JP2006192122A - Lock mechanism - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lock mechanism functioning to releasably maintain the state of being at a closed position of a lid body and press the lid body to a main body at the closed position. <P>SOLUTION: The center line x of a tension spring body 502 is positioned on the front side of the turning shaft 501a of a turning body 501 at a standby position and the center line x of the tension spring body 502 is positioned on the rear side of the turning shaft 501a at a lock position. A hook body 510 is moved so that the hook end 510a of the hook body 510 comes out from the catch recessed part 501d of the turning body 501 at the lock position by the operation of an operation part 511, and a pair of lid bodies 1 at the closed position are moved to a completely open position by an energizing means 3 and a linking means 4 by the movement of the hook body 510. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an improvement in a lock mechanism that releasably maintains a state where a lid is in a closed position.

  There exists a thing shown by patent document 1 as a holding member which hold | maintains the door of a dishwasher in a closed state. In such a holding member, when the operation member is pulled forward, the holding state is released and the door can be opened in the opening direction.

However, such a holding member simply holds the holding member in the closed position of the door at the engagement portion provided on the dishwasher main body side, and maintains this closed state. It does not act to press the door against the opening of the dishwasher body in the state.
Japanese Patent Laid-Open No. 5-115405

  The main problem to be solved by the present invention is to provide a lock mechanism that keeps the lid in the closed position so that it can be released, and functions to press the lid against the main body in the closed position. .

In order to solve the above problems, in the first invention, the lock mechanism has the following configurations (1) to (11).
(1) A lock mechanism for releasably maintaining the state of the lid in the closed position,
(2) The lid is assembled to the main body so as to pivot from the closed position to the fully opened position, and is always urged by the urging means to move toward the fully opened position, and the linking means. Has a part that is moved with the lid by
(3) The lock mechanism includes a passive part provided in the main body whose opening is closed by the lid, an active part provided in the lid, and a return part of the passive part formed in the part. ,
(4) The passive part includes a base fixed to the main body, a rotating body rotatably assembled to the base, and a tension spring body.
(5) The rotating body has a catch recess, and is configured to rotate between a standby position where the entrance of the catch recess is directed forward and a lock position which is not directed forward,
(6) The tension spring body has one end of the spring fixed to the rotating body on one side of the rotating shaft of the rotating body, and the other end of the spring is fixed to the base on the other side of the rotating shaft. Dressed,
(7) The center line of the tension spring body is positioned on the front side of the rotation shaft at the standby position, and the center line of the tension spring body is positioned on the rear side of the rotation shaft at the lock position. And
(8) The active part includes a hook body and an operation part of the hook body,
(9) The hook body is provided with a hook end that enters the catch recess of the rotating body at the standby position by the operation of moving the lid body to the closed position. The state of being in the closed position of the body is maintained,
(10) The hook body is moved so that the hook end of the hook body comes out of the catch recess of the rotating body in the lock position by the operation of the operation portion, and the hook body is in the closed position by the movement of the hook body. The lid is moved to the fully open position by the biasing means,
(11) The abutting portion for return comes to abut against the rotating body at the lock position from the rear by the movement of the lid body toward the fully opened position.

  In the standby position of the rotating body, the center line of the tension spring body is positioned on the front side of the rotating shaft of the rotating body, so that the state of the rotating body in the standby position is stably maintained by the tension spring body. The When the rotating body is rotated backward beyond the intermediate rotation position for positioning the rotating shaft on the center line of the tension spring body, the rotating body does not return to the standby position by the action of the tension spring body, and the hook body is rotated. The lid engaged with the moving body is drawn into the closed position and moved. Since the center line of the tension spring body is located on the rear side of the pivot shaft of the rotary body at the lock position of the rotary body, the state at the lock position of the rotary body is also stably maintained by the tension spring body. The In other words, the cover body is always urged so as to move toward the fully open position by the urging force of the urging means, but at the closed position, the cover body is moved toward the fully open position by the rotating body at the lock position. The opening is closed in a state where the opening is tightly held and is in close contact with the opening. The closed state of the opening that positions the lid in the closed position can be released with one touch by operating the operation portion, and by this release, the lid is pivoted to the fully opened position by the biasing means.

  In addition, since the center line of the tension spring body is positioned on the rear side of the rotating shaft at the lock position of the rotating body, the hook end of the hook body is simply pulled out from the catch recess of the rotating body by the operation of the operating portion. In this case, the rotating body is not returned to the standby position, but when the lid is moved toward the fully open position by this operation, the returning abutting portion abuts against the rotating body, so that the action of the tension spring body is resisted. When the lid is moved to the fully open position, the rotating body can be simultaneously moved to the standby position. Thus, when the lid body is moved again toward the closed position, the hook end of the hook body can be reentered into the catch recess of the rotating body.

In order to solve the above problems, in the second invention, the lock mechanism has the following configurations (1) to (11).
(1) A lock mechanism that releasably maintains the state of the pair of lids in the closed position,
(2) The pair of lids are assembled to the main body so as to pivot from the closed position to the fully opened position, and are always urged by the urging means to move toward the fully opened position, and The pair of lids are moved together in the opening and closing directions by the link means,
(3) The lock mechanism is provided on one side or the other side of the pair of lids, the passive part provided on the main body whose opening is closed by the pair of lids, the active part provided on one of the pair of lids. And a passive abutment part for returning passive parts,
(4) The passive part includes a base fixed to the main body, a rotating body rotatably assembled to the base, and a tension spring body.
(5) The rotating body has a catch recess, and is configured to rotate between a standby position where the entrance of the catch recess is directed forward and a lock position which is not directed forward,
(6) The tension spring body has one end of the spring fixed to the rotating body on one side of the rotating shaft of the rotating body, and the other end of the spring is fixed to the base on the other side of the rotating shaft. Dressed,
(7) The center line of the tension spring body is positioned on the front side of the rotation shaft at the standby position, and the center line of the tension spring body is positioned on the rear side of the rotation shaft at the lock position. And
(8) The active part includes a hook body and an operation part of the hook body,
(9) The hook body is provided with a hook end that enters the catch recess of the rotating body at the standby position by an operation of moving the pair of lids to one of the closed positions. Is maintained in the closed position of one lid,
(10) The hook body is moved so that the hook end of the hook body comes out of the catch recess of the rotating body in the lock position by the operation of the operation portion, and the hook body is in the closed position by the movement of the hook body. The pair of lids are moved to the fully open position by the biasing means and the link means,
(11) The abutting portion for return comes to abut against the rotating body at the lock position from the rear by the movement of the pair of lid bodies toward the fully opened position.

  In the standby position of the rotating body, the center line of the tension spring body is positioned on the front side of the rotating shaft of the rotating body, so that the state of the rotating body in the standby position is stably maintained by the tension spring body. The When the rotating body is rotated backward beyond the intermediate rotation position for positioning the rotating shaft on the center line of the tension spring body, the rotating body does not return to the standby position by the action of the tension spring body, and the hook body is rotated. One lid engaged with the moving body is drawn and moved to the closed position, and the other lid is also drawn and moved to the closed position. Since the center line of the tension spring body is located on the rear side of the pivot shaft of the rotary body at the lock position of the rotary body, the state at the lock position of the rotary body is also stably maintained by the tension spring body. The That is, the pair of lids are always urged so as to move toward the fully opened position by the urging force of the urging means. The opening is tightly held so as not to cause any movement, and the opening is closed in close contact with the opening. The closed state of the opening in which the pair of lids are positioned at the closed position can be released with one touch by operating the operation portion, and by this release, the pair of lids are pivoted to the fully opened position by the urging means.

  In addition, since the center line of the tension spring body is positioned on the rear side of the rotating shaft at the lock position of the rotating body, the hook end of the hook body is simply pulled out from the catch recess of the rotating body by the operation of the operating portion. In this case, the rotating body is not returned to the standby position, but when the lid is moved toward the fully open position by this operation, the returning abutting portion abuts against the rotating body, so that the action of the tension spring body is resisted. When the lid is moved to the fully open position, the rotating body can be simultaneously moved to the standby position. Thus, when the lid body is moved again toward the closed position, the hook end of the hook body can be reentered into the catch recess of the rotating body.

  In the state where the pair of lids are in the fully open position, a blocking portion positioned at the rear of the rotating body is formed in the link means so as to prevent the rotation of the rotating body at the standby position toward the lock position. Sometimes it is left.

  In this case, even if the rotating body in the standby position is accidentally touched, the rotating body can be prevented from rotating toward the lock position, and the cover body in the fully open position is directed toward the closed position. When the moving operation is performed, the hook end of the hook body can always enter the catch recess of the rotating body.

  To the base of the passive part, the hook end is pulled out from the catch recess of the rotating body by the operation of the forward path for guiding the hook end of the hook body as the pair of lid bodies move to one closed position. In some cases, a cam groove including a return path for guiding the hook end of the hook body is formed.

  In this case, when the hook end of the hook body is pulled out from the catch concave portion of the rotating body by operating the operation portion, the hook end can be guided to the return path of the cam groove, and in this state, the bias is applied. The pair of lids immediately start to pivot toward the fully open position by the biasing of the means, so even if the operation of the operation part is stopped there, the hook end of the hook body does not enter the catch recess of the rotary body again. Can be.

An auxiliary hook body provided on one of the pair of lids, and an urging means for urging the auxiliary hook body so that the hook end of the auxiliary hook body is always positioned at the engagement position,
As the hook end of the auxiliary hook body moves over the hooked portion formed on the main body against the biasing as the pair of lids move to the one closed position, While being hooked to the hooking part,
By operating the operation part, this auxiliary hook body is moved against the urging force,
In addition, the hook body may be pushed by the auxiliary hook body moved by the operation of the operation portion so that the hook end is pulled out from the catch recess of the rotating body.

  In this case, by engaging the hook end of the auxiliary hook body with the engaged portion of the main body, the state of the lid body in the closed position can be more stably maintained. At the same time, by operating the operation portion, the engagement of the auxiliary hook body and the engagement of the hook body can be simultaneously released, and the lid body can be swung toward the fully opened position.

  According to the lock mechanism of the present invention, the lid that is constantly urged so as to move toward the fully opened position by the urging force of the urging means is moved by the rotating body that is in the locked position at the closed position. It can be held firmly and brought into close contact with the opening of the main body so as not to move toward the fully open position.

  The best mode for carrying out the present invention will be described below with reference to FIGS.

  1, 3, 5, 7, 9, 11, 13, and 15 are a pair of lids that are maintained in the closed position by the lock mechanism 5 according to the embodiment. A main body 2 having an opening 20 to be closed by the bodies 1 and 1 on the left side of each figure is shown as viewed from the right side portion 21 side adjacent to the opening 20. It is already provided in the left side portion 21 in the same manner. In FIG. 1, the pair of lids 1 and 1 are in the fully open position, and in FIG. 9, they are in the closed position. The lid 1 in the fully opened position moves to the closed position in the order of FIGS. 1, 3, 5, 7, and 9 and closes in the order of FIGS. 9, 11, 13, 15, and 1. The lid 1 in the position moves to the fully open position. 2, FIG. 4 is FIG. 3, FIG. 6 is FIG. 5, FIG. 8 is FIG. 7, FIG. 10 is FIG. 9, FIG. FIG. 16 shows the main parts of FIG.

  17 shows the rotating body 501, the tension spring body 502, and the base 500 of the passive part 50 constituting the lock mechanism 5 separately. FIG. 18 shows the rotating body 501, and FIG. Each base 500 is shown as viewed from the side.

  Further, FIG. 20 shows the active part 51 represented by an imaginary line from the front side of the lower cover 10 in the closed position so that the arrangement of the active parts 51 constituting the lock mechanism 5 can be easily understood. FIG. 21 shows a hook body 510 in such an active part 51.

  The lock mechanism 5 according to this embodiment maintains the lid 1, particularly the pair of lids 1, 1 in a releasable state.

(Cover 1)
The pair of lids 1 and 1 are assembled to the main body 2 so as to pivot from the closed position to the fully opened position.

  In the illustrated example, the pair of lids 1 and 1 are attached to the main body 2 so that the opening 20 formed on one side of the main body 2 is releasably closed. In the illustrated example, the lower half of the opening 20 is closed by the lower lid 10, and the upper half of the opening 20 is closed by the upper lid 11. Each of the lids 1 is configured so as to close the opening 20 by pressing one surface (hereinafter referred to as an inner surface) of the lid 1 against the edge 201 of the opening 20 of the main body 2 in the closed position. In the closed position, the upper end portion of the lower lid body 10 and the lower end portion of the upper lid body 11 are brought into contact with each other at a position approximately in the middle of the opening 20 in the vertical direction.

  The lower lid body 10 is rotatably assembled to the main body 2 by a rotation shaft 22 on the lower end side. The lower lid body 10 is configured to pivot about a pivot shaft 22 between a closed position that stands substantially vertically and a fully open position that lies down substantially horizontally.

  On the other hand, the upper lid 11 is supported by a support member 23 that is rotatably assembled to the upper portion of the main body 2, and swivels between a closed position that hangs substantially vertically and a fully open position that is lifted substantially horizontally. It is designed to move. The support member 23 is assembled to the main body 2 so as to be rotatable with a rotation shaft 230, and has a sliding contact portion 231 at a position in front of the rotation shaft 230, and the inner surface of the upper lid body 11. The upper lid 11 is supported by allowing the sliding contact portion 231 to be run in a rail portion 110 formed so as to extend in the vertical direction of the upper lid 11 formed on the side. When the upper lid body 11 is closed, the sliding contact portion 231 of the support member 23 is positioned on the upper end side of the upper lid body 11 (FIG. 9). When the upper lid body 11 is fully opened, the sliding contact portion 231 of the support member 23 is It is located on the lower end side of the upper lid 11. (FIG. 1) With this support member 23, the upper lid 11 is positioned above the main body 2 with its inner surface facing the upper surface of the main body 2 in the fully open position. (Figure 1)

  The pair of lids 1, 1 are urged by the urging means 3 so as to always move toward the fully open position, and the pair of lids 1, 1 are also opened by the link means 4. They are also moved together in the closing direction.

In the example shown, such linking means 4 is
(1) a first link arm 40 having a lower end 400 rotatably assembled to the lower lid body 10;
(2) One end 410 is rotatably assembled to the main body 2, and the other end 411 is rotatably assembled to the upper lid body 11, and the upper end 401 of the first link arm 40 is rotated between both ends 410, 411. It is comprised from the 2nd link arm 41 assembled | attached possible.

  Further, in the illustrated example, the urging means 3 is a pull that holds the spring upper end 300 between the upper end 401 and the lower end 400 of the first link arm 40 and also holds the spring lower end 301 on the main body 2 side. The coil spring 30 is used.

  More specifically, in the illustrated example, a lever portion 111 that protrudes from the inner surface of the upper lid body 11 in a direction substantially orthogonal to the inner surface is formed at the lower end portion of the upper lid body 11. The other end 411 of the second link arm 41 is joined to the protruding end of the second link arm 41 so as to be rotatable. In the closed position, one end 410 of the second link arm 41 is positioned substantially immediately above the other end 411 of the second link arm 41, and is slightly above the one end 410 of the second link arm 41 and behind it. Further, the upper end 401 of the first link arm 40 is positioned, and the tension coil spring 30 is extended most in the closed position.

  The state in which the pair of lids 1 and 1 are in the closed position is maintained by the lock mechanism 5, but the hook 510 d of the rotating body 501 in the lock position is operated by operating an operation portion 511 of the hook body 510 described later. When the hook end 510a of the body 510 is pulled out, the first link arm 40 is moved downward by the elastic return of the tension coil spring 30, and accordingly, the second link arm 41 moves the other end 411 of the second link arm 41. It is rotated to a position where it protrudes forward and further protrudes upward. Thereby, the upper lid body 11 and the lower lid body 10 are turned together to the fully opened position. (FIG. 1 through FIG. 9 to FIG. 11, FIG. 13 and FIG. 15)

  When the pair of lids 1 and 1 are pushed from the fully open position so as to raise the lower lid 10 toward the closed position, the first link arm 40 is moved upward while the tension coil spring 30 is extended again. Accordingly, the second link arm 41 is rotated so as to move the other end 411 of the second link arm 41 downward, and the other end 411 is further pulled inward from the opening 20 of the main body 2. It is rotated to the set position. Thereby, the upper lid body 11 and the lower lid body 10 are turned together to the closed position. (FIG. 9 through FIG. 1 to FIG. 3, FIG. 5 and FIG. 7)

  In the illustrated example, the urging means 3, the link means 4, and a lock mechanism 5 described later are provided on both side portions 21, 21 adjacent to the opening 20 of the main body 2.

(Lock mechanism 5)
The lock mechanism 5 includes a passive part 50 provided in the main body 2 whose opening 20 is closed by the pair of lids 1, 1, an active part 51 provided in one of the pair of lids 1, 1, and a pair of lids 1 and 1 and a return abutment portion 52 of the passive part 50 provided on one side or the other side.

  In the illustrated example, the active part 51 is provided in the lower lid body 10. Further, the return contact portion 52 is provided in the upper lid body 11.

(Lock mechanism 5 / passive parts 50)
The passive part 50 includes a base 500 fixed to the main body 2, a rotating body 501 that is rotatably attached to the base 500, and a tension spring body 502.

  In the example shown in the drawing, the base 500 is provided in a superposed manner so that a gap corresponding to the thickness dimension of the rotating body 501 is provided between the substrate 500a and the lower corner portion of the substrate 500a on the lower side of the substrate 500a. Auxiliary plate 500b. A cam groove 500c, which will be described later, is formed in the upper corner of the front side of the base 500. Further, a through hole 500i having a long hole shape is formed at the center of the substrate 500a, and a shaft protrusion 501b that becomes a rotation shaft 501a of the rotation body 501 described later is rotated at the lower end of the through hole 500i. It is designed to keep it movable. Further, behind this through hole 500i, a curved hole 500j having a long hole shape is formed in both the substrate 500a and the auxiliary plate 500b along a movement locus of a regulating shaft 501c formed in the rotating body 501 described later. The rotating body 501 causes the restriction shaft 501c to abut the position (standby position / FIGS. 1 and 2) where the restriction shaft 501c abuts on the upper end of the curved hole 500j and the hole lower end of the curved hole 500j. It is designed to rotate between positions (lock position / FIGS. 9 and 10).

  The rotating body 501 has a catch recess 501d and is rotated between a standby position where the entrance 501e of the catch recess 501d is directed forward and a lock position which is not directed forward.

  In the example shown in the drawing, the rotating body 501 is configured such that two substantially identically shaped plate bodies 501f and 501f having a short side and a long side are assembled in an overlapping manner with a gap between the inner surfaces. Configured. The catch recess 501d is opened outward on one short side of the rotating body 501 and serves as an entrance 501e. In addition, a contacted portion 501g protruding rearward is formed on one short side of the rotating body 501 and behind the entrance 501e of the catch recess 501d.

  Further, on the other short side of the rotating body 501, a shaft protrusion 501b protruding from the outer surface of each of the two plates 501f and 501f is formed. Further, on the other short side of the rotating body 501 and behind the shaft protrusion 501b, a regulation shaft 501c protruding from the outer surface of each of the two plate bodies 501f and 501f is provided.

  The tension spring body 502 has one end of the spring fastened to the rotating body 501 on one side of the rotating body 501 sandwiching the rotating shaft 501a and the other side of the rotating shaft 501a on the base 500. The other end is fixed.

  In the illustrated example, the tension spring body 502 is constituted by a tension coil spring 502a. Further, in the example shown in the figure, a fastening shaft 501h at one end of the tension coil spring 502a extending between the two plate bodies 501f and 501f is located behind the catch recess 501d of the rotating body 501 and below the contacted portion 501g. And a fastening shaft 500k at the other end of the tension coil spring 502a extending between the substrate 500a and the auxiliary plate 500b is provided below the curved hole 500j of the base 500. The tension coil spring 502a is a rotating body. The rotating body 501 and the base 500 are stretched so as to be accommodated between the two plate bodies 501f and 501f constituting the 501.

  The center line x of the tension spring body 502 is positioned in front of the rotation shaft 501a at the standby position of the rotation body 501 (FIGS. 1 and 2), and the rear side of the rotation shaft 501a at the lock position. The center line x of the tension spring body 502 is positioned at the center. (Fig. 9, Fig. 10)

(Lock mechanism 5 / active part 51)
The active part 51 includes a hook body 510 and an operation portion 511 of the hook body 510.

  The hook body 510 includes a hook end 510a that enters one of the pair of lid bodies 1 and 1, in the illustrated example, the catch recess 501d of the rotating body 501 in the standby position by the operation of moving the lower lid body 10 to the closed position. Yes.

  In the illustrated example, the hook body 510 includes a shaft portion 510b that is long in the left-right direction of the lower lid body 10 built in the lower lid body 10, and an outer end portion of the shaft portion 510b (the vertical direction of the lower lid body 10). A hook arm 510c that protrudes in a direction orthogonal to the shaft portion 510b from an end portion located on the edge side of the shaft portion 510b. The hook arm 510 c protrudes rearward from the inner surface side of the lower lid body 10. A tip end of the hook arm 510c, that is, a hook end 510a is formed with a first hook portion 510d protruding toward the inner end side of the shaft portion 510b and a second hook portion 510e protruding in a direction opposite to the first hook portion 510d. The second hook portion 510e enters the catch recess 501d of the rotating body 501.

  Then, when the hook end 510a enters the catch recess 501d of the rotating body 501, the rotating body 501 is moved to the lock position, and the state where the one lid body, in the illustrated example, is in the closed position of the lower lid body 10 is maintained. It has become so. When the lower lid body 10 is positioned at the closed position, the upper lid body 11 is also positioned at the closed position by the link means 4.

  That is, in the illustrated example, the entrance 501e of the catch recess 501d of the rotating body 501 at the standby position is positioned on the movement locus of the hook end 510a of the hook body 510 when the lower lid body 10 is moved toward the closed position. It has come to be. When the hook end 510a of the hook body 510 enters the catch concave portion 501d, the hook body 510 is pushed by the hook end 510a so that the rotating body 501 is rotated toward the lock position. Since the center line x of the tension spring body 502 is positioned in front of the rotation shaft 501a of the rotary body 501 at the standby position of the rotary body 501, the tension spring body 502 is in the standby position of the rotary body 501. Is maintained stably. When the rotating body 501 is rotated backward beyond the intermediate rotation position where the axis center of the rotating shaft 501 a is positioned on the center line x of the tension spring body 502, the rotating body 501 is on standby by the action of the tension spring body 502. The lower lid 10 with the hook body 510 engaged with the rotating body 501 is retracted and moved to the closed position, and the upper lid 11 is also retracted and moved to the closed position. Since the center line x of the tension spring body 502 is located on the rear side of the pivot shaft 501a of the rotary body 501 in the locked position of the rotary body 501, the tension spring body is also in the locked position of the rotary body 501. 502 is stably maintained. That is, the pair of lids 1 and 1 are always urged by the urging means 3 so as to move toward the fully open position, but at the closed position, the rotating body 501 is in the locked position. The opening 20 is tightly held so as not to move toward the fully opened position, and the opening 20 is closed in close contact with the opening 20.

  The hook body 510 is moved so that the hook end 510a of the hook body 510 comes out of the catch recess 501d of the rotating body 501 in the lock position by the operation of the operation portion 511. The pair of lids 1, 1 in the closed position by movement is moved to the fully opened position by the biasing means 3 and the link means 4.

  In the illustrated example, the hook body 510 is rotated in a standby position when the lower lid body 10 is constantly moved from the fully open position to the closed position by the biasing means 510f, here, the tension coil spring. The moving body 501 is biased (downward in the illustrated example) so as to be positioned at a position where it can enter the catch recess 501d. In addition, in the illustrated example, an operation portion 511 in which the pushing portion 511a is exposed on the outer surface of the lower lid body 10 is built in the lower lid body 10, and when the lower lid body 10 is in the closed position, the pushing portion When the 511a is pushed in, an auxiliary hook body 512, which will be described later, is rotated upward, and the hook body 510 is rotated against the bias by being pushed by the auxiliary hook body 512, and the hook end 510a is locked. The rotating body 501 at the position is made to escape upward from the catch recess 501d.

  That is, the closed state of the opening 20 that positions the pair of lids 1 and 1 in the closed position can be released with one touch by operating the operation portion 511, and the pair of lids 1 and 1 is urged by this release. 3 is turned to the fully open position.

(Return end portion 52)
The return contact portion 52 is configured to abut against the rotating body 501 at the lock position from the rear by the movement of the pair of lid bodies 1 and 1 toward the fully opened position.

  In the example shown in the figure, a protrusion located on the lower side of the protruding end side of the lever portion 111 of the upper lid body 11 is located behind the abutted portion 501g of the rotating body 501 in the locked position at the closed position of the pair of lid bodies 1 and 1. A portion 520 is formed, and when the upper lid body 11 is moved toward the fully open position by the operation of the operation portion 511, the protrusion 520 is abutted against the abutted portion 501g from the rear in the process of this movement. It has become. That is, in the example shown in the figure, the protruding portion 520 functions as the return contact portion 52. When the rotating body 501 is rotated to the standby position by this abutting, the abutted portion 501g deviates below the movement locus of the returning abutting portion 52, and the movement of the upper lid 11 toward the fully opened position is performed. It is not hindered by the rotating body 501.

  At the locked position of the rotating body 501, the center line x of the tension spring body 502 is positioned on the rear side of the rotating shaft, so that the hook end of the hook body 510 is moved from the catch recess 501d of the rotating body 501 by the operation of the operating portion 511. The rotating body 501 is not returned to the standby position by simply removing 510a. However, when the lid body 1 is moved toward the fully open position by this operation, the returning contact portion 52 hits the rotating body 501. When the lid body 1 is moved to the fully open position against the action of the tension spring body 502, the rotating body 501 can be simultaneously moved to the standby position. Thus, when the lid body 1 is moved again toward the closed position, the hook end 510a of the hook body 510 can be reentered into the catch recess 501d of the rotating body 501.

(Blocking part 412)
Further, in this embodiment, in a state where the pair of lids 1 and 1 are in the fully open position, the rotating body is prevented so that the rotating body 501 in the standby position is prevented from rotating toward the lock position. A blocking portion 412 positioned at the rear of 501 is formed in the link means 4.

  In the illustrated example, an overhang portion 413 is formed at a position positioned at the lowermost position of the second link arm 41 in a state where the pair of lid bodies 1 and 1 are in the fully open position. 413 is positioned behind the abutted portion 501g of the rotating body 501 in the standby position. (Fig. 1 and Fig. 2)

  In the illustrated example, the passive parts 50 are provided on the outer surface sides of both side parts 21, 21 adjacent to the opening 20 of the main body 2, and the hook bodies that constitute the active parts 51 on the left and right sides of the lower lid body 10, respectively. 510 is provided. Then, hook arms 510c protrude from the left and right sides of the lower lid body 10, the right hook arm 510c is engaged with the passive part 50 provided on the right side of the main body 2, and the left side of the main body 2 The hook part 510c on the left side is engaged with the passive part 50 provided in the above.

  According to this configuration, even if the rotating body 501 in the standby position is accidentally touched, the rotating body 501 can be prevented from rotating toward the lock position, and the lid 1 in the fully open position is closed. When moving toward the position, the hook end 510 a of the hook body 510 can always enter the catch recess 501 d of the rotating body 501.

(Cam groove 500c)
Further, in this embodiment, the forward path 500d that guides the hook end 510a of the hook body 510 to the base 500 of the passive part 50 as the pair of lid bodies 1 and 1 moves to one closed position; A cam groove 500c is formed which includes a return path 500f for guiding the hook end 510a of the hook body 510, which has been removed from the catch recess 501d of the rotating body 501 by the operation of the operation portion 511.

  In the illustrated example, the cam groove 500 c is formed on a surface portion on the assembly side of the rotating body 501 in the substrate 500 a of the base 500. In addition, a return path 500f is formed above the forward path 500d, and both the forward path 500d and the return path 500f are formed so as to be opened at the edge portion directed toward the front of the base 500 and extend rearward therefrom. In the illustrated example, the first hook portion 510d of the hook body 510 enters the forward path 500d of the cam groove 500c with the movement of the lower lid body 10 toward the closed position, and the rotating body 501 is positioned at the lock position. In this state, it is positioned at the end 500e of the forward path 500d. (FIGS. 9 and 10) At the same time, the hook body 510 is rotated upward so that the second hook portion 510e of the hook body 510 is pulled out from the catch recess 501d of the rotating body 501 in the locked position by the operation of the operation portion 511. When moved, the first hook portion 510d enters the start end 500g of the return path 500f of the cam groove 500c.

  According to this configuration, when the hook end 510a of the hook body 510 is pulled out from the catch recess 501d of the rotating body 501 by the operation of the operation portion 511, the hook end 510a can be introduced into the return path 500f of the cam groove 500c. In this state, the pair of lids 1 and 1 immediately start to pivot toward the fully opened position by the biasing means 3, so that even if the operation of the operating portion 511 is stopped there, It is possible to prevent the hook end 510a from entering the catch recess 501d of the rotating body 501 again.

  The first hook portion 510d of the hook body 510 in which the second hook portion 510e is pulled out of the catch recess 501d of the rotating body 501 and the first hook portion 510d is inserted into the return path 500f is at the fully open position of the lower lid body 10. In accordance with the turning movement, the vehicle moves in the return path 500f and exits forward from the terminal end 500h.

(Auxiliary hook body 512)
In this embodiment, the auxiliary hook body 512 provided on one of the pair of lid bodies 1 and 1 and the hook end 512a of the auxiliary hook body 512 are always positioned at the engaging position. Biasing means 512f for biasing the body 512.

  In the illustrated example, the auxiliary hook bodies 512 are provided on both the left and right sides of the lower lid body 10 so as to be positioned below the hook body 510 in a state where the lower lid body 10 is in the closed position. Yes. The auxiliary hook body 512 includes a shaft portion 512b that is long in the left-right direction of the lower lid body 10 built in the lower lid body 10, and a hook that protrudes from the outer end portion of the shaft portion 512b in a direction perpendicular to the shaft portion 512b. Arm 512c. The hook arm 512 c protrudes rearward from the inner surface side of the lower lid body 10. A hook nail 512d protruding downward is formed on the tip of the hook arm 512c, that is, the hook end 512a. Further, a push-up protrusion 512e protruding upward is formed at an intermediate portion of the hook arm 512c.

  Further, in the illustrated example, the auxiliary hook body 512 is urged so that the hook end 512a is always positioned by the urging means 512f, here the tension coil spring, at the engagement position where the hook end 512a can be engaged with the engagement portion 24 described later. In the example shown, it is directed downward). Then, the hook end 512a of the auxiliary hook body 512 causes the hooked portion 24 formed on the main body 2 to move along with the movement of one of the pair of lid bodies 1 and 1, here, the lower lid body 10 to the closed position. After overcoming the urging, the urging portion 24 is engaged with the engaged portion 24 by the urging.

  In addition, in the illustrated example, when the lower lid 10 is in the closed position, when the pushing portion 511a of the operation portion 511 is pushed, the interlocking piece 512g formed on the inner end portion of the shaft portion 512b of the auxiliary hook body 512 is formed. Is pushed from the front by the operation portion 511 so that the auxiliary hook body 512 is rotated upward against the biasing force. When the auxiliary hook body 512 is moved by the operation of the operation portion 511, the hooked portion 24 and the hook end 512a are disengaged from each other, and the hook protrusion 510e causes the hook body 510 to catch the rotating body 501. The hook end 510a is pushed out and lifted so as to come out of the recess 501d.

  Thus, in this embodiment, the hook end 512 a of the auxiliary hook body 512 is engaged with the engaged portion 24 of the main body 2, thereby maintaining the state of the lid body 1 in the closed position more stably. be able to. At the same time, by operating the operation portion 511, the engagement of the auxiliary hook body 512 and the engagement of the hook body 510 can be simultaneously released, and the lid body 1 can be swung toward the fully opened position.

  When the pushing of the operation portion 511 is stopped, the shaft portion 512b of the auxiliary hook body 512 is returned and rotated in a direction to position the hook end 512a at the engaging position by the biasing means 512f. The pushing portion 511a of the operation portion 511 is returned to the position before pushing by being pushed by the interlocking piece 512g. In the illustrated example, the operation portion 511 is provided with a push-in portion 511a having a long button shape on the upper and lower sides of the lower lid body 10, and the interlocking piece 512g of the right auxiliary hook body 512 is provided at the right end portion thereof. It is configured to push inside the lower lid 10 and push the interlocking piece 512g of the left auxiliary hook body 512 at the left end portion inside the lower lid 10.

(Other)
According to the lock mechanism 5 according to this embodiment, the pair of lid bodies 1 and 1 that are constantly urged so as to move toward the fully opened position by the urging force of the urging means 3 are disposed at the closed position. Can be firmly held by the rotating body 501 in the locked position so as not to move toward the fully opened position and can be brought into close contact with the opening 20 of the main body 2, so that a washing space such as a dishwasher or a washing machine can be used. It is suitable to be used as the lock mechanism 5 of the lid body 1 that closes the opening 20 that should be closed in a watertight manner, such as the opening 20.

Side configuration diagram showing an application example of the lock mechanism 5 Main part configuration diagram of FIG. Side configuration diagram showing an application example of the lock mechanism 5 Main part configuration diagram of FIG. Side configuration diagram showing an application example of the lock mechanism 5 Main part configuration diagram of FIG. Side configuration diagram showing an application example of the lock mechanism 5 Main part configuration diagram of FIG. Side configuration diagram showing an application example of the lock mechanism 5 Main part configuration diagram of FIG. Side configuration diagram showing an application example of the lock mechanism 5 11 is a configuration diagram of the main part of FIG. Side configuration diagram showing an application example of the lock mechanism 5 Main part configuration diagram of FIG. Side configuration diagram showing an application example of the lock mechanism 5 Main part configuration diagram of FIG. Isolated front view of passive part 50 The side view of the rotary body 501 seen from the AA arrow direction in FIG. The side view of the base 500 seen from the BB arrow direction in FIG. Configuration diagram showing arrangement of active parts 51 Top view of hook body 510

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cover body 2 Main body 20 Opening 3 Energizing means 4 Link means 5 Lock mechanism 50 Passive part 500 Base 501 Rotating body 501a Rotating shaft 501d Catch recessed part 501e Entrance 502 Tension spring body x Center line 51 Active part 510 Hook body 510a Hook end 511 Operation part 52 Return contact part

Claims (5)

A locking mechanism for releasably maintaining the state of the lid in the closed position,
The lid body is assembled to the main body so as to pivot from the closed position to the fully opened position, and is always urged to move toward the fully opened position by the urging means, and the lid body by the link means. Has a part that is moved with
The lock mechanism includes a passive part provided in the main body whose opening is closed by the lid, an active part provided in the lid, and a return abutment part of the passive part formed in the part,
The passive part includes a base fixed to the main body, a rotating body rotatably assembled to the base, and a tension spring body.
The rotating body has a catch recess, and is configured to rotate between a standby position where the entrance of the catch recess is directed forward and a lock position which is not directed forward,
The tension spring body has one end of the spring fixed to the rotating body on one side of the rotating shaft of the rotating body, and the other end of the spring is fixed to the base on the other side of the rotating shaft. And
The center line of the tension spring body is positioned on the front side of the rotation shaft at the standby position, and the center line of the tension spring body is positioned on the rear side of the rotation shaft at the lock position,
The active part has a hook body and an operation part of the hook body,
The hook body has a hook end that enters the catch recess of the rotating body in the standby position by the operation of moving the lid body to the closed position, and the rotating body is moved to the lock position by the insertion of the hook end, and the lid body is closed. The position is maintained,
The hook body is moved so that the hook end of the hook body comes out of the catch recess of the rotating body in the lock position by the operation of the operation portion, and the lid body in the closed position is moved by the movement of the hook body. It is moved to the fully open position by the biasing means,
A locking mechanism characterized in that the abutment portion for return comes into contact with the rotating body at the lock position from the rear by the movement of the lid body toward the fully open position. A lock mechanism for releasably maintaining the state of the pair of lids in the closed position,
The pair of lids are assembled to the main body so as to pivot from the closed position to the fully opened position, and are always urged to move toward the fully opened position by the urging means, and by the link means The pair of lids are designed to move together in the opening and closing directions,
The lock mechanism includes a passive part provided in a main body whose opening is closed by a pair of lids, an active part provided in one of the pair of lids, and a passive part provided on one side or the other side of the pair of lids. It has a butting part for returning parts,
The passive part includes a base fixed to the main body, a rotating body rotatably assembled to the base, and a tension spring body.
The rotating body has a catch recess, and is configured to rotate between a standby position where the entrance of the catch recess is directed forward and a lock position which is not directed forward,
The tension spring body has one end of the spring fixed to the rotating body on one side of the rotating shaft of the rotating body, and the other end of the spring is fixed to the base on the other side of the rotating shaft. And
The center line of the tension spring body is positioned on the front side of the rotation shaft at the standby position, and the center line of the tension spring body is positioned on the rear side of the rotation shaft at the lock position,
The active part has a hook body and an operation part of the hook body,
The hook body has a hook end that enters the catch recess of the rotating body at the standby position by the movement operation of the pair of lid bodies to one closed position, and the rotating body is moved to the lock position by entering the hook end. The state where one lid is in the closed position is maintained,
The hook body is moved so that the hook end of the hook body comes out of the catch recess of the rotating body in the lock position by the operation of the operation part, and the pair of lids in the closed position by the movement of the hook body The body is moved to the fully open position by the biasing means and the link means,
A locking mechanism, wherein the abutment portion for return comes into contact with the rotating body at the lock position from the rear by the movement of the pair of lids toward the fully open position.   In the state where the pair of lids are in the fully open position, a blocking portion located at the rear of the rotating body is formed in the link means so as to prevent the rotating body from being locked at the standby position toward the lock position. The locking mechanism according to claim 2, wherein the locking mechanism is provided.   On the base of the passive part, the forward path that guides the hook end of the hook body as the pair of lids move to one closed position, and the hook that is pulled out of the catch recess of the rotating body by operating the operation part The lock mechanism according to claim 2 or 3, wherein a cam groove is formed which comprises a return path for guiding the hook end of the body. An auxiliary hook body provided on one of the pair of lid bodies, and an urging means for urging the auxiliary hook body so that the hook end of the auxiliary hook body is always positioned at the engaging position,
As the hook end of the auxiliary hook body moves over the hooked portion formed on the main body against the biasing as the pair of lids move to the one closed position, While being hooked to the hooking part,
By operating the operation part, this auxiliary hook body is moved against the urging force,
Moreover, the auxiliary hook body that is moved by the operation of the operation portion is pushed so that the hook body is pulled out of the catch recess of the rotating body. Item 5. The locking mechanism according to any one of items 4 to 5.

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