JP2012233376A - Cover opening/closing mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cover opening/closing mechanism simply constructed to keep a cover plate in an opened condition, when opened.SOLUTION: A cover plate 3 is turnably supported at one end by a hinge mechanism 4. The hinge mechanism 4 comprises: a pair of bearing parts 72a and 72b provided at positions opposing each other across a dial operation part 14; a pair of right and left pivotal shafts 5a and 5b non-turnably and slidably supported in journal holes 36a and 36b opened to the upper end positions at both side ends of the cover plate 3; and springs 6a and 6b energizing the pivotal shafts 5a and 5b toward openings, respectively. The pivotal shafts 5a and 5b have round shaft portions 52 which are taper-shaped by tapered faces 53 and 53 directed to the opposite sides, the right and left bearing parts 72a and 72b have bearing holes turnably supporting the round shaft portions 52 of the pivotal shafts 5a abd 5b, and V-shaped grooves are formed in the hole bottoms of the bearing holes, where the tapered faces 53 and 53 of the round shaft portions 52 abut when the cover plate 3 is closed, respectively.

Description

  The present invention relates to a lid opening / closing mechanism in which one end of the lid plate is rotatably supported by a hinge mechanism in various devices and instruments in which a region for operation or display is covered with an openable / closable lid plate About.

  For example, in a hot water supply system, an air conditioner system, and the like, a remote controller is installed at a location away from the device main body, and start, stop, and various settings such as hot water supply and air conditioning can be performed by operating the remote controller. In this type of remote controller, as shown in FIG. 13, a hinge-type lid plate 9 is provided in a casing 90 so as to be openable and closable. Operation is possible (for example, refer patent document 1).

  The cover plate 9 is attached to the casing 90 by a hinge mechanism 93 with the lower end portions on both sides as fulcrums. When operating the key operation unit 91, the cover plate 9 is tilted forward to expose the key operation unit 91 covered with the cover plate 9. Since the cover plate 9 hangs down from the casing 90 due to its own weight, the cover plate 9 remains open even when the hand is released from the cover plate 9, and both hands can be freely used for key operation.

JP 10-304479 A

  However, in the lid opening / closing structure described above, the lid plate 9 hangs down from the casing 90, so that an extra space is required. On the other hand, the lid plate 9 can be attached to the casing 90 by a hinge mechanism with the upper ends on both sides of the lid plate 9 as fulcrums. However, when the lid plate 9 is opened upward and the hand is released from the lid plate 9, the lid plate 9 is self-weighted. The lid plate 9 is tilted and closed, and the cover plate 9 cannot be kept open. In order to maintain the cover plate 9 in the open state, it is necessary to support the cover plate 9 by hand, which is inconvenient because both hands cannot be used freely during key operation. Further, when the lid plate 9 falls by its own weight and closes, the lid plate 9 is likely to be in a half-open state. To prevent this, it is necessary to provide a meshing portion between the lid plate 9 and the casing 90, which increases costs. It becomes.

  The present invention has been made paying attention to the above-described problem. Even when the lid plate is attached to be openable and closable by the hinge mechanism with the upper end portions on both sides of the lid plate as fulcrums, the lid plate is opened and the lid plate is opened. Even if the hand is released, the open state of the cover plate is maintained, both hands can be used freely for operation, and when the cover plate is closed, the cover plate is not easily opened halfway. An object is to provide a lid opening / closing mechanism.

  In the lid opening / closing mechanism according to the present invention, one end portion of a lid plate covering a region for operation or display is rotatably supported by a hinge mechanism, and the hinge mechanism is opposed across the region. A pair of bearing portions provided at positions, a pair of left and right pivots that are non-rotatable and slidably supported in shaft support holes that open to positions that serve as fulcrums at both ends of the lid plate, and are disposed in the shaft support holes. It comprises a spring that biases each pivot toward the opening of the shaft support hole. Each pivot has a round shaft portion protruding from the opening of the shaft support hole, and the round shaft portion is formed in a tapered shape by a tapered surface facing the opposite side. Each of the left and right bearing portions has a bottomed bearing hole that freely supports the round shaft portion of each pivot, and the round shaft portion is in a state where the cover plate is closed at the bottom of each bearing hole. V-shaped grooves with which the respective taper surfaces abut are formed.

  According to the lid opening / closing mechanism having the above-described configuration, when the lid plate is in the closed state, in the hinge mechanism, the tapered surfaces of the round shaft portions of the left and right pivots are formed in the V-shaped grooves at the bottoms of the left and right bearing holes. Abutted and kept closed. When the cover plate is opened, the round shaft portions of the left and right pivots are pivoted in the left and right bearing holes, and the tip of the round shaft portion is pushed up along the V-shaped groove. When the opening angle of the cover plate reaches approximately 90 degrees, the tip of the round shaft portion is in a state straddling the groove opening of the V-shaped groove, and the state is maintained by the spring pressure of the spring. Is kept open.

If the cover plate is further opened and the opening angle of the cover plate exceeds 90 degrees, the cover plate is urged in the opening direction by the spring pressure of the spring, and each tapered surface of the round shaft portion has a V-shaped groove in each bearing hole. When it comes into contact with the lid plate, the lid plate is in an open state of approximately 180 degrees. The upper limit of the opening angle can be freely set between 90 degrees and 180 degrees by a stopper or the like.
On the other hand, when the cover plate is closed and the opening angle of the cover plate becomes smaller than 90 degrees, the cover plate is urged in the closing direction by the spring pressure of the spring, and each tapered surface of the round shaft portion is V-shaped in each bearing hole. When it comes into contact with the groove, the cover plate is completely closed.

  In the above configuration of the present invention, the “region for operation or display” is a region where switches, keys, dials, etc. are arranged, and a region where liquid crystal displays, indicator lights, etc. are arranged, For example, a dial lock refers to a dial operation unit provided with a plurality of dials for aligning an unlock code string.

  In a preferred embodiment of the present invention, the lid plate has a cylindrical portion at one end, and the shaft support holes are formed on both left and right sides of the partition wall formed at the central portion of the length in the cylindrical portion. The spring is interposed between the partition wall in each shaft support hole and the pivot, but the present invention is not limited to such a structure, and one spring is attached to the partition wall. It may be inserted into a non-cylindrical part and left and right pivots may be provided on both sides thereof.

  According to the present invention, when the opening angle of the lid plate is approximately 90 degrees, the opened state is maintained. When the opening angle exceeds 90 degrees, the cover plate is biased in the opening direction, and when the opening angle is smaller than 90 degrees, the opening direction is applied. Therefore, if the cover plate is opened 90 degrees or more, the open state of the cover plate is maintained even if the hand is released from the cover plate, and both hands can be freely used for the operation. Further, when the lid plate is closed, the lid plate is biased to be completely closed, so that the lid plate is prevented from being half-opened.

It is a perspective view which shows the state which opened the cover plate of the dial lock. It is a side view of the dial lock of the state which opened the cover plate. It is a front view of the dial lock of the state which closed the cover plate. It is a bottom view of the dial lock with the lid plate closed. It is the side view which carried out the cross section of a part of dial lock of the state which closed the cover plate. It is a perspective view which decomposes | disassembles and shows the front plate and cover plate of a dial lock. It is sectional drawing which shows the structure of a hinge mechanism. It is sectional drawing which follows the AA line of FIG. It is sectional drawing which follows the BB line of FIG. It is the figure which looked at the bearing hole from the front. It is a top view which shows the relationship between the pivot which rotates an axis with opening and closing of a cover plate, and a bearing hole. It is a side view which shows the state of the pivot pivoted with opening and closing of a cover board. It is a front view of the remote controller provided with the hinge type cover plate.

  1 to 4 show the appearance of the dial lock 1 in which the lid opening / closing mechanism 2 of the present invention is incorporated. FIGS. 1 and 2 show a state in which the lid plate 3 is opened, and FIGS. 3 and 4 show the lid plate. The state in which 3 is closed is shown respectively. The lid opening / closing mechanism 2 of the present invention has a region for operation or display, and has a structure in which one end portion of the lid plate covering the region is rotatably supported by a hinge mechanism. It can also be incorporated into devices and instruments other than locks.

  The illustrated dial lock 1 is attached to a door such as a locker, and a lock mechanism is incorporated in a hollow body 10 forming a rectangular parallelepiped, and an opening on the front surface of the body 10 as shown in FIG. 11 is provided with a front plate 7 made of synthetic resin. The front plate 7 is provided with a circular opening 70 and four rectangular window holes 71, dials 12 facing each of the window holes 71 and dials 12, respectively. The operation unit 14 is configured. Each dial 13 is operated to align or break the unlock code string during unlocking and locking. A screw shaft 15 that rotates integrally with the knob 12 protrudes from the rear surface of the body portion 10, and a hook (not shown) is attached to the screw shaft 15 with a nut. The hanging metal moves up and down integrally with the forward / reverse rotation of the screw shaft 15, and is engaged with and disengaged from a receiving metal attached to the housing such as a locker.

  The dial lock 1 has a storage mechanism for storing an unlocked code string. When the dial lock 1 is locked, when the plurality of dials 13 of the dial operation unit 14 are rotated to align the unlocked code strings, the unlocked state is obtained. Then, the knob 12 can be turned. The hanging bracket rotates integrally with the knob 12 and engages with the receiving bracket. Thereafter, when the unlocking code string is broken by rotating the dial 13, the locked state is obtained. In unlocking, the dial 13 is turned to align the unlock code strings, and the unlock state is established. When the knob 12 is turned to rotate the hanging bracket in the opposite direction, the engagement with the receiving bracket is released.

  On the dial operation unit 14 of the dial lock 1, a cover plate 3 made of synthetic resin for blindfold having a size capable of covering all the dials 13 is provided to be openable and closable. The cover plate 3 in the illustrated example covers only the four dials 13, but may have a structure covering both the four dials 13 and the knob 12. On the lower surface of the cover plate 3, a cylindrical portion 31 along the upper edge, a projecting edge portion 32 and a knob 33 along the lower edge, and a rib 34 that abuts between adjacent window holes 71, 71 of the front plate 12 are integrally formed. Has been. As shown in FIG. 7 and FIG. 8, the cylindrical portion 31 is hollow inside, has a partition wall 35 at the center of the length, and shaft support holes 36 a, which will be described later, on both sides of the partition wall 35. 36b is formed. The partition wall 35 constitutes the bottom of each shaft support hole 36a, 36b.

  The cover plate 3 is opened and closed by rotating around the both side ends of the cylindrical portion 31 and moving up and down in the front-rear direction. The both end portions of the cylindrical portion 31 are connected to the front surface via the hinge mechanism 4. It is supported by the plate 7. The hinge mechanism 4 may be configured to form a cylindrical portion at the lower end portion of the lid plate 3 and rotate with both side end portions as fulcrums, or at one end portion of the lid plate 3. You may comprise so that a cylindrical part may be formed and the upper and lower ends may be rotated as a fulcrum.

  The hinge mechanism 4 has a function of urging the cover plate 3 in a further opening direction when the opening angle θ of the cover plate 3 is larger than 90 degrees, and urging the cover plate 3 in a closing direction when the opening angle θ is smaller than 90 degrees. The left and right bearing portions 72a and 72b projecting at positions facing each other across all the dials 13 on the upper surface of the front plate 12 and the openings on both side ends of the cylindrical portion 31 of the cover plate 3. The left and right synthetic resin pivots 5a and 5b, which are respectively non-rotatable and slidably supported in the pivot support holes 36a and 36b, and the partition walls 35 and pivots 5a and 5b in the pivot support holes 36a and 36b. It comprises springs 6a and 6b interposed therebetween. As shown in FIG. 9, each of the shaft support holes 36a and 36b is a square hole having a square cross section in the radial direction. On the other hand, the base ends of the pivots 5a and 5b are angular axes having a cross-sectional shape that fits the square hole. It is part 51.

  The bearing portions 72a and 72b are integrally formed on the front plate 7, and are integrally formed with side edge frames 73a and 73b connected to the bearing portions 72a and 72b. As shown in FIG. 10, bottomed bearing holes 74 a and 74 b are formed at positions where the bearing portions 72 a and 72 b face each other, and the cylindrical portion 31 of the cover plate 3 is formed in each bearing hole 74 a and 74 b. The round shaft portion 52 at the tip of the pivot shafts 5a and 5b protruding from the opening end of the shaft is supported freely.

  As shown in FIGS. 7 and 8, the distal end portion of the round shaft portion 52 of each pivot 5a, 5b is formed in a tapered shape by tapered surfaces 53, 53 facing in opposite directions, and has a sharp pointed edge. Each taper surface 53, 53 has a skirt extending toward the shaft circumferential surface with 54 as a top. On the other hand, V-shaped grooves (hereinafter referred to as “V-grooves”) 75 are formed in the bottoms of the left and right bearing holes 74a and 74b, and when the cover plate 3 is closed, the round shaft portion is formed. The tapered surfaces 53 and 53 of 52 are in contact with the opposing groove wall of the V groove 75, and the pointed edge 54 is in contact with the groove bottom 76 of the V groove 75.

  According to the lid opening / closing mechanism 2 having the above-described configuration, when the lid plate 3 is in the closed state, the dial operation unit 14 is covered by the lid plate 3, so that the arrangement of the codes of the dials 13 cannot be visually recognized from the outside. When the cover plate 3 is in the closed state, the hinge mechanism 4 is provided with the left and right pivots 5a, 5b on the groove walls of the V grooves 75 at the bottoms of the left and right bearing holes 74a, 74b, as shown in FIG. The tapered surfaces 53 and 53 of the round shaft portion 52 are in contact with each other, and the pointed edge 54 of the round shaft portion 52 is in contact with the groove bottom portion 76 of the V groove 75 so that the closed state is maintained. FIG. 12A shows the directions of the tapered surfaces 53 and 53 and the pointed edge 54 of the round shaft portion 52 of the pivots 5a and 5b when the cover plate 3 is closed.

  When unlocking, when the handle 3 of the cover plate 3 is held open, the round shaft portions 52 of the left and right pivot shafts 5a and 5b pivot around the left and right bearing holes 74a and 74b, and the tip of the round shaft portion 52 is rotated. The edge 54 is pushed up along the groove wall of the V groove 75. When the opening angle θ of the cover plate 3 reaches approximately 90 degrees, the pointed edge 54 of the round shaft portion 52 is orthogonal to the groove bottom portion 76 of the V groove 75 as shown in FIGS. 11 (2) and 12 (2). Thus, the state is over the groove opening. In this state, the pivot shafts 5a and 5b compress the springs 6a and 6b and push them into the shaft support holes 36a and 36b. As a result of pressing the pointed edge 54 of the round shaft part 52 against the groove wall of the V groove 75, the state where the pointed edge 54 of the round shaft part 52 straddles the groove opening of the V groove 75 is maintained, and the cover plate 3 is opened. To be kept.

When the cover plate 3 is further opened and the opening angle θ of the cover plate 3 exceeds 90 degrees, the cover plate 3 is urged by the spring pressures of the springs 6a and 6b to open further, and each taper of the round shaft portion 52 is tapered. When the surfaces 53 and 53 come into contact with the V-grooves 75 of the bearing holes 74a and 74b, the cover plate 3 is in an open state of approximately 180 degrees. In this embodiment, as shown in FIG. 2, when the opening angle θ of the cover plate 3 reaches approximately 135 degrees, the cover plate 3 abuts against the front opening edge of the body portion 10 of the dial lock 1. Is kept open approximately 135 degrees.
11 (3) shows the relationship between the round shaft portion 52 of each pivot 5a, 5b and the V groove 75 when the cover plate 3 is opened 135 degrees, and FIG. 12 (3) shows the round shaft portion. The directions of the tapered surfaces 53, 53 and the tip edge 54 of 52 are shown.

  As described above, when the opening angle θ of the lid plate 3 is 90 degrees, the lid plate 3 is held in an opened state of 90 degrees, and when the opening angle θ exceeds 90 degrees, the lid plate 3 is 135 degrees. Since it is held in the open state, the dial can be operated by releasing the hand from the cover plate 3. When the dials 13 are rotated to align the unlock code strings, the dial lock 1 is unlocked, and the knob 12 is turned to rotate the screw shaft 15 to remove the hook from the bracket.

At the time of locking, the knob 12 is turned with the unlocked code strings aligned, the screw shaft 15 is rotated, and the hook 13 is engaged with the metal fitting, and then the dial 13 is rotated to unlock the code string. When the dial is broken, the dial lock 1 is locked.
Thereafter, the cover plate 3 is closed with the knob 33 of the cover plate 3, but when the opening angle θ of the cover plate 3 is smaller than 90 degrees, the cover plate 3 is biased in the closing direction by the spring pressure of the springs 6 a and 6 b. When the tapered surfaces 53, 53 of the round shaft portion 52 abut against the groove wall of the V groove 75 of the bearing holes 74 a, 74 b and the pointed edge 54 abuts against the groove bottom 76 of the V groove 75, the cover plate 3 is stable in a completely closed state.

DESCRIPTION OF SYMBOLS 1 Dial lock 2 Cover opening / closing mechanism 3 Cover plate 4 Hinge mechanism 5a, 5b Pivot 6a, 6b Spring 14 Dial operation part 52 Round shaft part 53 Tapered surface 72a, 72b Bearing part 74a, 74b Bearing hole 75 V-shaped groove

Claims (3)

  In a lid opening / closing mechanism in which one end of a lid plate covering a region for operation or display is rotatably supported by a hinge mechanism, the hinge mechanism is a pair of bearings provided at positions facing each other across the region A pair of left and right pivots that are non-rotatable and slidably supported in shaft support holes that open to positions that serve as fulcrums at both ends of the cover plate, and the pivots that are disposed in the shaft support holes. It consists of a spring that urges toward the opening, and each pivot has a round shaft that protrudes from the opening of the shaft support hole, and the round shaft is tapered with a tapered surface facing the opposite side. The left and right bearing portions each have a bottomed bearing hole that freely supports the round shaft portion of each pivot, and the round shaft is in a state where the cover plate is closed at the bottom of each bearing hole. A lid opening / closing mechanism formed with a V-shaped groove with which each tapered surface of the portion abuts.   The lid opening / closing mechanism according to claim 1, wherein the region for operation or display is a dial operation unit provided with a plurality of dials in a dial lock.   The lid plate has a cylindrical portion at one end, and the shaft support holes are formed on both the left and right sides of the partition wall formed at the central portion of the length in the cylindrical portion. The lid opening / closing mechanism according to claim 1, wherein the springs are interposed between the partition wall and the pivot.

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