JP2007010218A - Hinge with thermo-actuator and ventilation device with thermo-actuator using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To miniaturize a hinge with a thermo-actuator used in a ventilation device opening and closing a ventilation port, with a simple structure, and to rotate the thermo-actuator with small motion. <P>SOLUTION: This hinge 10 with the thermo-actuator comprises: two sheets of hinge members 12, 13 relatively rotatably journaled to a spindle 11; a spring means 14 for giving rotating habit to one direction to the hinge members; and the thermo-actuator 20 operated in accompany with temperature change for rotating the hinge members against energizing force of the spring means. The thermo-actuator is provided with: a rod member 34 linearly moved in accompany with advancing and retracting motion of the thermo-actuator; and a lever 41 engaged with the rod member 34 for converting the linear motion into the rotating motion, and having hinge engagement portions 44, 44 for rotating two sheets of hinge members against the energizing force of the spring means. The hinge engagement portions of the lever are engaged with engaged faces 17, 18 formed on basic end side portions of the two sheets of hinge members to rotate the hinge members in the other direction. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  TECHNICAL FIELD The present invention relates to a hinge with a thermoactuator that relatively rotates two hinge members by advancing and retreating a thermoactuator that operates in response to a temperature change. The present invention relates to a hinge with a thermoactuator suitable for use in a drive unit of a ventilator for opening and closing depending on temperature and the like, and a ventilator with a thermoactuator using the hinge.

  For example, in a hinge used to attach a lid that opens and closes according to a temperature change, when the ambient temperature falls below a predetermined value, the lid is closed by the biasing force of a spring provided on the hinge, and the ambient temperature rises above a prescribed value. Then, the thing of the structure where the said lid | cover was opened by advance of the piston of a thermoactuator is known (for example, refer patent document 1).

  According to such a conventional hinge with a thermoactuator, the lid is opened and closed by the back and forth movement of the piston of the thermoactuator accompanying a temperature change. For example, what is adopted for a ventilation device of a building is known.

By the way, in the building ventilator described above, it is desired that the opening degree of the ventilation port can be arbitrarily adjusted, and measures against fire are also required.
For example, a fire damper with a structure in which a valve body is connected to a vent hole on the ceiling of a building by a thermal fuse is installed. When an abnormal temperature is detected, the thermal fuse is blown and the valve body is released to vent the vent hole. Is fully closed to prevent the spread of fire during a fire (for example, see Patent Document 2).

  In addition, a damper is rotatably provided in the duct, and is configured to be locked by a shape memory alloy member. When an abnormal temperature is detected, the length of the shape memory alloy is shortened, and the lock that holds the damper is There is also a case where the duct comes off and the duct is fully closed (see, for example, Patent Document 3).

Japanese Patent No. 3172903 Japanese Utility Model Publication No. 64-9664 Japanese Utility Model Publication No. 61-34044

  In the hinge with a thermoactuator of Patent Document 1 described above, the larger the opening, the larger the space occupied by the rotating hinge member of the pair of hinge members. Therefore, a hinge that opens only as much as necessary to achieve space saving is desired, and for this purpose, a structure having a function of regulating the rotation angle (opening / closing amount) is also known. However, it was not easily applicable because of the relationship with the thermoactuator assembly and the movement of the piston.

Conventionally, if this type of hinge is provided with a function of restricting the rotation angle, it is necessary to pay attention to the thermo actuator built-in structure. That is, it is necessary to add an overlift prevention mechanism that prevents the hinge member from operating more than necessary when the thermoactuator pushes the piston beyond a predetermined amount. This is necessary in order to prevent damage to each component constituting the hinge and a lid body to which the hinge is attached.
Furthermore, the thermoactuator pushes out the piston as the temperature rises, but if there is no overlift prevention function, the movement of the piston is restricted by restricting rotation, etc., thereby generating excessive pressure inside the thermoactuator, This may cause breakage of the piston constituting the thermoactuator and damage to the diaphragm, leading to breakage of the so-called thermoactuator.

  Moreover, according to the hinge with a thermoactuator described above, there is a problem in taking the above-mentioned fire prevention measures even if the above-described problems are eliminated. That is, as described in Patent Document 2 and Patent Document 3, if a dedicated fire prevention structure using a thermal fuse or a shape memory alloy is provided separately, the number of components increases, the structure becomes complicated, and the cost increases. become.

  The present invention has been made in view of such circumstances, and the hinge with a thermoactuator used for a ventilator for opening and closing a ventilation opening is configured in a compact structure with a compact structure, and can be rotated with a small movement of the thermoactuator. An object is to obtain a hinge with a thermoactuator configured to be operable, and a ventilator with a thermoactuator using the hinge.

  Furthermore, the present invention is capable of rotating the hinge member in a required state, and has a function of adjusting the amount of rotation with an arbitrary characteristic, an overlift prevention function, and a fire prevention function against fire. The hinge with thermoactuator has a simple structure that can ensure mechanical strength and improve durability by adopting a structure that absorbs stress applied to each part and a ventilation device with a thermoactuator using the same For the purpose.

  In order to meet such an object, the hinge with a thermoactuator according to the present invention (the invention according to claim 1) includes two hinge members that are rotatably supported by a support shaft, and the support shaft. A spring means provided on the hinge member for imparting a turning behavior in one direction to the hinge member; and a thermoactuator for operating the hinge member to rotate against a biasing force of the spring means by operating according to a temperature change; A hinge member with a thermoactuator comprising: a rod member that performs a linear motion as the thermoactuator moves forward and backward; and the two hinge members that engage with the rod member to convert the linear motion into a rotational motion. And a lever having a hinge engaging portion that rotates in a direction approaching each other against the urging force of the spring means, and the hinge engaging portion of the lever includes two hinge members. Characterized in that it is configured to engage the engagement surface formed on the end side.

  The hinge with a thermoactuator according to the present invention (the invention described in claim 2) is the hinge according to claim 1, wherein an engagement groove extending in a direction perpendicular to the linear motion is formed in a part of the rod member. An arc-shaped cam groove is formed on the corresponding fixed portion side, and an engagement pin provided at an eccentric position of the lever is provided through the engagement groove and the cam groove so that the straight line of the rod member is formed. The movement is configured to be converted into a rotational movement of the lever.

  The hinge with a thermoactuator according to the present invention (the invention according to claim 3) is the hinge engaging part of the lever according to claim 1 or 2, wherein the hinge engaging portion of the lever moves the two hinge members as the ambient temperature rises. The two hinge members are moved away from the engaged surface when the ambient temperature becomes a predetermined temperature or more, and the two hinge members are moved by the spring means. It is comprised so that it may be rotated by the urging | biasing force of.

  The hinge with a thermoactuator according to the present invention (the invention according to the fourth aspect) is the hinge according to any one of the first to third aspects, wherein the thermoactuator is a thermal expansion or thermal contraction of a thermal expansion body accompanying a temperature change. It is a thermo element having a piston that moves forward and backward by.

  A ventilator with a thermoactuator according to the present invention (invention according to claim 5) uses the hinge with thermoactuator according to any one of claims 1 to 4, wherein the two pieces The hinge member is used as a member for opening and closing the ventilation port, and is configured to close the ventilation port while being rotated by the urging force of the spring means.

  The ventilator with a thermoactuator according to the present invention (invention of claim 6) is the ventilator with a thermoactuator according to claim 5, wherein a step is formed on the inner peripheral surface of the ventilation port, and the outer peripheral edge of the two hinge members is in surface contact. It is characterized by having constituted so.

According to the present invention, when the thermoactuator operates and the rod member moves linearly with a change in ambient temperature, the lever engaged via the engagement pin moves along the cam surface of the arcuate cam groove. When the hinge engaging portion provided on the lever is engaged with the engaged surface of the hinge member, the hinge member is rotated against the biasing force of the spring means. .
When the hinge member is, for example, a member that opens and closes the ventilation port, the opening degree can be arbitrarily set by selecting the cam surface shape of the arcuate cam groove with which the engagement pin engages. Therefore, by appropriately setting the length of the engagement pin and the arc cam groove of the lever, it is possible to arbitrarily control the opening / closing operation of the hinge member via the engagement pin, and the rotation of the hinge member. The operation (opening adjustment operation) can be freely set and adjusted.

  Further, according to the present invention, when the ambient temperature is equal to or higher than a predetermined temperature, for example, higher than a normal opening temperature (can be set to an arbitrary temperature), the engagement pin and the cam of the arc cam groove Depending on the engagement state with the surface, the engagement state between the hinge engaging portion of the lever and the engaged surface of the hinge member can be released, so that the hinge member is rotated by the biasing force of the spring means or the like. It can be moved. Therefore, the lift of the rod member accompanying the operation of the thermoactuator allows the hinge member to be operated from the closing operation to the opening operation and further to the closing operation. For example, when the opening / closing of the ventilation port is controlled to change according to the ambient temperature change It is suitable for.

  And according to such this invention, when a hinge with a thermoactuator is used for a ventilator with a thermoactuator, it can be configured to close the ventilating port when the outside air temperature or the room temperature is low and it is cold and open it when it is hot. It is.

As described above, according to the hinge with a thermoactuator according to the present invention, the hinge member is moved by the rotation operation obtained by converting the rod member and the lever by the operation of the thermoactuator according to the change in the ambient temperature. Since it is configured to rotate, the hinge member can be opened and closed with a small lift amount, and the structure is simple, the overall size can be reduced, and the cost can be reduced. There is an excellent effect.
In particular, according to the present invention, when a thermo element having a small lift amount is used as a thermo actuator, the effect can be exhibited.

In addition, according to the present invention, the two hinge members constituting the hinge with the thermoactuator described above are used as butterfly-type members that open and close the ventilation port, whereby the ventilation device can be reduced in size and size. It is possible to achieve various excellent effects, such as being able to reliably open and close the ventilation opening with a small lift amount of the thermoactuator.
Furthermore, since the outer peripheral edge of the hinge member is configured to contact the stepped portion provided on the inner peripheral surface of the ventilation port by surface contact, there is an advantage that the airtightness of the ventilation port can be ensured. .

  Further, according to the present invention, the hinge member is configured to be rotated by a lever that rotates with the linear movement of the rod member, and the hinge member is further moved from the closed state to the open state and further to the closed state. Therefore, for example, there is an advantage that an effect can be exhibited in configuring a ventilator having a fire prevention function.

  FIG. 1 to FIG. 8 show an embodiment of a hinge with a thermoactuator according to the present invention. In this embodiment, a ventilator with a thermoactuator is provided between a room interior and an outdoor room for ventilation. A case where two hinge members are used as butterfly valve type opening and closing blades for opening and closing the ventilation port is shown.

In these drawings, a ventilator with a thermoactuator indicated by reference numeral 1 includes a cylindrical member 2, and the inside of the cylindrical member 2 forms a ventilation port 3. On the inner surface of the cylindrical member 2, an annular step portion 4 having a contact surface 4 a with which the outer peripheral edges of two hinge members 12 and 13 constituting a hinge 10 with a thermoactuator described later contact in a surface contact state is formed. Has been.
The cylindrical member 2 is fixed from the outdoor side or the indoor side so as to close the opening formed in the wall portion of the building (not shown) (window sash, wall, etc.). The ventilation port 3 is configured to be a passage for selectively communicating and blocking the outdoor side and the indoor side.

  As shown in FIGS. 1 to 3, the hinge with a thermoactuator 10 is provided with two hinge members 12 and 13 that are pivotally supported by a support shaft 11 so as to be relatively rotatable. . The support shaft 11 is disposed across the diameter direction in the cylindrical member 2, and has a butterfly valve type structure that opens and closes the ventilation port 3 when the hinge members 12, 13 rotate. .

A coil spring 14 is wound around the support shaft 11, and a biasing force is applied so that the hinge members 12 and 13 are normally brought into contact with the contact surface 4a of the annular step 4 by surface contact. Is configured to give. In the figure, reference numerals 12a and 13a denote latching portions for latching the end of the coil spring 14.
As a result, the two hinge members 12 and 13 are normally operated by closing the ventilation port 3 by the biasing force of the coil spring 14, and a thermoactuator (thermoelement 31) described later changes, for example, rises. By doing so, as shown in FIGS. 2, 5, and 7, the closed state is changed to the open state.

  A ventilation port drive unit including a thermoactuator generally indicated by reference numeral 20 is incorporated and arranged in a portion close to the hinge 10 inside the cylindrical member 2. As shown in FIGS. 1 to 4 and the like, the ventilation port driving unit 20 includes a frame body portion 21 in which a thermo element 31 and the like described later are incorporated, and a holder 22 that has a substantially inverted L shape in side view. .

  As shown in FIGS. 1, 3, 4, and the like, the frame body portion 21 and the holder 22 incorporate a thermo element 31 that constitutes a thermo actuator. That is, a thermo element 31 is disposed in the frame body 21 in a state of being interposed between a pair of coil springs 32 and 33, and the front end side of a piston rod 31 b that protrudes forward and backward from the thermo element 31. The rod member 34 is disposed on the side.

  Here, as is well known, the thermo element 31 has a thermal expansion body such as wax that expands and contracts under the influence of temperature, and the rod member is moved by the movement of the piston that is advanced and retracted by expansion or contraction of the thermal expansion body. 34 is configured to move forward and backward. In the figure, reference numeral 31a denotes a heat sensitive part in which the thermal expansion body is enclosed.

  Of the coil springs, the coil spring 33 is a return spring of the thermo element 31. The coil spring 32 is an overlift absorbing spring for absorbing movement when the thermo-element 31 is lifted to an allowable amount or more, and a symbol 32a is a collar serving as a spring washer.

  The above-described members are incorporated and arranged in the frame body portion 21, and the rod member 34 is arranged facing the upper space of the holder 22 so as to move forward and backward in FIG. In the figure, reference numeral 23 denotes a cap member that holds the upper end portion of the rod member 34 so as to be movable up and down, and is assembled to the upper end portion of the holder 22.

  Here, the frame body portion 21, the holder 22, the cap member 23, and the like are arranged along the diameter direction in the cylindrical member 2 in an assembled state. In this case, the piston rod 31 b and the rod member 22 of the thermo element 31 are arranged so as to linearly move in a direction parallel to the support shaft 11 of the hinge members 12 and 13.

  Reference numeral 41 in the figure denotes a lever that is pivotally supported in a space formed at the upper end of the holder 22 so as to be pivotable. As apparent from FIGS. The moving shaft portion 42 is pivotally supported in a shaft hole (not shown) on the holder 22 side.

  The lever 41 engages with the rod member 34 to convert the linear motion into a rotational motion, and rotates the two hinge members 12 and 13 in a direction approaching each other against the biasing force of the coil spring 14. Hinge engaging portions 44, 44 to be moved are provided. The hinge engaging portions 44 and 44 of the lever 41 are configured to engage with engaged surfaces 17 and 18 formed on the base end side portions of the two hinge members 12 and 13. The engaging surfaces that engage with the engaged surfaces 17 and 18 of the hinge members 12 and 13 are formed as surfaces having a required inclination angle, as shown in FIGS. The rotation angle of the hinge members 12 and 13 is controlled by the engagement angle of the engagement surface with the engaged surfaces 17 and 18.

  Here, an engagement groove 35 extending in a direction orthogonal to the linearly moving direction is formed in a part of the rod member 34. On the other hand, an arcuate cam groove 25 is formed in the fixed-side holder 22 corresponding thereto. Then, by providing the engaging pin 36 provided at an eccentric position of the lever 41 through the engaging groove 35 and the cam groove 25, these members are engaged, and the straight line of the rod member 34 is obtained. The movement is converted into a rotational movement of the lever 41. In FIG. 7, reference numeral 43 denotes a hole for the engaging pin 36.

  According to the above engagement structure, when the rod member 34 moves back and forth, the engagement pin 36 is moved along the cam surface of the arcuate cam groove 25 provided in the holder 22, and as a result, the lever 41 rotates. It will be done. The engaging groove 35 of the rod member 34 is formed with a length that allows the movement of the engaging pin 36 that moves in the arcuate cam groove 25.

  As shown in FIGS. 1, 2, 3, etc., the engaging surfaces of the hinge engaging portions 44, 44 of the lever 41 are formed to extend in parallel to the direction of the hinge 10 and have two hinges at the tip. It is comprised so that it may selectively engage with the to-be-engaged surfaces 17 and 18 formed in the base end part side surface of the members 12 and 13. FIG. That is, as shown in FIGS. 3, 5, and 7, when the lever 41 is rotated as the ambient temperature rises, the two hinge members 12, 13 are resisted against the biasing force of the coil spring 14. The two hinge members 12 and 13 are separated from the engaged surfaces 17 and 18 by the urging force of the coil spring 14 when the ambient temperature exceeds a predetermined temperature. It is designed to rotate.

  In other words, when the ambient temperature is low, the hinge engaging portions 44 and 44 of the lever 41 are in the non-engagement positions separated from the engaged surfaces 17 and 18, as shown in FIGS. At this time, the hinge members 12 and 13 are opened by the urging force of the coil spring 14, and are in a closed state in which the outer peripheral edge is in surface contact with the contact surface 4 a of the annular step portion 4 and is kept airtight. Yes.

  When the ambient temperature rises from the above state, as shown by the arrow in FIG. 3 (b), the lever 41 is rotated, and the hinge engaging portions 44, 44 are engaged with the hinge members 12, 13. The hinge members 12 and 13 are engaged with the engagement surfaces 17 and 18 and rotated in a direction approaching each other. Here, the rotation angle (opening operation angle) of the hinge members 12 and 13 is controlled by the angle of the engaging surfaces of the hinge engaging portions 44 and 44 engaged with the engaged surfaces 17 and 18. 5 and 6 show an open state in which the hinge members 12 and 13 are most opened.

  When the ambient temperature further rises, the lever 41 is further rotated and rotated to a position where it is disengaged from the engaged surfaces 17 and 18, as shown in FIGS. 7 and 8. At this time, the hinge members 12 and 13 are The closed state is restored again by the biasing force of the coil spring 14. Note that the amount of overlift when the ambient temperature rises above is absorbed by the overlift absorbing spring 32. Needless to say, if the ambient temperature decreases, the lever 41 rotates by the action of the return spring 33 so as to return to the original state.

  In the above configuration, the holder 22 is assembled at a predetermined position in the ventilation port 3 with the thermo element 31, the rod member 34, the coil springs 32 and 33, and the lever 41 and the like installed therein, and the ventilation drive unit 20 is installed. When the hinge members 12 and 13 are pivotally supported by the support shaft 11 and are brought into contact with the contact surface 4a of the annular step portion 4 by the urging force of the coil spring 14, the closed state shown in FIGS. Become.

  In this closed state, when the thermal expansion body of the thermo element 31 facing the outdoor outside air temperature expands due to the temperature rise of the outside air temperature and pushes the piston rod 31b in a protruding direction, the rod member 34 becomes the anti-thermo element. Move to the side. Then, the engagement pin 36 is moved along the cam surface of the arcuate cam groove 25 of the holder 22, and the linear motion is converted into a rotational motion, so that the lever 41 rotates. As a result, as shown in FIGS. 5 and 6, the hinge engaging portions 44, 44 of the lever 41 are engaged with the engaged surfaces 17, 18 of the hinge members 12, 13, and this is attached to the coil spring 14. As a result, the hinge members 12 and 13 are opened.

  Furthermore, when the outside air temperature rises and the thermal expansion body expands and the piston rod 31b is pushed beyond the open state of the hinge members 12 and 13, the lever 41 is further rotated to the position shown in FIGS. At this time, the hinge engaging portions 44, 44 are disengaged from the engaged surfaces 17, 18, and the hinge members 12, 13 are urged by the coil spring 14 so that the outer peripheral edge abuts against the contact surface 4a. Return to the closed state.

  As in this embodiment, when the temperature is equal to or higher than a predetermined temperature, the engagement of the hinge members 12 and 13 of the hinge engaging portions 44 and 44 of the lever 41 with the engaged surfaces 17 and 18 is released, and the hinge is released. In the configuration in which the members 12 and 13 are closed, it is possible to cope with an emergency such as a fire. That is, the thermo element 31 senses an abnormal temperature, the rod member 34 is moved by the movement of the piston rod 31b, and reaches the position where the hinge engaging portions 44, 44 are disengaged from the engaged surfaces 17, 18 and does not contact. If it will be in the state, the said ventilation port 3 will be obstruct | occluded completely, and it is comprised so that the fire prevention function at the time of a fire can be exhibited. This is because when the ventilation opening 3 is closed, the passage of the flame can be blocked to prevent the spread of fire.

  Here, in this embodiment, the cam surface of the arcuate cam groove 25 described above controls the pivoting operation for opening and closing the hinge members 12 and 13 by the movement of the thermo-element 31, and can be freely rotated. It is good to comprise so that dynamic operation amount can be controlled. In short, the length of the cam surface shape with which the engagement pin 36 of the arcuate cam surface 25 is engaged may be arbitrarily selected and formed.

  According to the ventilator 1 with a thermoactuator having the above-described configuration, the vent opening 3 can be closed when the outside air temperature is low and it is cold, and can be opened when it is hot.

Note that the present invention is not limited to the structure described in the above-described embodiment, and it goes without saying that the shape and structure of each part can be appropriately modified and changed. For example, it is needless to say that the shapes of the hinge members 11 and 12 constituting the hinge 10 can be appropriately modified.
Further, in the above-described embodiment, by opening the piston rod 31b of the thermo element 31 once and obtaining the operation from the closing operation to the opening operation and further the closing operation, for example, the opening and closing of the ventilation opening and closing is performed by changing the ambient temperature However, the present invention is not limited to this, and it is needless to say that an operation such as an opening operation, a closing operation, and an opening operation may be performed by appropriately selecting the length of the cam surface shape.

  Further, the shape of the cam surface of the arcuate cam groove 25 with which the engaging pin 36 is engaged is not limited to that described in the above embodiment, and may be appropriately selected according to the field or part used. Can do.

  In the above-described embodiment, the piston rod 31b of the thermo element 31 for opening and closing the hinge members 12 and 13 and the rod portion 34 that linearly moves along with the piston rod 31b are used as the support shaft 11 of the hinge members 12 and 13. Although the case where it arrange | positioned in parallel was demonstrated, this invention is not limited to this, For example, along the inner wall of the cylindrical member 2, you may extend and arrange in the direction substantially orthogonal to the spindle 11. In short, any configuration may be used as long as the linear motion of the thermoactuator is converted into a rotational motion and can be rotated so that the hinge members 12 and 13 are opened and closed.

  Further, in the hinge 10 with a thermoactuator according to the present invention, when a heating element such as a PTC heater is provided in the vicinity of the temperature sensing portion 31a of the thermoelement 31 provided as the thermoactuator, the opening / closing control of the hinge members 12 and 13 is performed. Can be performed in combination with the ambient temperature. That is, if this heating element can be controlled by using a controller provided in the vicinity of the ventilation device 1 or a controller operated remotely from the room, the opening / closing control of the ventilation port is used in combination with the ambient temperature. Can be done arbitrarily. The heating element may be an electric heater. For example, a nichrome wire may be wound, a PTC heater may be attached at an appropriate position, or a current is passed. It is also possible to use a shape memory alloy that generates heat by itself.

  Moreover, although the case where the hinge 10 with a thermoactuator 10 according to the present invention was adopted in the ventilation device 1 for house equipment was described in the above-described embodiment, the present invention is not limited to this, and the lid opening / closing device in various fields. Needless to say, it can be applied to and hinges.

Furthermore, although the thermo element 31 was illustrated as a thermo actuator in embodiment mentioned above, it cannot be overemphasized that it may be a thermo actuator formed with not only this but a shape memory alloy etc.
In the above-described embodiment, as a means for converting the linear motion of the rod member 34 into the rotational motion of the lever 41, the engagement structure using the arc-shaped cam groove 25, the engagement groove 35, the engagement pin 36, and the like. However, the present invention is not limited to this, and a conversion means employing a so-called rack and pinion mechanism may be used.

It is a vertical side view which shows one Embodiment at the time of applying the hinge with a thermo actuator which concerns on this invention to the ventilator with a thermo actuator. It is a cross-sectional side view of FIG. (A), (b) is the schematic perspective view which shows the external appearance of the ventilator with a thermoactuator of FIG. 1, and the perspective view of the principal part structure. It is a schematic exploded view for demonstrating the member which comprises the drive part of the hinge with a thermoactuator of FIG. It is a cross-sectional side view corresponding to FIG. 2 for demonstrating a motion of the ventilator with a thermoactuator when ambient temperature rises. It is a perspective view of the principal part structure corresponding to FIG.3 (b) which shows the external appearance of the ventilator with a thermoactuator when ambient temperature rises. FIG. 6 is a cross-sectional side view corresponding to FIGS. 2 and 5 for explaining the movement of the ventilator with a thermoactuator when the ambient temperature further increases. It is a perspective view of the principal part composition corresponding to Drawing 3 (b) and Drawing 6 showing the appearance of the ventilator with a thermoactuator when ambient temperature further rises.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Ventilator with a thermoactuator, 2 ... Cylindrical member, 3 ... Ventilation port, 4 ... Annular step, 4a ... Contact surface, 10 ... Hinge with thermoactuator, 11 ... Support shaft, 12, 13 ... Hinge member, DESCRIPTION OF SYMBOLS 14 ... Coil spring (spring means) 17, 18 ... Engagement surface, 20 ... Ventilation port drive part containing thermoactuator, 21 ... Frame body part, 22 ... Holder, 23 ... Cap member, 25 ... Arc-shaped cam groove 31 ... Thermo element (thermoactuator) 32, 33 ... Coil spring, 34 ... Rod member, 35 ... Engagement groove, 36 ... Engagement pin, 41 ... Lever, 42 ... Support shaft, 44 ... Hinge engagement part .

Claims (6)

Two hinge members that are rotatably supported by a support shaft, spring means that is provided on the support shaft and gives the hinge member a turning behavior in one direction, and operates according to a temperature change In a hinge with a thermoactuator comprising a thermoactuator that rotates the hinge member against the urging force of the spring means.
A rod member that performs a linear motion in accordance with the advancing and retreating operation of the thermoactuator;
A lever having a hinge engaging portion that engages with the rod member to convert the linear motion into a rotational motion and rotates the two hinge members in a direction approaching each other against the biasing force of the spring means. And
A hinge with a thermoactuator, wherein the hinge engaging portion of the lever is configured to engage with an engaged surface formed on the side of the base end of the two hinge members. The hinge with a thermoactuator according to claim 1,
An engagement groove extending in a direction perpendicular to the linear motion is formed in a part of the rod member,
While forming an arc-shaped cam groove on the fixed part side corresponding to this,
An engagement pin provided at an eccentric position of the lever is provided to penetrate through the engagement groove and the cam groove,
A hinge with a thermoactuator, wherein the linear motion of the rod member is converted into a rotational motion of a lever. The hinge with a thermoactuator according to claim 1 or 2,
The hinge engaging portion of the lever rotates the two hinge members in a direction to approach each other against the urging force of the spring means as the ambient temperature rises, and the ambient temperature exceeds a predetermined temperature. The hinge with thermo-actuator is configured so that the two hinge members are rotated by the urging force of the spring means when the two hinge members are detached from the engaged surface. The hinge with a thermoactuator according to any one of claims 1 to 3,
The hinge with thermo-actuator, wherein the thermo-actuator is a thermo-element having a piston that moves forward and backward by thermal expansion and thermal contraction of a thermal expansion body accompanying a temperature change. A ventilator with a thermoactuator using the hinge with a thermoactuator according to any one of claims 1 to 4,
The two hinge members are used as members for opening and closing the ventilation port, and are configured to close the ventilation port while being rotated by the urging force of the spring means. With ventilator. The ventilator with a thermoactuator according to claim 5,
A ventilator with a thermoactuator, characterized in that a step is formed on the inner peripheral surface of the ventilation port and is in surface contact with the outer peripheral edge of the two hinge members.

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