JP5161249B2 - Open / close stay device - Google Patents

Description

  The present invention relates to an opening / closing stay device that stops and holds a cover of a casing, a window of a heavy machine, and the like, and particularly relates to an opening / closing stay device that can be stopped and held in a multistage manner.

  The conventional opening / closing stay device disclosed in Patent Document 1 includes a fixed body fixed to a cabinet, a wall, and the like, an arm fixed to a lid, a door, and the like of the cabinet via a connecting pin, and a longitudinal direction of the fixed body And a keeper pin that is slidably disposed in a guide groove extending in the direction.

JP 2002-61443 A

  According to the open / close stay device disclosed in Patent Document 1, when the open / close stay device is used as a cabinet open / close device, the first recessed support portion formed of a leaf spring in which the head of the keeper pin is fixed to the main body of the cabinet, and the first By elastically fitting the two recessed support portions, the lid can be held at two stages of opening, and can be closed at once from the fully opened state.

  However, in this stay device, the lid can be stopped and held only at two stages of opening, and cannot be stopped and held in multiple stages at a higher number of stages. Also, in the case of a relatively heavy lid, it may close more rapidly than expected, and there is a risk that a finger may be caught in the lid carelessly.

The present invention is an improvement of a conventional opening / closing stay device, and is an opening / closing stay device that can be stopped and held in multiple stages and that can be temporarily stopped when the lid is closed from a fully opened state. provide.

  In order to solve the above problems, the present invention is directed to the longitudinal direction (X), the insertion direction (A) and the extending direction (B), the first side portion (11), and the second side portion. An open / close stay device (10) having (12) and a pivot (15).

  A feature of the present invention is that a first arm (17) having a first end (13) and a second end (14) and an outer peripheral wall (23) and having a tube-shaped cross section is provided. , A slidably inserted into the first arm in the longitudinal direction and having a substantially U-shaped cross section, and a concave groove extending in the longitudinal direction with the third end portion (30) and the fourth end portion (33). 34), a first lock mechanism (L1), and a second lock mechanism (L2). The first lock mechanism includes the first end of the first arm. A plurality of locking holes (24) spaced apart in the longitudinal direction on the first side portion side near the portion, and the first pin (40) in the vicinity of the third end portion of the second arm via the first pin (40). It is supported in the groove of the two arms so as to be pivotable, and the locking hole is located on the first end side of the outer peripheral wall portion of the first arm. A first locking element (37) having a locking part (49) which is sequentially removably locked to the second end side; and the first locking element interposed together with the first locking element in the concave groove A longitudinally extending pin guide hole (39) for holding the element pivotable and allowing the first pin to be inserted through the first pin and allowing the first locking element to move in the longitudinal direction; A lock element holding body (36) having a lock element pressing portion (52) positioned opposite to the inner surface of the first arm on the first side portion side of the outer peripheral wall portion of the first arm; and A leaf spring (42) that constantly urges the locking portion toward the first side, the locking hole located on the second end side of the plurality of locking holes of the first arm, and the The concave portion of the second arm from the first side portion side of the outer peripheral wall portion between the fourth end portion and the fourth end portion. A first stopper located in the second arm, and the second locking mechanism is interposed in the concave groove of the second arm and has a second pin 44 in the vicinity of the fourth end of the second arm. A second locking element (45) supported so as to be pivotable and having substantially V-shaped first and second cam edges (70, 71) at both ends, and the first side of the outer peripheral wall portion A second stopper (28) extending from the portion side into the first arm and interposed in the concave groove of the second arm, and positioned in the vicinity of the second end of the outer peripheral wall portion of the first arm And a second engagement formed on the bottom (31) of the concave groove on the fourth end (33) side of the second arm facing the second locking element (29). A locking groove (35), and the locking element holding part of the locking element holding body is in front When the second arm is pulled in the extending direction from the first arm until it collides with the first stopper, the movement of the second arm in the extending direction is stopped. The two locking grooves are at least partially overlapped to communicate with each other and the second cam edge of the second locking element is in sliding contact with the second stopper, so that the second locking element pivots in the first direction. A part of the first cam edge is located in the communicating first and second locking groove holes, and the first pin moves in the extending direction along the pin guide hole. The first lock element is held in a state in which the locking portion is separated from the inner surface of the outer peripheral wall portion of the first arm by pressing the lock element pressing portion, and in the holding state, the second arm is Push slightly in the insertion direction By returning, the locking of the second stopper with respect to the second cam edge of the second lock element is released, and the second lock element pivots in the first direction to cause the first cam edge. Is locked to the opening edge of the first locking groove hole, the movement of the second arm in the insertion direction is temporarily stopped, and the second arm is pulled again in the extending direction. The second locking element pivots in the first direction, the side of the second arm comes into contact with the second stopper, and the second locking element is in an upright state. When the body is pushed back in the insertion direction until it collides with the pivot, the first pin moves through the pin guide hole in the insertion direction, and the first lock element is disengaged from the press of the lock element pressing portion. The locking portion is the leaf spring. It is in contact with the inner surface of the outer peripheral wall portion on the first side portion side.

  As another embodiment of the present invention, the lock element holding member connects the side wall portions (50) in which the pin guide holes are formed and the side wall portions on the fourth end side. An end (51), and an opening (53) is formed between the locking element pressing portion and the end, and after the locking element pressing portion abuts on the first stopper, A first pin slides in the extending direction in the guide hole and an insertion portion (48) extending to the fourth end side of the first locking element is inserted into the opening so as to be insertable / removable. The

  In the present invention, since the opening and closing stay device includes the first and second lock mechanisms, the second arm can be reliably stopped and held at a required position in a multi-step manner with a relatively simple configuration. Even when the lid is attached to a relatively heavy lid, it stops once without being instantly closed from the fully opened state, so that it is possible to avoid a situation in which a finger is accidentally caught in the lid.

The side view which shows the usage condition of the stay apparatus for opening and closing. The perspective view of the stay apparatus for opening and closing. The disassembled perspective view of the stay apparatus for opening and closing. (A) IV-IV sectional view taken on the line of FIG. (B), (c) Sectional drawing similar to Fig.4 (a) which shows the state by which the latching | locking part of the 1st lock element was latched by the latching hole. (A)-(c) Sectional drawing similar to Fig.4 (a) which shows the aspect which a 2nd arm slides in a longitudinal direction inside a 1st arm toward a 2nd edge part. (A), (b) Sectional drawing similar to Fig.4 (a) which shows the aspect which a 2nd arm slides in a longitudinal direction toward the 1st edge part within the 1st arm.

  FIG. 1 is a side view showing how the opening / closing stay device 10 is used, FIG. 2 is a perspective view of the opening / closing stay device 10, and FIG. 3 is an exploded perspective view of the opening / closing stay device 10. In FIG. 1, for convenience of explanation, a state in which the lid 16 b of the cabinet 16 is opened is indicated by a virtual line.

  The opening / closing stay device 10 has a substantially rectangular parallelepiped shape, and has a longitudinal direction X and a lateral direction Y, a first side portion 11 and a second side portion 12, a first end portion 13 and a second end portion 14. The first arm 17 connected to the main body 16a of the cabinet 16 via the pivot 15 and the first arm 17 slidably inserted into the first arm 17 and connected to the lid 16b of the cabinet 16 via the pivot 18. 2 arms 19. The first and second arms 17 and 19 can pivot clockwise and counterclockwise via the pivots 15 and 18, and can open and close the lid 16 b of the cabinet 16 by the pivot. The arm 19 can stop and hold the lid 16b at a given opening.

  The first arm 17 is formed in a flat rectangular tube, and has a first opening end 21 and a second opening end 22, and an outer peripheral wall portion 23. A plurality of locking holes 24 (24 a, 24 b, 24 c, 24 d) that are spaced apart from each other in the longitudinal direction Y are formed in a portion of the outer peripheral wall portion 23 in the first side portion 11. At a position biased toward the second end portion 14 side of the outer peripheral wall portion 23, a first stopper 26 and a through hole 27, which are partly cut off from the outer peripheral wall portion 23 and bent into the first arm 17, are formed. Further, a plate-like second stopper 28 extending from the inner peripheral surface of the outer peripheral wall 23 to the inside of the first arm 17 and the second arm 19 is fixed to the second end 14 a side of the through hole 27. Has been. Further, a first locking groove hole 29 extending in the longitudinal direction X is formed on the second side portion 12 side of the outer peripheral wall portion 23.

  The second arm 19 is formed in a U-shaped cross section, and is inserted in the first arm 17 so as to be slidable in the longitudinal direction X. The second arm 19 is located on the first end 13 side of the first arm 17. It has the 4th end part 33 located in the edge part 30 and the 2nd edge part 14 side, the bottom part 31, and the both-sides wall part 32 extended in the longitudinal direction X along the both sides of the bottom part 31, 3rd and 4th edge part 30, 33 and the side facing the first side portion 11 are opened, and a concave groove 34 extending in the longitudinal direction Y is formed by the side wall portions 32 and the bottom portion 31. A second locking groove 35 extending in the longitudinal direction X is formed in the bottom 31.

<First lock mechanism L1>
On the first end 13 side of the stay device 10, the lock element holding body 36, the first lock element 37 fitted therein, the locking groove 24, and the bottom 31 are fixed, and the first lock element 37 is always attached. Both side walls of the second arm 19 through a first pin 40 inserted through the pin hole 38 of the leaf spring 42 urging toward the first side portion 11, the first stopper 26, and the first locking element 37. A first lock mechanism L1 configured with a pin guide hole 39 for supporting the portion 32 is formed.

  The first locking element 37 has a flat plate shape that is curved toward the second side portion 12, and includes a protrusion 46 that protrudes toward the third end portion 30, a top portion 47 that extends in the longitudinal direction X, and the top portion 47. It has a part and the insertion part 48 which protrudes in the 4th edge part 33 side. Further, a locking end 49 is provided between the protrusion 46 and the top 47.

  The lock element holding body 36 includes both side plate portions 50 facing and separating in the lateral direction Y, an end portion 51 where one of the side plate portions 50 bends to the other side on the fourth end portion 33 side, and both side plate portions 50. And a lock element pressing portion 52 that protrudes toward the fourth end portion 33 side. Between the lock element pressing part 52 and the end part 51, an opening 53 into which the insertion part 48 of the first lock element 37 is removably inserted is defined.

  The leaf spring 42 has a fixed portion 61 welded to the bottom 31 of the second arm 19 and an inclined portion 62 that extends obliquely from the fixed portion 61 to the first side portion 11 side. The tip of the inclined portion 62 is bent toward the second side portion 12, and the first locking element 37 abuts against the protruding portion 46 and is constantly biased toward the first side portion 11.

<Second locking mechanism L2>
On the fourth end 33 side of the recessed groove 34 of the second arm 19, the second locking element 45, the second stopper 28, the second locking groove hole 35 of the bottom 31 of the second arm 19, and the first A second locking mechanism L <b> 2 configured from the first locking groove 29 of the outer peripheral wall portion 23 of the arm 17 is formed.

  The second locking element 45 has substantially V-shaped first and second cam edges 70 and 71, and is pivotally supported by the second arm 19 via a pin 44 inserted through a pin hole 74. . The second locking element 45 is disposed opposite to the second locking groove hole 35 of the second arm 19, and the length dimension in the longitudinal direction X and the short direction Y is the length of the second locking groove hole 35. Slightly smaller than their dimensions.

  4A is a cross-sectional view taken along the line IV-IV in FIG. 2, and FIGS. 4B and 4C are diagrams showing a state in which the first lock element 37 is locked in the locking holes 24a and 24d, respectively. 5A to 5C, the second arm 19 slides in the first arm 17 in the longitudinal direction X toward the second end portion 14 side. FIG. 6A and FIG. 6B are views of the second arm 19 that slides in the longitudinal direction Y toward the first end portion 13 in the first arm 17. It is sectional drawing similar to Fig.4 (a) which shows the mode which moves. In FIG. 4A, the direction in which the second arm 19 is inserted into the first arm 17 is indicated by an arrow A, and the extending direction is indicated by an arrow B.

  As shown in FIG. 4A, in a state where the entire second arm 19 is inserted into the first arm 17 (a state where the lid 16b of the cabinet 16 is closed), the engaging portion of the first lock element 37 is retained. 49 is biased toward the first side portion 11 by the leaf spring 42 and is in contact with the inner peripheral surface of the outer peripheral wall portion 23 of the first arm 17. On the other hand, the second lock 45 is in a recumbent state (a state in which the first and second cam edge portions 70 and 71 are directed in the longitudinal direction Y), and one side portion thereof is located in the locking groove hole 35 of the second arm 29. doing.

  When the lid 16b of the cabinet 16 is slightly opened, in other words, when the second arm 19 is slightly pulled in the extending direction B, the second arm 19 slides in the first arm 17 in the longitudinal direction Y. The engaging portion 49 of the first locking element 37 is engaged with the engaging hole 24a and protrudes from the first side portion 11 side. At this time, as shown in FIG. 4B, the protrusion 46 comes into contact with the outer peripheral wall 23 and the engaging portion 49 comes into contact with the opening edge of the engaging hole 24a. The movement in X is restricted, and the second arm 19 is stopped and held at that position.

  Further, when the lid 16a of the cabinet 16 is opened, a part of the top portion 47 of the first lock element 37 is in contact with the opening edge of the locking hole 24a. This portion is pushed down toward the second side portion 12 against the urging of the leaf spring 42, and the locking portion 49 is withdrawn from the locking hole 24a to be unlocked. By further pulling and sliding the second arm 19 in the extending direction B, the locking portion 49 is inserted into the locking hole 24b positioned next to the locking hole 24a while being urged by the leaf spring 42. The second arm 19 is stopped and held at this position. In this way, by sequentially performing the same operation for each of the plurality of locking holes 24a, 24b, 24c, and 24d arranged in the longitudinal direction Y, the lid 16b of the cabinet 16 is moved in a plurality of steps at a required opening position. Can be held to stop.

  FIG. 4C shows a state in which the locking portion 49 of the first locking element 37 is locked in the locking hole 24d located on the second end portion 14 side, and FIG. As shown, when the second arm 19 is further pulled in the extending direction B from this state, the end 52a of the lock element pressing portion 52 of the lock element holding body 36 comes into contact with the first stopper 26 of the first arm 17 and is locked. The movement of the element holding body 36 in the extending direction B is restricted, and the second lock element 45 pivots counterclockwise when the second cam edge 71 is in sliding contact with the corner of the second stopper 28. And stop. At this time, the second locking groove hole 35 of the second arm 19 and the first locking groove hole 29 of the first arm 17 are in communication with each other, and the first cam edge 70 side is located within these, The second lock element 45 is stopped and held in a slightly tilted state. The first lock element 37 is moved in the lock element holding body 36 by sliding the pin 40 in the extending direction B in the pin guide hole 39 after the lock element holding body 36 contacts the second stopper 28. It moves in the extending direction B, the top portion 47 abuts on the lock element pressing portion 52 and is separated from the outer peripheral wall portion 23 of the first arm 17, and the insertion preventing portion 48 is inserted into the opening 53 of the lock element holding body 36. The Thereby, the 1st lock element 37 is stably hold | maintained in the state separated from the outer peripheral wall part 23 against the urging | biasing of the leaf | plate spring 42, and a 1st lock mechanism becomes non-function.

  As shown in FIG. 5 (b), when the second arm 19 is slid in the insertion direction A by the weight of the lid 16b of the cabinet 16 or a force to close the lid 16b from such a state, the second lock element 45 is moved. The second cam edge 71 is separated from the second stopper 28. At substantially the same time, the second locking element 45 is counteracted by the crotch portion of the first cam edge 70 slidingly contacting the opening edge 29a of the first locking groove hole 29 of the outer peripheral wall portion 23 of the first arm 17. The second cam 19 is pivoted slightly clockwise and held in a state where the first cam edge 70 is in contact with the opening end 29a, and the second arm 19 stops.

  From this state, when the lid 16b is swung in the opening direction again, in other words, when the lid 16b is fully opened by pulling the second arm 19 in the extending direction B, as shown in FIG. The first cam edge 70 of the second lock element 45 is disengaged from the opening end 29a of the first locking groove 29, so that the second lock element 45 is in an upright state, and its side is the second stopper 28. Abut. As shown in FIG. 6 (a), when the cover 16b is turned again in the closing direction, in other words, when the second arm 19 is pushed in the insertion direction A, the first cam edge portion of the second lock element 45 is turned on. When 70 abuts against the opening end 29a of the locking groove 29 of the first arm 17, the second locking element 45 is turned sideways and turned counterclockwise.

  As shown in FIG. 6B, the second lock element 45 turns counterclockwise and lies on its side, and when the cover 16b is completely closed, the lock element holding body 36 collides with the pivot 15. The second arm 19 returns to the original state in the fully closed state.

  According to the present invention, since the second arm 19 can be locked at a required portion in the longitudinal direction X of the first arm 17 by the first lock mechanism L1, the lid 16b of the cabinet 16 is multi-staged at a plurality of opening positions. Can be stopped. Further, when the lid 16b is closed by the function of the second lock mechanism L2 after the first lock mechanism L1 is deactivated, the lid 16b is not instantaneously closed due to its own weight, etc. It is possible to avoid a situation in which a finger is inadvertently caught between the relatively heavy lids 16. Furthermore, since the first lock mechanism L1 is rendered non-functional after being stopped, the lid can be smoothly closed without stopping at each stage. In the present embodiment, four locking holes 24a, 24b, 24c, and 24d are formed in the first arm 17, but a plurality of locking holes smaller than or equal to it may be formed. .

DESCRIPTION OF SYMBOLS 10 Opening / closing stay apparatus 11 1st side part 12 2nd side part 13 1st end part 14 2nd end part 15 Pivot 17 1st arm 19 2nd arm 23 Outer peripheral wall part 24 of 1st arm Locking hole 26 1st Stopper 28 Second stopper 29 First locking groove 30 Third end 31 Bottom 33 Fourth end 34 Concave groove 35 Second locking groove 36 Lock element holder 37 First lock element 39 Pin guide hole 40 First 1 pin 42 leaf spring 44 second pin 45 second lock element 48 insertion portion 49 locking portion 50 both side wall portions 51 of the lock element holding body 51 end 53 of the lock element holding body opening 70 first cam edge 71 second Cam edge portion A Insertion direction B Extension direction L1 First lock mechanism L2 Second lock mechanism X Longitudinal direction

Claims (2)

Open / close stay device (10) having a longitudinal direction (X), an insertion direction (A) and an extending direction (B), a first side portion (11), a second side portion (12), and a pivot (15). ) And
A first arm (17) having a first end (13) and a second end (14), and an outer peripheral wall (23), and having a cross-sectional shape of a tube mouth, and the first arm in the longitudinal direction A second arm having a substantially U-shaped cross section and having a third end portion (30) and a fourth end portion (33) and a groove (34) extending in the longitudinal direction. 19), a first locking mechanism (L1), and a second locking mechanism (L2),
The first locking mechanism includes a plurality of locking holes (24) spaced apart in the longitudinal direction on the first side portion side of the first arm near the first end portion, and the third end of the second arm. In the vicinity of the portion, the first arm (40) is pivotally supported in the concave groove of the second arm via the first pin (40), and the locking hole is on the first end side of the outer peripheral wall portion of the first arm. A first locking element (37) having a locking part (49) which is detachably locked from the second end side to the second end side, and the first locking element is interposed in the concave groove together with the first locking element. A pin guide hole (39) extending in the longitudinal direction for holding the locking element in a pivotable manner and allowing the first pin to be inserted and through the first pin to move the first locking element in the longitudinal direction. And facing the inner surface of the outer peripheral wall portion of the first arm on the first side portion side. A lock element holding body (36) having a lock element pressing portion (52) to be placed, a leaf spring (42) that constantly biases the locking portion of the first lock element toward the first side portion, Of the plurality of locking holes of the first arm, between the locking hole located on the second end side and the fourth end, the second side from the first side portion side of the outer peripheral wall portion. A first stopper located in the groove of the arm,
The second lock mechanism is interposed in the concave groove of the second arm and is supported so as to be pivotable via a second pin 44 in the vicinity of the fourth end of the second arm, and at both ends. A second locking element (45) having substantially V-shaped first and second cam edges (70, 71), and extending from the first side of the outer peripheral wall into the first arm. A second stopper (28) interposed in the concave groove of the two arms, a first locking groove hole (29) located in the vicinity of the second end of the outer peripheral wall portion of the first arm, A second locking groove (35) formed in the bottom (31) of the concave groove on the fourth end (33) side of the second arm facing the second locking element,
When the second arm is pulled in the extending direction from the first arm until the locking element pressing portion of the locking element holding body collides with the first stopper, the second arm moves in the extending direction. The movement is stopped, and at that time, the first and second locking groove holes are at least partially overlapped to communicate with each other, and the second cam edge portion of the second locking element is in sliding contact with the second stopper. The second locking element is pivoted in the first direction so that a part of the first cam edge is located in the communicating first and second locking groove holes, and the first pin is the pin By moving in the extending direction along the guide hole, the first locking element is held in a state where the locking portion is separated from the inner surface of the outer peripheral wall portion of the first arm by pressing the locking element pressing portion. And
In the holding state, by slightly pushing back the second arm in the insertion direction, the locking of the second stopper with respect to the second cam edge of the second lock element is released, and the second lock The element pivots in the first direction and the first cam edge is locked to the opening edge of the first locking groove, thereby temporarily moving the second arm in the insertion direction. Stopped,
When the second arm is pulled in the extending direction again, the second locking element pivots in the first direction, the side of the second arm abuts on the second stopper, and the second locking element It ’s upright,
Further, when the lock element holding body is pushed back in the insertion direction until it collides with the pivot, the first pin moves through the pin guide hole in the insertion direction, and the first lock element is moved to the lock element pressing portion. 2. The opening / closing stay device according to claim 1, wherein the locking portion comes into contact with an inner surface of the outer peripheral wall portion on the first side portion side by urging of the leaf spring.   The lock element holding body has both side wall portions (50) in which the pin guide holes are formed, and an end portion (51) connecting the both side wall portions on the fourth end side, and the lock element An opening (53) is formed between the presser part and the end part, and after the lock element presser part comes into contact with the first stopper, the first pin extends in the guide hole in the extending direction. The opening / closing stay device according to claim 1, wherein an insertion stop portion (48) that slides toward and extends toward the fourth end portion of the first lock element is inserted into the opening in a removable manner.

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