JP2016196986A - Handle device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a handle device capable of opening a door with light control force.SOLUTION: A latch receiving tool 60 to/from which a latch 22 is engaged/disengaged is attached to the periphery of an opening part 2 opened/closed by a door 3, and at an end part on an oscillation center side of an operation handle 27, provided is an extension part 28 opposite to the latch receiving tool 60 at the front and back in a closed state of the door 3. The latch 22 is subjected to engagement release to the latch receiving tool 60 by oscillation toward an unlocking position of the operation handle 27; the door 3 is slightly opened with the action of a lever to eliminate the difference between internal pressure and outside pressure, by oscillation of the operation handle 27 from a state where the extension part 28 contacts with the latch receiving tool 60; and thereby the door 3 can be opened with light force.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a handle device for opening and closing a door that opens and closes an opening.

  The door for opening and closing the opening serving as the entrance and exit of the commercial refrigerator is normally opened and closed by a handle device provided on the door end side. As the handle device, one described in Patent Document 1 below has been conventionally known.

  In the handle device described in Patent Document 1, a pedestal called a device main body is attached to the outer surface of the door at the door end side, and the operation handle is swingably supported on the pedestal via a pivot. The latch supported by the pedestal is slid in conjunction with the swing of the operation handle.

  In commercial refrigerators, by closing the door, the packing provided on one of the outer peripheral portion of the inner surface of the door and the door contact surface in the outer periphery of the opening is kept in close contact with the other to maintain airtightness. In the handle device, the closed end of the door is maintained by engaging the front end of the latch with the latch receiving member when the door is closed.

  Further, when opening the door, the operation handle is pulled toward the unlocking position by pulling the operation handle, and the latch is moved backward from the latch holder to release the engagement. The door is opened by further pulling the operation handle in the same direction.

Japanese Utility Model Publication No. 60-70157

  By the way, in the conventional handle device described above, the latch is disengaged by an operation of pulling the operation handle, and the door is opened by a series of operations of further pulling the operation handle. Need.

  That is, in commercial refrigerators, the pressure drops due to cooling in the cabinet, and there is a pressure difference between the cabinet pressure and the external pressure, and the differential pressure acts in the direction of closing the door, and the door itself Therefore, it is necessary to apply a large operating force corresponding to the differential pressure and the door weight to the operation handle, and the door cannot be easily opened.

  An object of the present invention is to provide a handle device that can open a door with a light operating force when used in a commercial refrigerator or a refrigerator.

  In order to solve the above-described problems, in the present invention, a handle operating tool attached to a door-side outer surface of a door that opens and closes an opening, and an outer surface of a peripheral wall in which the opening is formed are attached to the handle operating tool. A latch receiver that is mounted so as to face each other, wherein the handle operating tool has a latch guide tube and a protrusion provided on an outer surface of the latch guide tube, and one end opening of the latch guide tube is the latch A pedestal that is attached to the outer surface of the door so as to face the receptacle, and is slidably incorporated in the latch guide tube of the pedestal, and the door is held closed by engagement of the tip with the latch receptacle. A latch, an elastic member that urges the latch in a direction in which the latch is engaged with the latch receiver, and a door-end side end portion of the protruding portion of the pedestal with both ends up and down A supported fulcrum pin, an operation handle supported so as to be swingable around the fulcrum pin, and a motion conversion mechanism for converting the swing motion of the operation handle into the slide motion of the latch, The end of the operation handle on the swing center side faces the outer surface of the latch receiver in the front and rear direction when the door is closed, and the latch is received by the swing operation toward the unlocking position of the operation handle. A configuration is adopted in which an extension portion that comes into contact with the outer surface of the latch receiving member after the engagement is released from the device is employed.

  In the handle device configured as described above, when the door is closed, the latch is engaged with the latch receiving member, and the door is held in the closed state. In the closed state, the extending portion provided at the end portion on the swing center side of the operation handle is in a state of facing the latch receiver in the front-rear direction.

  When an operation force in the pulling direction is applied to the operation portion of the operation handle from the closed state of the door as described above, the operation handle swings toward the unlocking position, and the latch moves backward in conjunction with the swing. . When the front end of the latch is released from the latch receiver and released from engagement, the extending portion comes into contact with the outer surface of the latch receiver. When the operating handle is further swung from the contacted state toward the unlocked position, the operating force is directed outward from the swinging center of the operating handle with the contact position of the extending portion with respect to the latch receiving tool as a fulcrum. Is granted. Since the operation force is due to the action of the lever, it is extremely large, and the door is slightly opened by the application of the operation force.

  For this reason, when the door is a door of a commercial refrigerator, the outside air flows into the warehouse at the same time as the door is opened, the pressure difference between the inside and the outside disappears, and the door can be opened with a light force. .

  Here, the movement converting mechanism has an arm that can swing around an arm support pin supported at the door-side end of the protrusion of the pedestal, and on the swing side facing the latch of the arm. An engagement piece that engages with a latch pin provided at a rear end portion of the latch at an end portion, and extends long toward the arm support pin at an end portion on a swinging side facing the operation handle. Provided with a long hole inserted with an interlocking pin provided at a position offset from the swing center to the operation part side, and the arm is interlocked with the swing of the operation handle by pressing the interlocking pin against the inner periphery of the long hole. It is possible to employ a configuration in which the latch is moved by pushing the latch pin with the engagement piece of the arm and moving the latch toward the disengagement position.

  In the present invention, as described above, when the operating handle is swung toward the unlocked position, the latch is disengaged, and after the disengagement, the extending portion comes into contact with the outer surface of the latch receiver. Because of the action of the lever, it is possible to apply an extremely large operating force to the swinging center of the operating handle, and the load opens the door slightly, eliminating the pressure difference between the inside and outside of the door. Can be made.

1 shows an embodiment of a handle device according to the present invention, (I) is a partially cutaway plan view, and (II) is a front view. Sectional drawing which expands and shows a part of FIG. Partially cutaway sectional view along the line III-III in Fig. 1 (II) Sectional view along line IV-IV in FIG. Sectional view with the door slightly open Exploded perspective view of various parts forming the handle operating tool

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 (I) and (II) show an example in which the handle device according to the present invention is used for opening and closing a door of a commercial refrigerator. Here, the refrigerator A is provided with an opening 2 as an entrance / exit on the peripheral wall 1, and the opening 2 is opened and closed by a swingable supported door 3. When the door 3 is closed, the door 2 is opened. The packing 4 provided on the outer peripheral portion of the inner surface 3 is in close contact with the door contact surface around the opening 2 so as to keep the interior in a sealed state.

  As shown in FIGS. 1 (I) and (II), the handle device includes the handle operating tool 10 attached to the door-side outer surface of the door 3 and the outer surface of the peripheral wall 1 in which the opening 2 is formed. The latch receiving tool 60 is attached so as to face the handle operating tool 10.

  The latch receiver 60 includes a bracket 61 screwed to the outer surface of the peripheral wall 1 and an L-shaped engagement piece 64 screwed to the bracket 61. The bracket 61 has a U-shaped cross section in which a pair of opposed side plates 63 are formed on both sides of the support plate 62, and an engagement piece 64 is abutted against the inner side surface of the support plate 63 and tightened with a screw 65. Adjustable support. The latch receiver 60 is attached so that the engagement piece 64 faces the opening 2.

  As shown in FIGS. 2 to 4 and 6, the handle operating tool 10 is attached to the door 3 so as to cover the seat plate 11 attached to the outer surface of the door 3 on the door tip side. A pedestal 13 is provided.

  The seat plate 11 has a rectangular shape. The seat plate 11 is abutted against the outer surface of the door 3 so that one end of the seat plate 11 faces the latch receiver 60, and the mounting pieces 12 provided on the upper side and the lower side are screwed into the door 3 in the abutted state. It is attached to the door 3 by tightening screws.

  The pedestal 13 has a latch guide cylinder 14 having a U-shaped cross section. The latch guide tube 14 can be fitted to the seat plate 11 so as to be able to cover the entire seat plate 11, and the outer surface of the latch guide tube 14 extends from one end in the length direction of the latch guide tube 14. 15 is provided. Further, mounting pieces 16 are provided on the upper side surface and the lower side surface of the latch guide cylinder 14, and the opening portion of the concave portion 17 provided on the outer surface side of the mounting piece 16 is closed by the attachment of the lid 18.

  The base 13 is assembled to the seat plate 11 so that one end of the latch guide cylinder 14 is opposed to the latch receiver 60, and the mounting pieces 16 provided on the upper side surface and the lower side surface are tightened with screws 19. 3 is attached.

  On the outer surface of the projecting portion 15, a rectangular recess 20 is provided at the central portion in the length direction of the projecting portion 15. On the bottom surface of the recess 20, there is provided a rectangular tube portion 21 that projects into the latch guide tube 14.

  A latch 22 is slidably incorporated in the latch guide cylinder 14. The latch 22 is configured such that the door end side end portion is freely detachable with respect to the inner surface of the engagement piece 64 of the latch receiver 60, and the arcuate inclined surface 23 is formed on the back side with respect to the outer surface of the door end side end portion. Is provided.

  The latch 22 is provided with a guide groove 24 extending from the rear end surface to the door end side end. The rectangular tube portion 21 of the pedestal 13 is inserted into the guide groove portion 24, and the door-end side end portion of the latch 22 is located outside the one end opening of the latch guide tube 14 between the rectangular tube portion 21 and the closed end of the guide groove portion 24. An elastic member 25 that urges toward the protruding direction (engagement direction) is incorporated.

  A fulcrum pin 26 is supported by the protruding portion 15 of the pedestal 13 at a position offset from the recess 20 toward the door end side end. The fulcrum pin 26 is supported so that both ends thereof are vertically positioned, and an operation handle 27 is swingably supported around the fulcrum pin 26.

  Between the operation handle 27 and the latch 22, a motion conversion mechanism 30 that converts the swing motion of the operation handle 27 into the slide motion of the latch 22 is provided. The motion conversion mechanism 30 is provided with an arm 32 swingably around an arm support pin 31 supported at the door butt side end of the protrusion 15 of the base 13, and the door of the latch guide tube 14 of the arm 32 is provided. An engaging piece 33 is provided at the end of the swinging side that is inserted into the notch 34 provided at the end on the bottom side and faces the latch 22, and the engaging piece 33 is provided at the end on the door bottom side of the latch 22. The latch pin 35 is engaged.

  In addition, a long hole 36 that extends long toward the arm support pin 31 is formed at the end of the arm 32 on the swing side facing the operation handle 27. An interlocking pin 37 is provided at a position offset to the operation unit side, and the interlocking pin 37 is inserted into the elongated hole 36.

  In the motion conversion mechanism 30 having the above configuration, the arm 32 is swung around the arm support pin 31 by pressing the inner periphery of the long hole 36 by the interlocking pin 37 by swinging of the operation handle 27, and the arm 32 The latch pin 35 is pressed by the engagement piece 33 provided on the door, and the latch 22 is moved backward toward the door end.

  The operation handle 27 is provided with an extending portion 28 at the end on the swing center side supported by the fulcrum pin 26 and facing the outer surface of the engagement piece 64 of the latch receiver 60 in the front-rear direction. After the latch 22 is moved backward by the swing of the operation handle 27 toward the unlocking position and the engagement portion 64 is released from the engagement piece 64, It comes into contact with the outer surface.

  The operation handle 27 is provided with a support cylinder 38 at a position slightly offset from the fulcrum pin 26 toward the door butt side end. The support cylinder 38 is inserted into the aforementioned recess 20 formed in the protruding portion 15 of the pedestal 13, and a cylinder 39 that is rotated by an operation key is incorporated in the support cylinder 38.

  A cylinder cam 40 is connected to the tip of the cylinder 39. As shown in FIG. 5, the cylinder cam 40 is provided with a split groove 40 a penetrating from one side of the outer periphery to the other side, and is engaged with a rotatable cylinder receiver 41 incorporated in the rectangular tube portion 21 of the pedestal 13. It is supposed to be removable. A cylindrical lock cam 42 is connected to the cylinder receiver 41, and a U-shaped bent portion 44 a provided at the end of the lock plate 44 on the door end side is formed on the cam surface 43 formed on the front end surface of the lock cam 42. Opposite.

  The lock plate 44 is supported at its door end side by a pin 45 provided on the seat plate 11, and its tip is pressed against the cam surface 43 by a spring 44 b incorporated between the lock plate 44 and the seat plate 11.

  As shown in FIGS. 2 and 6, lock pieces 46 are provided on the upper side and the lower side at the door end side end portion of the lock plate 44. On the other hand, a notch 47 is provided at the rear end of the latch 22, and the latch 22 is locked in a state of being engaged with the engagement piece 64 of the latch receiver 60 by the engagement of the lock piece 46 with the notch 47. .

  Here, when the cylinder 39 is rotated by the operation key, the lock cam 42 is rotated, and the door end side end of the lock plate 44 is pushed by the rotation of the cam surface 43 of the lock cam 42 toward the seat plate 11. And the engagement of the lock piece 46 with the notch 47 is released, and the lock of the latch 22 is released.

  As shown in FIG. 6, two arms 32 are made into a set, and an inner arm 48 is incorporated between opposing portions of the two arms 32 as shown in FIG. 3. The inner arm 48 is swingably supported around the arm support pin 31, and a notch 49 is formed at the end of the swinging side facing the latch 22, and the latch pin 35 is inserted into the notch 49. ing.

  Further, the inner arm 48 is provided with a bifurcated piece 50 extending toward the operation portion of the operation handle 27 on one side of the swinging side end portion, and an emergency is provided by a pin 51 supported at the distal end portion of the bifurcated piece 50. A lever 52 is swingably supported.

  A cam piece 53 for pressing the lock plate is provided at the swing side end of the emergency lever 52. Further, the emergency lever 52 is provided with a pressing piece 54 facing the side edge of the inner arm 48 on the door side of the forked piece 50.

  The operation lever end of the emergency lever 52 faces the insertion hole 55 formed in the door 3 and the hole 56 formed in the seat plate 11. The operation lever prepared in advance is inserted into the hole 56 from the insertion hole 55 and the operation side end is pushed in, whereby the emergency lever 52 swings and the cam piece 53 presses the lock plate 44. Due to the pressing, the lock plate 44 is bent and the engagement of the lock piece 46 with the notch 47 is released, and the lock of the latch 22 is released. Further, the pressing piece 54 of the emergency lever 52 presses the bifurcated piece 50 of the inner arm 48, the inner arm 48 swings by the pressing, the side edge of the notch 49 presses the latch pin 35, and the latch 22 moves backward. The engagement with the latch receiver 60 is released.

  The handle device shown in the embodiment has the above-described structure, and FIG. 2 shows a closed state of the door 3, and the packing 4 is in close contact with the door-contacting surface around the opening 2 of the peripheral wall 1 and the interior is sealed. Hold on. The latch 22 is engaged with the inner surface of the engagement piece 64 of the latch receiver 60 to hold the door 3 in a closed state. At this time, the extending portion 28 of the operation handle 27 faces the engaging piece 64 of the latch receiving device 60 in the front-rear direction, and a gap is provided between the facing portions.

  In addition, the lock piece 46 of the lock plate 44 is disengaged from the notch 47 provided at the door butt side end of the latch 22, and the latch 22 is in the unlocked state.

  In the closed state of the door 3 as described above, when the operation handle 27 is swung toward the unlocked position by pulling the operation portion which is the door bottom side end portion of the operation handle 27, the interlocking pin 37 is moved to the arm 32. The inner surface of the long hole 36 formed on the arm 32 is pressed, and the arm 32 swings around the arm support pin 31 by the pressing. Further, when the arm 32 swings, the engaging piece 33 provided on the arm 32 presses the latch pin 35, and the latch 22 slides toward the door bottom side against the elasticity of the elastic member 25 by the pressing. The engagement of the latch receiver 60 with the engagement piece 64 is released.

  Further, after the latch 22 is disengaged, the distal end of the extending portion 28 of the operation handle 27 comes into contact with the outer surface of the engagement piece 64 as shown by a chain line a in FIG. When the operation portion of the operation handle 27 is further pulled in the same direction from the contact state, the contact position of the extension portion 28 with respect to the engagement piece 64 of the latch receiver 60 is the pivot point of the operation handle 27. An outward operation force is applied to the fulcrum pin 26. Since the operation force is due to the action of the lever, it is extremely large, and the door 3 is slightly opened by the application of the operation force.

  FIG. 5 shows a slight open state of the door 3, and when the door 3 is opened, outside air flows into the cabinet, so that there is no pressure difference between the inside and the outside, and the door 3 is opened by a light handle operating force. be able to.

  When the operation handle 27 is released in the open state of the door 3, the latch 22 is returned to the engagement position where the tip protrudes from the opening at the door end side of the latch guide cylinder 14 by the restoring elasticity of the elastic member 25. It is. When the operation handle 27 is pressed in this state to swing the door 3 toward the closed position, the inclined surface 23 provided at the door end side end portion of the latch 22 at a position just before the door 3 is closed. The latch 22 abuts against the end of the engagement piece 64 of the latch receiver 60, and the contact causes the latch 22 to slide toward the disengagement position against the elasticity of the elastic member 25.

  When the door end side end of the latch 22 passes the end of the engagement piece 64, the latch 22 slides toward the engagement position by the restoring elasticity of the elastic member 25, and as shown in FIG. The door 3 is held in a closed state. Further, the extending portion 28 of the operation handle 27 is held in a state of facing the outer surface of the engagement piece 64 with a gap.

  As described above, in the handle device according to the embodiment, when the operation portion of the operation handle 27 is swung toward the unlocking position by the operation, the latch 22 is disengaged and the extension portion 28 is the latch holder. 60 abuts on the outer surface. By pulling the operation handle 27 further in the same direction from the contact state, an extremely large operation force can be applied to the fulcrum pin 26 which is the center of swinging of the operation handle 27 by the action of the lever. It can be opened slightly. Since the outside air flows into the cabinet by opening the door 3 and the pressure difference from the outside disappears, the door can be opened with a light force.

  In the embodiment, the example in which the handle device according to the present invention is used for opening and closing the door of the commercial refrigerator is shown, but the usage example is not limited to this. For example, it may be a refrigerator.

2 Opening portion 3 Door 10 Handle operating tool 13 Base 14 Latch guide tube 15 Protruding portion 22 Latch 25 Elastic member 26 Support point pin 27 Operation handle 28 Extension portion 30 Motion conversion mechanism 31 Arm support pin 32 Arm 33 Engagement piece 35 Latch pin 36 Long hole 37 interlocking pin

Claims (2)

  A handle operating tool attached to the door-end-side outer surface of the door that opens and closes the opening, and a latch receiver attached to face the handle operating tool on the outer surface of the peripheral wall in which the opening is formed, The handle operating tool has a latch guide tube and a protrusion provided on the outer surface of the latch guide tube, and the one end opening of the latch guide tube faces the latch receiving member on the outer surface of the door. A pedestal to be attached, a latch that is slidably incorporated in the latch guide cylinder of the pedestal, and that holds the door in a closed state by engagement of the tip with the latch receiver, and the latch is engaged with the latch receiver An urging member that is urged toward the direction of movement, a fulcrum pin that is supported on the door end of the protruding portion of the pedestal with both ends up and down, and the fulcrum pin An operation handle that is movably supported; and a motion conversion mechanism that converts a swing motion of the operation handle into a slide motion of the latch, and the door is provided at an end of the swing center side of the operation handle. The outer surface of the latch receiver after the latch is disengaged from the latch receiver by swinging toward the unlocking position of the operation handle in the closed state of the latch receiver. A handle device provided with an extending portion that comes into contact with the handle.   The motion conversion mechanism has an arm that can swing around an arm support pin supported by a door-side end of the protrusion of the pedestal, and an end on the swing side of the arm that faces the latch An engagement piece that engages with a latch pin provided at a rear end portion of the latch at a portion, and a swing side end portion that opposes the operation handle, extends long toward the arm support pin, and swings the operation handle. Provided with a long hole inserted with an interlocking pin provided at a position offset from the moving center to the operation unit side, and the arm is rocked in conjunction with the swing of the operation handle by pressing the interlocking pin against the inner periphery of the long hole. The handle device according to claim 1, wherein the handle device is configured to move and to move the latch toward the disengagement position by pressing the latch pin with the engagement piece of the arm.

Images