阅读说明：本技术 一种便携式气溶胶灭火器 (Portable aerosol fire extinguisher ) 是由 李双庆 于 2021-02-08 设计创作，主要内容包括：本发明公开了一种便携式气溶胶灭火器,包括用于盛放灭火剂的内筒体,还包括中间筒体、前外筒体、后外筒体、启动机构和保险机构；所述内筒体容纳于所述中间筒体中,所述前外筒体安装于所述中间筒体的前部,所述后外筒体安装于所述中间筒体的后部,所述前外筒体和所述后外筒体均可沿所述中间筒体前后滑动；当所述前外筒体位于其后限位位置、所述后外筒体位于其前限位位置时,所述保险机构通过第一卡接部安装至所述中间筒体,并分别通过第一连接部和第二连接部连接所述前外筒体和所述后外筒体,阻止所述前外筒体和所述后外筒体滑动。本发明的灭火器既具有安全可靠的防止误动作的功能,又能有效避免使用时的高温工况对使用者的伤害。(The invention discloses a portable aerosol fire extinguisher, which comprises an inner cylinder body for containing a fire extinguishing agent, a middle cylinder body, a front outer cylinder body, a rear outer cylinder body, a starting mechanism and a safety mechanism, wherein the middle cylinder body is arranged in the middle of the inner cylinder body; the inner cylinder body is accommodated in the middle cylinder body, the front outer cylinder body is arranged at the front part of the middle cylinder body, the rear outer cylinder body is arranged at the rear part of the middle cylinder body, and both the front outer cylinder body and the rear outer cylinder body can slide back and forth along the middle cylinder body; when the front outer barrel is located at the rear limit position of the front outer barrel and the rear outer barrel is located at the front limit position of the rear outer barrel, the safety mechanism is installed to the middle barrel through the first clamping portion and is connected with the front outer barrel and the rear outer barrel through the first connecting portion and the second connecting portion respectively to prevent the front outer barrel and the rear outer barrel from sliding. The fire extinguisher provided by the invention has the safe and reliable function of preventing misoperation, and can effectively avoid the injury of a high-temperature working condition to a user during use.)

1. A portable aerosol fire extinguisher comprises an inner cylinder body for containing fire extinguishing agents, and is characterized by further comprising a middle cylinder body, a front outer cylinder body, a rear outer cylinder body, a starting mechanism and a safety mechanism; wherein the content of the first and second substances,

the inner cylinder body is accommodated in the middle cylinder body, the front outer cylinder body is arranged at the front part of the middle cylinder body, the rear outer cylinder body is arranged at the rear part of the middle cylinder body, and both the front outer cylinder body and the rear outer cylinder body can slide back and forth along the middle cylinder body;

the starting mechanism comprises a starting button, a trigger switch and a trigger limit fuse, wherein the first end of the trigger limit fuse is connected with the trigger switch to limit the trigger switch, and the second end of the trigger limit fuse is fixedly connected with the front outer barrel, so that the trigger limit fuse can be pulled to be disconnected from the trigger switch when the front outer barrel slides forwards; the trigger switch is arranged in the middle cylinder, and the starting button is mounted to the trigger switch and used for pressing the trigger switch; when the rear outer barrel body slides forwards to a first limit position, the starting button is hidden in the rear outer barrel body, and when the rear outer barrel body slides backwards to a second limit position, the starting button is exposed from the rear outer barrel body;

the safety mechanism comprises a body part, wherein the body part is provided with a first clamping part, a first connecting part and a second connecting part which are respectively used for clamping and matching with the middle barrel, connecting with the front outer barrel and connecting with the rear outer barrel; when preceding outer barrel is located back limiting position, when the outer barrel is located first limiting position in back, safety mechanism passes through first joint portion install extremely middle barrel to respectively through first connecting portion with the second connecting portion connect preceding outer barrel with the outer barrel in back, prevent preceding outer barrel with the outer barrel in back slides.

2. The portable aerosol fire extinguisher of claim 1, wherein a first opening is formed in the middle cylinder body at a position corresponding to the trigger switch, the start button is mounted on the middle cylinder body through the first opening, the start button is provided with a second clamping portion, and the second clamping portion is clamped with the inner wall of the middle cylinder body.

3. The portable aerosol fire extinguisher of claim 1, wherein the rear outer cylinder is provided with a second opening through which the safety mechanism is installed, an outer circumferential surface of a body of the safety mechanism is engaged with the second opening, and the second connecting portion is at least a portion of the outer circumferential surface of the body.

4. The portable aerosol fire extinguisher of claim 3, wherein the front outer cylinder is provided with a limit slider, the limit slider extends from the rear end of the front outer cylinder towards the rear outer cylinder side, the second end of the trigger limit fuse is fixedly connected to the limit slider, the limit slider is provided with a first connecting hole, and the first connecting part on the fuse mechanism comprises a first bayonet lock used for matching with the first connecting hole; when the front outer barrel is located at the rear limiting position and the rear outer barrel is located at the first limiting position, the first connecting hole is located below the second opening, and the first clamping pin is inserted into the first connecting hole.

5. The portable aerosol fire extinguisher according to claim 4, wherein the middle cylinder is provided with a first clamping hole, the first clamping portion of the safety mechanism is clamped with the first clamping hole, the first clamping portion comprises two jaws symmetrically arranged, the first clamping hole comprises two clamping holes correspondingly arranged with the two jaws, when the front outer cylinder slides to the rear limit position, the free end of the limit slider is positioned above the position between the two clamping holes, and the two jaws are respectively positioned at the left side and the right side of the limit slider.

6. The portable aerosol fire extinguisher of claim 4, wherein the middle cylinder is provided with a longitudinal groove extending in a front-back direction, the longitudinal groove penetrates through the inner wall and the outer wall of the middle cylinder, and the second end of the trigger limit safety is led out from the inside of the middle cylinder through the longitudinal groove and fixed to the limit slider.

7. The portable aerosol fire extinguisher of claim 6, wherein the intermediate cylinder body is further provided with a sliding groove for matching with the limiting slider, and the longitudinal groove is arranged at the bottom of the sliding groove.

8. The portable aerosol fire extinguisher of any one of claims 1-7, wherein the middle cylinder is provided with a front guide chute and a rear guide chute, the inner wall of the front outer cylinder is provided with a front guide slider, the inner wall of the rear outer cylinder is provided with a rear guide slider, the front guide slider is in sliding fit with the front guide chute, and the rear guide slider is in sliding fit with the rear guide chute.

9. The portable aerosol fire extinguisher of any one of claims 1-8, wherein the safety mechanism further comprises a pull ring pivotally mounted on the body portion.

10. The portable aerosol fire extinguisher of any one of claims 1 to 9, wherein the middle cylinder comprises a middle cylinder body and a rear end cap, the rear end of the middle cylinder body comprises a first protrusion protruding backward at the upper side and a second protrusion at the lower side, the front end of the rear end cap comprises a third protrusion protruding forward at the left and right sides, and the first protrusion, the second protrusion and the third protrusion are spliced together in a shape-fitting manner; the front end of the third protruding part is also provided with a protruding block protruding forwards, a groove is arranged at a corresponding position on the middle cylinder body, and the protruding block is matched with the groove in shape.

Technical Field

The invention relates to the technical field of fire extinguishers, in particular to a portable aerosol fire extinguisher.

Background

The fire extinguisher is an indispensable fire extinguishing device in modern life and production. When a fire disaster occurs, the fire-fighting device which is simple, easy to use, safe and stable and has certain fire-fighting capacity can assist people to control the fire disaster in a primary stage, and various losses are effectively reduced. Compared with traditional fire extinguishers of dry powder, water base, carbon dioxide and the like, the aerosol fire extinguisher is particularly suitable for occasions such as families, automobiles, electrified equipment places and the like due to the characteristics of strong fire extinguishing capability, small volume, light weight, no pressure storage, no pollution of fire extinguishing agents and the like, and can effectively extinguish primary fire of solid, liquid, gas and electric fire.

The aerosol fire extinguisher in the prior art mainly has the following problems: the temperature of the nozzle is high, so that secondary damage to personnel and equipment is easily caused; the temperature of the fire extinguisher shell is higher after the product is sprayed; the user needs to be close to the fire source, which is easy to cause injury.

In addition, the characteristics and the starting mode of the aerosol fire extinguishing agent determine that the starting and safety protection device of the fire extinguisher needs to be specially designed so as to avoid misoperation caused by external force or static electricity and the like to the maximum extent.

Therefore, the portable aerosol fire extinguisher has the characteristics of small size, light weight and the like, and has important significance for the portable aerosol fire extinguisher by further improving the safety and reliability of preventing misoperation of the fire extinguisher and avoiding the damage of a user to a high-temperature working condition.

Disclosure of Invention

Based on the current situation, the main object of the present invention is to provide a portable aerosol fire extinguisher, which not only has the function of preventing false operation safely and reliably, but also can effectively avoid the damage of high temperature working conditions to users during use.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

a portable aerosol fire extinguisher comprises an inner cylinder body for containing a fire extinguishing agent, a middle cylinder body, a front outer cylinder body, a rear outer cylinder body, a starting mechanism and a safety mechanism; wherein the content of the first and second substances,

the inner cylinder body is accommodated in the middle cylinder body, the front outer cylinder body is arranged at the front part of the middle cylinder body, the rear outer cylinder body is arranged at the rear part of the middle cylinder body, and both the front outer cylinder body and the rear outer cylinder body can slide back and forth along the middle cylinder body;

the starting mechanism comprises a starting button, a trigger switch and a trigger limit fuse, wherein the first end of the trigger limit fuse is connected with the trigger switch to limit the trigger switch, and the second end of the trigger limit fuse is fixedly connected with the front outer barrel, so that the trigger limit fuse can be pulled to be disconnected from the trigger switch when the front outer barrel slides forwards; the trigger switch is arranged in the middle cylinder, and the starting button is mounted to the trigger switch and used for pressing the trigger switch; when the rear outer barrel body slides forwards to a first limit position, the starting button is hidden in the rear outer barrel body, and when the rear outer barrel body slides backwards to a second limit position, the starting button is exposed from the rear outer barrel body;

the safety mechanism comprises a body part, wherein the body part is provided with a first clamping part, a first connecting part and a second connecting part which are respectively used for clamping and matching with the middle barrel, connecting with the front outer barrel and connecting with the rear outer barrel; when preceding outer barrel is located back limiting position, when the outer barrel is located first limiting position in back, safety mechanism passes through first joint portion install extremely middle barrel to respectively through first connecting portion with the second connecting portion connect preceding outer barrel with the outer barrel in back, prevent preceding outer barrel with the outer barrel in back slides.

Preferably, the barrel corresponds in the middle of on the barrel the position department of trigger switch is equipped with first trompil, start button passes through first trompil is installed on the barrel in the middle of, start button has second joint portion, second joint portion joint the inner wall of barrel in the middle of.

Preferably, a second opening is formed in the rear outer cylinder, the safety mechanism is mounted through the second opening, the outer peripheral surface of the body of the safety mechanism is matched with the second opening, and the second connecting portion is at least one portion of the outer peripheral surface of the body.

Preferably, a limiting slide block is arranged on the front outer cylinder body, the limiting slide block extends from the rear end of the front outer cylinder body to the rear outer cylinder body side, the second end of the trigger limiting safety is fixedly connected to the limiting slide block, a first connecting hole is formed in the limiting slide block, and a first connecting part on the safety mechanism comprises a first clamping pin used for being matched with the first connecting hole; when the front outer barrel is located at the rear limiting position and the rear outer barrel is located at the first limiting position, the first connecting hole is located below the second opening, and the first clamping pin is inserted into the first connecting hole.

Preferably, be equipped with first joint hole on the barrel in the middle of, safety mechanism first joint portion joint first joint hole, wherein, first joint portion includes two jack catchs that the symmetry set up, first joint hole include with two jack catchs correspond two joint holes that set up, work as in the time of the preceding outer barrel slides to back limiting position, limiting slide's free end is located the top of position between two joint holes, two jack catchs are located respectively limiting slide's the left and right sides.

Preferably, a longitudinal groove extending in the front-rear direction is formed in the middle cylinder, the longitudinal groove penetrates through the inner wall and the outer wall of the middle cylinder, and the second end of the trigger limit fuse is led out from the inside of the middle cylinder through the longitudinal groove and is fixed to the limit sliding block.

Preferably, the middle cylinder body is further provided with a sliding groove used for being matched with the limiting sliding block, and the longitudinal groove is formed in the bottom of the sliding groove.

Preferably, the middle cylinder is provided with a front guide sliding groove and a rear guide sliding groove, the inner wall of the front outer cylinder is provided with a front guide sliding block, the inner wall of the rear outer cylinder is provided with a rear guide sliding block, the front guide sliding block is in sliding fit with the front guide sliding groove, and the rear guide sliding block is in sliding fit with the rear guide sliding groove.

Preferably, the safety mechanism further comprises a pull ring pivotally mounted on the body portion.

Preferably, the middle cylinder comprises a middle cylinder body and a rear end cover, the rear end of the middle cylinder body comprises a first protruding part protruding backwards and located on the upper side and a second protruding part located on the lower side, the front end of the rear end cover comprises third protruding parts protruding forwards and located on the left side and the right side, and the first protruding part, the second protruding part and the third protruding parts are spliced together in a shape matching manner; the front end of the third protruding part is also provided with a protruding block protruding forwards, a groove is arranged at a corresponding position on the middle cylinder body, and the protruding block is matched with the groove in shape.

When the fire extinguisher is not in use, the safety mechanism is arranged in place, the front outer cylinder and the rear outer cylinder are fixed and cannot slide, the starting button is reliably covered in the rear outer cylinder, the triggering limit safety is also kept in a limit state, and the fire extinguisher cannot be triggered to start under the guarantee of multiple safety measures, so that the fire extinguisher is very safe and reliable. When needing to use this fire extinguisher, only need extract safety mechanism, alright preceding outer barrel of forward slip afterwards so that trigger spacing insurance and throw off spacingly, the outer barrel of back slip is in order to expose the start button, alright press the start button this moment and form and trigger, implement to put out a fire, easy operation is swift.

Simultaneously, this kind of sliding design of preceding outer barrel and the outer barrel in back still makes fire extinguisher structure small and exquisite and be convenient for accomodate and carry under non-user state, the length dimension of fire extinguisher is effectively lengthened under user state, the outer barrel in back constitutes the handle of backward extension, preceding outer barrel constitutes the spray tube of forward extension, thereby guaranteed that user's handheld position had both avoided the aerosol to take place and the high temperature environment at blowout position, the source of a fire of waiting to extinguish has further been kept away from again, avoided the user to receive the injury of high temperature operating mode.

Other advantages of the present invention will be described in the detailed description, and those skilled in the art will understand the technical features and technical solutions presented in the description.

Drawings

Preferred embodiments of the portable aerosol fire extinguisher according to the present invention will be described below with reference to the accompanying drawings. In the drawings:

FIG. 1 schematically illustrates the structure of a portable aerosol fire extinguisher according to a preferred embodiment of the present invention in a non-use state;

FIG. 2 schematically illustrates the portable aerosol fire extinguisher of FIG. 1 in a configuration in use;

FIG. 3 schematically illustrates the structure of the intermediate cylinder in the portable aerosol fire extinguisher of FIG. 1;

FIG. 4 schematically illustrates the structure of the inner cylinder in the portable aerosol fire extinguisher of FIG. 1;

FIG. 5 schematically illustrates an exploded configuration of the intermediate cylinder and the actuating mechanism in the portable aerosol fire extinguisher of FIG. 1;

FIG. 6 schematically illustrates a partial structure of an actuating mechanism in the portable aerosol fire extinguisher of FIG. 1, wherein the upper half of the intermediate cylinder is hidden from view;

FIG. 7 schematically illustrates the structure of a safety mechanism in the portable aerosol fire extinguisher of FIG. 1;

fig. 8 schematically shows a sectional structure of the front and rear outer cylinders in the portable aerosol fire extinguisher of fig. 1.

Detailed Description

In order to solve the main problems of the portable aerosol fire extinguisher in the prior art, the invention provides a portable aerosol fire extinguisher.

Referring to fig. 1 to 8, a portable aerosol fire extinguisher according to a preferred embodiment of the present invention includes a front outer cylinder 1, a rear outer cylinder 2, a safety mechanism 3, an intermediate cylinder 4, an actuating mechanism 16, an inner cylinder 8 for containing a fire extinguishing agent (i.e., an aerosol generating medium), and the like.

The inner cylinder body 8 is accommodated in the middle cylinder body 4, the front outer cylinder body 1 is sleeved on the front portion of the middle cylinder body 4, the rear outer cylinder body 2 is sleeved on the rear portion of the middle cylinder body 4, and the front outer cylinder body 1 and the rear outer cylinder body 2 can slide back and forth along the middle cylinder body 4. For example, fig. 1 shows a structure in which the front outer cylinder 1 slides backward to its rear limit position, and the rear outer cylinder 2 slides forward to its front limit position (referred to as a first limit position in the present invention to be distinguished from the corresponding limit position of the front outer cylinder 1), that is, a non-use state; fig. 2 shows a structure in which the front outer cylinder 1 is slid forward to its front limit position, and the rear outer cylinder 2 is slid backward to its rear limit position (referred to as a second limit position in the present invention to be distinguished from the corresponding limit position of the front outer cylinder 1), that is, a use state.

Referring to fig. 5-6, the activation mechanism 16 includes an activation button 5, a trigger switch 9 (e.g., a piezoceramic trigger switch), and a trigger limit fuse 10. The starting button 5 is used for pressing the trigger switch 9 in a use state so as to trigger the reaction of the aerosol generating medium to generate aerosol and extinguish fire; the trigger limit fuse 10 is used to prevent the trigger switch 9 from being operated by mistake in a non-use state.

As shown in fig. 6, a first end of the trigger limit fuse 10 is connected to the trigger switch 9 to limit the trigger switch 9, and prevent the movable member 91 of the trigger switch 9 from being pushed. The second end of the trigger limit fuse 10 is fixedly connected with the front outer cylinder 1, so that when the front outer cylinder 1 slides forwards, the trigger limit fuse 10 can be pulled, the first end of the trigger limit fuse 10 is disconnected from the trigger switch 9, and the movable part 91 of the trigger switch 9 can be pressed to form triggering. For example, in the preferred embodiment shown in the drawings, the first end of the trigger limit guard 10 passes through a hole in the movable part 91 of the trigger switch 9, so that when the movable part 91 is pressed, the trigger limit guard 10 abuts against the upper end surface of the fixed housing 92 of the trigger switch 9, so that the movable part 91 cannot move downward, and thus triggering cannot be achieved.

Wherein, as shown in fig. 3 and 5, the trigger switch 9 is provided in the intermediate cylinder 4, and the start button 5 is mounted to the trigger switch 9 for pressing the trigger switch 9. When the rear outer cylinder 2 slides forward to the first limit position, as shown in fig. 1 and 7, the start button 5 is hidden in the rear outer cylinder 2 and cannot be contacted, i.e. pressed; when the rear outer cylinder 2 slides backward to a second limit position, as shown in fig. 2, the start button 5 is exposed from the rear outer cylinder 2 and can be pressed.

As shown in fig. 7, the safety mechanism 3 includes a main body 30, and the main body 30 has a first clamping portion 13, a first connecting portion and a second connecting portion, which are respectively used for clamping and matching with the middle cylinder 4, connecting with the front outer cylinder 1 and connecting with the rear outer cylinder 2. When preceding outer barrel 1 is located back limit position, when the outer barrel 2 of back is located first limit position, insurance mechanism 3 passes through first joint portion 13 is installed extremely middle barrel 4, and respectively through first connecting portion with the second connecting portion is connected preceding outer barrel 1 with the outer barrel 2 of back stops preceding outer barrel 1 with the outer barrel 2 of back slides, guarantees from this that trigger limit insurance 10 is in can spacing state, start button 5 is in the state that can't press.

The fire extinguisher is characterized in that the safety mechanism 3 is installed in place to fix the front outer cylinder body 1 and the rear outer cylinder body 2 so as not to slide under various non-use states such as transportation, storage and the like, the starting button 5 is reliably covered in the rear outer cylinder body 2, the triggering limit safety 10 is also kept in a limit state, and the fire extinguisher cannot be triggered to start under the guarantee of multiple safety measures, so that the fire extinguisher is very safe and reliable. When the fire extinguisher needs to be used, the safety mechanism 3 only needs to be pulled out, then the front outer cylinder body 1 can slide forwards to enable the trigger limit safety 10 to be separated from the limit, the rear outer cylinder body 2 can slide backwards to expose the starting button 5, the starting button 5 can be pressed to trigger, the fire extinguishment is implemented, and the operation is simple and fast.

Simultaneously, this kind of sliding design of preceding outer barrel 1 and the outer barrel 2 in back still makes fire extinguisher structure small and exquisite and be convenient for accomodate and carry under non-user state, and the length dimension of fire extinguisher is effectively lengthened under user state, the outer barrel 2 in back constitutes the handle of backward extension, preceding outer barrel 1 constitutes the spray tube of forward extension, thereby guaranteed that user's handheld position had both avoided the aerosol to take place and the high temperature environment at blowout position, the fire source of treating going out has further been kept away from again, avoided the user to receive the injury of high temperature.

In addition, when the aerosol fire extinguisher is used, the temperature at the nozzle position of the inner cylinder body 8 is often above 300 ℃, which is easy to cause secondary damage to personnel and equipment. When the fire extinguisher is used, the front outer cylinder body 1 extends forwards, and the nozzle of the inner cylinder body 8 is hidden in the front outer cylinder body 1, so that the real outlet position of the fire extinguishing agent is changed into the front end of the front outer cylinder body 1, the temperature of the fire extinguishing agent at the outlet can be effectively reduced, and secondary damage to people or objects caused by high temperature when the aerosol generating agent is sprayed is avoided.

Preferably, as shown in fig. 3 and 5, a first opening 17 is formed in the middle barrel 4 at a position corresponding to the trigger switch 9 and the start button 5, the start button 5 is installed on the middle barrel 4 through the first opening 17, the start button 5 is provided with a second clamping portion 51, and the second clamping portion 51 is clamped on the inner wall of the middle barrel 4.

When the installation, second joint portion 51 slides down along the downthehole wall of first trompil 17, until crossing the inner wall edge of barrel 4 in the middle of to the inner wall of barrel 4 in the middle of the joint, thereby make start button 5 can not drop by oneself. When the starting button 5 is pressed in use, if the limit of the limit fuse 10 is not triggered, the starting button 5 can smoothly move downwards, so that the movable part 91 of the trigger switch 9 is pushed to form triggering.

Preferably, as shown in fig. 7 and 8, the rear outer cylinder 2 is provided with a second opening 21, the safety mechanism 3 is mounted through the second opening 21, an outer peripheral surface of the body portion 30 of the safety mechanism 3 is fitted into the second opening 21, and the second connecting portion is at least a part of the outer peripheral surface of the body portion 30 of the safety mechanism 3.

Because this external peripheral surface of body portion of safety mechanism 3 directly forms the cooperation with the second trompil 21 on the outer barrel 2 in back for this safety mechanism 3 is very firm to the spacing of the outer barrel 2 in back, thereby under the condition of not pulling out safety mechanism 3, the outer barrel 2 in back can't slide backward at all, just also can not expose the start button 5 all the time, thereby provides the very high assurance of preventing maloperation.

Preferably, when the rear outer cylinder 2 is slid to the second limit position (i.e. its rear limit position), the start button 5 is located just below the second opening 21, as shown in fig. 2, so that the start button 5 can be conveniently pressed through the second opening 21. That is, in the preferred embodiment, the second opening 21 has two functions, in the non-use state, for installing the safety mechanism 3 and limiting the position of the rear outer cylinder 2, and in the use state, for exposing the start button 5 and facilitating the pressing of the start button 5.

Preferably, as shown in fig. 5 to 7, a limiting slider 11 is arranged on the front outer cylinder 1, the limiting slider 11 extends from the rear end of the front outer cylinder 1 toward the rear outer cylinder 2, the second end of the trigger limiting fuse 10 is fixedly connected to the limiting slider 11, a first connecting hole 14 is formed in the limiting slider 11, and a first connecting portion on the fuse mechanism 3 includes a first bayonet 12 for being matched with the first connecting hole 14. When the front outer cylinder 1 is located at the rear limit position and the rear outer cylinder 2 is located at the first limit position (i.e. the front limit position thereof), the first connection hole 14 is located below the second opening 21, and the first bayonet 12 is inserted into the first connection hole 14.

Alternatively, the rear outer cylinder 2 may not be provided with the complete second opening, but a semicircular hole or a rectangular opening is respectively provided at the butt joint position of the front outer cylinder 1 and the rear outer cylinder 2, in this case, one part of the safety mechanism 3 is matched with the semicircular hole or the rectangular opening on the rear outer cylinder 2, and the other part is matched with the semicircular hole or the rectangular opening on the front outer cylinder 1, so that the safety mechanism 3 can be mounted to the middle cylinder 4, and the front outer cylinder 1 and the rear outer cylinder 2 are limited at the same time. This alternative includes with the main difference of aforementioned preferred scheme, in this alternative, the body portion 30 periphery of safety mechanism 3 can not act as the second connecting portion, and at this moment, first connecting portion and second connecting portion all can adopt structures such as bayonet lock, and then all need set up the jack with bayonet lock complex correspondingly on preceding outer barrel 1 and the outer barrel 2 of back to the cooperation through bayonet lock and jack is spacing outer barrel 1 and the outer barrel 2 of back respectively in the front.

Preferably, as shown in fig. 3 and 7, a first clamping hole 15 is formed in the middle cylinder 4, and the first clamping portion 13 of the safety mechanism 3 is clamped in the first clamping hole 15. Wherein, first joint portion 13 includes two jack catchs that the symmetry set up, first joint hole 15 include with two jack catchs correspond two joint holes that set up, work as preceding outer barrel 1 slides when limiting position to the back, limiting slide 11's free end is located the top of position between two joint holes, two jack catchs are located respectively limiting slide 11's the left and right sides. Two jack catchs are from the first joint hole 15 of the left and right sides joint respectively of spacing slider 11, have further realized compact structure and the firm advantage of joint to make safety mechanism 3 neither easily drop by oneself, be unlikely to again to extract the difficulty, compromise safe and reliable and use convenient.

Preferably, as shown in fig. 1, the safety mechanism 3 further comprises a pull ring 31 pivotally mounted on the body portion 30. In the non-use state, the pull ring 31 can be pivoted to the falling state, so that the pull ring 31 is basically flush with the outer surface of the body part 30, when the fire extinguisher needs to be used for extinguishing fire, only the pull ring 31 needs to be turned up, and the safety mechanism 3 can be conveniently pulled out by pulling the pull ring 31, so that the fire extinguisher can be quickly put into use in an emergency.

Preferably, as shown in fig. 3, a longitudinal groove 41 extending in a front-back direction is provided on the middle cylinder 4, for example, extends from the vicinity of the first engaging hole 15 toward the front end side, the longitudinal groove 41 penetrates through the inner wall and the outer wall of the middle cylinder 4, and the second end of the trigger limit fuse 10 is led out from the inside of the middle cylinder 4 through the longitudinal groove 41 and fixed to the free end of the limit slider 11. When the front outer cylinder 1 slides forward, the limit slider 11 moves above the longitudinal groove 41, and a part of the trigger limit fuse 10 can move along the longitudinal groove 41. Due to the existence of the longitudinal groove 41, when the front outer barrel body 1 slides forwards, the trigger limit fuse 10 can move forwards without obstacles, the sliding difficulty of the front outer barrel body 1 cannot be increased, and the use convenience is further guaranteed.

Preferably, as shown in fig. 3, a sliding groove 410 for cooperating with the limiting slider 11 is further provided on the middle cylinder 4, and the longitudinal groove 41 is provided at the bottom of the sliding groove 410. When the front outer cylinder body 1 slides forwards, the limiting slide block 11 can slide under the guiding action of the sliding groove 410, so that the front outer cylinder body 1 is effectively prevented from rotating, and unnecessary torsion or blocking of the triggering limiting fuse 10 is avoided.

Preferably, as shown in fig. 3, the middle cylinder 4 is further provided with a front guide sliding groove 42 which is preferably bilaterally symmetrical and a rear guide sliding groove 43 which is preferably bilaterally symmetrical, as shown in fig. 8, the inner wall of the front outer cylinder 1 is provided with a front guide sliding block 18, the inner wall of the rear outer cylinder 2 is provided with a rear guide sliding block 19, the front guide sliding block 18 is in sliding fit with the front guide sliding groove 42, and the rear guide sliding block 19 is in sliding fit with the rear guide sliding groove 43.

Through the sliding fit of direction slider and direction spout, both can conveniently carry out good direction to the slip of preceding outer barrel 1 and back outer barrel 2, the contact of accessible direction slider and the tip of direction spout realizes spacingly again to the preceding limit position and the back limit position of injecing preceding outer barrel 1 and back outer barrel 2, thereby the use and the accomodating of the fire extinguisher of being convenient for.

Preferably, as shown in fig. 5, the intermediate cylinder 4 includes an intermediate cylinder body 44 and a rear end cap 7, and the rear end of the intermediate cylinder body 44 includes a first protrusion 45 and a second protrusion 46 protruding rearward, wherein the first protrusion 45 is located at an upper side, i.e., a side corresponding to the start button 5, and the second protrusion 46 is located at a lower side, i.e., a side away from the start button 5. The edge profiles of both first protrusion 45 and second protrusion 46 are substantially vertically symmetrical, first opening 17 is provided on first protrusion 45, and trigger switch 9 may be carried by second protrusion 46. The front end of the rear end cover 7 includes two third protruding portions 47 protruding forward and located at the left and right sides, and the first protruding portion 45, the second protruding portion 46 and the third protruding portion 47 are spliced together in a shape matching manner to jointly form a cylinder wall at a corresponding position of the middle cylinder 4. The front end of the third protruding part 47 is further provided with a projection 48 protruding forwards, a groove 49 is arranged at a corresponding position on the middle cylinder body 44, and the projection 48 is matched with the groove 49 in shape to circumferentially limit the middle cylinder body 44 and the rear end cover 7.

The removable rear end cap 7 is provided to facilitate assembly of the fire extinguisher, particularly of the actuating mechanism 16. And set up rear end cap 7 and middle barrel body 44 to the edge form fit concatenation and have recess and lug, can obviously strengthen the fastness and the reliability of concatenation, make the stable in structure of middle barrel 4.

After the rear end cover 7 is completely spliced with the intermediate cylinder body 44, the rear end cover 7 can be fastened to the intermediate cylinder body 44 by fastening screws. Preferably, a fastening screw is screwed in from the end face of the rear end cap 7.

Preferably, the middle cylinder body 44 can be configured as a structure formed by splicing an upper half cylinder and a lower half cylinder, and the two half cylinders can be assembled together through a buckling structure. The front guide chute 42 and the rear guide chute 43 can be preferably arranged at the splicing seam of the upper half cylinder and the lower half cylinder. Preferably, the intermediate cylinder 4 may further include an intermediate cylinder front cover 6, and as shown in fig. 3, the intermediate cylinder front cover 6 may be provided with an internal thread so as to be combined with an external thread provided at the front end of the intermediate cylinder body 44. After the inner cylinder 8 is installed in the middle cylinder 4, the middle cylinder front cover 6 can be screwed to the middle cylinder body 44, so that the inner cylinder 8 is positioned, and two half cylinders assembled together in a splicing manner are further fixed.

In the fire extinguisher according to the preferred embodiment of the present invention, the inner cylinder 8 is an aerosol generator cylinder and has a lead wire (not shown), the trigger switch 9 is a piezoelectric ceramic switch, and the lead wire of the inner cylinder 8 is connected to the trigger switch 9, so that the generation and ejection of the aerosol can be triggered by pressing the trigger switch 9, thereby achieving a fire extinguishing function. An example structure of the inner cylinder 8 is shown in fig. 4, which is prior art.

In conclusion, the fire extinguisher provided by the invention has the advantages of high safety guarantee, small volume, convenience in use and the like, breaks through the traditional appearance and use mode of the fire extinguisher, and has the advantages of elegant appearance and the like.

Specifically, the fire extinguisher of the present invention has the following advantages:

(1) through the slidingtype design of preceding, the outer barrel of back, the starting button design of putting out a fire need open safety mechanism earlier on the middle barrel under the outer barrel of back, during the use, makes preceding outer barrel slide forward, drives the spacing insurance of triggering of connecting on preceding outer barrel (or spacing slider) to it is spacing to remove to trigger, and the outer barrel of back slides backward and exposes the starting button, just can start. Therefore, the multiple protection design can effectively protect the starting button and the piezoelectric ceramic trigger switch connected below the starting button from misoperation caused by external force, static electricity and the like.

(2) The sliding design of the front and rear outer cylinders keeps the characteristics of small size and portability of the aerosol fire extinguisher when the fire extinguisher is in a non-working state, and the length of the fire extinguisher can be obviously prolonged when the fire extinguisher is in a use state, so that a user can be far away from a fire source as far as possible, and the fire source is prevented from being damaged by high temperature.

(3) The slidingtype design of preceding, outer barrel of back, when the fire extinguisher uses, preceding outer barrel slides forward, and the nozzle of interior barrel is hidden in the outer barrel in the front, makes the real exit position of fire extinguishing agent become preceding outer barrel front end mouth, effectively reduces exit fire extinguishing agent temperature, avoids the secondary damage that barrel nozzle brought people or thing because of high temperature when spouting in the aerosol propellant.

(4) The slidingtype design of preceding, the outer barrel of back slides to the rear portion when using to make handheld position avoid the interior barrel of aerosol propellant, the overall process of putting and the handheld position of putting after spouting can not receive the influence that the barrel generates heat in the aerosol propellant.

It will be appreciated by those skilled in the art that the above-described preferred embodiments may be freely combined, superimposed, without conflict.

It will be understood that the embodiments described above are illustrative only and not restrictive, and that various obvious and equivalent modifications and substitutions for details described herein may be made by those skilled in the art without departing from the basic principles of the invention.