JPH0112235Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a cooking device for cooking food materials, and more particularly to a timer display mechanism.

Generally, a cooking device such as a toaster oven as shown in FIGS. 1 to 3 is used. This toaster oven houses a heating element and a timer inside to heat food materials. Further, this toaster oven has an opening/closing door 2 and a timer display mechanism 3 (hereinafter referred to as the display mechanism) on the front of the case 1, and a timer knob 4 connected to the display mechanism 3 is provided on the side surface. There is. By rotating the timer knob 4, a built-in timer is activated, and the heating element is energized for the time set by the timer to heat the food material.
The display mechanism 3 displays the cooking time set by the timer using an indication band 3A, and the display band 3A displays the remaining cooking time in conjunction with the timer. This conventional display mechanism 3 was constructed as follows. That is, the display substrate 3
There is a groove 3C along the vertical direction in the widthwise central part of B.
is provided, and the lower end of this groove 3C is connected to the display substrate 3.
It communicates with the back surface of B and forms an insertion opening 3D. A transparent plate 3E is closely attached to the front surface of the display substrate 3B, and the transparent plate 3E closes the opening of the groove 3C to form a display band passage 5. A transparent film 3F on which a scale indicating the cooking time is printed by means of vapor deposition or the like is adhered to the surface of the transparent plate 3E. Further, the display substrate 3B, the transparent plate 3E, and the transparent film 3F are integrally formed by a fixing member 3G, and are fixed to the front surface of the case 1. The display band 3A is inserted into a display band passage 5 formed by a display substrate 3B and a transparent plate 3E, and is wound around a roller 3H. This roller 3H guides the display band 3A to the display band path 5. It is accommodated in a roller cover 3J having a guideway 3I. This roller 3H is attached to a common shaft between the timer and timer knob 4,
The display band 3A is inserted into the display band passage 5 in accordance with the rotation of the timer knob 4. At this time, on the front side of the display mechanism 3, the display band 3A passes through the transparent plate 3E and the transparent film 3F to the timer knob 4.
The state in which the display band moves upward in the display band passage 5 can be visually observed according to the amount of rotation of the display band, and a timer can be set at any position on the scale on the transparent film 3F. After setting the timer, the timer rotates the roller 3H and the timer knob 4 in the direction of winding the display band 3A onto the roller 3H as time passes, and after the predetermined cooking time has passed, the display band 3A will be on the scale. Roller 3H to indicate the 0 position
will be collected in.

The conventional display mechanism 3 configured as described above has the following problems.

First of all, the display band passage 5 is connected to the display substrate 3B.
and a transparent plate 3E, while a display band 3A
is made of a flexible material such as polyester, so the display band 3A is always connected to the transparent plate 3E.
It moves up and down the display band passage 5 while making contact with the display band passage 5. Therefore, after long-term use, the transparent plate 3E is damaged by the display band 3A, and its transparency gradually decreases, resulting in a problem that it becomes difficult to visually see the display band 3A through the transparent plate 3E.

Next, the display band 3A is pushed out into the display band passage 5 by the rotation of the roller 3H.
The display band is made of a material with low rigidity, such as polyester. For this reason, in the conventional display mechanism 3 in which the display band 3A and the transparent plate 3E are in full contact with each other, the resistance due to frictional force is large, and the display band 3A does not rise smoothly in the display band passage 5, and finally the display band 3A There was a problem with the product buckling. Furthermore, in order to compensate for the above-mentioned defects of the display band 3A, it is possible to form the display band 3A with a highly rigid material, but in this case, the following problems occur. That is, the display band 3A is wound around a roller 3H coaxially connected to a timer that rotates as time passes, and the display band with high rigidity has a strong restoring force that presses the transparent plate 3E. As a result, rotational resistance of the timer increases, resulting in a problem that the timer operates later than a predetermined set time.

The display band passage 5 is formed by a display substrate 3B and a transparent plate 3E. Therefore, the display band 3A gets stuck in the gap between the display substrate 3B and the transparent plate 3E, causing a problem that the display band 3A does not move.

Furthermore, the display band passage 5 is formed of a display substrate 3B and a transparent plate 3E, and a transparent film 3F on which scales and the like are printed is adhered to the transparent plate 3E. Therefore, the structure is complicated, and work required for positioning the scales is required, resulting in problems such as difficulty in assembly.

Therefore, the inventor of the present invention has developed the following timer display mechanism 10, which is configured such that a display band path is integrally formed on the display substrate and the display band and the transparent plate are in a non-contact state.
developed. That is, the above-mentioned timer display mechanism 10 is shown in FIGS. 4 to 12, and numeral 1 in the figures is a case of a cooking appliance, such as a toaster oven. A display substrate 6 and a transparent scale plate 7 are provided on the front side of the case 1. A display band guide groove 6A is provided in the center of the display substrate 6 along the vertical direction.
(hereinafter referred to as a guide groove) is provided, and a transparent scale plate 7 is bonded to the display substrate 6 by means such as welding. Further, a timer section 8 is provided on the back side of the case 1;
A, roller 8B, roller cover 8C, and timer knob 8D. The timer 8A, roller 8B, and timer knob 8D are rotatably attached as a unit. A display strip 3A formed into a thin strip of a flexible material such as polyethylene is wound around the roller 8B. This display band 3A is led out from the guide portion 8E of the roller cover 8C to the guide groove 6A of the display substrate 6, and is configured to move up and down the guide groove 6A in accordance with the movement of the roller portion 8B.

The structure of this display substrate 6 will be explained below with reference to FIGS. 5 to 9. A guide groove 6A is provided in the center of the display substrate 6 along the vertical direction, and the guide groove 6A opens toward the display surface of the display substrate 6. Furthermore, guide protrusions 6B having a uniform cross section in the longitudinal direction are provided at both edges of the opening. And the guide groove 6
A timer display band insertion portion 6C is provided at the lower end of A and opens to the back side. Further, the bottom wall of the guide groove 6A is formed by a construction body 6D installed between the upper end of the guide groove 6A and the timer display band introduction part 6c. The width of this construction body 6D is the guide groove 6
A guide protrusion 6E having a uniform cross section in the longitudinal direction is provided on the front surface of the construction body 6D, that is, on the inner bottom surface of the guide groove 6A. A stepped portion 6F is provided at the periphery of the display substrate 6, and the transparent scale plate 7 is provided with a stepped portion 6F.
are welded at the stepped portion 6F. This display board 6
is molded from synthetic resin and is integrally molded by a method such as injection molding using a mold that is divided into two parts, the front and the rear, and is therefore formed as described above.

A display mechanism 10 including such a display substrate 6 is constructed as shown in FIGS. 10 to 12.
In this display mechanism 10, the guide groove 6A is provided in the display substrate 6.
are formed integrally, and the display band 3A and the transparent scale plate 7 are configured to be in a non-contact state, reducing the contact area between the display band 3A and the guide groove 6A.
Although it has the advantage that A smoothly moves up and down within the guide groove 6A, there remains a technical problem to be solved. That is, when the cooker is in use, the construction body 6D of the display board 6 is closest to the front surface of the case 1, and hot air enters the guide groove 6A through the timer display band introducing portion 6C, so that the construction body 6D is more easily heated than other parts of the display substrate 6. Therefore, the construction body 6D of the display substrate 6
This is a problem in that the guide groove 6A is curved toward the display surface side under the influence of heat during use of the cooker, blocking the guide groove 6A and inhibiting insertion of the display band. This problem is caused by construction body 6D.
are integrally molded on the display substrate 6 only above and below the guide groove 6A, and the guide groove 6A is integrally molded in other parts.
This is due to the fact that a gap exists between both side edges of the rear opening and both side edges of the construction body 6D. However, such a gap is formed in the display substrate 6 because it is unavoidable because the display substrate 6 is integrally molded using a pair of front and rear molds. It was necessary to resolve the problem.

The present invention was developed in consideration of the above circumstances, and its purpose is to display a timer display in a device that allows timer display by moving the timer display band without contacting the transparent display board. To provide a timer display mechanism for a cooking appliance in which a band can smoothly move within a display band guide groove.

That is, the present invention has a display substrate made of synthetic resin that has an elongated opening that communicates between the front and back surfaces, and a timer display band is introduced from the back side into the elongated opening at one end of the opening. Guide protrusions thinner than the plate thickness of the display substrate are integrally provided at both edges of the opening on the surface side of the section, and the guide protrusions are integrally provided on the display substrate only at both ends in the longitudinal direction of the elongated opening. A construction body is provided as a bottom wall of the elongated opening with a gap between both sides of the opening, and the movement of the timer display band is guided between the construction body and the guide protrusion. A display body guide groove is formed, and the guide groove is closed with a transparent scale plate fixed to the display substrate, so that the timer display band and the transparent scale plate are in a non-contact state, The above object is achieved by integrally protruding a fixing part on the back surface of the central part in the longitudinal direction of the construction body, and fixing this fixing part to the case of the cooker to which the display board is attached. .

In such a configuration of the present invention, the fixing part protruding from the back surface of the central part of the construction body is connected to the case, so that the construction body does not curve toward the front side during use, and the display band guide groove It is possible to prevent the sliding movement of the timer display band within the structure from being obstructed by the curvature of the construction body.

A timer display mechanism according to an embodiment of the present invention will be described below. First, the configuration of the display board 11 included in this timer display mechanism is shown in FIGS. 14 to 16.
This will be explained according to the diagram. A guide groove 11A is provided in the center of the display substrate 11 along the vertical direction.
It is open toward the display surface side. Furthermore, guide protrusions 11B having a uniform cross section in the longitudinal direction are provided at both edges of the opening. A protrusion 11b that protrudes toward the back surface of the substrate 11 is provided at the tip of each protrusion 11B. Furthermore, the thickness of each guide protrusion 11B is formed to be thinner than the thickness of the display substrate 6. Also, the guide groove 11
A timer display band introduction part 11C is provided at the lower end of A and opens to the back side. Further, the bottom wall of the guide groove 11A is formed of a construction body 11D that is integrally connected only to the upper end of the guide groove 11A and the timer display band introduction part 11c, and is installed between them. A gap g exists between both side edges of this construction body 11D and both side edges on the back side of the guide groove 11A, and the width of the construction body 11D is the same as the width of the guide groove 11A. And the construction body 1
A guide protrusion 11E having a uniform cross section in the longitudinal direction is provided on the front surface of the guide groove 11D, that is, on the inner bottom surface of the guide groove 11A.
is provided toward the front side. Further, on the back side of this construction body 11D, an integral fixing portion 11I is provided protrudingly provided at the central portion in the longitudinal direction. This fixed part 1
1I is provided with a screw hole and configured to be screwed onto the case 1. A stepped portion 11F is provided at the periphery of the display substrate 11, and the transparent scale plate 7 is welded to the stepped portion 11F. This display substrate 11 is integrally molded from synthetic resin by a method such as injection molding using a front and rear molding die, and is therefore formed as described above.

The display mechanism of the present invention including such a display substrate 11 is constructed as shown in FIG. In such a display mechanism of the present invention, the construction body 1 of the display substrate 11
By integrally providing the fixing part 11I in the case 1 and screwing it to the case 1, the construction body 11D may curve toward the display surface as shown by the two-dot chain line in FIG. 12, thereby obstructing the insertion of the display band 3A. This has the advantage that the display band 3A can move up and down smoothly within the guide groove 11.

The present invention is not limited to the above embodiment,
It can be applied to various cooking appliances with a built-in timer.

As described above, the timer display mechanism of the cooker according to the present invention has a flexible thin timer display band that is gradually wound around the timer part as the timer operates, and the front and back surfaces communicate with each other. A display substrate made of synthetic resin having an elongated opening and having a timer display band introduced from the back side into the elongated opening at one end of the opening, and the elongated opening formed thinner than the board thickness of the display substrate. A guide protrusion integrally provided on both side edges of the opening on the front surface side of the part is integrally connected only at both ends in the longitudinal direction of the elongated opening, and a gap exists between the guide protrusion and both side edges of the elongated opening. a construction body that is provided as a bottom wall of the elongated opening and forms a display band guide groove between the guide protrusion and the guide groove for guiding the movement of the timer display band; The device includes a fixing portion that is integrally protruded from the back surface of the central portion and is fixed to the case of the cooker to which the display board is attached, and a transparent scale plate that is fixed to the display board and closes the guide groove. . Therefore, the above-mentioned construction body is prevented from curving toward the display surface and obstructing the insertion of the timer display band,
The timer display band can slide within the display band guide groove, which is highly effective.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a conventional toaster oven, FIG. 2 is a cross-sectional view of FIG. 1, FIG. 3 is a cross-sectional view of FIG. 1, FIG. 4 is an exploded view of the timer display mechanism 10, and FIG. The figure is a front view of the display substrate 6, FIG. 6 is a cross-sectional view of FIG. 5, FIG. 7 is a cross-sectional view of FIG. 5, FIG. 8 is a cross-sectional view of FIG. 5, and FIG. 9 is a cross-sectional view of FIG. 5 is a cross-sectional view of the timer display mechanism 10, FIG. 10 is a vertical cross-sectional view of the timer display mechanism 10, FIG.
Fig. 2 is an enlarged view of the guide groove in Fig. 11, Fig. 13 is an enlarged view of the guide groove in the embodiment of the present invention, Fig. 14 is a front view of the display board of the embodiment of the present invention, and Fig. 15 is a side view of the same. , FIG. 16 is a cross-sectional view of FIG. 14. 1...Case, 3A...Timer display band, 6,1
1... Display board, 6A, 11A... Display band guide groove, 6B, 11B... Guide protrusion, 6C, 11C
... Display band introduction part, 6E, 11E ... Guide protrusion, 6D, 11D ... Erection body, 11I ... Fixed part, 7 ... Transparent scale plate.

Claims (1)

[Scope of Claim for Utility Model Registration] A flexible thin timer display band that is gradually wrapped around the timer part as the timer operates, and an elongated opening that communicates between the front and back surfaces, and this opening A display substrate made of synthetic resin having a timer display band introduced into the elongated opening from the back side at one end, and a display substrate formed thinner than the board thickness of the display substrate and integrated with both edges of the opening on the front side of the elongated opening. The guide protrusion provided in the slender opening is integrally connected only at both ends in the longitudinal direction of the slender opening, and a gap is formed between the guide protrusion provided at the slender opening and both side edges of the slender opening, forming a bottom wall of the slender opening. a construction body that is provided with a guide groove and forms a display band guide groove for guiding the movement of the timer display band between the construction body and the guide protrusion; A timer display mechanism for a cooker, comprising: a fixing part fixed to a case of the cooker to which the display board is attached; and a transparent scale plate fixed to the display board and closing the guide groove.