JPH0516655U - Fluid discharge device - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a fluid discharge device having a structure in which a spring is attached to the outside of a cylinder that does not come into contact with the fluid that is discharged. [Structure] Cylinder 1 communicating with spray head 10
Is fitted into a cap 2 attached to the mouth of a fluid storage container, and a vertically movable valve shaft 3 is placed in the cylinder 1.
Is provided to form a valve on the valve seat 4 that opens and closes by contacting and separating the valve shaft 3, and a hollow piston guide 5 that fits watertightly on the valve shaft 3 and moves up and down along the valve shaft 3. A through hole 6 is formed in the piston guide 5, a first piston 7 is formed integrally with the piston guide 5, and a second piston 8 interlocking with the first piston is formed.
In a fluid discharge device which is watertightly and slidably inserted between the piston guide 5 and the inner peripheral surface of the cylinder 1, the piston guide 5 is connected to a spray head 10 and the spray head 10 is biased upward. A spring 13 was inserted between the spray head 10 and the cap 2, and a valve stopper 14 that abuts against the valve shaft 3 and regulates the operating range of the valve shaft 3 is provided in the passage of the valve shaft 3.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a discharge device attached to a container for storing fluid such as liquid, and more particularly to a fluid discharge device having a structure in which a spring that reciprocates a piston does not come into contact with the fluid.

[0002]

[Prior Art]

 Conventionally, a fluid discharge device capable of discharging a fluid and attached to the mouth of a storage container has a structure as shown in FIG. 3, for example.

In this fluid discharge device, a cylinder 55 having an upper end opening communicating with the outside air is fitted into a container cap 56, and a vertically moving valve shaft 57 is provided in the cylinder 55 and a valve seat 58 is provided. A valve that opens and closes by contacting the end of the valve shaft 57 is formed. In addition, a lower end portion is fitted to the valve shaft 57, and a first piston 52 is provided integrally with a hollow piston guide 51 that moves up and down along the valve shaft 57. The first piston 52 is the piston. Along with the guide 51, a spring 59 provided between the first piston and the valve shaft 57 in the cylinder 55 is biased to the upper position.

On the other hand, the second piston 53 is slidably inserted between the piston guide 51 and the inner peripheral surface of the cylinder 55 in a watertight manner between them, and the second piston 53 is at the upper stop position. The seal portion 60 is formed in constant contact with the first piston 52 to prevent the contents from leaking to the outside.

Then, in conjunction with the push-down operation of the spray head 54 fitted in the upper portion of the container cap 56, first, the piston guide 51 and the first piston 52 descend to close the valve, and the first piston 52 and the second piston 53 separate. After the seal portion 60 is opened, it is pressed by the end portion of the stem 61 that pushes down the piston guide 51, and the second piston 53 also descends, so that the cylinder internal pressure rises. Then, the fluid in the cylinder passes through the seal portion 60 and the hole 63 provided in the piston guide 51, is sent into the piston guide 51, reaches the nozzle portion 64 of the spray head 54 through the cylinder opening portion, and is discharged. Is. Further, in this discharge device, the cap 56 is screwed onto the mouth portion of the container and is detachably attached to the mouth portion of the container.

[0006]

[Problems to be solved by the device]

 However, the above-described conventional fluid discharge device has the following problems. That is, a spring 59 that biases the first piston 52 and the piston guide 51 upward is provided in the cylinder 55. Therefore, since the spring 59 is in the passage of the contents of the container equipped with the discharge device and is constantly in contact with the fluid to be discharged, the spring 59 is rusted and corroded to shorten the life of the spring 59. Further, the contents of the container passing through the cylinder 55 may be soiled.

[0007]

[Means for Solving the Problems]

 The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a fluid discharge device having a structure attached to the outside of a cylinder that does not contact a fluid that discharges a spring.

The present invention has the following configuration in order to achieve the above object. In this device, a cylinder 1 communicating with a spray head 10 is fitted into a cap 2 that is attached to the mouth of a fluid container, and a vertically movable valve shaft 3 is provided in the cylinder 1. A valve seat 4 is provided with a valve for opening and closing by contacting and separating the valve shaft 3, and a hollow piston guide 5 which is fitted in the valve shaft 3 in a watertight manner and moves up and down along the valve shaft 3 is provided. A through hole 6 is bored in the piston guide 5, and a first piston 7 is formed integrally with the piston guide 5, while a second piston 8 interlocking with the first piston is connected to the piston guide 5 and the cylinder. 1 is a fluid discharge device which is watertightly and slidably inserted between the piston guide 5 and a spray head 10, and a spring 13 for urging the spray head 10 upward. A valve stopper 14 that is inserted between the valve shaft 3 and the cap 2 and contacts the valve shaft 3 to regulate the operating range of the valve shaft 3 is provided in the passage of the valve shaft 3.

[0009]

[Action]

 In this discharge device, since the piston guide 5 is connected to the spray head 10 and a spring for biasing the spray head 10 upward is inserted between the spray head 10 and the cap 2, the spring 13 discharges when operating. No contact with fluid.

Further, since the valve stopper 14 that comes into contact with the valve shaft 3 and restricts the operating range is provided in the passage of the valve shaft 3, the rising range of the valve shaft 3 is limited, which is unnecessary from the cylinder 1. Never jump out.

[0011]

【Example】

 Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a sectional view showing the internal structure of the fluid discharge device of the present invention. A cylinder 1 having a lower end connected to a suction pipe 16 is fitted into an upper surface opening portion of a cap 2 having a screw portion 19 which is screwed into an opening portion (not shown) of a fluid storage container and formed on an inner side surface. There is. A cylindrical connecting portion 20 is continuously provided at the upper opening of the cap 2.

A hollow piston guide 5 is provided above the cylinder 1, and an upper opening portion 15 of the piston guide 5 has a rod-shaped first system 17 and a first system 17 via a connecting portion 18a, 18b. It is connected to the inner upper part of the cylindrical spray head 10 by two stems 11, and a discharge port 23 is formed in the upper part of this spray head 10 so that the tip of the nozzle 24 faces the outside. The discharge port 23 can be opened and closed by a nozzle stopper 25, and the inside of the cylinder 1 communicates with the outside air through a nozzle 24.

Further, a coil spring 13 for urging the spray head 10 upward is inserted between the spray head 10 and the cap 2. The upper end of the coil spring 13 abuts on the upper surface of the recess 26 inside the spray head 10, and the lower end of the coil spring 13 is a cylindrical receiving portion 28 provided in the cap 2 and engaging with the upper end portion 27 of the cylinder 1. It is in contact with the inner step 29.

The lower end of the spray head 10 and the upper end of the spring receiving portion 28 form an undercut fitting portion 30 having a ridge so as to hold the spray head 10 so as not to come off from the cap 2. ing. The undercut fitting portion 30 can be provided between the lower end of the spray head 10 and the upper end of the tubular connecting portion 20. However, according to this embodiment, the spray head 10 and the tubular connecting portion 20 can be connected. Since no large step is formed on the outer peripheral surface of the portion 20, the degree of freedom in external design is increased.

On the other hand, a valve shaft 3 which is vertically movable and has a large diameter in the lower part is inserted into the cylinder 1, and the inner peripheral surface of the cylinder 1 below the valve shaft 3 is tapered to form a valve seat 4 And a valve 31 is formed. The valve 31 opens and closes with the lower end of the valve shaft 3 coming into and out of contact. A convex portion 32 is formed on the lower side surface of the valve shaft 3, and a valve stopper 14 fixed to the inner peripheral surface of the cylinder 1 is provided above the convex portion 32 at a slight interval. When the valve shaft 3 rises, the convex portion 32 comes into contact with the lower end of the valve stopper 14, so that the operating range of the valve shaft 3 is restricted.

By the way, the lower end of the piston guide 5 located above the cylinder 1 is watertightly fitted to the upper end of the valve shaft 3. The piston guide 5 is vertically movable along the valve shaft 3, and a through hole 6 is formed near the lower end of the piston guide 5.

A first piston 7 is formed integrally with the piston guide 5 so as to be continuous with the lower end thereof. The first piston 7 is held above the cylinder 1 together with the piston guide 5.

On the other hand, the ring-shaped second piston 8 is watertightly and slidably inserted between the piston guide 5 and the inner peripheral surface of the cylinder 1, and the second piston 8 is At the upper stop position where the engaging end 33 of the receiving portion 28 that engages with the upper end of the cylinder 1 abuts on the stepped portion 22 formed to project, the through hole 6 is closed to maintain the airtightness in the cylinder 1. , And is in contact with the first piston 7. The contact portion between the first piston 7 and the second piston 8 forms a seal portion 9 that seals the inside of the cylinder 1.

Further, the end portion 11 a of the second stem 11 is located above the second piston 8 with a gap 12 1. Next, the operation of this discharge device will be described.

First, when the spray head 10 is pushed down, the piston guide 5 descends inside the cylinder 1, the first piston 7 also descends, and the seal portion 9 opens. When the descent continues, the valve 31 is closed this time, and the tip 11a of the second stem abuts against the second piston 8 and pushes it down, so that the internal pressure of the cylinder 1 rises. Therefore, the fluid in the cylinder 1 passes through the through hole 6 and the piston guide 5, reaches the spray head 10, and is discharged from the tip of the nozzle 24.

When the spray head 10 is released, the spray head 10 is returned to its original position by the biasing force of the coil spring 13, and the first piston 7 and the second piston 8 are also returned to the positions before the operation and the through hole 6 is formed. Since the valve is closed, the valve 31 is opened and the internal pressure of the cylinder 1 is reduced. Then, the contents inside the container (not shown) are sucked up into the cylinder 1 via the suction pipe 16, so that the operation similar to the above can be repeated by pushing down the spray head 10 again.

In the present embodiment, as shown in FIG. 2, in order to make the biasing force of the coil spring 13 sufficiently act on the seal portion 9, the undercut fitting portion 30 at the upper end of the cylindrical connecting portion 20 and the lower end of the spray head 10 is provided. In addition, a clearance 21 is provided. Further, between the second stem 11 and the engaging end 33 of the receiving portion 28, there is provided a retaining portion 35 having a stepped portion in contact with each other, and similarly, a clearance 34 is also generated in this portion.

Further, even if the connecting portions 18a and 18b are disconnected, the undercut fitting portion 30 or the front retaining portion 35 prevents the spray head 10 from coming off. In this case, since the sealing of the seal portion 9 can be released, the nozzle stopper 25 may be closed so that the fluid as the content does not leak from the nozzle 24.

[0024]

[Effect of the device]

 As described above, according to the present invention, the piston guide 5 is connected to the spray head 10, and the spring 13 for urging the spray head 10 upward is inserted between the spray head 10 and the cap 2, so that the spring is the container. Since it does not come into contact with the fluid that is the contents, it is possible to prevent corrosion due to rust on the spring and contamination of the fluid that is discharged.

Further, since the valve stopper 14 that comes into contact with the valve shaft 3 and restricts the operating range of the valve shaft 3 is provided, the valve shaft 3 may unnecessarily jump out of the cylinder 1 and hinder the operation of the valve 31. Nor.

[Submission date] September 6, 1991

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0012

[Correction method] Change

[Correction content]

A hollow piston guide 5 is provided above the cylinder 1, and an upper opening portion 15 of the piston guide 5 has a rod-shaped first system 17 and a first system 17 via a connecting portion 18a, 18b. It is connected to the inner upper part of the cylindrical spray head 10 by two stems 11, and a discharge port 23 is formed in the upper part of this spray head 10 so that the tip of the nozzle 24 faces the outside. The discharge port 23 can be opened and closed by a nozzle stopper 25.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be corrected] 0022

[Correction method] Change

[Correction content]

In the present embodiment, as shown in FIG. 2, in order to make the biasing force of the coil spring 13 sufficiently act on the sealing portion 9, the upper end of the spring receiving portion 28 and the undercut fitting portion 30 at the lower end of the spray head 10 are provided. In addition, a clearance 21 is provided. Further, between the second stem 11 and the engaging end 33 of the receiving portion 28, there is provided a retaining portion 35 having a stepped portion in contact with each other, and similarly, a clearance 34 is also generated in this portion. ..

[Brief description of drawings]

FIG. 1 is a partial sectional view showing the internal structure of a fluid discharge device of the present invention.

FIG. 2 is an enlarged sectional view of a piston portion.

FIG. 3 is a partial cross-sectional view showing the internal structure of a conventional fluid discharge device.

[Explanation of symbols]

 1 ・ ・ Cylinder 2 ・ ・ Cap 3 ・ ・ Valve shaft 5 ・ ・ Piston guide 7 ・ ・ First piston 8 ・ ・ Second piston 10 ・ ・ Spray head 13 ・ ・ Coil spring 14 ・ ・ Valve stopper

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Creator Takao Kishi 3-2-6 Oshima, Koto-ku, Tokyo Yoshino Industry Co., Ltd.

Claims (1)

[Scope of utility model registration request] 1. A valve (1), which is in communication with a spray head (10), is fitted into a cap (2) attached to the mouth of a fluid storage container, and is vertically movable in the cylinder (1). The valve shaft (3) is provided on the valve seat (4) to form a valve that is opened and closed by contacting and separating the valve shaft (3). A hollow piston guide (5) that moves up and down along is provided, a through hole (6) is bored in the piston guide (5), and the first piston (7) is integrated with the piston guide (5). On the other hand, in a fluid discharge device in which a second piston (8) formed on the other hand and interlocked with the first piston is watertightly and slidably inserted between the piston guide (5) and the inner peripheral surface of the cylinder (1). , The piston guide (5) on the spray head (10) The spring (13) for tying up and urging the spray head (10) upward is inserted between the spray head (10) and the cap (2) and abuts against the valve shaft (3). A fluid discharge device characterized in that a valve stopper (14) for restricting an operation range of (3) is provided in a passage of the valve shaft (3).