JP3182499B2 - Toaster oven - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oven toaster, and more particularly, to a heater installed in a cooking chamber.

[0002]

2. Description of the Related Art A commonly used oven toaster is cooked by a heater attached to both side plates forming both side walls of a cooking chamber provided in the body of the oven toaster via insulators holding both ends. The thing is cooked by heating. The heater is generally provided with a heating wire in a pipe made of quartz glass or the like, and both ends of the heating wire are connected to connection terminals through which the insulator is inserted, and power is supplied from a power source through the connection terminal. And heating. In addition, the insulators are attached to the side plates by forming mounting holes in the side plates and inserting the insulators into the mounting holes. When the insulator is inserted into the mounting hole and mounted on both side plates, the movement of the insulator is restricted by the pipe in a direction facing each other, and the periphery of the mounting hole is restricted in a direction away from each other. Since the movement of the insulator is restricted by the tongue piece and the like formed in the above, the insulator moves to the inside of the cooking chamber when the restriction by the pipe is removed. Therefore, for example, when the pipe is damaged due to impact during transportation or transportation during transportation at home or during transportation, etc., the insulator whose movement toward the inside of the cooking chamber is restricted by this pipe is restricted by this restriction. As a result of the removal, a situation occurs in which the cooking chamber moves inward or separates from the mounting hole and hangs down in the cooking chamber. When the insulator moves toward the inside of the cooking chamber or separates from the mounting hole and hangs down in the cooking chamber in this manner, the insulator is exposed from the connection terminal attached to the insulator, a lead wire connected to the connection terminal, or a damaged pipe. There is a problem in that the heated heating wire contacts the side plate or the like, and in some cases, a leak occurs.

When an external force in a direction perpendicular to the axial direction of the pipe is applied to the end of the insulator protruding from the side plate by some means, the insulator rotates around the hole edge of the mounting hole as a fulcrum, and the pipe rotates. In some cases, the pipe may be damaged in the direction in which it is bent, and if the pipe breaks, the insulator moves in the inward direction of the cooking chamber or separates from the mounting hole as described above. There is a problem that the connection terminal attached to the insulator or a lead wire or the like connected to the connection terminal comes into contact with the side plate or the like, and in some cases, a leakage occurs.

[0004] Techniques for solving the above problems are as follows.
For example, it is described in Japanese Utility Model Publication No. 58-9690 as "a heater mounting device for a cooking appliance". As described in the detailed description of the invention and in the drawings, the mounting structure of the heater 9 described in this publication includes a heating wire 12 having terminals 11 at both ends of the heater 9 and the heating wire 12. The recess 1 into which the end of the inserted pipe 13 such as quartz glass is fitted.
4 and the insulator 15
Is a burring hole 16 formed in the side plate 7 for supporting the heater.
And the side plate 7 has a burring hole 16.
Crank-shaped tongue pieces 17, 18, and 19 and a substantially L-shaped tongue piece 20 are formed, and the crank-shaped tongue piece 19 is brought into contact with the outer cutout groove 21 of the insulator 15 inserted into the burring hole 16 to make the insulator 15 Of the insulator 15 is prevented from falling out of the cooking chamber 2, the crank-shaped tongue pieces 17, 18 are brought into contact with the outer step 22 of the insulator 15 to restrict the movement of the insulator 15, and the tongue piece 20 is attached to the outer end of the insulator. The insulator 15 is locked to the projection 23 formed in the portion to prevent the insulator 15 from falling into the cooking chamber 2.

However, what is described in the above publication is the three crank-shaped tongue pieces 17 to 19 formed by cutting and raising the side plate 7 on the side plate 7, and the substantially similar shape formed by cutting and raising the side plate 7 in the same manner. An L-shaped tongue piece 20 is provided,
The insulator 15 has an outer step 22 for contacting the crank-shaped tongue pieces 17 and 18, an outer cutout groove 21 for contacting the crank-shaped tongue piece 19, and a projection for locking a substantially L-shaped tongue piece 20. 23, the following problem arises.

That is, the burring hole 16 is formed in the side plate 7 and the crank-shaped tongue pieces 17 to 19 and the L-shaped tongue piece 20 are formed. Since the tongue pieces 17 to 19 are formed by cutting and raising the side plate 7 made of a thin metal plate, the strength is not always sufficient, so that the side plate 7 is transported during manufacturing or the insulator 15 is attached. When a large force is applied to the insulator, the insulator 15 is deformed, and this deformation causes a problem that the insulator 15 cannot be mounted in a normal state. Similarly, the insulator 15 is also provided with the crank-shaped tongue pieces 17 to 19.
In addition, since the outer step portion 22, the outer notch groove 21, and the projection 23 are formed so as to abut or lock with the substantially L-shaped tongue piece 20, a complicated structure is unavoidable. There is.

[0007]

As described above, in the conventional oven toaster, productivity is low due to the complicated mounting structure of the insulator formed on the side plate, and deformation during manufacturing due to insufficient strength. Etc. may occur,
There is also a problem that the insulator cannot be mounted in a normal state due to this deformation. In addition, since the mounting configuration of the side plate is complicated, the mounting configuration of the insulator is complicated, and the shape of the insulator itself must be complicated, resulting in poor productivity and difficulty in assembly. There's a problem.

[0008]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and the invention according to claim 1 comprises both side walls of a cooking chamber formed in a main body and an insulator insertion hole. A heater comprising a pipe, a heating wire disposed in the pipe, and insulators for holding both ends of the pipe is provided on both side plates provided in the cooking chamber while the insulator is held in the insulator insertion hole. In the oven toaster provided, at least one of the both side plates of the cooking chamber has an insulator insertion hole having an abutting portion formed from a periphery of a hole on the cooking chamber side, and a tip portion is located within a projection area of the insulator insertion hole. And elastically projecting from the side plate opposite to the cooking chamber side
A single tongue that works and a U-shape facing this tongue
And a holding portion for holding the pipe, at least one of the insulators, a connection terminal insertion hole provided in the holding portion for inserting a connection terminal of the heating wire, and An abutting portion that abuts the portion, a single locking portion that is formed at a portion of the side plate opposite to the cooking chamber and locks the tongue piece, and a ridge that is inserted into the cutout portion When
The provided respectively on said insulator insertion hole of the insulator from the cooking chamber side
The heater is arranged in the cooking chamber by inserting the projected ridge into the notch to allow the abutted portion to abut on the abutting portion and to lock the tongue piece at the locking portion. set was this
It is characterized by. According to a second aspect of the present invention, in the first aspect of the present invention, the insulator is provided on a base portion and one end located on the outer periphery of the base portion inside the cooking chamber from the other end located outside the cooking chamber. together consist with the convex portion formed over the side, the engagement recess is formed with an engagement portion on the other end with opening the outer peripheral surface on the convex portion, of the locking portion It is characterized in that the outer end surface is an insulating wall of a lead wire connected to the connection terminal .

According to the first aspect of the present invention, the structure of the side plate for attaching the insulator can be made simple and robust, and the attachment of the insulator to the side plate can be ensured. Have Further, the invention according to claim 2 has an effect of reliably preventing contact between the lead wire connected to the connection terminal of the heating wire and the side plate or the like, in addition to the effect of the invention according to claim 1 described above. is there.

[0010]

Next, an embodiment of the present invention will be described with reference to FIGS.

In FIG. 1 and FIG. 2, an oven toaster A comprises a main body 1 formed of a housing 1a and side walls 1b, 1c attached to both sides of the housing 1a. A cooking chamber 5 which is surrounded on both sides by side plates 20 and 30, an upper reflector 2, a rear reflector 3 and a lower reflector (not shown) provided and supported by the side plates 20 and 30. And this cooking room 5
Has an opening 6 formed on the front side of the main body 1.
The lower end of the opening 6 is rotatably mounted on a rotating shaft (not shown), and is opened and closed by an opening / closing door 8 provided with a handle 7.

In the cooking chamber 5, heaters 40 are provided above and below.
(Only the lower heater is shown in FIG. 1). Further, the both side plates 20 and 30 partitioning the cooking chamber 5 are provided.
In FIG. 1 (only 30 is shown), slot-like guide grooves 21 and 31 are formed. In the figure, reference numeral 10 denotes a grill, and the grill 10 is provided with guide projections 11 (only the left side is shown in FIG. 1) provided on both sides thereof in the guide grooves 21.
And 31 are freely slidably supported by the guide grooves 21 and 31. The grill 10 is provided with an operating rod (not shown) having one end rotatably mounted on both sides of the door 8 and the other end rotatably mounted on the guide projection 11. The opening / closing operation of the opening 8 causes the opening / closing of the opening 6 of the cooking chamber 5.

An operation panel 15 is provided on the right side in FIG. 1 on the front side of the main body 1, and a control room 16 is provided on the back side of the operation panel 15, that is, on the side of the side plate 20 of the cooking chamber 5. A control device (not shown) is provided in the control room 16, and power is supplied to the heaters 40 from a power source (not shown) under the control of the control device. The operation panel 15 is provided with operation buttons 20a to 20d for controlling the control device and display lamps 21a to 21c indicating a control state.

At the bottom of the main body 1, a waste tray 17 is provided below the opening 6 so as to be able to be pulled out.

The side plate 20 is formed of a thin metal plate or the like. The side plate 20 has a long hole-like guide along the front and rear of the cooking chamber 5 at a substantially middle portion in the vertical direction as described above. A groove 21 is formed, and this side plate 20 is formed as shown in FIG.
As shown in FIG. 4, insulator insertion holes 22 for inserting insulators 50, which will be described in detail later, are formed at upper and lower portions of the guide groove 21 therebetween. As shown in FIG. Three rectangular notches 23a to 23c are formed. A strip-shaped tongue 25 is formed in the side plate 20 by forming cut grooves 24a and 24b at the edge of the insulator insertion hole 22. In the hole 22, that is, the insulator insertion hole 22
And projecting outside the cooking chamber 5 of the side plate 20. The cut grooves 24a and 24b form a U-shaped notch 24 continuously, and the width of the notch 24 is large enough to insert and remove a protrusion 52 of an insulator 50 described later. . The tongue piece 25 returns to a predetermined position by the elasticity of the material of the metal plate forming the side plate 20. Also,
A peripheral edge of the insulator insertion hole 22 on the cooking chamber 5 side is a flat contact surface 22a as a contact portion.

The side plate 30 is formed of a thin metal plate or the like similarly to the side plate 20. The side plate 30 has a long hole along the front and rear of the cooking chamber 5 at a substantially middle portion in the vertical direction as described above. 5 and 6, and an insulator insertion hole 32 for inserting an insulator 60, which will be described in detail later, is formed in upper and lower portions of the guide groove 31 as shown in FIGS. I have. As shown in FIG. 6, the side plate 30 is provided with a pair of mounting pieces 33a, 33a formed by cutting and raising the hole edges of the insulator insertion holes 32 so as to face each other. The size of the insulator insertion hole 32 is large enough to allow the insulator 50 to pass therethrough. That is, the size of the insulator insertion hole 32 and the mounting pieces 33a, 33
The U-shaped space formed by cutting and raising a is formed slightly larger so that the later-described large-diameter portion 53 and ridge portion 52 of the insulator 50 can pass through.

Next, the configuration of the heater 40 will be described. The heater 40 includes a pipe 41 formed of quartz glass or the like as shown in FIGS. 2, 3 and 5, a connection terminal 42, 43 connected to both ends of the pipe 41, and a coil-shaped heater 41. Insulators 50 supporting the heating wire 44 formed at the end and the respective ends of the pipe 41
And an insulator 60. The connection terminals 42 and 43 are formed with screws.

Next, the insulator 50 will be described.
As shown in FIGS. 2, 3 and 4, the insulator 50 is made of the same material as that of ceramics and the like, and is formed by a cylindrical base portion 51 and a ridge portion 52 formed on the outer peripheral portion of the base portion 51. The portion on the one end side from the substantially middle portion of the base portion 51, that is, the portion located inside the cooking chamber 5 is a large-diameter portion 53,
Further, a portion located outside the cooking chamber 5 on the other end side is formed in the small-diameter portion 54, and a step 55 formed at the boundary between the large-diameter portion 53 and the small-diameter portion 54 makes contact with the side plate 20. The surface 22a, that is, an abutted portion that abuts on the abutting portion. The ridges 52 extend from the large diameter portion 53 and the small diameter portion 54 of the base portion 51, that is, from one end located inside the cooking chamber 5 to the other end located outside the cooking chamber 5. It is formed.

The protruding ridge 52 has a concave groove 56 serving as a locking concave portion which is open at one end, that is, the cooking chamber 5 side and the outer peripheral surface, and has the other end closed by a locking wall 56a serving as a locking portion. Are formed. The width of the concave groove 56 is slightly larger than the width of the tongue 25 so that the strip-like tongue 25 formed on the side plate 20 can freely enter and exit. It is also possible to form a wall facing the locking wall 56a without opening one end side of the concave groove 56, and to form the locking concave portion simply in a concave shape. But,
In the case where one end side is opened as in the case of the above-mentioned concave groove 56, there is an advantage that the structure of the molding die is simplified and the die is easily removed.

The large-diameter portion 53 of the base 51 has an opening 57 on the cooking chamber 5 side, and a fitting hole 57 as a holding portion for holding the pipe 41 by fitting an end of the pipe 41. together are formed, this is in the center of the bottom of the fitting hole 57 is formed a connection terminal insertion hole 57a formed through the base portion 51, the conductive to the connection terminal insertion hole 57a
The connection terminal 42 connected to the heating wire 44 is inserted.

Since the outer end surface of the locking wall 56a projects outward from the peripheral surface of the base portion 51 of the insulator 50, the protrusion 52 extends from the connection terminal insertion hole 57a.
Of the heating wire 44 inserted in the connection terminal insertion hole 57a because the distance L between the outer peripheral edges of the heating wire 44 can be increased.
It functions as an insulating wall for preventing a portion of the lead wire 80 described later connected to the side plate 20 from contacting the side plate 20 at a portion where an insulating coating is removed.

On the outer peripheral surface of the small-diameter portion 54, a detent rib 5 for engaging the notches 23 a to 23 c formed at the edge of the insulator insertion hole 22 of the side plate 20 to stop the insulator 50.
8a to 58c are formed.

The insulator 50 is attached to the side plate 20 by attaching the insulator 50 to a small-diameter portion 54 formed on a base portion 51 of the insulator 50 and a detent rib 58 formed on the small-diameter portion 54.
a through 58c, and the ridges 52 are inserted in correspondence with the insulator insertion holes 22, the notches 23a through 23c, and the notch 24 formed in the side plate 20. And insulator 5
In the process of inserting the “0” into the insulator insertion hole 22, the tongue piece 25 is pushed and expanded by the locking wall 56 a formed on the other end side of the convex streak 52, and when the insulator 50 continues to be inserted. The tip of the tongue piece 25 climbs over the outer peripheral edge of the locking wall 56a, and at the same time, the concave groove 56
And comes into contact with the inner portion of the locking wall 56a. At this time, the step portion 55 of the insulator 50, that is, the contact portion, comes into contact with the contact surface 22a of the insulator insertion hole 22 of the side plate 20, that is, the contact portion. That is, the step 5 of the insulator 50
Immediately before the plate 5 comes into contact with the contact surface 22a of the insulator insertion hole 22 of the side plate 20, the tip of the tongue piece 25 gets over the locking wall 56a and falls into the concave groove 56, and is located near the inside of the locking wall 56a. The dimensional relationship is as follows.

Therefore, when the insulator 50 is inserted through the insulator insertion hole 22 of the side plate 20 and attached, the stepped portion 55 which is the contacted portion is in contact with the contact surface 22a which is the contact portion of the insulator insertion hole 22. Since the insulator 50 is in contact with the side plate 20, the movement of the side plate 20 from the cooking chamber 5 to the outside is restricted, and the tongue piece 25 is in contact with the inside of the locking wall 56a serving as a locking portion to restrict the insulator. Reference numeral 50 indicates that the movement of the side plate 20 toward the inside of the cooking chamber 5 is restricted, and the insulator 50 is securely attached to the side plate 20 without falling off.

Further, since the contact portion is formed by the peripheral edge portion 22a of the insulator insertion hole 22, the contact portion is not strongly deformed or the like, and is prevented from moving toward the cooking chamber 5 side. The number of the tongue pieces 25 to be regulated may be one, so that the configuration for mounting is extremely simple and the productivity is good. The insulator 50 also has a simple structure.

Next, the insulator 60 will be described. The insulator 60 is made of the same material as that of the ceramic, like the insulator 50, and has a rectangular substrate portion 6 as shown in FIGS.
1 and a cylindrical portion 62 formed integrally with the substrate portion 61. The base plate 61 has square mounting holes 63, 63 on both sides of the cylindrical portion 62, through which mounting pieces 33a, 33a formed in the side plate 30 are inserted.
Are formed. In addition, the cooking chamber 5 is provided in the cylindrical portion 62.
The fitting hole 64 is formed as a holding portion for holding the pipe 41 by fitting the end of the pipe 41 and a cylindrical portion 62 at the bottom center of the fitting hole 64.
And a connection terminal insertion hole 65 formed through the substrate portion 61, and the connection terminal 43 connected to the heating wire 44 is inserted into the connection terminal insertion hole 65. .

The insulator 60 is attached to the side plate 30 by making the attachment holes 63 of the insulator 60 correspond to the attachment pieces 33a, 33a and the insulator insertion holes 32 correspond to the cylindrical portion 62. After that, the cylindrical portion 62 of the insulator 60 is inserted into the insulator insertion hole 32 of the side plate 30, and the mounting piece 33 of the side plate 30 is attached.
a and 33a are respectively inserted into the mounting holes 63 and 63 of the insulator 60, and then the mounting pieces 33a and 33a are bent.

Next, the assembly of the heater 40 will be described.

First, connection terminals 42 and 43 are connected to both ends of the heating wire 44 in advance, and both connection terminals 42 and 43 are connected.
One of the connection terminals 42 (may be the connection terminal 43) is inserted into the connection terminal insertion hole 57 a of the insulator 50, and a nut 70 is attached to fix the connection terminal 42 to the insulator 50. Next, the other connection terminal 43 is connected to the pipe 4.
1 from one end side and connect this connection terminal 43 to the pipe 41
A heating wire 44 formed in a coil shape is drawn out from the other end of the insulator 60, and the connection terminal 43 is inserted into the connection terminal insertion hole 65 of the insulator 60, and both ends of the pipe 41 are connected to the insulators 50 and 60, respectively. The fitting holes 57 and 64 are fitted. Next, a nut 71 is connected to the connection terminal 43.
And fix the connection terminal 43 to the insulator 60. In this state, the pipe 41 is elastically sandwiched between the insulators 50 and 60 by the restoring force of the heating wire 44 formed in a coil shape, and is integrally assembled.

Next, the arrangement of the heater 40 assembled as described above in the cooking chamber 5, that is, the attachment to the both side plates 20 and 30 will be described. First, the housing 1
The side plates 1b and 1c attached to both sides of the housing 1a are removed, and the side plates 20 and 30 are exposed on both sides of the housing 1a. Next, the assembled heater 40 is inserted through the insulator insertion hole 32 formed in the side plate 30 from the side to which the insulator 50 is fixed, and the insulator 50 is inserted into the insulator insertion hole 22 formed in the side plate 20.
Through. That ridge 52 formed insulators 50 to the insulator 50, rotation preventing rib 58a to notch 24 is formed to 58c on the insulator insertion hole 22, to no notch 23a 23
c. Then, the locking wall 56a of the tongue 25 is convex portion 52 in the course of the insulator 50 is inserted
The tongue piece 25 is pushed and
When the insulator 50 is further inserted and the insulator 50 is inserted, the tip of the tongue piece 25 goes over the locking wall 56a and falls into the concave groove 56. At this time, the step 55 of the insulator 50 is inserted into the insulator insertion hole 22. It contacts the contact surface 22a. As a result, the insulator 50 is attached to the side plate 20 with the movement of the pipe 41 in the axial direction being restricted by the side plate 20. When the heater 41 is inserted, the mounting piece 33 formed on the side plate 30 is inserted.
a, 33a are inserted into mounting holes 63, 63 of an insulator 60 attached to the other end of the heater 40, and when the insulator 50 is positioned or attached to the side plate 20, the attaching pieces 33a, 33a are attached. Since the insulators 60 are inserted into the holes 63 in a predetermined state, the insulators 60 are attached to the side plate 30 by bending the attachment pieces 33a.

By attaching the insulators 50 and 60 holding both ends of the pipe 41 to the side plates 20 and 30 in this manner, the heater 40 is disposed at a predetermined position in the cooking chamber 5.

Then, as shown in FIGS. 2, 3, and 5, terminals 80a, 81a connected to one ends of the lead wires 80, 81 are attached to the connection terminals 42, 43, respectively. By attaching, the electric connection to the heater 40, that is, the heating wire 44, is performed, and the side wall plates 1b, 1c are attached to both sides of the housing 1a. The lead wire 81 is connected to the upper and lower heaters 4.
0 connection terminals 43, 43 and the upper and lower heaters 4
The lead wires 80, 80 connected to the connection terminals 42, 42 of the insulator 50 are connected to a power cord 83 from a power source (not shown).
Power is supplied via the

As described above, by holding both ends of the pipe 41 on both side plates 20 and 30 by the insulators 50 and 60, the heater 40 is disposed in the cooking chamber 5, and the insulator 50 is attached. The configuration of the side plate 20 is a simple configuration in which the insulator insertion hole 22 is formed in the side plate 20 and the periphery of the insulator insertion hole 22 is cut and raised to form a single tongue piece 25. Since the contact surface 22a at the peripheral edge of the hole of the hole 22 is a contact portion for restricting the movement of the insulator 50, the heater 40 is robust without deformation even when an external force is applied in the axial direction. Further, since the insulator 50 is securely attached to the side plate 20, even if the pipe 41 is damaged, the insulator 50 does not fall. In addition, since the insulator 50 is attached to the side plate 20 simply by inserting the insulator 50 into the insulator insertion hole 22, the attachment is easy. Also, the side plate 3 of the insulator 60
The mounting holes 63, 63 formed in the insulator 60 are also mounted on the insulator 60.
Can be mounted simply by bending the mounting pieces 33a, 33a inserted into the mounting member, so that the mounting can be similarly easily performed.

In the above embodiment, the contact portion formed on the side plate 20 uses the contact surface 22a around the hole edge of the insulator insertion hole 22 as the contact portion.
The insulator 50 has a stepped portion 55 formed at a boundary between the large-diameter portion 53 and the small-diameter portion 54. Since the step 55 is an annular flat surface that comes into surface contact with the flat contact portion, the insulator 50 is connected to the side plate 20.
When mounted, the pipe 41 is held perpendicular to the plane of the side plate 20, so that the pipe 41 can be prevented from being inclined during assembly.

In the above embodiment, the insulator 5
0 and the shape of the side plate 20 to which the insulator 50 is attached,
The shape of the insulator 60 and the side plate 30 to which the insulator 60 is attached are different from each other. This is because the shape of the insulator 60 and the side plate 30 to which the insulator 60 is attached are different from those of the insulator 50 and the side plate 20 to which the insulator 50 is attached. You may make it form the same as a shape. In this case, for example, both side plates 2
When the upper reflector 2, the rear reflector 3, and the lower reflector (not shown) are attached to 0 and 30, the two insulators 50 and 60 (the same shape as the insulator 50) attached to both ends of the pipe 41 are attached to the two side plates 20 and Insulator insertion hole 2 formed in each of 30
2, 32 (the same shape as the insertion insulator insertion hole 22)
Attachment may be made in the process of assembling as appropriate, such as attachment at the same time as attachment of each reflector.

In the above embodiment, the side plate 2
The insulator 50 is formed with cutouts 23a to 23c at the edges of the insulator insertion hole 22 and locking ribs 58a to 58c fitted to the cutouts 23a to 23c are formed on the insulator 50. 24 can be omitted by preventing rotation. By doing so, the shape of the insulator 50 and the shape of the side plate 20 can be made simpler and more robust.

A locking wall 56a provided at the end of the concave groove 56 formed in the protruding ridge 52 of the insulator 50 has an eave-shaped locking portion covering the end of the concave groove 56 as shown in FIG. 56b may be formed. In this case, even if a large impact force is applied to the insulator 50 by, for example, accidentally dropping the oven toaster A at home or the like, the tip of the tongue piece 25 may be formed. The insulator 50 can be prevented from detaching from the side plate 20 without detaching from the concave groove 56.

[0038]

According to the first aspect of the present invention, the configuration of the side plate for attaching the insulator can be made simple and robust, and the attachment of the insulator to the side plate can be reliably performed. This has the effect of preventing the heater from being damaged and the danger of current leakage due to contact of the lead wire with the side plate due to the damage. According to a second aspect of the present invention, in addition to the effects of the first aspect of the present invention, the contact between the lead wire connected to the connection terminal of the heating wire and the side plate or the like is reliably prevented, and the side plate and the lead wire are prevented. And the effect that the insulation with this can be ensured.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing an overall configuration of an embodiment of an oven toaster of the present invention.

FIG. 2 is a cross-sectional view of the oven toaster of the embodiment.

FIG. 3 is a partial cross-sectional view showing a state where the insulator according to the embodiment is attached to a side plate.

FIG. 4 is a partial perspective view showing a relationship between the insulator and the side plate according to the embodiment.

FIG. 5 is a partial cross-sectional view showing a state where the other insulator of the embodiment is attached to a side plate.

FIG. 6 is a partial perspective view showing the relationship between the other insulator and the side plate of the embodiment.

FIG. 7 is a cross-sectional view showing another embodiment of the insulator of the above embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS A Oven toaster main body 1 Main body 5 Cooking room 20 Cooking room side plate 22 Insulator insertion hole 22a Contact surface (contact part) 24 Notch 25 Tongue piece 30 Cooking room side plate 32 Insulator insertion hole 40 Heater 41 Pipe 42, 43 Electricity Heating wire connection terminal 44 Heating wire 50 Insulator 51 Base portion 52 Convex ridge 55 Step (contacted portion) 56a Locking wall (locking portion) 57 Fitting hole (holding portion) 57a Connection terminal insertion hole 60 Insulator

Claims (2)

(57) [Claims] 1. A pipe, a heating wire disposed in the pipe, and both ends of the pipe are held on both side plates forming both side walls of a cooking chamber formed in a main body and provided with insulator insertion holes. In an oven toaster which is provided in the cooking chamber while holding a heater composed of an insulator and the insulator in the insulator insertion hole, at least one of both side plates of the cooking chamber, a peripheral edge of a hole on the cooking chamber side. An insulator insertion hole having an abutting portion consisting of: an elastically deformable unit having a distal end located in a projection area of the insulator insertion hole and projecting to a side of the side plate opposite to the cooking chamber side;
One tongue and a U-shaped notch facing this tongue
A Department were respectively formed, on at least one of said insulator, a holding portion for holding the pipe, and a connection terminal insertion holes for inserting the connection terminals of the heating wire is provided on the holding portion, the contact portion An abutting portion to be abutted, a single locking portion formed at a portion of the side plate opposite to the cooking chamber and locking the tongue piece ;
And a ridge portion to be inserted into the notch portion . The insulator is inserted from the cooking chamber side into the insulator insertion hole, and
The heater is disposed in the cooking chamber by inserting the protruding ridge into the notch, causing the abutted portion to abut on the abutting portion, and locking the tongue piece on the locking portion. Oven toaster characterized by the following. The method according to claim 2, wherein said insulator is composed of said convex portion formed over the other end located on the cooking chamber outwardly from one end located on the cooking chamber side to the outer peripheral portion of the base portion and the base portion At the same time, a locking concave portion having an outer circumferential surface side opened at the projecting ridge portion and a locking portion at the other end side is formed, and an outer end surface of the locking portion is insulated from a lead wire connected to the connection terminal. The oven toaster according to claim 1, wherein the oven toaster is a wall.