JP3540203B2 - Latch receiving device - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a latch receiving device that is fitted and attached to a recess provided on a fixed portion side of a building, a fitting, or the like facing a door end.
[0002]
[Prior art]
Generally, a latch receiving device (metal fitting) is buried in a digging hole formed in a door frame or a pillar of an entrance in order to lock a latch of a latch lock provided on a door opening of a door.
Conventionally, as this kind of latch receiving device, there is one disclosed in Japanese Patent Application Laid-Open No. 9-72133. The latch receiving device includes a latch receiving case that is fitted and attached to a recess provided on a fixed portion side of a building or the like facing a door end, and a latch fitting recess that is movably fitted in the case in a lateral direction. And a latch receiving cover having a latch fitting window, a fixing plate fitted between the case and the bottom wall of the box, and a pinion for moving and adjusting the box in a lateral direction.
[0003]
The fixing plate is provided with an oblong hole extending obliquely with a rack formed on one inner edge, and the pinion that meshes with the rack is disposed in the oblong hole, and is protruded from the center of the pinion. The operation projection is slidably fitted in a vertically extending elongated hole formed in the bottom wall of the box. By rotating the operation projection, the pinion moves up and down along the elongated hole of the box. The box is moved in the lateral direction while the latching position of the latch is adjustable in the lateral direction.
[0004]
[Problems to be solved by the invention]
By the way, in the above-mentioned prior art, the fixing plate is indispensable between both the bottom walls of the latch receiving case and the adjustment box, the number of parts is large, the processing of the fixing plate is difficult, and the dust is formed in the long hole of the fixing plate. There is a problem that the rack is filled with dust and the pinion moves poorly or does not move.
SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and aims to reduce costs by reducing the number of parts and facilitating processing, and to facilitate discharge of dust entering the apparatus. It is to provide a latch receiving device which can be achieved.
[0005]
[Means for Solving the Problems]
In the present invention, the following technical measures are taken to achieve the above object. That is, the present invention provides a latch receiving case fitted and attached to a recess provided on a fixed portion side of a building or the like facing a door end, and a latch fitting recess fitted movably in the lateral direction in the case. A box having a latch receiving window, a latch receiving cover having a latch fitting window, and an adjusting means for adjusting the lateral movement of the box. Rack teeth protruding toward the inside of the case at a predetermined pitch, a pinion guide provided at a predetermined interval in parallel with the rack teeth, and a concave bottom wall of the adjustment box. A longitudinal hole extending in the longitudinal direction, and is fitted in the longitudinal hole so as to be movable and rotatable in the longitudinal direction, and is interposed between the case and the box, meshes with the rack teeth row, and has a tooth tip. Is characterized in that it is constituted by a box driven pinion arranged was to contact the serial pinion guide.
[0006]
In this case, one of the rack tooth row and the long hole is inclined with respect to the side wall of the case. Therefore, by turning the box drive pinion in any direction to the left and right, since this pinion is engaged with the rack teeth of the case, it moves vertically along the guide, and the pinion moves the adjustment box in the horizontal direction. To adjust the latching position of the latch.
According to the present invention, since the device components include the latch receiving case, the adjustment box, the box drive pinion and the latch receiving cover, the number of components is small, and the rack teeth and the guide are formed by press molding. Since it is possible, the processing is simple, the production cost can be reduced, and the refuse between the case and the box can be easily discharged.
[0007]
In the latch receiving device according to the present invention, the rack tooth row is provided obliquely to a box side wall surface, and a long hole of the box is parallel to the box side wall surface, or The rack tooth row may be parallel to the box side wall surface, and the long hole of the box may be inclined with respect to the box side wall surface.
The latch receiving device according to the present invention may further include a tooth portion that meshes with a rack tooth row on the pinion, a guide portion that is slidably fitted in a long hole of the box, and a pinion rotation operation tool. The fitting hole may be configured to be integrally formed by press working. In this case, the structure of the box drive pinion is very simple, and the processing is easy, so that the cost can be significantly reduced.
[0008]
The latch receiving case and the adjusting box can be integrated by a fixing means such as caulking or spot welding after the apparatus is assembled.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 6 show a first embodiment of a latch receiving device 1 according to the present invention. As shown in FIG. 1, the latch receiving device 1 includes a latch receiving case 2, an adjustment box 3, a latch receiving cover 4, and a box driving pinion 5. As shown in FIG. 3, the latch receiving case 2 is fitted into a recess 8 (also referred to as a dug hole) provided on a fixed portion side 7 of a building or the like facing the end 6A of the door 6 and is screwed by a screw 9. A rectangular box 10 fitted into the recess 8 and mounting lugs 11 formed symmetrically on the opening side edge of the box 10 are provided, and the inside of the rectangular box 10 is a box. The receiving recess 12 is formed by pressing a metal plate.
[0010]
On the inner surface of the rectangular box bottom wall, that is, the concave bottom wall 10A of the case 2, the pitch of the pinion 5 is the same as the pitch of the pinion 5 on a line inclined (about 15 degrees) with respect to the case side wall 10B and extending in the vertical direction. A rack tooth row 13 made of pin-like teeth meshing with the pinion 5 at a pitch, that is, a pin rack is projected, and a pinion slidably comes into contact with the tooth tip of the pinion 5 while meshing with the rack tooth row 13. The guide 14 is integrally formed in parallel with and protruding from the rack tooth row 13. Further, the mounting lugs 11 are each provided with an insertion hole 15 for the screw 9.
[0011]
The adjustment box 3 is a rectangular box shape which is horizontally movably fitted in the rectangular box portion 10 of the case 2 and has a latch fitting recess 3A formed therein. Are provided, and are formed by pressing a metal plate. The ear pieces 16 and 17 cover the opening on the front side of the case box portion 10. One ear piece 16 is made wider in the lateral direction than the other ear piece 17, and the front side ( On the case receiving cover side), a box-positioning guide protrusion 18 is formed in a bulging shape at a central portion in the vertical direction.
[0012]
A long hole 21 for pinion fitting is provided in the bottom wall 19 of the adjustment box 3 at the center in the left-right direction and extends in the vertical direction in parallel with the box side wall 20.
The latch receiving cover 4 is formed by pressing a rectangular metal plate. The latch receiving cover 4 is provided with a latch fitting window 23 through which the latch 22 corresponding to the front opening of the latch receiving case 2 is inserted. Screw insertion holes 24 are provided at both ends of the case 2 at positions corresponding to the screw insertion holes 15 of the case 2. The latch fitting window 23 has a notched guide recess 25 into which a positioning guide projection 18 protruding from one side edge of the adjustment box 3 is slidably fitted in the left-right direction. I have.
[0013]
The pinion 5 is formed by pressing a metal plate by pressing, and includes a tooth portion 26 that meshes with the rack teeth 13 and a cap-shaped guide portion that is slidably fitted in the long hole 21 of the box 3. 27, a cross-shaped pinion turning operation tool fitting hole 28 penetrating through the center of the guide portion 27 is integrally formed.
In the above embodiment, after the box drive pinion 5 is inserted into the rectangular box 10 of the case 2 so as to mesh with the rack teeth 13, the latch adjustment box 3 is fitted into the box 10, and The slot 21 provided on the drive pinion 5 is fitted with the guide portion 27 of the drive pinion 5, the latch receiving cover 4 is overlapped with the mounting lug 11 of the case 2, and the guide recess 25 is formed on the guide projection 18 of the box 3. The latch receiving device 1 is integrated as shown in FIGS. 2 and 3 by fitting and positioning, and by caulking and fixing the two screw insertion holes 15 and 24 of the case 2 and the cover 4.
[0014]
Therefore, when the latch receiving device 1 is mounted on the fixed side 7 such as a vertical frame of an entrance frame, the rectangular box portion 10 of the case 2 is fitted into a dug hole or the recess 8 provided on the fixed side 7, and the latch The screw 9 may be inserted and screwed through the screw insertion hole 24 of the receiving cover 4, and both the case 2 and the box 3 may be tightened and fixed to the fixed side 7.
When adjusting the backlash between the latch 22 of the lock attached to the door 6 and the side wall 20 of the latch adjusting box 3, the tip of a turning operation tool, for example, a screwdriver, is inserted into the tool fitting hole 28 of the pinion 5. And the pinion 5 meshed with the rack tooth row 13 is guided by the pinion guide 14 of the case 2 by rotating the driver to rotate along the long hole 21 of the box 3. Since the adjusting box 3 is slid in the oblique vertical (up and down) direction, the adjusting box 3 can be moved in the horizontal (left and right) direction, and the locking position with the latch 22 can be adjusted arbitrarily (FIG. FIG. 6 shows the position of the box 3 to the right.)
[0015]
According to the above embodiment of the present invention, not only the number of parts can be reduced, but also each part can be formed by press working, so that processing can be facilitated and cost reduction can be achieved. It is easy to discharge dust that has entered between the bottom walls of the case 2 and the box 3. That is, in the conventional device described in Japanese Patent Application Laid-Open No. 9-72133, it is difficult to discharge dust entering the long hole formed with the rack, the pinion movement becomes poor, and the box 3 cannot be adjusted. However, the present invention eliminates such a risk.
[0016]
In particular, since the rack teeth 13, the pinion guide 14, and the pinion 5 can be formed by breath processing, the cost can be reduced.
FIGS. 7 and 8 show a main part of a second embodiment of the present invention. The difference from the first embodiment is that the rack teeth 13 and the pinion guide 14 provided in the case 2 are formed by the case side wall 10B. And the oblong hole 21 provided in the bottom wall 19 of the box 3 is inclined (about 15 degrees) with respect to the box side wall 20 and is equivalent to the first embodiment. It has the function and effect of. Therefore, the same reference numerals as those in FIG. 1 to FIG. Also in the second embodiment, all parts such as the case 2 and the box 3 can be formed by press working.
[0017]
The present invention is not limited to the above-described embodiment. For example, the pinion 5 can be integrally formed by machining, die forging, or the like, or can be a combination structure of a gear and a screw, and the case 2 and the latch receiving cover 4 do not have to be integrated by caulking or the like, and the design can be changed as appropriate.
[0018]
【The invention's effect】
As described above, the latch receiving device according to the present invention is characterized in that the movement adjusting means of the adjusting box is formed by pressing the latch receiving case concave bottom integrally with the rack tooth row projecting at a predetermined pitch toward the inside of the case. A guide provided at a predetermined interval in parallel with the rack tooth row, a vertically extending elongated hole formed at the bottom of the recess of the adjustment box, and fitted in the elongated hole so as to be vertically movable and rotatable. And a box drive pinion which is disposed between the case and the box, meshes with the rack teeth and is arranged so that the tooth tip contacts the guide, so that the structure is simple and processing is easy. Therefore, the number of parts can be reduced, and the cost can be reduced. Further, it is easy to discharge dust that has entered between the bottom walls of the case and the adjustment box, and the rotation and vertical movement of the pinion can be smoothly performed, so that the latching position can be easily adjusted.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing a first embodiment of the present invention.
FIG. 2 is a partially cutaway front view of the embodiment.
FIG. 3 is a sectional view taken along line AA of FIG. 2;
FIG. 4 is a front view of the latch receiving case in the embodiment.
FIG. 5 is a sectional view taken along line BB of FIG. 4;
FIG. 6 is a sectional view taken along line AA of FIG. 2 showing a position on the right side of the box in the embodiment.
FIG. 7 is a front view showing a main part (latch receiving case) of a second embodiment of the present invention.
FIG. 8 is a front view showing a main part (adjustment box) of the second embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Latch receiving device 2 Latch receiving case 3 Adjustment box 3A Latch fitting recess 4 Latch receiving cover 5 Box drive pinion 6 Door 7 Fixed side 8 Recess 10A Bottom wall (recess bottom wall)
10B Side wall 12 Box receiving recess 13 Rack tooth row 14 Pinion guide 19 Box bottom wall 20 Box side wall 21 Long hole 22 Latch 23 Latch fitting window 26 Tooth part 27 Guide part 28 Tool fitting hole for pinion rotation operation

Claims (4)

A latch receiving case fitted and attached to a recess provided on a fixed portion side of a building or the like opposed to a door end, and an adjustment box having a latch fitting recess fitted movably in the lateral direction in the case. A latch receiving cover having a latch insertion window, and a latch receiving device comprising an adjusting means for adjusting the lateral movement of the box;
The box movement adjusting means is formed integrally with the bottom wall of the concave portion of the latch receiving case by press working, and has a rack tooth row protruding toward the inside of the case at a predetermined pitch, and a predetermined distance and parallel to the rack tooth row. A pinion guide, a vertically extending elongated hole formed in the bottom wall of the recess of the adjustment box, a vertically movable and rotatably fitted in the elongated hole, and the pinion guide is provided between the case and the box. A latch receiving device comprising a box drive pinion that meshes with a rack tooth row and has a tooth tip contacting the pinion guide. 2. The latch receiving device according to claim 1, wherein the rack teeth are provided obliquely with respect to the box side wall surface, and the elongated holes of the box are parallel to the box side wall surface. 3. The latch receiving device according to claim 1, wherein the rack teeth are parallel to the box side wall surface, and the long hole of the box is inclined with respect to the box side wall surface. In the pinion, a tooth portion that meshes with a rack tooth row, a guide portion that is slidably fitted in the elongated hole of the box, and a pinion rotation operation tool fitting hole are integrally formed by press working. The latch receiving device according to claim 1, wherein the latch receiving device is provided.

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