JP5732661B2 - Cylinder type valve device - Google Patents

Description

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

  Conventionally, a cylindrical cylinder valve body having a valve body side opening for water passage, a valve case having a case side opening for water passage, in which the cylinder valve body is rotatably fitted, and a cylinder by rotating the handle A cylinder-type valve device having a drive shaft portion that rotationally drives the valve body, and performing water passage while the valve body side opening and the case side opening are polymerized by rotation of the cylinder valve body, while water is stopped in a non-polymerized state Is used as a valve device such as a faucet.

  In this type of cylinder type valve device, if the cylinder valve body and the drive shaft are made of an integral resin product, the cylinder valve body will inevitably become thicker and the resin cylinder valve body will have an outer peripheral surface. That is, the sealing surface is likely to be uneven due to the shrinkage of the resin during molding, and the outer surface is easily scratched by foreign matter such as sand, and such an uneven shape is generated or damaged on the outer surface. If sticking occurs, this can cause water leakage, which can impair the reliability of the seal.

  Therefore, in the cylinder type valve device, the cylinder valve body and the drive shaft portion are separated and the drive shaft portion is made of resin, while the cylinder valve body is made of metal and assembled and combined. Various proposals have been made.

  In this cylinder type valve device, a rotation transmitting portion for transmitting the rotation of the drive shaft portion to the cylinder valve body and a retaining portion for preventing the drive shaft portion from coming off from the cylinder valve body to the handle side are provided. In the prior art, the cylinder valve body and the drive shaft are abutted and joined in the axial direction, and the above-mentioned rotation transmission part is connected to the joined part, that is, the same axial end on the abutting side. And a retaining portion.

FIG. 10 shows a specific example thereof.
In FIG. 10, reference numeral 200 denotes a metal cylinder valve body, and 202 denotes a resin drive shaft portion. Here, a notch portion 204 and a retaining hole 206 are formed at the same axial end portion (upper end portion in the figure) of the cylinder valve body 200. The drive shaft 202 is also provided with an engaging protrusion 208 and an elastic claw 210 at the same axial end (lower end in the figure), and the drive shaft 202 is elastic by being pushed downward in the figure. The claw 210 is elastically deformed so that the claw portion 212 at the front end is engaged with the retaining hole 206 of the cylinder valve body 200, and the engagement protrusion 208 is fitted into the notch portion 204. The portion 202 is coupled to the axial direction in a butted state.

Here, the notch portion 204 and the engagement protrusion 208 constitute a rotation transmission portion, and the rotation of the drive shaft portion 202 is transmitted to the cylinder valve body 200 based on the engagement.
On the other hand, the retaining hole 206 and the elastic claw 210 form a retaining portion. Here, the claw portion 212 is hooked on the retaining hole 206, and more specifically, the claw portion is against the retaining surface on the upper side of the retaining hole 206. When the contact surface of the upper surface of 212 abuts, the drive shaft portion 202 is prevented from coming off from the cylinder valve body 200 to the upper side in FIG.

However, in the case where the drive shaft portion 202 is pushed in while elastically deforming a part of the drive shaft portion 202 in this case, the elastic claw 210 in this case, a strong force is required for the assembly.
Also, since the rotation transmission part and the retaining part are provided at the same end in the axial direction, the space for the rotation transmission part (space in the circumferential direction) cannot be secured sufficiently, and the limited narrow space There is a problem that a rotation transmission part must be provided.

  Specifically, the notch portion 204 and the engagement protrusion 208 for the rotation transmitting portion must be provided in a circumferential space other than the space occupied by the retaining hole 206 and the elastic claw 210 as the retaining portion. In addition, the elastic claw 210 and the retaining hole 206 need to be formed to be somewhat wide in the circumferential direction in order to ensure a sufficient pull-out resistance. As a result, the notch portion 204 and the engagement protrusion 208 are provided. Space is greatly limited.

  For this reason, it is difficult to provide a large number of notches 204 and engaging projections 208 or to provide a wide width, and when the cylinder valve body 200 is rotated by the drive shaft 202, the sealing member applied to the cylinder valve body 200 is strong. Since the cylinder valve body 200 must be rotationally driven to overcome the sliding resistance, a strong force is locally applied to the resin-made engaging projection 208 during the rotation, and the cylinder valve device is repeatedly used. The engagement protrusion 208 is worn away by being cut or worn by the notch 204, and the degree of wear is greatly increased while being used over a long period of time.

  Thus, when wear due to wear or the like of the engaging projection 208 progresses, the rotational driving force from the drive shaft 202 is not transmitted well to the cylinder valve body 200, and this is a cylinder type valve device. There has been a problem that this leads to a decrease in the lifespan.

  Further, in this cylinder type valve device, the cylinder valve body 200 and the drive shaft 202 are merely joined at the butting end in the axial direction, and therefore the cylinder valve body 200 and the drive shaft 202 are butted and assembled. In some cases, the cylinder valve body 200 and the drive shaft 202 may not be assembled in a straight line because they are slightly bent at the joint, and there is room for improvement in terms of assembly. was there.

  The above is the case where the cylinder valve body is made of metal and the drive shaft part is made of resin, but the same problem can generally occur when the cylinder valve body and the drive shaft part are configured separately and assembled. In particular, such a problem is more likely to occur when different materials are used and one is harder than the other.

In addition, there exist some which were disclosed by following patent document 1 and patent document 2 as a prior art relevant to this invention.
However, in all of those disclosed in these patent documents, the drive shaft portion is pushed in the axial direction with respect to the cylinder valve body and coupled in a butted state, and the rotation transmitting portion and the retaining portion are provided in the coupled portion. The problem to be solved of the present invention is included as it is.

JP 2008-185156 A JP 2004-190768 A

  The present invention, against the background of the above circumstances, can prevent the rotation transmission portion that transmits rotation from the drive shaft portion to the cylinder valve body from being worn out due to wear or the like, and increases the life of the valve device compared to the conventional one. It is an object of the present invention to provide a cylinder type valve device that can be used.

Thus, according to the first aspect, (a) a cylindrical cylinder valve body having a valve body side opening for water passage, and (b) a case side opening for water passage, the cylinder valve body is rotated. A valve case that can be fitted inside, (c) a drive shaft that is configured to rotate independently of the cylinder valve body by rotating the handle, and (d) the drive shaft. A rotation transmitting portion that transmits the rotation of the cylinder valve body to the cylinder valve body, and (e) a retaining portion that prevents the drive shaft portion from coming off from the cylinder valve body toward the handle. In the cylinder type valve device that performs water passage with the valve body side opening and the case side opening in a superposed state by rotation of the valve body, while stopping water in a non-polymerized state, the drive shaft portion includes an interior of the cylinder valve body. A penetrating portion that penetrates in the axial direction from one end on the handle side to the other end on the opposite side Providing a notch on one of the other end of the cylinder valve body and the corresponding rear end of the penetrating part, and an engaging protrusion engaging the notch on the other, The engagement projecting portion constitutes the rotation transmitting portion, and the cylinder valve body is provided with a retaining surface at a position different from the other end portion in the axial direction, while being in contact with the retaining surface in the axial direction. A contact surface is provided in the penetrating portion in contact with the contact portion, and the retaining portion is configured by the retaining surface and the contact surface .

According to a second aspect of the present invention, (a) a cylindrical cylinder valve body having a valve body side opening for water passage, and (b) a case side opening for water passage, the cylinder valve body being rotatable inside. A valve case to be fitted; (c) a drive shaft portion configured to rotate the cylinder valve body by rotating a handle; and a drive shaft portion configured separately from the cylinder valve body; and (d) rotation of the drive shaft portion. A rotation transmitting portion for transmitting to the cylinder valve body; and (e) a retaining portion for preventing the drive shaft portion from coming off from the cylinder valve body toward the handle, and by rotation of the cylinder valve body In the cylinder type valve device that performs water passage with the valve body side opening and the case side opening in a superposed state, and stops water in a non-polymerized state, the inside of the cylinder valve body is disposed in the handle on the drive shaft portion. Providing a penetrating portion penetrating in the axial direction from one end of the side to the other end of the opposite side, A notch portion is provided on one of the other end portion of the cylinder valve body and a corresponding rear end portion of the penetrating portion, and an engaging protrusion that engages with the notch portion is provided on the other side. The rotation transmission part is constituted by a projecting part, and the drive shaft part can be inserted into the cylinder valve body from the other end part side opposite to the one end part on the handle side of the cylinder valve body. The notch and the engagement protrusion are formed into a shape, and the engagement protrusion with respect to the notch is inserted into the cylinder valve body from the other end side. It has a shape to fit,
Further, the retaining portion has a shaft end surface of the other end portion of the cylinder valve body or a surface projecting radially inward from the inner surface of the cylinder valve body as a retaining surface, and is axially directed to the retaining surface. It is comprised by the contact surface provided in the said penetration part in the state contact | abutted to this, and this retaining surface .

According to a third aspect of the present invention, in the cylinder valve body according to the second aspect , the one end portion is bent radially inward, and an inner surface of the bent portion serves as the retaining surface. A contact surface is provided in an axially inner position of the bent portion so as to abut against the retaining surface in the axial direction, and the retaining portion is constituted by the retaining surface and the contacting surface. Features.

According to a fourth aspect of the present invention, in the second aspect of the present invention, the rear end portion of the penetrating portion is provided with a flange-like portion protruding outward in the radial direction, and the handle-side surface of the flange-like portion is provided on the handle. A portion of the shaft end surface of the cylinder valve body other than the bottom surface of the notch portion provided on the cylinder valve body or the projecting side end surface of the engagement protrusion is formed as the contact surface in the stop portion. It is the said retaining surface in the said retaining part, It is characterized by the above-mentioned.

According to a fifth aspect of the present invention, in the second aspect , the notch portion is provided in the cylinder valve body, and the engagement protrusion is provided in the penetration portion, and the shaft end surface of the cylinder valve body is Whether the bottom surface of the notch is the retaining surface, and the projecting side end surface of the engaging projection is the contact surface,
Alternatively, the notch portion is provided in the penetrating portion, the engagement protrusion is provided in the cylinder valve body, and the protruding end surface of the engagement protrusion of the shaft end surface serves as the retaining surface. And the bottom surface of the notch is the contact surface.

According to a sixth aspect of the present invention, in any one of the first to fifth aspects, the penetrating portion has a cylindrical shape and is fitted into the cylinder valve body in an internally fitted state, and the penetrating portion is the rear end portion. And an opening in the radial direction penetrating the cylindrical wall at a position corresponding to the valve element side opening.

Effects and effects of the invention

As described above, according to the present invention, the rotation transmission portion and the retaining portion are conventionally provided on the side of the axial end portion on the handle side of the cylinder valve body, which is a coupling portion between the cylinder valve body and the drive shaft portion. However, a rotation transmission portion is provided on the end (the other end) in the axial direction opposite to the handle side of the cylinder valve body.
Specifically, the drive shaft portion includes a penetrating portion that penetrates the inside of the cylinder valve body from one end portion on the handle side to the other end portion on the opposite side, and engages with the notch portion on the other end side. In accordance with the present invention, there is a high degree of freedom in position, space, and form in providing the rotation transmission portion and the retaining portion. It is possible to effectively increase the life of the cylinder type valve device by suppressing wear due to wear or the like of the transmission portion.

That is, in the present invention, since the penetrating portion of the drive shaft portion penetrates the cylinder valve body in the axial direction, and the penetrating portion overlaps the entire length of the cylinder valve body, the rotation transmitting portion is Is provided on the other end side opposite to the handle side of the cylinder valve body in the axial direction. For example, according to claim 1 , the retaining portion is different in the axial direction. It can be provided at a position.

  Thus, the space around the entire circumference of the drive shaft portion (through portion) and the cylinder valve body can be used as a space for the rotation transmission portion without being restricted by the space due to the retaining portion. Therefore, it is possible to freely increase the number of engaging protrusions and notches in the rotation transmission portion, or to increase the width (circumferential width), thereby causing wear due to wear of the rotation transmission portion. Can be suppressed, and the life of the cylinder type valve device can be increased.

Note the rotation transmission portion to retained portion in accordance with the claim 1 in the case of providing the different positions of the axial direction, it is possible to provide retaining portion (retaining surface, contact surface) in a variety of forms.
For example, a retaining hole is provided in the cylinder valve body, and a claw portion is provided in the penetrating portion of the drive shaft portion, and this is engaged with the retaining hole, and the contact surface of the claw portion is made to the retaining surface of the retaining hole. It is possible to make it contact in the axial direction, or to configure the retaining portion in other forms.

In the present invention, the rotation transmitting portion is provided on the other end side opposite to the handle side of the cylinder valve body, so that, for example, the shape of the drive shaft portion on the handle side of the cylinder valve body is changed according to claim 2 . After making the shape that can be inserted into the inside of the cylinder valve body from the other end side opposite to the one end portion, the shape of the notch portion and the engaging projection portion in the rotation transmission portion, the drive shaft portion as described above When the cylinder valve body is inserted in the direction, the engagement protrusion can be shaped to fit into the notch. In this case, the rotation transmission unit can be simply inserted into the cylinder valve body. It is possible to engage the notch portion and the engaging protrusion.

  For example, in the case where the notch portion is provided on the cylinder valve body side, the notch portion is formed so as to open outward in the axial direction, so that when the drive shaft portion is inserted into the cylinder valve body, The engaging protrusion (on the side of the penetrating portion) can be fitted into the notch in the insertion direction, and the engaging protrusion and the notch can be easily engaged in the rotation direction. .

Also according to the second aspect, a surface that protrudes from the inner surface of the axial end surface or the cylinder valve body radially inward of the other end portion of the cylinder valve body and retaining surface, and axially relative to the retaining surface It is possible to provide a contact surface in the penetrating portion so as to be in contact with each other, and the retaining surface and the contact surface constitute the retaining portion.

According to the second aspect of the present invention , the notch portion and the engaging projection that form the rotation transmitting portion are brought into the engaged state simply by inserting the drive shaft portion into the cylinder valve body from the other end side. In addition, the contact surface of the drive shaft portion can be brought into contact (pressed) against the retaining surface of the cylinder valve body, and the drive shaft portion can be retained against the cylinder valve body. .

According to this second aspect , one end of the cylinder valve body on the handle side in the axial direction is bent inward in the radial direction, and the inner surface of the bent portion forms the retaining surface, while the penetrating portion of the drive shaft portion In such a case, a contact surface is provided at an axially inner position of the bent portion so as to abut against the retaining surface in the axial direction, and the retaining portion is configured by the retaining surface and the contacting surface. (Claim 3 ).
In this case, the retaining surface and the contact surface can be provided over the entire circumference.

Also in the second aspect, is provided a flange portion which projects radially outward above the rear end of the through portion of the drive shaft portion, the retaining portion of the handle-side surface of the collar portion On the other hand, a part of the shaft end surface of the cylinder valve body, specifically the bottom surface of the above-mentioned notch (when the notch is provided on the cylinder valve body and the engaging protrusion is provided on the through portion) or A portion other than the protruding end surface of the engaging protrusion (when the engaging protrusion is provided on the cylinder valve body side and the notch is provided on the through portion side) can be used as a retaining surface in the retaining portion. (Claim 4 ).

In the fourth aspect , unlike the conventional case, an elastic claw is provided on the side of the drive shaft portion, and the retaining portion is retained by retaining it on a retaining hole provided on the cylinder valve body side. Even if the retaining surface and the contact surface forming the surface are not formed widely in the circumferential direction, the retaining function can be sufficiently provided, and thus the rotation transmitting portion can be formed using a wide circumferential space. It becomes possible.

On the other hand, according to claim 5, the bottom surface of the notch portion or the projecting side end surface of the engaging projection is formed as the retaining surface, and the projecting side end surface of the engaging projection fitted into the notch portion or the bottom surface of the notch portion is contacted as described above. It can also be a surface.
According to the fifth aspect , the rotation transmitting portion can be configured by the notch portion and the engaging protrusion, and at the same time, the retaining portion can be configured by them.

In the present invention, it is also possible to constitute a cylinder type valve device by combining claim 4 and claim 5 , and in this case, the rotation transmitting portion and the retaining member are arranged on the other end side of the cylinder valve body. In spite of the provision of both of the portions, the entire circumferential space can be used as a space for the rotation transmitting portion and also as a space for the retaining portion.

In the present invention, the penetrating portion in the drive shaft portion is formed into a cylindrical shape so that the penetrating portion is fitted into the cylinder valve body in an internally fitted state, and the penetrating portion is disposed on the side of the other end portion, That is, it can have an opening that opens in the axial direction at the rear end of the penetrating portion, and an opening that penetrates the cylindrical wall in a radial direction at a position corresponding to the valve element side opening (claims). 6 ).

  In this way, unlike the case of the conventional cylinder type valve device shown in FIG. 10, the cylinder valve body and the rotary shaft portion are assembled and connected in abutting state at each end. It is possible to support from the inside in the radial direction by a cylindrical through portion that fits into the cylinder, and it is possible to stabilize the holding posture of the cylinder valve body by the drive shaft portion, and the drive shaft portion and the cylinder valve body Can be assembled in a straight line without bending.

  Moreover, even in such a case, when the valve body side opening of the cylinder valve body is overlapped with the case side opening by the axial opening and the radial opening provided in the cylindrical portion. Can be ensured.

It is an external view of a mixing faucet incorporating a switching valve device as a cylinder type valve device of one embodiment of the present invention. It is the figure which showed the internal structure of the principal part of the mixing tap of FIG. It is an external view of the switching valve apparatus of FIG. It is sectional drawing of the switching valve apparatus of FIG. It is VV sectional drawing of the switching valve apparatus of FIG. (A) It is an external view of a drive shaft part. (B) It is an external view of a cylinder valve body. It is the figure which showed the rotation transmission part of the switching valve apparatus in the embodiment in the isolation | separation state. It is the figure which showed the drive shaft and cylinder valve body in the same embodiment with the assembly | attachment procedure. It is the figure which showed the principal part of other embodiment of this invention. It is the figure which showed the principal part of the conventional cylinder type valve apparatus.

Next, embodiments of the present invention will be described in detail with reference to the drawings.
In FIG. 1, 10 is a mixing faucet with a wall, and has a faucet body 12 having a longitudinal shape in the left-right direction in the figure.
From the lower surface of the faucet body 12, a substantially L-shaped water discharge pipe 16 having a water discharge port 14 at its tip extends, and from the back, a shower-side outlet 18 protrudes rearward. A shower elbow 20 is connected to the main body.
A shower head (not shown) is connected to the shower elbow 20 via a flexible shower hose.

A temperature control handle 22 is provided on one end side (left end side in the figure) of the faucet body 12 in the longitudinal direction, and on the other end side (right end side in the figure), on the side of the water discharge pipe 16 and on the shower side. And a switching handle 24 for switching the flow path and adjusting the flow rate of the discharged water.
Here, the switching handle 24 also performs switching from water discharge to water stop or vice versa.

From the faucet body 12, a water-side crank leg 26 also serving as a water supply pipe and a hot water-side crank leg 28 also serving as a hot water supply pipe respectively extend rearward.
The mixing faucet 10 is attached to the rear wall by the pair of crank legs 26 and 28.

  As shown in FIG. 2, the faucet body 12 has a substantially cylindrical metal housing 30 having a circular inner cross-sectional shape as a body body, and the right end side in FIG. Further, a switching valve device 34 composed of a cylinder type valve device is provided for switching the flow of the mixed water flowing in the housing 30 to the right in the drawing to the water discharge pipe 16 side or the shower side.

  The housing 30 is provided with an outflow opening 36 on the side of the water discharge pipe 16, and an outlet part 38 on the side of the water discharge pipe 16 protrudes from the outflow opening 36. Are rotatably connected by a fastening nut 40.

As shown in FIGS. 2 and 4, the switching valve device 34 includes a cylindrical metal cylinder valve body 42 and a resin cylindrical valve case 44 in which the cylinder valve body 42 is rotatably fitted. Have.
The cylinder valve body 42 has a water valve body side opening 46 on the side of the water discharge pipe 16 penetrating the cylindrical wall at a predetermined position in the circumferential direction and a water valve body side opening 48 on the shower side.

As shown in FIG. 5, a plurality of ribs 41 are provided in the circumferential direction on the inner surface of the valve case 44, and the cylinder valve body 42 is supported by the ribs 41 from the outside in the radial direction.
In FIG. 5, reference numeral 43 denotes an opening forming member that forms the case side openings 50 and 54, and is provided in the valve case 44 in a fitted state.

The cylinder valve body 42 is mixed water that has flowed in the right direction in the drawing in the housing 30 in a state where the valve body side opening 46 on the water discharge pipe 16 side is overlapped with the corresponding case side opening 50 of the valve case 44 by rotation. From the valve element side opening 46 to the flow path 51 inside the housing 30 through the case side opening 50.
The mixed water that has flowed out into the flow channel 51 then flows through the axial flow channel 52, and then flows out into the water discharge pipe 16 through the flow-out opening 36 and is discharged from the water discharge port 14 at the tip thereof to the outside.

On the other hand, in a state where the valve body side opening 48 on the shower side is superposed on the corresponding case side opening 54 of the valve case 44, the mixed water passes from the valve body side opening 48 to the flow path 56 inside the housing 30 through the case side opening 54. And let it flow.
The mixed water that has flowed out into the flow channel 56 reaches a flow channel 58 on the left side in the drawing along an axial flow channel (not shown), and from there through the outlet 18 on the shower side in FIG. Water is discharged from the head.
Here, the valve body side opening 46 on the side of the water discharge pipe 16 and the valve body side opening 48 on the shower side are provided at positions different from each other by 180 ° in the circumferential direction.
The valve case 44 of the switching valve device 34 and the housing 30 are watertightly sealed by an O-ring 60 mounted on the outer peripheral surface of the valve case 44.

  2, 4, and 5, 62 is a seal member provided between the cylinder valve body 42 and the valve case 44 so as to surround the case side openings 50, 54. A space between the body 42 and the valve case 44 is sealed watertight around the case side openings 50 and 54.

  As shown in FIG. 3, the valve case 44 is integrally provided with an annular projecting portion 64 projecting radially outward on the right end side in the drawing, and this projecting portion 64 is shown in FIG. The valve case 44 is fixed to the housing 30 in the axial direction by being sandwiched in the axial direction by the stepped portion 66 of the housing 30 and the nut 68 screwed into the housing 30.

  As shown in FIG. 3, the protrusion 64 is provided with a rotational positioning protrusion 70 partially protruding in the axial direction in the circumferential direction. The positioning protrusion 70 is provided on the housing 30. The entire valve case 44 is positioned in the rotational direction (circumferential direction) with respect to the housing 30 by being fitted in the corresponding positioning recesses in the left direction in the figure.

From the cylinder valve body 42, a resin-made drive shaft 72 that rotates the cylinder valve body 42 by rotating the switching handle 24 extends to the right in the drawing on the switching handle 24 side.
The drive shaft portion 72 is provided with a serration portion 74 at a predetermined position in the axial direction. In this serration portion 74, the drive shaft portion 72 is serration-coupled to the switching handle 24 in an integrally rotated state.

Here, the switching handle 24 is fixed to the drive shaft portion 72 in a state of being prevented from being removed in the axial direction by pressing a cap 76 that also serves as a retaining member.
Specifically, the switching handle 24 is integrally provided with a fixing portion 78 made of an elastic piece, and the fixing portion 78 is driven into the drive shaft by pushing the leg portion 80 of the cap 76 into the groove on the outer peripheral side of the fixing portion 78. The switch handle 24 is prevented from being pulled out from the drive shaft portion 72 in the axial direction by being pressed by the spherical portion 82 of the portion 72.

Reference numeral 84 denotes a rotating member that rotates integrally with the switching handle 24 and is serrated and coupled to the serration portion 86 of the drive shaft 72 in an integrally rotated state.
The rotating member 84 is a member for generating a click feeling at a predetermined angular position when the switching handle 24 is rotated, and has a protrusion (not shown) protruding leftward in the drawing at a predetermined circumferential position on the left end side in the drawing. The projecting portion is inserted into a corresponding concave portion of the disk-like member 90 urged rightward in the drawing by the coil spring 88, thereby generating a click feeling.
The rotating member 84 is fixed in the axial direction with respect to the drive shaft portion 72 by being sandwiched between a retaining ring 94 fitted in the annular groove 98 of the drive shaft portion 72 and a stepped portion 96 of the drive shaft portion 72. Has been.

As shown in FIG. 2, the drive shaft 72 has a rotating member 84 that contacts the cylindrical portion 45 of the valve case 44 via the disc-like member 90 in the left direction in the figure, and further the switching handle 24 has a ring shape. By striking the housing 30 via the member 92, the valve case 44 cannot move relative to the valve case 44 in the left direction in the drawing by a certain minute distance.
Here, the drive shaft 72 is sealed watertight to the valve case 44 by an O-ring 100 held in the annular groove 95 outside the cylinder valve body 42.

As shown in FIGS. 4 and 6, the cylinder valve body 42 is provided with a bent portion 102 that is bent radially inward at an end portion in the axial direction on the switching handle 24 side in an annular shape. It has been.
The entire portion of the cylinder valve body 42 excluding the bent portion 102 has a cylindrical shape extending in a straight shape in the axial direction with the same inner diameter and the same outer diameter on both the inner surface and the outer surface.
The cylinder valve body 42 has notches 104, 106, 108, 110, and 112 that are opened outward in the axial direction at the other end opposite to the switching handle 24. It is formed with depth.

  On the other hand, the drive shaft portion 72 penetrates in the axial direction from the one end portion on the switching handle 24 side to the other end portion on the opposite side through the main body portion 114 exposed to the outside from the cylinder valve body 42 and the inside of the cylinder valve body 42. The body portion 114 is provided with the serration portions 74 and 86, the spherical portion 82, and the annular groove 98.

In this embodiment, the entire penetrating portion 115 has a cylindrical shape and is fitted into the cylinder valve body 42 in an internally fitted state.
The cylindrical penetrating portion 115 is also a surface that has an inner surface and an outer surface that have the same inner diameter and the same outer diameter and extends in a straight shape in the axial direction.

  In this embodiment, the drive shaft portion 72 has a through portion 115 having a large diameter with respect to the main body portion 114, and the entirety of the drive shaft portion 72 extends rightward in the drawing, that is, the plurality of cutout portions 104. It is set as the shape which can be penetrated from the side of the other end part which provided -112 to the side of the one end part which provided the said bending part 102.

The penetrating portion 115 is integrally provided with a hook-shaped portion 117 projecting annularly outwardly in the radial direction outside the other end portion of the cylinder valve body 42.
The hook-shaped portion 117 has an engagement protrusion 116, 118, 120, 122, 124 that protrudes to the right in the drawing, that is, in the axial direction toward the notches 104, 106, 108, 110, 112 of the cylinder valve body 42. Are integrally provided at circumferential intervals corresponding to the notches 104, 106, 108, 110, and 112, and the engaging protrusions 116, 118, 120, 122, and 124 correspond to the cylinder valve bodies 42. The notches 104, 106, 108, 110, and 112 are inserted in the axial direction, engaged with the corresponding notches in the circumferential direction, that is, in the rotational direction of the cylinder valve body 42, and the drive shaft 72 is rotated. Is transmitted to the cylinder valve body 42.
Here, the notches 104, 106, 108, 110, 112 provided in the cylinder valve body 42 and the engaging protrusions 116, 118, 120, 122, 124 provided in the penetrating portion 115 are connected to the rotation transmitting portion 126 ( (See FIGS. 4 and 8).

In this embodiment, as shown in FIG. 7, the shaft end surface 136 of the cylinder valve body 42 has an uneven shape in the circumferential direction.
Specifically, the shaft end surface 136 is entirely formed by the bottom surfaces 138 of the notches 104, 106, 108, 110, and 112 and the end surface 140 of a portion other than the notches.
In this embodiment, the notches 104, 106, 108, 110, and 112 are all cut at the same depth, and therefore the bottom surfaces 138 of the notches are all at the same position in the axial direction.
Correspondingly, the projecting side end surfaces 142 of the engaging projections 116, 118, 120, 122, 124 are also located at the same position in the axial direction.
In this embodiment, the bottom surface 138 of each notch and the protruding side end surface 142 of each engaging protrusion are not in direct contact with each other in the assembled state, and a minute gap (0.1 to 0) exists between them. About 2 mm).

Similarly, as shown in FIG. 8, a substantially similar gap is also formed between the axial inner surface 144 of the flange-shaped portion 117 on the cylinder valve body 42 side and the end surface 140 of the cylinder valve body 42. Has been.
The axial end surface 136 of the cylinder valve body 42 and the inner surface 144 in the axial direction of the flange-shaped portion 117 of the penetrating portion 115, the bottom surface 138 of the notch, and the protruding side end surface 142 are all surfaces perpendicular to the axis, that is, the cylinder. A plane perpendicular to the axial direction of the valve body 42 and the penetrating portion 115 is formed.

  As shown in FIG. 4, the cylindrical through portion 115 has an axial opening portion 128 opened at the rear end portion (left end portion in the figure) and valve body side openings 46 and 48 of the cylinder valve body, respectively. It has radial openings 130 and 132 penetrating the cylindrical wall at corresponding positions, and an internal flow path 134, and the mixed water flowing in the right direction in FIG. After flowing into the passage 134, it flows out to the valve body side opening 46 or 48 through the radial openings 130 and 132.

In this embodiment, the penetrating portion 115 is fitted to the inner surface of the cylinder valve body 42 and functions as a support portion for supporting the cylinder valve body 42 from the inside, while the axial opening 128 and the radial direction are provided. The openings 130 and 132 and the internal flow passage 134 ensure water flow through the valve body side openings 46 and 48 of the cylinder valve body 42.
In this embodiment, the penetrating portion 115 is assembled to the inner surface of the cylinder valve body 42 so that the cylinder valve body 42 and the drive shaft 72 are kept in a straight shape without bending in the assembled state. The

  As shown in FIG. 4, the inner surface of the bent portion 102 in the cylinder valve body 42 forms a retaining surface 146 in the direction perpendicular to the axis, and the drive shaft portion 72 is against the retaining surface 146. A radial surface (surface perpendicular to the axis) of the shoulder portion 148 of the penetrating portion 115 is abutted in the axial direction as a contact surface 150.

In this embodiment, the drive shaft 72 is prevented from coming off the cylinder valve body 42 in the right direction in the drawing, that is, on the switching handle 24 side, by the contact of the contact surface 150 with the retaining surface 146 in the axial direction.
In the present embodiment, the retaining surface 146 and the contact surface 150 constitute a retaining portion 152 (see FIG. 4).
That is, this embodiment is an example in which the retaining portion 152 is provided at a different position in the axial direction with respect to the rotation transmitting portion 126.

  In this embodiment, the drive shaft portion 72 is inserted into the cylinder valve body 42 from the left end side in the figure with respect to the cylinder valve body 42, and set in a predetermined position inside the housing 30 in FIG. The nut 68 is fixed to the housing 30 by screwing into the housing 30, and the disk-shaped member 90, the coil spring 88, the rotating member 72, and the retaining ring 94 are assembled to the drive shaft 72, and the switching handle is further mounted on the drive shaft 72. By assembling 24, the switching valve device 34 can be incorporated into the housing 30.

  In the present embodiment as described above, the drive shaft portion 72 penetrates the cylinder valve body 42 over the entire length in the axial direction, and the rotation transmission portion 126 is the other end portion of the cylinder valve body 42 opposite to the switching handle 24. Since the rotation transmitting portion 126 and the retaining portion 152 are provided, the positional, space, and morphological degrees of freedom are high.

  Specifically, here, the penetrating portion 115 of the drive shaft portion 72 penetrates the cylinder valve body 42 in the axial direction, and the penetrating portion 115 overlaps the cylinder valve body 42 over its entire length. Thus, after providing the rotation transmitting portion 126 on the other end side of the cylinder valve body 42 opposite to the axial direction, the retaining portion 152 is located at a position different from the axial direction. Specifically, the cylinder valve body 42 is provided on the side of the end portion on the switching handle 24 side here.

In this way, the space around the entire circumference of the drive shaft portion 72 (through portion 115) and the cylinder valve body 42 is freed from the space for the rotation transmission portion 126 without being restricted by the retaining portion 152 in terms of space. Therefore, the number of the engagement protrusions 116, 118, 120, 122, 124 and the notches 104, 106, 108, 110, 112 in the rotation transmission portion 126 is increased, and the width (circumferential width) is increased. ) Can be increased.
Thereby, wear due to wear or the like of the rotation transmitting portion 126 can be suppressed, and the life of the cylinder type valve device can be increased.

In the present embodiment, the shape of the drive shaft 72 is inserted into the cylinder valve body 42 from the left end side of the cylinder valve body 42 in the drawing, that is, from the other end side opposite to the switching handle 24. And the shapes of the notches 104, 106, 108, 110, 112 and the engaging protrusions 116, 118, 120, 122, 124 in the rotation transmitting portion 126 provided on the left end side of the cylinder valve body 42 in the figure, When the drive shaft 72 is inserted through the cylinder valve body 42 in the above direction, the engagement protrusions 116, 118, 120, 122, 124 are fitted into the notches 104, 106, 108, 110, 112. Therefore, simply by inserting the drive shaft 72 into the cylinder valve body 42, the notches 104, 106, 108, 110, 112 and the engaging protrusions 116, 118, 1 forming the rotation transmitting portion 126 are provided. It can be engaged with and 0,122,124.
In addition, the contact surface 150 of the drive shaft 72 is brought into contact with the retaining surface 146 of the cylinder valve body 42 so that the drive shaft 72 is moved from the cylinder valve body 42 to the right in the drawing, that is, on the switching handle 24 side. It is possible to keep it in a retaining state.

  In the present embodiment, the through portion 115 in the drive shaft portion 72 has a cylindrical shape, is fitted in the cylinder valve body 42 in an internally fitted state, and an axial opening is formed at the rear end portion of the through portion 115. Portion 128 is provided, and radial openings 130 and 132 are provided at positions corresponding to the valve body side openings 46 and 48, and in this way, the cylinder valve body 42 is formed from the inside through the through portion 115. It is possible to support, the holding posture of the cylinder valve body 42 by the drive shaft portion 72 can be stabilized, and the drive shaft portion 72 and the cylinder valve body 42 can be assembled in a straight line without bending. it can.

  Moreover, even in such a case, the valve body side opening 46 of the cylinder valve body 42 is formed by the axial opening 128, the radial openings 130, 132 and the internal flow path 134 provided in the penetrating portion 115. , 48 is secured to the case side openings 50, 54 in a superposed state.

  In the above embodiment, the bent portion 102 is provided at the axial end portion of the cylinder valve body 42 on the switching handle 24 side, and the axial inner surface thereof serves as the retaining surface 146, and there is a through portion in the drive shaft portion 72. The retaining portion 152 is configured by abutting the contact surface 150 of 115, but in the present invention, the retaining portion can be configured in a different form.

  For example, of the shaft end surface 136 of the cylinder valve body 42 shown in FIG. 7, the end surface 140 is used as a retaining surface, and the inner surface 144 of the flanged portion 117 in the penetrating portion 115 of the drive shaft portion 72 is used as a contact surface. It is also possible to form a retaining portion with the retaining surface composed of the end surfaces 140 and the contact surface composed of the inner surface 144.

  In this way, unlike the conventional case where an elastic claw is provided on the side of the drive shaft portion and this is hooked into a retaining hole provided on the cylinder valve body side, the retaining portion is prevented. Even if the end surface 140 as the retaining surface and the inner surface 144 as the contact surface are not formed widely in the circumferential direction, it is possible to have a sufficient retaining function, and therefore, a large space in the circumferential direction can be provided. It is possible to form the rotation transmission part 126 using.

  Alternatively, the bottom surface 138 of each of the notches 104, 106, 108, 110, 112 of the cylinder valve body 42 in FIG. 7 is used as a retaining surface, and the corresponding engaging projections 116, 118, 120, 122, 124 are provided. It is also possible to configure a retaining portion with each protruding side end surface 142 as a contact surface.

  In this way, the rotation transmitting portion 126 can be constituted by the notches 104, 106, 108, 110, 112 and the engaging protrusions 116, 118, 120, 122, 124, and at the same time, the retaining portion can be formed by them. It can be configured together.

  Further, the entire shaft end surface 136 composed of the bottom surface 138 and the end surface 140 of the notches 104, 106, 108, 110, 112 of FIG. 7 is used as a retaining surface, and the engaging protrusions 116, 118, It is also possible to constitute a retaining portion by bringing the protruding side end surfaces 142 of 120, 122, and 124 and the inner surface 144 of the hook-shaped portion 117 into contact with each other.

  In this case, although the rotation transmission portion 126 and the retaining portion are provided on the other end side of the cylinder valve body 42, the entire circumferential space is provided for the rotation transmission portion 126. It can be used as a space or a space for the retaining portion.

  Here, all the bottom surfaces 138 of the notches 106, 108, 110, 112, 114 are used as retaining surfaces, and all the projecting side end surfaces 142 of the engaging projections 116, 118, 120, 122, 124 are used as contact surfaces. Although the retaining portion is configured, in some cases, the retaining portion is configured with the bottom surface 138 of any notch and the projecting side end surface 142 of any engaging projection corresponding thereto as a contact surface. Is also possible.

  Further, in the above description, the end face 140 is used as a retaining surface, and the inner surface 144 of the flanged portion 117 is used as a contact surface to form a retaining portion. However, in some cases, a part of the end surface 140 is used as a retaining surface. It is also possible that a corresponding part of 144 is used as a contact surface, and a retaining portion is constituted by them.

  In the above example, the notch portion is provided on the cylinder valve body 42 side and the engaging protrusion is provided on the penetrating portion 115 side. However, as shown in FIG. A notch portion 154 is provided in the hook-shaped portion 117, and an engagement protrusion 156 is provided on the cylinder valve body 42 side, and a retaining surface is formed on the protrusion side end surface 142 of the engagement protrusion 156, and the notch portion 154 is provided. It is also possible to form a contact surface at the bottom surface 138 and to form a retaining portion with the projecting side end surface 142 and the bottom surface 138.

  In the above embodiment, the notches 104, 106, 108, 110, and 112 forming the notches 104, 106, 108, 110, and 112 of the cylinder valve body 42 are used as engaging protrusions on both sides in the circumferential direction. The portions between the engaging protrusions forming the engaging protrusions 116, 118, 120, 122, and 124 can be considered as notches.

Although the embodiment of the present invention has been described in detail above, this is merely an example, and the present invention can constitute the rotation transmitting portion and the retaining portion in a form other than the above example, and the cylinder valve body and It is also possible to configure the drive shaft portion as a combination of materials made of materials different from the above.
In addition, the present invention can be applied to a cylinder type valve device used for applications other than the switching valve device described above, and the present invention can be configured in various modifications without departing from the spirit of the present invention. .

24 Switching handle 34 Switching valve device 42 Cylinder valve body 46, 48 Valve body side opening 50, 54 Case side opening 72 Drive shaft part 102 Bending part 104, 106, 108, 110, 112, 154 Notch part 115 Through part 116, 118, 120, 122, 124 Engaging protrusion 117 Hook-shaped portion 126 Rotation transmitting portion 128, 130, 132 Opening portion 136 Shaft end surface 138 Bottom surface 140 End surface 142 Protruding side end surface 144 Inner surface 146 Detaching surface 150 Contact surface 152 Detaching portion

Claims (6)

(a) a cylindrical cylinder valve body having a valve body side opening for water flow;
(b) a valve case that has a case-side opening for water passage and in which the cylinder valve body is rotatably fitted;
(c) a drive shaft configured to rotate the cylinder valve body by rotating a handle and configured separately from the cylinder valve body;
(d) a rotation transmitting portion that transmits the rotation of the drive shaft portion to the cylinder valve body;
(e) a retaining portion for preventing the drive shaft portion from coming out of the cylinder valve body toward the handle;
In the cylinder type valve device that performs water passage with the valve body side opening and the case side opening in a polymerized state by rotation of the cylinder valve body, while performing water stop in a non-polymerized state,
The drive shaft portion is provided with a penetrating portion that penetrates the inside of the cylinder valve body in the axial direction from one end portion on the handle side to the other end portion on the opposite side,
A notch portion is provided on one of the other end portion of the cylinder valve body and a corresponding rear end portion of the penetrating portion, and an engaging protrusion that engages with the notch portion is provided on the other side. The rotation transmission part is constituted by the protrusion ,
While the cylinder valve body is provided with a retaining surface at a position different from the other end in the axial direction, a contact surface is provided on the penetrating portion so as to abut against the retaining surface in the axial direction. A cylinder type valve device , wherein the retaining portion is constituted by a retaining surface and a contact surface . (a) a cylindrical cylinder valve body having a valve body side opening for water flow;
(b) a valve case that has a case-side opening for water passage and in which the cylinder valve body is rotatably fitted;
(c) a drive shaft configured to rotate the cylinder valve body by rotating a handle and configured separately from the cylinder valve body;
(d) a rotation transmitting portion that transmits the rotation of the drive shaft portion to the cylinder valve body;
(e) a retaining portion for preventing the drive shaft portion from coming out of the cylinder valve body toward the handle;
In the cylinder type valve device that performs water passage with the valve body side opening and the case side opening in a polymerized state by rotation of the cylinder valve body, while performing water stop in a non-polymerized state,
The drive shaft portion is provided with a penetrating portion that penetrates the inside of the cylinder valve body in the axial direction from one end portion on the handle side to the other end portion on the opposite side,
A notch portion is provided on one of the other end portion of the cylinder valve body and a corresponding rear end portion of the penetrating portion, and an engaging protrusion that engages with the notch portion is provided on the other side. The rotation transmission part is constituted by the protrusion ,
The drive shaft portion has a shape that can be inserted into the cylinder valve body from the other end side opposite to the one end portion on the handle side of the cylinder valve body,
The notch and the engagement protrusion are shaped so that the engagement protrusion fits into the notch when the drive shaft portion is inserted into the cylinder valve body from the other end side. ,
Further, the retaining portion has a shaft end surface of the other end portion of the cylinder valve body or a surface projecting radially inward from the inner surface of the cylinder valve body as a retaining surface, and is axially directed to the retaining surface. A cylinder-type valve device comprising a contact surface provided in the penetrating portion and a retaining surface in a state in which the valve is in contact with the cylinder. The cylinder valve body according to claim 2 , wherein the one end portion is bent radially inward, and an inner surface of the bent portion serves as the retaining surface.
The through portion is provided with a contact surface in an axially abutting state against the retaining surface at an axially inner position of the bent portion, and the retaining portion is formed by the retaining surface and the contacting surface. A cylinder type valve device characterized in that it is configured. In Claim 2 , the said rear end part of the said penetration part is provided with the hook-like part projected outward in the diameter direction, and the surface of the handle side of the hook-like part is the contact surface of the retaining part. In addition, a portion of the shaft end surface of the cylinder valve body other than the bottom surface of the notch portion provided on the cylinder valve body or the projecting side end surface of the engagement protrusion is the removal portion in the retaining portion. A cylinder type valve device characterized by being a stop surface. In Claim 2 , The said notch is provided in the said cylinder valve body, the said engaging protrusion is each provided in the said penetration part, and the bottom face of this notch part of the said shaft end surfaces of this cylinder valve body is the said extraction part. Whether it is a stop surface, and the projecting side end surface of the engagement protrusion is the contact surface,
Alternatively, the notch portion is provided in the penetrating portion, the engagement protrusion is provided in the cylinder valve body, and the protruding end surface of the engagement protrusion of the shaft end surface serves as the retaining surface. A cylinder type valve device characterized in that the bottom surface of the notch is the contact surface. In any one of Claims 1-5 , the said penetration part has comprised the cylindrical shape, and is fitted to the said cylinder valve body in the internal fitting state,
The penetrating portion has an axial opening portion opened at the rear end portion, and a radial opening portion penetrating the cylindrical wall at a position corresponding to the valve body side opening. A cylinder type valve device.

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