JPS6327630B2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a storage door pivoting device for pivotably opening and closing a door having a frame-shaped sealing member on the inner peripheral edge thereof to an opening in a storage main body. Regarding.

[Technical background of the invention]

Conventionally, refrigerators have a door 1 for the refrigerator compartment and a door 2 for the freezer compartment, as shown in FIGS. 1 and 2.
is pivotally supported in the opening of a refrigerator main body 3, which is a storage main body, via hinge pins 4 so as to be openable and closable, and sealing members 5 and 6 are arranged in a frame shape on the inner peripheral edges of the doors 1 and 2 to provide an airtight seal. It is designed to maintain and insulate.

[Problems with background technology]

In the above-mentioned conventional refrigerator, when opening and closing the door 1, the door 1 rotates around the hinge pin 4 as shown in FIG. I scratched the part 1a on the hinge pin 4 side,
This makes it difficult to open and close the door 1, and the sealing member 5 may become deformed or worn out, shortening its useful life.Furthermore, cold air leaks and power consumption increases accordingly. There were other drawbacks. The same can be said of the door 2 for the freezer compartment.

[Purpose of the invention]

The present invention has been made in view of the above circumstances, and its purpose is to prevent the sealing member from rubbing against the opening edge of the storage main body when opening and closing the door, and to smoothly open and close the door. Furthermore, it is an object of the present invention to provide a storage door pivoting device capable of pivoting two upper and lower doors without increasing the distance between the two doors.

[Summary of the invention]

In the present invention, a shaft and a guide pin are formed on one side of a pivot body attached to the storage main body and both pivoted supported bodies attached to two upper and lower doors, and a long groove shape extending in the front and back direction is formed on the other side. A shaft fitting groove is formed to fit the shaft and move the pivoted body forward when each door is opened, and a shaft fitting groove is formed in a notch shape to fit with the guide pin. A guide groove is formed that prevents rotation of each pivoted body about the axis when each pivoted body moves, and that disengages from the guide pin after the movement and allows the rotation. , each door is moved forward when the door is opened, and a first guide surface and a second guide surface having an arc shape are formed on the upper and lower surfaces of the pivot body, and one of the pivoted a rotation guide that is in sliding contact with the first guide surface is formed on the body, a second guide surface is formed on the other supported body, and a rotation guide that is in sliding contact with the first guide surface is formed on the one supported body. A rotation guide is formed that holds the fitting position of the shaft in the shaft fitting groove there after the movement of one of the pivoted bodies and guides the rotation of the pivoted body about the shaft, and the other The second guide surface slides into contact with the second pivoted body, and after the other pivoted body moves, the fitting position of the shaft with respect to the shaft fitting groove is kept there, and the pivoted body is supported around the shaft. A rotation guide that guides the rotation of the body is formed so that the door can be smoothly rotated when the door moves forward, and the diameter of the first guide surface and the second guide surface is The feature is that the upper and lower doors can be pivotally supported so that the distance between them is small by making the doors different and forming a stepped shape.

[Embodiments of the invention]

3 to 19 for one embodiment of the present invention.
This will be explained with reference to the figures. First, in Figure 3, 1
Reference numeral 1 denotes a refrigerator main body, which is a storage main body, and inside thereof, a refrigerating chamber 12 and a freezing chamber 13 are partitioned by a partition wall 11a. 14 is the door for the refrigerator compartment,
Reference numeral 15 denotes a door for the freezer, and seal members 16 and 17 are arranged in a frame shape on the inner peripheral edge of each door 14 and 15, respectively, and a handle is provided on the outer surface of each door 14 and 15. 18 and 19 are arranged. Now, 20, 21, and 22 are door pivot devices, and the door pivot device 20 in the middle is the upper part of the door 14 and the door 15.
The lower door pivot device 21 is provided to support the lower part of the door 14, and
The upper door pivot device 22 is provided to support the upper portion of the door 15. The door pivot device 20,
21 and 22, the door pivot device 20 will be described first. In FIGS. 4 to 7, reference numeral 23 denotes a pivot body, which is composed of a mounting portion 24 and a tongue portion 25 projecting forward from the mounting portion 24.
3 is attached to the front right end of the partition wall 11a of the refrigerator main body 11 via the attachment part 24. A shaft 26 is protruded from the tip of the upper surface of the tongue portion 25. A collar 27 is rotatably fitted onto the shaft 26, and the collar 27 is secured with a screw 28. Further, at the base end of the upper surface of the tongue portion 25,
A guide pin 29 is protruded from the rear of the shaft 26, and the guide pin 29 has a collar 3.
0 is loosely fitted so as to be rotatable, and this collar 30 is prevented from coming off with a screw 31. A first guide surface 32 is formed at the tip of the tongue portion 25, and has an arc shape centered on the shaft 26. Further, on the right side of the upper base end of the tongue portion 25, a diagonal fitting guide 33 is located on the right side of the guide pin 29.
is formed. A protrusion 35 that constitutes a part of the toggle mechanism 34 is formed on the left side of the base end of the upper surface of the tongue portion 25, and this protrusion 35 has a top at an intermediate portion in the front-rear direction. It has a shape having inclined surfaces 35a and 35b at the front and rear parts. A plastic spacer 36 is fitted around the base of the shaft 26, and as shown in FIG. 8, a flat surface 37 is formed at the front of the upper surface of the spacer 36. A slanted surface 38 is formed at the intermediate portion and slopes downward from the flat surface 37 toward the rear, and a flat surface 39 is formed at the rear portion in series with the slanted surface 38. And this sloped surface 38
In this case, the right half 38a is formed to be slightly shifted forward with respect to the left half 38b.
The starting point of descent of 8a is located in front of that of the left half 38b, and the flat area of the front flat surface 37 is larger in the left half.
Furthermore, a shaft 40 and a guide pin 41 are protruded from the lower surface of the tongue portion 25 of the pivot body 23 so as to be located directly below and concentrically with the shaft 26 and guide pin 29. Like the shaft 26, the shaft 40 is provided with a collar 42 and a screw 43 that prevents it from coming off, and the guide pin 41 is provided with a collar 44 and a screw 45 that prevents it from coming out like the guide pin 29. is provided. Further, a second guide surface 46 having an arc shape centered on the shaft 40 is formed at the tip of the lower surface of the tongue portion 25, and this second guide surface 46 can be seen from FIGS. 5 and 6. It is set in a stepped shape so that the diameter thereof is different from that of the first guide surface 32, for example, the diameter thereof is smaller than that of the first guide surface 32. Further, a fitting guide 47 similar to the fitting guide 33 is formed at the base end of the lower surface of the tongue portion 25, and is located directly below the fitting guide 33. A stopper 48 is formed at the right end portion of 25 so as to extend vertically. on the other hand,
Reference numeral 49 denotes a pivot support body made of zinc die-casting, which has a substantially oval bulge 49a formed on its upper surface, and a long groove-shaped shaft fitting extending in the front-rear direction from the lower surface to the inside of this bulge 49a. A fitting groove 50 is formed, and this shaft fitting groove 50 has a slightly bent shape, for example, a dogleg shape, and its rear edge is connected to the shaft 26.
It is formed in an arcuate shape that substantially matches the collar 27 of. Further, a notch-shaped guide groove 51 is formed at the rear end of this pivoted support body 49, and a claw-shaped guide receiving portion 52 is formed at the right end.
Further, a rotation guide 53 is formed on the lower surface.
A plastic sliding body 54 is attached to the right side of the rotation guide 53.
The sliding surface 54a has an arc shape centered on the arc center P of the rear end edge of the shaft fitting groove 50, and the diameter of the arc is approximately the same as the diameter of the first guide surface 32. are set the same. Further, a stopper receiver 55 is formed at the tip of the pivoted body 49. The pivoted support body 49 is attached to the right end of the lower surface of the door 15, and the shaft fitting groove 50 is fitted to the shaft 26, and the guide groove 51 is fitted to the guide pin 41. are combined. 56 is the projection 35 of the pivot body 23 and the toggle mechanism 34 described above.
This movable element is attached to a pivoted support body 49. The mover 56 has an arm portion 56a.
is formed at the tip thereof, and a sliding contact body 57 whose lower surface has a substantially V-shape and slides into contact with the upper surface of the protrusion 35 is formed.
is attached. Reference numeral 58 denotes a pivoted body attached to the right end of the upper surface of the door 14, which is vertically symmetrical with the pivoted body 49. Supported body 49
A shaft fitting groove 59, a guide groove 60, a guide receiving portion 61, a rotating guide 62, a sliding body 63, and a stopper receiving portion 58a are provided as in the case of FIG. However, the arc diameter of the sliding member 63 in the rotation guide 62 is set to be approximately the same as the diameter of the second guide surface 46 on the lower surface of the tongue portion 25 of the pivot member 23. In this pivoted support body 58, the shaft 4 is inserted into the shaft fitting groove 59.
0 is fitted into the guide groove 60, and the guide pin 41 is fitted into the guide groove 60. Next, to describe the door pivot device 21, in FIGS. 9 to 11,
64 is a pivot body, which is the door pivot device 20.
The structure is substantially the same as the pivot body 23 in FIG.
That is, the pivot body 64 has a mounting portion 65 and a tongue portion 66.
The pivot body 64 has a mounting portion 65.
It is attached to the lower right end of the opening of the refrigerator compartment 12 of the refrigerator main body 11 via. and tongue piece 66
The upper surface includes the shaft 26 of the pivot body 23, the guide pin 29, the guide surface 32, the fitting guide 33,
Similarly to the protrusion 35, spacer 36, and stopper 48, the shaft 67, guide pin 68, guide surface 69,
A fitting guide 70, a protrusion 71, a spacer 72, and a stopper 73 are provided, but the lower surface of the pivot body 64 does not have anything like the shaft 26 on the lower surface of the pivot body 23. Incidentally, the shaft 67 is provided with a collar 74 and a screw 75 that prevents the collar from coming off.
The guide pin 68 is provided with a collar 76 and a screw 77 that prevents the collar from coming off. On the other hand, 78 is a pivoted body, which has the same configuration as the upper pivoted body 49 in the door pivot device 20,
Therefore, regarding the pivoted body 78, the same parts as those of the pivoted body 49 are given the same reference numerals, and a description thereof will be omitted. This pivoted body 78 is attached to the right end of the lower surface of the door 14, and a movable element 79 similar to the movable element 56 is attached to this pivoted supported body 78, and this movable element 79 is also attached. A sliding member 80 similar to the sliding member 57 is attached. Thus, the mover 79, the protrusion 71, and the toggle mechanism 81 are constructed. The shaft 67 is fitted into the shaft fitting groove 50 of the pivoted body 78, and the guide pin 68 is fitted into the guide groove 51. Next, the door pivot device 22
To describe this, in FIGS. 12 to 14, reference numeral 82 denotes a pivot body, which consists of a mounting portion 83 and a tongue portion 84. On the lower surface of the tongue portion 84, there is a substantially cylindrical support body that is open vertically. A shaft 85 is formed, and a part of the peripheral wall of this shaft 85 is formed with an open portion 85a that is open vertically. Furthermore, this axis 85
A guide pin 86 is formed at the rear part of the
A fitting guide 87 is formed on the lower surface of the tongue portion 84, and an arcuate guide surface 88 is formed at the tip of the tongue portion 84. Reference numeral 89 denotes a lead wire through hole, which is shaped like an elongated hole and communicates with the hollow portion 85b of the shaft 85. 90 is a collar loosely fitted to the shaft 85, 91 is a collar loosely fitted to the guide pin 86, and 92 is a screw that prevents this collar from coming off. Therefore, such a pivot body 8
2 is a mounting portion 8 on the right end of the upper surface of the refrigerator body 11.
It is attached via 3. Reference numeral 93 denotes a pivoted support body, which also has a long shaft-fitting groove 94 extending in the front-rear direction, a notch-shaped guide groove 95, and a rotation guide 96.
and a guide receiving portion 97 are formed. Reference numeral 98 denotes a rotation preventing protrusion, which is protruded in the shape of a tongue from the lower surface of the pivoted body 93. On the other hand, 99 is a substantially cylindrical lead wire insertion bush that is fitted and disposed on the upper part of the door 15, and the upper end side wall of the cylindrical portion 99a is bulged rearward, and the inner space at the upper end is It is said to be long in the front-back direction. Furthermore, a flange 99 is provided at the upper end of the lead wire insertion bush 99.
b is formed, and a fitting recess 100 is formed on the left side of the flange 99b. The pivoted support body 93 has its anti-rotation protrusion 98 inserted into the fitting recess 100 of the lead wire insertion bush 99 on the door 15 side.
It is attached to the upper surface of the door 15 in a state where it is inserted and fitted into the door 15. In this attached state, the elongated internal space 99c at the upper end of the lead wire insertion bush 99 and the shaft fitting groove 94 of the pivoted body 93 are opposed to each other. Further, a shaft 85 is fitted into the shaft fitting groove 94 via a collar 90, and a guide pin 86 is fitted into the guide groove 95. 101 is a cover attached to the pivot body 82. 102 is inside the door 15 and the cover 1
It is a lead wire wired across 01,
The middle part is inside the lead wire insertion bush 99, and the shaft 8
It is inserted into 5.

The case where the door 15 is opened in the above configuration will be described. In FIG. 4, the door 15 is shown in a closed state, and in this state, the shaft fitting groove 50 of the pivoted body 49 is displaced rearward with respect to the shaft 26 of the pivot body 23. Furthermore, the guide groove 51 is fitted into the guide pin 29, and the sliding member 57 of the slider 56 is fitted in the toggle mechanism 34.
is in contact with the rear inclined surface 35b of the protrusion 35. From this state, the handle 19 of the door 15 is pulled and operated. At this time, a rotational force about the shaft 26 acts on the door 15, but since the guide pin 29 is fitted in the guide groove 51, the rotation is prevented by the guide pin 29. Eventually, the pivoted support body 49 is moved forward as shown in FIG. 15, and thus the door 15 is spaced apart from the opening of the freezer compartment 13 of the refrigerator main body 11 in a substantially straight line. Therefore, the seal member 1
7 does not rub against the opening of the freezer compartment 13 of the refrigerator main body 11 at all. When the pivoted support body 49 moves, the left edge of the shaft fitting groove 50 is connected to the collar 27 of the shaft 26.
Also, the right edge 51a of the guide groove 51 comes into sliding contact with the collar 30 of the guide pin 29. Furthermore, in this case, the sliding body 27 of the mover 56 passes over the top of the protrusion 35 and reaches the front inclined surface 35a, and at this time the pivoted body 49 is urged forward. When the rear door 15 is moved forward slightly after passing through the state shown in FIG. 15, the guide pin 29 is moved as shown in FIG.
The fitting between the shaft fitting groove 51 and the guide groove 51 is disengaged, and rotation of the supported body 49 is allowed, and the shaft fitting groove 5
0 is in a state where its rear edge is fitted into the shaft 26. Then, the pivoted support body 49 is rotated about the shaft 26 due to being allowed to rotate. At this time, the rotation guide 53 comes into sliding contact with the first guide surface 32,
The movement of the pivoted body 49 is restricted only in the direction of rotation, and the fitting position of the shaft 26 in the shaft fitting groove 50, that is, the center of rotation of the pivoted body 49, is kept there, and the shaft 26 is To guide the rotation of a pivoted body 49 about the center without rattling. That is, as can be seen from FIG. 17, which shows the state in the middle of rotation, even if an external force as indicated by arrow A is applied to the pivoted support body 49 provided with the door 15, the rotation guide will not move relative to the first guide surface 32. 53 are in contact with each other, the pivoted body 49 does not move in the direction of the external force, but only rotates about the shaft 26 in the opening and closing directions of the door 15. The door 15 is thus rotated, but in this case, the seal member 17 of the door 15 is spaced apart from the opening of the freezer compartment 13 of the refrigerator main body 11, so that the seal member 17 is not rubbed against the opening. There isn't. When the door 15 is further rotated, the stopper receiver 55 comes into contact with the stopper 48, as shown in FIG. 18, and its rotation is stopped.

Next, regarding the case of closing the door 15, when an operating force is applied to the door 15 in the closing direction from the state shown in FIG. The state shown in the figure is reached, and this first
The pivoted body 49 is moved rearward approximately linearly from the state shown in FIG. 9, and the movement of the pivoted body 49 from the state shown in FIG. 19 is as follows. , the guide receiving part 25 is located on the side of the fitting guide 33, and when the pivoted support body 49 receives rotational force from this state, the guide receiving part 52 comes into sliding contact with the fitting guide 33. The pivoted support body 49 is moved substantially backward along the slope of the fitting guide 33, and the guide groove 51 is thereby guided toward the guide pin 29 and is fitted therein. While the left edge portion 51b is in sliding contact with the guide pin 29, the pivoted body 49 moves linearly and reaches the position shown in FIG. 4. In this way, the door 15 is linearly brought into close contact with the opening of the refrigerator compartment 13 of the refrigerator main body 11 after being rotated.
Therefore, in this case as well, the sealing member 17 of the door 15 is never rubbed against the opening. In this case, in the state shown in FIG. 19, the pivoted body 49 is on the flat surface 37 at the front of the spacer 36, and when the pivoted body 49 is slightly moved forward from this state, the pivoted body 49 is The support body 49 slides forward along the slanted surface 38 of the spacer 36 due to the freedom of the door 15, and the door 15 is drawn toward the opening of the freezer compartment 13 of the refrigerator main body 11. Furthermore, in this case, the sliding member 57 of the mover 56 of the toggle mechanism 34 moves down the rear inclined surface 35b over the top of the protrusion 35, which also urges the door 15 in the closing direction. (At this time, the pivoted body 49 slides on the slanted surface 38 of the spacer 36),
Moreover, when the door 15 comes into contact with the opening of the freezer compartment 13 of the refrigerator main body 11, the door 15 is prevented from recoil.

Furthermore, when opening and closing the door 15, the pivoted body 93 of the upper door pivot device 22 basically performs the same function as the pivoted body 49 described above.

Furthermore, when opening and closing the door 14, the pivoted body 78 in the door pivot device 22 is moved to the pivoted body 49.
In addition, the pivoted body 58 of the door pivot device 20 also performs basically the same action as the pivoted body 93, and of course, the rotation guide 62 in the pivoted body 58 is also pivoted. The second rotation guide 46 of the body 23 has the same effect as the rotation guide 53 of the pivoted body 49.

By the way, it is conceivable that the first guide surface 32 and the second guide surface 46 of the pivot body 23 of the door pivot device 20 may have the same diameter and be formed at vertically symmetrical positions, but this is not possible. In this case, there is a risk that the rotation guide 53 slidingly in contact with the first guide surface 32 and the rotation guide 62 slidingly contacting the second guide surface 32 will interfere with each other. and 46 in the vertical direction, or the protrusion length of each rotation guide 53 and 62 must be made small, and in the former case, the vertical dimension of the entire door pivot device 20 becomes large. occurs, and in the latter case, each rotation guide 53 and 62 and each guide surface 32
Since the sliding contact distance with 46 and 46 becomes small, a problem arises in which a reliable rotational guiding action cannot be expected. However, in the case of this embodiment, as can be seen from FIG. 5, the first guide surface 32 and the second guide surface 46 have different diameters and are stepped on the upper and lower surfaces of the pivot body 23 in the door pivot device 20. Since each rotation guide 53 and 62
Therefore, the first guide surface 32 can be made small in width, the second guide surface 46 can be made wide, and both the rotation guides 53 and 62 can be made to have a large protruding length. A sufficient sliding contact amount can be obtained, and a reliable rotational guiding action can therefore be obtained without increasing the thickness of the pivot body 23, that is, without increasing the vertical dimensions of the door pivot device 20. This allows the door pivot device 20 to move along the guide surfaces 32 and 4.
6 and rotation guides 53 and 64, the door 14 and the door 15 are controlled by the door pivot device 20.
and can be pivoted so that the gap between them is small.

In the above embodiment, each pivot body 23, 64 and 8
2, the shafts 26, 67 and 85 and the guide pin 2, respectively.
9, 68 and 86 are provided, and each supported body 49, 5
8, 78 and 93, shaft fitting grooves 50, 59, 50
and 94 and guide grooves 51, 60, 51 and 95, each shaft (symbol omitted, the same applies hereinafter) and each guide pin are provided on each supported body, and the shaft fitting groove and the guide groove are formed on each pivot. It may also be formed on the support.

〔Effect of the invention〕

As is clear from the above description, the present invention allows the door to be rotated once separated from the storage body when the door is opened, and the door can be rotated after being separated from the storage body when the door is closed. After being rotated, the door can be moved substantially linearly to bring it into close contact with the storage body. Therefore, the door can be opened and closed without rubbing the sealing member against the opening of the storage body. It can be easily carried out, and the service life of the sealing member can be extended, and
When the pivoted body rotates, the guide surface and rotation guide can prevent the center of rotation from moving, allowing the door to rotate smoothly without rattling, making it extremely easy to open and close the door. Furthermore, although the structure has two guide surfaces and two rotation guides, the vertical dimensions of the entire door pivot device can be reduced, and the distance between the two upper and lower doors can therefore be reduced. It has excellent effects such as being able to pivot in various directions.

[Brief explanation of drawings]

1 and 2 show a conventional example, with FIG. 1 being a perspective view of the entire refrigerator, and FIG. 2 being an enlarged plan view of the hinge portion. 3 to 19 show one embodiment of the present invention, FIG. 3 is a perspective view of the entire refrigerator, and FIG. 4 is a perspective view of the entire refrigerator.
The figure is an enlarged cross-sectional view of the door pivot device in the middle, FIG. 5 is a side view of the door pivot device, FIG. 6 is an exploded perspective view of the door pivot device, and FIG. 7 is an exploded perspective view of the door pivot device. FIG. 8 is a perspective view of the spacer, FIG. 9 is an enlarged cross-sectional view of the lower door pivot device, and FIG. 10 is an exploded view of the door pivot device. Perspective view, 1st
Fig. 1 is a perspective view of the pivot body of the door pivot device viewed from below, Fig. 12 is an enlarged cross-sectional view of the upper door pivot device, and Fig. 13 is a vertical sectional side view of the door pivot device. 1st
FIG. 4 is an exploded perspective view of the door pivot device, and FIGS. 15 to 19 are enlarged cross-sectional views of the intermediate door pivot device for explaining the operation. In the figure, 11 is the refrigerator body, 14 and 15 are the doors,
16 and 17 are seal members, 20, 21 and 22
is a door pivot device, 23 is a pivot body, 26 is a shaft, 29 is a guide pin, 32 is a first guide surface, 40 is a shaft,
41 is a guide pin, 46 is a second guide surface, 49
50 is a shaft fitting groove, 51 is a guide groove,
53 is a rotation guide, 58 is a pivoted support body, 59 is a shaft fitting groove, 60 is a guide groove, and 62 is a rotation guide.

Claims (1)

[Claims] 1. Two upper and lower doors each having a frame-shaped sealing member disposed on the inner peripheral edge thereof are pivotally supported in an opening in the storage main body so as to be openable and closable, and a pivot body attached to the storage main body and the door are connected to each other. A shaft and a guide pin are formed on one side of the two pivoted supported bodies to be attached, and the other side has a long groove shape extending in the front-rear direction and is fitted with the shaft to move it forward when each door is opened. A shaft fitting groove is formed to move each of the pivoted bodies forward in order to move each of the pivoted bodies forward, and the shaft fitting groove is formed in a notch shape and fits with the guide pin, so that when each of the pivoted bodies moves, each of the pivoted bodies is moved forward. A first guide surface formed in an arc shape on the upper and lower surfaces of the pivot support body, which prevents rotation of the support body and forms a guide groove that disengages from the guide pin after movement and allows the rotation, and The second guide surface is formed into a stepped shape with different diameters, and the second guide surface is in sliding contact with the first guide surface on the one pivot body, and the shaft is aligned with the shaft fitting groove after the one pivot support body is moved. A rotation guide is formed to guide the rotation of the pivoted body around the axis by keeping the mating position there, and slides into contact with the second guide surface of the other pivoted body. It is characterized by forming a rotation guide for guiding the rotation of the pivoted body about the shaft by keeping the fitting position of the shaft in the shaft fitting groove there after the pivoted body has moved. A storage door pivot device.