CN86206328U - Vertical door shutting device especially suitable for fireproof door - Google Patents

Abstract

A main spring in a door shutting device enables a door to automatically close under the condition of no braking force. When the door is opened by an angle of 90 DEG, under the action of the press force of an auxiliary spring, a convex block of a positioning block slides into a concave opening of a support ring to enable the door to be positioned. Because a positioning cylindrical pin in a sleeve at the upper end of a main shaft is made of meltable materials, when a fire happens, the ambient temperature rises, the cylindrical pin melts, the auxiliary spring loses the press force, the torsion moment of force of the main spring enables the door to automatically shut, and a fire source is partitioned. Therefore, the installation of the utility model on the door can meet the requirement of various performances, and particularly can timely partition the fire source if the utility model is installed on a fireproof door. The utility model is safe and reliable, and has a small and compact structure.

Description

Vertical door shutting device especially suitable for fireproof door

The utility model relates to a kind of door engine, relates more specifically to a kind of door closer.

The present closing device that uses, the door that has spring hinge mechanism to make to push open is closed under the brakeless situation automatically, but can not open the door the location, also there is the mechanism of a kind of electronics or cam-type can make door open the location, but can not close automatically, more lack a kind of mechanism that the labeled door opened is closed automatically in the situation of catching fire, so directly have influence on the functional performance and the safety of door, especially important buildings such as modern hotel is for the special requirement of closing of door, and seeking the comprehensive and safe and reliable closing device of a kind of performance just becomes the task of top priority.

The utility model purpose is to seek a kind of door of pushing open of can making at the door closer of closing automatically under the brakeless situation, not only can make the door location of opening but also the labeled door opened is closed automatically.

The utility model is to realize like this, it comprises that a lower end is fixed in the main shaft of doorframe bottom and is enclosed within the housing of main shaft outside, the external part of housing is fixedlyed connected with the door bottom with screw by screw, main spring that tightens and the adjuster of regulating the main spring pretightning force are arranged in the housing, there is a support ring that is fixed on the housing upper end of housing, two recessed recesses are arranged on the support ring, also has a locating piece, there are two round pins to make locating piece slide up and down and can not rotate at main shaft, there are two protruding projections down the lower end of locating piece, locating piece is compressed by auxiliary spring, make two projections be close to the end face of support ring, a cover is arranged in the upper end of main shaft, and there is a straight pin to pass the middle part and the main shaft upper end of cover, cover is fixed with main shaft, had a packing ring to compress auxiliary spring below the cover, the profile of projection and recess can mate engagement.When opening the door, housing reverses an angle around main shaft synchronously with door, main spring is tightened, when door loses brake force, because the effect of main spring pretension torsional moment is closed door automatically,, be compressed the auxiliary spring effect this moment and the projection that is close on the support ring end face just in time slips in the recess of support ring if door is pushed open when turning over 90 °, be meshing with each other, then door is located automatically, no longer rotates, if will close the door again, then can promote door, overcome the component that compresses auxiliary spring with external force, make projection skid off recess, the main spring that tighten this moment produces torsional moment closes door, when as the door closer on the labeled door, making the fixing straight pin of cover and main shaft this moment is that fusible material is made, and has located 90 ° the time though door is unlocked, and raises when running into condition of a fire ambient temperature, can make straight pin fusing, then be enclosed within on the effect lower edge main shaft of auxiliary spring compressive force slidingly, auxiliary spring loses compressive force simultaneously, and the twisting resistance of main spring makes projection skid off the recess of support ring, door is closed automatically, cut off burning things which may cause a fire disaster.

The utility model has the advantages that to have simultaneously makes the door pushed open close, can make the door location of opening under the brakeless situation automatically and can make the labeled door of opening three kinds of functions such as close automatically under the situation of catching fire, make like this can adapt to multiple performance requirement, use especially on labeled door, can cut off timely burning things which may cause a fire disaster, safe and reliable, compact conformation is small and exquisite.

Marginal data:

Fig. 1: structure principle chart of the present utility model.

Fig. 2: partial sectional view of the present utility model.

Fig. 3: adjuster sectional view of the present utility model.

Be specific embodiment of the utility model below:

As Fig. 1, Fig. 2, shown in Figure 3, present embodiment comprises that a lower end is fixed in the main shaft of doorframe bottom ［ 1 ］ and is enclosed within the housing ［ 3 ］ of main shaft ［ 1 ］ outside, on housing ［ 3 ］ external part four screws ［ 16 ］ are arranged, be screwed bottom at door, be with main spring ［ 4 ］ that can tighten and the adjuster ［ 5 ］ of regulating the main spring pretightning force outside the main shaft ［ 1 ］ in housing ［ 3 ］, fixedly connected with main shaft ［ 1 ］ in the lower end of main spring ［ 4 ］, fixedly connected with adjuster ［ 5 ］ in the upper end, several adjustment holes ［ 17 ］ are arranged on the circumference of adjuster ［ 5 ］, can insert in the adjustment hole ［ 17 ］ and regulate pin ［ 14 ］, the position of going up corresponding adjustment hole ［ 17 ］ at housing ［ 3 ］ has one section arc groove hole, so that the pretightning force that makes adjuster ［ 5 ］ can regulate main spring ［ 1 ］ is regulated pin ［ 14 ］ with inserting, and be close to the housing location.Between the medial surface of the flange of main shaft ［ 1 ］ and housing ［ 3 ］, packing ring ［ 15 ］ is arranged, there are two flush end holding screws of a usefulness ［ 7 ］ to be fixed on housing ［ 3 ］ in the upper end of housing ［ 3 ］, on support ring ［ 6 ］, two recessed recesses ［ 19 ］ are arranged on the support ring ［ 6 ］, and support ring ［ 6 ］ is enclosed within the outside of main shaft ［ 1 ］.It above the support ring ［ 6 ］ locating piece ［ 8 ］, there are two protruding projections ［ 18 ］ lower end of locating piece ［ 8 ］, the profile of projection ［ 18 ］ and recess ［ 19 ］ is to mate engagement indention, circular arc, ball shape or other shapes mutually, the middle part of locating piece ［ 8 ］ embeds two round pins ［ 9 ］, one end of round pin ［ 9 ］ stretches into main shaft ［ 1 ］ and goes up in the microscler cotter way, locating piece ［ 8 ］ is compressed by auxiliary spring ［ 10 ］, makes two projections ［ 18 ］ be close to the end face of support ring ［ 6 ］.Locating piece ［ 8 ］ can endwisely slip along main shaft ［ 1 ］ but can not rotate around main shaft ［ 1 ］ if the thrust of auxiliary spring ［ 10 ］ disappears.In the upper end of main shaft ［ 1 ］ cover ［ 13 ］ is arranged, and there is a straight pin ［ 12 ］ to pass cover ［ 13 ］ middle part and main shaft ［ 1 ］ upper end, make cover ［ 13 ］ and main shaft ［ 1 ］ fixing, there is a packing ring ［ 11 ］ to compress auxiliary spring ［ 10 ］ below the cover ［ 13 ］, in the bottom of housing ［ 3 ］ single thrust bearing ［ 2 ］ is housed in addition, the another side of single thrust bearing ［ 2 ］ contacts with doorframe, and is more brisk when door and housing ［ 3 ］ are rotated.Present embodiment is the door closer that is used for labeled door, so straight pin ［ 12 ］ is to make with fusible material.

The working condition of present embodiment is as follows:

When opening the door, housing ［ 3 ］ reverses an angle around main shaft ［ 1 ］ synchronously with door, main spring ［ 4 ］ is tightened, when door loses brake force, because the effect of main spring ［ 4 ］ pretension torsional moment is closed door automatically, if door is pushed open when turning over 90 °, the projection ［ 18 ］ that is compressed the effect of auxiliary spring ［ 10 ］ this moment and is close on support ring ［ 6 ］ end face just in time slips in the recess ［ 19 ］ of support ring ［ 6 ］, be meshing with each other, then door is located automatically, no longer rotate, if will close the door again, then can promote door, overcome the component of compression auxiliary spring ［ 10 ］ with external force, just projection ［ 18 ］ skids off recess ［ 19 ］, the main spring ［ 4 ］ that tighten this moment produces torsional moment closes door, when door is opened 90 ° of location in a single day condition of a fire ambient temperature taking place raises, can make straight pin ［ 12 ］ fusing of making by fusible material, then cover ［ 13 ］ is gone up sliding at the effect lower edge main shaft ［ 1 ］ of auxiliary spring ［ 10 ］ compressive force, auxiliary spring ［ 10 ］ also loses compressive force simultaneously, the twisting resistance of main spring ［ 4 ］ makes projection ［ 18 ］ skid off the recess ［ 19 ］ of support ring ［ 6 ］, and door is closed automatically, has cut off burning things which may cause a fire disaster.Reliable and secure, as to have alleviated fire influence.

Then can be if will regulate the size of the pretension torsion of main spring ［ 4 ］ with subsidiary instrument as regulating the interior rotation regulator of adjustment hole ［ 17 ］ ［ 5 ］ that pin inserts adjuster ［ 5 ］, when being adjusted to the pretension torsion of required main spring ［ 4 ］, insert the adjusting pin ［ 14 ］ of adjustment hole ［ 17 ］ and be close to housing, carry out the location of adjuster ［ 5 ］.

Claims (6)

1, a kind of door engine, comprise that a lower end is fixed in the main shaft of doorframe bottom [1], be enclosed within the housing [3] of main shaft [1] outside and be in main shaft and housing between spring, housing is fixedlyed connected with the door end with screw by screw [16], it is characterized in that: there is a support ring [6] that is fixed together by flush end holding screw [7] and shell [3] upper end of shell [3], two recessed recesses [19] are arranged on the support ring, also has a locating piece [8], there are two protruding projections [18] down the lower end of locating piece [8], the middle part of locating piece [8] embeds two round pins [9], one end of round pin [9] stretches into main shaft [1] and goes up in the microscler cotter way, and locating piece [8] is compressed with support ring [6] by auxiliary spring [10] and is adjacent to.

2, door engine as claimed in claim 1, it is characterized in that: there is a cover ［ 13 ］ upper end of main shaft ［ 1 ］, and there is a straight pin ［ 12 ］ to pass cover ［ 13 ］ middle part and main shaft ［ 1 ］ upper end, make cover ［ 13 ］ and main shaft ［ 1 ］ fixing, have a packing ring ［ 11 ］ to compress auxiliary spring ［ 10 ］ below the cover ［ 13 ］.

3, door engine as claimed in claim 1 or 2, it is characterized in that: the main shaft ［ 1 ］ in the housing ［ 3 ］ is gone up outer being with and is regulated mouthful ［ 5 ］, also has main spring ［ 4 ］ on the main shaft in the housing ［ 3 ］, fixedly connected with main shaft ［ 1 ］ in the lower end of main spring ［ 4 ］, fixedly connected with adjuster ［ 5 ］ in the upper end, a plurality of adjustment holes ［ 17 ］ are arranged on the circumference of adjuster ［ 5 ］, can insert in the adjustment hole ［ 17 ］ and regulate pin ［ 14 ］, between the medial surface of the flange of main shaft ［ 1 ］ and housing ［ 3 ］, packing ring ［ 15 ］ be arranged.

4, door engine as claimed in claim 3 is characterized in that single thrust bearing ［ 2 ］ is equipped with in the bottom of housing ［ 3 ］, and another of single thrust bearing ［ 2 ］ is to contacting with the face frame.

5, as claim 1 or 2 or 4 described door engines, it is characterized in that projection ［ 18 ］ and with the recess ［ 19 ］ of its engagement be zigzag, circular arc, ball shape or other shapes.

6,, it is characterized in that straight pin ［ 12 ］ is that fusible material is made as claim 1 or 2 or 4 described door engines.

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