CN213654528U

CN213654528U - Permanent magnet releaser for fireproof door

Info

Publication number: CN213654528U
Application number: CN202021845715.4U
Authority: CN
Inventors: 刘苏明
Original assignee: Suzhou Lilin Safety Technology Co ltd
Current assignee: Suzhou Lilin Safety Technology Co ltd
Priority date: 2020-08-30
Filing date: 2020-08-30
Publication date: 2021-07-09
Anticipated expiration: 2030-08-30

Abstract

The utility model discloses a fire door permanent magnet releaser, which comprises a permanent magnet fixing seat and a positioning lock rod, wherein the permanent magnet fixing seat comprises a front end plate, a fixing seat body and a rear end plate, a through hole matched with a push rod and a through hole matched with a rotating shaft are vertically communicated in the middle of the fixing seat body in the transverse and longitudinal direction, the outer end surface of the push rod is fixedly connected with an adsorption block made of magnetic conductive material, the inner end surface is matched with a reset spring, the middle section of the push rod comprises an upper section of rack rod and a lower section of rack rod, both ends of the rotating shaft are fixedly connected with rotating permanent magnets, both sides of the rear part of the fixing seat body are also provided with fixed permanent magnets, the positioning lock rod comprises an adsorption plate, a positioning rod and a base, the fire door permanent magnet releaser utilizes the adsorption effect between the permanent magnets and the magnetic conductive material to adsorb the, the release after the stroke is finished once again, the manufacturing cost is low, the failure rate is low, and the device is simple and practical.

Description

Permanent magnet releaser for fireproof door

Technical Field

The utility model relates to a fire safety equipment technical field, concretely relates to prevent fire door permanent magnetism releaser.

Background

Fireproof doors of existing markets, office buildings and residential buildings are common fire fighting equipment on public place safety passages, and in order to improve fire safety, the building buildings are generally provided with fire fighting passages so as to serve as passages for implementing rescue and evacuation of trapped people when fire occurs. The fire control passageway all can be provided with prevents fire door structure, prevents that fire door main function lies in the conflagration after taking place, through closing preventing fire door, can prevent dense cigarette and get into the fire control passageway. Usually when dense smoke enters into the fire passage, the fire door can self-closing, and the self-closing of fire door mainly utilizes the door closer to realize, and because the self-closing function of door closer, need keep fire door open when normally open extremely inconvenient under the emergency of personnel evacuation, perhaps need often open the door the place and need fix the door location fixed, also need convenient release door simultaneously, so prevent that the fire door releaser just obtains market's general acceptance.

And traditional fire door releaser's structure is too complicated, and the accessory is various, and processing cost is high, and the fault point is more to still design electromagnetic drive's releaser, its reliability is poor.

Disclosure of Invention

The utility model discloses the purpose: to the technical problem that the existing fire door releaser is complex in structure, multiple in accessories, high in processing cost and multiple in fault points, and the electromagnetic drive releaser is poor in reliability, the fire door permanent magnet releaser is designed, the positioning lock rod is adsorbed by the aid of adsorption between the permanent magnet and a magnetic conductive material, the permanent magnet comprises a fixed permanent magnet and a rotating permanent magnet, manufacturing cost is low, the fault rate is low, and the fire door releaser is simple and practical.

The technical scheme adopted for solving the problems is as follows:

a permanent magnet releaser of a fireproof door, which comprises a permanent magnet fixing seat and a positioning lock rod,

the permanent magnet fixing seat is fixed on a wall and comprises a front end plate, a fixing seat body and a rear end plate, wherein the middle part of the front end plate is provided with a through hole, the corresponding part of the fixing seat body is provided with a through groove for matching, the upper part and the lower part of the fixing seat body are integrally and fixedly connected by non-magnetic fillers,

the middle part of the fixing seat body is vertically provided with two through holes in a transverse and longitudinal direction, the through holes comprise through holes matched with the push rod and through holes matched with the rotating shaft, the outer end face of the push rod is fixedly connected with an adsorption block made of a magnetic conductive material, the inner end face of the push rod is matched with a reset spring and used for supporting the push rod until the push rod is reset, the middle section of the push rod comprises an upper section of rack rod and a lower section of rack rod, teeth are arranged on the inner sides of the two rack rods, the teeth are matched with a toothed disc arranged on the periphery,

the two ends of the rotating shaft are fixedly connected with rotating permanent magnets, the peripheries of the rotating permanent magnets are in clearance fit with the inner wall of a cylindrical hole arranged in the fixing seat body, and the rotating permanent magnets comprise semicircular permanent magnets with outer leakage N poles, non-magnetic-conductive adhesives and semicircular permanent magnets with outer leakage S poles which are sequentially and tightly connected,

the two sides of the rear part of the fixing seat body are also provided with fixed permanent magnets, the N pole of each fixed permanent magnet faces downwards, the S pole of each fixed permanent magnet faces upwards, the N pole of each fixed permanent magnet is tightly attached to the lower part of the fixing seat body, the S pole of each fixed permanent magnet is tightly attached to the upper part of the fixing seat body,

the positioning lock rod comprises an adsorption plate, a positioning rod and a base, and the base is fixed on the fireproof door.

Furthermore, the rotating shaft is fixedly connected with the central shaft hole of the non-magnetic-conductive adhesive to drive the rotating permanent magnet to rotate.

Further, the tail of the return spring is matched with the back end plate top support.

Furthermore, the barb directions of teeth on the inner sides of the upper and lower sections of rack rods are opposite, and the elastic teeth on the periphery of the toothed disc matched with the teeth can be radially retracted similar to a flywheel structure and are ejected out and reset by an internally hidden spring.

Furthermore, the adsorption block slides in cooperation with the through groove, and the adsorption block drives the push rod to slide by a stroke of one quarter of the circumference of the toothed disc.

Furthermore, the adsorption block comprises an upper part and a lower part, and the middle of the adsorption block is filled with non-magnetic fillers.

Furthermore, the tail part of the push rod is also in threaded connection with a limit nut for controlling the stroke of the push rod.

The utility model has the advantages that:

the fire door permanent magnet releaser utilizes the adsorption effect between the permanent magnet and the magnetic material to adsorb the positioning lock rod, the permanent magnet comprises two parts of a fixed permanent magnet and a rotary permanent magnet, when the rotary permanent magnet rotates for 90 degrees for two times by pushing and pulling a rack arranged on the push rod, the N pole of the rotary permanent magnet is the same as the S pole of the fixed permanent magnet, so that the fixed permanent magnet and the rotary permanent magnet form a magnetic loop, the positioning lock rod is released, when the rotary permanent magnet is pushed and pulled by the rack arranged on the push rod to rotate for 90 degrees for two times, the N pole of the rotary permanent magnet is the same as the N pole of the fixed permanent magnet, so that the fixed permanent magnet and the rotary permanent magnet integrally form a whole permanent magnet, the whole permanent magnet and the positioning lock rod at the front end of the push rod form a magnetic loop, the positioning lock rod is tightly adsorbed, the structure is simple, the release after the stroke is finished once again, the manufacturing cost is low, the failure rate is low, and the device is simple and practical.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below.

FIG. 1 is a schematic view of a permanent magnet release for a fire door of the present embodiment;

FIG. 2 is a sectional view of the permanent magnet release of the fire door of the present embodiment;

FIG. 3 is a front view of the permanent magnet release of the fire door of the present embodiment;

FIG. 4 is a schematic view of the rack bar and toothed disc arrangement according to this embodiment;

wherein, 1-base, 2-adsorption plate, 3-adsorption block, 3 a-adsorption block upper part, 3 b-adsorption block lower part, 4-front end plate, 5-fixing base body, 6-rear end plate, 7-bottom plate, 8-semicircular permanent magnet with S pole leakage, 9-toothed disc, 9 a-elastic tooth, 10-fixed permanent magnet, 11-reset spring, 12-limit nut, 13-semicircular permanent magnet with N pole leakage, 14-through groove, 15-non-magnetic conductive filler in the middle of adsorption block, 16-positioning rod, 17-push rod, 17 a-upper rack rod tooth barb, 17 b-lower rack rod tooth barb, 18-non-magnetic conductive filler in the middle of fixing base body, 19-locking screw, 20-non-magnetic conductive adhesive, 21-rotation axis.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Referring to fig. 1-4, the present embodiment provides a fire door permanent magnet releaser, which includes a permanent magnet fixing seat and a positioning lock rod.

Specifically, the permanent magnet fixing seat is fixed on a wall and comprises a front end plate 4, a fixing seat body 5 and a rear end plate 6, wherein a through hole is formed in the middle of the front end plate 4, a through groove 14 formed in the corresponding position of the fixing seat body 5 is matched with the through groove, and the upper portion and the lower portion of the fixing seat body 5 are integrally and fixedly connected through a non-magnetic filler 18.

Two through holes are vertically penetrated in the middle of the fixed seat body 5 in the transverse and longitudinal directions and comprise a through hole matched with the push rod 17 and a through hole matched with the rotating shaft 21, the outer end face of the push rod 17 is fixedly connected with an adsorption block 3 made of magnetic conductive material, the inner end face is matched with a return spring 11, the tail part of the return spring 11 is matched with a back end plate 6, is used for propping up the push rod 17 until resetting, the middle section of the push rod 17 comprises an upper section of rack rod and a lower section of rack rod, the inner sides of the two rack rods are both provided with teeth, the teeth are matched with a tooth disc 9 arranged on the periphery of the rotating shaft 21 to drive the rotating shaft 21 to rotate, the rotary permanent magnet is fixedly connected to two ends of the rotary shaft 21, the periphery of the rotary permanent magnet is in clearance fit with the inner wall of a cylindrical hole formed in the fixed seat body 5, and the rotary permanent magnet comprises a semi-circular outer N-pole-leakage permanent magnet 13, a non-magnetic-conductive adhesive 20 and a semi-circular outer S-pole-leakage permanent magnet 8 which are sequentially and tightly fixedly connected.

The fixing seat body 5 rear portion both sides still are equipped with fixed permanent magnet 10, the N utmost point of fixed permanent magnet 10 is down, the S utmost point is up, and the N utmost point closely laminates with fixing seat body 5 lower part, and the S utmost point closely laminates with fixing seat body 5 upper portion.

The positioning lock rod comprises an adsorption plate 2, a positioning rod 16 and a base 1, wherein the base 1 is fixed on the fireproof door.

In a further embodiment, the rotating shaft 21 is fixedly connected with a central shaft hole of the non-magnetic-conductive adhesive 20 to drive the rotating permanent magnet to rotate.

In a further embodiment, the tooth barbs on the inner sides of the upper and lower rack bars are opposite, and the elastic teeth 9a on the periphery of the toothed disc 9 matched with the teeth can be radially retracted like a flywheel structure and are ejected and reset by an internally hidden spring (not shown in the figure).

In a further embodiment, the adsorption block 3 is matched with the through groove 14 to slide, and the adsorption block 3 drives the push rod 17 to slide by a stroke of one quarter of the circumference of the toothed disc 9.

In a further embodiment, the adsorption block 3 comprises an upper part and a lower part, and the middle part is filled with a non-magnetic filler 15.

In a further embodiment, the tail part of the push rod 17 is also screwed with a limit nut 12 for controlling the stroke of the push rod 17.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes, modifications, substitutions and alterations can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. The utility model provides a prevent fire door permanent magnetism releaser, includes permanent magnetism fixing base and locking lever, its characterized in that:

2. The fire door permanent magnet releaser of claim 1, characterized in that: the rotating shaft is fixedly connected with the central shaft hole of the non-magnetic-conductive adhesive and drives the rotating permanent magnet to rotate.

3. The fire door permanent magnet releaser of claim 1, characterized in that: the tail part of the reset spring is matched with the back end plate top support.

4. The fire door permanent magnet releaser of claim 1, characterized in that: the barb directions of the teeth on the inner sides of the upper and lower sections of rack rods are opposite, and the elastic teeth on the periphery of the toothed disc matched with the teeth can be radially retracted similar to a flywheel structure and are ejected and reset by an internally hidden spring.

5. The fire door permanent magnet releaser of claim 1, characterized in that: the adsorption block slides in cooperation with the through groove, and the adsorption block drives the push rod to slide by a stroke which is one fourth of the circumference of the toothed disc.

6. The fire door permanent magnet releaser of claim 5, characterized in that: the adsorption block comprises an upper part and a lower part, and non-magnetic-conductive fillers are filled in the middle of the adsorption block.

7. The fire door permanent magnet releaser of claim 1, characterized in that: and the tail part of the push rod is also in threaded connection with a limit nut to control the stroke of the push rod.