JP3072499B2 - Overhead door - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door of a door mounting body such as a cabinet, which is closed in a hanging state, and is opened upward from this state. The present invention relates to an overhead door which is stored on a plate so as to be able to hold the open state.

[0002]

2. Description of the Related Art Conventionally, in an overhead door,
As shown in FIG. 9, when the door a is inside the door mounting body b,
There is known one that is stored in the lower back side of the top plate c (Japanese Utility Model Publication No. 60-18528).

However, in the above-mentioned overhead door, a supporting rod d and a short rod e for opening and closing the door a by turning the door a in the vertical direction are attached to the door a and the door mounting body b. Not only stretch the spring f
Since the slide mechanism by the slide rail g and the door wheel h is internally provided, it is difficult to perform the mounting operation of the door a and the position adjustment operation of the door a after the door is mounted, or the door a is located inside the door mounting body b. Since it is stored, there is also a disadvantage that the storage space inside the door mounting body b is narrowed.

Further, in the opened state of the door a, not only the supporting rod d but also the spring f extends and exposes from the door mounting body b to the outside, so that the appearance is poor and the spring f and the spring f and the spring f are not opened and closed. There is also a risk that a fingertip or the like may be erroneously pinched between the support rod d and the like.

In order to solve the above-mentioned problem of the overhead door, the present applicant has designed an overhead door as shown in FIG. In this case, the support arm k is rotatably mounted on the inner surface of the door mounting body i with or without a damper j, and its tip is pinned near the lower end of the rear surface of the door m. n so that the door m can be opened and closed in the vertical direction by pivoting and sliding, and can be stored on the top plate p of the door mounting body i. The hinge r is pivotally attached to the front edge of the top plate p via a hinge r, and a concave groove s is formed in the back surface of the door m so as to be vertically long, and a tension spring t is placed in the concave groove s. The end is the upper end of the hinge r and the groove s
The outer rail v and the door m are urged upward with respect to the inner rail u of the slide rail q by the tension spring t. Things.

[0006]

However, even with the above-described overhead door, the following problems can still be pointed out. That is, when the door m is closed by turning the door m downward from the open state of the door m,
The extension spring t is extended to a length that is almost four times as long as the length of the contraction when the door is closed, and the time during which the door m is opened is one day. , About 8 hours, while the time during which the door m is closed is generally 16 hours, the time during which the tension spring t is extended becomes longer, and as a result, The life of the tension spring t will be shortened.

The present invention has been made in view of the above-mentioned problems of the prior art. In the present invention, not only the slide rail is adopted as in the conventional example of FIG. The base end of the stay is rotatably mounted, the tip of the stay is pivotally attached to the vicinity of the lower end of the back of the door, and a tension spring for the stay is stretched between a substantially middle portion of the stay and an appropriate position on the inner surface of the side plate. The extension of the stay tension spring by changing the door from the door open state to the door closed state is reduced to about twice or less, and the durability of the stay tension spring is improved. In addition to assuring, the door opened by the upward rotation can be stored on the top plate of the door mounting body as it is, so that the door and its attachment mechanism do not hinder the taking in and out of the storage object. So that Luo, spring tension stay is that you do not extend from the opening of the door mounting body, to the order not to sandwich the fingertip or the like, is its purpose.

According to a second aspect of the present invention, in addition to the configuration of the first aspect, not only the above-mentioned tension spring for the stay but also
As in the conventional example, the door tension spring is provided in the groove on the back surface of the door so as not to separate from the door when the door is opened and closed. Of course, it is possible not to pinch a fingertip or the like, and by means of the two tension springs, the closing operation of the door can be performed slowly, and the opening operation can be easily performed by a light force, By sharing the load with both the door extension spring and the stay extension spring, the durability of each is also improved.

According to a third aspect of the present invention, there is provided the mechanism according to the first aspect, wherein the both ends of the stay are provided between the inner surface of the side plate and the door simply in a door mounting body such as a cabinet.
Instead of pivoting each, one end of the stay is pivotally attached to the inner surface of the side plate of the door mounting body via the damper, thereby opening the door and storing it on the top plate of the door mounting body. When the door is to be closed from the above state to the closed state, the resistance of the damper, that is, the buffering action for the door load torque is superimposed on the buffering action of the stay tension spring to close the door. The formation operation can be performed more slowly without impact.

According to the fourth aspect, as in the third aspect, not only the door closing operation can be performed smoothly and gently by using the braking force of the damper, but also the above-mentioned aspect is provided. By providing the stay extension spring and the door extension spring in place as described in 2 above, the closing movement of the door at the time of closing the door can be performed more smoothly and gently. With the restoring force accumulated by the extension, the door opening operation can be performed lightly.

According to a fifth aspect of the present invention, in the configuration of the third aspect, by appropriately attaching a coil spring to the damper, the coil spring can be used when the door is closed. In addition to the damping force of the damper, the braking force of the coil spring is also added, so that the closing movement of the door can be performed more gently. The door opening operation can be performed more lightly by effectively utilizing the stored regenerative power.

According to a sixth aspect of the present invention, in addition to the configuration according to the fifth aspect, a tension spring for the door is further added as in the fourth aspect, so that when the door is closed, a control by a damper is provided. When not only power but also the braking force based on the above coil spring is exerted to make the door perform a sufficiently slow closing movement, and when the door is to be opened,
The opening operation is performed by utilizing the restoring force of the stay extension spring, the door extension spring, and the coil spring.
It can be implemented with less power.

[0013]

According to the present invention, in order to achieve the above object, a base end of a stay is rotatably supported by a rotating shaft on an inner surface of a side plate of a door mounting body such as a cabinet. The front rail is pivotally attached to the vicinity of the lower end of the back of the door, while the outer rail of the slide is formed by slidingly engaging a long outer rail and a short inner rail on the back of the door. The upper side of the inner rail is attached to the door mounting body so that the door can be opened and closed in the vertical direction by rotating and sliding, and can be placed on the top plate of the door mounting body. A hinge is pivotally attached to the front edge of the top plate by a hinge, and a tension spring for a stay is stretched between an upper portion on the inner surface of the side plate of the door mounting body and forward of the base end of the stay and a substantially intermediate portion of the stay. And tension for the stay Roots, the respect to the inner rail, it is intended to provide an overhead door which is characterized in that so as to urge upward the outer rail and the door.

According to a second aspect of the present invention, in addition to the configuration of the first aspect, a concave groove is provided on the back surface of the door so as to be vertically long, and a tension spring for the door is provided in the concave groove. The respective ends are respectively hung and stretched over the upper end of the hinge and the lower end of the concave groove, and the outer rail and the door are moved downward relative to the inner rail by the door tension spring. The content is that it is controlled and the upward movement is energized.

In the case of the third aspect, the rotation shaft of the damper is fixed to the inner surface of the side plate of the door mounting body such as a cabinet, the base end of the stay is fixed to the main body of the damper, and the tip is the lower end of the back surface of the door. Part, on the other hand, on the back side of the door, the outer rail of a slide rail, which is formed by slidably engaging a long outer rail and a short inner rail, is provided side by side in the vertical direction, The upper end of the inner rail is hinged to the front edge of the top plate of the door mount so that the door can be opened and closed in the vertical direction by pivoting and sliding, and can be placed on the top plate of the door mount. At the same time, on the inner side plate of the door mounting body, a stay tension spring is stretched between an upper front part of the damper and a substantially middle part of the stay, and by the stay tension spring, The Inn Against Reru seeks to provide an overhead door which is characterized in that so as to urge upward the outer rail and the door.

According to a fourth aspect of the present invention, in addition to the configuration of the third aspect, a concave groove is formed in the back surface of the door so as to be long in the vertical direction.
In the groove, a door tension spring is provided, and each end of the door tension spring is attached to an upper end of the hinge and a lower end of the groove, respectively. The door tension spring is attached to the inner rail by the door tension spring. On the other hand, the lower movement of the outer rail and the door is controlled, and the upper movement is biased.

According to the fifth aspect, the rotating shaft of the damper is fixed to the inner surface of the side plate of the door mounting body such as a cabinet,
The base end of the stay is fixed to the main body of the damper, and the tip is pivotally mounted near the lower end of the back of the door, while a long outer rail and a short inner rail are slidable on the back of the door. The outer rail of the slide rail that is engaged with the outer rail is vertically long, and the door can be opened and closed in the vertical direction by rotating and sliding, and is placed on the top plate of the door mounting body. The upper end of the inner rail is hinged to the front edge of the top plate of the door mounting body by a hinge so that the upper end of the inner rail is located on the inner surface of the side plate of the door mounting body. A stay tension spring is stretched between the outer rail and the door by the stay tension spring, and the outer rail and the door are urged upward with respect to the inner rail. To By rotating in the direction of closing the door, the ends are mounted on the rotating shaft side and the main body side of the damper, respectively, so that the ends can be screwed in the winding direction. An overhead door, wherein the outer rail and the door are biased upward.

According to the sixth aspect, in addition to the fifth aspect, a concave groove is provided on the back surface of the door so as to be long in the vertical direction,
In the groove, a door tension spring is provided, and each end of the door tension spring is attached to an upper end of the hinge and a lower end of the groove, respectively. The door tension spring is attached to the inner rail by the door tension spring. On the other hand, the lower movement of the outer rail and the door is controlled, the upper movement is urged, and the coil spring can be freely screwed in the winding direction of the damper by rotating the coil spring in the door closing direction. As described above, the ends are respectively mounted on the rotating shaft side and the main body side of the damper, and the outer rail and the door are urged upward with respect to the inner rail by the restoring force of the coil spring. The content is what we did.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In describing the present invention in detail, FIGS. 1 and 2 are for explaining claims 1 and 3, and FIG. 3 is for explaining claims 5 and 6. 4 and 5 and FIG. 6 are used to explain all claims, and FIG.
And claim 4 and claim 6, and in the illustrated example, a door mounting body 1 such as a cabinet is provided.
Is formed in a box shape having an opening 6 on the front surface by a top plate 2, a bottom plate 3, left and right side plates 4, 4 and a back plate 5.
On the left and right sides (front and back of the drawing)
A mounting recess 7 of the hinge 10 described below is cut out.

The door 8 is made of a thick plate, and
The height and width of the opening 6 are set so as to be in an out-set state, that is, externally mounted, and slide rails 9 are provided on the left and right sides of the back, respectively. By fixing 9a, it is provided long in the vertical direction.

The slide rail 9 is, as is well known,
A long outer rail 9a and a short inner rail 9b are slidably engaged via a ball retainer (not shown) rotatably holding a plurality of steel balls (not shown), and are formed. The upper end of the back surface of the inner rail 9b is attached to the hinge 10 fixed in the mounting recess 7 of the top plate 2 described above. The above configuration is common to all of claims 1 to 6.

Further, brackets 18 are protrudingly provided on the back surface of the door 8 in the vicinity of the lower left and right ends, and the front ends of the respective stays 16 are provided with pins 18.
a, the base end of each of the stays 16 is located on the inner surface of the left and right side plates 4, 4 of the door mounting body 1. At the upper end side from the center, it is rotatably supported by the rotating shaft 12. Therefore, as shown in FIGS. 1 and 2, the door 8 can be opened by rotating up with the stay 16 as a radius, and can be closed by rotating down.

Further, in claims 3 to 6,
The base end of the stay 16 does not simply rotate about the rotation shaft 12, but rather, as shown in FIGS. 1 and 2, is attached to the inner surfaces of the left and right side plates 4, 4 of the door mounting body 1. The damper 11 is located above the opening 6 from the center.
The substrate 13 to which the rotating shaft 12 is fixed
4 ‥‥‥, and the base end of the stay 16 is fixed to the main body 15 forming the outer cylinder of the damper 11 by screws 17. Thus, the damper 11 buffers the door load torque, that is, A braking force is applied to the motor 8 so that a gentle closing operation can be obtained.

Further, a bracket 19 is fixed to a substantially middle portion in the length direction of the stay 16 by screws 20 ° over all claims, and in the bracket 19, claims 1 and 2, On the sides 4, 4
According to Claims 3 to 6, a stay tension spring 22 is provided between a substrate 13 to which the rotation shaft 12 of the damper 11 is fixed and a spring hook 21 protruding from a position above and forward of the damper 11. Is stretched. As a result, the outer rail 9a is
The door 8 and the door 8 are integrally slidable in the vertical direction, and are urged in the door opening direction by the tension of the stay tension spring 22. When the door is closed, the damper 11 is used.
To provide a cushioning effect on the door load torque, ie, the door 8
A braking force is applied to the door so that a gentle door closing operation can be obtained.

Also, as shown in FIG. 1, the bracket 19 is not fixed to the stay 16 with a screw 20 °, but the through hole 19a of the bracket 19 is fixed as shown in FIG. The bracket 19 is slidably mounted and fixed with a push screw 20a, and the bracket 19 is arbitrarily moved in the length direction of the stay 16 so that the tension of the stay extension spring 22 is reduced by the size of the door 8. It can also be formed so that it can be adjusted according to the weight and the like.

As a tension adjusting mechanism of the above-mentioned stay tension spring 22, in addition to the structure shown in FIG. 4, a bracket 19 is fixed to the stay 16 by a screw 20 ° as shown in FIGS. The rotor 24 is rotatably supported by the bracket 19, and an adjusting screw 25 is rotatably inserted into a through hole 24 a of the rotor 24, and the male screw portion 25 a
A spring mounting movable body 26 may be screwed to the spring mounting movable body 26, and one end of the stay extension spring 22 may be mounted on the spring mounting movable body 26. In this case, the adjusting screw 25 is rotated in the left-right direction. The spring mounting moving body 26 moves freely along the male screw portion 25a so that the tension of the stay extension spring 22 is adjusted arbitrarily.

Further, as shown in FIG. 7, the door tension springs 27 are provided on the right and left sides of the slide rail 9 on the back surface of the door 8, as shown in FIGS. A groove 28 is provided in the vertical direction.

The above-described door tension spring 27 has one end at the upper end of the hinge 10 and is hooked on a spring hook 10a protruding from the opening 6 side. By being hooked on a spring hook 29 planted at the lower end, it is stretched in the groove 28.

The door 8 is connected to the hinge body 10b of the hinge 10 on the opposite side of the spring hook 10a from the top plate 2 of the door mounting body 1.
And is fixed by screws (not shown) so as to be rotatable vertically about the support shaft 10c of the hinge 10. Thus, the outer rail 9a and the door 8 fixed thereto can be slidable in the vertical direction with respect to the inner rail 9b.
When the door tension spring 27 is provided as described above, the door is urged in the door opening direction by the tension based on the restoring force of the extended door tension spring 27 in the closed state. still,
Here, in the illustrated embodiment, not only the door tension spring 27 but also the slide rail 9 is attached to the groove 28 formed on the back surface of the door 8. Can be attached to the back surface of the same as above instead of the groove 28.

As shown in FIG. 3, the coil spring 30 has one end 30a of the coil spring 30 and the other end 30b of the main body 15 of the damper 11, as shown in FIG.
, And the door 8 is opened horizontally as shown by the two-dot chain line in FIG.
The braking force is exerted only at the time of turning in one direction, which is turned down in the direction of arrow A, and is closed.
Is twisted in the winding direction, and the resistance force at this time acts on the main body 15 of the damper 11, and the restoring force of the coil spring 30 obtained thereby together with the tension of the stay tension spring 22 described above is shown in FIG. And acts as a door-opening force at the time of opening the door, which rotates upward in the direction of arrow B shown in FIG. And FIG.
In this case, if the coil spring 30 is adopted for the damper 11, the tension of the door tension spring 27 is, of course, added to the tension of the stay tension spring 22 described above.

[0031] Since it is configured as described above,
In this case, when the user holds the lower end of the door 8 that is closed in the suspended state and pulls it upward, the lifting force is applied to the stay 16 via the door 8 as a rotational force in the door opening direction. So that the base end of the stay 16 is
By rotating the door 8 in this manner and opening the door 8 in this manner, the upper end of the inner rail 9b and the door mount 1
The door 8 pivots around the support shaft 10c, which is a pivot point of the top plate 2 with the front edge, while being assisted by the door-opening force of the stay extension spring 22 from the vertical state to the inclined state. As a result, the tension of the stay tension spring 22 causes the outer rail 9a and the door 8 to slide diagonally upward with respect to the inner rail 9b, and the door 8 slides toward the top plate 2 of the door mounting body 1. While rotating, it is placed on the top plate 2 in a horizontal state.

From the above stored state, with the front end of the door,
After this is pulled out against the tension of the stay tension spring 22, the front end of the door 8 is pushed down, and the pushing force is applied to the stay 16 via the slide rail 9 to rotate the stay 16 in the opposite direction to the above-described opening. Since the slide rail 9 is applied as a force, the slide rail 9 rotates about the support shaft 10c of the hinge portion 10, while the door 8 rotates about the rotation shaft 12 via the stay 16, but the door closes. At the time of formation, the stay extension spring 22 is extended, and the tension for the next door opening is accumulated, but the stay extension spring 22 is connected to the door mounting body 1 by the end thereof. On the inner surfaces of the side plates 4 and 4 between the upper part in front of the rotating shaft 12 (opening side of the door mounting body) and the substantially middle part of the stay 16, so that when the door is closed. Tension spring for stay 2
The length by which 2 is extended is smaller than twice when the door is opened, and the load of the stay extension spring 22 in the closed state is reduced.

Next, in the case of a second aspect, a door extension spring 27 is added to the configuration of the first aspect.
Both of this and the above-mentioned stay tension spring 22 work effectively, and if the lower end of the door 8 is held and opened as described above, the door 8 and the stay 16 When the pin 18a is pivoted to a position above the rotary shaft 12 which is a pivot point between the stay 16 and the side plates 4 and 4 of the door mounting body 1, the inner rail 9b is rotated.
Is rotatably pivotally attached to the front edge of the top plate 2 of the door mounting body 1 by the hinge 10 and includes the door extension spring 27 and the stay extension spring 22. Due to the tension of 27, a moment is generated to rotate the door 8 upward, and the outer rail 9a is fixed to the door 8, so that the outer rail 9a slides upward with the door 8 relative to the inner rail 9b, The door 8 rotates while sliding toward the upper side of the top plate 2 of the door mounting body 1 and is opened and mounted on the top plate 2 in a horizontal state.

When the door is opened as described above, the door 8 slides rearward due to the tension of the door tension spring 27 and the stay tension spring 22, and is placed horizontally on the top plate 2 of the door mounting body 1. , And even if the hand is released from the door 8,
The door 8 is held in an open state, and is held in a housed state placed on the top plate 2. If the front end of the door 8 is pulled out toward the front side against the tension of the two tension springs 22 and 27 from the storage state, if the front end of the door 8 is pushed down as described in claim 1, The pushing force is applied to the stay 16 via the slide rail 9 as a rotational force in a direction opposite to that at the time of opening, so that the slide rail 9 rotates about the support shaft 10c of the hinge 10,
On the other hand, the door 8 includes the base end of the stay 16 and the side plate 4 of the door mounting body 1,
4 is rotated about a rotation shaft 12 which is a pivot point with the rotation shaft 4. After the door 8 is rotated by a predetermined angle, the door 8 is rotated down by the load torque of the door 8 to be in a closed state. However, in the case of the above-described door closing operation, the two tension springs are used. 22 and 27 are extended, and when the door is opened next time, a tension for lightly opening the door is accumulated.

According to the third aspect, the stay 16 of the first aspect does not pivotally support the base end of the stay 16 directly to the inner surfaces of the side plates 4, 4 of the door mounting body 1.
1, the rotation shaft of the damper 11 rotates, but substantially no resistance is generated by the damper 11 at the time of the door opening operation already described in detail. Therefore, the door 8 is rotated without resistance, and is opened and mounted on the top plate 2 of the door mounting body 1 in a horizontal state as described above. On the other hand, when the door is closed, the damper 11
With respect to the main body 15, the rotating shaft 12 and the inner cylinder (not shown) are rotated in the opposite direction to the above-described opening, whereby the damper 11 is capable of responding to the load torque of the door 8 as is known. The door 8 exerts a braking force, and together with the braking force due to the elastic force of the stay tension spring 22, the door 8 is slowly rotated to be in a closed state in which the door 8 is suspended.

In the overhead door according to the fourth aspect, the door extension spring 27 is added to the third aspect. The operation of the door extension spring 27 is as described in the second aspect. Therefore, when the door is opened, the resistance by the damper 11 is generated, and the tension spring 27 for the door is sufficiently extended in the opened state to accumulate the restoring force. Tension spring 2
In addition, the opening operation of the door 8 is assisted by being added to the restoring force of the second embodiment, and the opening operation state is substantially the same as the second embodiment.

Further, when the door is closed, the damper 11 not only applies a resistance force to the door to be closed as in the case of the third aspect, but also the tension springs 22 and 27 also move when the door is closed. Then, since the resistance to the movement of the door 8 is given, the resistances of the above two are added, and a more reliable and effective closing even for a heavy door can be achieved. It can be realized.

Further, according to the fifth aspect, since the coil spring 29 is added to the damper 11 in the configuration of the third aspect, the damper 1 is opened when the door is opened.
1, the coil spring 30 is in the closed state and is entrained to accumulate the restoring force, so that the opening operation of the door 8 is assisted by the restoring force. A light opening operation can be guaranteed.
When the door is closed, the resistance force of the damper 11 acts as described above, and the coil spring 30 is wound. Therefore, the resistance force generated at this time is added to the resistance force of the damper 11, and the door is closed. By applying a sufficient braking force when closing the door, the door can be closed slowly.

In the case of the sixth aspect, since the door tension spring 27 according to the fourth aspect is used in combination with the configuration of the fifth aspect, the resistance of the damper 11 when the door is opened is reduced. No force is applied, and the respective restoring forces of the stored energy can be used for the coil spring 30 and the tension springs 22 and 27, whereby the door opening operation can be performed with a lighter force.
When the door is closed, not only the resistance of the damper 11 is exerted, but also the coil spring 3
Since zero and the resistance force of the two tension springs 22 and 27 are also added, the door 8 can further realize a slow closing operation with high reliability.

[0040]

Since the present invention is constructed as described above, according to the first aspect, the hinge and the stay are pivoted by the hinge so that the door can be freely opened and closed with respect to the door mounting body. When the door is supported and is opened after the door is opened, the door is mounted via a slide rail so as to be capable of retreating and slidable by pulling-out operation, and the opened door is mounted on the door mounting body. Since it is stored on the top plate, the door and its attachment mechanism do not hinder the taking in and out of the storage object, and the storage space inside the door mounting body can be widened.

According to the first aspect of the present invention, when the door is opened, the stay is stretched in order to reduce the force required for the opening and to obtain a gentle closing operation of the door without impact. Since the tension spring has its end stretched between the inner surface of the side plate of the door mounting body and the middle portion in the longitudinal direction of the stay connecting the side plate of the door mounting plate and the door, the tension spring is When the door is closed, the length of extension of the stay tension spring can be reduced to twice or less, and therefore, the load of the stay tension spring can be reduced as compared with the conventional example. Accordingly, the life of the door can be extended, and a light opening and closing operation of the door can be guaranteed for a long period of time.

According to a second aspect of the present invention, in the configuration of the first aspect, the door tension spring is stretched between the hinge and the lower end of the concave groove of the door. The door is retracted at the same time as the door is opened by the tension spring for the stay and the slide rail. When the door is closed, the tension of the door tension spring and the tension spring for the stay against the door load torque is applied. Works, the door can be closed without the need to support it with a large force against the load torque of the door, and this door tension spring is installed in a concave groove formed vertically on the back of the door. It does not separate from the door even when the door is opened, so the appearance is good when the door is opened, and there is the danger of accidentally pinching the fingertip etc. with the door tension spring etc. when opening and closing the door. It is safe because it can eliminate the occurrence Since never extend outwardly from the opening of the tension spring is also the door mount stay, there is no occurrence of danger due to this.

According to the third aspect, in addition to the effect of the first aspect, the damper exerts a buffering action on the door load torque, that is, a braking force is exerted on the door. Closure is prevented, without impact,
A gradual closing operation can be obtained.

In the case of the fourth aspect, in addition to the effect of the second aspect, in addition to the spring force of the two tension springs,
Since the damper provides a buffering effect on the door load torque, that is, a braking force on the door, abrupt closing of the door is prevented, and a gentler closing operation with less impact is obtained.

According to the fifth aspect, in addition to the effect of the third aspect, the coil spring suppresses not only the braking force by the damper when the door is closed but also the closing of the door. Thus, a gradual closing operation can be performed, and when the door is opened, the door can be opened with a small force by the restoring force of the coil spring.

In the overhead door according to the sixth aspect, in addition to the effect according to the fifth aspect, the action based on the double tension spring according to the fourth aspect is exhibited.
The effect of opening and closing the door by the gradual closing operation when the door is closed by the coil spring and both extension springs and the assisting effect on the opening operation by the coil spring and both extension springs when the door is opened Can be encouraged.

[Brief description of the drawings]

FIG. 1 is a vertical sectional side view showing a closed state of an overhead door according to an embodiment of the present invention.

FIG. 2 is a cross-sectional plan view taken along line II-II in FIG.

FIG. 3 is a partially cutaway side view of the damper in the embodiment.

FIG. 4 is a side view in which a tension adjusting mechanism of a stay tension spring in the overhead door according to the present invention is partially cut away.

FIG. 5 is a partially cutaway side view showing another embodiment of the tension spring tension adjusting mechanism for the stay.

FIG. 6 is a front view showing a bracket of the tension spring tension adjusting mechanism for the stay in FIG. 5;

FIG. 7 is a vertical sectional side view of a door closed state showing another embodiment of the overhead door according to the present invention.

FIG. 8 is a vertical sectional side view showing a closed state of an overhead door separately proposed by the present applicant.

FIG. 9 is a vertical sectional side view showing a conventional overhead door.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Door mounting body 2 Top plate 4 Side plate 8 Door 9 Slide rail 9a Outer rail 9b Inner rail 10 Hinge 11 Damper 12 Rotating shaft 15 Main body 16 Stay 22 Stay extension spring 27 Door extension spring 28 Concave groove 30 Coil spring

Claims (6)

(57) [Claims] 1. A base end of a stay is rotatably supported by a rotating shaft on an inner surface of a side plate of a door mounting body such as a cabinet or the like, and a tip of the stay is pivotally mounted near a lower end of a back surface of the door. On the back surface of the door, a long outer rail and a short inner rail are slidably engaged with each other. The upper end of the inner rail is hinged to the front edge of the top plate of the door mount so that it can be opened and closed in the up and down direction and can be placed on the top plate of the door mount, and On the inner surface of the side plate, a stay tension spring is stretched between an upper portion forward of the base end of the stay and a substantially middle portion of the stay, and the stay tension spring is used for the inner rail with respect to the inner rail. , Outerley An overhead door, wherein the door and the door are urged upward. 2. A base end of a stay is rotatably supported by a rotating shaft on an inner surface of a side plate of a door mounting body such as a cabinet or the like, and a tip of the stay is pivotally mounted near a lower end of a back surface of the door. On the back surface of the door, a long outer rail and a short inner rail are slidably engaged with each other. The upper end of the inner rail is hinged to the front edge of the top plate of the door mount so that it can be opened and closed in the up and down direction and can be placed on the top plate of the door mount, and On the inner surface of the side plate, a stay tension spring is stretched between an upper portion forward of the base end of the stay and a substantially middle portion of the stay, and the stay tension spring is used for the inner rail with respect to the inner rail. , Outerley The door and the door are urged upward, and a concave groove is formed in the back surface of the door so as to be long in the vertical direction. The lower movement of the outer rail and the door is controlled with respect to the inner rail by the tension spring for the door, and the lower movement is controlled, and the upper movement is performed. Is an overhead door characterized by being energized. 3. A rotating shaft of a damper is fixed to an inner surface of a side plate of a door mounting body such as a cabinet, and a base end of a stay is fixed to a main body of the damper. On the other hand, on the back surface of the door, the outer rail of the slide rail, which is formed by slidably engaging a long outer rail and a short inner rail, is provided in the up and down direction so that the door rotates. The upper end of the inner rail is hinged to the front edge of the top plate of the door mount so as to be openable and closable in a vertical direction by a slide and can be placed on the top plate of the door mount, and the door is hinged. On the inner side plate of the mounting body, a stay tension spring is stretched between an upper front portion of the damper and a substantially middle portion of the stay, and the stay tension spring is used to extend the stay rail with respect to the inner rail. , An overhead door characterized in that the outer rail and the door are biased upward. 4. A rotating shaft of a damper is fixed to an inner surface of a side plate of a door mounting body such as a cabinet, a base end of a stay is fixed to a main body of the damper, and a tip of the stay is pivotally mounted near a lower end portion of a back surface of the door. On the other hand, on the back surface of the door, the outer rail of the slide rail, which is formed by slidably engaging a long outer rail and a short inner rail, is provided in the up and down direction so that the door rotates. The upper end of the inner rail is hinged to the front edge of the top plate of the door mount so as to be openable and closable in a vertical direction by a slide and can be placed on the top plate of the door mount, and the door is hinged. On the inner side plate of the mounting body, a stay tension spring is stretched between an upper front portion of the damper and a substantially middle portion of the stay, and the stay tension spring is used to extend the stay rail with respect to the inner rail. , The outer rail and the door are urged upward, and a concave groove is formed in the back surface of the door so as to be long in the vertical direction. In the concave groove, a door tension spring is provided at each end thereof. The upper rail of the hinge and the lower end of the concave groove are respectively hung and stretched, and the lowering of the outer rail and the door is controlled with respect to the inner rail by the tension spring for the door. An overhead door characterized in that the movement is biased. 5. A damper rotating shaft is fixed to an inner surface of a side plate of a door mounting body such as a cabinet, and a base end of a stay is fixed to a main body of the damper. On the other hand, on the back surface of the door, the outer rail of the slide rail, which is formed by slidably engaging a long outer rail and a short inner rail, is provided in the up and down direction so that the door rotates. The upper end of the inner rail is hinged to the front edge of the top plate of the door mount so as to be openable and closable in a vertical direction by a slide and can be placed on the top plate of the door mount, and the door is hinged. On the inner side plate of the mounting body, a stay tension spring is stretched between an upper front portion of the damper and a substantially middle portion of the stay, and the stay tension spring is used to extend the stay rail with respect to the inner rail. , The outer rail and the door are urged upward.Furthermore, the damper is provided with a coil spring. It is mounted on the body side of the damper, respectively, and by the restoring force by the coil spring,
An overhead door, wherein an outer rail and a door are biased upward with respect to the inner rail. 6. A damper rotating shaft is fixed to an inner surface of a side plate of a door mounting body such as a cabinet, and a base end of a stay is fixed to a main body of the damper. On the other hand, on the back surface of the door, the outer rail of the slide rail, which is formed by slidably engaging a long outer rail and a short inner rail, is provided in the up and down direction so that the door rotates. The upper end of the inner rail is hinged to the front edge of the top plate of the door mount so as to be openable and closable in a vertical direction by a slide and can be placed on the top plate of the door mount, and the door is hinged. On the inner side plate of the mounting body, a stay tension spring is stretched between an upper front portion of the damper and a substantially middle portion of the stay, and the stay tension spring is used to extend the stay rail with respect to the inner rail. , The outer rail and the door are urged upward, and a concave groove is formed in the back surface of the door so as to be long in the vertical direction. In the concave groove, a door tension spring is provided at each end thereof. The upper rail of the hinge and the lower end of the concave groove are respectively hung and stretched, and the lower movement of the outer rail and the door is controlled with respect to the inner rail by the tension spring for the door. The movement is urged, and the ends of the coil spring are respectively attached to the rotation shaft side and the main body side of the damper so that the coil spring can be screwed in the winding direction by rotation in the door closing direction. An overhead door, which is mounted and mounted, and biases the outer rail and the door upward with respect to the inner rail by the restoring force of the coil spring.