JP2014114618A - Fitting structure for stay - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fitting structure for a stay such that the stay hardly falls during use and is easy to remove when removed.SOLUTION: A first hole 11b1 is bored in a first arm 11 of a stay, and a second hole 11b2 is bored at a position distant from the first hole 11b1. A connector 41 has a fitting part 41a which is fitted in the first hole 11b1 and a flexible part 41b which is run through the second hole 11b2 and has a hook 41d atop. The hook 41d engages a wall part 11d, on a side apart from the fitting part 41a, of a wall part at a periphery of the second hole 11b2 so as to prevent the first arm 11 from coming out of the connector 41. The flexible part 41b is bent so that the hook 41d comes close to the fitting part 41a, and the first arm 11 can be thereby extracted from the connector 41.

Description

  The present invention relates to a stay attachment structure for attaching a stay to a door and a main body of a furniture or the like, and more particularly to a stay attachment structure for attaching a stay to furniture or the like whose door rotates around a horizontal rotation axis.

  Furniture whose doors rotate around a horizontal rotation axis is used, for example, in kitchen hanging cabinets. Since the kitchen cabinet is arranged near the ceiling, it is convenient to open the door upward. The stay is interposed between the door and the main body so as to support the weight of the door opened at an arbitrary opening angle or to close the door slowly.

  In the furniture in which the door rotates around the horizontal rotation axis, there is a problem that the moment of the door varies depending on the opening angle of the door. For example, when the door is opened upward, when the door is in the maximum open position, a large moment is applied to the stay from the door. On the other hand, when the door is close to the closed position, the stay takes only a small moment from the door.

  As shown in FIG. 18 (a), a typical stay includes a first arm 1 and a second arm 2 that are coupled so as to be rotatable around a rotation axis in two directions opposite to each other (Patent Document 1). reference). The free end of the first arm 1 is rotatably connected to the main body, and the free end of the second arm 2 is rotatably connected to the door. The first arm 1 and the second arm 2 rotate freely in one direction and with a resistance force caused by a frictional force in the opposite direction. When opening the door, the first and second arms 1 and 2 rotate freely with respect to each other. For this reason, the door can be opened with a light force. On the other hand, when the hand is released from the door that has been opened to an arbitrary angle, the door attempts to return to a position that closes due to its own weight. However, when the first arm 1 and the second arm 2 rotate in the other direction, a frictional force acts between the first arm 1 and the second arm 2, so that the door opened at an arbitrary angle. It becomes possible to hold the position of the door. When closing the door, the door is pushed in the closing direction, and the first arm 1 and the second arm 2 are rotated in the other direction against the resistance force of the first arm 1 and the second arm 2.

  The stay attachment structure for attaching the stay to the door and the main body is as follows. As shown in FIG. 18A, washers 3 and 4 are provided to which the free ends of the first arm 1 and the second arm 2 are rotatably connected. The washers 3 and 4 are attached to the main body and the door using screws. The shaft body 5 is fixed to the washers 3 and 4 by fixing means such as caulking. As shown in FIG. 18B, a cylindrical connector 6 is rotatably supported on the shaft body 5. A plurality of slits 6 a parallel to the rotation axis are provided in the circumferential direction at the upper end portion of the tubular connector 6. A hole 1 a into which the connector 6 is fitted is formed in the free end of the first arm 1. By fitting the connecting tool 6 into the hole 1a, the hook 6b of the connecting tool 6 is engaged with the first arm 1 and the first arm 1 is prevented from coming off the connecting tool 6.

  As another stay mounting structure, as shown in FIGS. 19 (a) and 19 (b), Patent Document 2 has a pair of hook-like upright pieces 8 projecting from a cylindrical connector 7 so that A stay mounting structure in which a hook 8a is provided on the upright piece 8 to prevent the first arm 1 from coming off is described.

  The stay can be removed from the connecting member for adjusting the frictional force or cleaning the inside of the cabinet. That is, the stay is detachably attached to the connector.

German utility model 20205405 JP 2010-168807 A

  However, in the stay mounting structure described in Patent Document 1, there is a problem that the stay is easily detached from the coupling tool when a twisting force is applied to the first stay. When an object stored in the cabinet is taken out, if the object hits the stay, the stay will come off from the coupling tool even when the stay is in use.

  In the stay mounting structure described in Patent Document 2, the hook of the standing piece prevents the stay from coming off, so that the stay can be prevented from coming off during use. However, there is a problem that it takes time to remove the stay from the coupling tool. To remove the stay, it is necessary to bend the hook-like upright piece to remove the hook from the first arm or the second arm. Often the coupler is a small part. In order to bend the hook-like standing piece, it takes time and effort to remove the pulling stay with the other hand while applying the tip of the driver to the hook-like standing piece and bending the hook-like standing piece with the tip of the driver.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a stay mounting structure that is not easily detached during use and is easy to remove when the stay is removed.

  In order to solve the above-mentioned problem, the invention described in claim 1 is characterized in that a stay having a first arm and a second arm that are connected to each other in two opposite directions so as to be rotatable around a rotation shaft, A coupling tool rotatably supported by the washer, and the first arm or the second arm is provided with a first hole and at a position away from the first hole. A second hole is opened, and the connector has a fitting part fitted into the first hole, and a flexible part that is passed through the second hole and has a hook at the tip, The first arm or the second arm comes out of the connector by engaging the hook with the wall portion on the side away from the fitting portion of the wall portion around the second hole. The flexible portion is bent so that the hook approaches the fitting portion. By a mounting structure of the stay which can be pulled out of the first arm or the second arm from said coupling.

  According to a second aspect of the present invention, in the stay mounting structure according to the first aspect, the second hole is disposed closer to the rotating shaft of the stay than the first hole. To do.

  According to a third aspect of the present invention, in the stay mounting structure according to the first or second aspect, when the flexible portion of the connector is passed through the second hole, the amount of bending of the flexible portion gradually increases. The second hole is formed with an inclined surface in contact with the hook of the flexible part.

  According to a fourth aspect of the present invention, in the stay mounting structure according to any one of the first to third aspects, the fitting portion of the connector is formed in a cylindrical shape and is coupled to the washer. The shaft body is rotatably fitted.

  According to the first aspect of the present invention, if the fitting portion (or the free end portion of the arm) and the flexible portion of the coupler are picked up by, for example, the thumb and the index finger, the fitting portion (or the free end portion of the arm) The flexible part can be bent easily with the support. If the stay is pulled with the other hand in a state where the hook of the flexible portion is removed from the first arm or the second arm, the stay can be easily removed from the coupling tool. Therefore, it is possible to obtain a stay mounting structure that is not easily detached during use and is easy to remove when removed.

  According to invention of Claim 2, it can prevent that a 1st arm or a 2nd arm becomes long by providing a 2nd hole inside a 1st hole. If the second hole is provided outside the first hole, the first arm or the second arm becomes longer as the second hole is provided.

  According to the invention of claim 3, when connecting the first arm or the second arm to the connector, while fitting the fitting portion into the first hole of the first arm or the second arm, A flexible part can be easily put in the second hole.

  According to the fourth aspect of the present invention, since the connector is guided by the peripheral surface of the shaft body, the rotation of the connector is stabilized.

The perspective view which shows the example which attached the stay to the upper opening type cabinet using the stay attachment structure of one Embodiment of this invention External view of stay (FIG. 2 (a) is a front view, FIG. 2 (b) is a side view) Exploded perspective view of stay (view from above) Exploded perspective view of the stay (viewed from below) Cross section of stay FIG. 6 (a) shows a plan view, FIG. 6 (b) shows a cross-sectional view, FIG. 6 (c) shows a side view, and FIG. 6 (d) shows a bottom view. Indicate) FIG. 7A is a plan view, FIG. 7B is a cross-sectional view, FIG. 7C is a side view, and FIG. 7D is a bottom view. Indicate) Top view of the second arm built into the stay Detailed view of disk, cam base, and second arm (FIG. 9A shows a state in which the cam base is moved toward the disk, and FIG. 9B shows a state in which the cam base is separated from the disk) Exploded perspective view of washer, connector, and shaft Perspective view of washer, connector, and shaft in assembled state Detailed view of assembled washer, connector and shaft (FIG. 12 (a) shows a plan view and FIG. 12 (b) shows a sectional view) The figure which shows the process in which a 1st arm is attached to a connector (FIG. 13 (a) shows before attachment, FIG.13 (b) shows during attachment, FIG.13 (c) shows after attachment) Exploded perspective view of washer, connector, and shaft Sectional view of the washer, connector, and shaft in the assembled state Sectional drawing which shows the other example which integrated the connector and the shaft body. The top view which shows the other example of the 2nd hole opened in the 1st or 2nd arm FIG. 18A shows a conventional stay mounting structure (FIG. 18A shows a stay mounting structure attached to a cabinet, and FIG. 18B shows a cross-sectional view of the stay mounting structure) The figure which shows the attachment structure of the conventional stay (FIG. 19 (a) shows the attachment structure of the stay attached to the cabinet, FIG.19 (b) shows the perspective view of a coupling tool)

  A stay mounting structure according to a first embodiment of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 shows an example in which the stay mounting structure of the present embodiment is mounted on a top-opening type cabinet. The stay includes a first arm 11 and a second arm 12 that are coupled to each other so as to be rotatable around a rotation axis C. The free end of the first arm 11 is rotatably attached to the inner wall surface of the box-shaped main body 13 via a washer 15. A shaft body 21 parallel to the rotation axis C is fixed to the washer 15. The free end of the first arm 11 is rotatably connected to the shaft body 21. The free end of the second arm 12 is rotatably attached to the door 14 via a washer 16. A shaft body 22 parallel to the rotation axis C is fixed to the washer 16. The free end of the second arm 12 is rotatably connected to the shaft body 22. When opening the door 14, the first arm 11 and the second arm 12 freely rotate in the (1) direction, so that the stay does not generate resistance.

  The stay of this embodiment has a free stop function or a slow-down function. The free stop function is a function in which the stay maintains an arbitrary opening angle of the door 14 even when the door 14 is released after the door 14 is opened to an arbitrary angle. The slow-down function is a function that allows the stay to close the door 14 slowly. Increasing the friction force inside the stay provides a free stop function, and reducing the friction force inside the stay provides a slow-down function.

  The door 14 is coupled to the upper portion of the main body 13 via a hinge 17 so as to be rotatable around a horizontal rotation axis. The hinge 17 may be a uniaxial hinge having a constant instantaneous center or a slide hinge that moves the instantaneous center. Although FIG. 1 shows an example in which the hinge 17 is provided at the upper part of the main body 13 and the door 14 is opened upward, the hinge 17 may be provided at the lower part of the door 14 and the door 14 may be opened downward.

  FIG. 2 shows an external view of the stay mounting structure. 2A is a front view of the stay mounting structure, and FIG. 2B is a side view of the stay mounting structure. The stay includes a first arm 11 and a second arm 12 that are coupled to each other so as to be rotatable around a rotation axis. The first arm 11 and the second arm 12 have disk-like connecting portions 11a and 12a at the end on the connecting side, and are connected to each other at the connecting portions 11a and 12a so as to be rotatable. The center of the coupling parts 11a, 12a is the rotation axis C of the stay. The connecting portion 11a is provided with a resistance adjusting screw 18 that adjusts the resistance generated when the first arm 11 and the second arm 12 rotate. For example, when the resistance adjusting screw 18 is rotated clockwise, the resistance is increased, and when it is rotated counterclockwise, the resistance is decreased. A washer 15 attached to the main body 13 is attached to the free end of the first arm 11 so as to be rotatable around the shaft body 21. A washer 16 attached to the door 14 is attached to the free end of the second arm 12 so as to be rotatable around the shaft body 22. The rotation axis C and the shaft bodies 21 and 22 are parallel to each other.

  When the door 14 is opened and closed, the first arm 11 and the second arm 12 rotate around the rotation axis C simultaneously. In other words, the second arm 12 rotates relative to the first arm 11. Hereinafter, for convenience of explanation, it is assumed that the rotation of the first arm 11 is fixed and the second arm 12 is rotated.

  3 and 4 are exploded perspective views of the stay mounting structure. 3 shows an exploded perspective view of the stay mounting structure as viewed from above, and FIG. 4 shows an exploded perspective view of the stay mounting structure as viewed from below. The stay includes a friction force generation mechanism 24 that generates a friction force, and a torque transmission mechanism 25 that transmits torque. The frictional force generation mechanism 24 presses the friction plates 31 and 32 against the first arm 11 to generate a frictional force. The disk 34 is joined to the first arm 11 via the friction plate 32, and is joined to the first arm 11 by the frictional force of the friction plate 32.

  The torque transmission mechanism 25 meshes the disc 34 and the cam base 36, releases the mesh, transmits the torque of the second arm 12 to the first arm 11, and cancels the transmission. When the disk 34 and the cam base 36 are engaged with each other, the torque of the second arm 12 is transmitted to the first arm 11 through the disk 34 and the friction plates 31 and 32. When the torque of the second arm 12 is larger than the torque caused by the friction force of the friction plates 31 and 32, the second arm 12, the disk 34, the cam base 36, and the friction plates 31 and 32 are integrally formed with the first arm 11. Rotates with resistance.

  When the meshing between the disc 34 and the cam base 36 is released, the torque of the second arm 12 is not transmitted to the first arm 11, and the second arm 12 and the cam base 36 are integrated with the first arm 11 and It rotates freely with respect to the disk 34.

  The structure of each part of the stay is as follows. The first arm 11 includes a disk-shaped connecting portion 11a and a lever portion 11b protruding in the radial direction from the connecting portion 11a. The disk-shaped connecting portion 11a includes a surrounding annular crown 11a1 and an annular ring plate 11a2 provided inside the crown 11a1. A through hole 11a3 is opened in the center of the ring plate 11a2. A disc-shaped fitting portion 39a (see FIG. 4) of the lid member 39 is fitted into the through hole 11a3. The rotation of the first arm 11 is guided by the fitting portion 39 a of the lid member 39.

  A washer 15 is rotatably attached to the free end portion of the lever portion 11b via a shaft body 21 and a connector 41. The shaft body 21 is caulked and fixed to the washer 15. A coupling tool 41 is fitted to the shaft body 21 so as to be rotatable around the shaft body 21. The free end of the lever portion 11b is detachably connected to the connector 41. The shaft body 21 and the washer 15 are made of metal. The connector 41 rotates with respect to the shaft body 21 and the washer 15 which are integrally coupled by caulking.

  The connector 41 includes a cylindrical fitting portion 41a to which the shaft body 21 is fitted, and a flexible portion 41b that protrudes laterally from the fitting portion 41a and is bent into an L shape. The free end part of the lever part 11b is connected with the connection tool 41 so that attachment or detachment is possible. A circular first hole 11b1 and a square second hole 11b2 are opened at the free end of the lever portion 11b. The second hole 11b2 is disposed closer to the rotation axis C than the first hole 11b1, that is, inside. The fitting portion 41a of the connector 41 is inserted into the first hole 11b1. The flexible portion 41b of the connector 41 is passed through the second hole 11b2. The detailed structure of the washer 15, the shaft 21, the connector 41, and the free end of the lever portion 11b will be described later.

  The disc-shaped ring plate 11 a 2 of the first arm 11 is sandwiched between a pair of friction plates 31 and 32. The friction plates 31 and 32 are formed in an annular shape so that the fitting portion 39a of the lid member 39 can be inserted. The lid member 39 and the disk 34 are coupled so as not to be relatively rotatable, and the pair of friction plates 31 and 32 are sandwiched therebetween so as not to be relatively rotatable. In the center of the friction plate 31, a hole to be fitted into the fitting portion 39 a of the lid member 39 is formed. The friction plate 31 has a plurality of holes 31a in the circumferential direction in which the plurality of protrusions 39b1 of the lid member 39 are fitted. A pocket 31b for storing lubricating oil is formed between the holes 31a. The friction plate 32 has a plurality of holes 32a in the circumferential direction in which the protrusions 34a of the disk 34 are fitted. A pocket 32b for storing lubricating oil is formed between the holes 32a.

  The lid member 39 includes a closed disk 39b that covers the ring plate 11a2 of the first arm 11, and a disk-shaped fitting portion 39a (see FIG. 4) that protrudes from the closed disk 39b. A projection 39b1 that fits into the hole 31a of the friction plate 31 is formed on the closed disk 39b. A cross-shaped recess 39a1 is formed in the fitting part 39a. When the cross-shaped protrusion 34b (see FIG. 3) of the disk 34 is fitted into the cross-shaped recess 39a1 of the fitting portion 39a, the lid member 39 is non-rotatably coupled to the disk 34.

  As shown in the sectional view of FIG. 5, the resistance adjusting screw 18 is screwed into the disk 34. A disc spring 33 as an elastic member is interposed between the resistance adjusting screw 18 and the lid member. When the closing degree of the resistance adjusting screw 18 is adjusted, the force with which the friction plate 31.32 presses the first arm 11 is adjusted.

  FIG. 6 shows a detailed view of the disk 34. The disk 34 is disposed outside the disk-shaped main body 34-1, a cylindrical screw 34-2 protruding from the center of the main body 34-1 in the direction of the rotation axis C, and the screw 34-2. And a cylindrical guide portion 34-3. A plurality of protrusions 34a that fit into the holes 32a of the friction plate 32 are provided on the upper surface of the cylindrical main body 34-1 in the circumferential direction. A large number of teeth 42 are formed on the lower surface of the main body 34-1. The teeth 42 are arranged in a ring shape around the rotation axis C. As shown in the enlarged view of FIG. 9B, the side shape of the tooth 42 is formed in a triangle. The tooth 42 includes a first surface 42a disposed in a vertical plane including the rotation axis C, and a second surface 42b inclined with respect to the first surface 42a. As shown in FIG. 6D, the tooth traces of the teeth 42 extend in the radial direction.

  As shown in FIG. 6B, screws are formed on the inner side and the outer side of the cylindrical screw portion 34-2. As shown in FIG. 5, the resistance adjusting screw 18 is screwed inside the screw portion 34-2. A collar 38 for fixing the bearing 37 is screwed on the outside of the threaded portion 34-2. The bearing 37 is a sliding bearing and supports the second arm 12 rotating around the rotation axis C.

  As shown in FIG. 5, the cam base 36 is fitted into the cylindrical guide portion 34-3. The cam base 36 is movable in the direction of the rotation axis C along the cylindrical guide portion 34-3 of the disk 34. Between the guide portion 34-3 of the disk 34 and the cam base 36, a resin ring 35 (O-ring) is provided as a position holding means. The resin ring 35 is supported by the cam base 36. The resin ring 35 allows the cam base 36 to move in the direction of the rotation axis C with respect to the disk 34 and temporarily holds the position of the cam base 36 in the direction of the rotation axis C. The resin ring 35 allows the cam base 36 to rotate around the rotation axis C.

  FIG. 7 shows a detailed view of the cam base 36. The cam base 36 is formed in an annular shape. A large number of teeth 44 are formed on the surface of the cam base 36 facing the disk 34. The teeth 44 mesh with the teeth 42 of the disk 34. The teeth 44 are arranged in a ring around the rotation axis C. As shown in the enlarged view of FIG. 9B, the side shape of the tooth 44 is formed in a triangle. The teeth 44 include a first surface 44a disposed in a vertical plane including the rotation axis C, and a second surface 44b inclined with respect to the first surface 44a. As shown in FIG. 7A, the tooth traces of the teeth 44 extend in the radial direction. As shown in FIG. 7B, a protrusion 47 that supports the resin ring 35 is formed on the inner peripheral surface of the cam base 36.

  As shown in FIG. 7C, a recess 45 that functions as a cam is formed on the surface of the cam base 36 that faces the second arm 12. A plurality of recesses 45 are provided in the circumferential direction. As shown in the enlarged view of FIG. 9A, the side surface shape of the recess 45 is formed in a square shape. The recess 45 includes a vertical surface 45a disposed in a vertical surface including the rotation axis C, and an inclined surface 45b that faces the vertical surface 45a and is inclined with respect to the vertical surface 45a.

  As shown in FIG. 3, the second arm 12 includes a disk-shaped connecting portion 12 a and a lever portion 12 b that protrudes in the radial direction from the connecting portion 12 a. The disk-shaped connecting portion 12a includes a surrounding annular crown 12a1 and an annular ring plate 12a2 inside the crown 12a1. A through hole 12a3 is opened in the center of the ring plate 12a2. The bearing 37 is fitted into the through hole 12a3.

  The washer 16 is rotatably attached to the free end portion of the lever portion 12b via the shaft body 22 and the connector 46. The shaft body 22 is fixed to the washer 16 by caulking. A connector 46 is fitted to the shaft body 22 so as to be rotatable around the shaft body 22. The free end of the lever portion 12b is detachably connected to the connector 46. The connector 46 rotates with respect to the shaft body 22 and the washer 16 which are integrally coupled by caulking.

  The coupling tool 46 includes a cylindrical fitting portion 46a into which the shaft body 22 is fitted, and a flexible portion 46b that protrudes laterally from the fitting portion 46a and is bent into an L shape. The free end of the lever portion 12b is detachably connected to the connector 46. A circular first hole 12b1 and a square second hole 12b2 are opened at the free end of the lever portion 12b. The second hole 12b2 is disposed closer to the rotation axis C than the first hole 12b1, that is, inside. The fitting portion 46a of the connector 46 is inserted into the first hole 12b1. The flexible portion 46b of the connector 46 is passed through the second hole 12b2. The detailed structure of the washer 16, the shaft body 22, the connector 46, and the free ends of the lever portion 12b will be described later.

  As shown in the plan view of the second arm 12 in FIG. 8, a plurality of convex portions 48 functioning as cams are formed on the surface of the second arm 12 facing the cam base 36. The plurality of convex portions 48 of the second arm 12 fit into the plurality of concave portions 45 of the cam base 36. When the second arm 12 is rotated around the rotation axis C, the cam base 36 moves in the direction of the rotation axis C by the action of the cam. As shown in the enlarged view of FIG. 9A, the side surface shape of the convex portion 48 is formed in a square shape. The convex portion 48 includes a vertical surface 48a disposed in a vertical surface including the rotation axis C, and an inclined surface 48b that faces the vertical surface 48a and is inclined with respect to the vertical surface 48a.

  FIG. 9 shows a detailed view of the engagement of the disk 34, cam base 36, and second arm 12. FIG. 9A shows a state where the second arm 12 is rotated in the other direction (2). FIG. 9B shows a state in which the second arm 12 is rotated in one direction (1) with respect to the first arm 11.

  As shown in FIG. 9A, when the second arm 12 is rotated in the other direction (2), the inclined surface 48b of the convex portion 48 of the second arm 12 is changed to the inclined surface 45b of the concave portion 45 of the cam base 36. Touch. Then, the cam base 36 moves in the direction of the rotation axis C toward the disk 34 according to the principle of the cam. Eventually, the teeth 44 of the cam base 36 mesh with the teeth 42 of the disk 34. Even when the teeth 44 of the cam base 36 are engaged with the teeth 42 of the disk 34, the convex portion 48 of the cam base 36 remains fitted in the concave portion 45 of the disk 34. Therefore, when the second arm 12 is rotated in the other direction (2), the second arm 12, the cam base 36, and the disk 34 are integrally rotated in the other direction (2). At this time, the friction plates 31 and 32 also rotate in the other direction (2), and a resistance force is generated.

  As shown in FIG. 9B, when the second arm 12 is rotated in one direction (1), the vertical surface 48a of the convex portion 48 of the second arm 12 becomes the vertical surface 45a of the concave portion 45 of the cam base 36. Touch. For this reason, the 2nd arm 12 and the cam base 36 rotate in one direction (1) integrally. As shown in FIG. 9A, since the teeth 44 of the cam base 36 mesh with the teeth 42 of the disk 34, the cam base 36 is driven by the cam principle of the second surface 44b of the teeth 44 and the second surface 42b of the teeth 42. Moves away from the disk 34. Here, the vertical surface 48 a of the convex portion 48 and the vertical surface 45 a of the concave portion 45 allow the cam base 36 to move away from the disk 34. When the cam base 36 moves away from the disk 34, the second arm 12 and the cam base 36 freely rotate in one direction (1). When the cam base 36 is separated from the disk 34, the resin ring 35 maintains its position.

  10 to 12 are detailed views of the washer 15, the coupling tool 41, and the shaft body 21 attached to the free end of the first arm 11. 10 shows an exploded perspective view, FIG. 11 shows a perspective view in an assembled state, and FIG. 12 shows a detailed view. As described above, the shaft body 21 is caulked and fixed to the washer 15. The connecting member 41 is supported by the shaft body 21 and the washer 15 integrally coupled so as to be rotatable around the rotation shaft.

  As shown in FIG. 10, the washer 15 is formed in a triangular plate shape. A plurality of mounting holes 15 a are formed in the washer 15. When the washer 15 is attached to the main body 13 of the cabinet, a screw is passed through the attachment hole 15a. The central portion 15b of the washer 15 is raised so that the back surface of the central portion 15b does not contact the main body 13 of the cabinet (see FIG. 12B). A through hole 15 c through which the caulking portion 21 c on the distal end side of the shaft body 21 passes is formed in the central portion 15 b of the washer 15.

  As shown in FIG. 10, the shaft body 21 includes a large-diameter retaining portion 21a on the proximal end side, a center guide portion 21b, and a caulking portion 21c on the distal end side. Each of the retaining portion 21a, the guide portion 21b, and the caulking portion 21c has a circular cross section. After the shaft body 21 is inserted into the fitting portion 41a of the connector 41, the caulking portion 21c of the shaft body 21 is caulked and fixed to the washer 15 (see FIG. 12B).

  As shown in FIG. 10, the connector 41 includes a cylindrical fitting portion 41a into which the shaft body 21 is fitted, and a flexible portion 41b that projects laterally from the fitting portion 41a. The fitting portion 41 a corresponds to the large-diameter portion 41 a 1 corresponding to the retaining portion 21 a of the shaft body 21 and the guide portion 21 b of the shaft body 21, and has a sliding portion 41 a 2 having a smaller diameter than the retaining portion 21 a of the shaft body 21. And comprising. Since the inner diameter of the sliding portion 41 a 2 is smaller than the outer diameter of the retaining portion 21 a of the shaft body 21, the coupling tool 41 is prevented from being removed from the shaft body 21. As shown in FIG. 10, the fitting part 41a is formed with a flange 41c protruding in the radial direction. The flexible portion 41b extends in a radial direction from a part in the circumferential direction of the flange 41c, bends 90 degrees, and then extends in the direction of the rotation axis C. As shown in FIG. 12B, a hook 41d is provided at the tip of the flexible portion 41b. The hook 41d is provided on the side away from the fitting portion 41a at the tip of the flexible portion 41b. The cross section of the hook 41d is formed in a tapered triangle toward the tip. The flexible portion 41b can be bent around the base end portion like a leaf spring.

  FIG. 13 shows a process of connecting the first arm 11 to the connector 41. As shown in FIG. 13A, the fitting portion 41a of the connector 41 is fitted into the circular first hole 11b1 of the first arm 11, and the flexible portion of the connector 41 is inserted into the square second hole 11b2. 41b is inserted. In this state, the first arm 11 is pushed toward the washer 15. The second hole 11b2 is formed with an inclined surface 11c in contact with the hook 41d of the flexible portion 41b. The inclined surface 11c is formed so that the amount of bending of the flexible portion 41b gradually increases when the flexible portion 41b of the connector 41 is passed through the second hole 11b2.

  As shown in FIG. 13B, the more the first arm 11 is pushed toward the washer 15, the greater the amount of bending of the flexible portion 41b. The amount of bending is greatest immediately before the first arm 11 contacts the flange 41c of the connector 41.

  As shown in FIG. 13C, when the first arm 11 is pushed in until it comes into contact with the flange 41c of the connector 41, the hook 41d comes out of the second hole 11b2, and the flexible portion 41b is bent. Restore. And the level | step-difference part of the hook 41d engages with the wall part 11d on the side away from the fitting part 41a among the wall parts around the 2nd hole 11b2. As a result, the first arm 11 is prevented from coming off the connector 41.

  When the first arm is removed from the connector 41, the fitting portion 41a (or the free end portion of the first arm 11) of the connector 41 and the flexible portion 41b are gripped by, for example, the thumb and the index finger. The flexible portion 41b can be easily bent while supporting the portion 41a (or the free end portion of the first arm 11) (FIG. 13 (c) → FIG. 13 (b)). In FIG. 13C, the part to be picked with a finger is surrounded by circles A, B, and C. If the stay is pulled with the other hand in a state where the flexible portion 41b is bent and the hook 41d is detached from the first arm 11, the stay can be easily removed from the connector 41 (FIG. 13B). (Fig. 13 (a)).

  14 to 15 show detailed views of the washer 16, the connecting tool 46, and the shaft body 22 attached to the free end of the second arm 12. FIG. 14 shows an exploded perspective view, and FIG. 15 shows a sectional view in an assembled state. The shaft body 22 is fixed to the washer 16 by caulking. The connecting tool 46 is supported by the shaft body 22 and the washer 16 to which the connecting tool 46 is integrally coupled so as to be rotatable around the rotation axis C. Since the structure of the shaft body 22 and the connection tool 46 is the same as that of the shaft body 21 and the connection tool 41 attached to the free end of the first arm 11, description thereof will be omitted.

  As shown in FIG. 14, the washer 16 is formed in a plate shape bent in an L shape. A plurality of mounting holes 16c are formed in the washer base 16b. A through hole 16d through which the caulking portion 22c on the distal end side of the shaft body 22 passes is formed in the connecting piece 16a bent 90 degrees from the base portion 16b. As shown in FIG. 1, since this washer 16 is attached to the door 14, it is necessary to attach the shaft body 22 to the connecting piece 16 a in contact with the door 14.

  As shown in FIG. 15, the connector 46 includes a cylindrical fitting portion 46 a into which the shaft body 22 is fitted, and a flexible portion 46 b that projects laterally from the fitting portion 46 a. A hook 46d is provided at the tip of the flexible portion 46b. The hook 46d is provided at the distal end of the flexible portion 46b on the side away from the fitting portion 46a. As shown in FIG. 3, the free end of the second arm 12 is detachably connected to the connector 46. The fitting portion 46a of the connector 46 is fitted into the circular first hole 12b1 of the second arm 12, and the flexible portion 46b of the connector 46 is inserted into the square second hole 12b2. As described above, the second arm 12 can be easily attached to and detached from the connector 46.

  The stay mounting structure according to the embodiment of the present invention has been described in detail above. The present invention is not limited to the above embodiment, and can be embodied in various embodiments without departing from the scope of the present invention.

  For example, in the above embodiment, the coupling members 41 and 46 are separated from the shaft bodies 21 and 22, and the shaft bodies 21 and 22 are caulked and fixed to the washers 15 and 16. However, as shown in FIG. 15, the coupling tool 52 may be integrated with the shaft body 51, and the integral coupling tool 52 and the shaft body 51 may be rotatably supported by the washer 53.

  In the above embodiment, the second holes 11b2 and 12b2 of the first arm 11 and the second arm 12 are closed square holes. However, as shown in FIG. 17, the second holes 11b2 and 12b2 can be cut out like a groove having one side open. Such a notch is also included in the second holes 11b2 and 12b2. The hooks 41d and 46d of the couplers 41 and 46 are hooked on the wall portions 11f and 12f of the second holes 11b2 and 12b2 apart from the first holes 11b1 and 12b1.

  The shape and structure of each component of the stay of the above embodiment are merely examples, and can be changed to various shapes and structures without changing the gist of the present invention.

DESCRIPTION OF SYMBOLS 11 ... 1st arm 12 ... 2nd arm 11b1, 12b1 ... 1st hole 11b2, 12b2 ... 2nd hole 11c ... Inclined surface 11d ... From a fitting part among wall parts around a 2nd hole Walls 15 and 16 on the remote side ... Washers 21 and 22 ... Shaft bodies 41 and 46 ... Connecting tools 41a and 46a ... Fitting parts 41b and 46b ... Flexible parts 41d and 46d ... Hook C ... Rotating shaft

Claims (4)

A stay having a first arm and a second arm that are rotatably coupled around two axes in two directions opposite to each other;
A washer,
A coupling tool rotatably supported by the washer,
In the first arm or the second arm, a first hole is opened and a second hole is opened at a position away from the first hole,
The connector includes a fitting portion that is fitted into the first hole, and a flexible portion that is passed through the second hole and has a hook at a tip thereof.
The first arm or the second arm is separated from the connector by engaging the hook with the wall portion on the side away from the fitting portion of the wall portion around the second hole. Can be prevented from coming out,
A stay mounting structure in which the first arm or the second arm can be removed from the connector by bending the flexible portion so that the hook approaches the fitting portion.   2. The stay mounting structure according to claim 1, wherein the second hole is disposed closer to the rotating shaft of the stay than the first hole.   When the flexible part of the connector is passed through the second hole, the second hole is inclined to contact the hook of the flexible part so that the amount of bending of the flexible part gradually increases. The stay mounting structure according to claim 1, wherein a surface is formed.   The stay according to any one of claims 1 to 3, wherein the fitting portion of the connector is formed in a cylindrical shape and is rotatably fitted to a shaft body coupled to the washer. Mounting structure.

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