JP5649530B2 - Hidden hinge - Google Patents

Description

  The present invention relates to a hidden hinge that is attached to a frame of an opening and a door or between doors or doors so as to be freely opened and closed, and cannot be seen from the outside when the door is closed.

  There are many types of hinges that can be freely opened and closed or the doors and doors can be folded between each other. Broadly categorizing the hinge with the closed door as a reference, the hinge can be seen from either the inside or outside of the door, or from the side where the part of the hinge is visible, such as the rotation axis of the hinge. It is divided into the type that does not feel the use of.

  A typical type of hinge that can be seen is based on a structure in which two blades are pivotally connected around one axis. In this type of hinge, in order to open the door at 90 degrees or more with respect to the frame, it is necessary to attach the connecting portion of the blade plate by the rotating shaft to the inside and outside of the door from the joint of the frame and the door. In this configuration, the protruding amount of the connecting part may be obstructed by the positional relationship between the wall and the opening, the door opening and closing direction may be restricted, the hinge is destroyed from the outside, the frame and the door are removed, It may be a problem for crime prevention.

  The invisible type is also called a hidden hinge, and has a configuration in which a frame and a pair of frames attached to the door are connected by a connecting member. As an example of the hidden hinge, the one described in Patent Document 1 (Japanese Patent Laid-Open No. 6-288139) can be exemplified, and the rotation shaft of the connecting member can be configured to advance and retreat along the guide groove formed in each frame. Thus, the shape change due to the difference between the pair of frame opening angles is absorbed. That is, the connecting shaft of the connecting member and the frame is arranged so that the connecting member protrudes toward the frame opening when the door begins to open, and the connecting member can be disposed adjacent to the opening of the frame when the frame has been opened up to 180 degrees. Move. On the other hand, when the pair of frames are in a closed state, the connecting shaft of the connecting member moves to the back side of the opening of the frame, and the connecting member is accommodated in the opening of the frame.

  The link structure used in the hidden hinge described in Patent Document 1 is provided with a connecting member that can move the connecting shaft from each frame, and the other frame is fixed so that the shaft does not move. The frame opening angle is interlocked with the opening and closing of the hinge. In other words, when the frame and the door are opened and closed, if the angle between the door side frame and the connecting member changes, the angle between the frame side frame and the connecting member changes in conjunction with the angle change. ing. By enabling the interlocking of the opening angle of the frame, it is possible to prevent the door from rattling or the like and to smoothly open and close the door.

  As described above, in the link structure generally used for the hidden hinge, the rotation axis is fixed to one frame and the other frame is slidable so that the opening angle of the frame can be interlocked. A basic configuration in which connected connecting members are provided for both frames, and these connecting members are pivotally supported at intermediate portions so as to accommodate the end portions of the respective slidable frames. have.

JP-A-6-288139 JP 2006-83628 A

  However, since the hidden hinge of Patent Document 1 has a complicated link configuration that realizes this angular interlock, the link configuration around the movable connecting shaft and the fixed connecting shaft is complicated. Then, since it becomes difficult to store the entire link in the opening of the frame, the link structure is reduced in size by reducing the thickness of the link around the connecting shaft. For this reason, the strength as a hinge is given by using a high-strength material for the link structure, which causes high cost.

  Patent Document 2 (Japanese Patent Laid-Open No. 2006-83628) discloses a hidden hinge in which a connecting mechanism between frames is simply configured. This concealed hinge has a configuration in which a frame having a pin serving as a rotation center and a connecting member in which both ends are bent and a bearing is formed at the tip are rotatably fitted. However, in this configuration, the connecting material with both ends bent and the frame are simply pivotally supported, and the angle change between one frame and the connecting material is linked to the angle change between the other frame and the connecting material. There is a problem that the opening angle of the frame cannot be interlocked with the opening and closing of the hinge.

  Therefore, the technical problem to be solved by the present invention is to provide a low-cost hidden hinge that can solve the above-described problems and can realize the interlocking between frames with a simple configuration.

  In order to solve the above technical problem, the present invention provides a hidden hinge having the following configuration.

According to the first aspect of the present invention, a pair of frames provided with storage chambers that open at opposite positions in a closed state;
A slider provided to be slidable in the depth direction of the storage chamber of the frame;
A first bearing is formed at the tip of the bent portion provided at both ends, and a coupling member coupled to the frame via the slider ;
Second ends are provided with second bearings, the intermediate portion is not connected to the connecting member, and is connected to the frame via the slider so that the fixed shaft of the connecting member and the fixed shaft of the link member are at different positions. A link member,
A pinion provided at a bent portion of the connecting member;
A rack meshing with the pinion provided on the inner surface of the frame;
A hidden hinge is provided.

  According to the second aspect of the present invention, there is provided the hidden hinge according to the first aspect, wherein the fixed shaft of the connecting member and the fixed shaft of the link member are provided at different positions in the depth direction of the storage chamber.

According to a third aspect of the present invention, there is provided the hidden hinge according to the first or second aspect , wherein the pinion is provided with the first bearing of the bent portion as a rotation center.

According to a fourth aspect of the present invention, there is provided the hidden hinge according to the first to third aspects, wherein the pinion is provided integrally with the connecting member on an outer peripheral surface of the bent portion.

According to a fifth aspect of the present invention, the frame includes a guide portion that engages with the slider on an opposing inner surface, and the slider is provided to be movable along the guide portion. A hidden hinge according to any one of the first to fourth aspects is provided.

  According to the present invention, in addition to the connecting member, a link member that is not connected to the connecting member is provided in the middle, and the connecting member and the link member are paired with the fixed shaft provided on the bearing of the connecting member and the link member. Concatenate with In addition, the intermediate part of a link member and a connection member are non-connecting is a structure by which both members are not connected directly or indirectly in the location except a bearing part. In addition, the link member and the connecting member are arranged so that the position at which the fixed shaft for supporting the connecting member and the fixed shaft for supporting the link member are attached to the frame are different from each other in the depth direction of the storage chamber, for example. Connect to With this configuration, the connecting member, the link member, and the pair of frames form a four-bar mechanism having the respective fixed shafts as the rotation axes. Therefore, it can be set as the structure which can be interlock | cooperated as an angle change with the other frame of the angle change with a connection member and one frame.

  Further, since both ends of the connecting member are configured as bent portions, the connecting member and the link member can be connected to the frame at different positions in the depth direction of the storage chamber, and the peripheral edge of the frame Interference with these members can be prevented and the opening / closing angle of the hidden hinge can be increased.

Further, according to the present invention, since the coupling member and the link member can be slid in the depth direction of the storage chamber of the frame, the interference between the frame and the link mechanism can be prevented. The accommodation and opening / closing angle can be increased. In addition, the rack and pinion provided on the bent portion and the inner side surface of the frame can ensure the sliding of the connecting member according to the angle interlock between the frame and the connecting member, and the connecting member By allowing sliding with the link member, it is possible to prevent the frame and the connecting member from rattling or falling off. For this reason, storage of the link mechanism in the closed state and enlargement of the opening angle of the hinge can be realized. Moreover, by making the rotation center of a pinion into a 1st bearing, the position change of the 1st bearing accompanying rotation of a pinion can be made linear, and a structure can be simplified.

According to the 4th aspect of this invention, a pinion can be provided in the outer peripheral surface of a bending part, a number of parts can be decreased and a link structure can be simplified. Further, since the installation width of the pinion can be increased, it is possible to increase the meshing force and prevent the hidden hinges from rattling.

According to the fifth aspect of the present invention, the sliding direction of the slider can be determined by the guide portion provided on the inner surface of the frame storage chamber, and rattling can be prevented.

It is the schematic which shows the state which used the hidden hinge concerning embodiment of this invention for the hinged door. It is the schematic which shows the state which used the hidden hinge concerning embodiment of this invention for the folding door. It is a perspective view which shows the structure of the hidden hinge concerning embodiment of this invention. It is a figure which shows the structure of the hidden hinge of FIG. 3 in the state which closed the door. FIG. 4 is a partially assembled exploded view of the hidden hinge of FIG. 3. It is the assembly exploded view which looked at the hidden hinge of FIG. 5 from another angle. It is sectional drawing which shows the positional relationship of the flame | frame of the hidden hinge of FIG. 3 in a closed state, and a connection member. It is sectional drawing which shows the positional relationship of the flame | frame of the hidden hinge of FIG. 3 in an open state, and a connection member. It is a perspective view which shows the structure of a 1st axis pin. It is a perspective view which shows the structure of a 2nd slider. It is a perspective view which shows the structure of a 2nd axis pin. FIG. 4 is a cross-sectional view of the hidden hinge of FIG. 3 in an open state. FIG. 4 is a cross-sectional view of the hidden hinge of FIG. 3 in the middle open state. FIG. 4 is a cross-sectional view of the hidden hinge of FIG. 3 in a closed state.

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

  As shown in FIG. 1, the hidden hinge 1 is a hinged door composed of a frame 100 such as a front door and a door 101, or a coupling surface 102a of two doors 102 of a folding door as shown in FIG. Used for. Hereinafter, in this embodiment, the case where the hidden hinge 1 is applied to the hinged door shown in FIG. 1 will be described as an example.

  FIG. 3 is a perspective view showing the configuration of the hidden hinge according to the embodiment of the present invention. FIG. 4 is a diagram illustrating the configuration of the hidden hinge in a state where the door is closed. In the hidden hinge 1, a pair of frames including a frame-side frame 3 attached to the end surface 100 a of the hinged door frame 100 and a door-side frame 4 attached to the end surface 101 a of the door 101 are connected by a connecting member 5 and a link member 6. It is a configuration.

  The connecting member 5 and the link member 6 constitute a link mechanism that connects the pair of frames 2. In this embodiment, the hidden hinge 1 includes two connecting members 5 and one link member 6, and the two connecting members 5 are provided so as to be parallel to the height direction of the frame 2. The link member 6 is disposed along the connecting member 5 between the connecting members 5.

  The pair of frames 2 are attached to the hinged door via a casing (not shown). The frame 2 and the casing are fixed by fixing screws (not shown) inserted into screw holes 7 provided at the upper and lower ends of the frame 2.

  The casing and the frame side frame 3 can be adjusted in the height direction, and the casing and the door side frame 4 can be adjusted in the depth direction. By changing the relative position of the casing and the frame 2, the hidden hinge can be adjusted. The mounting position can be adjusted.

  The pair of frames 2 is provided with a storage chamber 8 in which the opposing surfaces open in a closed state, and is configured to be able to store the connecting member 5 and the link member 6 therein. As shown in FIG. 4, when the hinged door is in a closed state, the connecting member 5 and the link member 6 are slid back and stored in the storage chamber 8, and a large gap is formed between the frame 100 and the door 101. Avoid forming. On the other hand, as shown in FIG. 3, when the hinged door is open, it slides toward the opening side of the storage chamber 8 so that the opening angle of the frame 2 is increased.

  FIG. 5 is a partially assembled exploded view of the hidden hinge of FIG. FIG. 6 is an exploded view of the hidden hinge of FIG. 5 as seen from another angle. 5 and 6 show the assembly structure of the frame body side frame 3 and the link mechanism, the same structure is adopted for the door side frame 4 as well. Further, in FIG. 6, pins that connect the link mechanism and the slider are omitted.

  As shown in FIG. 5, the storage chamber 8 provided on the facing surface 9 of the frame body side frame 3 is provided with a rack 10, guide groove forming ribs 11 and groove member mounting ribs 12 on the side surfaces. The guide groove forming ribs 11 and the rack 10 are provided alternately in the height direction of the frame 2, and the groove member mounting ribs 12 are provided on the surface facing the side surface on which the rack 10 is provided.

  The rack 10 is provided on one inner wall of the storage chamber 8 so that the dentition is in the depth direction of the storage chamber 8. The rack 10 meshes with a pinion 22 provided at a bent portion 21 of the connecting member 5 described later.

  FIG. 7 is a cross-sectional view showing the positional relationship between the frame of the hidden hinge of FIG. 3 and the connecting member in the closed state. FIG. 8 is a cross-sectional view showing a positional relationship between the frame of the hidden hinge of FIG. 3 and the connecting member in an open state. The connecting member 5 has a shape having bent portions 21 at both ends of the plate-like main body portion 20. The tip of the bent portion 21 is configured to have a generally arc shape, and the first bearing 23 exists at the center of the arc. A pinion 22 is formed on the outer peripheral portion of the bent portion 21. The 1st bearing 23 provided in the bending part 21 is connected with the 1st and 2nd sliders 15 and 16 by inserting the 1st shaft pin 45 mentioned later (refer FIG. 5).

  The link member 6 has a shape having bent portions 25 at both ends of the plate-like main body portion 24. The bent portion 25 is provided with a second bearing 26 (see FIG. 6). The link member 6 is configured so as not to be connected to the connecting member 5 in the portion of the main body 24 excluding the bent portion 25. In other words, the second bearing 26 provided in the bent portion 25 is connected to the connecting member 5 via the second slider 16 as described later, but is not connected to the connecting member in other portions. .

  As described above, the rack 10 provided on the pinion 22 and the frame 2 is configured to mesh with each other. When the angle formed by the connecting member 5 and the frame 2 is different, the connecting member is connected by the rack 10 and the pinion 22. 5 moves along the teeth of the rack 10. When in the closed state shown in FIG. 7, the connecting member 5 is located on the back side of the storage chamber 8 of the frame 2. In this state, the pinion 22 and the rack 10 are engaged with each other, so that the positional displacement between the connecting member 5 and the frame 2 is prevented, and as a result, rattling between the pair of frames 2 is prevented.

  As shown in FIG. 8, when the pair of frames 2 is in an open state, the angle between the frame 2 and the connecting member 5 changes. As the connecting member 5 rotates, the meshing position of the pinion 22 and the rack 10 moves. As described above, the pinion 22 provided at the tip of the connecting member 5 is provided on the circumference centered on the first bearing 23, and therefore the first bearing 23 is the depth of the storage chamber 8 of the frame 2. Move straight in the direction.

  First and second sliders 15 and 16 are attached to the first bearing 23 via a first shaft pin 45. The first and second sliders 15 and 16 are guided by the guide groove 17 and can move only in the depth direction of the storage chamber 8.

  As shown in FIG. 5, the guide groove 17 provided so as to extend in the depth direction of the storage chamber 8 is provided in the guide groove forming rib 11 and a groove member 40 described later. The guide groove 17 provided in the guide groove forming rib 11 and the groove member 40 is disposed at a position facing the width direction of the frame 2 and engages with the first and second sliders 15 and 16. The first and second sliders 15 and 16 are held so as to be movable in the depth direction of the storage chamber 8.

  The groove member 40 is a member that is fitted to the groove member mounting rib 12 and provided on the frame, and can facilitate the assembly of the hidden hinge according to the present embodiment. As shown in FIG. 6, the groove member 40 is inserted from the outside of the bottom surface of the frame through the insertion hole 14 provided in the bottom wall 13 of the frame 2. The insertion hole 14 is provided at a position on the bottom wall 13 where the groove member mounting rib 12 is provided. The groove member 40 inserted from the insertion hole 14 is guided by the engagement of the engagement groove 18 and the groove member mounting rib 12 and is disposed at a specific position in the storage chamber 8.

  Each of the first and second sliders 15 and 16 is a plate-like member having a bearing hole 42, and an insertion claw 19 that is inserted into the guide groove 17 is provided at a position facing the inner surface of the frame 2.

  As shown in FIGS. 5 and 6, the first slider 15 is a slider provided outside the connecting member 5, and has a circular bearing hole 42. A first shaft pin 45 shown in FIG. 9 is inserted into the bearing hole 42 so as to be rotatably attached to the connecting member 5.

  As shown in FIGS. 5 and 6, the second slider 16 is a slider provided between the connecting member 5 and the link member 6, and has a bearing hole 42 at the center. The first shaft pin 45 shown in FIG. 9 is inserted into the bearing hole 42, and the second shaft pin 46 shown in FIG. The first shaft pin 45 corresponds to the fixed shaft of the connecting member of the present invention, and the second shaft pin 46 corresponds to the fixed shaft of the link member of the present invention.

  FIG. 10 is a perspective view showing the configuration of the second slider. The second slider 16 is different from the bearing hole 42 of the first slider 15 in the shape of the bearing hole 42 provided in the central portion. The bearing hole 42 of the second slider 16 is provided in a state where the connecting shaft hole 43 for connecting to the connecting member 5 and the link shaft hole 44 for connecting to the link member 6 are shifted to different positions. In this embodiment, the connecting shaft hole 43 and the link shaft hole 44 are provided at positions shifted in the extending direction of the slider insertion claw 19, that is, in the moving direction of the second slider 16 indicated by the arrow 90. . The displacement direction of the position of the connecting shaft hole 43 and the link shaft hole 44 is not limited to the moving direction of the second slider, that is, the depth direction of the storage chamber 8, and a four-bar mechanism described later is used. There is no particular limitation as long as it is a functional orientation.

  The first shaft pin 45 shown in FIG. 9 is a columnar member that connects the first slider 15, the connecting member 5, and the second slider 16, and a flat portion 47 is provided on one end side. The flat portion 47 is a part of the outer peripheral portion so as not to interfere with the second shaft pin 46 inserted into the link shaft hole 44 provided in the vicinity when inserted into the connecting shaft hole 43 of the second slider 16. Is removed.

  The second shaft pin 46 shown in FIG. 11 is a columnar member that connects the link member 6 and the two second sliders 16 provided on both sides thereof, and has flat portions 47 on both ends. The flat portion 47 is a part of the outer peripheral portion so as not to interfere with the first shaft pin 45 inserted into the connecting shaft hole 43 provided close when the flat portion 47 is inserted into the link shaft hole 44 of the second slider 16. Is removed. That is, since the first shaft pin 45 and the second shaft pin 46 are inserted from the opposite side with respect to the main surface of the second slider 16, the flat portions 47 of both the pins 45 and 46 are facing each other. Thus, interference between both pins can be prevented.

  The shape of the flat portion 47 of the first shaft pin 45 and the second shaft pin 46 is the shape of the bearing hole 42 of the second slider 16, that is, the connection shaft hole 43 of the connection member 5 and the link shaft hole 44 of the link member 6. What is necessary is just to design suitably by the deviation | shift amount of this position.

  The hidden hinge having the above configuration can be easily assembled by the following procedure. First, the first and second sliders 15 and 16, the connecting member 5 and the link member 6 are assembled to create a link mechanism constituting unit, and the insertion claws 19 of the first and second sliders 15 and 16 form guide grooves. The positions of the pair of frames 2 and the link mechanism constituting unit are provisionally determined so as to fit in the guide grooves of the ribs 11. At this time, the meshing position of the rack 10 and the pinion 22 is adjusted according to the angle between the frame 2 and the connecting member 5 and the link member 6. After that, the first and second sliders 15 and 16 are positioned so that the insertion claws 19 of the first and second sliders 15 and 16 fit into the guide groove of the groove member 40, and the groove member 40 is inserted from the insertion hole 14 on the outer bottom surface of the frame.

  In the hidden hinge 1 connected as described above, the connecting member 5, the link member 6, and the two second sliders 16 provided on the pair of frames are the first shaft pin 45 and the second shaft pin of both frames. Thus, a four-bar mechanism having the four axes 46 as a rotation axis is constituted.

  That is, the change in the angle formed by the connecting member 5 and the one second slider 16 is interlocked with the link member 6 connected by the second shaft pin 46 provided at a position different from the first shaft pin 45, This is linked to the angle formed by the other second slider 16 and the connecting member 5.

  As described above, the second slider 16 is provided with the connecting shaft hole 43 and the link shaft hole 44 shifted in the moving direction of the slider, that is, in the depth direction of the storage chamber 8 of the frame 2. The second slider 16 can be moved linearly only in the depth direction of the frame storage chamber 8. For this reason, a change in the angle formed by the connecting member 5 and the one second slider 16 can be regarded as a change in the angle formed by the connecting member 5 and the one frame 3. The angle change between the connecting member 5 and the one frame 3 is caused by the link member 6 between the connecting member 5 and the other second slider 16, that is, between the connecting member 5 and the other frame 4. Linked to the angle.

  Hereinafter, the interlocking operation of the hidden hinge according to the above-described embodiment will be described in detail. 12 to 14 are cross-sectional views illustrating the interlocking operation of the hidden hinge according to the present embodiment. These drawings show a state cut at a position between the connecting member 5 and the link member 6 located on the near side, and each drawing shows a state where the angular positions are different. Hereinafter, in the drawings, how the door side frame 4 operates with respect to the frame side frame 3 whose position is fixed for understanding will be described. Further, in the following description, in order to distinguish each component of the frame body side frame 3 and the door side frame 4, with respect to the component parts of the frame body side frame 3, the suffix “a” is added to the reference numerals of each component. The component parts will be described by adding a subscript “b” to the reference numerals of the respective parts.

  FIG. 12 is a cross-sectional view of the hidden hinge in the open state. As shown in FIG. 12, in the state where the hidden hinge is opened, as described above with reference to FIG. 8, the connecting member 5 opens the storage chamber 8 in both the frame body side frame 3 and the door side frame 4. Located on the side. At this time, in the second slider 16 a of the frame side frame 3, the link shaft hole 44 a is located on the opening side of the frame side frame 3, and the connection shaft hole 43 a is located on the bottom side of the frame side frame 3. The first bearing 23 and the second bearing 26 of the link member 6 are connected by a first shaft pin 45 and a second shaft pin 46, respectively. On the other hand, in the second slider 16 b of the door side frame 4, the link shaft hole 44 b is located on the bottom surface side of the frame body side frame 3, and the connection shaft hole 43 b is located on the opening side of the frame body side frame 3. The bearing 23 and the second bearing 26 of the link member 6 are connected by a first shaft pin 45 and a second shaft pin 46, respectively.

  In this state, as shown by the arrow in FIG. 13, when the door-side frame 4 is pushed up and the connecting member 5 is raised, the pinion 22 of the connecting member 5 and the rack 10a of the frame-side frame 3 are engaged, and the second slider 16a is in the guide groove. It is guided by 17 and moves downward in the figure. Since the relative positions of the connecting shaft hole 43 and the link shaft hole 44 of both the second sliders 16 are fixed, the link member 6 rises in the same manner as the connecting member 5, and as a result, the second frame of the door side frame 4 is raised. The angle between the slider 16b and the connecting member 5 changes integrally with the door-side frame 4 in conjunction with the slider 16b. Further, since the relative positions of the connecting shaft hole 43 and the link shaft hole 44 of the link member 6 are fixed, the angles of the connecting member 5 and the door side frame 4 also change. Furthermore, since the pinion 22b of the connecting member 5 is engaged with the rack 10b, the second slider 16b moves to the bottom side of the storage chamber according to the change in the angle of the connecting member 5.

  When the door-side frame 4 further moves upward from the state of FIG. 13 and the connecting member 5 rises, the second slider 16a of the frame-side frame 3 is guided by the guide groove 17 and moves downward in the figure as described above. To do. Along with this, the link member 6 rises, the second slider 16b of the door side frame 4 is interlocked, and the angle between the door side frame 4 and the connecting member 5 changes, so that the second slider 16b becomes the storage chamber. Move to the bottom side of 8.

  Thus, according to the hidden hinge concerning this embodiment, interlocking of a pair of frames 2 can be ensured with simple composition. In the above description, the operation from the state in which the hidden hinge is opened to the bound state has been described, but the operation in the reverse direction is naturally interlocked by the same mechanism.

  In addition, since the connecting member and the link member that connect the pair of frames can be configured by leaving a sufficient thickness around the first bearing 23 and the second bearing 26, the resin is inferior in strength compared to metal. Even if it manufactures using etc., sufficient intensity | strength can be implement | achieved and the cost reduction of a hidden hinge can be implement | achieved.

  As described above, the hidden hinge according to the present embodiment is provided with the link member 6 separately from the connecting member 5 that connects the pair of frames 2, and the first bearing 23 of the connecting member and the second bearing 26 of the link member 6. Are connected to the frame via the second slider 16 so as to be at different positions in the depth direction of the opening, for example. Therefore, the connecting member 5, the link member 6, and the second slider 16 constitute a four-bar mechanism having the first bearing 23 and the second bearing 26 as rotation axes. Therefore, it can be set as the structure which can be interlocked with the angle change of the connection member 5 and one frame as an angle change with the other frame.

  Further, since both ends of the connecting member 5 are configured as bent portions, the connecting member and the link member can be connected to the frame at different positions in the depth direction of the opening, and the opening and closing of the hidden hinge is also possible. The angle can be increased.

  In addition, this invention is not limited to the said embodiment, It can implement in another various aspect. For example, in the present embodiment, the first slider 15 is also provided outside the connecting member, and the guide groove 17 for guiding the first slider is provided. However, the first shaft pin of the connecting member is directly connected to the inner surface of the frame. It may be fitted into a guide guide extending in the depth direction of the storage chamber 8 provided in the frame and supported by the connecting member on the frame. According to this configuration, since the first slider 15 can be omitted, the number of parts can be reduced.

  Further, for example, in the present embodiment, the pinion 22 is integrally provided on the distal end side of the bent portion 21 of the connecting member. However, the pinion with the first bearing 23 of the bent portion 21 as the rotation center is referred to as the connecting member 5. It may be provided as a separate member.

  The pinion is provided with the first bearing 23 of the bent portion 21 as the center of rotation, and the rack is linearly provided on the inner surface of the side wall of the storage chamber. This is for facilitating the configuration. Therefore, if the design allows the non-linear movement of the slider, the position of the rotation center and the shape of the rack may be different from those in the above embodiment.

  The hidden hinge according to the present invention is used by opening and closing the frame of the opening and the door or between the doors and the door.

DESCRIPTION OF SYMBOLS 1 Hidden hinge 2 Frame 3 Frame side frame 4 Door side frame 5 Connection member 6 Link member 7 Screw hole 8 Storage chamber 9 Opposing surface 10 Rack 11 Guide groove formation rib 12 Groove member attachment rib 13 Bottom wall 14 Insertion hole 15 1st Slider 16 Second slider 17 Guide groove 18 Engagement groove 19 Insertion claw 20 Main body part 21 Bent part 22 Pinion 23 First bearing 26 Second bearing 40 Groove member 42 Bearing hole 43 Connection shaft hole 44 Link shaft hole 45 First shaft Pin 46 2nd axis pin

Claims (5)

A pair of frames provided with storage chambers that open at opposite positions in a closed state;
A slider provided to be slidable in the depth direction of the storage chamber of the frame;
A first bearing is formed at the tip of the bent portion provided at both ends, and a coupling member coupled to the frame via the slider ;
Second ends are provided with second bearings, the intermediate portion is not connected to the connecting member, and is connected to the frame via the slider so that the fixed shaft of the connecting member and the fixed shaft of the link member are at different positions. A link member,
A pinion provided at a bent portion of the connecting member;
A rack meshing with the pinion provided on the inner surface of the frame;
Characterized in that it comprises a hidden hinge.   The hidden hinge according to claim 1, wherein the fixed shaft of the connecting member and the fixed shaft of the link member are provided at different positions in the depth direction of the storage chamber. 3. The hidden hinge according to claim 1, wherein the pinion is provided with the first bearing of the bent portion as a rotation center. 4. 4. The hidden hinge according to claim 1, wherein the pinion is provided integrally with the connecting member on an outer peripheral surface of the bent portion. 5. Wherein the frame includes a guide portion for the slider and engaging the opposing inner surfaces, the slider is characterized in that movably arranged along the guide portion, any one of claims 1 to 4 1 Hidden hinges listed on one.

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