JP2008185158A - Positioning construction of cylinder valve - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a positioning construction which prevents a stopper projection from being damaged even when a handle is rotated with strong force when the stopper projection is formed in a positioning ring for positioning a cylinder valve for the main body of a cock to restrict the rotation of the handle. <P>SOLUTION: In the positioning ring 56 are formed a first engaging projection 76 which projects from the ring outer surface radially outward and rotationally engages with a first engaging recess 78 of the main body 12, and a second engaging projection 80 which axially projects and rotationally engages with a second engaging recess 82 of a valve case 28. In the positioning ring 56 is also formed a stopper projection 84 for restricting the rotation of a rotation drive shaft 58 of the handle 16 side projecting radially inward. The stopper projection 84 is positioned to axially overlap the first engaging projection 76. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a positioning structure for positioning a cylinder-type valve having a cylindrical cylinder valve body and a cylindrical valve case outside the cylinder body in a rotational direction with respect to a body body of a faucet.

  Conventionally, as a valve in a faucet, a cylindrical cylinder valve body is rotatably fitted in an outer cylindrical valve case, and a water passage opening is formed through each peripheral wall. A cylinder-type valve is used in which the opening of the water channel is changed by changing the position of the opening of the cylinder valve body relative to the opening of the valve case by rotating the body.

As a positioning structure for positioning this cylinder type valve in the rotational direction with respect to the main body of the faucet, a positioning ring is mounted across the main body and the valve case of the valve, A device that positions the main body and the valve case is known.
For example, the following patent document 1 discloses an example thereof.
FIG. 19 shows a specific example thereof.

In FIG. 19, reference numeral 200 denotes a body body of a water faucet having a cylindrical shape, which is located at two positions separated by 180 ° in the inner surface side and the circumferential direction (rotation direction) of the axial end portion (left end portion in the figure) on the opening side. A first engagement recess 202 is provided.
Reference numeral 204 denotes a cylinder type valve incorporated into the inside of the body body 200 through an opening at the shaft end. A cylindrical valve body having the same cylindrical shape is rotatably fitted inside the cylindrical valve case 206. .
A valve shaft 208 protrudes from the cylinder valve body to the outside of the valve case 206.

The valve case 206 is provided with second engaging recesses 207 at two locations on the outer surface of the axial end (left end in the figure) and 180 ° apart in the circumferential direction (rotation direction). The stopper convex part 210 which makes | forms the circular arc shape for restrict | limiting rotation is comprised integrally in the state which protrudes in an axial direction.

  212 is a positioning ring for positioning the cylinder type valve 204, more specifically, the valve case 206, in the rotational direction with respect to the body body 200 of the faucet. This positioning ring 212 projects radially from the outer surface of the ring, A first engaging convex portion 214 that engages with the engaging concave portion 202 in the rotational direction, and a first engaging convex portion that protrudes radially inward from the inner surface of the ring and engages with the second engaging concave portion 207 of the valve case 206 in the rotational direction. Each pair has two engaging projections 216.

  The positioning ring 212 engages the first engaging convex portion 214 with the first engaging concave portion 202 of the main body 200 and the second engaging convex portion 216 with the second engaging concave portion 207 of the valve case 206. The main body 200 and the valve case 206 are mounted across the main body 200 and the valve case 206, and the valve case 206 is positioned in the rotational direction with respect to the main body 200 based on the engagement between the engaging convex portions and the engaging concave portions.

The handle 218 has an engagement hole 220 that fits and engages with the valve shaft 208 of the cylinder valve body at the center, and based on the engagement between the engagement hole 220 and the valve shaft 208, The cylinder valve body is rotated by the applied operating force.
The handle 218 also has a groove 224 into which the stopper protrusion 210 integrally formed with the valve case 206 is inserted, and a stopper protrusion 222 for restricting the rotation of the handle 218.
The stopper projection 222 has contact surfaces 226 at both ends in the circumferential direction.

In the case shown in FIG. 19, when the handle 218 is rotated, the cylinder valve body rotates at the valve shaft 208, and when reaching a certain rotational position, one of the pair of contact surfaces 226 on the handle 218 side is Abutting against one of the pair of stopper surfaces 209 at both ends in the circumferential direction of the stopper convex portion 210 of the valve case 206, further rotation of the handle 218 is restricted here.
Further, when the handle 218 is rotated in the reverse direction, the other abutment surface 226 of the handle 218 abuts on the other stopper surface 209 of the stopper convex portion 210, and further rotation is restricted.

  However, in the case of the positioning structure shown in FIG. 19, the rotational force of the handle 218 is transmitted to the stopper convex portion 210 of the valve case 206 and further from the second engagement concave portion 207 of the valve case 206 to the second of the positioning ring 212. Since the rotation of the handle 218 is controlled by being transmitted to the main body 200 from the first engagement portion 214 that is further outward to the engagement convex portion 216, the valve case 206 is operated when the handle 218 is rotated with a strong force. A large force (rotational torque) is applied to the stopper convex portion 210, and the stopper convex portion 210 may be broken or damaged in some cases.

Patent Document 1 also discloses an example in which a stopper projection is provided on the positioning ring itself and the rotation of the handle is regulated by the stopper projection. FIG. 20 shows a specific example thereof.
In FIG. 20, reference numeral 212 denotes a positioning ring having a cylindrical shape that is long in the axial direction. A first engaging convex portion 214 that projects radially outward is provided on the outer surface of the positioning ring, and also projects in the axial direction (downward in the figure). The 2nd engagement convex part 216 is provided in the form to do.
The positioning ring 212 engages the first engagement convex portion 214 with the first engagement concave portion 202 of the faucet body body 200 and the second engagement convex portion 216 with the second engagement of the valve case 204. By engaging with the recess 207, the valve case 204 is positioned in the rotational direction with respect to the main body 200.
In this example, a circular arc-shaped stopper convex portion 222 is integrally formed on a rotational drive shaft 228 on the handle side that rotates integrally with the handle, and both end surfaces in the circumferential direction of the stopper convex portion 222 are contact surfaces 226. Yes.

On the other hand, in the positioning ring 212, a stopper convex portion 210 projecting inward in the radial direction is integrally formed at a position separated in the axial direction with respect to the first engaging convex portion 214, specifically at a lower position in the figure. Further, both end surfaces in the circumferential direction of the stopper convex portion 210 are stopper surfaces 209.
Here, each of the pair of stopper surfaces 209 of the stopper convex portion 210 forms a radial surface centered on the rotation center (axial center) O of the rotation drive shaft 228.

  In FIG. 20, the rotational driving force of the handle, specifically, the force from the rotational driving shaft 228 is transmitted directly to the main body 200 via the positioning ring 212 without passing through the valve case 204. Therefore, the strong rotational force of the handle does not act on the valve case 204.

  However, in the structure shown in FIG. 20, the stopper convex portion 210 of the positioning ring 212 that directly receives the rotational driving force of the handle, and the first outward engagement that fixes the positioning ring 212 to the main body 200 in the rotational direction. Since the convex portion 214 is spaced apart in the axial direction, when the rotational driving force from the rotational driving shaft 228 acts strongly on the stopper convex portion 210, the positioning ring 212 that is long in the axial direction is twisted. In addition to the force acting, there is a problem that the force applied to the handle is not effectively transmitted to the main body 200, and therefore the rotation restricting force on the handle is not efficiently transmitted to the handle.

  Further, in the one shown in FIG. 20, the pair of stopper surfaces 209 of the stopper convex portion 210 in the positioning ring 212 forms a radial surface around the rotation center O of the rotation drive shaft 228, and the stopper action. Since a large shearing force acts on the stopper projection 210 at the time (when the rotation is restricted), there is a risk that the stopper projection 210 may be damaged when the handle is turned strongly.

  In the structure shown in FIG. 20, the rotation drive shaft 228 on the handle side is inserted into the stopper ring 212 upward from the lower side in the drawing, that is, from the cylinder valve body side to the handle side. There is a problem that it is difficult to increase the shaft diameter of the shaft 228, that is, to increase the shaft strength beyond a certain level.

JP 2002-323153 A

The present invention is based on the above circumstances, and even when a stopper projection for restricting the rotation of the handle is provided on the positioning ring, the force from the handle acting on the stopper projection can be efficiently transmitted to the main body. Thus, the object of the present invention is to provide a cylinder type valve positioning structure capable of satisfactorily restricting the rotation of the handle.
Another object of the present invention is to effectively prevent damage such as breakage or chipping of the stopper projection even when the handle is rotated with a strong force.
Another object of the present invention is to increase the shaft strength by increasing the shaft diameter of the rotary drive shaft on the handle side.

  Thus, according to the first aspect of the present invention, a water passage opening that penetrates the peripheral wall inward and outward is formed at predetermined positions in the circumferential direction of the cylindrical cylinder valve body and the outer cylindrical valve case, respectively. Position of the cylinder valve that changes the opening of the water channel by changing the position of the opening of the cylinder valve body relative to the opening of the valve case by the rotation of the cylinder valve body relative to the main body body of the faucet The main body is provided with a first engaging recess and the valve case is provided with a second engaging recess, while projecting radially outward from the outer surface of the ring in a rotational direction with respect to the first engaging recess. A positioning ring having a first engaging convex portion that engages and a second engaging convex portion that protrudes in the axial direction and engages in the rotational direction with respect to the second engaging concave portion. And place the positioning ring The valve case is positioned in the rotational direction with respect to the main body, and the positioning ring is disposed at a position straddling the main body and the rotational drive shaft on the handle side, and the inner surface of the positioning ring. A stopper convex portion protruding radially inward is provided on the handle, and a contact portion provided in a state of protruding radially outward on the rotational drive shaft is brought into contact with the stopper convex portion in the rotational direction. The stopper protrusion is provided at a position where at least a part of the stopper protrusion overlaps the first engagement protrusion in the axial direction.

  According to a second aspect of the present invention, in the first aspect, the stopper convex portion is provided at the same position in the rotational direction with respect to the first engaging convex portion.

  According to a third aspect of the present invention, in any one of the first and second aspects, the stopper surface that is a contact surface of the stopper convex portion with the abutting portion has a radial direction centered on the rotation center of the rotation drive shaft. With respect to the surface, the surface is inclined in a direction away from the radial surface toward the rotational direction of the rotary drive shaft from the root position of the stopper convex portion toward the radially inner tip. To do.

  According to a fourth aspect of the present invention, in the third aspect of the present invention, the abutment surface of the abutment portion is an inclined surface having a shape corresponding to the stopper surface.

  According to a fifth aspect of the present invention, in any one of the first to fourth aspects, the positioning ring is configured to insert the rotary drive shaft into the inside from the side opposite to the cylinder valve body. To do.

Effects and effects of the invention

  As described above, the present invention provides the positioning ring with the stopper convex portion for restricting the rotation of the handle, and the stopper convex portion is positioned in the first ring for positioning with the main body of the faucet in the positioning ring. It is provided at a position where at least a portion overlaps the axial direction with respect to the joint convex portion.

According to the present invention, when the rotation of the handle is restricted by applying the stopper convex portion of the positioning ring to the contact portion of the rotational drive shaft on the handle side, the stopper convex portion and the first engaging convex portion are at least partially. Therefore, the positioning ring can be prevented from receiving a torsional force due to the rotational force applied to the handle, and the rotational force from the handle is directly applied to the first engagement from the stopper projection. Further, it can be directly transmitted to the main body of the faucet through the first engaging convex portion.
That is, the force from the handle can be transmitted to the main body with high efficiency, so that the rotation of the handle can be controlled well and stably.
In the present invention, it is particularly desirable that the stopper convex portion overlaps the entire first engaging convex portion in the axial direction.

In the present invention, it is also desirable to provide the stopper convex portion at the same position in the circumferential direction (rotating direction) with respect to the first engaging portion (claim 2).
By doing so, the force from the handle applied to the stopper convex portion is transmitted to the first engaging convex portion more efficiently, and further directly from the first engaging convex portion to the body body of the faucet. I can tell you.

  Next, a third aspect of the present invention is directed to radiating the stopper surface of the stopper convex portion from the root position of the stopper convex portion toward the radially inner end with respect to the radial surface about the rotation center of the rotation drive shaft. This is a surface inclined in a direction away from the direction surface in the rotational direction of the rotary drive shaft.

  As described above, if the stopper surface is a radial surface, a large shearing force acts on the stopper projection when the stopper is operated, and when the handle is rotated with a strong force, the stopper projection is caused by the shearing force. There is a problem that tends to cause destruction and damage.

However, in this third aspect, since the stopper surface is inclined with respect to the radial surface, when the abutting portion of the rotary drive shaft hits the stopper surface and a rotational force is applied, the force is applied. The stopper convex portion can be a force in a direction of compressing radially outward.
That is, the force from the contact portion can be used as a radially outward compressive force with respect to the stopper convex portion.
Thereby, it can prevent effectively that a stopper convex part is cut | disconnected, destroyed or damaged with the force at the time of rotation control of a handle.

In addition, according to the third aspect, particularly when the first engagement convex portion and the stopper convex portion are provided at the same position in the circumferential direction according to the second aspect, the force from the contact portion of the rotary drive shaft is The first engagement convex portion on the outer surface of the positioning ring can be effectively acted as a force for pressing the first engagement concave portion of the main body body, and the force from the handle is transmitted to the main body body more efficiently. be able to.
That is, the supporting force for restricting rotation by the main body can be efficiently applied to the handle side, so that the rotation of the handle can be controlled more favorably.
Further, according to the third aspect, it is possible to effectively avoid the damage of the first engaging convex portion due to the force for restricting the rotation of the handle.
In this case, the stopper surface may not be a completely flat surface, but may be a slightly curved surface.

  Next, according to a fourth aspect of the present invention, the abutting surface of the abutting portion of the rotary drive shaft is brought into contact with the stopper surface over the entire surface (the entire surface overlapping in the circumferential direction). According to claim 4, the contact area between the stopper surface and the contact surface can be increased, and the surface pressure can be reduced. Damage can be prevented more effectively, and the rotational force from the rotary drive shaft can be transmitted to the main body more efficiently, and the control force for the handle rotation by the main body can be more effectively exerted on the handle side. be able to.

  Next, the fifth aspect of the present invention has a structure in which the rotary drive shaft is inserted into the positioning ring from the side opposite to the cylinder valve body. The axial strength can be made higher.

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 in FIG. 13, 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

The cylinder valve body 26 is connected to a valve shaft portion 38 which is a separate body from the cylinder valve body 26 in an integrally rotated state.
The valve shaft portion 38 is formed with a narrow ring groove 42 as shown in FIGS. 4, 6, 11, and 15, and there is a retaining ring (here, elastically elastic). E ring) 44 is elastically fitted.

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

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

4 and 5, reference numeral 58 denotes a rotation drive shaft (made of resin in the present embodiment) on the handle 16 side that rotates together with the handle 16, and here is configured separately from the handle 16 and rotates integrally with the handle 16. Linked to state.
The rotary drive shaft 58 transmits the operating force applied to the handle 16 to the valve shaft portion 38 to rotate it integrally.
The rotary drive shaft 58 is provided with a male serration portion 60 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 rotation drive shaft 58 rotates integrally with the handle 16 by the engagement between the male serration portion 60 and the female serration portion 62.

On the other hand, as shown in FIGS. 5 and 6, the rotary drive shaft 58 has a fitting hole 64 on the right end side in the drawing, 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 rotary drive shaft 58 are fastened in the axial direction. ing.
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, in the fitting hole 64 of the rotary drive shaft 58 fitted to this, a rectangular engagement portion 72 corresponding to the tip end portion of the valve shaft portion 38 and a protrusion 70 are formed on the left side in FIG. Corresponding concave grooves 74 are provided, and the engaging portions 72 and the concave grooves 74 are engaged with the rectangular tip portion of the valve shaft portion 38 and the protrusions 70 and engaged in the rotational direction. Based on these engagements, the operating force in the rotational direction transmitted to the rotary drive shaft 58 is transmitted to the valve shaft portion 38, and 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. The first engaging protrusions 76 projecting outward in the direction, and the pair of first engaging protrusions 76 are formed on the body body 12 of the faucet 10 as shown in FIGS. The position of the positioning ring 56 itself in the rotational direction with respect to the main body 12 is determined by axially inserting it into the corresponding first engaging recess 78 formed on the inner surface and engaging in the circumferential direction, that is, the rotational direction. It is like that.

The positioning ring 56 also has a pair of second engaging protrusions 80 protruding in the axial direction at the same circumferential position as the first engaging protrusion 76, which are shown in FIGS. 10, the positioning ring 56 is inserted into the valve 24, more specifically, a pair of corresponding second engaging recesses 82 of the valve case 28 in the axial direction and engaged in the circumferential direction, that is, in the rotational direction. The position in the rotational direction with respect to the valve 24 is determined.
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.

The inner surfaces of the pair of second engaging convex portions 80 are provided with hooking claws (holding portions) 88 protruding inward in the radial direction. The hooking claws 88 allow the positioning ring 56 to be a valve. 24.
Specifically, as shown in FIG. 11, when the positioning ring 56 is pushed axially into the valve 24, the hooking claw 88 elastically climbs over the retaining ring 44 attached to the ring groove 42 of the valve 24. Then, when the retaining claw 88 gets over the retaining ring 44, the retaining claw 88 is hooked in the axial direction with respect to the retaining ring 44. As a result, the positioning ring 56 is assembled to the valve 24.
As shown in the partially enlarged views of FIGS. 7 and 11 (II), the positioning ring 56 is pushed in the axial direction in the drawing (downward in FIG. 7) to each latching claw 88, so that the second engagement An inclined surface 89 is provided on the distal end side in the push-in direction when the joint convex portion 80 is inserted into the second engagement concave portion 82 of the valve case 28 in the axial direction so as to get over and guide the retaining ring 44.

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

More specifically, the rotary drive shaft 58 that rotates integrally with the handle 16 to rotationally drive the valve shaft portion 38 includes a pair of abutting portions 86 that project radially outward as shown in FIGS. 12, when the handle 16 is rotated as shown in FIG. 12, the abutment portions 86 abut on the pair of stopper projections 84 of the positioning ring 56, thereby rotating the handle 16. Is regulated within a certain angle range.
12A shows the fully closed state of the handle 16, and FIG. 12B shows the fully opened state of the handle 16.

Here, the stopper convex portion 84 is provided over the entire axial width of the ring main body in the positioning ring 56, and the outer peripheral first engaging convex portion 76 also extends substantially over the entire width of the ring main body. Strictly speaking, it is provided over substantially the entire width of the ring body from the left end to the right end of FIG. 7B.
That is, the stopper convex portion 84 is provided so as to overlap (overlap) in the axial direction with respect to the entire first engaging convex portion 76.
Further, the stopper convex portion 84 is provided at the same circumferential position with respect to the first engaging convex portion 76.
Here, each of the pair of stopper convex portions 84 includes stopper surfaces 84-1 and 84-2 at both ends in the circumferential direction.

On the other hand, the contact portion 86 of the rotary drive shaft 58 has contact surfaces 86-1 and 86-2 at both ends in the circumferential direction as shown in FIGS.
When the rotary drive shaft 58 rotates with the handle, the abutting surface 86-1 abuts against the stopper surface 84-1 so that the rotation in the forward direction is restricted, and the abutting surface 86-2 becomes the stopper surface 84-2. Rotation in the reverse direction is regulated there by abutting against.
FIG. 8B shows a state where the handle is fully rotated in the opening direction and the rotation is restricted at the maximum opening position.

  In this embodiment, as shown in FIG. 9 (a), the stopper surface 84-1 is located from the root position with respect to the axial center of the rotation drive shaft 58, that is, the radial surface centered on the rotation center O. As it advances toward the radially inner tip side, the inclined surface is inclined so as to be away from the radial surface in the rotational direction of the rotary drive shaft 58.

Similarly, as shown in FIG. 9B, the abutting surface 86-1 also advances from the radially outer tip to the radially inner side with respect to the radiation surface centered on the rotation center O. The inclined surface is oriented away from the radial surface in the rotational direction of the rotary drive shaft 58.
The same applies to the other stopper surface 84-2 of the stopper convex portion 84 and the other contact surface 86-2 of the contact portion 86 of the rotation drive shaft 58.
Here, the stopper surface 84-1 and the contact surface 86-1 and the stopper surface 84-2 and the contact surface 86-2 are all inclined at the same angle.

In this embodiment, as shown in FIG. 9C, when the rotation of the rotation drive shaft 58, that is, the handle 16, is restricted by applying the stopper surface 84-1 to the contact surface 86-1, the stopper surface 84- 1 and the inclined surface of the contact surface 86-1, the rotational force from the rotational drive shaft 58 does not act as a shearing direction force on the stopper convex portion 84, as indicated by an arrow in FIG. It acts as a force in a direction to compress the stopper convex portion 84 radially outward.
Further, as a result, the rotational force applied through the abutting portion 86 is directed to directly press the first engaging portion 76 on the outer peripheral side of the positioning ring 56 against the circumferential side surface of the first engaging recess 72 in the main body 12. Work as a force.

In this embodiment, as shown in FIGS. 2, 3, 4, and 5, the rotary drive shaft 58 is a cylinder from the opposite side of the positioning ring 56 to the cylinder valve body 26 (left side in the figure). It is inserted into the positioning ring 56 on the valve body 26 side (on the right side).
That is, the rotary drive shaft 58 does not have to pass through the positioning ring 56, and can therefore be configured with a large shaft diameter.

The assembly structure of the cylinder valve body 26 and the valve stem 38 is specifically shown in FIGS.
As shown in these drawings, the valve shaft portion 38 made of resin is provided with a large-diameter circular male fitting portion 90 at the lower end in FIGS. 16 and 17, and this male fitting portion. 90 is fitted into the inside of the cylinder valve body 26 made of metal from the opening at the upper end in the figure, and the male fitting portion 90 is a female fit at the upper end part (shaft end part) of the cylinder valve body 26 in the figure. The joint 92 is elastically fitted.
Here, on the outer peripheral surface of the male fitting portion 90, as shown in FIG. 16 (b), a pair of positioning projections 94 project radially outward at two locations separated by 180 ° in the circumferential direction. It is integrally formed in a state.

  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 38 and the cylinder are fitted. A rotational direction position with the valve body 26 is defined.

  As shown in FIG. 18A, 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 shaft end on the upper side in the figure is curved radially inward with an equal plate thickness toward the opening until reaching the opening at the shaft end, and the inside of the curved portion is the engagement claw over the entire circumference. 98.

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. 16C).
A flange portion 104 is formed in an annular shape at the lower end portion of the cylinder valve body 26 in the drawing.

  On the other hand, the outer peripheral surface of the large-diameter male fitting portion 90 of the valve shaft portion 38 protrudes radially outward at three locations spaced approximately 120 ° in the circumferential direction as shown in FIG. Engaging projections 108 are provided. The 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. 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. 17, 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.

  14 and 15, 114 is mounted on the edge of the opening 36 of the valve case 28, and is made of an elastic material such as rubber that seals the space between the cylinder valve body 26 and the main body 12 of the faucet in a watertight manner. A ring-shaped packing 116 is a hard constraining ring that is fitted in the inner peripheral side of the ring-shaped packing 114 and prevents deformation of the packing 114 in the centripetal direction.

In this embodiment, as shown in FIG. 16 (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, the engagement protrusions 108 are engaged with the engagement claws 98 of the cylinder valve body 26 as shown in FIG. 17, 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 described above, according to the present embodiment, when the rotation of the handle is restricted by applying the stopper convex portion 84 of the positioning ring 56 to the contact portion 86 of the rotation drive shaft 58 on the handle 16 side, the stopper convex portion 84 is Since the entire first engaging convex portion 76 is provided at a position overlapping the axial direction, the positioning ring 56 can be prevented from receiving a torsional force due to the rotational force applied to the handle 16. The rotational force can be transmitted directly from the stopper convex portion 84 to the first engaging convex portion 76 and further directly to the main body 12 of the faucet through the first engaging convex portion 76.
That is, the force from the handle 16 can be transmitted to the main body 12 with high efficiency, whereby the rotation restriction on the handle 16 can be performed satisfactorily and stably.

  In addition, since the stopper convex portion 84 is provided at the same position in the circumferential direction (rotation direction) with respect to the first engaging convex portion 76, the force from the handle 16 applied to the stopper convex portion 84 is more efficiently applied to the first engagement. It can be transmitted to the joint convex portion 76 and further transmitted from the first engaging convex portion 76 to the body body 12 of the faucet.

  Further, the stopper surfaces 84-1 and 84-2 of the stopper convex portion 84 are radially inward from the root position of the stopper convex portion 84 with respect to the radial surface around the rotation center O of the rotation drive shaft. Since the surface is inclined away from the radial surface in the rotational direction of the rotary drive shaft 58, the contact portion 86 of the rotary drive shaft 38 abuts against the stopper surfaces 84-1 and 84-2. When the rotational force is applied to the stopper convex portion 84, the force can be applied as a force for compressing the stopper convex portion 84 radially outward, thereby restricting the rotation of the handle 16. It can prevent effectively that the stopper convex part 84 is damaged by force.

In addition, since the first engaging convex portion 76 and the stopper convex portion 84 are provided at the same position in the circumferential direction, the force from the abutting portion 86 of the rotation drive shaft 58 is effectively applied to the first engagement of the main body 12. It can be made to act as the force of the direction which presses the 1st engagement convex part 76 with respect to the joint recessed part 78, and the force from the handle | steering-wheel 16 can be transmitted to the main body 12 more efficiently.
That is, the support force for restricting the rotation by the main body 12 can be applied to the handle side with high efficiency, and the rotation of the handle 16 can be regulated more favorably.
Further, it is possible to effectively avoid the damage of the first engaging convex portion 76 due to the force for restricting the rotation of the handle 16.

  Further, the abutting surfaces 86-1 and 86-2 of the abutting portion 86 of the rotary drive shaft 58 are brought into contact with the stopper surfaces 84-1 and 84-2 over the entire surface (the entire surface overlapping in the circumferential direction). Therefore, the contact area can be increased, the surface pressure can be reduced, damage to the stopper projection 84 can be more effectively prevented, and the rotational force from the rotary drive shaft 58 can be prevented. Can be transmitted to the main body 12 more efficiently, and the force for regulating the rotation of the handle by the main body 12 can be favorably applied to the handle 16 side.

  Further, since the rotary drive shaft 58 is inserted into the positioning ring 56 from the side opposite to the cylinder valve body 26, the shaft diameter of the rotary drive shaft 58 can be increased and the shaft strength is increased. Can be strength and.

  Although the embodiment of the present invention has been described in detail above, this is merely an example, and the present invention can be configured in various forms without departing from the spirit of the present invention.

It is a figure which shows an example of the faucet which is an application object of this invention in an external appearance state. It is a plane sectional view of the faucet of FIG. It is side surface sectional drawing of the water tap of FIG. It is the perspective view which decomposed | disassembled and showed the positioning structure of the cylinder type valve of one Embodiment of this invention 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 the embodiment. It is the figure which showed the assembly | attachment relationship of the positioning ring of FIG. 7, the main body of a faucet, and a rotational drive shaft. It is an effect explanatory view in the embodiment. 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. FIGS. 8A and 8B are action explanatory views showing a rotation restricting action on the handle of the positioning ring of FIG. 7, in which FIG. 7A shows a fully closed state and FIG. It is the figure which showed the cylinder type valve alone in the assembled state. It is the perspective view which decomposed | disassembled and showed the cylinder type valve of FIG. 13 to the valve case and the cylinder valve body. It is the perspective view which decomposed | disassembled the cylinder type valve | bulb of FIG. 13 into the valve case and the cylinder valve body, and showed it 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 a 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 showed an example of the positioning structure in the conventional cylinder type valve. It is the figure which showed the prior art example of the positioning structure different from FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Water tap 12 Body body 22 Water channel 24 Cylinder type valve 26 Cylinder valve body 28 Valve case 30 Opening 56 Positioning ring 58 Rotation drive shaft 76 1st engagement convex part 78 1st engagement recessed part 80 2nd engagement convex part 82 Second engaging recess 84 Stopper convex portion 84-1 and 84-2 Stopper surface 86 Abutting portion 86-1 and 86-2 Abutting surface

Claims (5)

A water passage opening that penetrates the peripheral wall inward and outward is formed at predetermined positions in the circumferential direction of the cylindrical cylinder valve body and the outer cylindrical valve case, and the rotation of the cylinder valve body with respect to the valve case A positioning structure for positioning a cylinder type valve that changes the opening of a water passage by changing the position of the opening of the cylinder valve body relative to the opening of a valve case relative to the main body of the faucet, A first engaging convex portion that protrudes radially outward from the outer surface of the ring and engages the first engaging concave portion in the rotational direction, while providing the first engaging concave portion with the second engaging concave portion in the valve case; A positioning ring having a second engaging projection that protrudes in the axial direction and engages with the second engaging recess in the rotational direction is mounted across the main body and the valve case, and the positioning ring The valve case through the body body The positioning ring is arranged at a position straddling the main body and the rotational drive shaft on the handle side, and projects radially inward from the inner surface of the positioning ring. A stopper protrusion is provided, and the rotation of the handle is restricted by abutting the stopper protrusion in a rotational direction with a contact portion provided in a state of projecting radially outward from the rotational drive shaft. And
And the stopper convex part is provided in the position which at least one part overlaps with an axial direction with respect to the said 1st engagement convex part, The positioning structure of the cylinder type valve | bulb characterized by the above-mentioned.   2. The positioning structure for a cylinder type valve according to claim 1, wherein the stopper convex portion is provided at the same position in the rotational direction with respect to the first engaging convex portion.   3. The stopper projection according to claim 1, wherein a stopper surface that is a contact surface of the stopper projection with respect to the abutting portion is a radial surface centered on the rotation center of the rotation drive shaft. Positioning of a cylinder type valve characterized in that the surface is inclined in a direction away from the radial surface toward the rotational direction of the rotary drive shaft from the root position of the portion toward the distal end on the radially inner side. Construction.   4. The positioning structure for a cylinder type valve according to claim 3, wherein the contact surface of the contact portion is a surface inclined in a shape corresponding to the stopper surface.   5. The positioning of a cylinder type valve according to claim 1, wherein the positioning ring is configured to insert the rotary drive shaft into the inside from the side opposite to the cylinder valve body. Construction.

Images