JPH08222326A - Temperature adjusting connection apparatus - Google Patents

Abstract

PURPOSE: To prevent overheating due to incomplete insertion of a plug pin by connecting the plug pin and an electric connection part only at completion of insertion of a heat sensing rod in a temperature detecting hole besides the connection between the plug pin and a mechanical connection part. CONSTITUTION: Plug pins 18, 18' of a plug case reception part 16 are inserted in contactors 15, 15' inside holes 6, 6' of a plug case 1' to held the plug pins 18, 18'. After the contactors 15, 15' are led to pass and brought into contact with contact points 13, 13', the plug pins 18, 18' are slightly pushed and stopped to set in connected state. The contacts 13, 13' are energized in the insertion direction of the plug pins 18, 18' by normally contact springs 14, 14' and keep the contact with the plug pins 18, 18' to carry an electric current. At the same time, insertion of a heat sensing rod 2 in a temperature detecting hole 17 is completed. Consequently, in the case the plug pins 18, 18' are not sufficiently inserted in the holes 6, 6', the contacts 13, 13' are not brought into contact with contacts 18a, 18a' of the plug pins 18, 18', so that the electric current cannot be carried and overheating can be prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a temperature control connection device which can be securely connected mechanically and electrically with a simple structure, and is particularly suitable for use in a hot plate, a grill pan, a BBQ, etc. The present invention relates to a temperature control connection device.

[0002]

2. Description of the Related Art A conventional temperature control connecting device is a kaikai sho 60
-53219 gazette. The temperature control connection device is configured as shown in FIG.
In the figure, 1 is a plug case, 2 is a heat-sensitive rod provided in the plug case 1, 3 is an electric cooker, and 4 is a temperature detection unit.
5, 5'is a pair of contacts provided in the plug case 1,
6,6 'are a pair of holes having contacts 5 and 5'opened in the plug case 1, and 7,7' are provided in the electric cooker 5 for connecting to the contacts 5 and 5 '. It is a pair of plug pins. The electric cooker 5 is arranged so that the tip of the plug pin 7 is located at a position different from the tip of the plug pin 7'in the extending direction.
It is arranged to project from. The contacts 5 and 5'are made so that the plug pins 7 and 7'are clamped to the plug pins 7 and 7'to prevent the plug pins 7 and 7 'from coming off, and secondly the electricity flows to the plug pins 7 and 7'. Was there.

Further, 8 is a temperature control unit to which the heat-sensitive rod 2 is connected, 9a is a power cord connected to the contact 5, and 9
Reference numeral b is a power cord connected to the temperature control unit, 10 is a pilot lamp for indicating energization, and 11 is a lead wire connected from the power cord 9a to the contactor 5 via the temperature control unit 8. Reference numeral 12 is an electric heater embedded in the electric cooker 3 and connected to the plug pins 7, 7 '.

Then, the pair of holes 6, 6'of the plug case 1
By inserting the plug pins 7 and 7'to each other and contacting the contacts 5 and 5'in the plug case 1, the plug pins 7 and 7'are electrically connected, and at the same time, the heat-sensitive rod 2 is electrically cooked. It is inserted into the temperature detection unit 4 of the container 3. by this,
While adjusting the cooking temperature of the electric cooker 3, the temperature controller 8 interrupts the current supplied from the contacts 5, 5 ′ to the electric heater 12 by the detected temperature.

Further, as shown in FIG. 5, when the tip ends of the plug pins 7 and 7'are slightly inserted into the holes 6 and 6 ', the temperature adjustment connecting device contacts the contact pin 5 with the plug pin 7,
Since the plug pin 7'is not in contact with the contact 5 ', the heating part is not energized. Therefore, it is necessary to prevent an accident due to poor contact between the plug pin 7,7' and the contact 5,5 '. It was intended. The power consumption of the hot plate, grill pan, and BBQ connected to the temperature control connection device is as large as 1 to 1.3 kW. Since the temperature was high, it was necessary to prevent accidents due to the poor contact.

[0006]

In the temperature control connecting device constructed as described above, the contact pin is a holding component for holding the plug pin and also serves as a contact for energizing, so that the plug pin cannot be inserted. Even if it is insufficient, power is supplied, and due to insufficient connection of the plug pin, the contact state between the contact and the plug pin changes and a gap is created temporarily, and sparks fly between the contact and the plug pin. The contact between the plug pin and the plug pin becomes abnormal due to overheating of the plug pin and the loss of elasticity of the contact due to overheating, which maintains the gap between the contact and the plug pin and makes it easier for the spark to fly. There is a drawback that the temperature rises and the plug case burns out.

At the same time, since the temperature sensing rod is not sufficiently inserted into the temperature control detecting portion, the temperature of the heat generating portion is abnormally increased due to the delay in the temperature detection, and the fluorine on the surface of the heat generating portion is increased. There are drawbacks such as shortening the life of the resin film, causing peeling from the surface of the heat generating portion of the fluororesin film, melting the resin due to abnormal temperature rise of the device body, and shortening the device life.

It is an object of the present invention to provide a temperature control connection device capable of preventing contact failure between a contact and a plug pin and overheating due to incomplete insertion of the plug pin.

[0009]

In order to achieve the above-mentioned object, the temperature control connecting device of the present invention comprises: a plug pin for mechanical and electrical connection;
A mechanical connection part having a first connection body having a temperature detection hole, a heat-sensitive rod inserted into the temperature detection hole, and a temperature control part connected to the heat-sensitive rod, and mechanically connected to the plug pin. And an electrical connection portion that is independent of the connection between the mechanical connection portion and the plug pin and that makes an electrical connection with the plug pin when the insertion of the heat-sensitive rod into the temperature detection hole is completed. And two connecting bodies.

According to the second aspect of the present invention, the electrical connection portion of the second connection body is located behind the mechanical connection portion with respect to the insertion connection direction of the plug pin of the first connection body. It is provided in.

The invention according to claim 3 is the above second aspect.
The electric connection portion has a contact point biased in the connecting direction of the plug pin by an elastic member, and the second mechanical connection portion includes a contactor for connecting the plug pin.

Furthermore, the invention according to claim 4 is the above-mentioned second aspect.
A contact point biased in the connecting direction of the plug pin by an elastic member as an electric connecting part of the second connecting part, and a concave part on the outer surface of the second connecting body as the second mechanical connecting part, As the first mechanical connecting portion, a fitting body that fits into the concave portion biased by the elastic member to the first connecting body is provided.

[0013]

Since the temperature control connecting device of the present invention has the above-mentioned structure, according to the invention of claim 1, the first connecting member and the second connecting member are connected.
When the thermosensitive rod is inserted into the temperature detecting hole after connecting the plug pin and the mechanical connecting part,
The plug pin and the electric connecting portion are connected to each other to energize, the heat-sensitive rod starts temperature detection, and the temperature controller controls energization.

According to the invention described in claim 2, the first
When the connection body and the second connection body are connected, the power is not supplied during the connection between the plug pin and the second mechanical connection portion, and the connection is made only when the plug pin and the second electrical connection portion are connected.

According to the third aspect of the invention, when the plug pin of the first connecting body is inserted into the second connecting body,
While the plug pin is mechanically connected to the contact, the plug pin is electrically connected to the contact point energized by the elastic member to conduct electricity.

Further, according to the invention of claim 4, when the plug pin of the first connecting body is inserted into the second connecting body,
The plug pin is inserted while the second connector is connected by the fitting body and the fitting body fits in the recess. When the fitting body fits in the recess, the plug pin is electrically connected to the contact urged by the elastic member. Is energized.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of a temperature control connection device of the present invention will be described below with reference to the drawings.

The first embodiment of the temperature control connection device of the present invention is constructed as shown in FIG. 1. In FIG. 1, 1'is a plug case which is made of resin and is a second connection body, Reference numerals 13 and 13 'are contacts made of a conductive member disposed in the plug case 1', and reference numerals 14 and 14 'are contact springs connected to the contacts 13 and 13'. The contacts 13 and 13 'are welded to the contact springs 14 and 14', one contact is connected to the power cord 9b, and the other is connected to the power cord 9a via the temperature controller 8.

Further, the contacts 15, 15 'are the contact points 13,
It is arranged at a position separated from 13 'so as not to be energized. The contacts 15 and 15 'are formed of elastic members so that the pair of plug pins to be inserted can be easily clamped.

On the other hand, 16 is a plug case receiver, which is a first connecting body composed of a recess for holding the plug case 1 '.
7 is a temperature detecting hole formed in the plug case receiver 16 for inserting the heat-sensitive rod 2, 18 and 18 'are plug pins made of rod-shaped metal, and 18a and 18a' are provided at the tips of the plug pins 18 and 18 '. It is a contact point. Also, the plug pins 18,1
8'is insulated by forming a coating film of a phenol resin on the side surface of the plug pin except the tip portions 18a, 18a '.
Further, 19 and 19 'are lead wires connected to the plug pins 17 and 17', and the plug pin and the lead wire are fixed by a nut. In addition, in the first embodiment, the plug pins 18 and 18 'serve both as a mechanical connection portion and an electrical connection portion.

The connection between the plug case 1'and the plug receiver 16 will be described with reference to FIG.
8, 18 'is inserted into the contacts 15, 15' inside the holes 6, 6 ', and the plug pins 18, 18' pass through the contacts 15, 15 'and come into contact with the contacts 13, 13'. Insert it, stop, and enter the connected state. Here, the contact points 13 and 13 'are constantly urged by the contact point springs 14 and 14' in the inserting direction of the plug pins 18 and 18 ', and are clamped by the contact elements 15 and 15'. Are contacts 13, 13 '
Keep contact with and energize. The plug case 1'is held by a plug receiver 16 formed in a bank shape.

If the plug pins 18 and 18 'are not sufficiently inserted into the holes 6 and 6'of the plug case 1, the plug pins 18 and 18' are clamped by the contacts 15 and 15 '. Since the internal contacts 13 and 13 'do not come into contact with the contacts of the plug pins 18 and 18', electricity is not supplied. That is, in order to energize, surely the plug pins 18, 18 '
Must be fully inserted until it contacts the contacts 13, 13 '.

The second embodiment of the temperature control connection device of the present invention is constructed as shown in FIG. 3, and in FIG. 3, 20 and 20 'are a pair of fitting portions formed in the plug case receiver, 21 and 21 'are holes provided in the fitting portions 20 and 20',
22 and 22 'are spherical fittings disposed inside the fitting portions 20 and 20'. Since the fittings 22 and 22 'are larger than the holes 21 and 21', a part of them projects from the holes 21 and 21 '. ing. Further, 23 and 23 'are springs for urging the fitting bodies 22 and 22' toward the holes 21 and 21 '. The ends of the fitting bodies 22 and 22 'that are not in contact with the fitting bodies 22 and 22' of the springs 23 and 23 'are sandwiched by the lock nuts 24 and 24' to press the springs 23 and 23 '. Further, 25 and 25 'are recesses formed by smoothly recessing the side surface of the plug case 1', and the fitting bodies 22 and 22 'fit into the recesses 25 and 25'. In addition, in the second embodiment, the fitting bodies 22 and 22 'are mechanical connection portions.

Then, as shown in FIG. 4, when the plug case 1'is inserted into the plug case receiver 16, the side surfaces of the plug case 1'will cause the mating bodies 22, 22 'to urge the springs 23, 23' at a certain point. Push in the direction, plug case 1 '
When the fitting bodies 22, 22 'reach the recesses 25, 25', they are fitted into the recesses 25, 25 'and the plug case 1'is fixed. At this time, the fitting can be confirmed by the fitting bodies 22 and 22 'hitting the concave portions 25 and 25' and making a clicking sound.
At the same time, the contacts 13 and 13 'of the plug case 1'and the tip portions 18a and 18'a of the plug pins 18 and 18' come into contact with each other to enable the energization. Then, when removing, the plug case 1 ′ is separated by pulling it out from the plug case receiver 16.

[0025]

Since the temperature control connecting device of the present invention has the above-mentioned structure, the invention according to claim 1 is such that when the first connecting body and the second connecting body are connected, the plug pin and the mechanical structure are connected. Independently of the connection with the connection part, the plug pin and the electrical connection part are connected when the insertion of the heat-sensitive rod into the temperature detection hole is completed. Temperature Overheating of the novel plug can be reliably prevented. Further, even if the temperature sensing rod is not sufficiently inserted into the temperature control detection unit, it is possible to prevent the temperature of the electric device body from abnormally increasing without being energized, and it is possible to improve safety.

According to the second aspect of the invention, when the first connecting body and the second connecting body are connected, the plug pin and the second mechanical connecting portion are not energized during the connection, and the plug pin and Since the second electric connection portion is connected to the device and the power is supplied,
It is possible to effectively prevent overheating of the connection body due to incomplete connection.

According to the third aspect of the invention, when the plug pin of the first connecting body is inserted into the second connecting body, the plug pin is mechanically connected to the contact, and then the plug pin is attached by the elastic member. Since it is electrically connected to the energized contact and energized, it does not energize when the plug pin is not fully inserted,
It is possible to reliably prevent overheating due to incomplete contact of the electrical connection portion.

Further, in the invention according to claim 4, when the plug pin of the first connecting body is inserted into the second connecting body, the plug pin is inserted while the second connecting body is connected by the fitting body and the fitting body is inserted into the recess. At the same time that the plug pin is fitted into the recess of the fitting body, the plug pin is electrically connected to the contact urged by the elastic member and energized, so that the plug pin itself is not mechanically connected, and the plug pin is scraped and metal. Since no powder is generated, it is possible to surely eliminate electric leakage due to the metal powder. Further, since the fitting body hits the concave portion at the time of fitting to generate a sound, it is possible to reliably confirm that the fitting is completely inserted.

[Brief description of drawings]

FIG. 1 is an explanatory view showing a first embodiment of a temperature control connection device of the present invention.

FIG. 2 is an explanatory view showing a sandwiched state of FIG.

FIG. 3 is an explanatory view showing a second embodiment of the temperature control connection device of the present invention.

FIG. 4 is an explanatory view showing a fitted state of FIG.

FIG. 5 is an explanatory diagram of a conventional temperature control connection device.

[Explanation of symbols]

 1'Plug case 2 Heat sensitive rod 8 Temperature control unit 13,13 'Contact 15,15' Contactor 18,18 'Plug pin 18a, 18'a Tip 16 Plug case receiver 17 Temperature detection hole 22,22' Fitting 25, 25 'recess

Claims (4)

[Claims] 1. A first connector having a plug pin for mechanical and electrical connection and a temperature detection hole, a heat-sensitive rod inserted into the temperature detection hole, and a temperature control connected to the heat-sensitive rod. And a mechanical connection portion that has a portion and that is mechanically connected to the plug pin, and independent of the connection between the mechanical connection portion and the plug pin, when the insertion of the heat-sensitive rod into the temperature detection hole is completed. And a second connection body having an electrical connection portion for making an electrical connection with the plug pin, and a temperature control connection device. 2. The electrical connection portion of the second connection body is provided at a position rearward of the mechanical connection portion with respect to the insertion connection direction of the plug pin of the first connection body. The temperature control connection device according to claim 1. 3. A contact for connecting the plug pin as the second mechanical connecting portion, which has a contact urged by an elastic member in the connecting direction of the plug pin. The temperature control connection device according to claim 1, further comprising: 4. The second electrical connection portion has a contact point biased in the connection direction of the plug pin by an elastic member, and the second mechanical connection portion of the second connection body is provided. A recess is provided on the outer surface, and a fitting body that fits into the recess biased by an elastic member to the first connection body is provided as the first mechanical connection portion. The temperature control connection device according to claim 2.