JP2006257735A - Inside latch lock for gate - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inside latch lock which can be attached to a left-hand gate and a right-hand gate in common, and which prevents the collision of the arm or the handle with a gate post or another gate in the closing of the gate by preventing the arm and the handle from protruding from the gate. <P>SOLUTION: This inside latch lock for the gate is equipped with a rotational-angle regulating means for regulating a rotational angle of a connecting shaft for connecting the handle and the arm together, in a range of 180° on the upside of a horizontal line passing through the axial center of the connecting shaft, in such a manner that the axial center is set as a center. The inside latch lock comprises: a locking piece wherein a square hole is provided in an eccentric position, which is mounted by inserting the connecting shaft into the square hole, which protrudes a direction perpendicular to the handle and the arm, and the protruding direction of which can be switched by an angle of 180° by the selection of a direction in the mounting of the locking piece on the connecting shaft; and a rotational-angle regulating member which stops the handle and the arm by making them abut on the locking piece, when the handle and the arm are turned by an angle of 90° in a leftward or rightward direction to an unlocking position from a locking position. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an inner lock of a gate.

  The inner lock of the gate (hereinafter simply referred to as the inner lock) has a structure in which a handle projecting outside the gate site and an arm projecting inside the gate site are integrally connected by a connecting shaft. The arm is rotated through the handle, or the arm is directly rotated, and is engaged / disengaged from the arm holder provided on the gate pillar or the adjacent gate to lock / unlock.

  The rotation angle of the arm and the handle of the conventional inner lock is determined by the rotation angle restricting means provided in the inner lock, and the arm is moved from the locked position where the arm is engaged with the arm receiver in a horizontal state. And 90 degrees until the unlocking position where it is detached and standing upright (this rotation angle restriction means is referred to as first generation rotation angle restriction means).

In this way, when using the rotation angle regulating means that regulates the rotation angle of the arm to 90 degrees, the rotation direction of the arm at the time of locking / unlocking is reversed between the left-handed gate and the right-handed gate, In recent years, there are two types of inner locks for left-handed gates and right-handed gates. The inner lock has a rotation angle restricting means in which the rotation angle of the arm is enlarged by 90 degrees on each of the left and right sides of the vertical line passing through the connection axis with the connection axis as the center (this rotation angle restriction means is the second It is designed to be commonly attached to the left and right hand gates.
nothing special

  However, in the gate provided with the second generation rotation angle restricting means, the rotation angle of the arm is 90 degrees on both the left and right of the vertical line passing through the connection axis centering on the connection axis, that is, leftward about the connection axis. It is 180 degrees from the horizontal state to the right horizontal state. For this reason, when the gate with the inner lock being unlocked is closed, the handle may protrude from the gate in the direction of finding. If the door is closed with such a handle protruding, the handle may collide with the gate pillar or other gate door, resulting in damage to the handle, or a trace of the collision occurring on the gate, which may impair the aesthetics of the gate. A new problem has arisen.

  The present invention has been made in view of the above points, and the problem to be solved is that the left hand gate and the right hand gate can be commonly attached, and the arm and the handle protrude from the gate. It is an object of the present invention to provide an internal lock that prevents an arm or a handle from colliding with a gate pillar or another gate when the gate is closed.

  In order to solve the above problems, the present invention provides a handle, an arm connected to the handle by a connecting shaft made of a square bar and rotated together with the handle, and the rotation angle of the arm is centered on the axis of the connecting shaft. And a second rotation angle restricting means for restricting to a range of 180 degrees on the upper side of the horizontal line passing through the shaft center, and having a square hole at an eccentric position, and the connecting shaft in the square hole And a locking piece that protrudes in a direction perpendicular to the handle and the arm, and that can switch the protruding direction by 180 degrees by selecting an orientation when mounted on the connecting shaft, A rotation angle restricting member is provided that stops and hits the locking piece when the handle and the arm are rotated 90 degrees left or right from the locked position to the unlocked position. There.

  With the above configuration, the locking piece is attached to the connecting shaft so that the connecting shaft is inserted into the square hole and protrudes in a direction perpendicular to the handle and the arm, but by selecting the orientation when attached to the connecting shaft, The protruding direction can be switched by 180 degrees. Therefore, the direction of the locking piece can be changed according to the left-hand gate and the right-hand gate. In the case of a right-handed gate, when the handle at the locked position is turned 90 degrees clockwise as viewed from the front of the gate to the unlocked position, the locking piece hits the rotation angle regulating member and is stopped. In the case of a left-handed gate, when the handle in the locked position is turned 90 degrees counterclockwise as viewed from the front of the gate to the unlocked position, the locking piece hits the rotation angle regulating member and is stopped. Therefore, in any case, since the handle does not protrude from the door tip in the unlocked state, the handle does not collide with the gate pillar or another gate when the gate is closed.

  The rotation angle restricting member is preferably constituted by a part of a cover that slidably holds a latch that is moved to a locked position and an unlocked position by an operation of a final lock or thumb turn.

  The inner lock is usually a thumb turn that is manually operated from the inside of the site, a lock that is operated by a key from the outside of the site, and a latch that is moved to a locked position and an unlocked position by the thumb turn or the lock. And a cover that slidably holds the latch, and a circle having a notch into which the latch is fitted by being rotated through the handle by being fixed to the square hole through the connecting shaft that connects the handle and the arm. A locking device comprising a plate-like lock plate is provided. The locking piece is also mounted on the connecting shaft and requires a rotation angle restricting member that stops when it is rotated 90 degrees in the left or right direction. Therefore, a part of the cover can also be used as a rotation angle restricting member. Accordingly, there is no need to provide a separate member, so that the structure of the inner lock is not complicated with the implementation of the present invention.

  According to the present invention, one inner lock can be used in common for the left-handed gate and the right-handed gate, and in either case, the handle does not protrude from the door end of the unlocked gate. The problem of the handle colliding with the gate pillar or other gate when closing is eliminated.

  Further, when the rotation angle restricting member also serves as a part of the cover that slidably holds the latch that is moved to the locking position and the unlocking position by the final locking or thumb turn, it is not necessary to provide a separate member. Therefore, the structure of the inner lock is not complicated.

Next, embodiments of the present invention will be described with reference to the drawings.
1 is a front view of a gate to which an inner lock according to the present invention is attached, FIG. 2 is an enlarged cross-sectional view taken along line XX of FIG. 1, and FIG. 3 is an unlocked state of an arm side inner lock. 4 is a cross-sectional view taken along line YY of FIG. 3, FIG. 5 is a perspective view of an example of a locking piece, and FIG. 6 is an explanatory view showing the mounting direction and operation of the locking piece in the case of a right-handed gate. FIG. 7 is an explanatory view showing the mounting direction and operation of the locking piece in the case of the left-handed gate.

  Among the gates 2 and 2E attached to the gate pillars 1 and 1E in FIG. 1, the left gate 2 is provided with a known arm receiver 3 on the inner side of the site as shown in FIG. A handle 5 connected to and fixed to the arm receiver 3 by a connecting shaft 4 is attached. On the other hand, the inner lock 6 according to the present invention is attached to the right gate 2E. That is, the inner lock 6 shown in FIGS. 1 and 2 is a right-handed gate lock.

  The inner lock 6 has pedestals 7a and 7b having the same outer shape in contact with the inner side surface and the outer side surface of the gate 2E. The pedestals 7a and 7b are formed in a dish shape recessed on the inner surface, and a bolt 8 penetrating the gate 2E from a hole (not shown) provided in the pedestal 7a is projected from the inner surface of the pedestal 7b. It is screwed into a screw hole formed at the center of the protrusion 9 and is fixed in a state where the gate body is sandwiched between both pedestals. The base of the arm 10 passes through the pedestal 7a, the base of the handle 11 passes through the pedestal 7b, and both ends of the connecting shaft 12 made of square bars having a square cross section in the square holes provided in the bases of both. In a state where the parts are fitted, the connecting shaft 12 is tightened with screws (not shown) screwed into the respective base parts, and the parts are integrally connected.

  A guide 13 is provided on one pedestal of the inner lock 6, in the illustrated example, on the inner surface of the arm-side pedestal 7 a, and a latch 14 is slidably guided in the vertical direction to the guide. A cover 15 provided so as to shield the back surface of the pedestal is closer to the back side of the pedestal (side closer to the gate) by a rivet or a screw 16 and the like, and the latch 14 is connected to the inner surface of the pedestal 7a and the guide 13. And the cover 15 are slidably held. The latch 14 has a tapered fitting portion 14a at the lower end.

  An operating rod 17 having a rectangular cross section extending from the outer surface of the pedestal 7a to the outer surface of the pedestal 7b is provided above the connecting shaft 12, and one end of the operating rod is coupled to a thumb turn 18 protruding from the pedestal 7a. The other end of the actuating bar 17 is coupled to a rotary body (not shown) of a well-known full lock 19 for the gate provided on the outer surface of the base 7b. The rotating body is configured to rotate only when a predetermined key is inserted into the key hole opened in front of the lock lock 19 and rotated. Accordingly, the actuating rod 17 is rotated by a predetermined key inserted into the thumb turn 18 or the main lock 19. The gate rod key device is constituted by the operating rod 17, the thumb turn 18 and the lock lock 19.

  The operating rod 17 penetrates the cover 15 in a rotatable manner, and is linked to interlocking means (not shown) provided between the cover 15 and the inner surface of the base 7a. This interlocking means converts the rotational movement of the actuating rod 17 into the reciprocating movement of the latch 14, and various kinds of such movement direction changing means are known, and a detailed description thereof will be omitted. In this way, when the thumb turn 18 or the lock lock 19 is operated, the latch 14 can be moved up and down via the operating rod 1.

  A cutout portion 15 a is formed in the lower portion of the cover 15 by cutting the cover along an arc centering on the axis of the connecting shaft 12. The connecting shaft 12 has a substantially disc-shaped lock plate 20 that passes through the connecting shaft 12 in a square hole formed in the center of the lock plate and fits a part of the circumference of the lock plate into the notch 15a. It is fixed in the combined state. The lock plate 20 has two recesses 20a and 20b on the periphery thereof that open in opposite directions with respect to the center of the disk and can be fitted tightly with the fitting portion 14a of the latch 14. The opening direction of the recesses 20 a and 20 b of the lock plate 20 is a direction perpendicular to the longitudinal direction of the arm 10 and the handle 11. Therefore, when the inner lock 6 is in the locked state, that is, when the arm 10 and the handle 11 are in the horizontal state, one of the recesses 20a and 20b of the lock plate 20 is open upward.

  Therefore, at this time, the inner lock 6 can be locked by operating the thumb turn 18 or the main locking lock 19 in a certain direction to lower the latch 14 and fitting the fitting portion 14a into the recess of the lock plate. It can also be unlocked by operating the thumb turn 18 or the main lock 19 in the opposite direction to raise the latch 14 and let the fitting portion 14a escape from the recess of the lock plate.

  On the inner surface of the pedestal 7a, there is provided a circular accommodating portion 21 having a common center with the connecting shaft 12, in which the rotation angle of the connecting shaft 12 is changed from one horizontal state to the rotation center of the handle. A rotation angle restricting means (not shown) is provided for restricting to 180 degrees from the lower side of the horizontal line passing through to another horizontal state. Such a rotation angle restricting means for restricting the rotation angle to 180 can be constituted by, for example, a protrusion provided on the rotation shaft and a member provided at both ends of the rotation range of 180 degrees and stopped by hitting the protrusion.

  In the inner lock having the above configuration, in the present invention, the locking piece 22 as shown in FIG. 5 can be switched to the connecting shaft 12 in the vicinity of the lock plate 20 and the protruding direction with respect to the arm 10 and the handle 11 can be switched. It is characterized by having prepared. In FIG. 4, the locking pieces are not shown in order to avoid the drawing lines from congesting.

  The locking piece 22 is formed of a substantially strip-shaped plate material, and has a shape equal to the cross-sectional shape of the connecting shaft 21 at a position closer to one end side than the center in the longitudinal direction, that is, a square hole 22a. A contact portion 22b formed by bending the plate material is provided on the other end side far from the hole.

  With the shape described above, the locking piece 22 can be mounted in a state of penetrating the connecting shaft 12 through the square hole 22 a and in proximity to the lock plate 20. The orientation of the locking piece 22 at the time of mounting with respect to the arm 10 and the handle 11 can be changed depending on whether the gate to which the inner lock 6 is attached is right-handed or left-handed. In the case of the right-handed gate (2E in FIG. 1), as shown in FIG. 6, in the locked state of the inner lock, that is, toward the lower right angle with respect to the handle 11 in the horizontal state on the right side of the connecting shaft 12. Is attached. When the handle 11 is turned downward (clockwise) in FIG. 6 to unlock it in this mounted state, the locking piece 22 contacts the lower end edge 15b on the left side of the cover 15 when the rotation angle reaches 90 degrees. Stop in contact. That is, the handle 11 is stopped at a position that does not protrude from the door front surface of the gate 2E. Therefore, even if the gate 2E is closed in the unlocked state, the handle 11 does not collide with the gate 2.

  In the case of a left-handed gate (2 in FIG. 1), as shown in FIG. 7, in the locked state of the inner lock, that is, toward the handle 11 in the horizontal state on the left side of the connecting shaft 12 and directed downward at a right angle. Is attached. When the handle 11 is turned downward (counterclockwise) in FIG. 76 to unlock it in this mounted state, the locking piece 22 is brought into contact with the lower end edge 15b on the right side of the cover 15 when the rotation angle becomes 90 degrees. Stops in contact. That is, the handle 11 is stopped at a position where it does not protrude from the door end surface of the gate 1 in this case. Therefore, even if the gate 2 is closed in the unlocked state, the handle 11 does not collide with the gate 2E.

  In the structure of the locking piece 22, the contact portion 22b is formed by bending the locking piece plate material because the cover 15 and the lock plate 20 exist on a common plane. Since it is provided close to the lock plate 20, when the locking piece 22 is rotated in a predetermined direction by the connecting shaft 12, the contact portion 22 b exists on both sides of the notch portion 15 a at the lower end portion of the cover 15. This is to ensure contact with the lower end edge 15b to be stopped. Therefore, when the locking piece is rotated in a predetermined direction, the contact portion does not need to be bent if the locking piece is in a positional relationship where it is stopped at a part of the cover.

  Further, in the above embodiment, the cover 15 that slidably holds the lock plate is used as a member that restricts the rotation angle of the locking piece 22 to 90 degrees when the handle 11 is rotated in the unlocking direction. Since there is no need to provide a new member, there is an advantage that an increase in cost can be avoided. However, the present invention is not limited to this example, and in the technical scope of the present invention, an existing component other than the cover 15 may be used depending on different types of inner locks, or a new member may be used. Appending is also included. Therefore, the thing which changed the locking piece so that it may have a shape which fits those rotation angle control members is also included.

The front view of the gate door to which the inner locking concerning this invention is attached. The expanded sectional view along the XX line of FIG. The side view in the unlocking state of an arm side inner locking. FIG. 4 is a cross-sectional view taken along line YY in FIG. 3. The perspective view of a locking piece. Explanatory drawing which shows the attachment direction and effect | action of a latching piece in the case of a right-hand gate. Explanatory drawing which shows the attachment direction and effect | action of a locking piece in the case of a left-handed gate.

Explanation of symbols

1,1E Gate pillar 2,2E Gate 6 Inner lock 7a, 7b Base 10 Arm 11 Handle 12 Connecting shaft
14 Latch 15 Cover 15b Rotation angle regulating member (part of cover: lower edge)
20 Locking plate 21 Receiving part of rotation angle restricting means 22 Locking piece

Claims (2)

A handle, an arm connected to the handle by a connecting shaft extending from a square bar and rotated together with the handle, and a rotation angle of the arm about the axis of the connecting shaft 180 above the horizontal line passing through the axis In the gate lock with the rotation angle regulating means for regulating the range of degrees,
There is a square hole at an eccentric position, and the connecting shaft is inserted through the square hole, is mounted in a direction perpendicular to the handle and the arm, and the orientation at the time of mounting on the connecting shaft is selected. A locking piece whose projecting direction can be switched by 180 degrees, and a rotation that hits the locking piece and stops it when the handle and the arm are rotated 90 degrees left or right from the locked position to the unlocked position. An internal lock for a gate characterized by comprising an angle regulating member.   2. The rotation angle restricting member is constituted by a part of a cover that slidably holds a latch that is moved to a locked position and an unlocked position by an operation of a final locking or thumb turn. The inner locking for the gate described in 1.

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