JPS6215421Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention is a pivot structure for a door body that can be used for refrigerators and furniture, especially a pivot structure that allows a single door body to be opened to either the left or right side. It is related to.

(Prior Art and its Problems) Basically, two types of structures are known as a hinge structure for a door body that allows a single door body to be opened to either the left or right side. The first one is, for example,
Like the double door described in Publication No. 55-29659, horizontal door support links are interposed between the upper and lower ends of the door body and the door pivot body, and these links are connected to the same side ends. The second type is a structure in which the door body is pivotally connected to the main body via a vertical support shaft, and the free ends of both links and the door body are pivotally connected to the door body through the vertical support shaft. For example, Japanese Patent Application Laid-open No. 1983-
Like the opening/closing device for a hinged door described in Publication No. 146439, it has a structure in which vertical support shafts are provided on both left and right sides of the door body so that they can be freely inserted into and removed from bearings on the door body pivoting body side.

In the first method, compared to the second method, the door body is completely connected to the door pivot body through the upper and lower door support links, so that the door body is not easily connected to the door pivot body. There is an advantage that play is less likely to occur, and since the bearing that is the center of rotation of the door body is fixed even when the door body opens to the left or right, the door body can be opened and closed smoothly.

However, in the conventional door pivot structure of this type, as described in the above-mentioned known example, among the left and right sides of the door, the side that is not pivoted to the door support link and the link are engaged by a so-called click stopper, and when an opening operation force is applied that overcomes the locking force of the click stopper, the door body is configured to open around a pivot point with the link. was. Therefore, there was a drawback that the door opening operation could not be easily performed. Additionally, the door body may open unexpectedly due to deterioration of the click stopper spring. Furthermore, the means for locking the free end side of the door support link to the door pivoting body when viewed from the door pivoting body side also uses a rotating shaft having a flat part for locking on the head. Because of the heat, not only is there an inconvenience that the opening through which the locking flat part enters and exits is formed on the front surface of the door pivot body, which is important in terms of external design, but also the link of the door pivot body is inconveniently formed. There is also the drawback that the strength of the locking portion is weakened.

(Means and effects for solving the problems) In order to solve the problems of the first door body pivot structure as described above, the present invention aims to improve the vertical movement of the second door body pivot structure. We propose a door pivot structure that utilizes a vertical support shaft as a locking means, and its feature is that horizontal gate support links are provided between the upper and lower ends of the door body and the door pivot body. Both links are pivotally connected to the door body pivoting body at the same end thereof via cylindrical vertical support shafts 9a, 9b, and the free ends of both links and the door body are The door body has a pair of vertical vertical shafts 15, which are pivotally connected by cylindrical vertical support shafts 10a and 10b, and which are fitted into the cylindrical vertical support shafts 9a and 9b by the biasing force of a spring.
a, 15b, and the cylindrical vertical support shafts 10a, 10b.
A pair of upper and lower vertically movable vertical shafts are fitted by the biasing force of a spring into a pair of upper and lower bearings 24 provided on the door body pivoting body at a position opposite to Shafts 21a and 21b are provided, and the vertical movement vertical shaft 15 is further provided on the door body.
a, 15b from the cylindrical vertical support shafts 9a, 9b against the biasing force of a spring, and an operating means for disengaging the vertically moving vertical shafts 21a, 21b from the bearing 24 against the biasing force of the spring. The main point is that the operating means for controlling the operation are arranged separately on the left and right sides.

According to the configuration of the present invention, the left and right sides of the door body in the closed position are aligned with the vertical movement axis 15a,
15b and the cylindrical vertical support shafts 9a, 9b, and the vertical movement vertical shafts 21a, 21b and the bearings 24, the door body is completely locked to the door pivot body together with the upper and lower door support links. When opening this door body, the vertical movement shafts 15a, 15b (or 21a, 21b) on the same side are moved by the operating means on the side to be opened against the urging force of the spring, and the cylindrical vertical support shaft 9a,
9b (or bearing 24), and then just pull the door toward you.

At this time, when the side with the vertical movement shafts 21a, 21b is the center of rotation of the door body, both ends of the door body support link are connected to the vertical movement shafts 21a, 21b and the bearing 2.
4 and the cylindrical vertical support links 9a and 9b, the door body is completely locked to the door body pivoting body by fitting with the cylindrical vertical support link 1.
It rotates around 0a and 10b. In addition, when the side with the vertical movement shafts 15a, 15b is the center of rotation of the door body, both ends of the door body support link are connected to the vertical movement vertical shafts 15a, 15b and the cylindrical vertical support shafts 9a, 9b. and cylindrical vertical support shafts 10a, 10b. Rotates around.

(Example) An example of the present invention will be described below based on the attached illustrative drawings. In FIGS. 1 and 2, 1 is a door body, and 2a and 2b are upper and lower parts of the door body pivoting body. Reference numerals 3 and 4 designate handles that are pivotally mounted near both right and left sides of the front surface of the door body 1 on rotating shafts 5 and 6 so as to be able to swing up and down. 7 and 8 are a pair of upper and lower door support links, and 9a and 9b are cylindrical vertical support shafts that pivotally connect one end of the links 7 and 8 to the upper body 2a and the lower body 2b, and are concentric with each other. To position. 10
Numerals a and 10b are cylindrical vertical support shafts that pivotally connect the other ends of the links 7 and 8 to the upper and lower ends of one of the left and right sides of the door body 1, and are located concentrically with each other. Therefore, the door body 1 is supported by the main body upper part 2a and the main body lower part 2 via the links 7 and 8, and can be horizontally rotated about the cylindrical vertical support shafts 10a and 10b on one side with respect to the links 7 and 8. It is also possible to rotate horizontally about the cylindrical vertical support shafts 9a and 9b on the other side together with the links 7 and 8.

In FIG. 3, 11a and 11b are first locking means, and 12a and 12b are second locking means. The first locking means 11a, 11b lock the door body 1.
A pair of vertical moving vertical shafts 15a, 1, which are vertically movable up and down, are supported in a vertically movable manner by fixed guides 13, 14 provided in the
5b, and a compression coil spring 17 interposed between the fixed guide 14 and a flange 16 fixed to the vertical vertical shafts 15a, 15b. It protrudes vertically from the door body 1 under force and is fitted into the shaft holes 18 of the cylindrical vertical support shafts 9a and 9b. The second locking means 12a, 12b includes a cylindrical vertical support shaft 10.
Vertical shafts 21a and 21b are vertically movable and vertically movable shafts 21a and 21b are vertically movable and vertically movable shafts 21a and 21b are supported by shaft holes 19 of a and 10b and fixed guides 20 provided in the door body 1 so as to be freely movable up and down.
Flange 22 fixed to a, 21b and fixed guide 2
compression coil spring 23 interposed between
The vertical movement shafts 21a, 21b are vertically protruded from the links 7, 8 by the biasing force of the spring 23, and are fitted into shaft holes 25 of bearings 24 embedded in the upper part 2a and lower part 2b of the main body, respectively. ing.

Reference numerals 26a and 27a are L-shaped levers whose bent portions are pivotally connected to the door body 1 with shafts 28, and their lateral ends 29 are pins protruding near the lower ends of the vertical movement shafts 15a and 21a. It is in contact with 30. 31
are stoppers for the L-shaped levers 26a, 27a. Reference numerals 26b and 27b are L-shaped levers whose bent portions are fixed to rotating shafts 5 and 6 to which handles 3 and 4 are fixed, and whose lateral ends 32 protrude near the upper ends of the vertical movement shafts 15b and 21b. installed pin 3
3, and the lateral end 32 is biased in a direction away from the pin 33 by a tension coil spring 34. This L-shaped lever 26b, 27
An elongated hole 35 is provided at the upward end of b, and a pin 36 protruding from the downward end of the L-shaped levers 26a, 27a positioned above is loosely fitted into the elongated hole 35.

According to the above configuration, when the door body 1 is in the closed position, the vertical movement shafts 15a, 15b fit into the shaft holes 18 of the cylindrical vertical support shafts 15a, 15b, and the vertical movement shafts 21a, 21b passes through the shaft hole 20 of the cylindrical vertical support shafts 10a, 10b and is fitted into the shaft hole 25 of the bearing 24. Therefore, the door body support links 7 and 8 are prevented from rotating around the cylindrical vertical support shafts 9a and 9b by the vertical movement shafts 21a and 21b, and the door body 1 is prevented from rotating around the cylindrical vertical support shafts 9a and 9b. On the other hand, since rotation about the cylindrical vertical support shafts 10a and 10b is prevented by the vertical movement shafts 15a and 15b, the door body 1 is not able to open to either the left or right side. 2a and the lower part 2b of the main body.

When opening the door body 1 to the left, rotate the right handle 4 downward as shown in the right half of Figure 3.
By rotating the L-shaped levers 27a, 27b in a direction in which the horizontal ends 29, 32 approach each other against the biasing force of the spring 34, the horizontal ends 29, 32 are moved to the right side via the pins 30, 33. The vertical movement shafts 21a and 21b are connected by springs 23.
, the vertical movement shafts 21a and 21b are pulled out from the shaft holes 25 of the bearings 25 in the upper part 2a and the lower part 2b of the main body. Therefore, by pulling the door body 1 toward you via the handle 4 that is still rotated downward, the door body support link 7 connected to the door body 1 by the vertical movement vertical shafts 15a and 15b on the left side up and down. , 8, the door body 1 can be opened to the left around the cylindrical vertical support shafts 9a, 9b.

When opening the door body 1 to the right, the handle 3 is rotated downward, and the L-shaped levers 26a, 26b are moved against the biasing force of the spring 34 to move the horizontal ends 29, 3.
2 to approach each other, the horizontal ends 29, 32 are rotated toward the pins 30, 33.
vertical movement vertical shafts 15a, 15b on the left side
is pulled inward against the biasing force of the spring 17, so that both vertically moving vertical shafts 15a, 15b are pulled out from the shaft holes 18 of the cylindrical vertical support shafts 9a, 9b. Therefore, by pulling the door body 1 toward you via the handle 3 that is still rotated downward, it is connected to the upper and lower parts 2a and 2b of the main body by the vertical movement shafts 21a and 21b on the right side and the bearings 24. The cylindrical vertical support shafts 10a, 10 between the door support links 7, 8
It can be opened to the right centering on b.

When closing the open door body 1, the handle 3 or 4
When you release your hand, the spring 34 causes the L-shaped lever 26a, 26b or 27a, 27b to rotate back to its original position where it contacts the stopper 31, and at the same time, the vertical movement shaft 15a, 15b or 21a, 21
b is automatically returned to the extended position by the spring 17 or 23. In order to be able to close and automatically lock the door body 1 even in this state, as shown in FIGS.
b and the front side of the bearing 24 having the shaft hole 25,
The vertical movement vertical shafts 15a, 15b or 21a, 21b, which are in the extension limit position, are moved back and forth against the biasing force of the spring 17 or 23 as the door body 1 closes, and are inserted into the corresponding shaft hole 18 or 25. It is desirable to form inclined guide surfaces 37 and 38 that guide the user.

In addition, as shown in Fig. 3 and Fig. 5, both left and right L
Between the downward ends of the L-shaped levers 26a, 27a, there is a slide rod 40 of a length sufficient to prevent both of these L-shaped levers 26a, 27a from simultaneously rotating in the direction of pulling down the vertical movement shafts 15a, 21a.
can be arranged so as to be movable laterally via the support member 39, and configured so that both the left and right handles 3 and 4 cannot be operated to open the door at the same time. Further, as shown in FIG. 4, the door body 1 can have a cover plate portion 41 on the front plate for hiding the door body support links 7, 8.

(Effects of the invention) As described above, according to the door body pivot structure of the invention,
The door body, which can be opened to either the left or right side, is always supported on the door pivot body side via a pair of upper and lower door support links, so the door body may wobble against the door pivot body. In addition to being able to firmly support the door body without any problems, even when the door body opens to the left or right, the door body is centered around a fixedly installed bearing, that is, a cylindrical vertical support shaft. Since it rotates, the door body can be opened and closed smoothly. Moreover, even when the door body opens to the left or right, the bearing part that is the center of rotation of the door body is completely locked to the door body pivoting body side by the vertical axis of vertical movement, so the center of the opening movement of the door body Inconveniences such as the side bearings coming off unexpectedly do not occur, and the door body in the closed position can be completely locked by the vertical movement shafts on both the left and right sides, so it can be used safely.

In addition, when the door body is pulled forward, no force is applied that forces the vertical axis of vertical movement against the spring, so the biasing force of the spring is weakened so that the door opening operation can be performed lightly and easily. Even so, the door lock can be ensured. Furthermore, since the door body is locked and unlocked by raising and lowering the vertically moving vertical shaft, the shaft hole into which the vertically moving vertical shaft fits may be vertically oriented, and should be opened at the front of the door body pivoting body. There is no need to make holes for
It is possible to increase the locking strength and is convenient for designing the external appearance.

[Brief explanation of the drawing]

Figure 1 is a plan view showing the door body, Figure 2 is a front view of the same, Figure 3 is a longitudinal front view, Figures 4A and B are longitudinal side views with partial cutouts, and Figure 5 is a cross-sectional plan view. be. DESCRIPTION OF SYMBOLS 1... Door body, 2a, 2b... Upper and lower parts of the door body pivoting body, 3, 4... Handle, 7, 8... Door body support link, 9a to 10b... Cylindrical vertical support shaft, 11a
~12b... Locking means, 13, 14, 20...
Fixed guides, 15a, 15b, 21a, 21b...
...Upper and lower vertical shafts, 17, 23... Compression coil springs, 18, 19, 25... Shaft holes, 24... Bearings, 26a-27b... L-shaped levers.

Claims (1)

[Scope of utility model registration request] Horizontal door supporting links are interposed between the upper and lower ends of the door body and the door pivoting body, and these links have a cylindrical vertical support shaft connected to the door pivoting body at the same end. Pivotally connected via 9a and 9b,
The free ends of both links and the door body are connected to a cylindrical vertical support shaft 1.
0a and 10b, and the door body has a pair of vertical movement vertical shafts 15a and 15, which are fitted into the cylindrical vertical support shafts 9a and 9b with the urging force of a spring.
b, and the cylindrical vertical support shaft 10a is fitted into a pair of upper and lower bearings 24 provided on the door pivot body at a position opposite to the cylindrical vertical support shafts 10a and 10b by the biasing force of a spring. , 10b, a pair of vertical movement vertical shafts 21a, 21b are provided,
Further, the vertical movement shafts 15a, 15 are attached to the door body.
cylindrical vertical support shaft 9 against the biasing force of the spring.
a, 9b, and an operating means for disengaging the vertically moving vertical shafts 21a, 21b from the bearings 24 against the biasing force of a spring, which are separately arranged on the left and right sides of the door body. Pivot structure.