KR200436370Y1 - Air cylinder type door open and close structure for electromagnetic wave test chamber - Google Patents

Abstract

The present invention relates to an opening / closing structure of a shielding door using pneumatic pressure to open and close a shielding door applied to an electromagnetic shielding room. More specifically, the door frame of the door for entrance and exit of an electromagnetic shielding room installed to have a perfect electromagnetic shielding structure. In the locking and unlocking operation between the door and the shielded door, the operating rod of the locking latch installed on the door is rotated by using an air cylinder driven through the opening / closing switch, so that the locking latch is locked to the hook or released, thereby opening and closing the door. This makes it easy to handle by simple button operation without the need for a separate opening and closing lever for opening and closing of the door, and it can maintain the front of the door neatly and improve the aesthetics. And piston rod to the piston rod of the air cylinder By applying a safety means consisting of an elastic member for pulling in the mouth direction and an air pressure release button for forcibly discharging the air pressure in the air cylinder, the operation of the air pressure emergency release button is stopped when the air supply is stopped due to an unexpected factor. Through the door opening operation can be made to ensure that the workers in the shielded room to escape safely and to ensure the reliability of the quality.

Electromagnetic waves, shielded rooms, piston rods, air cylinders, safety measures.

Description

Air cylinder type door open and close structure for electromagnetic wave test chamber

1 is an exemplary front view showing an application state of the shield door opening and closing structure according to the present invention.

Figure 2 is a perspective view of the shield door opening and closing structure according to the present invention.

Figure 3a and 3b is an unlocking operation state of the shield door opening and closing structure according to the present invention.

Figure 4a and 4b is a locking operation state of the shield door opening and closing structure according to the present invention.

5 is a view showing an opening and closing switch applied to the shielding door opening and closing structure of the present invention.

6 is a view showing an existing structure of the present invention.

Explanation of symbols on the main parts of the drawings

A: shield door F: frame

S1: Opening switch S2: Air pressure emergency release button

1: shielded door body 2: cover case

3: Operation piece 3 ': Fixed shaft

4,4 ': Connecting rod 5: Ball link

6: working rod 6 ': rotating piece

7: Hook 8: Lock Latch

8 ': rolling roll 10: air cylinder

11: piston rod 12: fixed shaft

20: open / close switch 21: switch operating piece

30: elastic member 40: safety means

The present invention relates to the opening and closing structure of the shielding door for opening and closing the shielding door applied to the electromagnetic shielding room using pneumatic, and more specifically, the door frame of the door for access of the electromagnetic shielding room installed to have a complete electromagnetic shielding structure In the locking and unlocking operation between the door and the shielded door, the operation of the locking latch installed on the door is rotated by using an air cylinder interlocked through an opening / closing switch, thereby opening or closing the door as the locking latch is locked to or released from the hook. This makes it easy to handle by simple button operation without the need for a separate opening and closing lever for opening and closing of the door, and it can maintain the front of the door neatly and improve the aesthetics. And piston rod to the piston rod of the air cylinder By applying safety means consisting of an elastic member for pulling in the direction of the mouth and an air pressure release button for forcibly discharging the air pressure in the air cylinder, the operation of the air pressure emergency release button when the air supply is interrupted due to an unexpected factor Through the door opening operation can be made so that the workers in the shielded room can safely escape and to ensure the reliability of the quality.

In general, an electromagnetic shielding room that completely blocks the inflow and outflow of electromagnetic waves is used to test the generation of electromagnetic waves for various products, ranging from small electronic appliances to large automobiles. It has a perfect electromagnetic shielding structure, so there is no problem, but due to the structural characteristics of the door for access of the electromagnetic shielding room, electromagnetic inflow and outflow can be generated through this door, so that the door between the shielded door and the door frame Tighter coupling is required.

As such, the door door and the shield door of the door are tightly and tightly coupled to each other in a male and female structure so that the shield door can be opened and closed to the door frame of the door in a state where electromagnetic waves are completely blocked. In order to engage and disengage the male and female doorframes and the shielding doors, the operation of the shielding doors requires a lot of effort, and in some cases, the door door frames and the shielding doors of the shielding room. It is not possible to expect a perfect coupling between them, so that the shielding door may not be completely closed. Therefore, the shielding of electromagnetic waves inside the shielding room may not be precisely performed. There was.

In view of the above problems, the existing Utility Model Registration No. 20-0425319, "Shielding door opening and closing structure of the electromagnetic shielding room" and Utility Model Registration No. 20-0425320, "Shielding door for the electromagnetic shielding room as shown in FIG. Lower interlocking opening and closing structure " and the rotational motion of the operation shaft 50 is converted into a linear motion by the ball link and the connecting rod 51 connected to both ends of the operating piece, respectively, and synchronized with the rotational motion of the operating rod 52. The image of the shielding door by being transferred. The arc-shaped locking latches 53 installed at the lower sides are respectively bound to the hanging holes 54 of the door frame WF, or the binding state is released. It is known that a structure that allows close opening and closing operation of the shielding door is made, but this is a structure for opening and closing the door by operating the operating lever 55 is exposed to the front of the door both the closed end to expose the following problems there was.

⊙ Power for the opening and closing of the door is generated solely by the manipulator's artificial opening and closing operation lever, which requires a lot of force for opening and closing work, and excessive force is applied, causing premature wear or deformation of the operating parts. Problem that shortens

⊙ If the door is not coupled to the door frame and the operating lever can be operated even in a gap, inadvertent insertion of the user's finger or foreign material into the gap can cause damage to the body or impede hermeticity, resulting in incomplete shielding of electromagnetic waves. There is a problem that reduces the reliability of the product,

⊙ The opening and closing operation lever is exposed to protrude to the front of the door, so there is a problem that the aesthetics are impaired.

The present invention has been devised to solve the problems caused by the existing structure as described above,

The purpose of the present invention is to minimize the power consumption in the opening and closing process of the door, making it easy to handle and improving the aesthetics of the door, and it is essential to close the door in an improper state such as a gap between the door and the frame. It is possible to prevent the user's body damage due to carelessness in advance, and when the air supply is forced out through the air pressure emergency release button when the air supply is stopped due to an unexpected factor, the door opens automatically. It is to provide an opening and closing structure of the shielding door for the electromagnetic shielding room so that the worker in the shielding room can be safely escaped,

In order to achieve the above object, the present invention is rotated using an air cylinder driven through an opening button and an opening / closing switch, which will be described later, to operate the rod of the locking clasp installed in the door, but only in a state in which the door and the door frame are closely contacted without a gap. An open / close switch is presented which leads to initiating the closing operation.

In addition, the present invention proposes a safety means consisting of an elastic member for pulling the piston rod in the immersion direction to the piston rod of the air cylinder and an air pressure emergency discharge button for forcibly discharging the air pressure in the air cylinder.

Hereinafter, the configuration of the subject innovation in detail based on the accompanying drawings as follows.

1 is a front view illustrating an application state of a shielding door opening and closing structure using pneumatic according to the present invention, Figure 2 is a perspective view of the shielding door opening and closing structure according to the present invention,

The present invention is to install the operating piece (3) rotatably installed through the fixed shaft (3 ') in the cover case (2) that is attached to the front side of the shielding door body (1) forming a shielding door (A) The inner side of the connecting rod 4 and 4 'having the ball link 5 at both ends is connected to the operating piece 3, and the outer side of each connecting rod 4 and 4' is a rotating piece 6 of the operating rod 6. '(8)', respectively, with a locking latch (8) having a rolling roll (8 ') coupled to the hook (7) of the door frame (WF) or detached from the hook (7) at the outer end of the operating rod (6). In the known shield door opening and closing structure to be provided,

An open switch (S1) respectively installed on the front surface of the cover case (2) and the shield door (A);

A pneumatic solenoid (AS) connected to the open switch (S1);

An air valve (AV) configured to be connected to the pneumatic solenoid (AS) in a state in which an external compressed air supply device (air compressor) (not shown) is connected;

In the state configured to be connected to the air valve (AV) in the cover case (2) is installed so as to be movable around the fixed shaft (12) coupled to the lower frame (F) and the upper end on the operating piece (3) An air cylinder 10 having a piston rod 11 arranged therein;

"On" through the contact with the switch operating piece 21 fixed to the door frame (WF) is configured to be mounted on one side of the shielded door body (1) in a state configured to be connected to the pneumatic solenoid (AS). Off ", the on-off switch 20 for operating the piston rod 11 in the locking direction when in the" on "state,

Both ends are fixed to the operating piece (3) and the upper frame (F1) and the elastic member 30 to always be given a tension force to pull the piston rod 11 in the immersion direction, and the front of the cover case (2) and The shielding door (A) is installed inside each of the safety means 40 consisting of an air pressure emergency discharge button (S2) is installed to be connected to the pneumatic solenoid (AS), respectively.

In the above, the elastic member 30 is not limited to a specific structure, but is preferably a tension coil spring as shown in the figure.

※ Unexplained code in the drawing ※

(R) is the electromagnetic shielding room,

(H) shows the hinge axis of the shielded door.

Referring to the operation of the subject innovation having the configuration as described above in detail.

1 and 4 (a) and 4 (b) show a state in which the shielding door A is closed on the door frame WF of the electromagnetic shielding room R, in which the piston rod 11 of the air cylinder 10 is in this state. ) Is raised and coupled to the hook 7 of the door frame WF while the locking latch 8 is lowered, and the on / off switch 20 at the upper end of the shield door A contacts the switch operating piece 21. It is "on".

When the shield door A is to be opened in the closed state, first, by pressing the open switch S1 provided on the cover case 2 of the shield door body 1, the " on " will turn on the pneumatic solenoid AS. Controls the air valve AV to supply air to immerse the piston rod 11 of the air cylinder 10 downward so that the operating piece 3 coupled to the upper end of the piston rod 11 rotates counterclockwise. The rotational force of the operation piece 3 remains in the connecting table 4 and 4 'via ball links 5 respectively connected to both sides of the operation piece 3 as shown in FIGS. 3 (a) and 3 (b). Acts as a pulling force, and this acting force acts as a turning force for rotating the rotating piece 6 'connected to the connecting rod 4, 4'. As a result, the rotating piece 6 'is fixed. The operating rod (6) rotated by a certain angle.

As the actuation rod 6 is rotated in this way, the locking latches 8 installed on the other side of the actuation rod 6 are rotated, thereby causing the rolling rolls 8 'of the tip to be positioned on the upper and lower portions of the door frame WF, respectively. Riding on the guide surface of the arc-shaped inside the hook (7) is installed to be released from the hook (7) to the unlocked state, and then simply pull the shield door (A) open as it is.

When the shielded door A in such an open state is to be closed again to shut off the inside and the outside of the electromagnetic shielding room R in a sealed state, the operator pushes the shielding door A from the outside to contact the door frame WF. Bar door (A) is in contact with the door frame (WF) so that the rolling roll (8 ') of the top of the locking latch (8) is located directly below the hook (7) and a part of the shield door (A) is the door frame ( The door is closed to the position where the opening / closing switch 20 comes into contact with the switch operating piece 21 and is pressed "on" without any gap between the door frame (WF) and the shielding door (A). (A) is smoothly rotated by the hinge shaft (H) so that it can be moved effortlessly.

Therefore, it is possible to close the shield door (A) by the manual manual operation of the operator, not a mechanical device, until the gap between the door frame (WF) and the shield door (A) can not be formed at all, for example, the door frame ( Even if a finger or other foreign object is caught in the gap between the WF) and the shielding door (A), it can be easily removed and the body or foreign material can be prevented from being damaged.

On the other hand, when the opening and closing switch 20 is “on” when the door is closed, the shielding door A is controlled by the pneumatic solenoid AS by the signal of the opening and closing switch 20 so as to control the air valve AV of the air cylinder 10. Air is supplied to the piston rod 11 to be pulled out so that the operating piece 3 is rotated in the clockwise direction. At this time, the elastic member 30 maintains the state in which it is forcibly extended.

Meanwhile, the rotational force of the operating piece 3 is intact on the connecting table 4 and 4 'via ball links 5 respectively connected to both sides of the operating piece 3 as shown in FIGS. 4 (a) and 4 (b). This force acts as a pushing force, and this acting force acts as a turning force for rotating the rotating piece 6 'connected to the connecting rod 4, 4' in the opposite direction to the opening. The piece 6 'rotates the operating rod 6 in the opposite direction, causing the locking latch 8 to rotate in the opposite direction, so that the rolling roll 8' of the tip is provided on the door frame WF. Since the vehicle rides smoothly on the arc-shaped guide surface inside and remains tightly bound, the shielding door A can keep the entrance door of the electromagnetic shielding room A closed and blocked.

On the other hand, when the shielding door A is locked, when the control of the air pressure supplied due to external factors such as a power failure or failure of an external compressed air supply device (air compressor) (not shown) is impossible, the air cylinder 10 Since the piston rod 11 is not immersed due to the filled air pressure therein, the air cylinder 10 may not be operated even when the opening switch S1 is pressed.

In such an emergency state, an operator inside or outside the electromagnetic shielding room R may be simply installed in the front of the cover case 2 and inside the shielding door A, and may be associated with a pneumatic solenoid AS. Pressing the air pressure emergency discharge button (S2) is installed so that the pneumatic solenoid (AS) to control the air valve (AV) to forcibly discharge the air pressure in the air cylinder (10) by immersion of the piston rod (11) This becomes possible and thus the elastic member 30 which has been forcibly elongated in the locking process of the shielding door A rotates the operating piece 3 counterclockwise through its own elastic contracting force. By immersing the piston rod 11 as in the opening, the shielding door A can be opened by the same opening operation as when the above-described normal opening switch S1 is pressed.

As described above, although the present invention has been described in the above embodiments, it is not necessarily limited thereto, and various modifications may be made without departing from the scope and spirit of the present invention.

As can be clearly seen from the above description, according to the shielding door opening and closing structure of the electromagnetic shielding room of the present invention, it is possible to eliminate the artificial effort in the opening and closing process of the shielding door to minimize the consumption of power, and to facilitate the handling of the door. Aesthetics can be improved, and the door can be prevented from being inadvertently closed, such as a gap between the door and the door frame, thereby preventing inadvertent damage to the user's body. When the air supply is forced out through the air pressure emergency discharge button when the air supply is stopped due to a factor, the door is opened automatically through the elastic member so that the worker in the shielded room can be safely escaped. It provides a useful effect of ensuring safety.

Claims (1)

An operating piece (3) rotatably installed through a fixed shaft (3 ') is installed in a cover case (2) attached to one side of the front surface of the shielded door body (1) constituting the shielding door (A). 3) the inner side of the connecting rods 4, 4 'having ball links 5 at both ends thereof, and the outer side of each connecting rod 4, 4' is connected to the rotating piece 6 'of the operating rod 6; The outer end of the operating rod (6) is coupled to each other is provided with a locking latch (8) having a rolling roll (8 ') coupled to the hook (7) of the door frame (WF) or separated from the hook (7) In the known shielded door opening and closing structure, An open switch (S1) respectively installed on the front surface of the cover case (2) and the shield door (A); A pneumatic solenoid (AS) connected to the open switch (S1); An air valve (AV) configured to be connected to the pneumatic solenoid (AS) in a state in which an external compressed air supply device (air compressor) (not shown) is connected; In the state configured to be connected to the air valve (AV) in the cover case (2) is installed so as to be movable around the fixed shaft 12 coupled to the lower frame (F) and the upper end on the operating piece (3) An air cylinder 10 having a piston rod 11 arranged therein; "On" through the contact with the switch operating piece 21 fixed to the door frame (WF) is configured to be mounted on one side of the shielded door body (1) in a state configured to be connected to the pneumatic solenoid (AS). Off ", the on-off switch 20 for operating the piston rod 11 in the locking direction in the" on "state, Both ends are fixed to the operating piece (3) and the upper frame (F1) and the elastic member 30 to always be given a tension force to pull the piston rod 11 in the immersion direction, and the front of the cover case (2) and For electromagnetic shielding room using pneumatic pressure, characterized in that it comprises a safety means 40 which are respectively installed in the shielding door (A) is configured to be connected to the pneumatic solenoid (AS), the air emergency discharge button (S2) Opening and closing structure of shielded door.

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