JP2018197437A - Hinge device - Google Patents

Abstract

To provide a hinge device capable of improving accommodation property and external appearance.SOLUTION: A hinge device 3 includes a first hinge main body 10 on a housing side, a second hinge main body 20 on a door side, and links 31 to 34. Before the hinge device 3 is mounted on the housing and the door, in a state where the second hinge main body 20 is at a rotation limit position in the direction along which the second hinge main body approaches the first main body 10, a height H6 of a sixth shaft member 46 which is measured from a first installation surface 11x is lower than a height H3 of a third shaft member 43 which is measured from the first installation surface 11x.SELECTED DRAWING: Figure 13

Description

  The present invention relates to a hinge device for connecting first and second objects so as to be rotatable.

  For example, a hinge device is used to pivotally attach a door (second object) to a housing (first object). The hinge devices disclosed in Patent Documents 1 and 2 are configured by a link mechanism including a total of six links.

  When the hinge device comprising the link mechanism is used, the door rotates from the closed state so as to cover the opening side end surface of the housing, while the side edge on the hinge device side moves away from the housing. It can be stably opened at a relatively large opening angle without interfering with the housing.

More specifically, the hinge device includes a first hinge body as a link fixed to the inner surface of the opening side edge of the housing, a second hinge body as a link fixed to the side edge of the door, 1 and the 1st-4th link interposed between the 2nd hinge main bodies.
The second hinge body has a socket portion and a flange portion, and the flange portion is fixed to the side edge portion of the door in a state where the socket portion is accommodated in the recess of the door.

One end portion of the first link is rotatably connected to the rear end portion (the end portion away from the door) of the first hinge body via the first shaft member, and the one end portion of the second link is It is rotatably connected to the front end (end on the door side) of the first hinge body via a biaxial member.
One end of the third link is pivotally connected to the other end of the first link via the third shaft member, and an intermediate portion of the third link is rotated to the intermediate portion of the second link via the fourth shaft member. The other end portion is rotatably connected to the socket portion of the second hinge body via the fifth shaft member.
The fourth link has one end rotatably connected to the other end of the second link via the sixth shaft member, and the other end connected to the socket portion of the second hinge body via the seventh shaft member. It is connected so that it can rotate.

JP 2000-104437 A Design Registration No. 1204606

  In the hinge devices of Patent Documents 1 and 2, the height from the inner surface of the housing is increased in the vicinity of the door (specifically, the sixth shaft member and its vicinity). For this reason, the capacity of the housing was deteriorated. Further, particularly when the door was transparent, the appearance was remarkably impaired.

In order to solve the above problems, the present invention provides a first hinge body having a first installation surface, a second hinge body having a second installation surface, and the first hinge body opposite to the second hinge body. A first link having one end pivotably connected to the end of the first hinge member via the first shaft member, and an end portion of the first hinge body on the second hinge body side via the second shaft member. The second link having one end rotatably connected thereto, and the other end of the first link are rotatably connected via a third shaft member to the intermediate portion of the second link. A third link rotatably coupled to the second hinge body via a fourth shaft member, and a third link pivotally coupled to the second hinge body via a fifth shaft member; One end is rotatably connected to the other end of the second link via a sixth shaft member, and the second hinge body is connected to the second hinge body. In the hinge device provided at a location remote from said fifth shaft member, and a fourth link the other end via a seventh shaft member is pivotally connected to the Te,
In a state where the second hinge body is at a rotation limit position in a direction approaching the first hinge body, the height of the sixth shaft member from the first installation surface is the first of the third shaft member. It is characterized by being lower than the height from the installation surface.

  According to the above configuration, the capacity can be improved by lowering the sixth shaft member and its vicinity. In particular, when a transparent door is used, the appearance from the outside of the door can be improved.

Specifically, the height of the first shaft member from the first installation surface is H1, the height of the second shaft member from the first installation surface is H2, and the first link in the first link is The length of the straight portion between the first shaft member and the third shaft member is L1, the angle of the straight portion with respect to the first installation surface is Θ1, and the second shaft member and the second link in the second link are When the length of the straight portion between the six-axis members is L2, and the angle of the straight portion with respect to the first installation surface is Θ2, the second hinge body rotates in a direction approaching the first hinge body. In the limit position,
H2 + L2 · sinΘ2 <H1 + L1 · sinΘ1
Satisfied.

Preferably, a height H2 of the second shaft member from the first installation surface is lower than a height H1 of the first shaft member from the first installation surface.
According to the said structure, the height of a 6th shaft member can be reduced, without impairing the function of a link mechanism.

Preferably, when the length of the straight portion between the second shaft member and the fourth shaft member in the second link is L2a, and the angle of the straight portion with respect to the first installation surface is Θ2a, In a state where the second hinge body is at a rotation limit position in a direction approaching the first hinge body,
L2a <L1 and Θ2a <Θ1
Satisfied.
According to the said structure, the height of a 6th shaft member can be reduced reliably, without impairing the function of a link mechanism.

Preferably, when the length of the straight portion between the fourth shaft member and the sixth shaft member in the second link is L2b and the angle of the straight portion with respect to the first installation surface is Θ2b, In a state where the second hinge body is at a rotation limit position in a direction approaching the first hinge body,
L2b <L2a and Θ2b <90 °
Satisfied.
According to the said structure, the height of a 6th shaft member can be reduced still more reliably, without impairing the function of a link mechanism.

  Preferably, in a state where the first installation surface and the second installation surface form a right angle, the height of the sixth shaft member from the first installation surface is from the first installation surface of the third shaft member. It is lower than the height.

  In one aspect of the present invention, the first hinge body is fixed in a state where the first installation surface is applied to the inner surface of the opening side edge of the housing as the first object, and the second hinge body is A socket part and a flange part, the second installation surface is formed on the flange part, the socket part is accommodated in a recess formed on the side edge of the door as a second object, In the state where the second installation surface is in contact with the surface of the door, the flange portion is fixed to the surface of the door, and the fifth shaft member and the seventh shaft member are coupled to the socket portion. The first installation surface and the second installation surface are perpendicular to each other with the door closing the opening.

  According to the hinge device of the present invention, it is possible to suppress the protruding height in the vicinity of the second hinge main body, to improve the capacity, and to improve the appearance.

It is a top view which shows the hinge apparatus which concerns on one Embodiment of this invention, (A) shows the state which closed the opening of the housing, (B) rotated 90 degrees from the closed position, and opened the housing opening. The opened state is shown, and (C) shows the state rotated 160 ° from the closed position. It is a top view which shows the two hinge main bodies and four links of the said hinge apparatus with the straight line between shaft members, (A) is the state which closed the door, (B) is the state rotated 90 degrees from the closed position, (C) shows a state rotated 160 ° from the closed position. It is a plane sectional view of a hinge device when the door is in a closed state. It is a plane sectional view of a hinge apparatus when the said door opens 90 degrees. It is a plane sectional view of a hinge device when the door opens 160 degrees. It is a top view which shows a hinge apparatus when the said door is in a closed state in a partial cross section. It is a perspective view of a hinge apparatus when the said door opens 90 degrees. It is a side view of a hinge apparatus when the said door opens 90 degrees. It is a perspective view of a hinge apparatus when the said door opens 160 degrees. It is a disassembled sectional view of the said hinge apparatus. It is a disassembled perspective view of the said hinge apparatus. FIG. 4 is a view corresponding to FIG. 3 showing a specific structure of the door. FIG. 7 is a view corresponding to FIG. 6 showing a state when the second hinge main body is at a rotation limit position in a direction approaching the first hinge main body before the hinge device is attached to the housing and the door.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows one side edge of the opening 1a of the housing 1 (first object) (in this embodiment, the side edge located on the right side when the housing 1 is viewed from the opening side) and the door 2 (second object). The hinge apparatus 3 which connects one side edge part (right side edge) is shown. Hereinafter, the opening side of the housing 1 will be described as the front side, and the back side of the housing 1 will be described as the rear side.
The hinge device 3 is installed at two places (a plurality of places) separated in the vertical direction (direction perpendicular to the paper surface in FIG. 1).
As shown in FIG. 12, the door 2 has a transparent glass plate 2a and a support frame 2b attached to the right edge of the glass plate 2a. In other drawings, the door 2 is schematically shown.

  The detailed structure of the hinge device 3 will be described mainly with reference to FIGS. 3 to 5, 10, and 11. The hinge device 3 includes a first hinge body 10, a second hinge body 20, and first to fourth links 31 to 34 that connect the hinge bodies 10 and 20 as metal components. doing.

  The first hinge body 10 includes a washer 11 fixed to the inner surface of the right edge of the housing 1 with a screw, and a base 12 detachably attached to the washer 11. A surface that contacts the inner surface of the housing 1 in the washer 11 is provided as a first installation surface 11x. The base 12 extends in the front-rear direction, and the front end portion thereof protrudes from the end surface 1 b on the opening 1 a side of the housing 1.

  The second hinge body 20 has a socket part 21 and a pair of flange parts 22 projecting from the socket part 21 in the vertical direction. A recess 2c is formed on the surface of the support frame 2b of the door 2 on the housing 1 side, and the socket portion 21 is fitted into the recess 2c, and the flange portion 22 is fixed to the support frame 2b of the door 2 with screws. A second hinge body 20 is attached to the door 2. The surface which contacts the door 2 in the collar part 22 is provided as the 2nd installation surface 22x.

  One end portion of the first link 31 is rotatably connected to the rear end portion of the base 12 via a first shaft member 41. One end of the second link 32 is rotatably connected to the front end of the base 12 via the second shaft member 42.

A rear end portion of the third link 33 extending in the front-rear direction is connected to the other end portion of the link 31 via a third shaft member 43 so as to be rotatable. A location near the front end in the intermediate portion of the third link 33 is rotatably connected to the intermediate portion of the second link 32 via a fourth shaft member 44.
Further, the front end portion of the third link 33 is rotatably connected to the second hinge body 20 via the fifth shaft member 45. This connection structure will be described in detail later.

  One end of the fourth link 34 is rotatably connected to the other end of the second link 32 via a sixth shaft member 46, and the other end is connected to the second hinge body via a seventh shaft member 47. 20 is rotatably connected. The connection structure to the second hinge body 20 will also be described in detail later.

  The shaft members 41 to 47 extend in the vertical direction and are parallel to each other. The fifth shaft member 45 and the seventh shaft member 47 are separated from each other in the second hinge body 20.

2, in order to facilitate understanding of the operation of the hinge device 3, the base 12 (or the first hinge body 10), the second hinge body 20, and the links 31 to 34 of the hinge device 3 are connected to the shaft members 41 to 41. This is indicated by a straight line connecting 47.
As shown in FIG. 2, the base 12 (or the first hinge body 10) as a link, the links 31 to 33, and the shaft members 41 to 44 constitute a rear link mechanism 4A having four links. ing.
The links 32, 33, 34, the second hinge body 20 as a link, and shaft members 44 to 47 constitute a front link mechanism 4B having four links.

The rear link mechanism 4A and the front link mechanism 4B share the second and third links 32 and 33 and the fourth shaft member 44, and constitute a link mechanism having six links as a whole. Yes.
In FIG. 2, a part belonging to the rear link mechanism 4A of the second link 32 is indicated by reference numeral 32a, and a part belonging to the front link mechanism 4B is indicated by reference numeral 32b. Similarly, a part belonging to the link mechanism 4A of the third link 33 is indicated by reference numeral 33a, and a part belonging to the link mechanism 4B is indicated by reference numeral 33b.

  In the present embodiment, among the constituent elements of the hinge device 3, the base 12 and the links 31 to 34 have a pair of side walls and a connecting wall connecting the side walls. Since the distance between the pair of side walls differs between the components to be connected, the pair of side walls of one component can be connected so as to enter between the pair of side walls of the other component.

  Since the base 12 and the links 32, 33, 34 enter the internal space of the socket portion 21 of the second hinge body 20 when the door 2 described later is closed, the distance between the side walls is different. The third link 33 is the widest, and the base 12, the second link 32, and the fourth link 34 are narrowed in this order. In the figure, the side wall of the third link 33 is indicated by reference numeral 33x, and the side wall of the fourth link 34 is indicated by reference numeral 34x.

  As shown in FIGS. 7 to 9 and FIG. 11, a raised portion 25 is formed inside the socket portion 21 of the second hinge body 20. The raised portion 25 extends along a plane orthogonal to the shaft members 45 and 47, divides the internal space of the socket portion 21 into a pair of accommodating spaces 26, and both ends thereof are connected to the peripheral wall of the socket portion 21. .

A shaft hole 25a is formed at one end of the raised portion 25 (the end away from the side edge of the door 2), and the above-described seventh shaft member 47 is inserted into the shaft hole 25a. Yes. The seventh shaft member 47 is short and does not cross the pair of storage spaces 26.
The ends of the pair of side walls 34 x forming a narrow interval of the fourth link 34 are arranged so as to sandwich the raised portion 25 on both sides of the raised portion 25, and are connected to both ends of the seventh shaft member 47. The pair of storage spaces 26 have a sufficient width outside the pair of side walls 34 x of the fourth link 34.

  A shaft hole 25b is also formed in the other end of the raised portion 25 (the end closer to the side edge of the door 2). A shaft hole 21a is also formed on the same wall as the shaft hole 25b in a portion of the peripheral wall of the socket portion 21 close to the other end of the raised portion 25. The fifth shaft member 45 described above is inserted into the shaft holes 25b and 21a. In the pair of side walls 33x of the third link 33, only the distal end portion 33y forms a narrow interval, and the distal end portion 33y is inserted between the raised portion 25 and the peripheral wall of the socket portion 21, and The 5-axis member 45 is rotatably connected.

  The pair of side walls 33x of the third link 33 is bent at a front end portion in a direction substantially perpendicular to the longitudinal direction of the third link 33, and a front end portion 33y in the width direction thereof is bent at a substantially right angle to form a substantially U-shape. ing. As can be understood from FIG. 9, this is to avoid interference with the side edge of the door 2 when the door 2 is opened beyond 90 °.

  As shown in FIG. 6, when the door 2 closes the opening 1 a of the housing 1, the above-described bent portions of the pair of side walls 33 x of the third link 33 are paired with the socket portion 21 of the second hinge body 20. Are accommodated in the accommodation space 26. The seventh shaft member 47 is located in the inner space of the socket portion 21, and the bent portion of the side wall 33 x of the third link 33 is disposed on the extension, but the seventh shaft member 47 is located at the center of the inner space. Since it is supported by the raised portion 25 and does not cross the accommodation space 26, it does not interfere with the side wall 33x. Thus, the shape of the third link 33 and the position of the seventh shaft member 47 can be set without considering the interference between the seventh shaft member 47 and the third link 33, and the degree of freedom in design is improved. Can do. As a result, the width of the side wall 33x of the third link 33 can be increased to increase the strength.

  In the closed state of the door 2, a second shaft member 42, a pair of side walls of the base 12 connected via the second shaft member 42, and a second link 32 are inserted into the socket portion 21 of the second hinge body 20. The pair of side walls also enter. The raised portion 25 is formed with a recess 25c, and the second shaft member 42 can be received in the recess 25c. The side wall of the base 12 and the side wall of the second link 32 are accommodated in the accommodation space 26 between the side wall 33x of the third link 33 and the side wall 34x of the fourth link.

  FIG. 13 shows a state before the hinge device 3 is attached to the housing 1 and the door 2, and a state in which the second hinge body 20 is at a rotation limit position in a direction approaching the first hinge body 10. The second hinge body is biased in a direction approaching the first hinge body 10 by a spring 60 which will be described later. However, when the side wall 33x of the third link 33 hits the bottom surface of the socket portion 21, the rotation limit position is exceeded. Rotation is prohibited.

  In FIG. 13, an extension surface of the first installation surface 11x is indicated by a symbol P1, and an extension surface of the second installation surface 22x is indicated by a symbol P2. As can be easily confirmed from the extended surfaces P1 and P2, when the second hinge body 20 is at the rotation limit position, the first installation surface 11x and the second installation surface 22x are at an angle smaller than a right angle (for example, 87 °). ).

As shown in FIG. 13, when the second hinge body 20 is at the rotation limit position, the height H6 of the sixth shaft member 46 from the first installation surface 11x (the inner surface of the housing 1) is the height of the third shaft member 43. It is lower than the height H3 from the first installation surface 11x. This is expressed by the following formula.
H6 <H3 (1)
Therefore, the amount of protrusion in the vicinity of the sixth shaft member 46 can be suppressed, so that even when the hinge device 3 is mounted on the housing 1 and the door 2, the housing space is effectively used without interfering with the objects contained in the housing 1. be able to. Further, the hinge device 3 is not conspicuous even when viewed from the outside of the transparent door 2, and the appearance can be improved.

The height H3 can be expressed by the following formula.
H3 = H1 + L1 · sinΘ1 (2)
However, H1 is the height from the 1st installation surface 11x of the 1st shaft member 41, L1 is the length of the linear part between the shaft members 41 and 43 in the 1st link 31, Θ1 is the straight line concerned This is an angle of the portion with respect to the first installation surface 11x.

The height H6 can be expressed by the following formula.
H6 = H2 + L2 · sinΘ2 (3)
However, H2 is the height from the 1st installation surface 11x of the 2nd shaft member 42, L2 is the length of the linear part between the shaft members 42 and 46 in the 2nd link 32, and (THETA) 2 is the said linear part. Is an angle with respect to the first installation surface 11x.

Substituting Equations (2) and (3) into Equation (1) yields the following equation.
H2 + L2 · sinΘ2 <H1 + L1 · sinΘ1 (4)
In this embodiment, in order to satisfy Expression (4), the height H2 of the second shaft member 42 from the first installation surface 11x is lower than the height H1 of the first shaft member 41 from the first installation surface 11x. However, when this height difference is ΔH, it is designed to satisfy the following equation.
L2 · sinΘ2 <L1 · sinΘ1 + ΔH (5)

More specifically, in order to reduce the value of L2 · sin Θ2 on the left side of Equation (5), the following design is performed.
a. The length L2a of the straight portion between the shaft portions 42 and 44 in the second link 32 is made shorter than the distance L1 of the straight portion between the shaft members 41 and 43 in the first link 31. This is expressed by the following formula.
L2b <L1 (6)
b. An angle Θ2a of the straight portion between the shaft portions 42 and 44 in the second link 32 with respect to the first installation surface 11x is smaller than an angle Θ1 of the straight portion between the shaft members 41 and 43 in the first link 31 with respect to the first installation surface 11x. To do. This is expressed by the following formula.
Θ2a <Θ1 (7)
c. The length L2b of the straight portion between the shaft portions 44 and 46 in the second link 32 is made shorter than the length L2a of the straight portion between the shaft portions 42 and 44 in the second link 32. This is expressed by the following formula.
L2b <L2a (8)
d. An angle Θ2b of the straight portion between the shaft portions 44 and 46 in the second link 32 with respect to the first installation surface 11x is set to less than 90 °, and more preferably set to 70 ° or less. In this embodiment, it is 68 °. This is expressed by the following formula.
Θ2b <90 ° (9)

By shortening the lengths L2a and L2b and narrowing the angles Θ2a and Θ2b, the expression (5) can be satisfied reliably.
For the lengths L2a, L2b and the angles Θ2a, Θ2b, it is preferable to adopt a lower limit value in the range that does not hinder the opening and closing of the door 2 described later, or a value in the vicinity thereof.

  In the present embodiment, as shown in FIG. 6, the first installation surface 11x of the sixth shaft member 46 is also in the closed state of the door 2 (the first installation surface 11x and the second installation surface 22x are at right angles). The height H6 from (the inner surface of the housing 1) is lower than the height H3 from the first installation surface 11x of the third shaft member 43. Specifically, the above formulas (1) to (9) are satisfied even when the door 2 is closed.

Components that are not the gist of the present invention and are associated with the hinge device 3 will be briefly described.
As shown in FIGS. 3, 10, and 11, an engagement shaft 12 a is fixed to the base 12, and an engagement shaft 12 b urged by a spring 19 is movably supported. The base 12 is detachably attached to the washer 11 by fitting these engaging shafts 12 a and 12 b into the engaging recesses 11 a and 11 b of the washer 11.

As shown in FIGS. 3 and 10, the third shaft member 43 is provided with a spring 60 and a cam follower 61 urged by the spring 60 is rotatably supported. The cam follower 61 and the base 12 are supported. The door 2 is urged in a closing direction from a predetermined opening angle by a cam action with a cam 62 provided on the door.
3 and 10, reference numeral 65 indicates a resin spacer, and reference numeral 66 indicates a resin cover for filling a gap between the links.

  The operation of the hinge device 3 having the above configuration will be described. As shown in FIGS. 1 (A), 2 (A), 3, and 6, when the door 2 closes the opening 1a of the housing 1, the door 2 covers the end surface 1a of the housing 1 on the opening 1a side. ing. In this closed state, the hinge device 3 is in the reference state, and the first installation surface 11x of the first hinge body 10 and the second installation surface 22x of the second hinge body 20 are perpendicular to each other.

  When the door 2 is opened against the urging force in the closing direction, the door 2 is rotated in the opening direction by the hinge device 3 while the side edge of the door 2 moves away from the housing 1. Details will be described below.

  In the process of opening the door 2 by 90 ° from the closed position as shown in FIGS. 1 (B), 2 (B), and 4, the third link 33 is rotated by the rotation of the first link 31 and the second link 32. Move forward. Since the length L2a between the shaft members 42 and 44 in the second link 32 is shorter than the length L1 between the shaft members 41 and 43 of the first link 31, the second link 32 rotates at a larger angle than the first link 31. Move. In addition, since the straight portion between the shaft members 42 and 44 in the second link 32 falls to the first installation surface 11x side than the straight portion between the shaft members 41 and 43 of the first link 31, the door 2 rotates. In doing so, the third link 33 and thus the side edge of the door 2 ensure a sufficient amount of movement (amount of movement in a direction away from the case 1) to avoid interference with the side edge of the case 1. be able to.

  Further, as shown in FIGS. 1C, 2C, and 5, the door 2 can be opened to a set angle exceeding 90 ° (160 ° in this embodiment). When the set angle is reached, the fourth link 34 hits the socket portion 21 of the second hinge body 20 and further rotation is prohibited.

The present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.
In the above embodiment, not only when the second hinge body 20 is in the rotation limit position, but also when the door 2 is in the closed state (the first installation surface 11x and the second installation surface 22x are at right angles). The height H6 from the first installation surface 11x (the inner surface of the housing 1) of the six shaft member 46 is designed to be lower than the height H3 from the first installation surface 11x of the third shaft member 43. In the closed state of the door 2, the height H6 may be slightly higher than the height H3. Even in this case, the height H6 can be greatly reduced as compared with the conventional product.
When the 2nd hinge main body 20 exists in a rotation limit position, you may design so that the 1st installation surface 11x and the 2nd installation surface 22x may make a right angle.

The door 2 may not be transparent. Even in this case, when the door 2 starts to be opened, the portion of the hinge device 3 on the opening 1a side (the vicinity of the sixth shaft member 46) does not stand out, and the appearance can be improved.
In the closed state of the door 2, the second shaft member 32 may be located on the opposite side of the first shaft member 31 with the first installation surface 11x interposed therebetween. In this case, the height H2 is a negative value in the expressions (2) and (4).
The socket part may be formed by a pair of side walls and a bottom wall connecting these side walls.

  The present invention is applicable to a hinge device used for opening and closing a door.

1 body (first object)
2 Door (second target)
DESCRIPTION OF SYMBOLS 3 Hinge apparatus 10 1st hinge main body 11x 1st installation surface 20 2nd hinge main body 21 Socket part 22 ridge part 22x 2nd installation surface 31-34 1st-4th link 41-47 1st-7th shaft member

Claims (7)

A first hinge body having a first installation surface;
A second hinge body having a second installation surface;
A first link having one end rotatably connected to an end of the first hinge body opposite to the second hinge body via a first shaft member;
A second link having one end rotatably connected to an end of the first hinge body on the second hinge body side via a second shaft member;
One end portion is rotatably connected to the other end portion of the first link via a third shaft member, and the intermediate portion is rotatable to the intermediate portion of the second link via a fourth shaft member. A third link connected to the second hinge body, the other end of which is rotatably connected via a fifth shaft member;
One end of the second link is pivotally connected to the other end of the second link through a sixth shaft member, and the second hinge body is separated from the fifth shaft member by a seventh shaft member. A fourth link having the other end rotatably connected thereto;
In the hinge device with
In a state where the second hinge body is at a rotation limit position in a direction approaching the first hinge body, the height of the sixth shaft member from the first installation surface is the first of the third shaft member. A hinge device characterized by being lower than the height from the installation surface. The height of the first shaft member from the first installation surface is H1, the height of the second shaft member from the first installation surface is H2, and the first shaft member in the first link and the height The length of the straight portion between the third shaft member is L1, the angle of the straight portion with respect to the first installation surface is Θ1, and the second link member and the sixth shaft member in the second link are A state in which the second hinge body is at a rotation limit position in a direction approaching the first hinge body when the length of the straight line portion is L2 and the angle of the straight line portion with respect to the first installation surface is Θ2. so,
H2 + L2 · sinΘ2 <H1 + L1 · sinΘ1
The hinge device according to claim 1, wherein:   The hinge device according to claim 2, wherein a height H2 of the second shaft member from the first installation surface is lower than a height H1 of the first shaft member from the first installation surface. When the length of the straight portion between the second shaft member and the fourth shaft member in the second link is L2a, and the angle of the straight portion with respect to the first installation surface is Θ2a, the second hinge In a state where the main body is at the rotation limit position in the direction approaching the first hinge main body,
L2a <L1 and Θ2a <Θ1
The hinge device according to claim 3, wherein: When the length of the straight portion between the fourth shaft member and the sixth shaft member in the second link is L2b, and the angle of the straight portion with respect to the first installation surface is Θ2b, the second hinge In a state where the main body is at the rotation limit position in the direction approaching the first hinge main body,
L2b <L2a and Θ2b <90 °
The hinge device according to claim 4, wherein:   In a state where the first installation surface and the second installation surface form a right angle, the height of the sixth shaft member from the first installation surface is higher than the height of the third shaft member from the first installation surface. The hinge device according to claim 1, wherein the hinge device is low. The first hinge body is fixed in a state where the first installation surface is applied to the inner surface of the opening side edge of the housing as the first object,
The second hinge body has a socket portion and a flange portion, and the second installation surface is formed on the flange portion, and the socket portion is formed on a surface of a side edge portion of a door as a second object. In the state where the second installation surface is applied to the surface of the door, and the flange portion is fixed to the surface of the door.
The fifth shaft member and the seventh shaft member are coupled to the socket portion,
The hinge device according to any one of claims 1 to 6, wherein the first installation surface and the second installation surface form a right angle in a state where the door closes the opening.

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