JPH04298929A - Operating switch for water place - Google Patents

Abstract

PURPOSE:To improve the sealing property of the bellows for feeding air and easily replace the bellows in an operating switch for a water place with a structure turning a contact on or off with the air pressure. CONSTITUTION:An air pipe 6 is connected to the bottom section of a switch case 1, an operating shaft 12 is pierced into a sliding bearing 10 in the switch case 2, a push button 14 is fitted at its upper section, and a bellows storage case 18 is freely coupled below the sliding bearing 10. The bellows 20 are arranged in the bellows storage case 18, a hook section 30 at the opening end of the bellows 20 is formed on one side of either the inner periphery of a tube body 22 constituting the bellows storage case 18 or the outer periphery of a bellows stop tool 24, and a pinch section 36 pinching the bellows 20 toward the hook section 30 is provided on the other side.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention relates to operating switches used in water places, such as bath jet devices that spray foamy water into bathtubs, and in particular, to operating switches that use air pressure to turn on and off contacts. This relates to a structure that allows off-operation.

0002

[Prior Art] Generally, a jet device for a bath is provided with a water place operation switch for controlling on/off an air pump and a circulation pump for spouting foamy water into the bathtub. The operating switch for a water place has its operating section located at a location such as the upper flange of the bathtub, taking into account the convenience of bathers. Therefore, since the operation part of this water facility operation switch is constantly exposed to hot water and humidity, from the standpoint of safety, we adopted a structure that uses air pressure to turn on and off the contacts located outside the bathroom. be done.

FIG. 4 is a sectional view showing the structure of a conventional operating switch for water fountains of this type.

This operation switch a has a switch case b that is cylindrical with a bottom, and a guide hole c is formed in the bottom of the switch case b. A sliding bearing d is fixed with a screw, an operating shaft e is inserted through the sliding bearing d, a push button f is attached to the upper end of the operating shaft e with a screw g, and a push button f is attached to the lower end of the operating shaft e. A bellows pressing portion h is formed.

Furthermore, a bellows j with an upper bottom is disposed inside the slide bearing d, and a switch case b
An air delivery tool k is inserted through the guide hole c,
An air pipe r is connected to the lower part of this air delivery tool k,
Further, the upper part of the air delivery tool k protrudes in the outer circumferential direction to form a bellows fitting part m, and the lower end part of the bellows j is fitted into this bellows fitting part m. Furthermore, a compression spring n and a spring guide p having a convex cross section are provided between the bellows j and the air delivery device k, respectively. In addition, q is an upper edge flange of the bathtub, s is a packing, and t is a hexagonal nut for fixing the switch case b to the upper edge flange q.

In the above configuration, when the push button f is pushed downward, the bellows pressing part h at the lower part of the operating shaft e compresses the bellows j, and this air pressure is transmitted through the air delivery tool k and the air pipe r in sequence. The signal is transmitted to the outside air switch, turning on the contact.

[0007]

However, the conventional structure described above has the following problems.

■ Since the bellows j has a structure in which it is simply fitted into the bellows fitting part m of the air delivery tool k and seated on the inner bottom of the switch case b, its sealing performance is insufficient. This prevents inconveniences such as moisture invading the floor surface on the back side of the bathtub through the guide hole c, and air pressure leaking when bellows j is pressed down, making it impossible to turn the air switch on and off reliably. This may occur.

[0009] Furthermore, if the bellows j is damaged or old and needs to be replaced, press the push button f.
After removing the bellows j and the sliding bearing d, it is necessary to remove the bellows j fitted into the bellows fitting part m of the air delivery tool k by inserting your hand from the upper opening side of the switch case b. At this time, since the air pipe r is directly connected to the air delivery tool k, if the air delivery tool k is pulled up too much, the connection between the two k and r will be disconnected. Therefore, it is necessary to attach and remove the bellows j while the air delivery tool k is slightly pulled up to prevent it from coming off the air pipe r, that is, inside the switch case b, which greatly reduces the work efficiency when replacing the bellows j. bad.

0010

[Means for Solving the Problems] The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to improve the sealing performance of the bellows for air delivery of the operation switch, and to facilitate the replacement of the bellows. It allows you to do it.

[0011] Therefore, the operating switch for a water place of the present invention has a cylindrical switch case with a bottom, and the bottom of the switch case is formed with a connecting part for air piping having an air delivery hole. A sliding bearing is fixed inside the case, an operating shaft is inserted through this sliding bearing, a push button is removably attached to the upper end of the operating shaft, and a bellows press is attached to the lower end of the operating shaft. A bellows storage case is loosely fitted below the sliding bearing inside the switch case, and a bellows with a bottom at the top is disposed inside the bellows storage case. It consists of a body and a bellows stopper screwed to the lower opening side of the cylindrical body, and an insertion hole for the operating shaft is formed in the upper part of the cylindrical body, and the bellows stopper is connected to the air delivery hole. An air exhaust hole is formed, and further,
A latching part for the open end of the bellows is formed on one side of the inner periphery of the cylinder and the outer periphery of the bellows stopper, and a clamping part that pinches the bellows toward the latching part is formed on the other side. The structure is as follows.

0012

[Function] According to the above structure, the lower opening end of the bellows is sandwiched between the inner surface of the inner case and the outer surface of the bellows stopper, so that the sealing performance against the bellows is improved. Water is reliably prevented from entering surfaces, etc. Furthermore, there is no leakage of air pressure when the bellows is pressed, and the air switch can be turned on and off reliably.

Furthermore, when it becomes necessary to replace the bellows, the push button and the sliding bearing can be removed, and the entire storage case can be replaced regardless of the connection of the air piping and with the bellows still stored. Since the bellows can be taken out from the switch case, the bellows can be replaced extremely easily.

[0014]

[Embodiment] Figs. 1 and 2 are cross-sectional views of an operation switch for a water place according to an embodiment of the present invention. Fig. 1 shows a state in which the push button is not pressed, and Fig. 2 shows a state in which the push button is pressed. ing.

The operation switch 1 for a water place according to this embodiment has a cylindrical switch case 2 with a bottom, and a connection part 8 for an air pipe 6 having an air delivery hole 4 is formed at the bottom of the switch case 2. has been done. A slide bearing 10 is screwed and fixed inside the switch case 2, and an operating shaft 12 is inserted through the slide bearing 10. A push button 14 is fitted into the upper end of the operating shaft 12. , is elastically fixed by a disc spring 15, and the operating shaft 1
A bellows pressing part 16 is formed at the lower end of the ring 2. Note that 17 is a ventilation hole formed in a part of the slide bearing 10.

On the other hand, a bellows storage case 18 is loosely fitted below the slide bearing 10 inside the switch case 2, and a bellows 20 with a bottom at the top is disposed within the bellows storage case 18.

The bellows storage case 18 includes a bottomed cylindrical body 22 and a bellows stopper 24 screwed to the lower opening side of the cylindrical body 22.

A through hole 25 for the operating shaft 12 is formed in the upper part of the cylinder 22, and a water discharge hole 27 is formed in a part of the peripheral wall. On the other hand, the bellows stopper 24 is formed with an air exhaust hole 26 that communicates with the air delivery hole 4, and a spring receiving part 28 is formed on the top, and a hook part 30 is formed on the outer periphery of the top. The lower opening end of the bellows 20 is hooked to this hook portion 30. Moreover, between the bellows 20 and the bellows stopper 24,
A spring guide 32 and a compression spring 34 each having a convex cross section are arranged, and the compression spring 34 is seated on the spring receiving portion 28 . The vertical length of the spring guide 32 is determined from the distance between the bottom surface of the bellows pressing part 16 and the top surface of the bellows stopper 24, which will be described later, assuming that the push button 14 is in contact with the top of the slide bearing 10. It is also set in advance to be longer.

On the other hand, the lower inner periphery of the cylindrical body 22 is formed thicker so as to have a smaller diameter than the outer periphery of the bellows 20, and has a clamping part 36 that clamps the bellows 20 toward the hooking part 30. has been done. This clamping part 36 is a bellows stopper 2
4 into the cylindrical body 36, the bellows 20
The cross section is formed in a slightly tapered shape so that the thickness increases as it goes upward so that the clamping force increases gradually.

Note that 38 is the upper edge flange of the bathtub, 40 is the packing, and 42 is the upper edge flange 38 of the switch case 2.
A hexagonal nut 44 is an O-ring for fixing to.

In the above structure, since the lower open end of the bellows 20 is clamped by the clamping part 36 of the inner cylinder 22 and the hooking part 30 of the bellows stopper 24, the bellows 20
is securely sealed.

Therefore, even if hot water enters the interior of the bellows storage case 18 through the ventilation hole 17 of the sliding bearing 10 and the insertion hole 25 of the bellows storage case 18, the bellows 2
The water does not penetrate into the water and is discharged from the water discharge hole 27 through a water drain pipe (not shown). Furthermore, with this configuration, there is no leakage of air pressure when the bellows is pressed, and the air switch can be turned on and off reliably.

Furthermore, when it becomes necessary to replace the bellows 20, by removing the push button 14 and the sliding bearing 10, the bellows 20 can be replaced regardless of the connection of the air piping 6 and with the bellows 20 still in the stored state. with bellows storage case 1
Since the entire switch 8 can be taken out from the switch case 2, the bellows 20 can then be replaced extremely easily by removing the bellows stopper 24.

Furthermore, as described above, the vertical length of the spring guide 32 disposed inside the bellows 20 is the same as the bottom surface of the bellows pressing portion 16 when the push button 14 is assumed to be in contact with the top of the slide bearing 10. Since the distance is set in advance to be longer than the distance from the top surface of the bellows stopper 24, when fitting the push button 14 onto the operating shaft 12 after replacing the bellows 20, the push button 14 must be pressed as shown in FIG. Since the spring guide 32 contacts the bellows stopper 24 by the time the button 14 contacts the top of the plain bearing 10, the push button 14 can be reliably fitted onto the operating shaft 12.

In the above embodiment, the bellows stopper 24 is provided with the hooking part 30 of the bellows 20, and the inner cylinder 22 is provided with the clamping part 36 of the bellows 20. 3, the inner circumferential surface of the inner cylinder 22 is made to protrude to form a hooking part 50 for the bellows 20, while the top of the bellows stopper 24 is made a flat surface, which serves as a clamping part 52 for the bellows 20. Similar effects can be obtained even with a configuration in which:

[0026]

[Effects of the Invention] According to the present invention, the following effects are achieved.

(2) Since the lower open end of the bellows is sandwiched between the inner surface of the cylindrical body constituting the bellows storage case and the outer surface of the bellows stopper, the sealing performance of the bellows is improved. Therefore, it is possible to reliably prevent moisture from entering, and since there is no leakage of air pressure when the bellows is pressed, it is possible to reliably turn on and off the switch.

[0028] When it becomes necessary to replace the bellows, simply remove the push button and the sliding bearing, and the entire bellows storage case can be replaced regardless of the connection of the air piping and with the bellows still stored. Since the bellows can be pulled out from the switch case, the bellows can be replaced extremely easily.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of an operation switch for a water place according to an embodiment of the present invention, showing a state in which a push button is not pressed.

FIG. 2 is a cross-sectional view of the operation switch for water fountains according to the embodiment of the present invention, showing a state in which the push button is pressed.

FIG. 3 is a sectional view of an operation switch for a water place showing a modification of the present invention.

FIG. 4 is a sectional view of a conventional operating switch for a water place.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1... Water field operation switch, 2... Switch case, 4... Air delivery hole, 6... Air piping, 8... Connection part, 10... Sliding bearing, 12... Operating shaft, 14... Push button, 16... Bellows pressing part, 18... Bellows storage case, 20... Bellows,
22... Cylindrical body, 24... Bellows stopper, 25... Operation shaft insertion hole, 26... Air discharge hole, 30, 50... Latching part, 36,
52...Pinching part.

Claims (1)

[Claims] Claim 1: The switch case (2) has a cylindrical shape with a bottom, and the bottom of the switch case (2) has an air delivery hole (
4) is formed, and a sliding bearing (10) is fixed inside the switch case (2), and an operating shaft is attached to this sliding bearing (10). (12) is inserted through the operating shaft (12), a push button (14) is removably attached to the upper end of the operating shaft (12), and a bellows pressing portion (16) is formed at the lower end of the operating shaft (12). On the other hand, a bellows storage case (18) is located below the slide bearing (12) inside the switch case (2).
) is loosely fitted into the bellows storage case (18), and a bellows (20) with a bottom at the top is disposed in the bellows storage case (18). A bellows stopper (24) is screwed to the lower opening side of the cylinder (22), and an insertion hole (25) for the operating shaft (12) is formed in the upper part of the cylinder (22). The stopper (24) is formed with an air discharge hole (26) that communicates with the air discharge hole (4), and further has an air discharge hole (26) that communicates with the air discharge hole (4).
A hooking part (30) for the open end of the bellows (20) is formed on either one of the inner peripheral part of the bellows (2) and the outer peripheral part of the bellows stopper (24), and the other side is formed with a hook part (30) for the open end of the bellows (20). )
An operation switch for a water place, characterized in that a pinching part (36) is provided for pinching the water against the hooking part (30).