JP4975462B2 - Packing assembly structure for cylinder type valve - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an assembly structure for a packing in a cylinder valve which can be downsized, wherein the packing is small, is manufactured at low cost, and is easily installed to a valve case. <P>SOLUTION: In the assembly structure for a ring-shaped packing 114 installed around an opening 36 of the valve case 28 of the cylinder valve in which the opening 36 for water connection is formed in the peripheral wall of the valve case 28 in which a cylinder valve body is fitted, a compression retaining portion 130, which axially presses each axial corresponding end of the packing 114, to hold it in an elastically compressed state, is provided axially at each end of the edge of the opening 36 of the valve case 28, in a shape extending perpendicularly to the axis of the valve case 28, so that the packing is retained by the compression retaining portion 130. <P>COPYRIGHT: (C)2008,JPO&amp;INPIT

Description

  The present invention relates to a cylinder type valve having a cylindrical cylinder valve body and a cylindrical valve case outside the cylinder valve body, and more particularly, an assembly structure of a ring-shaped packing mounted around a water passage opening of the valve case. About.

  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 an opening for passing water through each peripheral wall is formed. A cylinder-type valve is used in which the opening of the cylinder valve body is changed in position relative to the opening of the valve case by rotating the valve body, thereby changing the opening of the water channel.

In this cylinder type valve, a sealing ring-shaped packing made of an elastic material is assembled around the opening of the valve case.
Conventionally, the assembly structure shown in FIGS. 23 and 24 is known as the assembly structure.

In FIG. 23, 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.
The cylinder valve body 204 is provided with a retaining hole 214 formed of a small circular hole, and the valve shaft portion 208 is provided with a corresponding retaining protrusion 216, and the valve shaft portion 208 is separated from the cylinder valve body 204 by fitting them. It is secured in the axial direction.

Also, notches 217 for arresting the shaft end in the cylinder valve body 204, the valve stem 208 and protrusions 218 for anti-rotation corresponding thereto is provided, the convex portion in the notch 217 The relative rotation between the valve stem 208 and the cylinder valve body 204 is restricted by the fitting of 218. That is, the cylinder valve body 204 and the valve shaft 208 are configured to rotate integrally.

In FIG. 24, 220 is a packing made of an elastic material as a whole, which is mounted around one opening 202 of the valve case 200 and seals the space between the cylinder valve body 204 and a body body such as a water faucet. Is a ring main body that is elastically pressed against the outer surface of the cylinder valve body 204 and the inner surface of the main body to form a sealing action.
A sheet-like mounting piece 224 extends from the ring body 222 in the axial direction (cylinder axial direction) and the cylinder circumferential direction, and the cylinder valve body extends along the outer peripheral edge of the mounting piece 224. A fitting rib 226 protruding toward the 204 side is formed over the entire circumference of the mounting piece 224.
Here, the entire packing 220 has an arc shape that turns along the outer surface of the cylinder valve body 204.

  On the other hand, a rectangular recess 228 whose front shape corresponds to the packing 220 is formed around the opening 202 in the valve case 200, and the packing 220 is fitted along the outer peripheral edge of the recess 228. A fitting groove 230 corresponding to the rib 226 is formed over the entire circumference.

  In the packing assembly structure shown in FIGS. 23 and 24, the entire packing 220 is fitted into the recess 228 of the valve case 200 and the fitting rib 226 formed along the outer peripheral edge of the packing 220. The packing 220 is assembled to the valve case 200 by pressing it into the corresponding fitting groove 228 of the valve case 200 and elastically fitting it.

In FIG. 23, 230 is a restraining ring made of a hard material, and this restraining ring 230 is fitted on the inner ring circumference of the ring body 222 of the packing 220 to prevent deformation of the packing 220, particularly the ring body 222 in the centripetal direction. To do.
The packing assembly structure shown in these drawings is disclosed in Patent Document 1 below.

  However, in this assembly structure, the packing 220 has to be a large-sized large part, and this increases the size of the cylinder type valve, and the structure is complicated with the packing 220 and the valve case 200. As the cost increases, the assembly of the packing 220 to the valve case 200 becomes difficult, and problems such as the time required for the assembly work are inherent.

JP 2004-11813 A

  The present invention is based on the circumstances as described above, and the packing of the cylinder-type valve is compact, the manufacturing cost is low, the assembly to the valve case is easy, and the cylinder-type valve can be downsized. The purpose is to provide an assembly structure.

Thus, according to the first aspect of the present invention, there is provided a state in which the opening for water passage is made to penetrate through the peripheral wall in and out of the peripheral wall of the cylindrical cylinder valve body and the cylindrical valve case outside the cylinder valve body. A cylinder type valve body that changes the opening of the water 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. A packing assembling structure for assembling a sealing ring-shaped packing made of an elastic material around the opening of the valve case, and at each end in the axial direction of the edge of the opening in the valve case, A shape that extends in a direction perpendicular to the axis of the valve case in a direction penetrating the inner and outer sides of the valve case, holding a compression holding portion that holds each end portion in the corresponding axial direction in a state of being pressed and elastically compressed in the axial direction. And the pressure Together be such so as to hold the packing by the holding portion, the compression holding portion, have a pressing pawl ridges form extending in the axis-perpendicular direction of the direction extending through the peripheral wall in and out, said pressing圧爪packing The end portion is held in an elastically compressed state so as to bite into the end portion in the axial direction.

According to a second aspect of the present invention, a water passage opening is formed in each of the peripheral walls of the cylindrical cylinder valve body and the cylindrical valve case outside the cylinder valve body so as to penetrate the peripheral wall inward and outward. The valve case of the cylinder-type valve body that changes the opening of the water 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. A packing assembly structure in which a ring-shaped packing for sealing made of an elastic material is assembled around the opening, and a shaft corresponding to the packing at each end in the axial direction of the edge of the opening in the valve case. A compression holding portion that holds and holds each end portion in the axial direction in a state of being pressed and elastically compressed in a shape extending in a direction perpendicular to the axis of the valve case in a direction penetrating the peripheral wall inward and outward; Compression holding Optionally with eggplant to hold the gasket, the respective ends of the shaft direction of the packing, only set the tongue-like the compressed portion protruding in the axial direction outwardly from the ring body of the gasket, the The compressed portion is elastically compressed and held in the axial direction by the compression holding portion.

According to a third aspect of the present invention, a water passage opening is formed in each of the peripheral walls of the cylindrical cylinder valve body and the cylindrical valve case outside the cylinder valve body so as to penetrate the peripheral wall inward and outward. The valve case of the cylinder-type valve body that changes the opening of the water 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. A packing assembly structure in which a ring-shaped packing for sealing made of an elastic material is assembled around the opening, and a shaft corresponding to the packing at each end in the axial direction of the edge of the opening in the valve case. A compression holding portion that holds and holds each end portion in the axial direction in a state of being pressed and elastically compressed in a shape extending in a direction perpendicular to the axis of the valve case in a direction penetrating the peripheral wall inward and outward; Compression holding Optionally with eggplant to hold the gasket, the outer surface portion of the side portions and the valve casing between said axial end portion and the end portion of the edge of the opening of the valve casing, the packing It is characterized in that a latching rib that is latched on the corresponding both sides is provided along the edge of the opening.

According to a fourth aspect of the present invention, in the third aspect , a hard constraining ring having a ring shape is fitted to the inner periphery of the ring of the packing so that deformation of the packing in the centripetal direction is prevented by the constraining ring. The constraining ring is provided with an engaging recess that fits in a direction perpendicular to the circumferential direction of the ring with respect to the inner peripheral part of the ring along the outer periphery of the ring of the constraining ring. The fitting recess and the retaining rib of the valve case cooperate to prevent the packing from coming off radially outward from the valve case.

Effects and effects of the invention

As described above, according to the present invention, the compression holding portion is provided in a shape extending in the direction perpendicular to the axial direction at each axial end portion of the opening edge of the valve case, and the corresponding axial direction in the packing is provided by the compression holding portion. The end portion is pressed in the axial direction and is sandwiched and held in an elastically compressed state.
That is, in the present invention, the elasticity of the packing is used to make it elastically compress in the axial direction, and the packing is held based on the repulsive force due to the elastic deformation.
In such an assembly structure of the packing of the present invention, the ring-shaped packing is simply inserted into the valve case by pushing the end portions in the axial direction into a state where the axial ends are elastically compressed by the compression holding portions. Can be assembled.

In the present invention, it is not necessary to provide the packing with an attachment piece extending from the ring main body like the packing shown in FIG. 24 or a fitting rib formed along the outer peripheral edge of the attachment piece. Corresponding to these mounting pieces and fitting ribs, it is not necessary to provide a recess or fitting groove in the valve case, so that the packing can be miniaturized and its shape or structure can be simplified. It is possible to simplify the structure for attaching the packing in the case, and to reduce the manufacturing cost thereof.
Further, the assembly work when assembling the packing to the valve case can be easily performed in a short time.

The ring-shaped packing attached around the water opening of the valve case is formed in an arc shape along the circumferential surfaces of the valve case and the cylinder valve body.
In addition, normally, of the inner end surface of the edge portion of the opening for water passage of the valve case, both side portions between the end portions in the axial direction are radial surfaces centering on the axial center of the valve case. That is, it is a radial surface having a shape opened to the outer surface side.

In this case, when the ring-shaped packing is fitted inward from the outer surface side to the edge of the opening, both side portions between the end portions in the axial direction of the packing are on the corresponding side portions of the valve case. It will easily come off radially outward from the inner end face.
Therefore, even if the compression holding portion is provided in such a portion, the packing cannot be effectively held.

Therefore, in the present invention, a compression holding portion that holds each of the end portions in the axial direction of the packing in the axial direction at the edge portions of the opening of the valve case in the axial direction, and is sandwiched and held in an elastically compressed state. In a shape extending in the direction perpendicular to the axis.
This makes it possible to hold the packing with a strong holding force.

According to a first aspect of the present invention, the compression holding portion is provided with a pressing claw in the form of a ridge extending in the direction perpendicular to the axis, and the pressing claw is bitten into the axial end portion of the packing so that the end portion is in an elastically compressed state. According to the first aspect of the present invention, by pressing the protrusion-shaped pressing claw into the axial end portion of the packing, the axial end portion is locally strongly compressed and deformed. The packing can be firmly held.

On the other hand, according to the second aspect of the present invention, there is provided a tongue-like compressed portion that protrudes axially outward from the ring body of the packing, and the compressed portion is elastically compressed in the axial direction by the compression holding portion to be sandwiched. According to the second aspect of the present invention, a portion different from the ring body, that is, a portion not directly related to the sealing property can be held in a compressed state by the compression holding portion. It is possible to hold the packing without particularly deforming the ring main body that acts as the main body of action, and therefore, it is possible to increase the amount of compressive deformation of the compressed portion and to further strengthen the holding force to the packing. it can.

According to the third aspect of the present invention, the valve case is hung on both side portions between the end portions in the axial direction of the opening of the valve case and on the outer surface side portion of the valve case by the corresponding both side portions of the packing. The retaining rib is provided along the edge of the opening. According to the third aspect , the holding force of the packing by the valve case can be further increased by the retaining action of the retaining rib.

According to a fourth aspect of the present invention, there is provided an engagement recess that fits in a direction perpendicular to the circumferential direction of the ring with respect to the ring inner peripheral portion of the packing along the outer periphery of the ring of the restraining ring that is fitted to the inner ring periphery of the packing. The packing is prevented from coming off radially outward from the valve case by the cooperative action of the engaging recess and the retaining rib of the valve case.

If the both sides of the packing are elastically deformed in the centripetal direction only by preventing the detachment by the above-mentioned latching rib in the valve case, the both sides of the packing are easily detached from the latching rib and protrude outward in the radial direction.
However, if an engagement recess is provided along the outer periphery of the ring of the restraining ring and the engagement recess is engaged with the inner ring peripheral portion of the packing, the deformation of the ring body in the centripetal direction in the packing is restrained. In addition to preventing the ring body from being disengaged from both the inner peripheral side and the outer peripheral side, the holding force for the packing is more effective. Can be strong.

In the present invention, it is desirable that the cross-sectional shape of the ring body of the ring-shaped packing be a perfect circle.
For example, it is conceivable that the cross-sectional shape of the ring main body is an elliptical shape having a major axis in the radial direction of the cross-section (the direction perpendicular to the axis of the valve case), but in this case, the packing is attached in a distorted state. The oval ring body collapses with respect to the outer surface of the cylinder valve body, and when such a collapse occurs, the ring body is attached without being compressed in the radial direction, that is, without being elastically crushed. End up. In this case, the sealing performance is lowered.

  However, if the cross-sectional shape of the ring body is a perfect circle, the ring body is incorporated between the cylinder valve body and the body body such as a faucet in a state where the ring body is elastically compressed in the radial direction without causing such problems. Can be improved.

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, 13, 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 formed there. Is elastically fitted.

  Then, 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 disposed inside 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 in a state where the facing 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 rotation direction of the handle 16 to the valve shaft portion 38 includes 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 they 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 drawing, and the positioning projection 94 is fitted therein, so that the valve shaft portion 38 and the cylinder are fitted. 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).
A flange portion 104 is formed in an annular shape over the entire circumference at the lower end portion of the cylinder valve body 26 in the figure.

  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.

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.

As shown in FIG. 3 and FIG. 14, around the opening 36 of the valve case 28, a rubber or the like that is elastically pressed against the cylinder valve body 26 and the main body body 12 and performs a sealing action therebetween. A ring-shaped packing (hereinafter simply referred to as packing) 114 made of the elastic material is attached.
18 to 22 show the assembly structure of the packing 114 in detail.

The packing 114 has a ring body 117 whose front surface has a major axis in the axial direction (cylinder axial direction) and a cross-sectional shape that is a perfect circle, and a state that protrudes outward in the axial direction at each axial end. And a pair of compressed parts 118 provided in the above.
The packing 114 is curved along the circumferential surfaces of the valve case 28 and the cylinder valve body 26, and the overall shape thereof is an arc shape as viewed in the axial direction as shown in FIG.
Accordingly, the compressed portion 118 has an arc-shaped concave curved surface 120 on the surface on the cylinder valve body 26 side as shown in FIG.

In FIG. 18, reference numeral 116 denotes a hard restraint ring that is fitted to the inner periphery of the ring 114 and prevents deformation of the seal 114 in the centripetal direction. As shown in the partially enlarged view, an engaging recess 124 having a substantially semicircular cross-sectional shape recessed in the centripetal direction is continuously formed along the entire circumference of the ring of the restraining ring 116.
On the other hand, the packing 114 has a semicircular cross-sectional shape along the inner periphery of the ring as shown in FIGS. 18, 19 and 20, and an engaging convex portion 128 protruding in the centripetal direction over the entire periphery. As shown in FIGS. 19 and 20, the engaging convex portion 128 is elastically fitted into the engaging concave portion 124 of the restraining ring 116.

  The opening 36 in the valve case 28 has a shape (frontal shape) corresponding to the packing 114 so that the packing 114 can be fitted, and at each end of the opening 36 in the axial direction, the packing 114 is arranged in the axial direction. There is provided a compression holding unit 130 that holds and holds the compressed and elastically compressed state.

  The inner end surfaces of both side portions between the compression holding portions 130 and 130 at the end portions of the shafts at the edges of the opening 36 are in a radial direction centered on the axis of the valve case 28 as shown in FIG. , Ie, a radial surface 135 radiating from the inside toward the outside toward the outer surface of the valve case 28, and at the outer end of the radial surface 135, ie, the outer surface portion of the valve case 28, A latching rib 134 projecting toward is provided along the edge of the opening 36.

Here, both side portions of the edge of the opening 36 partially have a straight shape in the axial direction, and a latching rib 134 is provided in a straight shape in the axial direction along the straight-shaped portion.
As shown in FIG. 19B, the pair of hooking ribs 134 hooks on both the left and right side portions of the packing 114 to prevent the packing 114 from coming off radially outward.

  Here, when both side portions of the packing 114 fitted into the opening 36 are elastically deformed in the centripetal direction, the both side portions are detached from the retaining ribs 134. In this embodiment, however, the packing 114 is disposed on the inner periphery of the ring of the packing 114. A constraining ring 116 is fitted along and is restrained by the constraining ring 116 that undergoes deformation in the centripetal direction, and the constraining ring 116 is recessed into a semicircular cross section along the outer periphery of the ring. 124 is provided, and the engagement convex portion 128 of the ring body 117 of the ring 114 in the packing 114 is fitted into the engagement concave portion 124, so that the engagement concave portion 124 of the restraining ring 116 and the valve case 28 are The pair of left and right side portions of the packing 114 in the drawing are effectively prevented from coming off from the valve case 28 by the cooperative action with the retaining rib 134.

19 and 22, the upper compression holding portion 130 and the lower compression holding portion 130 have inner end surfaces (lower end surface, upper end surface) recessed in steps upward and downward, respectively, and packing 114 is provided there. The tongue-like compressed portions 118 are fitted inward in the radial direction (in the direction perpendicular to the axis of the valve case 28).
Here, the inner end surfaces of the upper and lower compression holding portions 130, 130 in the figure have a straight shape on the left and right when viewed from the front, and as shown in FIG. (Direction) also has a straight shape. That is, it has a shape extending straight in the horizontal direction, which is the direction perpendicular to the axis in FIG.

In the present embodiment, the inner end surfaces of the pair of compression holding portions 130, that is, the lower surface of the upper compression holding portion 130 and the upper surface of the lower compression holding portion 130, respectively, are straight in the direction perpendicular to the axis. A pressing claw 136 extending in a shape is provided so as to protrude downward and upward, respectively.
In the present embodiment, each end of the packing 114 in the axial direction, that is, the upper end and the lower end in the drawing is elastically compressed downward and upward in the drawing, respectively, and is simply pushed into the edge of the opening 36, and this is simply performed. It can be assembled around the opening 36.

  At this time, the packing 114 has a tongue-like compressed portion 118 at its upper end and lower end, as shown in the enlarged partial views of FIGS. It is held by the pressing claw 136 with elastic compression deformation (at this time, the pressing claw 136 is in a state where it locally bites into the compressed portion 118), and mainly by a repulsive force based on the elastic compression force with elastic deformation of the packing 114. The packing 114 is held by the valve case 28.

  Further, at this time, the retaining ribs 134 of the valve case 28 are engaged with both side portions of the ring body 117 in the packing 114, and furthermore, the engagement of the outer periphery of the restraining ring 116 fitted to the inner periphery of the ring of the ring body 117. The packing 114 is assembled to the valve case 28 in a state in which the recess 114 is prevented from coming off from the valve case 28 by the engaging action of the recess 124 and the engaging protrusion 128 on the inner periphery of the ring body 117.

As described above, in the packing mounting structure of the present embodiment, the packing 114 is simply pushed into a state in which each end portion in the axial direction is elastically compressed in the axial direction by the compression holding portion 130 of the valve case 28. The packing 114 can be easily assembled to the valve case 28.
Further, the packing 114 can be reduced in size, the shape or structure thereof can be simplified, and the structure for assembling the packing 114 in the valve case 28 can be simplified, and the manufacturing cost thereof can be reduced.
Further, the assembly work when assembling the packing 114 to the valve case 28 can be easily performed in a short time.

  In the present embodiment, the compression holding portion 130 that holds each of the end portions in the axial direction of the packing 114 in the axial direction and is elastically compressed is provided in a shape extending in the direction perpendicular to the axis. The holding power against can be increased.

  Further, since the compression holding portion 130 is provided with a protruding claw 136 and the packing 114 is held in a state in which the pressing claw 136 is bitten into the end of the packing 114 in the axial direction, the packing 114 is more strongly fixed. Can be held.

  In addition, a tongue-shaped compressed portion 118 that protrudes outward in the axial direction from the ring main body 117 of the packing 114 is provided, and is elastically compressed in the axial direction and held in a sandwiched state. A portion different from 117 can be held by the compression holding portion 130, and the packing 114 can be held without particularly deforming the ring main body 117 that mainly performs the sealing action. The amount of compressive deformation with respect to can be made large, and the holding force with respect to the packing 114 can be further strengthened.

  Further, on the outer surface side portion of the valve case 28, there are provided hooking ribs 134 that are hooked on the corresponding side portions of the packing 114 to prevent the packing 114 from engaging, and an engagement recess 128 is provided on the outer periphery of the ring of the restraining ring 116. Since the packing 114 is prevented from coming off radially outward from the valve case 28 by the cooperative action of the recess 128 and the retaining rib 134 of the valve case 28, deformation of the ring body 117 in the packing 114 in the centripetal direction. In addition to being blocked by the restraining ring 116, the action of the engaging recess 128 and the latching rib 134 can effectively prevent the packing 114 from coming off and hold it more firmly. .

  Further, in this embodiment, since the cross-sectional shape of the ring main body 117 of the ring-shaped packing 114 is a perfect circle, the ring main body 117 (with a good elastic compression in the radial direction) is connected to the cylinder valve body 26 and the water faucet. When it is sandwiched between the body body 12 and the body body 12 in an elastically compressed state, the ring body 117 can be sufficiently compressed and deformed without causing the ring body 117 to fall, and the sealing performance can be improved.

  Although the embodiments of the present invention have been described in detail above, the present invention departs from the spirit of the present invention, such as being applicable to so-called two-handle type hot water / water mixing faucets and other various types of water faucets and other cylinder type valves. It can be configured in variously modified forms within a range that does not.

It is a figure which shows the water faucet which incorporated the cylinder type valve 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 with the water tap. 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 a cylinder type valve. 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 with the assembly | attachment state alone. It is the perspective view which decomposed | disassembled and showed the cylinder type valve | bulb of FIG. 12 to the valve case, packing, 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, packing, and the valve body assembly | attachment body, and showed 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. 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 decomposed | disassembled and showed the assembly | attachment structure of the packing of embodiment of this invention to the valve case, packing, and a restraint ring. It is a figure which shows the assembly structure of the embodiment in the state which assembled | attached packing and the restraint ring to the valve case. It is side surface sectional drawing of the assembly | attachment structure shown in FIG. It is a single item figure of packing in the cylinder type valve. It is a single-piece figure of the valve case in the cylinder type valve. It is a figure which decomposes | disassembles into each component and shows the assembly | attachment structure of the packing in the conventional cylinder type valve. It is the figure which expanded and showed the principal part of FIG.

DESCRIPTION OF SYMBOLS 10 Water faucet 22 Water channel 26 Cylinder valve body 28 Valve case 30,32,34,36 Opening 114 Packing 116 Restraint ring 117 Ring main body 118 Compressed part 124 Engagement recessed part 130 Compression holding part 134 Stopping rib 136 Pressing claw

Claims (4)

An opening for water passage is formed in each of the peripheral walls of the cylindrical cylinder valve body and the cylindrical valve case outside the cylinder valve body so as to penetrate the peripheral wall inward and outward, and the cylinder with respect to the valve case An elastic material around the opening of the valve case of a cylinder type valve body that changes the opening of the water channel by changing the position of the opening of the cylinder valve body with respect to the opening of the valve case as the valve body rotates A packing assembly structure for assembling a seal ring-shaped packing comprising: a corresponding axial end of the packing at each axial end of the opening edge of the valve case; A compression holding portion that is sandwiched and held in a state of being elastically compressed by pressing in the direction is provided in a shape extending in a direction perpendicular to the axis of the valve case so as to penetrate the peripheral wall inward and outward, and the packing is held by the compression holding portion. Together with you, such as to hold,
The compression holding portion, have a pressing pawl ridges form extending in the axis-perpendicular direction of the direction extending through the peripheral wall and out, the end portion of the pressing圧爪state to bite into the axial end of the packing A structure for assembling packing in a cylinder type valve, wherein the packing is held in an elastically compressed state. An opening for water passage is formed in each of the peripheral walls of the cylindrical cylinder valve body and the cylindrical valve case outside the cylinder valve body so as to penetrate the peripheral wall inward and outward, and the cylinder with respect to the valve case An elastic material around the opening of the valve case of a cylinder type valve body that changes the opening of the water channel by changing the position of the opening of the cylinder valve body with respect to the opening of the valve case as the valve body rotates A packing assembly structure for assembling a ring-shaped packing for sealing consisting of
Compression holding portions that hold the respective end portions in the axial direction of the packing in the axial direction of the edge of the opening in the valve case so as to be sandwiched and elastically compressed by pressing in the axial direction. The valve case is provided in a shape extending in a direction perpendicular to the axis in a direction penetrating the inner and outer sides of the valve case, and the packing is held by the compression holding portion.
Each end of the shaft direction of the packing, only set the tongue-like the compressed portion protruding in the axial direction outwardly from the ring body of the gasket, said該被compression unit in the compressing holder A packing assembly structure in a cylinder type valve characterized by being elastically compressed and held in the axial direction. An opening for water passage is formed in each of the peripheral walls of the cylindrical cylinder valve body and the cylindrical valve case outside the cylinder valve body so as to penetrate the peripheral wall inward and outward, and the cylinder with respect to the valve case An elastic material around the opening of the valve case of a cylinder type valve body that changes the opening of the water channel by changing the position of the opening of the cylinder valve body with respect to the opening of the valve case as the valve body rotates A packing assembly structure for assembling a ring-shaped packing for sealing consisting of
Compression holding portions that hold the respective end portions in the axial direction of the packing in the axial direction of the edge of the opening in the valve case so as to be sandwiched and elastically compressed by pressing in the axial direction. The valve case is provided in a shape extending in a direction perpendicular to the axis in a direction penetrating the inner and outer sides of the valve case, and the packing is held by the compression holding portion.
On both sides of the edge of the opening of the valve case between the end portions in the axial direction and on the outer surface side portion of the valve case, the valve case is hooked on the corresponding side portions to prevent the opening. An assembly structure for packing in a cylinder type valve, wherein a retaining rib is provided along an edge of the opening. In claim 3 , a ring-shaped hard restraint ring is fitted to the inner ring periphery of the packing, and the restraint ring prevents deformation of the packing in the centripetal direction,
The restraining ring is provided with an engaging recess that fits in a direction perpendicular to the circumferential direction of the ring with respect to the inner circumferential portion of the packing along the outer periphery of the ring of the restraining ring. A packing assembly structure in a cylinder type valve, wherein the packing rib prevents the packing from coming off radially outward from the valve case in cooperation with a retaining rib of the valve case.

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