CN2435488Y

CN2435488Y - Door closer with folding arm

Info

Publication number: CN2435488Y
Application number: CN 00237854
Authority: CN
Inventors: 张文健
Original assignee: TONGXIAO INDUSTRIAL Co Ltd SHENZHEN CITY
Current assignee: TONGXIAO INDUSTRIAL Co Ltd SHENZHEN CITY
Priority date: 2000-07-31
Filing date: 2000-07-31
Publication date: 2001-06-20
Anticipated expiration: 2010-07-31

Abstract

The utility model relates to a door closer with a folding arm. The utility model comprises a door frame 1, a door 4, a folding arm 7, a hollow folding arm 3, a steel ball 33 in the hollow folding arm 3, a spring seat 34, a spring 35, and a spring seat 36. A positioning plate 71 and the folding arm 7 are fixed; the positioning plate 71 is provided with a recessed part 711; a pin shaft 92 on an electromagnet 9 is connected with the spring seat 34. Usually, the steel ball 33 can be embedded in the recessed part 711 and the door 4 can be controlled at one position to make the door not be closed. In danger, the action of the electromagnet 9 can drive the spring seat 34 to compress the spring 35 and release the steel ball 33, so that the door 4 can be closed quickly. Therefore, the utility model has stronger adaptability.

Description

The folding arm door closer

The utility model relates to fixed buildings door leaf shutoff device, particularly can stop the formula door closer.

The door closer of prior art is used to make door can cut out automatically after unlatching, uses comparatively general in specific occasions such as dustproof, fire prevention.But this door closer is in use also made troubles to operation, as under normal circumstances, has all brought certain influence for personnel's turnover, the aspects such as transportation of article.

The purpose of this utility model is to avoid above-mentioned the deficiencies in the prior art, and a kind of folding arm door closer that rests on after the unlatching on the certain position that under normal circumstances can make is provided.

The utility model is realized by the following technical solutions: a kind of folding arm door closer, comprise the folding arm seat that is connected on the doorframe, the rear end of it and hollow folding arm is hinged, also comprise the door controller that closes that is connected on the door, with the folding arm that the output shaft that closes door controller is connected, it is hinged by fastening bolt and hollow folding arm.Steel ball, spring base, spring and spring base are housed respectively in the hollow folding arm front end successively, and following spring base is fixed in the hollow folding arm, is set with a location-plate on fastening bolt, on one side it and folding arm is fixed and at it recess is arranged.When the normal condition Xiamen is opened to certain angle, steel ball is under the effect of spring, embed in the recess on the location-plate, and have certain pretightning force, at this moment, this pretightning force is worked energetically door closer and is acted on location-plate recess place active force, steel ball can be stuck in the recess securely, like this, door can make things convenient for personnel's the discrepancy and the transportation of goods like this with regard on the some positions that are controlled in opening and can not close.

Further describe the most preferred embodiment of the utility model below in conjunction with accompanying drawing.

Fig. 1 is that the utility model folding arm door closer master looks partial schematic sectional view.

Fig. 2 is that the utility model folding arm door closer is looked up partial schematic sectional view.

Fig. 3 is the cross-sectional schematic of looking up of location-plate described in Fig. 1 71.

Fig. 4 is the partial schematic sectional view of looking up of folding arm described in Fig. 17.

As can be seen from Figure 1, a kind of folding arm door closer, comprise the folding arm seat 2 that is connected on the doorframe 1, the rear end 31 of it and hollow folding arm 3 is hinged, comprise that also being connected door closes door controller 5 on 4, with the folding arm 7 that the output shaft 51 that closes door controller 5 is connected, it is hinged by fastening bolt 8 and hollow folding arm 3.In hollow folding arm 3 front ends 32 steel ball 33, spring base 34, spring 35 and spring base 36 are housed successively respectively, spring base 36 is fixed in the hollow folding arm 3, on fastening bolt 8, be set with a location-plate 71, on one side it and folding arm 7 are fixing and at it recess 711 is arranged.When normal condition Xiamen 4 is opened to certain angle, steel ball 33 is under the effect of spring 35, embed in the recess 711 on the location-plate 71, and has certain pretightning force, at this moment, this pretightning force acts on location-plate 71 recess 711 place's active forces greater than door closer, makes steel ball 33 can be stuck in the recess 711 securely, like this, door 4 is with regard on the some positions that are controlled in opening and can not close.

As can be seen from Figure 1, be fixed with an electromagnet 9 by the control of sense smoke sensor on the hollow folding arm 3, be fixed with bearing pin 92 on its drive link 91 front ends, the elongated hole 37 that it passes on the hollow folding arm 3 links together with spring base 34.When dangerous situation occurs, by feeling the signal that smoke sensor spreads out of, make electromagnet 9 inhale the iron core that is connected with drive link 91 down, bearing pin 92 on the drive link 91 drives spring base 34 compression springs 35, discharge steel ball 33, like this, the active force of door closer can overcome spring 35 and act on pretightning force on the steel ball 33, make steel ball 33 be pushed out recess 711, door 4 just can be closed rapidly.

Can find out that from Fig. 2 to Fig. 4 a face gear 712 concentric with fastening bolt 8 is arranged below the location-plate 71.Have above folding arm 7 one ends one 8 concentric with fastening bolt, with the face gear 72 of face gear 712 with modulus.Face gear 712 makes folding arm 7 and location-plate 71 be fixed into certain angle with face gear 72 engagements, comes control gate 4 to open and is fixed on certain angle.Unclamp fastening bolt 8, regulate above-mentioned two face gears to the different positions of engagement, fastening again fastening bolt 8 just makes door 4 obtain the different fixing angles of opening.

As can be seen from Figure 1, be fixed with a temperature inductor 6 on the hollow folding arm 3, the one end is fixed on the hollow folding arm 3 with screw 61, the elongated hole 38 that the screw 62 of the other end passes on the hollow folding arm 3 links together with spring base 36, is separately fixed between the brace 63 and 64 on screw 61 and 62 to be welding together with low melting material.When fire took place, high temperature made the low melting material fusing between brace 63 and 64, and brace 63 is thrown off with brace 64, and spring base 36 breaks away from control and to lower slider, reduces the pretightning force on the steel ball 33, makes folding arm 7 can drive door 4 and closes automatically.

The utlity model has and rest on the certain position after under normal circumstances can making a unlatching, the characteristics that the situation of facing a danger can be closed automatically, applicability is stronger.

Claims

1. folding arm door closer, comprise the folding arm seat (2) that is connected on the doorframe (1), rear end (31) dumpling of it and hollow folding arm (3) is connected together, comprise that also being connected door closes door controller (5) on (4), the folding arm (7) that is connected with the output shaft that closes door controller (5) (51), it is hinged by fastening bolt (8) and hollow folding arm (3), it is characterized in that: steel ball (33) is housed respectively in described hollow folding arm (3) front end (32) successively, spring base (34), spring (35) and spring base (36), spring base (36) is fixed in the hollow folding arm (3), be set with a location-plate (71) on fastening bolt (8), it and folding arm (7) are on one side fixing and at it recess (711) is arranged.

2. folding arm door closer according to claim 1, it is characterized in that: be fixed with a electromagnet (9) on the described hollow folding arm (3) by the control of sense smoke sensor, be fixed with bearing pin (92) on its drive link (91) front end, the elongated hole (37) that it passes on the hollow folding arm (3) links together with spring base (34).

3. folding arm door closer according to claim 1 is characterized in that: a face gear (712) concentric with fastening bolt (8) is arranged below the described location-plate (71).

4. folding arm door closer according to claim 1 is characterized in that: have above described folding arm (7) one ends one concentric with fastening bolt (8), with face gear (712) with the face gear (72) of modulus.

5. folding arm door closer according to claim 1, it is characterized in that: be fixed with a temperature inductor (6) on the described hollow folding arm (3), the one end is fixed on the hollow folding arm (3) with screw (61), elongated hole (38) and spring base (36) that the screw of the other end (62) passes on the hollow folding arm (3) link together, and are separately fixed between brace (63) on screw (61) and (62) and (64) to be welding together with low melting material.