JPH0535714U - Container with pump - Google Patents

Abstract

(57) [Summary] [Purpose] A container with a pump that has a small number of parts, is inexpensive, and has a simple structure. A cap body 6 having a movable body 2 in which an operating body 1 is fitted, and a metering chamber 7 integrally formed inside
And a piston 5 that slides up and down in the fixed amount chamber 7. The piston 5 has an upper wall 5a that opens and closes the upper inflow hole 3a of the upper chamber 3, and a lower wall that opens and closes the lower inflow hole 4a of the lower chamber 4. 5b and. By the movable body 2 and the piston 5 moving up and down slidably, the upper wall 5a and the lower wall 5b of the piston 5 open either one of the upper inflow hole 3a or the lower inflow hole 4a, and the other To close.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a container with a pump, and more particularly to a pump container in which a pump unit is attached to the mouth of a plastic bottle or a tube container.

[0002]

[Prior Art]

 Conventionally, various types of containers have been provided in which a spray pump or an extrusion pump is inserted from the mouth of the container and fixed at the mouth. An example of such a pump-equipped container is shown in FIG. In the figure, reference numeral 50 denotes a container body, and a pump unit 53 is assembled to the nipple 52 by insert molding, and the nipple 52 is welded to the body portion upper end 51 of the container body 50 from the inside.

The pump unit 53 is fitted in the cup body 55, and is composed of an operating body 54, a metering chamber 56, a piston 57, a movable body 58 and a spring body 59. The order of moving the contents is that the contents first flow into the metering chamber 56 from the valve body 56a provided at the lower end of the metering chamber 56, and then from the metering chamber 56 through the hole 58a of the movable body 58. It is moved into the movable body 58. Then, it is ejected to the outside from the nozzle 54a of the operating body 54.

[0004]

[Problems to be solved by the device]

 However, such a pump unit 53 has not only a large number of constituent parts but also a valve body 56a and a valve retainer 56b for isolating the container main body 50 and the constant amount chamber 56, and a hole 58a of the movable body 58 and a structural part. However, the structure for sucking the content in the container body 50 and discharging it to the outside is very complicated.

The present invention has been made in view of such conventional problems, and provides a container with a pump having a small number of parts and a low manufacturing cost, and omits the valve body 56a and the valve retainer 56b. It is an object of the present invention to provide a pump-equipped container which has a simple structure and which can suck and discharge the contents only by the sliding action of the piston 57.

[0006]

[Means for Solving the Problems]

 In order to solve this problem, the present invention is composed of a movable body in which an operating body is fitted upward, a cap body having a fixed amount chamber inside by integral molding, and a piston that slides up and down in the fixed amount chamber. The movable body is composed of an upper chamber having an upper inflow hole formed therein, a lower chamber having a piston body formed on the outer periphery and a spring body, and having a lower inflow hole formed therein. The body consists of a female screw cap that is screwed into the mouth of the container body, and a metering chamber that holds the movable body and the piston. It is characterized by comprising a lower wall that opens and closes the hole and engages and disengages with the piston locking portion.

[0007]

[Action]

 The operation of the present invention having the above structure will be described. As shown in FIGS. 1 to 4, first, the pump unit is firmly fixed to the mouth of the container body by screwing the cap body into the mouth of the container body. Then, in the case of ejecting the contents, as shown in FIG. 3, the operating body is pressed with a finger to lower the movable body. Then, the upper inlet hole, which was closed by the upper wall of the piston, is opened. On the other hand, the lower inlet hole formed in the lower chamber is closed by the lower wall of the piston. At this time, the contents stored in the metering chamber are ejected to the outside from the nozzle through the upper inflow hole, the upper chamber.

Next, when the pressing of the operating body is released as shown in FIG. 4, the elastic body of the spring body raises the movable body. That is, the piston engages with the piston locking portion of the lower chamber and integrally moves up in the metering chamber. At this time, the upper inlet of the upper chamber is closed by the upper wall of the piston, and the lower inlet is open. Then, the content stored in the container body is sucked into the decompressed quantitative chamber through the lower inflow hole of the lower chamber. By repeating this action, the contents are ejected from the container body to the outside.

[0009]

【Example】

 Next, the invention will be described with reference to the drawings. In FIG. 1, reference numeral 1 denotes an operating body, and the operating body 1 is fitted on the upper end of a movable body 2. The movable body 2 is composed of an upper chamber 3 and a lower chamber 4, and both chambers are completely partitioned. The upper chamber 3 is provided with an upper inflow hole 3a, and the lower chamber 4 is provided with a lower inflow hole 4a. The upper wall 5a or the lower wall 5b of either of the upper wall 5a and the lower wall 5b opens either the upper inflow hole 5a or the lower inflow hole 5b and closes the other.

The female screw cap 6 a of the cap body 6 is screwed into the mouth 8 a of the container body 8. As a result, the pump unit is firmly fixed to the mouth 8a. The cap body 6 is composed of a female screw cap 6a and a fixed amount chamber 7 formed integrally with the female screw cap 6a inside thereof. The type of container body into which the pump unit is screwed may be a synthetic resin bottle type container body 8 as shown in FIG. 1 or a tube container type container body 9 as shown in FIG. An air hole 7a is formed in the cap body 6 screwed to the synthetic resin bottle type container body 8 so that the air pressure inside and outside the container body 8 can be adjusted.

A piston is slidably accommodated inside the metering chamber 7, and an inner wall 5 a and an outer wall 5 b of the piston 5 slidably contact the upper chamber 3 and the lower chamber 4 of the movable body 2. , The upper inflow hole 3a and the lower inflow hole 4a are opened and closed. When the movable body 2 is pressed by the operating body 1, the lower wall 5b of the piston 5 engages with the upper chamber 3 of the movable body 2 and integrally moves down in the fixed amount chamber 7. Next, when the movable body 2 rises due to the elastic force of the spring body 4c, the piston locking portion 4b of the lower chamber 4 rises together with the lower wall 5b of the piston 5.

As described above, the pump-equipped container according to the present invention has an effect that the number of parts is small and the manufacturing cost is low, and, like the conventional pump-equipped container, the plate valve and the valve retainer are provided. Since it is omitted, the structure is simple, and since the contents are sucked in and discharged only by the sliding action of the piston and the opening and closing of the inflow hole, these actions can be performed integrally and a reliable pump function is possible. Becomes

[Brief description of drawings]

FIG. 1 is a sectional view showing a first embodiment of a container with a pump according to the present invention.

FIG. 2 is a sectional view showing a second embodiment of the pump-equipped container according to the present invention.

FIG. 3 is a sectional view showing the operation of the container with a pump according to the present invention.

FIG. 4 is a sectional view showing the operation of the container with a pump according to the present invention.

FIG. 5 is a cross-sectional view showing a conventional pump-equipped container.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Operation body 2 Movable body 3 Upper chamber 3a Upper inflow hole 4 Lower chamber 4a Lower inflow hole 4b Piston locking part 4c Spring body 5 Piston 5a Upper wall 5b Lower wall 6 Cap body 6a Female screw cap 7 Fixed volume chamber 8 Container body 8a Mouth

Claims (1)

[Scope of utility model registration request] 1. A movable body having an operation body fitted upward, a cap main body having a fixed quantity chamber inside by integral molding, and a piston sliding up and down in the constant quantity chamber, wherein the movable body is an upper part. The cap body includes an upper chamber having an inflow hole and a lower chamber having a piston body formed on the outer periphery and having a spring body and having a lower inflow hole. It consists of a female screw cap that is screwed into the mouth, and a metering chamber that holds the movable body and the piston.The piston opens and closes the upper inlet hole of the upper chamber and the lower inlet hole of the lower chamber. A container with a pump, which further comprises a lower wall that engages with the piston locking portion in a disengageable manner.