Furniture hinge structure
The hinge structure simplifies door attachment and detachment in furniture by using an inclined lower plate and stopper mechanism, providing a user-friendly solution for easy door handling.
Patent Information
- Application Number
- JP2023217009
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2023-12-22
- Publication Date
- 2025-07-03
AI Technical Summary
Conventional furniture hinge structures require complex operations and tools for attaching and detaching doors, making them cumbersome for users.
A hinge structure with an upper pivot embedded in the door and a lower pivot supported by an inclined lower plate, allowing easy attachment and detachment by tilting and pulling the door without tools, using a stopper to secure the pivot in place.
Enables a simple and effortless door attachment and removal process, eliminating the need for tools and reducing operational complexity.
Smart Images
Figure 2025099972000001_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a hinge structure for furniture that supports the opening and closing of doors used, for example, in cabinets as furniture.
Background Art
[0002] Conventionally, there has been known a pivot hinge having a receiving portion provided on the frame of a cabinet door and shaft portions provided at the upper and lower end portions of the door, and the door is supported so as to be openable and closable by the engagement of the receiving portion of the frame and the shaft portions of the door (see, for example, Non-Patent Document 1).
Prior Art Documents
Non-Patent Documents
[0003]
Non-Patent Document 1
[0004] In the hinge structure of the door using this pivot hinge, the shaft portion of the lower pivot embedded in the lower side of the door projects from the lower surface of the door in a telescopic manner, and the shaft portion of the upper pivot provided on the upper side of the door projects from the upper surface and does not telescope.
[0005] A horizontal hole is formed in the socket portion of the lower pivot in this pivot hinge, and a horizontal hole communicating with the horizontal hole of the socket portion is also formed on the side surface of the door. An operating portion for releasing the engaged state in which the shaft portion of the lower pivot penetrates into the receiving portion of the frame is provided in the horizontal hole of the socket portion of the lower pivot.
[0006] Therefore, in order to release the engaged state between the lower pivot of the door and the receiving portion of the frame, it is necessary to insert a predetermined tool through the horizontal hole formed on the side surface of the door and operate the operating portion of the horizontal hole of the socket portion of the lower pivot.
Summary of the Invention
Problems to be Solved by the Invention
[0007] By the way, in the hinge structure described in Non-Patent Document 1, it is necessary to align the horizontal hole of the door and the horizontal hole of the lower pivot so as to face each other, or the door cannot be removed from or attached to the frame without using a predetermined tool. There is a problem that the configuration is complicated and the user is forced to perform complicated and troublesome operations.
[0008] The present invention has been made in view of the above points, and an object thereof is to provide a hinge structure for furniture having a simple configuration and being easy to attach or remove a door.
Means for Solving the Problems
[0009] In order to solve such problems, in the hinge structure for furniture of the present invention, a frame body, a door, an upper hinge and a lower hinge for supporting the door so as to be openable and closable with respect to the frame body are provided. The upper hinge includes an upper pivot embedded in the upper end surface of the door, and an upper plate fixed to the ceiling surface of the frame body facing the upper pivot and engaged with the shaft portion of the upper pivot. The lower hinge includes a lower pivot embedded in the lower end surface of the door, and a lower plate fixed to the bottom surface of the frame body facing the lower pivot and engaged with the shaft portion of the lower pivot. The lower plate has an inclined portion for tilting the door while sliding the tip of the shaft portion of the lower pivot.
[0010] In the present invention, it is preferable that the shaft portion of the lower pivot moves along the inclined portion of the lower plate.
[0011] In the present invention, it is preferable that a stopper is detachably attached to the lower plate at a position adjacent to the inclined portion.
[0012] In the present invention, the lower plate has a plate-shaped lower plate body having the inclined portion, and a cylindrical body fixed integrally with the lower plate body. It is preferable that a protrusion having an outer diameter slightly larger than the inner diameter of the columnar concave portion provided on the bottom surface of the frame body is formed on the outer peripheral surface of the cylindrical body.
[0013] In the present invention, it is preferable that the stopper has an arcuate inner peripheral surface that rotatably holds the shaft portion of the lower pivot when attached to the lower plate.
Advantages of the Invention
[0014] According to the above configuration, it is possible to realize a furniture hinge structure with a simple configuration and easy attachment or detachment of the door.
Brief Description of the Drawings
[0015]
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Figure 7
Figure 8
Figure 9
Figure 10
Figure 11
Figure 12A
Figure 12B
Figure 12C
Embodiments for Carrying Out the Invention
[0016] 1. Outline of the Embodiment First, an outline of a typical embodiment of the invention disclosed in the present application will be described. In the following description, as an example, the reference signs on the drawings corresponding to the components of the invention are described with parentheses.
[0017] 〔1〕In the hinge structure for furniture in a typical embodiment of the present invention, there are a frame body (110), a door (120), an upper hinge (130) and a lower hinge (230) that support the door (120) so as to be openable and closable with respect to the frame body (110). The upper hinge (130) has an upper pivot (140) embedded in the upper end surface of the door (120), and an upper plate (150) fixed to the ceiling surface of the frame body (110) facing the upper pivot (140) and engaged with the shaft portion (143) of the upper pivot (140). The lower hinge (230) has a lower pivot (240) embedded in the lower end surface of the door (120), and a lower plate (250) fixed to the bottom surface of the frame body (110) facing the lower pivot (240) and engaged with the shaft portion (243) of the lower pivot (240). The lower plate (250) has an inclined portion (270) that tilts the door (120) while sliding the tip of the shaft portion (243) of the lower pivot (240).
[0018] 〔2〕In the present invention, the shaft portion (243) of the lower pivot (240) moves along the inclined portion (270) of the lower plate (250).
[0019] 〔3〕In the present invention, a stopper (280) is detachably attached to the lower plate (250) at a position adjacent to the inclined portion (270).
[0020] 〔4〕In the present invention, the lower plate (250) has a plate-shaped lower plate body (261) having the inclined portion and a cylindrical body (265) fixed integrally with the lower plate body (261). On the outer peripheral surface of the cylindrical body (265), a protrusion (267) having an outer diameter slightly larger than the inner diameter of the columnar recess provided on the bottom surface of the frame body (110) is formed.
[0021] 〔5〕In the present invention, the stopper (280) has an arcuate inner peripheral surface (283d) that rotatably holds the shaft portion (243) of the lower pivot (240) when attached to the lower plate (250).
[0022] 2. Specific Example of the First Embodiment Hereinafter, the configuration of the cabinet equipped with the furniture hinge structure according to the embodiment of the present invention will be described in detail with reference to FIGS. 1 to 12C.
[0023] In the directions used in the following description, the door closing side where the door 120 of the cabinet 100 closes is defined as the rotation direction in which the door 120 closes to the right side (in the direction of arrow a) when the cabinet 100 is viewed from the front, and the door opening side where the door 120 opens is defined as the rotation direction in which the door 120 opens to the left side (in the direction of arrow b) when the cabinet 100 is viewed from the front. Therefore, the opening and closing direction is the direction of arrow ab in which the door 120 draws an arc.
[0024] Also, the upper side is defined as the upper side (in the direction of arrow c) when the cabinet 100 is viewed from the front, and the lower side is defined as the lower side (in the direction of arrow d) when the cabinet 100 is viewed from the front. Therefore, the vertical direction or the gravitational direction is the direction of arrow cd.
[0025] Furthermore, the left side is defined as the left side (in the direction of arrow e) which is the hanging side when the cabinet 100 is viewed from the front, and the right side is defined as the right side (in the direction of arrow f) which is the door tip side when the cabinet 100 is viewed from the front. Therefore, the left and right direction or the horizontal direction is the direction of arrow ef. However, the opening and closing direction, the vertical direction, and the left and right direction are used for convenience of explanation, and can be defined as different directions depending on the usage situation where the cabinet 100 is placed.
[0026] <Cabinet> As shown in FIGS. 1(A) to (C), in the embodiment of the present invention, the cabinet 100 as furniture is composed of a frame body 110 having an overall cubic shape or rectangular parallelepiped shape, a door 120, an upper hinge 130, and a lower hinge 230.
[0027] <Frame body> In the frame 110 of the cabinet 100, an upper frame 111, a lower frame 112, a left frame 113, and a right frame 114 form a box having an inner storage space. In the frame 110, a door 120 made of a rectangular plate-like member is attached to the rectangular front opening 110a of the frame 110 via an upper hinge 130 and a lower hinge 230 so as to be openable and closable.
[0028] In this case, the upper hinge 130 and the lower hinge 230 are attached to the end of the upper frame 111 on the left side (in the direction of arrow c) and the end of the lower frame 112 on the left side (in the direction of arrow e) of the frame 110 when looking at the cabinet 100 from the front.
[0029] Therefore, in the frame 110, the door 120 is opened by rotating it in the clockwise door-opening side (in the direction of arrow b) when viewed from the upper side (in the direction of arrow c) via the upper hinge 130 and the lower hinge 230, and is closed by rotating it in the counterclockwise door-closing side (in the direction of arrow a). However, it is not limited to this. In the frame 110, the door 120 may have a right-opening structure when the upper hinge 130 and the lower hinge 230 are attached to the end on the right side (in the direction of arrow f).
[0030] <Door> The door 120 is a plate-like member having a rectangular shape in plan view that can close the front opening 110a of the frame 110. A predetermined clearance is provided between the door 120 and the front opening 110a of the frame 110, and the door 120 has a size such that it does not contact the frame 110 when the door 120 is opened and closed.
[0031] <Upper hinge> As shown in FIG. 2, the upper hinge 130 includes an upper pivot 140 embedded downward (in the direction of arrow b) from the upper end surface 120a of the door 120, and an upper plate 150 that is attached in a state of being embedded in the ceiling surface 111u of the upper frame 111 of the frame 110 facing the upper pivot 140 and is engaged with the shaft portion 143 of the upper pivot 140.
[0032] <Upper pivot> As shown in FIG. 3, the upper pivot 140 of the upper hinge 130 includes a socket portion 141 formed of metal, resin, or the like and having a cylindrical shape extending along the vertical direction (arrow cd direction) as a whole, a disk-shaped flange portion 142 formed integrally with the upper end portion of the socket portion 141, and a shaft portion 143 protruding upward (arrow c direction) from the upper end surface of the flange portion 142.
[0033] The socket portion 141 of the upper pivot 140 is formed of a cylindrical member made of metal, resin, or the like. The socket portion 141 houses the shaft portion 143 and a spring (not shown) for protruding the shaft portion 143 outward from the flange portion 142 in its inner space. This spring biases the upper end portion of the shaft portion 143 to protrude from the flange portion 142.
[0034] The flange portion 142 of the upper pivot 140 has an outer diameter slightly larger than that of the socket portion 141, and only the flange portion 142 is exposed from the upper end surface when the socket portion 141 is embedded and fixed in the upper end surface of the door 120.
[0035] The shaft portion 143 of the upper pivot 140 is housed in the inner space of the socket portion 141 except for the upper end portion, and when the upper end portion is pressed down, the entire shaft portion 143 can enter the inner space of the socket portion 141 against the biasing force of a spring provided in the inner space of the socket portion 141.
[0036] That is, the shaft portion 143 of the upper pivot 140 is provided with a so-called return at the lower end portion, is locked to the inner wall portion of the socket portion 141, and is held so that the upper portion of the shaft portion 143 does not protrude further from the flange portion 142. Therefore, when the upper end portion of the shaft portion 143 is not pressed down, the state where the upper end portion protrudes from the inner space of the socket portion 141 is maintained, and when the upper end portion is pressed down, it enters the inner space of the socket portion 141.
[0037] <Upper plate> As shown in FIGS. 4(A) and (B), the upper plate 150 of the upper hinge 130 is formed of metal, resin, or the like, and has an upper plate body 151 and a cylindrical body 155. The upper plate body 151 and the cylindrical body 155 are integrally formed.
[0038] The upper plate body 151 of the upper plate 150 is a plate-like member having a substantially elliptical shape or a substantially teardrop shape in plan view with a smaller curvature at one end than at the other end, and having a predetermined thickness. The upper plate body 151 has a concave groove 152 with a predetermined width formed from one end to the other end along the longitudinal direction.
[0039] The concave groove 152 of the upper plate body 151 has a constant width from one end to the other end. At the other end of the plate body 151, an opening groove 153 that is connected to the concave groove 152 and gradually expands outward from the end of the concave groove 152 is formed.
[0040] In the concave groove 152 of the upper plate body 151, a through hole 152h for fixing to the ceiling surface 111u of the upper frame 111 with screws or the like is formed at the center of the end with a smaller curvature of the upper plate body 151.
[0041] Also, in the concave groove 152 of the plate body 151, a cylindrical concave portion 153h straddling both the concave groove 152 and the opening groove 153 is formed at the center of the end with a larger curvature of the upper plate body 151.
[0042] The concave portion 153h provided at the end with a larger curvature of the upper plate body 151 has an inner diameter larger than that of the through hole 152h provided at the end with a smaller curvature of the upper plate body 151, and has an inner diameter equal to or slightly larger than the outer diameter of the shaft portion 143 of the upper pivot 140.
[0043] Further, this concave portion 153h has a depth in the vertical direction (arrow cd direction) capable of accommodating the upper end portion of the shaft portion 143 protruding from the flange portion 142 of the upper pivot 140. Therefore, in the upper plate body 151, the upper end portion of the shaft portion 143 of the upper pivot 140 enters the concave portion 153h of the opening groove 153, and the upper end portion of the shaft portion 143 can be rotatably supported by the inner peripheral surface 153n forming the concave portion 153h.
[0044] The cylindrical body 155 of the upper plate 150 is a portion that is accommodated and fixed in a cylindrical concave portion provided on the ceiling surface 111u of the upper frame 111 of the frame body 110. The cylindrical body 155 has a cylindrical portion 156 and two annular protrusions 157 formed on the outer peripheral surface of the end portion of the cylindrical portion 156.
[0045] The outer diameter of the protrusion 157 in the cylindrical body 155 is formed slightly larger than the inner diameter of the concave portion of the upper frame 111 in which the cylindrical body 157 is attached, and the cylindrical body 155 is inserted into the concave portion of the upper frame 111. When the cylindrical body 155 is inserted into the concave portion of the upper frame 111, the two protrusions 157 are prevented from easily coming off downward (arrow d direction) from the upper frame 111 with a so-called return function.
[0046] In the upper plate 150, the cylindrical portion 156 of the cylindrical body 155 is inserted into the concave portion of the upper frame 111, whereby the upper plate 150 is attached to the ceiling-like surface 111u of the upper frame 111. In this case, since the cylindrical portion 156 is only inserted, the upper plate 150 can rotate while the cylindrical portion 156 is inserted into the concave portion of the upper frame 111.
[0047] <Lower hinge> As shown in FIG. 5, the lower hinge 230 has a lower pivot 240 embedded upward (arrow c direction) from the lower end surface of the door 120, and a lower plate 250 attached to the bottom surface 112b of the lower frame 112 of the frame body 110 facing the lower pivot 240 and engaged with the shaft portion 243 of the lower pivot 240.
[0048] <Lower pivot> As shown in FIG. 6, the lower pivot 240 of the lower hinge 230 is formed of metal, resin, or the like, and has a socket portion 241 having a cylindrical shape that extends along the vertical direction (arrow cd direction) as a whole, a disk-shaped flange portion 242 formed integrally with the lower end portion of the socket portion 241, and a shaft portion 243 that protrudes downward (arrow d direction) from the lower end surface of the flange portion 242.
[0049] The socket portion 241 of the lower pivot 240 houses most of the lower end portion of the shaft portion 243 except for the lower end portion in its inner space, and holds the lower end portion of the shaft portion 243 in a state of protruding from the flange portion 242. Different from the upper pivot 140, the lower pivot 240 is fixed in a state where the lower end portion of the shaft portion 243 protrudes from the flange portion 242 by a predetermined amount.
[0050] The flange portion 242 of the lower pivot 240 has an outer diameter slightly larger than that of the socket portion 241, and is a portion where only the flange portion 242 is exposed from the lower end surface when the socket portion 241 is embedded and fixed in the lower end surface of the door 120.
[0051] The shaft portion 243 of the lower pivot 240 is fixed to the socket portion 241 in a state where the lower end portion protrudes from the flange portion 242 by a predetermined amount. Therefore, in the lower pivot 240, the socket portion 241 and the shaft portion 243 may have an integral structure formed integrally from the beginning.
[0052] <Lower plate> As shown in FIGS. 7 to 9, the lower plate 250 of the lower hinge 230 is formed of metal, resin, or the like, and has a lower plate body 261, a cylindrical body 265, and a stopper 280. The lower plate body 261 and the cylindrical body 265 are integrally formed, and the stopper 280 is detachably attached to the lower plate body 261.
[0053] The lower plate body 261 of the lower plate 250 is a plate-shaped member having a substantially elliptical shape or a substantially teardrop shape in plan view with a smaller curvature at one end than at the other end, and having a predetermined thickness. The lower plate body 261 has a concave groove 262 (FIGS. 8 and 9) with a predetermined width formed along the longitudinal direction from one end to the other end.
[0054] The concave groove 262 of the lower plate body 261 has a constant width from one end to the other end. At one end, there is a circular groove 262c that is connected to the concave groove 262 and is larger than the concave groove 262. At the other end, there is an opening groove 263 that is connected to the concave groove 262 and gradually expands outward from the end of the concave groove 262.
[0055] In the concave groove 262 of the lower plate body 261, a through hole 262h for attachment to the bottom surface 112b of the lower frame 112 by screws or the like is formed at the center of the end with a smaller curvature in the lower plate body 261.
[0056] The concave groove 262 is formed by a bottom surface 262a that extends parallel to the bottom surface 112b of the lower frame 112 along the longitudinal direction of the lower plate body 261, and two side surfaces 262b that extend parallel to each other upward (in the direction of arrow c) from both end portions of the bottom surface 262a.
[0057] Also, in the concave groove 262 of the lower plate body 261, an inclined portion 270 that gradually inclines downward (in the direction of arrow d) from the bottom surface of the concave groove 262 is formed at the other end with a larger curvature in the lower plate body 261.
[0058] The inclined portion 270 is an extended portion having the same width as the concave groove 262, is smoothly connected to the bottom surface 262a of the concave groove 262, and has an inclined surface 270a formed gently at a predetermined inclination angle. A slightly inclined connecting surface 270t that smoothly connects between the inclined surface 270a of the inclined portion 270 and the bottom surface 262a of the concave groove 262 is formed.
[0059] In addition, the inclined portion 270 has a substantially flat bottom surface 270b adjacent to the inclined surface 270a. The bottom surface 270b of the inclined portion 270 is a portion that rotatably holds the shaft portion 243 of the lower pivot 240 in a state where the tip of the lower end portion of the shaft portion 243 of the lower pivot 240 abuts thereon.
[0060] The inclined portion 270 has a side surface 270c that functions as a guide for guiding the lower end portion of the shaft portion 243 of the lower pivot 240 from the bottom surface 270b to the concave groove 262, and a semi-circular inner peripheral surface 270d that rotatably supports the shaft portion 243.
[0061] The side surface 270c of the inclined portion 270 is a flat surface parallel to the longitudinal direction of the shaft portion 243 of the lower pivot 240 and is connected to the side surface 262b of the concave groove 262. The inner peripheral surface 270d of the inclined portion 270 is smoothly connected to the side surface 270c and is a semi-circular cylindrical surface extending along the longitudinal direction of the shaft portion 243 of the lower pivot 240.
[0062] In addition, engaged concave portions 264 for detachably attaching the stopper 280 of the lower plate 250 are respectively formed in the two side surfaces 262b that form the concave groove 262 at substantially the center in the longitudinal direction thereof.
[0063] By engaging the engaging portion 284 of the stopper 280 with these engaged concave portions 264, it is possible to restrict the movement of the stopper 280 along the longitudinal direction of the concave groove 262 of the lower plate main body 261.
[0064] The cylindrical body 265 of the lower plate 250 is a portion that is housed and attached in a cylindrical concave portion provided on the bottom surface 112b of the lower frame 112 of the frame body 110. The cylindrical body 265 has a cylindrical portion 266 and two annular protrusions 267 formed on the outer peripheral surface of the end portion of the cylindrical portion 266.
[0065] The outer diameter of the protrusion 267 in the cylindrical body 265 is formed slightly larger than the inner diameter of the recess in the lower frame 112 to which the cylindrical body 266 is attached, and the cylindrical portion 266 is inserted into the recess in the lower frame 112. When the cylindrical portion 266 is inserted into the recess in the lower frame 112, the two protrusions 267 serve a so-called return function to prevent the cylindrical body 265 from easily coming off the lower frame 112 upward (in the direction of arrow c).
[0066] In the lower plate 250, the cylindrical body 266 is attached to the bottom surface 112b of the lower frame 112 by being inserted into the recess in the lower frame 112. In this case, since only the cylindrical body 265 is inserted, the lower plate 250 can rotate while the cylindrical body 265 is inserted into the recess in the lower frame 112.
[0067] <Stopper> As shown in FIG. 8 and FIGS. 10(A) and (B), the stopper 280 is a plate-like member formed to have a length corresponding to the concave groove 262, the circular groove 262c provided in the lower plate body 261 of the lower plate 250, and the inclined surface 270a of the inclined portion 270. Here, in FIG. 8, the stopper 280 is illustrated so that the portion mounted in the concave groove 262 of the lower plate body 261 can be seen.
[0068] The stopper 280 has a stopper main body portion 281, a disk portion 282 formed at one end of the stopper main body 281, and a shaft holding portion 283 formed at the other end of the stopper main body 281, and these three are integrally formed.
[0069] The stopper main body portion 281 of the stopper 280 has a total length of the bottom surface 262a of the concave groove 262 provided in the lower plate body 261 and the connecting surface 270t of the inclined portion 270, the same width as the bottom surface 262a, and the same height (thickness) as the side surface 262b forming the concave groove 262. That is, the stopper main body 281 can be fitted in a state of being housed in the concave groove 262 so as to be placed on the bottom surface 262a of the concave groove 262 and the connecting surface 270t of the inclined portion 270.
[0070] Further, the stopper main body portion 281 has an engaging portion 284 that engages with the engaged concave portion 264 of the lower plate main body 261 at a substantially central portion in the longitudinal direction. The engaging portion 284 is a convex portion having a substantially rectangular parallelepiped shape formed integrally with the edge portions of both sides extending in the longitudinal direction of the stopper main body portion 281.
[0071] The disk portion 282 of the stopper 280 has an outer diameter that is the same as the inner diameter of the circular groove 262c provided in the lower plate main body 261. The disk portion 282 has a height (thickness) that is the same as the depth of the circular groove 262c of the lower plate main body 261. The disk portion 282 has a through hole 282h having the same inner diameter as the through hole 262h at a position corresponding to the through hole 262h of the lower plate main body 261 when the disk portion 282 is fitted into the circular groove 262c.
[0072] The shaft holding portion 283 of the stopper 280 extends from the stopper main body portion 281 by a predetermined length, has the same width as the inclined surface 270a of the inclined portion 270, and is a plate-like portion having a rectangular shape in plan view disposed above the inclined surface 270a (in the direction of arrow c). Further, the shaft holding portion 283 has an arcuate inner peripheral surface 283d having the same inner diameter as the inner peripheral surface 270d provided on the inclined portion 270 of the lower plate main body 261 at the other end portion.
[0073] That is, when the stopper main body portion 281 and the disk portion 282 of the stopper 280 are fitted into the concave groove 262 and the circular groove 262c of the lower plate main body 261, at the same time, the engaging portion 284 of the stopper main body portion 281 is engaged with the engaged portion 264 of the lower plate main body 261, and the movement of the stopper 280 in the longitudinal direction is restricted.
[0074] At this time, the shaft holding portion 283 of the stopper main body portion 281 is disposed on the inclined surface 270a of the inclined portion 270, and a support space 290 (FIG. 7) for rotatably supporting the lower end portion of the shaft portion 243 of the lower pivot 240 is formed by the arcuate inner peripheral surface 283d of the shaft holding portion 283 and the semi-circular arcuate inner peripheral surface 270d of the inclined portion 270.
[0075] Note that in the stopper main body 281, on its front surface 281a, there is a rectangular convex portion 286 having a predetermined height between two engaging portions 284, and on its back surface 281b, at a portion corresponding to the convex portion 286, there is a rectangular concave portion 287 having a predetermined depth between two engaging portions 284.
[0076] Therefore, when the stopper 280 is fitted into the lower plate main body 261, the concave portion 287 is compressed, the width of the two engaging portions 284 becomes smaller, and it can be easily fitted.
[0077] <Procedure for Removing the Door in the Cabinet> Subsequently, the procedure for removing the door 120 in the cabinet 100 will be described. The door 120 is attached to the upper frame 111 and the lower frame 112 of the frame body 110 via an upper hinge 130 and a lower hinge 230 so as to be openable and closable.
[0078] In this case, in the door 120, the upper end portion of the shaft portion 143 of the upper pivot 140 in the upper hinge 130 enters the concave portion 153h (FIG. 4) of the upper plate 150, and the lower end portion of the shaft portion 243 of the lower pivot 240 in the lower hinge 230 enters the support space 290 (FIG. 7) formed by the inner peripheral surface 270d of the lower plate main body 261 of the lower plate 250 and the inner peripheral surface 283d of the shaft holding portion 283 of the stopper 280.
[0079] As shown in FIG. 11, the lower end portion of the shaft portion 243 of the lower pivot 240 in the lower hinge 230 enters the above-described support space 290, and its lower end portion is positioned so as to straddle both the inclined surface 270a and the bottom surface 270b of the inclined portion 270.
[0080] In this case, since the stopper 280 is attached to the lower plate 250, the lower portion of the shaft portion 243 of the lower pivot 240 is in contact with the arcuate inner peripheral surface 283d provided in the shaft holding portion 283 of the stopper 280, and the movement of the shaft portion 243 is restricted.
[0081] When removing the door 120 from the frame body 110, the stopper 280 that constitutes the lower plate 250 of the lower hinge 230 is removed from the lower plate main body 261. As a result, the lower plate main body 261 exposes the concave groove 262 and the inclined portion 270, and the shaft holding portion 283 of the stopper 280 that restricts the movement of the lower end portion of the shaft portion 243 of the lower pivot 240 disappears.
[0082] As shown in FIG. 12A, since the cylindrical portion 156 of the cylindrical body 155 of the upper plate 150 is only inserted into the concave portion of the upper frame 111, by rotating around the cylindrical portion 156, a state is formed in which the upper plate main body 151 does not contact the top surface 111u of the upper frame 111.
[0083] Similarly, since the cylindrical portion 266 of the cylindrical body 265 of the lower plate 250 is only inserted into the concave portion of the lower frame 112, by rotating around the cylindrical portion 266, a state is formed in which the lower plate main body 261 does not contact the bottom surface 112b of the lower frame 112. As a result, a state is formed in which the door 120 can be pulled out from the upper frame 111 and the lower frame 112 of the frame body 110.
[0084] As shown in FIG. 12B, the door 120 is tilted by moving the lower end portion of the shaft portion 243 of the lower pivot 240 in the lower hinge 230 along the inclined surface 270a of the inclined portion 270 of the lower plate main body 261.
[0085] At this time, when the lower end portion of the shaft portion 243 of the lower pivot 240 starts to climb along the inclined surface 270a of the inclined portion 270, the door 120 tilts according to the inclination of the inclined surface 270a, and the shaft portion 143 of the upper pivot 140 comes out of the support space 290.
[0086] That is, in this state, the shaft portion 143 of the upper pivot 140 in the door 120 is in a state where it can move along the concave groove 152 of the upper plate 150, and the lower end portion of the shaft portion 243 of the lower pivot 240 in the door 120 climbs over the inclined surface 270a of the inclined portion 270 of the lower plate main body 261 and is in a state where it can move along the concave groove 262.
[0087] As shown in FIG. 12C, when the door 120 is pulled out away from the frame body 110 while being inclined as shown in FIG. 12B, the upper end portion of the shaft portion 143 of the upper pivot 140 moves along the concave groove 152 of the upper plate 150 and then disengages from the concave groove 152, and the lower end portion of the shaft portion 243 of the lower pivot 240 moves along the concave groove 262 of the lower plate main body 261 and then disengages from the concave groove 262. As a result, the door 120 is removed from the frame body 110.
[0088] When attaching the door 120 to the frame body 110, the reverse operation may be performed according to the procedure from FIG. 12C to FIG. 12A. Finally, the upper plate main body 151 is rotated around the cylindrical portion 156, and the lower plate main body 261 is rotated around the cylindrical portion 266, so that the upper plate 150 and the lower plate 260 are returned to their original states.
[0089] Thereafter, by attaching the stopper 280 to the lower plate main body 261, the movement of the lower end portion of the shaft portion 243 of the lower pivot 240 can be restricted due to the presence of the stopper 280, so that the situation where the door 120 attached to the frame body 110 accidentally falls off from the frame body 110 can be avoided.
[0090] <Function and Effect> According to the above configuration, in the cabinet 100, with the upper end portion of the shaft portion 143 of the upper pivot 140 protruding from the socket portion 141 and the lower end portion of the shaft portion 243 of the lower pivot 240 protruding from the flange portion 242, as long as the stopper 280 of the lower hinge 230 is removed from the lower plate 250, the door 120 can be easily removed by simply tilting and pulling it out from the frame body 110.
[0091] Thus, in the cabinet 100, by simply moving the lower end portion of the shaft portion 243 of the lower pivot 240 along the inclined surface 270a of the inclined portion 270 of the lower plate body 261, the door 120 automatically tilts along the inclined surface 270a, and the door 120 can be easily removed from the frame body 110 just by pulling it out as it is.
[0092] Therefore, in the cabinet 100, there is no need for the complicated and troublesome operation for removing the door 120 from the frame body 110 as in the prior art, and the door 120 can be easily removed from the frame body 110.
[0093] Also, in the cabinet 100, when attaching the upper plate body 151 to the upper frame 111, it is only necessary to insert the cylindrical portion 156 into the recess of the upper frame 111, and when attaching the lower plate body 261 to the lower frame 112, it is only necessary to insert the cylindrical portion 266 into the recess of the lower frame 112. Thus, the upper hinge 130 and the lower hinge 230 can be easily attached without using fixing tools such as screws.
[0094] As described above, in this embodiment, it is possible to realize a furniture hinge structure with a simple configuration and easy attachment or detachment of the door 120.
[0095] 3. Other Embodiments In the above-described embodiment, the case where the present invention is applied to the cabinet 100 in which one door 120 is attached to the frame body 110 so as to be openable and closable has been described. However, the present invention is not limited to this, and it may be applied to a cabinet having a double-door structure with two doors.
[0096] Also, in the above-described embodiment, the case where the furniture hinge structure of the present invention is used for the cabinet 100 as furniture has been described. However, the present invention is not limited to this, and it may be applied to various other furniture such as doors, chests of drawers, and closets other than the cabinet 100.
[0097] Furthermore, in the above-described embodiment, the case where the door 120 is removed from the frame body 110 after making the shaft portion 143 of the upper pivot 140 extendable and contractible has been described. However, the present invention is not limited to this. If there is sufficient clearance between the door 120 and the upper frame 111 of the frame body 110, the door 120 may be removed from the frame body 110 with the shaft portion 143 of the upper pivot 140 protruding from the flange portion 142 by a predetermined amount.
[0098] Furthermore, in the above-described embodiment, the case where the lower end portion of the shaft portion 243 in the lower pivot 240 is fixed in a state of protruding from the flange portion 242 by a predetermined amount has been described. However, the present invention is not limited to this. The entire shaft portion 243 may be accommodated in the inner space of the socket portion 241 when the lower end portion of the shaft portion 243 is pushed down.
[0099] Furthermore, in the above-described embodiment, as shown in FIG. 12A, the cylindrical portion 156 of the cylindrical body 155 in the upper plate 150 is rotated about the center thereof to form a state in which the upper plate body 151 is not in contact with the top surface 111u of the upper frame 111, and the cylindrical portion 266 of the cylindrical body 265 in the lower plate 250 is rotated about the center thereof to form a state in which the lower plate body 261 is not in contact with the bottom surface 112b of the lower frame 112, thereby forming a state in which the door 120 can be pulled out from the upper frame 111 and the lower frame 112 of the frame body 110 has been described.
[0100] However, the present invention is not limited to this. For the upper plate 150, as in FIG. 12A, the cylindrical portion 156 of the cylindrical body 155 is rotated about the center thereof to form a state in which the upper plate body 151 is not in contact with the top surface 111u of the upper frame 111. For the lower plate 250, without rotating the cylindrical portion 266 of the cylindrical body 265 about the center thereof, the lower plate body 261 is maintained in a state of being in contact with the bottom surface 112b of the lower frame 112, and the door 120 may be pulled out from the upper frame 111 and the lower frame 112 of the frame body 110.
[0101] In this case, by moving the lower end portion of the shaft portion 243 of the lower pivot 240 in the lower hinge 230 along the inclined surface 270a of the inclined portion 270 of the lower plate body 261, a state is formed in which the door 120 is inclined in the direction opposite to that in FIG. 12B, and the door 120 can be pulled out from the upper frame 111 and the lower frame 112 of the frame body 110.
[0102] In addition, those skilled in the art can appropriately modify the hinge structure for furniture of the present invention in accordance with conventionally known knowledge. As long as the configuration of the present invention is still provided by such modifications, of course, it is included in the scope of the present invention.
Explanation of Reference Numerals
[0103] 100... Cabinet, 110... Frame body, 110a... Front opening, 111... Upper frame, 111u... Ceiling surface, 112... Lower frame, 112b... Bottom surface, 120... Door, 120a... Upper end surface, 130... Upper hinge, 140... Upper pivot, 141... Socket portion, 141h... Through hole, 142... Flange portion, 143... Shaft portion, 150... Upper plate, 151... Upper plate body, 152... Groove, 152h... Through hole, 153... Opening groove, 153h... Concave portion, 153n... Inner peripheral surface, 155... Cylindrical body, 156... Tubular portion, 157... Projection, 230... Lower hinge, 240... Lower pivot, 241... Socket portion, 242... Flange portion, 243... Shaft portion, 250... Lower plate, 261... Lower plate body, 262... Groove, 262a... Bottom surface, 262b... Side surface, 262c... Circular groove, 262h... Through hole, 263... Opening groove, 264... Engaged portion, 265... Cylindrical body, 266... Tubular portion, 267... Projection, 270... Inclined portion, 270a... Inclined surface, 270t... Connecting surface, 270b... Bottom surface, 270c... Side surface, 270d... Inner peripheral surface, 280... Stopper, 281... Stopper main body portion, 281a... Surface, 281b... Back surface, 282... Disk portion, 282h... Through hole, 283... Shaft holding portion, 283d... Inner peripheral surface, 284... Engaging portion, 286... Protrusion, 287... Concave portion, 290... Support space.
Claims
1. A frame body, a door, an upper hinge and a lower hinge for supporting the door to be openable and closable with respect to the frame body, characterized in that it comprises: The upper hinge has an upper pivot embedded in the upper end surface of the door, and an upper plate fixed to the ceiling surface of the frame body facing the upper pivot and engaged with the shaft portion of the upper pivot, and has: The lower hinge has a lower pivot embedded in the lower end surface of the door, and a lower plate fixed to the bottom surface of the frame body facing the lower pivot and engaged with the shaft portion of the lower pivot, and has: The lower plate has an inclined portion for tilting the door while sliding the tip of the shaft portion of the lower pivot. A hinge structure for furniture, characterized by the above.
2. The shaft portion of the lower pivot moves along the inclined portion of the lower plate. The hinge structure for furniture according to Claim 1, characterized by the above.
3. A stopper is detachably attached to the lower plate at a position adjacent to the inclined portion. The hinge structure for furniture according to Claim 1, characterized by the above.
4. The lower plate has a plate-shaped lower plate body having the inclined portion and a cylindrical body fixed integrally with the lower plate body. On the outer peripheral surface of the cylindrical body, a protrusion having an outer diameter slightly larger than the inner diameter of the columnar recess provided on the bottom surface of the frame body is formed. The hinge structure for furniture according to Claim 1 or 2.
5. The stopper has an arcuate inner peripheral surface that rotatably holds the shaft portion of the lower pivot when attached to the lower plate. The hinge structure for furniture according to Claim 3.