JP6473612B2 - Single lever faucet - Google Patents

Description

  The present invention relates to a single lever faucet that can discharge water, hot water and hot / cold mixed water (hereinafter simply referred to as mixed water) with a single lever handle.

This type of single lever faucet is disclosed in Patent Document 1.
As shown in FIGS. 9A and 9B, the single lever faucet of Patent Document 1 is provided with a lever 101 and a lever handle 102 that is connected to the lever 101 and operated by a user. It has been. Then, when the lever handle 102 is operated, water discharge is performed. A long hole 110 is formed in the lever 101, and an engagement pin 104 is inserted into the long hole 110 so as to be movable up and down. Both ends of the engaging pin 104 are in contact with the arcuate sliding surface 105 on the faucet body 111 side by the elastic force of the spring 106.

  For this reason, a frictional resistance is generated between the engaging pin 104 and the sliding surface 105 based on the elastic force of the spring 106. As a result, an appropriate resistance is given to the operation of the lever handle 102, the play of the lever handle 102 is suppressed, and a high-grade operation feeling is given. Further, when the lever handle 102 moves between the fully open position and the intermediate position in the water discharge state, the engaging pin 104 gets over the protrusion 107 on the sliding surface 105. Thus, the amount of water discharged can be recognized by the operator.

JP 2002-106005 A

  By the way, in the single lever faucet of Patent Document 1, a hole 103 for a spring 106 is formed in the lever 101 downward from the upper end surface of the lever 101, and the spring 106 is inserted therein. Then, a set screw 109 is screwed into a female screw 108 formed at the upper end of the hole 103, thereby preventing the spring 106 from coming out of the hole 103.

  Therefore, in the single lever faucet of Patent Document 1, after processing the lever 101, the hole 103 for the spring 106 is drilled, the internal thread 108 is threaded with respect to the inner peripheral surface of the hole 103, and the set screw 109 with respect to the internal thread 108 is used. And the lever 101 is manufactured and assembled. Moreover, since the set screw 109 is required, the number of parts increases.

  An object of the present invention is to provide a single lever faucet that is easy to manufacture and assemble and has a small number of parts.

  In order to achieve the above object, the present invention is configured such that when the lever handle is operated, the movable valve body is moved with respect to the fixed valve body via the lever, and water discharge is performed. A long hole is provided between both side surfaces of the lever, and an engagement pin is accommodated in the long hole so that the engaging pins can move in the extending direction of the long hole with both ends projecting from both side surfaces of the lever. The lever is provided with a spring for applying an elastic force toward the sliding surface formed in the faucet body with respect to the engaging pin, and between the engaging pin and the sliding surface by the elastic force of the spring. A single lever faucet that is provided with sliding resistance with respect to the operation of the lever handle. An opening for this accommodation hole is formed in the Characterized in that accommodates the spring.

  In the single lever faucet configured as described above, an accommodation hole for holding the spring can be formed simultaneously with the processing of the lever. Unlike the configuration of Patent Document 1, the hole for accommodating the spring is formed. Are formed after the lever has been processed, and a process of threading a female screw into the hole or attaching a set screw is not required, which facilitates manufacture and eliminates the need for a set screw.

  As described above, according to the present invention, in the single lever faucet, it is easy to manufacture, and the effects of reducing the number of parts and simplifying the configuration are exhibited.

Sectional drawing of a single lever faucet. FIG. 2 is a partially cut exploded perspective view of the single lever faucet of FIG. 1. The disassembled perspective view which shows the internal structure of a cartridge case, and parts related to a lever. (A)-(d) is a top view which shows the relationship between a fixed valve body and a movable valve body. Sectional drawing of a lever and a lever guide. The side view of a lever. FIG. 7 is a cross-sectional view taken along line 7-7 in FIG. Sectional drawing which shows the relationship between the engaging pin of a lever, and the sliding surface of a lever guide. (A), (b) is sectional drawing and side view which show a prior art example.

Hereinafter, embodiments of a single lever faucet embodying the present invention will be described with reference to the drawings.
As shown in FIGS. 1 and 2, the base 11 of the single lever faucet of this embodiment has a water supply passage 12 connected to a water supply source (not shown) and a hot water supply connected to a hot water supply source (not shown). A passage 13 and a water discharge passage 14 are formed. A cylindrical body 201 is attached to the outer periphery of the base portion 11 so as to be rotatable in a horizontal plane so as to correspond to the opening on the outer peripheral side of the water discharge passage 14. A water discharge pipe 20 is projected. Water, hot water, and mixed water from the water discharge passage 14 are discharged to the outside through the water discharge pipe 20.

  As shown in FIGS. 1 to 3, a cartridge case 15 is installed in the cover 10 at the top of the base 11. The cartridge case 15 is configured by assembling a lower case 17, an intermediate case 18 and an upper case 19. In FIG. 3, the intermediate case 18 is not shown. The lower case 17 is formed with an opening 16 (only the opening 16 of the water supply passage 12 is shown) that forms the upper part of the water supply passage 12, the hot water supply passage 13, and the water discharge passage 14. The lower case 17 accommodates a fixed valve body 21 and a movable valve body 22 that is slidable on the upper surface of the fixed valve body 21. A water supply hole 23 that communicates with the water supply passage 12, a hot water supply hole 24 that communicates with the hot water supply passage 13, and a water discharge hole 25 that communicates with the water discharge passage 14 are formed in the fixed valve body 21. The movable valve body 22 is formed with a mixing chamber 26 that always communicates with the water discharge hole 25.

  Then, as illustrated in FIGS. 4A to 4D, the water stop position where the mixing chamber 26 does not communicate with either the water supply hole 23 or the hot water supply hole 24 due to the movement of the movable valve body 22 (FIG. 4 ( a)), a water discharge position (FIG. 4B) communicating with the water supply hole 23, a hot water discharge position communicating with the hot water supply hole 24 (FIG. 4C), and both the water supply hole 23 and the hot water supply hole 24 It is arrange | positioned in the mixed water discharge position (FIG.4 (d)) connected to.

  As shown in FIG. 4B, at the water discharge position of the movable valve body 22, water from the water supply passage 12 is discharged from the water discharge pipe 20 through the water supply hole 23, the mixing chamber 26, the water discharge hole 25, and the water discharge passage 14. Is done. 4C, hot water from the hot water supply passage 13 is discharged from the water discharge pipe 20 through the hot water supply hole 24, the mixing chamber 26, the water discharge hole 25, and the water discharge passage 14. As shown in FIG. Furthermore, in the mixed water discharge position of the movable valve body 22 shown in FIG. 4D, the water from the water supply passage 12 and the hot water from the hot water supply passage 13 are supplied with the water supply hole 23, the hot water supply hole 24, the mixing chamber 26, and the water discharge hole 25. Then, the water is mixed and discharged from the water discharge pipe 20 through the water discharge passage 14.

  In these cases, the degree of communication of the mixing chamber 26 with respect to the water supply hole 23 and the hot water supply hole 24 is changed in accordance with the amount of movement of the movable valve body 22, and the water discharge amount is adjusted. Further, the ratio of the water supply hole 23 and the hot water supply hole 24 corresponding to the position of the movable valve body 22 at the mixed water discharge position is changed to adjust the temperature of the mixed water.

  As shown in FIGS. 1 and 3, a lid member 30 is fixed to the upper surface of the movable valve body 22. A shaft support 31 is provided inside the upper part of the cartridge case 15 so as to be rotatable in a horizontal plane around the central axis of the cartridge case 15.

  A lever 32 is supported inside the shaft support 31 via a support shaft 33 so as to be rotatable in a vertical plane. The lower end of the lever 32 is inserted and connected so as to be tiltable to a connecting portion 301 having a rectangular tube shape on the upper surface of the lid member 30. A lever handle 34 is fixed to the upper end of the lever 32. For this reason, the lever 32 and the lever handle 34 can be rotated up and down about the support shaft 33, and can be operated to rotate left and right within the horizontal plane around the center axis of the cartridge case 15 together with the shaft support 31. Is possible.

  Therefore, by operating the lever handle 34, the movable valve body 22 is moved back and forth and right and left on the fixed valve body 21 via the lever 32 and the lid member 30, and is rotated so that the movable valve body 22 is shown in FIG. ) To (d).

  As shown in FIGS. 1, 5 and 8, a lever guide 35 is provided on the upper case 19 so as to be rotatable in a horizontal plane. The lever guide 35 is formed with a guide groove 36 for the lever 32 to protrude upward. Therefore, the lever guide 35 is rotated in the horizontal plane together with the lever 32. An arcuate sliding surface 37 is formed on both upper surfaces of the guide groove 36, a protrusion 38 is formed on the sliding surface 37, and a wall-like shape is formed on the outer periphery on both sides of the sliding surface 37. A restricting portion 39 is formed.

  As shown in FIGS. 6 and 7, a narrow hole 40 extending in the vertical direction is provided between the left and right side surfaces of the lever 32, and a wide and vertically extending receiving hole 41 is provided in the upper part. A protrusion 411 is formed on the inner surface of the upper end of the accommodation hole 41 so as to be continuous with the long hole 40. Therefore, the long hole 40 and the accommodation hole 41 are opened on the left and right side surfaces of the lever 32.

  An engagement pin 42 is inserted into the long hole 40 so as to be movable up and down in the extending direction of the long hole 40, and both end portions thereof protrude to the outside, and the protruding portions are positioned on the sliding surface 37. A coil spring 43 is accommodated in the accommodation hole 41, and an upper end thereof is externally fitted to the protrusion 411 and a lower end thereof is pressed against the engagement pin 42. The engagement pin 42 is brought into contact with the sliding surface 37 with an appropriate pressure by the coil spring 43.

  A shaft hole 44 through which the support shaft 33 passes is formed in the lower portion of the lever 32. Stoppers 45 are formed on both front and rear sides of the lever 32, and the rotation range around the support shaft 33 of the lever 32 is restricted by the contact between the stopper 45 and the shaft support 31.

  The lever 32 is formed by sintering stainless steel. A chamfer 46 made of an inclined surface is formed at the corner of the entire lever 32 including the periphery of the protrusion 411 and the inner periphery of the shaft hole 44.

  The coil spring 43 is formed in a rectangular tube shape as a whole. The outer dimension of the coil spring 43 in the winding diameter direction is formed to be smaller than the thickness of the lever 32 so that the coil spring 43 does not protrude from the openings on both sides of the accommodation hole 41 to the outside.

  When the coil spring 43 is assembled, the coil spring 43 is inserted into the accommodation hole 41 from the side opening of the accommodation hole 41 of the lever 32, the upper end of the coil spring 43 is externally engaged with the protrusion 411, and the lower end is the engagement pin 42. Pressure contacted. In this way, the coil spring 43 can be prevented from coming out of the accommodation hole 41, and the engagement pin 42 is brought into contact with the sliding surface 37 with an appropriate pressure by the elastic force of the coil spring 43.

  Then, the engaging pin 42 is slid in a state where an appropriate frictional resistance is applied by the coil spring 43 while being guided by the restricting portion 39 on the sliding surface 37 by the rotation operation of the lever handle 34 in the vertical direction. A high-class operation feeling can be obtained without any difficulty. Further, when the lever handle 34 passes between the maximum amount of water discharge position and the intermediate amount of water discharge position, the click feeling is generated by the engagement pin 42 getting over the protrusion 38, so that the user can Can be recognized.

The above embodiment has the following effects.
(1) A receiving hole 41 for receiving the coil spring 43 is provided between the left and right side surfaces of the lever 32. A projection 411 for stopping the coil spring 43 from coming off is formed at the upper end of the accommodation hole 41. Therefore, the housing hole 41 and the protrusion 411 for holding the coil spring 43 can be formed simultaneously with the processing of the lever 32 by the mold for sintering the lever 32. Therefore, unlike the configuration of Patent Document 1, the process of forming the receiving hole 41 after the processing of the lever 32, screwing after the molding, or attaching the set screw is not required, and the manufacturing is easy. Become.

  (2) Since the outer dimension in the winding diameter direction of the coil spring 43 is smaller than the thickness of the lever 32, the coil spring 43 can be prevented from protruding outward from the side surface of the lever 32. For this reason, it is possible to prevent the coil spring 43 and the lever handle 34 from interfering with each other when the lever handle 34 is assembled to the lever 32, and it is possible to avoid the coil spring 43 from interfering with the assembly of the lever handle 34.

  (3) Since the chamfer 46 is processed at the opening edge of the accommodation hole 41, the coil spring 43 can be smoothly inserted into the accommodation hole 41, and the assembly of the coil spring 43 is facilitated.

  (4) Since the coil spring 43 has a rectangular tube shape, the outer surface of the coil spring 43 is disposed along the inner surface of the accommodation hole 41. Therefore, the coil spring 43 is stably held in the accommodation hole 41.

The present invention is not limited to the above embodiment, and may be embodied in the following manner.
-Instead of the rectangular cylindrical coil spring 43, use a general cylindrical coil spring.

The lever 32 is formed in a circular cross section, that is, in a cylindrical shape.
The chamfer 46 of the lever 32 is formed by an arc surface.

  DESCRIPTION OF SYMBOLS 21 ... Fixed valve body, 22 ... Movable valve body, 32 ... Lever, 34 ... Lever handle, 37 ... Sliding surface, 40 ... Long hole, 41 ... Housing hole, 42 ... Engagement pin, 43 ... Coil spring, 46 ... Chamfer, 411 ... projection.

Claims (5)

By operating the lever handle, the movable valve body is moved with respect to the fixed valve body via the lever, and the water discharge is performed.
A long hole is provided between both side surfaces of the lever, and an engagement pin is accommodated in the long hole so that the both end portions protrude from both side surfaces of the lever so as to be movable in the extending direction of the long hole.
The lever is provided with a spring for applying an elastic force toward the sliding surface formed in the faucet body with respect to the engaging pin, and the lever is interposed between the engaging pin and the sliding surface by the elastic force of the spring. A single lever faucet designed to give sliding resistance to the operation of the handle,
A receiving hole is formed between the both side surfaces of the lever continuously with the elongated hole, and openings are formed on both side surfaces of the lever, into which the spring can be inserted, respectively. A single lever faucet in which the spring is accommodated in the accommodation hole.
2. The single lever faucet according to claim 1, wherein a protrusion is provided at an end of the inner surface of the accommodation hole, and one end of a spring is engaged with the protrusion. The single lever faucet according to claim 1 or 2, wherein the lever is formed by sintering. The single lever faucet as described in any one of Claims 1-3 which chamfered the periphery of the said accommodation hole. The single lever faucet according to any one of claims 1 to 4, wherein the spring is constituted by a rectangular cylindrical coil spring.