JP5124149B2 - Trigger type liquid ejector - Google Patents

Description

  The present invention relates to a trigger type liquid ejector, and intends to effectively avoid bending deformation of a cylindrical body (injection cylinder) that forms a content liquid ejection path.

The trigger type liquid ejector has a pump mechanism that controls the suction, pressurization, and pumping of the liquid in the body where the injection nozzle is arranged. The piston is reciprocated in the cylinder by repeatedly pulling the operation lever. It has a mechanism for ejecting the content liquid in the container, and in recent years, it has been widely used for containers containing a household detergent, a hair removal agent, a hair styling agent, a fragrance, and the like (for example, Patent Document 1).
No.7-16051

  By the way, in this type of liquid ejector, a cylindrical body (a jet cylinder) that forms a jet path of the content liquid is cantilevered by the main body portion of the body, and a turning force is applied to the content liquid related to the jet at the tip portion. Usually, a spin element is attached, but the repulsive force (biasing force) of the elastic member that biases the piston toward the operating lever acts in the direction of pushing up the cylinder from the operating lever through the spin element. It has often been found that the cylindrical body is bent and deformed.

  In this case, the operating position of the operating lever is shifted upward, and the front end of the piston is lifted up. When the operating lever is pulled, it must operate with the same axis as the cylinder axis. The piston is not pushed into the cylinder at an angle and the reciprocating motion of the piston is obstructed, making it impossible to maintain the desired ejection form. There was also concern about causing liquid leakage.

  An object of the present invention is to provide a novel trigger-type liquid ejector that can reliably prevent bending deformation (distortion) of a cylindrical body due to the repulsive force of an elastic member that supports an operation lever, and can achieve stable ejection of content liquid. Proposed.

The present invention includes an injection nozzle connected to a spin element, a body that houses a pump, and an operation that is supported by the spin element through a pivot shaft so that the pump can be driven by a pulling operation to eject liquid. A trigger-type liquid ejector comprising a lever, wherein the body communicates with a laterally cylindrical body that inserts and connects a spin element and forms an ejection path for the content liquid therein, and an ejection path of the cylindrical body Has a longitudinal passage,
In the main body portion of the body, extending along the cylindrical body to induce insertion connection of the spin element, and in the connection posture, both a part of the upper surface wall of the spin element and a part of the side wall connected to the upper surface wall to a contact with the trigger mode liquid sprayer, characterized in that a frame with a pair of angle for restricting the movement of said spin element.

  Since the main body portion is provided with a frame extending along the axis of the cylindrical body and is brought into contact with at least the upper surface wall of the spin element to restrict its movement, the cylindrical body does not bend and deform. Further, since the force that lifts the operation lever and the piston front end does not act, the piston is not pushed in the cylinder in an oblique state.

Hereinafter, the present invention will be specifically described with reference to the drawings.
FIG. 1 is a cross-sectional view showing an embodiment of a trigger type liquid ejector according to the present invention, and FIGS. 2 (a) to 2 (e) show the plane, front, side, back and bottom of the body. FIGS. 3A to 3E are views showing a plane, a front surface, a side surface, a back surface, and a bottom surface of the spin element.

  In the figure, 1 is an injection nozzle. The nozzle 1 includes a nozzle body 1a, a nozzle cover 1b, and a spin element 1c that is connected to the rear end of the nozzle body 1a and applies a swirling force to the content liquid related to the ejection. A stopper member 1d that rotates in synchronization with the rotation of the nozzle body 1a is disposed on the rear outer peripheral wall of the nozzle body 1a. A convex portion (not shown) is provided on the rear surface of the cylinder (described later) and the front end surface of the pump cylinder (described later) to prevent the operation lever from swinging.

2 is a body with a pump. The body 2 is inserted and connected at the rear end of the spin element 1c, and a horizontal cylinder (injection cylinder) 2a that forms the ejection path R of the content liquid on the inside thereof, and a main body portion 2b integrally including the cylinder 2a consists passage R ₁ portrait leading to ejection path R of the cylindrical body 2a is formed in the body portion 2b.

Reference numeral 3 denotes an intake combined with the main body portion 2b. The Intake 3 consists compatible base 3b and the cylindrical body 3a to be fitted in the passage R ₁ of the main body portion 2b, at the lower end of the body portion 2b becomes integral with the cylindrical body 3a.

4 is a cover that covers the body 2 together with the injection nozzle 1, and 5 is a cap that can screw the liquid ejector at the mouth of the container. The cap 5 has an opening 5a on the top surface, and the lower end of the body portion 2b of the body 2 is inserted into the opening 3a together with the intake 3, and a flange 3b ₁ provided integrally with the base 3b of the intake 3 is provided. Through the mouth of the container.

  Reference numeral 6 denotes an operation lever. The operation lever 6 is supported on the spin element 1c so as to be swingable via a pivot shaft 7 (notches C are provided on both side walls of the spin element 1c (see FIG. 3 (c)), and the pivot shaft 7 is provided from the inside thereof. The pump is driven by swinging the pivot shaft 7 around a fulcrum, and the liquid in the container is ejected through the ejection nozzle 1.

8 is a pump. The pump 8 is slidably elastically supported via the cylinder 8a having a passage t leading to passageway R ₁ of the body portion 2b of the body 2, the coil spring in this cylinder 8a, cooperating with the projection 6a of the operating lever 6 It consists of a piston 8b with a head.

  A frame 9 is a cantilever support type integrally provided on the main body portion 2b of the body 2. As shown in FIG. 4, the frame 9 is provided with angles 9a and 9b having inverted L-shaped cross sections arranged in parallel at intervals on both sides of the cylindrical body 2a.

  Reference numeral 10 denotes an elastically displaceable tongue piece (see FIGS. 2 and 4) integrally provided between the angles 9a and 9b of the frame 9. An opening 10a is formed in the tongue piece 10 and fits with the protrusion 1c 'of the spin element 1c so that the spin element 1c is prevented from coming off at the tip of the cylindrical body 2a.

Further, 11 is disposed in the passageway R ₁ of the main body portion 2b, a check valve which opens upon suction of the liquid content, 12 are also disposed in the passageway R ₁ of the main body portion 2b, the pressure of the liquid content, at the time of compression Only the valve body that is opened, 13 is fitted and held in the opening of the intake 3 and sucks the content liquid in the container, and 14 is opened by the pulling operation of the operation lever 6, and at that time, outside air is introduced into the container The outside air is introduced through a gap (not shown) provided between the outside air introduction path (the negative pressure releasing hole formed in the outer wall of the cylinder 8a, and the outer wall of the cylinder 8a and the peripheral wall of the main body portion 2b fitted therein. To be introduced).

The spin element 1c can be connected to each other by inserting the opening of the tube 1c ₁ (see FIGS. 3 and 4) into the tip of the cylindrical body 2a. A part of the upper surface wall and a part (corner part) of the side wall connected thereto abut against the inner wall surfaces of the angles 9a and 9b, and are connected while maintaining the abutting state.

  Even when the protrusion 1c ′ of the spin element 1c is fitted into the opening 10a of the stopper 10 (see FIG. 1), the angles 9a and 9b remain in contact with the corners of the spin element 1c. For example, even if a force for displacing the spin element 1c is applied, the angles 9a and 9b receive the force, so the spin element 1c does not move, and therefore the cylinder 2a connected to the angle 9a is bent. Does not cause deformation. Lifting at the front end portions of the operation lever 6 and the piston 8b is also avoided, so there is no problem that the piston 8b is pushed obliquely.

  The frame 9 is shown as an example having an angle 9a, 9b having an inverted L-shaped cross section that regulates the upward movement of the spin element 1c, but the peripheral wall having a rectangular or circular cross section surrounding the cylindrical body 2a The spin element 1c may be inserted inside the peripheral wall.In this case, not only the upward movement of the spin element 1c but also the downward movement or the lateral movement can be restricted. Become.

  It is possible to provide a trigger type liquid ejector capable of effectively avoiding the oblique pushing of the piston resulting from the bending deformation as well as the bending deformation of the cylinder (injection cylinder) due to the repulsive force of the elastic member.

It is the figure which showed embodiment of the trigger type liquid ejector according to this invention in the cross section. (A)-(e) is the figure which each showed the plane of the body of the trigger type liquid ejector shown in FIG. 1, the front, the side, the back, and the bottom. (A)-(e) is the figure which each showed the plane of the spin element of the trigger type liquid ejector shown in FIG. 1, the front, the side, the back, and the bottom. It is an external appearance perspective view of a body and a spin element.

Explanation of symbols

1 Injection nozzle
1a Nozzle body
1b Nozzle cover
1c Spin element
1d Stopper member
2 body
2a cylinder
2b Body part
3 Intake
3a cylinder
3b base
3b ₁ flange
4 Cover
4 'convex
5 cap
5a opening
6 Control lever
6a protrusion
7 pivot axis
8 Pump mechanism
8a cylinder
8b piston
9 frames
9a angle
9b angle
10 Tongue
10a opening
11 Check valve
12 Disc
13 Suction tube
14 Outside air introduction path
R ejection route
R ₁ passage
S passage
C Notch

Claims (1)

An injection nozzle connected to the spin element, a body that houses the pump, and an operation lever that is swingably supported by the spin element via a pivot shaft and that drives the pump by its pulling operation and ejects the content liquid through the injection nozzle The body includes a lateral cylinder that inserts and connects a spin element and forms an ejection path inside the body, and a vertical passage that communicates with the ejection path of the cylinder. Have
A main body portion of the body extending along a cylindrical body to induce insertion connection of the spin element; and in the connection posture, a part of a top wall of the spin element and a part of a side wall connected to the top wall A trigger type liquid ejector comprising a frame having a pair of angles that abut against both and regulate the movement of the spin element.

Images