Hinge device

Abstract

A hinge device 3 comprises a first hinge body 10, a second hinge body 20, and a connection mechanism 30 that connects the hinge bodies 10, 20 so as to be rotatable around a rotation axis. One hinge body 20 includes a base member 21, a shaft support member 26, and a position adjustment mechanism P for adjusting the position of the shaft support member 26 in a direction toward or away from the base member 21. An adjustment screw 40 of the position adjustment mechanism P is rotatably connected to a first connecting portion 24 of the base member 21 and is also screwed to a second connecting portion 28 of the shaft support member 26 to adjust the position of the shaft support member 26. A stopper mechanism 50 includes a first locking portion 51 provided on the base member 21 and a second locking portion 52a provided on the shaft support member 26. In the process of position adjustment by the adjustment screw 40, the first and second locking portions 51, 52a come into contact with each other, whereby the shaft support member 26 is restricted from moving in a direction away from the base member, and thereby the threaded engagement between the adjustment screw 40 and the shaft support member 26 is maintained.

Description

Hinge device

[0001] The present invention relates to a hinge device, and more particularly to a hinge device for rotatably mounting a rotating object such as a door to a stationary object such as a door frame.

[0002] The hinge device disclosed in Patent Document 1 (JP 2022-114234 A) comprises a first hinge body fixed to the side frame portion of the door frame, a second hinge body fixed to the door, and a connecting mechanism that rotatably connects the first and second hinge bodies.

[0003] FIG. 6 and paragraph 0019 of Patent Document 1 disclose a position adjustment function for adjusting the position of the door in the left-right direction of the door frame. Briefly, the second hinge body includes a base member, a pivot member, and a position adjustment mechanism for adjusting the position of the pivot member in a direction toward or away from the base member. The pivot member rotatably supports at least one pivot member of the connecting mechanism. The position adjustment mechanism includes an adjustment screw. This adjustment screw is rotatably connected to the base member while being prohibited from moving axially, and is threadedly engaged with the pivot member. By turning the adjustment screw, the position of the pivot member can be adjusted, thereby adjusting the position of the door in the left-right direction of the door frame.

[0004] In the hinge device of Patent Document 1, when the door is connected to the door frame by the hinge device and the adjustment screw is turned to adjust the position of the door relative to the door frame, if the adjustment screw is turned too far in an attempt to move the door away from the side frame portion of the door frame, the adjustment screw may become disengaged from the shaft support member.

[0005] In order to solve the above problems, the present invention provides a hinge device comprising a first hinge body, a second hinge body, and a connecting mechanism that rotatably connects the first hinge body and the second hinge body around a rotation axis, wherein either one of the first and second hinge bodies has a base member, a pivotal support member that supports at least one pivot member of the connecting mechanism, and at least one position adjustment mechanism that adjusts the position of the pivotal support member in a direction toward or away from the base member, the base member has at least one first connecting portion, and the pivotal support member has at least one second connecting portion arranged opposite to the first connecting portion, the position adjustment mechanism includes an adjustment screw that is rotatably connected to the first connecting portion of the base member while movement of the adjustment screw in its axial direction is prohibited, and is threadedly engaged with the second connecting portion of the pivotal support member, so that the position of the pivotal support member with respect to the base member can be adjusted by turning the adjustment screw, The device further comprises at least one stopper mechanism, which includes a first locking portion provided on the base member and a second locking portion provided on the pivot support member, and the first and second locking portions come into contact with each other during the process of position adjustment using the adjustment screw, thereby restricting the pivot support member from moving in a direction away from the base member, thereby maintaining the threaded state of the adjustment screw and the pivot support member.

[0006] According to the above-described configuration, during the process of adjusting the position of the support member using the adjustment screw, the first and second locking portions come into contact with each other, thereby restricting the support member from moving in a direction away from the base member, thereby preventing the inconvenience of turning the adjustment screw too far and releasing the threaded engagement between the support member and the adjustment screw.

[0007] In one aspect, the support member includes a pair of divided bodies spaced apart from each other in the direction of the rotation axis, each of the pair of divided bodies having the second connecting portion, and each of the pair of divided bodies being positioned by the corresponding position adjustment mechanism and having its movement restricted by the corresponding stopper mechanism.

[0008] In one aspect, the base member has a pair of first opposing portions spaced apart in the rotation axis direction, and each of the pair of segments of the pivot support member has a second opposing portion that remains closely opposed to the first opposing portion during position adjustment of the segment, with the first and second engaging portions provided, respectively. In the above aspect, preferably, one of the first and second opposing portions has an elongated hole extending in the direction of position adjustment of the pivot support member, with one end of the elongated hole serving as one of the first and second engaging portions, and the other of the first and second opposing portions has an engaging protrusion that protrudes toward the one of the first and second opposing portions and is inserted into the elongated hole, with the engaging protrusion serving as the other of the first and second engaging portions. With this configuration, the elongated hole and the engaging protrusion provide a reliable engaging function. Furthermore, the sliding of the engaging protrusion relative to the elongated hole also serves as a guide for the pivot support member, allowing for stable position adjustment of the pivot support member. The locking projection may be a stopper pin.

[0009] In one aspect, an accommodating recess is formed in an attachment target to which the one hinge body is to be attached, the pair of divided bodies of the base member and the pivot support member are accommodated in the accommodating recess, and when the first hinge body and the second hinge body are in opposing rotation positions, the connecting mechanism is accommodated in the accommodating recess. In the above aspect, preferably, the pair of first opposing portions of the base member are made of guide plate portions that are spaced apart and opposed to each other in the rotation axis direction, the second opposing portions of the pair of divided bodies of the pivot support member are made of support plate portions that contact inner surfaces of the guide plate portions, and both ends of the at least one pivot member of the connecting mechanism are supported by the support plate portions of the pair of divided bodies.

[0010] In one aspect, the hinge further includes a cover that covers one of the hinge bodies, the cover having a pair of shielding portions spaced apart in the direction of the rotation axis and a bridging portion that connects the pair of shielding portions and is arranged along the side edge of the accommodating recess, the pair of shielding portions shielding the second connecting portions of the pair of divided bodies of the pivot support member and the adjustment screw, pivot support member side engaging portions are formed on each of the second connecting portions of the pair of divided bodies, and cover side engaging portions are formed on each of the pair of shielding portions of the cover, and the pivot support member side engaging portions engage with the cover side engaging portions, thereby allowing the cover to be removably attached to the pivot support member.

[0011] In the above aspect, preferably, the pivotal support member-side engaging portion includes a pair of clamping portions facing each other in a direction perpendicular to the rotation axis direction and the pivotal support member position adjustment direction, at least one protrusion extending linearly in the rotation axis direction is formed on the opposing surfaces of the pair of clamping portions, and the cover-side engaging portion includes an insertion protrusion protruding in the position adjustment direction and inserted into the pair of clamping portions, a pair of outer surfaces of the insertion protrusion facing the pair of clamping portions having an uneven shape in which protrusions and recesses extending linearly in the rotation axis direction are alternately arranged in the pivotal support member position adjustment direction, and the protrusions of the pair of clamping portions engage with the uneven shape of the insertion protrusion. With this configuration, the cover can be engaged by bringing it close to the pivotal support member, allowing it to be easily attached to the pivotal support member. Furthermore, by inserting the insertion protrusion into the pair of clamping portions, the cover can maintain a stable attached state against forces in a direction perpendicular to the rotation axis direction and the pivotal support member position adjustment direction.

[0012] According to the present invention, when adjusting the position of the pivot support member in the hinge body in a direction toward or away from the base member using the adjustment screw, it is possible to prevent the inconvenience of turning the adjustment screw too far and releasing the threaded engagement between the pivot support member and the adjustment screw.

[0013] 1 is a perspective view showing a state in which a door is rotatably connected to a door frame by a hinge device according to a first embodiment of the present invention. FIG. 2 is a perspective view showing the hinge device with the covers of the first and second hinge bodies omitted. FIG. 3 is an exploded perspective view of the hinge device. FIG. 4 is an exploded perspective view of the second hinge body. FIG. 5 is a perspective view of the second hinge body after assembly is complete. FIG. 6 is a perspective view of the second hinge body showing a state in which the pivot member is separated from the base member to the maximum extent by position adjustment. FIG. 7 is a vertical cross-sectional view of the second hinge body after assembly is complete, the cross-section passing through the stopper mechanism. FIG. 8 is a vertical cross-sectional view showing a state in which the second hinge body of the hinge device is accommodated in an accommodating recess of the door, the cross-section passing through the adjustment screw. FIG. 9 is a perspective view showing a state in which a cover has been attached to the second hinge body. FIG. 10 is an enlarged perspective view of essential parts showing a process of attaching a cover to the second hinge body. FIG. 11 is an enlarged perspective view of essential parts showing a state in which attachment of the cover to the second hinge body has been completed. FIG. 12 is a horizontal cross-sectional view showing the door (and hinge device) in a fully open state (open 110°). Fig. 1 is a cross-sectional view showing the door (and hinge device) in a 90° open state, Fig. 2 is a cross-sectional view showing the door (and hinge device) in a closed state, Fig. 3 is an exploded perspective view of a second hinge body of a hinge device according to a second embodiment of the present invention.

[0014] A hinge device according to a first embodiment of the present invention will be described below with reference to Figures 1 to 11. A door frame of a house is a vertically long rectangle, and a side edge of a door 2 (second attachment target) is connected to either the left or right side frame portion 1 (first attachment target) of the door frame by a pair of upper and lower hinge devices 3 so as to be rotatable about a rotation axis extending vertically.

[0015] <General configuration of hinge device> The hinge device 3 of this embodiment is called a hidden hinge, and as shown in Figures 1 and 2, it has as basic components a first hinge body 10 attached to an inner surface 1a of the side frame portion 1 of the door frame that faces the door opening, a second hinge body 20 attached to an edge surface 2a of the side edge portion of the door 2 (i.e., the surface that faces the inner surface 1a of the door frame 1 when the door 2 is closed), and a connecting mechanism 30 that connects the first hinge body 10 and the second hinge body 20 rotatably around the rotation axis.

[0016] 2 and 3, the first hinge body 10 is divided (in the direction of the rotation axis) into two segments 10X, one above the other. Each segment 10X of the first hinge body 10 is made of an L-shaped metal angle bar and has a vertical fixing plate portion 15 and a horizontal support plate portion 16. The support plate portions 16 of the upper and lower segments 10X are arranged opposite each other, and each support plate portion 16 has two bearing holes 16a, 16b formed therein.

[0017] 2 to 5, the second hinge body 20 mainly comprises an elongated base member 21 made of a single metal bracket, and a pivot support member 26. The pivot support member 26 includes a split body 26X made of a pair of metal blocks split vertically (in the direction of the rotation axis).

[0018] The base member 21 has a bottom plate portion 22 extending vertically, a pair of guide plate portions 23 (first opposing portions) extending horizontally from the upper and lower edges of the bottom plate portion 22 and facing each other vertically, and a pair of vertical plate portions extending vertically apart from the tip edges of the guide plate portions 23. The upper vertical plate portion has a connecting plate portion 24 (first connecting portion) and a fixing plate portion 25, arranged in this order from the upper guide plate portion 23 upward. Similarly, the lower vertical plate portion has a connecting plate portion 24 (first connecting portion) and a fixing plate portion 25, arranged in this order from the lower guide plate portion 23 downward. The fixing plate portion 25 is biased closer to the bottom plate portion 22 than the connecting plate portion 24. A screw support hole 24a, which serves a function described below, is formed in the connecting plate portion 24.

[0019] The upper and lower divided bodies 26X of the shaft support member 26 each have a horizontal support plate portion 27 (second opposing portion) and a vertical connecting plate portion 28 (second connecting portion). A screw hole 28a is formed in the connecting plate portion 28. The connecting plate portions 28 of the upper and lower divided bodies 26X are disposed opposite the upper and lower connecting plate portions 24 of the base member 21, respectively. The support plate portions 27 of the upper and lower divided bodies 26X each have two bearing holes 27a, 27b.

[0020] <Position Adjustment Mechanism> The pair of segments 26X of the pivot support member 26 are connected to the base member 21 by a pair of position adjustment mechanisms P so that their positions can be adjusted in the approaching / separating directions. More specifically, each position adjustment mechanism P includes an adjustment screw 40 as a main component. As shown in FIG. 4 , the adjustment screw 40 has, in order, a male thread portion 41, a flange portion 42, and a tip portion 43. The tip portion 43 of the adjustment screw 40 is inserted into the screw support hole 24a of the connecting plate portion 24 of the base member 21, and a washer 45 is passed through the tip portion 43, and then the tip portion 43 is crimped, thereby sandwiching the connecting plate portion 24 between the flange portion 42 and the washer 45. In this way, the adjustment screw 40 is connected to the connecting plate portion 24 in a manner that allows it to rotate but prevents it from moving axially.

[0021] The threaded hole 28a of the connecting plate portion 28 of the divided body 26X of the axial support member 26 is aligned with the base end of the male threaded portion 41 of the adjustment screw 40, and a tool is inserted into the tool hole on the base end surface of the adjustment screw 40 and turned, thereby threading the male threaded portion 41 into the threaded hole 28a. In this manner, the pair of divided bodies 26X of the axial support member 26 are connected to the base member 21 (see FIG. 5A ). The position of the divided body 26X relative to the base member 21 is adjusted depending on the depth to which the adjustment screw 40 is threaded into the threaded hole 28a. This position adjustment will be described later. Note that during this position adjustment, the support plate portion 27 of the upper divided body 26X of the axial support member 26 is substantially in contact with (closely facing) the lower surface of the upper guide plate portion 23 of the base member 21, and the support plate portion 27 of the lower divided body 26X is substantially in contact with (closely facing) the upper surface of the lower guide plate portion 23 of the base member 21.

[0022] <Regarding the Stopper Mechanism> As shown in Figures 5 and 6, the second hinge body 20 is equipped with a pair of upper and lower stopper mechanisms 50. These stopper mechanisms 50 are intended to prevent the divided body 26X of the pivotal support member 26 from falling off the base member 21 when the position of the pivotal support member 26 is adjusted, as described below. More specifically, as shown in Figure 4, each stopper mechanism 50 includes a stopper pin 51 (locking protrusion; first locking portion), an elongated hole 52 formed in the support plate portion 27 of the divided body 26X of the pivotal support member 26, and a pin support hole 53 formed in the guide plate portion 23 of the base member 21. The elongated hole 52 extends in a direction that moves the divided body 26X toward or away from the base member 21. The stopper pin 51 has, in order, a head portion 51a, an insertion portion 51b, and a small-diameter portion 51c.

[0023] With the support plate portion 27 of the pivot support member 26 placed on the guide plate portion 23 of the base member 21, the stopper pin 51 is inserted through the elongated hole 52 of the support plate portion 27 and the pin support hole 23a of the guide plate portion 23, and the tip of the small diameter portion 51c protruding from the guide plate portion 23 is crimped, thereby fixing the stopper pin 51 in a predetermined position on the guide plate portion 23. The stopper pin 51 is slidable in the elongated hole 52 of the pivot support member 26. One end 52a of the elongated hole 52 on the base member 21 side serves as a second locking portion that locks the stopper pin 51.

[0024] <Regarding the coupling mechanism> The coupling mechanism 30 couples the support plate portions 16 of the pair of segments 10X of the first hinge body 10 and the support plate portions 27 of the pair of segments 26X of the pivot support member 26 of the second hinge body 20 so as to be rotatable relative to each other, and as shown in Figures 3 and 11A, has a first link 31, a second link 32, and four shaft members 35 to 38 extending vertically. These shaft members 35 to 38 provide the rotation axis when the second hinge body 20 rotates relative to the first hinge body 10.

[0025] The shaft member 35 is inserted through one of the support holes 31a of the first link 31, and its upper and lower ends are inserted into bearing holes 16a formed in the support plate portions 16 of the pair of segments 10X of the first hinge body 10. The shaft member 36 is inserted through one of the support holes 32a of the second link 32, and its upper and lower ends are inserted into bearing holes 16b of the support plate portions 16 of the pair of segments 10X. The shaft member 37 is inserted through the other of the support holes 31b of the first link 31, and its upper and lower ends are inserted into bearing holes 27a formed in the support plate portions 27 of the pair of segments 26X of the pivot support member 26 of the second hinge body 20. The shaft member 38 is inserted through the other of the support holes 32b of the second link 32, and its upper and lower ends are inserted into bearing holes 27b of the support plate portions 27 of the pair of segments 26X.

[0026] <Connection of Door Frame and Door by Hinge Device> As shown in FIG. 7 , a vertically elongated storage recess 2b is formed on the edge surface 2a of the door 2. The storage recess 2b is deeper in the center and shallower at the top and bottom. A second hinge body 20 is housed and fixed in the storage recess 2b. Specifically, the upper and lower fixing plate portions 25 of the base member 21 are fixed to the bottom surfaces of the upper and lower portions of the storage recess 2b, and the bottom plate portion 22 and guide plate portion 23 of the base member 21 are housed in the center portion of the storage recess 2b. A pair of segments 26X of the pivot support member 26 of the second hinge body 20 are also housed in the storage recess 2b. Meanwhile, as shown in FIG. 1 , the fixing plate portions 15 of a pair of segments 10X of a pair of upper and lower first hinge bodies 10 are fixed to the inner surfaces 1a of the side frame portions 1 of the door frame.

[0027] As described above, the first hinge body 10 of the hinge device 3 is fixed to the side frame portion 1 of the door frame, and the second hinge body 20 is fixed to the door 2, so that the door 2 is rotatably connected to the door frame 1 by the hinge device 3.

[0028] <Position Adjustment> In the hinge device 3 of this embodiment, the position of the door 2 can be adjusted in the left-right direction of the door frame 1 while the door 2 is connected to the door frame 1. This position adjustment makes it possible to appropriately adjust the distance between the side edge of the door 2 on the door leading side and the door frame 1 when the door 2 is closed, for example. This position adjustment can be performed by operating the adjustment screw 40 in the second hinge body 20 to adjust the positions of the pair of segments 26X of the pivot support member 26 in the approaching / separating direction relative to the base member 21.

[0029] As described above, the hinge device 3 is provided with the stopper mechanism 50, which restricts movement of the divided bodies 26X when adjusting the positions of the pair of divided bodies 26X of the pivot support member 26. As a result, it is possible to avoid the inconvenience of excessively turning the adjustment screw 40 to separate the divided body 26X from the base member 21, causing the adjustment screw 40 and the divided body 26X to become unthreaded and come off the base member 21.

[0030] More specifically, when the adjustment screw 40 is turned so as to move the divided body 26X of the pivot support member 26 away from the base member 21, the stopper pin 51 comes into contact with one end 52a of the elongated hole 52, preventing the divided body 26X from moving any further away from the base member 21. As a result, the threaded engagement between the adjustment screw 40 and the connecting plate portion 28 of the divided body 26X is maintained. The stopper pin 51 and the elongated hole 52 can also serve as a guide for linearly adjusting the position of the divided body 26X.

[0031] <Attaching Covers> The hinge device 3 is provided with multiple covers made of metal or resin to improve its appearance. Each cover will be described in detail below. As shown in FIGS. 1 and 3 , covers 61 are attached to the fixing plate portions 15 of the pair of upper and lower segments 10X of the first hinge body 10, respectively, to cover these fixing plate portions 15. A cover 62 that covers the connecting mechanism 30 is fixed to the support plate portions 16 of the pair of segments 10X of the first hinge body 10 by elongated pins 63 (see FIG. 3 ) or the like.

[0032] 1 and 2, the cover 70 that covers the second hinge body 20 is vertically long and has shielding portions 71 at both the upper and lower ends, a long and narrow bridge portion 72 in the middle, and side wall portions 73 that fit into the accommodating recess 2b. As shown in Figures 1, 7, and 8, the upper and lower shielding portions 71 of the cover 70 are configured to hide the upper and lower parts of the accommodating recess 2b of the door 2, the connecting plate portions 28 of the pair of segments 26X of the pivot support member 26, and the adjusting screws 40 that are threaded into these connecting plate portions 28. The bridge portions 72 are arranged along the side edges of the accommodating recess 2b so as to allow the connecting mechanism 30, which will be described later, to fit into the accommodating recess 2b.

[0033] The mounting structure of the cover 70 will now be described in detail. As shown in Figures 2, 8, and 9, the upper end of the connecting plate portion 28 of the upper divided body 26X of the pivotal member 26 and the lower end of the connecting plate portion 28 of the lower divided body 26X each have a pair of clamping portions 29 (pivot-support-member-side engaging portions) that face each other in a direction perpendicular to the rotation axis direction and the position adjustment direction of the pivotal member 26. Meanwhile, a hollow insertion protrusion 75 (cover-side engaging portion) that protrudes in the position adjustment direction of the divided body 26X is formed on the back surface (the surface facing the second hinge body 20) of each of the pair of shielding portions 71 of the cover 70. The cross section of the base end of the insertion protrusion 75 is U-shaped, and the cross section of the tip end is a vertically long oval.

[0034] At least one protrusion 29a extending linearly in the rotation axis direction is formed on each of the flat inner opposing surfaces of the pair of clamping portions 29. The outer surface of the insertion protrusion 75 of the cover 70 facing the pair of clamping portions 29 has an uneven shape 75a formed by alternating concave and convex portions extending linearly in the rotation axis direction in the position adjustment direction of the divided body 26X.

[0035] After adjusting the positions of the segments 26X of the pivot support member 26 as described above, when the cover 70 is brought closer to the second hinge body 20, as shown in FIG. 10 , the insertion protrusions 75 at the upper and lower ends of the cover 70 enter between the pair of clamping portions 29 of the connecting plate portions 28 of the pair of segments 26X, accompanied by elastic deformation of at least one of them, and the concave-convex shapes 75a and the protrusions 29a engage with each other. As a result, the cover 70 is attached to the second hinge body 20. In this attached state, the pair of shielding portions 71 of the cover 70 cover the connecting plate portions 28 of the pair of segments 26X and the adjustment screws 40. By inserting the insertion protrusions 75 into the pair of clamping portions 29, the cover 70 can maintain a stable attached state even against forces in the lateral direction (a direction perpendicular to the rotation axis direction and the direction in which the position of the pivot support member 26 is adjusted). Furthermore, the cover 70 can be removed by applying a pulling force in the opposite direction to release the engagement between the uneven shape 75a and the protrusion 29a, and the position of the pair of divided bodies 26X of the support member 26 can be readjusted.

[0036] <Door Opening and Closing Operation> A brief description will be given of the opening and closing operation of the door 2. As shown in Figures 1 and 11A, when the door 2 is in the fully open position (the 110° open position in this embodiment), approximately half of the coupling mechanism 30 is outside the accommodation recess 2b of the door 2. In this case, the first hinge body 10, coupling mechanism 30, and second hinge body 20 are covered by the covers 61, 62, and 70, so that a good appearance can be maintained.

[0037] When the door 2 is rotated in the closing direction, it reaches the 90° open position shown in Figure 11B. At this position, the portion of the coupling mechanism 30 located outside the storage recess 2b decreases. When the door 2 is further rotated in the closing direction, it reaches the closed position shown in Figure 11C. At this position, the coupling mechanism 30 is housed within the storage recess 2b. The pivot support member 26 is composed of a pair of divided bodies 26X spaced apart from each other in the vertical direction, and the support plate portions 27 of the pair of divided bodies 26X are substantially in contact with the guide plate portion 23 of the base 21, so that the space of the storage recess 2b in which the coupling mechanism 30 is housed can be used efficiently.

[0038] 12 shows a hinge device according to a second embodiment of the present invention. In a second hinge body 20A of this embodiment, the base member is made up of a pair of divided bodies 21A, the pivot support member 26A is made up of a single, elongated member, and the upper and lower support plate portions 27 of the pivot support member 26A are connected by a bridging plate portion 100. Since the other configurations are the same as those of the first embodiment, the same numbers are used and detailed description will be omitted.

[0039] The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit and scope of the present invention. Various numbers of links and shaft members of the connecting mechanism can be adopted. Furthermore, the connecting mechanism may be configured with a single shaft member connecting the shaft support members of the first hinge body and the second hinge body without using links. The first hinge body may be configured with a base member and a shaft support member, and a positioning mechanism and a stopper mechanism may be incorporated into this first hinge body. An accommodating recess for accommodating the connecting mechanism may be formed in the object to which the first hinge body is attached, or an accommodating recess may be formed in both the object to which the first and second hinge bodies are attached. Furthermore, an accommodating recess for accommodating the connecting mechanism may not be formed.

[0040] The first and second hinge bodies may be attached to various locations. For example, the second hinge body may be attached to the back surface of the door rather than the edge (small edge) of the door. The present invention may also be used as a hinge device for furniture, etc. In this case, for example, the first hinge body is fixed to the furniture case, and the second hinge body is fixed to the door. The rotation axis of the hinge device may extend horizontally.

[0041] The present invention can be applied to hinge devices used in doors of buildings, furniture, etc.

[0042] 2 Door (mounting object) 2b Storage recess 3 Hinge device 10 First hinge body 20 Second hinge body 21 Base member 23 Guide plate portion (first opposing portion) 24 First connecting portion 26 Pivot support member 26X Divided body 27 Support plate portion (second opposing portion) 28 Second connecting portion 29 Pair of clamping portions (pivot support member side engaging portion) 29a Protrusion 30 Connecting mechanism 37, 38 Pivot member 40 Adjusting screw 50 Stopper mechanism 51 Stopper pin (locking protrusion; first locking portion) 52 Elongated hole 52a One end of elongated hole (second locking portion) 70 Cover 71 Shielding portion 72 Bridging portion 75 Insertion convex portion (cover side engaging portion) 75a Concave and concave shape P Position adjustment mechanism

Claims

1. A hinge device comprising a first hinge body, a second hinge body, and a connecting mechanism that rotatably connects the first hinge body and the second hinge body around a rotation axis, wherein either one of the first and second hinge bodies has a base member, a pivotal support member that supports at least one pivot member of the connecting mechanism, and at least one position adjustment mechanism that adjusts the position of the pivotal support member in a direction toward or away from the base member, wherein the base member has at least one first connecting portion, and the pivotal support member has at least one second connecting portion arranged opposite to the first connecting portion, and the position adjustment mechanism includes an adjustment screw that is rotatably connected to the first connecting portion of the base member while being prohibited from moving axially, and is screwed into the second connecting portion of the pivotal support member, so that the position of the pivotal support member can be adjusted relative to the base member by turning the adjustment screw, The hinge device further comprises at least one stopper mechanism, the stopper mechanism including a first locking portion provided on the base member and a second locking portion provided on the pivot support member, and the first and second locking portions come into contact with each other during the process of position adjustment using the adjustment screw, thereby restricting the pivot support member from moving in a direction away from the base member, thereby maintaining the threaded engagement between the adjustment screw and the pivot support member.

2. The hinge device described in claim 1, characterized in that the support member includes a pair of divided bodies spaced apart from each other in the direction of the rotation axis, each of the pair of divided bodies having the second connecting portion, and each of the pair of divided bodies having its position adjusted by the corresponding position adjustment mechanism and its movement restricted by the corresponding stopper mechanism.

3. A hinge device as described in claim 2, characterized in that the base member has a pair of first opposing portions spaced apart in the direction of the rotation axis, and each of the pair of divided bodies of the support member has a second opposing portion that is maintained in a state of being close to and opposing the first opposing portion during the process of adjusting the position of the divided body, and the first and second engaging portions are provided on the first and second opposing portions, respectively.

4. A hinge device as described in claim 3, characterized in that an elongated hole extending in the position adjustment direction of the pivot support member is formed in one of the first and second opposing parts, one end of the elongated hole being provided as one of the first and second engaging parts, and a locking protrusion is provided in the other of the first and second opposing parts, protruding toward the one of the opposing parts and inserted into the elongated hole, and the locking protrusion is provided as the other of the first and second engaging parts.

5. The hinge device according to claim 4, wherein the locking projection is a stopper pin.

6. A hinge device as described in claim 3, characterized in that an accommodating recess is formed in the mounting object to which the one hinge body is to be mounted, the pair of divided bodies of the base member and the pivot support member are accommodated in the accommodating recess, and when the first hinge body and the second hinge body are in opposing rotation positions, the connecting mechanism is accommodated in the accommodating recess.

7. A hinge device as described in claim 6, characterized in that the pair of first opposing portions of the base member are guide plate portions that are spaced apart and opposing in the direction of the rotation axis, the second opposing portions of the pair of divided bodies of the shaft support member are support plate portions that contact the inner surfaces of the guide plate portions, and both ends of the at least one shaft member of the connecting mechanism are supported by the support plate portions of the pair of divided bodies.

8. The hinge device according to claim 2, further comprising a cover that covers one of the hinge bodies, the cover having a pair of shielding portions spaced apart in the direction of the rotation axis and a bridging portion that connects the pair of shielding portions and is arranged along the side edge of the accommodating recess, the pair of shielding portions shielding the second connecting portions of the pair of divided bodies of the pivot support member and the adjustment screw, the second connecting portions of the pair of divided bodies each having a pivot support member side engaging portion, and the pair of shielding portions of the cover each having a cover side engaging portion, the pivot support member side engaging portions engaging with the cover side engaging portions, thereby allowing the cover to be detachably attached to the pivot support member.

9. The hinge device described in claim 8, characterized in that the pivot support member side engaging portion includes a pair of clamping portions facing each other in a direction perpendicular to the rotation axis direction and the position adjustment direction of the pivot support member, and at least one protrusion extending linearly in the rotation axis direction is formed on the opposing surfaces of the pair of clamping portions, the cover side engaging portion includes an insertion protrusion protruding in the position adjustment direction and inserted into the pair of clamping portions, and a pair of outer surfaces of the insertion protrusion facing the pair of clamping portions have an uneven shape in which protrusions and recesses extending linearly in the rotation axis direction are arranged alternately in the position adjustment direction of the pivot support member, and the protrusion of the pair of clamping portions engages with the uneven shape of the insertion protrusion.

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