JP2803021B2 - Door structure of environmental test equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door structure of an environmental test apparatus, and more particularly to an improvement of a sliding door.

[0002]

2. Description of the Related Art An environmental test apparatus of this kind used for performing a characteristic test or the like of a sample such as an electronic component or a chemical product at a specific temperature, for example, a door structure of a constant temperature apparatus is as follows. Various types have been proposed and implemented in the past. A hinge is provided at one end of a door made of a rigid body and opens and closes around this hinge. One in which a rigid door formed into a curved surface is rotated along the opening in the device main body so as to fit into the opening in the front surface of the device main body formed in a curved surface (JP-A-2-146489). A door made of a rigid body is opened and closed by moving up and down along a guide (Japanese Patent Application Laid-Open No. 2-96635). One in which a door is constituted by a sheet having flexibility and heat resistance, and is opened and closed by winding and rewinding the door (JP-A-62-42749). A plurality of plate-like members are connected in a freely bendable manner to form an armor-like door, and the door is slid to open and close (Japanese Utility Model Laid-Open No. 3-38145).

[0003]

However, the conventional door structures as described above have both advantages and disadvantages, and there is still room for improvement. That is, in the door structure using the hinge described in (1), it is necessary to secure a space for opening and closing the door in front of the apparatus. On the other hand, since the door structure of (1) adopts the slide method, there is an advantage that the drawback can be solved. However, since the door structure needs to form the front opening of the device body itself in a curved shape, it is troublesome to manufacture, and there is a disadvantage that the front surface of the device body itself projects forward and becomes large. When the opening is opened, it is necessary to position the door above the opening,
Since the height of the device itself needs to be more than twice the height of the door,
The size of the device or the size of the opening is limited.
The door made of the flexible sheet has low heat insulation. Since a similar door also uses a plate-shaped member, there is a disadvantage that the heat insulating effect is low.

[0004] Therefore, the present invention has been made in view of the above-described conventional problems, and an object thereof is to combine a sheet type door with a door-like door.
An object of the present invention is to provide a door structure of an environmental test apparatus which has a relatively simple structure, has a large mechanical strength and a large heat insulating effect, and does not require an opening / closing space for opening a door in front of the apparatus body. Another object of the present invention is to provide a door structure of an environmental test apparatus in which a large heat insulating effect can be obtained in a sheet type door.

[0005]

In order to achieve the above-mentioned object, the present invention provides a slide cover for covering a front opening of an apparatus body.
The door is provided with a flexible and heat-resistant sheet, and is formed into a hollow body and filled with a heat insulating material.
And a plurality of door components arranged side by side on the surface of the sheet .

[0006]

The sheet has flexibility and slides by winding and rewinding to open and close the opening of the apparatus body. The strong seat of the door is increased by the door components. The insulation inside the door components
Cut off heat.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings. FIG. 1 is an external perspective view showing an embodiment of a door structure of an environmental test apparatus according to the present invention in a state where a door is partially wound up, FIG. 2 is a perspective view showing a part of a state in which the door is closed, 3 is a perspective view showing a part of the door in a cut-away manner. FIG. 4 is a perspective view showing a tension mechanism of the door. FIG. 5 is a cross-sectional view of a part of a door pressing mechanism for bringing the door into close contact with the apparatus main body when the opening is closed. FIG. 6 is a sectional view of the door pressing mechanism with the door opened. This embodiment shows an example in which the present invention is applied to a door structure of a test apparatus for measuring characteristics of electronic components as an environmental test apparatus. 1 and 2, a test apparatus indicated by reference numeral 1 as a whole includes a vertically long box-shaped apparatus main body 2 having an opening 3 on a front surface and a thermostat 4 incorporated therein. A door 5 that opens and closes the opening 3 in an airtight manner is provided on the front surface of the apparatus main body 2 so as to be slidable downward. Further, a winding mechanism 6 for opening and closing the door 5 by winding or rewinding is provided on the upper surface of the apparatus main body 2, and a tension mechanism 7 for applying a closing direction tension to the door 5 and a closing mechanism for closing the door 5 are provided on the front surface. A door pressing mechanism 8 that sometimes brings the door 5 into close contact with the front surface of the apparatus main body 2 is provided.

As shown in FIG. 3, the door 5 has a sheet 10 having flexibility and heat resistance, and a hollow rigid body provided on the surface of the sheet 10 at appropriate intervals in the longitudinal direction of the sheet 10. And a plurality of door components 11 composed of: The sheet 10 is formed of a material having flexibility and heat resistance such as carbonized organic fiber, glass wool, ceramic fiber, and the like, and its back surface is coated with aluminum foil to increase heat resistance. The door constituent member 11 is formed in a hollow body having a rectangular cross section by a synthetic resin, aluminum, or the like having excellent heat resistance, and the inside thereof forms a closed heat insulating space 12. Further, the closed heat insulating space 12 is filled with a heat insulating material 13 such as glass wool.

In this embodiment, an example is shown in which the door constituting member 11 is directly joined to the surface of the sheet 10. However, the door constituting member 11 may be joined and fixed via a suitable heat insulating member having flexibility. Of course it is good. Further, the door component 11 does not need to be attached over the entire length of the seat 10, and is provided only in the lower portion I that covers the opening 3 when closed as shown in FIG. 2, or as shown in FIG. Of the lower portion I that covers the opening 3 when closed, a plurality of door components 11 are juxtaposed only at a portion I1 that is wound up by the winding mechanism 6 when opened and bent by a guide roller 29 described later. Since the portion I2 is not bent at the time of winding, one door component 16 formed in a box shape may be attached.

Referring again to FIGS. 1 and 2, a pair of left and right frames 18 formed in an inverted L-shape in side view are provided on the front and upper surfaces of the apparatus main body 2 with the door 5 interposed therebetween. A pair of left and right guide members 1 for guiding and holding the side end of the door 5 is provided on the inner surface of the vertical portion 18a
9 is fixed. The guide member 19 has an L-shape in a plan view, and has a guide groove 20 for slidably guiding and holding the door 5 by its front plate 19a and the front surface of the apparatus main body 2. The guide member 19 is configured to be slid in the front-rear direction along the inner surface of the frame 18 by a door pressing mechanism 8 described later. This is because when the door 5 is opened and closed by winding or rewinding, the door 5 is slid smoothly and is brought into close contact with the front surface of the apparatus main body 2 when closed.

The winding mechanism 6 includes a winding drum 21 rotatably supported between rear ends of the pair of frames 18, and the upper end of the door 5 is connected to the winding drum 21. . The rear end side of the frame 18 extends rearward along the upper surface of the apparatus main body 2 to form a horizontal plate portion 18b.
A driven pulley 23 is fixed to one end of a drum shaft 22 of the winding drum 21. A drive motor 24 is mounted on the inner surface of one of the frames 18 in front of the driven pulley 23, and a tooth is provided between a driven pulley 27 fixed to an output shaft thereof and the driven pulley 23. A transmission belt 28 is stretched. Further, a rotatable guide roller 29 is provided between the pair of frames 18 in front of the drive motor 24. The guide roller 29 is arranged near the front end of the horizontal plate portion 18b of the frame 18 so that its front side peripheral surface substantially coincides with the front surface of the apparatus main body 2 or projects slightly forward. The door 5 fed from 21 is turned vertically downward along the front surface of the apparatus main body 2.

In FIGS. 1, 3 and 4, the tension mechanism 7 always exerts a constant retraction force (door return force) on the door 5, and the tension mechanism 7 is provided below the opening 3 on the front surface of the apparatus main body 2. It includes a pair of left and right cases 31 fixed to each other, and a constant load spring 32 that is incorporated inside each case 31 and applies a constant tension in the closing direction to the door 5 via a transmission wire 33.

The constant load spring 32 is formed of a mainspring, the inner end of which is fixedly wound around the peripheral surface of a rotatable first drum 34 disposed in the case 31, and the outer end thereof is formed. Similarly, it is fixed to the peripheral surface of the rotatable second drum 35 disposed in the case 31 so that the surface side is in close contact with the drum peripheral surface, opposite to the inner end side.
A pulley 351 is attached to the shaft end of the second drum 35, and the transmission wire 33 is wound around the pulley 351 by at least a length corresponding to the opening and closing movement length of the door 5. Then, the transmission wire 33 is led out of the case 31, is bent at a substantially right angle by a rotatable guide pulley 37 provided below the guide member 19 on the front surface of the apparatus main body 2, and is connected to the door 5 via a connection fitting 36. Are connected to one side of the lower end of the transmission wire 33, and these constitute a tension mechanism 7 of the transmission wire 33.

Similarly, another tension mechanism 7 is connected to the other lower end of the door 5. The tension mechanism 7 is adjusted so as to generate the same retraction force (door returning force) as the previous tension mechanism 7, and the left and right tension mechanisms 7 are used to adjust the door 5 fed out from the winding mechanism 6. An extension force is applied to the lower end. The constant load spring 32 of the tension mechanism 7 is conventionally well-known, and a commercially available product is used (for example, Conston (trade name) manufactured by Sanko Spring Co., Ltd.).

Now, it is assumed that the door 5 is wound up by the winding mechanism 6 in order to open the door 5. The transmission wire 33 wound around the pulley 351 of each tension mechanism 7 is pulled out in the direction of arrow a in FIG. For this reason,
The second drum 35 and the pulley 351 rotate integrally in the counterclockwise direction in FIG.
5 winds up. However, the constant load spring 32
Is always applied in the direction indicated by the arrow in FIG. 4, that is, the direction in which the first drum 34 is wound.
When the door 5 is opened by raising it, a constant back tension is applied to the door 5 being wound up and the door 5 is opened in an extended state. Conversely, when the door 5 is closed, the winding mechanism 6 draws out the door 5, but also at this time, the door 5 descends in an extended state due to the back tension by the tension mechanism 7.

In FIGS. 1, 5 and 6, the door pressing mechanism 8 includes a pair of guide members 19 movably disposed in the front-rear direction along the inner side surface of the vertical portion of each of the frames 18; It comprises a plurality of cams 40 for simultaneously moving the guide members 19 in the same direction, a cam drive motor 41 provided on the outer surface of the lower end of each frame 18 for rotating the cams 40 by a predetermined angle, and the like. A pair of upper and lower sliding members 44 are integrally protruded from the outer surface of the guide member 19. These sliding members 44 are slidably supported by long holes 45 formed in the frame 18 in the longitudinal direction. A metal fitting 46 having a U-shape in a plan view is fixed to the tip of the sliding member 44 with its open part facing the side of the apparatus body 2. The cam 40 is positioned inside the metal fitting 46. I have. The cam 40 has a disc shape and is eccentrically mounted on the cam shaft 47. The cam 40 has two points on its peripheral surface, that is, the peripheral surface portion a closest to the cam shaft 47, and the cam shaft has a phase difference of 180 °. A portion b farthest from 47 contacts the inner surface of the fitting 36. The upper and lower ends of the cam shaft 47 are rotatably supported by a pair of upper and lower bearing members 48 provided on the outer surface of the frame 18, and the lower end connects a coupling 49 to the output shaft of the cam drive motor 41. Are connected via When the door 5 is opened, the guide member 19 moves away from the front surface of the apparatus main body 2 by moving to the front side as shown in FIG. Then, as shown in FIG. 5, the door 5 is pressed against the front surface of the apparatus main body 2 with a predetermined pressing force. In addition, a packing 50 is provided around the opening 3 on the front surface of the apparatus main body 2 in order to secure the airtightness of the thermostatic bath 4. Also,
An elastic member 51 such as rubber is fixed to a contact surface of the guide member 19 with the door 5.

In the door structure having such a configuration,
FIGS. 2 and 5 show a state where the opening 3 of the apparatus main body 2 is completely closed by the door 5. In this state, the door 5 is pressed against the packing 50 by the door pressing mechanism 8, and closes the opening 3 so as to keep the airtight. To open the opening 3 from this state, first, the cam shafts 47 of the left and right door pressing mechanisms 8 are rotated by the driving of the cam driving motor 41, whereby the left and right guide members 19 are moved to the frame 18.
Move forward along. When the guide member 19 moves forward, the door 5 is separated from the packing 50 and the close contact state is released. FIG. 6 shows this state.

Next, when the motor 24 is driven to rotate the winding drum 21 in the winding direction, the door 5
9 and is wound on the winding drum 21 to open the opening 3. At this time, depending on the size of the apparatus main body 2 and the opening 3, a part of the lower end of the door 5 to which the door component 11 is attached may be wound up by the winding drum 21. As the door 5 gradually rises and is wound up,
Since the wire 33 is paid out, the constant load spring 32 (FIG. 4) is paid out from the first drum 34 and wound around the second drum 35.

When the opening 3 is opened and then closed again, the procedure is reversed. That is, when the winding drum 21 is rotated in the rewinding direction by driving the motor 24, the door 5 is fed out of the winding drum 21 and descends along the guide member 19. At this time, the constant load spring 32 of the tension mechanism 7 is rewound to the first drum 34 by the restoring force of the spring itself, and rewound the transmission wire 33.
The door 5 is fed out of the winding drum 21 by the drive of the motor 24 and the force of the constant load spring 32, and gradually covers the opening 3. When the door 5 is extended by a predetermined length to completely cover the opening 3, the motor 24 is stopped and the cam driving motor 41 is stopped.
Drives the cam 40 by half a turn to retreat the guide member 19 along the frame 18. Therefore, the door 5 is pressed against the packing 50 by the guide member 19 to close the opening 3 in an airtight state.

In the door structure of the environmental test apparatus having such a configuration, the door 5 is made up of a sheet 10 having flexibility and heat resistance and a hollow door component 11 having a closed heat insulating space 12. With this configuration, heat resistance can be improved as compared with a configuration in which a door that is slidable only by a sheet or a plurality of plate members is used (Japanese Patent Laid-Open No. 62-42749, Japanese Utility Model Laid-Open No. 3-38145). .

Further, the door constituting member 11 increases the strength of the door 5 itself, protects the sheet 10 and prevents the sheet 10 from being damaged.
Damage and the like can be prevented. Further, the door component 1
Since the inside of 1 is filled with the heat insulating material 13, the heat insulating effect is further enhanced, and it is possible to prevent the surface temperature of the door 5 itself from becoming abnormally high or cold.

Further, since the door 5 is slid by winding and rewinding by the winding mechanism 6, a door made of a rigid body is moved up and down along a guide member to be opened and closed (Japanese Patent Laid-Open No. 2-96635). Publication), it is possible to reduce the size of the device. The size of the opening 3 is the door 5
It is not limited by the structure.

Further, in the present invention, since the door 5 is urged in the closing direction by the tension mechanism 7, the door 5 is fed out by the rewinding by the winding mechanism 6, and the opening 3 is opened.
When closing the door, the door 5 can be slid smoothly without being stopped and becoming heavy or rising. Furthermore, since the door 5 is pressed against the front surface of the apparatus main body 2 by the door pressing mechanism 8 when the opening 3 is closed, the opening 3 can be reliably closed, and high airtightness is secured inside. Can be.

[0024]

As described above, the environmental test according to the present invention
The door structure of the test device is provided at the front opening of the device body
Use a slidable door with a flexible and heat-resistant
And a heat insulating material filled into the hollow body and
And a plurality of door components arranged side by side on the surface of the
Therefore, with a relatively simple configuration, the heat insulation effect is extremely large.
In addition, the heat resistance of the door itself can be improved. Also the door
The components increase the strength of the door and damage the seat
Etc. can be protected. Also, in front of the device body
Enough space to open doors or large equipment
Or the size of the opening is controlled by the door
Since no reduction is made, the size of the apparatus can be reduced.

[Brief description of the drawings]

FIG. 1 is an external perspective view of a door structure of an environmental test apparatus according to an embodiment of the present invention, in which a door is partially wound up.

FIG. 2 is a perspective view showing a part of a state where a door is closed in a cutaway manner.

FIG. 3 is a perspective view showing a part of the door in a cutaway manner.

FIG. 4 is a perspective view showing a door tension mechanism.

FIG. 5 is a sectional view of a part of a door pressing mechanism for bringing the door into close contact with the apparatus main body when the opening is closed.

FIG. 6 is a sectional view of the door pressing mechanism with the door opened.

FIG. 7 is a partially cutaway perspective view showing another embodiment of the door .

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Environmental test apparatus, 2 ... Device main body, 3 ... Opening part, 4 ... Constant temperature bath, 5 ... Door, 6 ... Winding mechanism, 7 ... Tension mechanism,
8 ... door pressing mechanism, 10 ... sheet, 11 ... door constituent member, 1
2 ... closed heat insulating space, 13 ... heat insulating material.

Continuation of front page (58) Fields investigated (Int.Cl. ⁶ , DB name) G01N 17/00-17/04 B01L 11/02 G01R 31/26 G01N 3/60

Claims (1)

(57) [Claims] 1. A slide cover for covering a front opening of an apparatus body.
The door is provided with a flexible and heat-resistant sheet, and is formed into a hollow body and filled with a heat insulating material.
A door structure for an environmental test device, comprising a plurality of door components arranged side by side on the surface of the sheet .