JPS62272492A - Vibration-proof apparatus for microwave oven - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention 3. Detailed Description of the Invention [Object of the Invention] (Industrial Application Field) The present invention provides a high voltage transformer (high voltage 1- This invention relates to a vibration isolating device for a microwave oven that prevents noise caused by leakage magnetic flux from a microwave oven.

(Prior art) This type of microwave oven Hoken core has already been proposed.
It is constructed as shown in FIGS. 6 to 9.

That is, in FIGS. 6 to 9, there is an oven 2 in the case body (cabinet 1-) 1 with an opening 91a.
An oven frame 4 is provided which divides and forms the machine room 3. A magnetron 5 is provided at one corner of the oven frame 4 with its antenna 5a protruding into the oven 2. There is. Further, an exhaust port 6 is bored in the bottom plate 1b of the case body 1 located in the machine room 3, and a high voltage transformer (high voltage transformer) is provided in the bottom plate 1b near the exhaust port 6. 7 is attached. Furthermore, a pair of angle-shaped anti-vibration rubbers 8a and 8b are interposed on both shoulders of the high-voltage transformer 7 and are in pressure contact with both walls of the oven frame 4 and the case body 1. An intake port 9 is provided in the back plate 1C of the case body 1 inside the chamber 3. Furthermore, on the back plate 1C near the air intake port 9, a high voltage capacitor "10" and a cooling fan 11 are connected to the magnetron 5 and high voltage transformer 7 in the machine room 3.
'9 can be used as a cooling section.

The electric circuit shown in FIG. 9 is incorporated into the above-mentioned microwave oven, and the power supply circuit I incorporated in this electric circuit includes a door switch 12, a main switch 13,
and a timer switch 1 connected to a timer 15 to be described later.
4 are connected in series to the power supply circuit I.
includes a timer 15 and a motor 11a of the cooling fan 11.
A high voltage transformer 7 is connected to the magnetron 5, which is equipped with a rectifier circuit including a high voltage rectifier 25, a high voltage capacitor 10, and the like.

Therefore, in the above-mentioned microwave oven, when the food to be cooked is put into the oven 2 and the magnetron 5 is energized, the food to be cooked in the oven 2 is heated and cooked.

On the other hand, during cooking, the pressure 1 to lance 7 in the machine room 3
In Figure 6! As shown by the single line, in order to emit leakage magnetic flux and vibrate each wall surface of the case body 1 and the oven frame 4, and to emit M M due to chatter sound, each anti-vibration rubber 3a, ab is used. It looks like this.

(Problems to be Solved by the Invention) However, each of the vibration isolating rubbers 8a and Qb used in the vibration isolating device of the microwave oven described above cannot be installed by inserting one's hand into the narrow machine '93 and using adhesive. Since it is designed to be inserted and installed, it not only requires skill and is troublesome to assemble.
Since the high-voltage transformer 7 generates heat (approximately 100°C), it requires an expensive heat-resistant adhesive, which increases the cost. There is a problem with this point.

The present invention has been made in view of the above-mentioned circumstances, and includes a high-voltage transformer attached to the bottom plate of a machine room, and a case body and an oven frame that are affected by the leakage magnetic flux above the high-voltage transformer. Install connecting rods across both walls of I
& To provide a vibration isolating device for a microwave oven, the purpose of which is to prevent movement and noise from occurring.

[Structure of the idea]

(Means and effects for solving the problem) The present invention includes an oven frame body that separates and forms an oven and a machine room in a case body, a high voltage transformer attached to the bottom plate of this machine room, Connecting rods are installed between the case body and both walls of the oven frame body, which are affected by leakage magnetic flux from the upper part of the high-voltage transformer, to prevent vibrations and noise caused by leakage magnetic flux from the high-voltage transformer. It is something.

(Example) An illustrated embodiment of the present invention will be described below.

It should be noted that the present invention will be described with the same reference numerals attached to the same constituent members as in the above-described specific example.

In FIGS. 1 and 2, reference numeral 1 denotes three case bodies equipped with an opening door 1a, and inside this case body 1,
An Ao-bun frame 4 is provided which separates and forms the oven 2 and the machine room 3. At one corner of the oven frame 4, a magnetron 5 projects its antenna 5a into the oven 2. It is provided. Further, a high voltage I/lance 7 is attached to the bottom &1a of the case body 1 located in the machine room 3, and the case body 1 receives the r2 effect of leakage magnetic flux from the upper side of the high voltage transformer 7. A connecting rod 16 is mounted between both wall surfaces of the oven frame 4 so as to come into contact with the top surface of the high-voltage transformer 7, and is secured with respective setscrews.

Therefore, even if the high-voltage transformer 7 leaks magnetic flux during cooking, the connecting rod 1G exerts a reinforcing effect to prevent g-sounds caused by vibrations and chatter sounds.

Next, another embodiment of the present invention shown in FIG.
and σ1d are formed, and a connecting rod 16 is mounted between the reinforcing concave portions 1d and 4a, and fixed with base screws.

On the other hand, in another embodiment of the present invention shown in FIGS. 4 and 5, six holes [41
7 is locked with a locking pin 17a that is integrated with the locking pin 17a, thereby making it possible to absorb vibrations. In this case, a part of the case main body 1 is fixed to the bottom plate 1b with an upper screw 18.

〔Effect of the invention〕

As described above, according to the present invention, the oven frame 4 that separates the oven 2 and the machine room 3 is provided in the case body 1, and the high voltage transformer 7 is attached to the bottom plate 1b of the machine room 3. Since the connecting rod 16 is installed between the case body 1 and both walls of the oven frame 4, which are affected by the leakage magnetic flux from the upper part of the high voltage transformer 7, the heat resistance is improved and the oven is stable for a long time. Not only can the anti-vibration effect be maintained by
It is easy to assemble, does not require heat-resistant adhesive, and can be provided at low cost.

[Brief explanation of the drawing]

FIG. 1 is a front view showing a part of a microwave oven equipped with the i-proof device of the present invention exposed to oxidation, FIG. 2 is a perspective view showing the essential parts of the present invention, and FIGS. Figure 5 shows other embodiments of the present invention; Figure 6 is a front view of a part of a microwave oven equipped with an already proposed vibration isolator; 8 is a cross-sectional view of FIG. 6, and FIG. 9 is an electric circuit diagram incorporated into the microwave oven. 1... Case body, 2... Oven, 8... Machine room, 4... Oven frame, 5... Magnetron, 7
...High voltage transformer, 16...Connection rod, "17...
Anti-vibration material. Applicant's Representative Sa Hi - Male Figure 3 Tail Figure 4 Figure 5

Claims (1)

[Claims] 1. An oven frame is provided in the case body to form an oven and a machine room separately, and a high-voltage transformer is attached to the bottom plate of the machine room, and leakage magnetic flux from the upper part of the high-voltage transformer is A vibration isolating device for a microwave oven, characterized in that a connecting rod is installed between the case body and both wall surfaces of the oven frame body which are affected. 2. The vibration isolating device for a microwave oven as set forth in claim 1, characterized in that a vibration isolating material is interposed at each end of the connecting rod. 3. The vibration isolating device for a microwave oven according to claim 1 or 2, characterized in that a connecting rod is provided in contact with the upper part of the high voltage transformer.