JP4159440B2 - Reversing latch lock - Google Patents

Description

The present invention relates to a reversible latch lock that is used for a rotary door, and is particularly suitable for a door such as a gate.

   For example, in the case of a double door of a gate door, a latch lock having a latch bolt is provided on one movable door, and a French drop is applied to the lower part of the other fixed door to temporarily fix the position of the door.

However, because the French drop is only at the bottom of the fixed door, the door moves greatly when the door is locked due to the latch lock mounting position, the door itself bending or strong wind, etc. The distance between the end faces of the fixed door (chile) is larger than the latch bolt dimension for the receiving hole provided in the other door. At this time, the latch bolt of the latch lock is simply inserted into the receiving hole of the other party. Therefore, if the distance (chile) between the movable door and the other party's fixed door is larger than the latch bolt's hanging dimension, of course, the latch There is a problem that the latch bolt of the lock comes off from the receiving hole.
Conventionally, there exists a thing of patent document 1 as an inversion type latch lock. However, this conventionally known reversible latch lock has the above-mentioned problems.
Japanese Utility Model Publication No. 60-68164

  The problem to be solved is that the latch bolt of the latch lock comes off the receiving hole when the distance (tilt) between the movable door and the other fixed door is larger than the latch bolt hanging dimension in the closed door lock state. It is.

In order to solve the above-mentioned problems, the reversible latch lock of the present invention is provided with a latch lock having a latch bolt on the open end side of the door, and the other door or frame facing the door is closed when the door is locked. only set a receiving member having a receiving hole to engage the latch bolt; planar shape substantially rhombic, at least the tip portion having an engagement surface for engaging a receiving hole of the receiving member and an inclined surface, A latch bolt that normally protrudes from the front surface of the latch case by the urging force of the latch spring; a lock piece that engages with an engaging portion of the latch bolt and prevents the latch bolt from reversing; And an actuating member that disengages the latch bolt and allows the latch bolt to be reversed and a hub; when the door is closed, the inclined surface of the latch bolt comes into contact with a receiving seat attached to the other receiving member Slope Therefore, when the door is opened, the lock piece is disengaged from the latch bolt by the operation of the operating member and the hub, and the engaging surface of the latch bolt is received by the opening force. It is pushed by the engaging portion of the seat and reversed, the engaging surface is inclined, and the latch bolt compresses the latch spring by the action of the inclined engaging surface so as to be retracted into the latch case and opened. In reversible latch lock,
To together to form a recess in a portion of the engagement surface of the inverted latch lock latch bolt in the closed door locked state, the distance between the end faces of the end face of the door and the mating of the door or frame (Chile) is received In order to prevent the latch bolt from extending beyond the dimension of the latch bolt with respect to the hole, a locking mechanism having a locking portion locked to the recess of the latch bolt is provided on the receiving member side. (See claim 1).

  In this case, the receiving member includes a box receiver having a receiving hole and a receiving seat which is attached to the front surface of the opening of the box receiver and has a communication hole communicating with the receiving hole. As a mechanism, a protrusion-shaped locking part protruding from the edge of the communication hole of the receiving seat facing the concave part of the latch bolt, and an outer side of the box support in the vicinity of the locking part, the horizontal movement of the box support is provided. Springs can be provided (see claim 2).

  In addition, the receiving member includes a box receiver having a receiving hole and a receiving seat that is attached to the front surface of the opening of the box receiver and has a communication hole that communicates with the receiving hole. Has a substantially hook-shaped locking member pivotally supported on the outside of the box holder, and has a locking portion projecting from one end of the locking member so as to face the concave portion of the latch bolt. In addition, the other end portion can be provided with a spring that urges the locking portion to be always engaged with the concave portion of the latch bolt (see claim 3).

According to the inversion type latch lock of the first aspect of the present invention, a recess is formed in a part of the engagement surface of the latch bolt of the latch lock provided on the open end side of the door, and the door is closed when the door is locked. When the distance (chile) between the end face of the door and the other door or the frame is about to be larger than the latch bolt hanging dimension with respect to the receiving hole, the receiving member side is engaged with the recess of the latch bolt. Since there is a locking mechanism with a locking part, even if the distance between the door and the other door or the frame (chile) increases due to strong winds etc. beyond the latch bolt's hanging dimension with respect to the receiving hole, the locking Since the locking portion of the mechanism is locked in the concave portion of the latch bolt, the latch bolt of the latch lock does not come off from the receiving hole.

According to the reversible latch lock of claim 2, the receiving member is constituted by a box receiver and a receiving seat, and as the locking mechanism, the communication hole edge of the receiving seat facing the concave portion of the latch bolt In addition to the effect of claim 1, there is provided a projection-like locking portion projecting on the box and a spring provided on the outside of the box support near the locking portion to move the box support horizontally. There is an advantage that the ratchet of the head of the latch bolt can be prevented by the receiving, and the box receiving can be returned to the normal posture by the spring.

According to the inversion type latch lock of the third aspect, the receiving member is composed of a box receiver and a receiving seat, and the locking mechanism is configured such that a substantially hook-shaped locking member is rotated outside the box receiver. The latch member is pivotally supported, and has a latching portion projecting on one end side of the latching member so as to face the concave portion of the latch bolt, and the latching portion is always provided on the other end portion of the latch bolt. In addition to the effect of claim 1, the box holder can prevent rattling of the head portion of the latch bolt, and the locking member is provided in the box holder. Since it can be provided at an appropriate position on the outside, there is an advantage that the corresponding position between the locking portion of the locking member and the concave portion of the latch bolt can be adjusted to an appropriate position.

The best mode of the inversion latch lock according to the present invention will be described below with reference to FIGS.
In FIGS. 1 and 8 to 11, reference numerals 1 and 2 denote double-open doors. An inner side 3 and an outer side seat 4 are provided on the indoor side and the outdoor side on the open end side of one door 1. An inner handle 5 and an outer handle 6 are fixed by a mounting column 7 to constitute a latch lock 60. As shown in FIGS. 5 and 6, the inner seat 3 is fitted with a latch case 8 in an empty space 3 a, and a latch bolt 10 is provided in the latch case 8 so as to be able to appear and retract.

  That is, in this embodiment, the latch bolt 10 uses a so-called known reversible latch head, and as shown in FIGS. In addition, a receiving frame a is provided on the indoor side of the other door 2 facing the door 1, and a carved portion a1 is formed on the receiving frame a opposite to the latch bolt 10, and a receiving hole 42 is provided in the engraved portion a1. The box receiver 41 is fitted, and the latch bolt 10 has a substantially rhombus planar shape with the engaging surface 10b as a surface engaged with the receiving hole 42, and a bulging portion formed symmetrically and integrally on the upper and lower sides of the rear portion. 10c and 10c are formed with engaging portions 10d and 10d in the front-rear direction, and an inclined fitting recess 10e for fitting one end of the latch spring 11 is formed at the rear end portion. The latch bolt 10 is fitted in and out of the opening 8a of the latch case 8, and is normally protruded by the urging force of the latch spring 11 as shown in FIG. 1, FIG. 5, FIG. 6, FIG. Holding.

As shown in FIGS. 7 to 11, a recess 10 f is formed on the engagement surface 10 b of the latch bolt 10, and the outer peripheral surface of the recess 10 f is a bulging portion 12.
In FIG. 6, reference numeral 13 denotes a lock piece for preventing the latch bolt 10 from reversing. Normally, the tip of the lock piece is engaged with the engaging portion 10d of the latch bolt 10 by the urging force of the spring 14 to Prevents reversal. Reference numeral 15 denotes an actuating member that swings horizontally by operating the inner and outer handles 5 and 6. By horizontally swinging the actuating member 15, the hub 16 is pushed forward or backward to rotate counterclockwise in FIG. the lock piece 13 to release the engagement between the engaging portion 10d of the latch bolt is rotated in the clockwise direction in FIG. 6 allows the inversion of the latch bolt 10. Reference numeral 18 denotes a hub spring, and 19 denotes a lid of the inner seat 3.
The reversible latch bolt 10 and its reversal prevention mechanism are well-known structures. For details, refer to Japanese Utility Model Laid-Open No. 60-68164.

As shown in FIGS. 8 to 11, the box receiver 41 is formed with a U-shaped receiving hole 42 having an opening on the side where the latch bolt 10 is received. A receiving seat 43 having a U-shaped cross section is fixed to the front surface of the receiving frame a with a screw 45 on the front surface of the opening of the box receiving device 41 so as to cover the box receiving device 41. A communication hole 44 communicating with the receiving hole 42 of the box receiver 41 is formed in the vertical plate portion 43 a of the receiving seat 43, and the tip of the latch bolt 10 protrudes and fits into both holes 42 and 44.

On the side plate 41 a on the indoor side of the box receiver 41, a spring storage cylinder portion 41 b that houses a spring 46 that constantly urges the box receiver 41 toward the door 2 is provided so as to protrude by the urging force of the spring 46. The box receiver 41 can be moved horizontally in the door thickness direction. Incidentally, constituting the receiving member 40 between the box receiving 41 and seat 43.

  Further, according to the present invention, when the door is locked, the distance (tilt) L (see FIG. 8) between the end face of the door 1 and the end face of the counterpart door 2 is a hook dimension of the latch bolt 10 with respect to the receiving hole 42 due to strong wind or the like. A locking mechanism 50 having a locking portion 51 that locks into the recess 10f of the latch bolt 10 is provided on the receiving member 40 side in order to prevent it from spreading when it exceeds x.

More specifically, the locking mechanism 50 includes a protruding locking portion 51 that protrudes from the edge of the communication hole 44 of the receiving seat 43 that faces the recess 10f of the latch bolt 10. When a side pressure F (see FIG. 9) acts on the latch bolt 10, the dust L between the doors 1 and 2 widens, and the bulging portion 12 of the side wall 20 of the recess 10 f of the latch bolt 10 becomes the side plate 41 a of the box receiver 41. Is pressed against the urging force of the spring 46, the box receiver 41 moves to the right, and the locking portion 51 is inserted into the recess 10f from the state of FIG. 8 to the state of FIG. When the dust L is about to extend beyond the latching dimension x of the latch bolt 10, as shown in FIG. 10, the locking portion 51 is locked to the side wall 20 of the recess 10f of the latch bolt 10, and the dust L1 However, the latch bolt 10 is prevented from being detached from the receiving hole 42 without spreading beyond the latching dimension x of the latch bolt 10.

In the state of FIG. 10 in which the locking portion 51 and the recess 10f are locked, when the side pressure F no longer acts, the latch bolt 10 is moved through the side plate 41a of the box receiver 41 by the biasing force of the spring 46. After returning to the closed door locking state in the normal protruding state, the chilli dimension is reduced to the original dimension L and the normal locking state shown in FIG. 8 is obtained.

In the closed door lock state of FIG. 8, the latch bolt 10 is in the solid line state of FIG. 5, and the front end portions 13a and 13a of the lock piece 13 are engaged with the engaging portion 10d. (In this embodiment, the lock piece 13 is formed in a U shape, and the tip portions 13a and 13a are engaged with the engaging portions 10d and 10d).

Therefore, when the grips 5 and 6 are pushed or pulled to the open state, the handle actuating members 15 and 15 shown in FIG. 6 swing in the horizontal direction and push the hub 16 in the horizontal direction. as a fulcrum but the pivot 21, the distal end portion 13a, so 13a is rotated in the direction in which the engagement portion 10d of the latch bolt, the 10d engages is released, the latch bolt 10 is inverted as indicated by the two-dot chain line in FIG. 5 It can be unlocked and opened.
At this time, the latch bolt 10 is closed and locked in FIG. 8, the latching portion 51 of the seat is not inserted into the recess 10 f of the latch bolt, and the bulging portion 12 is located on the side plate 41 a of the box receiver 41. Since it slides, there is no problem in the protruding operation and the reverse unlocking operation of the latch bolt 10. That is, by pushing or pulling the handles 5 and 6 in FIG. 8, the latch bolt 10 can be reversed without trouble as shown in FIG. 11 and can be opened. When the door is opened and the latch bolt 10 is released from the receiving member, the latch bolt 10 protrudes again by the restoring force of the latch spring 11 and returns to the solid line state of FIGS.

  Protruding locking portion 51 protruding from the edge of the communication hole 44 of the receiving seat 43 described above, and provided outside the box receiving 41 in the vicinity of the locking portion 51, urges the box receiving 41 in the door thickness direction. In this embodiment, the spring 46 to be configured constitutes a locking mechanism 50.

  The first example of the embodiment of the present invention has already been described as [the best mode for carrying out the invention] based on FIGS. 1, 4, and 8 to 11, reference numeral 30 denotes an outer seat attached to the door 2, and an outer handle 31 is attached to the outside of the outer seat. Reference numeral 32 denotes a mounting column.

  FIG. 12 shows a second example of the embodiment of the present invention. The receiving member 40 and the locking mechanism 50 are different from those of the first embodiment, and other configurations are the same as those of the first embodiment. It is the same as that. Therefore, the drawings of the first embodiment may be referred to as necessary.

That is, in the second embodiment, as the receiving member 40, a box receiver 41 having a U-shaped cross section having a receiving hole 42, and attached to the front surface of the opening of the box receiver 41 to communicate with the receiving hole 42. It is comprised with the receiving seat 43 in which the communicating hole 44 was formed. Further, as the locking mechanism 50, a substantially hook-shaped locking member 55 is pivotally supported on the outside of the box receiver 41, and at one end of the locking member 55, a recess 10f of the latch bolt 10 is provided. A locking portion 51 is provided so as to protrude so as to face the spring, and a spring 56 is provided at the other end portion to urge the locking portion 51 in a direction in which the locking portion 51 is always engaged with the recess 10f of the latch bolt 10. Is.
The locking portion 51 in this case has a taper 52 on the front surface in contact with the latch bolt 10 as in the first embodiment.

  When the door 1 in the open state is closed, first, the inclined surface 10a of the latch bolt 10 comes into contact with the seat 43, and retracts into the latch case 8 against the urging force of the latch spring 11 by the action of the inclined surface. When the latch bolt 10 comes to a position corresponding to the receiving hole 42 of the receiving seat 43, the latch bolt 10 protrudes and fits into the receiving hole 42 by the latch spring 11. At this time, the leading end portion of the latch bolt 10 protrudes while pressing the taper 52 surface of the locking portion 51 of the locking member 55, so that the locking member 55 is rotated counterclockwise in FIG. The bolt 10 has no problem in protrusion. The latch bolt 10 is fitted into the receiving hole 42 of the receiving member 40. At the same time, since the locking portion 51 is pushed in the direction of the door (recess 10 f) by the spring 56, the locking portion 51 holds the normal closed door locked state fitted in the recess 10 f of the latch bolt 10. That is, the locking portion 51 of the locking member 55 shown in the second embodiment is always engaged with the recess 10f of the latch bolt 10.

  When a side pressure is applied to the latch bolt 10 in the closed door lock state, the dust L between the doors 1 and 2 is widened, and the side wall 20 of the recess 10f of the latch bolt 10 is locked to the locking portion 51, so that Further expansion is prevented, and the latch bolt 10 is prevented from being detached from the receiving hole 42.

  The operation of reversing and unlocking the latch bolt 10 using the handles 5 and 6 is the same as in the case of the first embodiment (see [0020]).

  In each of the above-described embodiments, the double-open door has been described. However, the receiving side of the other side facing the door 1 provided with the latch bolt 10 is not a door 2 but a frame such as a fixed vertical fence (see FIG. The present invention can also be carried out on a one-sided door provided with a receiving member on the door (not shown). In this case, the door 2, the outer seat 30, the handle 31, and the mounting seat 32 are unnecessary.

  In each embodiment, the box receiver 41 is provided. However, when the latch bolt 10 is inserted into the receiving hole 42, the box receiver 41 is not provided as long as the latch bolt 10 can be prevented from rattling. But you can. In this case, a member having an appropriate shape such as a plate shape for holding the spring 46 and compressing the spring 46 when a lateral pressure is applied is necessary.

  The latch bolt 10, the receiving member 40, and the locking mechanism 50 are shown to be faced to the door in each embodiment, but these are embedded in a carved portion cut out on the end face of the door, so-called engraved type. It can also be provided.

  The latch lock of the present invention is not limited to a gate door but can be applied to a door lock such as a handle lock (see, for example, Japanese Patent Laid-Open No. 2000-291308) or a push-pull lock (see, for example, Japanese Patent Laid-Open No. 10-31173). .

It is a top view of the 1st example of the state where the latch lock concerning the present invention was attached to the door. Example 1 It is the front view seen from the room inner side. Example 1 It is the front view seen from the outdoor side. Example 1 It is the figure which looked at the receiving side in FIG. 1 from the right side surface. Example 1 It is the partial cross section top view which showed the latch bolt provided in the room inner side of the door, and its peripheral part. Example 1 It is a partial longitudinal cross-sectional view of FIG. Example 1 It is a perspective view of a latch bolt. Example 1 It is the top view which cut a part in the usual closed door lock state. Example 1 It is the top view which cut down a part of the state where the side pressure acted on the latch bolt. (Example 1) It is the top view which sectioned a part of the state where side pressure acts on a latch bolt and the side wall of the crevice of a latch bolt and the locking part of a locking mechanism have locked. Example 1 Is a plan view of cross-section a portion of a state in which the door opening by the normal operation from the closed door locked state. (Example 1) It is a partial cross section top view of the 2nd example of the state where the latch lock concerning the present invention was attached to the door. (Example 2)

Explanation of symbols

1 door 2 door 3 inner seat 5 inner handle 6 outer handle 10 latch bolt
10d Engaging portion 10f Recessed portion 11 Latch spring 12 Swelling portion 13 Lock piece 15 Actuating member 20 Side wall of recessed portion 40 Receiving member 41 Box receiving
42 receiving hole 43 receiving seat 44 communicating hole 46 spring 50 locking mechanism 51 locking portion 52 taper 55 locking member 56 spring
60 Latch lock a Receiving frame L , L1 Chile
F side pressure x latch bolt hanging dimension

Claims (3)

At the open end side of the door, provided with a latch lock having a latch bolt, set a receiving member having a receiving borehole in the door or frame of the other party to engage the latch bolt when closing locking said door facing; The planar shape is substantially diamond-shaped, and has at least an engaging surface that engages with the receiving hole of the receiving member and an inclined surface at the tip, and always protrudes from the front surface of the latch case by the biasing force of the latch spring. A latch piece that engages with an engaging portion of the latch bolt and prevents the latch bolt from reversing; the latch piece is disengaged by operating the handle, and the latch bolt is reversed. Actuating member and hub are provided; when the door is closed, the slant surface of the latch bolt contacts the seat mounted on the receiving member on the other side and the latch spring is compressed by the action of the slant inside the latch case. When the door is opened, the lock piece is disengaged from the latch bolt by the operation of the operating member and the hub, and the engaging surface of the latch bolt is pushed by the engaging portion of the seat and reversed by the opening force, In the reversible latch lock in which the engagement surface is inclined, and the latch bolt compresses the latch spring by the action of the inclined engagement surface and retracts into the latch case to be opened.
In together when a portion of the engagement surface of the inverted type latches lock the latch bolt to form a recess, in the closed door locked state, the distance between the end faces of the end face of the door and the mating of the door or frame (Chile) In order to prevent the latch bolt from extending beyond the latching dimension of the latch bolt with respect to the receiving hole, a locking mechanism having a locking portion locked to the concave portion of the latch bolt is provided on the receiving member side. Reversible latch lock. The receiving member is composed of a box holder having a receiving hole and a receiving seat which is attached to the front surface of the opening of the box holder and forms a communicating hole communicating with the receiving hole. A protrusion-like locking part projecting from the edge of the receiving hole facing the concave part of the latch bolt, and a spring provided on the outside of the box support near the locking part and moving the box receiver horizontally The inversion latch lock according to claim 1 provided. The receiving member is composed of a box holder having a receiving hole and a receiving seat which is attached to the front surface of the opening of the box holder and forms a communicating hole communicating with the receiving hole. A substantially hook-shaped locking member is pivotally supported on the outside of the box holder, and has a locking portion projecting from one end of the locking member so as to face the recess of the latch bolt. The reversible latch lock according to claim 1, wherein a spring that urges the locking portion to be always engaged with the concave portion of the latch bolt is provided at the other end portion.

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