JP3907058B2 - Lock handle device for door - Google Patents

Description

In the present invention, the lock member is protruded and disposed on each of the upper and lower sides of the case, and the lock handle is engaged with the strike member on the fixed frame body, so that the entire or main part of the operation handle is stored in the case. The present invention relates to a flat handle type door lock handle device.

In a conventional flat handle type door lock handle device, a locking shaft orthogonal to the front surface of the door is mounted on the case so that it cannot move back and forth and is rotatable, and the base end of the operation handle is the front end of the locking shaft. The lock plate is pivotally attached to the rear end portion of the locking shaft and has two left and right receiving holes symmetrically with respect to the locking shaft, and the base end portions of the upper and lower pair of locking members are formed in the receiving holes. Rotate the operating handle around the locking shaft and rotate the locking plate from the locked position to the unlocked position after lifting the operating handle from the case and rotating it. The lock member on each of the upper and lower sides is pulled and driven so as to be detached from the strike member on the fixed frame body side (see, for example, Patent Document 1).

In this door lock handle device, the operation handle is not only rotated obliquely in a plane perpendicular to the front surface of the door, but also rotated in a plane parallel to the front surface of the door. It is assumed that the target device has an operation space that allows the operation handle to turn. In addition, it is necessary to secure a certain wide margin space on the back side of the door for the turning operation of the locking plate.

For devices that cannot secure a space that allows rotation of the operation handle and lock plate, the locking members on both the upper and lower sides are driven into the unlocked position only by rotating the operation handle obliquely from the case. The door lock handle device is applied (see, for example, Patent Document 2).

However, in this door handle device, the operation handle is attached to the case by a pivot pin parallel to the front surface of the door, and the base ends of the lock members on the upper and lower sides are connected to the upper and lower sliders housed in the case so as to be movable up and down. , The interlocking disk rotating around the pivot perpendicular to the front of the door is stored in the case, and two cam slots are formed in the interlocking disk symmetrically with respect to the orthogonal pivot, and the slider tip on each side of the upper and lower sides is formed in each cam slot Since the cam projection is inserted and the upper arm slider is pushed down by the drive arm formed at the tip of the operation handle, the structure is relatively complicated and the manufacturing cost increases, and the diameter increases. Since a large force was applied to the interlocking part of the small interlocking disk and slider, there were difficulties in terms of mechanical life.

Japanese Patent No. 2969119 Japanese Patent No. 3035252

It is an object of the present invention to provide a door lock handle device of a type in which the upper and lower lock members are pulled and driven in the unlocking direction only by an operation of lifting and rotating the operation handle. It is to simplify the mechanism, reduce the number of parts, reduce manufacturing costs, and increase the mechanical life.

The main feature of the present invention is that a case for storing the whole or a main part of the operation handle is mounted on the front surface of the door, and a pair of lock members protruding and arranged on the upper and lower sides of the case are engaged with and disengaged from the strike member on the fixed frame side. In the door lock handle device in which the upper and lower lock members are simultaneously pulled in the unlocking direction when the operation handle is lifted and rotated from the case by rotating the operation handle.
Two upper and lower guide slots that are long in the length direction of the case are formed in the case at regular intervals in the length direction, and a fulcrum slot that is long in the depth direction of the case is formed at the midpoint of the two guide slots. The lower pin, in which the distal end of the handle support link is pivotally attached to the rear portion of the operation handle and the lower end lock member is pivotally attached to the proximal end of the handle support link, is moved to the lower guide slot. The tip of the first lift assist link is pivotally attached to the middle portion of the handle support link, and the first support auxiliary link is pivoted from the pivot attachment point of the handle support link at a certain distance in the length direction of the operation handle. The tip of the second lift auxiliary link is pivotally attached to the rear surface of the operation handle, and the pin that pivotally attaches the base end of the second lift auxiliary link to the base end of the first lift auxiliary link is moved to the fulcrum slot. Fitted in Noh, movably fitted insert the upper pin pivotally mounted to the proximal end of the upper lock member to the distal arm portion of the operating handle to the upper side of the guide slot,
When the operation handle is lifted and rotated from its proximal end side, the upper pin and the lower pin are guided to the upper and lower side guides by the cooperative action of the handle support link and the first and second lift assist links. It is moved along the slot, and the lock members on the upper and lower sides are pulled and driven in the unlocking direction.

In the door lock handle device of the present invention, the lock member on each of the upper and lower sides is driven to be pulled in the unlocking direction only by the operation of lifting and rotating the operation handle. Since the turning rotation is unnecessary, the present invention can be applied without trouble to devices and installation locations that cannot secure the extra space necessary for the turning rotation of the operation handle.

The interlocking mechanism between the operation handle and the upper and lower lock members that enable such operation includes the handle support link, the first lift auxiliary link, the second lift auxiliary link, the upper pin, and the lower side that are configured as described above. Since it is constituted by pins, the shape structure is simplified and the number of parts is small, and the manufacturing cost of the entire apparatus can be easily reduced. Moreover, since an excessive force is not applied to the interlocking link mechanism that is an assembly of the link and the pin, the mechanical life of the apparatus can be extended.

In the illustrated embodiment, the case 2 fixed to the door 1 includes an L-shaped member 3 that forms a left side wall and a bottom wall, a flat plate member 4 that forms a right side wall, and a cover member 5 that forms a front side wall. And is composed of. A dovetail recess 7 at the rear edge of the flat plate member 4 is fitted to the dovetail convex portion 6 on the right side surface of the bottom wall portion of the L-shaped member 3, and the L-shaped member 3 and the flat plate member 4 are The flat plate members 4 are fastened and fixed to each other by screws 10 screwed into the screw holes 9 of the L-shaped member 3 from the through holes 8. An upper surface wall plate portion 11 and a lower surface wall plate portion 12 are integrally formed at the upper and lower ends of the L-shaped member 3 and are in contact with the flat plate member 4. The assembly of the L-shaped member 3 and the flat plate member 4 is fitted in the mounting window hole 13 of the door 1 from the rear side of the door 1 to the extension ears of the upper wall plate 11 and the lower wall plate 12. The part 14 is abutted against the back surface 1 b of the door 1.

A cover member 5 is fitted to the front end portion of the assembly of the L-shaped member 3 and the flat plate member 4, and the rear peripheral edge portion of the cover member 5 is abutted against the front surface 1 a of the door 1. Two connecting leg pieces 15 are formed on the left and right sides of the cover member so as to protrude on the back side, and the front end claw portion 16 of each connecting leg piece 15 has a locking groove formed in the L-shaped member 3 and the flat plate member. By elastically engaging the edge of the hole 17, the cover member 5 is held in the fitted state. On the back side of the upper and lower end portions of the cover member 5, a positioning boss portion 19 that is inserted into the front concave portion 18 of the overhanging ear portion 14 is formed to project. The cover member 5 and the L-shaped member 3 are fastened and fixed to each other by a screw 22 screwed into the screw hole 21 of the positioning boss portion 19 from the through hole 20 of the overhanging ear portion 14.

The cover member 5 is formed with a vertically long opening 24 through which the operation handle 23 can be retracted. The upper guide slot 25 is formed at a position opposite to both the left side wall portion of the L-shaped member 3 and the flat plate member 4. The lower guide slot 26 is also formed at a position opposite to both the left side wall portion of the L-shaped member 3 and the flat plate member 4. The upper guide slot 25 and the lower guide slot 26 are formed in parallel with the front surface 1a of the door 1 and aligned on the same straight line. The slider plate 28 connected to the base end portion of the upper lock member 27 is slidably fitted into the case 2 from a guide groove 29 formed in the right edge portion of the top wall plate portion 11 of the L-shaped member 3. It is inserted. A roller-type latch body 30 is connected to the distal end side of the upper lock member 27 as an example of a known locking mechanism. A strike member 33 is fixed to the front wall plate portion 32 of the fixed frame 31 that is typically a device housing, and the latch body 30 engages with the back side of the strike member 33, whereby the door 1. Is locked to the fixed frame 31.

The slider plate 35 connected to the base end portion of the lower lock member 34 is slidable in the case 2 from the guide groove 36 formed in the rear edge of the lower wall plate portion 12 of the L-shaped member 3. It is inserted. A roller-type latch body 30 is connected to the distal end side of the lock member 34 as an example of a known locking mechanism. A strike member 33 is fixed to the front wall plate portion 32 of the fixed frame 31 that is typically a device housing, and the latch body 30 engages with the back side of the strike member 33, whereby the door 1. Is locked to the fixed frame 31.

The fulcrum slot 37 is formed at a position opposite to the left side wall portion of the L-shaped member 3 and the flat plate member 4, and is a slot that is slightly longer in the depth direction of the case 2. The entire end of the fulcrum slot 37 is disposed behind the line segment connecting the upper guide slot 25 and the lower guide slot 26. The handle support link 38 is formed in a bell crank shape with a bent base end. The lower pin 39 parallel to the door front face 1a is fitted into the shaft hole 40 of the upright plate portion 35a of the slider plate 35, the shaft hole 41 of the base end portion of the handle support link 38, and the lower guide slot 26. ing. The lower pin 39 is prevented from being removed by the head 39 a and the retaining ring 42.

The front end of the handle support link 38 is pivotally attached to the back surface of the operation handle 23 by a pin 43 parallel to the door front surface 1a. A pin 46 that pivotally attaches the tip of the first lift assist link 45 to an intermediate portion of the handle support link 38 is disposed in parallel with the door front surface 1a. A pin 48 for pivotally attaching the tip of the second lift assist link 47 to the back surface of the operation handle 23 is disposed in parallel with the door front surface 1a. The lengths of the first lift auxiliary link 45 and the second lift auxiliary link 47 are the same. A fulcrum pin 49 that pivotally attaches the base end of the second lift auxiliary link 47 to the base end of the first lift auxiliary link 45 is arranged in parallel with the door front surface 1a. The base end of the slider plate 28 of the upper lock member 27 is pivotally attached to the distal arm 50 formed obliquely projecting from the back side of the operation handle 23 by an upper pin 51 parallel to the door front face 1a. The upper guide slot 25 and the lower guide slot 26 have the same length.

An upper pin 51 parallel to the door front face 1 a is fitted into the shaft hole 52 of the slider plate 28, the shaft hole 53 of the tip arm portion 50, and the upper guide slot 25. The upper pin 51 is prevented from being removed by the head 51 a and the retaining ring 54. A known cylinder lock 55 is incorporated in the base end portion of the operation handle 23, and a lock plate 57 driven by a cam protrusion 56 formed eccentrically at the tip of the rotor is a metal receiver provided on the L-shaped member 3. By engaging with the portion 58, the operation handle 23 can be firmly held at the position stored in the case 2.

In the locked state, the operation handle 23 is stored in the case 2, and the fulcrum pin 49 is located at the rear end of the fulcrum slot 37 as shown in FIG. 4. The upper pin 51 is located at the upper end of the upper guide slot 25, and the lower pin 3 is located at the lower end of the lower guide slot 26. A pin 46 for pivotally connecting the handle support link 38 to the first lift assist link 45 and a pin 48 for pivotally connecting the second lift assist link 47 to the operation handle 23 are on the same straight line parallel to the door front face 1a. Is arranged. The pin 43 that pivotally connects the handle support link 38 to the operation handle 23 is located slightly beyond the line connecting the pin 46 and the pin 48 to the rear side. The pin 43 and the fulcrum pin 49 are arranged on a bisector of the included angle between the first lift assist link 45 and the second lift assist link 47. A line segment connecting the pin 46 and the pin 48 is arranged in front of a line segment connecting the upper guide slot 25 and the lower guide slot 26.

As described above, in the locked state, the pin 43 is disposed at a position slightly beyond the line connecting the pin 46 and the pin 48 to the rear side, and the pin 43 and the fulcrum pin 49 are connected to the first lift assist link. Since the fulcrum pin 49 is disposed on the rear side of the line segment connecting the pin 46 and the pin 48, the vibration is generated from the outside. Even when an impact is applied, the external force does not become a force for lifting the operation handle 23 from the case 2, and the operation handle 23 is stably held at a position stored in the case 2.

On the outer surface of the base end side of the left and right side wall portions 44 of the operation handle 23, the locking tongue piece 60 is provided at a portion corresponding to the locking recess 59 formed on the left side wall portion of the L-shaped member 3 and each inner surface of the flat plate member 4. Protrusions are formed. When the operation handle 23 is housed in the case 2, the operation handle 23 is stably held in the case 2 by the elastic tongue 60 engaging with the engagement recess 59. On the front surface side of the bottom wall portion of the L-shaped member 3, an inclined surface 61 with which the first lift auxiliary link 45 abuts in a locked state and an inclined surface 62 with which the second lift auxiliary link 47 abuts are wide-angle V-shaped. It is formed in a shape. A fulcrum pin 49 parallel to the door front surface 1 a is fitted into the shaft hole 63 of the first lift assist link 45, the shaft hole 64 of the second lift assist link 47, and the fulcrum slot 37. The fulcrum pin 49 is prevented from coming off by a head 49 a and a retaining ring 65.

In FIG. 4, a predetermined key is inserted into the cylinder lock 55, and the lock plate 57 is pulled and slid by the cam projection 56 of the rotor to disengage the lock plate 57 from the receiving portion 58. When the operation handle 23 is lifted by placing a finger on the base end side, that is, the lower end side, the handle support link 38 rotates with respect to the operation handle 23 around the pin 43 as shown by a chain line in FIG. The second lift assist link 47 rotates around the pin 48 relative to the operating handle 23, the first lift assist link 45 rotates around the pin 46 relative to the handle support link 38, Since the fulcrum pin 49 moves forward in the fulcrum slot 37 while narrowing the angle between the lift assist link 45 and the second lift assist link 47, the operation handle 23 is It is drawn out while rotating from over scan 2 diagonally. In the process of pulling and rotating, the upper pin 51 moves downward in the upper guide slot 25, and the lower pin 39 moves upward in the lower guide slot 26.

When the upper pin 51 moves to the lower end portion of the upper guide slot 25 and the lower pin 39 moves to the upper end portion of the lower guide slot 26, the upper pin 51 and the lower lock member 34 are respectively connected to the leading ends. The connected latch bodies 30 are released from the corresponding strike members 33 to release the lock of the door 1 with respect to the fixed frame body 31. Therefore, the door 1 is opened by pulling the operation handle 23 forward as it is.

It is a front view including the upper and lower lock members of the lock handle device for a door according to one embodiment of the present invention. It is a front view of the principal part of the lock handle apparatus for doors of FIG. 1, and exists in the locked state in which the operation handle was accommodated in the case. It is the right view which showed the operation state of the lock handle apparatus for doors of FIG. 1 with the dashed line. It is a center longitudinal cross-sectional view of the lock handle apparatus for doors of FIG. It is a rear view of the lock handle device for doors of FIG. It is a bottom view of the lock handle device for doors of FIG. It is the sectional view on the AA line of FIG. It is the BB sectional view taken on the line of FIG. It is CC sectional view taken on the line of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Door 1a Door front surface 1b Door rear surface 2 Case 3 Case L-shaped member 4 Case flat plate member 5 Case cover member 6 Dovetail groove-shaped convex portion 7 Dovetail groove-shaped concave portion 8 Flat plate member through-hole 9 L-shaped member screw hole 10 Screw 11 Case upper surface wall plate portion 12 Case lower surface wall plate portion 13 Door window hole 14 Case overhanging portion 15 Cover member connecting leg piece 16 Connecting leg piece tip claw portion 17 Case locking groove hole 18 Front recess 19 of overhang ear 19 Positioning boss portion 20 of cover member Through hole 21 of overhang ear portion Screw hole 22 of positioning boss portion Screw 23 Operation handle 24 Vertically long opening portion 25 of case Upper guide slot 26 Lower side of guide slot 26 Guide slot 27 Upper lock member 28 Upper slider plate 29 Guide groove 30 in upper wall plate portion Roller type latch body 31 Fixed frame body 32 Front wall plate portion 33 of fixed frame body Strike member 34 Lower side Lock member 35 Lower slider plate 35a Standing plate portion 36 of lower slider plate Guide groove 37 of lower wall plate portion Support point slot 38 Handle support link 39 Lower pin 39a Lower pin head 40 Shaft hole of rising plate portion 41 Handle support link shaft hole 42 Lower pin retaining ring 43 Pin for pivotal support of handle support link and operation handle 44 Side wall portion 45 of operation handle First lift assist link 46 Handle support link and first lift assist A pivot pin 47 for the link A second lift assist link 48 A pivot pin 49 for the second lift assist link and the operating handle 50 A pivot pin 50 for the first and second lift assist links Tip arm 51 Upper pin 51a Upper pin head 52 Shaft hole 53 of upper slider plate Shaft hole 54 of upper arm portion Stop upper pin Ring 55 Cylinder lock 56 inclined surface for engagement tongue 61 first lifting auxiliary link for the inclined surface 62 second lift auxiliary link of the latching recess 60 the operating handle of the socket member 59 case of the cam projection 57 case

Claims (1)

A case for storing the whole or main part of the operation handle is mounted on the front of the door, and a pair of lock members protruding above and below the case are engaged with and disengaged from the strike member on the fixed frame body, so that the door is attached to the fixed frame body. In the door lock handle device in which the lock member on each of the upper and lower sides is simultaneously driven to be pulled in the unlocking direction when the operation handle is lifted and the handle is lifted and rotated from the case.
Two upper and lower guide slots that are long in the length direction of the case are formed in the case at regular intervals in the length direction, and a fulcrum slot that is long in the depth direction of the case is formed at the midpoint of the two guide slots. The lower pin, in which the distal end of the handle support link is pivotally attached to the rear portion of the operation handle and the lower end lock member is pivotally attached to the proximal end of the handle support link, is moved to the lower guide slot. The tip of the first lift assist link is pivotally attached to the middle portion of the handle support link, and the first support auxiliary link is pivoted from the pivot attachment point of the handle support link at a certain distance in the length direction of the operation handle. The tip of the second lift auxiliary link is pivotally attached to the rear surface of the operation handle, and the pin that pivotally attaches the base end of the second lift auxiliary link to the base end of the first lift auxiliary link is moved to the fulcrum slot. Fitted in Noh, movably fitted insert the upper pin pivotally mounted to the proximal end of the upper lock member to the distal arm portion of the operating handle to the upper side of the guide slot,
When the operation handle is lifted and rotated from its proximal end side, the upper pin and the lower pin are guided to the upper and lower side guides by the cooperative action of the handle support link and the first and second lift assist links. A lock handle device for a door which is moved along a slot and is driven by pulling the lock members on the upper and lower sides in the unlocking direction.

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