JP2015004407A - Cartridge for single lever combination faucet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cartridge for single lever combination faucet in which the number of components of a click mechanism part provided at a movable side member is reduced, and which does not require miniaturization of components and troublesome assembly work.SOLUTION: A cartridge 3 includes a click mechanism part 31 for imparting a click feeling at a predetermined position in a movement direction of a lever 7. The click mechanism part 31 has: a pressing body 32 provided at a movable valve body 5 and moving while being in contact with a part 37 to be pressed comprising an inner peripheral surface of a case 8; and a projection part 38 provided in a movement range of the pressing body 32. The part 37 to be pressed is configured by an inner surface of an elastic body 36 which is accommodated in an accommodation recess place 89 formed on an inner peripheral surface of the case 8 in a state where a gap 90 is interposed on the back surface side between itself and a bottom surface of the accommodation recess place 89, and the projection part 38 is provided at one part on the inner surface of the elastic body 36.

Description

  The present invention relates to a single lever mixing faucet cartridge.

  Patent Document 1 discloses a conventional single lever mixing faucet cartridge. The cartridge changes the flow rate and temperature of hot water discharged from the water outlet (hereinafter referred to as water discharge). The lever handle is connected to the lever of the cartridge. Thus, the user can adjust the flow rate of the water discharge by rotating the lever handle in the vertical direction, and can adjust the temperature of the water discharge by rotating the lever handle in the left-right direction.

  This single lever mixing faucet is provided with a rotating click mechanism. This rotating click mechanism gives the user a click feeling at a predetermined position in the direction of movement of the lever handle when adjusting the temperature of the discharged water.

  The rotating click mechanism includes a grooved ring having an arc cross section provided along the inner peripheral surface of the cartridge case, and a lever guide disposed inside the grooved ring. The lever guide is connected to the lever handle. The lever guide is provided concentrically with the grooved ring, and is configured to rotate about the center in conjunction with the rotation of the lever handle in the left-right direction.

  The lever guide is provided with a rotating click member and a leaf spring. The leaf spring elastically biases the rotating click member toward the inner peripheral surface of the grooved ring. When the lever guide rotates, the rotating click member collides with the side surface of the groove provided on the inner peripheral surface of the grooved ring, and then gets over the side wall of the groove. Thereby, the rotation click mechanism can give a user a click feeling.

JP 2008-248540 A

  By the way, in the rotation click mechanism of the single lever mixing faucet described in Patent Document 1, the rotation click member provided on the movable side member is urged by the leaf spring, and the inner peripheral surface of the case which is the fixed side member It is pressed against. For this reason, it is necessary to accommodate the rotating click member and the leaf spring in the movable side member accommodated inside the fixed side member, and it is necessary to downsize parts such as the rotating click member and the leaf spring. These assembly operations were also troublesome.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to reduce the number of parts of the click mechanism portion provided in the movable member, and to reduce the size of the parts and troublesome assembly work. The object is to provide a cartridge for a single lever mixing faucet.

  The single lever mixing faucet cartridge of the present invention includes a fixed valve body having a water supply port and a hot water supply port, a movable valve body that slides on the fixed valve body and changes the opening area of the water supply port and the hot water supply port, A lever that is connected to an operation handle of the mixing faucet and moves the movable valve body; and a case that houses the fixed valve body and the movable valve body therein, and the lever is moved in a first direction. A single lever configured to adjust the flow rate of water discharged from the mixing tap and to adjust the temperature of water discharged from the mixing tap by moving the lever in a second direction crossing the first direction. A cartridge used for a mixing faucet, wherein the cartridge provides a click feeling at a predetermined position in the moving direction when the lever is moved in the second direction. The click mechanism portion is provided on the movable valve body and moves while abutting against a pressed portion made of an inner peripheral surface of the case, and the click mechanism portion is provided in the movement range of the pressure body. A protrusion projecting from the inner peripheral surface of the housing, and the pressed portion is provided between the housing recess formed on the inner peripheral surface of the case and the bottom surface of the housing recess on the back side. It is comprised by the inner surface of the elastic body accommodated in the state which interposed the clearance gap, The said projection part is provided in a part of said inner surface of the said elastic body, It is characterized by the above-mentioned.

  In the single lever mixing faucet cartridge according to the present invention, the elastic body is housed in the housing recess formed on the inner peripheral surface of the case, so the elastic body is provided on the movable side member housed inside the fixed side member. There is no need, the number of parts provided on the movable member is reduced, and miniaturization of parts and troublesome assembly work are not required.

It is sectional drawing of the cartridge of this embodiment. It is a partially broken sectional view of the single lever mixing faucet of this embodiment. It is a disassembled perspective view of the cartridge of this embodiment. It is a partial exploded perspective view of the cartridge of this embodiment. (A)-(c) is principal part sectional drawing for demonstrating the operation | movement at the time of the click feeling generation | occurrence | production of the cartridge of this embodiment.

  The present invention includes a fixed valve body 4 having a water supply port 86 and a hot water supply port 87, and a movable valve body 5 that slides on the fixed valve body 4 and changes the opening area of the water supply port 86 and the hot water supply port 87. The lever 7 is connected to the operation handle 2 of the mixing faucet and moves the movable valve body 5, and the case 8 accommodates the fixed valve body 4 and the movable valve body 5 therein. The lever 7 is moved in the first direction to adjust the flow rate of water discharged from the mixing tap, and the lever 7 is moved in the second direction crossing the first direction to discharge water from the mixing tap. It is the cartridge 3 used for the single lever mixing faucet comprised so that the temperature of this might be adjusted. The cartridge 3 includes a click mechanism 31 that gives a click feeling at a predetermined position in the moving direction when the lever 7 is moved in the second direction. The click mechanism portion 31 is provided on the movable valve body 5 and moves while abutting against a pressed portion 37 formed from the inner peripheral surface of the case 8, and the inner periphery of the case 8 provided in the movement range of the pressing body 32. And a protrusion 38 protruding from the surface. The pressed portion 37 is accommodated in a housing recess 89 formed on the inner peripheral surface of the case 8 with a gap 90 interposed between the back surface and the bottom surface of the housing recess 89. It is comprised by the inner surface. A protrusion 38 is provided on a part of the inner surface of the elastic body 6.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

  The single lever mixing faucet (hereinafter referred to as a mixing faucet) of this embodiment is attached to a kitchen apparatus of a kitchen, for example. As shown in FIG. 2, the mixing faucet includes a faucet body 1, an operation handle 2, and a cartridge 3. The mixing faucet is configured such that the user can adjust the flow rate and temperature of discharged hot water (hereinafter referred to as water discharge) by operating the operation handle 2.

  In addition, the definition of the direction in this embodiment is determined based on the installation state of a mixing faucet. That is, the main body part 11 side of the mixing faucet is defined as the rear side, and the discharge port 13 side is defined as the front side. Moreover, the left-right direction is determined based on the state where the user faces the mixing faucet. Specifically, the front side in FIG. 2 is defined as the right direction and the back side of the page is defined as the left direction.

  The faucet body 1 includes a body portion 11 and a spout portion 12 protruding from the body portion 11. The main body 11 is formed in a cylindrical shape whose axis is parallel to the vertical direction. The spout part 12 protrudes forward from the main body part 11. At the tip of the spout portion 12, a discharge port 13 that opens obliquely downward and forward is provided.

  A cartridge housing portion 14 is provided inside the main body portion 11. The cartridge housing part 14 is provided with a water supply pipe connection part 15, a hot water supply pipe connection part (not shown), and a water discharge pipe connection part 16. A water supply pipe 91 connected to a water supply source is connected to the water supply pipe connection portion 15 in communication. In addition, a hot water supply pipe (not shown) connected to a hot water heater (not shown) is connected to the hot water supply pipe connection portion. A water discharge pipe 92 is connected to the water discharge pipe connecting portion 16 in communication. The water discharge pipe 92 connects the water discharge pipe connection portion 16 and the discharge port 13 in communication.

  In addition, the spout part 12 of the faucet body 1 may be provided so as to be rotatable in the left-right direction with respect to the body part 11. Moreover, you may be comprised by the shower head from which the front-end | tip of the spout part 12 can be pulled out freely.

  The cartridge 3 is accommodated and arranged in the faucet body 1 (cartridge accommodating portion 14). As shown in FIG. 3, the cartridge 3 is provided with a water supply port 86, a hot water supply port 87, and a mixed water outlet 88. When the cartridge 3 is housed and arranged in the cartridge housing portion 14, the water supply port 86 is connected to the water supply pipe connection portion 15, the hot water supply port 87 is connected to the hot water supply pipe connection portion, and the hot water outlet is connected to the water discharge pipe connection portion. 16 is connected in communication. That is, the water supply pipe 91, the hot water supply pipe, and the water discharge pipe 92 are connected to the cartridge 3 in communication. Further, the cartridge 3 has a valve mechanism, thereby changing the flow rate and temperature of the water discharged from the mixing faucet. As shown in FIG. 3, the cartridge 3 includes a fixed valve body 4, a movable valve body 5, a lever 7 that moves the movable valve body 5, and a case 8.

  The case 8 accommodates the fixed valve body 4 and the movable valve body 5 therein. The case 8 includes an upper case 80 and a base 85. The upper case 80 includes a body portion 82 having a lower opening 81 and an upper opening portion 84. The trunk portion 82 includes an upper surface portion 83 that extends radially inward at the upper end. The upper opening 84 is formed in a cylindrical shape and protrudes upward from the inner peripheral edge of the upper surface portion 83.

  The base 85 is attached so as to close the lower opening 81 of the upper case 80. The base 85 is provided with a water supply port 86, a hot water supply port 87, and a mixed water outlet 88. These water supply port 86, hot water supply port 87, and mixed water outlet 88 pass through the base 85.

  An outer packing 93 is disposed between the lower surface of the base 85 and the bottom surface (not shown) of the cartridge storage portion 14. The outer packing 93 surrounds each opening of the water supply port 86, the hot water supply port 87, and the mixed water outlet 88.

  The fixed valve body 4 includes an inner packing 41 and a fixed platen 42. The inner packing 41 is disposed between the upper surface of the base 85 and the lower surface of the fixed platen 42. Similar to the outer packing 93, the inner packing 41 surrounds the openings of the water supply port 86, the hot water supply port 87, and the mixed water outlet 88.

  The stationary platen 42 is provided with a water flow passage 43, a hot water flow passage 44, and a mixed water flow passage 45. Each of the water flow passage 43, the hot water flow passage 44, and the mixed water flow passage 45 passes through the stationary platen 42. When the fixed platen 42 is disposed above the base 85, the water passage 43 communicates with the water supply port 86, the hot water passage 44 communicates with the hot water supply port 87, and the mixed water flow passage 45 communicates with the mixed water outlet 88. To do.

  The upper surface of the fixed platen 42 is formed to be a flat surface. The movable valve body 5 abuts on the upper surface of the fixed platen 42 so as to slide in a watertight state. In addition, grease is applied between the fixed platen 42 and the movable valve body 5, so that the slidability between the fixed platen 42 and the movable valve body 5 can be enhanced, and the fixed platen 42. And water stop between the movable valve body 5 can also be achieved.

  The movable valve body 5 includes a movable platen 51, a sound deadening network 55, an O-ring 56, a disk cover 57, and a support body 62.

  The movable platen 51 is formed in a ring shape in plan view, and has a bottom surface 52 at the center. The bottom surface portion 52 is provided with an elongated communication opening 53. The communication opening 53 is connected to the water supply port 86, the hot water supply port 87, and the mixed water outlet 88 when the movable platen 51 moves on the fixed platen 42 (water supply state), or the water supply port 86 and the hot water supply port 87. And a state (water stoppage state) that is in communication with the mixed water outlet 88.

  Specifically, when a lever 7 described later is rotated around the shaft member 74 (moved in the first direction), the movable platen 51 moves linearly on the fixed platen 42 via the disc cover 57. . Then, the communication opening 53 of the movable platen 51 gradually changes the total area of the opening while maintaining the opening ratio between the water supply port 86 and the hot water supply port 87. Thereby, the flow rate of the hot water flowing out from the mixed water outlet 88 is continuously changed, and the water flow state and the water stop state of the communication opening 53 are switched.

  Moreover, the movable board 51 changes the ratio of the communication area with the water supply port 86 and the hot water supply port 87 by rotating in the circumferential direction. In other words, the movable valve body 5 changes the opening area of the water supply port 86 and the hot water supply port 87 by sliding on the fixed valve body 4. Thereby, the ratio of the supplied hot water and water is changed, and the temperature of the mixed hot water is changed.

  In addition, a mixing space 54 for mixing hot and cold water is provided above the bottom surface 52 of the movable platen 51. The mixing space 54 is covered with a disc cover 57, whereby a hot and cold mixing unit 65 (see FIG. 1) is formed. The hot water mixing unit 65 mixes the water supplied from the water supply port 86 and the hot water supplied from the hot water supply port 87, and causes the mixed hot water to flow out toward the mixed water outlet 88.

  The O-ring 56 is disposed between the movable platen 51 and the disc cover 57. Further, the silencing net 55 is arranged so as to cover the communication opening 53 from above the bottom surface portion 52.

  A disk cover 57 is fixed above the movable platen 51. A recess 58 through which the lower end of the lever 7 is inserted is formed on the upper surface of the disc cover 57. The disc cover 57 moves linearly in one direction by following the movement of the lower end of the lever 7. When the disc cover 57 moves linearly in one direction, the movable platen 51 linearly moves on the fixed platen 42 in the same direction.

  The disc cover 57 is provided with a convex portion 59. A slide member 60 is provided on the lower surface of the support 62 so as to be slidable in a direction perpendicular to the moving direction of the disc cover 57. The slide member 60 is attached to the lower surface of the support body 62 via a leaf spring 61. As a result, the slide member 60 slides elastically in a direction perpendicular to the moving direction of the disc cover 57.

  When the disc cover 57 moves linearly in one direction, the convex portion 59 comes into contact with the slide member 60 at a predetermined position in the moving direction of the disc cover 57. When the disc cover 57 is further moved in the same direction from this state, the slide member 60 slides elastically, and the convex portion 59 gets over the slide member 60. Thereby, for example, at the position where the flow rate of the discharged water is appropriate, it is possible to give a sense of click to the user operating the lever 7 at the same time.

  The support body 62 is disposed above the disk cover 57. The support 62 is linearly movable in one direction with respect to the disc cover 57, but is configured not to move relative to the vertical axis (circumferential direction). As a result, when the support body 62 rotates in the circumferential direction, the disk cover 57 and the movable platen 51 rotate in accordance with the rotation.

  The support body 62 includes a lever insertion port 63 and a shaft insertion hole 64. The lever insertion port 63 is formed in a rectangular shape in plan view. The lever 7 is inserted into the lever insertion port 63 from above. A shaft member 74 is inserted into the shaft insertion hole 64. The shaft member 74 rotatably supports the lever 7.

  The lever 7 has a length in the vertical direction. An action portion 71 is provided at the lower end of the lever 7 in the length direction. A fixing portion 72 for connecting to the operation handle 2 is provided at the upper end portion of the lever 7 in the length direction. A pivot hole 73 for inserting the shaft member 74 is provided between the fixed portion 72 and the action portion 71.

  As described above, the lever 7 is pivotally supported by the support body 62 via the shaft member 74 so as to be rotatable. Here, the rotation direction of the lever 7 around the shaft member 74 is defined as the first direction. Further, the circumferential direction around the vertical axis is defined as the second direction. Therefore, the second direction intersects the first direction.

  When the lever 7 is moved in the first direction (that is, when the lever 7 is rotated around the shaft member 74), the action portion 71 moves in a direction opposite to the direction in which the fixing portion 72 moves. Then, the disc cover 57 follows the action portion 71 and linearly moves in one direction, and the movable platen 51 moves linearly on the fixed platen 42. Thereby, the flow volume of water discharge can be changed.

  Further, when the lever 7 is moved in the second direction (that is, when the lever 7 is rotated around the vertical axis), the support body 62 rotates in the second direction, and the disc cover 57 and the movable platen 51 follow the same. It rotates on the fixed platen 42 in the circumferential direction. Thereby, the hot water temperature of water discharge can be changed.

  As shown in FIG. 2, the cartridge 3 having such a configuration is installed in the faucet body 1 by being screwed into the fixing nut 17 from above while being disposed in the cartridge housing portion 14. . The fixing nut 17 is screwed into a female thread portion provided on the inner peripheral surface of the upper opening of the main body portion 11.

  The operation handle 2 is connected to the lever 7 of the cartridge 3 via a fixing tool 21. Thereby, when the operation handle 2 is moved in the vertical direction, the lever 7 is moved in the first direction. Further, when the operation handle 2 is moved in the left-right direction, the lever 7 moves in the second direction. Therefore, the user can adjust the flow rate of the water discharge by moving the operation handle 2 in the vertical direction, and can adjust the temperature of the water discharge by moving the operation handle 2 in the left-right direction.

  As described above, when the user moves the operation handle 2 in the vertical direction (specifically upward), the mixing faucet of this embodiment feels resistance to the user at a position where the flow rate of water discharge is appropriate. Let If the operation handle 2 is further operated upward from this state, a click feeling is given to the user. Thereafter, the flow rate of the water discharged from the mixing tap becomes maximum.

  In addition, the mixing faucet of the present embodiment is configured to give a click feeling to the user at a predetermined position in the left-right direction even when the user moves the operation handle 2 in the left-right direction. That is, the mixing faucet of the present embodiment includes a click mechanism unit 31 that gives a click feeling at a predetermined position in the moving direction when the operation handle 2 is moved in the left-right direction.

  The click feeling provided by the click mechanism unit 31 is set so as to occur at a boundary portion between a range in which hot water is discharged and a range in which water is discharged, for example, when the operation handle 2 is operated in the left-right direction. As shown in FIG. 3, the click mechanism portion 31 includes a pressing body 32, a pressed portion 37, and a protruding portion 38.

  As shown in FIG. 5, the pressing body 32 is disposed so as to contact the inner peripheral surface of the upper opening 84 of the case 8. In this embodiment, the pressing body 32 is constituted by a spherical member as shown in FIGS. The shaft member 74 is provided with a housing recess 75 on one end face in the axial direction. In the housing recess 75, the pressing body 32 is housed and disposed inside the housing recess 75. The pressing body 32 is made of, for example, a resin such as a fluororesin, stainless steel, or the like.

  A concave portion 66 is provided on the outer surface of the support body 62 of the movable valve body 5. A pressing body 32 is disposed inside the recess 66. In other words, the pressing body 32 is provided on the movable valve body 5. Further, a support protrusion 67 protruding upward is provided on the lower surface of the recess 66. The pressing body 32 is placed on the support protrusion 67. The support protrusion 67 is formed in an arc shape when viewed from the front. Thereby, it is comprised so that the friction with the support protrusion 67 and the press body 32 may be reduced.

  The back surface of the recess 66 is curved so as to be positioned on the back side toward the center of the recess 66 in the horizontal cross section. The above-described shaft insertion hole 64 is provided on the inner surface. The shaft insertion hole 64 is disposed at a location corresponding to the approximate center of the pressing body 32 in the vertical direction.

  The pressed portion 37 is a place where the pressing body 32 on the inner peripheral surface of the case 8 is in pressure contact, and in this embodiment, the elastic body 36 stored in the receiving recess 89 formed on the inner peripheral surface of the upper case 80. Consists of. The housing recess 89 is formed in a part of the upper case 80 in the circumferential direction, and is a recess deeper than the other part of the inner peripheral surface of the upper case 80 by a predetermined depth. The elastic body 36 is housed in the housing recess 89, and its inner surface forms an inner peripheral surface that becomes the pressed portion 37. The elastic body 36 is accommodated in a state in which a gap 90 is interposed between the elastic body 36 and the bottom surface of the accommodation recess 89 on the back side in a state where the elastic body 36 is not pressed by the pressing body 32. A protrusion 38 is provided on a part of the inner surface of the elastic body 36.

  As shown in FIG. 5, the protrusion 38 protrudes from the inner peripheral surface of the upper opening 84 of the case 8 toward the center. The protruding portion 38 is provided within the moving range of the pressing body 32 that moves along the inner peripheral surface of the case 8.

  When the user moves the operation handle 2 in the left-right direction and the lever 7 is moved in the circumferential direction (that is, the second direction), the support body 62 moves in the circumferential direction. Then, the pressing body 32 rotates while contacting the inner peripheral surface of the case 8 (FIG. 5A). When the user continues to operate the operation handle 2 in the same direction, the pressing body 32 comes into contact with the protrusion 38. As a result, the click mechanism unit 31 gives a sense of resistance to the user at a predetermined position in which the operation handle 2 moves in the left-right direction.

  Thereafter, when the user continues to operate the operation handle 2 in the same direction, the pressing body 32 presses the protrusion 38 while rotating. When the protrusion 38 is pressed by the pressing body 32, a gap 90 serving as a bending allowance is formed on the back side of the elastic body 6, so that the elastic body 6 is bent backward and the protrusion 38 is also behind. Moving. Thereby, the pressing body 32 gets over the projection part 38 (FIG.5 (b)).

  Further, at the moment when the pressing body 32 gets over the protruding portion 38, the pressing body 32 collides with the pressed portion 37 vigorously (FIG. 5C). Accordingly, the click mechanism unit 31 can not only give a click feeling to the user but also generate a click sound.

  Thus, according to the cartridge 3 of the present embodiment, the elastic body 36 is accommodated in the accommodation recess 89 formed in the inner peripheral surface of the case 8. For this reason, it is not necessary to provide the elastic body 6 in the movable side member (the support body 62 in this embodiment) accommodated inside the fixed side member (case 8), and the number of parts provided in the movable side member is reduced. There is no need for downsizing of parts or troublesome assembly work.

DESCRIPTION OF SYMBOLS 1 Water faucet body 13 Discharge port 14 Cartridge storage part 2 Operation handle 3 Cartridge 31 Click mechanism part 32 Press body 36 Elastic body 37 Pressed part 38 Protrusion part 4 Fixed valve body 42 Fixed board 5 Movable valve body 51 Movable board 53 Communication opening 57 disc cover 62 support 63 lever insertion port 64 shaft insertion hole 66 recess 67 support projection 7 lever 74 shaft member 75 receiving recess 8 case 80 upper case 84 upper opening 85 base 89 receiving recess 90 gap

Claims (1)

A fixed valve body having a water supply port and a hot water supply port;
A movable valve body that slides on the fixed valve body and changes an opening area of the water supply port and the hot water supply port;
A lever connected to the operation handle of the mixing faucet to move the movable valve body;
A case for accommodating the fixed valve body and the movable valve body inside,
The lever is moved in a first direction to adjust the flow rate of water discharged from the mixing tap, and the lever is moved in a second direction crossing the first direction to discharge water from the mixing tap. A cartridge used for a single lever mixing faucet configured to adjust the temperature of
The cartridge includes a click mechanism that provides a click feeling at a predetermined position in the moving direction when the lever is moved in the second direction.
This click mechanism is
A pressing body that is provided on the movable valve body and moves while abutting against a pressed portion made of an inner peripheral surface of the case;
A protrusion that is provided in a range of movement of the pressing body and protrudes from an inner peripheral surface of the case;
The pressed portion is configured by an inner surface of an elastic body that is housed in a housing recess formed on the inner peripheral surface of the case with a gap interposed between the back surface and the bottom surface of the housing recess. And
A cartridge for a single lever mixing faucet, wherein the protrusion is provided on a part of the inner surface of the elastic body.

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