JP2010241283A - Opening/closing mechanism for opening/closing body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To attain enhancement of opening/closing operability of a hood, to retain the hood at an optional opened position, and to enhance workability in an engine room. <P>SOLUTION: The opening/closing mechanism for the opening/closing body includes: a hinge bracket 11 fixed to a vehicle body side; a hinge arm 12 fixed to the hood 3 for covering the engine room 21; and a hinge pin 13 for attaching the hinge arm to the hinge bracket. The opening/closing mechanism further includes a rotation body 14 attached to the hinge pin so as to be interlocked with rocking motion of the hinge arm; a ratchet gear part 14a formed on a peripheral edge of the rotation body; a ratchet claw 15 turnably installed relative to the hinge bracket, engaged with the ratchet gear part when it is rotated in one direction and removed from the ratchet gear part when it is rotated in the opposite direction of the one direction; and an operation lever connected to the ratchet claw and turning/operating the ratchet claw. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an opening / closing mechanism for an opening / closing body, and more particularly to an opening / closing mechanism for an opening / closing body that opens and closes an opening / closing body with respect to an opening of a vehicle body and holds the opening / closing body at a predetermined open position.

  Conventionally, as shown in FIG. 7A, one end 52a can swing into the engine room 50 as an opening / closing mechanism for an opening / closing body that can be freely opened and closed with respect to the engine room opened in the front part of the automobile. There is known a stay support type by a stay 52 that is attached to the other end 52b and has a shape in which the other end 52b can be inserted into and inserted into an insertion hole 50a provided in the hood 51 (see, for example, Patent Document 1). ).

  In the stay support type, when the hood 51 closes the engine room 50, the stay 52 is stored in the engine room 50 with the stay 52 tilted, and the other end 52b of the stay 52 is hooked (not shown). It is caught. Further, when checking or servicing each part in the engine room 50 with this stay support type, the other end 52b of the stay 52 is supported with the other end 52b of the stay 52 opened with one hand up to a predetermined opening degree. The hood 51 can be held in its open position by removing it from the hook in the engine room 50 with the hand and lifting it into the insertion hole 50a of the hood 51.

  As an opening / closing mechanism of the opening / closing body, as shown in FIG. 7B, one end 53a is swingably attached to the engine room 50, and the other end 53b is swingably attached to the hood 51. A damper stay support type by a damper stay 53 is known (for example, see Patent Document 1).

  This damper stay support type is stored in the engine room 50 with the damper stay 53 tilted when the hood 51 closes the engine room 50, and when the hood 51 is opened to a predetermined opening degree. The hood 51 can be held in its open position by the reaction force of the damper stay 53.

  The open / close mechanism of each of the stay support type and damper stay support type open / close members is shown in FIG. 7 (A) and FIG. 7 (B) together with the stay 52 and the damper stay 53. A hood 51 is attached to the engine room 50 by a hinge mechanism 54 as shown in FIG. The hinge mechanism 54 includes a hinge arm 55 to which the hood 51 is fixed, a hinge bracket 56 fixed to the vehicle body side, and a hinge pin 57 that rotatably fixes the hinge arm 55 to the hinge bracket 56.

JP 2008-230329 A Japanese Patent Laying-Open No. 2005-22502

  However, in the opening / closing mechanism of each opening / closing body described in the background art, since the hinge mechanism 54 must be provided together with the stay 52 and the damper stay 53, there is a problem in that the layout is restricted as the cost increases and the weight increases. Further, in these opening / closing mechanisms of the opening / closing body, the stay 52 and the damper stay 53 must be attached to the position of the front part of the automobile so that the hood 51 can be held in a state where the hood 51 is opened to a predetermined opening. There is a difficulty that workability is deteriorated because it becomes an obstacle when checking and servicing each part in 50. Further, in the opening / closing mechanism of these opening / closing bodies, the opening of the hood 51 is determined by the length of the stay 52 and the damper stay 53, so that an operator with a short height opens the hood 51 while supporting the tip of the hood 51. In some cases, the tip of the hood 51 could not be supported up to a predetermined opening. Further, in the opening / closing mechanism of the stay support type opening / closing body, in the opening / closing operation of the hood 51, the hood 51 is lifted by one hand, and the stay 52 is moved by the other hand with the insertion hole 50a of the hood 51 and the engine room 50. There was a problem that an unstable operation of moving between hooks had to be performed.

  The present invention has been made to solve such a conventional problem, and can improve the operability of opening and closing of the hood and can hold the hood at an arbitrary open position. An object of the present invention is to provide an opening / closing mechanism for an opening / closing body that can be improved.

  The opening / closing mechanism of the opening / closing body according to the first aspect of the present invention that achieves the above-described object includes a hinge bracket fixed to the vehicle body side and a hinge arm fixed to the opening / closing body for covering an opening portion opened to the vehicle body. A hinge pin for attaching the hinge arm to the hinge bracket, and an opening / closing mechanism for the opening / closing body that opens and closes the opening / closing body with respect to the opening of the vehicle body by swinging the hinge arm around the hinge pin. When the rotating body mounted on the hinge pin so as to be linked to the swinging motion of the hinge arm, the ratchet gear portion formed on the periphery of the rotating body, and the hinge bracket can be rotated and rotated in one direction. A ratchet pawl that engages with the ratchet gear and rotates away from the ratchet gear when rotated in the opposite direction, and the ratchet pawl connected to the ratchet pawl. The ratchet gear part is locked by the ratchet pawl when the opening / closing body is opened to a predetermined position, and the rotating body rotates so that the opening / closing body does not move in the closing direction from the open position. It is a shape to stop. In the present specification, “rotation” means circular movement in forward and reverse directions. Further, in this specification, “locking” means to stop by engaging with each other.

  According to the opening / closing mechanism of the opening / closing body according to the first aspect, the hinge arm fixed to the opening / closing body when the opening / closing body opens from the closed state so as to cover the opening of the vehicle body to a predetermined position. At the same time, when the rotating body is linked, the rotating body rotates about the hinge pin as a rotation axis, so that the ratchet gear portion of the rotating body is locked to the ratchet pawl, so that the opening / closing body moves from its open position to the closing direction. The rotation of the rotating body can be stopped so as not to occur. In addition, when shifting the opening / closing body from the open position to the predetermined position so as to cover the opening of the vehicle body, the latched state between the ratchet gear portion and the ratchet pawl is released with the opening / closing body lifted. Thus, the ratchet pawl can be detached from the ratchet gear portion simply by rotating the operation lever, so that the rotating body can be rotated in the closing direction so that the opening / closing body covers the opening of the vehicle body.

  According to a second aspect of the present invention, in the opening / closing mechanism for the opening / closing body according to the first aspect, the ratchet claw is elastically repelled in one direction. According to such an opening / closing mechanism of the opening / closing body according to the second aspect, when the operation lever is not rotated, the ratchet pawl can be always locked to the ratchet gear portion by the elastic force of the elastic means. It is possible to prevent the ratchet pawl from being detached from the ratchet gear portion due to vibration or the like.

  According to a third aspect of the present invention, in the opening / closing mechanism of the opening / closing body according to the second aspect, the elastic means includes a rotation shaft that protrudes from the hinge bracket and serves as a rotation center of the ratchet pawl, and an inner end portion that rotates. A spiral spring is provided which is coupled to a dynamic shaft and has an outer end coupled to a hinge bracket to act on a bending stress. In this specification, “protruding” means providing in a protruding state. According to the opening / closing mechanism of the opening / closing body according to the third aspect, it is possible to store a large amount of energy due to repulsion in a narrow space.

  According to a fourth aspect of the present invention, in the opening / closing mechanism of the opening / closing body according to the second or third aspect, the operation lever rotates the ratchet claw via a cable movably attached to the back side of the opening / closing body. The opening / closing body is provided so as to be movable. According to the opening / closing mechanism of the opening / closing body according to the fourth aspect, when the opening / closing operation of the opening / closing body is performed, the operation lever is provided at a position where the operator does not need to perform an unstable operation. it can.

  According to a fifth aspect of the present invention, in the opening / closing mechanism of the opening / closing body according to any one of the first to fourth aspects, a rotating body, a ratchet claw, When the hinge arm is arranged on the plate surface, it is formed on the peripheral edge different from the formation range of the ratchet gear portion of the rotating body, and the ratchet pawl is opened to a predetermined position so that the ratchet pawl is When it is out of the formation range of the gear part, the cam part for separating the ratchet pawl from the ratchet gear part and the hinge bracket are rotatably attached to the rotating shaft, and one part projects from one plate surface, and the other The lock member is formed so that the part of the lock member protrudes from the other plate surface, and the elastic member is elastically repelled so that each part of the lock member normally protrudes from the plate surface of the hinge bracket. The lock member swings so that when the cam portion disengages the ratchet pawl from the ratchet gear portion, one portion engages with the ratchet pawl so that the ratchet pawl does not rotate in the direction of the ratchet gear portion. When the opening / closing body is closed from a predetermined position, the other part is pressed by the hinge arm and swings so as to retract one part from one plate surface.

  According to the opening / closing mechanism of the opening / closing body according to the fifth aspect, when the opening / closing body that is opened and held to the predetermined opening degree is further opened, the cam of the rotating body that interlocks with the hinge arm fixed to the opening / closing body Part removes the ratchet claw from the formation range of the ratchet gear part and moves it so as to be disengaged from the outer periphery of the rotating body, so that the locking member has one portion on the ratchet claw so that the ratchet claw does not rotate in the direction of the rotating body. Swing to engage. In this state, when the opening / closing body is moved in the closing direction, the rotating body rotates without the ratchet gear portion being locked by the ratchet pawl, so that the hinge arm can be swung in the closing direction of the opening / closing body. When the opening / closing body moves in the closing direction, the other part of the lock member is pressed against the hinge arm, and the one part can be swung so as to be retracted from the one plate surface.

  According to a sixth aspect of the present invention, in the opening / closing mechanism of the opening / closing body according to the fifth aspect, the elastic body is wound around the rotating shaft, and one arm portion is engaged with one portion of the lock member, and the other arm A torsion coil spring having a portion engaged with the hinge bracket. In this specification, “winding” means wearing in a state where the outside is wound. According to the opening / closing mechanism of the opening / closing body according to the fifth aspect as described above, each part of the lock member can be elastically repelled so as to always protrude from each plate surface of the hinge bracket.

  According to a seventh aspect of the present invention, in the opening / closing mechanism of the opening / closing body according to any one of the first to sixth aspects, the hinge arm and the rotating body are each fixed to a hinge pin, and the hinge pin is a hinge bracket. It is attached to be freely rotatable. According to the opening / closing mechanism for the opening / closing body according to the seventh aspect, the hinge arm can be swung by the rotational movement of the hinge pin to rotate the rotating body.

  According to an eighth aspect of the present invention, in the opening / closing mechanism of the opening / closing body according to any one of the first to sixth aspects, the hinge arm and the rotating body are coupled to be interlocked and fixed to the hinge bracket. The hinge pin is rotatably mounted. According to the opening / closing mechanism of the opening / closing body according to the eighth aspect as described above, the rotating body can be rotated by swinging the hinge arm with the hinge pin as the rotation center.

  According to the opening / closing mechanism of the opening / closing body of the present invention, the hood can be held at an arbitrary open position as well as the opening / closing operability of the hood, and the workability in the engine room can be improved.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the example of preferable embodiment in the opening / closing mechanism of the opening / closing body of this invention, (A) A perspective view which shows the front part of a motor vehicle, (B) is a side view, (C) is a front view of (B), (D) is a figure which shows the partial detail of (B). BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view which shows the example of preferable embodiment in the opening / closing mechanism of the opening / closing body of this invention, (A) is the figure seen from the front side, (B) is the figure seen from the back side. It is a figure which shows the attachment state to the hood of the operation lever in the opening / closing mechanism of the opening / closing body of this invention, (A) is a perspective view, (B) is a top view. It is a side view which shows the operation state of the opening / closing mechanism of the opening / closing body of this invention, (A) is explanatory drawing of the state which the hood closed, (B) is explanatory drawing of the state which the hood opened. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view showing a relationship between a cam portion, a ratchet pawl, and a lock member of a rotating body in an opening / closing mechanism for an opening / closing body of the present invention. It is explanatory drawing of the state to go. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view showing a relationship between a cam portion of a rotating body, a ratchet pawl, and a lock member in an opening / closing mechanism for an opening / closing body of the present invention. It is explanatory drawing of the state to go. FIG. 6 is a diagram illustrating a conventional opening / closing mechanism of an opening / closing body, in which (A) is a perspective view of a front portion of an automobile to which a stay support type is applied, and (B) is a perspective view of a front portion of an automobile to which a damper stay support type is applied. C) is a perspective view of a hinge mechanism used for an opening / closing mechanism of each supporting type opening / closing body.

  Hereinafter, an embodiment for implementing an opening / closing mechanism for an opening / closing body of the present invention will be described with reference to the drawings.

  As shown in FIG. 1 (A), the opening / closing mechanism of the opening / closing body of the present invention attaches a hood 3 as an opening / closing body so as to be freely opened and closed with respect to an engine room 21 which is an opening portion opened to a front portion 2A of an automobile 2. Thus, they are respectively installed at both end portions of the cowl top panel 22 side (a circle portion consisting of a one-dot chain line in the figure) disposed between the hood 3 and the windshield 4 of the front portion 2A. As shown in FIGS. 1B, 1C, 2A, and 2B, the opening / closing mechanism 1 for the opening / closing body includes a hinge bracket 11 fixed to each part on the cowl top panel 22 side of the automobile 2. And a hinge arm 12 fixed to the hood 3 for covering the engine room 21 and a hinge pin 13 for attaching the hinge arm 12 to the hinge bracket 11. The hinge arm 12 is pivoted about the hinge pin 13. The hood 3 is opened and closed with respect to the engine room 21 by the swinging motion. In FIG. 1B, the hinge bracket 11 is omitted for convenience.

  The opening / closing mechanism 1 for the opening / closing body includes a rotating body 14 attached to the hinge pin 13 so as to be linked to the swinging motion of the hinge arm 12, a ratchet gear portion 14a formed on the periphery of the rotating body 14, and a hinge bracket. 11 is engaged with the ratchet gear portion 14a when rotated in one direction, and is disengaged from the ratchet gear portion 14a when rotated in the opposite direction to the one direction. An operation lever 16 that is connected to rotate the ratchet pawl 15 is provided.

  As shown in FIG. 1C, the rotating body 14 and the ratchet pawl 15 are arranged on one plate surface 11a of the hinge bracket 11, and the hinge arm 12 is arranged on the other plate surface 11b. . Further, the hinge arm 12 and the rotating body 14 are respectively fixed to a hinge pin 13, and the hinge pin 13 is rotatably attached to the hinge bracket 11. By mounting the rotating body 14, the ratchet pawl 15, and the hinge pin 13 on the hinge bracket 11 in this way, the rotating arm 14 can be swung by rotating the hinge pin 13 and the rotating body 14 can be rotated.

  As shown in FIGS. 1 (B) and 2 (A), the ratchet gear portion 14a has two teeth so that the open / close position of the hood 3 can be adjusted in two stages, for example. When the hood 3 is opened to a predetermined position, the teeth of the ratchet gear portion 14a are locked to the ratchet pawl 15 and stop the rotation of the rotating body 14 so that the hood 3 does not move in the closing direction from the open position. Shape. Moreover, the elastic means 10 which repels and repels the ratchet nail | claw 15 in the direction engaged with the ratchet gear part 14a is provided. By providing such elastic means 10, when the operation lever 16 described later is not rotated, the ratchet pawl 15 can be always locked to the ratchet gear portion 14 a by the elastic force of the elastic means 10. It is possible to prevent the ratchet pawl 15 from being detached from the ratchet gear portion 14a due to vibration or the like.

  The elastic means 10 includes a rotation shaft 11d that protrudes from the hinge bracket 11 and serves as a rotation center of the ratchet claw 15, an inner end portion 151a is coupled to the rotation shaft 11d, and an outer end portion 151b is connected to the ratchet claw. 15 is provided with a spiral spring 151 in which a bending stress is applied. The ratchet pawl 15 is provided with a circular groove 15a for accommodating the spiral spring 151, and an outer end portion 151b of the spiral spring 151 is coupled to a wall portion of the groove 15a. By configuring the elastic means 10 in this way, it is possible to store a large amount of energy due to elastic repelling in a narrow space, so that it is possible to generate a strong elastic repelling force even with a small ratchet claw.

  As shown in FIG. 3A, the operation lever 16 is provided in the hood 3 so that the ratchet pawl 15 can be rotated via a cable 31 that is movably mounted on the back side of the hood 3. Specifically, as shown in FIG. 1B, the ratchet claw 15 is composed of a fulcrum part 15a, a force point part 15b, and an action point part 15c, and the fulcrum part 15a is a shaft serving as a base point of the swinging movement of the ratchet claw 15. The force point portion 15b is a portion that engages with the ratchet gear portion 14a, and the action point portion 15c is a portion to which the cable 31 is connected. As shown in FIG. 3B, the cable 31 is mounted on the back surface of the hood 3 so as to be movable along the outer edge portion of the hood 3. Accordingly, when the operation lever 16 is moved in the pulling direction, the cable 31 pulls the force point portion 15b of the ratchet pawl 15. Therefore, the ratchet pawl 15 uses the fulcrum portion 15a as the rotation center and the action point portion 15c of the rotating body 14. It can be detached from the ratchet gear portion 14a. Therefore, when performing the opening / closing operation of the hood 3, the operation cable 16 can be provided at a corresponding position of the hood 3 so that the operator does not have to perform an unstable operation.

  Further, as shown in FIGS. 1B and 2A, the opening / closing mechanism 1 of the opening / closing body of the present invention is formed on the periphery different from the formation range of the ratchet gear portion 14a of the rotating body 14, and the hood 3 is When the ratchet pawl 15 is released from the formation range of the ratchet gear portion 14a of the rotating body 14 by being opened to a predetermined position, it has a cam portion 14b that allows the ratchet pawl 15 to be detached from the ratchet gear portion 14a.

  Further, the opening / closing mechanism 1 of the opening / closing body of the present invention has a rotating shaft that is rotatable about a hinge bracket 11 as shown in FIGS. 1 (B), (C), (D), FIGS. 2 (A), (B). 17, a lock member 18 formed so that one portion 18 a protrudes from one plate surface 11 a of the hinge bracket 11 and the other portion 18 b protrudes from the other plate surface 11 b, Each part 18a, 18b is provided with an elastic body 19 that elastically repels so as to protrude from the plate surfaces 11a, 11b of the hinge bracket 11 at all times.

  The lock member 18 can be stored in the opening 11c provided in the hinge bracket 11, and when the cam portion 14b causes the ratchet pawl 15 to be detached from the ratchet gear portion 14a, the ratchet pawl 15 moves in the direction of the ratchet gear portion 14a. The one portion 18a is swung so as to engage with the ratchet pawl 15 so as not to rotate, and when the hood 3 is closed from a predetermined position, the other portion 18b is pressed against the hinge arm 12 while the other portion 18a is pressed. The hinge bracket 11 swings so as to be retracted from one plate surface 11a.

  The elastic body 19 that repels and repels the lock member 18 is wound around the rotation shaft 17, one arm portion 19 a is engaged with one portion 18 a of the lock member 18, and the other arm portion 19 b is engaged with the hinge bracket 11. It is a torsion coil spring combined. By using a torsion coil spring for the elastic body 19 that repels and repels the lock member 18 in this way, the portions 18 a and 18 b of the lock member 18 are always projected from the plate surfaces 11 a and 11 b of the hinge bracket 11. Can be repelled. 1C and 1D, one portion 18a of the lock member 18 is an upper portion around the rotation shaft 17, and the other portion 18b is a lower portion around the rotation shaft 17. is there.

  The operation of the opening / closing mechanism 1 of the opening / closing body configured as described above will be described below with reference to FIGS. 4A, 4B, 5A, 5B, 6A, and 6B. This will be described with reference to (A).

  When the hood 3 is opened from the closed state so as to cover the engine room 21 to a predetermined position, the rotary body 14 rotates together with the hinge arm 12 fixed to the hood 3 so that the rotary body 14 rotates the hinge pin 13. By rotating around the shaft, the ratchet pawl 15 is disengaged from the first ratchet gear portion 14a of the rotating body 14 and is locked by the second ratchet gear portion 14a, so that the hood 3 is closed from its open position. The rotation of the rotating body 14 can be stopped so as not to move. The predetermined position here is a predetermined opening position of the hood 3 for performing inspection and maintenance of each part in the engine room 21.

  In addition, when the hood 3 is shifted from the state where the hood 3 is opened to the predetermined position to the state where the hood 3 is closed so as to cover the engine room 21, the operation lever 16 (see FIGS. 3A and 3B) is used. There is a method of using the cam portion 14b and the lock member 18 of the rotating body 14.

  The method of using the operation lever 16 is to release the latching state between the second ratchet gear portion 14a and the ratchet pawl 15 with the hood 3 lifted up, and to operate the operation lever 16 by simply operating the ratchet via the cable 31. Since the claw 15 can be detached from the second ratchet gear portion 14 a and moved to the first ratchet gear portion 14 a, the rotating body 14 can be rotated in the closing direction so that the hood 3 covers the engine room 21. it can.

  On the other hand, in the method using the cam portion 14b and the lock member 18 of the rotating body 14, when the hood 3 that is opened and held to a predetermined opening degree is further opened, FIGS. 5 (A), 5 (B), and 6 (A). ), As shown in (B), the cam portion 14b of the rotating body 14 interlocking with the hinge arm 12 fixed to the hood 3 removes the ratchet pawl 15 from the formation range of the two ratchet gear portions 14a, 14a and rotates. It moves so that it may remove | deviate from the outer periphery of the body 14. FIG.

  When the ratchet pawl 15 swings upward by the cam portion 14 b of the rotating body 14, the lock member 18 is engaged with the ratchet pawl 15 at one portion 18 a so that the ratchet pawl 15 does not rotate in the direction of the rotating body 14. Rocks. When the hood 3 is moved in the closing direction in this state, the rotating body 14 rotates without the second ratchet gear portion 14a being locked to the ratchet pawl 15, so that the hinge arm 12 is swung in the hood 3 closing direction. Further, when the hood 3 is moved in the closing direction, the other portion 18a of the lock member 18 is pressed against the hinge arm 12 while the one portion 18a is moved to one plate surface of the hinge bracket 11. It can be swung so as to retract from 11a.

  Therefore, the hood 3 can be shifted from the opened state to the predetermined position without operating the operation lever 16 so as to cover the engine room 21, and the ratchet pawl 15 is moved from the first ratchet gear portion 14a. It can be made to be in the state where it can be made to move to the state where it can be made to lock in the 2nd ratchet gear part 14a.

  Note that the method of using the operation lever 16 not only shifts the hood 3 from the open state to the predetermined position to the closed state so as to cover the engine room 21, but also moves the ratchet gear portion 14a of the rotating body 14 to the hood 3 When three or more are formed so as to be stopped at multi-stage open positions, they can also be used when moving to each open position. The operation method of the operation lever 16 is the same as the method using the operation lever 16 described above.

  As described above, the opening / closing mechanism 1 of the opening / closing body of the present invention only has to be provided only at the both end portions on the cowl top panel 22 side disposed between the hood 3 and the windshield 4 of the front portion 2A. It is possible to prevent an increase in weight and an increase in weight, and to ensure a great degree of freedom in workability when an operator inspects and maintains each part in the engine room 50. Moreover, according to the opening / closing mechanism 1 of the opening / closing body of the present invention, it is not necessary to perform the opening / closing operation of the unstable hood 3 like the conventional support mechanism of the opening / closing body of the stay support type. Further, according to the opening / closing mechanism 1 of the opening / closing body of the present invention, there is no need to worry about the accident of dropping the hood 3 due to the deterioration of the performance of the damper stay, unlike the conventional support mechanism of the damper stay supporting type opening / closing body. In addition, safety during opening / closing operation of the hood 3 can be improved and maintenance-free can be realized.

  In the above-described embodiment, the hinge arm and the rotating body are each fixed to the hinge pin, and the hinge pin is rotatably attached to the hinge bracket. However, the hinge arm and the rotating body are interlocked. The hinge pins connected to each other and fixed to the hinge bracket may be rotatably mounted. With this configuration, the rotating body can be rotated by swinging the hinge arm around the hinge pin.

  In the above-described embodiment, the present invention is applied to the hood 3 that covers the engine room 21. However, the present invention is not limited to this, and the opening / closing mechanism of the opening / closing body of the present invention can be freely opened / closed with respect to the opening of the vehicle body. It can be applied to all open / close bodies such as back doors and trunk lids.

  Although the present invention has been described with the specific embodiments shown in the drawings, the present invention is not limited to the embodiments shown in the drawings, and is known so far as long as the effects of the present invention are achieved. It goes without saying that any configuration can be adopted.

DESCRIPTION OF SYMBOLS 1 ... Opening / closing mechanism of opening / closing body 10 ... Elastic means 11 ... Hinge bracket 11d ... Rotating shaft 12 ... Hinge arm 13 ... Hinge pin 14 ... Rotating body 14a ... Ratchet gear part 14b ... Cam part 15 ...... Ratchet pawl 15a …… Circular groove 16 …… Control lever 18 …… Lock member 19 …… Torsion coil spring (elastic body)
21 …… Engine room 31 …… Cable 151 ... Spiral spring 151a …… Inward end 151b …… Outer end

Claims (8)

A hinge bracket fixed to the vehicle body,
A hinge arm fixed to an opening / closing body for covering an opening portion opened in the vehicle body;
A hinge pin for attaching the hinge arm to the hinge bracket;
In an opening / closing mechanism of the opening / closing body that opens / closes the opening / closing body with respect to the opening of the vehicle body by swinging movement of the hinge arm around the hinge pin,
A rotating body attached to the hinge pin so as to interlock with the swinging motion of the hinge arm;
A ratchet gear portion formed on the periphery of the rotating body;
A ratchet claw that is pivotally installed with respect to the hinge bracket, engages with the ratchet gear portion when rotated in one direction, and disengages from the ratchet gear portion when rotated in a direction opposite to the one direction;
An operation lever coupled to the ratchet pawl for rotating the ratchet pawl;
The ratchet gear portion has a shape that, when the opening / closing body is opened to a predetermined position, is locked by the ratchet pawl to stop the rotation of the rotating body so that the opening / closing body does not move in the closing direction from the open position. An opening / closing mechanism for an opening / closing body.   2. An opening / closing mechanism for an opening / closing body according to claim 1, further comprising elastic means for resiliently repelling the ratchet pawl in the one direction. The elastic means is
A pivot shaft projecting from the hinge bracket and serving as a pivot center of the ratchet pawl;
3. An opening / closing body according to claim 2, further comprising a spiral spring having an inner end portion coupled to the rotating shaft and an outer end portion coupled to the ratchet pawl to act on a bending stress. Opening and closing mechanism.   The said operation lever is provided in the said opening-and-closing body so that rotation of the said ratchet nail | claw is possible via the cable with which the back surface side of the said opening-and-closing body was mounted | worn so that a movement was possible. The opening / closing mechanism of the opening / closing body according to 3. In the case where the rotating body and the ratchet pawl are arranged on one plate surface of the hinge bracket, and the hinge arm is arranged on the other plate surface,
When the ratchet pawl is out of the formation range of the ratchet gear portion of the rotating body, formed on the periphery different from the formation range of the ratchet gear portion of the rotating body, and the opening and closing body is opened to a predetermined position. A cam portion for separating the ratchet pawl from the ratchet gear portion;
A lock member that is rotatably mounted on the hinge bracket with a rotating shaft, and is formed such that one part protrudes from the one plate surface and the other part protrudes from the other plate surface;
Each part of the lock member is provided with an elastic body that is elastically repelled so as to protrude from each plate surface of the hinge bracket at all times,
The locking member is configured such that when the cam portion disengages the ratchet pawl from the ratchet gear portion, the one portion engages with the ratchet pawl so that the ratchet pawl does not rotate in the direction of the ratchet gear portion. When the opening / closing body is closed from the predetermined position, the other part is pressed against the hinge arm so that the one part is retracted from the one plate surface. The opening / closing mechanism of the opening / closing body according to any one of claims 1 to 4. The elastic body is
It is a torsion coil spring wound around the rotating shaft and having one arm engaged with the one part of the lock member and the other arm engaged with the hinge bracket. Item 6. An opening / closing mechanism for an opening / closing body according to Item 5.   The said hinge arm and the said rotary body are each fixed to the said hinge pin, The said hinge pin is rotatably mounted in the said hinge bracket, The any one of the Claims 1 thru | or 6 characterized by the above-mentioned. Opening and closing mechanism of the opening and closing body.   The hinge arm and the rotating body are coupled so as to be interlocked with each other, and are rotatably mounted on the hinge pin fixed to the hinge bracket. An opening / closing mechanism for the opening / closing body according to the item.

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