber 52 to the first chamber 51. Further, the viscous liquid in the second chamber 52 cannot move to the third chamber 53 through the fourth passage 84 unless the second valve mechanism is opened. Accordingly, the first pressing members 31 and 32 cannot rotate in the reverse direction. As a result, the stop state of the door R is maintained.

  When the left door L is in the same situation, for example, when the door L tries to rotate in the opening direction, the motion control device provided in the left door L has the second pressing members 41 and 42 together with the casing 10. Attempts to rotate in one direction (counterclockwise in FIG. 1). At this time, if the external force with respect to the door L is less than or equal to a predetermined value, the force with which the second pressing member 41 presses the viscous liquid in the first chamber 51 is weak, so the internal pressure in the first chamber 51 does not increase so much and reaches the predetermined value. do not do. In the first valve mechanism provided in the first passage 81, the internal pressure of the first chamber 51, which is increased when the viscous liquid in the first chamber 51 is pressed by the second pressing member 41 that tries to rotate in one direction, has a predetermined value. In the following cases, the valve member closes the first passage 81 and prevents the viscous liquid in the first chamber 51 from moving to the second chamber 52 through the first passage 81. Further, the second valve mechanism provided in the second passage 82 prevents the backflow of the viscous liquid from the fourth chamber 54 to the third chamber 53. Further, the viscous liquid in the fourth chamber 54 cannot move to the first chamber 51 through the third passage 83 unless the first valve mechanism is opened. Therefore, the second pressing members 41 and 42 cannot rotate in one direction. As a result, the stop state of the door L is maintained.

  On the other hand, when the door L receives an unintended external force, for example, when the door L tries to rotate in the closing direction, the second pressing members 41 and 42 together with the casing 10 try to rotate in the reverse direction (clockwise in FIG. 1). . If the external force with respect to the door L is below a predetermined value at this time, since the force with which the 2nd press member 42 presses the viscous liquid of the 3rd chamber 53 is also weak, the internal pressure of the 3rd chamber 53 does not increase very much, but reaches a predetermined value. do not do. In the second valve mechanism provided in the second passage 82, the internal pressure of the third chamber 53, which is increased when the viscous liquid in the third chamber 53 is pressed by the second pressing member 42 that tries to rotate in the reverse direction, is a predetermined value. In the following cases, the valve member closes the second passage 82 to prevent the viscous liquid in the third chamber 53 from moving to the fourth chamber 54 through the second passage 82. The first valve mechanism provided in the first passage 81 prevents the viscous liquid from flowing back from the second chamber 52 to the first chamber 51. Further, the viscous liquid in the second chamber 52 cannot move to the third chamber 53 through the fourth passage 84 unless the second valve mechanism is opened. Accordingly, the second pressing members 41 and 42 cannot rotate in the reverse direction. As a result, the stop state of the door L is maintained.

  According to the motion control device employed in the present embodiment, when the left and right doors L and R, which are held at an arbitrary position as described above, are intentionally rotated, the left and right doors L and R are intentionally rotated. When releasing the stop state, a large external force is temporarily required. After the left and right doors L and R start to rotate, the left and right doors L and R continue to rotate with a small external force. Can do.

  That is, for example, when the right door R in the stopped state is intentionally rotated in the opening direction, a large external force is applied to the door R in the stopped state. As a result, the viscous liquid in the first chamber 51 is strongly pressed by the first pressing member 31, and the internal pressure of the first chamber 51 is increased. At this time, when the internal pressure of the first chamber 51 exceeds a predetermined value, the first valve mechanism provided in the first passage 81 causes the viscous liquid in the first chamber 51 to move to the second chamber 52 through the first passage 81. Make it possible. That is, when the internal pressure of the first chamber 51 exceeds a predetermined value, the pressure of the viscous liquid received by the valve member (valve body 91c) becomes larger than the resistance force of the spring 91b. Therefore, as shown in FIG. The members (the valve body 91c and the valve presser 91d) move in the opening direction, and the viscous liquid can pass through the first passage 81. Thereby, the viscous liquid in the fourth chamber 54 pressed by the first pressing member 32 moves to the first chamber 51, and the viscous liquid in the second chamber 52 moves to the third chamber 53 through the fourth passage 84. . Accordingly, the first pressing members 31 and 32 can rotate in one direction. As a result, the stop state of the door R is released.

  After the rotation of the door R is started, even if the pressure of the viscous liquid received by the valve member is reduced, a large pressure receiving surface of the valve member (valve holding member 91d) is provided, so that the valve is driven by the resistance force of the spring 91b. The member is not pushed back. Therefore, the first pressing members 31 and 32 can continue to rotate in one direction. As a result, the door R can be rotated with a small external force.

  Further, since the first valve mechanism has a function of reducing the flow rate of the viscous liquid passing through the first passage 81, the door R is prevented from rotating vigorously after the stop state of the door R is released. be able to. That is, when the viscous liquid passes through the gap a formed between the outer peripheral surface of the valve member (valve retainer 91d) and the inner peripheral surface of the working chamber 91a, the flow rate of the viscous liquid passing through the first passage 81 is By being squeezed, resistance is generated in the viscous liquid, and the rotational movement of the first pressing members 31 and 32 is made slow. As a result, a braking force is applied to the door R.

  On the other hand, when the stopped door R is intentionally rotated in the closing direction, a large external force is applied to the stopped door R in the same manner as when the door R is rotated in the opening direction. As a result, the viscous liquid in the third chamber 53 is strongly pressed against the first pressing member 31, and the internal pressure of the third chamber 53 increases. At this time, when the internal pressure of the third chamber 53 exceeds a predetermined value, the second valve mechanism provided in the second passage 82 causes the viscous liquid in the third chamber 53 to move to the fourth chamber 54 through the second passage 82. Make it possible. That is, when the internal pressure of the third chamber 53 exceeds a predetermined value, the pressure of the viscous liquid received by the valve member (valve body 92c) becomes larger than the resistance force of the spring 92b. Therefore, as shown in FIG. The members (the valve body 92c and the valve presser 92d) move in the opening direction, and the viscous liquid can pass through the second passage 82. Thereby, the viscous liquid in the second chamber 52 pressed by the first pressing member 32 moves to the third chamber 53, and the viscous liquid in the fourth chamber 54 moves to the first chamber 51 through the third passage 83. . Accordingly, the first pressing members 31 and 32 can rotate in the reverse direction, and as a result, the stop state of the door R is released.

  After the rotation of the door R is started, even if the pressure of the viscous liquid received by the valve member is reduced, a large pressure receiving surface of the valve member (valve holding member 92d) is provided. The member is not pushed back. Accordingly, the first pressing members 31 and 32 can continue to rotate in the reverse direction. As a result, the door R can be rotated with a small external force.

  Further, since the second valve mechanism has a function of restricting the flow rate of the viscous liquid passing through the second passage 82, the door R is prevented from rotating vigorously after the stop state of the door R is released. be able to. That is, when the viscous liquid passes through the gap b formed between the outer peripheral surface of the valve member (valve retainer 92d) and the inner peripheral surface of the working chamber 92a, the flow rate of the viscous liquid passing through the second passage 82 is increased. By being squeezed, resistance is generated in the viscous liquid, and the rotational movement of the first pressing members 31 and 32 is made slow. As a result, a braking force is applied to the door R.

  However, since the motion control device has the characteristic variable means, the range d (see FIG. 1) in which the grooves 71 and 72 function as characteristic variable means exist in the rotation range of the first pressing members 31 and 32, that is, the door. In the operating range P from when R is completely closed to when it is completely closed, the pressure (resistance) of the viscous liquid is reduced more than the other operating ranges Q by the action of the characteristic variable means, and the control applied to the door R is reduced. The power can be reduced (see FIG. 9). Accordingly, the door R can be smoothly and completely closed.

  On the other hand, when the left door L in the stopped state is intentionally rotated in the opening direction, a large external force is applied to the door L in the stopped state. Accordingly, the viscous liquid in the first chamber 51 is strongly pressed by the second pressing member 41, and the internal pressure in the first chamber 51 is increased. At this time, when the internal pressure of the first chamber 51 exceeds a predetermined value, the first valve mechanism provided in the first passage 81 causes the viscous liquid in the first chamber 51 to move to the second chamber 52 through the first passage 81. Make it possible. That is, when the internal pressure of the first chamber 51 exceeds a predetermined value, the pressure of the viscous liquid received by the valve member (valve body 91c) becomes larger than the resistance force of the spring 91b. Therefore, as shown in FIG. The members (the valve body 91c and the valve presser 91d) move in the opening direction, and the viscous liquid can pass through the first passage 81. Thereby, the viscous liquid in the fourth chamber 54 pressed by the second pressing member 42 moves to the first chamber 51, and the viscous liquid in the second chamber 52 moves to the third chamber 53 through the fourth passage 84. . Accordingly, the second pressing members 41 and 42 can rotate in one direction. As a result, the stop state of the door L is released.

  After the door L starts to rotate, even if the pressure of the viscous liquid received by the valve member decreases, a large pressure receiving surface of the valve member (valve retainer 91d) is provided. The member is not pushed back. Therefore, the second pressing members 41 and 42 can continue to rotate in one direction. As a result, the door L can be rotated with a small external force.

  Further, since the first valve mechanism has a function of reducing the flow rate of the viscous liquid passing through the first passage 81, the door L is prevented from pivoting vigorously after the stop state of the door L is released. be able to. That is, when the viscous liquid passes through the gap a formed between the outer peripheral surface of the valve member (valve retainer 91d) and the inner peripheral surface of the working chamber 91a, the flow rate of the viscous liquid passing through the first passage 81 is By being squeezed, resistance is generated in the viscous liquid, and the rotational movement of the second pressing members 41 and 42 is slowed down. As a result, a braking force is applied to the door L.

  On the other hand, when the left door L in the stopped state is intentionally turned in the closing direction, a large external force is applied to the door L in the stopped state as in the case of turning the door L in the opening direction. As a result, the viscous liquid in the third chamber 53 is strongly pressed against the second pressing member 42, and the internal pressure of the third chamber 53 is increased. At this time, when the internal pressure of the third chamber 53 exceeds a predetermined value, the second valve mechanism provided in the second passage 82 causes the viscous liquid in the third chamber 53 to move to the fourth chamber 54 through the second passage 82. Make it possible. That is, when the internal pressure of the third chamber 53 exceeds a predetermined value, the pressure of the viscous liquid received by the valve member (valve body 92c) becomes larger than the resistance force of the spring 92b. Therefore, as shown in FIG. The members (the valve body 92c and the valve presser 92d) move in the opening direction, and the viscous liquid can pass through the second passage 82. Thereby, the viscous liquid in the second chamber 52 pressed by the second pressing member 41 moves to the third chamber 53, and the viscous liquid in the fourth chamber 54 moves to the first chamber 51 through the third passage 83. . Accordingly, the second pressing members 41 and 42 can rotate in the reverse direction, and as a result, the stopped state of the door L is released.

  After the door L starts to rotate, even if the pressure of the viscous liquid received by the valve member decreases, a large pressure-receiving surface of the valve member (valve retainer 92d) is provided. The member is not pushed back. Accordingly, the second pressing members 41 and 42 can continue to rotate in the reverse direction. As a result, the door L can be rotated with a small external force.

  Further, since the second valve mechanism has a function of reducing the flow rate of the viscous liquid passing through the second passage 82, the door L is prevented from pivoting vigorously after the stop state of the door L is released. be able to. That is, when the viscous liquid passes through the gap b formed between the outer peripheral surface of the valve member (valve retainer 92d) and the inner peripheral surface of the working chamber 92a, the flow rate of the viscous liquid passing through the second passage 82 is increased. By being squeezed, resistance is generated in the viscous liquid, and the rotational movement of the second pressing members 41 and 42 is slowed down. As a result, a braking force is applied to the door L.

  Here, since the motion control device provided in the left door L also has a characteristic variable means, similarly to the motion control device provided in the right door R, the characteristics of the rotation range of the second pressing members 41 and 42 are the same. In the range d (see FIG. 1) where the grooves 71 and 72 functioning as the variable means exist, that is, in the operation range P from when the door L is completely closed until it is completely closed, other operations are performed by the action of the characteristic variable means. The pressure (resistance) of the viscous liquid can be reduced from the range Q, and the braking force applied to the door L can be reduced (see FIG. 9). Therefore, the door L can be closed smoothly and completely.

It is a figure which shows the internal structure of the motion control apparatus employ | adopted in the attachment method which concerns on one Example of this invention. It is an AA section sectional view in FIG. It is a BB part fragmentary sectional view in FIG. FIG. 2 is a partial cross-sectional view taken along a line CC in FIG. 1. FIG. 3 is a partial cross-sectional view taken along the line AA in FIG. 2 and shows a state in which a valve member and a spring constituting the first and second valve mechanisms are removed. FIG. 2 is a partial cross-sectional view taken along a line DD in FIG. 1. It is a figure for demonstrating the effect | action of a 1st valve mechanism. It is a figure for demonstrating the effect | action of a 2nd valve mechanism. It is a figure for demonstrating the attachment method of a motion control apparatus. It is the A section enlarged view in FIG. It is the B section enlarged view in FIG. It is a figure which shows the state which attached the motion control apparatus to the right door. It is a figure which shows the state which attached the motion control apparatus to the left door.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Casing 11 Cylindrical body 12 Upper cover 12a Hole 13 Lower cover 14 Inner wall 14a Recess 20 Axis 31, 32 1st press member 41, 42 2nd press member 51 1st chamber 52 2nd chamber 53 3rd chamber 54 4th chamber 61 ~ 64 Seal member 71, 72 Groove (characteristic variable means)
81 first passage 82 second passage 83 third passage 83a hole 83b groove 84 fourth passage 84a hole 84b groove 91a, 92a working chamber 91b, 92b spring 91c, 92c valve body 91d, 92d valve retainer 101 first arm 102 second Arm R Right door L Left door B Body

Claims (1)

A method of attaching a motion control device to a door of an automobile,
The motion control device includes:
When the casing is fixed and the shaft rotates, a first pressing member that rotates in the casing together with the shaft and presses the viscous liquid;
When the shaft is fixed and the casing rotates, a second pressing member that rotates in the casing together with the casing and presses the viscous liquid;
Characteristic varying means for varying the braking characteristic depending on the rotation direction of the first and second pressing members,
With the center of the shaft of the motion control device aligned with the center of rotation of the door, the shaft is connected to either the vehicle body or the door via the first arm,
A method of connecting the casing of the motion control device to either the vehicle body or the door via a second arm.

Images