JPH07158325A - Receiving tool for door latch - Google Patents

Abstract

PURPOSE:To prevent a closed door from opening, by holding the fitting face in the latch of a door by a receiving piece. CONSTITUTION:When a door 5 is closed gradually to A6 direction, the slant face 6b for guide in 8 latch 6 gets into contact with the front end of the guide 13 in a base board 11 and the latch 6 is pushed into the door 5 while resisting against the acting force and the front end of latch is forced to slide the guide 13. When the latch 6 reaches to the opposite position of the recess 22 of a slide box 21, it protrudes toward the recess 22 by the acting force. In this state, the fitting face 6a at the opening door side A7 of the latch 6 is held by a receiving piece 23. Since the movement of the receiving piece 23 to the receiving face 19 is restricted by a connection piece 24 and an adjustment plate 30, the door 5 is prevented from opening. When a clearance exsists between the door 5 and the door stop in the state that the latch 6 is inserted in the recess 22, the adjustment prate 30 is rotated to adjust the position of the receiving piece 23 to the right or left hand.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door latch holder which is attached to a door frame and is used to engage a latch provided at a free end of the door when the door is closed.

[0002]

2. Description of the Related Art As a latch of this type, for example, one shown in FIG. 8 is known. In the figure, 11j is a substrate on which a through hole 12j for receiving a latch is formed.
A case 15j is attached to the back side of the base plate 11j so as to surround the through hole 12j, and a receiving surface 19j for receiving the peripheral edge of the adjusting plate 30j on the inner surface of the wall of the case 15j on the door opening direction side. It is equipped with. In the case 15j, the receiving piece 23j is provided so as to be movable back and forth toward the receiving surface 19j, and the connecting piece 24j extending from the receiving piece 23j in the direction opposite to the door opening direction is In a disk-shaped adjusting plate 30j arranged between the back wall of the case 15j and the connecting piece 24j, a shaft portion 32j located at a position deviated from the center thereof is pivotally attached (for example, Japanese Utility Model Publication No. 4-10674). See the bulletin).

In such a structure, the door 5
When the door is closed, the engaging surface 6a of the latch 6 of the door 5 can be received by the receiving piece 23j to prevent the door 5 from opening. Further, by operating the operating portion 33j and turning the adjusting plate 30j, the receiving piece 23
Since it is possible to displace j to the left or right, by performing such adjustment, when the door 5 is closed and the opening thereof is blocked as described above, the door stop 2 and the door 5 There is a feature that it is possible to prevent a gap between the doors and eliminate rattling of the door 5 when the door is closed.

[0004]

However, in the above conventional receiver, as shown in FIG. 9, the center 30aj of the adjusting plate 30j and the shaft portion 32 are arranged.
When a virtual straight line L1j connecting the center 32aj of j is parallel to the receiving surface 19j, the door 5 is tried to be opened by strong wind in the state where the door 5 is closed or without rotating the door knob securely. Therefore, when a large force in the opening direction shown by the arrow A1 in FIG. 8 is applied to the door 5, the following problems occur. The force applied to the door 5 in the direction of arrow A1 is applied to the center 32aj of the shaft portion 32j as shown by arrow A2 in FIG. In this case, since the adjusting plate 30j is only in contact with the receiving surface 19j at the point indicated by the symbol P1 on the peripheral edge thereof,
The force in the arrow A2 direction is applied to the adjusting plate 30j as a rotational driving force in the arrow A3 direction. The rotation driving force in the arrow A3 direction causes the adjusting plate 30j to rotate in the same direction, and the receiving piece 23j is laterally displaced in the arrow A4 direction in FIG. as a result,
There is a gap between the door stop 2 and the door 5, and the door 5 becomes rattling. Such a problem has occurred.

The present invention has been made to solve the above-mentioned problems (technical problems) of the prior art.
It is an object of the present invention to provide a receiver for a door latch in which the engagement surface of the latch is locked by the receiving piece when the door is closed so that the opening of the door can be prevented. The second purpose is to rotate the adjustment plate to displace the receiving piece to the left or right, and when the door is closed and the opening is blocked as described above, the door stop and It is an object of the present invention to provide a receiver for a door latch that can prevent a gap from being formed between the door and the door and can eliminate rattling of the door when the door is closed. A third object is to allow the receiving piece to be adjusted in the left-right direction, but after the adjustment is completed, the door is closed by the strong wind or the door knob is not rotated without fail when the door is closed. Even if a large force in the opening direction is applied to the door due to the attempt to open it, the force to rotate it is not applied to the adjustment plate and the receiving piece is kept immobile, and as a result, the door is It is an object of the present invention to provide a door latch receiver capable of preventing the occurrence of rattling.

[0006]

In order to achieve the above object, the door latch receiving member according to the present invention is provided so as to be retractable at an attachment portion to a vertical frame of a door frame and an end surface of a free end of the door. A substrate having a through hole for receiving the latch, and on the back side of the substrate, the latch,
A case having a receiving piece for receiving the engaging surface of the latch and a space for accommodating an adjusting plate for adjusting the position of the receiving piece is attached to the state surrounding the through hole, and a door opening direction in the case. The inner surface of the side wall is provided with a receiving surface for receiving the current surface of the adjusting plate, and the receiving piece is provided in the case so as to be movable back and forth toward the receiving surface. Is a connecting piece provided with a fitting hole for fitting the shaft portion of the adjusting plate in a state where the fitting hole is overlapped with the through hole, and extends toward the side opposite to the door opening direction to form a back wall of the case. An adjusting plate having an abutting surface for contacting the receiving surface is disposed between the connecting piece and the shaft portion provided at an eccentric position in the adjusting plate and rotated to the fitting hole. It is fitted so as to be movable, and its shaft portion is provided with an operating portion for rotating operation exposed in the through hole. In bracket as are the door latch,
The adjusting plate has a polygonal outer shape and is provided with a plurality of abutting surfaces on its periphery, and a vertical line that virtually lowers the length of the abutting surface that abuts the receiving surface from the center of the shaft portion to the receiving surface. The length of the arrival point of is located within the corresponding surface.

[0007]

When the engaging surface of the door latch is received by the receiving piece, the door is prevented from opening. By turning the adjusting plate, the receiving piece can be moved in the door opening direction or the anti-door opening direction. The movement can adjust the positional relationship between the door and the door stop. Even if a large force in the door opening direction is applied from the latch to the receiving piece in the state where the engaging surface of the latch is received by the receiving piece, and that force is further applied to the adjusting plate, the force is not Since it works only to press it against the receiving surface of the case, the adjustment plate is kept immovable without the force to rotate it. Therefore, the receiving piece also remains stationary.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 showing the use state of the door latch receiver
, 1 is a vertical frame in the door frame, 2 is a door stop, 3,
Denoted at 4 are concave portions formed in the vertical frame for mounting the receiving device.
Reference numeral 5 indicates a free end portion of the door, and reference numeral 6 indicates a well-known door latch provided on the end surface of the free end so as to be retractable. Reference numeral 7 denotes a receiver of the door latch 6. The receiver 7 is shown in FIG.
It will be described with reference to FIG. Reference numeral 11 denotes a substrate for holding various members of the receiving tool 7, which is made of a material having sufficient strength, for example, a metal plate material. Reference numeral 12 is a through hole for receiving the latch 6, 13 is a guide surface for guiding the latch toward the through hole 12, and 14 is a mounting portion for mounting the substrate 11 on a vertical frame. A mounting member such as a wood screw is inserted through the mounting portion. Possible countersinks are formed. Next, 15 is a case provided on the back side of the substrate 11,
The latch 6, the slide box 21, which will be described later, the space 20 for accommodating the adjusting plate 30 and the spring 35 are provided, and the receiving piece is provided as described later.
When the latch 23 receives the latch 6, it is formed by press-molding a steel plate, for example, so as to exert sufficient strength against the force applied from the receiving piece 23 via the adjusting plate 30. 16 is the case
In the accommodating portion at 15, the back wall 16a, the left and right side walls 16b, 16c,
It has an upper wall 16d and a lower wall 16e, and is provided so as to surround the through hole 12. Reference numerals 17 and 17 denote attachment pieces for integrally connecting the case 15 to the substrate 11, which are integrally formed with the walls 16d and 16e and have through holes 18 which overlap the countersunk holes of the attachment portion 14. It is integrated with the substrate 11 by caulking the hole edge of the countersink to the hole edge of the through hole 18, for example. Reference numeral 19 is a receiving surface for receiving the current surface of the adjusting plate 30 which will be described later, and is provided on the inner surface of the side wall 16c on the door opening direction A7 side.

Next, the slide box 21 is made of, for example, a steel plate as a material having sufficient strength against the force applied from the latch 6, and the shape of the slide box 21 is formed in a box shape as shown in the drawing so that the respective parts reinforce each other. I am doing it. As the forming means, for example, a pressing means is used. However, it may be formed by molding. The inside of the slide box 21 is a recess 22 for receiving the latch 6. The reference numeral 23 designates a receiving piece for receiving the engaging surface 6a of the latch 6, and is constituted by the side wall 21c on the side of the receiving surface 19 of the box 21. Reference numeral 24 is a connecting piece for connecting with the adjusting plate 30, and is extended from the receiving piece 23 toward the side opposite to the door opening direction. The connecting piece 24 is constituted by a back wall 21a of the box 21, for example. Reference numeral 25 is a fitting hole for fitting the shaft portion of the adjusting plate 30, which is formed in the back wall 21a so as to overlap with the through hole 12 of the substrate 11. Numerals 26 and 27 are covering pieces for closing the gap between the through hole 12 and the concave portion 22, and are formed integrally with the side walls 21b and 21c of the box 21. In order to allow the receiving piece 23 to move back and forth toward the receiving surface 19, the slide box 21 is accommodated in the case 15 so as to be able to move laterally. For example, the upper and lower walls 21d and 21e are guided by the upper and lower walls 16d and 16e of the case 15 in the lateral direction, and the covering pieces 26 and 27 are the edges 16b 'and 16c' of the side walls 16b and 16c and the rear surface of the substrate 11. The horizontal movement is guided by and.

Next, 30 is an adjusting plate for adjusting the position of the receiving piece 23, which is arranged between the back wall 16a and the connecting piece 24.
The outer shape is formed into a polygon, for example, an octagon, and a plurality of contact surfaces 31a to 31h are provided around the periphery. Reference numeral 32 denotes a shaft portion for pivotally attaching the adjusting plate 30 to the connecting piece 24, and a center 32 of the shaft portion 32.
In order to make the distance from a to each of the abutments 31a to 31h different, it is provided at a position eccentric from the center 30a of the adjusting plate 30 (see FIG. 5; the center is, for example, the center of the circumscribed circle of the adjusting plate). For example, in the present example, each of the above-mentioned immediate faces 31a-
It is provided in an eccentric position where the distances up to 31h are all different. Further, the shaft portion 32 is formed by pressing means so as to have a bulge shape, and is rotatably fitted in the fitting hole 25. In the adjusting plate 30, as shown in FIG. 5, the length L of the abutting surface (for example, the abutting surface 31a) that abuts the receiving surface 19 is set.
2 has a length such that a reaching point 32c of a perpendicular line 32b that is virtually lowered from the center 32a of the shaft portion 32 to the receiving surface 19 is located inside the corresponding surface 31a, and both ends of the center 32a and the present surface 31a.
The triangle formed by connecting 31a 'and 31a "is an acute-angled triangle. In the above relationship, the virtual straight line L1 connecting the center 30a and the center 32a of the shaft portion 32 is the receiving line as shown in the figure. All the conditions are satisfied even for the present surface which is parallel to the surface 19 and for the present surface where the straight line L1 is not parallel to the receiving surface 19. 33 is an operation for rotating the adjusting plate 30. The shaft portion 32 is formed so as to be exposed in the through hole 12, and is formed in a plus-shaped hole so that an operating member such as a plus driver can be fitted therein. A member for holding the plate 30 in a state in which any of its surrounding surfaces are in contact with the receiving surface 19, and it is intended to prevent rattling of the adjusting plate 30 by holding it in such a manner. A spring having a shape as shown is used as 36. In the main body, adjusting plate 30
Is urged in the direction of arrow A5 in FIG. 37 is a positioning piece for positioning the main body portion 36 at a position facing the adjusting plate 30, and is brought into contact with the upper and lower walls 16d, 16e to fulfill the purpose.

As shown in FIG. 1, the receiving member 7 having the above-described structure is used by attaching it to the vertical frame 1 with the attaching screw 40. Door 5
2 is closed in the direction of arrow A6 in FIG. 2, the guiding slope 6b of the latch 6 contacts the tip of the guide portion 13 of the base plate 11, and the latch 6 resists the biasing force applied in advance to the door. The tip of the latch 6 slides on the guide portion 13 by being pushed into the inside of the guide portion 13. When the latch 6 reaches the concave portion 22 of the slide box 21, the latch 6 projects toward the concave portion 22 by the biasing force, and the state shown in FIG. 2 is obtained. In this state, the engaging surface 6a of the latch 6 on the door opening direction A7 side is received by the receiving piece 23, and the receiving piece 23 is connected to the connecting piece 24.
Since the adjustment plate 30 blocks the movement toward the receiving surface 19, the opening of the door 5 is blocked.

When the door 5 contacts the door stop 2 when the door 5 is closed as described above, the latch 6 does not reach the position facing the recess 22 and contacts the cover piece 27, or If there is a gap between the door stop 2 and the door 5 when the latch 6 enters the recess 22, the adjustment plate
Rotate 30 to adjust the position of the receiving piece 23 to the right or left in FIGS. That is, with the door 5 opened, the tip of the driver is fitted into the operation portion 33, and the driver adjusts the adjustment plate 30.
Turning the. Since the shaft portion 32 of the adjusting plate 30 is eccentric as described above, the distance from the receiving surface 19 to the shaft portion 32 can be changed depending on which of the surrounding contact surfaces 31a to 31h are brought into contact with the receiving surface 19. I can. Therefore, the lateral position of the receiving piece 23 with respect to the substrate 11 can be changed. In this adjustment, since the adjusting plate 30 is pushed in the direction of the arrow A5 by the spring 35, whichever surface of the adjusting plate 30 faces the receiving surface 19, that surface is surely in contact with the receiving surface 19. Becomes In addition, the user who operates the driver feels a click every time the contact surface with the receiving surface 19 changes, and the relationship between the immediate surface and the receiving surface 19 is a slide box.
Even if it is hidden behind 21 and not visible to the eye, the receiving surface will be the receiving surface for the time being 19
Can be brought into contact with.

When a force in the direction of arrow A7 is applied to the door 5 (for example, by wind or manpower) without the latch 6 being retracted into the door 5 in the state where the door 5 is closed,
The force is applied from the engaging surface 6a of the latch 6 to the receiving piece 23 in the direction of arrow A8 in FIG.
32a is added in the direction of arrow A9 in FIG. 5, that is, in the direction of the perpendicular line 32b. However, since the reaching point 32c of the perpendicular line 32b is within the present surface (for example, the present surface 31a) which is in contact with the receiving surface 19, the arrow A is used.
The force in the nine directions does not act on the adjusting plate 30 as a force for rotating the adjusting plate 30, and the adjusting plate 30 is kept stationary. Therefore, the receiving piece 23 is also held immovably without displacement in the direction of arrow A8. As a result, the regulatory state is preserved.

Next, FIGS. 6 (A), (B), and (C) show different embodiments of the present invention, in which the adjusting plate is formed as a triangle, a hexagon, and a dodecagon, respectively, as another example of the polygon. The following shows an example. In addition, the parts which are considered to have the same or equivalent configurations as those in the previous figure in terms of function are denoted by the same reference numerals as those in the previous figure, and redundant description is omitted. (Also, in the following drawings, the same symbols are used for the same reason, and the duplicated description will be omitted.)

Next, in FIG. 7, the adjusting plate 30 is provided with a case 15 for the time being.
4 shows another example of a member for holding the member in a state of abutting against the receiving surface 19 of the case. Reference numeral 42 denotes a holding member, and as shown in FIG.
The adjustment plate 30 is formed by forming 43 and 44 with a portion between the cuts and forming them thin as shown in (B).
It is configured so that it can be elastically deformed in the direction of the arrow as the.

[0016]

As described above, the present invention has the effect of solving the problems of the prior art and achieving the first to third objects.

[Brief description of drawings]

FIG. 1 is a front view of a usage state.

FIG. 2 is a sectional view taken along line II-II in FIG. 1 with the door closed.

FIG. 3 is an exploded perspective view.

FIG. 4 is a sectional view taken along line IV-IV in FIG. 2 showing the relationship between the case and the adjusting plate (the slide box is not shown).

FIG. 5 is a diagram showing the relationship between the immediate surface of the adjustment plate and the center of the shaft portion.

6 (A), (B), and (C) are views showing an embodiment in which the shape of the adjusting plate is different, respectively, in cross section at the same position as in FIG.

7A and 7B show another embodiment of the holding member of the adjusting plate, FIG. 7A is a perspective view, and FIG. 7B is a cross-sectional view at the same position as in FIG.

FIG. 8 is a sectional view similar to FIG. 2 showing a conventional technique.

FIG. 9 is a diagram showing a relationship between an adjusting plate and a receiving surface in the conventional technique.

[Explanation of symbols]

 11 Board 12 Through hole 15 Case 19 Receiving surface 23 Receiving piece 24 Connecting piece 30 Adjusting plate 31a to 31h For the time being 32 Shaft part

Claims (1)

[Claims] 1. A substrate having a mounting portion for a vertical frame of a door frame and a through hole for receiving a latch provided on an end surface of a free end of the door so as to be retractable and retractable, and a back of the substrate. A case having a space for accommodating the latch, a receiving piece for receiving the engaging surface of the latch, and an adjusting plate for adjusting the position of the receiving piece is attached to the side so as to surround the through hole. At the same time, the inner surface of the wall of the case on the door opening direction side is provided with a receiving surface for receiving the current surface of the adjusting plate, and the receiving piece is movable back and forth in the case toward the receiving surface. From the receiving piece, a connecting piece having a fitting hole for fitting the shaft portion of the adjusting plate in a state of overlapping with the through hole is extended toward the side opposite to the door opening direction. Between the back wall of the case and the connecting piece, a contact surface for contacting the receiving surface with the periphery is provided. While arranging the adjusting plate with
A shaft portion provided at an eccentric position in the adjusting plate is rotatably fitted in the fitting hole, and the shaft portion is provided with a rotating operation portion exposed in the through hole. In the receiver of the door latch, the adjusting plate is formed into a polygonal outer shape so as to have a plurality of abutting surfaces on its periphery, and the length of the abutting surface that abuts on the abutting surface is determined from the center of the shaft portion. A door latch receiver characterized in that the arrival point of a vertical line that is virtually lowered on a surface is located within the corresponding surface.