JPH0351016A - Toaster - Google Patents

Abstract

PURPOSE:To nearly unify the baked-up state on both faces by locating the inserted bread at the center section between a pair of mating heaters. CONSTITUTION:A piece of bread to be baked up is mounted on a bread tray 17 moved to the insertion position, then the bread tray 17 is moved to the baking-up position. As the bread tray 17 is moved, the elastic force of the second elastic member 35 is increased. When the elastic force of the second elastic member 35 becomes the elastic force of the first elastic member 33 or above, a cam body 31 is moved in the same direction as the moving direction of the bread tray 17 against the elastic force of the first elastic member 33. Pins of net bodies 9 and 11 are slid on cam holes 31a of the cam body 31, thus net bodies are rotated in the approaching direction to pinch the bread. The bread mounted on the bread tray 17 is centered to be located at the center section between heaters 7, and its both faces are baked up nearly uniformly.

Description

[Detailed description of the invention] [Industrial application field l The present invention relates to a toaster, and more particularly, to a toaster that toasts put bread to a substantially uniform degree of toasting. [Prior art]

Conventional toasters have a frame that corresponds to the inside of the planar heaters, which are arranged to face each other at a required interval.
The mesh body, whose lower end is rotatably supported, is always urged by the elastic force of the wire spring so that its upper end is released. Further, at the lower end of the net, one end is fixed and the other end is a free end, and an elastic member having a spring force greater than the elastic force of the wire spring is attached, and the bread tray is moved to a predetermined position by an operating lever. When the bread tray and the free end of the elastic member come into contact with each other, the net body is swung so that its upper ends approach each other against the elastic force of the elastic member, thereby sandwiching the bread. As a result, the pan is located in the middle part between a pair of opposing heaters. This allows the bread to be baked almost evenly on both sides.

[Problem to be solved by the invention]

However, in the above-mentioned conventional toaster, the upper end portions of the mesh independently swing against the elastic force of the wire spring, which is weaker than the elastic force of the elastic member, and the center portion between the pair of opposing heaters is Because the structure is designed to position the bread, if a single hand of bread is placed on the bread tray in a biased state, the sandwiching action of the independently rotating mesh will not allow the bread to be placed in the opposite direction. The problem is that the pair of heaters cannot be located at the center of each other, resulting in uneven baking on both sides. The present invention was invented in order to solve the above-mentioned conventional drawbacks, and its purpose is to provide a toaster that can toast both sides of bread that has been put into it to a substantially uniform degree of toasting. There is a particular thing.

[Means for Solving the Problems] Therefore, the present invention has a base end rotatably supported inside a pair of heaters that are arranged to face each other with a required interval in a case. Between the nets, the bread insertion position,
In a toaster comprising a bread tray movably supported between a bread baking position and a bread baking position, the toaster is movably supported in the same direction as the moving direction of the bread tray and is engaged with a pin provided at one end of the net body. a cam body having a cam hole for rotating the net bodies in directions toward and away from each other;
A first elastic member that normally biases the cam body toward the bread loading position of the bread tray; and the elastic force of the first elastic member that biases the cam body as the bread tray moves toward the bread baking position and a second elastic member that is larger and moves the cam body toward the baking position against the elastic force of the first elastic member.

[Action of the invention]

Since the present invention is configured as described above, when bread to be baked is placed on the bread tray that has been moved to the loading position and the bread tray is moved to the baking position, the bread tray is moved to the baking position. The elastic force of the second elastic member is increased. The elastic force of the second elastic member is equal to the elastic force of the second elastic member.
When the elasticity of the elastic member exceeds the elasticity of the first elastic member, the cam body is moved in the same direction as the moving direction of the bread tray against the elastic force of the first elastic member. At this time, the pins of the net slide through the cam holes of the cam body, so that the nets rotate toward each other and sandwich the bread. This allows I! to appear on the bread tray! By centering the placed bread so that it is located in the middle between the heaters, both sides of the bread are baked almost uniformly. Also,
When the bread tray is moved from the baking position to the feeding position as bread is baked, the elastic force of the second elastic member gradually becomes weaker than the elastic force of the first elastic member. As a result, the cam body moves in the same direction as the moving direction of the bread tray due to the elastic force of the first elastic member, and is rotated in the direction of separating the net bodies from each other, thereby releasing the sandwiched state of the bread and Allows for extraction.

【Example】

An embodiment of the present invention will be described below with reference to the drawings. Fig. 1 is a perspective view schematically showing the toaster, and Fig. 2 is a perspective view showing the centering mechanism of the bread.The outer case 3 of the toaster 1 is made of heat-resistant resin such as phenol resin, An input opening 3a is formed in the section so as to extend in the longitudinal direction. A box-shaped metal case 5 with an open top end is built into the outer case 3, and a planar heater 7 is opposed to the long side 5a of the metal case 5 at a required interval and is insulated. are installed respectively. A pair of opposing mesh bodies 9 and 11 are rotatably supported on the short side surface 5b of the metal case 5 at a required interval and at their base ends. A slide hole 13 is formed in the middle of one of the short sides 5b so as to extend in the vertical direction, and a support frame 14 is attached to the outside of the short side 5b corresponding to the slide hole 13. The support frame 14
A guide shaft 15 having an axis in the vertical direction is attached at a position corresponding to the slide hole 13. A base end portion of a bread tray 17 inserted through the slide hole 13 and positioned between the nets 9 and 11 is supported by the guide shaft 15 so as to be slidable in the vertical direction. That is, the bread tray 17 is moved between an upper position where bread can be loaded and a lower position where the bread placed on the bread tray 17 is opposed to the heater 7. A feed screw 19 having an axis in the vertical direction is rotatably supported by the support frame 14, and a nut portion 21 provided at the base end of the bread tray 17 is engaged with the feed screw 19. Further, an electric motor 23 is connected to one shaft end of the feed screw 19.
They are connected via a gear 25, and the feed screw 19 is rotated in both forward and reverse directions as the electric motor 23 is driven. A slit 27a/2 provided at the top of the short side 5b
Pins 9a and 11a provided at the upper ends of the mesh bodies 9 and 11, respectively, are slidably supported on the slit 7b.
7a and 27b allow rotation of the upper end portions of the nets 9 and 11. A support shaft 29 having an axis in the vertical direction is attached to the upper arm 14a of the support frame 14, and a cam body 31 is supported on the support shaft 29 so as to be slidable in the vertical direction. A pair of left and right cam holes 31a are formed in the cam body 31 and extend in an inclined state so that the upper end is located toward the center and the lower end is located outside, and the pins 9a and 11a slide into the respective cam holes 31a. movably supported. A compression spring 33 as a first elastic member is attached to the support shaft 29 between the upper arm 14a and the lower end of the cam body 31, and the elastic force of the compression spring 33 keeps the cam body 31 upward. is biased in the direction. Furthermore, an operating compression spring 35 as a second elastic member is attached between the base end of the bandlay 17 and the cam body 31. The operating compression spring 35 has a stronger elastic force than the compression spring 33 when the pan 1-lay 17 is moved to the upper position, and one end thereof is supported by the 7 langes 31b of the cam body 31, and the other end is supported by the 7 langes 31b of the cam body 31. The guide shaft 1 extends downward through the operating compression spring 35 itself and corresponds to the base end of the bread tray 17.
It is supported so that it can move to 5. An upper limit switch 37 is located above the bread tray 17, and a lower limit switch 3 is located below the bread tray 17.
9 is attached with the mounting number, and each limit switch 37.
39 detects the movement position of the bread tray 17. FIG. 3 is an electrical block diagram showing the outline of control of the toaster 1, and a start switch 43, an upper limit switch 37, and a lower limit switch 39 are connected to the control circuit 41, respectively. and the start switch 43
When turned on, the control circuit 41 rotates the electric motor 23, for example, clockwise, and moves the bread tray 17 to the lower position. Further, when the bread tray 17 moves to the lower position, the control circuit 41 interrupts the rotational drive of the electric motor 23 based on the detection signal from the lower limit switch 39, causes the heater 7 to energize and heat, and Activate the circuit 41a. This counter circuit 41a counts up or counts down by 1, and outputs a measurement signal when the counted value reaches a predetermined number (time) set by the setting circuit 45. When the measurement signal is output from the counter circuit 41a, the control circuit 41 interrupts the energization of the heater 7, and rotates the electric motor 23 in the counterclockwise direction to move the bread tray 17 to the upper position. Move to. Furthermore, when the bread tray 17 moves to the upper position,
The control circuit 41 interrupts the rotational drive of the electric motor 23 based on the detection signal from the limit switch 37, and resets the counter circuit 41a as necessary. Next, the operation of the toaster 1 configured as described above will be explained with reference to FIGS. 4 and 5. FIG. 4 is a perspective view showing the centering state, and FIG. 5 is a perspective view showing the centering state of thick bread.
After placing the bread 51 on the bread tray 17 that has moved to the upper position, when the start switch 43 is pressed down,
For example, the feed screw 1 is driven by the electric motor 23 that rotates in the forward direction.
9 rotates in a predetermined direction to move the bread tray 17 to the lower position. At this time, just before the bread tray 17 reaches the lower position, the actuation compression spring 35 is pushed down as the bread tray 17 moves, and the elastic force of the actuation compression spring 35 exceeds the elastic force of the compression spring 33. When the cam body 31 is moved downward against the elastic force of the compression spring 33, the net bodies 9 and 11 are moved by the pins 9a and 11a sliding in the cam holes 31a of the cam body 31. They are rotated in a direction in which they approach each other. As a result, the bread 51 placed on the bread tray 17 is
11 so that the upper end thereof is located at an intermediate portion between the heaters 7 . On the other hand, when the lower limit switch 39 is turned on as the bread tray 17 moves to the lower position, the control circuit 41
The drive of the electric motor 23 is interrupted to stop and hold the bread tray 17 in the lower position, and the heater 7 is heated by electricity. Further, the control circuit 41 activates the counter circuit 41a based on the signal from the F limit switch 39 to count down or count up the h run to count the preset baking time. When the counter circuit 41a counts a predetermined time, the control circuit 41a
is the heater 7 based on the signal from the counter circuit 41a.
At the same time, the electric motor 23 is rotated in the opposite direction to move the bread tray 17 to the upper position. At this time, immediately after the tray 17 starts moving to the upper position, Li2 is moved, and the elastic force of the operating compression spring 35 becomes weaker than the elastic force of the compression spring 33 due to the pan tray 17 moving upward, so the cam body 31 The compression spring 3
It is moved upward by the elastic force of 3. As a result, the net body 9
When the pins 9a and 11a slide in the cam holes 31a of the cam body 31, the pins 9a and 11 are rotated in a direction to separate them from each other, and the bread is released from being held by the net bodies 9 and 11. When the bread tray 17 is moved to a predetermined upper position and the upper limit switch 37 is turned on as it comes into contact with the bread tray 17, the control circuit 41 controls the electric motor 23 based on the signal from the upper limit switch 37. The driving of the counter circuit 41a is interrupted and the counter circuit 41a is reset. In addition, as shown in FIG. 5, in the case of baking thick bread 51, the adjacent width of the upper ends of the nets 9 and 11 is
Although it is less than the case shown in FIG. 4, it is possible to absorb the difference in the proximity width of the nets 9 and 11 according to the compression force of the operating compression spring 35. Therefore, even if the breads 51 have different thicknesses, the breads 51 can be reliably centered. In this way, in this embodiment, the placed bread 51 can be reliably centered during baking, and the bakedness on both sides can be made almost uniform. In the above explanation, bread is automatically baked by moving the bread tray 17 up and down as the electric motor 23 is driven, but by manually operating the operating lever, the bread tray 17 is moved to the lower position against the elastic force of the elastic member. At the same time, the bread tray 17 is locked at that position by, for example, a bimetal, and then the locked state at the lower position is released according to a predetermined baking time, and the bread tray 17 is moved upward by the elastic horns of the bony member. The centering mechanism according to the present invention may be applied to a conventional bread tray operation mechanism that allows bread trays to be moved to a certain position and taken out.

【Effect of the invention】

Therefore, the present invention makes it possible to provide a toaster in which the loaded bread can be placed in the center between a pair of opposing heaters and can be toasted almost uniformly on both sides.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing the outline of the toaster, Fig. 2 is a perspective view showing the bread centering mechanism, Fig. 3 is an electrical block diagram showing the outline of the control of the toaster, and Fig. 4 shows the centering state. FIG. 5 is a perspective view showing a state in which thick bread is hinted. In the figure, 1 is a toaster, 3 is an outer case, 5 is a metal case, 7 is a heater, 9 and 11 are mesh bodies, 17 is a bread tray, 3
1 is a cam body, 31a is a cam hole, 33 is a compression spring as a first bone member, and 35 is an operating compression spring as a second elastic member.

Claims (1)

[Claims] 1. A pan is placed between a mesh member whose base end is rotatably supported inside a pair of heaters that are arranged to face each other at a required interval in a case. In a toaster comprising a bread tray movably supported between a loading position and a bread baking position, the toaster is movably supported in the same direction as the moving direction of the bread tray, and has a pin provided at one end of the net body. a cam body having a cam hole that engages and rotates the mesh bodies toward and away from each other; and a first elastic member that always biases the cam body toward the bread loading position of the bread tray. As the bread tray moves in the direction of the bread baking position, its elastic force becomes larger than the elastic force of the first elastic member, and the cam body is panned against the elastic force of the first elastic member. A toaster comprising: a second elastic member that moves in the direction of the toasting position.