JP6727571B2 - Hinge lock mechanism - Google Patents

Description

The present invention relates to a hinge lock mechanism that prevents a hinge device that supports an object from being opened and closed freely from coming out of a mounting hole formed in one object.

Conventionally, as this type of hinge lock mechanism, for example, there is one in a toilet toilet seat mounting structure disclosed in Patent Document 1.

In the toilet toilet seat mounting structure in the same document, after the adapter member of the shaft-shaped hinge device is inserted into the mounting hole of the holder portion of the toilet seat or the toilet lid, the leg portion of the spring clip is inserted into the groove provided in the adapter member. Be fitted. At this time, the leg portion of the spring clip is inserted through an insertion hole opened to the side of the holder portion of the toilet seat or the toilet lid. By fitting the leg portion of the spring clip through the insertion hole into the groove provided in the adapter member, the hinge device is prevented from coming off the mounting hole, and is fixed to the toilet seat or the toilet lid.

DE 10051805 A1

However, in the above-mentioned conventional hinge lock mechanism disclosed in Patent Document 1, in order to prevent the hinge device from coming off from the mounting hole of the holder part, it is necessary to prepare a fixture such as a spring clip separately from the hinge device. Further, in order to fit the spring clip in the groove of the adapter member, it is necessary to provide an insertion hole communicating with the mounting hole on the side of the holder portion of the toilet seat or the toilet lid. Therefore, in the conventional hinge lock mechanism described above, when manufacturing a toilet using the hinge device, a management step of managing the fixture such as the spring clip separately from the hinge device is required. In addition, when manufacturing a toilet seat or a toilet lid, a processing step of providing an insertion hole in the holder is also required. For this reason, conventionally, these management processes and processing processes have been a burden on the cost and work when manufacturing toilets, toilet seats, and lids.

The present invention has been made to solve such problems,
In a hinge lock mechanism that prevents a hinge device that supports open/close between objects from coming off from a mounting hole formed in one object,
A clamp is rotatably attached by a shaft to the tip side of the shaft portion of the hinge device that is inserted into the mounting hole.
When the clamp is inserted into the mounting hole of the shaft part, the guide part that protrudes from the tip of the shaft part and comes into contact with the inner surface of the mounting hole to rotate the clamp. It is characterized in that it is provided with a lock portion that rubs against the inner surface of the mounting hole within a range that exceeds once and is stretched over the inner surface of the mounting hole.

According to this configuration, when the shaft portion of the hinge device is inserted into the mounting hole formed in one of the objects, the guide portion of the clamp protruding from the tip of the shaft portion contacts the inner surface of the mounting hole to rotate the clamp. By moving the clamp, the lock portion of the clamp rubs the inner surface of the mounting hole within a range that exceeds the diameter of the mounting hole by a predetermined length and stretches the inner surface of the mounting hole. With the hinge device to which the clamp is attached, this tension on the inner circumference of the mounting hole of the lock part causes the lock part to move in the opposite direction unless a large force is applied to rub the lock part in the opposite direction within a range that exceeds the diameter of the mounting hole by a predetermined length. Will not return to the position of and will not come out of the mounting hole. Therefore, it is possible to prevent the hinge device from coming off the mounting hole without using a conventional fixture such as a spring clip. Therefore, it is not necessary to prepare a fixture such as a spring clip separately from the hinge device, and a management process of managing the fixture such as the spring clip separately from the hinge device can be omitted. Further, an insertion hole for passing a fixing tool such as a spring clip through the holder part is not required, and the processing step of forming the insertion hole in the holder part can be reduced. As a result, it is possible to reduce the cost and work load when manufacturing a toilet using a hinge device or when manufacturing a toilet seat/toilet lid.

Further, according to the present invention, in the radial direction of the shaft portion, before the insertion of the shaft portion into the mounting hole, the guide portion of the clamp is positioned deviated from the shaft toward the rotation side of the clamp, so that At the time of insertion, on the side opposite to the rotating side of the clamp, the lock part of the clamp rubs against the inner surface of the mounting hole by rubbing the inner surface of the mounting hole around the shaft with a radius that exceeds the diameter dimension of the mounting hole by a predetermined length once, The guide portion is in contact with the inner surface of the mounting hole on the rotating side of.

According to this configuration, when the shaft portion is inserted into the mounting hole, a moment is applied to the clamp by using the contact point of the guide portion with the inner surface of the mounting hole as an action point and the shaft as a fulcrum. Rotate to the side where the parts are displaced. Due to this rotation of the clamp, the lock portion rubs the inner surface of the mounting hole around the shaft with a radius that temporarily exceeds the diameter dimension of the mounting hole by a predetermined length on the side opposite to the rotating side of the clamp, and thus the inner surface of the mounting hole. Stick to. Further, the guide portion contacts the inner surface of the mounting hole on the rotating side of the clamp. Therefore, in the clamp, the lock portion and the guide portion project on the inner surfaces of the inner periphery of the mounting hole which face each other, and the hinge device is prevented from coming off from the mounting hole.

Further, the present invention is characterized in that the shaft is located on the central axis of the shaft part, and a plurality of clamps having the same outer shape are superposed on the front side and the back side and rotatably attached to the shaft part by the same shaft.

According to this configuration, when the shaft portion is inserted into the mounting hole, each of the front and back clamps has a moment at which the contact point of the guide portion with the inner surface of the mounting hole serves as the action point and the shaft serves as the fulcrum. Added in opposite directions, the moments cause the clamps to rotate in opposite directions. Therefore, the lock parts of the front side clamp and the back side clamp are bulged at positions symmetrical to the inner surfaces of the mounting hole facing each other, and the guide parts of the front side clamp and the back side clamp are It abuts on the inner surface of the inner periphery of the mounting hole, which is opposed to the inner surface, at a symmetrical position. Therefore, in each clamp, the lock portion and the guide portion apply symmetrical force to the opposing inner surfaces of the inner periphery of the mounting hole in a balanced manner and project the same, so that the hinge device is firmly prevented from coming off from the mounting hole.

Further, the present invention is
The shaft is located on the central axis of the shaft part, a plurality of clamps of the same outer shape are stacked on the front and back, and the clamp is rotatably attached to the shaft part by the same shaft.
In the radial direction of the shaft part, the clamps are positioned so that the guide part is displaced from the shaft on the pivot side of the clamp before being inserted into the mounting hole of the shaft part. On the rotation side, the lock part rubs the inner surface of the mounting hole around the shaft with a radius that exceeds the diameter dimension of the mounting hole by a predetermined length once, and thrusts the inner surface of the mounting hole, and the guide part contacts the inner surface of the mounting hole. Characterized by contact.

According to this configuration, when the shaft portion is inserted into the mounting hole, each of the front and back clamps has a moment at which the contact point of the guide portion with the inner surface of the mounting hole serves as the action point and the shaft serves as the fulcrum. Added in opposite directions, the moments cause the clamps to rotate in opposite directions. With the rotation of the clamp shown in the table, the lock portion rubs one inner surface of the mounting hole around the shaft with a radius that temporarily exceeds the diameter of the mounting hole by a predetermined length on the rotating side of the clamp. , The guide portion abuts on one inner surface of the mounting hole. Also, the rotation of the clamp on the back side causes the lock portion to face the inner surface of one of the mounting holes around the shaft with a radius that temporarily exceeds the diameter dimension of the mounting hole by a predetermined length on the rotation side of the clamp. The other inner surface of the mounting hole is rubbed against the other inner surface of the mounting hole, and the guide portion abuts the other inner surface of the mounting hole. Therefore, in each clamp, the lock portion and the guide portion apply symmetrical forces to the inner surfaces of the mounting hole, which are opposed to each other on the inner surface of the mounting hole, in a balanced manner and project the same, so that the hinge device is firmly prevented from coming off from the mounting hole.

Further, the present invention is
A clamp is rotatably attached to the tip side of the shaft via a link,
The shaft includes a first shaft that rotatably supports one end of the link on the shaft portion and a second shaft that rotatably supports the other end of the link on the clamp.
Before the second shaft is inserted into the mounting hole of the shaft part, the second shaft is closer to one end of the shaft part than the mounting position of the first shaft to the shaft part in the radial direction of the shaft part. In the axial direction, the guide portion is located closer to the tip end side of the shaft portion than the attachment position of the first shaft to the shaft portion, and the guide portion is projected from the tip end of the shaft portion. The clamp rotates about the first shaft until the clamp comes into contact with the positioning wall of the shaft, and in the axial direction of the shaft, the tip of the shaft is more than the mounting position of the first shaft on the shaft. It is characterized in that the lock portion is located on the side away from the inner surface of the mounting hole.

According to this configuration, when the shaft portion is inserted into the mounting hole, the guide portion protruding from the tip of the shaft portion contacts the inner surface of the mounting hole, so that the guide portion of the clamp projects from the tip of the shaft portion. It rotates in the direction of reducing the distance, and a force for rotating the link about the first shaft acts on the second shaft via the clamp. When the second shaft rotates about the first shaft with the length of the link as a radius, the lock portion of the clamp rotates. When the link rotates about the first axis and the straight line connecting the first axis and the second axis becomes perpendicular to the central axis of the shaft portion, the lock portion exceeds the diameter dimension of the mounting hole by a predetermined length. At this position of the lock portion, the force with which the lock portion is stretched against the inner surface of the mounting hole is maximized. After that, the clamp further rotates and comes into contact with the positioning wall of the shaft portion, so that the second shaft moves in the axial direction of the shaft portion such that the tip end of the shaft portion is located more than the mounting position of the first shaft to the shaft portion. Located on the side away from, the lock part is stretched over the inner surface of the mounting hole. In the hinge device to which the clamp is attached, this tension on the inner circumference of the mounting hole of the lock portion causes the lock portion to move to the original direction unless a large force is applied to move the lock portion in the opposite direction within a range that exceeds the diameter of the mounting hole by a predetermined length. Does not return to the position and does not come out of the mounting hole.

Further, the present invention is characterized by including a stopper that engages with the link or the clamp and prevents the link or the clamp from rotating in the opposite direction.

According to this configuration, the stopper prevents the link or the clamp from rotating in the reverse direction, so that the clamp does not rotate in the reverse direction. Therefore, when inserting the shaft portion into the mounting hole, it is not necessary for the operator to intentionally hold the clamp at an appropriate initial position where the clamp does not rotate in the reverse direction. Therefore, the hinge device can be easily handled when inserting the shaft portion into the mounting hole, and the workability of assembling the hinge device is improved.

ADVANTAGE OF THE INVENTION According to this invention, the management process of managing a fixture, such as a spring clip, separately from a hinge device, and the process of providing an insertion hole in a holder part can be reduced, and at the time of toilet manufacture, a toilet seat, The cost and work load at the time of manufacturing the toilet lid is reduced.

(A), (b) and (c) are a side view, a bottom view and a front view of a hinge device to which a hinge lock mechanism according to the first embodiment of the present invention is applied. (A) And (b) is a front view and a partially broken side view of each holder part of the toilet seat and toilet lid of a Western-style toilet. (A) is a longitudinal sectional view of the hinge lock mechanism before being inserted into the mounting hole of the shaft portion in the first embodiment, and (b) is a longitudinal sectional view of the hinge lock mechanism after being inserted into the mounting hole of the shaft portion. , (C) are enlarged views of (b). (A), (b) and (c) are a side view, a bottom view and a front view of a hinge device to which a hinge lock mechanism according to a second embodiment of the present invention is applied. (A) is a longitudinal sectional view of the hinge lock mechanism before being inserted into the mounting hole of the shaft portion in the second embodiment, and (b) is a longitudinal sectional view of the hinge lock mechanism after being inserted into the mounting hole of the shaft portion. , (C) are enlarged views of (b). (A), (b) and (c) are a side view, a bottom view and a front view of a hinge device to which a hinge lock mechanism according to a third embodiment of the present invention is applied. (A) is a longitudinal sectional view of the hinge lock mechanism before being inserted into the mounting hole of the shaft portion in the third embodiment, and (b) is a longitudinal sectional view of the hinge lock mechanism after being inserted into the mounting hole of the shaft portion. , (C) are enlarged views of (b). (A), (b) and (c) are a side view, a bottom view and a front view of a hinge device to which a hinge lock mechanism according to a fourth embodiment of the present invention is applied. (A) is a side view of a clamp which comprises the hinge lock mechanism by 4th Embodiment, (b) is a front view. (A) is a vertical cross-sectional view of the hinge lock mechanism before insertion into the mounting hole of the shaft portion in the fourth embodiment, and (b) is a vertical cross-sectional view of the hinge lock mechanism after insertion into the mounting hole of the shaft portion. , (C) are enlarged views of (b). (A), (b) and (c) is a side view, a bottom view and a front view of a hinge device to which a hinge lock mechanism according to a fifth embodiment of the present invention is applied. (A) is a front view of a clamp which comprises the hinge lock mechanism by 5th Embodiment, (b) is a side view. (A) is a longitudinal cross-sectional view of a link constituting the hinge lock mechanism according to the fifth embodiment, and (b) is a side view. (A) is a longitudinal sectional view of the hinge lock mechanism before being inserted into the mounting hole of the shaft portion in the fifth embodiment, and (b) is a longitudinal sectional view of the hinge lock mechanism after being inserted into the mounting hole of the shaft portion. Is.

Next, a mode for carrying out the present invention, in which the hinge lock mechanism according to the present invention is applied to a hinge device of a western-style toilet, will be described.

1A, 1B and 1C are a side view, a bottom view and a front view of a hinge device 10 to which a hinge lock mechanism according to a first embodiment of the present invention is applied. 2A and 2B are a front view and a partially cutaway side view of each holder portion 20 of the toilet seat and the toilet lid of the western-style toilet.

The hinge device 10 is configured by integrally forming the attaching/detaching part 11 and the rotary damper part 12 in one case 13 made of metal, resin, or the like. A hinge pin (not shown) is erected on the toilet bowl to which the toilet seat/toilet lid unit is attached, and the attachment/detachment portion 11 engages with the hinge pin when the hinge pin is inserted into the attachment/detachment hole 11a opened on the bottom surface thereof, and is attached/detached to/from the toilet bowl. To be done. Further, the shaft portion 14 projecting to the end of the rotary damper portion 12 is inserted into the mounting hole 20a of the holder portion 20 and fixed to the toilet seat and the toilet lid.

The hinge device 10 is attached between the objects of the toilet seat/toilet lid unit and the toilet in this way, and supports the toilet seat/toilet lid which is one of the objects so that it can be opened and closed with respect to the toilet bowl of the other object. To do. The rotary damper portion 12 is configured by housing the shaft portion 14 and a viscous fluid in a case 13, and imparts resistance to rotation of the shaft portion 14 by the viscous fluid. By applying this resistance, the rotation of the toilet seat/toilet lid during opening and closing is buffered.

A clamp 15 is rotatably attached by a shaft 16 to the tip 14a side of the shaft portion 14 of the hinge device 10 inserted into the attachment hole 20a. The clamp 15 is formed of resin, metal, or the like into a triangular flat plate shape. In this embodiment, the clamp 15 is formed by pressing a metal plate, and is formed by roundly chamfering a guide portion 15a at one corner of the base of the triangle and a lock portion 15b at the other corner. There is. Further, a shaft hole is located near the apex of the triangle and is located on the central axis of the shaft portion 14 and opens.

The shaft 16 passes through the shaft hole of the clamp 15 and has both ends thereof passed through the shaft holes of the shaft portion 14, and is supported and fixed by the shaft portion 14. The shaft 16 is a cylindrical or columnar member having a shaft diameter size that fits into the shaft hole of the clamp 15, and is a spring pin in this embodiment. When the guide portion 15a is inserted into the mounting hole 20a of the shaft portion 14, the guide portion 15a protrudes from the tip 14a of the shaft portion 14 and contacts the inner surface of the mounting hole 20a, thereby rotating the clamp 15 about the shaft 16. The lock portion 15b rubs the inner surface of the mounting hole 20a around the shaft 16 by the rotation of the clamp 15 and stretches on the inner surface of the mounting hole 20a. The clamp 15 and the shaft 16 constitute a hinge lock mechanism that prevents the hinge device 10 that supports the space between the toilet seat/toilet lid unit and the toilet bowl from opening and closing from coming off from the respective mounting holes 20a formed in the toilet seat/toilet lid.

3A is a vertical cross-sectional view of the shaft portion 14 and the mounting hole 20a before the shaft portion 14 is inserted into the mounting hole 20a, and FIG. 3B is a state after the shaft portion 14 is inserted into the mounting hole 20a. A vertical cross-sectional view of the shaft portion 14 and the mounting hole 20a, and FIG. 3C is an enlarged view of FIG. 3B. In FIG. 3, the same parts as those in FIGS. 1 and 2 are designated by the same reference numerals and the description thereof will be omitted.

Before inserting the guide portion 15a of the clamp 15 into the mounting hole 20a of the shaft portion 14, the guide portion 15a is clamped from the shaft 16 in the radial direction of the shaft portion 14 as shown in FIGS. 1(a) and 3(a). It is located on the rotation side of 15 (upper side in the figure) with a shift of X mm.

When inserting the shaft portion 14 into the mounting hole 20a, as shown in FIGS. 3B and 3C, the lock portion 15b of the clamp 15 is attached to the mounting hole 20a on the side opposite to the rotating side of the clamp 15. The inner diameter of the mounting hole 20a is rubbed around the shaft 16 with a radius that exceeds the diameter dimension R of a predetermined length L1 to stretch the inner surface of the mounting hole 20a. In the present embodiment, due to this bulging of the lock portion 15b, the shaft portion 14 is positioned so as to be biased to one side in the radial direction of the mounting hole 20a. Therefore, the predetermined length L1, that is, the amount by which the lock portion 15b exceeds the radial dimension R is 0.3 mm on one side in the radial direction of the mounting hole 20a, while the radial dimension R of the mounting hole 20a is φ12.2 mm. Is set to.

Further, when the shaft portion 14 is inserted into the mounting hole 20a, the guide portion 15a contacts the inner surface of the mounting hole 20a on the rotating side of the clamp 15. In the guide portion 15a, the guide portion guide surface 15a1 abuts the bottom surface of the mounting hole 20a when the shaft portion 14 is initially inserted into the mounting hole 20a. When the shaft portion 14 is further inserted into the mounting hole 20a, the guide portion guide surface 15a1 rubs up the bottom surface of the mounting hole 20a until the tip 14a of the shaft portion 14 contacts the bottom surface of the mounting hole 20a. When the insertion of the shaft portion 14 into the mounting hole 20a is completed, the guide portion guide surface 15a1 moves to the upper end of the bottom surface of the mounting hole 20a, and the guide portion contact surface 15a2 contacts the inner peripheral side surface of the mounting hole 20a.

According to the hinge lock mechanism according to the present embodiment as described above, when the shaft portion 14 of the hinge device 10 is inserted into the mounting holes 20a formed in the holder portions of the toilet seat and the toilet lid, from the tip 14a of the shaft portion 14. The projecting guide portion 15a of the clamp 15 comes into contact with the bottom surface of the mounting hole 20a, and the clamp 15 receives a moment with the contact point of the guide portion 15a with the bottom surface of the mounting hole 20a as an action point and the shaft 16 as a fulcrum. This moment causes the clamp 15 to rotate to the side where the guide portion 15a is displaced.

This rotation of the clamp 15 causes the lock portion 15b to move inside the mounting hole 20a around the shaft 16 with a radius that temporarily exceeds the diameter dimension R of the mounting hole 20a by a predetermined length L1 on the side opposite to the rotating side of the clamp 15. The peripheral surface is rubbed and stretched to the inner peripheral surface of the mounting hole 20a. The guide portion 15a contacts the inner peripheral surface of the mounting hole 20a on the rotating side of the clamp 15. Therefore, in the clamp 15, the lock portion 15b and the guide portion 15a are bulged on the inner surfaces of the mounting hole 20a that face each other, so that the hinge device 10 does not come off from the mounting hole 20a.

The hinge device 10 to which the clamp 15 is attached has a radius that once exceeds the diameter dimension R of the attachment hole 20a by a predetermined length L1 due to this bulging of the lock portion 15b and the guide portion 15a with respect to the inner circumference of the attachment hole 20a. Unless a large force for rubbing the lock portion 15b in the opposite direction is applied, the lock portion 15b does not return to the original position and cannot be pulled out from the mounting hole 20a. When the hinge device 10 is to be pulled out from the mounting hole 20a, the lock portion 15b and the guide portion 15a are caught in the inner surfaces of the inner periphery of the mounting hole 20a which face each other, and oppose the force of the pulling out. When the hinge device 10 is to be pulled out from the mounting hole 20a with a larger force, the inner surface of the mounting hole 20a is plastically deformed by the lock part 15b and the guide part 15a being caught in the inner surface of the mounting hole 20a, and the hinge device 10 is mounted. It can be pulled out from the hole 20a.

Therefore, according to the hinge lock mechanism of the present embodiment, it is possible to prevent the hinge device 10 from coming off the mounting hole 20a without using a conventional fixture such as a spring clip. Therefore, it is not necessary to prepare a fixture such as a spring clip separately from the hinge device 10, and it is possible to reduce the management process of managing the fixture such as the spring clip separately from the hinge device 10. In addition, an insertion hole for passing a fixture such as a spring clip through each holder portion of the toilet seat and the toilet lid is unnecessary, and it is possible to reduce the working process of providing the insertion hole in the holder portion. As a result, it is possible to reduce the cost and work load when manufacturing the toilet using the hinge device 10 or when manufacturing the toilet seat/toilet lid.

4A, 4B and 4C are a side view, a bottom view and a front view of a hinge device 30 to which a hinge lock mechanism according to a second embodiment of the present invention is applied. 5A is a vertical cross-sectional view of the shaft portion 14 and the mounting hole 20a before the shaft portion 14 is inserted into the mounting hole 20a in the second embodiment, and FIG. 5B is in the second embodiment. FIG. 5C is an enlarged view of FIG. 5B, showing the shaft section 14 and the mounting hole 20a after inserting the shaft section 14 into the mounting hole 20a. In FIGS. 4 and 5, the same parts as those in FIGS. 1 to 3 are designated by the same reference numerals, and the description thereof will be omitted.

The hinge lock mechanism according to the second embodiment is configured such that two clamps 31 and 32 having the same outer shape are superposed on the front and back sides and are rotatably attached to the shaft portion 14 by the same shaft 16. The clamps 31 and 32 are formed by pressing a metal plate and have the same outer shape as the clamp 15 in the first embodiment, but the thickness thereof is half that of the clamp 15. The shaft 16 is located on the central axis of the shaft portion 14 as in the first embodiment.

Each of the clamps 31 and 32 is formed with a guide portion 31a and a lock portion 31b, and a guide portion 32a and a lock portion 32b, which are similar to the guide portion 15a and the lock portion 15b of the clamp 15. Further, in the guide portions 31a and 32a, similar to the guide portion guide surface 15a1 and the guide portion contact surface 15a2 of the guide portion 15a, the guide portion guide surface 31a1 and the guide portion contact surface 31a2, and the guide portion guide surface 32a1. And a guide portion contact surface 32a2.

According to the hinge lock mechanism according to the second embodiment, when the shaft portion 14 is inserted into the mounting hole 20a, the clamps 31 and 32 on the front and back sides are provided with the inner surface of the mounting hole 20a of the guide portions 31a and 32a. The moments with the contact point of (1) as the action point and the shaft 16 as the fulcrum are applied in opposite directions, and the clamps 31 and 32 rotate in opposite directions due to this moment. Therefore, the lock portions 31b and 32b of the front-side clamp 31 and the back-side clamp 32 are stretched at positions symmetrical to the inner surfaces of the inner periphery of the mounting hole 20a that face each other.

At this time, as shown in FIGS. 5(b) and 5(c), the lock portion 31b of the clamp 31 shown in the table has the diameter R of the mounting hole 20a on the side opposite to the rotating side of the clamp 31. The inner surface of the mounting hole 20a is rubbed around the shaft 16 with a radius that exceeds the predetermined length L2 once, and is stretched to one inner surface of the mounting hole 20a. Further, the lock portion 32b of the clamp 32, which is provided on the back side, has a radius that once exceeds the diameter dimension R of the mounting hole 20a by a predetermined length L2 on the side opposite to the rotating side of the clamp 32, with the mounting hole centered around the shaft 16 in the mounting hole. The other inner surface facing one inner surface of 20a is rubbed and stretched to the inner surface of the mounting hole 20a.

In the present embodiment, the shaft portions 14 are located at the center of the mounting hole 20a in the radial direction due to the protrusions of the lock portions 31b and 32b. Therefore, the predetermined length L2, that is, the amount by which each of the lock portions 31b and 32b surpasses the radial dimension R, the radial dimension R of the mounting hole 20a is φ12.2 mm, while the radial dimension of the mounting hole 20a is both sides. Each is set to 0.15 mm.

Further, the guide portions 31a, 32a of the front-side clamp 31 and the back-side clamp 32 also come into contact with the inner surfaces of the mounting hole 20a facing each other at symmetrical positions. Therefore, in the clamps 31 and 32, the lock portions 31b and 32b and the guide portions 31a and 32a project the inner surfaces of the mounting hole 20a, which are opposed to each other, by applying symmetrical forces in a balanced manner to firmly secure the hinge device 30. The mounting hole 20a does not come off.

Therefore, the hinge lock mechanism according to the second embodiment also provides the same operational effects as the hinge lock mechanism according to the first embodiment.

6(a), (b) and (c) are a side view, a bottom view and a front view of a hinge device 40 to which a hinge lock mechanism according to a third embodiment of the present invention is applied. Further, FIG. 7A is a vertical sectional view of the shaft portion 14 and the mounting hole 20a before the shaft portion 14 is inserted into the mounting hole 20a in the third embodiment, and FIG. 7B is in the third embodiment. FIG. 7C is an enlarged view of FIG. 7B, showing a vertical cross-sectional view of the shaft portion 14 and the mounting hole 20a after inserting the shaft portion 14 into the mounting hole 20a. 6 and 7, the same parts as those in FIGS. 1 to 3 are designated by the same reference numerals and the description thereof will be omitted.

The hinge lock mechanism according to the third embodiment is configured such that two clamps 41 and 42 having the same outer shape are superposed on the front and back sides and are rotatably attached to the shaft portion 14 by the same shaft 16. The shaft 16 is located on the central axis of the shaft portion 14 as in the first embodiment. The clamps 41 and 42 have an outer shape different from that of the clamp 15 in the first embodiment, and both the guide portions 41a and 42a and the lock portions 41b and 42b are formed on their rotating sides. The guide portions 41a and 42a are formed at one corner of the bottom side of the triangular clamps 41 and 42, and the lock portions 41b and 42b are formed at the other corners of the bottom side. These clamps 41 and 42 are also half the thickness of the clamp 15 in the first embodiment, and are formed by pressing a metal plate.

Before each of the clamps 41 and 42 is inserted into the mounting hole 20a of the shaft portion 14, the guide portions 41a and 42a are located in the radial direction of the shaft portion 14 on the rotation side of the clamps 41 and 42 with respect to the shaft 16. It is displaced by X mm. Further, when the shaft portion 14 is inserted into the mounting hole 20a, the lock portions 41b and 42b on the rotating side of the clamps 41 and 42 each have a radius that temporarily exceeds the diameter dimension R of the mounting hole 20a by a predetermined length L2. The inner surface of the mounting hole 20a is rubbed around the shaft 16 and stretched on the inner surface of the mounting hole 20a. Further, the guide portions 41a, 42a abut on the inner surface of the mounting hole 20a.

According to the hinge lock mechanism according to the third embodiment as well as the hinge lock mechanism according to the second embodiment, when the shaft portion 14 is inserted into the mounting hole 20a, the guides are provided on the front and back clamps 41, 42. Moments about the contact point of the portions 41a and 42a with the inner surface of the mounting hole 20a as an action point and the fulcrum about the shaft 16 are applied in opposite directions, and the clamps 41 and 42 rotate in opposite directions due to this moment. Therefore, the lock portions 41b, 42b and the guide portions 41a, 42a of the clamp 41 shown on the front side and the clamp 42 placed on the back side are located symmetrically with respect to the inner surfaces of the clamp holes 41 of the clamp holes 41, 42 facing each other. I will stick with.

However, at this time, as shown in FIGS. 7(b) and 7(c), the lock portion 41b of the clamp 41 shown in the table has a mounting hole on the side opposite to the rotation side of the lock portion 31b of the clamp 31. Unlike the hinge lock mechanism according to the second embodiment that is stretched on the inner surface of 20a, on the rotation side of the clamp 41, the radius R of the mounting hole 20a once exceeds the diameter dimension R by a predetermined length L2, and the mounting hole 20a is centered around the shaft 16a. One of the inner surfaces of the mounting hole 20a is rubbed against one of the inner surfaces of the mounting holes 20a. Also, unlike the hinge lock mechanism according to the second embodiment in which the lock portion 42b of the clamp 42 provided on the back side is protruded to the inner surface of the mounting hole 20a on the side opposite to the rotation side, the lock portion 42b of the clamp 32 differs from the clamp 42. On the rotation side of the mounting hole 20a, the inner diameter of the mounting hole 20a is once exceeded by a predetermined length L2, and the inner surface of the mounting hole 20a opposite to one inner surface of the mounting hole 20a is rubbed about the shaft 16 to move the mounting hole 20a. On the other inner surface of.

Also in the present embodiment, the shaft portions 14 are positioned at the center of the mounting hole 20a in the radial direction, as in the hinge lock mechanism according to the second embodiment, due to the tension of the lock portions 41b, 42b. Therefore, the predetermined length L2, that is, the amount by which each of the lock portions 41b and 42b exceeds the radial dimension R is such that the radial dimension R of the mounting hole 20a is φ12.2 mm, while the radial dimension of the mounting hole 20a is both sides. Each is set to 0.15 mm.

Further, the guide portions 41a, 42a of the front-side clamp 41 and the back-side clamp 42 also come into contact with the opposing inner surfaces of the inner periphery of the mounting hole 20a at symmetrical positions. Therefore, in each of the clamps 41 and 42, the lock portions 41b and 42b and the guide portions 41a and 42a thrust the inner surfaces of the inner periphery of the mounting hole 20a, which are opposed to each other, with symmetrical forces in a well-balanced manner to firmly hold the hinge device 40. It does not come off from the mounting hole 20a.

Therefore, the hinge lock mechanism according to the third embodiment also provides the same operational effects as the hinge lock mechanism according to the first embodiment.

8A, 8B and 8C are a side view, a bottom view and a front view of a hinge device 50 to which a hinge lock mechanism according to a fourth embodiment of the present invention is applied. Further, FIG. 9A is a side view of the clamps 51 and 52 that constitute the hinge lock mechanism according to the fourth embodiment, and FIG. 9B is a front view. 10A is a vertical cross-sectional view of the shaft portion 14 and the mounting hole 20a before the shaft portion 14 is inserted into the mounting hole 20a in the fourth embodiment, and FIG. 10B is in the fourth embodiment. FIG. 10C is an enlarged view of FIG. 10B, showing a vertical cross-sectional view of the shaft portion 14 and the mounting hole 20a after inserting the shaft portion 14 into the mounting hole 20a. 8 and 10, the same parts as those in FIGS. 1 to 3 are designated by the same reference numerals and the description thereof will be omitted.

As shown in FIG. 9, the clamps 51 and 52 used in the hinge lock mechanism according to the fourth embodiment have the same outer shape as the clamps 41 and 42 according to the third embodiment, but around the shaft holes 51c and 52c. The wall thickness in is thin in a fan shape. Further, although the clamps 41 and 42 in the third embodiment are formed by pressing a metal plate, the clamps 51 and 52 in the fourth embodiment are formed by resin molding.

The hinge lock mechanism according to the fourth embodiment has the same structure as the hinge lock mechanism according to the third embodiment except for these, and the guide portions 51a and 52a and the lock portion 51b, on the rotation side of the clamps 51 and 52, are provided. Both 52b are formed. Therefore, the hinge lock mechanism according to the fourth embodiment also performs the same operation as the hinge lock mechanism according to the third embodiment, and has the same effect as the hinge lock mechanism according to the first embodiment.

11A, 11B, and 11C are a side view, a bottom view, and a front view of the hinge device 60 to which the hinge lock mechanism according to the fifth embodiment of the present invention is applied. 12A is a front view of the clamp 61 that constitutes the hinge lock mechanism according to the fifth embodiment, and FIG. 12B is a side view thereof. 13A is a vertical cross-sectional view of the link 62 that constitutes the hinge lock mechanism according to the fifth embodiment, and FIG. 13B is a side view. Further, FIG. 14A is a vertical sectional view of the shaft portion 14 and the mounting hole 20a before the shaft portion 14 is inserted into the mounting hole 20a in the fifth embodiment, and FIG. 14B is in the fifth embodiment. It is a longitudinal cross-sectional view of the shaft portion 14 and the mounting hole 20a after inserting the shaft portion 14 into the mounting hole 20a. 11 and 14, the same parts as those in FIGS. 1 to 3 are designated by the same reference numerals and the description thereof will be omitted.

In the hinge lock mechanism according to the fifth embodiment, the clamp 61 is rotatably attached to the tip end 14a side of the shaft portion 14 via the link 62, and the shaft rotatably connects one end of the link 62 to the shaft portion 14. A first shaft 63 that supports the second shaft 64 and a second shaft 64 that rotatably supports the other end of the link 62 on the clamp 61 are configured.

As shown in FIG. 12, the clamp 61 is resin-molded into a substantially rectangular parallelepiped shape, and the wall thickness of the portion around the shaft hole 61c into which the first shaft 63 is inserted is thin. The right end surface of the shaft hole 61c in the drawing constitutes a guide portion 61a, and the lower end surface of the shaft hole 61c in the drawing constitutes a lock portion 61b. As shown in FIG. 13, the link 62 has a shaft hole 62a formed on one end side with a single hole into which the first shaft 63 is inserted and a bifurcated shaft hole 62b formed on the other end side. The second shaft 64 is inserted. The portion of the clamp 61 where the shaft hole 61c is formed is fitted to the other end of the bifurcated link 62, the shaft hole 61c is aligned with the shaft hole 62b, and the second shaft 64 is inserted. 61 and the link 62 are rotatably connected.

Before the second shaft 64 is inserted into the mounting hole 20a of the shaft portion 14, as shown in FIG. 14A, the second shaft 64 is attached to the shaft portion 14 of the first shaft 63 in the radial direction of the shaft portion 14. It is closer to one end of the shaft portion 14 than the mounting position. Further, in the axial direction of the shaft portion 14, the guide portion 61 a is located closer to the tip 14 a side of the shaft portion 14 than the attachment position of the first shaft 63 to the shaft portion 14, and the guide portion 61 a is projected from the tip 14 a of the shaft portion 14. ing.

When the second shaft 64 is inserted into the attachment hole 20a of the shaft portion 14, the clamp 61 rotates until the positioning wall 14b of the shaft portion 14 contacts the clamp 61 as shown in FIG. 14B. Thus, it rotates about the first shaft 63. Further, in the axial direction of the shaft portion 14, the second shaft 64 is located on the side farther from the tip 14a of the shaft portion 14 than the mounting position of the first shaft 63 on the shaft portion 14, and the lock portion 61b is disposed. The inner surface of the mounting hole 20a is stretched.

Further, the hinge lock mechanism according to the fifth embodiment includes the third shaft 65 that engages with the protrusion 62c of the link 62 (see FIG. 13B) and prevents the link 62 from rotating in the opposite direction. Provided as a stopper. Both ends of the third shaft 65 are fixed to the shaft portion 14 and are exposed in a bifurcated gap portion of the shaft portion 14. In the present embodiment, each of the first, second and third shafts 63, 64 and 65 is composed of a spring pin as in the first embodiment.

According to the hinge lock mechanism of the fifth embodiment, when the shaft portion 14 is inserted into the mounting hole 20a, the guide portion 61a protruding from the tip 14a of the shaft portion 14 abuts on the bottom surface of the mounting hole 20a, so that the clamp The reference numeral 61 rotates in a direction of reducing the distance that the guide portion 61a projects from the tip 14a of the shaft portion 14. By this rotation of the clamp 61, a force for rotating the link 62 about the first shaft 63 acts on the second shaft 64 via the clamp 61. When the second shaft 64 rotates about the first shaft 63 with the length of the link 62 as a radius, the lock portion 61b of the clamp 61 rotates. When the link 62 pivots about the first shaft 63 and the straight line connecting the first shaft 63 and the second shaft 64 becomes perpendicular to the central axis of the shaft portion 14, the lock portion 61b becomes the diameter of the mounting hole 20a. The dimension R is exceeded by a predetermined length L1.

At this position of the lock portion 61b, the force with which the lock portion 61b is stretched on the inner surface of the mounting hole 20a is maximized. After that, the clamp 61 further rotates until the tip 14a of the shaft portion 14 comes into contact with the bottom surface of the mounting hole 20a, and the clamp 61 comes into contact with the positioning wall 14b of the shaft portion 14, whereby the second shaft 64 becomes In the axial direction of the shaft portion 14, the lock portion 61b is bulged to the inner surface of the mounting hole 20a at a position farther from the tip 14a of the shaft portion 14 than the mounting position of the first shaft 63 on the shaft portion 14. In the present embodiment, due to this bulging of the lock portion 61b, the shaft portion 14 is positioned so as to be biased to one side in the radial direction of the mounting hole 20a. Therefore, the predetermined length L1, that is, the amount by which the lock portion 61b exceeds the radial dimension R is 0.3 mm on one side in the radial direction of the mounting hole 20a, while the radial dimension R of the mounting hole 20a is φ12.2 mm. Is set to.

The hinge device 60 to which the clamp 61 is attached moves the lock portion 61b in the opposite direction within the range in which the diameter dimension R of the attachment hole 20a once exceeds the diameter dimension R by the predetermined length L1 due to this tension of the lock portion 61b with respect to the inner circumference of the attachment hole 20a. Unless a large force is applied, the lock portion 61b does not return to the original position and cannot come out of the mounting hole 20a. Therefore, also in the hinge lock mechanism according to the fifth embodiment, the same operational effects as those of the hinge lock mechanism according to the first embodiment are exhibited.

According to the hinge lock mechanism of the fifth embodiment, the third shaft 65 prevents the link 62 from rotating in the reverse direction, so that the clamp 61 does not rotate in the reverse direction. Therefore, when the shaft portion 14 is inserted into the mounting hole 20a, the operator does not need to intentionally hold the clamp 61 at a proper initial position where the clamp 61 does not rotate in the reverse direction. Therefore, the hinge device 60 is easily handled when the shaft portion 14 is inserted into the mounting hole 20a, and the assembling workability of the hinge device 60 is improved.

In the hinge lock mechanism according to the fifth embodiment, the clamp 61 is prevented from rotating in the reverse direction by using the third shaft 65 as a stopper to prevent the link 62 from rotating in the reverse direction. However, by providing the shaft portion 14 with a stopper that engages with the clamp 61 itself, it may be possible to directly prevent the clamp 61 from rotating in the reverse direction.

Further, in the above-described first to fourth embodiments, the formation position of the shaft hole through which the shaft 16 of each of the clamps 15, 31, 41 and 51 passes is moved along the central axis of the shaft portion 14 to lock. It is possible to adjust the length of the portions 15b, 31b, 41b and 51b that exceed the radial dimension R of the mounting hole 20a.

Further, in the above-described first to fifth embodiments, the lock portions 15b, 31b, 41b, 51b and 61b of the clamps 15, 31, 41, 51 and 61 have a rectangular cross section, and the mounting hole 20a is provided. The place where it abuts against the inner surface of and is stretched is square. For this reason, the hinge devices 10, 30, 40, 50 and 60 are pulled out from the mounting hole 20a by making the cross-sectional shape of the portion that abuts against the inner surface of the mounting hole 20a and stretches so as to have an arc shape along the inner circumference of the mounting hole 20a. At this time, it is possible to prevent the inner surface of the mounting hole 20a from being plastically deformed and damaged at the corners of the lock portions 15b, 31b, 41b, 51b and 61b.

In the above-described embodiment, the case where the hinge lock mechanism according to the present invention is applied to the hinge device of a Western-style toilet has been described. However, the hinge lock mechanism according to the present invention is not limited to the hinge device of a western-style toilet, but can be similarly applied to other hinge devices that support objects to be opened and closed freely, and is similar to the above-described embodiments. The effect is produced.

10, 30, 40, 50, 60... Hinge device, 11... Attachment/detachment portion, 11a... Attachment/detachment hole, 12... Rotary damper portion, 13... Case, 14... Shaft portion, 14a... Tip, 14b... Positioning wall, 15, 31 , 32, 41, 42, 51, 52, 61... Clamp, 15a, 31a, 32a, 41a, 42a, 51a, 52a, 61a... Guide part, 15b, 31b, 32b, 41b, 42b, 51b, 52b, 61b... Lock portion, 16... Shaft, 20... Holder portion, 20a... Mounting hole, 62... Link, 62c... Projection portion, 63... First shaft, 64... Second shaft, 65... Third shaft (stopper), R...diameter of mounting hole 20a, L1, L2...predetermined length

Claims (6)

In a hinge lock mechanism that prevents a hinge device that supports open/close between objects from coming off from a mounting hole formed in one object,
A clamp is rotatably attached by a shaft to a tip end side of a shaft portion of the hinge device inserted into the attachment hole,
The clamp has a guide portion that rotates the clamp by protruding from the tip of the shaft portion and contacting the inner surface of the mounting hole when the shaft portion is inserted into the mounting hole; A hinge lock mechanism, comprising: a lock portion that rubs the inner surface of the mounting hole and pushes against the inner surface of the mounting hole within a range in which the diameter dimension of the mounting hole exceeds a predetermined length. In the clamp, in the radial direction of the shaft portion, before the insertion of the shaft portion into the mounting hole, the guide portion is positioned offset from the shaft on the rotation side of the clamp, At the time of insertion into the mounting hole, on the side opposite to the rotation side of the clamp, the lock portion rubs the inner surface of the mounting hole around the shaft with a radius that temporarily exceeds the diameter dimension of the mounting hole by a predetermined length. The hinge lock mechanism according to claim 1, wherein the hinge lock mechanism is stretched on the inner surface of the mounting hole, and the guide portion abuts on the inner surface of the mounting hole on the rotation side of the clamp. The shaft is located on the central axis of the shaft part, and the clamps are of the same outer shape, and a plurality of the clamps are stacked on the front side and the back side and are rotatably attached to the shaft part by the same shaft. The hinge lock mechanism according to claim 2. The shaft is located on the central axis of the shaft part, and the clamps have a plurality of outer shapes having the same outer shape and are rotatably attached to the shaft part by the same shaft.
In each of the clamps, in the radial direction of the shaft portion, the guide portion is positioned offset from the shaft on the rotation side of the clamp before insertion into the mounting hole of the shaft portion, At the time of insertion into the mounting hole, the locking portion rubs the inner surface of the mounting hole around the shaft with a radius that temporarily exceeds the diameter dimension of the mounting hole by a predetermined length on the rotating side of the clamp. The hinge lock mechanism according to claim 1, wherein the guide portion abuts on an inner surface of the mounting hole while being stretched on an inner surface of the hinge hole. The clamp is rotatably attached to the tip side of the shaft portion via a link,
The shaft includes a first shaft that rotatably supports one end of the link on the shaft portion, and a second shaft that rotatably supports the other end of the link on the clamp.
Before the second shaft is inserted into the mounting hole of the shaft part, one of the shaft parts is positioned in the radial direction of the shaft part more than the mounting position of the first shaft to the shaft part. In the axial direction of the shaft portion, the guide portion is located closer to the tip end side of the shaft portion than the attachment position of the first shaft to the shaft portion, and the guide portion is projected from the tip end of the shaft portion. When the shaft portion is inserted into the mounting hole, the clamp is rotated to rotate about the first axis until the clamp comes into contact with the positioning wall of the shaft portion. In the direction, the lock portion is located on the side farther from the tip of the shaft portion than the attachment position of the first shaft to the shaft portion, and the lock portion is stretched on the inner surface of the attachment hole. The hinge lock mechanism described in 1. The hinge lock mechanism according to claim 5, further comprising a stopper that engages with the link or the clamp and prevents the link or the clamp from rotating in a reverse direction.

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