JPH0627575Y2 - Small pump head - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Industrial field of application" The present invention relates to a head of a small pump.

“Prior Art” A small pump is attached to a container body, and a liquid is provided so that liquid inside the container is discharged from a nozzle of the head by vertically moving an operating member via a head at the upper end of the stem standing upright from the pump. It is used. In this type of small pump, since the nozzle is still protruding, dust or the like is easily attached to the nozzle.

On the other hand, for example, a cap disclosed in Japanese Patent Publication No. 54-16276 is known as a cap for fitting a container body in which a nozzle is mounted so that it can freely move in and out. The cap is a plug-like member that is fitted to the inner surface of the neck of the container body, and a vertical cylinder part of an L-shaped cylinder provided in a receiving cylinder that hangs from the front part of the wall of the plug-like member. The nozzle member fitted rotatably and the laterally-directed tubular portion projecting from the upper end of the vertical tubular portion are positioned on the neck wall of the plug-like member on the outer surface of the neck of the container body, and the outer circumference of the neck wall. And a cover cap rotatably fitted to the lower part of the peripheral wall that hangs from the cover cap. The engagement shaft rising from the upper surface of the distal end of the laterally oriented cylindrical portion is driven by the cylindrical portion so that the distal end thereof can be moved in and out of the through hole. Is engaged in the long groove.

[Problems to be solved by the invention] If the cap with a nozzle is applied to the head of the small pump described above, the nozzle can be moved in and out, and thus dust and the like can be prevented from adhering to the nozzle.
The nozzle member of the cap with nozzle is L-shaped, and the through hole of the receiving cylinder bottom wall that connects the inside of the container and the nozzle hole by the rotation of the nozzle member around the vertical cylinder portion is the bottom wall of the vertical cylinder portion. Since it is installed so that it can be opened and closed by applying it to the nozzle of the head as it is, the vertical cylinder requires a considerable length in order to prevent shaft shake when rotating the nozzle, so the head is also equivalent. As a result, the head has a large size with respect to a small pump body, which impairs the appearance of the pump.

According to the present invention, a nozzle having only a horizontally-oriented tubular portion excluding the vertical tubular portion of the nozzle member is provided, and the base end portion of the nozzle can be horizontally swung. The outflow end of the liquid flow path, which is pivotally attached to the upper and lower plates of the U-shaped bearing and communicates with the stem hole on the inner surface of the standing plate of the bearing,
In addition, it is possible to make the head with a nozzle loading / unloading mechanism a size suitable for a small pump by opening the nozzle hole base end to the nozzle base end portion so that they communicate with each other when the nozzle tip end portion projects forward. It was done.

"Means for Solving the Problem" A disk-shaped head base 1 is attached to the upper end of a stem 6 standing upright from a pump body B, and a lower portion of a peripheral wall 21 of a cover cap 2 is rotatably fitted to the outer peripheral surface of the base. In the upper and lower plate portions of the U-shaped bearing 112 attached to the upper surface of the front portion of the base body 1,
The shafts 311 and 311 projecting from the top and bottom of the base end portion are pivotally attached, and the tip end portion is directed rearward so that the nozzle 3 with the base end face closed is housed in the cover cap 2.
The cover cap peripheral wall 21 is provided with engaging means for moving the cover cap and the cover cap peripheral wall 21 is provided with a window hole 22 through which the nozzle tip portion comes in and out. The base end of the nozzle 3 has a convex shape so that the surface contact can be always made watertight.
In addition, the inner surface of the upright plate portion of the bearing 112 is formed into a concave, corresponding arcuate surface, so that the nozzle is driven by approximately 180
The base 1 is made to communicate with the nozzle hole base end 33 on the convex arcuate surface and the stem 6 on the concave arcuate surface so as to be watertightly communicable in a state of rotating forward and projecting forward from the window hole. The outflow ends of the liquid flow paths 13 provided inside were opened.

[Operation] When the cover cap 2 is rotated in the forward direction with respect to the head base 1 from the state shown in FIG. 1, the tip of the nozzle 3 is formed in the peripheral wall 21 of the cover cap 2 as shown in FIG. The nozzle 3 is housed in the cover cap as shown in FIG. 1 by projecting outward from 22 and turning the cover cap 2 in the opposite direction.

[Example] A is a head of the present invention, B is a known pump body, and a stem 6 is erected from a cylindrical piston fitted in a cylinder 4 of the pump body, and the head A is fitted to the upper end of the stem. It is a thing. In addition, 7 is a liquid suction pipe that hangs from the lower end of the cylinder, and 5 is a mounting cylinder for mounting the pump main body on the neck of the container C, and a suction valve is provided in the lower portion 8 of the cylinder and a stem 6
Has a discharge valve 9 in the upper end thereof.

The head A is a disk-shaped head base body 1, a cover cap 2 in which a lower part of a peripheral wall 21 is rotatably fitted on an outer peripheral surface of an upper surface of the base body, and a head cap located at the inside of the cover cap. And the nozzle 3 attached to it.

The disc-shaped base body 1 is preferably formed by fitting two upper and lower members 11 and 12 as shown in the figure. The lower member 12 has a fitting cylinder 121 hung from the center of the lower surface of the lower member 12, and the fitting cylinder 121 is fitted to the outer surface of the upper end portion of the stem 6. The fitting cylinder has a male screw 122, and the fitting cylinder hole is extended upward to form a recess for forming the liquid flow path 13. The upper member 11 has a peripheral wall that hangs from the outer circumference of the lower wall that closes the upper surface of the lower member, and is fitted in a watertight manner to the outer peripheral surface of the lower member. Stand up the wall. U-shaped bearing from the front of the wall
The upper and lower plate parts 112 are erected in a state of protruding to the left or right. Further, a through hole serving as the liquid flow path 13 is opened in the lower surface of the section wall so as to communicate with the concave portion up to an intermediate portion in the vertical direction of the upright plate portion of the bearing. A hole is formed in the side surface of the standing plate portion on the side where it projects.

The nozzle 3 closes the nozzle base end surface, and projects shafts 311 and 311 pivotally attached to the upper and lower plates of the bearing 112 from above and below the base end portion. The outer surface of the base end portion of the nozzle and the side surface of the standing plate portion of the bearing 112 on the base end side are also formed when the nozzle tip 32 is directed rearward by swinging the nozzle 3 around the shafts 311 and 311. As shown in FIG. 4, the nozzle base end portion is formed in a convex arc shape, and the standing plate portion side surface is formed in a concave arc shape so that the surface contact is always watertight even when facing forward. Further, when the nozzle tip portion 32 is directed forward, the base end 33 of the nozzle hole is opened on the side surface of the nozzle base end portion so that it can communicate with the outflow end of the liquid flow path 13. The nozzle is provided such that its tip is located above the neck wall of the head base when the tip of the nozzle is directed rearward.

In the cover cap 2, a lower portion of the peripheral wall 21 that hangs from the outer periphery of the neck wall 25 is rotatably fitted to the upper outer surface of the head base 1. Engaging projections 23 are provided on the inner surface of the lower end of the peripheral wall, and the projections are fitted into the concave grooves 111 of the head base body. The cover cap hangs a nozzle pressing engaging piece 24 from the rear portion of the collar wall for moving the nozzle 3 by swinging about the shafts 311 and 311 as the cover cap rotates, and the tip portion of the nozzle 3 is fixed. A window hole 22 as a nozzle inlet / outlet hole is formed in the extended peripheral wall portion. As shown in FIGS. 3 and 4, a shielding plate 113 for closing the window hole 22 in the nozzle accommodated state may be erected from the rear portion of the head base wall.

As shown in FIG. 2, the liquid channel 13 has the base end 33 of the nozzle hole and the tube hole of the stem 6 when the tip of the nozzle is projected forward by the rotation of the cover cap 2 with respect to the head base 1. When the nozzle 3 is housed in the cover cap 2 by rotating the cover cap in the opposite direction and the nozzle 3 is housed in the cover cap 2, the base end portion of the nozzle and the other side surface of the nozzle 3 are connected to each other as shown in FIG. By sealing, the communication between the liquid flow path 13 and the base end 33 of the nozzle hole is blocked.

[Advantage of the Invention] The present invention has the above-mentioned configuration, and is a U-shaped bearing attached to the front upper surface of the disk-shaped head base 1 attached to the upper end of the stem 6.
Shafts 311 and 311 projecting from the top and bottom of the base end on both the upper and lower plates of 112.
The nozzle 3 is pivotally attached to the nozzle 3, and the nozzle hole base end 33 and the head base 1 are provided on one side surface of the base end portion of the nozzle and on the side surface of the standing plate portion of the bearing 112 on the base end side. Since the outflow end of the liquid flow path 13 is opened respectively, the head height is at least L-shaped as compared with the case where the L-shaped nozzle member as in the conventional example described above is used as the nozzle of the small pump head. The head can be thinned and downsized by lowering the length of the vertical cylindrical portion of the nozzle member. Further, since the shafts 311 and 311 projecting from the upper and lower sides of the nozzle base end portion are pivotally attached to the upper and lower plate portions of the U-shaped bearing 112 attached to the front upper surface of the head substrate 1, the nozzle tip portion presses the nozzle about the shaft. It is easy to oscillate horizontally, and the upper and lower plate portions of the bearing 112 sandwich the nozzle base end portion and prevent the vertical movement thereof. Therefore, the nozzle hole base end 33 and the liquid flow path 13 Of the liquid flow path 13 is completely blocked by the other side surface of the nozzle base end portion.

[Brief description of drawings]

FIG. 1 is a perspective view of a container having a small pump with a head according to the present invention, FIG. 2 is a perspective view of the container shown in FIG. 1 in a nozzle protruding state, and FIG. 3 is a side view of a small pump having a head as a section.
FIG. 4 is a cross sectional view of the head. 1 ... Head substrate, 2 ... Cover cap 3 ... Nozzle

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Bibliography Sho 59-93670 (JP, U) JP 45-17876 (JP, B1) JP 54-16276 (JP, B1)

Claims (1)

[Scope of utility model registration request] 1. A disc-shaped head base 1 is attached to an upper end of a stem 6 standing upright from a pump body B, and a lower portion of a peripheral wall 21 of a cover cap 2 is rotatably fitted to an outer peripheral surface of the base.
Nozzles for closing the base end face by pivoting shafts 311 and 311 projecting from the upper and lower ends of the base end to both upper and lower plate parts of a U-shaped bearing 112 attached to the upper surface of the front part of the base 1 and directing the front end to the rear. 3 is housed in the cover cap 2 and an engaging means for moving the nozzle 3 along the cover cap peripheral wall 21 about the shaft is provided in the cover cap, and a window hole 22 through which the nozzle tip portion comes in and out is also covered. The base end of the nozzle 3 is formed in a convex shape and the inner surface of the upright plate portion of the bearing 112 is formed in a concave shape so that surface contact can be made in a watertight manner even when the nozzle is horizontally swung by the driven member. ,
As a corresponding arcuate surface, the nozzle is rotated about 180 degrees by the above-mentioned driven and can be communicated in a watertight manner in a state of protruding forward from the window hole.
In addition, the head of the small pump is characterized in that the outflow end of the liquid flow path 13 provided in the base body 1 in communication with the stem 6 is opened on the concave arc surface.