JP7425154B1 - hinge - Google Patents

Abstract

An object of the present invention is to provide a novel hinge capable of sufficiently smoothly pivoting and opening a first member or a second member from a closed position to an open position beyond a retracted region. The device includes a one-side member 6 and an other-side member 8 into which a fixed shaft is inserted. The one-sided member is relatively rotatably connected to the shaft by a holding torque of the holding means. The other member is connected to the second member and also to the shaft. The other side member and the shaft are connected by a pin 58 and a groove 56. The groove is divided into a guiding region 60 that is inclined in the axial direction and extends in the circumferential direction, and a holding region 62 that extends linearly in the circumferential direction. One side engaging means 34 and the other side engaging means 66 are disposed on mutually opposing surfaces of the one side member and the other side member, respectively, and when the first member or the second member is in the closed position, The one side member and the other side member are separated. When the other side member is pivoted open from the closed position, the other side member approaches the one side member, and the other side engaging means is brought into frictional engagement with the one side engaging means. [Selection diagram] Figure 2

Description

The present invention provides a hinge that pivotally supports a first member and a second member that are relatively pivotable between a closed position and an open position, particularly when the first member or the second member is in the vicinity of the closed position. Relating to a hinge that draws the first member or the second member into the closed position when in the angular position, but maintains the angular position when the first member or the second member is in the angular position beyond the vicinity of the closed position. .

Torque hinges, which are one form of using torque limiters, have been known for a long time as hinges that pivotally support a first member and a second member that are relatively rotatable between a closed position and an open position. . A first member and a second member pivotally supported by a torque hinge are caused to pivot relative to each other against a required holding torque, and when such pivoting is stopped, any position between the closed and open positions is caused. Even at an intermediate angular position, the angular position is held by the holding torque. The above-mentioned holding torque is usually generated by restoring force when an elastic body such as a spring is elastically deformed. An example of a torque hinge is disclosed in Patent Document 1 listed below.

Further, Patent Document 2 below describes a hinge similar to the torque hinge described above, in which the first member or the second member is pulled into the closed position when the first member or the second member is at an angular position near the closed position. However, a hinge is disclosed that maintains the angular position of the first member or the second member when the first member or the second member is in an angular position beyond the vicinity of the closed position. Such a hinge includes a concave cam 7 and a convex cam 8 that are arranged adjacent to each other in the axial direction on the support shaft, the concave cam 7 being fixed to the second bracket 2 fixed to the second member, and the convex cam 8 being fixed to the second member. They are each connected to a first bracket 1 fixed to a first member. Concave portions 7b and 7c and convex portions 8b and 8c are formed on mutually opposing surfaces of the concave cam 7 and the convex cam 8, respectively, and extend in the circumferential direction and are capable of fitting into each other. When the first member or the second member is in the closed position, the convex portions 8b and 8c are fitted into the concave portions 7b and 7c, and the axial lengths of the concave cam 7 and the convex cam 8 are minimum. When the first member or the second member is pivoted open from the closed position, the convex portions 8b and 8c move in the circumferential direction relative to the concave portions 7b and 7c. Both circumferential side surfaces of the recesses 7b and 7c and the protrusions 8b and 8c are inclined toward the outside in the circumferential direction, so when the protrusions 8b and 8c move in the circumferential direction relative to the recesses 7b and 7c, the protrusions 8b and 8c ride on the circumferential side surfaces of the recesses 7b and 7c, thereby extending the axial lengths of the concave cam 7 and the convex cam 8. Then, when the convex portions 8b and 8c escape from the concave portions 7b and 7c by climbing over the circumferential side surfaces of the concave portions 7b and 7c, the axial lengths of the concave cam 7 and the convex cam 8 become maximum. An elastic means 4 is disposed adjacent to the back surface of the convex cam 8, that is, on the opposite side in the axial direction from the concave cam 7. When the axial lengths of the concave cam 7 and the convex cam 8 are extended, the convex cam 8 The elastic means 4 pushes the concave cam 7 in the axial direction. A spacer member 5a that contacts the second bracket 2 is disposed in front of the concave cam 7, and the convex cam 8 presses the spacer member 5a against the second bracket 2 via the concave cam 7. This generates a required resistance torque in the second bracket 2, and this resistance torque holds the first member or the second member in the intermediate angular position. On the other hand, when the axial lengths of the concave cam 7 and the convex cam 8 are minimum, the convex cam 8 is not pressed in the axial direction by the elastic means 4. From this, when the first member or the second member is in the vicinity of the closed position, the side surfaces of the convex portions 8b and 8c contact the side surfaces of the recessed portions 7b and 7c, and these side surfaces are both inclined toward the outside in the circumferential direction. Because of this, the convex portions 8b and 8c are guided to the bottom surfaces of the concave portions 7b and 7c. The first member or the second member is thus drawn into the closed position. Such torque hinges are sometimes referred to as detent torque hinges. Note that the angular region near the closed position where the first member or the second member is pulled into the closed position is referred to as a "retraction region."

Patent No. 6866529 Japanese Patent Application Publication No. 2015-48906

In the torque hinge disclosed in Patent Document 1, the user forcibly swings and closes the first member or the second member against the holding torque to bring the first member or the second member into the closed position. . In the torque hinge disclosed in Patent Document 1, since a holding torque is always acting on the first member or the second member, the torque of the first member or the second member is Due to the so-called springback of rigidity and elastic bodies, even if the user forcibly pivots and closes the first member or the second member to the closed position, the user's hand cannot be removed from the pivoted member. When released, the member rebounds from the closed position and swings open somewhat, making it impossible to position it in the closed position. In order to position the first member and the second member in the closed position, locking means for releasably locking the first member and the second member in the closed position are respectively provided on both members. However, it is not preferable from the viewpoints of an increase in the number of parts, complexity during use, aesthetics, etc.

According to the hinge disclosed in Patent Document 2, the above-mentioned problems of Patent Document 1 can be solved, but the hinge disclosed in Patent Document 2 has the following problems. That is, in the hinge disclosed in Patent Document 2, as clearly shown in FIG. Since the resistance torque overshoots, the sensation before and after the pull-in region is unfavorable.

The present invention has been made in view of the above facts, and its main technical problem is to sufficiently smoothly pivot and open the first member or the second member from the closed position to the open position beyond the retracted area. The objective is to provide a new hinge that can be used.

That is, according to the present invention, as a hinge that solves the above-described main technical problem, a first member and a second member that are relatively rotatable between a closed position and an open position are pivotally supported, and the first member and the second member are pivotably supported. When the member or the second member is at an angular position near the closed position, the first member or the second member is pulled into the closed position, but when the first member or the second member is at an angle beyond the vicinity of the closed position. a hinge that maintains its angular position when in position;
A shaft fixed to a first member and extending axially on a support shaft, and a one-side member and an other-side member into which the shaft is inserted, the one-side member and the other-side member being adjacent to each other in the axial direction. It is located in
The one-side member is relatively rotatably connected to the shaft by a holding torque of a holding means,
The other side member is connected to a second member and is allowed to move in the axial direction, but is restricted in movement in the circumferential direction;
A groove communicating with the inserted shaft is formed in the outer circumferential surface of the other side member, and a hole is formed in the outer circumferential surface of the shaft, and the pin is inserted into the hole in the groove. The other side member is also connected to the shaft,
The groove is divided into a guiding region that is inclined in the axial direction and extends in the circumferential direction, and a holding region that extends linearly in the circumferential direction, and the groove is divided into a guiding region that is inclined in the axial direction and extends in the circumferential direction, and a holding region that extends linearly in the circumferential direction. When the pin is pivoted open to the point where the pin is relatively moved from one end of the groove in the guiding area to the other end of the groove in the holding area,
One side engaging means and the other side engaging means are respectively disposed on mutually opposing surfaces of the one side member and the other side member that are arranged adjacent to each other in the axial direction,
When the first member or the second member is in the closed position, the one side member and the other side member are separated,
When the first member or the second member is pivoted open from the closed position, the other member rotates relative to the shaft while the pin is located in the guiding region of the groove. When the pin reaches the boundary between the guide area and the holding area of the groove, the other side engaging means is brought into frictional engagement with the one side engaging means, and the other side member is brought into contact with the one side engaging means. The other side member is rotatable together with the member, and while the pin is located in the holding area of the groove, the other side member is integrated with the one side member due to the frictional engagement and is held by the holding means. A hinge is provided that is rotated relative to the shaft against a torque.

Preferably, an elastic member is disposed between the one-side member and the other-side member to constantly apply a repulsive force between the two members. Both the one side engaging means and the other side engaging means are unevenness formed on a protruding end surface of a cylindrical wall projecting in the axial direction with the support shaft as an axis, and the unevenness is formed in large numbers alternately and repeatedly in the circumferential direction. It is better to have Preferably, the other side member is connected to the second member via a stay fixed to the second member, and the stay has a hollow fitting part inside thereof into which the other side member is fitted with a gap. We are prepared. Two grooves are formed at an angular interval of 180 degrees, the two grooves are symmetrical with respect to the support shaft, and the hole formed in the shaft is symmetrical with respect to the support shaft. When the single pin is inserted into the hole, one end of the pin is located in one of the two grooves, and the other end is located in the other of the two grooves. is preferable.

The hinge of the present invention includes one side member and the other side member that are arranged adjacent to each other in the axial direction on the support shaft, and the one side member and the other side member are connected to a first member and a second member that are pivotally supported. are spaced apart in the axial direction when the first member or the second member is in the closed position, and when the first member or the second member is pivoted from the closed position to the open position in the retraction region, the other member rotates to open one side. Approach the member. One-side engaging means and the other-side engaging means are formed on mutually opposing surfaces of the one-side member and the other-side member, respectively, and the one-side engaging means frictionally engages with the other-side engaging means by the above-mentioned approach. Then, the one side member and the other side member integrally start rotating with respect to the shaft against the required holding torque by the holding means. In other words, in the hinge of the present invention, when the first member or the second member is rotated open from the closed position and exits the retracting area, the one side engaging means and the other side engaging means work like a friction clutch. Therefore, the resistance torque acting on the first member or the second member that rotates and opens is gradually increased without overshooting. Therefore, the user can sensually pivot the first member or the second member from the closed position beyond the retracted region to the open position.

FIG. 1 is a diagram showing an example of a box with a lid in which a hinge configured according to the present invention is used. FIG. 1 is a configuration diagram of a preferred embodiment of a hinge constructed in accordance with the present invention. 3 is an exploded perspective view of the hinge shown in FIG. 2. FIG. FIG. 3 is a diagram showing a state in which the holding means included in the hinge shown in FIG. 2 is combined with a shaft; FIG. 3 is a diagram showing a single side member of the hinge shown in FIG. 2; The figure which shows the other side member which the hinge shown in FIG. 2 is equipped with as a single unit. 3 is a diagram for explaining the operation of the hinge shown in FIG. 2. FIG. 3 is a diagram for explaining the operation of the hinge shown in FIG. 2. FIG. 3 is a diagram for explaining the operation of the hinge shown in FIG. 2. FIG.

A more detailed explanation will be given below with reference to the accompanying drawings.

Prior to describing a preferred embodiment of the hinge constructed according to the present invention, for convenience, an example of a box with a lid in which this hinge is used will be described with reference to FIG. The box 100 has a rectangular parallelepiped shape, and its outer peripheral surface and bottom surface are closed by four side walls 102a to 102d (the unillustrated side wall 102d is a side wall opposite to the side wall 102b) and an unillustrated bottom wall. One side of the top surface of the box 100 is closed by a rectangular top wall 104, and a rectangular opening 106 is formed on the other side of the top surface. The lid 108 is in the form of a thin plate corresponding to the opening 106, and is pivotable between a closed position covering the opening 106 and an open position exposing the opening 106 by means of a hinge 2 configured according to the present invention. 100. The support axis o of the hinge 2 is located at the boundary between the top wall 104 and the opening 106, and the hinge 2 is disposed on both side surfaces of the lid 108, respectively. In one hinge 2, a first stay 12, which will be described later, is fixed to the inner surface of the side wall 102a of the box 100, and a second stay 44, which will be described later, is fixed to one side of the lid 108. In this case, a first stay 12, which will be described later, is fixed to the inner surface of the side wall 102c of the box 100, and a second stay 44, which will be described later, is fixed to the other side surface of the lid 108, respectively.

Next, preferred embodiments of the hinge constructed according to the present invention will be described. In addition, in the following explanation, "one side in the axial direction" and "the other side in the axial direction" are based on the state shown in the AA cross section of FIG. 2, unless otherwise specified. The left side refers to the right side in the figure, and the ``other axial side'' refers to the right side in the figure.

Referring to FIGS. 2 and 3, the hinge 2, which is a preferred embodiment of the hinge constructed according to the present invention, includes a shaft 4 extending axially on a support axis o, and a one-sided member through which the shaft 4 is inserted. 6 and the other side member 8. The one side member 6 and the other side member 8 are arranged adjacent to each other in the axial direction on the shaft 4.

Referring to FIG. 4 as well as FIGS. 2 and 3, the shaft 4 has a circular cross section except for one end in the axial direction.A part of the outer peripheral surface of the shaft 4 is cut out at one end in the axial direction. A connecting portion 10 having a non-circular cross section is formed. The connecting portion 10 is fitted into a connecting hole 14 formed in a flat plate-shaped first stay 12 that is fixed to a first member such as the box 100. Therefore, in the illustrated embodiment, the shaft 4 is fixed to the first member via the first stay 12. In the illustrated embodiment, the outer diameter of the other axial end of the shaft 4 is further reduced, and the other axial end of the shaft 4 is connected to a second stay 44 (described later) via a rolling bearing 16. Pivotally supported. An annular groove 18 that extends continuously in the circumferential direction is formed on the outer peripheral surface of the other axial end of the shaft 4, and the other axial end of the shaft 4 is pivotally supported by the second stay 44. By fitting the C-ring 20 into the groove 18 in this state, the shaft 4 is prevented from falling off the second stay 44. An annular groove 22 that continuously extends in the circumferential direction is also formed on the outer circumferential surface of the axially intermediate portion of the shaft 4 . A hole 24 extending perpendicularly to the axial direction is also formed in the outer circumferential surface of the axially intermediate portion of the shaft 4 . In the illustrated embodiment, the hole 24 is formed somewhat axially on the other side of the groove 22, and the hole 24 passes through perpendicularly to the axial direction.

Referring to FIG. 5 together with FIGS. 2 and 3, the one-side member 6 includes a substantially square end plate 26 disposed perpendicularly to the axial direction and a square tube extending from the outer peripheral edge of the end plate 26 to one side in the axial direction. It is composed of an outer peripheral wall 28 having a shape. A circular through hole 30 is formed in the center of the end plate 26, and the shaft 4 is inserted through this through hole 30. A one-sided cylindrical wall 32 that surrounds the outer peripheral edge of the through hole 30 and protrudes in the axial direction is formed on the other axial side of the end plate 26, and one-sided engagement means 34 is formed on the protruding end surface of the one-sided cylindrical wall 32. is formed. The one-side engaging means 34 is a plurality of projections and depressions formed alternately and repeatedly in the circumferential direction.

The one-side member 6 is relatively rotatably connected to the shaft 4 by a holding torque of the holding means. Referring again to FIG. 4 together with FIGS. 2 and 3, in the illustrated embodiment, the holding means, generally designated by the numeral 36, is made up of a plurality of laminated sheets ( In the illustrated embodiment, it is composed of four C-shaped leaf springs 38 and a holder 40 that holds the leaf springs 38 on the shaft 4. The holder 40 is formed by insert molding a plurality of laminated leaf springs 38 together with a portion of the shaft 4 through which they are inserted, from an appropriate synthetic resin material. The formed retainer 40 is rotatable with respect to the shaft 4 together with the plurality of laminated leaf springs 38, and a required holding torque (resistance torque) is generated between the plurality of laminated leaf springs 38 and the shaft 4. occurs. For details of such holding means 36, please refer to the above-mentioned Patent Document 1. The outer shape of the holder 40 is approximately cubic, and the cross-sectional shape of its outer peripheral surface corresponds to the cross-sectional shape of the inner peripheral surface of the outer peripheral wall 28 of the one-sided member 6, and the holder 40 is fitted inside the outer peripheral wall 28. Ru. As described above, the shaft 4 is connected to the first stay 12 by fitting the connecting portion 10 formed at one end of the shaft 4 in the axial direction into the connection hole 14 formed in the first stay 12. Since stability is not good if there is a gap between the first stay 12 and the holder 40, an annular spacer 42 is arranged in the gap.

Referring to FIGS. 2 and 3, the other side member 8 has a generally positive shape when viewed in the axial direction, has a required axial width, and is connected to a second member such as the lid 108. On the other hand, movement in the axial direction is allowed, but movement in the circumferential direction is restricted. In the illustrated embodiment, the other side member 8 is connected to the second member via the second stay 44 . The second stay 44 includes a flat main part 46 fixed to the second member and a hollow fitting part 48 attached to one end of the main part 46. The hollow fitting part 48 includes a bottom wall 48a arranged perpendicularly to the axial direction and a holding cylinder 48b extending from the outer peripheral edge of the bottom wall 48a to one side in the axial direction, and one end of the holding cylinder 48b in the axial direction. One end of the main portion 46 is connected to the outer peripheral surface of the main portion 46 . The cross-sectional shape of the inner circumferential surface of the holding tube 48b is approximately square, corresponding to the cross-sectional shape of the outer circumferential surface of the other side member 8, and the other side member 8 is fitted with a clearance inside the holding tube 48b, and It becomes impossible to rotate. Further, the axial inner dimension of the holding cylinder 48b is longer than the axial length of the other side member 8, and the other side member 8 is movable in the axial direction inside the holding cylinder 48b. Note that after the other side member 8 is connected to the shaft 4, it is fitted with a gap inside the holding cylinder 48b (the connection between the other side member 8 and the shaft 4 will be described later). The bottom wall 48a is formed with a bearing portion 50 in which the rolling bearing 16 is accommodated and a circular central through hole 52 through which the other axial end of the shaft 4 is inserted.

Referring to FIG. 6 together with FIGS. 2 and 3, a circular through hole 54 extending in the axial direction is formed in the center of the other side member 8, and the shaft 4 is inserted through this through hole 54. A groove 56 communicating with the through hole 54 is formed on the outer circumferential surface of the other side member 8 , and when the shaft 4 is inserted into the through hole 54 , a pin 58 is inserted from the outside of the other side member 8 through the groove 56 . The other side member 8 is also connected to the shaft 4 by being inserted into a hole 24 formed on the outer peripheral surface of the shaft 4 . The groove 56 extends in the circumferential direction, and when the other side member 8 rotates with respect to the shaft 4 as described later, the pin 58 moves relatively along the groove 56. In other words, the rotation of the other side member 8 with respect to the shaft 4 is limited to the range in which the pin 58 moves along the groove 56. The pin 58 is not rotatable relative to the shaft 4, that is, the first member, and the other member 8 in which the groove 56 is formed is not rotatable relative to the second member. The first member or the second member is in the closed position or open position when located at both ends of the position. Here, in the hinge constructed according to the present invention, the groove 56 is divided into a guiding region 60 that is inclined in the axial direction and extends in the circumferential direction, and a holding region 62 that extends linearly in the circumferential direction. When the first member or the second member is pivoted open from the closed position to the open position, the pin 58 moves relatively from one end 56a of the groove 56 in the guiding region 60 to the other end 56b of the groove 56 in the holding region 62. be forced to move up to In the illustrated embodiment, two grooves 56 are formed with an angular spacing of 180 degrees. The two grooves 56 are in a point-symmetrical positional relationship with respect to the support axis o, and when the pin 58 is inserted into the hole 24 formed on the outer peripheral surface of the shaft 4, one end of the pin 58 is inserted into the hole 24. The other end is located in one of the two grooves 56, and the other end is located in the other of the two grooves 56. Although it is sufficient that only one groove 56 is formed, as in the illustrated embodiment, a single pin 58 is inserted through each of the two grooves 56 in common, so that the other side member 8 moves in the axial direction while rotating with respect to the shaft 4, the posture of the other side member 8 with respect to the shaft 4 is stabilized, thereby allowing the other side member 8 to move smoothly with respect to the shaft 4. .

The other side cylindrical wall 64 that surrounds the outer peripheral edge of the through hole 54 and protrudes in the axial direction is formed on one axial side surface of the other side member 8. Engagement means 66 are formed. The other side engaging means 66 is a plurality of irregularities formed alternately and repeatedly in the circumferential direction. The other side engaging means 66 faces the above-mentioned one side engaging means 34 in the axial direction, and when the first member or the second member is in the closed position, the one side member 6 and the other side member 8 are separated from each other. Then, the engagement between the one-side engaging means 34 and the other-side engaging means 66 is released. In the illustrated embodiment, between the one side member 6 and the other side member 8, there are a plurality of annular elastic members 68 (in the illustrated embodiment, four annular elastic members 68 such as leaf springs that constantly apply a repulsive force between both members). ) are arranged. These elastic members 68 are arranged to surround the outer peripheral surfaces of the one side cylindrical wall 32 of the one side member 6 and the other side cylindrical wall 64 of the other side member 8. From the viewpoint of easy visibility, the elastic member 68 is shown with a two-dot chain line in FIG. 2, and is omitted in FIGS. 7-1 to 7-3.

Next, the operation of the hinge 2 will be explained with reference to FIGS. 7-1 to 7-3. In the center view of each of FIGS. 7-1 to 7-3 and the right view showing a partially enlarged view, the inside of the hollow fitting part 48 of the second stay 44 is shown by a solid line, and the second stay 44 itself is It is shown by an imaginary line (double-dashed line). In the following description, the box with a lid shown in FIG. 1 is taken as an example, and the first member corresponds to the fixed box 100, and the second member corresponds to the lid 108, which is rotatable with respect to the box 100. . Referring to FIG. 1 in conjunction with FIGS. 7-1 through 7-3, in the illustrated embodiment, when the second member is in the closed position relative to the first member, the As shown, the first stay 12 fixed to the first member (box 100) and the second stay 44 fixed to the second member (lid 108) are opened 180 degrees around the support axis o. In this state, as described above, the pin 58 is located at one end 56a of the groove 56 in the guiding region 60, and the one side member 6 and the other side member 8 are separated from each other, and the one side engaging means 34 and the other side engaging means The engagement with 66 has been released.

When the second member is pivoted open relative to the first member from the state shown in FIG. 7-1, that is, the state where the second member is in the closed position relative to the first member, the second stay 44 and The other side member 8 fitted into the hollow fitting portion 48 of this member is rotated counterclockwise around the support shaft o when viewed from one side in the axial direction. In the center views of FIGS. 7-1 to 7-3, the direction of rotation of the other side member 8 when the above-mentioned swing-opening movement is performed is indicated by an arrow. By rotating the other side member 8 in the above direction, the pin 58 moves relatively along the groove 56 from one end 56a of the groove 56 toward the other end 56b, as shown in FIG. 7-2. At this time, the guide region 60 of the groove 56 is inclined in the axial direction, more specifically, from the other axial side toward one side in the axial direction when viewed in the rotation direction (direction indicated by the arrow) of the other side member 8. Due to the fact that the pin 58 extends in the circumferential direction while being inclined in the approaching direction, the other side member 8 is rotated in the above direction, and the pin 58 is relatively moved from one end 56a of the groove 56 toward the other end 56b. When the other side member 8 moves along the guiding region 60 , the other side member 8 is brought closer to the one side member 6 . That is, the other side member 8 is made to approach the one side member 6 while rotating counterclockwise. In the illustrated embodiment, an elastic member 68 is disposed between the one side member 6 and the other side member 8, so that a repulsive force is always applied between the two members. approach the one-side member 6 against the Since the one-side engaging means 34 and the other-side engaging means 66 are disposed on the mutually opposing surfaces of the one-side member 6 and the other-side member 8, respectively, the other-side member 8 approaches the one-side member 6. When the other side engaging means 66 comes into contact with the one side engaging means 34 and comes into close contact with it, the other side engaging means 66 and the one side engaging means 34 are engaged (frictionally engaged) due to the friction between them. ), and the other side member 8 rotates relative to the shaft 4 against the holding torque of the holding means 36 connected to the one side member 6 integrally with the one side member 6. The other side engaging means 66 is frictionally engaged with the one side engaging means 34 by the time the pin 58 reaches the boundary between the guiding area 60 and the holding area 62 of the groove 56 (the state shown in FIG. 7-2). The other side member 8 can rotate integrally with the one side member 6. In the illustrated embodiment, the other side member 8 becomes integral with the one side member 6 when the pin 58 reaches the boundary between the guiding region 60 and the holding region 62 of the groove 56 (the state shown in FIG. 7-2). can be rotated. When the second member is further pivoted and opened relative to the first member from the state shown in FIG. 7-2, the pin 58 moves relatively along the holding area 62 toward the other end 56b of the groove 56. . Since the holding area 62 of the groove 56 extends only in the circumferential direction without being inclined in the axial direction, even if the second member swings open when the pin 58 is located in the holding area 62 of the groove 56, the other side The member 8 does not approach the one-side member 6, and the other-side member 8 rotates relative to the shaft 4 against the holding torque while remaining integral with the one-side member 6 due to the frictional engagement. Then, when the pin 58 reaches the other end 56b of the groove 56, the pivoting and opening movement of the second member is stopped, and the second member is placed in the open position. In the illustrated embodiment, the second member is pivoted 18 degrees from the closed position to move the pin 58 from the guide region 60 of the groove 56 to the retention region 62, and pivoted 78 degrees from the closed position. to reach the open position.

Here, when the rotation of the second member with respect to the first member is stopped at an intermediate angular position between the closed position and the open position, the other side member 8 is forced to rotate and close due to the weight of the second member. Rotational torque in the direction of The direction in which such rotational torque acts is clockwise when viewed from one side of the support shaft o in the axial direction, and is the opposite direction to the direction indicated by the arrow in the center views of FIGS. 7-1 to 7-3. be. At this time, in the hinge 2 constructed according to the present invention, if the pivoting and opening movement of the second member is stopped while the pin 58 is located in the guiding region 60 of the groove 56, the guiding region 60 of the groove 56 The region 60 is inclined in the axial direction, more specifically, it is inclined from one side in the axial direction toward the other side in the axial direction when viewed in the direction in which the rotational torque acting on the other side member 8 acts, that is, in a direction away from the one side member 6. Due to the fact that the pin 58 extends in the circumferential direction, when the rotational torque acts on the other side member 8, the pin 58 is relatively guided to the one end 56a of the groove 56, and the other side member 8 be separated from The second member is then pivoted closed or retracted towards the closed position. From this, the period during which the pin 58 is located in the guiding region 60 of the groove 56 corresponds to the above-mentioned "retracting region". On the other hand, if the rotation of the second member is stopped while the pin 58 is located in the holding area 62 of the groove 56, even if the rotational torque acts on the other side member 8, the holding area 62 of the groove 56 62 is not inclined with respect to the axial direction, so the other side member 8 cannot be separated from the one side member 6. Therefore, due to the frictional engagement between the other side engaging means 66 and the one side engaging means 34, the other side member 8 cannot rotate with respect to the one side member 6 on the support axis o, and the pin 58 is in the groove 56. It remains in the holding area 62. As a result, the other side member 8 is held on the shaft 4 by the holding torque of the holding means 36 while being integral with the one side member 6, so that the second member is held at the intermediate angular position.

When pivoting the second member relative to the first member from the open position to the closed position, the user must force the second member while the pin 58 is located in the retaining area 62 of the groove 56. Rotate to close. After the pin 58 has moved from the holding area 62 of the groove 56 to the guiding area 60, when the user releases the second member, the second member is drawn into the closed position by its own weight.

The hinge of the present invention includes a one-side member 6 and an other-side member 8 that are arranged adjacent to each other in the axial direction on the support shaft o, and the one-side member 6 and the other-side member 8 are connected to a first member that is pivotally supported. and a second member spaced apart from each other in the axial direction when the second member is in the closed position, and when the first member or the second member is pivoted open from the closed position to the open position in the retraction region, the other member 8 approaches the one-sided member 6 while rotating. One side engaging means 34 and the other side engaging means 66 are formed on mutually opposing surfaces of the one side member 6 and the other side member 8, respectively, and the one side engaging means 34 and the other side engaging means 66 are formed by the above-mentioned approach. As a result of the frictional engagement between the two members, the one-side member 6 and the other-side member 8 integrally start rotating relative to the shaft 4 against the required holding torque by the holding means 36 . That is, in the hinge of the present invention, when the first member or the second member is pivoted open from the closed position and exits the retracting area, the one-side engaging means 34 and the other-side engaging means 66 act as a so-called friction clutch. Therefore, the resistance torque acting on the first member or the second member that rotates and opens is gradually increased without overshooting. Therefore, the user can sensually pivot the first member or the second member from the closed position to the open position beyond the retracted region. In the illustrated embodiment, an elastic member 68 is disposed between the one-side member 6 and the other-side member 8 to constantly apply a repulsive force between the two members. 6 and the other side member 8 are smoothly separated and separated from each other. Furthermore, when the first member or the second member is pivoted and opened from the closed position, it is possible to apply a resistance torque from the time when the first member or the second member is within the retraction area. The difference in resistance torque before and after the area can be reduced, and the sensory experience can be further improved. Furthermore, if the elastic member 68 is disposed between the one side member 6 and the other side member 8, for example, the lid covers an opening formed in the ceiling, and the direction of pivoting and opening of the lid is toward the indoor side (downward). In this case, a force to swing and open the first member or the second member is constantly applied to the first member or the second member, such as when a force in the direction of swinging and opening due to gravity is constantly acting on the lid. Even in this case, the first member or the second member can be held in the closed position by the repulsive force.

The hinge constructed according to the present invention has been described above in detail with reference to the attached drawings, but the present invention is not limited to the embodiments described above, and appropriate modifications and changes may be made without departing from the scope of the present invention. is possible. For example, although in the illustrated embodiment the second member pivots relative to the fixed first member, the first member may pivot relative to the fixed second member; The first member and the second member may each pivot about the support shaft. In addition, in the illustrated embodiment, the state in which the first stay 12 and the second stay 44 are opened at 180 degrees around the support shaft o is defined as the closed position of the first member and the second member, but the support shaft A state in which the first stay 12 and the second stay 44 are closed at 0 degrees with o as the center may be referred to as the closed position of the first member and the second member. In the illustrated embodiment, the holding means described in the above-mentioned Patent Document 1, which was previously filed and patented by the applicant of the present application, is used. Any torque limiter may be used, and therefore a coil spring or a tolerance ring may be used instead of a leaf spring. Furthermore, the one-side engaging means and the other-side engaging means may have any form as long as they can frictionally engage with each other, and therefore do not necessarily have to be a large number of irregularities formed alternately and repeatedly in the circumferential direction. It may be a flat rough surface or the like.

2: Hinge 4: Shaft 6: One side member 8: Other side member 24: Hole 34: One side engaging means 36: Holding means 56: Groove 56a: One end (of the groove) 56b: Other end (of the groove) 58: Pin 60 : Guidance area (of the groove) 62: Holding area (of the groove) 66: Other side engagement means

Claims (5)

A first member and a second member that are relatively rotatable between a closed position and an open position are pivotally supported, and when the first member or the second member is at an angular position near the closed position, the first member is pivoted. or a second member into a closed position, but maintains the angular position when the first member or the second member is in an angular position beyond the vicinity of the closed position, the hinge comprising:
A shaft fixed to a first member and extending axially on a support shaft, and a one-side member and an other-side member into which the shaft is inserted, the one-side member and the other-side member being adjacent to each other in the axial direction. It is located in
The one-side member is relatively rotatably connected to the shaft by a holding torque of a holding means,
The other side member is connected to a second member and is allowed to move in the axial direction, but is restricted in movement in the circumferential direction;
A groove communicating with the inserted shaft is formed in the outer circumferential surface of the other side member, and a hole is formed in the outer circumferential surface of the shaft, and the pin is inserted into the hole in the groove. The other side member is also connected to the shaft,
The groove is divided into a guiding region that is inclined in the axial direction and extends in the circumferential direction, and a holding region that extends linearly in the circumferential direction, and the groove is divided into a guiding region that is inclined in the axial direction and extends in the circumferential direction, and a holding region that extends linearly in the circumferential direction. When the pin is pivoted open to the point where the pin is relatively moved from one end of the groove in the guiding area to the other end of the groove in the holding area,
One side engaging means and the other side engaging means are respectively disposed on mutually opposing surfaces of the one side member and the other side member that are arranged adjacent to each other in the axial direction,
When the first member or the second member is in the closed position, the one side member and the other side member are separated,
When the first member or the second member is pivoted open from the closed position, the other member rotates relative to the shaft while the pin is located in the guiding region of the groove. When the pin reaches the boundary between the guide area and the holding area of the groove, the other side engaging means is brought into frictional engagement with the one side engaging means, and the other side member is brought into contact with the one side engaging means. The other side member is rotatable together with the member, and while the pin is located in the holding area of the groove, the other side member is integrated with the one side member due to the frictional engagement and is held by the holding means. A hinge that is rotated relative to the shaft against torque. The hinge according to claim 1, further comprising an elastic member disposed between the one-side member and the other-side member to constantly apply a repulsive force between the two members. Both the one-side engaging means and the other-side engaging means are unevenness formed on a protruding end surface of a cylindrical wall that projects in the axial direction with the support shaft as an axis, and the unevenness is formed in large numbers alternately and repeatedly in the circumferential direction. 2. The hinge of claim 1. The other side member is connected to the second member via a stay that is fixed to the second member, and the stay has a hollow fitting portion inside thereof into which the other side member is fitted with a clearance. The hinge according to claim 1. Two grooves are formed at an angular interval of 180 degrees, the two grooves are symmetrical about the support shaft, and the hole formed in the shaft is symmetrical with respect to the support shaft. When the single pin is inserted into the hole, one end of the pin is located in one of the two grooves, and the other end is located in the other of the two grooves. , the hinge according to claim 1.

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