CN215927120U

CN215927120U - Non-resistance door opening and closing device

Info

Publication number: CN215927120U
Application number: CN202122060830.1U
Authority: CN
Inventors: 杜浩
Original assignee: Zhuhai Free Trade Zone Yinke Schulte Gated Technology Co ltd
Current assignee: Zhuhai Free Trade Zone Yinke Schulte Gated Technology Co ltd
Priority date: 2021-08-30
Filing date: 2021-08-30
Publication date: 2022-03-01
Anticipated expiration: 2031-08-30

Abstract

The utility model discloses a door closer without resistance for opening a door, and aims to provide a door closer which is reasonable in design and can realize free switching of opening and closing the door with resistance and without resistance completely. The electromagnetic control device comprises a shell, a door closer body and an electromagnetic control device which is hermetically connected with the right end of the door closer body are arranged in the shell, a cavity is arranged in the door closer body, a plunger rod is arranged in the cavity and divides the cavity into a left cavity and a right cavity, a reset spring is arranged between the plunger rod and the right end of the door closer body, an oil return pipeline is arranged in the side wall of the door closer body, the head end of the oil return pipeline is communicated with the left cavity, a valve core which is positioned at the side end of the electromagnetic control device is arranged at the right end of the door closer body, a counter bore which is communicated with the oil return pipeline is arranged on the valve core, an oil return hole which is communicated with the right cavity is arranged on the side wall of the counter bore, a steel ball is arranged in the counter bore, and the electromagnetic control device drives the steel ball to block the oil return hole in a power-on state. The utility model is applied to the technical field of door installation accessories.

Description

Non-resistance door opening and closing device

Technical Field

The utility model relates to a door closer, in particular to a door closer without resistance.

Background

The door closer is a hydraulic press similar to a spring on the door head, can be released after being compressed after the door is opened, automatically closes the door, has the effect like a spring door, and can ensure that the door is accurately and timely closed to an initial position after being opened.

The working principle of the door closer is as follows: when the door is opened, the door body drives the connecting rod to act, the transmission gear is rotated, and the rack plunger is driven to move towards the right. During the rightward movement of the plunger, the spring is compressed, and the hydraulic oil in the right chamber is also compressed. The check valve ball on the left side of the plunger is opened under the action of oil pressure, and hydraulic oil in the right cavity flows into the left cavity through the check valve. After the door is opened, the spring is compressed during the opening process, so that the accumulated elastic potential energy is released, the plunger is pushed to the left side, the transmission gear and the door closer connecting rod are driven to rotate, and the door is closed.

However, for special people or special environments, the door needs to be opened for a long time, for example, under the condition of unloading, or when people with inconvenient actions pass through, the door needs to be kept in a normally open state for a period of time, the existing door closer manually pulls the door and does not reset the spring, so that the plunger cannot push towards the left side, and the door is kept in the normally open state, but the operation mode is obviously not suitable for the existing consumption requirements.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provide the door closer which is reasonable in design and can realize free switching of opening and closing the door with resistance and completely without resistance.

The technical scheme adopted by the utility model is as follows: the utility model comprises a shell, wherein a door closer body and an electromagnetic control device hermetically connected with the right end of the door closer body are arranged in the shell, a cavity is arranged in the door closer body, a plunger rod is arranged in the cavity, the plunger rod divides the cavity into a left cavity and a right cavity, a return spring is arranged between the plunger rod and the right end of the door closer body, an oil return pipeline is arranged in the side wall of the door closer body, the head end of the oil return pipeline is communicated with the left cavity, the right end of the door closer body is provided with a valve core positioned at the side end of the electromagnetic control device, the valve core is provided with a counter bore communicated with the oil return pipeline, the side wall of the counter bore is provided with an oil return hole communicated with the right cavity, the oil return hole is formed in the bottom of the oil return hole, and the electromagnetic control device drives the oil return hole to block the oil return hole in a power-on state.

Further, electromagnetic control device include electrically controlled device and with electrically controlled device electric connection's electric switch, electrically controlled device includes solenoid valve, coil, valve rod, drive head and sealing washer, the solenoid valve is located the side of case, the coil install in inside the solenoid valve, the valve rod install in inside the coil, the one end of drive head with the valve rod is connected, the other end of drive head stretches into inside the counter bore, the sealing washer cover establish install in the drive head under the state that electric switch opened the circular telegram, the drive head can push the steel ball is in move to the upper end of oil gallery in the counter bore.

Furthermore, an incomplete gear rotating shaft is further arranged in the door closer body, a through groove is formed in the plunger rod, and a gear strip matched with the incomplete gear rotating shaft is arranged on the side wall of the through groove.

Further, the non-resistance door closer that opens and closes still includes the rocking arm, the one end of rocking arm with be provided with connection structure between the incomplete gear pivot, connection structure includes rotating head, bolt and spacing post, the rotating head install in the lower extreme of rocking arm just is fixed in the incomplete gear pivot, the one end of bolt is fixed in on the rocking arm, the other end of bolt passes the rocking arm with be fixed in behind the rotating head incomplete gear pivot, the rotating head is the cylinder commentaries on classics piece, and be in be equipped with integrated into one piece's spacing arc piece on the cylinder commentaries on classics piece, spacing post installation with the lower extreme of rocking arm, and be in on the rotation track of spacing arc piece.

Further, the counter bore is a stepped counter bore.

The utility model has the beneficial effects that: the electromagnetic control device is used for realizing free switching of opening and closing the door with resistance and without resistance, namely, in a power-on state, the electromagnetic control device drives the steel balls to block the oil return hole, so that the oil return pipeline is completely sealed to achieve the control effect on the rotating arm, the reset spring cannot reset, and the door is in a normally open state, so that the requirements of special people and environment on door closer products are met; when the door is in a power-off state, the steel balls are pushed open under the pressure of hydraulic oil, so that the oil return pipeline opens an oil circuit circulation function, the door closer product quickly releases the control force on the door, and the force transmission of opening and closing the door is achieved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the open housing of the present invention;

fig. 3 is an internal structural view of the door closer body;

FIG. 4 is a schematic view of a partial connection of the return line to the spool;

FIG. 5 is a cross-sectional view of the solenoid control device and the valve cartridge in the middle;

FIG. 6 is a schematic structural view of a connection structure;

fig. 7 is a schematic view of the structure of the valve cartridge.

Detailed Description

As shown in fig. 7 of fig. 1, in this embodiment, the present invention includes a housing 1, a door closer body 2 and an electromagnetic control device 3 hermetically connected to a right end of the door closer body 2 are disposed in the housing 1, a cavity is disposed in the door closer body 2, a plunger rod 4 is disposed in the cavity, the plunger rod 4 divides the cavity into a left cavity 5 and a right cavity 6, a return spring 7 and a second spring 72 disposed in the return spring 7 are disposed between the plunger rod 4 and the right end of the door closer body 2, an oil return pipe 8 is disposed in a side wall of the door closer body 2, a head end of the oil return pipe 8 is communicated with the left cavity 5, a valve core 9 disposed at a side end of the electromagnetic control device 3 is disposed at the right end of the door closer body 2, the valve core 9 is provided with a counter bore 91 communicated with the oil return pipe 8, an oil return hole 92 communicated with the right cavity 6 is formed in the side wall of the counter bore 91, a steel ball 10 is arranged in the counter bore 91, and the electromagnetic control device 3 drives the steel ball 10 to block the oil return hole 92 in a power-on state.

In this embodiment, the oil return pipe 8 includes a first pipe 81 and a second pipe 82, one end of the first pipe 81 is communicated with the left cavity 5, the other end of the first pipe 81 is communicated with the counterbore 91, one end of the second pipe 82 is communicated with the oil return hole 92, and the other end of the second pipe 82 is communicated with the right cavity 6, when the electromagnetic control device 3 is in a power-off state, hydraulic oil in the door closer body 2 flows into the valve core 9 from the left cavity 5 through the first pipe 81, then flows into the second pipe 82 through the oil return hole 92 of the valve core 9, and finally flows back to the right cavity 6 through the second pipe 82.

In this embodiment, the electromagnetic control device 3 includes an electric control device and an electric control switch 31 electrically connected to the electric control device, the electric control switch 31 is installed on the door body, the electric control device includes an electromagnetic valve 32, a coil 33, a valve rod 34, a driving head 35 and a sealing ring, the electromagnetic valve 32 is located at a side end of the valve core 9, the coil 33 is installed inside the electromagnetic valve 32, the valve rod 34 is installed inside the coil 33, one end of the driving head 35 is connected to the valve rod 34, the other end of the driving head 35 extends into the counterbore 91, the sealing ring is installed on the driving head 35 in a sleeving manner, when the electric control switch 31 is turned on, the coil 33 is turned on by a 24V current, and the driving head 35 is controlled by electromagnetic induction of the coil 33 to push the steel ball 10 to move in the counterbore 91 to an upper end of the oil return hole 92, thereby realizing the switching of opening and closing of the oil return pipeline 8.

In this embodiment, in order to achieve the perfect matching between the valve element 9 and the steel ball 10 to meet the requirement of sealing hydraulic oil, stepped counter bores with different angles in a sectional manner are adopted inside the valve element 9, so that the steel ball 10 can stably and smoothly slide into the stepped counter bore of the valve element 9 under the action of electromagnetic thrust, and the steel ball 10 is completely sealed with the oil return hole 92 of the valve element 9.

In this embodiment, an incomplete gear rotating shaft 11 is further disposed in the door closer body 2, a through groove 41 is disposed in the plunger rod 4, and a gear rack 42 adapted to the incomplete gear rotating shaft 11 is disposed on a side wall of the through groove 41; the non-resistance door opening and closing device also comprises a rotating arm 12, a connecting structure is arranged between one end of the rotating arm 12 and the incomplete gear rotating shaft 11, the connecting structure comprises a rotating head 13, a bolt 14 and a limiting column 15, the rotating head 13 is mounted at the lower end of the rotating arm 12 and fixed on the incomplete gear rotating shaft 11, one end of the bolt 14 is fixed on the rotating arm 12, the other end of the bolt 14 passes through the rotating arm 12 and the rotating head 13 and then is fixed on the incomplete gear rotating shaft 11, the rotating head 13 is a cylindrical rotating block, and the cylindrical rotating block is provided with an integrally formed limiting arc block 131, the limiting column 15 is arranged at the lower end of the rotating arm 12, and on the rotation track of the limiting arc-shaped block 131, the limiting arc-shaped block 131 and the limiting column 15 are designed in a matched manner, so that the maximum opening and closing angle of the door can be controlled.

In this embodiment, when the door is opened, the door body drives the rotating arm 12 to move, the incomplete gear rotating shaft 11 is rotated to drive the plunger rod 4 to move rightwards, the return spring 7 and the second spring 72 are compressed in the process that the plunger rod 4 moves rightwards, hydraulic oil in a right cavity is also compressed, when the door is opened to the end, the limiting column 15 can block the limiting arc-shaped block 131 so as to control the maximum angle of the opened door, at the moment, if the electromagnetic control device 3 is in the power-on state, the steel ball 10 can block the oil return pipeline 8 so as to enable the return spring 7 and the second spring 72 to be incapable of resetting, so that the normally open state of the door is realized, if the electromagnetic control device 3 is in the power-off state, the door can be closed under the action force of the return spring 7 and the second spring 72 like a normal door closing device, and the two springs of the return spring 7 and the second spring 72 are designed so as to enable the closing force to be larger, so as to meet the requirement of closing the door And (6) obtaining.

The utility model is applied to the technical field of door installation accessories.

While the embodiments of the present invention have been described in terms of practical embodiments, they are not to be construed as limiting the meaning of the present invention, and modifications of the embodiments and combinations with other embodiments will be apparent to those skilled in the art in light of the present description.

Claims

1. The utility model provides a non-resistance door closer that opens door which characterized in that: the door closer comprises a shell (1), a door closer body (2) and an electromagnetic control device (3) which is connected with the right end of the door closer body (2) in a sealing mode are arranged in the shell (1), a cavity is arranged in the door closer body (2), a plunger rod (4) is arranged in the cavity, the plunger rod (4) divides the cavity into a left cavity (5) and a right cavity (6), a reset spring (7) is arranged between the plunger rod (4) and the right end of the door closer body (2), an oil return pipeline (8) is arranged in the side wall of the door closer body (2), the head end of the oil return pipeline (8) is communicated with the left cavity (5), a valve core (9) which is located at the side end of the electromagnetic control device (3) is arranged at the right end of the door closer body (2), and a counter bore (91) which is communicated with the oil return pipeline (8) is arranged on the valve core (9), the side wall of the counter bore (91) is provided with an oil return hole (92) communicated with the right cavity (6), a steel ball (10) is arranged in the counter bore (91), and the electromagnetic control device (3) drives the steel ball (10) to block the oil return hole (92) in a power-on state.

2. The door closer for a door opening without resistance according to claim 1, wherein: the electromagnetic control device (3) comprises an electric control device and an electric control switch (31) electrically connected with the electric control device, the electric control device comprises an electromagnetic valve (32), a coil (33), a valve rod (34), a driving head (35) and a sealing ring, the electromagnetic valve (32) is positioned at the side end of the valve core (9), the coil (33) is arranged inside the electromagnetic valve (32), the valve rod (34) is arranged in the coil (33), one end of the driving head (35) is connected with the valve rod (34), the other end of the driving head (35) extends into the counter bore (91), the sealing ring is sleeved on the driving head (35), under the state that the electric control switch (31) is switched on and electrified, the driving head (35) can push the steel ball (10) to move in the counter bore (91) to the upper end of the oil return hole (92).

3. The door closer for a door opening without resistance according to claim 1, wherein: an incomplete gear rotating shaft (11) is further arranged in the door closer body (2), a through groove (41) is formed in the plunger rod (4), and a gear strip (42) matched with the incomplete gear rotating shaft (11) is arranged on the side wall of the through groove (41).

4. A door closer for a door opening without resistance as defined in claim 3, wherein: the non-resistance door opening and closing device also comprises a rotating arm (12), a connecting structure is arranged between one end of the rotating arm (12) and the incomplete gear rotating shaft (11), the connecting structure comprises a rotating head (13), a bolt (14) and a limiting column (15), the rotating head (13) is arranged at the lower end of the rotating arm (12) and is fixed on the incomplete gear rotating shaft (11), one end of the bolt (14) is fixed on the rotating arm (12), the other end of the bolt (14) penetrates through the rotating arm (12) and the rotating head (13) and then is fixed on the incomplete gear rotating shaft (11), the rotating head (13) is a cylindrical rotating block, and the cylindrical rotating block is provided with an integrally formed limiting arc-shaped block (131), and the limiting column (15) is arranged at the lower end of the rotating arm (12) and is arranged on a rotating track of the limiting arc-shaped block (131).

5. The door closer for a door opening without resistance according to claim 1, wherein: the counterbore (91) is a stepped counterbore.