JPH07204105A - Toaster - Google Patents

Abstract

PURPOSE:To surely hold bread and to always keep a constant distance between two heating elements provided in front and rear and the bread and to improve toasting performance. CONSTITUTION:This toaster is provided with a coil spring 39 whose lower terminal is connected to the recessed part 34b of a bread receiving table 34 located at the outside of a toasting chamber 32, and a ring shape torsion spring 40 whose both terminals are respectively connected to the upper terminal of a bread holding frame 35 and the upper terminal of the coil spring 39 is connected to the ring part of the torsion spring 40.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a toaster used for households and businesses.

[0002]

2. Description of the Related Art In recent years, the number of types of bread has increased and various breads with various thicknesses have been released. Even in a toaster that toasts bread, the difference in baking color between the front and back is small.

A conventional toaster will be described below. FIG. 6 is a central sectional view of a conventional toaster, and FIG. 7 is FIG.
8 is a sectional view taken along line YY, and FIG. 8 is a perspective view of a conventional toaster. In the figure, 1a and 1b are heating elements, 2 is a casing,
3 is a pan holder, 4 is a pan guide hole, 5 is a pan, 6 is a pan guide hole, 7 is a pan holder, 11 is a return spring, and 13 is a pan.
Is a rod of the bread holding frame, 15 is an elastic return spring, 24 is a linear bread holding frame, 25 is a guide rod for the end of the bread holding frame,
Reference numeral 25 'is a protruding portion of 25, and 25''is a bent back portion of 25.

The operation of the toaster having the above structure will be described below. When toasting the bread 5, the bread 5 is first placed on the bread receiving portion 7 of the bread receiving tray 3. Push the bread tray 3 down from the outside. In conjunction with this, the rod 13 of the pan holding frame is attached to the pivot X at the lower end.
1 and X2 are pivoted by the action of the elastic return spring 15 to support the pan. Further, by pressing down the pan holder 3, a switch (not shown) is turned on, and the heating elements 1a and 1b are energized. After a lapse of a predetermined time, a solenoid coil (not shown) is operated to remove a hook (not shown) that holds the pan holder 3 to raise the pan holder 3 and a switch (not shown). Open

[0005]

However, in the above-mentioned conventional structure, since the elastic return spring is always loaded, the elastic return spring is set in the long-term use and two elastic return springs are left and right. Since it is used, the left and right springs have different lengths and loads, which causes a problem that the bread cannot be held properly.

Further, depending on the dimensional variation in the processing of the guide rod 25 ', the bread cradle 3 is sandwiched between the guide rods and the bread cradle 3 does not rise well. There is a danger of not opening.

The present invention solves the above-mentioned problems of the prior art by improving the toast performance by securely holding the bread and always keeping the distance between the two heating elements provided at the front and rear and the bread uniform. Intended to provide a toaster.

[0008]

The first means for achieving this object is to provide two heating elements in parallel inside the main body, and rotate the lower end in the baking chamber between the heating elements. A pair of freely supporting pan holding frames, a pan holder having an elevating mechanism provided between the pan holding frames, a switch that opens and closes by vertical movement of the elevating mechanism, and a control unit that controls toast performance. When the toast performance reaches a set state, the hook that locks the elevating mechanism at the set position is removed, and in the toaster that elevates the elevating mechanism, the lower end is placed in the recess of the bread pedestal located outside the baking chamber. Provided is a toaster in which a coil spring locked is provided, and a ring-shaped torsion spring having both ends locked is arranged at the upper end of the pan holding frame, and the upper end of the coil spring and the ring portion of the torsion spring are connected to each other. That.

In addition to the structure of the first means, the second means provides a toaster in which the shape of the bread receiving portion of the bread receiving stand is an inverted V shape.

Furthermore, the third means provides a toaster in which the ring portion of the torsion spring is wound in a plurality of turns in addition to the structure of the first means.

[0011]

According to the first means of the present invention, when the pan cradle is on the upper side, the coil spring and the ring-shaped torsion spring are configured so that no load is applied thereto, and the pan cradle is pushed down to a predetermined position. At times, a predetermined load is applied, so that each spring does not suffer from settling. Also, when the pan cradle is on top, the coil spring and torsion spring are not loaded, so even if the pan cradle is lowered, the pan holding frame does not start to close halfway, so the pan does not move halfway. It does not get caught in the bread holding frame and suspended inside. Further, since a pair is provided outside the baking chamber, there is no need to worry about variations in spring length and load. Therefore, the bread can be held securely. Further, since the loads of the coil spring and the torsion spring are always applied evenly to the upper end of the bread holding frame, the distance between the front and rear heating elements and the bread becomes constant, and the uneven baking color on the front and back of the bread is eliminated.

Further, according to the second means of the present invention, since the bread receiving portion of the bread receiving tray has an inverted C-shape, the set bread is always centered on the bread receiving tray due to the inclination of the inverted C-shape. Come to come.

According to the third means of the present invention, since the ring portion of the torsion spring is wound a plurality of times, the torsional stress of the ring-shaped torsion spring can be reduced and the durability is further improved.

[0014]

【Example】

(Embodiment 1) An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 31 denotes a heating element, which is provided two in front and behind, and a heating wire is wound around a mica sheet or the like. In the baking room 32, put bread and toast. 33 is an elevating mechanism, 33a is a hook part, 34 is a pan pedestal, which is integrally provided with an inverted C-shaped pan receiving part 34c.
It is fixed by spot welding. Reference numeral 34a is a metal fitting provided on the pan pedestal 34 in the state shown in FIG. Reference numeral 34b is a recessed portion at the tip of the pan holder 34, and 35 is a pan holding frame, which is formed of a plurality of bars. The lower end 35a and the upper end 35b are formed by spot welding.
35c is a protrusion. As shown in FIGS. 2 and 3, the relationship between the metal fitting 34a of the pan cradle 34 and the bar material of the bread holding frame 35 is such that when the pan cradle 34 is located in the upper portion, the metal fitting 34
Spread the bread holding frame 35 to both sides with a and open the bread stand 34.
The metal fitting 34a has such a dimensional relationship that it does not come into contact with the bar when it is located in the lower part. The bread is held between the bread holding frames 35. 36 is a switch, 36a is a fixed contact, 36b
Is a movable contact, 36c is a movable piece, and 36d is an elastic switch spring. 37 is a control unit for controlling the toast performance,
38 is a solenoid and 38a is a movable plate. A coil spring 39 has a lower end 39a hooked and locked in the recess 34b. 39b is the upper end. Reference numeral 40 is a torsion spring, 40a is a ring portion thereof, and 40b is both ends thereof, and they are held between the projection 35c at the upper end of the pan holding frame 35 and the folding portion. Also, the upper end 39 of the coil spring 39
b and the ring portion 40a of the torsion spring 40 are connected. 41 is a main body which also serves as an outer shell. The upper chassis 42 also serves as a pan guide. The side chassis 43 is formed on the left and right, and is held by twisting a claw with the upper chassis 42. A lower chassis 44 is held by spot welding with the side chassis 43. Reference numeral 45 holds the lower chassis 44 and the like under the main body with screws (not shown). 45a is its foot. 46 is a lifting knob. Reference numeral 47 is a burn color adjusting knob, which is connected to the controller 37. An elevating lever guide bar 48 serves as a guide for the elevating mechanism 33. Both ends are side chassis 43
It is held in the cut-and-raised part. 49 is a scrap receiver that can be opened and closed. Reference numeral 50 denotes an elevating spring, which urges the elevating mechanism 33 upward.

The operation of the toaster constructed as above will be described with reference to FIGS. 1, 2 and 3. First, when the bread is toasted, it is set on the bread stand 34 in the baking chamber 32. Next, the lifting knob 46 is pushed down to a predetermined position. By pushing down, lift mechanism 3
The pan cradle 34 integrated with the unit 3 is also lowered to a predetermined position. At this time, the hook portion 33a of the lifting mechanism 33 is locked to the lower end of the movable plate 38a of the solenoid 38. At the same time, the switch spring 36d and the movable piece 36c are lowered, the movable contact 36b is moved, the switch 36 is turned on, and the heat generating element 31 is energized. When the toast baking color reaches the set state, the control unit 37 operates the solenoid 38 to remove the hook 33a that locks the elevating mechanism 33, raises the bread tray 34, and opens the switch 36.

The coil spring 39 locked in the recess 34b of the pan holder 34 by the operation of pushing down the lifting mechanism 33.
A tensile load is applied to the ring-shaped torsion spring 40, and a force is applied to the ring portion 40a of the ring-shaped torsion spring 40 so as to move the upper end 35b of the pan holding frame 35 toward the center with the lower end 35a as a fulcrum. Therefore, bread holding frame 3
The bread in 5 is held equidistant from the front and rear heating elements 31. The coil spring 39 and the torsion spring 40 are set so that the load is applied only when the elevating mechanism 33 is held at a predetermined position. Therefore, the settling of each spring does not occur.

Even if the bread holder 34 is lowered, the bread holding frame 35 does not start to be closed halfway, so that the bread is not sandwiched between the bread holding frames 35 and suspended in the middle. Further, since a pair is provided outside the baking chamber 32, there is no need to worry about variations in spring length and load. The coil spring 39,
Since the load of the torsion spring 40 is always applied evenly to the upper end of the bread holding frame 35, the distance between the front and rear heating elements 31 and the bread becomes constant, and uneven baking color on the front and back of the bread is eliminated.

As described above, according to the present embodiment, the lower end 39a of the coil spring 39 is hooked and locked in the recess 34b of the pan holder 34. Further, a torsion spring 40 having a ring portion 40a is provided, and both ends 40b of the torsion spring 40 are attached to the pan holding frame 3
5 is held at the upper end 35b. The coil spring 39
Since the upper end 39b of the pan and the ring portion 40a of the torsion spring 40 are connected to each other, by pushing down the elevating mechanism 33 to a predetermined position, the coil spring 39 locked in the concave portion 34b of the pan cradle 34 is attached. A tensile load is applied, and a force is applied in the direction in which the ring portion 40a of the ring-shaped torsion spring 40 is narrowed. As a result, the upper end 35b of the pan holding frame 35 functions to move toward the center with the lower end 35a as a fulcrum. Therefore, the bread in the bread holding frame 35 is held at the center between the heating elements 31.

The coil spring 39 and the torsion spring 40 are set so that the load is applied only when the elevating mechanism 33 is held at a predetermined position. Therefore, the settling of each spring does not occur. In addition, the bread is not sandwiched between the bread holding frames 35 during the lowering of the bread tray 34 to be suspended in the middle. Further, since a pair is provided outside the baking chamber 32, there is no need to worry about variations in spring length and load. Further, the load of the coil spring 39 and the torsion spring 40 is always the pan holding frame 35.
Since it is evenly applied to the upper end of the bread, the distance between the front and rear heating elements 31 and the bread becomes constant, and the unevenness of the baking color on the front and back of the bread is eliminated.

Further, the bread receiving portion 34c of the bread receiving table 34
Since the bread is shaped like an inverted C, the bread that has been set always comes to the center of the bread tray 34 due to the inclination of the bread tray 34c, and the distance from the heating element 31 is even on the lower side of the bread. The uneven baking of the front and back of the bread is eliminated.

(Embodiment 2) A second embodiment of the present invention will be described below with reference to the drawings. In FIGS. 4 and 5, 39 is a coil spring, and 39a is a recess 34 at its lower end.
It is hooked and locked on b. 39b is the upper end.
Reference numeral 40 is a torsion spring, 40a is a ring portion thereof, and 40b is both ends thereof, and they are held between the projection 35c at the upper end of the pan holding frame 35 and the folding portion. Coil spring 3
The upper end 39b of 9 and the ring portion 40a of the torsion spring 40 are connected. The above is the same as the configuration of FIG. 1, FIG. 2 and FIG. The difference from FIGS. 1, 2, and 3 is that the ring portion 40 a of the torsion spring 40 is wound in a plurality of turns and connected to the coil spring 39.

The operation of the toaster having the above structure will be described below. First, when the bread is toasted, it is set on the bread stand 34 in the baking chamber 32. Next, the lifting knob 46 is pushed down to a predetermined position.
By pushing down, the pan receiving stand 34 integrated with the elevating mechanism 33 is also lowered to a predetermined position. At this time, the hook portion 33a of the lifting mechanism 33 moves the movable plate 38a of the solenoid 38.
Is locked at the lower end of. At the same time, the switch spring 36
d, the movable piece 36c also moves down, the movable contact 36b moves,
The switch 36 is turned on, and the heating element 31 is energized.

When the toast baking color reaches the set state, the control section 37 operates the solenoid 38 to remove the hook 33a which holds the elevating mechanism 33, raises the bread tray 34 and opens the switch 36. To do.

By pushing down the lifting knob 46,
Coil spring 3 locked in the recess 34b of the pan holder 34
9. A tensile load is applied to 9 and a force is applied in the direction of purging the ring portion 40a of the ring-shaped torsion spring 40. As a result, the upper end 35b of the pan holding frame 35 functions to move toward the center with the lower end 35a as a fulcrum. . At this time, torsion spring 4
Torsional stress corresponding to 0 is applied to 0. Since the ring portion 40a of the torsion spring 40 is wound a plurality of times, for example, if the ring portion 40a is double wound, the torsion stress of the ring-shaped torsion spring 40 can be reduced to about 70% as compared with that of one winding. Therefore, the durability is further improved.

As described above, according to this embodiment, since the ring portion 40a of the torsion spring 40 is wound in plural turns and connected to the coil spring 39, the torsion stress of the ring-shaped torsion spring 40 is reduced. Since it can be done, the durability is further improved.

[0027]

As described above, according to the present embodiment, by pushing down the elevating mechanism to a predetermined position, a tensile load is applied to the coil spring locked in the recess of the pan pedestal, so that the ring-shaped torsion spring A force is applied in the direction of purging the ring portion, and as a result, it functions to move the pan holding frame toward the center with the lower end as the fulcrum. Therefore, the bread in the bread holding frame is always held at the center between the front and rear heating elements.
The coil spring and the torsion spring are set so that the load is applied only when the lifting mechanism is held at a predetermined position. Therefore, the settling of each spring does not occur. Moreover, the bread is not sandwiched between the bread holding frames and is suspended in the middle.

Since a pair is provided outside the baking chamber, there is no need to worry about variations in spring length and load. Further, since the loads of the coil spring and the torsion spring are always evenly applied to the upper end of the bread holding frame, the distance between the front and rear heating elements and the bread becomes constant, and uneven baking of the front and back sides of the bread is eliminated.

Furthermore, since the bread receiving portion is formed in an inverted V shape, the lower side of the bread is always located at the center of the bread receiving table, the distance between the heating element and the bread is constant, and the baking of the front and back sides of the bread is performed. The unevenness disappears.

Since the ring portion of the torsion spring is wound a plurality of times and connected to the coil spring, the durability is further improved.

[Brief description of drawings]

FIG. 1 is a transverse sectional view of a toaster according to a first embodiment of the present invention.

FIG. 2 is a vertical sectional view of the toaster in a normal state.

FIG. 3 is a vertical sectional view of the toaster in operation.

FIG. 4 (a) is a vertical sectional view of a toaster according to a second embodiment of the present invention in a normal state. (B) A sectional view of essential parts of the toaster

FIG. 5 is a vertical sectional view of the toaster in operation.

FIG. 6 is a cross-sectional view of a conventional toaster.

FIG. 7 is a vertical sectional view of a conventional toaster.

FIG. 8 is a perspective view of a conventional toaster.

[Explanation of symbols]

 31 Heating Element 32 Baking Chamber 33 Elevating Mechanism 33a Hook Part 34 Bread Holder 34b Recess 34c Bread Holder 35 Pan Holding Frame 36 Switch 37 Control Unit 39 Coil Spring 40 Torsion Spring 40a Ring Part 41 Main Body

Claims (3)

[Claims] 1. A pair of bread holding frames, each of which has a lower end rotatably pivotally supported in a baking chamber between the heating elements, provided with two heating elements arranged in parallel inside a main body, and the bread holding frame. A pan cradle with an elevating mechanism provided between them, a switch that opens and closes by vertical movement of the elevating mechanism, a control unit that controls the toast performance, and the elevating mechanism to the set position when the toast performance reaches a set state. In a toaster that removes a hook for locking and raises the lifting mechanism, a coil spring having a lower end locked in a recess of the bread cradle located outside the baking chamber is provided at the upper end of the bread holding frame. A toaster in which ring-shaped torsion springs having both ends locked are arranged and the upper end of the coil spring and the ring portion of the torsion spring are connected. 2. The toaster according to claim 1, wherein the shape of the bread receiving portion of the bread receiving stand is an inverted C-shape. 3. The toaster according to claim 1, wherein the torsion spring has a plurality of ring portions.