JP2008174982A - Opening-closing mechanism - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a door opening-closing mechanism capable of easily attaching and detaching a checker mechanism without using a screw or the like. <P>SOLUTION: This door opening-closing mechanism has a female 100 having an inside space, a male 200 rotatably arranged in the inside space of the female 100, and a case assembly 300 arranged in the male 200, capable of freely rotating the male 200 to the female 100 and controlling rotational torque of holding a rotational position in a predetermined angle range. The case assembly 300 has ball plates 310 and 350 fitted to a locking piece 302 and arranging a plurality of checker balls 55 in an annular ring shape, groove plates 320 and 340 carving an annular ring-shaped groove on one surface to be fitted with the ball plates 310 and 350, and a spring 330 sandwiched between the groove plates 320 and 340 and pressing the groove plates to the ball plates via the plurality of checker balls 55. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an opening / closing mechanism that is connected to an opening / closing door and controls the opening / closing torque of the door so as to hold the door at a predetermined opening position. The present invention relates to an opening / closing mechanism having a door checker function for controlling the movement.

  In general, as shown in FIG. 7, a door opening / closing mechanism for an automobile uses a pair of hinges 30 that support the door 20 so as to be freely opened and closed with respect to the body 10 of the automobile, and sliding resistance. The door checker 40 holds the door at a predetermined opening unless an opening / closing operation force is applied. The door checker 40 maintains a half-opened state on, for example, a slope, by maintaining the door opened halfway.

In addition, as a document in which the technology related to the door checker is described, for example, the following patent document can be cited. This document includes a stepless door opening holding mechanism and a stepped door opening holding machine that hold the door in a stepless manner. Is described in parallel between a vehicle body and a door.
JP 2006-169888 A

  The door opening and closing mechanism according to the above-described prior art has a separate hinge and a door checker that regulates the opening and closing state of the door so that the number of parts is large and the assembly work of each part is complicated. There was a defect that there was. In particular, the door checker described in the above literature has a problem that the structure is complicated, the number of parts is large, and the assembling work of each part is complicated because it is a mechanism that holds the door open / closed state in stages.

  An object of the present invention is to provide a door opening / closing mechanism capable of easily attaching and detaching a checker mechanism without using a screw or the like.

  In order to achieve the above object, an opening / closing mechanism according to the present invention includes a first member having an internal space, a second member rotatably disposed in the internal space of the first member, and the second member having the internal space, Arranged in the internal space of the two members, the second member is rotatably held with respect to the first member, and the rotation torque for holding the rotation position of the first member and the second member at a predetermined angle is controlled. And a pair of locking pieces, one end of which is locked to the third member, the other end of which is locked to the first member, and rotatably penetrates the second member. First feature.

  In the opening / closing mechanism of the present invention, the third member includes a pair of ball plates in which one surface is fitted with the pair of locking pieces and a plurality of checker balls are arranged in an annular shape on the other surface; An annular groove into which the pair of ball plates are fitted is arranged between a pair of groove plates engraved on one surface and the other surface of the pair of groove plates, and the groove plate is interposed between a plurality of checker balls. And a spring that presses against the ball plate, and in the opening / closing mechanism of any one of the above features, the third member is formed of the first member and the second member through which the locking piece penetrates. According to a third feature of the present invention, the attachment / detachment structure that is detachable from the internal space is provided. In the opening / closing mechanism of the third feature, the engagement that is engaged with the first member and protrudes into the internal space of the second member. Piece, outer periphery of the locking piece and unrotatable The detachable structure is formed from a ball plate having a fitting groove on one side, and a third member is detachable from the inner space of the first member by fitting or detaching a locking piece from the groove of the ball plate. The fourth feature is that it is configured as described above.

  Further, according to the fifth feature of the present invention, in the opening / closing mechanism of the fourth feature, the groove provided on one surface of the ball plate has an inclined surface that compresses the spring as the locking piece is inserted. In the opening / closing mechanism according to any one of the second to fifth features, the annular groove of the groove plate includes a plurality of hemispherical grooves engraved in a semicircular shape having a depth that restricts movement of the checker ball. In the opening and closing mechanism according to any one of the second to sixth features, a sixth feature is that the turning torque is controlled so as to maintain a turning position of the first member and the second member at a predetermined angle. The seventh feature is that a plurality of annular grooves of the groove plate are concentrically formed.

  According to the present invention, in the opening / closing mechanism according to any one of the second to seventh features, the third member includes a plurality of checkers sandwiched between the pair of ball plates, the pair of groove plates, and the ball plates and the groove plates. According to an eighth feature of the present invention, a box-shaped case that houses a ball and a spring is provided. In the opening and closing mechanism of the seventh feature, the first member comes into contact with the second member to rotate. In the opening / closing mechanism of any one of the above features, the first member is fixed to the vehicle body, and the second member is fixed to the vehicle door. The ninth member controls the rotation torque that holds the second member rotatably on the first member and holds the rotation position of the first member and the second member at a predetermined angle. It is characterized by.

  In the opening / closing mechanism according to the present invention, the third member can rotate the second member disposed in the internal space of the first member via a pair of locking pieces, and the first member and the second member are predetermined. A door opening / closing mechanism that can be easily assembled can be provided by controlling the rotational torque that holds the rotational position of the angle. That is, the door opening / closing mechanism according to the present invention can attach and detach the third member having the checker function without using a screw or the like, and particularly when applied to an automobile, the manufacturing process of the automobile can be shortened and the cost can be reduced. it can.

  Furthermore, the opening / closing mechanism according to the present invention comprises a third member comprising a pair of ball plates, a groove plate, and a spring that presses the groove plate against the ball plate via a plurality of checker balls, whereby the third member is The second member can be rotatably held with respect to one member, and is engaged with the first member and protrudes into the internal space of the second member, and the outer periphery of the engagement piece and the rotation The first member and the second member can be made detachable by configuring the detachable structure from a ball plate having a groove that cannot be fitted, and the present invention further provides an annular groove of the groove plate. However, by providing a plurality of hemispherical grooves engraved in a semicircular shape with a depth that restricts the movement of the checker ball, the rotational torque that maintains the open state of the first member and the second member at a predetermined angle Can be controlled.

  In the opening / closing mechanism according to the present invention, a plurality of annular grooves of the groove plate are formed concentrically so that the groove plate and the ball plate are brought into contact with each other by a plurality of checker balls arranged in a double ring shape. The third member is provided with a protrusion that abuts a box-shaped case that houses the ball plate, the pair of groove plates, and the spring. The rotation range of the second member can be limited within a predetermined angle, and the door opening and closing for an automobile door including a checker mechanism can be easily assembled by applying this mechanism to an automobile body and an automobile door. A mechanism can be provided.

  Hereinafter, a door opening and closing mechanism according to the present invention will be described in detail with reference to the drawings. FIG. 1 is a diagram for explaining a schematic structure of a door opening / closing mechanism having a door checker function according to this embodiment, FIG. 2 is an exploded view of the door opening / closing mechanism according to this embodiment, and FIG. 3 is a case assembly according to this embodiment. FIG. 4 is a diagram for explaining a disk of the door opening / closing mechanism according to the present embodiment, FIG. 5 is a diagram for explaining an upper groove plate according to the present embodiment, and FIG. 6 is a diagram for explaining the assembly process of FIG. It is a figure for demonstrating the door checker function by embodiment.

  First, the door opening / closing mechanism according to the present embodiment has been provided with a hinge and a door checker that are separately supported so that the door is pivotable, whereas the hinge mechanism that pivotally supports the door. And a door checker mechanism that keeps the door open at a predetermined angle as a single mechanism, and the door can be easily attached to and detached from the vehicle body of the automobile, making assembly easy.

<Overall structure>
As shown in FIG. 1, the schematic configuration of the door opening / closing mechanism includes, for example, a generally U-shaped female 100 fixed to a vehicle body of an automobile by screws or the like, and an internal space of the generally U-shaped female 100. And a mail 200 provided with a mounting piece 202 that is pivotally attached to the female 100 and extends vertically, and a mail 100 that is fitted and fixed in the mail 200. The case 200 includes a case assembly 300 that rotatably and detachably holds the case 200. For example, when applied to an automobile door, the female 100 is fixed to the body of the automobile and the mail 200 is attached to the door. By incorporating the case assembly 300 into the mail 200 with the mail 200 fitted in the U-shaped recess of the female 100, Body fitted with a door easily, and is configured to write 200 in the direction of arrow A in the drawing example, as can maintain a reciprocating rotatable and opened at a predetermined angle. The female 100 according to the present embodiment corresponds to the first member in the claims, the mail 200 corresponds to the second member, and the case assembly 300 corresponds to the third member. .

<Fmail 100>
As shown in FIG. 2 showing the disassembled and assembled state, the female 100 of the door opening / closing mechanism includes a mounting piece 102 having two screw holes 102a for fixing to the vehicle body, a right angle with the mounting piece 102, A pair of bent pieces 101 having openings 101a and 101b into which ends of engaging pieces 302a and 302b of a case assembly 300 to be described later are fitted, and the mounting piece 102 and the pair of bent pieces are formed. A mail 200 is rotatably fitted in a U-shaped internal space formed by 101 and is configured to be easily removed as indicated by an arrow B. In the case of the door opening / closing mechanism for automobiles according to the present embodiment, since the opening / closing angle of the door is limited to 80 degrees, a protrusion for limiting the rotation angle of the mail 200 described later is provided on the side surface of the female 100. It may be provided.

<Mail 200>
The mail 200 includes a pair of bent pieces 201 that are bent to a size that can be inserted into the U-shaped inner space of the female 100 and that have screw holes 201a and 201b opened, and the pair of bent pieces. A connecting piece 203 that connects 201, and an attachment piece 202 that is bent in the vertical direction from the ends of the pair of bent pieces 201 and that has screw holes 202a and 202b that are attached to movable parts such as doors. Composed.

<Case assembly 300>
The case assembly 300 is configured to attach the mail 200 to the female 100 so as to be rotatable and detachable. The case assembly 300 has a box-like case 301 having an opening on one side and a circular opening 301a on the upper and lower surfaces. And upper and lower ball plates 310, which are incorporated in the case 301, and are fitted with a plurality of checker balls 55, which will be described later, and locking pieces 302a and 302b for attaching the female 100 and the mail 200 in a rotatable and detachable manner. 350, an upper groove plate 320 and a lower groove plate 340 pressed against the upper and lower ball plates 310 and 350 via the checker ball 55, and a position between the upper and lower groove plates 320 and 340 to apply a restoring force in the vertical direction in the figure. And a helical spring 330 that is energized. Note that the case assembly 300 according to the present embodiment is preferably provided with a lid so that the upper and lower groove plates / upper and lower ball plates / springs and other components housed therein do not come out.

  The case assembly 300 houses a compressed spring 330 in a substantially box-shaped case 301, and the upper and lower groove plates 320 and 340 and the upper and lower ball plates 310 and 350 are separated in the vertical direction by the restoring force of the spring 330. One end of the engagement pieces 302a and 302b fitted to the upper and lower ends of the upper and lower ball plates 310 and 350 by this pressing force penetrates the screw holes 201ab and 202ab opened in the mail 200, and the female 100 The mail 200 can be attached to the female 100 by fitting the openings 101a and 101b in a non-rotatable manner.

  The case assembly 300 allows relative rotation of the upper and lower ball plates 310 and 350 and the upper and lower groove plates 320 and 340 via the plurality of checker balls 55, thereby allowing the female 100 to receive mail. 200 can be rotatably held.

  The upper and lower ball plates 310 and 350 of the case assembly 300 according to the present embodiment are provided with engaging portions 311 and 351 each having a groove in a shape that fits with one end of the engaging piece so as not to rotate. A hemispherical groove for rotatably fitting the checker ball 55 is opened on the other surface. For example, the other surface of the disc 352 of the lower ball plate is shown in FIGS. As described above, a hemispherical groove 58 engraved to a depth that accommodates approximately half of the eight checkerballs 55 is provided, and the checkerball 55 is rotatably fitted in the hemispherical groove 58. Further, the engaging portions 311 and 351 are provided with a groove into which a square piece provided at the other end of the engaging pieces 302a and 302b is inserted, and this groove is provided at the other end of the engaging pieces 302a and 302b. An inclined surface is provided for compressing the spring 330 and energizing the restoring force in the vertical direction as it is inserted. Note that the upper and lower ball plates 310 and 350 according to the present embodiment have the spring 300 when the case assembly 300 is mounted in the inner space of the female 100 and the mail 200 by the inclined surfaces provided in the grooves of the engaging portions 311 and 351. Although an example of compression has been described, the present invention is not limited to this. For example, the case assembly 300 may be provided with a mechanism for compressing the spring 330 and the case 330 while compressing the spring 330 with another guide mechanism. You may comprise so that it may insert in.

  The eight hemispherical grooves 58 in the present embodiment are arranged in two concentric circles on the outer ring side and the inner ring side so as to be orthogonal to each other in four steps with two steps, and checker balls 55 are placed in the eight hemispherical grooves. Is fitted in the groove so as to be rotatable. When four hemispherical grooves are provided so as to pass through the central axis of the disk 352 and arranged so as to be orthogonal to each other, the diameter of the disk 352 is In order to prevent from becoming large from the point of strength, it arrange | positions with a level | step difference. Further, the door opening / closing mechanism according to the present embodiment is formed by concentrically engraved annular grooves of the upper and lower groove plates into two rings, so that a plurality of checker balls arranged in a double ring form a groove plate and a ball plate. , And the pressing force between them can be increased.

The upper and lower groove plates 320 and 340 are engraved with two annular ring grooves for fitting eight checker balls fitted in the hemispherical grooves of the disk and hemispherical grooves provided in the ring grooves. and, for example, upper groove plate 320, FIG. 5 as (a), the outer annular groove consisting of annularly arranged a ring groove ₅₁ a1 _{to 51 a8} and hemispheric grooves ₅₃ a1 _{to 53 a8} Prefecture, similar annular groove in the inner consisting arranged ring groove ₅₁ b1 _{to 51 b8} and hemispheric grooves ₅₃ b1 _{to 53 b8} Metropolitan is engraved on. These grooves are formed so that the hemispherical grooves 53 _a1 / 53 _a3 / 53 _a5 / 53 _a7 are fitted to the lower half of the checker ball 55 as shown in FIG. 5 (b) showing the ZZ cross section in FIG. A semicircular concave shape is formed, and the ring grooves 51 _a1 / 51 _a3 / 51 _a5 / 51 _a7 following this form a groove shape in which the depth gradually increases, and the subsequent hemispherical grooves 53 _a2 / 53 _a4 / 53 _a6 / 53 _a8 has a groove shape engraved in a fan shape so as to prevent the movement of the checker ball 55, and the ring groove 51 _a2 / 51 _a4 / 51 _a6 / 51 _a8 following this is parallel to the plate surface It has a groove shape engraved on the surface.

As described above, the door opening / closing mechanism according to the present embodiment is such that the checker balls fitted in the upper and lower ball plates 310 and 350 move while rotating in the ring grooves and hemispherical grooves arranged in the annular shape of the upper and lower groove plates. The mail 200 can be rotatably supported with respect to the female 100. Specifically, for example, the checker balls 55 held in the grooves of the disc 352 are arranged as checker balls 55 _{a1 to} 55 _a4 and 55 _{b1 to} 55 _{b4 with} a space as shown in FIG. from a state where there, checker ball _{55 a1} hemispherical grooves _{53 a1} to / checker ball _{55 a2} is a hemispherical groove _{53 a3} / checker ball _{55 a3} is a hemispherical groove _{53 a5} / checker ball _{55 a4} moves in a hemispherical groove _{53 a7,} Similarly, the checker balls 55 _{b1 to} 55 _b4 are also moved to the next hemispherical groove, whereby the mail 200 is rotated and held with respect to the female 100 by a predetermined angle (45 degrees or less), and further rotated to the next hemispherical groove. The mail 200 is further rotated by being moved to and fitted. This rotation can be rotated 360 degrees or more if only the upper and lower ball plates and the groove plate are used, but in the present embodiment, it is configured to be rotatable within, for example, 80 degrees for an automobile door.

The ring grooves 51 _a1 / 51 _a3 / 51 _a5 / 51 _a7 are grooves through which the checker balls 55 pass from the fully opened state until the doors are tightened to 40 degrees. As shown in FIG. In order to reduce the depth, the depth of the groove increases in the clockwise direction in the figure, and the hemispherical groove 53 _a2 / 53 _a4 / 53 _a6 / 53 _a8 following this ring groove is shown in FIG. ) Is deeply engraved to achieve a checker function that temporarily prevents rotation and maintains the door position.

<Assembly of case assembly 300>
In the case assembly 300 configured as described above, the checker ball 55 is fitted in the hemispherical groove 58 of the disc 352 as shown in FIG. 3A, and the checker ball 55 is turned upward as shown in FIG. 3B. In this state, the upper groove plate 320 is assembled from above so that the checker ball 55 fits into the groove, and the engaging portions 311 and 351 of the disks 312 and 352 are inserted into the upper and lower circular openings 301a of the case 301 as shown in FIG. Can be assembled by inserting a compressed spring 330 between the upper and lower groove plates 320 and 340.

<Assembly-Operation>
As described above, in the door opening / closing mechanism according to the present embodiment, the engagement pieces 302a and 302b having the same shape as the grooves are fitted in the grooves of the upper and lower engagement portions 311 and 351 of the case assembly 300 shown in FIG. In addition, the upper ends of the engagement pieces 302a and 302b protruding from the case assembly 300 with the spring 330 compressed are fitted into the openings 101a and 101b of the female 100 through the screw holes 201a and 201b of the male 200. Can be assembled.

  An example in which the door opening and closing mechanism according to the present embodiment is applied to an automobile will be described. For example, a step of aligning holes (opening 101a and screw hole 201a, opening 101b and screw hole 201b) of female 100 and mail 200; The step of inserting the engaging pieces 302a and 302b into the upper and lower holes after the alignment, and caulking the portions protruding vertically from the openings 101a and 101b of the inserted engaging pieces 302a and 302b A step of rotatably connecting the female 100 and the mail 200, a step of attaching the combined mail 200 to the door using the screw hole 202a, and a screw hole 102a of the female 100 of the opening / closing mechanism to which the door is attached. 7 using the step of attaching to the column of the vehicle body body of FIG. The case 200 is inserted into the case 200 to complete the opening / closing mechanism, whereby the engaging portions 311 and 351 of the case assembly 300 urge the engaging pieces 302a and 302b in the vertical direction with a spring restoring force. In this state, the door can be attached to the vehicle body. Therefore, the door opening / closing structure according to the present embodiment firmly presses the engagement pieces 302a and 302b attached to the opening of the female 100 through the mail 200 by the spring restoring force, and firmly connects these. Can be.

In the door mounting structure according to the present embodiment, the upper and lower ball plates 310 and 350 in the case assembly 300 are rotated relative to the inner upper and lower groove plates 320 and 340 by the rotation of the checker ball 55. In addition, the checker ball 55 is fitted in the hemispherical grooves 53 _{a1 to} 53 _a8 and 53 _{a1 to} 53 _b8 provided in an annular space in the upper and lower groove plates 320 and 340 to temporarily hold the rotation. Since the (latch) function is achieved, when applied to an automobile, the door can be rotated with respect to the vehicle body and the door can be opened at a predetermined angle.

  In addition, the door mounting structure according to the present embodiment facilitates the mounting operation of the automobile door and the checker mechanism by detachably configuring the case assembly 300 from the body 100 on the vehicle body side and the mail 200 on the door side. Can do. The door opening / closing mechanism according to the present embodiment can also be applied to a mechanism that automatically closes and locks the door by a motor when the door is substantially closed to the vehicle body.

  In the embodiment, as an example of the third member (a case assembly which is a checker mechanism), a checker ball that rotates, a plate having a groove for guiding the ball, and the like are provided, and the rotation of the mail with respect to the mail and a predetermined angle. Although the mechanism for controlling the rotational torque that holds the rotational position of the third member has been described, the internal mechanism of the third member according to the present invention is not limited to this, for example, a circle that rotates on the unevenness arranged linearly. The checker mechanism (case assembly) is configured by another mechanism such as a crank mechanism that controls the rotation of the mail with respect to the mail and the rotation torque that holds the rotation position of a predetermined angle as the plate portion moves. The checker mechanism may be configured to be detachable.

  Further, the inventor of the present application has invented a novel checker mechanism, and this checker mechanism has a pair of ball plates in which a plurality of checker balls are arranged in an annular shape on one surface, and the pair of ball plates are fitted together. A pair of groove plates each having an annular groove carved on one surface, and a spring disposed between the other surfaces of the pair of groove plates and pressing the groove plate against the ball plate via a plurality of checker balls. The pair of ball plates and the groove plate can be expressed as a checker mechanism that controls a rotation torque that is relatively rotatable and holds a rotation position of a predetermined angle.

  In the above-described embodiment, an example in which the door opening / closing mechanism according to the present invention is applied to a door opening / closing mechanism of an automobile has been described. However, the present invention is not limited to this, for example, a hinge of a residential door or a door / heavy door / It can be applied to any hinge mechanism that opens and closes a door / lid or the like.

The figure for demonstrating the schematic structure of the door opening and closing mechanism by one Embodiment of this invention. The exploded assembly figure of the door opening and closing mechanism by this embodiment. The figure for demonstrating the assembly process of the case assembly by this embodiment. The figure for demonstrating the disk of the door checker by this embodiment. The figure for demonstrating the upper groove plate by this embodiment. The figure for demonstrating the door checker function by this embodiment. The figure for demonstrating the door checker by a prior art.

Explanation of symbols

10: vehicle body Body, 20: door, 30: hinge, 40: door _checker, 51 a1 _{to 51 a8:} ring _groove, 53 a1 _{to 53 a8:} hemispheric _groove, 51 a1 _{to 51 a8:} ring _groove, 51 b1 _{to 51 b8} : ring _{groove, 53} a1 _{~53 a8:} hemisphere _{groove, 53} b1 _{~53 b8:} hemisphere _{groove, 55} a1 _{~55 a4:} checker _{ball, 55} b1 _{~55 b4:} checker ball, 58: hemisphere groove, 100: Female, 101: bent piece, 102: mounting piece, 102a: screw hole, 200: mail, 201: bent piece, 201a: screw hole, 202: mounting piece, 202a: screw hole, 203: connecting piece, 300: case set Solid: 301: Case, 302a: Engagement piece, 310: Upper ball plate, 311: Engagement part, 312: Disc, 320: Upper groove plate, 330: Spring, 3 0: the lower groove plate, 352: disk.

Claims (10)

  A first member having an internal space, a second member having an internal space, rotatably disposed in the internal space of the first member, and an internal space of the second member; On the other hand, the second member is rotatably held and a third member for controlling a turning torque for holding a turning position of the first member and the second member at a predetermined angle, and one end of the third member is engaged with the third member. An opening / closing mechanism comprising a pair of locking pieces which are stopped and whose other ends are locked to the first member and which rotate through the second member.   The third member has a pair of ball plates in which one surface is fitted with the pair of locking pieces and a plurality of checker balls are arranged in an annular shape on the other surface, and an annular shape in which the pair of ball plates are fitted. A pair of groove plates each having a groove engraved on one surface, and a spring disposed between the other surfaces of the pair of groove plates and pressing the groove plate against the ball plate via a plurality of checker balls. Item 2. The opening / closing mechanism according to item 1.   3. The opening / closing mechanism according to claim 1, wherein the third member includes an attachment / detachment structure that is detachable from the internal space of the first member and the second member through which the locking piece penetrates.   The attachment / detachment structure includes the engagement piece that is engaged with the first member and protrudes into the internal space of the second member, and a ball plate that has a groove that fits the outer periphery of the engagement piece in a non-rotatable manner. The opening / closing mechanism according to claim 3, wherein the third member is configured to be detachable from the internal space of the first member by forming an engagement piece and engaging or disengaging a locking piece with the groove of the ball plate.   The opening / closing mechanism according to claim 4, wherein a groove provided on one surface of the ball plate includes an inclined surface that compresses the spring as the locking piece is inserted.   The annular groove of the groove plate has a plurality of hemispherical grooves engraved in a semicircular shape with a depth that restricts the movement of the checker ball, so that the first member and the second member can rotate at a predetermined angle. The opening / closing mechanism according to any one of claims 2 to 5, which controls a rotational torque for maintaining a moving position.   The opening / closing mechanism according to any one of claims 2 to 6, wherein a plurality of annular grooves of the groove plate are concentrically formed.   The said 3rd member is provided with the box-shaped case which accommodates the several checker ball clamped between the said pair of ball | bowl plate, a pair of groove | channel plate, this ball | bowl plate, and a groove | channel plate, and a spring. The opening / closing mechanism according to any one of the above.   The opening / closing mechanism according to claim 8, wherein the first member includes a protrusion that limits a rotation range within a predetermined angle by contacting the second member.   The first member is fixed to the vehicle body, the second member is fixed to the vehicle door, the third member rotatably holds the second member on the first member, and the first member and the second member. The opening / closing mechanism for an automobile door according to any one of claims 1 to 9, which controls a turning torque for holding a turning position of a predetermined angle of the member.

Images