US20090084818A1

US20090084818A1 - Safety interlink assembly of liquid agent ejection device

Info

Publication number: US20090084818A1
Application number: US11/863,287
Authority: US
Inventors: Charles Chung; Wen-Lin Hu
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-09-28
Filing date: 2007-09-28
Publication date: 2009-04-02

Abstract

A safety interlink assembly of a liquid agent ejection device has a receiving chamber and a seat. An elastic body with a liquid agent is installed in the receiving chamber. The seat has an impact unit limited by a safety interlink assembly with two stage movements. The safety interlink assembly has a safety key installed on the top of the receiving chamber, a slidable rod limited by the safety key and a linking rod connected to the safety interlink assembly, and a bolt. The bolt buckles the impact unit and changes a position thereof by which the slidable rod moves backwards to drive the linking rod. The stress of the spring at the back end of the impact unit pushes forwards to impact the elastic body so that the liquid agent of the elastic body is sprayed out strongly from the receiving chamber.

Description

FIELD OF THE INVENTION

The present invention relates to safety interlink assemblies, in particular a safety interlink assembly applied in a liquid agent ejection device.

DESCRIPTION OF THE PRIOR ART

A personal sprayed gun of a prior art in the current market has the same design as a pesticide sprayed device. After a spraying head of the personal sprayed gun is pushed down, the liquid agent thereof is sprayed out because of extruding force so as to threaten violators and assure of personal safety. However, the personal sprayed gun of the prior art has several defects, such as a short gunshot suitable only for a shorter distance protection, and an uncontrollable spayed direction thereof caused by wind. Furthermore, the liquid of the prior art may be sprayed on a user when a violator is close to the user and the sprayed gun is operated. Therefore, the protecting function of the sprayed gun is not well qualified.
Another personal anti-violating device is a percussion style. The personal anti-violating device has basically a receiving chamber and a seat. The receiving chamber has an elastic body with a liquid agent. The seat has an impact unit. A user is capable of pushing down an ejection key for moving an interior axial and linking rod so that the impact unit of the seat pushes forwards to impact the elastic body in the receiving chamber. The liquid agent of the elastic body is extruded out and sprayed outwards so as to reach an anti-violating goal. Comparing to the personal sprayed gun, the personal anti-violating device is capable of overcoming these defects, including shorter gunshot distance and an uncontrollable spayed direction thereof caused by wind.
However, an operation of the personal anti-violating device is needed only to push an ejection key for driving thereof and then the impact unit is capable of impact an elastic body for ejecting the liquid agent. Therefore, the operation is easy to be driven by pushing an ejecting key down by mistake or incaution. In the situation, the personal anti-violating device may not protect a user in an emergency moment and furthermore endanger the user whiling the user taking along thereof. Besides, the personal anti-violating device has several defects, such as a complex design, a higher cost and unpopularity in the current market thereof.

SUMMARY OF THE INVENTION

The primary object of the present invention is to provide a safety interlink assembly of a liquid agent ejection device. The liquid agent ejection device is popularly also called to be a personal riot device. The movement of the safety interlink assembly is separated by different stages continuously. The safety interlink assembly with different stages is operated only by one single finger and has an advantage of well-function.
The secondary object of the present invention is to provide the safety interlink assembly for preventing from wrong operation. The safety interlink assembly is safer, because the action with different stages of the safety interlink assembly makes sure that the elastic body will not be struck whiling a user pushing a safety key down by mistake.
The third object of the present invention is to improve the front end structure of a receiving chamber of the liquid agent ejection device so as to prevent from the liquid agent permeating backwards or dropping outwards thereof.
Comparing to main functions of prior arts, the present invention is improved in many ways. For instance, comparing to a spray gun of a prior art, the present invention has multi-protection functions. The sprayed liquid of the present invention is not easy to be dispersed by blowing wind so that the present invention is capable of threatening a violator at a windy emergency moment. For another example, comparing to a personal protecting device of a prior art, the present invention has a higher reliability and safety. Besides, the present invention is operated only by single one finger with several advantages, such as a simple structure, a convenient operation and a lower manufacture cost.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an outer view of the liquid agent ejection device of the present invention.

FIG. 2 is a partial cross-sectional view for showing the safety interlink assembly and the interior structure of the present invention.

FIG. 3 is an outer lateral view of a preparing state of the present invention.

FIG. 4 is a partial cross-sectional view for showing a preparing state of safety interlink assembly.

FIG. 5 is an outer lateral view of an operating state of the present invention.

FIG. 6 is a partial cross-sectional for showing an operating state of the safety interlink assembly.

FIG. 7 is illustrated with a combination which one liquid agent ejection device is connected to another liquid agent ejection device.

FIG. 8 is a cross-sectional view of FIG. 7.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

In order that those skilled in the art can further understand the present invention, a description will be provided in the following in details. However, these descriptions and the appended drawings are only used to cause those skilled in the art to understand the objects, features, and characteristics of the present invention, but not to be used to confine the scope and spirit of the present invention defined in the appended claims.
Referring to FIGS. 1 and 2, a liquid agent ejection device 1 of the present invention has two major devices, including a receiving chamber 10 and a seat 20. An operating device of a safety interlink assembly 30 is on the exterior part of the receiving chamber 10. The operating device has a safety key 32 and a slidable rod 34 for limiting by the safety key 32. The interior part of the seat 20 has an impact unit 22 to form an actuating unit. A main action is that when the stress of the spring 24 is applied to the impact unit 22, it will move forwards to generate a strong impact. Besides, the receiving chamber 10 is installed in an elastic body 40. The back end of the elastic body 40 forms as an inflation chamber 42. The inflation chamber 42 is filled with medicine material. The front end of the elastic body 40 is filled with liquid. The impact unit 22 of the seat 20 is pushed forwards by the stress of the spring 24 to form a fast strong impact. The impact causes the medicine material to function in the back inflation chamber 42 of the elastic body 40 so that the chemical function will bring a strong force to extrude the liquid agent. A strong internal pressure thereof breaks through the front end of the elastic body 40 so that the liquid agent is sprayed out strongly from an ejection opening 16.
The present invention has a check assembly. The check assembly includes a pad 12 at a reserved position of the receiving chamber 10 and a receiving groove 14. The pad 12 of the elastic unit is combined with the elastic body 40 and instated at the front end of the elastic body 40. The reserved position is also at the steeped surface of the interior between the elastic body 40 and the receiving chamber 10. The reserved position of the pad 12 could be also installed circularly at the wall edge of the stepped surface corresponding to the interior shape of the receiving chamber 10. Thereby, the pad 12 is capable of isolating an interval between the elastic body 40 and the receiving chamber 10 to the ejection opening 16. When the impact unit 22 is impacted, the liquid agent is sprayed out strongly. The pad 12 is capable of preventing the liquid agent from returning along the stepped surface of he ejection opening 16 of the liquid agent ejection device 1 through an interior of the receiving chamber 10 of the elastic body 40. In addition, the receiving groove 14 is capable of preventing from the liquid agent dropping out.
Each lateral side of the present invention has a rib 182 and a combination groove 184 so that the two liquid agent ejection devices are capable of connection together, the details thereof will be described as the followings.
Referring to FIG. 2, FIG. 2 is a partial cross-sectional view of the present invention. Besides, the safety interlink assembly is illustrated with the FIGS. 3 and 4. FIG. 3 is an outer lateral view of the present invention in a preparing state. FIG. 4 is a partial cross-sectional view of the safety interlink assembly in a preparing state.
The safety interlink assembly 30 has the safety key 32 on the top of the receiving chamber 10, a tenon 322 and an elastomer 324 under the safety key 32. The slidable rod 34 is installed on the top of the receiving +chamber 10. The slidable rod 34 has a buckled end 342 and a linking rod 344 connected to the slidable rod 34. A teethed cambered surface 346 is installed on the top of the buckled end 342. The back end of the linking rod 344 has an inclined groove 348. The inclined groove 348 is limited by the action of safety interlink assembly 30, the tenon 322 and buckled end 342. A bolt 50 is installed in the inclined groove 348 so that the bolt 50 is capable of locking the impact unit 22 and resisting the movement of the impact unit 22. The bolt 50 changes a position and releases the impact unit 22 by moving back the slidable rod 34 to drive the linking rod 344. Thereby, in a preparing state, a user can hold the liquid agent ejection device 1 on. Besides, the safety key 32 and the teethed cambered surface 346 of the slidable rod 34 fits in with a ergonomics so that the user can operate the present invention by fingers flexibly.
The movement of the safety interlink assembly is illustrated continuously with FIGS. 5 and 6. FIG. 5 is an outer lateral view of the action of the present invention. FIG. 6 is a partial cross-sectional view of the present invention for showing the movement of the safety interlink assembly. The action of the safety interlink assembly 30 of the present invention is separated by different stages. All the stages of the movement are needed to be operated only by a single finger of the user. The first stage of the movement is to push the safety key 32 down so that the tenon 322 of the safety key 32 and the buckled end 342 of the slidable rod 34 are released from the limitation. Then the slidable rod 34 is capable of sliding backwards. The second stage of the movement is to press the teethed cambered surface 346 downwards so as to slide conveniently the slidable rod 34 backwards and thus to drive the linking rod 344 and the inclined groove 348 at the back end thereof for move backwards. Because the bolt 50 is installed in the inclined groove 348, the bolt 50 is moved upwards by pushing backwards the slidable rod 34 and driving the linking rod 344. Thereby the bolt 50 is pushed and unlocked to release the impact unit 22. The stress of the spring 24 at the back end of the impact unit 22 is applied to strike forwards the elastic body 40 so that the liquid agent of the elastic body 40 is sprayed out strongly in the receiving chamber 10. Therefore, the present invention has a double-secure function so as to prevent from danger of misusing thereof.
Referring to FIGS. 7 and 8, FIG. 7 is illustrated with two combinations of the liquid agent ejection devices of the present invention and FIG. 8 is a cross-sectional view of FIG. 7. Each side of the present invention has the rib 182 and the combination groove 184. The shape of the rib 182 is corresponding to the shape of the combination groove 184 so that the rib 182 of a liquid agent ejection device 30 is capable of connecting to a combination groove 184′ of an adjacent liquid agent ejection device 30′. Besides, the combination groove 184′ of an adjacent liquid agent ejection device 30′ is capable of connecting continuously to the rib 182′. The connecting function thereof is capable of endurable uses of the present invention or ejecting two shots of liquid agent at the same time in an emergency.
The present invention is thus described, and it will be obvious that the same may be varied in many ways. Such variations are not to be regarded as a departure from the spirit and scope of the present invention, and all such modifications as would be obvious to one skilled in the art are intended to be included within the scope of the following claims.

Claims

1. A safety interlink assembly of a liquid agent ejection device comprising:

a receiving chamber having an elastic body of a liquid agent; a seat having an impact unit;

wherein the impact unit is limited by the safety interlink assembly; and the safety interlink assembly comprising:

a safety key being installed on a top of the receiving chamber;

a tenon and an elastic unit under the safety key;

a slidable rod being installed on a top of the receiving chamber;

the slidable rod having a buckled end and interlinking to a linking rod;

an inclined groove at the back end of the linking rod;

a bolt being installed in the inclined groove;

wherein the tenon is limited and buckled to the slidable rod; and the impact unit is buckled limitedly because the inclined groove of the linking rod fixes the bolt so that the bolt will confine the movement of the impact unit.

2. The safety interlink assembly of a liquid agent ejection device as claimed in claim 1, wherein a teethed cambered surface is installed above the buckled end.

3. The safety interlink assembly of a liquid agent ejection device as claimed in claim 1, wherein each lateral side of the liquid agent ejection device has a rib and a combination groove.

4. The safety interlink assembly of a liquid agent ejection device as claimed in claim 1, wherein the seat has a spring; the stress of the spring is applied to the impact unit so as to the impact unit is pushed forwards to generate a fast impact force.

5. The safety interlink assembly of a liquid agent ejection device as claimed in claim 1, wherein the receiving chamber has a pad; and the pad is capable of preventing the liquid agent from permeating the receiving chamber while the liquid agent impacted by the impact unit is sprayed out strongly.

6. The safety interlink assembly of a liquid agent ejection device as claimed in claim 1, wherein the receiving chamber has a receiving groove; and the receiving groove serves to prevent from leakage outwards when the liquid agent impacted by impact unit is sprayed out strongly.