Portable fire extinguisher
View Patent ↗A portable fire extinguisher includes a housing ( 3 ) and a cartridge ( 4 ) arranged within the housing ( 3 ). The cartridge ( 4 ) is fixedly connected at a bottom thereof to the housing ( 3 ) via a fastening device ( 40 ). This on the one hand facilitates shifting, and on the other hand allows the cartridge ( 4 ) to be fixed appropriately in the housing ( 3 ), thus not easily rotated or loosened, also, the need of a production site for waiting for silicone solidification by standing for seven to eight hours is avoided when silicone injection for fixing is used, thus improving production efficiency.
1. A portable fire extinguisher, comprising a housing and a cartridge arranged within the housing, wherein a bottom of the cartridge is fixedly connected to the housing via a fastening device;
a top end of the cartridge is provided with an explosion venting device; the explosion venting device comprises a frictional layer, a connection rod, a connection rod guiding unit and a connection rod limiting device;
the connection rod is connected with the cartridge cover;
the frictional layer is provided between the connection rod and an outer wall of the cartridge; when the connection rod is guided by the connection rod guiding unit to displace along a direction of a hot air stream ejected by the cartridge, the frictional layer provides a frictional resistance and a buffering force for the connection rod;
the connection rod guiding unit is a device capable of providing a guiding function for the connection rod when the same is moving;
the connection rod limiting device is a device capable of limiting the connection rod when an extremity of the connection rod reaches a spout of the cartridge.
2. The portable fire extinguisher according to claim 1 , wherein the fastening device includes a screw provided at the bottom of the cartridge, a nut matched with the screw, and a rotation-stopping body provided at the bottom of the housing and capable of preventing the screw from rotating.
3. The portable fire extinguisher according to claim 1 , wherein the fastening device is a screw running through the bottom of the housing to fixedly connect the housing with the bottom of the cartridge.
4. The portable fire extinguisher according to claim 1 , wherein the connection rod guiding unit is a guiding ring fixedly connected with the connection rod, or is a guiding groove provided on the outer wall of the cartridge and capable of enabling the connection rod to move axially along the guiding groove; the connection rod limiting device comprises a flanging fixedly connected with a jet end of the cartridge, and a clamping claw for fixing the connection rod; an elastic body is arranged between the flanging and the connection rod guiding unit, or is arranged on a side surface of the flanging.
5. The portable fire extinguisher according to claim 1 , wherein the housing comprises a top cover; the top cover comprises a top cover body and a clamping wall fixedly connected thereto; the clamping wall is arranged at an inner side of the top cover body and an extremity of the clamping wall is provided with a clamping hook, and a cavity is reserved between the clamping hook and the top cover body; a fixture block is arranged in the cavity between the clamping wall and the top cover body.
6. The portable fire extinguisher according to claim 1 , wherein the bottom of the housing is provided with a base; a handle and an extension and retraction control device are provided on the base; extension and retraction of the handle are implemented through the extension and retraction control device.
7. The portable fire extinguisher according to claim 6 , wherein the extension and retraction control device comprises a locating groove arranged on the base and capable of enabling the handle to slide along the locating groove, and a limiting device capable of limiting the sliding of the handle.
8. The portable fire extinguisher according to claim 7 , wherein the limiting device comprises a limiting elastic sheet, a limiting screw and a limiting groove; the limiting elastic sheet is arranged in the locating groove; one side surface of the handle is provided with the limiting screw clamped with the base and the other side surface of the handle ( 10 ) is provided with the limiting groove for making the limiting elastic sheet locked; a bottom cover of the base is provided thereon with a chute capable of enabling the limiting screw to slide along the chute and capable of limiting the limiting screw.
9. The portable fire extinguisher according to claim 8 , wherein the handle comprises a curved bar and a holder; one end of the curved bar is arranged in the locating groove and capable of sliding along the locating groove; the other end of the curved bar is provided with the holder.
10. The portable fire extinguisher according to claim 9 , wherein corresponding cavities are arranged on the curved bar and the holder; a push button and piezoelectric ceramics are arranged in the holder in turn; one end of the push button extends outside the holder and the other end is provided with a pin hole; an elastic clamping claw and a convex ring are arranged on the pin hole; the outer wall of the handle is provided with a safety pin; a side wall of one end of the safety pin is provided with a concave ring locked with the convex ring and having an extremity extending into the pin hole; the other end of the safety pin is provided with a pull ring.
11. The portable fire extinguisher according to claim 9 , wherein corresponding cavities are arranged on the curved bar and the holder; a push button and a piezoelectric ceramics are arranged in the holder in turn; one end of the push button extends outside the holder and the other end is provided with a pin hole; a limiting ring is arranged outside the pin hole; an outer wall of the holder is provided with a safety pin; the safety pin comprises a connection part and a clamping head connected to the lower end of the connection part; the clamping head comprises one or more first elastic sheets, and a second elastic sheet connected to extremity of the first elastic sheet and forming included angle with the first elastic sheet; the first elastic sheets and the second elastic sheet are respectively provided with degrees of freedom; an extremity of the second elastic sheet extends outside the pin hole and is limited through the limiting ring; the upper end of the connection part is provided with a pull ring.
12. The portable fire extinguisher according to claim 2 , wherein the bottom of the housing is provided with a base; a handle and an extension and retraction control device are provided on the base; extension and retraction of the handle are implemented through the extension and retraction control device.
13. The portable fire extinguisher according to claim 3 , wherein the bottom of the housing is provided with a base; a handle and an extension and retraction control device are provided on the base; extension and retraction of the handle are implemented through the extension and retraction control device.
14. The portable fire extinguisher according to claim 1 , wherein the bottom of the housing is provided with a base; a handle and an extension and retraction control device are provided on the base; extension and retraction of the handle are implemented through the extension and retraction control device.
15. The portable fire extinguisher according to claim 4 , wherein the bottom of the housing is provided with a base; a handle and an extension and retraction control device are provided on the base; extension and retraction of the handle are implemented through the extension and retraction control device.
16. The portable fire extinguisher according to claim 5 , wherein the bottom of the housing is provided with a base; a handle and an extension and retraction control device are provided on the base; extension and retraction of the handle are implemented through the extension and retraction control device.