JP5460449B2 - Induction heating cooker - Google Patents

Description

  The present invention relates to a high frequency cooking device, and more particularly to a door mounting structure that opens and closes a front opening of a main body of a high frequency cooking device.

  A door hinge, door arm and door spring supporting the door are unitized in a conventional high-frequency cooking device, and a door having a D-cut door pin is attached through an insertion path provided in the door hinge, and the door arm is irreversibly operated. There is one that uses a structure to prevent the door from being detached after mounting (see, for example, Patent Document 1).

  In addition, there is a door provided with a cylindrical rotation shaft at both ends of the door and a protrusion provided with a round hole for inserting and holding the rotation shaft in the main body (see, for example, Patent Document 2).

JP-A-6-221573 (page 3, FIG. 1) JP-A-9-264539 (page 4-5, FIG. 1)

  In the invention of Patent Document 1, when inserting the D-cut door pin into the insertion path, if the direction of the D-cut of the door pin does not match the direction of the insertion path, the door pin hits the insertion path and is inserted. Not only is the force applied to the path widened, but the insertion path is widened to cause play, and the strength is reduced. In order to prevent such a problem, the assembling worker has to pay close attention to the insertion direction of the door pin, which causes a problem that the assembling workability is poor.

  In addition, since the door pin is D-cut, if there is a burr or the like in the cut part, the door may not rotate smoothly and abnormal noise may occur, which reduces the strength of the door and shortens the opening / closing life. There are problems such as becoming hard. For this reason, post-processing and surface finishing accuracy of the D-cut of the door pin are required, so that processing is troublesome.

  In addition, since the door is attached to the main unit with the door tilted downward than during normal use, the free end of the door can easily come into contact with the belt conveyor, jigs, equipment, etc. on the assembly line, resulting in unsmooth transport. There is a risk of damage.

  In the invention of Patent Document 2, when attaching the door, close the door toward the front side of the opening of the main body, and insert the pin provided on the door hinge into the round hole provided on the main body hinge. Since the door must be opened larger than in normal use and the door must be slid laterally, assembly is cumbersome and workability is poor.

In addition, in order to slide the door in the horizontal direction, it is necessary to provide a large cutout to avoid the main body hinge on the door side so that the main body hinge does not interfere with the door, thereby reducing the size and design of the door. There is a problem.
In addition, since the door is mounted in a tilted state, its free end is likely to come into contact with the belt conveyor, jigs, equipment, etc. of the assembly line, and there is a risk of unsmoothed or damaged conveyance.

  The present invention has been made in order to solve the above-described problems. A highly reliable high-frequency heating cooker that can be smoothly opened and closed without fear of detaching the door, and that can be easily assembled and maintained. It is intended to provide.

  The high-frequency heating cooker according to the present invention includes a main body provided with a heating chamber and an opening through which the object to be heated is taken in and out, and substantially cylindrical door pins projecting from lower outer surfaces on both sides. A door that opens and closes the opening of the part, has a fitting hole into which the door pin is fitted at the front end, and is provided with a roller and fixed to both sides of the base of the body part, A locking plate having an engaging portion at both ends and rotatably connected to the joint base, and a slide plate disposed on the roller of the joint base, and provided on both sides of the door at the front end. It has an engaging portion that engages with the door arm pin of the door hinge, and is interposed between the door arm that regulates the rotation range of the door, and the main body side of the door arm and the main body side of the locking plate. And a spring for biasing the opening and closing operation of the door.

  According to the present invention, the door pin provided on the door and connected to the main body is fitted in the fitting hole provided in the joint base and is locked by the engaging portion of the locking plate, so there is no risk of detachment and smooth. In addition, it is possible to obtain a highly reliable high-frequency heating cooker that can be easily opened and closed, can be easily attached to and detached from the main body, and can improve assembly workability and maintenance workability.

1 is an external perspective view of a high-frequency heating cooker according to an embodiment of the present invention. It is a perspective view which shows the state which opened the door of FIG. It is a perspective view which shows the attachment state of the door to the base of a main-body part. FIG. 4 is a perspective view of the joint base and the locking plate of FIG. 3. It is a perspective view of the door arm of FIG. It is explanatory drawing of the principal part of FIG. 3 explaining the attachment procedure of the door to a main-body part. It is explanatory drawing of the principal part of FIG. 3 explaining the attachment procedure of the door to a main-body part. It is explanatory drawing of the principal part of FIG. 3 explaining the attachment procedure of the door to a main-body part.

  1 and 2 showing a high-frequency heating cooker according to an embodiment of the present invention, reference numeral 1 denotes a box-shaped main body having an open front surface, which includes a base 7 and a case 8, and includes a heating chamber therein. Heating means (not shown) such as 2 and magnetron is provided, and a front panel 3 having a heating chamber opening 4 through which a heated object is taken in and out of the heating chamber 2 is provided on the front side. Reference numeral 5 denotes a slit-like arm hole provided on both sides of the front panel 3, and reference numeral 6 denotes a slit-like joint hole provided in the lower part of the arm hole 5.

  A door 10 is provided on the front side of the main body, and opens and closes the heating chamber opening 4. The door main body 11, the front door cover 12 that covers the front and outer periphery of the door main body 11, and the rear side of the door main body 11 are covered. A see-through window 14 is provided corresponding to the heating chamber opening 4 of the main body 1, which is composed of a door cover 13. An operation unit 15 is provided adjacent to the see-through window 14. Reference numeral 12a denotes a handle of the door 10.

FIG. 3 shows a structure for attaching the door 10 to the main body 1, 7 is a base of the main body 1, and 10 is a door attached to the base 7. In FIG. 3, the heating chamber 2 of the base 7, the front panel 3 and the case 8, and the front door cover 12 and the rear door cover 13 of the door 2 are omitted.
Reference numeral 16 denotes a pair of substantially cylindrical door pins projecting outward at both lower portions of the door body 11. Reference numeral 17 denotes a door hinge attached by spot welding or the like on both sides of the door body 11 above the door pin 16, and provided with substantially cylindrical door arm pins 18 projecting inward.

Reference numeral 20 denotes a pair of joint bases attached to both upper surfaces on the front side of the base 7, and 30 denotes a locking plate rotatably connected to the inside of the joint base 20.
As shown in FIG. 4, the joint base 20 includes a main body 21 including a horizontal portion 21a, a vertical portion 21b that is shorter than the horizontal portion 21a and protrudes higher on the front side (right side in the drawing), and a front end portion of the vertical portion 21b. The joint portion 22 is bent outward and then extended to the front side. A fitting hole 23 that opens to the front side is provided at the tip of the joint portion 22. And the roller 24 is rotatably attached to the top part of the vertical part 21b by the roller pin 24a.

The locking plate 30 is approximately the same length as the joint base 20 and is substantially the same length as the vertical portion 21b of the joint base 20, and the front and rear sides of the main body 31 are bent outward and then extended in the front-rear direction. The arm portions 32a and 32b are formed symmetrically in the front-rear direction. Engagement portions 33a and 33b that open downward are provided at the distal ends of the arm portions 32a and 32b. 34a and 34b are formed.
The locking plate 30 can be rotated to the vertical portion 21b of the joint base 20 by caulking the shaft 35 on the base 7 side (left side in the drawing) from the center of gravity and above the door pin 16. It is connected and unitized.

  Reference numeral 40 denotes a pair of left and right door arms that regulate the opening angle (rotation range) of the door 10 with respect to the main body 1. As shown in FIG. 5, the head 41 and the trunk 42 are located on the rear side (base 7 side). And a tail portion 43. A locking portion 44 is provided at the tip of the head 41 to lock one end of a spring, which will be described later, and a stopper extending substantially in an arc shape at the bottom of the head 41. A portion 45 is formed. Further, a sliding contact portion 46 that slides on the roller 24 of the joint base 20 is provided from the stopper portion 45 to the lower edge of the trunk portion 42, and an engagement portion 47 that engages with the door arm pin 18 is provided on the tail portion 43. It has been. Reference numeral 50 denotes a spring interposed between the engaging portion 33 a of the locking plate 30 and the locking portion 44 of the door arm 40.

Next, an example of a procedure for attaching the door 10 to the main body 1 of the high-frequency heating cooker according to the present embodiment configured as described above will be described.
First, as shown in FIG. 3, the horizontal portion 21 a of the main body 21 of the joint base 20 to which the roller 24 is attached and the locking plate 30 is connected to both upper surfaces on the front side (right side in the drawing) of the base 7, The joint portion 22 protrudes from the front edge portion of the base 7 and is fixed by screws.

  Next, the heating chamber 2 and the like are attached to the base 7. Further, the front panel 3 is attached to the front edge of the base 7 by fitting the joint holes 6 provided on the left and right sides thereof to the joint 22 of the joint base 20.

  Next, as shown in FIG. 6, the door 10 is disposed in a standing state in front of the front panel 3, and the door pins 16 provided on the left and right sides of the door 10 are fitted to the left and right joint bases 20 attached to the base 7. When the door 10 is pressed toward the base 7 in alignment with the joint hole 23, the inclined surface 34 b provided at the distal end portion of the locking plate 30 rotatably connected to the joint base 20 by the shaft 35 is pushed up by the door pin 16. When the door 10 is further pushed in, the door pin 16 disengages from the inclined surface 34b of the locking plate 30 as shown in FIG. 6 (b), and enters the fitting hole 23 of the joint portion 22 as shown in FIG. At the same time, the locking plate 30 returns to the original position, and the engaging portion 33 b engages with the door pin 16 to lock the door pin 16.

Next, the tail portions 43 of the left and right door arms 40 are slidably brought into contact with the rollers 24 of the joint base 20 from the back side (base 7 side) of the front panel 3, and the left and right door arms 40 are provided on the front panel 3. The engaging portions 47 are engaged with the door arm pins 18 provided on the door hinge 17 as shown in FIG. Further, a spring 50 is interposed between the locking portion 44 provided on the head 41 of the door arm 40 and the engaging portion 33a of the locking plate 30, and the door arm 40 is rotated counterclockwise around the roller 24. The door 10 is biased so as to be able to rotate in the direction, and the turning force in the closing direction is applied to the door 10.
Thereby, the attachment to the main-body part 1 of the door 10 is complete | finished. In addition, the attachment procedure to the main-body part 1 of said door shows the example, and is not limited to this.

  As is clear from the above description, according to the present embodiment, the door 10 is pushed in front of the base 7 (main body part 1) and pushed into the main body part 1 to be attached to the main body part 1. As in the prior art, the troublesome work of opening and tilting the door downward and tilting it and sliding it to the left and right as in the prior art becomes unnecessary, and the assembly workability can be improved.

In addition, since the door 10 is attached to the main body 1 with the door 10 upright, it may become unsmoothed or damaged due to contact with the belt conveyor, jigs, equipment, etc. in the assembly line as in the past. There is no.
Further, when assembling, no extra space is required on the front side or in the lateral direction, and it is not necessary to provide an escape portion in the door in order to avoid interference of parts, so that the door 10 is reduced in size and design. There is nothing.

  Further, since the door pin 16 is formed in a substantially cylindrical shape, no burr or the like is generated, and therefore, manufacture and assembly are easy, the door 10 can be smoothly rotated, and an abnormal noise is generated. Nor.

In the high-frequency heating cooker configured as described above, for example, when the door 10 is opened with the handle 12a as shown in FIG. 2 to heat the object to be heated, the door 10 is as shown in FIG. Then, the door pin 16 is rotated about the axis. At this time, the door arm 40 engaged with the door arm pin 18 of the door hinge 17 provided on the door 10 by the engaging portion 47 has its sliding contact portion 46 rotated in the clockwise direction along the roller 24 of the joint base 20. While moving to the front side, the stopper 45 hits the roller 24 and stops.
At this time, since the door 10 exceeds the rotational dead center, the door 10 is held at that position (on the same plane as the base 7).

  When the handle 12 a is lifted slightly to close the door 10, the door arm 40 moves to the rear side while rotating counterclockwise along the roller 24 by the spring 24, and passes through the door arm pin 18 of the door hinge 17. The door 10 connected to the door arm 40 rotates about the door pin 16 and closes the front side of the main body 1. The state at this time is shown in FIGS.

  According to the present invention, the door 10 is arranged in a standing state on the front side of the main body 1 and is attached to the main body 1, so that assembly work is easy and workability can be improved.

  In addition, the door pin 16 provided on the door 10 is fitted in the fitting hole 23 provided in the joint portion 22 of the joint base 20 fixed to the base 7, and the locking plate 30 is rotatably connected to the joint base 20. The center of rotation of the locking plate 30 is provided on the main body 1 side (rear) and above the door pin 16, and the locking plate 30 and the door arm 40 are Since a clockwise rotational force is applied to the locking plate 30 by the spring interposed therebetween, the door pin 16 is securely locked by the engaging portion 33b of the locking plate 30 and is not detached, improving reliability. can do.

  Further, the door arm 40 that is engaged with the door arm pin 18 provided on the door hinge 17 by the engaging portion 47 provided on the tail portion 43 is counteracted by a spring 50 interposed between the head 41 and the locking plate 30. Since the turning force in the clockwise direction is applied to urge the door 10 in the closing direction, the locking portion 47 securely locks the door arm pin 18 and does not come off.

  In the present invention, if the spring 50 interposed between the locking plate 30 and the door arm 40 is removed, the door pin 16 by the locking plate 30 and the door arm pin 18 by the door arm 40 can be unlocked. Since the door 10 can be easily detached from the main body 1 by pulling 10 toward the front, the door 10 can be easily attached and detached, and the assembling property and the maintenance property can be improved.

  DESCRIPTION OF SYMBOLS 1 Main body part, 2 Heating chamber, 3 Front panel, 5 Arm hole, 6 Joint part hole, 7 Base, 10 Door, 16 Door pin, 17 Door hinge, 18 Door arm pin, 20 Joint stand, 23 Fitting hole, 24 Roller , 30 locking plate, 33a, 33b engaging portion, 34a, 34b inclined surface, 40 door arm, 47 engaging portion, 50 spring.

Claims (4)

A heating chamber and a main body portion having an opening through which the object to be heated is taken in and out; a substantially cylindrical door pin projecting from the lower outer surface on both sides; and a door for opening and closing the opening portion of the main body portion. Have
A joint base having a fitting hole into which the door pin is fitted at the front end, a roller provided and fixed to both sides of the base of the main body, and an engaging portion at both ends, the joint base A locking plate that is pivotably connected to the roller, and an engagement portion that is slidably disposed on the roller of the joint base and engages with door arm pins of door hinges provided on both sides of the door at the front end. A door arm that regulates a rotation range of the door, and a spring that is interposed between the main body portion side of the door arm and the main body portion side of the locking plate and biases the opening and closing operation of the door. A high frequency heating cooker characterized by comprising. The joint base includes a main body composed of a horizontal part and a vertical part fixed to the base of the main body part, and a fitting in which the front end of the vertical part extends to the front side and the door pin is fitted to the front end part. A joint portion provided with a hole, and a roller rotatably attached to the vertical portion,
The locking plate rotatably connected to the joint base has an arm portion extending from both sides of the main body, and a door pin fitted in the fitting hole of the joint base is provided at the front end portion of the arm portion. The high frequency heating cooker according to claim 1, wherein an engaging portion to be locked is provided, and an inclined surface formed on a front surface side of the engaging portion.   The high-frequency cooking device according to claim 1 or 2, wherein the locking plate is rotatably connected to the joint base on the main body side from the center of gravity of the locking plate and above the door pin.   The high-frequency cooking device according to any one of claims 1 to 3, wherein the locking plate has a symmetrical shape in the front-rear direction.

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