JPH03280909A - Motor-driven toaster - Google Patents

Abstract

PURPOSE:To improve the comfortableness to use by automatically toasting and extracting bread only via the action of a start switch. CONSTITUTION:When a rotating member 41 is rotated by the drive of an electric motor 39 and a bread tray 35 is lowered by a crank lever 43, a contact member 29 is also lowered. When the elastic forces of elastic members 31, 33 fitted between the member 29 and a cam body 23 become larger than the elastic force of an elastic member 25, the cam body 23 is pushed down, upper end sections of net bodies 11, 13 are moved near to each other, and the bread on the tray 35 is pinched and located at the middle section of a planar heater. When the tray 35 is moved to the bottom dead center, switch members 47, 49 are turned on, the planar heater is excited, and the bread is toasted. The member 41 is rotated by the motor 39 driven again, the members 47, 49 are turned off, the planar heater is de-excited, the tray 35 is moved upward, the cam body is moved upward, and the net bodies 11, 13 are separated to release the pinching of bread.

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to an electric toaster that automatically takes out bread after toasting it.

[Prior art]

In a conventional toaster, when the operating lever is pushed down against the elastic force of the elastic member, the bread tray on which bread is placed is moved to a lower position. At this time, the bread tray or the operating lever is locked by the locking member and held in the depressed state, and the sheet heater is energized to toast the bread. When a predetermined toasting time has elapsed, the locking member releases the lock on the bread tray or the operation lever, and the elastic force of the elastic member pushes the bread tray upwards and cuts off the electricity to the sheet heater. Ru.

[Problem to be solved by the invention]

However, in the conventional toaster described above, the operating lever had to be pressed down with a strong force that resisted the elastic force of the elastic member every time bread was toasted, resulting in poor operability. Further, when a large external force is applied to the main body when the bread tray or the operating lever is locked, there is a risk that the locked state will be released by this external force and the bread tray will be moved to the upper position. In such a case, in order to continue toasting, the control lever must be pressed down again.
The timer is restarted by pressing down on the control lever. However, since the sheet heater itself is heated to a high temperature due to previous energization, there is a problem that the bread may be toasted excessively. Furthermore, according to electrical safety standards for toasters, when the bread tray moves to the upper position, it is necessary to cut off the electricity to the sheet heater and to disconnect both ends of the sheet heater. In this case, it is necessary to provide two switches that turn on or off when the bread tray or control lever is pressed down, but due to electrical insulation, each switch must be placed a certain distance apart, and the toaster As the size itself increased, the structure became more complex. The present invention was invented to solve the above-mentioned conventional drawbacks, and its purpose is to automatically toast bread by simply operating a start switch, and then
The purpose of the present invention is to provide a new electric toaster that can be taken out. Another object of the present invention is to provide an electric toaster that can reliably continue toasting even when an external force is applied to the main body during toasting. Furthermore, another object of the present invention is to provide a highly safe electric toaster by reliably cutting off power to the sheet heater and disconnecting both ends of the sheet heater when the bread tray moves to the upper position. It's about doing.

[Means to solve the problem]

For this reason, the present invention is arranged between a pair of opposing sheet heaters and a pair of sheet heaters, the lower end of which is rotatably supported, and the upper end of which is movable in the front-rear direction perpendicular to the up-down direction. It has a pair of supported nets that face each other, a pan tray that is supported to be movable in the vertical direction between the pair of nets, and a cam hole that slides into the upper end of each net so that it can be moved up and down. a supported cam body, a first elastic member that always moves the cam body in a direction in which the upper ends of the net body are separated from each other, and a first elastic member that moves the cam body to a lower position together with the bread tray when the bread tray is moved toward the toasting position. a moving abutting member;
a second elastic member that is attached to the abutment member and the cam body and moves the cam body in a direction in which the net bodies approach each other against the elastic force of the first elastic member; and a second elastic member that is connected to one end of the bread tray. a rotating member and a crank lever, an electric motor that rotates the rotating member in a predetermined direction, and an electric motor that contacts one end of the rotating member when the bread tray is moved to the toasting position, and one end of each sheet heater. and a second switch member that contacts the other end of the rotating member and connects the other end of the sheet heater to the power source when the bread tray is moved to the toasting position. It is characterized by

[Action of the invention]

When the rotating member rotates in a predetermined direction as the electric motor is driven and the bread tray is moved downward by the crank bar, the abutting member is also pushed down by the bread tray. At this time, when the elastic force of the second elastic member attached between the contact member and the cam body exceeds the elastic force of the first elastic member, the cam body Pushed down against the force. As a result, the upper ends of the nets move toward each other, and the upper ends of the bread placed on the bread tray are held between the nets and placed in the middle of the planar heater. When the bread tray is moved to the bottom dead center, the first and second switch members are turned on, and the first switch member turns on one end of the sheet heater, and the second switch member turns on the sheet heater. The other end is connected. As a result, the sheet heater is energized and the bread on the bread tray is toasted. When the bread is toasted, the rotating member is rotated in a predetermined direction by the electric motor that is driven again and the first and second switch members are turned off, thereby disconnecting both ends of the sheet heater. . Further, when the bread tray is moved upward as the rotating member rotates, the elastic force of the first elastic member becomes greater than or equal to the second elastic member, and the elastic force of the first elastic member causes The cam body is moved upward. As a result, the upper ends of the nets rotate in a direction that separates them from each other, and the sandwiching of the toasted bread is released. When the bread tray returns to the upper position, the electric motor stops driving and toasting ends.

【Example】

Hereinafter, the present invention will be explained according to examples. Figure 1 is a perspective view of the road body schematically showing the electric toaster;
The figure is a perspective view showing the vertical drive mechanism of the bread tray. The main body frame 3 of the electric toaster 1 is formed by bending a metal plate into a box shape, and has a charging opening 5 on its upper end surface.
is formed. Inside the main frame 3, there are a pair of planar heaters 7 and 9 facing each other with a required interval (one planar heater 7 is shown in FIG. 1, and both planar heaters 7 and 9 are shown in FIG. 3). ) are installed along the front and back plates of the unit in an electrically insulated manner. Also, inside the main body frame 3, the lower end shafts of a pair of mesh bodies 11 and 13 facing each other at a required interval are connected to sheet heaters 7 and 9.
It is rotatably supported in a non-contact state. The nets 11 and 13 are supported so that they can be moved in the direction of sliding toward or away from each other by sliding the upper ends of one of the nets 11 and 13. Support plates 17a and 17b are attached to the outer surface of the side plate 15 at predetermined intervals in the vertical direction.
A support shaft 19 having an axis in the vertical direction is attached to the support shaft 17b so that its lower end reaches the bottom plate 21 of the main body frame 3. A substantially triangular cam body 23 is supported movably in the axial direction on the support shaft 19 corresponding to the space between the support plates 17a and 17b, and the cam body 23 has cam holes 23a and 23.
b is formed along the oblique side. And these cam holes 23a and 23b have mesh bodies 11 and 1.
The upper end shafts 11a and 13a of No. 3 are supported in a slidable manner. Support shaft 1 located between support plate 17b and cam body 23
A compression spring 25 as a first elastic member is attached to 9, and the elasticity of this compression spring 25 constantly urges the cam body 23 upward. Further, an operating block 27 and a push-down plate 29 as an abutting member are supported on the support shaft 19 located below the support plate 17b so as to be slidable in the axial direction, and one end of the push-down plate 29 has a cam body. Tension springs 31 and 33 as second elastic members hooked to 23
The other ends of each are latched. These tension springs 31・
33 is pulled by the movement of the push-down plate 29, and when its elastic force exceeds the elastic force of the compression spring 25, the cam body 2
Move 3 downward. A bread tray 35 is attached between the planar heaters 7 and 9 and extends horizontally with one end attached to the operating block 27. A standing plate 37 is attached to the bottom plate 21, and an electric motor 39 is attached to the plate 37. A rotating arm 41 as a rotating member is attached to the rotating shaft of the electric motor 39, and one end of the rotating arm 41 has one end rotatably supported by the actuating block 27, and the other end of a crankper 43. is rotatably supported. Further, an abutting piece 41a is attached to one end of the rotating arm 41, and a cam member 45 is attached to the other end. Two switches 47-49 are mounted on the plate 37 so that they are turned on simultaneously when the rotating arm 41 is rotated to the vertical position and the crankper 43 is pushed down to the bottom dead center. There is. A main body case 51 molded from heat-resistant resin is attached to the main body frame 3, and a charging opening 51a is formed in the upper end surface of the main body case 51 so as to communicate with the charging opening 5. In addition, the main body case 51
A start switch 53 and a toast time setting switch 55 are provided at the lower front of the . FIG. 3 is an electrical block diagram of the electric toaster. Planar heaters 7 and 9 and a switch 47 connected in series are connected between the AC power sources via a relay switch 57. Similarly, an electric motor 39 is connected between the AC power sources via a relay switch 59. Then, the relay switches 57 and 59 are turned ON and OFF.
/-61-63 are connected to the control circuit 65. Further, a switch 49 is connected to the control circuit 65 . Further, a start switch 53 and a setting switch 55 are connected to the control circuit 65, and when the start switch 53 is turned on, the control circuit 65 magnetically drives the relay 63, turns on the relay switch 59, and starts the electric motor 39. drive the rotation. When the rotating arm 41, which rotates in a predetermined direction as the electric motor 39 is driven, reaches the bottom dead center and the switch 49 is turned on, the control circuit 65
The magnetic drive of the relay 63 is interrupted to stop the electric motor 39, and the relay 61 is magnetically driven to turn on the relay switch 57 to connect one ends of the planar heaters 7 and 9. Further, the control circuit 65 activates the second timer 65b by turning on the switch 49. On the other hand, when the switch 47 is turned on together with the switch 49 by the rotating arm 41 that has moved to the bottom dead center, the sheet heater 7φ
The other end of 9 is connected to an AC power source. As a result, the planar heaters 7 and 9 are energized and generate heat. When the second timer 65b counts a predetermined time, the control circuit 65 interrupts the magnetic drive of the relay 61, disconnects one end of the sheet heaters 7 and 9, and disconnects the relay 63.
is magnetically driven to rotationally drive the electric motor 39. When the rotating arm 41 is rotated in a predetermined direction by the electric motor 39, the switch 49 is turned off and the first timer 65a is activated. Further, the switch 47 which is turned off in synchronization with the switch 49 disconnects the other ends of the sheet heaters 7 and 9 from the AC power source. When the first timer 65a reaches a predetermined time (the time when the rotating arm 41 reaches the top dead center), the control circuit 65 interrupts the magnetic drive of the relay 63 and turns off the relay switch 57. The drive of the electric motor 39 is stopped. When the setting switch 55 is operated, the control circuit 65 increments or decrements the set time of the second timer 65b.Next, the operation of the electric toaster 1 configured as described above is shown in FIG. This will be explained according to FIGS. 4 and 5. 4 and 5 are explanatory diagrams showing the operation. When the start switch 53 is turned off, the cam member 45 attached to the rotating arm 41 is moved to the lower position as shown in FIG.・49 is kept in the OFF state. Further, as described above, since one end of the rotating arm 41 on which the crank par 43 is supported has been moved to the upper position, the actuation block 27 is located in the upper position, and the bread tray 3
5 has been moved to the input position. Furthermore, since the push-down plate 29 is not pushed down by the operating block 27 that has moved to the upper position, the cam body 23 is pushed upward by the elastic force of the compression spring 25. As a result, the upper end shafts 11a and 13a are moved to the lower ends of the cam holes 23a and 23b, so that the upper ends of the nets 11 and 13 are spaced apart from each other by a width that allows the bread to be toasted to be inserted therein. In the above state, when the start switch 53 is turned on after placing the bread to be toasted on the bread tray 35, the control circuit 65 magnetically drives the relay 63, turns on the relay switch 59, and starts the electric motor. 39 is driven to rotate. As a result, the rotating arm 41 is rotated in a predetermined direction, and the crankper 43 supported by the rotating arm 41 pushes the operating block 27 and the bread tray 35 down toward the toast position. When the actuation block 27 is moved to a predetermined position, the push-down plate 29 is pushed down and the tension springs 31 and 3
The elastic force of No. 3 gradually increases. When the elastic force of the tension springs 31 and 33 exceeds the elastic force of the compression spring 25, the cam body 23 is moved downward. As a result, as shown in FIG.
The upper end of the bread placed on the plate 5 is clamped. Then, as shown in FIG. 5, when one end of the rotating arm 41 reaches the bottom dead center and the switches 47 and 49 are turned on,
The control circuit 65 switches the relay 6 by the signal from the switch 49.
3, the electric motor 39 is stopped, and the second timer 65b is activated. Further, the control circuit 65 magnetically drives the relay 61 based on the signal from the switch 49, turns on the relay switch 57, and connects one end of the planar heaters 7 and 9. Furthermore, switch 4
The other ends of the sheet heaters 7 and 9 are connected to an AC power source by a switch 47 which is turned on in synchronization with the sheet heaters 9 and 9, and bread is toasted by energizing and generating heat in the sheet heaters 7 and 9. When the second timer 65b counts a predetermined toast time and finishes toasting, the control circuit 65 magnetically drives the relay 63 again to rotationally drive the electric motor 39 in a required direction, and the first timer 65a Activate. As a result, when the switch 47 and the switch 49 are turned off by the rotating arm 41 which has started rotating, the switch 47 causes the other end of the sheet heater 7 and the A
One end of the planar heater 7-9 is disconnected by the relay switch 57 which is turned off by the relay 61 whose magnetic drive is interrupted and the C power source is disconnected. As a result, both ends of the planar heaters 7 and 9 are disconnected. The bread tray 35 is moved toward the loading position by the actuating block 27 that moves upward as the rotating arm 41 rotates, and when the actuating block 27 is moved to a certain upper position, the actuating block 27 pushes down the plate. 2
The pressed state of 9 is released. As a result, when the elastic force of the tension springs 31 and 33 becomes weaker than the elastic force of the compression spring 25, the upper ends of the net bodies 11 and 13 are separated from each other by the cam body 23, which moves upward due to the elastic force of the compression spring 25. direction to release the toasted bread from being held by the nets 11 and 13. When the first timer 65a counts a predetermined time, the magnetic drive of the relay 63 is interrupted and the rotational drive of the electric motor 39 is stopped. At this time, one end of the rotating arm 41 is held at the top dead center. As described above, this embodiment is characterized by excellent operability and workability, as it is possible to automatically take out the toasted bread from the input bread by operating the start switch 53. In addition, at locations other than the bottom dead center of the bread tray 35,
Both ends of the planar heaters 7 and 9 can be disconnected, and are characterized by high electrical safety. Furthermore, the switches 47 and 49 for connecting and disconnecting both ends of the sheet heaters 7 and 9 can be placed in the upper and lower positions, making it possible to achieve miniaturization of the device while maintaining high electrical insulation properties. . In the above explanation, when the switch 49 is turned on, the relay switch 57 is turned on by the magnetically driven relay 61 to connect one end of the sheet heaters 7 and 9. It is also possible to directly connect one end of the

【Effect of the invention】

Therefore, the present invention provides an electric toaster that can automatically toast bread and then take it out by simply operating a start switch. Further, the present invention can provide an electric toaster that can reliably continue toasting even when an external force is applied to the main body during toasting. Furthermore, the present invention provides a highly safe electric toaster by reliably cutting off the electricity to the sheet heater and disconnecting both ends of the sheet heater when the bread tray moves upward. I can do it.

[Brief explanation of drawings]

Figure 1 is a schematic oblique raft diagram showing the outline of an electric toaster, Figure 2
The figure is a perspective view showing the vertical drive mechanism of the bread tray, FIG. 3 is an electrical block diagram of the electric toaster, and FIGS. 4 and 5 are explanatory diagrams showing the operation of the electric toaster. In the figure, 1 is an electric toaster, 7 and 9 are planar heaters, and 11 and 9 are sheet heaters.
13 is a net body, 23 is a cam body, 35 is a bread tray, 41 is a rotating arm, 43 is a crank lever, and 47 and 49 are switches. ”

Claims (1)

[Claims] 1. A pair of opposing planar heaters, located between the pair of planar heaters, whose lower end is rotatably supported and whose upper end moves in the front-rear direction perpendicular to the up-down direction. A pan tray is supported between the pair of nets to be movable in the vertical direction, and a cam hole is provided in sliding contact with the upper end of each net. a first elastic member that always moves the cam body in a direction in which the upper ends of the net members are separated from each other; and a first elastic member that moves the cam body downwardly with the bread tray when the bread tray is moved toward the toasting position. a second elastic member that is attached to the abutting member and the cam body and moves the cam body in a direction in which the mesh bodies approach each other against the elastic force of the first elastic member; a rotating member and a crank lever connected to one end of the bread tray; an electric motor for rotating the rotating member in a predetermined direction; a first switch member that contacts and connects one end of each sheet heater; and a first switch member that contacts the other end of the rotating member and connects the other end of the sheet heater and a power source when the bread tray is moved to the toasting position. An electric toaster comprising: a second switch member that operates;