JP3532807B2 - Sensor mounting device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sensor mounting device such as a temperature sensor in a rice cooker.

[0002]

2. Description of the Related Art FIG. 14 is a sectional view showing the structure of, for example, a rice cooker provided with a conventional sensor mounting device. In the figure, 1 is a rice cooker main body, 2 is an annular upper frame provided on the upper part of the main body 1, and 3 is a flange 2a formed on the inner periphery of the upper frame 2 which is housed inside the main body 1. A bottomed cylindrical inner pot (temperature-sensitive member) 4 suspended by a collar provided on the outer periphery of the upper opening is placed on the upper portion of the upper frame 2 to close the opening of the inner pot 3. The lid body 4 is rotatably pivoted by a hinge portion 6 provided with a hinge spring 5 provided on the rear side of the upper frame 2 and is provided on the front side of the upper frame 2. The locked state is released by pressing the stop button 7, and the lid body 4 is rotated around the hinge portion 6 by the urging force of the hinge spring 5 that urges in the opening direction. The upper part of the pan 3 is configured to be open.

Also, in the main body 1, a coil base 9 having an induction heating coil 8 extending from the bottom surface of the inner pot 3 to the lower side of the side body portion is provided.
A (sensor mount) is arranged on the outer periphery of the lower portion of the inner pot 3, and a circular sensor hole 1 is provided in the center of the bottom surface of the coil base 9.
Temperature-sensing part 12 of sensor assembly 11 inserted through 0
The (sensor) is configured to detect the temperature of the inner pot 3 by contacting the center of the outer bottom surface of the inner pot 3,
In order to reduce the noise emitted from the induction heating coil 8, a ferrite 13 is attached below the induction heating coil 8 and a magnetic shield 14 is attached to the outer periphery of the induction heating coil 8. Further, an inner heat shield plate 15 is arranged on the inner periphery of the upper frame 2 along the outer periphery of the inner pot 3.

Reference numeral 17 denotes an operation section provided on the front surface of the upper frame 2 with switches such as menu selection buttons and rice cooking buttons, and 18 an operation of the rice cooker based on an input from the operation section 17. A control board 19 for controlling the power source and a power supply board 19 for supplying electric power to the induction heating coil 8 and the like.

In the rice cooker provided with the conventional sensor mounting device, the sensor assembly 11 is configured to be fixed to the sensor assembly mounting portion 28 on the coil base 9 with the screw 41. When attaching, the temperature sensitive part 12 of the sensor assembly 11 is inserted into the sensor hole 10 of the coil base 9 with the body 1 of the rice cooker turned upside down, and then the support plate 27 of the sensor assembly 11 is screwed by the sensor 41. The assembly mounting portion 28 was fixed by screwing.

Next, the operation of the above-mentioned conventional rice cooker will be briefly described. Inner pot 3 containing rice and water
When the menu is selected from the operation unit 17 and rice is instructed with the lid 4 stored in the inside and the lid 4 is closed, the control board 18 controls the operation of the rice cooker based on this information and is guided from the power supply board 19. High frequency power is supplied to the heating coil 8. In this way, when the inner pot 3 is induction-heated by the alternating magnetic field of the high-frequency power generated by the induction heating coil 8, the temperature of the inner pot 3 is detected by the temperature-sensing section 12 which is in contact with the bottom surface of the inner pot 3, and this temperature is detected. Is fed back to the control board 18 and the electric power supplied to the induction heating coil 8 is adjusted.
Rice is cooked by heating the rice and water inside to an appropriate temperature.

[0007]

However, in the conventional sensor mounting apparatus shown in FIG. 14, since the screw is used for mounting the sensor assembly 11, the screw holes are aligned and screwed in two steps. Since work is required and time is required for each work, the sensor assembly 1
There was a problem that it was difficult to improve the productivity of mounting No. 1.

The present invention has been made to solve the above-mentioned problems of the conventional sensor mounting device. A first object of the present invention is to improve the mounting workability of the sensor assembly and to improve the productivity. An object is to obtain a sensor mounting device that can be improved.

A second object of the present invention is to provide a sensor mounting device in which the sensor assembly can be securely and easily fixed to the sensor assembly mounting portion.

[0010]

SUMMARY OF THE INVENTION The sensor mounting device according to the present invention, in order to achieve the above object, is arranged adjacent to the temperature sensing member, a sensor mount having a sensor hole,
From the side of the sensor mount opposite to the temperature-sensitive member,
A sensor that penetrates through the sensor hole and that detects the temperature of the temperature-sensitive member; an urging elastic member that urges the sensor in the direction of the temperature-sensitive member; A sensor mounting device, comprising: a support plate that is locked to the opposite side of the temperature sensitive member and supports the sensor via the elastic member for biasing; a convex portion or a concave portion on the sensor mounting base.
And forming the convex portion or the concave portion on the sensor.
The sensor mounting base is formed by forming a concave portion or a convex portion that engages with
A circle concentric with the sensor hole on the side opposite to the temperature-sensitive member
Forming a cylindrical portion, the cylindrical portion of the sensor mount or the front
The arm part and the arm part
A plurality of engaging ribs having a head portion with a large radial width
On the other side, at the position corresponding to the head part,
Provide an insertion hole into which the head can be inserted and
The head can be inserted by connecting to the insertion hole.
Form a rotating hole with a smaller radial width in the circumferential direction than the
After inserting the head part into the insertion hole, place the support plate in front.
Rotate with respect to the sensor mount to rotate the arm part
By moving the engaging ribs into the edge of the rotary hole.
By engaging with the compression elastic member of the biasing elastic member.
The force causes the end portion of the rotary hole and the head portion to come into contact with each other.
The support plate is configured to be axially locked to the sensor mount.

Further , it is arranged adjacent to the temperature-sensitive member,
Sensor mount with sensor holes and the front of this sensor mount
Take through the sensor hole from the side opposite to the temperature-sensitive member.
A sensor attached to detect the temperature of the temperature-sensitive member,
A biasing bullet that biases the sensor toward the temperature-sensitive member.
Member and the side opposite to the temperature-sensitive member of the sensor mount
The sensor via the elastic member for biasing the sensor.
In a sensor mounting device having a supporting plate for supporting,
The sensor is mounted on the opposite side of the sensor mount from the temperature-sensitive member.
While forming a cylindrical portion concentric with the hole, the cylindrical portion of the
The end portion has an arm portion and the width in the radial direction is larger than that of the arm portion.
A plurality of engaging ribs having a head portion are provided so as to project, and the supporting plate is provided.
The head part is inserted at a position corresponding to the head part.
A possible insertion hole is provided and connected to the insertion hole.
The arm part can be inserted and the radial direction from the head part
A rotating hole with a small width is formed in the circumferential direction, and the head part is
After inserting it into the insertion hole, attach the support plate to the sensor
Rotates with respect to the base and moves the arm into the rotation hole
And engage the engaging rib with the edge of the rotation hole.
By the compression reaction force of the elastic member for biasing,
The end portion of the rotary hole and the head portion are brought into contact with each other to support the support.
The plate should be axially locked to the sensor mount.
It was made.

Further, it is arranged adjacent to the temperature-sensitive member, and
Sensor mount with sensor holes and the front of this sensor mount
Take through the sensor hole from the side opposite to the temperature-sensitive member.
A sensor attached to detect the temperature of the temperature-sensitive member,
A biasing bullet that biases the sensor toward the temperature-sensitive member.
Member and the side opposite to the temperature-sensitive member of the sensor mount
The sensor via the elastic member for biasing the sensor.
In a sensor mounting device having a supporting plate for supporting,
The sensor is mounted on the opposite side of the sensor mount from the temperature-sensitive member.
A cylindrical portion is formed concentrically with the hole, and the cylindrical portion or the support is formed.
The elastically deformable arm part and the above-mentioned
A plurality of members having a head portion provided at the end of the arm portion
A mating rib is provided on the other side, and on the other side, a position corresponding to the head part is provided.
An insertion hole into which the head section is inserted, and
The insertion portion into the insertion hole and the engagement rib into the insertion hole.
Of the elastic member for biasing by engaging with the edge of
The head portion and the edge portion of the insertion hole are separated by a compression reaction force.
Abut the support plate axially with respect to the sensor mount
It is configured to be locked in the direction.

Further, it is arranged adjacent to the temperature-sensitive member,
Sensor mount with sensor holes and the front of this sensor mount
Take through the sensor hole from the side opposite to the temperature-sensitive member.
A sensor attached to detect the temperature of the temperature-sensitive member,
A biasing bullet that biases the sensor toward the temperature-sensitive member.
Member and the side opposite to the temperature-sensitive member of the sensor mount
The sensor via the elastic member for biasing the sensor.
In a sensor mounting device having a supporting plate for supporting,
In addition to forming protrusions or depressions on the sensor mount,
A concave portion that engages with the convex portion or the concave portion in the sensor or
A convex portion is formed, and the sensor mount is opposite to the temperature-sensitive member.
A cylindrical part is formed on the opposite side concentrically with the sensor hole, and
The holding plate is provided with a guide tube that fits with the cylindrical part,
Alternatively, an engaging projection is provided on either one of the guide tubes.
At the same time, on the other hand, move it to the position corresponding to the engaging protrusion.
The engaging groove into which the engaging protrusion can be inserted is formed in the circumferential direction,
After inserting the engagement protrusion into the engagement groove, move the support plate forward.
Rotate with respect to the sensor mount to engage the engaging protrusion with the engaging protrusion.
By moving in the groove, the engaging protrusion and the engaging
The groove is engaged, and by the compression reaction force of the biasing elastic member,
The engaging protrusion and the edge of the engaging groove are brought into contact with each other, and
So that the holding plate is axially locked to the sensor mount.
It is composed.

[0014]

[0015]

[0016]

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiment 1. Hereinafter, the sensor mounting device according to the first embodiment of the present invention will be described with reference to the vertical cross-sectional view of FIG. In FIG. 1, 1 is a rice cooker main body, 2 is an annular upper frame provided on the upper part of the main body 1, and 3 is a flange 2 which is housed inside the main body 1 and formed on the inner periphery of the upper frame 2.
The bottomed cylindrical inner pot (temperature-sensitive member) 4 suspended by a flange provided on the outer periphery of the upper opening of a is placed on the upper portion of the upper frame 2 and the opening of the inner pot 3 Is a lid body that closes, and the lid body 4 is rotatably supported by a hinge portion 6 provided with a hinge spring 5 provided on the rear side of the upper frame 2,
The locked state is released by pressing the locking button 7 provided on the front side of the upper frame 2, and the lid body 4 rotates around the hinge portion 6 by the biasing force of the hinge spring 5 that biases in the opening direction. The inner pot 3 stored in the main body 1 is opened to open above.

Inside the main body 1, a coil base 9 (sensor mounting base) having an induction heating coil 8 (heating means) is provided along the bottom of the inner pan 3 along the lower side of the side body. And a temperature sensing part 12 (sensor) of a sensor assembly 11 inserted through a circular sensor hole 10 provided in the center of the bottom surface of the coil base 9 is located at the center of the outer bottom surface of the inner pot 3. It is configured to detect the temperature of the inner pot 3 by abutting, and in order to reduce the noise emitted from the induction heating coil 8, the ferrite 1 is placed below the induction heating coil 8.
3, and a magnetic shield 14 is attached to the outer circumference of the induction heating coil 8. Furthermore, an inner pot 3 is provided on the inner circumference of the upper frame 2.
The inner heat shield plate 15 is arranged along the outer periphery of the inner heat shield plate 15.
A body heater 16 for electrically heating when cooking rice and keeping heat is adhered to the outer surface of the.

Reference numeral 17 denotes an operation unit provided with switches such as a menu selection button and a rice cooker button provided on the front surface of the upper frame 2, and 18 an operation of the rice cooker based on an input from the operation unit 17. A control board 19 for controlling the power source and a power supply board 19 for supplying electric power to the induction heating coil 8 and the like.

Since the operation of the rice cooker equipped with the sensor mounting device according to the first embodiment is exactly the same as that of the conventional example shown in FIG. 14, the description thereof is omitted. The configuration and structure of the sensor assembly 11 and the assembling method will be described in detail.

First, the detailed structure of the sensor mounting device will be described with reference to FIG. FIG. 2 is a cross-sectional view in which the vicinity (A) of the sensor assembly 11 shown in FIG. 1 is inverted and enlarged according to the state at the time of assembly. In FIG. 2, 20 is a bottomed cylinder and the bottom outer surface is inside. A cap made of a metal material having good thermal conductivity (for example, aluminum) that transfers the temperature of the inner pot 3 by contacting the bottom surface of the pot 3, and 21 is a thermistor made of a thermistor that is in contact with the inner bottom surface of the cap 20. , 22 has a plate-shaped spring portion formed on a part of the bottom surface of the bottomed cylindrical shape, one end of this spring portion is fixed to the cap 20, and the temperature sensing element 21 is fixed to the cap 20 by a semicircular portion formed at the other end. A sensor presser to be pressed against the bottom surface of the temperature sensor 23 is a temperature fuse that functions to turn off the power source by melting when the temperature rises abnormally.
A support base for fixing the cap 20 in a state in which the cap 3 is housed inside, and a lead wire 25 connected to the temperature sensitive element 21 and the temperature fuse 23, constitute the temperature sensitive portion 12 (sensor) as a whole.

An annular groove 2 is formed on the outer periphery of the support base 24.
4a is formed, and a biasing spring 26 is inserted into the groove 24a as a biasing elastic member, and a support plate 27 is formed on the bottom surface of the coil base 9 while compressing the biasing spring 26. By locking to the mounting portion 28, the temperature sensitive portion 12 inserted from the sensor hole 10 formed in the coil base 9 is biased toward the inner pot 3 by the biasing spring 26.
The temperature of the inner pot 3 is detected by contacting the bottom surface of the inner pot 3.

3 and 4, the support plate 27 and the urging spring 26 are respectively viewed from the bottom of the coil base 9.
And the bottom surface of the coil base 9, particularly the sensor assembly mounting portion 28.
2A is an exploded perspective view of the support plate 27, FIG. 7A is a top plan view of the support plate 27, FIG. 3 and 4
As shown in FIG. 2, the support plate 27 is provided with two engaging holes 29 in an arc shape, which are connected to the insertion hole 29a and the rotation hole 29b having a width smaller than the insertion hole 29a in the radial direction. A circular lead wire hole 30 is formed, and a guide tube 31 concentric with the engagement hole 29 is further provided below. Further, a guide rib 32 that is obliquely inclined along the circumferential direction is formed on the outer peripheral edge of the rotation hole 29b, and a recess 33 is formed at the end of the guide rib 32.

On the other hand, the sensor hole 1 is provided on the bottom surface of the coil base 9.
A cylindrical portion 34 that is concentrically provided with respect to 0, and a cylindrical portion 3
The sensor assembly mounting portion 28 is formed of an L-shaped rib 35 (engaging rib) provided at the end of the support plate 2.
The support plate 27 is fixed to the coil base 9 by engaging the engagement hole 29 formed in the No. 7 with the L-shaped rib 35. That is, the insertion hole 29 of the support plate 27
At a position corresponding to a, two L-shaped ribs 35 each having an arm portion 35a and a head portion 35b protruding on the outer peripheral side at the end portion of the arm portion 35a are provided, and the arm portion 35a is supported by a support plate. By inserting the head portion 35b into the rotation hole 29b of 27 and the insertion portion 29a, and by setting the outer diameter of the head portion 35b larger than the outer diameter of the rotation hole 29b, the head portion 35b is inserted. Hole 29
If the support plate 27 is rotated after being inserted into the
5a moves into the rotation hole 29b, the head portion 35b engages with the edge portion of the rotation hole 29b, and the edge portion of the rotation hole 29b is pressed against the lower end surface of the head portion 35b by the compression reaction force of the biasing spring 26. The support plate 27 is axially positioned and fixed.

Next, a method of attaching the sensor assembly 11 will be described with reference to FIG. In addition, in FIG. 5, the upper side is a plan view of the coil base 9 viewed from the bottom side, the lower side is a vertical sectional view, (a) shows a state before attachment, and (b) shows a state after attachment. Installation work is the rice cooker body 1
With the bottom of the top up. First, after inserting the temperature sensing part 12 from the induction heating coil 8 side into the sensor hole 10 provided at the center of the bottom surface of the coil base 9, the biasing spring 26 is attached to the support base 2.
The lead wire 25 inserted into the groove 24a of No. 4 and pulled out from the support base 24 is inserted into the lead wire hole 30 of the support plate 27 (FIG. 5A).

Next, the insertion hole 29a of the support plate 27 and the head portion 35b of the L-shaped rib 35 are aligned, and the support plate 27 is formed.
Is pressed downward to compress the biasing spring 26 and the supporting plate 27
The guide tube 31 of the above is inserted into the cylindrical portion 34, and the head portion 35b
Is inserted into the insertion hole 29a. At this time, the urging spring 26 is guided by the inner and outer surfaces of the groove portion 24a of the support base 24 and the inner surface of the guide cylinder 31, thereby preventing buckling and displacement in the radial direction. Thus, when the support plate 27 is inserted in the insertion hole 29a and the support plate 27 is in contact with the end surface of the cylindrical portion 34 and the support plate 27 is rotated in the direction of the arrow in the drawing, the arm of the L-shaped rib 35 is formed. The portion 35a is the rotation hole 29b.
While moving inside, the head portion 35b moves toward the guide rib 32.
Head over the head and turn about 45 degrees.
b is fitted in the recess 33, and the support plate 27 is fixed in this state by the reaction force of the biasing spring 26 (FIG. 6).
(B)).

As described above, according to the first embodiment, the insertion hole 29a and the insertion hole 29a are formed in the support plate 27.
An engaging hole 29 is formed by connecting a rotating hole 29b having a smaller width in the radial direction, and the bottom of the coil base 9 has a head portion 3 which is wider at the end in the radial direction than the rotating hole 29b.
After forming the sensor assembly mounting portion 28 having the L-shaped rib 35 having 5b, inserting the head portion 35b into the insertion hole 29a, the support plate 27 is rotated, and the support plate 27 is urged by the spring 26.
Since it is configured to press and fix to the lower end surface of the head portion 35b by the reaction force of, the mounting of the sensor assembly 11 can be completed only by rotating the support plate 27 while pushing it down, and the workability is remarkably higher than that of the screwing work. Improved, sensor assembly 1
1 has the effect of improving the productivity of mounting.

Further, since the concave portion 33 into which the head portion 35b is fitted is formed at the terminal end of the supporting plate 27 in the rotating direction, the supporting plate 27 is rotated by vibration due to boiling of the inner pot 3 during rice cooking after attaching the sensor assembly 11. This has the effect of preventing the temperature drop and securely fixing the temperature sensing part 12.

Further, the sensor assembly mounting portion 2 is attached to the support plate 27.
Since the guide tube 31 fitted into the cylindrical portion 34 of No. 8 is provided, the support plate 27 rotates concentrically with respect to the cylindrical portion 34, and the positioning of the arm portion 35a and the rotation hole 29b is reliably performed. , The support plate 27 can be easily rotated,
It has the effect of improving productivity.

Further, since the L-shaped rib 35 is provided at the end of the cylindrical portion 34, the support plate 27 can be rotated while abutting against the end of the cylindrical portion 34, and the support plate 27 can be inserted and rotated. In this case, the positioning in the axial direction at the time becomes easy, and the workability is further improved.

Further, since the biasing spring 26 is guided by the guide cylinder 31 provided on the support plate 27 and the groove 24a provided on the support base 24, the position of the biasing spring 26 does not move during assembly, Easy to assemble, and
There is a certain effect.

As is apparent from the above description, in the first embodiment, the support plate 27 is pressed against the end surface of the head portion 35b by the compression reaction force of the biasing spring 26, and the support plate 2 is pressed.
Since the axial position of 7 is fixed, the cylindrical portion 34 is not indispensable, and the L-shaped rib 35 is used for the coil base 9.
Even if it is configured to be directly attached to, the same effect can be obtained. In the first embodiment, the L-shaped rib 35 is formed on the coil base 9 side and the engagement hole 29 is formed on the support plate 27 side. However, conversely, the engagement hole is formed on the coil base 9 side. 29 may be configured to form the L-shaped rib 35 on the support plate 27 side.

Further, in the first embodiment, the support plate 27 is used.
In order to facilitate the rotation of the cylindrical portion 34 and the lower end surface of the head portion 35b, the spacing between the end surface of the cylindrical portion 34 and the head portion 3b is set to be wider than the axial thickness of the support plate 27.
If the distance between the lower end surfaces of the support plate 5b and the axial thickness of the recess 33 of the support plate 27 are made substantially the same and the support plate 27 is sandwiched between the cylindrical portion 34 and the head portion 35b, the support plate 27 is formed.
Can be more reliably fixed, and even if, for example, the inner pot 3 vibrates due to boiling during rice cooking and this vibration is transmitted to the support plate 27 via the temperature sensing unit 12 and the biasing spring 26, the support plate 27 Vibration in the axial direction is suppressed, and there is an effect that noise due to vibration of the support plate 27 and wear of the head portion 35b can be prevented.

As a modification of this, as shown in the perspective view of FIG. 6, a collar portion 35c is provided below the head portion 35b of the L-shaped rib 35, and the head portion 35b and the collar portion 35 are provided.
You may comprise so that the support plate 27 may be clamped between c.

Further, in the above-described first embodiment, the example in which the head portion 35b is projected to the outer peripheral side of the rotation hole 29b is shown, but if it is projected to the inner peripheral side, the perspective view of FIG. It may have a disk shape as shown in FIG.
If the radial width of 5b is larger than the radial width of the rotation hole 29b, the arm portion 35a and the head portion 35b.
Various shapes are possible.

In addition to the above-mentioned biasing spring 26 as the biasing elastic member, for example, a flexible material may be molded into a cylindrical shape and sandwiched between the support base 24 and the support plate 27. .

Embodiment 2. FIG. 8 is a perspective view of a mounting portion of the sensor mounting device according to the second embodiment of the present invention. In FIG. 8, 27 is a support plate and 29a is a support plate 27.
The reference numeral 35 denotes an insertion hole formed on the inner surface of the coil base 9. The reference numeral 35 denotes an engagement rib projectingly provided at a position on the coil base 9 corresponding to the insertion hole 29a. A head portion 35b which is provided so as to be inserted into the insertion hole 29a and has an inclination with respect to the insertion direction;
It is composed of a brim portion 35c provided below.

The method of mounting the sensor mounting device according to the second embodiment will be described below. First, the support plate 2
When the insertion hole 29a on the 7 is aligned with the position of the engaging rib 35 and then pushed down, the head portion 35b is inserted into the insertion hole 29a while being guided by the inclined portion. Here, as shown in the figure, since the end portion on the outer peripheral side of the head portion 35b is normally located outside the outer peripheral side of the insertion hole 29a, the head portion 35b is inserted into the insertion hole 29a.
While the arm portion 35a is elastically deformed while being inserted into the inside a, the head portion 35b is inserted into the insertion hole 29 by bending toward the inner peripheral side.
It is inserted in a. In this way, the head portion 35b is completely inserted into the insertion hole 29a, and the support plate 27 is inserted into the head portion 35b.
When it comes between b and the collar portion 35c, the flexed arm portion 35a returns to the outside, the support plate 27 is sandwiched between the head portion 35b and the collar portion 35c, and the axial position of the support plate 27 is fixed. It

As described above, according to the second embodiment, the insertion hole 29a is formed in the support plate 27, and the bottom surface of the coil base 9 is provided with the head portion 35b having the inclined portion in the insertion direction. By forming the engaging ribs 35 and inserting the head portion 35b into the insertion hole 29a, the end face of the head portion 35b and the edge portion of the insertion hole 29a are engaged with each other, and the support plate 27 is caused to react with the urging spring 26. By the head portion 35b
Since the support plate 2 is configured to be pressed and fixed to the end surface of the support plate 2,
The attachment of the sensor assembly 11 can be completed simply by pressing 7, the workability is improved as compared with the screwing work, and the productivity of attaching the sensor assembly 11 is improved. Further, the rotation work of the support plate 27 is not necessary, the assembly is further facilitated, and the rotation of the support plate 27 is prevented by the engagement ribs 35 and the insertion holes 29a, so that the temperature sensing part 12 can be securely fixed. There is.

In the second embodiment, the engaging rib 3
Although the example in which the collar portion 35c is provided below the head portion 35b is shown as 5, the configuration may be such that the collar portion 35c is brought into contact with the end surface of the cylindrical portion 34, and further, it is apparent from the above description. As described above, since the support plate 27 is configured to be pressed and fixed to the end surface of the head portion 35b by the reaction force of the biasing spring 26, the collar portion 35c may be omitted.

As a modified example of the second embodiment,
As shown in FIG. 9, engagement ribs 35 are formed on the support plate 27 side, and insertion holes 29a are formed on the side surfaces of the cylindrical portion 34 on the coil base 9 to engage the support plate 27 and the cylindrical portion 34 on the side surfaces. It may be configured to.

Embodiment 3. FIG. 10 shows a perspective view of a mounting portion of a sensor mounting device according to a third embodiment of the present invention. In FIG. 10, 27 is a support plate, 31 is a support plate 2
7 is a guide cylinder, 36 is an engagement protrusion formed on the outer circumference of the guide cylinder 31, 34 is a cylindrical portion provided on the coil base 9, and 37 is an engagement member formed on the inner periphery of the cylindrical portion 34. Compound protrusion 3
6 is an engaging groove for engaging with 6.

The method of mounting the sensor mounting device according to the third embodiment will be described below. First, the support plate 2
7 is aligned with the exposed portion of the engaging groove 37 on the end face of the cylindrical portion 34, and then is rotated in the right direction while being pressed downward, the engaging protrusion 36 is fitted into the engaging groove 37. Be done. Then, when the support plate 27 is further rotated, the guide tube 31 of the support plate 27 is guided while being guided by the engagement groove 37.
Is inserted into the cylindrical portion 34, and the engaging projection 36 is engaged with the engaging groove 37.
When the end of the support plate 27 is reached, the support plate 27 and the cylindrical portion 34 are engaged and fixed. Here, as illustrated, the engagement groove 37
Is configured to incline toward the end surface direction of the cylindrical portion 34 (upward in the figure), and the upward force is always applied to the engaging projection 36 by the reaction force of the biasing spring. Once the mating protrusion 36 reaches the end, the inclined portion of the engagement groove 37 prevents rotation in the opposite direction (direction in which engagement loosens).

As described above, according to the third embodiment, the engaging projection 3 is formed on the outer circumference of the guide cylinder 31 of the support plate 27.
6 is formed, and a cylindrical portion 34 having an engagement groove 37 formed on the inner circumference is disposed on the bottom surface of the coil base 9, and the engagement protrusion 36 is engaged with the engagement groove 37 to be fixed. With this configuration, the mounting of the sensor assembly 11 can be completed simply by pressing the support plate 27 and rotating it, and the workability is improved as compared with the screwing work, and the productivity of mounting the sensor assembly 11 is improved. . Further, since the end portion of the engagement groove 37 is inclined in the direction in which the reaction force of the biasing spring 26 acts, the support plate 27
Is prevented from rotating, and the temperature-sensitive part 12 can be securely fixed.

In the third embodiment, the guide tube 31
The engaging projection 36 is formed on the outer periphery of the guide tube 31 and the engaging groove 37 is formed on the inner periphery of the cylindrical portion 34.
Alternatively, the engagement protrusion 36 may be formed on the inner circumference of the cylindrical portion 34. Further, the guide cylinder 31 may be arranged on the outer peripheral side of the cylindrical portion 34, and the cylindrical portion 34 may be inserted into the guide cylinder 31.

Further, since the engaging projection 36 is biased upward in the drawing by the compression reaction force of the biasing spring 26, the width of the engaging groove 37 may be larger than the engaging projection 36. In this case, the engagement protrusion 36 is rotated while being brought into contact with the edge portion of the upper end of the engagement groove 37.

In each of the first to third embodiments, the rice cooker has been described as an example. However, the scope of application of the sensor mounting device according to the present invention is not limited to the rice cooker. In addition, the temperature sensing unit 12 is connected to the temperature sensitive member 3
The same effect can be obtained even if it is configured so as to abut against the side wall or the like.

Fourth Embodiment 11 is an enlarged cross-sectional view of the vicinity of the sensor assembly of the sensor mounting device according to the fourth embodiment of the present invention, and FIG. 12 is an exploded perspective view showing the mounting state of the sensor assembly. The outer peripheral wall 24c is a concave guide groove formed in the axial direction on the outer peripheral wall 24b.
It is formed at an opposing position on the outer peripheral wall 24b with an angle of 80 degrees. Further, 34a is an inner surface of the cylindrical portion 34, 3
Reference numeral 4b denotes a convex guide formed in the inner surface 34a at a position corresponding to the guide groove 24c.
c and the guide 34b detachably formed in the guide groove 24c are engaged with each other, so that the support base 24 does not rotate with respect to the cylindrical portion 34. In the figure, the same or corresponding parts as those in FIG.

The attachment / detachment of the sensor assembly 11 according to the fourth embodiment will be described below with reference to FIGS. 11 and 12. First, the guide groove 24c of the support base 24 and the cylindrical portion 3
4, the temperature sensitive portion 12 is inserted into the sensor hole 10 provided at the center of the bottom surface of the coil base 9 while aligning the positions of the guides 34b, and then the biasing spring 26 is inserted into the groove portion 24a of the support base 24. The lead wire 25 pulled out from the support base 24 is inserted into the lead wire hole 30 of the support plate 27. Next, the insertion hole 29a of the support plate 27 and the head portion 35b of the L-shaped rib 35 are aligned with each other, and the support plate 27 is pushed downward to compress the biasing spring 26, and the guide tube 31 of the support plate 27 is moved to the cylindrical portion. 34, and insert the head portion 35b into the insertion hole 29a.
Insert inside. In this way, the head portion 35b is inserted into the insertion hole 29.
When the support plate 27 is rotated in a state where the support plate 27 is inserted into the a and the support plate 27 is in contact with the end surface of the cylindrical portion 34, the L-shaped rib 3
The arm portion 35a of No. 5 moves in the rotation hole 29b, and the head portion 35b and the end surface of the support plate 27 are brought into engagement with each other,
The support plate 27 is fixed by the reaction force of the biasing spring 26.

As described above, according to the fourth embodiment, the guide groove 24c formed in the support base 24 and the guide 34b formed on the cylindrical portion 34 are engaged with each other to support the support plate 2
Since the support base 24 is configured so as not to rotate with respect to the cylindrical portion 34 when the sensor 7 is rotated, the sensor assembly 11 does not rotate during assembly, and thus the twisting of the lead wire 25 can be prevented.

Further, as shown in FIG.
b and the guide 34b are arranged on the same axis in the circumferential direction of the cylindrical portion 34, the guide groove 24c
Positioning of the guide hole 34a with the guide 34b, the head portion 35b, and the insertion hole 29a is facilitated, and the sensor assembly 11 is attached to the cylindrical portion 34.
This has the effect of improving workability when mounting on.

In the fourth embodiment, the support base 24
Although an example in which a concave guide groove 24c is formed on the outer peripheral wall 24b and a convex guide 34b is formed on the inner surface 34a of the cylindrical portion 34 is shown, a convex guide is formed on the outer peripheral wall 24b of the support base 24. A concave guide groove may be formed on the inner surface 34a of the cylindrical portion 34, and the same effect can be obtained.

Embodiment 5. FIG. 13 is an enlarged sectional view of the vicinity of the sensor assembly of the sensor mounting device according to the fifth embodiment of the present invention. In the figure, 24d is a recess formed on the lower surface of the support base 24, and 34c is an inner surface 34a of the cylindrical portion 34.
Is a convex portion formed at a position corresponding to the concave portion 24d of
By engaging the concave portion 24d and the convex portion 34c,
The support base 24 is configured not to rotate with respect to the cylindrical portion 34. In the figure, the same or corresponding parts as those in FIGS. 11 and 12 are designated by the same reference numerals, and the description thereof will be omitted.

As described above, according to the fifth embodiment, the recess 2 formed on the lower surface of the support base 24 at the time of assembly.
By engaging 4d with the convex portion 34c formed on the cylindrical portion 34, the rotation of the support base 24 with respect to the cylindrical portion 34 can be prevented as in the case of the fourth embodiment, and the lead wire 25 at the time of assembly can be prevented. It has the effect of preventing kinking.

In the fifth embodiment, the support base 24
Although the concave portion 24d and the convex portion 34c are formed on the cylindrical portion 34, the convex portion may be formed on the support base 24 and the concave portion may be formed on the cylindrical portion 34, and the same effect can be obtained. .

[0056]

Since the present invention is constructed as described above, it has the following effects.

On the side opposite to the temperature-sensitive part of the sensor mount
The sensor by simply pressing the support plate and rotating it.
Injury can be completed, and mounting of the sensor compared to conventional screw fastening
The workability of the sensor has been remarkably improved, and the sensor can be easily mounted.
There is an effect that a sensor mounting device with good productivity can be obtained. Well
In addition, when forming a convex or concave portion on the sensor mount,
The sensor is provided with a concave portion or a concave portion engaging with the convex portion or the concave portion.
Form a protrusion so that the sensor does not rotate with respect to the sensor mount.
The sensor is mounted on the sensor mounting base.
Be careful not to twist the lead wires connected to the sensor.
Has the effect of becoming

On the side opposite to the temperature-sensitive part of the sensor mount,
Then, simply press the support plate and rotate it
Installation can be completed, sensor installation is easy, and productivity is high.
A new sensor mounting device can be obtained, and
Since it is provided at the end of the cylindrical portion, the support plate is
The support plate can be rotated while being brought into contact with the end,
Easy axial positioning when inserting and rotating
The workability is further improved .

On the side opposite to the temperature-sensitive part of the sensor mount,
At the cylindrical part formed concentrically with the sensor hole
Sensor installation can be completed simply by pressing the support plate.
The sensor mounting device is easy to install and has good productivity.
It is effective.

On the side opposite to the temperature-sensitive part of the sensor mount,
Then, simply press the support plate and rotate it
Installation can be completed, sensor installation is easy, and productivity is high.
There is an effect that a good sensor mounting device can be obtained. Also, the sensor
Form a convex or concave portion on the mounting base
To form a concave portion or a convex portion that engages with the convex portion or the concave portion.
However, it is configured so that the sensor does not rotate with respect to the sensor mount.
Therefore, when mounting the sensor on the sensor mount,
The effect is that the lead wire connected to the connector will not be twisted .

[0061]

[0062]

[0063]

[0064]

[0065]

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a rice cooker using a sensor mounting device according to a first embodiment of the present invention.

FIG. 2 is an enlarged cross-sectional view of the vicinity of the sensor assembly of the sensor mounting device according to the first embodiment of the present invention.

FIG. 3 is an exploded perspective view showing a mounting state of the sensor mounting device according to the first embodiment of the present invention.

FIG. 4 is a plan view and a cross-sectional view of a support plate of the sensor mounting device according to the first embodiment of the present invention.

5A and 5B are a plan view and a cross-sectional view showing states before and after mounting the sensor mounting device according to the first embodiment of the present invention.

FIG. 6 is a perspective view of another engagement rib according to the first embodiment of the present invention.

FIG. 7 is a perspective view showing another engaging rib and an engaging hole according to the first embodiment of the present invention.

FIG. 8 is a perspective view showing a mounting state of a sensor mounting device according to a second embodiment of the present invention.

FIG. 9 is a perspective view showing another engaging rib and an engaging hole according to the second embodiment of the present invention.

FIG. 10 is a perspective view showing a mounting state of a sensor mounting device according to a third embodiment of the present invention.

FIG. 11 is an enlarged cross-sectional view of the vicinity of the sensor assembly of the sensor mounting device according to the fourth embodiment of the present invention.

FIG. 12 is an exploded perspective view showing a mounting state of a sensor mounting device according to a fourth embodiment of the present invention.

FIG. 13 is an enlarged cross-sectional view of the vicinity of the sensor assembly of the sensor mounting device according to the fifth embodiment of the present invention.

FIG. 14 is a vertical cross-sectional view of a rice cooker using a conventional sensor mounting device.

[Explanation of symbols]

3 Inner pan (temperature-sensitive member) 8 induction heating coil (heating means) 9 Coil base (sensor mount) 10 sensor holes 11 Sensor assembly 12 Temperature sensor (sensor) 24a groove 24b outer wall 24c Guide groove (recess) 24d recess 26 Energizing spring (elastic member for energizing) 27 Support plate 28 Sensor assembly mounting part 29 Engagement hole 29a Insertion hole (engagement hole) 29b Rotation hole (engagement hole) 31 guide tube 33 recess 34 Cylindrical part 34a inner surface 34b guide (convex part) 34c convex part 35 L-shaped rib (engaging rib) 35a arm part 35b head part 36 Engagement protrusion (engagement rib) 37 Engagement groove

Front page continuation (72) Inventor Sadao Kanaya, 1728 Omaeda, Hanazono-cho, Osato-gun, Saitama 1 Mitsubishi Electric Home Equipment Co., Ltd. (56) Reference JP-A-11-18932 (JP, A) JP-A-7- 313348 (JP, A) JP 8-182616 (JP, A) JP 7-275118 (JP, A) JP 7-263133 (JP, A) JP 8-66298 (JP, A) S. 61-31507 (JP, Y1) (58) Fields investigated (Int.Cl. ⁷ , DB name) A47J 27/00 103

Claims (4)

(57) [Claims] 1. A sensor disposed adjacent to a temperature-sensitive member,
The sensor mount having a hole, and the sensor mount from the side opposite to the temperature-sensitive member.
A sensor that penetrates through the sensor hole and that detects the temperature of the temperature-sensitive member; an urging elastic member that urges the sensor in the direction of the temperature-sensitive member; In a sensor mounting device provided with a support plate that is locked to the temperature sensing member on the opposite side and supports the sensor via the elastic member for biasing , a convex portion or a concave portion may be formed on the sensor mounting base.
The sensor into a recess that engages with the protrusion or recess.
Or a convex portion is formed on the side of the sensor mount opposite to the temperature-sensitive member.
A cylindrical portion is formed concentrically with the hole, and which of the cylindrical portion of the sensor mount or the support plate is used.
On the other hand, the width of the arm in the radial direction
A plurality of engaging ribs having a large head portion are provided to project, and on the other hand, the head portion is provided at a position corresponding to the head portion.
Provided with an insertion hole that can be inserted and connected to the insertion hole
The arm part can be inserted and
After forming a rotation hole having a small width in the circumferential direction in the circumferential direction and inserting the head portion into the insertion hole, the support plate is attached.
Rotate with respect to the sensor mount to move the arm part
By moving the engaging rib into the edge of the rotary hole.
Compression of the urging elastic member by engaging with the elastic member.
Abutting the end of the rotary hole and the head with a reaction force
The sensor mounting device is characterized in that the support plate is axially locked to the sensor mounting base. 2. A sensor arranged adjacent to a temperature-sensitive member,
The sensor mount having a hole, and the sensor mount from the side opposite to the temperature-sensitive member.
Mounted through the sensor hole, the temperature of the temperature-sensitive member
And a biasing bullet for biasing the sensor toward the temperature-sensitive member.
And the sensor member on the opposite side of the sensor mount from the temperature-sensitive member.
And supports the sensor via the biasing elastic member.
In a sensor mounting device including a support plate, the sensor mounting base is provided on the side opposite to the temperature-sensitive member.
The cylindrical portion is formed concentrically with the hole and
At the end of the arm part and the width in the radial direction is larger than the arm part.
A plurality of engaging ribs each having a head portion, and the head plate is provided at a position corresponding to the head portion on the support plate.
The insertion hole into which
And the arm part can be inserted to connect to the head part.
After forming a rotation hole having a small radial width in the circumferential direction and inserting the head portion into the insertion hole, the support plate is attached.
Rotate with respect to the sensor mount to move the arm part
By moving the engaging rib into the edge of the rotary hole.
Compression of the urging elastic member by engaging with the elastic member.
Abutting the end of the rotary hole and the head with a reaction force
The support plate in the axial direction with respect to the sensor mount.
Sensor mounting device characterized by being configured to be locked
Place 3. A sensor disposed adjacent to the temperature-sensitive member,
The sensor mount having a hole, and the sensor mount from the side opposite to the temperature-sensitive member.
Mounted through the sensor hole, the temperature of the temperature-sensitive member
And a biasing bullet for biasing the sensor toward the temperature-sensitive member.
And the sensor member on the opposite side of the sensor mount from the temperature-sensitive member.
And supports the sensor via the biasing elastic member.
In a sensor mounting device including a support plate, the sensor mounting base is provided on the side opposite to the temperature-sensitive member.
A cylindrical portion is formed concentrically with the hole, and the cylindrical portion or the
The elastically deformable arm and front
A plurality of head units provided at the end of the arm unit
Engaging ribs projecting, and the other corresponds to the head part
An insertion hole for inserting the head portion is provided at the position, and
Insert the lid part into the insertion hole and insert the engaging rib into the insertion hole.
By engaging with the edge of the hole, the elastic member for biasing is provided.
By the compression reaction force of the head portion and the edge portion of the insertion hole
Abut the support plate against the sensor mount.
Sensor mounting characterized by being configured to be locked in the direction
Attached device. 4. A sensor disposed adjacent to the temperature-sensitive member
The sensor mount having a hole, and the sensor mount from the side opposite to the temperature-sensitive member.
Mounted through the sensor hole, the temperature of the temperature-sensitive member
And a biasing bullet for biasing the sensor toward the temperature-sensitive member.
And the sensor member on the opposite side of the sensor mount from the temperature-sensitive member.
And supports the sensor via the biasing elastic member.
In the sensor mounting device including a support plate, the sensor mounting base may have a convex portion or a concave portion.
The sensor into a recess that engages with the protrusion or recess.
Or a convex portion is formed on the side of the sensor mount opposite to the temperature-sensitive member.
The cylindrical portion is formed concentrically with the support hole, and the cylindrical portion is formed on the support plate.
Is provided with a guide tube to be fitted to the cylindrical portion or the guide.
Engaging projections on either one of the cylinders
Insert the engaging protrusion into a position corresponding to the engaging protrusion.
Engagement groove that can be inserted is formed in the circumferential direction, and
After inserting it into the engagement groove, attach the support plate to the sensor mount.
Rotate with respect to each other to move the engaging protrusion in the engaging groove.
By engaging the engagement protrusion and the engagement groove,
By the compression reaction force of the biasing elastic member,
The edge of the engagement groove is brought into contact with the support plate, and the support plate is
It is configured to be locked in the axial direction with respect to the mounting base.
Characteristic sensor mounting device.