JP4683370B2 - Water discharge device - Google Patents

Description

  The present invention relates to a water discharger having a holding device for a water discharger that can be pulled out and installed in a kitchen, a washstand, a bathroom, and the like.

  As shown in FIG. 13, a conventional water discharger installed on a washbasin generally has a portion to be locked 1 facing upward, and a serrated locking portion 2 called serration. And engagement with the locked portion 1. In such a case, it is often impossible to rotate while attached, and if it is possible to rotate, the number of parts increases, the workability at the time of assembly becomes poor, and the cost increases. In addition, because of the upward direction, water in use or water from the hose often enters from the connection port of the faucet body. Therefore, some kind of water entry prevention mechanism was necessary.

  On the other hand, when the locked portion is horizontal or downward, it is advantageous for preventing water entry, but a mechanism for holding the water discharger on the support tube is necessary so that the water discharger does not come off due to gravity. Therefore, a groove is provided on the inner peripheral surface of the water discharger side connection port, and further, the connection port end surface is made into a slit, and the groove provided on the water discharger side connection port and the protrusion provided around the support tube side connection port are fitted. There was something that was effective in holding the water discharger when facing down. (For example, refer to Patent Document 1).

  In such a case, if a hand touches the water discharger accidentally and a downward load is applied, the slit of the connecting part widens and the fitting is released, and the water discharger comes off the support tube, or the water discharger and the support tube There was a problem that there was a gap between them. Moreover, when the fitting of the water discharger and the support tube is tightened to solve the above problem, there is also a problem that the operation force for attaching and detaching the water discharger increases. In this way, the water discharger and the support tube are fixed by fitting the molded products, but due to the molding variation of each molded product, loose or strong fittings are produced, or fitting by the elastic force of the resin is There was a drawback that adjustment was very time-consuming.

JP 2003-147821 A

The present invention has been made to solve the above problems, and an object of the present invention is to reliably hold the water discharger on the support tube regardless of the mounting direction of the water discharger, and to attach and detach the optimal water discharger. It is to be able to easily set the operating force.

In order to achieve the above object, the invention according to claim 1 is characterized in that a water discharger is connected to the tip of a hose inserted through the support tube, the support tube and the end of the water discharger are detachable, One of the water dischargers is a water discharge device provided with a cylindrical protrusion that protrudes in the same direction as the hose, and the other has a cylindrical engagement portion that engages with the outer periphery of the protrusion. The engaging portion has a protrusion-like leaf spring, the outer periphery of the protrusion has a groove portion, and when the engaging portion engages with the outer periphery of the protrusion, the protrusion-like leaf spring is and engaging the groove, opening with said water discharge device includes a water discharge inner the hose is connected, anda water discharge cover covering the spouting inner, wherein the water discharge inner mounting the protruding leaf spring A mounting base portion having a one-side open shape that can replace the protruding leaf spring from the side is formed. The water discharge cover is formed with a guide rib that contacts the open side of the mounting base portion, and when the water discharge cover and the water discharge inner are assembled and assembled, the guide rib slides toward the open side of the mounting base portion. It is to touch .
Thereby, a water discharger can be reliably hold | maintained to a support pipe by setting it as a structure which a leaf | plate spring is detachably elastically contacted to the groove part of the protrusion part outer periphery. In addition, when the leaf spring of the water discharger is damaged, it is possible to replace only the leaf spring, and it is possible to prevent the leaf spring from falling off due to a spring when the water discharger is attached or detached.

According to a second aspect of the present invention, one of the outer peripheral end surface portion of the projecting portion and the end surface connecting portion of the engaging portion connected to the outer peripheral end surface portion is provided with a concave portion, and the other is provided with a convex portion. That is.
As a result, the water discharger can be rotated and held in the direction desired by the user, and at the time of the rotation operation, rotation resistance can be given by engagement of the concave and convex portions, and a click feeling can be produced.

The invention according to claim 3 is provided with an O-ring at an outer peripheral end surface portion of the projecting portion or an end surface connecting portion of the engaging portion connected to the outer peripheral end surface portion, and the outer peripheral end surface portion and the end surface That is, the connecting part is elastic.
Thereby, the water discharger can be rotated and held in the direction desired by the user, and a click feeling can be produced by applying rotational resistance by the O-ring during the rotation operation.

In order to achieve the above object, the invention according to claim 4 is characterized in that a water discharger is connected to the tip of a hose inserted through the support tube, and the support tube and the end of the water discharger are detachable, One of the water dischargers is a water discharge device provided with a cylindrical protrusion that protrudes in the same direction as the hose, and the other has a cylindrical engagement portion that engages with the outer periphery of the protrusion. The engaging portion has a steel ball that is elastically held by a C-shaped leaf spring locked on its outer peripheral surface and slightly protrudes inward from the inner peripheral surface, and a groove portion on the outer periphery of the protruding portion. And when the engaging portion engages with the outer periphery of the protruding portion, the steel ball is locked in the groove portion .
Thereby, it is possible to reliably hold the water discharger on the support pipe by adopting a structure in which the steel ball elastically held by the leaf spring is detachably elastically contacted with the groove on the outer periphery of the protruding portion.

  According to the present invention, it is possible to reliably attach and detach the water discharger to / from the support tube with an optimum operating force, and there is an effect that the water discharger cannot be easily detached or a gap is formed.

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

  Hereinafter, the present invention will be described in detail based on illustrated embodiments. FIG. 2 is an example of a faucet A attached to a vanity. FIG. 2A is a schematic cross-sectional view of the state in which the water discharger is pulled out, and FIG. 2B is a schematic cross-sectional view of the state in which the water discharger is held by the support tube. The water discharger 31 to which the shower hose 34 is connected can be attached to the support tube 32 at the end, and can be used by being pulled out through the shower hose 34.

  The support pipe 32 of the water faucet A is configured with a protrusion 33 that is a connection part with the water discharger 31 in a horizontal or downward direction, and water or a hose when the water discharger 31 is pulled out from the support pipe 32 and used. This prevents the water adhering to the surface of the water from entering from the connection port of the support tube 32 easily. Further, the protrusion 33 of the support tube 32 has a convex shape as shown in FIG. 2 and is formed with an inner diameter substantially equal to the outer diameter of the shower hose 34 through which it is difficult for water to enter. There are almost no gaps to penetrate.

  FIG. 3 shows a simple exploded external view of the water discharge tool 31. The water discharger 31 includes a water spray plate outer cylinder 41, a water spray plate inner cylinder 42, a water discharge inner 43 and a water discharge cover 44, and the shower hose 34 is connected to the water discharge inner 43 and together with the water discharge cover 44 via a screw 45. Fixed to. The water spray plate outer cylinder 41 and the water spray plate inner cylinder 42 are connected to the water discharge inner 43 by screws 46, and the water spray plate outer cylinder 41 is provided with a switching lever 411 that can change the water discharge form.

  The water discharge inner 43 is provided with a mounting base portion 47 to which at least one leaf spring 48, which is a protruding elastic body, can be mounted. From the mounting base portion 47 toward the inner peripheral radial direction of the water discharge inner 43. An insertion hole 49 is provided so that the peak portion of the leaf spring 48 can protrude. The leaf spring 48 is installed on the mounting base portion 47 in a state where the peak portion projects from the insertion hole 49 and is stretched in the leg opening direction of the leaf spring 48. The leaf spring 48 has a plate thickness t, a height h, an opening leg angle α, and a width a as shown in FIG. 1, and each dimension value is determined by the size and shape of the water discharger 31. In this embodiment, the dimensions are as follows: plate thickness t: 0.25 mm, height h: 9 mm, open leg angle α: 80 degrees, width a: 5 mm. By changing each dimension value of the leaf spring 48, the elastic coefficient of the leaf spring 48 is changed, and the attaching / detaching operation force of the water discharger 31 can be changed. That is, when the elastic coefficient of the leaf spring 48 is increased, the attachment / detachment force of the water discharger 31 is increased, and when it is decreased, the attachment / detachment force is decreased.

  Next, a method for mounting the leaf spring 48 will be described. Since the mounting base portion 47 of the water discharge inner 43 is open on one side as shown in FIG. 3, the leaf spring 48 is inserted from the open side. The mountain top portion is inserted into the insertion hole 49 from below the water discharge inner 43 and is slid on the mounting base portion 47 while being pushed and spread in the direction of the legs. Since the leaf spring 48 is elastically mounted on the mounting base portion 47, it does not drop off easily, but since the mounting base portion 47 is open on one side as described above, the mold configuration and insertion and assembly are simplified and advantageous. However, on the other hand, there is a possibility that the leaf spring 48 may fall off due to a spring or the like when the water discharger is attached or detached. Therefore, in order to prevent the leaf spring 48 from falling off, the guide rib 40 is provided in the direction of the water discharge cover 44, and when the water discharge cover 44 and the water discharge inner 43 are assembled and assembled, the guide rib 40 just slides on the lower surface of the mounting base 47. The prevention portion is configured so as to prevent the leaf spring 48 from falling off in the mounted state. Of course, contrary to this, when the mounting direction of the leaf spring is from above, there is no problem even if the water discharge cover 44 is provided so that the guide rib contacts the upper surface of the mounting base. Such a leaf spring mounting structure is very convenient because replacement / maintenance work becomes easy when the attachment / detachment operation force of the water spouting device becomes weak or the leaf spring 48 is damaged depending on the number of times of use. Furthermore, the maintenance does not need to replace the entire water discharger 31, and only the leaf spring 48 needs to be replaced, so that the necessary minimum parts are replaced, and there is a cost merit for the user.

  An upper cross-sectional view of FIG. 2 is shown in FIG. FIG. 4A shows a case where the water discharge tool is pulled out, and FIG. 4B shows a case where the water discharge tool is attached. In the case of this embodiment, the two leaf springs 48 are mounted at positions opposite to each other, and as shown in FIG. 4, the engaging portion 481 (the inner peripheral surface of the water discharge inner 43) that engages the outer periphery of the protruding portion 33. The peak portion of the leaf spring 48 protrudes in the center direction.

  On the other hand, the protruding portion 33 of the support tube 32 is a convex cylindrical body through which the shower hose 34 can be inserted, and its outer diameter is slightly smaller than the inner diameter of the protruding portion 33 of the water discharge inner 43 and can be fitted to the water discharge inner 43. Moreover, since the internal diameter of the protrusion part 33 is slightly smaller than the outer diameter of the shower hose, it is difficult for water splashing during use or water transmitted through the hose to enter from the connection port.

  FIG. 5 is a cross-sectional view of the protrusion 33 of the support tube 32. As shown in FIG. 5, the outer periphery 62 at the tip of the protrusion 33 of the support tube 32 is R-processed, so that when the water discharger 31 is attached to the support tube 32, the insertion into the support tube 32 is smoothly guided. It can be done. Further, as can be seen in FIG. 4, a groove portion 61 is provided around the outer peripheral surface of the protruding portion 33 of the support tube 32, and the peak portion of the leaf spring 48 is the groove portion 61 when the water discharger 31 and the support tube 32 are completely attached. It comes to fit in. If this groove part dimension is set to be slightly smaller than the peak top dimension of the leaf spring 48, the leaf spring 48 will elastically contact the protrusion 33 of the support tube 32 in the mounted state, and the connecting portion between the water discharger 31 and the support tube 32 will become elastic. There is no rattling or gaps and the quality is improved. Furthermore, the mounting completion can be confirmed by the click sound and click feeling of the leaf spring 48 at the time of mounting.

  Furthermore, since the fitting shape is not a peculiar shape like a sawtooth, but a cylindrical shape, the water discharger 31 can be swung in the mounted state. Further, when it is desired to restrict the rotation of the swinging movement, a convex portion 36 is provided on the end surface of the water discharge inner 43 as shown in FIG. A groove 35 may be provided. The rotation restriction angle of the water discharger 31 can be adjusted by the arc length of the concave groove 35. By providing such a convex portion on the end surface of the water discharge inner 43, it is impossible to install the water discharge device 31 to the support tube 32 with the water discharge port facing upward, so that it is impossible to attach it to the end completely. We can expect prevention effect of wearing.

As described above, when the attachment / detachment mechanism of the water discharger 31 and the support tube 32 is not fitted with the elastic force of the resin but with the leaf spring 48, the attachment / detachment operation force of the water discharger 31 is adjusted by adjusting the elastic coefficient of the leaf spring 48. It can be changed easily. FIG. 7 is a reference example when the elastic portion 82 is integrally formed with resin instead of the leaf spring in the water discharge inner 81 .

  With the above configuration, the water discharger 31 held by the support tube 32 is held by the support tube 32 in a state of being positioned by the fitting of the leaf spring 48, and is directed toward the direction desired by the user. It attaches to 32 and water is discharged toward the direction which a user desires from the water discharging tool 31. FIG. And the water discharging tool 31 can be swung and swung according to a user's use condition.

  In this embodiment, the protruding portion 33 is provided on the support tube 32 side, and the engaging portion 481 is provided on the water discharger 31 side. However, the protruding portion 33 is provided on the water discharger 31 side, and the engaging portion 481 is provided on the support tube 32 side. It doesn't matter.

  Next, a second embodiment will be described. FIG. 8 is a schematic cross-sectional view when the mounting position of the leaf spring is changed. The same components as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted. In a state where the water discharger 90 is attached to the support tube 32 as shown in FIG. 8, the leaf spring 91 attached to the water discharge inner 92 is separated from the position where it does not fit into the groove 61 provided around the protruding portion 33 of the support tube 32. If the leaf spring mounting base portion 93 is provided on the water discharge inner 92, the leaf spring 91 is always in elastic contact with the outer peripheral surface of the protruding portion 33 of the support tube 32 except for the groove portion 61. The water discharger 31 can be held by increasing the rotation resistance so that the water discharger does not rotate naturally due to the increase or decrease in the amount of water or the reaction at the time of water discharge.

As another means for increasing the rotation resistance, a hemispherical convex portion 101 is provided on the outer peripheral end surface portion 100 of the projecting portion 33 as shown in FIG. 9A, and the end surface connecting portion of the water discharge inner 43 as shown in FIG. When a plurality of hemispherical recesses 102 are provided in 110, a rotational resistance can be obtained by the engagement of the concave and convex hemispheres when the water discharger 90 rotates. When the water discharger 90 is attached to the support tube 32, it is elastically contacted by the leaf spring 91 attached to the water discharge inner 92 so as to be pressed against the support tube 32 side. A click feeling can also be produced by the engagement of 101 and the recess 102. Of course, there is no problem even if the hemispherical concave portion 102 is set in the protruding portion 33 of the support tube 32 and the convex portion 101 is set in the end surface portion of the water discharge inner 92. At this time, polyacetal or PBT resin, which is resistant to wear, is suitable as the material of both.
Further, as shown in FIG. 9B, the O-ring 103 is fitted into the O-ring groove provided in the outer peripheral end surface portion 100 of the protruding portion 33 of the support tube 32, and the water discharger 90 is attached to the support tube 32 and rotated. 9A, since the water discharger 90 is elastically contacted so as to be pressed against the support tube 32, the end surface connection part 110 (the end surface connection part 110 in FIG. Rotation resistance can be obtained by rotating in contact with the O-ring 103. Of course, even if the O-ring 103 is provided only on the end face connecting portion 110 side, the rotational resistance can be obtained as in the present embodiment.

Next, a reference example will be briefly described. FIG. 10 is an external perspective view of an attaching / detaching portion showing another embodiment using a steel ball, FIG. 11 is a sectional perspective view of FIG. 10, (a) is a state before mounting, (b) is It is a state figure after mounting. As shown in FIGS. 10 and 11, the steel ball 113 is held in a state of slightly protruding inward from the inner peripheral surface of the water discharge inner 111, and a through inclined hole that does not fall out to the inner peripheral surface side has an outer periphery of the water discharge inner 111. A plurality of surfaces are provided. A groove 115 is provided on the outer peripheral surface of the C-shaped plate spring 112 so that the C-shaped plate spring 112 can be locked, and the steel ball 113 contained in the through-inclined hole is prevented from falling off to the outer peripheral side. The spring 112 is elastically held from the outer peripheral direction. A groove 115 is provided around the protrusion 114 of the support tube 32 as in the above embodiment. The steel ball 113 is pushed in the outer circumferential direction when the water discharge inner 111 and the protruding portion 114 of the support tube 32 are in a locked state, and the locked state is reached when the steel ball 113 is fitted into the groove 115.

Even in the locked state, the C-shaped leaf spring 112 pushes the steel ball 113 so that it is not rattled. If hemispherical grooves 13 into which steel balls 113 are fitted instead of the concave grooves 115 are provided at regular intervals as shown in FIG. Resistance can be obtained. Further, the detachability operability of the water discharger 90 can be adjusted by changing the number of the steel balls 113 and the elastic coefficient of the C-shaped leaf spring 112 that holds the ball.

It shows one shape of a leaf spring, (a) is a front view, (b) is a side view. BRIEF DESCRIPTION OF THE DRAWINGS The 1st Example of this invention is shown, (a) is a schematic sectional drawing of the state which pulled out the water discharging tool, (b) is a schematic sectional drawing of the state which made the supporting tube hold | maintain the water discharging tool. 1 is an exploded external perspective view showing a first embodiment of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS The 1st Example of this invention is shown, (a) is a schematic sectional drawing of the state which pulled out the water discharging tool, (b) is a schematic sectional drawing of the state which made the supporting tube hold | maintain the water discharging tool. It is sectional drawing of the protrusion part of a support pipe. The example of rotation control of a water discharging tool is shown, (a) is sectional drawing and rear view of a water discharging tool, (b) is the front view and sectional drawing of a support tube. It is sectional drawing of the water discharging tool at the time of integrally forming with resin as a substitute of a leaf | plate spring. It is a schematic sectional drawing at the time of changing the mounting position of a leaf | plate spring. 1 shows an embodiment of a support tube showing a mechanism for providing a rotation resistance, wherein (a) is a cross-sectional view of the support tube capable of producing a click feeling, and (b) is a support tube equipped with an O-ring. FIG. It is an external appearance perspective view of the attachment / detachment part which showed another Example using the steel ball. The cross-sectional perspective view of a reference example is shown, (a) is the state before mounting | wearing, (b) is the state figure after mounting | wearing. It is an external appearance perspective view of the connection part of another support pipe. It is a perspective view which shows a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 31 ... Water discharging tool 32 ... Support pipe 33 ... Protruding part 34 ... Shower hose 43 ... Water discharging inner 44 ... Water discharging cover 47 ... Plate spring mounting base part 48 ... Plate spring 49 ... Insertion hole 61 ... Groove part

Claims (3)

A water discharger is connected to the tip of the hose inserted through the support tube, and the end of the support tube and the water discharger is detachable. One of the support tube and the water discharger is coaxial with the hose. A water discharge device provided with a cylindrical engaging portion that protrudes into the outer periphery and a cylindrical engaging portion that engages with the outer periphery of the protruding portion on the other side,
The engaging portion has a protruding leaf spring, and the outer periphery of the protruding portion has a groove portion. When the engaging portion engages with the outer periphery of the protruding portion, the protruding leaf spring becomes the groove portion. and engaging in,
The water discharger includes a water discharge inner to which the hose is connected, and a water discharge cover that covers the water discharge inner. The water discharge inner is provided with the protrusion-like leaf spring, and the protrusion-like shape from the open side. A mounting base portion having a one-side open shape capable of exchanging a leaf spring is formed, and a guide rib that contacts the opening side of the mounting base portion is formed on the water discharge cover, and the water discharge cover and the water discharge inner are fitted and assembled. In some cases, the water discharge device is characterized in that the guide rib slides and contacts the open side of the mounting base .   2. The outer peripheral end surface portion of the projecting portion and the end surface connecting portion of the engaging portion connected to the outer peripheral end surface portion are each provided with a concave portion, and the other is provided with a convex portion. Water discharge device.   The outer peripheral end surface portion of the projecting portion or the end surface connecting portion of the engaging portion connected to the outer peripheral end surface portion is provided with an O-ring, and the outer peripheral end surface portion and the end surface connecting portion are elastically contacted. The water discharging apparatus according to claim 1.

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