JP2008185156A - Cylinder valve - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable increasing axial joint strength between a cylinder valve body and a valve shaft, which are mutually separated, and to facilitate the assembly, in a cylinder valve. <P>SOLUTION: A male fitting portion 90 of the valve shaft 38 is axially fitted into a female fitting portion 92 of the cylinder valve body 26 in the cylinder valve for assembling. An engaging ratchet 98 is provided in the female fitting portion 92 throughout the entire periphery projecting radially inward. An engaging projection 108 which projects radially outward, and engages with the valve shaft 38 in the escaping direction for the engaging ratchet 98 is provided in the outer periphery of the male fitting portion 90. The engaging ratchet 98 is engaged with the engaging projection 108, so that the cylinder valve body 26 and the valve shaft 38 are axially connected under a lock. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a cylinder type valve, and more particularly, to a cylinder type valve in which a cylindrical cylinder valve body and a valve shaft portion that rotationally drives the cylinder valve body are separate.

Conventionally, as a valve in a faucet or the like, a cylindrical cylinder valve body is rotatably fitted in an outer cylindrical valve case, and a water passage opening is formed through each peripheral wall. A cylinder type valve is used in which the position of the opening of the cylinder valve body relative to the opening of the valve case is changed by rotating the cylinder valve body at the shaft, thereby changing the opening of the water channel. .
Conventionally, in this type of cylinder type valve, the cylinder valve body and the valve shaft portion are constituted by a resin integrally molded product.

  However, in this case, the thickness of the cylinder valve body is inevitably increased, and the resin cylinder valve body is likely to be uneven on the outer surface, that is, the sealing surface, due to resin shrinkage during molding. Can easily be damaged by biting foreign matter such as sand, and if such a large uneven shape or damage is generated on the outer surface, this can cause water leakage and impair the reliability of the seal. Become.

Therefore, in the cylinder type valve, the cylinder valve body and the valve shaft portion are made separate, and the valve shaft portion is made of resin, while the cylinder valve body is made of metal and they are connected and assembled. Things have been proposed.
For example, the following Patent Document 1 discloses a cylinder valve body made of metal and a valve shaft portion made of resin and connected to each other.

In this case, the assembly structure (connection structure) of the cylinder valve body and the valve shaft portion becomes a problem.
In the thing disclosed in Patent Document 1, the assembly structure is an assembly structure as shown in FIG.
In the figure, reference numeral 200 denotes a cylindrical valve case, and the valve case 200 is provided with a water passage opening 202 that penetrates the peripheral wall inward and outward.
Reference numeral 204 denotes a cylindrical cylinder valve body that is rotatably fitted in the valve case 200 and is provided with a water passage opening 206 that penetrates the peripheral wall inward and outward, like the valve case 200.

Reference numeral 208 denotes a valve shaft portion made of resin, and a large-diameter male fitting portion 210 is provided at the shaft end portion. The male fitting portion 210 is a female fitting portion through an opening at the shaft end of the cylinder valve body 204. 212 is inserted.
Here, the female fitting portion 212 of the cylinder valve body 204 has a through-hole retaining hole 214 made of a small circular hole, and the male fitting portion 210 of the valve shaft portion 208 has a retaining protrusion 216 made of a circular small protrusion. The valve shaft portion 208 is prevented from being removed from the cylinder valve body 204 in the axial direction by providing the retaining holes 214 and the retaining protrusions 216.

  The cylinder valve body 204 is provided with a notch 217 for preventing rotation at the end of the shaft, and the valve shaft 208 is provided with a corresponding protrusion 218 for preventing rotation. The relative rotation between the valve shaft portion 208 and the cylinder valve body 204 is restricted by the fitting of the portion 218. That is, the cylinder valve body 204 and the valve shaft 208 are configured to rotate integrally.

However, in the case of this cylinder type valve, when the valve shaft 208 is pushed into the cylinder valve body 204 and the retaining protrusion 216 is fitted into the retaining hole 214, the retaining protrusion 216 made of a small resin protrusion breaks or is damaged. There is a problem that the valve shaft portion 208 and the cylinder valve body 204 are weakly coupled in the axial direction, and there is a problem that the assembly by pushing the valve shaft portion 208 into the cylinder valve body 204 is difficult.
Furthermore, when the cylinder valve body 204 is manufactured, a partial process for the retaining hole 214 is required as a separate process, which increases the number of processes for manufacturing the cylinder valve body 204, which increases the cost. There is a problem that becomes a factor.

JP 2004-11814 A

The present invention is based on the circumstances as described above, and it is possible to strengthen the coupling strength in the axial direction between the cylinder valve body and the valve shaft portion which are separate from each other, and to easily assemble them. The purpose is to provide a body.
Another object of the present invention is to make it easy to manufacture a cylinder valve body with a small number of steps.

  Thus, according to the first aspect of the present invention, a cylindrical cylinder valve body, a cylindrical valve case outside the cylinder valve body, and a separate cylinder valve body are connected to the cylinder valve body. A valve shaft portion that rotationally drives the cylinder valve body, the cylinder valve body is rotatably fitted in the valve case, and the cylinder valve body and the valve case are provided at predetermined locations in the circumferential direction. Openings for water passing through the peripheral wall are formed respectively. The rotation of the cylinder valve body relative to the valve case changes the position of the opening of the cylinder valve body relative to the opening of the valve case, thereby opening the water channel. In the cylinder type valve that changes the degree, the male fitting portion of the corresponding shaft end portion of the valve shaft portion is connected to the female fitting portion of the shaft end portion of the cylinder valve body. The female fitting part and the male fitting part are inserted in the axial direction through The female fitting portion is provided with an engagement claw that decreases in diameter toward the opening of the shaft end and protrudes radially inward over the entire circumference, On the outer peripheral surface of the male fitting portion, there are provided engaging projections that protrude radially outward and engage with the engaging claws in the axial direction and the withdrawal direction of the valve shaft portion, The cylinder valve body and the valve shaft portion are connected in an axially secured state by engagement with an engagement protrusion.

  According to a second aspect of the present invention, in the first aspect, the engagement protrusion has a longitudinal shape extending in the axial direction.

  According to a third aspect of the present invention, in any one of the first and second aspects, the male fitting portion is provided with the engagement protrusions at a plurality of locations in the circumferential direction.

  According to a fourth aspect of the present invention, in any one of the first to third aspects, the engaging protrusion has an inclined surface that forms an insertion guide when the engaging protrusion is inserted into the female fitting portion in the axial direction. It is provided in the front end side of the insertion direction.

  According to a fifth aspect of the present invention, the cylinder valve body according to any one of the first to fourth aspects, wherein the cylinder valve body is a drawn product obtained by drawing a metal plate material and punching the bottom portion, and the shaft end portion of the cylinder valve body Is curved radially inward with a uniform thickness toward the opening until reaching the opening at the shaft end, and the inside of the curved portion forms an engaging claw over the entire circumference, and the outer surface Has a curved surface that gradually decreases in diameter toward the opening until reaching the opening at the shaft end.

Effects and effects of the invention

  As described above, according to the present invention, the female fitting portion of the cylinder valve body is provided with the engagement claw that is reduced in diameter toward the opening at the shaft end and reaches the opening in a state of projecting radially inward over the entire circumference. An engagement protrusion projecting radially outward is provided on the outer peripheral surface of the male fitting portion of the valve shaft portion, and the cylinder valve body and the valve shaft portion are engaged by engagement of the engagement claws and the engagement protrusion. Are connected in an axially secured state.

In the present invention, since the engagement pawl on the cylinder valve body side is provided over the entire circumference, the engagement projection on the valve shaft side can be provided over the entire circumference, and it is applied to a predetermined place in the circumferential direction. In the case where the engagement protrusion is provided, it can be provided at an arbitrary position in the circumferential direction.
Further, such engagement protrusions are provided at a plurality of locations in the circumferential direction, and all of them can be engaged with the engagement claws.

  Thus, when the engagement protrusions are provided at a plurality of locations in the circumferential direction and are engaged with the engagement claws (claim 3), the engagement force between the cylinder valve body and the valve shaft portion That is, the axial pulling force can be increased, and the coupling strength in the axial direction between the cylinder valve body and the valve shaft portion can be increased.

  In the present invention, unlike the small circular retaining hole 214 shown in FIG. 18, an engagement claw that decreases in diameter toward the opening of the shaft end and is provided on the cylinder valve body side is provided. The projection can be provided in a longitudinal shape extending in the axial direction (Claim 2), and in this case, the axial strength of the engaging projection can be made high, and the cylinder valve body When the valve shaft portion is pushed in the axial direction to connect them, the engagement protrusion can be effectively prevented from being damaged such as breakage, and the engagement protrusion and the engagement claw in the axial direction can be effectively prevented. The engagement force can be increased, and the coupling strength between the cylinder valve body and the valve shaft portion can be increased.

  According to a fourth aspect of the present invention, an inclined surface that forms an insertion guide when the engagement protrusion on the valve shaft side is fitted in the female fitting part on the cylinder valve body side in the axial direction is provided on the distal end side in the insertion direction of the engagement protrusion. Accordingly, when the valve shaft portion is pushed into the cylinder valve body, the engagement protrusion can be easily fitted into the female fitting portion of the cylinder valve body by the insertion guide action of the inclined surface.

  In the present invention, the engagement pawl on the cylinder valve body side is provided over the entire circumference, and since the shape thereof is reduced toward the opening at the shaft end and reaches the opening, the engagement pawl is provided. The cylinder valve body can be easily constituted by a drawn product of a metal plate, specifically, a drawn product obtained by punching the bottom after drawing.

  In this case, the cylinder valve body is formed by simply drawing and punching the bottom, without punching the bottom, leaving a curved portion from the peripheral wall to the bottom, without the need for special processing to form the claw. In addition, the engaging claw can be formed, and the engaging claw can be provided on the cylinder valve body without performing a special process for forming the claw.

  Specifically, the inside of the curved portion from the peripheral wall to the bottom can be made into an engaging claw that protrudes radially inward over the entire circumference, and the outer surface is opened to the opening of the shaft end. A curved surface that gradually becomes smaller in diameter can be formed (claim 5).

  In this case, a cylinder valve body having engagement claws over the entire circumference can be manufactured at a low cost, and when the cylinder valve body is fitted into the valve case from the shaft end in the axial direction by the curved surface, the curved surface Due to the fitting guide action, the cylinder valve body can be easily fitted into the valve case and assembled.

Next, embodiments of the present invention will be described in detail with reference to the drawings.
In FIG. 1, 10 is a faucet (in this case, a single faucet) used for a washing machine faucet, a toilet faucet, etc., and is provided in a state of protruding forward from the wall W.

Reference numeral 12 denotes a main body of the water faucet 10 having a cylindrical shape. A water discharge portion 14 protrudes diagonally forward and downward from the main body 12, and a rotary handle 16 is provided at the front end side of the main body 12. .
Here, the handle 16 performs water discharge start, water stoppage, and water volume adjustment by rotating operation.
The handle 16 is provided with a protruding knob 18 at a predetermined position in the circumferential direction. Moreover, the water discharge part 14 is provided with the water discharge port 20 at the front-end | tip.

  As shown in FIGS. 2 and 3, the main body 12 is provided with a male screw pipe 21 at an axial end, and the male screw pipe 21 penetrates the wall W and protrudes to the back side. Then, a fixing nut (not shown) is screwed into the male threaded tube 21 protruding to the back side of the wall W, so that the body body 12 sandwiches the front side of the wall W with the large-diameter flange portion 23. It can be attached.

As shown in FIGS. 2 and 3, a cylinder type valve (hereinafter simply referred to as a valve) 24 for controlling the opening degree (including blocking or opening) of the water passage 22 is incorporated in the main body 14. .
The valve 24 includes a cylindrical cylinder valve body 26 that is operatively connected to the handle 16 and rotates integrally therewith, and a cylindrical valve case 28 outside the cylindrical valve body 26.

As shown also in FIG. 12, the cylinder valve body 26 is formed with a pair of water-passing openings 30 and 32 penetrating the peripheral wall inward and outward at two locations separated by 180 ° in the circumferential direction.
Similarly, on the valve case 28 side, openings 34 and 36 penetrating the peripheral wall of the valve case 28 inward and outward are provided at positions corresponding to the openings 30 and 32.

  In the case of the valve 24 of this example having the cylinder valve body 26 and the valve case 28, the cylinder valve body 26 is rotated by the operation of the handle 16 to change the position, and the openings 30 and 32 of the cylinder valve body 26 are formed in the valve case 28. The water channel 22 is completely opened in a state of being completely matched with the openings 34, 36, and water sent through the water channel 22 is discharged from the water outlet 20 to the outside.

Further, the cylinder valve body 26 is rotated to a position different from the above position by the operation of the one handle 16, and the openings 30 and 32 of the cylinder valve body 26 are completely inconsistent with the openings 34 and 36 of the valve case 28. Thus, the water channel 22 is blocked, and water discharge from the water discharge port 20 is stopped (water stoppage).
Furthermore, when the openings 30 and 32 of the cylinder valve body 26 and the openings 34 and 36 of the valve case 28 overlap with each other and the overlapping area changes, the amount of water discharged from the water outlet 20 to the outside is adjusted. The

A separate valve shaft portion 38 is assembled to the cylinder valve body 26 in an integrally rotated state. The cylinder valve body 26 and the valve shaft portion 38 form a valve body assembly 40. Yes.
As shown in FIGS. 4, 6, 10, and 14, a narrow ring groove 42 is formed in the valve shaft portion 38, and a retaining ring (here, an E ring) 44 is elastically formed therein. It is fitted in.

  In a state where the valve shaft portion 38 is inserted through the insertion hole 46 of the valve case 28 in the axial direction, the retaining ring 44 and a later-described large-diameter male fitting portion 90 of the valve shaft portion 38 are inward of the valve case 28. The valve shaft portion 38, that is, the valve body assembly 40 is fixed and assembled to the valve case 28 so that the flange portion 48 is sandwiched in the axial direction.

As shown in FIGS. 3, 4, 6, and 8, a female thread 50 is formed on the inner surface of the left end portion of the main body 12, and a fixing ring 54 having a male thread 52 on the outer surface is screwed into the female thread 50. It is.
Then, by screwing the main body 12 of the fixing ring 54, the valve 24 is fixed in the axial direction to the main body 12 via a positioning ring 56 described later, and is prevented from being removed.

4 and 5, reference numeral 58 denotes a shaft-like transmission member (made of resin here) that transmits the rotational operating force applied to the handle 16 to the valve shaft portion 38 to rotate integrally therewith. A male serration portion 60 is provided on the outer surface as shown in FIG.
On the other hand, as shown in FIG. 4, a female serration portion 62 is provided on the inner surface of the handle 18, and the female serration portion 62 is engaged with the male serration portion 60. The transmission member 58 rotates integrally with the handle 16 by the meshing of the male serration portion 60 and the female serration portion 62.

On the other hand, as shown in FIGS. 5 and 6, the transmission member 58 has a fitting hole 64 on the right end side in the figure, and is fitted to the valve shaft portion 38 in the fitting hole 64.
Under the fitted state, the fixing screw 68 is screwed into the female screw portion 66 formed at the center portion of the valve shaft portion 38, whereby the valve shaft portion 38 and the transmission member 58 are fastened in the axial direction. Yes.
As shown in FIG. 4, the valve shaft portion 38 has a substantially square shape at the left end in the drawing and is provided with a protrusion 70 protruding in a direction perpendicular to the shaft.

  On the other hand, the fitting hole 64 of the transmission member 58 fitted to this corresponds to the rectangular engagement portion 72 corresponding to the tip end portion of the valve shaft portion 38 and the protrusion 70 in the back portion on the left side in FIG. A concave groove 74 is provided, and the engaging portion 72 and the concave groove 74 are engaged with the quadrangular distal end portion of the valve shaft portion 38 and the protrusion 70 and are engaged in the rotational direction. Based on the engagement, the operation force in the rotational direction transmitted to the transmission member 58 is transmitted to the valve shaft portion 38 so that they rotate integrally.

  The positioning ring 56 is an annular member having a predetermined length in the axial direction as shown in FIGS. 4, 5, and 7, and has a diameter at two locations separated in the circumferential direction of the outer peripheral surface. It has the 1st positioning convex part 76 which protrudes to a direction outward, These 1st positioning convex parts 76 are as shown in FIG.4 and FIG.8 of the main body 12 of the faucet 10 as shown in FIG.4 and FIG.8. The position of the positioning ring 56 itself in the rotational direction with respect to the main body 12 is determined by fitting into and engaging with a corresponding positioning recess 78 formed on the inner surface.

The positioning ring 56 also has a pair of second positioning projections 80 projecting in the axial direction at the same circumferential position as the first positioning projection 76, which are shown in FIGS. 4 and 9. As shown in the figure, the position of the positioning ring 56 and the valve 24 in the rotational direction can be determined by fitting and engaging with the corresponding positioning recesses 82 of the valve 24, specifically the valve case 28. Yes.
That is, the assembly position in the rotational direction of the valve 24 with respect to the main body 12 is defined via the positioning ring 56.

Claw portions 88 projecting radially inward are provided on the inner surfaces of the pair of second positioning projections 80, and the positioning ring 56 can be easily assembled to the valve 24 by the claw portions 88. Can do.
Specifically, as shown in FIG. 10, when the positioning ring 56 is pushed into the valve 24 in the axial direction, the claw portion 88 elastically climbs over the retaining ring 44 attached to the ring groove 42 of the valve 24. When the claw portion 88 passes over the retaining ring 44 and passes over the retaining ring 44, the claw portion 88 is engaged with the retaining ring 44 by being hooked in the axial direction. As a result, the positioning ring 56 is assembled to the valve 24.
In addition, as shown in the partially enlarged views of FIGS. 7 and 10 (II), each claw portion 88 has a retaining ring 44 when the positioning ring 56 is pushed in the axial direction (downward direction in FIG. 7). An overpass guide having an inclined shape for getting over is provided on the front end side in the pushing direction.

The positioning ring 56 also has a pair of stopper portions that protrude radially inward at two locations on the inner surface thereof, specifically, at two locations in the same circumferential direction as the first positioning convex portion 76 on the outer surface. 84 is provided.
These stopper portions 84 function as a handle stopper portion that regulates the rotation of the handle 16 within a certain angle range.

  Specifically, the transmission member 58 that transmits the operation force in the rotational direction of the handle 16 to the valve shaft portion 38 has a pair of contact portions 86 that protrude radially outward as shown in FIGS. 11, when the handle 16 is rotated as shown in FIG. 11, the abutment portions 86 abut against the pair of stopper portions 84 of the positioning ring 56, thereby rotating the handle 16. Regulated within a certain angle range.

  When the handle 16 is rotated in the forward direction, one of the pair of contact portions 86 of the transmission member 58 contacts one of the pair of stopper portions 84 of the positioning ring 56, and when the handle 16 is rotated in the reverse direction. The other contact portion 86 of the transmission member 58 contacts the other stopper portion 84 of the positioning ring 56.

  In the valve body assembly 40, a resin valve shaft portion 38 and a metal (here, stainless steel) cylinder valve body 26 are formed separately, and are connected and assembled in the axial direction. (See FIGS. 12 to 16).

As shown in FIGS. 12, 15 and 16, the resin valve stem 38 is provided with a large-diameter circular male fitting portion 90 at the lower end in FIGS. The male fitting portion 90 is fitted into the inside of the cylinder valve body 26 through the opening at the upper end in the drawing, and the male fitting portion 90 is fitted into the female fitting at the upper end portion (shaft end portion) of the cylinder valve body 26 in the drawing. The joint 92 is elastically fitted.
Here, the pair of positioning protrusions 94 are integrally formed on the outer peripheral surface of the male fitting portion 90 at two locations spaced apart by 180 ° in the circumferential direction as shown in FIG. Is formed.

  On the other hand, a notch 96 having a rectangular front shape is formed following the opening at the upper end portion of the cylinder valve body 26 in the figure. A rotational direction position with the valve body 26 is defined.

  As shown in FIG. 17A, the metal cylinder valve body 26 is made of a drawn product obtained by drawing a metal plate 100 and punching and removing the bottom 102. The upper end of the shaft in the figure is curved radially inward with a uniform thickness toward the opening until reaching the opening at the end of the shaft, and the inside of the curved portion is engaged claw 98 over the entire circumference. It is said that.

Here, the engaging claw 98 that protrudes inward in the radial direction has a shape that gradually decreases in diameter toward the opening at the shaft end and reaches the opening.
On the other hand, the outer surface of the curved portion forms a curved surface (R surface) 106 that gradually decreases in diameter toward the opening until reaching the opening at the shaft end (see FIG. 15C).
In addition, the flange part 104 is formed in the annular | circular shape over the perimeter at the lower end part in the figure of the cylinder valve body 26.

  On the other hand, on the outer surface of the large-diameter male fitting portion 90 of the valve shaft portion 38, it protrudes radially outward at three locations separated by approximately 120 ° in the circumferential direction as shown in FIG. Engaging projections 108 are provided, and these engaging projections 108 are engaged with the engaging claws 98 of the cylinder valve body 26 in the axial direction and in the pulling direction of the valve shaft portion 38, and these engaging projections 108. With the engagement between the engagement claw 98 and the engagement claw 98, the valve shaft portion 38 and the cylinder valve body 26 are connected and assembled in the axially prevented state.

As shown in FIG. 16, the engaging protrusion 108 has a longitudinal shape extending in the axial direction, and its upper end is a sharply bent corner.
On the other hand, the lower end portion in the figure is an inclined surface 110 that moves inward in the radial direction as it proceeds downward.
The outer peripheral edge at the lower end of the male fitting portion 90 is a curved surface (R surface) 112.

  13 and 14, 114 is mounted on the edge of the opening 36 of the valve case 28, and is made of an elastic material such as rubber that seals the space between the cylinder valve body 26 and the main body 12 of the faucet in a watertight manner. A ring-shaped packing 116 is a hard constraining ring that is fitted in the inner peripheral side of the ring-shaped packing 114 and prevents deformation of the packing 114 in the centripetal direction.

In this embodiment, as shown in FIG. 15 (a), the positioning shaft 94 on the valve shaft portion 38 side is aligned with the notch 96 of the cylinder valve body 26 in the rotational direction, and the valve shaft portion 38 is elastically pushed downward through the opening at the upper end of the cylinder valve body 26 in the drawing to be fitted therein, and a large-diameter male fitting portion 90 of the valve shaft portion 38 and a female fitting portion 92 of the cylinder valve body 26 are inserted. And are elastically fitted.
At this time, the positioning protrusion 94 of the valve shaft 38 is fitted into and engaged with the notch 96 of the cylinder valve body 26, whereby the valve shaft 38 and the cylinder valve body 26 are positioned and fixed in the rotational direction. The

  When the valve shaft portion 38 is pushed into the cylinder valve body 26 in the axial direction in this way, a plurality of engaging projections 108 shown in FIG. As a result, the upper end of the cylinder valve body 26 in the drawing is elastically pushed open by the action, and then each engaging projection 108 is fitted into the upper end of the cylinder valve body 26 with a downward pushing force.

After the insertion, each engagement projection 108 is engaged with the engagement claw 98 of the cylinder valve body 26 as shown in FIG. 16, where the valve shaft portion 38 is in the axial direction with respect to the cylinder valve body 26. Combined with the retaining state.
Note that the amount by which the valve shaft portion 38 is pushed into the cylinder valve body 26 is defined by the pair of positioning protrusions 94 coming into contact with the bottom of the notch 96.

  In the present embodiment as described above, the cylinder claw 98 is engaged with the engagement claws 98 formed on the entire circumference of the cylinder valve body 26 and the engagement protrusions 108 provided at a plurality of circumferential positions of the valve shaft portion 38. The pulling force of the valve shaft portion 38 with respect to the valve body 26 can be increased, and the coupling strength in the axial direction between the cylinder valve body 26 and the valve shaft portion 38 can be increased.

  In the present embodiment, since the engagement protrusion 108 on the valve shaft portion 38 side has a longitudinal shape in the axial direction, the axial strength of the engagement protrusion 108 can be made high, and the cylinder valve body 26 On the other hand, when the valve shaft portion 38 is pushed in the axial direction to connect them, it is possible to effectively prevent the engagement protrusion from being damaged such as breakage, and the engagement protrusion 108 and the engagement claw 98 can be engaged with each other. The resultant force can be increased, and the coupling strength between the cylinder valve body 26 and the valve shaft portion 38 can be further increased.

  Further, since the inclined surface 118 that forms the insertion guide is provided on the distal end side in the insertion direction of the engagement protrusion 108, the insertion guide action of the inclined surface 110 facilitates the insertion of the valve shaft portion 38 into the cylinder valve body 26. The engaging protrusion 108 can be fitted into the female fitting portion 92 of the cylinder valve body 26.

  Furthermore, in this embodiment, the cylinder valve body 26 can be easily manufactured by drawing the metal plate member 100, and at the same time, the engaging claws 98 can be formed over the entire circumference.

Further, since the outer surface of the shaft end portion of the cylinder valve body 26 has a curved surface 112 that gradually decreases in diameter toward the opening until reaching the opening of the shaft end, the cylinder valve body 26 is fitted into the valve case 28 in the axial direction. Further, the fitting operation by the curved surface 112 can facilitate fitting, and the assembling workability between the cylinder valve body 26 and the valve case 28 can be improved.

  Although the embodiment of the present invention has been described in detail above, the cylinder type valve of the present invention can be applied not only to a single water faucet but also to a so-called two-handle water / water mixing faucet and other various faucets or others. For example, the present invention can be configured in various forms without departing from the spirit of the present invention.

It is a figure which shows the faucet incorporating the cylinder type valve of one Embodiment of this invention in an external appearance state. It is a plane sectional view of the faucet of FIG. It is side surface sectional drawing of the water tap of FIG. It is the perspective view which exploded and showed the cylinder type valve of the embodiment with the faucet. It is the perspective view which showed each component of FIG. 4 from another direction. It is side surface sectional drawing of each component shown in FIG.4 and FIG.5. It is a single item figure of the positioning ring in the cylinder type valve of the embodiment. It is the figure which showed the assembly | attachment relationship of the positioning ring of FIG. 7, the main body of a faucet, and a transmission member. It is the figure which showed the positioning structure of the positioning ring and valve case of FIG. It is the figure which showed the assembly structure of the positioning ring and valve case of FIG. FIG. 8 is an action explanatory diagram showing a rotation restricting action on the handle of the positioning ring of FIG. 7. It is the figure which showed the cylinder type valve | bulb of the same embodiment in the assembly | attachment state single-piece | unit. It is the perspective view which decomposed | disassembled and showed the cylinder type valve | bulb of FIG. 12 to the valve case and the valve body assembly | attachment body. It is the perspective view which decomposed | disassembled the cylinder type valve | bulb of FIG. 12 into the valve case and the valve body assembly | attachment body, and was shown in the direction different from FIG. It is the figure which showed the assembly structure of the cylinder valve body and valve stem part in the cylinder type valve of the embodiment. It is sectional drawing shown in the state which assembled | attached the cylinder valve body and valve stem part of FIG. It is the figure which showed the principal part of the manufacturing process of the cylinder valve body of FIG.15 and FIG.16. It is the figure which showed an example of the conventional cylinder type valve.

Explanation of symbols

DESCRIPTION OF SYMBOLS 22 Water channel 24 Cylinder type valve 26 Cylinder valve body 28 Valve case 30, 32, 34, 36 Open 38 Valve shaft part 90 Male fitting part 92 Female fitting part 98 Engagement claw 108 Engagement protrusion 110 Inclined surface 112 Curved surface (R surface)

Claims (5)

A cylindrical cylinder valve body, a cylindrical valve case outside the cylinder valve body, and a valve shaft that is separate from the cylinder valve body and is connected to the cylinder valve body and rotationally drives the cylinder valve body The cylinder valve body is rotatably fitted in the valve case, and the cylinder valve body and the valve case have a water passage opening that penetrates the peripheral wall in and out at predetermined locations in the circumferential direction. In the cylinder type valve that changes the position of the opening of the cylinder passage by changing the position of the opening of the cylinder valve body with respect to the opening of the valve case as the cylinder valve body rotates with respect to the valve case. The female fitting portion of the shaft end portion of the body is fitted with the female fitting portion of the corresponding shaft end portion of the valve shaft portion in the axial direction through the opening of the shaft end of the cylinder valve body. And fitting the part and male fitting part,
The female fitting portion is provided with an engaging claw that decreases in diameter toward the opening at the shaft end and protrudes radially inward over the entire circumference. On the outer peripheral surface, there are provided engagement protrusions that protrude radially outward and engage with the engagement claws in the axial direction and the withdrawal direction of the valve shaft portion. A cylinder type valve characterized in that the cylinder valve body and the valve shaft portion are connected in an axially secured state.   2. The cylinder type valve according to claim 1, wherein the engaging protrusion has a longitudinal shape extending in the axial direction.   The cylinder type valve according to any one of claims 1 and 2, wherein the male fitting portion is provided with the engagement protrusions at a plurality of locations in a circumferential direction.   4. The inclined surface according to any one of claims 1 to 3, wherein the engaging protrusion has an inclined surface that forms an insertion guide when the engaging protrusion is inserted in the female fitting portion in the axial direction. Cylinder type valve characterized by that.   The cylinder valve body according to any one of claims 1 to 4, wherein the cylinder valve body is a drawn product obtained by drawing a metal plate material and punching out a bottom portion, and the shaft end portion of the cylinder valve body is an opening of the shaft end. It is curved radially inward with a uniform thickness toward the opening, and the inside of the curved portion forms an engaging claw over the entire circumference, and the outer surface is the opening at the shaft end. A cylinder type valve characterized by having a curved surface that gradually decreases in diameter toward the opening.

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