CN219864644U - Window closer and fire window - Google Patents

Abstract

The utility model is used in the field of door and window hardware connectors, and particularly relates to a window closer and a fireproof window, wherein the window closer comprises a pipe body, the pipe body is arranged on a window frame, and a limiting opening is formed in the pipe body; the first transmission part is assembled in the pipe body in a sliding way and comprises a sliding block and a rack, the rack is fixed on one side of the sliding block, and a limiting groove is formed in the sliding block; the transmission part is rotatably arranged on the pipe body and is meshed with the rack; the clamping piece is rotatably arranged on the sliding block and is provided with a limiting block; the heat induction element is arranged in the limit groove and abuts against the clamping piece; an elastic member compressed in the pipe body by the slider; a slider; and a rotating member. The heat induction element is heated to a certain degree and broken, the limiting block can withdraw from the limiting opening, the elastic component pushes the sliding block, the rotating piece drives the sliding piece to slide on the window sash under the meshing of the rack, the locking is realized through the limiting block and the limiting opening, the structure is simple, the cost is low, and the fireproof window comprises any window closer.

Description

Window closer and fire window

Technical Field

The utility model is used in the field of door and window hardware connectors, and particularly relates to a window closer and a fireproof window.

Background

The fire window is an important separation device for lighting and ventilation of a building and fire fighting of the building, the window closer is correspondingly arranged between a window frame and a window sash of the fire window and is used for realizing rotary opening and closing operation between the window and the window sash, when a fire disaster occurs, the window closer is used for automatically closing the window so as to prevent the spread of the fire disaster, meanwhile, the transmission of high temperature is reduced, the development of the fire disaster is effectively controlled, the fire disaster and personnel are relatively separated, precious time is striven for rescue, and the safety is improved.

The existing window closer is generally provided with a glass ball, namely a heat sensing element, when the external temperature reaches a certain degree, the glass ball is broken, so that the window closer is unlocked to realize automatic closing when fire window fires, a locking mechanism needs to be arranged around the glass ball in the existing common window closer to ensure that a window sash is in a normally open state, but the locking mechanism of the common window closer is locked usually through the ratchet mechanism, and therefore the whole structure of the window closer is complex, the occupied space is large, and the volume of the window closer is excessively large, so that the cost is high.

Disclosure of Invention

In order to solve at least one of the above technical problems, the present utility model provides a window closer and a fire window, and the adopted technical scheme is as follows.

A window closer comprising

The pipe body is used for being installed on the window frame and provided with a limiting opening;

the first transmission part is assembled in the pipe body in a sliding way and comprises a sliding block and a rack, the rack is arranged on one side of the sliding block and extends along the length direction of the pipe body, and a limiting groove is formed in the sliding block;

the transmission part is rotatably arranged on the pipe body and is meshed with the rack;

the clamping piece is rotatably arranged on the sliding block and is provided with a limiting block;

the heat induction element is arranged in the limiting groove and abuts against the clamping piece so that the limiting block is embedded into the limiting opening;

the elastic component is compressed in the pipe body through the sliding block, and the elastic component and the rack are respectively positioned at two sides of the sliding block;

a slider for sliding fitting over a window sash;

and one end of the rotating piece is fixedly connected with the transmission part, and the other end of the rotating piece is rotationally connected with the sliding piece.

The window closer provided by the embodiment of the utility model has at least the following beneficial effects: under the conventional state, the slider compresses elastic component inside the body, the stopper embedding has restricted the removal of slider in the spacing mouth simultaneously, thereby make the fire window be in the state of normally opening under the conventional state, when the conflagration breaks out, the heat-sensitive element will break after being heated to a certain extent, the heat-sensitive element after breaking can lose the holding power to the chucking spare, stopper on the chucking spare can withdraw from spacing mouthful, thereby release the holding power to the slider, the elastic component that receives the compression at this moment can promote the slider and slide in the body under the elastic force, the slider drives rack and drive the meshing of transmission part, the transmission part can rotate under the meshing of rack and drive the rotation piece, the rotation piece drives the slider and slides on the casement, finally make the casement close to the window frame on, realize the automatic window function when taking place the condition of a fire, this kind of window closer can realize locking through the stopper on the chucking spare and the spacing mouth mutually nested on the body, overall structure is simple, occupation space is little, the cost is also lower.

According to other embodiments of the present utility model, a locking mechanism is disposed between the slider and the rack, the locking mechanism includes a rack seat, a first movable plate, a second movable plate, a striking plate, and an adjusting bolt, the rack is connected to the rack seat, the first movable plate and the second movable plate are assembled on the rack seat, the first movable plate and the second movable plate are disposed opposite to each other on the rack seat, the striking plate is disposed between the first movable plate and the second movable plate, one end of the striking plate facing the slider extends from between the first movable plate and the second movable plate, the second movable plate is provided with a threaded channel, the adjusting bolt is in threaded connection with the threaded channel and abuts against the striking plate, and the adjusting bolt can drive the first movable plate and the second movable plate to approach each other or separate from each other on the rack seat, and a through hole for the adjusting bolt is disposed on the striking plate.

According to other embodiments of the present utility model, friction lines are provided on both the second movable plate and the first movable plate.

According to other embodiments of the present utility model, the impact plate is provided with alignment holes, the alignment holes are formed on two sides of the through hole, the second movable plate is provided with a first alignment rod embedded in the alignment holes, and the first movable plate is provided with a second alignment rod embedded in the alignment holes.

According to other embodiments of the present utility model, the transmission member includes a first gear rotatably mounted in the tube body and a second gear rotatably mounted at an end of the tube body, the first gear being engaged with the second gear, the first gear being engaged with the rack, the second gear being fixedly connected with the rotating member.

According to other embodiments of the present utility model, the clamping member is provided with a pulling block, the limiting groove is provided with a tightening block, the tightening block is slidably assembled in the limiting groove, and the heat sensing element tightens the tightening block on the pulling block of the clamping member, so that the limiting block is embedded into the limiting opening.

According to other embodiments of the present utility model, the abutting block includes a square block and a cylindrical block that abut against each other, the square block abuts against the heat sensing element, and a cylindrical surface of the cylindrical block abuts against the dial block.

According to other embodiments of the window closer, an avoidance port is formed in the side edge of the limiting groove, and the avoidance port is used for enabling the limiting block on the clamping piece to extend out and be embedded into the limiting port.

According to other embodiments of the present utility model, the inside of the tube body is provided with a fixing rod, and the elastic member is compressed between the fixing rod and the slider.

A fire window comprising a window closer as claimed in any one of the preceding claims.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic and partial enlarged view of one embodiment of the present utility model;

FIG. 2 is a schematic view of the embodiment of FIG. 1 with the tubular body removed and an enlarged view of a portion thereof;

FIG. 3 is a schematic view of the first transmission member and fastener of the embodiment of FIG. 1;

FIG. 4 is a schematic diagram of a second gear in the embodiment of FIG. 1;

FIG. 5 is a schematic view of another embodiment of the present utility model with the tube removed and an enlarged view of a portion of the structure;

FIG. 6 is one of the schematic structural views of the first transmission member and the fastener of the embodiment of FIG. 5;

FIG. 7 is a second schematic illustration of the first transmission member and the fastener of the embodiment of FIG. 5;

FIG. 8 is a third schematic view of the first transmission member and the fastener of the embodiment of FIG. 5;

FIG. 9 is a schematic view of the first transmission member and the fastener in another embodiment of the present utility model;

FIG. 10 is a schematic view and a partial enlarged view of another embodiment of the present utility model;

FIG. 11 is a schematic view of another embodiment of the present utility model with the tube removed and a partially enlarged view of the structure;

fig. 12 is a schematic structural view of the second gear.

Detailed Description

The conception and the technical effects produced by the present utility model will be clearly and completely described in conjunction with the embodiments below to fully understand the objects, features and effects of the present utility model. It is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments, and that other embodiments obtained by those skilled in the art without inventive effort are within the scope of the present utility model based on the embodiments of the present utility model.

In the description of the embodiments of the present utility model, if an orientation description such as "upper", "lower", "front", "rear", "left", "right", etc. is referred to, it is merely for convenience of description and simplification of the description, and it is not indicated or implied that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the embodiments of the present utility model, if a feature is referred to as being "disposed", "fixed", "connected" or "mounted" on another feature, it can be directly disposed, fixed or connected to the other feature or be indirectly disposed, fixed or connected or mounted on the other feature. In the description of the embodiments of the present utility model, if "several" is referred to, it means more than one, if "multiple" is referred to, it is understood that the number is not included if "greater than", "less than", "exceeding", and it is understood that the number is included if "above", "below", "within" is referred to. If reference is made to "first", "second" it is to be understood as being used for distinguishing technical features and not as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

The fire window is an important separation device for lighting and ventilation of a building and fire fighting of the building, the window closer is correspondingly arranged between a window frame and a window sash of the fire window and is used for realizing rotary opening and closing operation between the window and the window sash, when a fire disaster occurs, the window closer is used for automatically closing the window so as to prevent the spread of the fire disaster, meanwhile, the transmission of high temperature is reduced, the development of the fire disaster is effectively controlled, the fire disaster and personnel are relatively separated, precious time is striven for rescue, and the safety is improved.

The existing window closer is generally provided with a glass ball, namely a heat sensing element, when the external temperature reaches a certain degree, the glass ball is broken, so that the window closer is unlocked to realize automatic closing when fire window fires, a locking mechanism needs to be arranged around the glass ball in the existing common window closer to ensure that a window sash is in a normally open state, but the locking mechanism of the common window closer is locked usually through the ratchet mechanism, and therefore the whole structure of the window closer is complex, the occupied space is large, and the volume of the window closer is excessively large, so that the cost is high.

Referring to fig. 1 and 2, the present utility model provides a window closer, which comprises a tube 010, a sliding block 021, a clamping member 040, a heat sensing element 050, a transmission member 030, an elastic member 060, a sliding member 070 and a rotating member 080, wherein the tube 010 is used for being installed on a window frame, the tube 010 is provided with a limit opening 011, the sliding block 021 is slidingly assembled in the tube 010, a rack 022 is arranged at one side of the sliding block 021, the rack 022 extends along the length direction of the tube 010, the clamping member 040 is rotatably installed on the sliding block 021, a limit block 041 is arranged on the clamping member 040, the heat sensing element 050 is installed in a limit groove 121, the heat sensing element 050 is abutted against the clamping member 040, so that the limit block 041 is embedded in the limit opening 011, the transmission member 030 is rotatably installed on the tube 010, the elastic member 030 and the rack 022 are mutually meshed, the elastic member 060 is compressed in the tube 010 through the sliding block 021, the elastic member 060 is used for exerting acting force towards the transmission member 030, the sliding member 080 is rotatably assembled on the sliding block 021, and the sliding member 080 is used for being rotatably connected with one end of a rotating member 070, which is fixedly connected with one end of the rotating member 070.

Under the conventional state, the slider 021 compresses the elastic component 060 in the pipe body 010, meanwhile, the limiting block 041 is embedded in the limiting opening 011 to limit the movement of the slider 021, so that the fireproof window is in a normally open state under the conventional state, when a fire disaster occurs, the heat sensing element 050 is broken after being heated to a certain degree, the broken heat sensing element 050 can lose the supporting force on the clamping piece 040, the limiting block 041 on the clamping piece 040 can withdraw from the limiting opening 011, so that the restraining force on the slider 021 is relieved, the compressed elastic component 060 can push the slider 021 to slide in the pipe body 010 under the action of the rebound force, the slider 021 drives the rack 022 to be meshed with the transmission component 030, the transmission component 030 can rotate under the meshing of the rack 022 to drive the rotation piece 080, the rotation piece 080 drives the sliding piece 070 to slide on the window sash, finally, the automatic window closing function in the case of fire disaster is realized, and the window closing device can realize the whole locking 011 through the limiting opening on the clamping piece 040.

The heat sensing element 050 is of a hollow columnar structure, and expansion liquid is arranged inside the heat sensing element 050, so that when the temperature of a fire disaster rises, the expansion liquid in the heat sensing element 050 expands and breaks the heat sensing element 050.

In some embodiments, a fixed rod 013 is provided inside the tube 010, and the elastic member 060 is compressed between the fixed rod 013 and the slider 021.

Specifically, the pipe body 010 is rectangular tubular structure, and dead lever 013 is installed to the inside one end of pipe body 010, and transmission part 030 is installed in the other end rotation of pipe body 010, and slider 021 sliding fit is in pipe body 010, and rack 022 transversely fixes in one side of slider 021, and elastic component 060 compresses between the opposite side of slider 021 and dead lever 013.

Referring to fig. 3 to 8, in some other embodiments, a locking mechanism 023 is provided between the slider 021 and the rack 022, the locking mechanism 023 includes a rack seat 024, a first movable plate 025, a second movable plate 026, a striking plate 027, and an adjusting bolt 028, the rack 022 is connected to the rack seat 024, the first movable plate 025 and the second movable plate 026 are both assembled on the rack seat 024, the first movable plate 025 and the second movable plate 026 are oppositely arranged on the rack seat 024, the striking plate 027 is provided between the first movable plate 025 and the second movable plate 026, the striking plate 027 extends from between the first movable plate 025 and the second movable plate 026 toward one end of the slider 021, a threaded passage 0261 is provided on the second movable plate 026, the adjusting bolt 028 is screwed in the threaded passage 0261 and is abutted against the striking plate 027, the adjusting bolt 028 can drive the first movable plate 025 and the second movable plate 026 to approach each other or separate from each other on the rack seat 024, and the adjusting bolt 0271 is provided on the striking plate 028.

The upper side of rack seat 024 is equipped with first assembly recess, and the downside of rack seat 024 is equipped with the second assembly recess, and first fly leaf 025 assembles in the second assembly recess and can go up and down the activity in the second assembly recess, and second fly leaf 026 movable assembly is in the first assembly recess and can go up and down the activity in the first assembly recess.

In some embodiments, the tube 010 is provided with an adjusting hole 014, and the adjusting hole 014 corresponds to the threaded channel 0261 of the second movable plate 026.

In the initial state, the striking plate 027 is horizontally clamped between the first movable plate 025 and the second movable plate 026, the adjusting bolt 028 is screwed into the adjusting hole 014 by the screwdriver, the adjusting bolt 028 is screwed into the threaded channel 0261 of the second movable plate 026, the end of the adjusting bolt 028 is abutted against the striking plate 027, so that the adjusting bolt 028 drives the second movable plate 026 and the first movable plate 025 to be separated in opposite directions along with the rotation of the adjusting bolt 028, the top surface of the second movable plate 026 is abutted against the inner wall surface of the pipe 010, the bottom surface of the first movable plate 025 is abutted against the inner wall surface of the pipe 010 under the action of friction resistance of the second movable plate 026 and the first movable plate 025, the locking mechanism 023 is locked inside the pipe 010, the transmission between the rack 022 and the transmission part 030 is limited, when a fire-proof door window is in the locking state, the heat sensing element 050 is crushed after being heated to a certain degree, the crushed heat sensing element 050 loses the supporting force to the clamping piece 040, the limiting block 041 on the clamping piece 040 can withdraw from the limiting opening 011, so that the restraining force to the sliding block 021 is relieved, the compressed elastic component 060 can push the sliding block 021 to slide in the pipe 010 under the action of rebound force, the sliding block 021 can collide with the striking plate 027 after moving, the striking plate 027 is collided between the first movable plate 025 and the second movable plate 026, finally, the adjusting bolt 028 abutted against the striking plate 027 is sunk into the through hole 0271, at the moment, the second movable plate 026 and the first movable plate 025 are mutually close after losing the supporting of the adjusting bolt 028, the second movable plate 026 is separated from the inner wall surface of the pipe 010, the first movable plate 025 is separated from the inner wall surface of the pipe 010, at the moment, the locking mechanism 023 and the inner wall surface of the pipe 010 lose friction resistance, along with the pushing of the sliding block 021, the locking mechanism 023 can realize the window closing through the transmission between the rack 022 and the transmission part 030, so that the locking performance of the fireproof door and window is better, and the fireproof door and window is more stable under the normally open state.

In some embodiments, friction lines are provided on both the second moveable plate 026 and the first moveable plate 025. So as to increase the friction between the locking mechanism 023 and the inner wall surface of the pipe 010 and improve the locking effect.

In some embodiments, the striking plate 027 is provided with alignment holes 0272, the alignment holes 0272 are provided on both sides of the through hole 0271, the second movable plate 026 is provided with first alignment rods 0262 embedded in the alignment holes 0272, and the first movable plate 025 is provided with second alignment rods 0251 embedded in the alignment holes 0272.

Specifically, the alignment holes 0272 are bar-shaped holes formed on both sides of the through hole 0271, when the striking plate 027 is clamped between the second movable plate 026 and the first movable plate 025, the first alignment rod 0262 on the second movable plate 026 is embedded in the alignment holes 0272, and the second alignment rod 0251 on the first movable plate 025 is embedded in the alignment holes 0272, so that the striking plate 027 can be conveniently and accurately mounted between the second movable plate 026 and the first movable plate 025, the first alignment rod 0262 and the second alignment rod 0251 are thin rods and have lower hardness, and when the sliding block 021 strikes the striking plate 027 of the locking mechanism 023, the striking plate 027 can strike the first alignment rod 0262 and the second alignment rod 0251, so that the first alignment rod 0262 and the second alignment rod 0251 cannot interfere with the movement of the second movable plate 026 and the first movable plate 025.

In some embodiments, the transmission part 030 includes a first gear 130 and a second gear 230, the first gear 130 is rotatably mounted in the tube 010, the second gear 230 is rotatably mounted at an end of the tube 010, the first gear 130 is engaged with the second gear 230, the first gear 130 is engaged with the rack 022, and the second gear 230 is fixedly connected with the rotating member 080.

Specifically, the rotation shaft of the second gear 230 is fixedly connected with the rotating member 080, when the elastic member 060 pushes the sliding block 021 to slide, the rack 022 is meshed with the first gear 130, so that the first gear 130 and the second gear 230 are meshed for transmission, and the second gear 230 drives the rotating member 080 to rotate under the driving of the first gear 130.

Referring to fig. 9, in some embodiments, a mounting hole 012 is formed in the tube body 010, and rotation shafts 131 at both ends of the first gear 130 are fitted in the mounting hole 012.

Wherein the mounting hole 012 may be provided in a bar-shaped hole structure such that the first gear 130 can be movably adjusted within a stroke range of the mounting hole 012, so that the locking or tooth collision between the rack 022 and the first gear 130 can be prevented.

Of course, the mounting hole 012 may be provided as a circular hole.

In other embodiments, the transmission member 030 may be a single gear that meshes with the rack 022, with the rotational shaft of the gear being fixedly connected to the rotational member 080.

Referring to fig. 10-12, to limit the rotational travel of the rotational member 080, in some embodiments, the second gear 230 is flanked by a limit boss 231, and the limit boss 231 is used to limit the rotational member 080.

Specifically, the side of the second gear 230 is provided with a limit boss 231 higher than the arc structure of the end face of the second gear 230, the limit boss 231 is located at the outer side of the pipe 010, and when the window is opened, after the rotating member 080 rotates to the position of the limit boss 231, the limit boss 231 can prevent the rotating member 080 from further rotating.

In some embodiments, the clamping member 040 is rotatably connected to the limiting groove 121 by a rotation shaft structure.

Specifically, referring to the embodiment shown in fig. 10 to 12, the limiting groove 121 is formed on the slider 021, both long sides of the limiting groove 121 are all set to be open structures, the groove bottom of the limiting groove 121 is provided with a first rotating shaft hole 221 penetrating through the whole slider 021, one end of the clamping piece 040 is provided with a first rotating shaft 042, the first rotating shaft 042 is rotationally assembled in the first rotating shaft hole 221, the other end of the clamping piece 040 is set to be arc-shaped, one end of the clamping piece 040 is provided with an arc-shaped structure and one end of the limiting groove 121 are mutually matched, the groove bottom of the limiting groove 121 is also provided with a clamping groove 321 for installing a heat sensing element 050, a step-shaped height difference is formed between the groove bottom of the clamping groove 321 and the groove bottom of the limiting groove 121, the heat sensing element 050 is assembled in the clamping groove 321 and is abutted against the clamping piece 040, one side of the clamping piece 040 far away from the heat sensing element 050 is provided with an outwardly protruding limiting block 041, and when the heat sensing element 050 is abutted against the clamping piece 040, the clamping piece 040 is rotationally embedded into a limiting opening of a limiting body 010, and the limiting opening of the limiting groove 041 is formed through the limiting groove 011.

Referring to the embodiment shown in fig. 1 to 8, the clamping member 040 is provided with a shifting block 043, the limiting groove 121 is provided with a tightening block 621, the tightening block 621 is slidably assembled in the limiting groove 121, and the heat sensing element 050 abuts the tightening block 621 against the shifting block 043 of the clamping member 040, so that the limiting block 041 is embedded into the limiting opening 011.

Specifically, be equipped with bar spacing groove 121 on the slider 021, the one end of spacing groove 121 is equipped with second pivot 122, be equipped with second pivot hole 044 on the chucking piece 040, the second pivot hole 044 of chucking piece 040 and the second pivot 122 normal running fit in the spacing groove 121, all be equipped with on the both sides cell wall of spacing groove 121 one end and dodge mouthful 123, this dodge mouthful 123 is located the both sides of chucking piece 040, stopper 041 on the chucking piece 040 can follow one side dodge mouthful 123 in rotatory coming out, the shifting block 043 on the chucking piece 040 stretches into in spacing groove 121, prop up tight piece 621 and include square 421 and the cylinder piece 521 that prop up each other, square 421 is with the heat-sensitive element 050 tightly in spacing groove 121, the face of cylinder piece 521 is contradicted each other with the side of shifting block 043, after the heat-sensitive element 050 is heated and is broken, prop up tight piece 621 and can lose the holding power, thereby make stopper 041 on the chucking piece 040 withdraw from spacing mouthful 011, then promote slider 021 under the effect of elastic component 060 chucking.

In order to facilitate the stopper 041 on the clamping member 040 to retract from the limiting opening 011, in some implementations, a side of the stopper 041 facing away from the rotating member 080 is of an arc structure, so that the arc structure on the stopper 041 can form transition between the limiting openings 011 in the rotating process, and the stopper 041 is prevented from being blocked at the limiting opening 011.

The utility model also provides a fireproof window, which comprises any window closer.

The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model. Furthermore, embodiments of the utility model and features of the embodiments may be combined with each other without conflict.

The utility model is used in the field of door and window hardware connectors, and particularly relates to a window closer and a fireproof window, wherein the window closer comprises a pipe body, the pipe body is arranged on a window frame, and a limiting opening is formed in the pipe body; the first transmission part is assembled in the pipe body in a sliding way and comprises a sliding block and a rack, the rack is fixed on one side of the sliding block, and a limiting groove is formed in the sliding block; the transmission part is rotatably arranged on the pipe body and is meshed with the rack; the clamping piece is rotatably arranged on the sliding block and is provided with a limiting block; the heat induction element is arranged in the limit groove and abuts against the clamping piece; an elastic member compressed in the pipe body by the slider; a slider; and a rotating member. The heat induction element is heated to a certain degree and broken, the limiting block can withdraw from the limiting opening, the elastic component pushes the sliding block, the rotating piece drives the sliding piece to slide on the window sash under the meshing of the rack, the locking is realized through the limiting block and the limiting opening, the structure is simple, the cost is low, and the fireproof window comprises any window closer.

Claims (10)

1. A window closer, characterized by: comprising

The pipe body (010), the pipe body (010) is used for being installed on a window frame, and a limit opening (011) is formed in the pipe body (010);

the sliding block (021) is slidably assembled in the pipe body (010), a rack (022) is arranged on one side of the sliding block (021), the rack (022) extends along the length direction of the pipe body (010), and a limiting groove (121) is formed in the sliding block (021);

the clamping piece (040) is rotatably arranged on the sliding block (021), and a limiting block (041) is arranged on the clamping piece (040);

a heat sensing element (050), wherein the heat sensing element (050) is installed in the limit groove (121), and the heat sensing element (050) abuts against the clamping piece (040) so that the limit block (041) is embedded into the limit opening (011);

a transmission member (030), the transmission member (030) being rotatably mounted on the tubular body (010), the transmission member (030) being intermeshed with the rack (022);

-an elastic member (060), said elastic member (060) being compressed in said tubular body (010) by said slider (021), said elastic member (060) being adapted to exert a force on said slider (021) towards said transmission member (030);

a slider (070) for sliding fitting over a window sash;

and one end of the rotating piece (080) is fixedly connected with the transmission part (030), and the other end of the rotating piece (080) is rotationally connected with the sliding piece (070).

2. A window closer according to claim 1, wherein: the sliding block (021) and the rack (022) are provided with a locking mechanism (023), the locking mechanism (023) comprises a rack seat (024), a first movable plate (025), a second movable plate (026), a striking plate (027) and an adjusting bolt (028), the rack (022) is connected with the rack seat (024), the first movable plate (025) and the second movable plate (026) are assembled on the rack seat (024), the first movable plate (025) and the second movable plate (026) are relatively arranged on the rack seat (024), the striking plate (027) is arranged between the first movable plate (025) and the second movable plate (026), one end of the striking plate (027) faces the sliding block (021) and extends out from between the first movable plate (025) and the second movable plate (026), the second movable plate (026) is provided with a channel (0261) and the second movable plate (026) is tightly connected with the adjusting bolt (028) in a threaded manner, the first movable plate (025) and the second movable plate (028) can be tightly driven by the adjusting bolt (028) to move away from the first movable plate (028), the striking plate (027) is provided with a through hole (0271) for the adjusting bolt (028) to sink into.

3. A window closer according to claim 2, wherein: friction lines are arranged on the second movable plate (026) and the first movable plate (025).

4. A window closer according to claim 2, wherein: the impact plate (027) is provided with an alignment hole (0272), the alignment hole (0272) is arranged on two sides of the through hole (0271), the second movable plate (026) is provided with a first alignment rod (0262) embedded in the alignment hole (0272), and the first movable plate (025) is provided with a second alignment rod (0251) embedded in the alignment hole (0272).

5. A window closer according to claim 1, wherein: the transmission part (030) comprises a first gear (130) and a second gear (230), the first gear (130) is rotatably arranged in the pipe body (010), the second gear (230) is rotatably arranged at the end part of the pipe body (010), the first gear (130) is meshed with the second gear (230), the first gear (130) is meshed with the rack (022), and the second gear (230) is fixedly connected with the rotating piece (080).

6. A window closer according to claim 1, wherein: be equipped with plectrum (043) on chucking spare (040), be equipped with in spacing groove (121) and support tight piece (621), support tight piece (621) sliding fit in spacing groove (121), thermal-sensing element (050) will support tight piece (621) support tightly on plectrum (043) of chucking spare (040), so that stopper (041) embedding spacing mouth (011).

7. A window closer according to claim 6, wherein: the abutting block (621) comprises a square block (421) and a cylindrical block (521) which are abutted against each other, the square block (421) abuts against the heat sensing element (050), and the cylindrical surface of the cylindrical block (521) abuts against the shifting block (043).

8. A window closer according to claim 1, wherein: the side of spacing groove (121) is equipped with dodges mouth (123), dodge mouthful (123) be used for stopper (041) on fastener (040) stretch out and imbed in spacing mouth (011).

9. A window closer according to claim 1, wherein: a fixed rod (013) is arranged in the pipe body (010), and the elastic component (060) is compressed between the fixed rod (013) and the sliding block (021).

10. A fire window, characterized in that: comprising a window closer according to any of claims 1 to 9.