JP5731231B2 - hinge - Google Patents

Description

  The present invention relates to a hinge that supports a door in a rotatable manner.

  2. Description of the Related Art Conventionally, a hinge element that can be attached to a door and a hinge element that can be attached to an opening edge (for example, a door frame) of an opening that is opened and closed by the door are provided, and one hinge element attached to the door is connected to the other hinge. A hinge is known that supports a door so that it can be opened and closed by rotating it relative to the element. In particular, when the door in the open position is rotated in the closing direction, a hinge that can automatically move the door to the closed position due to the appropriate cam structure and spring action and the weight of the door itself has been developed. Have been put into practical use (for example, Patent Documents 1, 2, and 3).

  Each of these patent documents discloses a mode in which a cam pin is engaged with a cam groove that is set to have a shape in which a cam groove that can be engaged with a cam pin is inclined in only one direction. By adopting such a cam structure, the door is rotated in the closing direction from the open position where the cam pin is engaged to the highest position in the cam groove, and the cam groove is engaged while the cam pin is engaged with the cam groove. By moving toward the lowest position, the door can be automatically moved to the closed position.

Japanese Patent No. 3485383 Japanese Utility Model Publication No. 7-19554 Japanese Utility Model Publication No.59-179978

  However, since the cam groove having a shape inclined in only one direction is applied, when the door is moved from the closed position to the open position, the cam pin engaged with the lowest position in the cam groove. However, the operation force for rotating the door to the point where the cam groove reaches the highest position must be continuously applied, and the door cannot be automatically moved to the open position. If the shape as described above is set to the closed position with the cam pin engaged with the highest position in the cam groove, the cam pin is moved toward the lowest position in the cam groove. By doing so, the door can be automatically moved to the open position, but the door cannot be automatically moved from the open position to the closed position.

  The present invention has been made paying attention to such a problem, and a main object is to use a cam structure using a cam groove and a cam pin, and to open a door to which one hinge element is attached from a closed position. A hinge that can be automatically moved to the opening position if it is rotated by a predetermined angle in the opening direction, and can be automatically moved to the closing position if the door in the opening position is rotated by a predetermined angle in the closing direction. Is to provide.

  That is, the present invention relates to a hinge that is interposed between a door that can be opened and closed while rotating the opening and the edge of the opening, and supports the door rotatably. In addition, the “edge portion of the opening” (opening edge) is a portion that can partition the space in the opening from other spaces, and in an aspect in which the opening is formed (secured) in a part of the wall of the building, The wall itself may correspond to an “opening edge”, or the door frame attached to the wall may correspond to an “opening edge”.

  The hinge which concerns on this invention inserts the 1st hinge element which has a 1st axis | shaft cylinder, the 2nd hinge element which has a 2nd axis cylinder, and one end part side area | region into a 1st axis | shaft cylinder so that rotation is not possible, and the other end A shaft that is rotatably inserted in the second axial cylinder and coaxially arranges the axial cylinders, and is accommodated in the second axial cylinder so as to be movable up and down in the axial direction in a non-rotatable state; A cylindrical cam member having a cam groove engageable with a cam pin provided in the other end side region of the shaft, and a compression spring accommodated in the second shaft cylinder are provided.

  Here, one of the first hinge element and the second hinge element is attached to the door, and the other is attached to the opening edge. Also, any shaft cylinder may be disposed relatively on the upper side in a state where the first shaft cylinder and the second shaft cylinder are coaxially disposed via the shaft. That is, the one end side region of the shaft may be either the upper end side region or the lower end side region.

And the hinge which concerns on this invention is extended | stretched from one end of the inclination switching area | region which is an area | region closest to the 1st axis cylinder among cam grooves as a cam groove, and is gradually separated from a 1st axis cylinder. A first inclined region inclined in a direction, and a second inclined region extending from the other end of the inclination switching region in a direction different from the first inclined region and inclined in a direction gradually separating from the first shaft cylinder. When the cam pin moves in the first inclined area of the cam groove toward the inclination switching area and when the cam pin moves in the second inclination area of the cam groove toward the inclination switching area, the second is applied. A cylindrical cam member that moves in a direction away from the first shaft cylinder in the shaft cylinder is configured to press the compression spring in the compression direction, and either the first hinge element or the second hinge element is attached to the hinge element. Install the door and open the other hinge element In a state where it is attached to the edge portion, by rotating the door in the closed position by a predetermined angle in the opening direction, the cam pin in the second shaft cylinder is one of the first inclined region and the second inclined region of the cam groove. It moves toward the inclination switching area while being guided by the inclination area, enters the other inclination area beyond the inclination switching area, and the cam pin separates the other inclination area from the inclination switching area by the restoring force of the compression spring. The door automatically moves to the open position by moving in the direction, and the cam pin in the second shaft cylinder is inclined to the other inclined region of the cam groove by rotating the door in the open position by a predetermined angle in the close direction. Moving toward the tilt switching area while being guided by the guide, entering one of the tilt areas beyond the tilt switching area, and the cam pin is moved by the restoring force of the compression spring By moving in a direction away oblique area from the slope switching area, the door is characterized by being configured to move automatically to the closed position.

  Here, the “inclination switching area” may be an area in which the cam pin is set to a shape that can be stopped in the area, or a shape in which the cam pin cannot be stopped in the area, that is, the first inclination area or the second inclination area. An area set in such a shape that the cam pin that has reached the inclination switching area from one of them can immediately move to the other inclination area may be used.

  And if it is the hinge of this invention, when a 1st hinge element is rotated in the predetermined direction (this direction is made into a forward direction) with respect to a 2nd hinge element, a shaft will be a 2nd cylinder with a 1st hinge element. The cam pin moves toward the tilt switching region while being guided by either the first tilt region or the second tilt region of the cam groove (for example, the first tilt region) in the second shaft cylinder. To do. At this time, since the shaft is restricted from moving toward the first shaft cylinder, the cylindrical cam member moves in a direction away from the first shaft cylinder in the second shaft cylinder. Then, the compression spring is pressed in the compression direction by the cylindrical cam member. Then, when the cam pin reaches the inclination switching area and directly enters the other inclination area (for example, the second inclination area) beyond the inclination switching area, the action (restoring force) of the compression spring that tries to return to the pushed force. Thus, the cam pin automatically moves in the direction away from the tilt switching region in the tilt region (for example, the second tilt region).

  Here, the state before the first hinge element is rotated in the forward direction with respect to the second hinge element is defined as the first state, and in this first state, the first hinge element is rotated in the forward direction with respect to the second hinge element. If the state after the cam pin is automatically moved from the first inclined region to the second inclined region beyond the inclined switching region is the second state, the hinge according to the present invention is the first hinge element in the first state. It is possible to automatically shift to the second state by applying an operating force that rotates the lens in the positive direction by a predetermined angle.

  Further, when the first hinge element is rotated in the reverse direction with respect to the second hinge element in the second state, the shaft rotates with respect to the second shaft cylinder together with the first hinge element, so that The cam pin moves toward the inclination switching area while being guided by the second inclination area of the cam groove. At this time, since the shaft is restricted from moving toward the first shaft cylinder, the cylindrical cam member moves in a direction away from the first shaft cylinder in the second shaft cylinder. Then, the compression spring is pressed in the compression direction by the cylindrical cam member. When the cam pin reaches the inclination switching area and enters the first inclination area beyond the inclination switching area, the cam pin automatically moves the inclination area away from the inclination switching area by the restoring force of the compression spring. Moving. As a result, the hinge automatically moves to the first state by applying an operating force that rotates the first hinge element in the reverse direction by a predetermined angle in the second state.

  Thus, since the hinge which concerns on this invention forms what formed two inclination area | regions inclined in the mutually different direction as an inclination area | region as a cam groove, one hinge attached to a door is applied. If the door is attached to the element and the other hinge element is attached to the opening edge, the door in the closed position can be automatically moved to the open position if it is rotated by a predetermined angle in the open direction, and is in the open position. If the door is rotated by a predetermined angle in the closing direction, it can be automatically moved to the closing position.

  In addition, with the hinge of the present invention, the cam groove and the cam pin are adjusted so that the inclination angle of each inclined region and the frictional force between the cam groove and the cam pin generated when the cam pin traces each inclined region have appropriate values. By adjusting the shape, it provides a good damper function when performing automatic opening and closing operations, making the structure more complex and costly compared to a mode in which a cassette type damper is installed at an appropriate location on the hinge. Can be avoided, and is excellent in practicality.

  In the hinge of the present invention, a cylindrical cam member having a single cam groove may be applied, but a cylindrical cam member in which a plurality of cam grooves are formed and a cam groove as a shaft are applied. It is also possible to apply one having the same number of cam pins. With such a structure, it is possible to disperse the load acting on each cam pin and prevent / suppress the situation where an excessive load acts on the cam pin intensively and bites into the cam groove inadvertently. Can do.

  Furthermore, in the hinge of the present invention, when a plurality of cam grooves are formed in the cylindrical cam member, a plurality of cam grooves are formed in the same phase if the plurality of cam grooves are formed at different positions in the circumferential direction of the cylindrical cam member. Compared with the case where the cam groove is formed, the load that the cylindrical cam member receives from the cam groove can be more effectively dispersed.

  According to the present invention, the cam groove has a substantially mountain-folded shape continuously including an inclination switching area and two inclination areas having different inclination directions starting from a connection point of the inclination switching area. By applying, the door with one hinge element can be automatically moved to the open position if it is rotated by a predetermined angle in the open direction from the closed position, and the door in the open position is predetermined in the open direction. A hinge that can be automatically moved to the closed position when rotated by an angle can be provided.

1 is an overall schematic diagram of a door system to which a hinge according to an embodiment of the present invention is applied. The plane schematic diagram of the door system which concerns on the embodiment. FIG. 3 is a view corresponding to FIG. 2 in a state where the door is in the open position in the door system. The decomposition | disassembly schematic of the hinge concerning this embodiment. The top view of the 1st hinge element of the hinge. The front view of the 1st hinge element. The top view of the 2nd hinge element of the hinge. The front view of the 2nd hinge element. The front view of the shaft of the hinge. FIG. 10 is a view in the Y direction of FIG. 9. The fragmentary sectional view of the shaft seen from the angle different from FIG. The front view of the bearing of the hinge. FIG. 13 is a view in the Y direction of FIG. Action | operation explanatory drawing which shows a part of the hinge in cross section. The figure which shows in part the state which the cylindrical cam member of the same hinge expand | deployed. Action | operation explanatory drawing of the hinge. Action | operation explanatory drawing of the hinge. Action | operation explanatory drawing of the hinge. FIG. 3 is a view corresponding to FIG. 3 of a door system to which a modification of a hinge according to the embodiment is applied.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  The hinge 100 according to the present embodiment is applicable to a door D (rotary door) that can be opened and closed while rotating an opening S communicating with an indoor space and an outdoor space, for example. In the present embodiment, as shown in FIG. 1, a door frame W is provided around the opening S, and this door frame W can partition the space in the opening S from other spaces. Corresponds to the "edge of" (opening edge).

  As shown in FIGS. 2 and 3, the door D has a closed position (C) in which one side edge portion is a hanging base side and can be fitted to the opening S to close the opening S, and the opening. It moves while rotating between the open position (O) where S is opened. In this embodiment, the position where the opening angle of the door D with respect to the opening S is approximately 180 degrees is set as the opening position (O).

  And the hinge 100 which concerns on this embodiment supports the door D so that rotation operation | movement is possible, and makes the door D in the middle position between an open position (O) and a closed position (C) predetermined with respect to the opening part S. The opening angle is energized in either the opening direction or the closing direction. 1 to 3, in addition to the hinge 100, the door catcher 200 that holds the door D in the open position (O), the door damper 300 that can absorb an impact (impact sound) when the door D is closed, and the door D are closed. The door system X provided with the latch mechanism 400 hold | maintained in a formation position (C) is shown.

  In this embodiment, the door catcher 200, the door damper 300, and the latch mechanism 400 are applied with known ones, and will be briefly described below.

  As shown in FIGS. 1 to 3, the door catcher 200 includes a door catcher main body 201 fixed to the floor surface and a lock pin 203 fixed to the door D, and the door D reaches the open position (O). At this time, the door D is automatically held at the open position (O) by restraining the lock pin 203 with the door catcher body 201.

  As shown in FIGS. 2 and 3, the door damper 300 is attached to the door D and exhibits a damper function from a predetermined time before reaching the closed position (C) to a time when reaching the closed position (C). A damper main body 301 and a receiving seat 303 attached to the door frame W are provided. In this embodiment, the damper body 301 is provided with a body portion 305 having a built-in hydraulic damper and a retractable arm 307 that can be rotated while receiving a predetermined resistance force against the body portion 305. doing. The pull-in arm 307 is formed with a guide groove 311 that is guided by the shaft-like protrusion 309 of the receiving seat 303. When the door D is moved from the open position (O) toward the closed position (C) and the opening angle of the door D with respect to the opening S reaches a predetermined value (10 degrees in this embodiment), the guide As the shaft-shaped protrusion 309 of the seat 303 enters the groove 305, and the door D moves in the closing direction, the entire retractable arm 307 increases the degree of entry of the shaft protrusion 309 into the guide groove 305. However, the damper body 301 rotates while receiving a predetermined resistance against the main body portion 305. As a result, the door damper 300 exhibits an appropriate damper function during the closing operation of the door D, and decelerates the door D in the closing direction to reach the closing position (C). Sound) and the guide groove 305 guides the shaft-shaped protrusion 309, so that the entire door D can be properly pulled to the closed position (C).

  The latch mechanism 400 includes a latch claw 401 capable of projecting and retracting in the width direction of the door D at a predetermined height position of the side edge on the side opposite to the suspension side, and a side edge on the side opposite to the suspension side of the opening S ( A latch hole 403 formed in the side edge W1) of the door frame W, and a protruding state in which the latch claw 401 protrudes in the width direction of the door D from the side edge of the door D; The latch claw 401 in the projecting state is engaged with the latch hole 403 by changing between the retracted state retracted to the center side in the width direction of the door D rather than the portion, and the door D is brought into the closed position (C). (See FIG. 2). In the present embodiment, the latch claw 401 is set so as to always protrude by appropriate biasing means (not shown) such as a spring (see FIGS. 1 to 3).

  The latch mechanism 400 is configured such that when the door D that is not in the closed position (C) moves in the closing direction, the latch claw 401 that has been in the protruding state just before reaching the closed position (C) The side edge of the door frame W when the door D reaches the closed position (C) by temporarily immersing in the width direction of the door D by hitting the side edge on the anti-hanging side of W. The latch claw 401 from which the interference with W1 has been eliminated becomes a protruding state and engages with the latch hole 403, whereby the door D can be held in the closed position (C). The latch claw 101 can be switched between the protruding state and the retracted state by operating the knob N provided on the door D.

  And the hinge 100 which concerns on this embodiment is the 2nd hinge attached to the door frame W which has the opening part S which can be opened and closed by the 1st hinge element 101 attached to the door D, and the door D, as shown in FIG. And an element 103. In the present embodiment, the first hinge element 101 is an upper hinge element that is disposed relatively above the second hinge element 103, and the lower hinge element that is disposed relatively below the second hinge element 103. It is said.

  As shown in FIGS. 4 to 6 (FIGS. 5 and 6 are a plan view and a front view of the first hinge element 101, respectively), the first hinge element 101 includes a first blade plate 105 and a first blade plate. A first shaft cylinder 107 formed on one side edge portion of 105, and a screw inserted into a screw mounting hole 109 formed at a predetermined location (near the four corners in the illustrated example) of the first blade plate 105 is a door. It can be fixed to the door D by being screwed into a screw hole formed in D. An upper cap 111 is detachably attached to the upper end portion of the first shaft cylinder 107.

  As shown in FIGS. 4, 7 and 8 (FIGS. 7 and 8 are a plan view and a front view of the second hinge element 103, respectively), the second hinge element 103 includes a second blade 113, A second shaft cylinder 115 formed on one side edge of the two blades 113, and a screw mounting hole 117 formed at a predetermined location (a location near the four corners and the central portion in the illustrated example) of the second blade 113. The screw inserted into the door frame W can be fixed to the door frame W by being screwed into a screw hole formed in the door frame W. A lower cap 119 is detachably attached to the lower end of the second shaft cylinder 115.

  In addition to these hinge elements (the first hinge element 101 and the second hinge element 103), the hinge 100 according to the present embodiment inserts the upper end side region into the first shaft tube 107 in a non-rotatable manner and the lower end side. A region 121 is rotatably inserted into the second shaft cylinder 115, and the shaft 121 (the first shaft cylinder 107 and the second shaft cylinder 115) is coaxially disposed between the shaft 121 and the second shaft cylinder 115. A cylindrical cam member 123 accommodated so as to be movable up and down in the axial direction A in a non-rotatable state and a compression spring 125 accommodated in the second axial cylinder 115 are provided.

  As shown in FIG. 4, the shaft 121 is provided with a cam pin 127 integrally or integrally in a substantially columnar lower end side region to be inserted into the second shaft cylinder 115. The number and formation locations of the cam pins 127 correspond to the number and formation locations of cam grooves 129 described later. In the present embodiment, a pair of cam pins 127 are provided in a portion of the shaft 121 whose phases are different by a predetermined angle (approximately 180 degrees in the illustrated example) in the circumferential direction, and these cam pins 127 are arranged in the axial direction A (height of the shaft 121. In the direction). Further, as shown in FIGS. 9 and 10 (FIG. 9 is a front view of the shaft 121 and FIG. 10 is a view taken in the direction of the arrow Y in FIG. 9), in the vicinity of the central portion in the height direction of the shaft 121, A ball bearing holding portion 133 that rotatably holds a ball bearing 131 described later is provided. A flat portion 135 extending along the axial direction A is formed on a part of the outer peripheral surface of the upper end side region of the shaft 121. As shown in FIG. 11, as the shaft 121, a screw hole 122 that opens to the end surface of the upper end portion, and a ball holding hole 124 that communicates with the tip end portion of the screw hole 122 and opens to the outer peripheral surface of the shaft 121. What you have can be applied. In this case, by changing the screwing degree (entrance distance) of the hexagon socket set screw 128 (enamel set) to the screw hole 122 in a state where the ball 126 is accommodated in the ball holding hole 124, the outer peripheral surface of the shaft 121 is changed. The protruding state of the ball 126 can be adjusted. In the present embodiment, such an upper end side region of the shaft 121 is inserted into a bearing 137 provided in the first shaft cylinder 107 so as not to rotate. When the upper end side region of the shaft 121 is inserted into the bearing 137, the protrusion amount of the ball 126 with respect to the outer peripheral surface of the shaft 121 is set to zero or substantially zero or less, and the upper end side region of the shaft 121 is set to the bearing 137. After that, the degree of screwing (entrance distance) of the hexagon socket set screw 128 (hollow set) with respect to the screw hole 122 is adjusted using a tool such as a hexagon wrench, and the ball 126 against the outer peripheral surface of the shaft 121 is adjusted. The protrusion 126 is increased and the ball 126 is pressed against the inner peripheral surface of the bearing 137 (not shown). As a result, the first shaft cylinder 107 and the second shaft cylinder 115 can be firmly and coaxially connected via the shaft 121. Further, the door 126 is opened and closed by directly or indirectly contacting the ball 126 with the inner peripheral surface of the first shaft cylinder 107 (in the present embodiment, indirectly through the inner peripheral surface of the bearing 137). When the first shaft cylinder 107 and the second shaft cylinder 115 are rotated relative to each other, a sound that can reverberate in the shaft cylinders 107 and 115 due to the operation of the spring 125 and the cam mechanism (cam pin 127 and cam groove 129) is generated. Can be prevented / suppressed.

  As shown in FIGS. 4, 12, and 13 (FIG. 12 is a front view of the bearing 137, and FIG. 13 is a view taken in the direction of the arrow Y in FIG. 12), the bearing 137 has a substantially cylindrical shape. An engaging ridge 111 that can engage with a slide groove 139 extending in the axial direction A formed on the inner peripheral surface of the first shaft cylinder 107 is formed on a part of the surface, and on a part of the inner peripheral surface, The flat part 113 corresponding to the cross-sectional shape of the upper end part side area | region of the shaft 121 is formed. Then, by engaging the engaging protrusion 111 with the slide groove 139 of the first shaft cylinder 107, the bearing 137 cannot rotate with respect to the first shaft cylinder 107. Further, by inserting the upper end side region of the shaft 121 into the bearing 137 so that the flat portion 135 of the shaft 121 can face the flat portion 113 of the bearing 137, the bearing 137 holds the shaft 121 in a non-rotatable manner. Can do.

  In addition, at the time before the upper end side region of the shaft 121 is inserted into the bearing 137, a ball bearing holding body 145 (see FIG. 4) which is a separate body from the shaft 121, and a ball bearing holding portion 133 of the shaft 121, During this time, a large number of ball bearings 131 are held in a rotatable state. Then, with the washer 116 fixed to the upper end opening in the second shaft cylinder 115, the shaft 121 is inserted from the lower end opening of the second shaft cylinder 115 to which the lower cap 119 is not attached. By passing the region through the inner hole of the washer 116, the shaft 121 is in a state where the lower end side region is accommodated in the second shaft cylinder 115 and the upper end side region is exposed outside the second shaft cylinder 115. In this state, a ring-shaped bush 147 having the same outer diameter as each shaft cylinder (the first shaft cylinder 107 and the second shaft cylinder 115) is dropped downward from the upper end of the shaft 121, and the upper end of the second shaft cylinder 115 is dropped. It arrange | positions in the position which contact | abuts or adjoins to the opening part or washer 116. FIG. When the upper end side region of the shaft 121 is inserted into the bearing 137 in this state, the ring-shaped bush 147 contacts the lower end opening of the first shaft cylinder 107 or the lower end opening of the bearing 137 as shown in FIG. Or close. The washer 116 can reduce the frictional resistance generated when the first hinge element 101 and the second hinge element 103 are rotated relative to each other about the shaft 121. FIG. 14 is a diagram schematically showing a state in which the first blade 105 of the first hinge element 101 and the second blade 113 of the second hinge element 103 substantially overlap each other in a plan view. .

  As shown in FIG. 4, the cylindrical cam member 123 has a substantially cylindrical shape, and can be engaged with a slide groove 147 extending in the axial direction A formed on the inner peripheral surface of the second shaft cylinder 115 on the outer peripheral surface. The engaging protrusion 149 is provided. The cylindrical cam member 123 has a cam groove 129 having a predetermined shape. The cam groove 129 is a position closest to the first shaft tube 107 side in the cam groove 129 (in this embodiment, the cam groove 129 is a cam) as shown in FIG. An inclination switching region 151 formed at the highest position in the groove 129, and extends from the inclination switching region 151 in one direction (forward direction) along the circumferential direction of the cylindrical cam member 123, and gradually from the first shaft cylinder 107. A first inclined region 153 inclined in a direction of separating (downward in the present embodiment), and extending in the other direction (reverse direction) along the circumferential direction of the cylindrical cam member 123 from the inclination switching region 151, It has a substantially downward V-shape having a second inclined region 155 inclined in a direction gradually separating from the shaft tube 107. In the present embodiment, as the inclination switching area 151, the cam pin 127 that has reached the inclination switching area 151 from either the first inclination area 153 or the second inclination area 155 can immediately move to the other inclination area. The shape set is applied. Therefore, the inclination switching area 151 determines whether the cam pin 127 automatically passes the first inclination area 153 or the cam pin 127 automatically passes the second inclination area 155 in the cam groove 129 ( Functions as a branching point). Moreover, in this embodiment, it sets so that the shape of the 1st inclination area | region 153 and the 2nd inclination area | region 155 may be made into object by the inclination switching area | region 151 as a boundary.

  Further, in the present embodiment, the cam groove 129 is a direction in which the cam groove 129 is farther away from the first shaft tube 107 than the first tilted region 153 from a position farthest from the first shaft tube 107 in the first inclined region 153. The first steep slope region 157 inclined to the second tilt region 155 is formed at a steepest slope from the second tilt region 155 from the position farthest away from the first shaft tube 107 in the second tilt region 155. A structure in which a second steep slope region 159 that is inclined in the direction of separating is formed is applied. In the hinge 100 according to this embodiment, such a cam groove 129 is formed in the cylindrical cam member 123 at a location where the phase is varied by a predetermined angle (approximately 180 degrees in the illustrated example) in the circumferential direction. In particular, in this embodiment, the pair of cam grooves 129 are formed stepwise along the axial direction A. Note that the engaging protrusion 149 extending in the height direction on the outer peripheral surface of the cylindrical cam member 123 is partially cut by a cam groove 129 (see FIG. 4). In the present embodiment, the pair of engaging ridges 149 are formed at positions that are 180 degrees out of phase on the outer peripheral surface of the cylindrical cam member 123, and are formed by the cam grooves 129 in the respective engaging ridges 149. The formation location of the cam groove 129 is set so that there is one cut location.

  As a mode in which the cam pin 127 is engaged with the cam groove 129 and the cylindrical cam member 123 and the shaft 121 are assembled to each other, the cam pin 127 is screwed into the cam pin mounting screw hole 161 formed in the cylindrical cam member 123. Before joining, the lower end side region of the shaft 121 is inserted into the cylindrical cam member 123, and the cam pin 127 is inserted into the cam pin mounting screw hole 161 at a position where the cam groove 129 and the cam pin mounting screw hole 161 communicate with each other. For example, the cam pin 127 may be fixed by welding or the like at a predetermined position of the cylindrical cam member 123 after being screwed and attached, or after one end side region of the shaft 121 is inserted into the cylindrical cam member 123.

  As shown in FIGS. 4 and 14, the compression spring 125 is accommodated in the second shaft cylinder 115 so that the shaft 121 having the lower end side region inserted into the second shaft cylinder 115 can be pressed from the lower end. It is. Then, the compression spring accommodated in the second shaft cylinder 115 is changed by changing the screwing degree (entrance distance) of the compression amount adjusting screw 163 screwed into the region near the lower end opening of the second shaft cylinder 115. The total compression amount of 125 can be adjusted. In this embodiment, a washer 165 is interposed between the compression spring 125 and the compression amount adjusting screw 163.

  Next, the operation and action of the hinge 100 having such a configuration will be described.

  In this embodiment, when the door D is in the closed position (C), the cam pin 127 of the shaft 121 is positioned in the first steep slope region 157 of the cam groove 129, and the door D is in the open position (O). In addition, the cam pin 127 of the shaft 121 is set so as to be positioned in the second steep slope region 159 of the cam groove 129 (see FIGS. 14 and 15. In FIG. 15, the cam pin 127 itself and its movement locus are represented by a two-dot chain line. ).

  First, when an operation force for rotating the door D in the closed position (C) in the opening direction is applied, the first hinge element 101 fixed to the door D is applied to the second hinge element 103 fixed to the door frame W. The shaft 121 that rotates integrally with the first shaft cylinder 107 rotates with respect to the second shaft cylinder 115 along with this rotation operation. Here, since the upper end portion of the shaft 121 is held in a non-rotatable manner in a bearing 137 provided in the first shaft cylinder 107 so as not to rotate, the shaft 121 is integrated with the first shaft cylinder 107 into the second shaft cylinder 115. Rotate against. When the shaft 121 rotates with respect to the second shaft cylinder 115 together with the first shaft cylinder 107, the cam pin 127 provided in the lower end side region of the shaft 121 causes the first steep slope region 157 and the first slope region 153 in the cam groove 129. And moving toward the inclination switching area 151 in order. Since the shaft 121 itself is restricted from moving upward (moving toward the first shaft cylinder 107) by the ring-shaped bush 147 in the second shaft cylinder 115, the cam pin 127 of the shaft 121 moves toward the tilt switching region 151. The cylindrical cam member 123 descends against the spring force of the compression spring 125 by moving the one inclined region 153. Therefore, the compression amount of the compression spring 125 increases as the cam pin 127 that moves in the first inclined region 153 toward the inclination switching region 151 approaches the inclination switching region 151. As shown in FIG. 16, the compression amount of the compression spring 125 is maximized when the cam pin 127 reaches the inclination switching area 151 from the first inclination area 153. Next, when the cam pin 127 passes (becomes) the inclination switching area 151, the cam pin 127 moves in a direction away from the inclination switching area 151 while following the second inclination area 155. At this time, since the cylindrical cam member 123 is pushed up by the elastic restoring force (restoring force) of the compression spring 125, the cam pin 127 remains in the first position even when the user stops or weakens the operating force that rotates the door D in the opening direction. The two inclined areas 155 are moved smoothly and automatically. When the cam pin 127 moves in the second inclined region 155 toward the second steep region 159 by the restoring force of the compression spring 125 and the weight of the door D and reaches the second steep region 159, the door D is automatically Thus, the open position (O) is obtained (see FIGS. 17 and 18). FIG. 17 is a view corresponding to FIG. 16 when the cam pin 127 reaches the second steep slope region 159, and FIG. 18 shows the simultaneous point as viewed from the opposite side (the back side of the drawing in FIG. 17). It is a figure.

  On the other hand, when an operating force is applied to rotate the door D in the open position (O) in the closing direction, the first hinge element 101 rotates with respect to the second hinge element 103, and the shaft 121 moves along with this rotation. It rotates with respect to the second shaft cylinder 115. At this time, the cam pin 127 of the shaft 121 moves toward the inclination switching area 151 while sequentially following the second steep slope portion 159 and the second inclination area 155. The cam pin 127 of the shaft 121 that is restricted from moving upward (moving toward the first shaft tube 107) in the second shaft tube 115 moves in the second tilt region 155 toward the tilt switching region 151. The cam member 123 descends against the spring force of the compression spring 125. When the cam pin 127 reaches the inclination switching area 151 from the second inclination area 155, the compression amount of the compression spring 125 becomes maximum (see FIG. 16), and when the cam pin 127 passes (becomes) the inclination switching area 151. Thus, the cam pin 127 moves in a direction away from the inclination switching area 151 while following the first inclination area 153. At this time, since the cylindrical cam member 123 is pushed up by the elastic restoring force (restoring force) of the compression spring 125, the cam pin 127 does not move even if the user stops or weakens the operating force that rotates the door D in the closing direction. The first inclined area 153 is moved smoothly and automatically. Then, when the cam pin 127 moves through the first inclined area 153 toward the first steep slope area 157 by the restoring force of the compression spring 125 and the weight of the door D and reaches the first steep slope area 157, the door D is automatically Thus, the closed position (C) is obtained (see FIG. 14).

  In addition, the hinge 100 of this embodiment sets the shape of the cam groove 129 so that the door D can be rotated approximately 180 degrees. Specifically, as shown in FIG. 15, when the door D in the closed position (C) rotates 15 degrees in the opening direction, the cam pin 127 moves from the first steep slope area 157 to the first slope area as shown in FIG. The condition that the door D at the closed position (C) is opened, and the door D at the closed position (C) is opened when the door D at the closed position (C) rotates 100 degrees in the opening direction. When the door D in the open position (O) rotates 15 degrees in the closing direction, the cam pin 127 is moved from the second steep slope area 159 to the second position. When the door D in the open position (O) rotates 100 degrees in the closing direction, the cam pin 127 reaches the tilt switching area 151, and the open position (O). Door D has set conditions, the shape of the cam groove 129 so as to satisfy these conditions that reaches the first steep region 157 rotates 185 degrees in the closing direction that. Further, in the present embodiment, the inclination angle and distance of each inclined region (first inclined region 153, second inclined region 155), or so as to perform an appropriate damper function when performing the automatic closing operation and the automatic opening operation, or The cam pin diameter or the like with respect to the opening dimension of the cam groove 129 is set to an appropriate value.

  By supporting the door D so as to be rotatable by the hinge 100 described above, the user closes the door D while the door D is in the middle position between the closed position (C) and the open position (O). When the operating force for moving in either the forming direction or the opening direction is stopped or the operating force is weakened, the door D is closed in accordance with the opening angle of the door D with respect to the opening S of the door frame W or A force for urging in any one of the opening directions can be applied.

  Specifically, as shown in FIG. 3, when the operation force that moves the door D in either the closing direction or the opening direction is stopped or when the operation force is weakened, the door D moves toward the opening S. If the opening angle θ is less than 100 degrees, that is, if the cam pin 127 of the hinge 100 is tracing the first inclined region 153, the cam pin 127 is moved from the first inclined region 153 to the first steep region 153 by the restoring force of the compression spring 125. Moving toward the gradient area 157, the door D can be urged in the closing direction. In the present embodiment, the door damper 300 starts to act when the opening angle θ of the door D with respect to the opening S reaches a predetermined angle (for example, 10 degrees). Specifically, when the opening angle θ of the door D with respect to the opening S reaches a predetermined angle (for example, 10 degrees), the guide groove 305 of the retractable arm 307 hits the shaft-like protrusion 309 of the seat 303 (FIG. 3). As the door D moves in the closing direction, the shaft-like protrusion 309 is guided to the back of the guide groove 305 (rotation center side of the retracting arm 307) as it is, and the entire retracting arm 307 is the main body. It rotates with respect to the main body 305 while receiving a predetermined resistance force by a hydraulic damper mechanism built in 305. Accordingly, the door system X according to the present embodiment can prevent and suppress the generation of impact sound by slowly rotating the door D from a predetermined time point approaching the closed position (C) by the damper function of the door damper 300. In addition, the door D can be reliably pulled to the closed position (C). When the door D reaches the closed position (C), the latch claw 401 and the latch hole 403 of the latch mechanism 400 are engaged with each other to automatically hold the door D in the closed position (C). (See FIG. 2).

  On the other hand, when the operation force that moves the door D in either the closing direction or the opening direction is stopped or the operation force is weakened, the opening angle θ of the door D with respect to the opening S exceeds 100 degrees. If the cam pin 127 of the hinge 100 is tracing the second inclined region 155, the cam pin 127 moves from the second inclined region 155 toward the second steeply inclined region 159 by the restoring force of the compression spring 125. Thus, the door D can be urged in the opening direction. When the door D reaches the open position (O), the lock pin 203 of the door catcher 200 and the door catcher main body 201 are engaged with each other to automatically hold the door D in the closed position (C). can do.

  As described above, the hinge 100 according to the present embodiment employs a cam groove 129 having a substantially inverted V shape (mountain fold shape) with the inclination switching region 151 as a vertex, and the cam pin 127 is the first cam groove 129. When the first inclined region 153 moves toward the inclination switching region 151 and when the cam pin 127 moves through the second inclined region 155 of the cam groove 129 toward the inclination switching region 151, Since the compression spring 125 is configured to be pressed in the compression direction by the cylindrical cam member 123 that moves in a direction away from the uniaxial cylinder 107, an automatic closing operation or an automatic operation is performed using the restoring force of the compression spring 125. A closing operation can be realized.

  Further, the hinge 100 according to the present embodiment traces the inclination angle of each inclined region (first inclined region 153, second inclined region 155) and the inclined region (first inclined region 153, second inclined region 155). By adjusting the frictional force generated between the cam groove 129 and the cam pin 127 so as to have an appropriate value, a good damper function can be achieved when performing automatic opening and closing operations. Compared with a mode in which a cassette type damper is attached to the structure, it is possible to avoid a complicated structure and an increase in cost, and it is excellent in practicality.

  In particular, in this embodiment, a plurality of cam grooves 129 having the same shape are formed in the cylindrical cam member 123 (two in the illustrated example), and the cam pins 127 are guided in the cam grooves 129. It is possible to disperse the load acting on the cam pin 129 and prevent / suppress the situation where the cam pin 127 on which an excessive load is acting during the opening operation or the closing operation is inadvertently caught in the cam groove 129. it can. Further, since the plurality of cam grooves 129 are formed at positions where the phases are different in the circumferential direction of the cylindrical cam member 123, the cylindrical cam is compared with the case where the plurality of cam grooves 129 are formed in the same phase. The load that the member 123 receives from the cam groove 129 can be effectively dispersed.

  Moreover, the door D that has reached the closed position (C) is held by the latch mechanism 400 by attaching the door catcher 200, the door damper 300, and the latch mechanism 400 to the door D attached with the hinge 100 of the present embodiment. In addition, the door D that has reached the closed position (C) can be realized by the door catcher 200 so that the position can be maintained. With such a door system X, a problem that may occur when a pressure difference occurs between two spaces to be partitioned by the door D due to wind or the like in a state where the door D is left in the middle position, that is, the door D Can be prevented or suppressed inadvertently rotating in the closing direction or opening direction to generate a large impact sound or harming a person near the door D.

  In addition, this invention is not limited to embodiment mentioned above. For example, the cam groove only needs to have an inclination switching area, a first inclination area and a second inclination area extending in different directions with the inclination area as a boundary, and does not have the steep inclination area described above. Also good.

  The first inclined region and the second inclined region are not limited to those having a target shape with the inclination switching region as a boundary, and may have an asymmetric shape with the inclination switching region as a boundary. That is, the inclination angles and distances of the respective inclined regions (first inclined region and second inclined region) may be made different from each other. In particular, when the distance of each inclined area is changed, the moving distance of the cam pin passing through each inclined area is naturally different from each other. Can be set in accordance with an arbitrary opening angle of the door with respect to the opening (an angle corresponding to “θ” in FIG. 3).

  Moreover, in this embodiment mentioned above, although the hinge 100 applicable to the door D which set the position where the opening angle with respect to the opening part S is about 180 degree | times to the open position (O) was shown, the structure of a building and a user's request Accordingly, as shown in FIG. 19, the opening angle of the door D with respect to the opening S is, for example, 90 degrees (a value lower than 90 degrees to avoid the knob N provided on the door D from hitting the wall, for example, 85 It is also possible to use a hinge that can be suitably applied to the door D in which the position of the degree is set to the open position (O). In this case, for example, the cam groove forming area occupied in the circumferential direction of the tubular cam member is substantially the same as the cam groove forming area shown in FIG. Set it in half.

  In the above-described embodiment, the door frame provided on the wall is an edge of the opening (opening edge). However, the door frame is not provided on the wall, and the boundary portion of the wall with the opening is itself. The aspect which is the edge of an opening part may be sufficient.

  In the above-described embodiment, the first hinge element is attached to the door, and the second hinge element is attached to the opening edge (door frame). However, the first hinge element is attached to the opening edge. The second hinge element can also be used attached to the opening edge. Further, the first hinge element may function as a lower hinge element disposed below the second hinge element, and the second hinge element may function as an upper hinge element disposed above the first hinge element. Is possible.

  In the embodiment described above, one end and the other end of the inclination switching area are set at the same point as the inclination switching area, and the cam pin that has reached the inclination switching area from one of the first inclination area or the second inclination area immediately becomes the other. The shape set to a shape that can move to the inclined region is illustrated, but as the inclined switching region, one end and the other end of the inclined switching region are separated in the circumferential direction of the cylindrical cam member, for example, a linear shape It is also possible to apply what is set in. Further, an inclination switching region set to a shape in which one of the linear portion and the concave portion or a combination of both may be applied so that the cam pin can be temporarily stopped in the inclination switching region.

  Further, the number and formation location of the cam grooves can be changed according to the number and formation location of the cam pins.

  In the above-described embodiment, an example in which the door D is rotated approximately 180 degrees between the closed position (C) and the open position (O) using the entire cam groove 129 is illustrated. The door is rotated by a predetermined angle (for example, 90 degrees, 120 degrees, etc.) between the closed position and the opened position by using only a part of the substantially inverted V-shaped (mountain fold) cam groove at the apex. Is also possible. As an example, when the door is in the open position, the cam pin of the shaft is positioned in the cam groove inclination switching region, and when the door is in the closed position, the cam pin of the shaft is positioned in the first inclination region of the cam groove. The aspect set so that it may be located in any one of a lower end thru | or a lower end vicinity or the lower end thru | or the lower end vicinity of a 2nd inclination area | region is mentioned. The hinge used in such a manner simply applies the operating force to move the door in the open position in the closing direction, and it is lowered along the restoring force of the compression spring in the compressed state and one of the inclined regions. As a result of the movement of the cam pin, the hinge can be automatically closed so that the door can be automatically moved to the closed position. Further, when the door is in the closed position, the cam pin of the shaft is positioned in the inclination switching region of the cam groove, and when the door is in the open position, the cam pin of the shaft extends from the lower end of the first inclination region of the cam groove. The aspect set so that it may be located in either one of the lower end vicinity or the lower end thru | or the lower end vicinity of a 2nd inclination area | region is mentioned. The hinge used in such a manner simply applies the operating force to move the door in the closed position in the opening direction, and it is lowered along the restoring force of the compression spring in the compressed state and one of the inclined regions. By moving the cam pin, the hinge is an auto-opening type hinge that can automatically move the door to the open position. In order to realize a hinge that supports the door so that it can be opened and closed at an angle other than 180 degrees as described above, a relative assembly angle between the first hinge element and the second hinge element in a plan view is selected from a plurality of patterns. You can do it. Specifically, the outer shape of the shaft in a plan view is a polygonal shape such as a quadrangle, or three or more flat portions are formed in the circumferential direction on the outer peripheral surface, while the inner surface shape of the shaft cylinder of the hinge element (inside the shaft cylinder) The inner surface shape of the non-rotatable bearing) can be set to a shape corresponding to the outer shape of the shaft, and the mounting angle of the shaft that is non-rotatably accommodated in one shaft cylinder can be selected from multiple patterns The mode to do can be mentioned.

  In addition, the specific configuration of each part is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.

DESCRIPTION OF SYMBOLS 100 ... Hinge 101 ... 1st hinge element 103 ... 2nd hinge element 107 ... 1st cylinder 115 ... 2nd cylinder 121 ... Shaft 123 ... Cylindrical cam member 125 ... Compression spring 127 ... Cam pin 129 ... Cam groove 151 ... Inclination Switching area 153 ... 1st inclined area 155 ... 2nd inclined area D ... Door S ... Opening X ... Door system W ... Opening edge (door frame)
(C) ... Closed position (O) ... Open position

Claims (3)

A hinge interposed between a door that can be opened and closed while rotating the opening and an edge of the opening, and rotatably supporting the door;
A first hinge element having a first barrel;
A second hinge element having a second barrel;
One end side region is non-rotatably inserted into the first shaft tube and the other end side region is rotatably inserted into the second shaft tube so that these shaft tubes are coaxially arranged, and at least A shaft that is restricted from moving toward the first shaft cylinder;
A cylindrical cam member which is accommodated in the second shaft cylinder so as to be movable up and down in the axial direction in a non-rotatable state and has a cam groove engageable with a cam pin provided in the other end side region of the shaft;
A compression spring housed in the second shaft cylinder,
The cam groove extends from one end of the inclination switching region, which is the region closest to the first shaft cylinder among the cam grooves, and is inclined in a direction gradually separating from the first shaft cylinder. A first inclined region, and a second inclined region extending from the other end of the inclination switching region in a direction different from the first inclined region and inclined in a direction gradually separating from the first shaft cylinder. And
When the cam pin moves in the first inclined region of the cam groove toward the inclination switching region, and when the cam pin moves in the second inclined region of the cam groove toward the inclination switching region, the first A compression spring is pressed in the compression direction by the cylindrical cam member that moves in a direction away from the first shaft cylinder in a biaxial cylinder ;
In a state where the door is attached to one of the first hinge element or the second hinge element and the other hinge element is attached to the opening edge, the door in the closed position is predetermined in the opening direction. By rotating the angle, the cam pin moves toward the tilt switching region while being guided by either the first tilt region or the second tilt region of the cam groove in the second shaft cylinder. Then, the door enters the other slope area beyond the slope switching area, and the cam pin moves in the direction away from the slope switching area by the restoring force of the compression spring, so that the door Automatically move to the open position,
By rotating the door in the open position by a predetermined angle in the closing direction, the cam pin moves toward the inclination switching area while being guided by the other inclination area of the cam groove in the second shaft cylinder. Then, the door enters the one slope area beyond the slope switching area, and the cam pin moves in the direction away from the slope switching area by the restoring force of the compression spring. The hinge is configured to automatically move to the closed position . The hinge according to claim 1, wherein a plurality of cam grooves are formed in the cylindrical cam member, and the same number of cam pins as the cam grooves are provided on the shaft. The hinge according to claim 2, wherein the plurality of cam grooves are formed in different phases in the circumferential direction of the cylindrical cam member.

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