WO2007099739A1

WO2007099739A1 - Fastening device and western-style flush toilet

Info

Publication number: WO2007099739A1
Application number: PCT/JP2007/051972
Authority: WO
Inventors: Masato Takeda; Hiroyasu Fukaya; Hirofumi Yano; Akiya Oohira; Naoko Nawatani; Kei Kohayakawa; Kumi Itou; Hiroyuki Murata; Takafumi Tanimoto
Original assignee: Inax Corporation
Priority date: 2006-03-03
Filing date: 2007-02-06
Publication date: 2007-09-07
Also published as: JP2007232156A

Abstract

A fastening device that is adaptable to installation holes, such as toilet seat installation holes in Western-style toilet bowls, having greatly varying installation depths and is capable of applying reliable fastening force. The fastening device (1) has a head section (11); a male screw section (10) constructed from a hollow cylindrical section (12) and a screw section (13); a female screw section (20) screwed to the screw section (13); a washer (30) placed in the hollow cylindrical section (12) and functioning as a non-rotatable section not rotating even if the head section (11) is rotated from above at the time of fastening; at least one length adjustment bush (40) provided not to be rotatable relative to the washer (30) and formed in an axially extending tubular shape; and a rubber bush (50) for fixation, which is restricted by the length adjusting bush (40) to move upward, which is provided not to be rotatable relative to the bush (40), which is formed in an axially extending tube shape, which has a diameter expanding section (51) that is formed in the middle of the rubber bush and whose diameter is expanded by reducing the axial length, and which is provided not to be rotatable relative to the female screw (20).

Description

Specification

Fastening device and western style flush toilet

Technical field

[0001] The present invention relates to a fastening device and a Western-style flush toilet.

Background art

[0002] Patent Document 1 discloses a conventional fastening device. The fastening device is formed in a cylindrical shape extending in the axial direction, a male screw including a head portion, a cylindrical portion and a screw portion, a female screw screwed into the screw portion, a non-rotatable portion inserted into the cylindrical portion, A rubber fixing bush having an enlarged diameter portion which is enlarged by shortening the axial length is provided.

[0003] The non-rotatable portion is a flange-shaped part integrally formed on one end side of the fixing bush, and is not rotatable relative to the fixing bush. In addition, the flange surface, which is the surface on the head side in the non-rotatable part, is subjected to uneven processing so that it does not rotate even if the head is rotated from above during fastening. The female screw is embedded on the other end side of the fixing bush and cannot rotate relative to the fixing bush.

[0004] A conventional fastening device having such a configuration is used, for example, in a Western-style flush toilet equipped with a Western-style toilet body and a toilet seat device, and fixes the toilet seat device to a toilet seat mounting hole of the Western-style toilet body.

[0005] Specifically, after the bottom wall of the toilet seat device is sandwiched between the head of the male screw and the flange surface of the non-rotatable portion, the cylindrical portion and the screw portion of the male screw, the female screw, and the fixing bush Is inserted into the toilet seat mounting hole on the Western-style toilet body. Here, if the threaded part and the fixing bushing are selected with an appropriate length, the diameter-enlarged part of the fixing bushing protrudes moderately from the opposite side of the toilet seat mounting hole. To do.

[0006] Then, when the head of the male screw is rotated, the rotation of the female screw that is screwed into the screw part is restricted by the non-rotatable part and the fixing bush, and rotates relative to the screw part. Move to the head side. As a result, the axial length of the fixing bush is shortened, and the enlarged diameter portion is expanded by compression deformation and engaged with the opposite side of the toilet seat mounting hole.

[0007] Thus, this fastening device secures the toilet seat device to the toilet seat mounting hole of the Western-style toilet body from above. Can be determined.

[0008] Patent Document 1: Japanese Utility Model Publication No. 62-21996

Disclosure of the invention

Problems to be solved by the invention

[0009] However, in the conventional fastening device described above, the mounting holes such as various toilet seat mounting holes with different depths are provided.

If one type is to be used, if the mounting hole depth is too deep, the expanded diameter portion will not protrude to the opposite side of the mounting hole, and the expanded diameter portion will expand within the mounting hole. Just do the bow I on the other side of the mounting hole.

[0010] On the other hand, if the depth of the mounting hole is too shallow, the expanded diameter portion will protrude too far from the opposite side of the mounting hole, and the expanded diameter portion will expand at a position further away from the opposite side of the mounting hole. As a result, a gap is created between the opposite side of the mounting hole.

[0011] For this reason, in the conventional fastening device, if a length suitable for the depth of the mounting hole is not selected and used, a reliable fixing force cannot be exerted.

[0012] When a fastening device is used in a Western style flush toilet that does not exhibit a reliable fixing force in this way

If the weight of the user is improperly added to the toilet seat device from above, there is a possibility that the toilet seat device may be out of force or disengaged from the Western-style toilet body.

[0013] From the above, the conventional fastening device has to be prepared with many types having different lengths, which makes it difficult to reduce the product cost.

[0014] The present invention has been made in view of the above-described conventional situation, and can be applied to a case in which the depth of a mounting hole such as a toilet seat mounting hole of a Western-style toilet body is greatly different, and reliably. It is an issue to be solved to provide a fastening device that can exert a sufficient fixing force.

Means for solving the problem

[0015] The fastening device of the present invention includes a male screw including a head, a cylindrical portion, and a screw portion;

An internal thread screwed into the threaded portion;

A non-rotatable portion that is inserted through the cylindrical portion and does not rotate even when the head is rotated from above during fastening;

A small number of cylinders that are provided so as not to rotate relative to the non-rotatable portion and extend in the axial direction. At least one length adjustment bush,

The length adjustment bush restricts upward movement and is provided so as not to rotate relative to the length adjustment bush, and is formed in a cylindrical shape extending in the axial direction. And a rubber fixing bush provided so as not to rotate relative to the female screw.

[0016] The fastening device of the present invention having such a configuration is used, for example, in a Western-style flush toilet equipped with a Western-style toilet body and a toilet seat device, and the toilet seat device is fixed to a toilet seat mounting hole of the Western-style toilet body. .

[0017] Specifically, with the male screw head holding the toilet seat device in an upper force state, the non-rotatable portion is in contact with the toilet seat device or the Western-style toilet body, and the male screw cylindrical portion and screw portion Insert the female screw, the length adjustment bush, and the fixing bush into the toilet seat mounting hole of the Western-style toilet body. Here, it is assumed that the threaded portion is sufficiently long enough and an appropriate length adjustment bushing is interposed between the non-rotatable portion and the fixing bushing to expand the fixing bushing. A diameter part will be in the state which protruded moderately from the opposite side of the toilet seat attachment hole. At this time, for example, a plurality of length adjusting bushes may be used by cutting a plurality of bushes into an appropriate length by connecting a plurality of them in series.

[0018] Then, when the head of the male screw is rotated, the rotation of the female screw screwed into the screw part is restricted by the non-rotatable part, the length adjusting bush and the fixing bush, and rotates relative to the screw part. And move to the head side of the screw part. As a result, the axial length of the fixing bush is shortened, and the enlarged diameter portion is enlarged by compression deformation and engaged with the opposite side of the toilet seat mounting hole.

[0019] Thus, the fastening device can securely fix the toilet seat device to the toilet seat mounting hole of the Western-style toilet body.

[0020] As described above, the fastening device of the present invention can be obtained by adjusting the length of the length-adjusting bush appropriately without preparing many types of different lengths. The force on the opposite side of the mounting hole such as the toilet seat mounting hole can also be made to protrude moderately. For this reason, this fastening device can prevent the problem that the enlarged diameter portion has no hooking force on the opposite side of the mounting hole. In addition, this fastening device can also prevent a problem that a gap is generated between the enlarged diameter portion and the opposite side of the mounting hole. [0021] Therefore, the fastening device of the present invention can be applied to a case in which the depth of the mounting hole such as the toilet seat mounting hole of the Western-style toilet body is greatly different, and can exhibit a reliable fixing force. .

[0022] Then, when the fastening device capable of exerting a certain fixing force as described above is used in a Western-style flush toilet, the weight of the user is inappropriately applied to the toilet seat device with an upward force. Even in such a case, it is possible to prevent a problem that the toilet seat device is displaced from or detached from the Western-style toilet body.

In the present invention, the non-rotatable portion, the length adjusting bush, and the fixing bush may be any as long as the effects of the present invention are exhibited. For example, the non-rotatable portion may be a bush that is separate from the length adjusting bush. In this case, irregularities or the like are formed between the non-rotatable portion and the length adjusting bush so as to rub against each other and make relative rotation impossible. The non-rotatable part and the length adjusting bush may be integrated. In this case, there is no need for irregularities or the like that rub against each other and cannot be rotated relative to each other. Further, the length adjusting bush may be, for example, one that can be elongated in series, or one that can be used by cutting a long one into an appropriate length. .

In the fastening device of the present invention, the non-rotatable portion may be a separate shutter from the length adjusting bush. In this case, the non-rotatable portion has a simple disk shape or a flat plate shape, and the length adjusting bush can also have a simple cylindrical shape, so that the manufacturing cost can be reduced.

[0025] In the fastening device of the present invention, an anti-rotation means for preventing self rotation can be formed on the lower surface of the washer. In this case, the non-rotatable portion can be easily made non-rotatable by bringing the washer as the non-rotatable portion into contact with a fastening object such as a toilet seat device or a Western-style toilet body.

[0026] As the rotation preventing means, any means may be used as long as it can prevent the rotation of the washer, such as uneven rows and protrusions! /.

In the fastening device of the present invention, the female screw and the fixing bush may be integrated, for example, the female bushing force S insert molding may be performed on the fixing bush. In the fastening device of the present invention, the female screw and the fixing bush may be separated. In this case, female thread The fixing bush separated from can be used as a length adjusting bush. The fastening device further includes a fixing bush having at least one female screw separated between the non-rotatable portion and the fixing bush to which the female screw is fixed. The effect of this can be achieved. In this case, since the fixing bush from which the female screw is separated also serves as the length adjusting bush, the manufacturing cost can be further reduced.

[0028] In the fastening device of the present invention, when the length adjusting bush and the fixing bush are separate, a plurality of length adjusting bushes can be elongated in series.

[0029] In the fastening device of the present invention, the length adjusting bush and the fixing bush may be integrated and separable. In this case, it is possible to use the length adjusting bush and the fixing bush with appropriate lengths by separating the excess part of the length adjusting bush so that it cannot rotate relative to the non-rotatable part. it can.

[0030] In the fastening device of the present invention, the length-adjusting bush may be formed with an enlarged diameter portion that expands in the middle by shortening the axial length. In this case, the length adjusting bush is also enlarged in the mounting hole at the time of fastening, so that a more secure fixing force can be exhibited.

[0031] The Western-style flush toilet of the present invention includes a Western-style toilet body having a toilet seat mounting hole and a toilet seat mounted on the Western-style toilet body and fixed to the toilet seat mounting hole using the fastening device of the present invention. It is characterized in that the equipment is removed.

[0032] This Western-style flush toilet is used when the user's weight is improperly applied to the toilet seat device by using the fastening device of the present invention that exhibits a reliable fixing force as described above. Even in such a case, it is possible to prevent a problem that the toilet seat device is displaced from or detached from the Western-style toilet body.

Brief Description of Drawings

FIG. 1 is a cross-sectional view of a fastening device according to a first embodiment.

FIG. 2 is a cross-sectional view of a washer according to the fastening device of Embodiment 1.

FIG. 3 is a diagram showing the washer also viewed in the direction A in FIG. 2 in the fastening device of Example 1.

FIG. 4 is a cross-sectional view of a length adjusting bush according to the fastening device of Embodiment 1.

FIG. 5 is a diagram showing the length adjusting bush viewed from the direction B in FIG. is there.

[Fig. 6] Fig. 6 is a diagram showing the length adjusting bush of the fastening device of Example 1 and also viewing the C direction force of Fig. 4. [Fig.

FIG. 7 is a cross-sectional view of a fixing bush according to the fastening device of Embodiment 1.

FIG. 8 is a cross-sectional view showing the state before the toilet seat device is fixed to the toilet seat mounting hole of the Western-style toilet body, according to the fastening device of Example 1.

FIG. 9 is a cross-sectional view showing a state after the toilet seat device is fixed to the toilet seat mounting hole of the western-style toilet body in the fastening device of Example 1.

FIG. 10 is a cross-sectional view showing the state before the toilet seat device is fixed to the toilet seat mounting hole of the western-style toilet body, according to the fastening device of the first embodiment.

FIG. 11 is a cross-sectional view showing the state after the toilet seat device is fixed to the toilet seat mounting hole of the western-style toilet body, according to the fastening device of Example 1.

FIG. 12 is a cross-sectional view showing a state before the toilet seat device is fixed to the toilet seat mounting hole of the western-style toilet body in the fastening device of Example 2.

FIG. 13 is a cross-sectional view of a fixing bush according to the fastening device of Embodiment 2.

FIG. 14 is a cross-sectional view of a female screw and a female screw holding member according to the fastening device of Example 2.

FIG. 15 is a cross-sectional view showing a state after the toilet seat device is fixed to the toilet seat mounting hole of the Western-style toilet body in the fastening device of Example 2.

FIG. 16 is a cross-sectional view showing the state before the toilet seat device is fixed to the toilet seat mounting hole of the Western-style toilet body in the fastening device of Example 2.

FIG. 17 is a cross-sectional view showing a state before the toilet seat device is fixed to the toilet seat mounting hole of the Western-style toilet body in the fastening device of Example 3.

FIG. 18 relates to the fastening device of Embodiment 3, wherein (a) is a cross-sectional view before adjusting the length of the fixing bush, and (b) is a cross-sectional view after adjusting the length of the fixing bush.

Explanation of symbols

1, 2, 3 ... Fastening device

7… Toilet seat mounting hole

8 ... Western style toilet body 9 ... Toilet seat device

10 ... Male thread

11 ... Head

12 ... Cylindrical part

13 Thread part

20, 20a ... Female thread

23a ... Female thread side recess

30: Non-rotatable part (washer)

32

34 · · · Anti-rotation means (hook-like projections)

40… Length adjustment bush

42 ··· Bush side convex part for length adjustment

43 ··· Bush side recess for length adjustment

51… Expanded part

50, 50a, 50b ... Bushing for fixing

52a- · · · Bushing convex part for fixing

53, 53b ... Recessed bush side recess

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, Embodiments 1 to 3 embodying the present invention will be described with reference to the drawings.

Example 1

As shown in FIG. 1, the fastening device 1 of Example 1 includes a male screw 10, a female screw 20, a busher 30 as a non-rotatable part, a length adjusting bush 40, and a fixing bush 50. I have.

[0037] The male screw 10 includes a head portion 11, a cylindrical portion 12, and a screw portion 13. The female screw 20 is screwed into the screw portion 13 while being fixed to the lower surface side of a fixing bush 50 described later. Yes. As shown in FIGS. 2 and 3, the bushing 30 is a rectangular flat-plate resin molded product having a hole 31 through which the cylindrical portion 12 of the male screw 10 is inserted in the center. On the lower surface side of the washer 30, a square columnar washer-side convex portion 32 is provided so as to protrude downward with the hole 31 positioned at the center.畝 Around the four side surfaces of the washer-side convex part 32, there are hook-like protrusions 34 as a means to prevent rotation. It is arranged so as to protrude downward.

As shown in FIG. 1, the washer 30 having such a shape is passed through the cylindrical portion 12 of the male screw 10 and positioned below the head 11 of the male screw 10. When the hook-shaped protrusion 34 abuts against the fastening target, the washer 30 is made unrotatable with respect to the fastening target. As a result, even if the head 11 of the male screw 10 is rotated from above at the time of fastening, the washer 30 Does not rotate.

[0039] As shown in Figs. 4 to 6, the length adjusting bush 40 is a resin molded product formed in a cylindrical shape extending in the axial direction. On the upper surface side of the length adjusting bush 40, as shown in FIGS. 4 and 5, a rectangular columnar length adjusting bush side concave portion 43 protruding downward is provided. The length adjusting bush side concave portion 43 and the washer side convex portion 32 are formed to fit with each other, and the length adjusting bush 40 and the washer 30 cannot be rotated relative to each other by fitting with each other. Is done. On the other hand, as shown in FIGS. 4 and 6, a rectangular columnar length adjusting bush side convex portion 42 protruding downward is provided on the lower surface side of the length adjusting bush 40. The outer shape of the length-adjusting bush-side convex portion 42 is the same as the outer shape of the washer-side convex portion 32.

As shown in FIG. 1, at least one of the length adjusting bushes 40 having such a shape is passed through the threaded portion 13 and the cylindrical portion 12 of the male screw 10 and positioned below the busher 30. . When a plurality of length adjustment bushes 40 are inserted vertically, the length adjustment bush side convex portion 42 on the lower surface side of the length adjustment bush 40 located on the upper side and the lower side When the length adjustment bushing 40 on the upper surface side of the length adjustment bushing 40 located at is fitted to each other in a V-shaped manner, a plurality of length adjustment bushings 40 arranged in the vertical direction rotate relative to each other. Impossible.

[0041] As shown in FIG. 7, the fixing bush 50 is formed of a rubber that is formed in a cylindrical shape extending in the axial direction, and in which a lantern-shaped enlarged diameter portion 51 that is enlarged by shortening the axial length is formed in the middle. It is. On the upper surface side of the fixing bush 50, there is formed a rectangular columnar fixing bush side recess 53 having the same shape as the length adjusting bush side recess 43 shown in FIG. On the other hand, the female screw 20 is fixed to the lower surface side of the fixing bush 50 by insert molding, and the fixing bush 50 is not rotatable relative to the female screw 20. As shown in FIG. 1, the fixing bush 50 having such a shape is threaded through the threaded portion 13 of the male screw 10 and is positioned below the length adjusting bush 40 to adjust the length. The upward movement is restricted by the bush 40. Then, the length adjusting bush side convex portion 42 on the lower surface side of the length adjusting bush 40 positioned on the upper side and the fixing bush side concave portion 53 on the upper surface side of the fixing bush 50 positioned on the lower side are mutually connected. By fitting, the fixing bush 50 cannot be rotated relative to the length adjusting bush 40. As a result, the washer 30, the length adjusting bush 40, the fixing bush 50, and the female screw 20 cannot be rotated relative to each other.

[0043] The fastening device 1 of Example 1 having such a configuration is used in a Western-style flush toilet comprising a Western-style toilet body 8 and a toilet seat device 9 as shown in FIG. Fix 9 in the toilet seat mounting hole 7 of the Western-style toilet body 8.

[0044] Specifically, from above the bottom wall 9a of the toilet seat device 9 placed on the Western-style toilet main body 8, the cylindrical portion 12 and the screw portion 13 of the male screw 10, the female screw 20, and the length adjustment Insert the bush 40 and the fixing bush 50 into the toilet seat mounting hole 7 of the Western-style toilet body 8. Then, the lower surface of the washer 30 is brought into contact with the upper surface of the bottom wall 9a of the toilet seat device 9, and the hook-shaped projection 34 is fitted into the recess 9b formed on the bottom wall 9a, so that the washer 30 is It is impossible to rotate relative to the bottom wall 9a.

[0045] Here, as the male screw 10, a sufficiently long screw portion 13 is prepared in advance, and the number of the length adjusting bushes 40 is appropriately selected on the spot, whereby the fixing bush 50 It is possible to easily carry out the state in which the diameter-enlarged portion 51 of the other side of the toilet seat mounting hole 7 protrudes moderately.

[0046] When the head 11 of the male screw 10 is rotated, the female screw 20 screwed into the screw portion 13 is configured so that the busher 30, the length adjusting bush 40, and the fixing bush 50 are not rotatable relative to each other. Therefore, the rotation is restricted, the rotation is relative to the screw portion 13, and the screw portion 13 moves to the head 11 side. As a result, as shown in FIG. 9, the axial length of the fixing bush 50 is shortened, and the lantern-shaped enlarged diameter portion 51 is enlarged by compression deformation and engaged with the opposite side of the toilet seat mounting hole 7. Thus, the fastening device 1 can fix the toilet seat device 9 upwardly in the toilet seat mounting hole 7 of the Western-style toilet body 8. [0047] Further, when the toilet seat mounting hole 7 of the Western-style toilet body 8 is shallow, the fastening device 1 is provided with an enlarged diameter portion of the fixing bush 50 by omitting the length adjusting bush 40 as shown in FIG. 51 can be easily put into a state where the force on the opposite side of the toilet seat mounting hole 7 protrudes moderately.

[0048] In this case, the length adjusting bush side concave portion 43 of the length adjusting bush 40 and the fixing bush side concave portion 53 of the fixing bush 50 have the same shape. And the fixing bush side recess 53 of the fixing bush 50 is fitted to each other, so that the fixing bush 50 cannot be rotated relative to the washer 30. As a result, the washer 30, the fixing bush 50, and the female screw 20 cannot be rotated relative to each other. For this reason, as shown in FIG. 11, in the fastening device 1, the enlarged diameter portion 51 is enlarged by the rotation of the head portion 11 of the male screw 10 and is engaged with the opposite side of the toilet seat mounting hole 7. In this way, the fastening device 1 can exhibit a reliable fixing force even when the toilet seat mounting hole 7 is shallow.

Here, the fastening device 1 of the first embodiment is inserted into the male screw 10 including the head portion 11, the cylindrical portion 12, and the screw portion 13, the female screw 20 screwed into the screw portion 13, and the cylindrical portion 12. A washer 30 as a non-rotatable portion that does not rotate even if the head 11 is rotated from above at the time of fastening, and at least one length formed in a cylindrical shape that is provided so as not to rotate relative to the washer 30 and extends in the axial direction. The adjustment bush 40 and the length adjustment bush 40 restrict upward movement, and the length adjustment bush 40 is provided so as not to rotate relative to the length adjustment bush 40, and is formed in a cylindrical shape extending in the axial direction. A diameter-expanded portion 51 that is enlarged by shortening the length is formed, and a female screw 20 and a rubber fixing bush 50 provided so as not to rotate relative to each other are provided.

[0050] For this reason, the fastening device 1 can be prepared by selecting the number of the length adjusting bushes 40 and adjusting the length appropriately without preparing many types of different lengths. Thus, it is possible to easily carry out the state in which the enlarged-diameter portion 51 protrudes moderately on the opposite side force of the toilet seat mounting hole 7. For this reason, this fastening device 1 can prevent the problem that the enlarged diameter portion 51 has no hooking force on the opposite side of the toilet seat mounting hole 7. Further, this fastening device 1 can also prevent a problem that a gap is generated between the enlarged diameter portion 51 and the opposite side of the toilet seat mounting hole 7.

[0051] Therefore, the fastening device 1 according to the first embodiment can be applied to a case where the depth of the mounting hole such as the toilet seat mounting hole of the western-style toilet body is greatly different, and exhibits a certain fixing force. It is done. [0052] Further, the fastening device 1 does not have to be prepared with many types having different lengths.

The manufacturing cost can be reduced.

[0053] Then, by using the fastening device 1 capable of exhibiting a reliable fixing force in such a Western-style flush toilet, the weight of the user is inappropriately applied to the toilet seat device 9 with an upward force. Even when the toilet seat device 9 is not properly connected, it is possible to prevent a problem that the toilet seat device 9 is displaced from or detached from the Western-style toilet body 8.

Further, in this fastening device 1, the non-rotatable portion is a washer 30 that is separate from the length adjusting bush 40. The washer 30 has a simple flat plate shape and is a length adjusting bush.

Since 40 has a simple cylindrical shape, the fastening device 1 can further reduce the manufacturing cost.

[0055] Further, in the fastening device 1, a hook-shaped protrusion 34 is formed on the lower surface of the washer 30 as a rotation preventing means for preventing its own rotation. For this reason, the fastening device 1 can make the washer 30 non-rotatable easily by bringing the washer 30 into contact with the toilet seat device 9.

[0056] Further, in this fastening device 1, since the length adjusting bush 40 and the fixing bush 50 are separate, a plurality of the length adjusting bushes 40 can be elongated in series. It is easy to adjust the length.

Example 2

As shown in FIG. 12, in the fastening device 2 of the second embodiment, the fixing bush 50a also serves as the length adjusting bush, and the female screw 20a and the fixing bush 50a are separated. Is different from the fastening device 1 of Example 1. Other configurations are the same as those of the fastening device 1 of the first embodiment, and thus the description thereof is omitted.

In the fixing bush 50 of Example 1, the female screw 20 is insert-molded on the lower surface side, whereas in the fixing bush 50a, the female screw 20a is separated as shown in FIG. A fixing bush-side convex portion 52a is newly provided on the side. The fixing bush side convex portion 52a has the same shape as the outer shape of the washer side convex portion 32, and has a quadrangular prism shape protruding downward. The other configurations are the same as those of the fixing bush 50 of the first embodiment, and thus the description thereof is omitted. As shown in FIG. 12, at least one of the fixing bushes 50 a having such a shape is passed through the threaded portion 13 and the cylindrical portion 12 of the male screw 10 and is positioned below the busher 30. When a plurality of fixing bushes 50a are inserted vertically, the fixing bush side convex portion 52a on the lower surface side of the fixing bush 50a positioned on the upper side and the lower side are located. When the fixing bush side recess 53a on the upper surface side of the fixing bush 50a is fitted to each other, the plurality of fixing bushes 50a arranged in the vertical direction cannot be rotated relative to each other.

[0060] As shown in FIG. 14, the female screw 20a is insert-molded into a female screw holding member 25a made of resin, and the upper surface side of the female screw holding member 25a has the same shape as the recess 53 on the fixing bush side. A square columnar female screw side recess 23a protruding downward is provided.

As shown in FIG. 12, the female screw 20a having such a shape is passed through the screw portion 13 of the male screw 10 and positioned below the fixing bush 50a. Then, the fixing bush-side convex portion 52a on the lower surface side of the fixing bush 50a and the female screw-side concave portion 23a on the upper surface side of the female screw holding member 25a are fitted to each other, so that the female screw 20a can It cannot be rotated.

As shown in FIG. 12, the fastening device 2 of Example 2 having such a configuration is also used in a Western-style flush toilet equipped with a Western-style toilet body 8 and a toilet seat device 9, and the toilet seat device 9 is used as a Western-style toilet. Fix it in the toilet seat mounting hole 7 of the toilet body 8.

[0063] Specifically, from above the bottom wall 9a of the toilet seat device 9 placed on the Western-style toilet main body 8, the cylindrical portion 12 and the screw portion 13 of the male screw 10, the female screw 20, and a plurality of fixings Insert the bush 50a into the toilet seat mounting hole 7 of the Western-style toilet body 8. Then, the lower surface of the washer 30 is brought into contact with the upper surface of the bottom wall 9a of the toilet seat device 9 so that the washer 30 cannot rotate relative to the bottom wall 9a of the toilet seat device 9.

[0064] Here, a male screw 10 having a sufficiently long threaded portion 13 is prepared in advance, and the number of fixing bushes 50a is appropriately selected on the spot, so that it is positioned at the lowest position. It is possible to easily implement the state in which the enlarged diameter portion 51 of the fixing bush 50a protrudes moderately from the opposite side of the toilet seat mounting hole 7.

[0065] Then, when the head 11 of the male screw 10 is rotated, the female screw 20a that is screwed into the threaded portion 13 causes the washer 30, the plurality of fixing bushes 50a, and the female screw holding member 25a to be unable to rotate with respect to each other. Therefore, the rotation is restricted, and the relative rotation with respect to the screw portion 13 moves to the head portion 11 side of the screw portion 13. As a result, as shown in FIG. 15, the axial length of each fixing bush 50a is shortened, and the lantern-shaped enlarged diameter portion 51 is expanded by compression deformation. At this time, if the fixing bush 50a located in the toilet seat mounting hole 7 is in close contact with the toilet seat mounting hole 7, the diameter of the fixing bush 50a cannot be further increased. Regulate the move to. Further, the lowermost fixing bush 50a is greatly expanded in diameter and engaged with the opposite side of the toilet seat mounting hole 7. Thus, the fastening device 2 can also fix the toilet seat device 9 to the toilet seat mounting hole 7 of the Western-style toilet body 8 from above.

[0066] Further, when the toilet seat mounting hole 7 of the Western-style toilet body 8 is shallow, the fastening device 2 has a single fixed bush 50a as shown in Fig. 16, thereby increasing the diameter of the fixed bush 50a. 51 is the force on the opposite side of the toilet seat mounting hole 7 It is possible to easily carry out a state where it protrudes moderately. Thus, the fastening device 2 can exert a certain fixing force even when the toilet seat mounting hole 7 is shallow.

Therefore, the fastening device 2 of the second embodiment can also achieve the same operational effects as the fastening device 1 of the first embodiment.

[0068] In the fastening device 2, the female screw 20a and the fixing bush 50a are separate. For this reason, in this fastening device 2, the fixing bush 50a from which the female screw 20a is separated can also be used as a length adjusting bush, and the manufacturing cost can be further reduced. .

Furthermore, in this fastening device 2, as shown in FIG. 12, the fixing bush 50a located in the toilet seat mounting hole 7 is formed with a diameter-expanded portion that expands in the middle by shortening the axial length. This corresponds to the length adjustment bush. For this reason, the fastening bush 50a, which also serves as a length adjusting bush at the time of fastening, is expanded in diameter in the toilet seat mounting hole 7, so that the fastening device 2 can exert a more reliable fastening force.

Example 3

As shown in FIG. 17, in the fastening device 3 of the third embodiment, the length adjusting bush and the fixing bush 50a are integrated, and a fixing bush 50b configured to be separable is adopted. Different from the fastening device 1 of the first embodiment. Other configurations are the same as those of the fastening device 1 of Example 1. Because it is like, explanation is omitted.

[0071] As shown in Fig. 18 (a), the fixing bush 50b is a rectangular columnar protruding bush-side recess 53b that protrudes long downward, and the fixing bush-side recess 53b The cross section is the same as the cross section of the fixing bush side recess 53 of the fixing bush 50 of the first embodiment. For this reason, as shown in FIG. 18 (b), the fixing bush side recess 53b can be cut and shortened at an arbitrary position, and the fixing bush side recess 53b after the shortening can also be shortened. The side protrusions 32 can be fitted to each other. It is preferable that the fixing bush-side recess 53b is not twisted and has high rigidity and material strength. For example, the enlarged diameter portion 51 is made of soft rubber and the fixing bush-side recess 53b is made of hard rubber or steel. As a product made of fat, it is preferable to integrally form by composite molding or the like. Other configurations are the same as those of the fixing bush 50 of the first embodiment, and thus the description thereof is omitted.

As shown in FIG. 17, the fastening device 3 of Example 3 having such a configuration is also used in a Western-style flush toilet equipped with a Western-style toilet body 8 and a toilet seat device 9, and the toilet seat device 9 is used as a Western-style toilet. Fix it in the toilet seat mounting hole 7 of the toilet body 8.

[0073] Specifically, from above the bottom wall 9a of the toilet seat device 9 placed on the Western-style toilet body 8, the cylindrical portion 12 and the screw portion 13 of the male screw 10, the female screw 20, and the fixing bush 50a Into the toilet seat mounting hole 7 of the Western-style toilet body 8. Then, the lower surface of the washer 30 is brought into contact with the upper surface of the bottom wall 9 a of the toilet seat device 9 so that the washer 30 cannot rotate relative to the bottom wall 9 a of the toilet seat device 9.

[0074] Here, the male bush 10 is prepared in advance so that the threaded portion 13 is sufficiently long, and the fixing bush-side recess 53b is cut to an appropriate short length on the spot to fix the fixing bush. It is possible to easily carry out the state in which the enlarged diameter portion 51 of 50b protrudes moderately from the opposite side of the toilet seat mounting hole 7.

Then, by rotating the head 11 of the male screw 10, the diameter-expanded portion 51 is expanded and engaged with the opposite side of the toilet seat mounting hole 7. Thus, the fastening device 3 can also fix the toilet seat device 9 to the toilet seat mounting hole 7 of the western-style toilet body 8 from above.

Therefore, the fastening device 3 according to the third embodiment can also achieve the same effects as the fastening devices 1 and 2 according to the second embodiment.

[0077] In addition, the fastening device 3 includes a length adjusting bush and a fixing bush which are integrated. Since the fixing bush 50a configured to be separable is employed, the length can be adjusted more finely and easily with respect to the mounting holes of different depths.

In the above, the present invention has been described with reference to the first to third embodiments. However, the present invention is not limited to the first to third embodiments, but can be appropriately modified and applied without departing from the spirit of the present invention. It goes without saying that it can be done.

[0079] For example, the fastening devices 1 to 3 of Examples 1 to 3 are the force that fixes the toilet seat device 9 directly to the toilet seat mounting hole 7 of the western-style toilet body 8 between the toilet seat device 9 and the western-style toilet body 8 A plate may be interposed. In this case, the fastening devices 1 to 3 of Examples 1 to 3 fix the plate directly to the toilet seat mounting hole 7 of the western-style toilet body 8, and the toilet seat device 9 is separately fixed to the plate. Specifically, the bottom wall 9a of the toilet seat apparatus 9 shown in FIGS. 8 to 12 and 15 to 17 is replaced with a plate, and the toilet seat apparatus 9 is further fixed on the plate.

Industrial applicability

[0080] The present invention is applicable to a fastening device and a Western style flush toilet.

Claims

The scope of the claims

[1] a male screw comprising a head, a cylindrical part and a threaded part;

An internal thread screwed into the threaded portion;

At least one length-adjusting bush provided in a non-rotatable portion with the non-rotatable portion and formed in a cylindrical shape extending in the axial direction;

The length adjustment bush restricts upward movement and is provided so as not to rotate relative to the length adjustment bush, and is formed in a cylindrical shape extending in the axial direction. And a rubber fixing bush provided in a relatively non-rotatable manner.

2. The fastening device according to claim 1, wherein the non-rotatable part is a washer separate from the length adjusting bush.

[3] The fastening device according to claim 2, wherein an anti-rotation means for preventing self rotation is formed on a lower surface of the washer.

[4] The fastening device according to any one of claims 1 to 3, wherein the female screw and the fixing bush are separate bodies.

[5] The fastening device according to any one of claims 1 to 3, wherein the length adjusting bush and the fixing bush are separate bodies.

[6] The fastening device according to any one of [1] to [3], wherein the length adjusting bush and the fixing bush are integrated and separable.

[7] The fastening device according to any one of [1] to [3], wherein the length-adjusting bush is formed with an enlarged diameter portion that is enlarged by shortening the axial length.

[8] A Western-style toilet body having a toilet seat mounting hole, and a toilet seat device mounted on the Western-style toilet body and fixed to the toilet seat mounting hole using the fastening device according to claim 1. A featured Western-style flush toilet.