Faucet

Abstract

To provide a faucet that enables simple attachment of a hot-water supply pipe and a water supply pipe to a faucet body and suppresses the risk of damage.SOLUTION: A faucet 1 comprises: a substantially cylindrical connection member 10 having a hot-water supply path and a water supply path inside; a cartridge 6 that mixes hot water supplied from the hot-water supply path and water supplied from the water supply path and discharges the mixed water; and a hot-water supply pipe 3 connected to the hot-water supply path and a water supply pipe 4 connected to the water supply path. A slit part 23 is formed in the connection member 10. In a state where the hot-water supply pipe 3 and the water supply pipe 4 are inserted into the hot-water supply path and the water supply path, a plate member 40 inserted into the slit part 23 engages with second step parts 3a4 and 4a4 of the hot-water supply pipe 3 and the water supply pipe 4, thereby fixing the hot-water supply pipe 3 and the water supply pipe 4 to the connection member 10. A pair of guide column parts 23e connecting both outer edge surfaces in the direction of an axis A are formed on the right and left in the slit part 23, and small U-shaped cutout parts 43 for making the respective guide column parts 23e pass through are formed in the plate member 40.SELECTED DRAWING: Figure 5

Description

Technical Field

[0001] The present invention relates to a faucet. More specifically, it relates to a faucet to which hot water and water are supplied from below.

Background Art

[0002] Conventionally, there has been known a faucet in which an opening / closing handle portion is attached to the upper surface portion of a faucet body disposed substantially perpendicular to the installation surface, a hot water supply pipe and a water supply pipe are attached to the lower surface portion, and a water discharge pipe is attached to the side surface portion. In the faucet disclosed in Patent Document 1, a cartridge for adjusting the mixing ratio of hot and cold water is connected to the upper surface portion of a substantially columnar water passage portion disposed inside the faucet body, and insertion holes into which the hot water supply pipe and the water supply pipe are inserted are formed in the lower surface portion. And a slit is provided in the water passage portion that notches a part of the outer peripheral portion in a cross section intersecting the central axis, and a plate-like pressing member is fitted into a recess formed in the outer peripheral portions of the hot water supply pipe and the water supply pipe inserted into each insertion hole and is disposed in the slit. Thereby, the hot water supply pipe and the water supply pipe are connected to the water passage portion.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the technique described in Patent Document 1 above, if the hot water supply pipe and the water supply pipe are to be arranged close to the central axis of the water passage portion, the slit will be provided extending close to the central axis. Then, there is a risk that the strength balance of the water passage portion will be lost and it will be easily damaged.

[0005] In view of such problems, an object of the present invention is to provide a faucet in which a hot water supply pipe and a water supply pipe can be easily attached to the faucet body and the risk of breakage is suppressed.

Means for Solving the Problem

[0006] The first invention of the present invention is a faucet having a substantially cylindrical connecting member having a hot water supply passage and a water supply passage inside, a cartridge that mixes the hot water supplied from the hot water supply passage and the water supplied from the water supply passage and discharges water, a hot water supply pipe connected to the hot water supply passage, and a water supply pipe connected to the water supply passage. A slit extending in a direction perpendicular to the central axis of the cylinder is formed in the connecting member. In a state where the hot water supply pipe and the water supply pipe are inserted into the hot water supply passage and the water supply passage, a plate member inserted into the slit engages with a part of the hot water supply pipe and a part of the water supply pipe, so that the hot water supply pipe and the water supply pipe are fixed to the connecting member. Columnar portions connecting both outer edge surfaces in the direction of the central axis are formed one by one corresponding to the hot water supply pipe and the water supply pipe in the slit, and through holes that are in sliding contact with each columnar portion and pass through each columnar portion are formed in the plate member when the plate member is inserted into the slit.

[0007] According to the first invention, in a faucet in which a hot water supply pipe and a water supply pipe can be easily attached to a connecting member, the risk of damage to the connecting member can be suppressed. That is, even if the hot water supply pipe and the water supply pipe are arranged near the central axis of the connecting member and the strength balance is deteriorated due to the presence of the slit, columnar portions connecting both outer edge surfaces in the direction of the central axis of the slit are formed one by one corresponding to the hot water supply pipe and the water supply pipe, so that the strength in the direction of the central axis and the circumferential direction centered on the central axis of the portion where the slit exists is increased. Further, when the plate member is inserted into the slit, the outer edge surface of each through hole is in sliding contact with each columnar portion and is inserted, so that the direction in which the plate member is inserted can be regulated.

[0008] The second invention of the present invention is characterized in that, in the first invention, an outer cylinder member is attached to cover the connecting member in the radial direction in a state where the plate member is inserted into the slit of the connecting member and engaged with a part of the hot water supply pipe and a part of the water supply pipe, thereby preventing the plate member from moving outward in the radial direction.

[0009] According to the second invention, the plate member engages with a part of the hot water supply pipe and a part of the water supply pipe, and is arranged within the slit, and movement radially outward is prevented by the outer cylinder member. As a result, it is possible to prevent the plate member from coming off from the slit with a simple structure.

[0010] According to a third invention of the present invention, in the first invention or the second invention, a part of the hot water supply pipe and a part of the water supply pipe are a surface on the opposite side of the end of the hot water supply pipe in the enlarged diameter portion provided in the hot water supply pipe and a surface on the opposite side of the end of the water supply pipe in the enlarged diameter portion provided in the water supply pipe.

[0011] According to the third invention, the hot water supply pipe and the water supply pipe can be fixed to the connecting member with a simple structure in which the hot water supply pipe and the water supply pipe are provided with enlarged diameter portions. In addition, the workability of assembling the hot water supply pipe and the water supply pipe to the connecting member is better than that of inserting the plate member into the annular recess formed in the outer peripheral portions of the hot water supply pipe and the water supply pipe.

Brief Description of the Drawings

[0012]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Embodiments for Carrying Out the Invention

[0013] The configuration of the faucet 1 according to an embodiment of the present invention will be described with reference to FIGS. 1 to 6. In the following description, the description of directions is based on the up-down, front-back, left-right directions shown in each figure.

[0014] As shown in FIGS. 1 and 2, the faucet 1 according to the present embodiment is a hot and cold water mixing faucet installed on the top plate of a sink or a washbasin. The faucet 1 includes a faucet body 2 that mixes and discharges hot water and cold water supplied from below the top plate, a hot water supply pipe 3 that supplies hot water to the faucet body 2 from below, a water supply pipe 4 that supplies water, and a discharge pipe 5 attached to the faucet body 2.

[0015] As shown in FIGS. 1 to 3, the faucet body 2 includes a cartridge 6 that functions to mix the supplied hot water and cold water and adjust the temperature of the discharged water and the amount of the discharged water, a connecting member 10 that connects the cartridge 6, the hot water supply pipe 3, and the water supply pipe 4 in a watertight state, a casing 30, and a handle 7 that operates the cartridge 6.

[0016] As shown in FIGS. 1 to 3, the cartridge 6 is a substantially cylindrical component that functions to mix the supplied hot water and cold water and adjust the temperature of the discharged water and the amount of the discharged water by relatively moving a movable disk (not shown) with respect to a fixed disk (not shown) disposed in a cylindrical case by operating an operation portion 61. The cartridge 6 is disposed in a state of being in close contact with the upper surface portion 10a of the connecting member 10 on the lower side surface thereof, so as to mix the hot water supplied from the hot water passage 12 of the connecting member 10 and the water supplied from the water passage 11 and discharge the mixture into the mixing water passage 13 to perform its function (see FIGS. 4 and 6).

[0017] As shown in FIGS. 2 to 6, the connecting member 10 is a resin part having a substantially cylindrical shape with the central axis as axis A. The connecting member 10 has a hot water supply passage 12 and a water supply passage 11 that penetrate vertically inside, and a mixing water passage 13 that extends vertically from the upper surface portion 10a to the vertical central portion. Further, it has a female-threaded vertical screw hole 14 that extends upward from the lower surface portion 10b, and a female-threaded horizontal screw hole 15 that extends in the front-rear direction slightly above the lower surface portion. As clearly shown in FIG. 4, the hot water supply passage 12 and the water supply passage 11 have a bilaterally symmetric shape, and have small-diameter portions 12a, 11a that extend from the upper surface portion 10a to the substantially central portion in the vertical direction, first enlarged-diameter portions 12b, 11b below the small-diameter portions 12a, 11a, and second enlarged-diameter portions 12c, 11c below the first enlarged-diameter portions 12b, 11b. The diameters of the first enlarged-diameter portions 12b, 11b are about 1.7 times the diameters of the small-diameter portions 12a, 11a, and are set slightly larger than the diameters of the large-diameter portions 3a, 4a of the hot water supply pipe 3 and the water supply pipe 4. The diameters of the second enlarged-diameter portions 12c, 11c are set to about twice the diameters of the small-diameter portions 12a, 11a. The vertical dimensions of the first enlarged-diameter portions 12b, 11b are set to about 0.4 times the vertical dimensions of the small-diameter portions 12a, 11a, and the vertical dimensions of the second enlarged-diameter portions 12c, 11c are set to about 0.8 times the vertical dimensions of the small-diameter portions 12a, 11a. Between the small-diameter portions 12a, 11a and the first enlarged-diameter portions 12b, 11b, fourth stepped portions 12d, 11d, which are cylindrical cross-sectioned surface portions extending in the circumferential direction, are formed. Here, axis A corresponds to the "central axis" in the claims.

[0018] As shown in FIGS. 2 to 6, on the outer diameter surface portion of the connecting member 10, there are formed a male screw portion 16 with a male screw cut from above, an upper ring member groove 17, an upper O-ring groove 18, a discharge pipe connecting portion 19, a lower O-ring groove 20, a lower ring member groove 21, and a first step portion 22. The male screw portion 16 is a portion that is screwed into a female screw portion 31a cut on the lower end side of the upper casing 31. The upper ring member groove 17 is an annular groove for disposing an upper ring member 17a, which is a resin-made annular member, for smoothly sliding with the middle casing 32 that slides in the circumferential direction with respect to the connecting member 10. Both the upper O-ring groove 18 and the lower O-ring groove 20 are annular grooves for disposing O-rings. The discharge pipe connecting portion 19 is a portion having an irregular cross-sectional shape for connecting the mixing water passage 13 and the discharge pipe 5. The O-rings disposed in the upper O-ring groove 18 and the lower O-ring groove 20 function to maintain a watertight state between the discharge pipe connecting portion 19 and the middle casing 32 so that water does not leak up and down. The lower ring member groove 21 is an annular groove for disposing a lower ring member 21a, which is a resin-made annular member, for smoothly sliding with the middle casing 32 that slides in the circumferential direction with respect to the connecting member 10. The first step portion 22 is a surface portion having a cylindrical cross-section extending in the circumferential direction, and is a portion where the connecting member 10 is supported by the lower casing 33 in contact with the third step portion 33a of the lower casing 33.

[0019] As shown in FIGS. 3 to 6, a slit portion 23 having a vertical dimension of about 2 / 3 of the vertical dimension of the lower ring member groove 21 is formed radially inside the lower ring member groove 21, extending upward from the lower surface of the lower ring member groove 21. As clearly shown in FIG. 5, in the slit portion 23, a lower outer edge surface 23a which is the lower outer peripheral surface portion is flush with the lower surface of the lower ring member groove 21, and an upper outer edge surface 23b (see FIG. 3) which is the upper outer peripheral surface portion is separated from the lower outer edge surface 23a upward by a dimension slightly larger than the thickness dimension of the plate member 40. The lower outer edge surface 23a and the upper outer edge surface 23b are connected by a front column portion 23c having a substantially mountain-shaped cross section in the horizontal direction at the front side, side column portions 23d having a pair of arcuate-shaped cross sections in the horizontal direction on both the left and right sides, and a pair of left and right guide column portions 23e disposed between the respective side column portions 23d, and are spaced apart in the vertical direction. The guide column portion 23e has a substantially rectangular cross section in the horizontal direction with a chamfered circular shape at the rear side. The dimension in the front-rear direction which is the major axis direction is set to be about 0.7 times the diameter of the small-diameter portions 3b and 4b of the hot water supply pipe 3 and the water supply pipe 4, and the dimension in the left-right direction which is the minor axis direction is set to be about 0.3 times the diameter of the small-diameter portions 3b and 4b of the hot water supply pipe 3 and the water supply pipe 4. Here, the slit portion 23 and the guide column portion 23e respectively correspond to the "slit" and the "columnar portion" in the claims. Further, the lower outer edge surface 23a and the upper outer edge surface 23b correspond to the "both outer edge surfaces" in the claims.

[0020] As shown in FIGS. 3 to 6, the hot water supply pipe 3 and the water supply pipe 4 have the same shape and include a large-diameter portion 3a, 4a, a small-diameter portion 3b, 4b, a connecting portion 3c, 4c, and a hose portion 3d, 4d from one end side. The outer diameters of the large-diameter portions 3a, 4a are set slightly smaller than the inner diameters of the first enlarged-diameter portions 12b, 11b of the connecting member 10, and the axial dimensions of the large-diameter portions 3a, 4a are set slightly smaller than the vertical dimensions of the first enlarged-diameter portions 12b, 11b of the connecting member 10. Two O-ring grooves 3a1, 4a1 are formed in the large-diameter portions 3a, 4a at intervals in the axial direction, and O-rings 3a2, 4a2 are disposed in the respective O-ring grooves 3a1, 4a1. The upper end faces of the large-diameter portions 3a, 4a are the upper end faces 3a3, 4a3. The outer diameter of the small-diameter portions 3b, 4b is set to about 0.8 times the outer diameter of the large-diameter portions 3a, 4a, and the axial dimension of the small-diameter portions 3b, 4b is set to about 3 times the axial dimension of the large-diameter portions 3a, 4a. A second stepped portion 3a4, 4a4, which is a cylindrical cross-sectional surface portion extending in the circumferential direction, is formed between the large-diameter portions 3a, 4a and the small-diameter portions 3b, 4b. The other end sides of the hot water supply pipe 3 and the water supply pipe 4 are connected to a hot water supply source and a water supply source. Here, the large-diameter portions 3a, 4a correspond to the "enlarged-diameter portion" in the claims.

[0021] As shown in FIGS. 2 to 6, the plate member 40 is a plate-shaped metal member having a substantially inverted E shape when viewed from above. The thickness dimension of the plate member 40 is set to be slightly smaller than the vertical dimension of the slit portion 23 of the connecting member 10. When viewed from above, the outer shape of the plate member 40 has a straight front end portion extending in the left-right direction, an arc shape that is a part of a circle whose rear end portion forms the bottom of the lower ring member groove 21, and left and right end portions formed in a straight line extending in the front-rear direction. Further, the plate member 40 has a pair of left and right notch openings 41 that open forward when viewed from above. Each notch opening 41 is formed in a left-right symmetric shape with respect to the center line 40C of the plate member 40, and has a large U-shaped notch portion 42 on the front side and a small U-shaped notch portion 43 on the rear side. The center line of the large U-shaped notch portion 42 and the center line of the small U-shaped notch portion 43 are arranged as a notch center line 41C that coincides and extends in the front-rear direction. The left-right dimension between each notch center line 41C is equal to the dimension between the central axes of the hot water supply pipe 3 and the water supply pipe 4, and is also equal to the dimension between the center lines in the major axis direction of each guide column portion 23e. The left-right dimension of the large U-shaped notch portion 42 is set to be slightly larger than the outer diameters of the small diameter portions 3b and 4b of the hot water supply pipe 3 and the water supply pipe 4, and the left-right dimension of the small U-shaped notch portion 43 is set to be slightly larger than the left-right dimension of the guide column portion 23e. A contact surface portion 44, which is a flat surface extending in the left-right direction, is formed in the portion between each large U-shaped notch portion 42 at the front end. An arc-shaped portion 45 is formed at the rear end of the plate member 40, and a pair of left and right side surface portions 46 are formed at the left and right ends of the plate member 40. When the plate member 40 is inserted into the slit portion 23 of the connecting member 10 from the side of the contact surface portion 44, the forward movement stops in a state where the contact surface portion 44 abuts against the rear side surface of the front column portion 23c. At this time, the arc-shaped portion 45 coincides with the bottom of the lower ring member groove 21, and each side surface portion 46 is in sliding contact with the radially inner surface of each side column portion 23d. Further, each guide column portion 23e is inserted into each small U-shaped notch portion 43. Here, the small U-shaped notch portion 43 corresponds to the "through hole" in the claims.

[0022] As shown in FIGS. 1 to 3, the casing 30 is a cylindrical member that houses the cartridge 6 and the connecting member 10 inside, and includes an upper casing 31, a middle casing 32, and a lower casing 33. The upper casing 31 is a substantially cylindrical member formed such that the diameter gradually decreases as the upper end portion side faces upward, and a female screw portion 31a that screws into the male screw portion 16 of the connecting member 10 is formed on the lower end portion side. The reason why the diameter of the upper end portion side is reduced is to avoid mutual interference during the operation of the handle 7. The middle casing 32 is a cylindrical member that covers the portion from the upper ring member groove 17 to the lower ring member groove 21 of the connecting member 10. The discharge pipe 5 is attached to the front side, and can be connected to the discharge pipe connecting portion 19 of the connecting member 10 in a watertight state. By interposing an upper ring member 17a and a lower ring member 21a between the connecting member 10, the discharge pipe 5 can rotate in the left-right direction with respect to the connecting member 10, and O-rings are disposed above and below the discharge pipe connecting portion 19 so that watertightness is maintained even when rotating. The lower casing 33 is a substantially cylindrical member formed such that the outer diameter portion on the lower end portion side gradually increases as it faces downward. A third step portion 33a is formed on the upper portion of the inner diameter side portion, which is a surface portion having a cylindrical cross-section extending in the circumferential direction, and is a portion that abuts against the first step portion 22 of the connecting member 10 to support the connecting member 10. A screw hole 33b through which a screw 33c for stopping the rotation of the connecting member 10 with respect to the lower casing 33 is formed on the front side of the central portion in the vertical direction of the lower casing 33. Here, the casing 30 corresponds to the "outer cylindrical member" in the claims.

[0023] The assembly procedure of the faucet 1 will be described. First, the first stage portion 22 of the connecting member 10 is placed in contact with the upper surface of the third stage portion 33a of the lower casing 33, and the screw 33c is passed through the screw hole 33b and tightened against the horizontal screw hole 15, and at the same time, the screw is passed through from under the top plate (not shown) and tightened against the vertical screw hole 14. Then, the large diameter portion 3a of the hot water supply pipe 3 is inserted into the first enlarged diameter portion 12b of the connecting member 10 from under the top plate, and the upper end surface 3a3 is brought into contact with the fourth stage portion 12d, and the large diameter portion 4a of the water supply pipe 4 is inserted into the first enlarged diameter portion 11b of the connecting member 10, and the upper end surface 4a3 is brought into contact with the fourth stage portion 11d. In this state, when the plate member 40 is inserted into the slit portion 23 of the connecting member 10 from the side of the contact surface portion 44, each side surface portion 46 slides with respect to the radially inner surface of each side column portion 23d, and the left and right outer edge surfaces of each small U-shaped notch portion 43 slide with respect to the left and right direction surfaces of each guide column portion 23e. At this time, at the same time, the left and right outer edge surfaces of each large U-shaped notch portion 42 of the plate member 40 slide with respect to the outer diameter surfaces of the small diameter portions 3b and 4b of the hot water supply pipe 3 and the water supply pipe 4, and the peripheral upper surface portions of each large U-shaped notch portion 42 of the plate member 40 slide with respect to the second stage portions 3a4 and 4a4 of the hot water supply pipe 3 and the water supply pipe 4. Then, the forward movement stops when the contact surface portion 44 of the plate member 40 comes into contact with the rear side surface of the front column portion 23c of the connecting member 10. In this state, the hot water supply pipe 3 and the water supply pipe 4 are connected to the connecting member 10 while maintaining a watertight state, and the arc-shaped portion 45 of the plate member 40 coincides with the groove bottom portion of the lower ring member groove 21. Next, the upper ring member 17a is disposed in the upper ring member groove 17 of the connecting member 10, an O-ring is disposed in the upper O-ring groove 18 and the lower O-ring groove 20, and the lower ring member 21a is disposed in the lower ring member groove 21. In this state, the middle casing 32 with the discharge pipe 5 attached is placed on the connecting member 10 from above, and the upper casing 31 is placed on the connecting member 10 with the cartridge 6 placed thereon from above, and the female screw portion 31a of the upper casing 31 is tightened against the male screw portion 16 of the connecting member 10. Finally, the handle 7 is attached to the operation portion 61 of the cartridge 6 protruding from the upper casing 31.

[0024] As shown in FIGS. 1 to 3, the faucet 1 operates as follows. The water and hot water supplied from the hot water supply pipe 3 and the water supply pipe 4 enter the cartridge 6 through the hot water passage 12 and the water passage 11 of the connecting member 10, and the mixed water that is mixed and temperature-adjusted at the mixing ratio adjusted by the handle 7 passes through the mixing water passage 13 and the discharge pipe connecting portion 19 and is discharged from the tip of the discharge pipe 5.

[0025] The present embodiment configured as described above has the following effects. In the faucet 1, the hot water supply pipe 3 and the water supply pipe 4 are inserted into the hot water passage 12 and the water passage 11 of the connecting member 10, and by inserting the plate member 40 into the slit portion 23, the peripheral upper surface portions of the large U-shaped cutouts 42 of the plate member 40 are engaged with the second step portions 3a4 and 4a4, thereby being fixed to the connecting member 10. As a result, the hot water supply pipe 3 and the water supply pipe 4 can be easily attached to the connecting member 10. And the slit portion 23 is connected by a pair of left and right guide column portions 23e that connect the lower outer edge surface 23a and the upper outer edge surface 23b, and a pair of left and right small U-shaped cutouts 43 through which the pair of left and right guide column portions 23e pass are formed in the plate member 40. Thus, even if the hot water supply pipe 3 and the water supply pipe 4 are arranged near the axis A of the connecting member 10 and the strength balance in the direction of the axis A and the circumferential direction centered on the axis A is deteriorated due to the presence of the slit portion 23, the strength in the direction of the axis A and the circumferential direction centered on the axis A can be increased due to the presence of the pair of left and right guide column portions 23e. Also, when inserting the plate member 40 into the slit portion 23, since the left and right outer edge surfaces of each small U-shaped cutout 43 are in sliding contact with the left and right surfaces of each guide column portion 23e and are inserted, the direction in which the plate member 40 is inserted can be restricted.

[0026] Further, with the plate member 40 inserted into the slit portion 23 of the connecting member 10 and engaged with the second step portions 3a4 and 4a4 of the hot water supply pipe 3 and the water supply pipe 4, the middle casing 32 is attached so as to cover the connecting member 10 through the lower ring member groove 21. As a result, the plate member 40 is prevented from moving radially outward while being disposed in the slit portion 23, so that the detachment of the plate member 40 from the slit portion 23 can be prevented with a simple structure.

[0027] Furthermore, the hot water supply pipe 3 and the water supply pipe 4 are fixed to the connecting member 10 by the upper surface portions of the peripheral edges of the large U-shaped cutouts 42 of the plate member 40 engaging with the second-stage portions 3a4, 4a4 of the hot water supply pipe 3 and the water supply pipe 4. As a result, the hot water supply pipe 3 and the water supply pipe 4 can be fixed to the connecting member 10 with a simple structure in which the large-diameter portions 3a, 4a are provided in the hot water supply pipe 3 and the water supply pipe 4.

[0028] As described above, specific embodiments have been described. However, the present invention is not limited to their appearance and configuration, and various changes, additions, and deletions are possible without changing the gist of the present invention. For example, the following are examples.

[0029] 1. In the above embodiment, the guide post portion 23e is configured such that the horizontal cross-section has a substantially rectangular shape with the rear side chamfered into a circular shape. However, the present invention is not limited to this, and the horizontal cross-section may be configured as an oval shape or a rectangular shape.

[0030] 2. In the above embodiment, the plate member 40 is inserted into the slit portion 23 of the connecting member 10 and engages with the second-stage portions 3a4, 4a4 of the hot water supply pipe 3 and the water supply pipe 4, and the middle casing 32 is attached so as to cover the connecting member 10 via the lower ring member groove 21. However, the present invention is not limited to this, and the lower ring member groove 21 may be eliminated and the arc-shaped portion 45 of the plate member 40 may be directly covered with the middle casing 32.

[0031] The embodiments disclosed this time should be considered as illustrative in all respects and not restrictive. The scope of the present invention is shown not by the description of the above-described embodiments but by the claims, and it is intended that all changes within the meaning and scope equivalent to the claims are included.

Explanation of Reference Numerals

[0032] 1 faucet, 2 faucet body, 3 hot water supply pipe, 3a large-diameter part (enlarged diameter part), 3a3 upper end surface, 3a4 second-stage part, 3b small-diameter part, 4 water supply pipe, 4a large-diameter part (enlarged diameter part), 4a3 upper end surface, 4a4 second-stage part, 4b small-diameter part, 5 discharge pipe, 6 cartridge, 7 handle, 10 connecting member, 11 water supply path, 11a small-diameter part, 11b first enlarged diameter part, 12 hot water supply path, 12a small-diameter part, 12b first enlarged diameter part, 13 mixing water path, 23 slit part, 23a lower outer edge surface (both outer edge surfaces), 23b upper outer edge surface (both outer edge surfaces), 30 casing (outer cylinder member), 32 middle casing, 40 plate member, 41 notch opening, 42 large U-shaped notch, 43 small U-shaped notch (through hole), 44 contact surface part, 45 arc-shaped part, 46 side surface part, A axis (central axis)

Claims

1. A faucet having a substantially cylindrical connecting member with a hot water passage and a water passage therein, a cartridge that mixes the hot water supplied from the hot water passage and the water supplied from the water passage and discharges water, a hot water pipe connected to the hot water passage, and a water supply pipe connected to the water passage, wherein a slit extending in a direction perpendicular to the central axis of the cylinder is formed in the outer peripheral portion of the connecting member, with the hot water pipe and the water supply pipe inserted into the hot water passage and the water passage, the plate member inserted into the slit engages with a part of the hot water pipe and a part of the water supply pipe, thereby fixing the hot water pipe and the water supply pipe to the connecting member, columnar portions connecting both outer edge surfaces in the direction of the central axis are formed one by one in the slit corresponding to the hot water pipe and the water supply pipe, and through holes are formed in the plate member to slidably contact each columnar portion and pass through each columnar portion when the plate member is inserted into the slit.

2. The faucet according to claim 1, wherein an outer cylinder member is attached to cover the connecting member in the radial direction in a state where the plate member is inserted into the slit of the connecting member and engaged with a part of the hot water pipe and a part of the water supply pipe to prevent the plate member from moving outward in the radial direction.

3. The faucet according to claim 1 or claim 2, wherein a part of the hot water pipe and a part of the water supply pipe are the surfaces on the opposite sides of the ends of the hot water pipe in the enlarged diameter portion provided in the hot water pipe and the surfaces on the opposite sides of the ends of the water supply pipe in the enlarged diameter portion provided in the water supply pipe.

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