JP4559107B2 - Open / close assist device for sliding door - Google Patents

Description

  The present invention provides an inclination detection means for detecting road surface flatness, ascending slope, and descending slope, and when the sliding door is moved forward of the vehicle body in the case of the ascending slope according to the detection result of the detecting means. Auxiliary means for urging the sliding door forward, and in the case of downhill, urging the sliding door rearward when moving the sliding door rearward of the vehicle body, and opening / closing assistance of the sliding door Relates to the device.

  As shown in FIG. 10, an opening 3 for getting on and off is provided on a side surface of a vehicle 1 such as a one-box car, and this opening 3 is opened and closed by a slide door 5 movable in the front-rear direction of the vehicle. It has become.

  However, as shown in FIG. 11, when the vehicle 1 is parked on the uphill 7, the sliding door 5 is closed. When the vehicle 1 is parked on the downhill 9, the sliding door 5 is opened. There is a heavy problem due to its own weight of 5.

  In order to solve such a problem, two urging means of a first urging means for urging the sliding door 5 in the opening direction and a second urging means for urging the sliding door 5 in the closing direction are provided. In FIG. 11, when the vehicle 1 is parked on the uphill 7, the urging force of the second urging means is used, and when the vehicle 1 is parked on the downhill 9, the urging force of the first urging means is used. There has been proposed a sliding door opening / closing assisting device having assisting means (see, for example, Patent Document 1).

An electric inclination sensor is used as detection means for detecting whether the road surface on which the vehicle is parked is flat, uphill, or downhill (for example, Patent Document 2). reference).
Japanese Patent Laid-Open No. 7-266890 (pages 3 to 5, FIGS. 1, 2, and 3) Japanese Patent Application Laid-Open No. 7-1962 (page 4, FIG. 1)

However, when an electrical inclination sensor is used as the means for detecting the inclination, a control device, a harness, a motor for operating the auxiliary means, and the like are required, which increases the cost.
The present invention has been made in view of the above problems, and an object thereof is to provide a sliding door opening / closing assisting means capable of reducing the cost.

According to a first aspect of the present invention, there is provided an inclination detecting means for detecting road surface flatness, ascending slope, and descending slope, and according to a detection result of the detecting means, in the case of the ascending slope, the sliding door is moved forward of the vehicle body. An auxiliary means for urging the slide door forward when moving, and in the case of downhill, urging the slide door backward when moving the slide door rearward of the vehicle body In the door opening / closing assist device, the inclination detecting means is provided rotatably on a surface substantially parallel to the side surface of the vehicle, and on the uphill and downhill, an arm portion that rotates in opposite directions, and the arm portion A transmission part that transmits the movement of the sliding door to the auxiliary means, the auxiliary means being a forward / reversely rotating drum in conjunction with the forward / backward movement of the vehicle body of the slide door, Drum forward direction, And the rolling direction energizable biasing means, rotatable in conjunction with rotation of the drum, one end and disengageably a of the biasing means, the transmission unit can abut, the drum positive A first spring lever capable of transmitting the urging force of the urging means urging in the rolling direction to the drum, and being rotatable in conjunction with the rotation of the drum, are engaged with the other end side of the urging means. A second spring lever capable of transmitting the urging force of the urging means for urging the drum in the reverse rotation direction so that the transmission portion can be in contact with the drum, and when the road surface is an uphill, Due to the rotation of the arm portion, the transmission portion abuts on the second spring lever to fix the other end side of the biasing means, and one end side of the biasing means passes through the first spring lever and the drum. Energize the sliding door forward, and the road surface is downhill When the arm portion rotates, the transmission portion contacts the first spring lever to fix one end side of the urging means, and the other end side of the urging means passes through the second spring lever and the drum. And a sliding door opening / closing assisting device for biasing the sliding door backward .

  The arm provided rotatably on a plane substantially parallel to the side of the vehicle is perpendicular to the road surface when the road surface is flat, inclined in one direction when going uphill, and downhill Tilts in the other direction.

According to a second aspect of the present invention, the transmission portion of the tilt detection means is provided in a first gear provided at a place other than the rotation center of the arm, and is provided rotatably on the auxiliary means side. And a control lever that is provided on the second gear and transmits the movement of the arm portion to the first spring lever and the second spring lever of the auxiliary means. The sliding door opening / closing assisting device according to claim 1.

As the arm portion of the inclination detecting means rotates in one direction or the other direction according to the uphill or downhill of the road surface, the first gear rotates together with the arm portion, and the second gear rotates. When the second gear rotates, the control lever rotates in one direction or the other direction together with the second gear. The movement of the arm portion is transmitted to the first spring lever and the second spring lever of the auxiliary means by the rotation of the control lever in one direction or the other direction.

  According to the first and second aspects of the invention, the inclination detecting means includes an arm portion rotatably provided on a surface substantially parallel to the side surface of the vehicle, and movement of the arm portion to the auxiliary means. By including the transmission unit for transmission, it is possible to detect the flatness, uphill, and downhill of the road surface with a mechanical mechanism, and it is possible to operate the auxiliary means with the mechanical mechanism.

Therefore, compared with the case where an electrical inclination sensor is used, a control device, a harness, a motor, and the like are unnecessary, and the cost can be reduced.
According to the invention which concerns on Claim 2, a reliable action | operation can be obtained because a control lever rotates to one direction or the other direction according to the uphill or downhill of a road surface.

  Embodiments of the present invention will be described with reference to the drawings. First, a vehicle provided with the opening / closing assisting device of this embodiment will be described with reference to FIG. In the figure, an opening 33 for getting on and off is provided on the side surface of the vehicle body 31, and this opening 33 is opened and closed by a slide door 37 movably engaged with a center rail 35 provided in the front-rear direction of the vehicle 31. It has become so.

  The opening / closing auxiliary device 41 provided on a surface substantially parallel to the side surface of the vehicle includes a main body 43, a drum 45 provided in the main body 43, and a wire 47 having an intermediate portion wound around the drum 45. . One end of the wire 47 is locked to the front end of the center rail 35, and the other end of the wire 47 is locked to the rear end of the center rail 35. Therefore, when the slide door 37 is moved forward of the vehicle body 31, the drum 45 rotates in one direction, and when the slide door 37 is moved rearward of the vehicle body 31, the drum 45 rotates in the other direction. ing.

  Next, the opening / closing auxiliary device 41 will be described with reference to FIGS. 1 is an exploded perspective view of the main body of the opening / closing auxiliary device, FIG. 2 is a cross-sectional view of the base in the middle direction (cut line AA in FIG. 1) in the thickness direction of the base, with the spiral spring removed from FIG. FIG. 4 is a perspective view of the first spring lever of FIG. 1, and FIG. 5 is a view of the housing of FIG.

  As shown in FIG. 1, the opening / closing auxiliary device 41 includes a base 51 as a case and a housing 101. A hole 53 is formed in the center of the base 51. An arm 57 is disposed on the outer surface of the base 51. And the hole 55 of the base end part side of the arm 57 and the hole 53 of the base 51 are arrange | positioned so that it may oppose. The hole 55 of the arm 57 and the hole 53 of the base 51 are rotatably engaged with a medium diameter part 59z and a small diameter part 59b of a shaft 59 including a large diameter part 59a, a medium diameter part 59z, and a small diameter part 59b. A slit 61 is formed at the tip of the shaft 59 on the large diameter portion 59a side, and a bent portion 65 on the inner end side of the spiral spring 63 is locked to the slit 61. A pin 67 extending in a direction away from the upper surface of the arm 57 and in a direction away from the lower surface is provided on the distal end side of the arm 57. A bent portion 69 on the outer end side of the spiral spring 63 is locked to a portion of the pin 67 that extends away from the upper surface of the arm 57. A portion of the pin 67 extending in a direction away from the lower surface of the arm 57 is inserted through an arc-shaped cutout hole 52 formed in the base 51 and protrudes into the base 51.

  On the inner peripheral surface of the base 51, a control lever 73 that constitutes an inclination detecting means and a gear 75 as a second gear on which external teeth are formed are arranged. Then, the control lever 73 and the gear 75 can be rotated with respect to the base 51 using a pin 80 attached to the base 51 through the hole 77 formed in the control lever 73 and the hole 79 formed in the gear 75. It has become. Two pins 88 are formed on the gear 75, and these pins 88 engage with holes 85 of the control lever 73 so that the gear 75 and the control lever 73 rotate together. The tip portion of the small diameter portion 59b of the shaft 59 protruding into the base 51 is an oval portion 59c having an oval cross-sectional shape.

  As shown in FIGS. 1 and 2, a first spring lever 81 and a second spring lever 91 are stacked on the inner surface of the central portion of the base 51. The first spring lever 81 has a long hole 83 into which the small diameter portion 59b of the shaft 59 is loosely fitted, and the second spring lever 91 has a small hole 93 into which the small portion 59c of the small diameter portion 59b of the shaft 59 is fitted. Yes. Accordingly, the second spring lever 91 rotates together with the shaft 59 on which the inner end portion of the spiral spring 63 is locked. The extending direction of the elongated hole 83 of the first spring lever 81 is the radial direction of a circle centered on the hole 53 of the base 51. The intermediate portion is locked to the bent portion 82 of the first spring lever 81, one end is locked to the hole of the first spring lever 81, and the other end is attached to the shaft 59. Due to the force, the first spring lever 81 is urged in a radial direction around the hole 53 of the base 51 and away from the shaft 59. Furthermore, a contact portion 84 that can contact a pin 67 extending into the base 51 is formed at the tip of the first spring lever 81. Therefore, the contact portion 84 of the first spring lever 81 is in contact with the pin 67 by the urging force of the torsion spring 86.

  As shown in FIG. 1, a drum 45, a gear plate 111, and the like are disposed in an internal space formed by the base 51 and the housing 101. As shown in FIGS. 1 and 3, a hole 121 is formed in the center of the drum 45, and a shaft 123 is inserted therethrough. An oval part 123 a having an oval cross-sectional shape is formed at the lower part of the shaft 123, and is fitted into the oval hole 103 at the bottom of the housing 101.

  A wire 47 is wound around the drum 45, and one end portion side of the wire 47 extends outside via the wire guide groove 101b of the housing 101, and the other end portion side extends outside via the wire guide groove 101c. ing. In addition, when the slide door 37 of this Embodiment is moved to an opening direction, the moving direction of the wire 47 at the time of moving to a closing direction is shown in FIG.

  The drum 45 is provided with a gear 131 having a hole 135 through which the medium diameter portion 123b of the shaft 123 is inserted. On the other hand, the drum 45 is formed with two arc-shaped holes 125 along the holes 121, and the arc-shaped protrusions 133 formed on the gear 131 are engaged with the two holes 125, and the drum 45 and the gear 45 are engaged. 131 rotates together with 131.

  An oval portion 123c is formed on the upper portion of the intermediate diameter portion 123b of the shaft 123 (the portion of the intermediate diameter portion 123b of the shaft 123 protruding from the hole 135 of the gear 131). The oval portion 123c has a base end portion of the arm 141. The side oval hole 143 is fitted and the arm 141 is fixed to the shaft 123. A gear 151 that meshes with the gear 131 is rotatably attached to the distal end side of the arm 141 using a pin 153 that engages with a hole 145 on the distal end side of the arm 141. The shaft 123 protruding from the hole 143 of the arm 141 passes through the hole 145 of the gear plate 111, and the gear plate 111 can rotate with respect to the shaft 123. An inner tooth 113 (not shown in FIG. 1) with which the gear 151 is engaged is formed on the inner surface of the gear plate 111. Therefore, a planetary gear mechanism is formed in which the gear 131 is a sun gear, the gear 151 is a planetary gear, and the gear plate 111 is an internal gear. That is, when the drum 45 rotates, the rotation is transmitted to the gear plate 111 via the gear 131 and the gear 151, and the gear plate 111 rotates. The shaft 123 protruding from the hole 145 of the gear plate 111 is inserted through the hole 163 of the plate 161 and is caulked.

  As shown in FIGS. 1 and 2, a protrusion 181 and a protrusion 183 are formed on the surface of the gear plate 111 facing the base 51. The protrusion 183 engages with an elongated hole 87 formed on the tip end side of the first spring lever 81, and the protrusion 181 can contact the second spring lever 91. That is, the gear plate 111 and the first spring lever 81 rotate together. In addition, the extending direction of the long hole 87 is the radial direction of the circle centering on the hole 53 of the base 51 as in the case of the long hole 83.

  On the other hand, an L-shaped projection 103a is formed on the outer bottom surface of the housing 101 adjacent to the oval hole 103 as shown in FIG. An elongated hole 173 formed in an intermediate portion of an arm 171 as an arm portion is fitted into the protrusion 103, and the arm 171 is rotatable with respect to the housing 103. A weight 175 is attached to one end portion of the arm 171, and a gear 177 as a first gear in which internal teeth meshing with the gear 75 exposed to the outside are attached to the other end portion. The weight 175, the arm 171, the gear 177, the gear 75, and the control lever 73 constitute an inclination detecting means for detecting a flat road surface, an uphill, and a downhill. The other opening / closing auxiliary device 41 constitutes auxiliary means. Further, the gear 177, the gear 75, and the control lever 73 constitute a transmission unit that transmits the movement of the arm 171 to the auxiliary means.

Next, the operation of the opening / closing auxiliary device 41 having the above-described configuration will be described with reference to FIGS.
(1) Flat ground When the vehicle is on a flat ground, the opening / closing auxiliary device 41 is in a state as shown in FIG. That is, the arm 171 of the inclination detecting means is perpendicular to the road surface. Further, the spiral spring 63 is set in a state where a predetermined amount is wound in advance. In such a state, one end portion side (second spring lever 91 side) of the control lever 73 is located away from the second spring lever 91 so as not to interfere with the second spring lever 91. Further, since the other end of the control lever 73 is also in a position not interfering with the first spring lever 81, the inner end of the spiral spring 63 and the outer end of the spiral spring 63 rotate together with the drum 45. The spiral spring 63 is connected to the gear plate 111 and rotates together with the drum 45.

  The second spring lever 91 connected to the inner end side of the spiral spring 63 is urged in the direction of arrow I by the elastic repulsive force on the inner end side of the spiral spring 83, and the second spring lever 91 is The projection 181 of the gear plate 111 that rotates together with the drum 45 is pushed in the direction of arrow I. On the other hand, the first spring lever 81 is urged in the arrow J direction opposite to the arrow I direction via the pin 67 of the arm 57 by the elastic repulsive force on the outer end side of the spiral spring 63, and the first spring lever 81 is The protrusion 183 of the gear plate 111 is pushed in the direction of arrow J. Since the elastic repulsive force on the inner end side of the spiral spring 83 and the elastic repulsive force on the outer end side of the spiral spring 63 in the opposite direction cancel each other, the gear plate 111 (drum 45) is connected to the spiral spring 63. It is not urged to rotate by the elastic repulsion force.

(2) Uphill (when auxiliary force is required to move the slide door 37 forward)
When the vehicle is on an uphill, the opening / closing auxiliary device 41 is in a state as shown in FIG. In the figure, a two-dot chain line indicates a state where the slide door is closed. When the vehicle is on an uphill, the arm 171 to which the weight 175 of the inclination detecting means is attached rotates, and the gear 177 rotates in the direction of arrow II in the drawing. The gear 75 that meshes with the gear 177 also rotates, the control lever 73 that rotates together with the gear 75 also rotates, one end side (second spring lever 91 side) is lowered, and the second spring lever 91 is controlled. It can come into contact with the lever 73. When the second spring lever 91 comes into contact with the control lever 73, the inner end side of the spiral spring 63 is separated from the drum 45 and fixed. On the other hand, the other end side (first spring lever 81 side) of the control lever 73 is in a position where it does not interfere with the first spring lever 81. In this embodiment, the vehicle is set to be in such a state when the vehicle is inclined by 1.5 ° or more.

  When the sliding door 37 is moved in the opening direction (rear of the vehicle), the drum 45 rotates in the direction of arrow III, and the gear plate is connected via the planetary gear mechanism including the gear 131, the gear 151, and the gear plate 111 (inner teeth 113). 111 rotates in the opposite direction to arrow III. As the gear plate 111 rotates, the first spring lever 81 having the elongated hole 87 with which the protrusion 183 engages also rotates in the direction opposite to the arrow III. Further, when the first spring lever 81 rotates, the pin 67 is pushed, and the arm 57 also rotates in the direction opposite to the arrow III direction. Due to the rotation of the arm 57, the outer end side of the spiral spring 63 is wound, and an elastic repulsion force is further accumulated in the spiral spring 63.

  When the slide door 37 is moved in the closing direction (front of the vehicle), the elastic repulsive force of the spiral spring 63 is applied to the drum 45 via the first spring lever 81, the protrusion 183, the gear plate 111, and the planetary gear mechanism. The slide door 37 is urged in the closing direction.

(3) Downhill (when assistance is required when moving the sliding door 37 backward)
When the vehicle is on a downhill, the opening / closing assisting device 41 is in a state as shown in FIG. In the figure, a two-dot chain line indicates a state where the slide door is closed. When the vehicle is on the downhill, the arm 171 to which the weight 175 of the inclination detecting means is attached rotates, and the gear 177 rotates in the direction of arrow IV in the drawing. The gear 75 that meshes with the gear 177 also rotates, the control lever 73 that rotates together with the gear 75 also rotates, the other end side (first spring lever 81 side) is lowered, and the tip of the first spring lever 81 is rotated. Press. As a result, the first spring lever 81 moves in the direction of the shaft 59 against the urging force of the torsion spring 86. By the movement of the first spring lever 81, the contact between the first spring lever 81 and the pin 67 is released, and the pin 67 of the arm 57 is indicated by a one-dot chain line by the elastic biasing force on the outer end side of the spiral spring 63. The end portion of the cutout hole 52 is brought into contact, and further movement is prohibited. That is, the outer end side of the spiral spring 63 is separated from the drum 45 and fixed. On the other hand, one end side of the control lever 73 is located away from the second spring lever 91 so as not to interfere with the second spring lever 91. In this embodiment, the vehicle is set to be in such a state when the vehicle is inclined by 1.5 ° or more.

  When the sliding door 37 is moved in the opening direction (rear of the vehicle), the elastic repulsive force on the inner end side of the spiral spring 63 that has been wound in advance is passed through the second spring lever 91, the protrusion 181, the gear plate 111, and the planetary gear mechanism. The slide door 37 is urged in the opening direction.

  When the sliding door 37 is moved in the closing direction (front of the vehicle), the gear plate 111 rotates in the direction of arrow III, and the inner end side of the spiral spring 63 via the protrusion 181 and the second spring lever 91. Involve.

According to such a configuration, the following effects can be obtained.
(1) The inclination detection means includes an arm 171 as an arm part rotatably provided on a plane substantially parallel to the side surface of the vehicle, a gear 177 as a transmission part that transmits the movement of the arm 171 to the auxiliary means, and a gear 75 and the control lever 73 make it possible to detect road surface flatness, uphill and downhill with a mechanical mechanism, and to operate auxiliary means with a mechanical mechanism.

Therefore, compared with the case where an electrical inclination sensor is used, a control device, a harness, a motor, and the like are unnecessary, and the cost can be reduced.
Furthermore, a reliable operation can be obtained by the control lever 73 rotating in one direction or the other direction according to the uphill or downhill of the road surface.
(2) The slide door 37 is urged rearward by the elastic repulsive force on the inner end side of the spiral spring 63, and the slide door 37 is urged forward by the elastic repulsive force on the outer end side of the spiral spring 63. As a result, the urging means is only one spiral spring, so the cost can be reduced.

  Furthermore, although the opening / closing auxiliary device 41 is provided in the slide door 37, it may be provided on the vehicle body 31 side.

It is a disassembled perspective view of the main body of an opening / closing auxiliary | assistance apparatus. FIG. 2 is a cross-sectional view taken along line AA in FIG. 1 with the spiral spring removed. FIG. 3 is a diagram in which a gear plate is removed from FIG. 2. It is a perspective view of the 1st spring lever of FIG. It is the figure which looked at the housing of FIG. 1 from the arrow B direction. It is operation | movement explanatory drawing of the opening / closing auxiliary | assistance apparatus of FIG. 1 in the case of a flat ground. It is operation | movement explanatory drawing of the opening / closing auxiliary | assistance apparatus of FIG. 1 in the case of a downhill. It is operation | movement explanatory drawing of the opening / closing auxiliary | assistance apparatus of FIG. 1 in the case of an uphill. It is explanatory drawing of the vehicle provided with the opening / closing auxiliary | assistance apparatus of the example. It is explanatory drawing of the vehicle which has a sliding door. It is a figure explaining the problem of the vehicle of FIG.

Explanation of symbols

37 sliding door 63 spiral spring 73 control lever 75 gear 81 first spring lever 91 second spring lever 45 drum 171 arm 177 gear

Claims (2)

Inclination detection means for detecting road surface flatness, uphill, downhill,
Depending on the detection result of the detection means, in the case of the uphill, the slide door is urged forward when moving the slide door forward of the vehicle body, and in the case of the downhill, the slide door is An auxiliary means for urging the sliding door backward when the vehicle body is moved backward;
In a sliding door opening and closing auxiliary device having
The inclination detecting means includes
An arm portion that is rotatably provided on a plane substantially parallel to the side surface of the vehicle, and that rotates in opposite directions on the uphill and downhill,
A transmission part for transmitting the movement of the arm part to the auxiliary means;
Consists of
The auxiliary means includes
A drum that rotates forward / reverse in conjunction with the forward / backward movement of the vehicle body of the sliding door;
A biasing means capable of biasing the drum in the forward direction and the reverse direction;
The biasing means is capable of rotating in conjunction with the rotation of the drum, can be engaged with and disengaged from one end side of the biasing means, can contact the transmitting portion, and biases the drum in the forward rotation direction. A first spring lever capable of transmitting a force to the drum;
The urging force of the urging means that can rotate in conjunction with the rotation of the drum, engages with the other end side of the urging means, can contact the transmission portion, and urges the drum in the reverse rotation direction. A second spring lever capable of transmitting to the drum;
Consists of
When the road surface is uphill, the rotation of the arm portion causes the transmission portion to abut against the second spring lever to fix the other end side of the biasing means, and one end side of the biasing means is the first spring. Urging the sliding door forward through the lever and the drum;
When the road surface is a downhill, the transmission portion comes into contact with the first spring lever by rotation of the arm portion to fix one end side of the urging means, and the other end side of the urging means is the second spring. A sliding door opening / closing assisting device for biasing the sliding door rearward through a lever and the drum . The transmission part of the tilt detection means is
A first gear provided at a place other than the rotation center of the arm;
A second gear rotatably provided on the auxiliary means side and meshing with the first gear;
A control lever provided on the second gear for transmitting the movement of the arm portion to the first spring lever and the second spring lever of the auxiliary means;
The sliding door opening / closing assisting device according to claim 1, comprising:

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