JP2007232156A - Fastening device and western style flush toilet bowl - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fastening device which is applied even to a Western style toilet bowl body of which the depth of the attachment hole such as a toilet seat attachment hole varies considerably, and which exerts a secure fixing force. <P>SOLUTION: The fastening device 1 is provided with a male screw 10, a female screw 20, a washer 30 as a part unrotable, at least one bush 40 for the adjustment of length, and a rubber bush 50 for fixation. The male screw 10 is comprised of a head 11, a cylindrical part 12 and a screw part 13, and the female screw 20 is screwed to the screw part 13. Then the washer 30, which is inserted to the cylindrical part 12, is not rotated even when the head 11 is rotated from above at the time of fastening. The bush 40 is provided so that it is not rotated relatively with the washer 30, and is formed in a cylindrical shape extending in the axial direction. Then the rubber bush 50 for fixation, the movement of which in the upward direction is regulated by the bush 40 for the adjustment of length, is provided so that it is not rotated relatively with the bush 40 for the adjustment of length. The rubber bush 50 for fixation is formed in a cylindrical shape extending axially, and an expanded-diameter part 51 formed by contraction of the axial length is formed at some midpoint. Then the rubber bush 50 is provided so that it is not rotated relatively with the female screw 20. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a fastening device and a Western style flush toilet.

  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 through the cylindrical portion, And a rubber fixing bush formed with an enlarged diameter portion which is enlarged by shortening the axial length.

  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 head-side surface of the non-rotatable portion, 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 in the other end side of the fixing bush and cannot rotate relative to the fixing bush.

  The 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.

  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 screw portion of the male screw, the female screw, and the fixing bush are connected to the Western style. Insert it into the toilet seat mounting hole on the toilet bowl. Here, by selecting a screw portion and a fixing bush having an appropriate length in advance, the expanded diameter portion of the fixing bush is appropriately protruded from the opposite side of the toilet seat mounting hole.

  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 is rotated relative to the screw part to the head side of the screw part. Moving. 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.

  Thus, the fastening device can fix the toilet seat device from above to the toilet seat mounting hole of the Western-style toilet body.

Japanese Utility Model Publication No. 62-21996

  However, in the conventional fastening device described above, if one type of mounting hole such as various toilet seat mounting holes with different depths is to be used, if the mounting hole is too deep, the enlarged diameter portion is mounted. It will be in the state which does not protrude to the other side of a hole, and a diameter expansion part only expands in a mounting hole, and it does not catch on the other side of a mounting hole.

  On the other hand, if the depth of the mounting hole is too shallow, the expanded diameter part will protrude too far from the opposite side of the mounting hole, and the expanded diameter part will be expanded further away from the opposite side of the mounting hole. A gap is created between the hole and the opposite side.

  For this reason, in the conventional fastening device, unless a length suitable for the depth of the mounting hole is selected and used, a reliable fixing force cannot be exhibited.

  When using a fastening device 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, the toilet seat device may be displaced from the western toilet body, There was a possibility that a problem of detachment would occur.

  From the above, in the conventional fastening device, many types of different lengths must be prepared, and it has been difficult to reduce the product cost.

  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 a reliable fixing force. The problem to be solved is to provide a fastening device capable of achieving the above.

The fastening device of the present invention includes a male screw composed of a head, a cylindrical portion, and a screw portion,
An internal thread screwed into the threaded portion;
A non-rotatable portion that is inserted into the cylindrical portion and does not rotate even when the head is rotated from above at the time of fastening;
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 upward movement is restricted by the length adjusting bush, and the length adjusting bush is provided so as not to rotate relative to the length adjusting bush, and is formed in a cylindrical shape extending in the axial direction. A diameter portion is formed, and the female screw and a rubber fixing bush provided so as not to rotate relative to each other are provided.

  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 fixes the toilet seat device to a toilet seat mounting hole of the Western-style toilet body.

  Specifically, with the male screw head pressing the toilet seat device from above, the non-rotatable portion is in contact with the toilet seat device or the Western-style toilet body, the male screw cylindrical portion and the screw portion, and the female screw The length adjusting bush and the fixing bush are inserted into the toilet seat mounting hole of the Western-style toilet body. Here, the threaded part should be sufficiently long in advance, and the diameter-adjusted bushing can be attached to the toilet seat by inserting an appropriate length adjustment bushing between the non-rotatable part and the fixing bushing. It will be in the state which protruded moderately from the other side of the hole. At this time, for example, a plurality of bushes for length adjustment are used in a suitable length by connecting a plurality of bushes in series, or by cutting a long one into a suitable length.

  When the head of the male screw is rotated, the rotation of the female screw that engages with 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. Move to the head side of the 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.

  Thus, the fastening device can securely fix the toilet seat device from above to the toilet seat mounting hole of the Western-style toilet body.

  As described above, the fastening device of the present invention can be adjusted to the length of the length adjusting bush by appropriately adjusting the length of the length adjusting bush without preparing many types of different lengths. It can be set as the state which protruded moderately from the other side of attachment holes, such as. For this reason, this fastening apparatus can prevent the malfunction that an enlarged diameter part is not hooked on the opposite side of an attachment 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.

  Therefore, the fastening device of the present invention 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 can exhibit a certain fixing force.

  And, even if the weight of the user is improperly added to the toilet seat device from above by using the fastening device capable of exhibiting a reliable fixing force in such a Western-style flush toilet, It is possible to prevent a problem that the 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 achieved. For example, the non-rotatable portion can be a washer or bush separate from the length adjusting bush. In this case, irregularities or the like that are meshed with each other between the non-rotatable portion and the length adjusting bush and cannot be rotated relative to each other are formed. Further, the non-rotatable portion and the length adjusting bush may be integrated. In this case, there is no need for unevenness that meshes with each other and makes relative rotation impossible. 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 washer separate from the length adjusting bush. In this case, the non-rotatable part 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.

  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, a non-rotatable part can be easily made into a non-rotatable state by contact | abutting the washer as a non-rotatable part with fastening objects, such as a toilet seat apparatus and a western-style toilet body.

  As the rotation preventing means, for example, 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 screw may be insert-molded in the fixing bush. Moreover, in the fastening device of the present invention, the female screw and the fixing bush can be separated. In this case, the fixing bush from which the female screw is separated can also be used as the length adjusting bush. In this fastening device, the effect of the present invention is obtained by interposing a fixing bush in which at least one female screw is further separated between the non-rotatable portion and the fixing bush to which the female screw is fixed. Can play. 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.

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

  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 portion of the length adjusting bush so that the relative rotation is impossible with the non-rotatable portion. it can.

  In the fastening device of the present invention, the length-adjusting bush may be formed with a diameter-expanded 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 reliable fixing force can be exhibited.

  A Western-style flush toilet of the present invention comprises 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 of the present invention. It is characterized by.

  Even if the weight of the user is improperly added to the toilet seat device from above by using the fastening device of the present invention that exhibits a reliable fixing force as described above, It is possible to prevent a problem that the toilet seat device is displaced from or detached from the Western-style toilet body.

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

  As shown in FIG. 1, the fastening device 1 according to the first embodiment includes a male screw 10, a female screw 20, a washer 30 as a non-rotatable portion, a length adjusting bush 40, and a fixing bush 50. .

  The male screw 10 includes a head portion 11, a cylindrical portion 12, and a screw portion 13, and the female screw 20 is screwed to the screw portion 13 in a state of being fixed to a lower surface side of a fixing bush 50 described later. As shown in FIGS. 2 and 3, the washer 30 is a rectangular flat 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 as the center. Around the four side surfaces of the washer-side convex portion 32, hook-shaped projections 34 as rotation preventing means are disposed so as to protrude downward.

  As shown in FIG. 1, the washer 30 having such a shape is inserted into the cylindrical portion 12 of the male screw 10 and positioned below the head 11 of the male screw 10. The washer 30 is not allowed to rotate with respect to the fastening object when the hook-shaped protrusion 34 abuts against the fastening object. 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. It is designed not to rotate.

  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 recess 43 protruding downward is provided. The length-adjusting bush side recess 43 and the washer-side convex portion 32 are shaped to fit each other, and the length adjusting bush 40 cannot be rotated relative to the washer 30 by fitting both. The 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 inserted through the threaded portion 13 and the cylindrical portion 12 of the male screw 10 and is positioned below the washer 30. When the plurality of length adjustment bushes 40 are inserted so as to be lined up and down, the length adjustment bush side convex portion 42 on the lower surface side of the length adjustment bush 40 positioned on the upper side, and the lower side The length adjustment bushing side recesses 43 on the upper surface side of the length adjustment bushing 40 located in the above are fitted to each other, so that the plurality of length adjustment bushings 40 arranged in the vertical direction cannot be rotated relative to each other.

  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. On the upper surface side of the fixing bush 50, a rectangular bush-shaped fixing bush side recess 53 that has the same shape as the length adjusting bush side recess 43 shown in FIG. 5 and protrudes downward is provided. 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 inserted into the screw portion 13 of the male screw 10 and is positioned below the length adjusting bush 40. The upward movement is restricted. 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 fitted to each other. As a result of the mating, 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.

  For example, as shown in FIG. 8, the fastening device 1 of Example 1 having such a configuration is 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. The body 8 is fixed in the toilet seat mounting hole 7.

  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, the length adjusting bush 40, and the fixing The bush 50 is inserted 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, and the hook-shaped protrusion 34 is fitted into the recess 9 b formed on the bottom wall 9 a, so that the washer 30 is attached to the toilet seat device 9. It is impossible to rotate relative to the bottom wall 9a.

  Here, the male screw 10 having 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 diameter-enlarged portion 51 of the fixing bush 50 can be obtained. It is possible to easily carry out a state of appropriately protruding from the opposite side of the toilet seat mounting hole 7.

  When the head 11 of the male screw 10 is rotated, the female screw 20 that is screwed into the screw portion 13 is rotated because the washer 30, the length adjusting bush 40, and the fixing bush 50 are mutually non-rotatable. Is restricted, rotates relative to the screw portion 13, and moves to the head 11 side of the screw portion 13. 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 to the toilet seat mounting hole 7 of the western-style toilet body 8 from above.

  Further, in the fastening device 1, when the toilet seat mounting hole 7 of the western-style toilet body 8 is shallow, as shown in FIG. 10, by omitting the length adjusting bush 40, the diameter-enlarged portion 51 of the fixing bush 50 becomes the toilet seat. It is possible to easily carry out a state where it protrudes moderately from the opposite side of the mounting hole 7.

  In this case, since the length adjusting bush side recess 43 of the length adjusting bush 40 and the fixing bush side recess 53 of the fixing bush 50 have the same shape, the washer side convex portion 32 of the washer 30 is fixed The fixing bush 50 is made incapable of rotating relative to the washer 30 by fitting the fixing bush side recess 53 of the fixing bush 50 with each other. 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 exert a certain fixing force even when the toilet seat mounting hole 7 is shallow.

  Here, the fastening device 1 according to 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 when the head 11 is rotated from above, and at least one length adjusting bush 40 that is provided so as not to rotate relative to the washer 30 and is formed in a cylindrical shape extending in the axial direction. In addition, the upward movement is restricted by the length adjustment bush 40 and 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. And a rubber fixing bush 50 provided so as not to rotate relative to the female screw 20.

  For this reason, the fastening device 1 can be expanded in diameter only by selecting the number of the length adjusting bushes 40 and adjusting the length appropriately without preparing many types of different lengths. It can be easily implemented that the portion 51 is appropriately protruded from the opposite side of the toilet seat mounting hole 7. For this reason, this fastening device 1 can prevent the problem that the enlarged diameter portion 51 is not caught on the opposite side of the toilet seat mounting hole 7. Further, the 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.

  Therefore, the fastening device 1 according to the first embodiment 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 certain fixing force. Yes.

  In addition, since it is not necessary to prepare many types of fastening devices 1 having different lengths, the manufacturing cost can be reduced.

  And even if it is a case where a user's weight is improperly added to the toilet seat apparatus 9 from upper direction by using the fastening device 1 which can exhibit a reliable fixing force in this way for a Western-style flush toilet bowl. Thus, 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 the fastening device 1, the non-rotatable portion is a washer 30 that is separate from the length adjusting bush 40. Since the washer 30 has a simple flat plate shape and the length adjusting bush 40 has a simple cylindrical shape, the fastening device 1 can further reduce the manufacturing cost.

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

  Moreover, in this fastening apparatus 1, since the length adjustment bush 40 and the fixing bush 50 are separate bodies, a plurality of length adjustment bushes 40 can be elongated in series. Length adjustment is easy.

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

  In the fixing bush 50 of the first embodiment, the female screw 20 is insert-molded on the lower surface side. However, in the fixing bush 50a, as shown in FIG. 13, the female screw 20a is a separate body and is newly formed on the lower surface side. A fixing bush side convex portion 52a is provided in a projecting manner. 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. Since other configurations are the same as those of the fixing bush 50 of the first embodiment, the description thereof is omitted.

  As shown in FIG. 12, at least one of the fixing bushes 50 a having such a shape is inserted through the screw portion 13 and the cylindrical portion 12 of the male screw 10 and is positioned below the washer 30. When the plurality of fixing bushes 50a are inserted so as to be lined up and down, the fixing bush-side convex portion 52a on the lower surface side of the fixing bush 50a located on the upper side and the fixing bush located on the lower side The fixing bush side recesses 53a on the upper surface side of 50a are fitted to each other, so that the plurality of fixing bushes 50a arranged in the vertical direction cannot be rotated relative to each other.

  As shown in FIG. 14, the female screw 20a is insert-molded in a resin female screw holding member 25a. The female screw 20a has the same shape as the fixing bush side recess 53 on the upper surface side of the female screw holding member 25a. A projecting quadrangular columnar female screw side recess 23a is provided.

  As shown in FIG. 12, the female screw 20a having such a shape is inserted through the screw portion 13 of the male screw 10 and is positioned below the fixing bush 50a. 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 rotates relative to the fixing bush 50a. Impossible.

  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 as shown in FIG. 12, and the toilet seat device 9 is used as a Western-style toilet body 8. The toilet seat mounting hole 7 is fixed.

  Specifically, the cylindrical portion 12 and the screw portion 13 of the male screw 10, the female screw 20, and the plurality of fixing bushes 50 a are connected to the Western style from above the bottom wall 9 a of the toilet seat device 9 placed on the Western-style toilet body 8. It is inserted into the toilet seat mounting hole 7 of the 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.

  Here, the male screw 10 having a sufficiently long screw portion 13 is prepared in advance, and the number of the fixing bushes 50a is appropriately selected on the spot, whereby the diameter of the fixing bush 50a located at the lowest position is increased. It can be easily implemented that the portion 51 is appropriately protruded from the opposite side of the toilet seat mounting hole 7.

  When the head 11 of the male screw 10 is rotated, the female screw 20a that is screwed into the screw portion 13 is rotated because the washer 30, the plurality of fixing bushes 50a, and the female screw holding member 25a are not rotatable relative to each other. It is regulated and rotates relative to the screw portion 13 and moves to the head 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, when the fixing bush 50a positioned 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, and the fixing bush 50a positioned above the lowermost position is moved upward. Regulate the movement of Further, the lowermost fixing bush 50 a has a large diameter and engages 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.

  Further, in the fastening device 2, when the toilet seat mounting hole 7 of the western-style toilet body 8 is shallow, as shown in FIG. 16, the fixing bush 50a has a single fixed bush 50a, so that the enlarged diameter portion 51 of the fixing bush 50a is the toilet seat. It is possible to easily carry out a state where it protrudes moderately from the opposite side of the mounting hole 7. In this way, 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 according to the second embodiment can achieve the same effects as the fastening device 1 according to the first embodiment.

  Further, in the fastening device 2, the female screw 20a and the fixing bush 50a are separate bodies. For this reason, in this fastening device 2, the fixing bush 50a from which the female screw 20a is separated can be used as the 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 adjusted in length so that a diameter-expanded portion that is enlarged by shortening the axial length is formed in the middle. It corresponds to a bush for use. For this reason, since the diameter of the fixing bush 50a that also serves as the length adjusting bush at the time of fastening is increased in the toilet seat mounting hole 7, the fastening device 2 can exhibit a more reliable fixing force.

  As shown in FIG. 17, the fastening device 3 according to the third embodiment is such that the length adjusting bush and the fixing bush 50a are integrated, and the fixing bush 50b configured to be separable is employed. This is different from the fastening device 1. Since other configurations are the same as those of the fastening device 1 of the first embodiment, the description thereof is omitted.

  As shown in FIG. 18 (a), the fixing bush 50b is formed with a rectangular bush-like fixing bush side recess 53b that protrudes downward, and the cross section of the fixing bush side recess 53b is as follows. The cross section of the fixing bush side recess 53 of the fixing bush 50 of the first embodiment is the same. For this reason, as shown in FIG. 18B, 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 is also a washer of the washer 30. The side protrusions 32 can be fitted to each other. The fixing bush-side recess 53b is preferably made of a material that is rigid enough to prevent twisting. 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 resin. It is preferable to integrate 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 body 8. The toilet seat mounting hole 7 is fixed.

  Specifically, the cylindrical portion 12 and the screw portion 13 of the male screw 10, the female screw 20, and the fixing bush 50a are connected to the western-style toilet body from above the bottom wall 9a of the toilet seat device 9 placed on the western-style toilet body 8. 8 is inserted into the toilet seat mounting hole 7. 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.

  Here, the male screw 10 is prepared in advance so that the threaded portion 13 is sufficiently long, and the diameter of the fixing bush 50b is reduced by cutting the length of the fixing bush side recess 53b appropriately short on the spot. It can be easily implemented that 51 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 achieve the same effects as the fastening devices 1 and 2 according to the first and second embodiments.

  In addition, the fastening device 3 has a length adjusting bush and a fixing bush integrated with each other, and employs a fixing bush 50a configured to be separable. The length can be adjusted more finely and easily.

  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, and can be appropriately modified and applied without departing from the spirit of the present invention. Needless to say.

  For example, in the fastening devices 1 to 3 of the first to third embodiments, the toilet seat device 9 is directly fixed to the toilet seat mounting hole 7 of the western-style toilet body 8, but the plate is interposed between the toilet seat device 9 and the western-style toilet body 8. May be interposed. In this case, in the fastening devices 1 to 3 of the first to third embodiments, the plate is directly fixed 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 device 9 illustrated in FIGS. 8 to 12 and 15 to 17 is replaced with a plate, and the toilet seat device 9 is further fixed on the plate.

  The present invention can be used for a fastening device and a Western style flush toilet.

It is sectional drawing of the fastening apparatus of Example 1. FIG. It is a sectional view of a washer concerning a fastening device of Example 1. FIG. 3 is a view of the washer viewed from the direction A in FIG. 2 according to the fastening device of the first embodiment. It is sectional drawing of the bush for length adjustment concerning the fastening apparatus of Example 1. FIG. FIG. 5 is a diagram of the length adjusting bush as viewed from the direction B of FIG. 4 according to the fastening device of the first embodiment. FIG. 5 is a view of the length adjusting bush as viewed from the direction C in FIG. 4 according to the fastening device of the first embodiment. FIG. 3 is a cross-sectional view of a fixing bush according to the fastening device of the first embodiment. It is sectional drawing which concerns on the fastening apparatus of Example 1 and shows the state before fixing a toilet seat apparatus to the toilet seat attachment hole of a western-style toilet bowl main body. It is sectional drawing which concerns on the fastening apparatus of Example 1, and shows the state after fixing a toilet seat apparatus to the toilet seat attachment hole of a western-style toilet bowl main body. It is sectional drawing which concerns on the fastening apparatus of Example 1 and shows the state before fixing a toilet seat apparatus to the toilet seat attachment hole of a western-style toilet bowl main body. It is sectional drawing which concerns on the fastening apparatus of Example 1, and shows the state after fixing a toilet seat apparatus to the toilet seat attachment hole of a western-style toilet bowl main body. It is sectional drawing which concerns on the fastening apparatus of Example 2, and shows the state before fixing a toilet seat apparatus to the toilet seat attachment hole of a western-style toilet bowl main body. It is sectional drawing of the bush for fixation concerning the fastening apparatus of Example 2. FIG. It is sectional drawing of the internal thread and internal thread holding member in connection with the fastening apparatus of Example 2. FIG. It is sectional drawing which concerns on the fastening apparatus of Example 2, and shows the state after fixing a toilet seat apparatus to the toilet seat attachment hole of a western-style toilet bowl main body. It is sectional drawing which concerns on the fastening apparatus of Example 2, and shows the state before fixing a toilet seat apparatus to the toilet seat attachment hole of a western-style toilet bowl main body. It is sectional drawing which concerns on the fastening apparatus of Example 3, and shows the state before fixing a toilet seat apparatus to the toilet seat attachment hole of a western-style toilet bowl main body. (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 screw 11 ... Head 12 ... Cylindrical portion 13 ... Screw portion 20, 20a ... Female screw 23a ... Female screw side recess 30 ... Rotation Impossible part (washer)
32 ... Washer side convex part 34 ... Anti-rotation means (saddle-shaped projection part)
40 ... Length adjusting bush 42 ... Length adjusting bush side convex portion 43 ... Length adjusting bush side concave portion 51 ... Diameter-increased portion 50, 50a, 50b ... Fixing bush 52a ... Fixing bush side convex portion 53, 53b ... Bushing side recess for fixing

Claims (8)

A male screw comprising a head, a cylindrical part and a threaded part;
An internal thread screwed into the threaded portion;
A non-rotatable portion that is inserted into the cylindrical portion and does not rotate even when the head is rotated from above at the time of fastening;
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 upward movement is restricted by the length adjusting bush, and the length adjusting bush is provided so as not to rotate relative to the length adjusting bush, and is formed in a cylindrical shape extending in the axial direction. A fastening device comprising a rubber fixing bush formed with a diameter portion and provided so as not to rotate relative to the female screw.   The fastening device according to claim 1, wherein the non-rotatable portion is a washer separate from the length adjusting bush.   The fastening device according to claim 2, wherein a rotation preventing means for preventing the rotation of the washer is formed on a lower surface of the washer.   The fastening device according to any one of claims 1 to 3, wherein the female screw and the fixing bush are separate bodies.   The fastening device according to any one of claims 1 to 4, wherein the length adjusting bush and the fixing bush are separate bodies.   The fastening device according to any one of claims 1 to 4, wherein the length adjustment bush and the fixing bush are integrated and separable.   The fastening device according to any one of claims 1 to 6, wherein the length-adjusting bush is formed with an enlarged diameter portion that is enlarged by shortening the axial length.   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 any one of claims 1 to 7. A Western-style flush toilet.

Images