JPH0357036Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Purpose of the Invention] (Field of Industrial Application) The present invention relates to an electric stove, and in particular, to a terminal structure of a heating element.

(Prior Art) The terminal structure of the heating element in a conventional electric stove is such that, as described in, for example, Japanese Utility Model Publication No. 59-39532, wires are connected to both sides of the reflector from both ends.
A heating element with a lead wire drawn out is installed through it, a terminal block is attached to the outside of the side plate of the reflector, and one end of the terminal plate is fixed to this terminal block with a fixing screw.
On the other hand, the other end of this terminal plate is brought into contact with the end face of the heating element to regulate the axial position of the heating element, and a lead wire drawn out from the heating element is connected by a connecting screw.

(Problems to be solved by the invention) As mentioned above, the terminal structure of conventional electric stoves is such that one end of the terminal board is fixed to the terminal block with a fixing screw, and the other end is fixed to the terminal block with a connecting screw. As a result, a large number of screws are required to connect the lead wires of the heating element, making assembly difficult.

The present invention was developed in view of the above-mentioned points, and it is an object of the present invention to provide an electric stove that can be easily assembled by reducing the number of screws used in the terminal portion of the heating element. .

[Structure of the idea]

(Means for Solving the Problems) The electric stove of the present invention has a heating element with lead wires drawn out from both ends, which is installed through both side plates of the reflector of the electric stove body, and the ends of the heating element are passed through. A terminal block is provided on the side of the side plate of the reflector, which has a retaining groove facing the end of the heating element, and an engaging part between the retaining grooves, and a terminal block is provided between the retaining grooves of the terminal block. A terminal plate is provided facing the end face of the heating element, and a screw is further provided to connect at least the lead wire of the heating element to the terminal plate and to engage with the engaging portion of the terminal block to hold the terminal plate. It is something that

(Function) In the electric stove of the present invention, a terminal plate is installed between the holding grooves of the terminal block, and at least a lead wire drawn out from the heating element is connected to the terminal plate by a screw engaged with the terminal plate. In addition to connecting to
The terminal board is held on the terminal block by the tip of the screw engaging the engaging part of the terminal block.

(Embodiment) Hereinafter, the configuration of an embodiment of the present invention will be described with reference to the drawings.

In FIGS. 1 and 9, reference numeral 1 denotes an electric stove main body, which has an opening 2 on the front surface and a reflector 4 equipped with a plurality of heating elements 3 inside the opening 2. A main body case 5 is provided surrounding the upper, lower, and back portions of the main body case 4, side frames 6 are provided on both sides of the main body case 5, and a guard 7 is attached to the opening 2.

The reflector 4 has a reflective face plate 11 provided with a reflective surface having a parabolic cross section corresponding to each heating element 3,
Side plates 12 are joined to both sides of this reflective surface plate 11,
An edge 13 is provided on the outer periphery of the front end of the reflective face plate 11 and both side plates 12, and the upper edge 1 of the reflective face plate 11
3 is provided with a plurality of air outlets 14. Then, a blower (not shown) housed inside the main body case 5 blows the air sucked in from the lower surface of the main body case 5 forward through the air outlet 14 .

The heating element 3 attached to the reflector 4 is a cylindrical quartz tube 15, as shown in FIGS. 2 to 5.
A heating wire 16 is passed through the inside of the quartz tube 15, and lead wires 17 welded to both ends of the heating wire 16 are drawn out from both ends of the quartz tube 15. A heat-resistant pipe 18 is attached to the outer periphery of the welded portion of the heating wire 16 and the lead wire 17, and the lead wire 17 drawn out from the quartz tube 15 has a ring shape.

Both end portions of each heating element 3 are fitted through through holes 19 formed opposite to each other in both side plates 12 of the reflector 4.

Each through hole 1 on the outside of each side plate 12 of the reflector 4
A terminal block 21 is provided at a side position of 9. As shown in FIGS. 2 to 5 (the left side in FIG. 2 is the front side of the electric stove body 1), this terminal block 21 faces the end of each heating element 3 and has a terminal board mounting portion 22. are provided, and a mounting hole 23 is provided between each of the terminal board mounting portions 22, and a reflective face plate 1 is provided which is penetrated to the outside of the side plate 12.
The mounting piece 11a is fitted into the mounting hole 23 into the mounting piece 11a of No. 1, and protrudes outward from the mounting hole 23.
The terminal block 21 is attached to the side plate 12 by caulking the terminal block 21 to the edge of the attachment hole 23.
The terminal board mounting portion 22 is provided with a substantially U-shaped recess 24 that surrounds the outside of the end of the heating element 3, and a mounting frame 25 having a terminal board mounting surface 25a on the outside is provided around this recess 24. and this mounting frame 25
The holding frame 2 has holding grooves 26 at both ends thereof communicating in a direction facing the insertion direction of a terminal plate 31, which will be described later.
7 is provided, and a notch 28 is provided in the center, and an engaging portion 30 that protrudes into the recess 24 and has a concave engaging slot 29 is provided.

A terminal plate 31 is attached to each terminal plate attachment portion 22 of the terminal block 21. Each terminal board 31 is
Holding piece parts 33 to be inserted into the holding groove 26 are provided at both ends in the direction of insertion into the terminal board mounting part 22, and a lead wire lead-in part 34 is provided at the front end in the direction of insertion.
Furthermore, a lead wire 3 is provided at the rear end in the insertion direction.
5 are connected and fixed via a caulking fitting 36, and a screw 38 is screwed into a screw hole 37 formed in the center. This terminal plate 31 is attached to the terminal plate mounting surface 25a of the mounting frame 25 of the terminal block 21.
Both retaining pieces 33 are slid over the retaining groove 26
The tip of the screw 38 faces the engaging portion 30 through the notch 28 of the mounting frame 25. Further, the tip end of the inserted terminal plate 31 in the insertion direction faces the end surface of the heating element 3, and the lead wire 17 drawn out from the heating element 3 passes through the lead wire lead-in part 34 to the screw 38.
When the screw 38 is screwed in, the lead wire 17 comes into pressure contact with the terminal board 31 and is electrically connected. The terminal plate 31 enters into the engaging groove hole 29 and the terminal plate 31 is prevented from coming off.

As shown in FIG. 1, the reflector 4 is connected to the main body case 5 by screws 41 screwed through the four corners of the edge 13 of the reflector 4, and both sides facing outside are connected to the main body case 5. A mounting piece 42 is protruded from the edge of the main body case 5 one step further inward than the outer surface, and a plurality of mounting holes 4 are provided at predetermined positions of the mounting piece 42.
3 is provided.

The side frame 6 is formed in a semi-cylindrical shape that opens toward the main case 5, and a leg portion 45 is integrally formed at the lower part of the side frame 6. As shown in FIG.
The edge 46 of the side frame 6 is fitted onto the outside of the mounting piece 42 of the main body case 5 and is joined substantially flush with the outer surface of the main body case 5. A plurality of positioning protrusions 48, which are integrally provided and have a clamping groove 47 between them and the inner surface of the edge 46, clamp the mounting piece 42 and position the side frame 6 in the main body case 5, as shown in FIG. As such, a plurality of holding protrusions 49 protruding from predetermined positions inside the edge 46 fit into the mounting holes 43 of the mounting pieces 42 to hold the side frame 6 on the main body case 5. Note that, as shown in FIG. 1, the side frame 6 is screwed by screws 50 that are screwed into the bottom surface of the main body case 5 through the lower surfaces of the leg portions 45.

In the guard 7, a plurality of horizontal bars 52 are arranged horizontally between a pair of vertical bars 51 on both sides, and the upper and lower ends of each vertical bar 51 constitute the opening 2 of the electric stove main body 1. They are inserted into guard support holes 53 provided at the joint positions of the main body case 5 and both side frames 6, respectively. As shown in FIG.
between a substantially U-shaped support groove 54 that is opened in the direction of the main body case 5 and a protruding piece 55 that protrudes from the upper and lower edges of the main body case 5 and is joined to the inside of the support groove 54. The vertical bar 51 of the guard 7 inserted into the guard support hole 53
is a screw 4 that connects the reflector 4 to the main body case 5.
1 can be hidden. Note that the guard support hole 53
The reason for forming the support hole 54 and the protruding piece 55 is because it is better to form a hole at the position of the guard support hole 53 in order to hide the screw 41 with the vertical bar 51, but it is not necessary to form a hole at that position. This is because it is difficult to form the side frame 6 due to the mold structure.

Further, as shown in FIG. 8, the upper end of the vertical bar 51 of the guard 7 inserted into the guard support hole 53 comes into contact with a guard stopper 56 integrally formed inside the side frame 6, and It is held between the piece 55,
On the other hand, the lower part of the vertical bar 51 comes into contact with the upper surface of the positioning protrusion 48 that is integrally provided below the support hole 54 of the side frame 6, and its descent is restricted.

A main switch 61 is provided on the upper surface of the main body case 5, and lead wires 35 connected to each of the terminal plates 31 are connected to this main switch 61, so that energization to each heating element 3 can be switched.

Further, a steam port 62 is provided on the upper surface of the main body case 5 , and the steam port 62 communicates with a tank and a steam generator (not shown) disposed inside the main case 5 . The water put in is stored in the tank, and the steam generated by the steam generator comes out through the steam port 62. Note that the water level in the tank can be visually confirmed through a liquid level window 63 provided in the side frame 6 as shown in FIG.

Further, a tipping off switch (not shown) is attached to the leg portion 45 of one side frame 6, and the tipping off switch is turned on, for example, when the leg portion 45 comes into contact with the installation surface of the electric stove body 1 downward. The switch lever is turned on when the electric stove body 1 is in contact with the installation surface when the electric stove body 1 is installed in an upright position, and the switch lever is turned on when the electric stove body 1 is lifted or when the electric stove body 1 falls down. is turned off when separated from the installation surface, cutting off current supply to each heating element 3.

Further, a power cord 64 is drawn out from the rear surface of the main body case 5, and can be stored by being hung between hooks 65 integrally provided on the rear surface of the both side frames 6.

Then, in the terminal structure of the heating element 3, the terminal plate 31 is inserted into the terminal plate mounting part 22 of the terminal block 21, as shown in FIGS. Insert the piece 33 into the holding groove 26 so that the tip of the terminal plate 31 in the insertion direction faces the end surface of the heating element 3, and insert the tip of the screw 38 into the engagement portion 30 through the notch 28 of the mounting frame 25. The lead wire 1 drawn out from the heating element 3
7 is hooked onto the head 38a of the screw 38 through the lead wire lead-in portion 34, and further screwed in, the lead wire 17 is brought into pressure contact with the terminal board 31 to establish an electrical connection. The tip enters into the engagement groove 29 of the engagement portion 30, and the terminal plate 31 is prevented from coming off.

In the above embodiment, the terminal plate 31 has a screw hole 3.
7 is provided, and the tip of the screw 38 screwed into the screw hole 37 enters the engagement slot 29 of the engagement portion 30 to prevent the terminal plate 31 from coming off. is a through hole through which the screw 38 can pass, the engaging groove hole 29 of the engaging part 30 is a screw hole, and the screw 38 passing through the through hole of the terminal plate 31 is screwed into the screw hole of the engaging part 30. You may also prevent it from coming off by doing this.

Further, in the above embodiment, the lead wire 35 for supplying power to the terminal board 31 was connected using the caulking fitting 36, but the lead wire 35 is connected to the screw 38 to which the lead wire 17 of the heating element 3 is connected. They may also be connected together.

[Effect of idea]

According to the present invention, at least the lead wire drawn out from the heating element can be connected to the terminal plate by one screw engaged with the terminal block, and the tip of the screw is connected to the engagement part of the terminal block. The terminal plate can be held on the terminal block by being attached to the terminal block, the number of screws is small, the screw tightening process can be reduced, and the terminal portion of the heating element can be easily assembled.

[Brief explanation of drawings]

Fig. 1 is an exploded perspective view showing an embodiment of the electric stove of the present invention, Fig. 2 is a side view of the terminal portion thereof, Fig. 3 is a cross-sectional view of Fig. 2, and Fig. 4 is a cross-sectional view of Fig. 2. - sectional view, Figure 5 is an exploded perspective view of the terminal section, Figure 6 is a partial sectional view of the state in which the main body case and side frame are connected, and Figure 7 is a partial plan view showing the guard support hole. , FIG. 8 is a partially cutaway side view of the side frame showing how the guard is attached, and FIG. 9 is a perspective view showing the entire electric stove. 1... Electric stove body, 3... Heating element, 4...
...Reflector, 12...Side plate, 17...Lead wire, 2
DESCRIPTION OF SYMBOLS 1... Terminal block, 26... Holding groove, 30... Engaging portion, 31... Terminal plate, 38... Screw.

Claims (1)

[Scope of Claim for Utility Model Registration] An electric stove body having a reflector, a heating element installed through both side plates of the reflector and having lead wires drawn from both ends, and ends of the heating element on the side plates of the reflector. A terminal block that is provided on the side through which the terminal block passes through, has a holding groove facing the end of the heating element, and has an engaging part between both of the holding grooves, and a terminal block that fits between the holding grooves of this terminal block. and a terminal plate facing the end face of the heating element, and the terminal plate is engaged with the terminal plate to connect at least the lead wire of the heating element, and is engaged with the engaging portion of the terminal block to hold the terminal plate. An electric stove characterized by having a screw and.