JP2009041329A - Door lock - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a door lock suitable for use by elderly persons, toddlers and physically handicapped persons having less muscular strength, for example, by which a door can be opened and closed easily and quickly, operation of a lever handle is prompted to be switched over from conventional rotation operation to up/down or right/left slide operation, new and simple operation of the lever handle is materialized, and reduction in size and weight is realized. <P>SOLUTION: A lock case 6 includes a latch bolt 19 provided to be movable back and forth. A lever cam 27 is arranged in a manner that an end thereof is linked with the back and forth movement of the latch bolt 19 and the other end is linked with the movement of lever handles 126, 127. The door lock is provided with the latch bolt 19 and the lever cam 27. A swing cam 28 which can be linked to the back and forth movement of the latch bolt 19 is rotatably provided. The lever cam 27 is connected to cam holes 61, 62 formed in the swing cam 28 in a manner of being swingable or being movable up/down or right/left. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention is suitable for use by elderly people, infants, and handicapped people with weak arm strength, for example, and can easily and quickly open and close the door, and the lever handle can be operated from the conventional rotational operation to the vertical or horizontal sliding operation. The present invention relates to a door lock that promotes the switching to a lever, realizes a new and simple operation of a lever handle, and reduces its size and weight.

  In general, a door lock is formed by embedding a lock in the side edge of the door, inserting a square core bar integrated with a lever handle into a square hole of the lock door, and connecting the tip of the square core bar to a lever hand inside the door. It was inserted and fixed with screws, the lever handle was rotated, the lock was locked and unlocked, and the dead bolt provided on the lock was moved forward and backward (for example, see Patent Document 1).

  However, the door lock requires an operation of rotating the lever handle approximately 45 ° for locking and unlocking, and the operation is troublesome and requires a certain level of arm strength, making it difficult for elderly people, infants, and handicapped people to use weak arms. There was a problem of becoming.

  In order to solve such a problem, the square core to be inserted into the square hole of the latch lock is fixed to the rotation shaft, the rotation shaft is inserted into the cylindrical member, an inclined groove is formed on the peripheral surface of the cylindrical member, An engagement pin is screwed into a screw hole provided on the peripheral surface of the rotary shaft from the outside of the inclined groove, and the rotary shaft is rotatably and slidably attached to the cylindrical member. There is one in which a latch is unlocked by screwing a handle and pushing or pulling or rotating the handle (see, for example, Patent Document 2).

  However, although the latch lock can select the push-pull or rotation operation of the handle, they require a force greater than the elasticity of the push spring for the push-pull of the handle, and the handle is rotated approximately 45 times. ° As a result, each operation requires a certain level of arm strength, so it is practically difficult for elderly people, infants, and people with disabilities to use weak arms, and the handle is always attached to the outside by a push spring. Due to the projecting force, the occupied space of the handle increases, and there is a problem that it is difficult to secure the space.

  In order to solve such a problem, an engagement plate is provided at the inner end of the slide member via a push spring so that the engagement plate can be projected and retracted, and an inclined surface of the engagement plate is provided in the window portion of the latch lock so that it can be inserted and removed. A V-shaped groove is formed on the outer end of the member, a claw-shaped portion protruding from the spherical portion is arranged to be engageable with the V-shaped groove, and an attachment shaft portion is protruded from the other side of the spherical portion, There is one in which the shaft portion is pivotably connected to a handle via a spherical holding member, and the latch lock can be unlocked by operation in any direction of the handle (see, for example, Patent Document 3).

  However, although the latch lock can be operated in any direction of the handle, the swing of the handle requires a force greater than the elasticity of the push spring to push and pull the slide member, and the handle needs to be rotated to rotate the handle. As a result of having to rotate approximately 45 ° and requiring a certain level of arm force for each operation, it is practically difficult for elderly people, infants, and people with disabilities to use weak arms. Therefore, there is a problem that the space occupied by the handle increases and it is difficult to secure the space.

Japanese Patent No. 3015283 JP 2002-213133 A Japanese Patent Laid-Open No. 2004-1000027

  The present invention solves such problems and is suitable for use by elderly people, infants, and handicapped persons with weak arm strength, and can easily and quickly open and close the door, and the lever handle can be operated from the conventional rotational operation. An object of the present invention is to provide a door lock that promotes switching to a sliding operation up and down or left and right, realizes a new and simple operation of a lever handle, and reduces its size and weight.

  The invention according to claim 1 is a latch bolt provided on the lock case so as to be movable forward and backward, and a lever cam having one end linked to the forward and backward movement of the latch bolt and the other end linked to the operation of the lever handle. A swing cam that can be linked to the forward and backward movement of the latch bolt is rotatably provided, and the lever cam is swung or vertically or horizontally in a cam hole provided in the swing cam. Compared to a structure in which the lever cam is engaged with the latch bolt and the lever bolt is engaged and the latch bolt is directly moved forward and backward by the operation of the lever cam, the latch bolt and the lever cam are reduced in size and weight. , Reduce the operating displacement or rotation angle of the lever cam, reduce the operating displacement or operation angle of the lever handle, open and close the door easily and quickly, and reduce the burden of opening and closing the lever handle Weak arm strength It is suitable for use by elderly people, infants, and handicapped persons, and it can be used for sliding operation to the top and bottom or left and right in addition to the turning operation of the lever handle to encourage new and simple operation of the lever handle. I am doing so.

The invention of claim 2 is provided with a plurality of cam holes in the rotational radius direction of the swing cam, and the connecting position between the swing cam and the lever cam can be selected via the cam hole, and the lever can be configured with a simple configuration. -The operation displacement or operation angle of the cam or lever handle can be selected, so that it can respond to various opening and closing states of the door.
According to a third aspect of the present invention, the lever cam is pivotably connected to a cam hole in the outer radial direction of the swing cam so as to suppress the pivot angle of the lever cam with respect to the backward movement of the latch bolt. , By reducing the operating displacement or operating angle of the lever cam or lever handle, opening and closing the door easily and quickly, and reducing the burden of opening and closing the lever handle, the elderly and infants with weak arm strength, Suitable for use by people with disabilities.

According to a fourth aspect of the present invention, the pivoting positions of the swing cam and the lever cam and the connecting positions thereof are arranged in a straight line when the latch bolt protrudes to simplify the configuration of the latch bolt and the latch bolt. At the time of reverse, the connecting position of the swing cam and the lever cam is moved to suppress the operation displacement or the operation angle of the lever cam or lever handle.
According to a fifth aspect of the present invention, there is provided a rotating plate that can move together with the lever cam, a slide plate is linked to one side of the rotating plate, the slide plate is linked to the operation of the lever handle, -The opening and closing of the door is realized by operating the slide plate and the rotating plate for the operation of the handle.
At that time, by suppressing the rotation angle of the lever cam, the door can be opened and closed easily and quickly by the operation of the lever handle, reducing the burden of the lever handle opening and closing operation, Suitable for use by infants and people with disabilities.
According to a sixth aspect of the present invention, a slide shaft capable of connecting a lever handle is provided on the slide plate so as to open and close the door by operating the lever handle.

According to a seventh aspect of the present invention, the slide plate is linked to the vertical movement, left-right movement, or rotation of the lever handle to realize opening / closing of the door by the vertical movement, left-right movement, or rotation of the lever handle. The operation of the lever is switched from the conventional rotation operation to the slide operation to the top or bottom or left and right, realizing a new and simple operation of the lever handle, which is used by elderly people, infants, and people with disabilities who are difficult to rotate the lever handle. It is suitable for.
According to an eighth aspect of the present invention, the rotating plate and the slide plate are provided on a handle mounting seat mounted on the mounting base side of the lever handle, so that the handle mounting seat is multifunctional and unitized.
According to a ninth aspect of the present invention, the slide shaft is slidably provided on the handle mounting seat, and an end of the shaft protrudes outside the handle mounting seat so that the lever handle can be moved vertically or horizontally. ing.

According to a tenth aspect of the present invention, the lever cam is provided so as to be movable up and down or pivoted in linkage with the downward or upward movement of the lever handle, and the operation of the lever cam corresponding to the operation of the lever handle is provided. As a result, a new and simple operation of the lever handle is realized.
According to the eleventh aspect of the present invention, the latch bolt can be moved forward and backward in conjunction with the downward or upward movement of the lever handle, and the downward or upward movement of the lever handle can be used instead of the turning operation of the lever handle. The door can be opened and closed by the use of the door, so that it can be used by elderly people, infants, and persons with disabilities who are difficult to rotate the lever handle, and a new lever handle opening and closing operation is realized.

According to the invention of claim 12, a handle lever protrudes from the base of a lever handle that can be moved downward or upward, and the handle lever is linked to the lever cam that can be moved up and down to operate the handle lever. Thus, the door is opened and closed by a lever handle that can be moved downward or upward.
According to a thirteenth aspect of the present invention, the lever handle is connected to the surface of the door or the handle mounting seat so as to be pivotable in the vertical direction, and the operation displacement in the vertical direction of the lever handle is reduced by the action of the lever. Opening and closing operations are performed easily and quickly, making it suitable for use by elderly people, infants, and the handicapped who have weak arm strength.
According to the fourteenth aspect of the present invention, the handle levers of the lever handles arranged inside and outside the door are inserted into the square holes of the lever cam so as to be engageable with each other, and the door opening and closing by the inside and outside lever handles is realized. ing.

  According to the first aspect of the present invention, a swing cam that can be linked to the forward and backward movement of the latch bolt is rotatably provided, and the lever cam is swung or moved vertically or horizontally in a cam hole provided in the swing cam. Since the lever cam is engaged, the lever bolt is engaged with the latch bolt, and the latch bolt and the lever cam can be reduced in size and weight as compared with the structure in which the latch bolt is directly moved back and forth by the operation of the lever cam. Reducing the operating displacement or turning angle of the lever cam, reducing the operating displacement or operating angle of the lever handle, opening and closing the door easily and quickly, and reducing the burden of opening and closing the lever handle The lever handle is suitable for use by elderly people, infants, and handicapped persons who have weak arm strength, and can be operated not only by turning the lever handle but also by sliding it up and down or left and right. It is possible to urge flights operation.

In the invention of claim 2, since a plurality of cam holes are provided in the rotational radial direction of the swing cam, and the connecting position of the swing cam and the lever cam can be selected via the cam hole, a simple configuration is provided. Thus, the operation displacement or operation angle of the lever cam or lever handle can be selected, and there is an effect corresponding to various open / close states of the door.
According to a third aspect of the present invention, the lever cam is rotatably connected to a cam hole in the direction of the rotation radius of the swing cam so as to suppress the rotation angle of the lever cam with respect to the backward movement of the latch bolt. In addition, the operating displacement or operating angle of the lever cam or lever handle is reduced, the door can be opened and closed easily and quickly, and the burden of opening and closing the lever handle is reduced. There is an advantageous effect for use by the disabled.

According to the invention of claim 4, since the pivot support positions of the swing cam and the lever cam and the connection positions thereof are arranged in a straight line when the latch bolt protrudes, the configuration thereof can be simplified and the latch When the bolt is retracted, the connecting position of the swing cam and the lever cam is moved, and the operation displacement of the lever cam or lever handle or the suppression of the operation angle can be realized.
Since the invention of claim 5 is provided with a rotating plate that can move together with the lever cam, the slide plate is linked to one side of the rotating plate, and the slide plate is linked to the operation of the lever handle. The opening and closing of the door can be realized by operating the slide handle and the rotating plate for the operation of the lever handle.
At that time, by suppressing the rotation angle of the lever cam, the door can be opened and closed easily and quickly by the operation of the lever handle, reducing the burden of opening and closing the lever handle, It is suitable for use by infants and people with disabilities.
According to the sixth aspect of the present invention, since the slide shaft that can connect the lever handle is provided on the slide plate, the door can be opened and closed by operating the lever handle.

According to a seventh aspect of the present invention, the slide plate is linked to the vertical movement, left-right movement, or rotation of the lever handle to realize opening / closing of the door by the vertical movement, left-right movement, or rotation of the lever handle. The operation of the lever is switched from the conventional rotation operation to the slide operation to the top or bottom or left and right, realizing a new and simple operation of the lever handle, which is used by elderly people, infants, and people with disabilities who are difficult to rotate the lever handle. Has a suitable effect.
According to the eighth aspect of the present invention, since the rotating plate and the slide plate are provided on the handle mounting seat mounted on the mounting base side of the lever handle, the handle mounting seat can be multi-functional and unitized.
According to the ninth aspect of the present invention, since the slide shaft is slidably provided on the handle mounting seat and the shaft end is disposed so as to protrude outward from the handle mounting seat, it corresponds to the vertical or horizontal movement of the lever handle. A new and simple operation of the lever handle can be realized.

According to the invention of claim 10, since the lever cam is provided so as to be vertically movable or pivotable in association with the downward or upward movement of the lever handle, the operation of the lever cam corresponding to the operation of the lever handle is provided. And a new and simple operation of the lever handle can be realized.
In the invention of claim 11, since the latch bolt can be moved forward and backward in conjunction with the downward or upward movement of the lever handle, the lever handle can be moved downward or downward instead of turning the lever handle. The door can be opened and closed by upward movement, so that it can be used by elderly people, infants, and handicapped persons who are difficult to rotate the lever handle, and a new lever handle opening and closing operation can be realized.

According to the twelfth aspect of the present invention, a handle lever protrudes from the base of a lever handle that can be moved downward or upward, and the handle lever is linked to the lever cam that can be moved up and down. By operation, the door can be opened and closed by a lever handle that can move downward or upward.
In the invention of claim 13, since the lever handle is connected to the surface of the door or the handle mounting seat so as to be pivotable in the vertical direction, the lever operation action reduces the vertical displacement of the lever handle, and the door The opening and closing operation can be performed easily and quickly, and it is suitable for use by elderly people, infants, and disabled people with weak arm strength.
According to the fourteenth aspect of the present invention, since each handle lever of the lever handle arranged inside and outside the door is inserted into the square hole of the lever cam so as to be engageable, the door can be opened and closed by the inside and outside lever handles. can do.

1 to 5, reference numeral 1 denotes a frame disposed opposite to a side end surface of the door 2 when the door is closed, and a trolley 3 is disposed at a middle and high position thereof. Is embedded to allow a latch bolt described later to enter and exit.
The door 2 is pivotally connected to a suspension base via a hinge (not shown), a rectangular lock mounting hole 4 is formed in the side end portion, and a lock 5 is embedded in the mounting hole 4. Yes.
The lock 5 is formed in a box shape by connecting a lock cover 7 to a lock case 6, and among these, the lock case 6 is formed by pressing a galvanized steel plate into a substantially box shape, and a front piece 8 is formed around it. And the side piece 9 are formed upright.

The front piece 8 is formed to be longer than the vertical width of the lock case 6, a substantially dome-shaped latch bolt insertion hole 10 is formed at the center thereof, and the latch holes 11 are formed on both sides of the insertion hole 10. Are formed so as to protrude inward, and screw holes 13 are formed at both ends of the front piece 8.
The side piece 9 is composed of upper and lower side pieces 9a and 9b arranged opposite to each other and a rear piece 9c arranged opposite to the front piece 8, and one or two latching protrusions 14 are provided at the upper end portions thereof. These are formed so as to be engageable with the notch 15 or the locking groove 16 of the lock cover 7.

  In the figure, 17 is a screw hole formed at the center of the rear piece 9c, 18 is a front plate that is arranged on the outside of the front piece 8, and a through hole 20 through which the latch bolt 19 is inserted is formed at the center. Screw holes 21 communicating with the screw holes 13 are formed at the upper and lower ends.

A locking groove 22 and a plurality of engagement holes 23 to 25 are formed on the bottom surface of the lock case 6, a latch holder 26 is attached to the locking groove 22, and a lever cam is connected to the engagement holes 23 to 25. 27, a swing cam 28, and a lock cam 29 are rotatably attached.
Of these, the locking groove 22 is formed vertically long on the front piece 8 side of the bottom surface of the lock case 1, and the latching piece 30 of the latch holder 26 is fitted in the locking groove 22.

  The latch holder 26 is formed in a substantially prismatic shape by a synthetic resin such as polyacetal which is strong and excellent in slidability, and one of the latching pieces 26a projecting up and down on one side thereof is fitted into the locking groove 22. And the other side end is engaged with the corner portion of the lock case 6 and attached.

A notch 30 is formed on one side of the latch holder 26, and a latch bolt 19 made of zinc die casting is accommodated in the notch 30 so as to be able to enter and exit. A through hole 31 is formed in the bottom of the notch 30, and a shaft portion 32 integral with the latch bolt 19 is slidably inserted into the through hole 31. A substantially disc-shaped flange 34 is formed through the flange 34, and the flange 34 is slidably engaged with the notch groove 35 of the swing cam 28.

A conical coil-shaped latch spring 36 is inserted into the shaft portion 32, and both ends of the pulling 36 are disposed so as to be engageable with the latch bolt 19 and the bottom of the notch 30, and the latch bolt 19 is moved forward through its elasticity. Is energized.
In the figure, reference numeral 37 denotes a synthetic resin latch shock attached to the sliding surface of the latch bolt 19, and 38 denotes a synthetic resin latch guide, which is fitted to the outer opening edge of the latch bolt insertion hole 10. .

The other side of the latch holder 26 is formed in a substantially prismatic shape, and a concave hole 39 is formed therein, and one end of a lever-like spring cam 80 is accommodated in the concave hole 39.
A convex portion 40 protrudes from the center of the bottom portion of the concave hole 39 and can be engaged with one end portion of the lever cam spring 80 on the large diameter side.
An engaging projection 41 is formed at the opening edge of the notch 30, and the projections 41 and 41 are disposed between the stepped portions 12 and 12 so as to be engageable.

On the other hand, the lever cam 27 is formed in a substantially key shape with the same synthetic resin as the latch holder 26, and cam plates 42 and 43 are fitted on both sides thereof.
The lever cam 27 includes a substantially rectangular cam base 44 and an elongated cam arm 45. Cylindrical bosses 46 project from both sides of the cam base 44, and square holes 47 penetrate the bosses 46. The rectangular tube portion 48 is formed so as to protrude from the opening edge of the square hole 47.

In the figure, 49 is a latching pin projecting in the vicinity of the boss 46, and 50 is a projection projecting from the side surface of the cam base 44, which can be engaged with the other end of the lever cam spring 38. ing.
Pin holes 51 and 52 having the same diameter are formed in the intermediate portion and the tip portion in the length direction of the cam arm 45, and a pin 53 protrudes between the pin holes 51 and 52.

The cam plates 42 and 43 are formed symmetrically, are substantially the same, and the same reference numerals are used for the same components.
The cam plates 42 and 43 are formed by pressing a galvanized steel plate into a substantially S-shaped cross section, and projecting portions 54 that can be fitted with the bosses 46 project from the step portions 42a and 43a on the cam base 44 side. The convex portion 54 is rotatably engaged with the engagement hole 23, and the convex portion 54 is formed with a square hole 55 that can be fitted to the square tube portion 48.
A pin hole 56 is formed at a position close to the convex portion 54, and the pin 49 can be fitted into the hole 56.

  Two large and small pin holes 57 and 58 are formed on the other side of the step portions 42a and 43a of the cam plates 42 and 43, and the pin 53 can be fitted into the small diameter pin hole 57. The pin holes 51 and 52 are formed to have the same diameter, and the pivot pins 59 can be fitted into the pin holes 51 and 52 or the pin holes 51.

  The oscillating cam 28 is formed by pressing a galvanized steel plate into a substantially U-shaped cross section, facing the substantially triangular bent piece 28a, and projecting a pin 60 at one end thereof. The pin 60 is rotatably inserted into the engagement hole 24.

Large and small shaped cam holes 61 and 62 are formed opposite to each other at the intermediate part and the tip part of the bent pieces 28a and 28a, and these cam holes 61 and 62 include arc-shaped grooves centered on the pin 60, One of the cam holes 61 and 62, in the embodiment, the pivot pin 59 is inserted into the cam hole 62 on the distal end side.
The lever cam 27 and the cam plate 42, 43, which are integrally assembled, are inserted between the bent pieces 28a, 28a, and the pivot pins 59 are inserted into the pin holes 58, 52, respectively. Yes.

  The lock cam 29 includes a lock cam main body 63 made of the same synthetic resin as described above, a pair of lock cam plates 64 made of a steel plate, and a lock spring 65. Of these, the lock cam main body 63 is formed into a deformed cylindrical shape. A shaft tube portion 66 projects from the top and bottom of one end thereof, and a square hole 67 is formed through the tube portion 66. A square core rod (not shown) of a thumb knob (not shown) is formed in the square hole 67. Can be engaged.

  The lock cam plates 64 and 64 are arranged at the same height as the bent piece 28a, and when the thumbtan is unlocked, the outer end of the lock cam plate 64 is connected to the side piece between the upper piece 9a and the rear piece 9c. In addition, when the thumbtan is locked, the inner end portion thereof is disposed so as to be engageable with the end portions of the bent pieces 28a, 28a.

  In the figure, reference numeral 68 denotes a locking pin that projects from the top and bottom of the other end of the lock cam main body 63. A hook portion at one end of the lock spring 65 is attached to the intermediate portion of the one locking pin 68, and the hook at the other end. The portion is latched by a spring hook 69 formed on the rear piece 9c.

  The lock cam plate 64 is formed by pressing a steel plate into a substantially fan shape, and a through hole 70 is formed at one end of the lock cam plate 64 so that the shaft tube portion 66 can be fitted. A through hole 71 into which 68 can be fitted is formed.

The lock cover 7 is formed by press-molding a galvanized steel plate and is formed into a rectangular shape having substantially the same shape as the lock case 6. A latch piece 72 having a substantially L-shaped cross section is formed on one side thereof, and the latch piece. 72 is engaged with a concave portion on the outer surface of the stepped portion 12 so that the bent edge at the tip thereof can be hooked into the hooking hole 11.
A bent piece 73 that can be engaged with the rear piece 9 c is formed on the other side of the lock cover 7, and a screw hole 74 is formed in the bent piece 73. It is inserted and can be screwed into the screw hole 17.

  In addition, in the figure, 76 is a latching groove formed in the lock cover 7, which can be engaged with the latch piece 26a on the upper side of the latch holder 26, and 77 is rotatably accommodated on the upper convex portion 54. , 78 is an engagement hole into which the upper pin 60 of the swing cam 28 can be inserted, and 79 is an engagement hole into which the upper shaft cylinder portion 66 of the lock cam 29 can be inserted.

When assembling the door lock configured as described above, the latch holder 26 is first assembled inside the lock case 6.
At this time, the lower end portion of the latch holder -26 is positioned at the corner between the front piece 8 and the lower piece 9b, the front end portion is engaged with the inside of the front piece 8, and the engaging protrusions 41 and 41 are connected to the step portion 12. , 12 and the lower latching piece 26 a is inserted into the latching groove 22 of the lock case 6. This situation is as shown in FIG.

Next, the shaft portion 32 of the latch bolt 19 is inserted into the through hole 31 of the latch holder 26, and the lower pin 60 protruding from the swing cam 28 is inserted into the engagement hole 24 of the lock case 6. Then, the swing cam 28 is assembled in the lock case 6 and the flange 34 of the latch bolt 19 is disposed in the notch groove 35 so as to be engageable. This situation is as shown in FIG.
Thereafter, the latch guide 38 is inserted into the latch bolt 19, and the rear end portion is inserted into the latch bolt insertion hole 10.

Next, the lever cam assembly is assembled by sandwiching the cam plates 42 and 43 above and below the lever cam 27, and the convex portion 54 of the lower cam plate 43 is engaged with the engagement hole 23 of the lock case 6. And incorporate the lever cam assembly. This state of incorporation is as shown in FIG.
The tip of the lever cam assembly is inserted between the bent pieces 28a, 28a of the swing cam 28, and the pin hole 58 and the pin hole 52 are positioned in the cam hole 62 of the swing cam 28. The pivot pin 59 is inserted into the pin holes 58 and 52 from the outside of 62. This situation is as shown in FIG.

Thereafter, one end of the lever cam spring 80 is accommodated in the concave hole 39 of the latch holder 26, and the other end portion is disposed so as to be engageable with the convex portion 50 of the lever cam 27.
Thus, due to the elasticity of the spring 80, the lever cam 27 is urged so as to be rotatable about the convex portion 54, and the pivot pin 69 is moved to engage with the opening edge of the cam hole 62. Then, the swing cam 28 is pushed forward around the pin 60 and the latch bolt 19 is urged through the flange 34 so as to protrude outward.
Further, the shaft cylinder 66 on the lower side of the lock cam 29 is inserted into the engagement hole 25 of the lock case 6, the lock cam assembly is assembled, and the hook portion at one end of the lock spring 65 is spring-loaded on the rear piece 9c. Hang on 69.

Thereafter, the lock cover 7 is positioned on the upper side of the lock case 6, the notch 15 is engaged with the latch protrusion 14 of the upper and lower pieces 9 a, 9 b, and the latch groove 16 is latched with the rear piece 9 c. The projection 14 a is fitted, and the bent edge at the tip of the bent piece 72 is hooked on the hook hole 11.
Further, the bent piece 73 is engaged with the rear piece 9c, the screw hole 74 and the screw hole 17 are aligned, the screw 75 is inserted into the screw hole 74, the screw shaft is screwed into the screw hole 17, and the lock cover If -7 is fixed to the lock case 6, a series of assembly is completed.

When the lock 5 assembled in this way is attached to the door 2, the lock attachment hole 4 is formed in the door 2 as in the conventional case, the lock 5 is accommodated in the lock attachment hole 4, and the lever is mounted in the square hole 55 of the lever cam 27. -Insert the square rod of the handle (both not shown), and insert the square pin of the thumb knob (both not shown) into the square hole 67 of the lock cam 29.
Then, the front plate 18 is superposed on the outside of the front piece 8, screws (not shown) are inserted into the screw holes 21 and 13, and are screwed into the side end portions of the door 2 to be fixed. This attachment state is as shown in FIG.

  In such a lock 5, when the lock cam 29 is unlocked, the base of the lever cam 27 is pressed against the rear piece 9 c by the elasticity of the lever cam spring 80, and the convex portion 54 is centered on the engagement hole 23. Rotating, the tip part is rotated forward, and the pivot pin 59 is moved to this.

Therefore, the pivot pin 59 engages with the opening edge of the cam hole 62, and the swing cam 28 is pushed forward around the pin 60 against the elasticity of the latch spring 36. The engaging flange 34 moves together, and the latch bolt 19 protrudes forward.
Therefore, if the latch bolt 19 is protruded and engaged in the trolley 3 by the above-described operation after the door 2 is closed, the closed state is maintained.

When the door is closed, the pivot center of the lever cam 27, the pivot pin 59, and the pin 60 which is the pivot center of the swing cam 28 are located on the same straight line as shown in FIG. .
When the door 2 is opened from this closed state, the lever handle (not shown) is rotated against the elasticity of the lever cam spring 80.
As a result, the square core rod (not shown) is moved to the lever handle, and the lever cam 27 is rotated clockwise in FIG.

Therefore, the pivot pin 59 that moves together with the lever cam 27 pulls the cam hole 62, and the swing cam 28 rotates about the pin 60 counterclockwise in FIG. 1, via the notch groove 35. The flange 34 is pulled and moved.
As a result, the latch bolt 19 is pulled toward the lock case 6 against the elasticity of the latch spring 36, and retracts from the trolley 3 so that the door 2 can be opened.
At that time, the rocking cam 28 is engaged with the lock cam plate 64 of the lock cam 29 at the end of the rotation, and stops the rotation. This situation is as shown in FIG.

In this case, the rotation angle θ of the lever handle or lever cam 27 is determined by the amount of displacement of the pivot pin 59 capable of retracting the latch bolt 19 from the trolley 3, and the amount of displacement is a square hole that is the center of rotation. It is proportional to the turning radius of 55 and the pivot pin 59.
Therefore, if the turning radius is increased, the latch bolt 19 can be retracted at a small turning angle of the lever cam 27.
In the embodiment, the rotation angle θ of the lever handle is set to approximately 30 °, and the lever handle can be operated easily and quickly as compared with the conventional 45 ° rotation. It is suitable for use by weak elderly people, infants, and disabled people.

  In this embodiment, the swing cam 28 is linked to the lever cam 27, the latch bolt 19 is engaged with the swing cam 28, and the latch bolt 19 is moved forward and backward. Since the latch bolt 19 is not directly engaged and retracted, the shaft portion 32 of the latch bolt 19 can be shortened and the lock case 6 can be reduced in size and weight.

  When the lever handle is released after the door 2 is opened, the lever cam 27 is rotated back by the elasticity of the lever cam spring 80, and the lever handle is rotated to the original position via the moving square core rod. To do.

  Therefore, the pivot pin 59 that moves together with the lever cam 27 is engaged with the opening edge of the cam hole 62, the swing cam 28 is pushed back around the pin 60, and the flange 34 is pushed. By being moved, the latch bolt 19 protrudes outward by the elasticity of the latch spring 36. This situation is as shown in FIG.

When the door 2 is closed under such a situation, the latch bolt 19 is engaged with the end face of the frame 1 and pushed back against the elasticity of the latch spring 36.
For this reason, the swing cam 28 engaged with the reduced diameter portion 33 rotates about the pin 60 counterclockwise in FIG. 1, and the cam hole 62 moves in the same direction. At that time, the lever cam 27 maintains its original position by the elasticity of the lever cam spring 80 and stops.

Thereafter, when the door 2 is further closed and immediately before the door is closed, the latch bolt 19 is moved to the trolley 3 position, and the latch bolt 19 is dropped into the trooke 3.
For this reason, the latch bolt 19 protrudes outward by the elasticity of the latch spring 36 and is positioned so as to be engageable with the inner surface of the troyoke 3.
On the other hand, the flange 34 moves together with the protrusion operation of the latch bolt 19, and the swing cam 28 is pulled back around the pin 60 through the notch groove 35 engaged with the flange 34, and the door is closed as shown in FIG. Form.

  When the thumb knob (not shown) is operated when the door is closed, the lock cam 29 is rotated clockwise in FIG. 1, and the lock cam 29 is locked, the ends of the lock cam plates 64 and 64 are bent pieces. When engaged with 28a, 28a, the counterclockwise rotation about the pin 60 of the swing cam 28 is prevented, the latch bolt 19 is prevented from retreating from the inside of the trolley 3, and the door 2 is kept closed. Is done.

6 to 37 show other embodiments of the present invention, and the same reference numerals are used for the components corresponding to the above-described embodiments.
6 to 9 show a second embodiment of the present invention. In this embodiment, the connecting position of the lever cam 27 with respect to the swing cam 28 is changed, and the lever cam 27 with respect to the swing cam 28 is changed. By increasing the turning radius, the turning angle θ of the lever cam 27 is set to be relatively small, and the turning angle of the lever handle is further reduced so that the door 2 can be opened.

For this reason, in this embodiment, cam plates 42 and 43 of the lever cam 27 are modified. The situation of the modification is as shown in FIG. 8, and the other sides of the step portions 42a, 43a of the cam plates 42, 43 are extended, and pin holes 81 having the same diameter as the pin holes 51, 52 are formed at their ends. Forming. Other components are the same as those of the cam plates 42 and 43 described above.
Further, since the configuration other than the cam plates 42 and 43 can share the configuration of the above-described embodiment, it can be easily adapted to the modification, and can be manufactured easily and inexpensively.

When the lever cam 27 is assembled using the modified cam plates 42 and 43, the cam plates 42 and 43 are sandwiched between the upper and lower sides of the lever cam 27, and the respective pin holes 57 are fitted to the upper and lower pins 53. Combine the lever cam assembly.
Then, the convex portion 54 of the lower cam plate 43 is inserted into the engagement hole 23 of the lock case 6 to incorporate the lever cam assembly. The state of incorporation is as shown in FIG.

  Next, the tip of the lever cam assembly is inserted between the bent pieces 28a, 28a of the swing cam 28, and the pin holes 81, 81 are positioned in the cam holes 61, 61 of the swing cam 28, and the cam The pivot pin 59 is inserted into the pin holes 81 and 81 from the outside of the hole 61. This state of incorporation is as shown in FIG. The assembling of the swing cam 28 and the lever cam 27 to the lock case 6 is the same as in the above-described embodiment.

The closing state of the door 2 in this embodiment is as shown in FIG. 6 and is the same as that of the above-described embodiment except that the position of the pivot pin 59 is changed to the cam hole 61.
When the door 2 is opened from such a closed state, the lever handle (not shown) is rotated against the elasticity of the lever cam spring 80 so that the lever cam 27 is centered on the square hole 55 as shown in FIG. Turns clockwise.

As a result, the cam hole 61 is pulled through the pivot pin 59, the swing cam 28 rotates about the pin 60 counterclockwise in FIG. 6, and the flange 34 passes through the notch groove 35. Be pulled.
As a result, the latch bolt 19 is pulled toward the lock case 6 against the elasticity of the latch spring 36, and retracts from the trolley 3 so that the door 2 can be opened.
At that time, the rocking cam 28 is engaged with the lock cam plate 64 of the lock cam 29 at the end of the rotation, and stops the rotation. This situation is as shown in FIG.

  In this case, the pivot radius of the pivot pin 59 changes from the cam hole 62 to the cam hole 61 and increases in diameter as compared with the above-described embodiment, and the rotational displacement increases. The required rotation angle θ of the lever cam 27 is relatively smaller than that in the above-described embodiment, and the door 2 can be opened by further suppressing the rotation angle of the lever handle.

  In the embodiment, the rotation angle θ of the lever handle or lever cam 27 is set to approximately 10 °. Therefore, the lever handle can be operated easily and quickly as compared with the above-described embodiment, and the rotation operation of the lever handle can be reduced. Therefore, it is suitable for use by elderly people, infants, and handicapped persons with weak arm strength.

  10 to 17 show a third embodiment of the present invention. In this embodiment, lever handles 82 and 83 arranged inside and outside the door 2 are slid up and down or left and right instead of rotating. The door 2 can be opened, a novel door opening method is proposed, and it is suitable for use by elderly people, infants, and handicapped persons who are difficult to rotate.

That is, the lever handles 82 and 83 are formed into a substantially rectangular plate shape with a synthetic resin or zinc die casting, and prismatic shaft portions 84 and 85 are eccentrically provided on the inner side thereof. Square holes 86 and 87 are formed inside 85.
The lever cam 27 of the second embodiment having a rotation angle of approximately 10 ° is incorporated in the lock 5 embedded in the side end of the door 2, and pin holes are formed on both sides of the square hole 55 of the lever cam 27. 88 is formed.
A guide pin 90 of a handle mounting seat 89 disposed outside the door 2 is inserted into the pin hole 88, and a guide pin 92 of a handle mounting seat 91 disposed inside the door 2 can be inserted into the guide pin 90. .

The handle mounting seats 89 and 91 are configured symmetrically. The handle mounting seat 91 includes a mounting seat body 93 and a mounting seat cover 94. .
The mounting seat body 93 is formed into a horizontally long rectangle with a synthetic resin, and the guide pins 92 and 92 are projected apart from one half of the back surface of the mounting seat body 93, and a concave hole 95 is formed between them. A flange 96 is formed at the opening edge. In the figure, reference numeral 97 denotes a screw hole provided in a corner portion of the back surface.

A longitudinally long guide hole 98 and an arc-shaped concave groove 99 are formed in the other half of the mounting seat body 93, and a steel square core rod 101 connected to the slide plate 100 in the guide hole 98 vertically. The tip end portion of the lever handle 82 is inserted into the square hole 86 so as to be slidable.
The slide plate 100 is formed into a substantially rectangular shape by press-molding a steel plate, a square hole 102 is formed on one side thereof, and a rim portion of the hole 102 is subjected to a burring process.
The base portion of the square core rod 101 is welded or crimped to the burring portion 103, and the slide plate 100 is accommodated on the back surface of the mounting seat main body 93 so as to be movable with the square core rod 101.

In the figure, reference numeral 104 denotes a concave portion formed on the upper and lower sides of one side of the slide plate 100. The concave portion 104 engages with the convex portions 105 formed on both ends of the guide hole 98, and the vertical movement position thereof is restricted. A screw hole 106 is formed in 105.
A through hole 107 is formed on the other side of the slide plate 102, and a convex portion 109 formed at one end of the rotating plate 108 is engaged with the through hole 107.

  One end of the rotating plate 108 is overlapped with the back surface of the slide plate 102, which is formed into a substantially leaf shape by press forming a steel plate, and the convex portion 109 projects from one end thereof. A long hole 110 into which the guide pin 92 can be inserted is formed at an intermediate portion, and a boss 111 is projected from the other end portion.

The flange 96 is disposed inside the boss 111 so as to be engaged, a square hole 112 is formed in the boss 111, and an edge portion of the hole 112 is subjected to burring.
A base portion of a steel square core rod 114 is welded or crimped to the burring portion 113, the base end portion of the square core rod 114 is engaged with the concave hole 95, and the distal end portion is engaged with the square hole 55. In this embodiment, the square core rod 114 can be rotated by about 10 ° through the slide plate 100 by a sliding operation of the lever handles 82 and 83, in the embodiment, a vertical movement operation.

  In the figure, reference numeral 115 denotes a screw hole formed in a corner portion of the other half of the mounting seat body 93. A mounting screw 116 is inserted from the outside of the screw hole 117, and this is inserted into the door through the screw hole 117 of the mounting seat cover 94. The handle mounting seat 91 is attached to the surface of the door 2.

The mounting seat cover 94 is formed of a rectangular steel plate, screw holes 117 and 118 are formed at four corners and an intermediate portion thereof, and a pair of through holes 119 into which guide pins 92 can be inserted and a boss 111 are formed. An insertable boss hole 120 is formed.
In the figure, 121 is a screw to be inserted into the screw hole 118, 122 is a vertically long rectangular stepped portion protruding from the outer opening of each guide hole 98, and a window 123 that can expose the stepped portion 122 from the outside is provided. The formed mounting seat covers-124, 125 are attached.
In this embodiment, the lever cam spring 80 is omitted, and the number of parts is reduced accordingly.

In the third embodiment configured as described above, the inner and outer handle mounting seats 89 and 91 are assembled and placed in advance before being attached to the door 2.
The assembly of the handle mounting seats 89 and 91 is substantially the same, and the handle mounting seat 91 disposed inside the door 2 will be described. First, the slide plate 100 is inserted into the guide hole 98 on one side of the back surface of the mounting seat body 93. And the convex portion 109 of the rotating plate 108 is inserted into the through hole 107 at one end thereof, and one end of the rotating plate 108 is superposed on the back surface of the slide plate 100. This situation is as shown in FIGS.

Then, an inner guide pin 92 is inserted into the elongated hole 110 of the rotating plate 108, the proximal end portion of the square core rod 101 is engaged with the recessed hole 95, and the inner surface of the boss 111 is engaged with the end surface of the flange 96. .
Thereafter, the mounting seat cover 94 is superposed on the back surface of the rotating plate 108, the boss 11 is inserted into the boss hole 120, the guide pin 92 is inserted into the through hole 119, and the screw 121 is inserted from the back side of the cover 94. The screw hole 118 is inserted and screwed into the screw hole 97 for assembly. This situation is as shown in FIG.

  After assembling the handle mounting seats 89 and 91 in this way, the handle mounting seat 89 is disposed outside the door 2, the guide pin 90 is inserted into the pin hole 88, and the square core rod 114 is engaged with one side of the square hole 55. Then, the screw 116 is inserted into the screw hole 115, screwed into the screw hole of the door 2 and tightened, and attached to the outside of the door 2. This situation is as shown in FIG.

  Next, the handle mounting seat 91 is disposed inside the door 2, the guide pin 92 is inserted into the guide pin 90, the square core rod 114 is engaged with the other side of the square hole 55, and the screw 116 is inserted into the screw hole. It is inserted into 115, screwed into the screw hole of the door 2 and tightened, and attached to the inside of the door 2. This situation is as shown in FIG.

  Thereafter, mounting seat covers-124, 125 are mounted from the outside of the handle mounting seats 89, 91, the step portion 122 is exposed from the window 123, and the lever handle 82 is attached to the square core rod 101 protruding from the step portion 122. , 83 are engaged with each other, screws (not shown) are screwed into the side portions of the shaft portions 84, 85, the screw shaft ends are engaged with the square core rod 101, and the lever handle 82, 83 is attached. This situation is as shown in FIGS.

The closed state of the door 2 attached in this way is as shown in FIG. 13, and rectangular lever handles 82 and 83 are attached to one end of the door 2, which is a design compared to a conventional bar-shaped or knob-shaped lever handle. A beautiful aesthetic.
When such a door is closed, the lever handles 82 and 83 are not operated and are placed in a stationary state, and these are positioned at substantially the same height as the mounting seat covers 124 and 125, and the shaft portions 84 and 85 or the square core rod 101 is disposed. The mounting seat covers-124, 125 are located substantially at the center in the vertical direction.

Further, the latch bolt 19 protrudes into the trolley 3 by the latch spring 36, the swing cam 28 is drawn outward, and the lever cam 27 is in the state shown in FIG. 6 (however, the lever cam spring 80 does not exist). The square hole 55 is placed at a rotation angle of 0 °.
Therefore, the slide plate 100 integrated with the square core rod 101 is positioned at the center in the vertical direction of the mounting seat main body 93, and the rotating plate 108 having the convex portion 109 engaged with the through hole 107 is formed on the mounting seat main body 93. Positioned parallel to the center, the square hole 55 or the square core rod 114 at the other end is stationary at a rotation angle of 0 °. This situation is as shown in FIG.

When the door 2 is opened under such circumstances, the lever handles 82 and 83 are put on or placed on the lever handles 82 and 83 and pushed down.
In this manner, the square core rod 101 moves along the lever handles 82 and 83, the square core rod 101 moves downward along the guide hole 98, and the slide plate 100 moves along therewith.
For this reason, the convex portion 109 engaged with the through-hole 107 is moved downward, the convex portion 109 moves along the concave groove 99, and the rotating plate 108 is drawn downward around the square hole 55. I rotate the square core rod 114 in the same direction.

  Thereafter, the lever handles 82 and 83 are further pushed down, the slide plate 100 is further moved down, the rotation plate 108 is further drawn and rotated about 10 ° from the rest position, and the square core rod 114 is moved to the lever. -When the handles 82 and 83 are rotated approximately 10 ° clockwise as viewed from the front, the lower concave portion 104 is engaged with the convex portion 105, and the rotation plate 108 stops rotating. This situation is as shown in FIG.

  Thus, when the square hole 55 or the square core rod 114 is rotated by approximately 10 °, the lever cam 27 is moved in association therewith, and the swing cam 28 is drawn around the lever cam 27, so that the latch bolt 19 is connected to the latch spring 36. It moves into the lock case 6 against the elasticity and retracts from the trolley 3 so that it can be opened.

  As described above, in this embodiment, by sliding the lever handles 82 and 83 up and down or left and right, the square hole 55 or the square core rod 114 is rotated and the door 2 is opened. The lever handle 82, 83 can be rotated and reduced in burden and labor, and is suitable for use by elderly people, infants, and disabled people who are difficult to rotate. A door method can be realized.

  In addition, since the rotation angle θ of the lever cam 27 is set to approximately 10 °, the sliding amount of the lever handles 82 and 83 can be reduced compared to the conventional 45 ° rotation operation, and the door can be moved accordingly. The door opening operation can be performed easily and quickly, and the components can be reduced in size and the handle mounting seats 89 and 91 can be reduced in size and weight.

The door 2 is closed in the same manner as in the above-described embodiment. The latch bolt 19 projects into the trolley 3, the flange 34 moves along with the movement of the shaft portion 32, and the swing cam 28 moves to the pin 60. It is drawn around to the outside.
For this reason, the lever cam 27 is rotated back to the original position around the square hole 55, and the square core rod 114 is moved in association therewith to form the closed state of FIG.

  At that time, the rotating plate 108 is rotated back to the original position around the square core rod 114, the slide plate 100 is pushed up through the through hole 107 engaged with the convex portion 109, and the rotating plate 108 is parallel. At the same time, the rotation is stopped, and at the same time, the slide plate 100 stops moving upward, and the situation shown in FIG. 15 is recovered.

  18 to 24 show a fourth embodiment of the present invention. In this embodiment, as in the above-described embodiment, the vertical movements of the lever handles 82 and 83 are caused to move together with the slide plate 100 so as to rotate the plate. 108, and instead of moving the square core rod 104 along with this, the lever handle 126, 127 is moved up and down to directly move the slide handle cam 128, which is a lever cam, up and down. The rocking cam 28 connected to is rotated, and the latch bolt 19 is moved forward and backward.

  That is, instead of the engagement hole 23 in the lock case 6, a vertically long rectangular guide hole 129 is formed, and a substantially triangular cam hole 130 is formed in the middle portion of the bent piece 28a of the swing cam 28, A sliding handle cam 128 is slidably connected to the cam hole 130 via a pin 59.

  The sliding handle cam 128 is formed by pressing a steel plate into a substantially U-shaped cross section, and one side end portion thereof is inserted between the bent pieces 28a and 28a, and the pin hole 131 formed in the one side end is inserted. A pin 59 is inserted through the cam hole 130 and is connected to the swing cam 28 so as to be swingable.

A rectangular mount portion 132 protrudes from the other end of the handle cam 128, and the mount portion 132 is slidably inserted into the guide hole 129.
A square hole 133 is formed at the center of the mount portion 132, and a square core bar 134 for connecting the lever handles 126 and 127 is inserted into the square hole 133.
The square core bar 134 has a base end portion connected to one lever handle 127, an intermediate portion penetrating the square hole 133 and is engaged with the square hole 135 of the other lever handle 126, and the distal end portion is fixed. is doing.
In this embodiment as well, the lever cam spring 80 is omitted, and the number of parts is reduced accordingly.

  The lever handles 126 and 127 are formed into a substantially triangular prism shape by zinc alloy die casting, and gripping portions 126a and 127a are projected from the upper end portion thereof, and a pair of latching pieces 136 and 137 are projected from the inside thereof. In addition, vertically long handle attachment seats 138 and 139 are attached to the latching pieces 136 and 137 via screws 116.

  When the door lock of this embodiment is assembled, the swing cam 28 and the slide handle cam 128 are assembled to the lock case 6, and the lower mount portion 132 of the handle cam 128 is attached to the lock case 6. The guide hole 129 is slidably engaged, and the other end thereof is inserted into the bent pieces 28a and 28a of the swing cam 28, and the end thereof is rotatably connected to the cam hole 130 via the pin 59. . This situation is as shown in FIG.

  When assembled in this manner, the latch bolt 19 protrudes outward by the latch spring 36, and the swing cam 28 is drawn outward around the pin 60 to lift the sliding handle cam 128 via the pin 59. This situation is as shown in FIG. 23, and the closed state of the door 2 is formed in this situation.

When the door 2 is opened from such a situation, a hand is put on or placed on one of the lever handles 126 and 127 and pushed down.
In this way, the square core bar 134 is moved to the lever handles 126 and 127, the slide handle cam 128 is pushed down through the square hole 133 into which the square core bar 134 is inserted, and the mount 132 is guided by the guide 132. It moves downward along the hole 129.

For this reason, the pin 59 moves downward, and the swing cam 28 is pulled by this, and the cam 28 rotates about the pin 60 in the counterclockwise direction in FIG. To do.
As a result, the latch bolt 19 is pulled against the elasticity of the latch spring 36, pulled into the lock case 6, retracted from the trolley 3, and can be opened. This situation is as shown in FIG.

  As described above, in this embodiment, the slide handle cam 128 is moved in accordance with the pressing operation of the lever handles 126 and 127, and the latch bolt 19 is moved backward without rotating the square hole 133 or the square core bar 134. Therefore, the aforementioned rotating plate 108 is omitted, and the displacement of the lever handles 126 and 127 can be transmitted to the swing cam 28 efficiently and rationally.

  Thereafter, when the door 2 is closed and the latch bolt 19 protrudes into the trolley 3, the flange 34 is pulled outward, and the swing cam 28 rotates about the pin 60 counterclockwise in FIG. 59 is guided by the cam hole 130 and pulled up, and the sliding handle cam 128 moves together to form the closed state of FIG.

  FIGS. 25 to 27 show a fifth embodiment of the present invention, which corresponds to a modification of the fourth embodiment, and instead of pushing down the lever handles 126 and 127 to open the door 2. The lever handles 126 and 127 are pushed up to open the door 2. Therefore, the lever handles 126 and 127 described above are attached at positions opposite to each other up and down so that the gripping portions 126a and 127a protrude downward.

  That is, in this embodiment, the cam hole 140 of the swing cam 28 is formed by rotating approximately 90 ° around the pin 60 from the position of the cam hole 130, and the vicinity of the rear side piece 9c of the lock case 6 The slide handle cam 142 is shared with the mounting portion 132, the square hole 133, and the pin hole 131 of the slide handle cam 128, and the pin hole 143 is formed on the other side. The pin 144 is inserted into the pin hole 143, and the pin 144 is slidably inserted into the long hole 141.

  When the door lock of this embodiment is assembled, the swing cam 28 and the slide handle cam 142 are assembled to the lock case 6, and the lower mount portion 132 of the handle cam 142 is attached to the lock case 6. The guide hole 129 is slidably engaged, the other end thereof is inserted into the bent pieces 28a, 28a of the swing cam 28, and the end thereof is rotatably connected to the cam hole 140 via the pin 59. Further, the pin 144 is inserted into the pin hole 143, and this is inserted into the long hole 141. This situation is as shown in FIG.

  When assembled in this manner, the latch bolt 19 protrudes outward by the latch spring 36, and the swing cam 28 is drawn outward around the pin 60 to push down the slide handle cam 142 via the pin 59. This situation is as shown in FIG. 26. In this situation, the door 2 is closed.

When the door 2 is opened from such a situation, one of the lever handles 126 and 127 is put on and pushed up.
In this way, the lever handles 126 and 127 are moved together via the square core bar 134, and the slide handle cam 142 is pushed down via the square hole 133 into which the square core bar 134 is inserted. Moves upward along the guide hole 129.

For this reason, the pins 59 and 144 move upward, and the swing cam 28 is pulled by this, and the cam 28 rotates about the pin 60 in the counterclockwise direction in FIG. Move together.
As a result, the latch bolt 19 is pulled against the elasticity of the latch spring 36, pulled into the lock case 6, retracted from the trolley 3, and can be opened. This situation is as shown in FIG.

  As described above, in this embodiment, the slide handle cam 128 is moved in accordance with the push-up operation of the lever handles 126 and 127, and the latch bolt 19 is moved backward without rotating the square hole 133 or the square core bar 134. Therefore, the aforementioned rotating plate 108 is omitted, and the displacement of the lever handles 126 and 127 can be transmitted to the swing cam 28 efficiently and rationally.

  Thereafter, when the door 2 is closed and the latch bolt 19 protrudes into the trolley 3, the flange 34 is pulled outward, and the swing cam 28 rotates about the pin 60 in the clockwise direction in FIG. 26 is guided and lifted up by the cam hole 140, and the sliding handle cam 142 moves together with this to form the closed state of FIG.

  FIGS. 28 to 30 show a sixth embodiment of the present invention. In this embodiment, a slide handle cam is moved in accordance with the vertical movement of a lever handle, and a swing cam 28 is interlocked with this to move a latch bolt. Instead of moving the lever 19 backward, the lever handle is moved up and down to rotate the slide handle cam 145, which is a lever cam, and the swing cam 28 is rotated to move the latch bolt 19 backward. I have to.

That is, in this embodiment, the cam hole 146 of the swing cam 28 is formed in a substantially heart shape, and one end of the slide handle cam 145 is rotatably connected to the cam hole 146.
The sliding handle cam 145 has a pivot support hole 147 formed on the other side of the pin hole 131, and a pivot shaft 148 projecting from an intermediate portion of the lock case 6 is inserted into the pivot support hole 147. It is pivotally attached around the center.

  An engaging groove 149 is formed at a position close to the pivot hole 147, and a square core rod 150 having lever handles 126 and 127 connected thereto is inserted into the engaging groove 149 so as to be engageable therewith. The square core rod 150 has a base end connected to one of the lever handles 126 and 127 that can be moved up and down, passes through the engagement hole 23, and has the other end at the other lever handle 126. , 127.

  When the door lock of this embodiment is assembled, the swing cam 28 and the slide handle cam 145 are rotatably assembled to the lock case 6 via the pin 60 and the pivot 148, and they are superposed. Then, a pin 59 is inserted into the cam hole 146 and the pin hole 131 to connect the cams 28 and 145 so as to be swingable.

  On the other hand, the base end portion of the square core rod 150 is connected to one of the lever handles 126, 127, penetrates through the engagement hole 23, and the tip end portion is connected to the other lever handles 126, 127, The square core rod 150 is disposed so as to be engageable with the engagement groove 149. This situation is as shown in FIG.

  When assembled in this manner, the latch bolt 19 protrudes outward by the latch spring 36, the swing cam 28 is drawn outward around the pin 60, and the engagement groove 149 of the slide handle cam 145 is horizontally disposed via the pin 59. And the rectangular core rod 150 is engageable with the engaging groove 149. This situation is as shown in FIG. 29. In this situation, the door 2 is closed.

When the door 2 is opened from such a situation, a hand is put on or put on one of the lever handles 126 and 127 and pushed up.
As a result, the square core rod 150 moves downward together with the lever handles 126 and 127, the square core rod 134 engages with the engagement groove 149, and the slide handle cam 145 is moved around the pivot 148. It is rotated clockwise in FIG.
In this embodiment, the slide handle cam 145 is rotated by approximately 10 ° by the push-down operation of the lever handles 126 and 127.

For this reason, the swing cam 28 rotates about the pin 60 in the counterclockwise direction in FIG. 29 via the pin 59 and the cam hole 146, and the flange 34 is pulled by the swing cam 28.
As a result, the latch bolt 19 is pulled against the elasticity of the latch spring 36, pulled into the lock case 6, retracted from the trolley 3, and can be opened. This situation is as shown in FIG. 31, where e is the downward displacement of the square core bar 134. FIG.

  As described above, in this embodiment, the lever handle 126, 127 is pushed down to rotate the slide handle cam 128 by approximately 10 ° to retract the latch bolt 19, thereby realizing the early opening of the door 2. Yes.

  After that, when the door 2 is closed and the latch bolt 19 protrudes into the trolley 3, the flange 34 is pulled outward, and the swing cam 28 rotates about the pin 60 in the clockwise direction in FIG. 59 is guided and pulled by the cam hole 146, and the sliding handle cam 145 moves in conjunction therewith to pull up the square core rod 150, thereby forming the closed state of FIG.

  FIGS. 31 to 37 show a seventh embodiment of the present invention. In this embodiment, instead of pushing down the lever handles 126 and 127 to retract the latch bolt 19 and opening the door 2, the lever The handles 126 and 127 are pushed down, the sliding handle cam 142 is pushed up, the latch bolt 19 is moved backward, and the door 2 is opened.

That is, in this embodiment, the above-described lock 5 having the slide handle cam 142 that can be pushed up is used, and recesses 151 and 152 are formed at both ends on the base side of the lever handles 126 and 127. 152 is inserted between each of the pair of projecting pieces 153 and 154 protruding outside the handle mounting seats 138 and 139.
Pin holes 155 to 158 are formed in the concave portions 151 and 152 and the projecting pieces 153 and 154, and pins 159 and 160 are inserted into these, and the lever handles 126 and 127 are moved up and down around the pins 159 and 160. It is connected so that it can rotate.

Then, lever insertion grooves 161 and 162 are formed at the proximal ends of the lever handles 126 and 127, and the bases of the handle levers 163 and 164 are inserted into the insertion grooves 161 and 162, and the pins formed on the bases The pins 159 and 160 are inserted into the holes 165 and 166, respectively.
The handle levers 163 and 164 are formed by punching a steel plate into a substantially spatula shape, and concave portions 167 and 168 are formed at the upper end of the intermediate portion. The slide handle can be moved up and down from the concave portions 167 and 168. Inserted adjacent to the square hole 133 of the cam 128 or 145

  Concave holes 169 and 170 are formed in the front end of the base side of the lever handles 126 and 127, and concave holes 171 and 172 are formed in the lower peripheral surfaces of the handle mounting seats 138 and 139, and springs 173 and 173 are formed in these holes. 174 is inserted, and the lever handles 126 and 127 are urged so as to be rotatable upward through the elasticity of the springs 173 and 174.

  When the door lock of this embodiment is assembled, the above-described lock 5 having the lever handles 126 and 127 that can be pushed down and the sliding handle cam 142 that can be pushed up is used, and the lock 5 that is operated is used. The seats 138 and 139 are attached to the lock 5 in the same manner as in the prior art.

Next, when the lever handles 126 and 127 are attached to the door 2, the lever handles 126 and 127 are assembled to the handle attachment seats 138 and 139.
In that case, the bases of the handle levers 163 and 164 are inserted into the lever insertion grooves 161 and 162 of the handle levers 163 and 164 with the recesses 167 and 168 facing upward, and the inserted state is maintained. Insert the tips of −163 and 164 into the guide holes 98 and 98 of the handle mounting seats 138 and 139.

  The tip ends of the lever handles 126 and 127 are positioned between the protrusions 153 and 154 of the handle mounting seats 138 and 139, and the concave holes 169 to 172 of the handle levers 163 and 164 and the handle mounting seats 138 and 139 are positioned. The springs 173 and 174 are inserted into.

  Thereafter, the pins 159 and 160 are inserted into the pin holes 157 and 158 from the outside of the projecting pieces 153 and 154, and penetrated into the pin holes 165 and 166 of the handle levers 163 and 164, so that the lever handle 126, The leading end of 127 is connected to the protruding pieces 153 and 154. This situation is as shown in FIGS.

Thus, after assembling the lever handles 126 and 127 to the handle mounting seats 138 and 139, one handle mounting seat 138 is disposed outside the door 2, and the guide pin 90 is inserted into the pin hole 88, and the handle lever 163 is inserted into one side of the square hole 133.
Then, the screw 116 is inserted into the screw hole 115, screwed into the screw hole of the door 2 and tightened, and attached to the outside of the door 2. This situation is as shown in FIG.

Next, the other handle mounting seat 139 is disposed inside the door 2, its guide pin 92 is inserted into the guide pin 90, its handle lever 164 is inserted into the other side of the square hole 133, and the handle lever It is arranged adjacent to 163. This situation is as shown in FIG.
Then, the screw 116 is inserted into the screw hole 115, screwed into the screw hole of the door 2 and tightened, and attached to the inside of the door 2. This situation is as shown in FIG.

  The closed state of the door 2 attached in this way is as shown in FIGS. 34 and 35, and rectangular lever handles 126 and 127 are attached to one end of the door 2. When such a door is closed, the lever handles 126 and 127 are operated. These are placed in a stationary state and are biased so as to be pivotable outward or upward via springs 173 and 174. This situation is as shown in FIG.

When the door 2 is opened from such a closed state, a hand is put on or put down on one of the gripping portions 126a and 127a of the lever handles 126 and 127.
In this way, one of the lever handles 126 and 127 is pushed downward with the pins 159 and 160 as fulcrums against the elasticity of the springs 173 and 174, and the handle levers 163 and 164 move together therewith. The tip ends of the levers 163 and 164 are displaced upward and engage with the inner surface of the square hole 133 of the sliding handle cam 142.

  For this reason, the sliding handle cam 142 is pushed up, the mounting portion 132 moves upward along the guide hole 129, the pins 59 and 144 move upward, the swing cam 28 is pushed, and the swing cam is moved. 28 rotates about the pin 60 in the counterclockwise direction in FIG.

As a result, the latch bolt 19 is pulled against the elasticity of the latch spring 36, moves into the lock case 6 and retracts from the trolley 3 so that the door can be opened.
This situation is as shown in FIG. In this case, even if the other lever handles 126 and 127 are pushed down, the same effect is obtained.

  As described above, in this embodiment, the levers 163 and 164 are pushed up by the levers supporting the pins 159 and 160, and the slide handle cam 142 is moved along with the levers. Therefore, the lever handles 126 and 127 are pushed up. Therefore, the upper displacement or push-up force of the lever handles 126 and 127 can be reduced as compared with the case where the handle cam 142 for sliding is directly pushed up, which is suitable for use by elderly people, infants, and handicapped people with weak arm strength. .

  After that, when the door 2 is closed and the latch bolt 19 protrudes into the trolley 3, the flange 34 is pulled outward, and the swing cam 28 rotates about the pin 60 in the clockwise direction in FIG. 26 is guided and pulled by the cam hole 140, and the sliding handle cam 142 is lifted by moving together with this, forming the closed state of FIG.

  As described above, the door lock according to the present invention can easily and quickly open and close the door, and promote the switching of the lever handle from the conventional rotational operation to the sliding operation up and down or left and right. In addition to realizing simple operation and reducing the size and weight, it is suitable for use by elderly people, infants, and handicapped people with weak arm strength.

It is sectional drawing which shows the locking state of the door lock of this invention. It is a perspective view which decomposes | disassembles and shows the principal part of the door lock of this invention. It is a perspective view which decomposes | disassembles and shows the principal part of the latch bolt applied to the door lock of this invention, and a rocking cam. It is a perspective view which decomposes | disassembles and shows the lever cam applied to the door lock of this invention. It is sectional drawing which shows the unlocking state of the door lock of this invention, and the lever cam is rotated about 30 degrees and is unlocked.

It is sectional drawing which shows the locking state of the door lock of the 2nd Embodiment of this invention. It is a perspective view which decomposes | disassembles and shows the rocking cam and lever cam which were applied to the said 2nd Embodiment. It is a perspective view which decomposes | disassembles and shows the lever cam applied to the said 2nd Embodiment. It is sectional drawing which shows the unlocking state of the door lock of the said 2nd Embodiment, and the lever cam is rotated about 10 degrees and unlocked.

It is a perspective view which decomposes | disassembles and shows the principal part of the door lock of the 3rd Embodiment of this invention. It is a perspective view which decomposes | disassembles and shows the handle | steering-wheel mounting seat applied to the door lock of the said 3rd Embodiment. It is a perspective view which shows the assembly | attachment condition inside the handle | steering-wheel mounting seat applied to the door lock of the said 3rd Embodiment, (a) opens the cover and shows the assembly | attachment condition of a slide board, (b) shows a cover. FIG. 4C shows the assembled state of the rotating plate when opened, and FIG. 5C shows the rear surface state of the handle mounting seat after the cover is attached.

It is a front view which shows the condition after attaching to the door of the lever handle which can be slid downward and applied to the door lock of the said 3rd Embodiment. It is sectional drawing which shows the condition which attached the door lock of the said 3rd Embodiment to the door. The front view which shows the operating condition inside the handle | steering-wheel mounting seat applied to the door lock of the said 3rd Embodiment with a cover opened, and shows the locked state after attachment. The unlocking state is shown in the front view which shows the operating condition inside the handle attachment seat applied to the door lock of the said 3rd embodiment with a cover opened. It is an expanded sectional view of the handle | steering-wheel mounting seat along the AA line of FIG.

It is a perspective view which decomposes | disassembles and shows the principal part of the door lock of the 4th Embodiment of this invention. It is a side view which shows the attachment condition of the lever handle which can be slid to the downward direction applied to the said 4th Embodiment. It is a front view which shows the attachment condition of the lever handle applied to the said 4th Embodiment. It is a front view which shows the lock | rock case applied to the said 4th Embodiment. It is a front view which shows the assembly | attachment condition of the rocking cam applied to the said 4th Embodiment.

(A) is a front view which shows the assembly | attachment condition of the rocking cam applied to the said 4th Embodiment, and the slide handle cam, and has shown the locking state. (B) is sectional drawing which shows the handle cam cam for slides. The unlocking state of the swing cam and slide handle cam applied to the fourth embodiment is shown.

It is a front view which shows the assembly | attachment condition of the rocking cam applied to the 5th Embodiment of this invention. (A) is a front view which shows the assembly | attachment condition of the rocking cam applied to the said 5th Embodiment, and the slide handle cam, and has shown the locking state. (B) is sectional drawing which shows the handle cam cam for slides. The unlocking state of the swing cam and slide handle cam applied to the fifth embodiment is shown.

It is a front view which shows the assembly | attachment condition of the rocking cam applied to the 6th Embodiment of this invention. It is the front view which shows the assembly | attachment condition of the rocking cam applied to the said 6th Embodiment, and the handle cam for a slide, The locked state is shown. The unlocking state of the swing cam and slide handle cam applied to the sixth embodiment is shown.

It is a perspective view which decomposes | disassembles and shows the principal part of the door lock of the 7th Embodiment of this invention. It is a perspective view which decomposes | disassembles and shows the principal part of the door lock of the said 7th Embodiment. It is a top view which shows the attachment condition of the lever handle which can be rotated downward applied to the said 7th Embodiment. It is sectional drawing which shows the attachment condition of the lever handle which can be rotated downward applied to the said 7th Embodiment.

It is a front view which shows the attachment condition of the lever handle which can be rotated downward applied to the said 7th Embodiment. It is sectional drawing which shows the attachment condition of the lever handle which can be rotated downward applied to the said 7th Embodiment, and a handle attachment seat. It is a front view which decomposes | disassembles and shows the attachment condition of the lever handle | steering-wheel which can be rotated downward applied to the said 7th Embodiment, and a handle attachment seat.

Explanation of symbols

6 Lock case 19 Latch bolt 27 Lever cam 28 Swing cam 55 Square hole 61, 62 Cam hole 89, 91 Handle mounting seat

100 slide plate 101 slide axis (square core rod)
108 Rotating plate 126 Lever handle 127 Lever handle 128 Lever cam (sliding handle cam)

133 Square hole 138 Handle mounting seat 139 Handle mounting seat 142 Lever cam (sliding handle cam)
145 Lever cam (sliding handle cam)
163 Handle lever
164 Handle lever
θ Lever cam rotation angle

Claims (14)

  In a door lock provided with a latch bolt provided to the lock case so as to be able to advance and retract, and a lever cam linked to one end of the latch bolt in advance and retreat, and the other end linked to the operation of the lever handle, A swing cam that can be linked to the forward and backward movement of the latch bolt is rotatably provided, and the lever cam is connected to a cam hole provided in the swing cam so as to swing or move vertically or horizontally. Features door lock.   2. The door lock according to claim 1, wherein a plurality of cam holes are provided in a rotational radius direction of the swing cam, and a connecting position between the swing cam and the lever cam can be selected through the cam hole.   3. The door lock according to claim 2, wherein the lever cam is rotatably connected to a cam hole in an outward direction of the rotation radius of the swing cam to suppress the rotation angle of the lever cam with respect to the backward movement of the latch bolt. .   The door lock according to claim 1, wherein the pivoting position of the swing cam and the lever cam and the connecting position thereof are arranged in a straight line when the latch bolt protrudes.   4. The door lock according to claim 3, wherein a rotating plate capable of moving together with the lever cam is provided, a slide plate is linked to one side of the rotating plate, and the slide plate is linked to the operation of the lever handle.   The door lock according to claim 5, wherein a slide shaft capable of connecting a lever handle to the slide plate is projected.   The door lock according to claim 5 or 6, wherein the slide plate is linked to a vertical movement or a horizontal movement or rotation of a lever handle.   6. The door lock according to claim 5, wherein the rotating plate and the slide plate are provided on a handle mounting seat that is mounted on a mounting base side of the lever handle.   The door lock according to claim 6 or 8, wherein the slide shaft is slidably provided on the handle mounting seat, and an end of the shaft projects from the handle mounting seat.   2. The door lock according to claim 1, wherein the lever cam is provided so as to be movable up and down or pivoted in association with a downward or upward movement of the lever handle.   The door lock according to claim 1 or 10, wherein the latch bolt can be moved forward and backward in association with a downward or upward movement of the lever handle.   11. The door lock according to claim 10, wherein a handle lever protrudes from a base of a lever handle that can be moved downward or upward, and the handle lever is linked to the lever cam that can move up and down.   The door lock according to claim 12, wherein the lever handle is connected to the surface of the door or the handle mounting seat so as to be rotatable in the vertical direction.   The door lock according to claim 12 or 13, wherein each handle lever of a lever handle arranged inside and outside the door is inserted into a square hole of the lever cam so as to be engageable.

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