JPH09152134A - Oven toaster - Google Patents

Abstract

PROBLEM TO BE SOLVED: To securely prevent a heater from being damaged. SOLUTION: In an oven toaster where a heater is mounted on a side plate of a cooking chamber, there are provided in at least one side plate 2 of the cooking chamber 5 an insulator insertion hole 22 having a contact surface 22a (contact part) on a hole edge on the side of the cooking chamber 5, and a tongue piece 25 located in a projection region of the insulator insertion hole 22 in its tip end and protruded outside the cooking chamber 5. There are provided on and in the insulator 50 a fitting hole 57 (holder part) for holding the pipe 41, a connection terminal insertion hole provided in the engagement hole 57 for permitting a connection terminal 42 of an electric heating wire 43 to pass therethrough, a step part (contacted part) in contact with the contact surface 22a, and a stopper wall 56a (stopper part) formed on a portion of the cooking chamber 5 located outside the same. The insulator 50 is inserted into the insulator insertion hole 22 from the side of the cooking chamber 5 to bring the step part 55 into contact with the contact surface 22, and the tongue piece 25 is engaged with the stopper wall 56a to dispose the heater 40 in the cooking chamber.

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 mounting a heater arranged in a cooking chamber.

[0002]

2. Description of the Related Art Generally used oven toasters are cooked by a heater attached to both side plates that form both side walls of a cooking chamber provided in the main body of the oven toaster through insulators that hold both ends. It heats and cooks things. The heater generally has a heating wire arranged in a pipe made of quartz glass or the like, 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 terminals. It is configured to be heated. Further, the insulators are attached to the both side plates by forming attachment holes in these side plates and inserting the both insulators through the attachment holes. When the insulator is inserted into the attachment hole and attached to both side plates, the movement of the insulator is restricted by the pipes in the opposite directions, and the peripheral edge of the attachment hole is separated in the opposite directions. Since the movement of the insulator is restricted by the tongue piece and the like formed in the above, when the restriction by the pipe is removed, the insulator moves to the inside of the cooking chamber. Therefore, for example, when the pipe is damaged when carrying it at home, or during transportation during transportation or due to impact during transportation, the movement of the insulator inside the cooking chamber is restricted by the pipe. Since it is removed, it may move inward of the cooking chamber or may be detached from the attachment hole and hang down inside the cooking chamber. Thus, when the insulator moves inward of the cooking chamber or detaches from the mounting hole and hangs down in the cooking chamber, it is exposed from the connection terminal attached to the insulator, the lead wire connected to this connection terminal, or the damaged pipe. There is a problem in that the heating wire comes into contact with the side plate or the like, and in some cases, electric leakage occurs.

When an external force is applied to the end portion of the insulator projecting from the side plate in a direction orthogonal to the axial direction of the pipe, the insulator is rotated about the hole edge of the mounting hole as a fulcrum, and the pipe is rotated. In some cases, the pipe may be damaged due to the force in the direction of bending the pipe, and if this pipe is damaged, the insulator moves inward of the cooking chamber or detaches from the mounting hole in the same manner as above, and There is a problem in that the connection terminal attached to the insulator or the lead wire or the like connected to the connection terminal may come into contact with the side plate or the like and cause electric leakage in some cases.

A technique for solving the above problem is
For example, it is described as "heater mounting device for cooking device" in Japanese Utility Model Publication No. 58-9690. The mounting structure of the heater 9 described in this publication has a heating wire 12 having terminals 11 at both ends of the heater 9 and the heating wire 12 as described in the detailed description of the invention and the drawings. Recessed portion 1 into which the end of the inserted pipe 13 such as quartz glass is fitted
The insulator 15 is composed of an insulator 15 having 4
Is a burring hole 16 for supporting the heater formed in the side plate 7.
And the side plate 7 has burring holes 16
Crank-shaped tongues 17, 18, 19 and a substantially L-shaped tongue 20 are formed, and the crank-shaped tongue 19 is brought into contact with the outer cutout groove 21 of the insulator 15 inserted into the burring hole 16 so that the insulator 15 Of the crank-shaped tongue pieces 17 and 18 are brought into contact with the outer step portion 22 of the insulator 15 to restrict the movement of the insulator 15 and the tongue piece 20 to the outer end of the outer peripheral surface of the insulator. It is locked to the protrusion 23 formed on the portion to prevent the insulator 15 from dropping into the cooking chamber 2.

However, the one disclosed in the above publication has three crank-shaped tongues 17 to 19 formed by cutting and raising the side plate 7 on the side plate 7, and a substantially crank member formed by cutting and raising the side plate 7 in the same manner. An L-shaped tongue piece 20 is provided, and
The insulator 15 has an outer step 22 for contacting the crank-shaped tongues 17 and 18, an outer notch 21 for contacting the crank-shaped tongue 19 and a protrusion for locking the substantially L-shaped tongue 20. Since 23 is provided, there are the following problems.

That is, since the burring hole 16 is formed in the side plate 7 and the crank-shaped tongues 17 to 19 and the L-shaped tongue 20 are formed, the structure is complicated and the crank is Since the tongues 17 to 19 are formed by cutting and raising the side plate 7 made of a thin metal plate, it is not always sufficient in terms of strength, and therefore the side plate 7 is transported or the insulator 15 is attached at the time of manufacturing. There is a problem that when a large force is applied, the insulator 15 is deformed, and the insulator 15 cannot be attached in a normal state due to this deformation. In addition, the insulator 15 is also similarly provided with the crank-shaped tongues 17 to 19 as described above.
Further, since the outer step portion 22, the outer notch groove 21, and the protrusion 23 that come into contact with or lock the substantially L-shaped tongue piece 20, the outer cutout groove 21, and the protrusion 23 are formed, the structure must be complicated. There is.

[0007]

As described above, in the conventional oven toaster, the productivity is poor due to the complicated mounting structure of the insulator formed on the side plate, and the strength is not sufficient, so that it is deformed during manufacturing. Etc. may occur,
Further, there is a problem that the insulator cannot be attached in a normal state due to this deformation. Further, since the mounting structure of the insulator is complicated due to the complicated mounting structure of the side plate, the shape of the insulator itself must be complicated, which results in poor productivity and is difficult to assemble. 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 constitutes both side walls of a cooking chamber formed in the main body and has an insulator insertion hole. On both side plates provided, a heater consisting of a pipe, a heating wire arranged in the pipe, and an insulator holding both ends of the pipe is arranged in the cooking chamber while holding the insulator in the insulator insertion hole. In an oven toaster provided, at least one of both side plates of the cooking chamber, an insulator insertion hole having an abutting portion at the periphery of the hole edge on the cooking chamber side, and a tip portion within the projection region of the insulator insertion hole. Forming a tongue protruding from the cooking chamber side of the side plate and the opposite side while being positioned,
At least one of the insulators, a holding portion that holds the pipe, a connection terminal insertion hole that is provided in the holding portion and that inserts a connection terminal of the heating wire, and an abutted portion that abuts the abutting portion. And a locking portion formed on a side of the side plate opposite to the cooking chamber for locking the tongue, and inserting the insulator from the cooking chamber side into the insulator insertion hole to attach the contacted portion. An oven toaster in which the heater is disposed in a cooking chamber by abutting on the abutting portion and by locking the tongue piece on the locking portion, and the invention according to claim 2, In the invention according to claim 1, the insulator comprises a base portion and a ridge formed on an outer peripheral portion of the base portion from one end side located inside the cooking chamber to the other end located outside the cooking chamber. With the construction, if the outer peripheral surface side is opened to this ridge, Wherein the other end forms a locking recess having a locking portion, in which the outer end surface of the locking portion and the toaster oven that an insulating wall of a lead line connected to the connection terminal.

According to the first aspect of the present invention having the above-mentioned structure, the side plate for mounting the insulator can be made simple and robust, and the insulator can be securely mounted on the side plate. I have. Further, the invention according to claim 2 has an effect that, in addition to the effect of the invention according to claim 1, it is possible to reliably prevent contact between the lead wire connected to the connection terminal of the heating wire and the side plate or the like. is there.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of the present invention will be described with reference to FIGS.

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

A heater 40 is provided above and below the cooking chamber 5.
(Only the lower heater is shown in FIG. 1). Also, the side plates 20 and 30 that divide the cooking chamber 5
Slotted guide grooves 21 and 31 are formed in (only 30 is shown in FIG. 1). In the figure, 10 is a grill, which has guide projections 11 (only the left side is shown in FIG. 1) provided on both sides of the grill.
The guide grooves 21 and 31 are slidably supported by being loosely fitted in the guide grooves 21 and 31. The grill 10 has one end rotatably attached to both sides of the open / close door 8 and the other end rotatably attached to the guide protrusion 11 via an operating rod (not shown). In association with the opening / closing operation of 8, the housing 6 is projected and retracted through the opening 6.

An operation panel 15 is provided on the front side of the main body 1 on the right side in FIG. 1, and a control chamber 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 arranged in the control chamber 16, and electric power is supplied to the heaters 40, 40 from a power source (not shown) by 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 showing a control state.

A scrap tray 17 is provided at the bottom of the main body 1 below the opening 6 so as to be freely drawn out.

Next, the side plate 20 is formed of a thin metal plate or the like, and the side plate 20 is provided with 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 the side plate 20 has a groove 21 shown in FIG.
As shown in FIG. 4, an insulator insertion hole 22 for inserting an insulator 50, which will be described in detail later, is formed in the upper and lower portions sandwiching the guide groove 21, and the edge of the insulator insertion hole 22 is as shown in FIG. Three rectangular cutouts 23a to 23c are formed. Further, a strip-shaped tongue piece 25 formed by forming cut grooves 24a and 24b at the hole edge of the insulator insertion hole 22 is formed on the side plate 20, and the tongue piece 25 has its tip end portion inserted with the insulator piece. In other words, inside the hole 22, the insulator insertion hole 22
Is formed on the side plate 20 so as to project to the outside of the cooking chamber 5. Further, the cut grooves 24a and 24b continuously form a U-shaped notch 24, and the width of the notch 24 is large enough to insert and remove a protrusion 52 of an insulator 50 described later. . Further, the tongue piece 25 is adapted to return to a predetermined position by the elasticity of the material of the metal plate forming the side plate 20. Also,
A peripheral edge portion 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 like the side plate 20, and 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. -Shaped guide groove 31 is formed, and as shown in FIGS. 5 and 6, insulator insertion holes 32 for inserting an insulator 60, which will be described in detail later, are formed in upper and lower portions sandwiching the guide groove 31. There is. Further, 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 edge of the insulator insertion hole 32 so as to face each other. The size of the insulator insertion hole 32 is such that the insulator 50 can pass through. That is, the size of the insulator insertion hole 32 and the attachment pieces 33a, 33
The U-shaped space formed by cutting and raising a is formed to be slightly large so that a large-diameter portion 53 and a ridge portion 52 of the insulator 50, which will be described later, can pass therethrough.

Next, the structure of the heater 40 will be described. As shown in FIGS. 2, 3 and 5, the heater 40 is a pipe 41 formed of quartz glass or the like, and is arranged in the pipe 41 and has connection terminals 42 and 43 connected to both ends thereof and a coil shape. Insulator 50 for supporting the respective ends of the heating wire 44 and the pipe 41 formed on the
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 ceramics and the like, and is formed of a cylindrical base portion 51 and a ridge portion 52 formed on the outer peripheral portion of the base portion 51. The large-diameter portion 53 is a portion on the one end side from the substantially middle portion of the base portion 51, that is, a portion located inside the cooking chamber 5,
A portion of the other end located outside the cooking chamber 5 is formed in the small diameter portion 54, and a step portion 55 formed at a boundary between the large diameter portion 53 and the small diameter portion 54 is in contact with the side plate 20. The surface 22a, that is, the abutted portion that abuts the abutting portion is configured. The ridge portion 52 extends from the large-diameter portion 53 and the small-diameter portion 54 of the base portion 51, that is, from one end side located inside the cooking chamber 5 to the other end side located outside the cooking chamber 5. Is formed.

A concave groove 56 as a locking concave portion is formed on the protruding portion 52 by opening one end side, that is, the cooking chamber 5 side and the outer peripheral surface and closing the other end side by a locking wall 56a as a locking portion. Are formed. The width of the concave groove 56 is formed to be slightly larger than the width of the tongue piece 25 so that the strip-shaped tongue piece 25 formed on the side plate 20 can freely move in and out. Alternatively, one end of the recessed groove 56 may be formed with a wall facing the locking wall 56a without being opened, and the locking recess may be formed in a simple concave shape. But,
When the one end side is opened like the concave groove 56, there is an advantage that the structure of the molding die is simple and the die can be easily removed.

Further, the large diameter portion 53 of the base portion 51 has a fitting hole 57 as a holding portion for opening the cooking chamber 5 side and fitting the end portion of the pipe 41 to hold the pipe 41. A connection terminal insertion hole 57a is formed at the center of the bottom of the fitting hole 57, and the connection terminal insertion hole 57a is formed through the base portion 51. The heating wire 44 is formed in the connection terminal insertion hole 57a. The connection terminal 42 that is d-connected 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 protruding strip portion 52 extends from the connection terminal insertion hole 57a.
Since it is possible to increase the distance L between the outer peripheral edges of the connection terminals 42 of the heating wire 44 inserted into the connection terminal insertion holes 57a.
It serves as an insulating wall for preventing contact with the side plate 20 such as a portion of the lead wire 80, which will be described later, removed from the insulating coating.

The outer peripheral surface of the small-diameter portion 54 is fitted with notches 23a to 23c formed on the edge of the insulator insertion hole 22 of the side plate 20 to prevent the insulator 50 from rotating.
8a to 58c are formed.

The insulator 50 is attached to the side plate 20 by mounting the insulator 50 on the small diameter portion 54 formed on the base portion 51 of the insulator 50 and the rotation stopping rib 58 formed on the small diameter portion 54.
a through 58c, and the ridge 52 is inserted through the insulator insertion hole 22 formed in the side plate 20, the notches 23a through 23c, and the notch 24, respectively. And insulator 5
In the process of inserting 0 into the insulator insertion hole 22, the tongue piece 25 is pushed and spread by the locking wall 56a formed on the other end side of the convex strip 52, and when the insulator 50 is further inserted. The tip of the tongue piece 25 rides over the outer peripheral edge of the locking wall 56a, and the concave groove 56 is formed by its own elastic force.
It contacts with the inner side of the locking wall 56a. At this time, the stepped portion 55 of the insulator 50, that is, the contacted portion, contacts the contact surface 22a of the insulator insertion hole 22 of the side plate 20, that is, the contact portion. That is, the step portion 5 of the insulator 50
Just before 5 contacts the contact surface 22a of the insulator insertion hole 22 of the side plate 20, the tip of the tongue piece 25 rides over the locking wall 56a, falls into the concave groove 56, and is positioned near the inside of the locking wall 56a. There is a dimensional relationship to do so.

Therefore, in a state in which the insulator 50 is inserted and attached to the insulator insertion hole 22 of the side plate 20, the stepped portion 55 which is the contacted portion is attached to the contact surface 22a which is the contact portion of the insulator insertion hole 22. Since the insulator 50 is in contact with the insulator 50, 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 and regulates the inside of the locking wall 56a which is a locking portion. The movement of the side plate 20 inward of the cooking chamber 5 is restricted, and the insulator 50 is attached to the side plate 20 securely and without falling off.

Further, since the contact portion is formed by the hole edge peripheral portion 22a of the insulator insertion hole 22, it is not strongly deformed in terms of strength, and the contact portion is not moved toward the cooking chamber 5 side. Only one tongue piece 25 needs to be regulated. Therefore, the structure for attachment is extremely simple and the productivity is also high. Also, the insulator 50 has a simple structure.

Next, the insulator 60 will be described. The insulator 60 is made of the same material as ceramics and the like like the insulator 50, and as shown in FIGS. 2, 5 and 6, the rectangular substrate portion 6 is used.
1 and a tubular portion 62 formed integrally with the substrate portion 61. Then, the base plate 61 has rectangular mounting holes 63, 63 which are located on both sides of the tubular part 62 and into which the mounting pieces 33a, 33a formed on the side plate 30 are inserted.
Are formed. The tubular portion 62 has a cooking chamber 5
A side is opened and an end portion of the pipe 41 is fitted to form a fitting hole 64 as a holding portion for holding the pipe 41, and a cylindrical portion 62 is formed at the center of the bottom of the fitting hole 64.
Also, a connection terminal insertion hole 65 is formed so as to penetrate the board portion 61, and the connection terminal 43 connected to the heating wire 44 is inserted into the connection terminal insertion hole 65. .

To mount the insulator 60 on the side plate 30, the mounting holes 63, 63 of the insulator 60 are made to correspond to the mounting pieces 33a, 33a, and the insulator insertion hole 32 is made to correspond to the cylindrical portion 62. After that, the tubular 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 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, the connection terminals 42 and 43 are connected to both ends of the heating wire 44 in advance, and both connection terminals 42,
One of the connection terminals 42 of 43 (may be the connection terminal 43) is inserted into the connection terminal insertion hole 57a of the insulator 50 and the nut 70 is attached to fix the connection terminal 42 to the insulator 50. Then, connect the other connecting terminal 43 to the pipe 4
1 is inserted from one end side and the connecting terminal 43 is connected to the pipe 41.
The heating wire 44 formed into a coil shape is drawn out from the other end side of the pipe, 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. Fit into the fitting holes 57 and 64. Next, a nut 71 is attached to the connecting terminal 43.
To fix the connection terminal 43 to the insulator 60. In this state, the pipe 41 is elastically held by the insulators 50 and 60 by the restoring force of the heating wire 44 formed in a coil shape, and is integrated and assembled.

Next, the arrangement of the heater 40 assembled as described above in the cooking chamber 5, that is, the attachment to the side plates 20 and 30 will be described. First, the housing 1
The side wall plates 1b and 1c attached to both sides of a are removed to leave the side plates 20 and 30 on both sides of the casing 1a exposed on both sides of the casing 1a. Next, the assembled heater 40 is inserted through the insulator insertion hole 32 formed in the side plate 30 from the side where the insulator 50 is fixed, and the insulator 50 is formed in the side plate 20.
Through. That is, the insulator 50 is the convex portion 52 formed on the insulator 50, the cutout portions 24 and the cutouts 23a to 23 are formed on the insulator insertion holes 22 by the locking ribs 58a to 58c.
Insert it corresponding to c. Then, in the process of inserting the insulator 50, the tongue piece 25 has the locking wall 56a of the convex portion 52.
When the tongue piece 25 is pushed apart and further inserted, the tip end portion of the tongue piece 25 rides over the locking wall 56a and falls into the concave groove 56, and at this time, the step portion 55 of the insulator 50 contacts the insulator insertion hole 22. Contact the surface 22a. As a result, the insulator 50 is attached to the side plate 20 while the side plate 20 is restricted from moving the pipe 41 in the axial direction. In addition, the heater 41
Mounting piece 33 formed on the side plate 30 when inserting the
a and 33a are inserted into the attachment holes 63 and 63 of the insulator 60 attached to the other end side of the heater 40, and when the insulator 50 is positioned or attached to the side plate 20, the attachment pieces 33a and 33a are attached. Since the holes are inserted into the holes 63, 63 in a predetermined state, the insulator 60 is attached to the side plate 30 by bending the attachment pieces 33a, 33a.

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

Next, as shown in FIGS. 2, 3 and 5, after attaching the terminals 80a and 81a connected to one end sides of the lead wires 80 and 81 to the connection terminals 42 and 43, respectively, the nuts 72 and 73 are attached. By attaching it, the heater 40, that is, the heating wire 44 is electrically connected, and the side wall plates 1b and 1c are attached to both sides of the casing 1a. The lead wire 81 is used for the upper and lower heaters 4.
0 connecting terminals 43, 43 are connected, and the upper and lower heaters 4
The lead wires 80, 80 connected to the connection terminals 42, 42 of the insulator 50 of 0 are connected to a power cord 83 from a power source (not shown).
Power is supplied via the.

As described above, the heater 40 is arranged in the cooking chamber 5 by holding both ends of the pipe 41 on both side plates 20 and 30 by the both insulators 50 and 60, 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 tongue piece 25 is formed by cutting and raising the peripheral edge of the insulator insertion hole 22.
Since the contact surface 22a at the peripheral edge portion of the hole 2 is the contact portion that restricts the movement of the insulator 50, even if an external force is applied to the heater 40 in the axial direction, it does not deform and is robust. Further, since the insulator 50 is securely attached to the side plate 20, even if the pipe 41 is damaged, the insulator 5
Zero never falls. In addition, the side plate 20 of the insulator 50
Since the insulator 50 is attached only by inserting the insulator 50 into the insulator insertion hole 22, the attachment is easy. Also, the insulator 60 can be attached to the side plate 30 by simply bending the attachment pieces 33a, 33a inserted into the attachment holes 63, 63 formed in the insulator 60, and therefore the attachment is similarly simple. It is something.

In the above-described embodiment, the side plate 20 is formed on the side plate 20, and the contact portion uses the contact surface 22a at the peripheral edge of the insulator insertion hole 22 as the contact portion.
And the contacted portion formed on the insulator 50 has a step 55 formed at the boundary between the large diameter portion 53 and the small diameter portion 54. Since the step portion 55 is an annular flat surface that comes into surface contact with the flat contact portion, the insulator 50 has the side plate 20.
Since the pipe 41 is held perpendicularly to the plane of the side plate 20 when it is attached to the pipe, it is possible to prevent the pipe 41 from being inclined when assembled.

In the above embodiment, the insulator 5 is used.
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 the same as the shape of the insulator 60 and the side plate 30 to which the insulator 60 is attached, the insulator 50 and the side plate 20 to which the insulator 50 is attached. It may be formed to have the same 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, both insulators 50 and 60 (the same shape as the insulator 50) attached to both ends of the pipe 41 are attached to the 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),
The reflection plates may be attached during the assembling process such as attaching them at the same time.

Further, in the above embodiment, the side plate 2
0 is formed in the hole edge of the insulator insertion hole 22 in the notches 23a to 23c, and the stop ribs 58a to 58c that fit into the notches 23a to 23c are formed in the insulator 50, which are the protrusions 52 and the notches. It can be omitted by preventing the detent by 24. By doing so, the shape of the insulator 50 and the shape of the side plate 20 can be made simpler and more robust.

As shown in FIG. 7, the locking wall 56a provided at the end of the recessed groove 56 formed in the protrusion 52 of the insulator 50 has an eaves-shaped locking portion for covering the end of the recessed groove 56. 56b may be formed. In this case, for example, even if a large impact force is applied to the insulator 50 by accidentally dropping it when carrying the oven toaster A at home or the like, the tip of the tongue piece 25 may be damaged. It is possible to prevent the insulator 50 from being detached from the side plate 20 without being detached from the concave groove 56.

[0038]

According to the first aspect of the present invention having the above-described structure, the side plate for attaching the insulator can be made simple and robust, and the insulator can be surely attached to the side plate. It is possible to prevent the damage of the heater and the risk of electric leakage due to the contact of the lead wire with the side plate due to the damage. In addition to the effect of the invention described in claim 1, the invention described in claim 2 surely prevents contact between the lead wire connected to the connection terminal of the heating wire and the side plate and the like so that the side plate and the lead wire. It is possible to obtain the effect that the insulation with the can be surely achieved.

[Brief description of the drawings]

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

FIG. 2 is a sectional view of the oven toaster according to the above embodiment.

FIG. 3 is a partial cross-sectional view showing how the insulator of the above embodiment is attached to a side plate.

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

FIG. 5 is a partial cross-sectional view showing how the other insulator of the above 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 above embodiment.

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

[Explanation of symbols]

 A oven toaster main body 1 main body 5 cooking chamber 20 side plate of cooking chamber 22 insulator insertion hole 22a contact surface (contact portion) 25 tongue piece 30 cooking chamber side plate 32 insulator insertion hole 40 heater 41 pipe 42, 43 heating wire connection Terminal 44 Heating wire 50 Insulator 55 Step (contacted part) 56a Locking wall (locking part) 57 Fitting hole (holding part) 60 Insulator

Claims (2)

[Claims] 1. A pipe, a heating wire arranged in the pipe, and both ends of the pipe are held by both side plates which constitute both side walls of a cooking chamber formed in the main body and are provided with insulator insertion holes. A heater comprising an insulator, an oven toaster arranged in the cooking chamber while holding the insulator in the insulator insertion hole, in at least one of both side plates of the cooking chamber, a hole edge peripheral portion on the cooking chamber side. An insulator insertion hole having a contact portion, and a tongue piece having a tip portion located in the projection region of the insulator insertion hole and protruding to the side opposite to the cooking chamber side of the side plate, and at least one of the insulators A holding portion for holding the pipe, a connection terminal insertion hole provided in the holding portion for inserting a connection terminal of the heating wire, an abutted portion that abuts the abutting portion, and a cooking chamber of the side plate. The part located on the opposite side of And a locking portion that locks the tongue piece, and inserts the insulator into the insulator insertion hole from the cooking chamber side to bring the contacted portion into contact with the contact portion and also to the lock portion. An oven toaster wherein the tongue is locked and the heater is disposed in a cooking chamber. 2. The insulator comprises a base portion and a ridge formed on an outer peripheral portion of the base portion from one end side located inside the cooking chamber to the other end located outside the cooking chamber. An insulating wall of a lead wire in which an outer peripheral surface side is opened and a locking concave portion having a locking portion on the other end side is formed in this convex portion, and an outer end surface of the locking portion is connected to the connection terminal. The oven toaster according to claim 1, wherein