JP2013064285A - Latch device and fittings equipped with the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a latch device that can simply adjust the projection amount of a latch.SOLUTION: A latch device 20 drives a rod 40 through operation of a handle 61, makes a latch 30 project from a device body 22 or sunk into the device body 22. In the latch device 20, the latch 30 is slidably attached and fixed to the rod 40 so that the projection amount can be changed.

Description

  The present invention relates to a latch device in which a latch protrudes from and immerses in a device main body, and a fitting including the device.

  Latch devices (latch locks) are widely used for doors of buildings such as houses.

  This type of latch device is accommodated in the door end side end of the door, and the latch portion is biased by a spring. In other words, the latch arranged at the tip of the latch portion normally protrudes from the opening of the latch device by the biasing force of the spring, and is configured to be immersed in the device body when the handle is operated. Yes. By such a latching operation, the door can be opened and closed with respect to the door frame, and is closed to the door frame in a protruding state.

  Recently, the position of the latch can be adjusted with a pinion so that the protruding amount of the latch can be changed, and the rod of the latch part is configured with a bolt shaft, and the effective length of the rod can be adjusted by screwing with the nut A thing etc. are proposed (refer patent documents 1 and 2).

  If the amount of protrusion of the latch can be changed in this way, even if the door frame for installing the door is larger than the allowable error and the latch is not sufficiently locked in the latch receiving recess of the door frame when the door is closed, the protrusion of the latch Increasing the amount can improve the lack of locking.

Japanese Patent Laid-Open No. 09-242398 FIG. JP 2009-174292 A FIG. 2 etc.

  However, in any of the above documents, since the internal structure of the latch device is complicated, the device may be increased in size. Therefore, it is unsuitable for incorporating in a fitting such as a door having a limited thickness dimension. Furthermore, there is also a problem that it is difficult to perform the adjustment operation once it is incorporated into the door.

  The present invention has been proposed in view of such circumstances, and an object thereof is to provide a latch device that can easily adjust the protrusion amount of the latch and a fitting using the device.

  In order to achieve the above object, a latch device according to the present invention is a latch device in which a rod is driven by a handle to project the latch from the device body or to be immersed in the device body. It is slidably attached to the rod so as to be changeable, and is fixed.

  In the present invention, a latch holding plate having a screw hole protrudes from the end of the rod on the latch side, and the latch extends in the recess and the recessed portion that accommodates the latch holding plate. The latch may be configured to be screwed to the latch holding plate accommodated in the recess through the long hole.

  Further, in the present invention, the latch is configured such that one side surface is a guide surface inclined downward toward the protruding direction and the other side surface is a locking surface, and a long hole is formed at the bottom portion on the guide surface side. The groove having the groove may be formed along the protruding and retracting direction, and the screw head may be hidden by the groove.

  Further, in the present invention, the latch may be urged by urging means disposed between the rod and the bottom of the groove may be inclined downward toward the protruding direction.

  Moreover, the fitting concerning this invention is provided with the latch apparatus of the said either structure.

  According to the latch device of the present invention, the configuration as described above makes it easy to adjust the protruding amount of the latch, and even when a slightly larger door frame exceeding the allowable error is constructed, The amount of protrusion can be increased.

It is a figure which shows the principal part of the latch apparatus which concerns on one Embodiment of this invention, (a) is a front view, (b) is a disassembled perspective view. (A) is an expanded sectional view of the latch corresponding to the BB line of Fig.1 (a), (b) is an expanded sectional view which showed the coupling | bonding state of a latch and a rod. (A) and (b) are the front views of the principal part which showed two examples of the adjustment mode of the protrusion amount of a latch. It is the schematic diagram which showed the construction state of the door provided with the latch apparatus, (a) is a schematic front view, (b) is the partially broken schematic sectional drawing corresponding to CC arrow in (a). It is. It is operation | movement explanatory drawing of a latch, (a) (b) is a longitudinal cross-sectional view of the latch apparatus which each showed each state of the protrusion of a latch, and immersion. (A) (b) (c) is principal part explanatory drawing of the latch apparatus which concerns on other 3 embodiment of this invention, (a) is principal part cross-sectional view, (b) (c) is principal part longitudinal section FIG.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  In this embodiment, as shown to Fig.4 (a), the example which installed the door 1 in the door frame 4 attached to the opening part 3a opened in inner walls 3, such as a residence, is shown. The opening 3 a is provided as an entrance on the inner wall 3 that partitions the inner space 9 such as a private room or a toilet and the outer space 8 (for example, a hallway), and is closed or opened by the door 1.

  The door 1 includes a flat door panel 10, a latch device 20 accommodated in the door panel 10, and a handle device 60 connected to the latch device 20.

  As shown in FIG. 4 (b), the door panel 10 is hinged at one side end to one vertical frame 4 b constituting the door frame 4, and the door 1 opens and closes the hinge pin of the hinge 7. Opened and closed as a fulcrum. In the illustrated example, a state is shown in which the door 1 is constructed with the right end in a state where the door 1 is pushed open from the inner space 9 as an opening / closing fulcrum.

  A latch receiving recess is formed on the surface of the vertical frame 4a on the door end (open end) side facing the side edge of the door panel 10 at a position corresponding to a latch described later. In addition, in FIG.4 (b), the code | symbol 6 is the door stop member provided in each vertical frame 4a, 4b.

  A latch device accommodating portion 11 that accommodates the latch device 20 is provided at a side end portion of the door panel 10 on the door end side.

  Further, as shown in FIG. 4B, the handle device 60 includes a pair of handles (handles 61 and 61) arranged so as to face the inner and outer surfaces of the door panel 10 with the door panel 10 interposed therebetween. Provided, and they are connected by a connecting shaft 62. In the figure, reference numeral 63 denotes a handle seat.

  The connecting shaft 62 of the handle device 60 passes through the device main body 22 of the latch device 20 through a hole (not shown) provided in the latch device accommodating portion 11 of the door panel 10. 50 (see FIG. 5A).

  The latch device 20 includes a device main body 22 in which each part is accommodated in a case 23, and a front plate 21 arranged substantially flush with the door end side end surface of the door panel 10. A side end piece 24 is provided at a side end portion of the apparatus main body 22 on the door end side, and an opening 25 is formed in the side end piece 24 and the front plate 21 so as to communicate both.

  The apparatus main body 22 is configured by housing a case 23 with a latch portion A that moves the latch 30 in and out, and a latch drive portion 50 that drives the latch portion A by a handle operation. In a normal state in which the handle 61 is not operated, the latch portion A is biased by the spring 45 and protrudes from the opening 25. When the handle 61 is operated and when the latch 30 is pressed with a finger, The spring 45 is compressed and immerses inward from the opening 25.

  As shown in FIG. 1A, the latch portion A is disposed at the tip of the latch portion A, and has a latch 30 that is substantially entirely exposed to the outside in a protruding state, and a latch base 41 that connects the latch 30. Rod 40.

  1A and the like, in the drawings and the following description, the direction in which the latch 30 protrudes is the protruding direction X1, and the opposite direction is the immersion direction X2, which represents both directions. In this case, it is described as an appearance direction X.

  The main body of the rod 40 is made of a cylindrical bar, and a disc-shaped seat plate 42 is provided at an end portion on the driving side driven by the latch driving portion 50, and a latch base portion 41 is provided on an end portion on the latch side. Is provided. The intermediate portion of the rod 40 is supported by a guide plate 46 integrated with the case so that the rod 40 can slide. A spring 45 (not shown in FIG. 1, refer to FIG. 5) mounted on the rod 40 is disposed between the guide plate 46 and the latch base 41.

  Details of the structure and operation of the latch driving unit 60 for operating the latch unit A by operating the handle will be described later in the description of FIG.

  The latch 30 has a guide surface 30a whose one side surface (the surface on the inner space 9 (see FIG. 4B) side in FIG. 1B) is inclined downward toward the protruding direction X1, and the other side surface. The surface on the outer space 8 side in FIG. 1B is the locking surface 30b. The guide surface 30a is a surface for contacting the vertical frame 4a when the door 1 is closed, and the latch 30 is inserted into the guide surface 30a. This is the aspect.

  The latch base 41 is a member that directly holds the latch 30. On the latch mounting surface of the base body 41 a, a latch holding plate 41 b having a screw hole 41 c is provided near the latching surface 30 b side of the latch 30. Projected to head toward. In addition, a mounting hole 41d for fixing one end of the coil spring 38 is formed on the latch mounting surface of the base body 41a near the guide surface 30a side of the latch 30.

  On the other hand, the latch 30 has a structure in which a recess 33 for accommodating the latch holding plate 41b is formed on the surface facing the latch base 41, and the groove 31 is formed on the guide surface 30a.

  Further, the bottom 31a of the groove 31 is inclined downward toward the protruding direction X1, and the bottom 31a is formed with a long hole 32 that extends along the protruding and retracting direction X and communicates with the recess 33.

  In the example shown in the figure, the recess 33 is also opened on the side of the locking surface 30a, but the recess 33 may be closed on the side of the locking surface 30a. In addition, for example, the upper and lower surfaces of the latch 30 (the surfaces arranged up and down when the door is installed) and the closing plate covering the locking surface 30b are latched so that the opening on the locking surface 30b side of the recess 33 is not exposed. You may make it attach to 30.

  A mounting hole 34 for fixing the other end of the coil spring 45 is formed at a position corresponding to the mounting hole 41 d of the latch base 41 on the surface of the latch 30 facing the latch base 41.

  The coil spring 38 may not be connected at both ends thereof, either one may be connected to the latch 30 or the latch base 41, or both ends may be arranged not to be connected. That is, the coil spring 38 may be disposed so as to be held between the latch 30 and the latch base 41 and bias the latch 30. Further, the urging means for urging the latch is not limited to the coil spring 38, and for example, an elastic body such as rubber may be used.

  As shown in FIG. 2B, the latch 30 has a bolt 35 (tapping) via a long hole 32 provided in the bottom 31a of the groove 31 with respect to the latch holding plate 41b accommodated in the recess 33. It is fixed with screws.

  In this way, since the latch 30 is screwed and fixed through the long hole 32, it can be slidably fixed at an appropriate position from one end to the other end of the long hole 32, as shown in FIG. It is also possible to hold the latch 30 in a state where a gap S is interposed between the latch 30 and the latch base 41. Note that the state indicated by a two-dot chain line in FIG. 2B is a case where the protrusion amount of the latch 30 is minimized, and the latch 30 and the latch base 41 are closest to each other.

  Here, the protruding amount of the latch 30 is the distances L1 and L2 (see FIG. 3) from the opening 25 (the front surface of the front plate 21) to the tip position of the latch 30 in a state in which the latch 30 in the normal state protrudes. is there. Each of FIGS. 3A and 3B is a front view of a two-state example in which the protruding amount of the latch is different. 3A and 3B, one two-dot chain line T1 represents the side end of the vertical frame 4a on the door end side, and the other two-dot chain line T2 represents the door panel 10. Represents the side edge of the door end side.

  As described above, the latch portion A has a structure in which the latch 30 is slidably fixed with respect to the rod 40 and the protruding amount of the latch 30 from the opening 25 can be changed. The amount can be made to protrude larger than the specified value (the state shown in FIG. 3A).

  The width dimension between the vertical frames 4a and 4b of the door frame 4 may be formed larger than the tolerance dimension than the width dimension of the door panel 10 due to construction errors. Moreover, even if the dimensional difference is to be adjusted on the hinge 7 side, a gap exceeding the error range may still be formed between the vertical frame 4a on the door tip side and the end of the door panel 10 on the door tip side. In that case, only a part of the latch 30 is received in the latch receiving recess 5 and the locking becomes insufficient (see FIG. 3A).

  However, according to the configuration of the latch device 20, since the projection amount of the latch 30 can be increased as described above, the projection amount is adjusted so that the latch 30 is securely locked to the latch receiving recess 5. (See FIG. 3B).

  And since it is the structure which can adjust protrusion amount only by screwing of the latch 30, it can adjust quickly and easily at the site of door construction. Moreover, since it is not necessary to change the inside of the latch apparatus 20 for adjustment of protrusion amount, it can adjust easily even after incorporating in the door panel 10. FIG. For example, when the door frame 4 is deformed due to a secular change after construction and a gap is formed, the housekeeper can easily adjust.

  Further, since the mechanism for adjusting the protrusion amount is not built in the case 23, the latch device 20 is not increased in size. Therefore, it is not necessary to increase the dimension of the latch device accommodating portion 11 of the door panel 10, and the conventional door panel 10 can be used without changing the specifications.

  Furthermore, in the example of this embodiment, since it is the structure screwed by the bottom part 31a of the ditch | groove 31, the bolt head of the volt | bolt 35 does not protrude outward of the latch 30, and there is no possibility that an aesthetics may be impaired by the volt | bolt 35. There is no possibility of adversely affecting the opening / closing operation of the door 1.

  In the present embodiment, since the bottom 31a of the groove 31 is inclined, a long hole 32 having a sufficient length can be formed, and the bottom 31a of the groove 31 is thick enough to provide sufficient strength. Can be formed. Of course, in order to facilitate the screwing operation, the surface of the bottom 31a may be formed to be parallel to the latch holding plate 41b accommodated in the recess 33.

  In this way, since the inclined groove 31 is formed with the inclined bottom portion 31a, a force is applied so that the bolt head slides on the inclined surface and the latch 30 approaches the rod 40 after being screwed. Since it is arranged, the fixed position can be maintained by the biasing force.

  Regarding the holding of the latch 30 by the latch holding plate 41b, in addition to the above, various modes can be assumed as shown in, for example, FIGS.

  The latch 30 shown in FIG. 6 (a) has a configuration in which a bolt 35 is inserted and fixed from the locking surface 30b side, a recess 33 is formed on the guide surface 30a side, and a concave groove is formed on the locking surface 30b side. 31 is formed. A long hole 32 communicating with the recess 33 is formed in the bottom 31 a of the groove 31.

  In addition, the latch 30 shown in FIG. 6B has a configuration in which the bolt 35 is inserted and fixed in the vertical direction. Has been. A long hole 32 communicating with the recess 33 is formed in the bottom 31 a of the groove 31.

  Further, the latch 30 shown in FIG. 6C is also configured to be fixed by inserting the bolt 35 in the vertical direction. However, the recess for accommodating the latch holding plate 41b is not formed, and the latch holding plate 41b It is attached so as to contact the lower surface of the latch 30. In this case, it goes without saying that the latch receiving recess 5 (see FIG. 4) of the vertical frame 4 a needs to be dimensioned to accommodate the latch 30 together with the latch holding plate 41 b disposed below the latch 30.

  The latch 30 is not formed with the concave groove 31 or the recess 33 but is provided with a long hole 32 that leads from one side end to the other side end so that both the bolt head and the latch holding plate 41b are outside the latch 30. It is good also as a structure which protrudes toward the direction. According to this configuration, since the recess 33 and the groove 31 are not provided, the strength of the latch 30 can be improved.

  6 (a) to 6 (c) show an example in which the coil spring 38 is not provided between the latch 30 and the latch base 41. Similarly to the example of FIG. 1, the bottom 31a of the groove 31 is an inclined surface. The latch 30 may be biased by the coil spring 38.

  The various latch devices 20 described above are configured to hold the latch 30 with one latch holding plate 41b. However, a plurality of latch holding plates may be used to maintain the strength. For example, two spaced latch holding plates may be accommodated in individual recesses.

  Next, the details of the operation of the latch unit A by the handle operation and the structure and operation of the latch drive unit 50 that drives the latch unit A will be described with reference to FIG. Since the configuration of the latch portion A has been described above, the description thereof is omitted.

  The latch drive unit 50 includes a hub 51 that rotates about the connecting shaft 62 of the handle device 60 (see FIG. 4), an operating spring 52 that biases the hub 51 counterclockwise, and the operating spring 52. And a moving body 53 to be accommodated.

  The central portion 51a of the hub 51 is provided with a square hole 51b that penetrates the connecting shaft 62 of the handle device 60. The upper protruding portion 51c is formed above the central portion 51a, and the lower protruding portion is formed below the central portion 51a. Each part 51d is formed in an arm shape.

  The upper protruding portion 51c is divided into two forks (one is not shown in the figure), and is inserted so that the rod 40 of the latch portion A is sandwiched therebetween, and the tip of the upper protruding portion 51c is the rod 40. The seat plate 42 is in contact with and engaged.

  On the other hand, the lower protruding portion 51d is in contact with the moving body 53, and normally receives the urging force of the operating spring 52 through the moving body 53, and is also in contact with the stopper 54 formed in the case 23. That is, in the normal state, the hub 51 is held in a state where the lower protruding portion 51 d is sandwiched between the moving body 53 and the stopper 54.

  In this normal time, the spring 45 urges the latch portion A in the projecting direction X1 to project the latch 30 outward from the opening 25, while the seat plate 42 of the rod 40 urges the actuating spring 52. In contact with the upper projecting portion 51c of the hub 51 that is receiving, it is in a locked state. Therefore, the latch 30 is maintained in a state where it protrudes by a predetermined protrusion amount (see FIG. 5A).

  When the hub 51 is rotated clockwise by the handle operation, the upper protruding portion 51c of the hub 51 pushes the seat plate 42 of the rod 40 in the immersion direction X2 of the latch 30, and the spring 45 is compressed and latched. 30 is immersed in the apparatus main body 22 (see FIG. 5B).

  Although not shown in FIG. 5, when the latch 30 hits the vertical frame 4 a (see FIG. 4) and is immersed in the apparatus main body 22 by closing the door, the latch portion A moves in the immersion direction X <b> 2. Since the urging force of the operating spring 52 is acting on the hub 51, the state shown in FIG.

  Although the example of embodiment which attached the latch apparatus 20 to the door 1 was shown above, you may apply to other joinery and furniture.

DESCRIPTION OF SYMBOLS 1 Door 20 Latch apparatus 22 Apparatus main body A Latch part 30 Latch 30a Guide surface 30b Locking surface 31 Groove 31a Bottom part 32 Long hole 33 Recess 35 Bolt (screw)
38 Coil spring 40 Rod 41 Latch base 41b Latch holding plate 41c Screw hole 60 Handle device 61 Handle (grip)
X Immersion direction X1 Projection direction X2 Immersion direction

Claims (5)

In the latch device that drives the rod by the handle operation to protrude the latch from the device main body or to be immersed in the device main body,
The latch device is slidably attached to and fixed to the rod so that the protrusion amount can be changed. In claim 1,
A latch holding plate having a screw hole protrudes from the end of the rod on the latch side,
The latch includes a recess that accommodates the latch holding plate, and a long hole that extends in a protruding and retracting direction and communicates with the recess, and the latch has a long hole in the latch holding plate that is accommodated in the recess. A latch device that is configured to be screwed through. In claim 1 or 2,
The latch is configured such that one side surface is a guide surface that is inclined downward toward the protruding direction, and the other side surface is a locking surface, and the guide surface side has a groove having the long hole at the bottom. Is a latch device that is formed along the protruding and retracting direction and is configured to conceal the screw head with the concave groove. In any one of Claims 1-3,
The latch is biased by a biasing means disposed between the rod and
A latch device in which the bottom of the concave groove is inclined downward toward the protruding direction.   A joinery comprising the latch device according to claim 1.

Images