JPH0248729Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a toaster oven, and relates to an operating structure of a bell striking body that strikes the bell body to notify the end of roasting.

[Conventional technology]

In this conventional toaster oven, by pushing down an operating lever that can be raised and lowered in the vertical direction, the switch lever is pushed and the switch is closed. The ring is held by a lock lever which locks at the same time, and when the operating lever is lowered, the striking body is lowered and set in a state where it is separated from the bell body. When roasting is completed, the electromagnetic coil becomes de-energized and the lock lever is released. It was operated, the operating lever was returned upward by a spring, and as the operating lever rose, the bell-striking body rose to strike the bell.

In the conventional toaster oven mentioned above, in order to operate the operating lever by pressing down, it is necessary to form a guide groove on the front panel of the toaster body to move the operating lever in the vertical direction. It is not possible to provide operating parts for other switches, etc., and recently it has become difficult to provide the operating parts for various mechanisms that have been added to improve the functionality of toasters on the same front panel, so the front panel has to be made larger. The need arose. Therefore, there is a demand for a structure in which the actuation is performed using a push button on the front panel that requires a small area for actuation, instead of an actuation lever that moves up and down.

[Problem that the invention attempts to solve]

However, in order to use a push button to activate the heater circuit as well as the bell striking mechanism, there is a problem that unless the operating force is reduced, the toaster body will move due to the pressure operation of the push button, making the operation unstable. be.

The present invention was developed in view of the above-mentioned problems, and is a toaster in which the heater is energized and the bell body can be set by pressing the push button shaft.The present invention reduces the operating force and reduces the number of parts. To provide a toaster oven which can be manufactured in small quantities and has a simple structure.

[Means for solving problems]

The toaster oven of the present invention includes a push button shaft which is provided with an operating section at the front end, is supported in an advancing direction so as to be freely advanced and retracted, and is held in a retracted position during roasting; The switch is activated to close the heater circuit, and when the push button shaft retreats, it is rotated in the opposite direction to the striking direction, and when the push button shaft returns and advances, it is rotated back in the striking direction by the biasing force of the spring, and the tip is struck. It is equipped with a bell striking body forming a bell portion and a bell body that is struck by the return rotation of the striking bell body, the push button shaft is molded from synthetic resin, and a side surface of the push button shaft is provided with a bell body that is struck from the front side. A bell striking protrusion is provided which is inclined downwardly toward the rear, and opposite to the inclination of the bell striking protrusion, the bell striking protrusion is inclined downward from the rear side toward the front side, and when the push button shaft is retracted, It is characterized in that an engaging piece portion that is engaged and pressed is formed on the bell striking body.

[Effect]

In the toaster oven of the present invention, when the operation part of the push button shaft is pressed, the switch is closed and the heater circuit is closed, and the push button shaft is held in a retracted state, thereby turning the heater circuit energized. is held, and when the push button shaft moves back, the slanted bell-striking protrusion slides on the slanted engagement piece of the bell-striking body, and the bell-striking body is loaded with energy in the spring. while being rotated. At the end of roasting, the push button shaft is returned to the front, and the push button shaft is returned and moved forward by the spring. When the push button shaft returns, the striking body is returned by the spring, and the striking body strikes the bell body to notify the end of roasting. Furthermore, the heater circuit is opened by returning the push button.

〔Example〕

The configuration of an embodiment of the present invention will be described with reference to the drawings.

In Fig. 10, 1 is a toaster oven body, and the front panel 2 for operation is provided on the front of this body 1.
is provided. A mounting plate 3 is provided on the inner surface of the operation panel 2 as shown in FIGS. 2 and 3.
A fixed piece 4 is fixed with screws. This mounting plate 3 includes a side piece 5 bent rearward at a substantially right angle from the side edge of the fixing piece 4, and a rear piece 6 parallel to the fixing piece 4 bent at a right angle from this side piece 5. have. Further, a substantially U-shaped mounting base plate 7 is fixed to the side piece 5 of the mounting plate 3, located between the fixed piece 4 and the rear piece 6. This mounting plate 7
As shown in FIG. 4, shaft support holes 10 and 11 are opened in the front piece part 8 and the rear piece part 9, respectively, so as to face each other. The shaft support holes 10 and 11 of the front piece part 8 and the rear piece part 9 are formed in a substantially elliptical shape with both side surfaces planar.
2 has insertion recesses 13 and 14 cut out, respectively, and shaft support holes 10 and 1 in the front piece 8 and the rear piece 9.
Relief recesses 15 and 16 are cut out in the upper and lower parts of 1, respectively.

Further, as shown in FIGS. 2 and 3, the fixing piece 4 has a hole 17 that faces the shaft support hole 10 and is opened larger than the shaft support hole 10. As shown in FIGS.

Reference numeral 18 denotes an electrically insulating push button shaft, which can be inserted into the shaft support holes 10 and 11 of the front piece 8 and the rear piece 9 of the mounting base plate 7 so as to be able to advance and retreat, as shown in FIGS. 4 and 5. It is formed into a substantially elliptical cross-section with both sides flat. The push button shaft 18 is molded from synthetic resin, and is formed so that the parting line during molding is located along the axial direction in the upper and lower center.

Also, a flat part 19 on one side of this push button shaft 18
A switch operating protrusion 20 is integrally formed on the other side plane part 21, and a bell striking protrusion 22 is integrally formed at the front side of the switch operating protrusion 20, and the upper surface of this bell striking protrusion 22 extends from the front to the rear. slanted downwards towards.

Further, at the front end of this push button shaft 18, there is a 10th
As shown in the figure, a rectangular operating portion 24 is fixedly fitted into the rectangular fitting hole 23 of the front panel 2 so as to be movable forward and backward.

Further, an engagement groove 26 is formed in the circumferential surface of the mounting portion 25 at the rear end of the push button shaft 18 so that the push button shaft 18 has a square cross section.

Next, reference numeral 27 denotes an armature, which is formed into a substantially U-shaped side surface as shown in FIGS. A rectangular fitting portion 29 that fits into the engagement groove 26 is formed as a cutout, and cutout recesses 31 forming caulking pieces 30 are formed on both sides of the fitting portion 29 on the lower edge of the one side surface 28, respectively. It is provided. And the fixing piece 4 of the mounting plate 3
The shaft support hole 1 of the mounting base plate 7 is inserted through the opening 17 of the
The fitting part 29 of one side surface 28 of the armature 27 is engaged with the engagement groove 26 of the mounting part 25 of the push button shaft 18 which is inserted and supported so as to be freely forward and backward at the positions 0 and 11, and the caulking piece 30 is attached to the mounting part 25. When the armature 27 is fixed to the push button shaft 18 by caulking as shown by the chain line in FIG.
are opposed to each other with a small gap between them. In this state, one side surface 28 of the armature 27 of the push button shaft 18 comes into contact with the rear piece 9 of the mounting base plate 7, thereby preventing the push button shaft 18 from coming off forward.

Further, as shown in FIGS. 1 to 3, the rear piece 6 of the mounting plate 3 is provided with an armature 27 that faces the other side surface 32 of the armature 27 attached to the push button shaft 18, and attracts the other side surface 32 of the armature 27. An electromagnetic coil 33 is wound around a coil bobbin 34 and fixed thereto.

Further, as shown in FIGS. 1 and 2, a coiled spring 35 whose rear end is locked to the front piece 8 of the mounting base plate 7 is wound around the push button shaft 18, and the front end of the coiled spring 35 is wound around the push button shaft 18. is locked by a retaining ring 37 that is locked in a locking groove 36 at the front of the push button shaft 18, and the push button shaft 18 is urged forward by a spring 35.

The rear piece 9 of the mounting base plate 7 is formed longer than the front piece 8 as shown in FIGS. 2 and 3, and the rear piece 9 has a molded terminal block 3.
A pair of fixed contact pieces 39, 40 and a pair of fixed contact pieces 39, 40 are attached to this terminal block 38.
An elastic movable contact piece 41 is attached to the fixed contact piece 41, which is constantly separated and comes into contact with the fixed contact pieces 39, 40 through elastic deformation, and the fixed contact pieces 39, 40 and the movable contact piece 41 open and close the heater circuit and the electromagnetic coil circuit. It constitutes a switch 42 to

This movable contact piece 41 is connected to the push button shaft 1.
When the push button shaft 18 is retracted, it is pressed by the switch operating projection 20 of No. 8, and the fixed contact pieces 39, 4 are pressed.
0, the heater circuit is closed, and at the same time the circuit of the electromagnetic coil 33 is closed, the armature 27 is attracted by the excitation of the electromagnetic coil 33, the push button shaft 18 is held in the retracted position, and the switch 42 is is kept closed. Furthermore, when the electromagnetic coil circuit is opened by a switch (not shown) upon completion of roasting, the electromagnetic coil becomes de-energized.
Release the adsorption of armature 27 and press button shaft 1.
8 is a movable contact piece 4 that is moved forward by the biasing force of a spring 35 and is pressed by the switch operating protrusion 20.
1 is elastically restored and separated from the fixed contact pieces 39 and 40, and the switch 42 is opened to cut off the power supply to the heater circuit.

Next, reference numeral 43 denotes a bell striking body, which is rotatably attached to the overlapping part of the side piece 5 of the mounting plate 3 and the mounting base plate 7 with a pin 44, as shown in FIGS. 1 and 2. It is composed of a first bell striking plate member 45 and a second striking plate member 47 that strikes the bell body 46.
The first bell plate member 45 is formed by pressing a metal plate, and the lower part is a pivot support bent into a substantially L-shape as shown in FIGS. 5, 8, and 9. 48, this pivot support 48 is pivoted by a pin 44, and furthermore, at the tip of this pivot support 48,
Engagement piece portion 49 engaged with the striking projection 22
is formed by bending. This engagement piece portion 49 is
It is sloped downward from the front to the rear. The intermediate portion of the first bell plate member 45 is bent at a substantially right angle toward the side, and a connecting portion 5 is provided at the tip.
0 is formed. An engagement hole 51 is bored in the connecting portion 50 in a direction parallel to the front panel 2. Further, in this connecting portion 50, an engaging piece 52 is located in front of the engaging hole 51 and is cut and raised downward. Further, as shown in FIG. 8, the second bell-beating plate member 47 is formed into a substantially L-shape by pressing a metal plate, and one end thereof is connected to the first bell-beating plate. Step portion 53 corresponding to the wall thickness of member 45
As a result, a lower engaging portion 54 is formed, and an engaging groove portion 55 for engaging the engaging piece 52 is cut out in the engaging portion 54. Further, on the other end side of this second striking plate member 47, a striking part 56 is formed which is bent upward at a right angle. Then, an eighth
When the engaging portion 54 of the second striking plate member 47 is inserted from above up to the stepped portion 53 as shown by the chain line in the figure, and is tilted horizontally as shown in FIG. The engagement groove 55 of the engagement portion 54 engages with the engagement piece 52 of the first bell plate member 45, and the second bell plate member 47 swingably engages with the edge of the first bell plate member 47. It is connected to one striking plate member 45.

Further, a coiled spring 5 is installed between the first bell plate member 45 and the fixing piece 4 of the mounting plate 3.
7 is tensioned, and this spring 57 causes the first bell striking plate member 45 to move forward toward the pin 44.
It is biased to rotate around the center.

Further, the bell body 46 is attached to the inner surface of the panel 2 as shown in FIG.
A bell striking body 56 of the second bell striking plate member 47 is attached to the edge of the bell striking body 56 of the second bell striking plate member 47.
are facing each other.

Then, when the push button shaft 18 retreats, the striking projection 22 engages and slides into the engaging piece 49 of the first striking plate member 45, presses this engaging piece 49, and strikes the first bell. The plate member 45 is rotated counterclockwise about the pin 44 against the spring 57 as shown by the chain line in FIG. With this rotation of the first bell striking plate member 45, the second striking plate member 47 is also rotated integrally,
The striking portion 56 is separated from the bell body 46 and is maintained in this state while the push button shaft 18 is retracted. Further, when the push button shaft 18 returns and advances, and the pressing of the engagement piece portion 49 by the bell striking protrusion 22 is released, the first striking plate member 45 is rotated by the biasing force of the spring 57 (clockwise in FIG. 1). and this first
The second bell striking plate member 4 is integrated with the second bell striking plate member 45.
7 also rotates, and its striking portion 56 strikes the bell body 46, and this striking causes the second striking plate member 47 to engage the engagement hole 51 of the connecting portion 50 of the first striking plate member 45. Since the engaging portion 54 is swingably engaged with the ring, the second bell striking plate member 47 swings back and forth due to the impact at the time of hitting, and the sound effect of the bell striking body 46 is not impaired. This striking body 43 is connected to the engagement piece 49 from the pin 44.
By making the distance L2 from the pin 44 to the bell striking portion 56 of the second bell striking plate member 47 longer than the distance L1 from the pin 44 to the bell striking portion 56 of the second bell striking plate member 47, The amount of rotation of the bell striking portion 56 of the second bell striking plate member 47 is made larger than the amount of rotation of the engagement piece portion 49, so that the amount of pressing of the push button shaft 18 is small and the pressing operation force is light. ing.

Further, the engaging portion 54 of the second striking plate member 47 that is inserted into and engaged with the engaging hole 51 of the connecting portion 50 of the first striking plate member 45 is not rotated to an angle where it is removed from the engaging groove portion 55. The striking part 56 and the bell body 46
The positional relationship is set so that the bell striking part 56 of the second bell striking plate member 47 will not be rotated to an angle where it collides with the bell body 46 and the engaging part 54 is disengaged from the engaging hole 51. , after the bell-striking body 43 is attached to the mounting plate 3, the second bell-striking plate member 47 is attached to the first bell-striking plate member 45.
It never comes off.

Further, as shown in FIG. 3, on the mounting plate 3, a guide piece 58 for guiding the first bell striking plate member 45 of the bell striking body 43 is folded at a substantially right angle from the upper edge via a connecting piece 59. The first bell plate member 45 is bent and formed so that the first bell plate member 45 is rotatably moved between the inner surface of the side piece 5 of the mounting plate 3 and the outer edge of the guide piece 58. Even if the caulking force of the pin 44 is loosened so that the pin 44 rotates smoothly and is not affected by heat, the positional deviation of the bell striking portion 56 of the second bell striking plate member 47 from the bell body 46 can be reduced. , and the striking sound is optimally maintained.

The operation of the next embodiment will be explained.

When the operation part 24 of the push button shaft 18 is pressed,
The push button shaft 18 is retracted while compressing the spring 35. With this retraction of the push button shaft 18,
The switch operating protrusion 20 pushes the movable contact piece 41,
The movable contact piece 41 is elastically deformed and becomes the fixed contact piece 39, 40.
, the heater circuit is closed and the heater in the roasting chamber is energized. Since the push button shaft 18 is insulative, there is no problem even if the movable contact piece 41 is directly pressed. The electromagnetic coil 33 is also energized, and the other side 32 of the armature 27 attached to the retracted push button shaft 18 is energized.
is attracted, and the push button shaft 18 is held in the retracted state. Further, when the push button shaft 18 retreats, the bell striking protrusion 22 slides and pushes the engagement piece 49 of the first bell striking plate member 45 of the bell striking body 43, and the first bell striking plate member 45 is moved. The spring 57 rotates against this first
The second bell striking plate member 4 connected to the bell striking plate member 45 of
7 also rotates integrally, and the bell striking portion 56 is separated from the bell body 46. When the push button shaft 18 retreats, the switch operating projection 20 and the bell striking projection 22 engage with the movable contact piece 41 and the first striking plate member 45, and even if pressure is applied from the left and right sides, the push button shaft 18 will not move. ,
Since the cross section is approximately elliptical and the shaft support holes 10 and 11 of the mounting base plate 7 are also approximately elliptical, the push button shaft 18 is not rotated in the circumferential direction.

Furthermore, even if burrs are formed on the upper and lower parts of the push button shaft 18 due to the upper and lower axial parting lines during molding, there are escape recesses 1 at the upper and lower parts of the shaft support holes 10 and 11.
5 and 16 are formed, so the push button shaft 1
8 operates smoothly without getting caught when moving forward or backward.

Further, when the electromagnetic coil 33 is de-energized by opening a timer switch (not shown) upon completion of roasting, the armature 27 is released from adsorption, and the push button shaft 18 is returned forward by the spring 35. , the pressure on the movable contact piece 41 by the switch operating protrusion 20 is released, the movable contact piece 41 returns due to its elasticity and separates from the fixed contact pieces 39, 40, and the heater circuit is opened. Further, the pressing of the engagement piece 49 of the first bell plate member 45 by the bell striking protrusion 22 of the push button shaft 18 is released, and the first bell striking plate member 45 is rotated back by the spring 57. The second bell striking plate member 47, which rotates integrally with the first bell striking plate member 45, also rotates, and its striking portion 56 hits the bell body 46, and the bell body 46 emits a sound. Notifies the end of roasting. When the bell striking body 43 rotates, the first bell striking plate member 45 is guided between the guide piece 58 and the side piece 5 of the mounting plate 3, and the first bell striking plate member 45
Since the engagement piece 52 is engaged with the engagement groove 55 of the engagement portion 54 of the second striking plate member 47 inserted and engaged with the engagement hole 51 of the connecting portion 50, the second striking bell is The bell striking portion 56 of the plate member 47 strikes the bell body 46 without being displaced.

Furthermore, since the first bell striking plate member 45 is biased by the spring 57 in the striking direction of the bell body 46, it is possible to increase the striking effect of the bell body 46 even if the amount of movement of the push button shaft 18 is small. can.

Further, the distance L2 from the rotation center of the bell striking body 43 to the engagement piece 49 is larger than the distance L1 from the center of rotation to the engagement piece 49, and the amount of rotation of the bell striking portion 56 is larger than the amount of rotation of the engagement piece 49. Therefore, the amount of movement of the push button shaft 18 is reduced, the operating force is lightened, and the amount of movement necessary for hitting the bell striking body 43 can be obtained.

When assembling, insert the push button shaft 18 with the operating section 24 attached to the opening 1 of the fixed piece 4 of the mounting plate 3.
7 into the shaft support holes 10 and 11 of the mounting base plate 7. At this time, the switch operating protrusion 20 and the striking protrusion 22 of the push button shaft 18 are inserted into the insertion recess 1 of the shaft support hole 10.
3 and 14 and is pivotally supported and protrudes from the rear piece 9 of the mounting base plate 7.
6 is fitted with the fitting portion 29 of the armature 27, and the caulking piece 30 is caulked to fix the armature 27 to the push button shaft 18. In this state, the push button shaft 18 is prevented from coming off. and push button shaft 18
Since it is an electrically insulating material, the movable contact piece 41 can be directly pressed by the switch operating protrusion 20, and there is no need for an intervening insulating material.

Further, the striking body 43 is attached to the mounting plate 3 by connecting the first striking plate member 45 and the second striking plate member 47 through engagement between the engagement hole 51 and the engaging portion 54. The movement range of the bell-striking body 43 is restricted by the bell-striking portion 56 of the second bell-striking plate member 47 coming into contact with the bell body 46;
The second striking plate member 47 does not come off from the first striking plate member 45.

[Effect of idea]

According to the present invention, in a toaster that closes a switch and closes a heater circuit by pressing an operation part provided at the front end of a push button shaft that moves back and forth in the axial direction, the switch is closed. On the side surface of the button shaft, a bell-striking projection is provided which is inclined downward from the front side to the rear side, and the bell-striking projection is inclined opposite to the slope of the bell-striking projection, and engages with this bell-striking projection when the push button shaft is retracted. Since the engaging piece that is pressed together is formed on the bell-striking body, the pressing operation force is light because the bell-striking protrusion slides and presses the engaging piece of the bell-striking body when the push button shaft is pressed. By simply moving the push button shaft back and forth, the panel section where the operating section of the push button shaft is placed can be effectively utilized.Also, when the push button shaft returns, the switch is released and the striking body is moved back and forth. It performs a striking action to notify the end of roasting, has a small number of parts, has a simple configuration, and can be operated with a small amount of operating force with a small load on the push button shaft.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal cross-sectional side view of a switch device for a toaster oven showing an embodiment of the present invention, Fig. 2 is a perspective view of the same as above, Fig. 3 is a perspective view of the push button shaft and switch part of the above, and Fig. 4 is a perspective view of the same as above. FIG. 5 is a perspective view of the push button shaft and the bell striking body, FIG. 6 is a perspective view of the armature, and FIG. 7 is the bell body and the second bell striking body. 8 is an exploded perspective view of the bell striking plate member, FIG. 9 is a perspective view showing a connected state of a part of the above bell striking plate member, and FIG.
The figure is a perspective view of the toaster oven. 18... Push button shaft, 22... Bell striking protrusion, 2
4...Operation unit, 42...Switch, 43...Bell striking body, 46...Bell body, 49...Engagement piece part, 57...
spring.

Claims (1)

[Claims for Utility Model Registration] (1) A push-button shaft that is provided with an operating portion at its front end, is biased in the advancing direction, is supported to move forward and backward, and is held in the retreated position during roasting, and said push-button shaft. The switch is actuated by the retraction of the push button shaft to close the heater circuit, and the switch is rotated in the opposite direction to the striking direction by the retraction of the push button shaft, and is rotated back in the striking direction by the biasing force of the spring when the push button shaft returns and advances. The push button shaft is molded of synthetic resin, and the push button shaft is made of synthetic resin. A bell striking protrusion is provided on the side surface and is inclined downward from the front side toward the rear, and the bell striking protrusion is inclined opposite to the inclination of the bell striking protrusion, and is engaged and pressed by the bell striking protrusion when the push button shaft retreats. A toaster oven characterized in that an engaging piece is formed on the bell body. (2) Utility model registration claim 1, wherein the striking body is characterized in that the distance from the pivot point to the bell striking portion is longer than the distance from the pivot point to the engagement piece. Toaster oven as described.