JPH07163457A - Device for adjusting hinge spring elastic force of button open/close type rice boiler - Google Patents

Abstract

PURPOSE: To calmly and smoothly open/close a cover by adjusting a winding angle of a pair of hinge springs engaged with a hinge shaft to open/close a cover body of an upper case formed at an upper part of a rice boiler main body at a specified distance to the hinge shaft for adjusting elastic force. CONSTITUTION: An upper case 13 is provided on a main body 12 of a rice boiler 11, and a hinge shaft 15 is inserted into holes provided in the upper case 13 and a cover 14 to freely open/close the cover 14. Two hinge springs 16 are engaged at a specified distance on both sides of a center of the hinge shaft 15. An upper arm 16a of the hinge spring 16 gets in contact with a stop member 18 which is perpendicular to an inner surface of the cover 14 at a specified distance. A guide step to guide the stop member 18 in opening/closing the cover 14 is provided, and the lock member 18 is guided to a receiving space 19 when the cover 14 is closed. Elastic force of a lower arm 16b of the hinge spring 16 is adjusted by rotating a screw at a support part 30.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hinge spring elastic force adjusting device for a button opening / closing type rice cooker, and more particularly, it compensates for the hinge spring elastic force lowered by repeated opening / closing operations of the pot lid. The present invention relates to a hinge spring elastic force adjusting device for a button open / close type rice cooker that can smoothly open and close the lid.

[0002]

2. Description of the Related Art Generally used electric rice cookers are classified into a handle type rice cooker in which a lid is manually opened and a button openable rice cooker in which a lid is automatically opened by pressing a button. Of the two types of rice cookers, in a button-opening type rice cooker 11 (hereinafter referred to as “rice cooker”), as shown in FIG. 5, an upper case 13 is installed on an upper portion of a rectangular parallelepiped-shaped rice cooker body 12. A lid 14 is installed on the top of the case 13. Behind the rice cooker 11, a hole (not shown) formed at the upper end corner of the upper case 13 and a lower end corner of the lid 14 are formed so that the upper case 13 and the lid 14 can be opened at a predetermined angle. A hole (not shown) is fitted into the hinge shaft 15 together. Two hinge springs 16 and 16 are fitted at a fixed distance in the center of the hinge shaft 15 so as to keep left-right balance, and in front of the rice cooker 11, an opening button is provided at the center of the upper end of the upper case 13. (Not shown) is installed.

The hinge springs 16 and 16 are
As shown in FIG. 6, the upper arms 16a, 16a of the upper arm 16a have an inner surface (that is, a vertical surface in FIG. 6) of the lid 14 on one side inside the lid 14 so as to be elastically supported in the opened state. ) Is contacted with a stop piece 18 formed perpendicularly to. When the lid 14 is opened or closed, the stop piece 1
In order to guide 8, the guide step 17 which is connected to the upper surface of the rice cooker main body 12 (see FIG. 5) and has an inclined surface on the upper side of one side is formed vertically inside the hinge shaft 15. A receiving space 19 for receiving the stop piece 18 when the lid 14 is closed is formed inside the guide step 17.

Further, the lower side of the hinge shaft 15 is vertically connected to the upper surface of the rice cooker main body 12, and a fixed distance is laterally provided at two locations on the lower side surface of the guide step 17 outside the guide step 17. A support stem 20 in the form of a staple iron needle bundle that is vertically connected is installed in the support stem 20, and the lower arms 16b and 16b of the hinge springs 16 and 16 are inserted into the support stem 20 with a certain distance. . At this time, a protrusion 21 is formed inside the support trunk 20 that is vertically connected to the upper surface of the rice cooker body 12, and the protrusion 21 is formed at a predetermined portion of the lower arms 16b and 16b of the hinge springs 16 and 16. Contact support.

A hook-shaped hinge portion cover (not shown) is externally attached to the support trunk 20 and is always detachably coupled to the upper case 13. In the button openable rice cooker 11 configured as above, the lid 14 is opened by the elastic force of the hinge springs 16 and 16 when the release button is pushed, and at this time, the stop piece 18 is moved from the receiving space 19 to the lid 1.
4, the hinge springs 16 and 16 are lowered as they are opened.
Is guided to the point (that is, the upper surface of the guide step 17) where the elastic force of the lid 14 balances the weight of the lid 14 with the force, and
Therefore, a constant angle (usually 90 to 100 °) will be maintained.

On the contrary, when the user closes the lid 14 and pushes the lid 14 in the closing direction, the balance between the elastic force of the hinge springs 16 and the weight of the lid 14 is lost. The lid 14 moves in the user's pressing direction and is closed.

[0007]

However, in the conventional rice cooker 11 operated as described above, when the lid 14 is repeatedly opened and closed for a certain period of time, the hinge spring 1 is opened.
Since the elastic force of the hinge springs 16 and 16 decreases, the point where the elastic force of the hinge springs 16 and 16 balances the weight and force of the lid 14 does not reach the upper surface of the guide step 17 and the lid 14 is not completely opened. Without the lid 14 at the moment the lid 14 is opened
There was a case where the swayed. Therefore, in such cases,
Since the lid 14 is not completely opened, it is troublesome to take out the contents in the rice cooker 11 or to manually reopen the lid when attaching and detaching the inner pot (not shown) after cooking. There is a problem that vibration noise is generated at the moment when the lid 14 is opened.

Further, when the lid is opened, if the elastic force of the hinge springs 16, 16 is too large, the stop piece 18
Even if is guided by the elastic force of the hinge springs 16 and 16 from the receiving space 19 to the upper surface of the guide step 17, the elastic force of the hinge springs 16 and 16 continues to be larger than the weight of the lid 14, causing severe vibration. In addition to the above, there is a problem that the elastic force of the hinge spring is reduced even when used for a short period of time.

Therefore, an object of the present invention is to open and close the button-opening type rice cooker and to adjust the elastic force of the rice-ring cooker hinge spring in order to reduce the noise generated at the moment when the lid is opened. To provide a hinge spring elastic force adjusting device.

[0010]

In order to achieve the above object, a hinge spring elastic force adjusting device for a button opening / closing type rice cooker according to the present invention comprises an upper case formed on an upper portion of a rice cooker main body, and the upper portion. A lid formed on the case; a hinge shaft inserted into a hole formed at an upper end corner of the upper case on one side behind the upper case and a lower end corner of the lid; and a fixed distance from the hinge shaft. It is composed of a pair of hinge springs fitted with each other and elastic force adjusting means for adjusting the winding angle of the hinge spring with respect to the hinge axis.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of a hinge spring elastic force adjusting device for a button openable rice cooker according to the present invention will be described below with reference to the accompanying drawings. As shown in FIG. 1, an upper case 13 is installed on an upper portion of a rice cooker body 12 having a rectangular parallelepiped shape, and a lid 14 is installed on an upper portion of the upper case 13. Behind the rice cooker 11, a hole (not shown) formed at the upper end corner of the upper case 13 and a lower end corner of the lid 14 are formed so that the upper case 13 and the lid 14 can be opened at a predetermined angle. A hole (not shown) is fitted into the hinge shaft 15 together.
Two hinge springs 16 and 16 are fitted at a fixed distance in the center of the hinge shaft 15 so as to keep left-right balance, and in front of the rice cooker 11, an opening button is provided at the center of the upper end of the upper case 13. (Not shown) is installed.

As shown in FIG. 2, the upper arms 16a and 16a of the hinge springs 16 and 16 are formed on one side of the lid 14 at a predetermined distance and perpendicular to the inner surface of the lid 14. The stop piece 18 is touching.
A guide having an inclined surface on one side inside the hinge shaft 15 is connected to the upper surface of the rice cooker main body 12 (see FIG. 1) to guide the stop piece 18 when the lid 14 is opened or closed. A step 17 is formed vertically, and a stop piece 18 is provided inside the guide step 17 when the lid 14 is closed together with the guide step 17.
A receiving space 19 for receiving the is formed.

As shown in FIG. 3, the hinge spring elastic force adjusting device of the button opening / closing type rice cooker according to the present invention has a hinge shaft 1 as shown in FIG.
5, two first supporting trunks 31 and 31 which are vertically connected to the side surface of the guide step 17 with a certain distance therebetween, and a second supporting trunk 32 which is vertically connected to the upper surface of the rice cooker 12. And a hinge spring 1 is formed.
6, 16 lower arms 16b, 16b are the two first
The support trunks 31 and 31 are inserted with a certain distance therebetween. A predetermined portion of the side wall of the second support trunk 32 is penetrated to form a screw hole 34, and two adjusting screws 35, 35 are spaced from the second support trunk 32 at a predetermined distance. From the inside to the inside.

Then, the first support trunks 31, 31 and the second support trunks 31, 31
A lever plate 33 is inserted inside a hole 31 a formed between the support trunk 32, and the upper portion of the lever plate 33 is bent into an angle shape and supported on the upper surface of the second support trunk 32.
One side of the lower part of the lever plate 33 has hinge springs 16 and 1.
6, the lower arms 16b, 16b contact predetermined portions, and the other one side of the lower arms contacts the ends of the adjusting screws 35, 35.

At this time, the lever plate 33 contacting the hinges 16 and 16 has the adjusting screw 3 as shown in FIG.
The force generated by the movement of 5, 35 is the hinge spring 1
Lower arms 16b, 16b of two hinge springs 16, 16 formed at a certain distance to ensure transmission to the lower arms 16b, 16b of 6, 16 without disconnection.
It is formed to have a width larger than the space between the two. The first support trunks 31, 31 are hinge springs 16, 1.
The lower arms 16 of the hinge springs 16 and 16 are arranged so as not to interfere with the insertion of the lower arms 16b of 16 and 16b.
b and 16b are installed one by one outside the insertion position, and the second support stem 32 is installed with the same width as the lever plate 33 to support the lever plate 33 having a large width as described above. .

Therefore, the upper side of each of the lower arms 16b and 16b of the hinge springs 16 and 16 has the hinge shaft 1.
5, the side portions of the lower arms 16b and 16b are inserted between the two first support stems 31 and 31, so that the lever plates 33 are always kept in contact with each other. A hook-shaped hinge portion cover (not shown) is externally attached to the first support trunks 31 and 31 and the second support trunk 32 and is always detachably coupled to the upper case 13.

The operation relationship of the hinge spring elastic force adjusting device of the button opening / closing type rice cooker of the present invention constructed as above will be described in more detail as follows. Upper case 13
When the release button formed on one side of the hinge spring 16 is pushed, the elastic force of the hinge springs 16 and 16 causes a balance between the weight of the lid 14 and the elastic force of the hinge springs 16 and 16 from the receiving space 19 (that is, , The upper surface of the guide step 17) is opened, and the user pushes the lid 14 in the closing direction to close the lid 14. When the opening / closing operation of the lid 14 is repeated for a certain period of time, the elastic force of the hinge springs 16 and 16 decreases as in the conventional rice cooker 11.

When the elastic force of the hinge springs 16 and 16 is reduced as described above, the hinge portion covers formed outside the first and second support stems 31 and 31 are removed, and then the Two adjusting screws 35 inserted into the side wall of the 2 support trunk 32 from the outside to the inside of the rice cooker 11,
Tighten 35 in the direction of moving left in FIG. As a result, the adjusting screws 35, 35
Lower part of the hinge springs 16, 16 contacting the lower part on the opposite side of the lever plate 33 contacted by the adjusting screws 35, 35 by moving the lower part of the lever plate 33 contacting the end part of the Since the arms 16b, 16b move in the direction in which the hinge springs 16, 16 are tightened and the hinge springs 16, 16 are compressed, the elastic force of the hinge springs 16, 16 increases.

On the contrary, if it is felt that the lid 14 is opened faster than necessary, the elastic force of the hinge springs 16, 16 needs to be adjusted to a small value for safety in handling. 1 After removing the hinge cover formed on the outside of the support trunks 31 and 31 and the second support trunk 32, the adjusting screws 35 and 35 are moved to the right in FIG. Solve each. Then,
Adjustment screw 3 by the restoring force of the hinge springs 16 and 16
Lower parts of the hinge springs 16 and 16 that are in contact with the lower part of the lever plate 33 that is in contact with the lever plates 5 and 35 and lower parts of the lever plate 33 that are in contact with the ends of the adjusting screws 35 and 35. And hinge spring 16,
16 to move in the direction to release the hinge springs 16, 1
Since 6 is relaxed, the elastic force of the hinge springs 16 and 16 becomes small.

By adjusting the elastic force of the hinge springs 16 and 16 in this way, the elastic force applied to the stop piece 18 when the lid is opened is changed,
An appropriate elastic force is always maintained in the stop piece 18.

[0021]

As described above, since the hinge spring elastic force adjusting device of the button opening and closing type rice cooker according to the present invention can always maintain the elastic force of the hinge spring appropriately, the lid can be opened and closed smoothly. Improve the reliability of
At the moment of opening the lid, it has the effect of preventing vibration noise.

[Brief description of drawings]

FIG. 1 is a perspective view of a button openable rice cooker to which an embodiment of the present invention is applied.

2 is a cross-sectional view taken along the line BB in FIG.

FIG. 3 is an enlarged view of a C portion of FIG.

FIG. 4 is a plan view seen from above (in the direction of the arrow) in FIG.

FIG. 5 is a perspective view of a conventional button opening and closing type rice cooker.

6 is a cross-sectional view taken along the line AA of FIG.

[Explanation of symbols]

 11 ... rice cooker 12 ... cooker main body 13 ... upper case 14 ... lid 15 ... hinge shaft 16 ... hinge spring 16a ... hinge spring upper arm 16b ... hinge spring lower arm 17 ... guide step 18 ... stop piece 19 ... receiving space 30 ... support Part 31 ... 1st support trunk 32 ... 2nd support trunk 33 ... Lever plate 34 ... Screw hole 35 ... Adjustment screw

Claims (3)

[Claims] 1. An upper case formed on an upper part of a rice cooker main body, a lid formed on the upper case, and a hole formed at an upper corner of the upper case on one rear side of the upper case. And a hinge shaft inserted into a lower end corner of the lid, a pair of hinge springs fitted at a fixed distance to the hinge shaft, and an elastic force adjustment for adjusting a winding angle of the hinge spring with respect to the hinge shaft. An elastic force adjusting device for a hinge spring of a button opening and closing type rice cooker, comprising: 2. The elastic force adjusting means includes two first supporting trunks formed at a lower portion of the hinge shaft and vertically connected to a side surface of the guide step with a certain distance therebetween, and a lower portion of the hinge shaft. A second support trunk formed perpendicularly to the upper surface of the rice cooker main body, a screw hole formed through the side wall of the second support trunk, and an adjusting screw connected to the screw hole, And a lever plate inserted into a hole formed between the first support trunk and the second support trunk for transmitting a force generated by the movement of the adjusting screw to the lower arms of the two hinge springs. The hinge spring elastic force adjusting device for a button opening and closing type rice cooker according to claim 1. 3. The upper part of the lever plate is formed in an angle shape and is supported on the upper surface of the second support trunk, one side of the lower part is in contact with a predetermined part of the lower arm of the hinge spring, and one side of the other lower part. The hinge spring elastic force adjusting device for a button opening and closing type rice cooker according to claim 2, wherein is contacted with an end of the adjusting screw.