JPH0248732Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a bell striking device for a toaster oven.
The present invention relates to the structure of a bell striking body that notifies the end of roasting by striking a bell.

[Conventional technology]

In this type of oven toaster bell-striking device, in order to enhance the acoustic effect when the bell-striking body hits the bell body, it is necessary to instantly separate the bell-striking unit from the bell body. For this reason, conventionally, a structure has been adopted in which a second bell striking plate member is swingably supported on a first bell striking plate member.

[Problem that the invention attempts to solve]

In the above conventional structure, the first bell plate member and the second
There is a problem in that a shaft is required to swingably connect the bell striking plate members, and dimensional accuracy of both members is required in order to strike the bell body in an accurate position.

The present invention was devised in view of the above-mentioned problems, and allows the first bell striking plate member and the second bell striking plate member to be oscillated by a simple assembly without using separate members and without impairing the acoustic effect. To provide a toaster bell striking device which can be connected together.

[Means for solving problems]

The toaster oven bell striking device of the present invention is provided with an operating section at the front end, is supported in the advancing direction so as to be able to move forward and backward, is held in the backward position during roasting, and is moved forward when the roasting is completed. When the push button shaft is returned and the push button shaft retreats, the bell striking part is rotated in a direction away from the bell striking position, and when the push button shaft returns, the ring is rotated in the direction of striking the bell. It consists of a bell-striking body and a bell body that is struck by a bell-striking part of the bell-striking body, and the bell-striking body is rotatably supported by a shaft and biased in the bell-striking direction by the spring. The first bell-striking plate is composed of one bell-striking member and a second bell-striking plate member that is swingably engaged with the first bell-striking member and has the bell-striking portion formed at its tip. The engaging hole formed in the connecting part at the tip of the member engages with the engaging part formed at the lower end of the second bell striking plate member through a step, thereby connecting the first bell striking plate member. It is characterized in that an engagement groove portion formed in the engagement portion of the second striking plate member is engaged with an engagement piece provided downwardly protruding from the portion.

[Effect]

The toaster oven bell striking device of the present invention has a second
The engaging portion of the first bell striking plate member is engaged with the engaging hole of the connecting portion of the first striking plate member, the engaging portion is overlapped with the connecting portion, and the engaging groove portion is engaged with the engaging piece. By doing so, the second bell striking member can be swingably connected to the first bell striking plate member, and at the moment when the bell striking part hits the bell body, the second bell striking plate member swings due to the reaction, The acoustic effect of the striking sound of the bell body is not impaired.

〔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. 5 and 6.
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. 7, shaft support holes 10 and 11 are respectively opened in the front piece 8 and the rear piece 9 so as to be spaced apart from each other and facing 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 flat, and both side edges 12 of the shaft support hole 10 of the front piece part 8 are Insertion recesses 13 and 14 are formed with cutouts, respectively, and the shaft support holes 1 of the front piece 8 and the rear piece 9
Relief recesses 15 are provided at the upper and lower edges of 0 and 11, respectively.
16 is notched.

Further, as shown in FIGS. 5 and 6, the fixed piece portion 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 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 move forward and backward, as shown in FIGS. 1 and 7. The push button shaft 18 has a generally elliptical cross-section with both sides flat, and the shape of the shaft support holes 10 and 11 is matched to the cross-sectional shape of the push button shaft 18. 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 at 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. is sloped downward along the

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.

Furthermore, as shown in Fig. 7, this push button shaft 1
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 cross section of the push button shaft 18 is square.

Next, 27 is the armature, Fig. 1, Fig. 5,
As shown in FIGS. 6 and 9, the side surface 28 is formed into a substantially U-shape, and the side surface 28 has a square shape that opens downward and fits into the engagement groove 26 of the mounting portion 25 of the push button shaft 18. A fitting part 29 is formed with a notch,
Further, cutout recesses 31 forming caulking pieces 30 are provided on both sides of the fitting portion 29 at the lower edge of the one side surface 28, respectively. Then, it is inserted into the engagement groove 26 of the mounting part 25 of the push button shaft 18 which is inserted through the opening 17 of the fixed piece part 4 of the mounting plate 3 and is inserted into the shaft support holes 10, 11 of the mounting base plate 7 so as to be freely forward and backward. When the armature 27 is fixed to the push button shaft 18 by engaging the fitting portion 29 on one side surface 28 of the armature 27 and caulking the caulking piece 30 to the mounting portion 25 as shown by the chain line in FIG. As shown in the figure, the other side surface 32 of the armature 27 faces the rear end surface of the push button shaft 18 with a small gap therebetween. In this state, the push button shaft 18 has one side 28 of the armature 27 attached to the rear piece 9 of the mounting base plate 7.
contacts and prevents it from coming off in the forward direction.

Further, on the rear piece 6 of the mounting plate 3, FIG.
As shown in Figures 5 and 6, the push button shaft 1
The other side surface 3 of the armature 27 attached to 8
An electromagnetic coil 33 that faces 2 and attracts the other side 32 is wound around a coil bobbin 34 and fixed thereto.

Further, as shown in FIGS. 1 and 5, a coiled spring 35 whose rear end is locked to the front piece 8 of the mounting 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.

Further, the rear piece 9 of the mounting base plate 7 is formed longer than the front piece 8 as shown in FIGS. 5 to 7, and a molded terminal block 38 is attached to this rear piece 9. This terminal block 38 has a pair of fixed contact pieces 39, 40 and this fixed contact piece 39,
40, the contact pieces 39, 40 are constantly separated and fixed due to elastic deformation.
An elastic movable contact piece 41 that comes into contact with is attached, and the fixed contact pieces 39, 40 and the movable contact piece 41 constitute a switch 42 that opens and closes the heater circuit and the electromagnetic coil circuit.

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 which is moved forward by the biasing force of the spring 35 and is pressed by the switch operating protrusion 20.
1 is elastically restored and separated from the fixed contact pieces 39, 40, the switch 42 is opened and the power to the heater circuit is cut off.

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 metal press working, and as shown in FIGS. 1 to 5, the lower part has a pivot support 48 bent into a substantially L-shape.
This pivot support 48 is pivoted by a pin 44, and an engagement piece 49 that is engaged with the striking projection 22 is bent and formed at the tip of the pivot support 48. . This engagement piece portion 49 is inclined downward from the front side toward the rear side. Further, the intermediate portion of the first striking plate member 45 is bent laterally at a substantially right angle, and a connecting portion 50 is formed at the tip. An engagement hole 51 is bored in the connecting portion 50 in a direction parallel to the front panel 2.
Further, an engagement piece 52 is formed in the connecting portion 50 and is cut and raised downward so as to be located in front of the engagement hole 51 . Further, as shown in FIG. 3, the second striking plate member 47 is formed into a substantially L-shape by press working a metal plate, and one end thereof is provided with the first bell plate member 47.
A lower engaging portion 54 is formed by a step portion 53 corresponding to the wall thickness of the striking plate member 45, and an engaging groove portion 55 that engages the engaging piece 52 with this engaging portion 54.
is formed with a notch. 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, as shown by the chain line in FIG. When inserted and tilted horizontally as shown in FIG.
engages with the engagement piece 52 of the first striking plate member 45,
The second striking plate member 47 is swingably connected to the first 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 portion 56 of the second bell striking plate member 47 is attached to the edge of the bell striking portion 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 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 second bell striking plate member 47, the second striking plate member 47 swings back and forth due to the impact reaction at the time of striking, and the sound effect of striking the bell of the bell body 46 is not impaired. . The striking body 43 is located at a distance L1 from the pin 44 to the engagement piece 49.
The distance L2 from the first bell striking plate member 47 to the bell striking portion 56 is made longer than the amount of movement of the push button shaft 18, that is, the rotation amount of the engaging piece portion 49 of the first bell striking plate member 45. Bell striking portion 56 of the second bell striking plate member 47
The amount of rotation of the push button shaft 18 is increased to reduce the amount of pressure on the push button shaft 18 and to reduce the pressing force. Further, a connecting portion 50 of the first striking plate member 45
The position of the bell striking part 56 and the bell body 46 is such that the engaging part 54 of the second bell striking plate member 47 inserted into the engaging hole 51 of Setting the relationship, the second bell plate member 4
The striking portion 56 of No. 7 collides with the bell body 46 and the engaging portion 54
is configured such that it is not rotated to an angle where it comes off from the engagement hole 51, and after the bell striking body 43 is attached to the mounting plate 3, the second striking plate member 47 comes off from the first striking plate member 45. Never.

Further, as shown in FIGS. 5 and 6, a guide piece 58 for guiding the first bell-striking plate member 45 of the bell-striking body 43 is attached to the mounting plate 3 from the upper edge to the connecting piece 5.
9, the first striking plate member 45 is configured to rotate 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 first bell striking plate member 45 rotates smoothly and is not affected by thermal effects, the bell striking portion 56 of the second bell striking plate member 47 does not reach the bell body 46. This allows for less misalignment with respect to the ring, and optimally maintains the striking sound.

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 second bell striking plate member 47 that rotates against the spring 57 and is connected to the first bell striking plate member 45 also rotates together, and the bell striking part 56 is separated from the bell body 46. . When the push button shaft 18 retreats, the switch actuating 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 the push button shaft 18 receives pressing force from the left and right side surfaces, the push button shaft 18
has a substantially elliptical cross section, and the shaft support holes 10 and 11 of the mounting base plate 7 also have a substantially elliptical shape, so the push button shaft 18 is not rotated in the circumferential direction. The switch actuating projection 20 and the bell striking projection 22 of the push button shaft 18 are not misaligned with the movable contact piece 41 and the engaging piece portion 49 of the first striking plate member 45.

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 engagement piece 49 of the first bell plate member 45 is pressed by the bell striking protrusion 22 of the push button shaft 18, and the first bell striking plate member 45 is rotated back by the spring 57. The second bell striking plate member 47 that 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 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, the bell-striking body is rotatably supported by the first bell-striking plate member which is pivotably supported and biased in the striking direction by a spring, and the first bell-striking plate member is rotatably supported by the first bell-striking plate member. It is composed of a second bell striking plate member that is engaged and has a bell striking portion formed at its tip, and the second bell striking plate member is inserted into the engagement hole formed in the connecting portion at the tip of the first bell striking plate member. The engaging piece is formed at the lower end through a step and engages with the engaging part, and the engaging piece protrudes downward from the connecting part of the first striking plate member and the engaging part of the second striking plate member. Since the formed engagement grooves are engaged, the bell striking body can be easily assembled without using other members such as a shaft, and the second bell striking plate member can be easily assembled between the engagement piece and the engagement groove. The bell body can be accurately struck with the striking part of the second field striking bell plate member 4 without changing its direction when the bell body is struck. It does not impair the acoustic effect, has a small number of parts, and can be assembled at low cost.

[Brief explanation of the drawing]

Fig. 1 is a vertical sectional side view of a bell-striking device for an oven toaster showing an embodiment of the present invention, Fig. 2 is a side view of the above-mentioned bell body when it is struck, and 3rd is an exploded perspective view of the same bell-striking body; Fig. 4 is a perspective view showing the assembly process of the above, Fig. 5 is a perspective view of the bell striking device of the above, Fig. 6 is a perspective view of the switch mechanism of the above, and Fig. 7 is a perspective view of the push button shaft and the mounting base plate of the above. 8 is a perspective view of the push button shaft and the bell striking body, FIG. 9 is a perspective view of the armature, and FIG. 10 is a perspective view of the toaster oven. 18...Push button shaft, 24...Operation unit, 43...Bell striking body, 45...Bell striking plate member of stand 1, 46...Bell body, 4
7... Second striking plate member, 50... Connecting part, 51... Engaging hole, 52... Engaging piece, 53... Step part, 54... Engaging part, 55... Engaging groove part, 56... Bell striking part, 57...Spring.

Claims (1)

[Claims for Utility Model Registration] (1) An operating part is provided at the front end, is supported in the advance direction so as to be freely advanced and retractable, is held in the retreat position during roasting, and is moved forward when roasting is completed. When the push button shaft is returned and the push button shaft retreats, the bell striking part is rotated in a direction away from the bell striking position, and when the push button shaft returns, the ring is rotated in the direction of striking the bell. It consists of a bell-striking body and a bell body that is struck by a bell-striking portion of the bell-striking body, and the bell-striking body is rotatably supported by a first shaft and biased in the striking direction by the spring. a second bell-striking plate member that is swingably engaged with the first bell-striking plate member and has the bell-striking portion formed at its tip; The engaging hole formed in the connecting part at the tip of the plate member engages with the engaging part formed at the lower end of the second bell striking plate member via a stepped part, and the first bell striking plate member A bell striking device for an oven toaster, characterized in that an engaging groove portion formed in an engaging portion of the second bell striking plate member is engaged with an engaging piece protruding downward from the connecting portion. (2) The second bell striking plate member is prevented from being rotated from the first bell striking plate member to an angle at which the engaging portion of the second bell striking plate member is disengaged from the connecting portion of the first bell striking plate member. A bell striking device for an oven toaster according to claim 1, characterized in that a bell body is provided at a position that restricts the rotation range of the second bell striking plate member.