JP2010071160A - Manual liquid injector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a manual liquid injector manually, easily and finely adjusting the amount of liquid sucked or injected such as UV curable resin liquid, and easily performing suction and injection. <P>SOLUTION: This manual liquid injector includes: a flexible short tube 2 having a liquid sucking/injecting needle 1 at its front end and communicatingly connected to the needle 1; a receiving surface 11 receiving the tube 2; a rotor 20 push-pressing the tube 2 to the receiving surface 11 and also applied with rotational force by a human finger; a small gear 21 integrally projecting from both the end surfaces of the rotor 20; a pair of guide grooves 12 for push-pressing and guiding the rotor 20 to the tube 2 in order not to release the rotor; a shaft 22 connected integrally with the rotor 20 and small gear 21 and also guided in a longitudinal direction by the guide groove 12; and a rack member 13 meshed with the small gear 21 and reciprocating the small gear 21 and rotor 20 backward and forward, and linearly. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a manual liquid ejection tool.

It was thought that it would be difficult to easily repair a scratch when an automobile windshield was damaged by flying pebbles, but recently, a transparent UV curable resin liquid was applied to the scratch. A method of applying and irradiating an ultraviolet light to cure and repairing has been proposed.
However, conventionally, it has been difficult to apply a small amount of a UV curable resin liquid to a scratch on a windshield at a gas station or the like. The reason will be described below.
2. Description of the Related Art Conventionally, as a liquid discharge tool used for inhaling and discharging a small amount of liquid, for example, as described in Patent Document 1, a device that manually inhales and discharges a liquid using a syringe using air pressure is known. In addition, as described in Patent Document 2, a squeeze pump using a squeeze pump is known in which a rotor is rotated by an electric motor and discharged.
Registered Utility Model No. 3142547 JP-B-5-83309

A conventional liquid ejector using a syringe has a structure in which a piston is manually pushed and pulled, and when UV curable resin liquid is inhaled more than necessary and the UV curable resin liquid remains in the syringe, There was a problem that the UV curable resin liquid in the syringe was cured, and the syringe could not be used and wasted. In addition, the operation of performing a small amount of discharge with one hand required skill.
In addition, if the pressure adjustment is performed with an electric motor using a squeeze pump, the apparatus becomes relatively large in volume and expensive, and it is difficult to always provide each gas station.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a manual liquid ejector that can easily and finely adjust the amount of suction and discharge of a liquid such as a UV curable resin liquid manually (one hand) and can perform suction and discharge easily.

  In order to achieve the above object, a manual liquid ejection tool according to the present invention has a flexible short tube having a liquid suction / discharge needle at its front end and connected in communication with the needle, and receives the tube. A receiving surface, a rotating body that presses the tube against the receiving surface and is applied with a rotational force by a human finger, a small gear that is integrally projected from both end surfaces of the rotating body, and the rotating body escapes. A pair of guide grooves for pressing and guiding the tube, a shaft that is integrally connected to the rotating body and the small gear and guided in the front-rear direction by the guide groove, and meshes with the small gear. And a rack member that reciprocally moves the small gear and the rotating body back and forth.

Further, the body has the receiving surface and the guide groove integrally, and the body has a grip portion extending rearward.
Further, the body has the receiving surface and the guide groove integrally, and the outer surface of the body uses the grip portion in combination.

The tube has a length dimension of 20 mm to 100 mm and a rear end opened to the atmosphere.
Moreover, the said rotary body has many protrusions parallel to an axial center on the outer peripheral surface.

According to the manual liquid ejection tool of the present invention, by operating the rotating body with a finger while holding the ejection tool in one hand, the rotating body linearly reciprocates back and forth to inhale a minute amount into the needle or tube. On the contrary, a minute amount can be discharged.
In addition, since the rotary body is moved back and forth manually (one hand) along the tube to perform pressure feeding, the overall structure is simple and compact, and an inexpensive liquid suction / discharge tool can be obtained.

Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments.
FIG. 1 is a plan view showing an embodiment of the present invention, and FIG. 2 is a sectional side view thereof.
The manual liquid ejection tool of the present invention includes a body 10 having a grip 14 on the rear side, a connecting member 4 that is detachably screwed to the front side of the body 10, and a body 10 that is detachable via the connecting member 4. A liquid suction / discharge needle 1 connected to the flexible tube, a flexible short tube 2 connected in a communicating manner via the needle 1 and a connecting member 4, and a rotating body 20 to which a rotational force is applied by a human finger ( 5).

The body 10 is provided with a vacant portion 30 having an upper opening, a receiving surface 11 recessed in a bottom wall surface portion inside thereof, and a pair of left and right for pressure guide so that the rotating body 20 does not escape vertically and horizontally. The guide groove 12 and a pair of left and right rack members 13 that mesh with the small gear 21 that is integrally and concentrically connected to the rotating body 20 to reciprocate linearly back and forth. The guide grooves 12 and 12 are recessed in the inner surfaces of the left and right side walls of the empty space 30 of the body 10.
Further, in the body 10, a front downward inclined hole portion 31 is provided through a corner portion of the front lower portion of the vacant space portion 30, and a female screw portion to which the connecting member 4 is screwed is provided in this hole portion. ing. The upper wall portion 15 of the body 10 is formed with a window portion 15a in which the empty chamber portion 30 opens upward. In addition, a bottomed bottom surface of the grip portion 14 is provided with a downwardly opened shape, and a continuous recessed portion 14 a is provided in the lower rear portion of the empty space portion 30.

The connecting member 4 has a communicating passage therethrough. The base end 4b of the connecting member 4 is formed with an insertion portion 4e into which the front end of the tube 2 is fitted. There is a male thread portion 4d that is screwed to the body 10 near the base end 4b of the connecting member 4, a center portion has an outer flange portion 4f, and a base end 1b of the needle 1 is press-fitted into the distal end 4a. The insertion part 4c is provided.
The needle 1 has a through-hole through which a liquid flows, and the base end 1b is provided with a press-fitting portion that press-fits the insertion portion 4c of the connecting member 4.
The tube 2 has a length L in a straight line state of 20 mm to 100 mm, and is attached to the receiving surface 11 in a straight line. Further, the rear end portion 3 of the tube 2 is accommodated in correspondence with a recessed portion 14a provided in the grip portion 14, and is open to the atmosphere.

FIG. 3 is a cross-sectional front view of the manual liquid ejection tool according to the present invention. FIG. 4 is a perspective view showing an example of the rotating body 20 used in the manual liquid ejection tool according to the present invention.
The rotator 20 includes a small gear 21 that protrudes symmetrically from both ends of the rotator 20, and a shaft 22 that protrudes symmetrically from both ends of the small gear 21. The rotating body 20, the small gear 21, and the shaft 22 are integrally connected concentrically, and the shaft 22 is inserted into the guide groove 12 so as to be rotatable and movable back and forth. The rotating body 20 has a large number of protrusions 23 parallel to the axis on the outer peripheral surface thereof. As shown in FIGS. 3 and 2, the small gear 21 and the rack member 13 are engaged with each other, and the rotational motion of the small gear 21 (rotating body 20) is converted into a linear reciprocating motion in the front-rear direction.

Next, a method (action) of using the above-described manual liquid ejection tool of the present invention will be described.
FIG. 5 shows an example of use of the manual liquid ejection tool according to the present invention. First, the body 10 is held in the hand and the rotating body 20 is operated with a finger.

The rotating body 20 presses a part of the tube 2 as shown in FIG. 2, and the inner wall of the tube 2 is in close contact with the pressing portion 40 without any gap. By rotating the rotating body 20 from the front to the rear, the pressing portion 40 of the tube 2 is linearly moved from the front to the rear, and negative pressure is generated in the tube 2.
Further, the ridge 23 prevents the rotating body 20 from receiving a frictional resistance from the guide groove 22 and the tube pressing portion 40 and slipping a finger pressing the outer peripheral surface of the rotating body.

The small gear 21 meshes with the concavo-convex teeth of the rack member 13, and the rotating body 20 surely moves back and forth linearly.
The guide groove 12 pushes back against the elastic force of the tube 2 and presses and guides the rotating body 20 that linearly moves back and forth while rotating.

  Next, the tip 1a of the needle 1 is placed in a liquid such as a transparent UV curable resin liquid or an adhesive liquid, and the rotating body 20 is rotated from the front to the rear with a finger. Liquid is sucked into the needle 1 or the tube 2 from the tip 1 a of the needle 1 using the negative pressure generated in the tube 2.

  Next, the tip 1a of the needle 1 is separated from the liquid and is brought close to a target portion (for example, a windshield of a car) to be discharged. When the rotating body 20 is rotated from the rear to the front with a finger, the tube 2 is squeezed by the rotating body 20. The liquid in the tube 2 is pumped in the discharge direction. The liquid is squeezed out from the tube 2 to the needle 1 and discharged from the tip 1 a of the needle 1. By making the needle 1 and the connecting member 4 detachable, the used needle 1 and the connecting member 4 can be exchanged, and when the liquid is solidified and clogged in the needle, the needle 1 can be easily used. Can be used for a long time.

In addition, the design of the manual liquid ejection tool of the present invention can be changed. For example, as shown in FIG. 6, the grip portion 14 may have a shape in which the outer surface of the body 10 is used together.
In the present invention, “liquid” refers to a liquid in which ultrafine particles such as magnetic powder are mixed in addition to a normal liquid such as a UV curable resin liquid, an adhesive, a chemical liquid, or an oil, or Also includes viscous liquids such as grease.

As described above, the present invention includes the flexible short tube 2 having the liquid suction / discharge needle 1 at the front end and connected in communication with the needle 1, the receiving surface 11 for receiving the tube 2, and the tube 2. The rotating body 20 that is pressed against the receiving surface 11 and is given a rotational force by a human finger, the small gear 21 that is integrally projected from both end surfaces of the rotating body 20, and the tube so that the rotating body 20 does not escape A pair of guide grooves 12 for pressing and guiding to 2, a shaft 22 that is integrally connected to the rotating body 20 and the small gear 21 and guided in the front-rear direction by the guide groove 12, and meshed with the small gear 21 to be small The rack member 13 that linearly reciprocates the gear 21 and the rotating body 20 is provided, so that the power source and the control unit are omitted, and the overall structure is simple, compact, and inexpensive. A tool is obtained.
In addition, the amount of suction and discharge of liquid can be easily finely adjusted manually (one hand), and suction and discharge can be performed easily. Therefore, if it is installed at each gas station for repairing the scratches on the windshield as described above, the repair work can be carried out with relatively little skill.

Further, since the body 10 has the receiving surface 11 and the guide groove 12 integrally, and the body 10 has the grip portion 14 extending rearward, the liquid ejection tool according to the present invention can be easily operated with one hand.
In addition, since the body 10 has the receiving surface 11 and the guide groove 12 integrally, and the outer surface of the body 10 uses the grip portion 14 together, it can be made compact and the liquid according to the present invention can be achieved with one hand. The discharge tool can be easily operated.

Further, the tube 2 has a length L of 20 mm to 100 mm and the rear end 3 of the tube is open to the atmosphere, so that pressure not used for suction and discharge can be released.
Further, since the rotating body 20 has a large number of protrusions 23 parallel to the axis on the outer peripheral surface thereof, it can be reliably operated without human fingers slipping.

It is a top view which shows one Embodiment of this invention. It is a cross-sectional side view of a manual liquid ejection tool. It is a cross-sectional front view of a manual liquid ejection tool. It is a perspective view of the rotary body used for a manual liquid discharge tool. It is explanatory drawing which shows a usage example. It is a use condition explanatory view showing other embodiments.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Needle 2 Tube 3 Tube non-needle side edge part 4 Connecting member
10 body
11 Reception surface
12 Guide groove
13 Rack member
14 Grip
20 Rotating body
21 small gear
22 axes
23 ridges

Claims (5)

  A flexible short tube (2) having a liquid suction / discharge needle (1) at its front end and connected in communication with the needle (1), and a receiving surface (11) for receiving the tube (2) The rotating body (20) that presses the tube (2) against the receiving surface (11) and is given a rotational force by a human finger, and is integrally projected from both end faces of the rotating body (20). A small gear (21), a pair of guide grooves (12) for pressing and guiding the tube (2) so that the rotating body (20) does not escape, the rotating body (20), and the small gear (21 ) And a shaft (22) guided in the front-rear direction by the guide groove (12), and meshed with the small gear (21), the small gear (21) and the rotating body (20) And a rack member (13) that reciprocates linearly back and forth.   The manual body according to claim 1, wherein the body (10) has the receiving surface (11) and the guide groove (12) integrally, and the body (10) has a grip portion (14) extending rearward. Liquid ejection tool.   The body (10) has the receiving surface (11) and the guide groove (12) integrally, and the outer surface of the body (10) uses the grip portion (14) together. Manual liquid dispenser. The manual liquid ejection tool according to claim 1, wherein the tube (2) has a length (L) of 20 mm to 100 mm, and the tube rear end (3) is open to the atmosphere.   The manual liquid ejecting tool according to claim 1, 2, 3, or 4, wherein the rotating body (20) has a plurality of protrusions (23) parallel to the axial center on an outer peripheral surface thereof.

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