Door closer without hydraulic structure

Abstract

The invention discloses a door closer without a hydraulic structure. A sliding groove is formed in a shell, and a sliding block is arranged in the sliding groove and can slide along the sliding groove; one end of the tension spring is fixedly connected to one end of the shell, and the other end is fixedly connected to the slider; the clamping mechanism is arranged at the other end of the shell, and the fulcrum of the warping plate is rotatably connected to the shell of the clamping mechanism through a rotating shaft; the clamping part is arranged at one end of the warping plate, one end of an armature of the electromagnet is connected to one end of the buckle, a clamping column is arranged at the other end of the warping plate, and when the electromagnet is in a power-off state, the armature extends outwards, and the buckle is detachably buckled with the clamping column; a bayonet matched with the clamping part is formed in the sliding block; the release spring is connected to the clamping mechanism shell and the warping plate; and when the buckle is buckled with the clamping column, the release spring is compressed by the other end of the warping plate, and the bayonet can reach the position of the clamping part along with the sliding of the sliding block and is clamped with the clamping part. Door opening positioning and automatic closing of the sliding groove type normally-opened door closer can be achieved.

Description

Technical Field

[0001] The invention relates to the technical field of door closers, and in particular to a door closer without a hydraulic structure. Background Art

[0002] The sliding groove type normally open door closer realizes the linkage between the door leaf and the door closer through the sliding groove slider structure and the connecting rod. The existing sliding groove type normally open door closer usually only has a simple door opening magnetic suction positioning function, but no automatic door closing function, so it is impossible to realize automatic door closing in an emergency. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention aims to provide a door closer without a hydraulic structure.

[0004] In order to achieve the above object, the present invention adopts the following technical solution:

[0005] A door closer without a hydraulic structure, comprising a housing, a slider, a tension spring and a clamping mechanism;

[0006] A sliding groove is provided in the housing, and the slider is provided in the sliding groove and can slide along the sliding groove; one end of the tension spring is fixedly connected to one end of the housing, and the other end is fixedly connected to the slider;

[0007] The clamping mechanism is arranged at the other end of the shell, and includes a clamping mechanism shell, a clamping part, a release spring, an electromagnet, a seesaw and a buckle; the buckle, the seesaw, the electromagnet and the release spring are all arranged on the clamping mechanism shell, and the fulcrum of the seesaw is rotatably connected to the clamping mechanism shell through a rotating shaft; the clamping part is arranged at one end of the seesaw, one end of the armature of the electromagnet is connected to one end of the buckle, and the other end of the seesaw is provided with a clamping column, and when the electromagnet is in a power-off state, the armature extends outward and the buckle and the clamping column are detachably buckled; a bayonet matching the clamping part is provided on the slider; one end of the release spring is connected to the clamping mechanism shell, and the other end of the release spring is connected to the other end of the seesaw; when the buckle and the clamping column are buckled, the release spring is compressed by the other end of the seesaw, and the bayonet can reach the position of the clamping part with the sliding of the slider and be buckled with the clamping part.

[0008] Furthermore, the locking portion is arranged at the top of one end of the seesaw, the snap-in is arranged at the bottom of the slider and faces downward, the other end of the release spring is connected to the bottom of the other end of the seesaw and when the snap and the clamping column are engaged, the release spring is compressed downward by the other end of the seesaw.

[0009] Furthermore, the engaging portion includes a bayonet pin, a rotating shaft, a rotating seat and a compression spring, the bayonet pin is fixed to one end of the rotating seat close to the slider, and the end of the rotating seat away from the slider is rotatably connected to the seesaw through a rotating shaft; one end of the compression spring abuts against the seesaw, and the other end abuts against the bayonet pin; when the compression spring is in an uncompressed state, the top surface position of the bayonet pin is higher than the bottom surface position of the bayonet.

[0010] Furthermore, the buckle is buckled with the clamping column through a clamping slot, and the buckle is rotatably connected to the clamping mechanism housing through a rotating shaft, and the connection point between the buckle and the rotating shaft is located below the clamping slot.

[0011] Furthermore, a reset button is provided at the other end of the seesaw, and when the reset button is pressed, the release spring is compressed.

[0012] The beneficial effects of the present invention are as follows: the present invention can realize the door opening positioning and automatic closing of the sliding slot type normally open door closer, and on the basis of realizing reliable door opening positioning of the fire door, it can be automatically released in case of emergency such as fire, so that the fire door is automatically closed. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is an overall schematic diagram of a door closer in an embodiment of the present invention;

[0014] Figure 2 Schematic diagram of the top view of the clamping mechanism in an embodiment of the present invention;

[0015] Figure 3 It is a schematic diagram of the structure of the clamping mechanism from the top perspective in an embodiment of the present invention (the clamping mechanism housing is omitted);

[0016] Figure 4 It is a structural schematic diagram of the clamping mechanism from the bottom perspective in an embodiment of the present invention (the clamping mechanism housing is omitted);

[0017] Figure 5 It is a structural schematic diagram of a slider in an embodiment of the present invention;

[0018] Figure 6 Schematic diagram of the structure of the buckle in the embodiment of the present invention. DETAILED DESCRIPTION

[0019] The present invention will be further described below in conjunction with the accompanying drawings. It should be noted that this embodiment is based on the technical solution and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to this embodiment.

[0020] This embodiment provides a door closer without a hydraulic structure, such as Figure 1As shown in Figure 6, it includes a housing 1, a slider 2, a tension spring 3 and a clamping mechanism 4;

[0021] The housing 1 is provided with a sliding groove 5, and the slider 2 is provided in the sliding groove 5 and can slide along the sliding groove 5; one end of the tension spring 3 is fixedly connected to one end of the housing 1, and the other end is fixedly connected to the slider 2;

[0022] The clamping mechanism 4 is arranged at the other end of the housing 1, and includes a clamping mechanism housing 6, a clamping portion 7, a release spring 8, an electromagnet 9, a seesaw 10 and a buckle 11; the buckle 11, the seesaw 10, the electromagnet 9 and the release spring 8 are all arranged on the clamping mechanism housing 6, and the fulcrum of the seesaw 10 is rotatably connected to the clamping mechanism housing 6 through a rotating shaft 12; the clamping portion 7 is arranged at one end of the seesaw 10, one end of the armature 13 of the electromagnet 9 is connected to one end of the buckle 11, and the other end of the seesaw 10 is provided with a clamping column 14 When the electromagnet 9 is in a de-energized state, the armature 13 extends outward and the buckle 11 and the clamping column 14 are detachably engaged; a bayonet 15 matching the engaging portion is provided on the slider 2; one end of the release spring 8 is connected to the clamping mechanism housing 6, and the other end is connected to the other end of the rocker 10; when the buckle 11 and the clamping column 14 are engaged, the release spring 8 is compressed by the other end of the rocker 10, and the bayonet 15 can reach the position of the engaging portion 7 as the slider 2 slides and is engaged with the engaging portion 7.

[0023] In this embodiment, the locking portion 7 is arranged at the top of one end of the rocker 10, the snap-in 15 is arranged at the bottom of the slider 2 and faces downward, the other end of the release spring 8 is connected to the bottom of the other end of the rocker 10 and when the buckle 11 and the clamping column 14 are buckled, the release spring 8 is compressed downward by the other end of the rocker 10.

[0024] More specifically, in this embodiment, the engaging portion 7 includes a bayonet 16, a rotating shaft 17, a rotating seat 18 and a compression spring 19, the bayonet 16 is fixed to one end of the rotating seat 17 close to the slider 2, and the end of the rotating seat 18 away from the slider 2 is rotatably connected to the seesaw 10 through the rotating shaft 17; one end of the compression spring 19 is against the seesaw 10, and the other end is against the bayonet 16; when the compression spring 19 is in an uncompressed state, the top surface position of the bayonet 16 is higher than the bottom surface position of the bayonet 15.

[0025] Specifically, in this embodiment, the buckle 11 is buckled with the clamping column 14 through the clamping slot 21, and the buckle 11 is rotatably connected to the clamping mechanism housing 6 through the rotating shaft 20, and the connection point 22 between the buckle 11 and the rotating shaft 20 is located below the clamping slot 21.

[0026] In this embodiment, a reset button 23 is provided at the other end of the rocker 10, and when the reset button 23 is pressed, the release spring 8 is compressed. Thus, when the release spring 8 is in a released state, the release spring 8 can be manually pressed to be in a compressed state, so that the buckle and the clamping column are reconnected.

[0027] The working principle of the above door closer is:

[0028] During installation, the door closer and the fire door are connected via a connecting rod 100 , one end of the connecting rod 100 is connected to the door leaf of the fire door via a bracket, and the other end is connected to the slider 2 .

[0029] When the fire door is opened manually, the connecting rod 100 installed on the door leaf drives the slider 2 on the door closer to move along the slide groove 5 toward the clamping mechanism 4, and the tension spring 3 is stretched. When the slider 2 moves to the clamping part 4 of the clamping mechanism, the bottom edge of the bayonet of the slider 2 will exert a downward force on the bayonet pin 16, thereby compressing the compression spring 19. When the slider 2 continues to slide until the bayonet 15 and the bayonet pin 16 are aligned, the downward force on the bayonet pin 16 disappears, the compression spring 19 returns to its original state, and the bayonet pin 16 is fixedly engaged with the bayonet 15, thereby realizing the door opening positioning function.

[0030] When the door closer receives a release signal, the control circuit board starts the electromagnet 9. The adsorption force generated by the electromagnet after being energized drives the armature 13 to retract, driving the slot 21 of the buckle 11 to move away from the card column 14. When the buckle is disengaged, the movement restriction of the rocker 10 is cancelled. Under the action of the elastic potential energy of the release spring to restore its original state, the other end of the rocker 10 will swing upward and one end of the rocker 10 will swing downward, so that the pin 16 will be disengaged from the slot 15 of the slider 2. The slider will move back quickly under the action of the elastic potential energy of the tension spring to restore its original state, and the door leaf of the fire door will also be automatically closed under the drive of the connecting rod 100.

[0031] When the fire door is in the open state and needs to be closed manually, the buckle can be moved to manually separate the buckle from the clamping column to close the door leaf. When the release spring is in the released state (the door leaf is in the closed state at this time), when the door needs to be re-opened and positioned, the reset button is first pressed to compress the release spring, and the buckle is moved to re-engage the clamping column, and then the door leaf is opened to the positioning angle, and the door leaf can be kept in the open state.

[0032] For those skilled in the art, various corresponding changes and modifications can be made according to the above technical solutions and concepts, and all of these changes and modifications should be included in the protection scope of the claims of the present invention.

Claims

1. A door closer without hydraulic structure, characterized in that: It includes a housing, a slider, a tension spring and a clamping mechanism; A sliding groove is provided in the housing, and the slider is provided in the sliding groove and can slide along the sliding groove; one end of the tension spring is fixedly connected to one end of the housing, and the other end is fixedly connected to the slider; The clamping mechanism is arranged at the other end of the shell, and includes a clamping mechanism shell, a clamping part, a release spring, an electromagnet, a seesaw and a buckle; the buckle, the seesaw, the electromagnet and the release spring are all arranged on the clamping mechanism shell, and the fulcrum of the seesaw is rotatably connected to the clamping mechanism shell through a rotating shaft; the clamping part is arranged at one end of the seesaw, one end of the armature of the electromagnet is connected to one end of the buckle, and the other end of the seesaw is provided with a clamping column, and when the electromagnet is in a power-off state, the armature extends outward and the buckle and the clamping column are detachably buckled; a bayonet matching the clamping part is provided on the slider; one end of the release spring is connected to the clamping mechanism shell, and the other end of the release spring is connected to the other end of the seesaw; when the buckle and the clamping column are buckled, the release spring is compressed by the other end of the seesaw, and the bayonet can reach the position of the clamping part with the sliding of the slider and be buckled with the clamping part.

2. The door closer according to claim 1, characterized in that: The locking portion is arranged at the top of one end of the seesaw, the snap-in is arranged at the bottom of the slider and faces downward, the other end of the release spring is connected to the bottom of the other end of the seesaw and when the buckle and the clamping column are engaged, the release spring is compressed downward by the other end of the seesaw.

3. The door closer according to claim 2, characterized in that: The engaging portion includes a bayonet, a rotating shaft, a rotating seat and a compression spring, wherein the bayonet is fixed to one end of the rotating seat close to the slider, and the end of the rotating seat away from the slider is rotatably connected to the seesaw through the rotating shaft; one end of the compression spring abuts against the seesaw, and the other end abuts against the bayonet; when the compression spring is in an uncompressed state, the top surface position of the bayonet is higher than the bottom surface position of the bayonet.

4. The door closer according to claim 1, characterized in that: The buckle is buckled with the clamping column through a clamping slot, and the buckle is rotatably connected to the clamping mechanism housing through a rotating shaft, and the connection point between the buckle and the rotating shaft is located below the clamping slot.

5. The door closer according to claim 1, characterized in that: A reset button is provided at the other end of the seesaw, and when the reset button is pressed, the release spring is compressed.

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