JP3172903B2 - Hinge driven by opening and closing by thermo element - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hinge driven to open and close by a reciprocating piston of a thermoelement. For example, a lid for opening and closing an opening is attached to the hinge.
When the ambient temperature is lower than a predetermined value, the lid is closed by the biasing force of a spring provided on a hinge, and when the ambient temperature is higher than a predetermined value, the lid can be opened by advancing the piston of the thermoelement. Is to do so.

[0002]

2. Description of the Related Art Conventionally, there has been a hinge that is biased by a spring in a direction to always close or open, but when the ambient temperature of the hinge exceeds a predetermined value, the hinge is rotated against the biasing force. There was nothing.

[0003]

When a lid is attached to a hinge biased by a spring in a direction to always close or open, the closed lid is opened when the temperature is higher than a desired temperature.
Alternatively, in order to close the opened lid at a temperature lower than a desired temperature, a motor or an electromagnetic plunger is used as an opening / closing means of the lid, and when the lid is opened or the lid is closed, the motor or the electromagnetic plunger is closed. Had to be energized. The present invention relates to a thermo-element capable of opening and closing a closed lid when the temperature is higher than a desired temperature or closing the opened lid when the temperature is lower than a desired temperature without using the motor or the electromagnetic plunger. It is an object to provide a hinge to be used.

[0004]

In order to solve the above-mentioned problems, a hinge which is driven to open and close by a thermoelement of the present invention is a hinge 1 urged by a spring 2 in a normally closing direction.
A thermoelement 3 having a piston 3a that moves forward and backward by the expansion and contraction action of a wax (thermal expansion body) 3b that expands and contracts due to a temperature change is attached to the one piece 1a of the thermoelement 3.
a 'is brought into contact with the other piece 1b of the hinge 1, and the piston 3
a The inclined portion 1c inclined to the opposite side of the installation side is
The other of the hinges 1 with which the piston 3a of the mo element 3 contacts
It is characterized by being formed at the contact portion of the piece 1b .

[0005]

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an embodiment of a hinge driven by a thermoelement according to the present invention. 1 (a) is a plan view of the hinge of the present invention, FIG. 1 (b) is a front view of the same, FIG. 1 (c) is a left side view of the same, and FIG. FIG. 3 is an enlarged view of a portion where the piston of the thermoelement abuts on one of the pieces, and FIG. 3 is a view showing a rotating state of the hinge.

In these figures, reference numeral 1 denotes a hinge which is urged by a spring 2 in a constantly closing direction.
a, a thermoelement 3 having a piston 3a which moves forward and backward by the expansion and contraction action of the wax which expands and contracts due to a temperature change, and the tip 3a 'of the piston 3a which moves forward and backward of the thermoelement 3 is connected to the hinge 1
And the other piece 1b. An inclined portion 1c is formed in the abutting portion of the other piece 1b of the hinge 1 with which the tip 3a 'of the piston 3a of the thermoelement 3 contacts, in the forward direction of the piston 3a. 1d is the hinge 1
Is a support shaft in which the one piece 1a and the other piece 1b are rotatably assembled.

FIG. 4 is a view showing the thermoelement 3 in detail, wherein 3c is a case containing a wax (thermal expansion body) 3b, 3d is a diaphragm for enclosing the wax 3b in a case 3c, and 3e is a diaphragm. A guide cylinder connected to the opening of the case 3c via a diaphragm 3d. The guide 3d sequentially includes a fluid 3f, a rubber piston 3g, a backup plate 3h, and a piston 3a from the side of the diaphragm 3d in the guide cylinder 3e. And are arranged.

The hinge which is opened and closed by the thermo-element is constructed as described above. As an example of its use, one of the hinges 1 to which the thermo-element 3 is mounted is attached to a fixed part. When the lid that opens and closes the opening is attached to the other piece 1b, when the ambient temperature of the hinge 1 exceeds a predetermined value, the wax 3b built in the thermoelement 3 expands, the piston 3a moves forward, and the other of the hinge 1 The piece 1b is pushed and the lid attached to the other piece 1b is opened. When the ambient temperature of the hinge 1 falls below a predetermined value, the wax 3b contracts and the forward force of the piston 3a disappears, and the urging force of the spring 2 of the hinge 1 causes
Since the other piece 1b of the hinge 1 is turned to the one piece 1a side, the hinge 1 is operated to close the lid attached to the other piece 1b.

An inclined portion 1c in the forward direction of the piston 3a is provided on the contact portion of the other piece 1b of the hinge 1 with which the tip 3a 'of the piston 3a of the thermoelement 3 contacts.
When the piston 3a starts pushing the inclined portion 1c of the other piece 1b of the hinge 1 as shown by the solid line in FIG. 3, the direction of the force acting on the piston 3a depends on the axis of the piston 3a. The direction is orthogonal to the direction and axis.
Even if a force in the direction perpendicular to this axis acts on the piston 3a, the influence of the unbalanced load is small because the amount of advance of the piston 3a is still small. Also, as shown by the two-dot chain line, the piston 3
When "a" moves forward greatly, when a force in a direction perpendicular to the axis of the piston 3a acts, the eccentric load increases and eccentric friction occurs. In this embodiment, however, the abutting portion C of the inclined portion 1c is used. Is pushed by the piston 3a, and the direction of the force acting on the piston 3a is only in the axial direction, and no uneven load is applied to the piston 3a, so that there is no uneven friction. Also, even if the contact position of the tip 3a 'of the piston 3a of the thermoelement 3 with the other piece 1b of the hinge 1 changes with time, the change of the contact position changes from the point A to the point B. That is, the hinge 1d tends to change in the direction of the support shaft 1d.
The opening angle of the other piece 1b is not reduced.

[0011]

According to the first aspect of the present invention, the one piece of the hinge urged by the spring in the always closing direction is moved forward and backward by the expansion and contraction action of the wax which expands and contracts due to the temperature change. A thermo element having a piston to be mounted is attached, and the hinge is driven to be opened and closed by a thermo element configured by bringing the tip of the piston of the thermo element into contact with the other piece of the hinge, so that when the ambient temperature of the hinge exceeds a predetermined value. The wax contained in the thermoelement expands and the piston moves forward,
The other side of the hinge is pushed open against the biasing force of the spring which is constantly biased in the closing direction. Further, when the ambient temperature of the hinge becomes equal to or lower than a predetermined value, the wax contracts and the forward force of the piston is lost, and the other end of the hinge is rotated to one side by the biasing force of the spring. As an example of use, when one of the hinges to which the thermoelement is attached is attached to the fixed portion, and the other is fitted with a lid that opens and closes the opening, the lid closes the opening when the ambient temperature of the hinge becomes a predetermined value or more. When the ambient temperature around the hinge falls below a predetermined value, the lid that has opened the opening can be closed.

According to the second aspect of the present invention, in other words, by forming an inclined portion in the forward direction of the piston at the contact portion of the other piece of the hinge with which the piston of the thermoelement contacts. When the piston moves forward greatly, when a force acting in a direction perpendicular to the axis of the piston acts, the eccentric load increases and eccentric friction occurs, but the piston pushes the contact portion of the inclined portion, and the piston The force acting on the piston is only in the axial direction, and there is no uneven load on the piston, so there is no uneven friction. Further, even if the contact position of the tip of the piston of the thermoelement with the other piece of the hinge changes over time, the change of the contact position tends to change in the direction of the support shaft. Thus, the opening angle of the other piece of the hinge is not reduced.

[Brief description of the drawings]

FIG. 1 is a view of a hinge driven to be opened and closed by a thermoelement according to the present invention as viewed from each direction.

FIG. 2 is an enlarged view of a portion where a piston of a thermoelement abuts on the other piece of a hinge driven to open and close by the thermoelement of the present invention.

FIG. 3 is a diagram showing a pivoted state of a hinge;

FIG. 4 is a diagram showing a thermoelement in detail.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hinge 1a One side 1b The other side 1c Inclined part 1d Support shaft 2 Spring 3 Thermoelement 3a Piston 3a 'Tip 3b Wax 3c Case 3d Diaphragm 3e Guide cylinder 3f Fluid 3g Rubber piston 3h Backup plate

Claims (1)

(57) [Claims] 1. A piston (3a) which moves forward and backward by an expansion / contraction action of wax which expands / contracts due to a temperature change, to one end (1a) of a hinge (1) which is urged by a spring (2) in a constantly closing direction. ) Is attached, and the tip (3a ') of the piston (3a) of the thermoelement (3) is brought into contact with the other piece (1b) of the hinge (1 ) to install the piston (3a). Side anti
The inclined portion (1c) inclined to the opposite side is connected to the thermoelectric element.
Of the hinge (1) with which the piston (3a) of the
A hinge driven to open and close by a thermo element, wherein the hinge is formed at a contact portion of the other piece (1b) .