JP4909117B2 - Eccentric tube and hot water mixing faucet equipped with the same - Google Patents

Description

  The present invention relates to an eccentric tube used for connection of a hot and cold water mixing faucet to a hot water (hot water or water) supply pipe, and a hot and cold water mixing faucet provided with the eccentric tube.

  Conventionally, an eccentric tube has been used to connect a hot and cold water mixing faucet to a hot water supply pipe. This eccentric tube is generally an eccentric tube main body and a hot water (hot water or water) introduction portion of the eccentric tube main body. And a pipe joint for connecting to the pipe. In the eccentric pipe, after the pipe joint is connected and fixed to the pipe, the eccentric pipe main body connected to the pipe joint is rotated and aligned, and the eccentric pipe is mixed with hot water by this alignment. It is in a state suitable for mounting a faucet.

Japanese Patent No. 3294830 JP 2006-132207 A

  By the way, various eccentric pipes have been proposed so far, but most of them are difficult to perform the above-mentioned alignment work and hot water mixing faucet installation work and require skill. Although it can be done easily, it is because of the special and complicated structure adopted for that purpose, and it has been forced to significantly increase the cost. It can be said that there is still room for improvement in any type of eccentric tube. .

  The present invention has been made in view of the above-described circumstances, and an object thereof is an eccentric tube capable of achieving both simplification of the alignment operation of the eccentric tube main body and reduction of manufacturing cost, and the same. It is to provide a hot and cold water faucet.

  In order to achieve the above object, an eccentric tube according to the present invention includes an eccentric tube main body and a hot water (herein, “hot water or water”) introduction portion of the eccentric tube main body as hot water (here “hot water or water”). An eccentric pipe provided with a screw-in type pipe joint for connection to a supply pipe, and the pipe joint is provided with two threaded parts in opposite directions in the tightening direction. In addition, a first screwed portion to which one screw portion is screwed is provided in the pipe, a second screwed portion to which the other screw portion is screwed is provided in the hot water introduction portion, and the second screw is further provided. A step portion extending in the circumferential direction is provided on the outer peripheral portion of either the eccentric tube main body or the pipe joint that enters inside with the other screw portion screwed to the attachment portion, and the other is engaged with the step portion. In addition, it can be changed between a state that allows rotation of the eccentric tube body relative to the pipe joint and a state that does not allow it. It is characterized in that a such engaging portion (claim 1).

  Specifically, each of the one and the other threaded portions is a male threaded portion, the first and second threaded portions are each a female threaded portion, and the stepped portion is provided on an outer peripheral portion of a pipe joint, It is preferable that the engaging portion is a screw member that is screwed into a screw hole provided in the hot water introduction portion.

  In order to achieve the above object, a hot and cold water mixing faucet according to the present invention includes the eccentric tube according to claim 1 or 2 (claim 3).

  In the inventions according to claims 1 to 3, an eccentric tube capable of achieving both simplification of the alignment operation of the eccentric tube main body and the reduction of the manufacturing cost, and a hot and cold water mixing faucet provided with the eccentric tube are obtained. .

  That is, in the inventions according to claims 1 and 2, since the eccentric tube main body can be held at a desired position using the engaging portion, the eccentric tube main body alignment operation and the hot water mixing faucet mounting operation are performed. When performing, it is possible to eliminate work that is difficult and requires skill, and it is possible to simplify the above work.

  In addition, the individual configuration of the eccentric tube is very simple, so that it is easy to manufacture and it is possible to achieve a reduction in manufacturing cost.

  In particular, in the invention according to claim 2, the seal structure for preventing water leakage from between the eccentric pipe main body and the pipe joint can be made simple in general, and space saving and cost reduction can be achieved. In this respect, an advantageous eccentric tube can be obtained.

  Furthermore, in the invention which concerns on Claim 3, the hot-water and water mixing faucet which has the said effect is obtained.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. 1 is a perspective view schematically showing a configuration of a hot and cold water mixing faucet provided with an eccentric tube according to an embodiment of the present invention, FIG. 2 is an exploded perspective view schematically showing the configuration of the eccentric tube, and FIG. (A) and (B) are a longitudinal sectional view and an enlarged longitudinal sectional view of an essential part schematically showing the configuration of the eccentric tube before alignment, and FIGS. 4 and 5 are the eccentric tube before and after alignment. FIG. 6 (A) and FIG. 6 (B) are a longitudinal sectional view and a main part enlarged longitudinal sectional view schematically showing the configuration of the eccentric tube after alignment.

  First, as shown in FIG. 1, the eccentric pipe according to this embodiment includes a hot water supply pipe and a water supply pipe (hereinafter simply referred to as a pipe) embedded in a wall W of a bathroom or the like (see FIG. 3A). This is used to connect the hot and cold water faucet M to T. As shown in FIGS. 1 and 2, the eccentric tube includes a substantially crank-shaped eccentric tube body 1 and a screw-in tube for connecting the hot water introduction portion 2 of the eccentric tube body 1 to the pipe T. A joint 3 and an annular decorative cover 4 are provided.

  Here, as shown in FIG. 2 and FIG. 3 (A), the pipe joint 3 is provided with two screw portions (in this embodiment, male screw portions) 5 and 6 whose fastening directions are opposite to each other. Corresponding to this, a first screwed portion (in this embodiment, a female screw portion) 7 to which one screw portion 5 is screwed is provided in the pipe T, and the other screw portion 6 is screwed. A second threaded portion (in this embodiment, a female thread portion) 8 is provided in the hot water introduction portion 2.

  Also, as shown in FIGS. 3A and 3B, either the eccentric pipe body 1 or the pipe joint 3 entering the inside with the other screw part 6 screwed to the second screw part 8. An annular step portion (groove) 9 extending in the circumferential direction is provided on the outer peripheral portion of one (in this embodiment, the eccentric tube main body 1), and the other (the pipe joint 3 in this embodiment) is engaged with the step portion 9. In addition, an engaging portion 10 is provided that can be changed between a state in which the rotation operation of the eccentric tube body 1 with respect to the pipe joint 3 is allowed and a state in which the eccentric operation is not allowed.

  On the other hand, as shown in FIG. 2 and FIG. 3 (A), the eccentric tube main body 1 includes a flow rate adjusting unit 12 having a flow rate adjusting valve 11 for adjusting the flow rate of hot water passing through the inside, and the hot water / water mixing faucet M. And a connection part 13 connected to the.

  On the other hand, as shown in FIGS. 2 and 3A, a seal member (for example, an O-ring) 14 is provided on the outer peripheral portion of the pipe joint 3 so that water leaks between the eccentric pipe body 1 and the pipe joint 3. Is preventing.

  Further, in this embodiment, the engaging portion 10 is a screw member such as a pan head screw, and a screw hole 15 into which the screw member is screwed is provided in the hot water introduction portion 2 of the eccentric tube main body 1.

  In addition, since the configurations of the hot and cold water mixing tap M, the flow rate adjusting portion 12 and the connecting portion 13 of the eccentric tube main body 1, and the decorative cover 4 can be adopted, a detailed description thereof is omitted here. .

  Next, a method of aligning the eccentric pipe having the above-described configuration and connecting the hot and cold water mixing tap M to the pipe T will be described. First, as an advance preparation, it is necessary to assemble the eccentric tube in the disassembled state shown in FIG. 2. For this purpose, the screw portion 6 of the pipe joint 3 is screwed to the second screw portion 8 of the eccentric tube body 1. After that, the engaging portion (screw member) 10 is screwed into the screw hole 15 so that the engaging portion 10 can be engaged with the annular step portion (groove) 9. However, the front end of the engaging portion 10 is separated from the bottom of the stepped portion 9 without being brought into contact with the bottom of the stepped portion 9 so as to allow the rotation operation of the eccentric tube main body 1 with respect to the pipe joint 3. On the other hand, the decorative cover 4 is attached to the pipe joint 3.

  Then, the two eccentric tubes in the above state are connected to the pipe T, respectively. This connection is performed by screwing the threaded portion 5 of the pipe joint 3 to the first threaded portion 7 provided in the pipe T. At this time, since the threaded portion 5 is a right-hand threaded portion, FIG. As shown, the pipe joint 3 is rotated clockwise.

  Here, as already described, the tightening direction of the threaded portion 5 and the threaded portion 6 provided in the pipe joint 3 is opposite, whereas the threaded portion 5 is a right-hand threaded portion. The thread portion 6 is a left-hand thread portion. Therefore, turning the pipe joint 3 clockwise (in the direction of tightening the screw part 5) means turning in the direction of loosening the screw part 6, and if this turning operation is continued, the eccentric pipe body 1 is rotated. It seems that the screwing of the screw part 6 to the second screwing part 8 will be released soon. However, in this embodiment, since the engaging portion 10 engages with the stepped portion 9, the release is surely prevented and no malfunction occurs.

  Immediately after connecting the pipe joint 3 to the pipe T as described above, as shown in FIGS. 3A and 3B, the engaging portion 10 is on the front side of the step portion 9, that is, on the side far from the wall W (see FIG. It is in contact with the middle left). Then, as shown in FIG. 5, the eccentric tube main body 1 is turned counterclockwise so that the connecting portion 13 of the eccentric tube main body 1 comes to an appropriate position where it can be connected to the hot and cold water mixing tap M. Align (fine-adjust) to.

  Here, since the width of the step portion 9 in the front-rear direction is 5.5 mm and the diameter of the engaging portion 10 is 3 mm, there is a clearance of 2.5 mm, whereby the eccentric tube body 1 is rotated counterclockwise. During the rotation operation, it is freely rotated 360 °.

  When the eccentric tube main body 1 is turned counterclockwise for the above alignment, the engaging portion 10 moves somewhat toward the rear side of the step portion 9. That is, the eccentric tube after the alignment is in the state shown in FIGS. 6A and 6B, and in order to maintain this state, the engagement portion 10 is screwed and the tip abuts against the step portion 9. Then, the state of allowing the eccentric tube main body 1 to rotate with respect to the pipe joint 3 is changed to a state not allowing it.

  By the above operation, the eccentric tube main body 1 maintains the above-mentioned aligned state even if the operator releases the hand. Therefore, the hot water / water mixing faucet M can be easily attached to the eccentric tube in this state. This completes the connection of the hot and cold water mixing tap M to the pipe T.

  In the eccentric tube having the above-described configuration, the eccentric tube main body 1 can be held at a desired position by using the engaging portion 10, so that the alignment operation of the eccentric tube main body 1 and the attachment of the hot and cold water mixing tap M are performed. When the work is performed, a difficult and skillful work can be eliminated, and the above work can be simplified.

  In addition, the individual configuration of the eccentric tube is very simple, so that it is easy to manufacture and it is possible to achieve a reduction in manufacturing cost.

  The present invention is not limited to the above embodiment, and can be implemented with various modifications. For example, in the above embodiment, the screw part 5 is a right-hand thread part and the screw part 6 is a left-hand thread part, but may be reversed. The threaded portions 5 and 6 are female threaded portions, the first and second screwed portions 7 and 8 are male threaded portions, the stepped portion 9 is provided on the outer peripheral portion of the hot water introducing portion 2, and the screw hole 15 is formed in the pipe joint 3. It may be provided.

It is a perspective view showing roughly the composition of the hot and cold water mixing faucet provided with the eccentric pipe concerning one embodiment of the present invention. It is a disassembled perspective view which shows the structure of the said eccentric tube roughly. (A) And (B) is the longitudinal cross-sectional view and principal part expanded longitudinal cross-sectional view which show schematically the structure of the said eccentric tube before alignment. It is a perspective view which shows roughly the structure of the said eccentric tube before alignment. It is a perspective view which shows roughly the structure of the said eccentric tube after alignment. (A) And (B) is the longitudinal cross-sectional view which shows the structure of the said eccentric tube after alignment, and a principal part expanded vertical cross-sectional view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Eccentric pipe main body 2 Hot water introduction part 3 Pipe joint 5 One screw part 6 The other screw part 7 1st screwing part 8 2nd screwing part 9 Step part 10 Engagement part T Piping for hot water supply

Claims (3)

  An eccentric pipe comprising an eccentric pipe main body and a screw-in type pipe joint for connecting the hot water introduction portion of the eccentric pipe main body to a pipe for hot water supply, wherein the tightening directions are opposite to each other. Two screw portions are provided at the front and rear, a first screwed portion to which one screw portion is screwed is provided in the pipe, and a second screwed portion to which the other screw portion is screwed is introduced into the hot water. In addition, a step portion extending in the circumferential direction is provided on the outer peripheral portion of either the eccentric tube main body or the pipe joint that enters inside with the other screw portion screwed to the second screw portion. The eccentric tube is provided with an engaging portion which is engaged with the stepped portion and can be changed between a state where the rotation of the eccentric tube body relative to the pipe joint is allowed and a state where the rotation is not allowed.   The one and other threaded portions are male threaded portions, the first and second threaded portions are female threaded portions, the stepped portion is provided on an outer peripheral portion of a pipe joint, and the engaging portion is hot water. The eccentric tube according to claim 1, wherein the eccentric tube is a screw member that is screwed into a screw hole provided in the introduction portion.   A hot and cold water mixing faucet comprising the eccentric tube according to claim 1.

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