CN218467420U - Anti-pinch device of vertical hinged door - Google Patents

Abstract

The utility model relates to a door especially relates to a vertical hinged door anti-pinch device. The device comprises a sleeve, a steel wire rope, a positioning body, a nut, a screw rod, a motor, a limiting assembly and a human body infrared sensor; the steel wire rope is wound on the sleeve, the sleeve is sleeved on the driving shaft, the steel wire rope is connected with the positioning body, the positioning body is fixedly connected to the nut, the nut is in threaded connection with the lead screw, and the lead screw is connected with the motor; the motor drives the screw rod to rotate forwards and backwards to drive the screw nut and the positioning body to move in a reciprocating manner, and the positioning body drives the sleeve to rotate forwards and backwards through the steel wire rope to realize door opening and closing; the human body infrared sensors are arranged in front of, behind and on the side of the door leaf; the limiting assembly comprises a limiting roller, a limiting ring and a fixing column; two spacing rollers are installed in the spacing ring, and wire rope passes from between two spacing rollers, and the fixed column rigid coupling is at the both ends of spacing ring. The utility model discloses it hinders to avoid old person, child and the handicapped personage to come in and go out to press from both sides when opening and shutting the door, security when improving the use.

Description

An anti-pinch device for a side-hung door

technical field

The utility model relates to a door, in particular to an anti-pinch device for a swing door.

Background technique

With the continuous development of social economy, the improvement of living standards, and the continuous improvement of living conditions, people began to have higher and higher requirements for the safety performance of doors in densely populated places such as homes and public buildings.

Glass automatic sensor doors and revolving doors generally have their own anti-pinch function. Most of the doors in densely populated places such as homes and public buildings are side-hung doors with door leaves hinged on the door frame. Swing doors usually do not have anti-pinch functions. There is no special anti-pinch function. An anti-pinch device for swing doors suitable for the elderly.

Aging has become a major problem in today's society. The elderly respond relatively slowly and have limited mobility. In densely populated places such as homes and public buildings, it is often inconvenient to open and close swing doors to enter and exit, and there is a high probability of pinching hazards.

Utility model content

In order to overcome the deficiencies of the prior art, the utility model provides an anti-pinch device for a side-hung door, which can prevent the elderly, children and disabled people from being pinched when entering and leaving the side-hung door, and improve the safety during use.

In order to achieve the above object, the utility model adopts the following technical solutions to realize:

The swing door includes a door frame, a door leaf and a handle, the door leaf is hinged in the door frame through a drive shaft, and the handle is installed on the door leaf.

An anti-pinch device for a side-hung door, including a sleeve, a steel wire rope, a positioning body, a nut, a screw, a motor, a limit assembly, and a human body infrared sensor; the wire rope is wound on the sleeve, the sleeve is sleeved on the drive shaft, and the wire rope Connected with the positioning body, the positioning body is fixed on the screw nut, the screw nut is threadedly connected with the screw rod, and the screw rod is connected with the motor; the motor drives the screw rod to rotate forward and reverse, drives the screw nut and the positioning body to move back and forth, and the positioning body drives the sleeve through the wire rope The barrel is reversed to realize opening and closing of the door; the human body infrared sensor is installed on the front, back and side of the door leaf.

The limit assembly includes a limit roller, a limit ring and a fixed column; two limit rollers are installed in the limit ring, the wire rope passes between the two limit rollers, and the fixed column is fixed at both ends of the limit ring .

The door frame is composed of a top beam, a bottom frame and two columns fixed between the top beam and the bottom frame.

An installation groove is arranged in the top beam, and the sleeve, steel wire rope, positioning body, screw nut, screw mandrel and motor are installed in the installation groove.

The front and rear sides of the top beam are provided with a plurality of cooling holes, and the cooling holes communicate with the installation groove.

Compared with the prior art, the beneficial effects of the utility model are:

1) The human body infrared sensor of this utility model is installed on the door leaf and is located at the handle. When the human body infrared sensor detects that someone is close to the edge of the door leaf, the motor drives the screw to rotate, drives the nut and the positioning body to move, and the positioning body drives the sleeve through the wire rope Rotation drives the door leaf to rotate counterclockwise, and then the door leaf can be pulled to open, preventing the elderly, children and disabled people from being pinched when they enter and exit the swing door, and improving the safety during use.

2) The utility model is equipped with a limit assembly, and the steel wire rope passes between the two limit rollers, which reduces the friction force of the steel wire rope during the movement process, improves the smoothness of the steel wire rope movement, and at the same time limits the movement track of the steel wire rope .

3) A plurality of cooling holes are provided on the front and rear sides of the roof beam of the utility model, and the cooling holes are connected with the installation groove, so that the cooling effect is good and the service life of the device is improved.

Description of drawings

Fig. 1 is the three-dimensional structural representation of the utility model;

Fig. 2 is a schematic diagram of explosion of the three-dimensional structure of the door frame of the present invention;

Fig. 3 is a three-dimensional structure schematic diagram of the motor and the transmission part of the utility model;

Fig. 4 is a three-dimensional structural schematic diagram of a sleeve, a steel wire rope, a positioning body and a limit assembly of the utility model;

Fig. 5 is a three-dimensional installation diagram of the human body infrared sensor of the present invention;

Fig. 6 is a schematic diagram of the three-dimensional structure of the limiting assembly of the present invention;

Fig. 7 is a block diagram of the electrical principle of the utility model;

Fig. 8 is the electrical schematic diagram of the utility model.

In the figure: 1-door frame 2-door leaf 3-handle 4-sleeve 5-wire rope 6-positioning body 7-screw nut 8-screw rod 9-limiting assembly 10-motor 11-top beam 12-bottom frame 13-column 21-Drive shaft 22-Installation hole 111-Installation groove 112-Heat dissipation hole 91-Limiting roller 92-Limiting ring 93-Fixing column 010-Human body infrared sensor 011-Transparent plastic plate

Detailed ways

The specific embodiment of the utility model will be further described below in conjunction with accompanying drawing:

As shown in Figures 1-8, the swing door includes a door frame 1, a door leaf 2 and a handle 3. The door leaf 2 is hinged in the door frame 1 through a drive shaft 21 and a bearing, and the handle 3 is installed on the front and back of the door leaf 2.

An anti-pinch device for a side-hung door, comprising a sleeve 4, a steel wire rope 5, a positioning body 6, a screw nut 7, a screw rod 8, a motor 10, a limit assembly 9 and a human body infrared sensor 010, the steel wire rope 5 is wound on the sleeve 4, The sleeve 4 is sleeved on the drive shaft 21 , the wire rope 5 is connected to the positioning body 6 , the positioning body 6 is fixedly connected to the screw nut 7 , the screw nut 7 is screwed to the screw rod 8 , and the screw rod 8 is connected to the motor 10 . The motor 10 drives the screw rod 8 to rotate forward and backward, drives the screw nut 7 and the positioning body 6 to move back and forth, and the positioning body 6 drives the sleeve 4 and the drive shaft 21 to rotate forward and reverse through the wire rope 5, and drives the door leaf 2 to rotate counterclockwise or clockwise to realize Open and close the door.

The door frame 1 is composed of a top beam 11 , a bottom frame 12 and two columns 13 fixed between the top beam 11 and the bottom frame 12 . The top beam 11 is provided with an installation groove 111, and the sleeve 4, the steel wire rope 5, the positioning body 6, the screw nut 7, the screw mandrel 8 and the motor 10 are installed in the installation groove 111.

A plurality of cooling holes 112 are provided on the front and rear sides of the top beam 11 , and the cooling holes 112 communicate with the installation groove 111 . The heat dissipation effect is good, and the service life of the device is improved.

The limit assembly 9 includes a limit roller 91, a limit ring 92 and a fixed column 93; two limit rollers 91 are horizontally installed in the limit ring 92, and the wire rope passes between the two limit rollers 91, and the fixed column 93 It is affixed to the two ends of the outer wall of the limit ring 92, and the fixed column 93 is affixed to the door frame 1. The steel wire rope 5 passes between the two limiting rollers 91 to reduce the friction force of the steel wire rope 5 during movement, improve the smoothness of the movement of the steel wire rope 5, and simultaneously limit the movement track of the steel wire rope 5 .

The front, the back and the side of door leaf 2 are all provided with mounting hole 22 at handle 3 places, and human body infrared sensor 010 is placed in the mounting hole 22, and transparent plastic plate 011 is affixed to the aperture of mounting hole 22.

As shown in Fig. 7 and Fig. 8, the controller of the utility model adopts single-chip microcomputer AT89C51, the motor 10 adopts 28BYJ48 stepping motor, and the human body infrared sensor 010 adopts pyroelectric infrared sensor. The control system is mainly composed of power module, sensor, signal processing unit, BISS0001 chip, MCU unit, and ULN2003 chip; the signal detection and processing part is composed of pyroelectric infrared sensor, signal processing unit and BISS0001 chip; the function of the sensor is to sense whether there is someone Therefore, a pyroelectric infrared sensor is used, which is only sensitive to infrared radiation with a wavelength of about 10um (infrared wavelength radiated by the human body), and will not cause probe action to objects other than the human body; the MCU part uses It is the 89C51 single-chip microcomputer produced by ATMEL company. This single-chip microcomputer has the advantages of low price, simple development, convenient operation and encryption, so the market share is very large. The role of the single chip microcomputer is to process the signal sent by BISS0001 and send it to the ULN2003 chip, and the ULN2003 chip drives the stepping motor.

The pyroelectric infrared sensor is used to detect whether the human body is on the edge of the door leaf, and the pulse signal is transmitted to the single-chip microcomputer. After the single-chip microcomputer judges, the ULN2003 drives the stepping motor to move, and the door is opened and closed through the positive and negative rotation of the stepping motor.

The working principle and working process of the utility model are as follows: Pedestrians are monitored through the human body infrared sensor 010, and when the human body infrared sensor 010 detects that someone's hands are close to the edge of the door leaf 2, the pulse signal is transmitted to the controller, and the controller controls the motor 10 after judging Run, drive the screw rod 8 to rotate, the screw rod 8 drives the screw nut 7 to drive the positioning body 6 to move, the positioning body 6 drives the sleeve 4 to rotate through the steel wire rope 5, because the steel wire rope 5 is located at the front side of the sleeve 4, so the steel wire rope 5 is moving with the positioning body 6. During the movement, the sleeve 4 will be driven to drive the drive shaft 21 to rotate counterclockwise, which will drive the door leaf 2 to move counterclockwise, and then the door leaf 2 will be opened. On the contrary, after the human body infrared sensor 010 fails to detect the human body, the pulse signal is transmitted to the controller. After the controller judges, the motor 10 is controlled to run in reverse, and the screw mandrel 8 is driven to rotate in reverse, and the screw nut 7 drives the positioning body 6 to move backward. The positioning body 6 drives the sleeve 4 to rotate through the wire rope 14, and the wire rope 5 is rolled up to close the door.

The above is only a preferred embodiment of the utility model, but the scope of protection of the utility model is not limited thereto. Any equivalent replacement or change of the new technical solution and the concept of the utility model shall be covered by the protection scope of the utility model.

Claims (4)

1. An anti-pinch device of a vertical hinged door comprises a door frame, a door leaf and a handle, wherein the door leaf is hinged in the door frame through a driving shaft, and the handle is arranged on the door leaf;

the method is characterized in that: the device comprises a sleeve, a steel wire rope, a positioning body, a nut, a screw rod, a motor, a limiting assembly and a human body infrared sensor; the steel wire rope is wound on the sleeve, the sleeve is sleeved on the driving shaft, the steel wire rope is connected with the positioning body, the positioning body is fixedly connected to the nut, the nut is in threaded connection with the lead screw, and the lead screw is connected with the motor; the motor drives the screw rod to rotate forwards and backwards to drive the screw nut and the positioning body to move in a reciprocating manner, and the positioning body drives the sleeve to rotate forwards and backwards through the steel wire rope to realize door opening and closing; the human body infrared sensors are arranged in front of, behind and on the side of the door leaf;

the limiting assembly comprises a limiting roller, a limiting ring and a fixing column; two spacing rollers are installed in the spacing ring, and wire rope passes from between two spacing rollers, and the fixed column rigid coupling is at the both ends of spacing ring.

2. The anti-pinch device of the vertical hinged door of claim 1, characterized in that: the door frame consists of a top beam, a bottom frame and two upright columns fixedly connected between the top beam and the bottom frame.

3. The anti-pinch device of the vertical hinged door of claim 2, characterized in that: the top beam is internally provided with an installation groove, and the sleeve, the steel wire rope, the positioning body, the screw, the lead screw and the motor are arranged in the installation groove.

4. The anti-pinch device of the vertical hinged door of claim 3, characterized in that: a plurality of heat dissipation holes are formed in the front side and the rear side of the top beam and communicated with the mounting groove.

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