JPS6216632Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention provides a storage door pivoting device in which a door having a frame-shaped sealing member arranged on the inner periphery is pivoted to an opening in a storage main body so as to be openable and closable. 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 the refrigerator main body 3, which is a storage main body, via hinge pins 4 so as to be openable and closable, and seal 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 service life.Furthermore, cold air leaks, increasing power consumption, etc. There were some shortcomings. The same can be said of the door 2 for the freezer compartment.

[Purpose of invention]

The present invention has been made in consideration of the above circumstances, and its object is to provide a door pivot device for a storage cabinet which prevents the sealing member from rubbing against the edge of the opening of the storage cabinet body when the door is opened or closed, and which allows the door to be opened and closed smoothly and accurately.

[Summary of the idea]

In the present invention, a shaft and a guide pin are formed on one of the pivot body attached to the storage body and the pivoted body attached to the door, and the other has a long groove shape extending in the front-rear direction and engages with the shaft. A shaft fitting groove is formed to move the pivoted body forward when the door is opened, and a shaft fitting groove is formed in a notch shape to fit with the guide pin when the pivoted body is moved. A guide groove is formed that prevents the pivoted body from rotating about the axis and, after the movement, disengages from the guide pin and allows the rotation, so that when the door is opened, the door can be opened. Further, an arcuate guide surface is formed on one of the pivot body and the pivoted body, and the other side is in sliding contact with the guide surface to form a shaft fitting groove after the pivoted body is moved. A rotation guide is formed to hold the fitting position of the shaft at that position and guide the rotation of the supported body around the shaft, so that when the door moves forward, the door can be smoothly rotated. Furthermore, the shaft fitting groove is formed in a substantially dogleg shape with a bent part in the middle, so that the door can be opened and closed accurately.

[Example of idea]

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 6, reference numeral 23 denotes a pivot body, which consists 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. Reference numeral 32 denotes a guide surface formed at the tip of the tongue portion 25, which has an arc shape centered on the shaft 26. Furthermore, the tongue piece part 2
The guide pin 29 is located on the right side of the base end of the upper surface of 5.
An oblique fitting guide 33 is formed on the right side of the housing. Further, on the left side of the upper base end of the tongue piece 25, there is a protrusion 3 that forms a part of the toggle mechanism 34.
5 is formed, and this protrusion 35 has a shape having an apex at the middle part in the front-rear direction and slopes 35a and 35b at the front and rear parts thereof. 3
6 is a plastic spacer, which is attached to the shaft 26.
As shown in FIG.
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 succession to the slanted surface 38. In this slanted surface 38, the right half 38a is formed to be slightly shifted forward with respect to the left half 38b, so that the starting point of descent of the right half 38a is ahead of that of the left half 38b. 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 provided on 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.
is provided protrudingly, and the shaft 26 is provided on the shaft 40.
Similarly, the collar 42 and the screw 4 that prevents it from coming off.
Similarly to the guide pin 29, the guide pin 41 is provided with a collar 44 and a screw 45 for preventing the collar from coming off. Furthermore, an arc-shaped guide surface 46 centered on the shaft 40 is formed at the lower end of the tongue portion 25, and this guide surface 46 is set to have a smaller diameter than the 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 set to be approximately the same as the diameter of the guide surface 32. has been done. 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 16, and the guide groove 51 is fitted to the guide pin 41. are combined. Reference numeral 56 designates a mover which together with the protrusion 35 of the pivot body 23 constitutes the above-mentioned toggle mechanism 34, and is attached to the pivoted body 49. An arm portion 56a is formed on the mover 56, and a sliding contact body 57 whose lower surface has a substantially V-shape and slides into sliding contact with the upper surface of the protrusion 35 is attached to the tip of the arm portion 56a. 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. A shaft fitting groove 59, a guide groove 60, a guide receiving part 61, a rotating guide 62, a sliding body 63, and a stopper receiving part 58a are provided as in the case of the pivoted body 49. However, the arc diameter of the sliding body 63 in the rotation guide 62 is the same as that of the pivot body 23.
The diameter is set to be approximately the same as the diameter of the guide surface 46 on the lower surface of the tongue portion 25. Therefore, this supported body 58
, the shaft 40 is fitted into the shaft fitting groove 59, and the guide pin 41 is fitted into the guide groove 60. Next, referring to the door pivot device 21, in FIGS. 8 to 10, reference numeral 64 denotes a pivot body, which is constructed in substantially the same manner as the pivot body 23 in the door pivot device 20. That is, the pivot body 64 has a configuration including an attachment portion 65 and a tongue portion 66, and the pivot body 64 is attached to the lower right end of the opening of the refrigerator compartment 12 of the refrigerator main body 11 via the attachment portion 65. ing. The upper surface of the tongue portion 66 includes the shaft 26 of the pivot body 23, the guide pin 29, the guide surface 32, the fitting guide 33, and the protrusion 3.
5. Similarly to the spacer 36 and stopper 48, respectively,
Shaft 67, guide pin 68, guide surface 69, fitting guide 70, protrusion 71, spacer 72, stopper 7
However, 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. The shaft 67 is provided with a collar 74 and a screw 75 for preventing it from coming off, and the guide pin 68 is provided with a collar 76 and a screw 77 for preventing it 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. The same parts are given the same reference numerals and the explanation 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. Therefore, this moving element 7
9 and the protrusion 71 constitute a toggle mechanism 81. 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, to describe the door pivot device 22, in FIGS. 11 to 13, 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, A substantially cylindrical shaft 85 that is open vertically 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 bushing 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. or,
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 a lead wire that is wired between the inside of the door 15 and the inside of the cover 101, and the middle part is inside the lead wire insertion bush 99,
A shaft 85 is passed through it. Therefore, this lead wire 10
2, as shown in FIG. 14, the lead wire 102 is led out from the lead wire insertion bush 99 with the collar 90 for the shaft 85 fitted on the lead wire 102, and then the lead wire 102 is led out from the lead wire insertion bush 99. Pass the connector 103 provided at the tip of the connector 102 through the lead wire passage hole 89 of the pivot body 82, then insert the lead wire 102 into the shaft 85 through the opening 85a as shown by the two-dot chain line in the same figure, and then insert the connector 103 at the tip of the collar 90. is fitted onto the outer peripheral surface of the shaft 85 and the lead wire 1
02 from coming off from the open portion 85a of the shaft 85.

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
No. 7 does not rub against the opening of the freezer compartment 13 of the refrigerator main body 11. 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 57 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 guide surface 32 and restricts the movement of the pivoted body 49 only in the rotational direction, thereby adjusting the fitting position of the shaft 26 into the shaft fitting groove 50, that is, the pivoted body 49. 49 is fixed there, and the shaft 26
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 body 49 provided on the door 15, the rotation guide 53 does not come into contact with the guide surface 32. Therefore, 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 sealing member 17 of the door 15
Since it is spaced apart from the opening of the freezer compartment 13 of the refrigerator main body 11, the sealing member 17 is not rubbed against the opening. Here, since the shape of the shaft fitting groove 50 of the pivoted body 19 is approximately bent in the middle, the movement of the pivoted body 49 from linear movement to rotation. is performed accurately and smoothly, and the door 15 is also opened smoothly without rattling. This is door 15
This also applies when the area is occluded. 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 52 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. With the left edge 51b facing the guide pin 29, the pivoted support 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 function as the pivoted body 93.

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. Further, in the above embodiment, the guide surface is formed on the pivot body and the rotation guide is formed on the pivot support body, but the guide surface is formed on the pivot support body, and the rotation guide is formed on the pivot body. may be formed.

[Effect of idea]

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 prevent the center of rotation from moving, allowing the door to rotate smoothly without rattling. Since the shape is bent in the middle, the pivoted body can move accurately and smoothly from linear movement to rotation, making it easy to open and close the door. It has excellent effects.

[Brief explanation of the drawing]

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 an 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 part, FIG. 5 is an exploded perspective view of the door pivot device, and FIG. 6 is a perspective view of the pivot body of the door pivot device viewed from below. , FIG. 7 is a perspective view of the spacer, FIG. 8 is an enlarged cross-sectional view of the lower door pivot device, FIG. 9 is an exploded perspective view of the door pivot device, and FIG. 10 is an exploded perspective view of the door pivot device. A perspective view of the pivot seen from below, Figure 11 is an enlarged cross-sectional view of the upper door pivot, Figure 12 is a vertical side view of the door, and Figure 13 is the door pivot. Exploded perspective view of 1st
FIG. 4 is an exploded perspective view for explaining the lead wire wiring in 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 guide surface, 40 is a shaft, 41 is a guide pin, 46 is a guide surface, 49 is a pivoted body,
50 is a shaft fitting groove, 51 is a guide groove, 53 is a rotation guide, 56 is a slider, 58 is a pivoted body, 59 is a shaft fitting groove, 60 is a guide groove, 62 is a rotation guide, 6
4 is a pivot, 67 is a shaft, 68 is a guide pin, 69
is a guide surface, 71 is a protrusion, 78 is a pivoted body, 82
85 is a pivot body, 85 is a shaft, 86 is a guide pin, 88 is a guide surface, 93 is a pivoted body, 94 is a shaft fitting groove, 9
5 is a guide groove, and 96 is a rotation guide.

Claims (1)

[Scope of utility model registration request] A door having a frame-shaped sealing member disposed on the inner peripheral edge thereof is pivoted to an opening in a storage main body so as to be openable and closable; A shaft and a guide pin are formed on one side, and a long groove shape extending in the front-rear direction is formed on the other side, and the pivoted body is moved forward so as to fit with the shaft and move it forward when the door is opened. In addition, a shaft fitting groove is formed in a notch shape and is fitted with the guide pin to prevent rotation of the pivoted body about the shaft when the pivoted body is moved. A guide groove is formed that allows the rotation when the pin is disengaged, an arcuate guide surface is formed on one of the pivot body and the pivoted body, and the other is in sliding contact with the guide surface. A rotation guide is formed that holds the fitting position of the shaft in the shaft fitting groove there after the pivot body has moved and guides the rotation of the pivoted body about the shaft, and A storage door pivot device characterized in that the groove has a substantially doglegged shape that bends from the middle.