JP5524732B2 - Lever handle lock - Google Patents

Description

  The present invention relates to a lever handle lock that operates a switch provided on a round seat to stop the rotation of the handle.

  For example, in an ordinary house, a door that requires simple locking, such as an indoor toilet or a dressing room, may be provided with a locking means together with a latch lock. For example, in the lever handle lock disclosed in Patent Document 1, the base end of one lever handle of a pair of lever handles protrudes into the opening of a lever handle rotation restricting plate supported on the inner side surface of the corresponding seat. The lever handle rotation restricting plate is moved by the cam operation interlocking with the lock lever, and the protrusion formed inside one end of the opening enters the step formed on the outer peripheral surface of the base end. By doing so, the lever handle is locked to be locked. As a result, the lever handle can be locked by operating the lock lever, and the lever handle can be locked, the lever handle seat is compact, the locking structure is strong, there are few failures, and the manufacturing cost is kept low. Yes.

JP-A-8-232513

  However, since the above-described conventional lever handle lock is provided with a lock lever for performing the locking / unlocking operation on the front surface of the seat, there is a concern that a hand may accidentally touch when the lever handle is operated. . Further, since the conventional example is in the form of a lock lever, the operation requires a picking operation with fingers, which is disadvantageous in the ease of operation. Moreover, since it is arranged together with the lever handle, depending on the viewing angle, it may overlap with the lever handle and be difficult to see.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a lever handle lock which can realize a good operation by reducing malfunctions and erroneous operations and has a good switch visibility.

Next, means for solving the above problems will be described with reference to the drawings corresponding to the embodiments.
The lever handle lock according to claim 1 of the present invention includes an inner seat 15 and an outer seat 17 that support the lever shaft 13 penetrating the door 11 on the front and back of the door,
A C-shaped inclined surface 21 located on the inner periphery 19 of the inner seat 15 and provided on the outer periphery of the lever shaft 13;
A C-shape that is slidable in a direction perpendicular to the lever shaft 13 inside the inner seat 15 and engages with the C-shaped inclined surface 21 at one slide end position to prevent the lever shaft 13 from rotating. A slide cam 27 provided with a shape regulating wall 25;
An inclined tongue piece 31 protruding from the slide side end 29 in the one sliding direction of the slide cam 27 and inclined in a direction away from the outer seat 17;
The outer seat 17 is slidably supported in the direction along the lever shaft 13 so that the head 33 can move forward and backward from the surface 35 of the outer seat 17 and the tip 37 can press the inclined tongue piece 31. An access pin 39 and
A pin urging spring 41 for urging the access pin 39 in the direction of the pressing;
On the outer periphery of the inner seat 15, the swing cam 43 is disposed so as to be swingable about the swing shaft 43 in the direction along the lever shaft 13. And a swing switch 45 for engaging the access pin 39 from the surface 35 of the outer seat 17 via the inclined tongue piece 31.
It is characterized by comprising.

In this lever handle lock, when the swing switch 45 located on the outer periphery of the inner seat 15 is swung down in the locking direction, the slide cam 27 in the interior 19 is pushed down, and the C-shaped regulating wall 25 of the slide cam 27 is pushed down. Engages with the C-shaped inclined surface 21 to prevent the lever shaft 13 from rotating. At the same time, the inclined tongue piece 31 of the slide cam 27 presses the distal end portion 37 of the access pin 39. The pressed access pin 39 of the distal end portion 37 slides against the urging force of the pin urging spring 41, and the head 33 protrudes from the surface 35 of the outer seat 17 to indicate that it is locked.
On the other hand, at the time of normal unlocking, when the swing switch 45 is swung down in the unlocking direction, the slide cam 27 is raised by the swing switch 45, and the H-shaped regulating wall 25 is moved from the H-shaped inclined surface 21. The access pin 39 is released with the head 33 being flush with the surface 35 of the outer seat 17, while releasing the restriction of the lever shaft 13 and releasing the pressing of the tip portion 37 by the inclined tongue piece 31. It displays that it is locked.
At the time of emergency unlocking, the head 33 of the access pin 39 protruding from the surface 35 is pushed. In the access pin 39 into which the head 33 has been pushed, the tip 37 presses the inclined tongue piece 31 and raises the slide cam 27. As a result, the C-shaped regulating wall 25 of the slide cam 27 is separated from the C-shaped inclined surface 21, the regulation of the lever shaft 13 is released, and the unlocked state is established. At the same time, the swing switch 45 is swung to the unlocking side.
The swing switch 45 disposed on the outer periphery of the inner seat 15 does not operate due to an accidental hand contact when the lever handle is operated. Since the non-pressing side of the swing switch 45 protrudes from the outer periphery of the inner seat 15, it is easy to visually grasp the switch state when viewed from the front.

The lever handle lock according to claim 2 is the lever handle lock 47 according to claim 1,
The inclined tongue piece 31 has a gap 49 in the direction along the inclined tongue piece 31 and is fixed to the slide cam 27 and presses the distal end portion 37 of the access pin 39 so that the head portion 33 of the access pin 39 is moved. A leaf spring 51 disposed on the same surface as the surface 35 of the outer seat 17;
It is characterized by comprising.

In this lever handle lock, the distal end portion 37 of the access pin 39 is pressed against the urging force of the pin urging spring 41 against the leaf spring 51 arranged with the gap 49 in the inclined tongue 31 when unlocked. Thus, the head 33 of the access pin 39 is flush with the surface 35 of the outer seat 17.
When the slide cam 27 is pressed by the locking operation of the swing switch 45, the leaf spring 51 is lowered integrally with the slide cam 27 and presses the distal end portion 37 of the access pin 39. As a result, the access pin 39 33 advances from the surface 35. At this time, the gap 49 is reduced, but the leaf spring 51 and the inclined tongue 31 are still separated from each other.
On the other hand, at the time of emergency unlocking, the head 33 of the access pin 39 protruding from the surface 35 is pushed. In the access pin 39 into which the head portion 33 is pushed, the tip end portion 37 presses the leaf spring 51, and the pressed leaf spring 51 presses the inclined tongue piece 31 after being in close contact with the inclined tongue piece 31. That is, the access pin 39 directly pushes up the slide cam 27. After the slide cam 27 is pushed up and unlocked, the leaf spring 51 is elastically restored again, the access pin 39 is pushed back by the distance 49 from the inclined tongue 31 to the tip portion 37, and the head 33 is moved to the surface. 35 and the same level.

  According to the lever handle lock of the first aspect of the present invention, the rotation switch of the seat is operated to stop the rotation of the handle without disposing the locking / unlocking operation switch on the seat surface. Therefore, it is possible to reduce the number of malfunctions and erroneous operations and realize a good and reliable operation. Moreover, since the operation part protrudes from the outer periphery of the seat, the visibility from the front is improved, and the switch state can be easily understood.

  According to the lever handle lock of claim 2, the head can be protruded or flush with the surface by utilizing the elastic force of the leaf spring, and the leaf spring is parallel to the inclined tongue when the access pin is pushed. The slide cam can be pushed up by being elastically deformed, and the return after the push-in can be realized.

It is the external appearance perspective view which showed the inner seat side of the lever handle lock concerning this invention in (a), and the outer seat side was shown in (b). It is a disassembled perspective view of the lever handle lock shown in FIG. (A) is a disassembled front view of an inner seat, (b) is an exploded vertical cross-sectional view at the center of the lever handle lock shown in FIG. (A) The left is a longitudinal sectional view of the surface including the axis of the lever shaft at the time of locking, the right is an internal front view of the inner seat by the surface orthogonal to the axis, (b) The left is the lever shaft at the start of the unlocking operation The longitudinal sectional view of the plane including the axis and the right are internal front views of the inner seat by the plane orthogonal to the axis. (A) The left is a longitudinal sectional view of the surface including the axis of the lever shaft in the middle of unlocking, the right is an internal front view of the inner seat with the surface orthogonal to the axis, (b) The left is the axis of the lever shaft during unlocking The right sectional view and the right side are internal front views of the inner seat by the plane orthogonal to the axis. (A) The left is a longitudinal sectional view of the surface including the axis of the lever shaft at the time of locking, the right is an internal front view of the inner seat by the surface orthogonal to the axis, (b) The left is the lever shaft at the time of emergency unlocking start The longitudinal sectional view of the plane including the axis and the right are internal front views of the inner seat by the plane orthogonal to the axis. (A) Left is a longitudinal sectional view of the plane including the axis of the lever shaft in the middle of emergency unlocking, and right is an internal front view of the inner seat with a plane orthogonal to the axis, (b) The lever is the lever after emergency unlocking is completed. The longitudinal cross-sectional view by the surface containing the axis line of an axis | shaft and the right are the internal front views of the inner seat by the surface orthogonal to the axis line.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an external perspective view showing the inner seat side of the lever handle lock according to the present invention in (a) and the outer seat side in (b).
A lever shaft 13 passes through the opening / closing tip of the door 11, and the lever shaft 13 is supported by a cylindrical inner seat 15 and an outer seat 17 on the front and back of the door. The door 11 is provided with a lock box 55 for moving the latch bolt 53 forward and backward, and the lock box 55 can be moved backward by the rotational operation force of the lever shaft 13 that passes therethrough. A lever handle 57 as a handle is provided at each end of the lever shaft 13, but the handle may be a flat spherical grip ball or the like. A swing switch 45 described later is disposed on the outer periphery of the inner seat 15, and a head 33 of an access pin described later is disposed on the surface 35 of the outer seat 17.

2 is an exploded perspective view of the lever handle lock shown in FIG. 1, FIG. 3 (a) is an exploded front view of the inner seat, and FIG. 2 (b) is an exploded vertical sectional view of the central portion of the lever handle lock shown in FIG. is there.
In the inner part 19 of the inner seat 15, an external fitting cylinder 23 having a square hole 59 is externally inserted into the lever shaft 13 so as not to rotate relative to the lever shaft 13. The outer fitting cylinder 23 is formed with a C-shaped inclined surface 21 in which both shape portions shown in FIG. 3 are cut out in a C shape on the outer periphery between the square hole forming portion 61 and the pedestal portion 63.

  In addition, a substantially U-shaped slide cam 27 that is slidable in a direction orthogonal to the lever shaft 13 is accommodated in the interior 19 of the inner seat 15. The slide cam 27 has a H-shaped regulating wall 25 as a stopper portion shown in FIG. 3 that engages with the H-shaped inclined surface 21 of the lever shaft 13 at one slide end position to prevent the lever shaft 13 from rotating. Have. In addition, an engagement rectangular hole 67 is formed in one of the upper end portions 65 facing the slide cam 27. Further, a pair of spring fixing portions 69 are formed in the lower front portion of the slide cam 27.

  An inclined tongue piece 31 projects from a slide side end 29 in one sliding direction of the slide cam 27. The inclined tongue piece 31 is inclined in a direction away from the outer seat 17 as shown in FIG. On the inner surface of the inner seat 15, a recessed portion 71 that accommodates the inclined tongue piece 31 is formed.

  On the other hand, a support cylinder 73 projects from the outer seat 17, and the support cylinder 73 supports the access pin 39 slidably in the direction along the lever shaft 13. The access pin 39 allows the head 33 to advance and retract from the surface 35 of the outer seat 17. Moreover, the front-end | tip part 37 enables the inclination tongue piece 31 to be pressed. The access pin 39 is urged in a direction in which the inclined tongue piece 31 is pressed by a pin urging spring 41 disposed in the support cylinder 73.

  In the present embodiment, the distal end portion 37 of the access pin 39 presses the inclined tongue piece 31 via the slide bush 75. The slide bush 75 is slidably guided by a guide groove 77 formed in the inner seat 15. The slide bush 75 includes a vertical surface 79 with which the distal end portion 37 abuts and an inclined surface 81 that presses the inclined tongue piece 31. The pin urging spring 41 holds the slide bush 75 at a predetermined position in the slide direction.

  Further, a substantially T-shaped leaf spring 51 shown in FIG. 3 is fixed to the slide cam 27 by the spring fixing portion 69 described above. The leaf spring 51 is fixed to the slide cam 27 with a gap 49 (see FIG. 4) in the inclined tongue piece 31 in a direction along the inclined tongue piece 31. The leaf spring 51 presses the distal end portion 37 of the access pin 39 and urges the head portion 33 of the access pin 39 to be flush with the surface 35 of the outer seat 17. Here, the inclined surface 81 of the slide bush 75 and the inclined tongue piece 31 of the slide cam 27 are formed at substantially the same inclination angle, for example, about 50 ° from the vertical plane orthogonal to the lever shaft 13, and the leaf spring The inclination angle 51 is about 35 °, which is an angle shallower than the inclination angle of the inclined surface 81 and the inclined tongue piece 31, and the gap 49 is formed by this angle difference.

  A switch placement window 83 is formed at the upper part of the outer periphery of the inner seat 15. The switch placement window 83 is provided with a swing switch 45 that can swing about a swing shaft 43 in the direction along the lever shaft 13. The swing switch 45 is connected to the engagement rectangular hole 67 via the pin 84. The swing switch 45 presses the slide cam 27 and engages the H-shaped regulating wall 25 with the H-shaped inclined surface 21 by pressing and swinging on one side. At the same time, the head 33 of the access pin 39 is advanced from the surface 35 of the outer seat 17 through the inclined tongue piece 31 and the slide bush 75.

  The swing switch 45 is provided with a substantially mountain-shaped click spring 85 that penetrates the swing shaft 43 and swings integrally. A protrusion 87 is suspended from the lower surface of the click spring 85, and the protrusion 87 engages with a click protrusion 89 provided on the inner seat 15. That is, the click spring 85 biases the rocking to either the left or right by moving over the protrusion 87 on either the left or right of the click 87 by elastic deformation. The click spring 85 is prevented from being separated from the swing switch 45 by a spacer 91 that is externally attached to the swing shaft 43.

  The inner seat 15 is covered with a holding plate 93 at the inner portion 19. The presser plate 93 has a fixing hole 95 for fixing to the inner seat 15 with a screw or the like, a through hole 97 of the lever shaft 13, an exposed window 99 of the leaf spring 51, an insertion hole 101 of the access pin 39, and a fixing stud 103. The insertion hole 105 is formed.

  The lever handle lock 47 is configured such that the inner seat 15 provided with the above-described members is covered with a holding plate 93 and is disposed on one surface side of the door 11, and the outer seat 17 is disposed on the other surface side of the door 11. Is placed. The inner seat 15 and the outer seat 17 arranged with the door 11 in between are fixed by screwing a fixing stud 103 protruding from the outer seat 17 to a fixing column 109 of the inner seat 15 with a screw penetrating from the inner seat 15. By doing so, the door 11 is fixed in a sandwiched state. In FIG. 3, reference numeral 111 denotes a color for preventing rattling.

  In the lever handle lock 47, the inner seat 15 side and the outer seat 17 side are separate units, and the lever shaft 13 penetrates the lever handle lock 47 so that they are connected to each other. The access pin 39 has a structure for pressing the slide bush 75 and has a separation structure. As a result, the slide cam 27 is slid from the inner seat 15 by the swing of the swing switch 45, and the rotation of the lever shaft 13 is restricted and released. From the outer seat 17, the head 33 of the access pin 39 is By pushing, the slide cam 27 is slid through the slide bush 75, and the rotation restriction of the lever shaft 13 is released.

  As described above, the lever handle lock 47 has a separation structure, so that when the thickness of the door 11 is changed, it is possible to cope with it only by changing the length of the access pin 39. The lever shaft 13 can be adapted to the thickness of the door 11 by changing the connecting position with the lever handle 57.

Next, the operation of the lever handle lock 47 having the above configuration will be described.
Fig. 4 (a) is a vertical sectional view of the left side including the axis of the lever shaft when locked, and right is an internal front view of the inner seat with a plane perpendicular to the axis, and Fig. 4 (b) is a lever when starting the unlocking operation. The longitudinal cross-sectional view by the surface containing the axis line of an axis | shaft and the right are the internal front views of the inner seat by the surface orthogonal to the axis line.
As shown in FIG. 4 (a), when the swing switch 45 located on the outer periphery of the inner seat 15 is brought into the swing-down state in the locking direction, the slide cam 27 in the interior 19 is pushed down, and the slide The C-shaped regulating wall 25 of the cam 27 engages with the C-shaped inclined surface 21 of the outer fitting cylinder 23, and the lever shaft 13 is prevented from rotating. At the same time, the inclined tongue piece 31 of the slide cam 27 presses the distal end portion 37 of the access pin 39 via the slide bush 75. The pressed access pin 39 of the distal end portion 37 slides against the urging force of the pin urging spring 41, and the head 33 protrudes from the surface 35 of the outer seat 17 to indicate that it is locked. The slide bush 75 is in a contact position with the presser plate 93.

  At this time, when the slide cam 27 is pushed down by the locking operation of the swing switch 45, the leaf spring 51 is lowered integrally with the slide cam 27 and presses the distal end portion 37 of the access pin 39. The head 33 advances from the surface 35. As a result, the gap 49 is reduced, but the leaf spring 51 and the inclined tongue 31 are still separated.

FIG. 5 (a) is a vertical cross-sectional view of the surface including the axis of the lever shaft in the middle of unlocking, the right is an internal front view of the inner seat with a surface orthogonal to the axis, and (b) the left is the lever shaft during unlocking. The vertical cross-sectional view of the plane including the axis and the right side are internal front views of the inner seat with the plane orthogonal to the axis.
On the other hand, at the time of normal unlocking, when the swing switch 45 is swung down in the unlocking direction as shown in FIG. 4B, the slide is moved by the swing switch 45 as shown in FIG. The cam 27 rises. The slide bush 75 is separated from the presser plate 93 by about 1 mm. Finally, as shown in FIG. 5B, the C-shaped regulating wall 25 is separated from the C-shaped inclined surface 21 and the regulation of the lever shaft 13 is released. The access pin 39 is retracted by the urging force of the pin urging spring 41. At the same time, the access pin 39 from which the pressing of the distal end portion 37 by the inclined tongue piece 31 is released indicates that the head 33 is flush with the surface 35 of the outer seat 17 and is unlocked. The slide bush 75 is separated from the presser plate 93 by about 2 mm.

  Thus, at the time of unlocking, the access pin 39 is pressed against the leaf spring 51 by the biasing force of the pin biasing spring 41, and the head 33 of the access pin 39 is flush with the surface 35 of the outer seat 17.

Fig. 6 (a) is a vertical sectional view of the left side including the axis of the lever shaft at the time of locking, and Fig. 6B is an inner front view of the inner seat with a surface perpendicular to the axis, and Fig. 6 (b) is a lever at the time of starting emergency unlocking. The longitudinal cross-sectional view by the surface containing the axis line of an axis | shaft and the right are the internal front views of the inner seat by the surface orthogonal to the axis line.
On the other hand, at the time of emergency unlocking, in the locked state shown in FIG. 6A, as shown in FIG. 6B, the head 33 of the access pin 39 protruding from the surface 35 of the outer seat 17 is pressed. . In the access pin 39 whose head 33 has been pressed, the distal end portion 37 presses the leaf spring 51, and the pressed leaf spring 51 presses the inclined tongue piece 31 after closely contacting the inclined tongue piece 31. That is, the access pin 39 starts to push up the slide cam 27 directly. In this pressed state, the head 33 of the access pin 39 is flush with the surface 35 of the outer seat 17. In this state, the projection 87 of the click spring 85 has not yet passed over the click projection 89. In other words, if the head 33 is pressed and the operation is performed up to a state where it is flush with the surface 35, the swing switch 45 returns to the locked state.

Fig. 7 (a) is a vertical cross-sectional view of the surface including the axis of the lever shaft in the middle of emergency unlocking, and right is an internal front view of the inner seat with a surface orthogonal to the axis, and (b) is after the end of emergency unlocking. The longitudinal cross-sectional view by the surface containing the axis line of this lever axis | shaft and the right are the internal front views of the inner seat by the surface orthogonal to the axis line.
When the head 33 of the access pin 39 is pushed further than the surface 35 of the outer seat 17, the tip 37 of the access pin 39 presses the inclined tongue piece 31 as shown in FIG. 27 is raised. At this time, the slide bush 75 is separated from the presser plate 93 by about 3 mm.

  As a result, as shown in FIG. 7B, the C-shaped regulating wall 25 of the slide cam 27 is separated from the C-shaped inclined surface 21, the regulation of the lever shaft 13 is released, and the unlocked state is established. At the same time, the rocking switch 45 is rocked and held on the unlocking side with the protrusion 87 of the click spring 85 getting over the click projection 89. Since the swing switch 45 arranged on the outer periphery of the inner seat 15 does not protrude toward the lever handle 57 side, it does not operate when the lever handle 57 is accidentally touched by a hand. Further, since the swing switch 45 has a substantially half portion on the non-pressing side protruding from the outer periphery of the inner seat 15, it is easy to visually grasp the switch state when viewed from the front.

  After the slide cam 27 is pushed up and unlocked, the leaf spring 51 is elastically restored again, and the access pin 39 that has been pushed in has its distal end 37 spaced from the inclined tongue 31 through the slide bush 75 to the gap 49. And the head 33 is disposed at a position flush with the surface 35.

  Therefore, according to the lever handle lock 47 according to the present embodiment, the swing switch is arranged on the outer periphery of the inner seat without arranging the locking / unlocking operation switch so as to protrude on the surface of the seat, and is provided on this outer periphery. Since the swing switch 45 can be operated to stop the rotating operation of the handle, it is possible to reduce the number of erroneous operations and malfunctions and realize a good and reliable operation. Moreover, since the operation part protrudes on the outer periphery of the seat, visibility from the front is improved, and the switch state, that is, the state of locking / unlocking can be easily understood.

  In the lever handle lock 47 according to the present embodiment, the slide bush 75 is provided so that the head 33 of the access pin 39 protrudes or is flush with the surface 35 by using the elastic force of the leaf spring 51. it can. Further, when the access pin 39 is pushed in, the leaf spring 51 is elastically deformed in parallel with the inclined tongue piece 31 so that the slide cam 27 can be pushed up, and the return after the pushing is realized.

DESCRIPTION OF SYMBOLS 11 ... Door 13 ... Lever axis | shaft 15 ... Inner seat 17 ... Outer seat 19 ... Inside 21 ... C-shaped inclined surface 25 ... C-shaped regulation wall 27 ... Slide cam 29 ... Slide side edge part 31 ... Inclined tongue piece 33 ... Head Part 35 ... Surface 37 ... Tip 39 ... Access pin 41 ... Pin biasing spring 43 ... Swing shaft 45 ... Swing switch 47 ... Lever handle lock 49 ... Gap 51 ... Leaf spring

Claims (2)

An inner seat and an outer seat that support the lever shaft penetrating the door on the front and back of the door,
A C-shaped inclined surface located inside the inner seat and provided on the outer periphery of the lever shaft;
Providing a C-shaped regulating wall that is slidable in a direction orthogonal to the lever shaft inside the inner seat and engages with the C-shaped inclined surface at one slide end position to prevent rotation of the lever shaft. A slide cam,
An inclined tongue piece protruding from the slide side end in the one sliding direction of the slide cam and inclined in a direction away from the outer seat;
An access pin that is slidably supported on the outer seat in a direction along the lever shaft, and whose head can move forward and backward from the surface of the outer seat, and whose tip can press the inclined tongue piece;
A pin biasing spring that biases the access pin in the direction of the pressing;
On the outer periphery of the inner seat, it is arranged so as to be swingable around a swing shaft in the direction along the lever shaft, and the slide cam is pressed by one-side pressing and swinging so that the C-shaped regulating wall is moved to the H-shape. A rocking switch that engages with the inclined surface and advances the access pin from the surface of the outer seat via the inclined tongue piece;
A lever handle lock characterized by comprising: A lever handle lock according to claim 1,
The head of the access pin is flush with the surface of the outer seat by pressing the distal end of the access pin fixed to the slide cam with a gap in the inclined tongue in a direction along the inclined tongue. A leaf spring to be disposed on,
A lever handle lock characterized by comprising:

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