KR101437846B1 - Sliding door operated by hand including buffer means - Google Patents

Abstract

The present invention relates to a passive type sliding door provided with a shock absorbing means, comprising: a guide rail formed on an upper door frame; upper and lower retaining gears; A left and right support table provided at an upper end of the door; Left and right moving rollers installed to be rotatable on the left and right support rods; A fixed support installed at an upper end of the door;
A rotation shaft which is rotatably assembled to the case body; an oil chamber formed in the case body; and a driving gear which is installed at one end of the rotary shaft so as to be rotatable in the oil chamber, An interlocking gear rotatably mounted on one side of the oil chamber so as to be meshed with the drive gear, and a driven gear rotatably mounted on the other end of the rotary shaft projecting outward from the case body and alternately engaged with the upper and lower return gears A sliding door comprising an oil damper provided with a pinion moving along an upper and lower rec gear while rotating,
An outer ring inserted to be fixed to an insertion groove formed in a case body of the oil damper, and a bearing which rotatably supports the rotary shaft; A sealing nut detachably attached to an inlet of the insertion groove to seal an inlet of the insertion groove formed in the case body; And a hermetic packing interposed between the bearing and the sealing nut.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a sliding door,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a passive type sliding door having a buffering means, more specifically, when a sliding door is severely opened and closed, when the door reaches a position close to each of the left and right door frames, The present invention relates to a hand-operated sliding door provided with a buffer means for temporarily stopping a buffered state momentarily and then smoothly opening and closing a door.

In general, the sliding door is configured to be opened and closed by moving the door to the left and right. In other words, the sliding door is referred to as a sliding door,

The sliding door is a semi-automatic type that is opened manually by the force of man and opened by the power of man when it is opened, but automatically closed when it is opened.

The manual sliding door is installed in a large building such as a hospital or a public office, an elementary school, a middle school, a high school, and a university. The sliding door of the related art has a roller that rolls along a rail fixed above the upper door frame Or a roller that rolls along a rail groove formed on the upper surface of the lower door frame.

The semi-automatic sliding door is configured to automatically close the sliding door after opening the sliding door by using an automatic traction device that pulls the pulling string by the elastic restoring force of the spring wound on the upper door frame in one side.

However, in the above-mentioned conventional manual type sliding door, when a person who wants to open or close a door grasps the handle, the door is opened and closed by the force of the force pushing the door toward the opening direction or the closing direction. There is a problem that shock noise and vibration occur and the safety accident due to a phenomenon that a finger or a hand of a person is caught between the door and the door frame may occur The door has been pointed out as a disadvantage. On the contrary, when the door is weakly pushed, the door is moved slowly so that the door is not completely opened or the door is not completely closed.

Especially, from elementary schools to universities, it is the biggest problem that students frequently push the sliding door by hand or open it by pushing hard, and the safety incidence is high.

In the conventional semi-automatic sliding door, when a person opens a door, a pulling-out line that is resiliently pulled out from the automatic pulling-out device controls the opening speed of the door, so that the person who opens the door can see the elasticity of the pulling- It is pointed out as a disadvantage that it should open with the power of the sen.

In addition, in the conventional semi-automatic sliding door, in order to be able to bufferively control the opening and closing operations of the door when the door is opened and closed, the upper and lower doors are fixed to the upper and lower sides, And an oil damper mounted on an upper end of the sliding door and protruding from the pinion protruding to the upper and lower gears alternately to the left and right in the opening direction and the closing direction, It is currently being used that, during operation and during closed operation, the door is momentarily stopped, then slowly opened and closed, and the opening and closing operations are performed.

As shown in FIG. 6, the oil damper 100 used in the semi-automatic sliding door described above includes a case body 110, a rotating body 120 which is engaged with the oil chamber 120 formed inside the case body, A case cover 150 covering the case body 110 and a drive gear 130 mounted on the case cover 110 so as to be rotatable together with the drive gear 130, And the other end rotatably supports the interlocking gear 140 while being rotatably supported on the case body 110 and the case body 110. The rotation shaft 160 is installed to protrude outward through the case body 110, A pinion gear 180 rotatably mounted on the other end of the rotating shaft 160 protruding out of the case body 110 to rotate together with the rotating shaft 160, ) Can freely rotate The bush 190 and the retainer 200 are mounted on the rotary shaft 160 to prevent the oil present in the oil chamber 120 from leaking while allowing the rotary shaft 160 to freely rotate. The retainer 200 is mounted on the case body 110 so as to surround the outer circumference of the rotation shaft 160 so that the rotation shaft 160 can rotate. , And the retainer 200 is fixed to the case body 110 using an adhesive.

The oil damper 100 of the prior art constructed as described above is adapted to a semi-automatic sliding door provided with an automatic traction device. That is, in the oil damper 100, when the sliding door is opened and closed at a slow speed by the elastic restoring force of the pull string provided on the automatic roll device, the pinion 180 engaged with the return gear also rotates at a slow speed, The driving gear 130 and the interlocking gear 140 engaged with the driving gear 130 are simultaneously rotated at a slow speed to push the oil in the oil chamber 120. At this time, And the oil pushed by the rotation operation of the interlocking gear 140 pushes the ball valve mounted in the oil passage in the case body 110. Accordingly, the ball valve closes the valve hole of the valve plate (See FIG. 4). The oil in the oil chamber 120 stops flowing at the moment when the rotational force generated when the pinion 180 rotates while being engaged with the rec gear at a slow speed is transmitted to the driving gear 130. At this time, The oil pressure in the oil chamber 120 when the oil in the oil chamber 120 can not flow and the oil in the oil chamber 120 is stopped is not so high. Thus, the oil pressure in the oil chamber 120 is instantaneously applied to the oil chamber 120 The retainer 200 mounted on the case body 110 rotatably supports the rotary shaft 160 on which the pinion 180 of the oil damper 100 is installed and prevents leakage of the oil, The oil damper 100 of the prior art is designed and manufactured to withstand the oil pressure applied to the oil chamber 120 when the oil pressure applied to the oil chamber 120 is weak. A problem that the retainer 200 mounted on the case body 110 is damaged to rotatably support the rotation shaft 160 is pointed out as a problem.

Therefore, the conventional oil damper can not be applied to a manual sliding door used as a classroom door of an elementary school or a university.

This is because whenever some students from elementary school to college students open and close a manual sliding door at high speed, the oil pressure in the interior of the oil damper during the opening operation of the door and the closing operation is higher than the design pressure repeatedly This is because the retainer is easily damaged when operated, and the oil damper can not perform the damping action of the sliding door. Therefore, when the door is opened and closed, the safety damper between the door and the door frame can not be prevented .

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems in the related art. Even if the operation of opening and closing the manual sliding door is repeatedly repeated, the oil damper is not damaged, It was invented with the aim of preventing safety accidents in advance.

The present invention, as a means for realizing the above object,

A guide rail formed on the upper door frame;

An upper and a lower return gear fixedly installed at upper and lower positions displaced from each other in a state in which they are formed at positions higher than the guide rails;

Left and right support rods fixed to the upper end of the door so as to protrude upward;

Left and right movable rollers rotatably mounted on the left and right support rods so as to allow the rolling movement of the guide rails reciprocally;

A fixed support fixed to the upper end of the door so as to protrude upward;

A case body coupled to the case cover, a rotating shaft rotatably assembled to the case body, an oil chamber formed in the case body, and an oil chamber rotatable within the oil chamber A driven gear which is rotatably mounted on one side of the oil chamber so as to be meshed with the drive gear, and a driven gear which is supported on the other end of a rotary shaft projecting to the outside of the case body, And a pinion that moves along the upper and lower rec gears while being rotated each time the gears are alternately engaged with the gears,

An outer ring inserted to be fixed to an insertion groove formed in a case body of the oil damper, and a bearing which rotatably supports the rotary shaft;

A sealing nut detachably attached to an inlet of the insertion groove to seal an inlet of the insertion groove formed in the case body;

An airtight packing interposed between the bearing and the sealing nut;

And a control unit.

Further, the hermetic packing interposed between the bearing and the sealing nut is installed in contact with the outer ring of the bearing.

Further, the sealing nut is characterized in that an O-ring is provided to prevent the oil from leaking while supporting the rotating shaft so as to rotatably surround the rotating shaft.

Further, an automatic traction device is installed on one side of the upper door frame, and a pulling end of a pulling-out line is connected to a left support.

According to the present invention, the manual sliding door has the effect of opening and closing the door smoothly without hitting the left and right door frames when the door is opened and closed. Especially, when the passive sliding door of the present invention is installed from the elementary school to the university, So as to prevent a safety accident in which a part of the hand or body is caught between the door and the door frame due to a buffering action which stops once at a certain distance before it hits the left and right door frames during opening and closing operations There is an advantage in that.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view showing an installation state of a sliding door
2 is a sectional view taken along the line AA in Fig. 1
3 is a sectional view taken along the line BB in Fig. 2
4 is a sectional view taken along the line CC in Fig. 3
5 is a view showing a state in which a sliding door is installed according to another embodiment of the present invention
Figure 6 is a partial cross-sectional view of a prior art oil damper

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a manually operated sliding door with a shock absorber according to the present invention will be described in detail with reference to the accompanying drawings.

Fig. 1 is an installation view of the manual sliding door of the present invention. The upper door frame 1c is fixed to the upper ends of the left and right door frames 1a and 1b in the lateral direction.

The upper door frame 1c is provided with the guide rails 2 in the transverse direction and the upper and lower rack gears 3a and 3b are formed on the upper side of the guide rails 2 in a symmetrical state. And the lower recoil gear are formed at positions displaced from each other. 1, the upper recoil gear 3a is disposed near the left door frame 1a and the lower recoil gear 3b is disposed near the right door frame 1b .

The sliding door 4 is installed on the penis upper door frame 1c such that the sliding door 4 can reciprocate left and right toward the left and right door frames 1a and 1b. Left and right moving rollers 5a and 5b which reciprocate left and right along the guide rail 2 are provided on the left and right support rods 51 and 52, respectively, so that the support rods 51 and 52 protrude upward. ) 5b are rotatably provided.

A fixed support 60 protruding upward is provided between the left and right support rods 51 and 52 at the upper end of the sliding door 4. An oil damper 6 is mounted on the fixed support rods 60 .

The oil damper 6 includes a case body 61 and a case cover 62 assembled to cover the case body 61. The case body 61 has an oil chamber 63 formed in an 8- One side oil passage 64 connected to one side of the oil chamber 63 and the other side oil passage 65 connected to the other side of the oil chamber 63 and one side and the other side oil passage 64 A protrusion 641 protruding from the one side oil passage 64 and the other side oil passage 65 so as to face each other at positions near the valve plate 66; A bypass passage 67 connected to the other oil passage 65 and an oil control passage 68 connecting the bypass passage 67 and the one oil passage 64; A valve hole 661 formed in the valve plate 66 is opened between the one side projection 641 and the valve plate 66 in the one side oil passage 64 A ball valve 69 is incorporated.

The oil chamber 63 is rotatably mounted with the driving gear 7a and the interlocking gear 7b meshed with each other. One side of the case body 61 A control valve 8 is inserted into a valve installation hole (not shown) installed to be exposed to the outside of the control valve 8 (see FIG. 4) A valve rod 82 formed at the tip of the regulating valve 8 is inserted into the oil regulating passage 68 through the bypass passage 67 to be filled with the oil And is configured to control opening and closing of the regulating passage 68.

One end of a rotary shaft 7 for transmitting a rotary force to a drive gear 7a provided in an oil chamber 63 of the case body 61 is fixed to a drive gear 7a, A pinion 71 is assembled in a state where the other end protrudes to the outside of the case body 61. The interlocking gear 7b is supported by the case body 61 and the case lid 62, (Not shown).

A feature of the present invention is that the driving shaft 7a rotatably supports the rotary shaft 7 on which the pinion 71 and the driving gear 7a are respectively rotatably supported by the case body 61, The oil is prevented from leaking even if the oil pressure in the oil chamber 63 suddenly becomes high suddenly.

An outer ring 91 formed on the outer side of the bearing 9 is fixedly inserted into the insertion groove 611 formed in the case body 61 and the inner ring 92 formed on the inner side of the bearing 9 And a sealing nut 93 is screwed into the insertion groove 611 of the case main body 61 so as to be rotatable together with the rotary shaft 7, The airtight packing 94 is interposed between the nut 93 and the bearing 9 so that the airtight packing 94 is compressed between the sealing nut 93 and the outer ring 91 of the bearing 9 As shown in Fig.
(Not shown) existing between the outer ring 91 and the inner ring 92 in the same manner as the conventional bearing of the bearing 9, The outer ring 91 of the bearing 9 is fixedly held in the inner surface of the insertion groove 611 of the case body 61 while the inner ring 92 of the bearing 9 is rotated along the rotation axis 7 Respectively.
The airtight packing 94 is pressed against the inside of the insertion groove 611 of the case body 61 and is hermetically contacted with the outer ring 91 of the bearing 9 to perform a hermetic action .

The sealing nut 93 that is screwed into the insertion groove 611 of the case body 61 rotatably supports the rotary shaft 7 and prevents the oil from leaking to the sealing nut 93 An O-ring 95 that hermetically surrounds the outer circumference of the rotary shaft 7 is built in.

5, the automatic traction device 10 is installed on one side (left side in the figure) of the upper door frame 1c, and the inside of the automatic traction device 10 is spring- The pulling line 11 is pulled out and the leading end of the pulling line 11 is connected to the left supporting table 51. After the sliding door 4 is opened, the automatic pulling device 10 elastically holds the pulling line 11 The sliding door 4 can be automatically closed by the pulling operation.

The operation of the present invention configured as described above will be described.

1 shows that the sliding door 4 is opened to some extent and the oil damper 6 is located between the upper and lower retaining gears 3a and 3b. In this state, the sliding door 4 When the sliding door 4 is moved to the lower recoil gear 3b to open or to the upper recoil gear 3a to close the sliding door 4, The drive gear 7a mounted on the case body 61 of the oil damper 6 is rotated in the clockwise direction as the pinion 71 And the interlocking gear 7b engaged with the driving gear 7a is rotated in the counterclockwise direction.

When the pinion 71 of the oil damper 6 engaged with the upper and lower retaining gears 3a and 3b fixed to the upper door frame 1c rotates in the clockwise direction in the figure, The driving gear 7a mounted on the oil chamber 63 of the case body 61 rotates in the clockwise direction and the interlocking gear 7b rotates in the counterclockwise direction, The ball valve 69 (refer to the solid line portion in FIG. 4) contained in the one-side oil passage 64 is moved toward the valve plate 66 and flows into the valve hole 66 661 are closed (see the imaginary line portion in FIG. 4).

The oil that moves from the oil chamber 63 toward the one oil passage 64 is prevented from moving toward the other oil passage 65 through the valve hole 661 of the valve plate 66. Thus, 63 can not move to the valve hole 661 of the valve plate 66 through the one-side oil passage 64, the drive gear 7a and the interlocking gear 7b can not rotate and stop temporarily The pinion 71 mounted on the rotating shaft 7 to which the driving gear 7a is attached is also prevented from rotating and is stopped.

The operation in which the pinion 71 can not rotate and stops as described above occurs momentarily when the sliding door 4 is moved toward the left door frame 1a and closed or moved toward the right door frame 1b. That is, after the oil moving in the oil chamber 63 is momentarily pushed out of the ball valve 69 to close the valve hole 661 of the valve plate 66, 64 to the bypass passage 67 through the oil control passage 68 allows the oil in the oil chamber 63 to pass through the one-way oil passage 64 and the oil control passage 68 The oil flowing into the bypass passage 67 is supplied again to the oil chamber 63 through the other oil passage 65 so that the pinion 71 is returned to the upper rack gear When the pinion 71 is rotated as described above, the sliding door 4 is turned toward the left door frame 1a or the right door frame 1b It is moving.

Therefore, when the sliding door 4 moves toward the left door frame 1a or moves toward the right door frame 1b as viewed from the view of Fig. 1, the pinion 71 mounted on the oil damper 6, The pinion 71 is momentarily stopped by the buffer action of the oil damper 6 in the initial stage of engagement with the upper recoil gear 3a or the lower recoil gear 3b and then rotated again. The pinion 71 rotates in the clockwise direction while the pinion 71 is engaged with the upper rack gear 3a in the operation of closing the left door frame 1a, When the pinion 71 is momentarily stopped, the sliding door 4 is instantaneously stopped before the sliding door 4 is closed to the left door frame 1a, and the pinion 71 is rotated in the clockwise direction, The sliding door 4 is moved toward the left door frame 1a again and is closed to the left door frame 1a.

1, the pinion 71 of the oil damper 6 mounted on the upper end of the door is moved toward the right door frame 1b to open the sliding door 4, The drive gear 7a and the interlocking gear 7b provided on the rotary shaft 7 on which the pinion 71 is installed are rotated clockwise when the gear 7b meshes with the gear 3b. Is rotated as shown by the arrows in FIG. 4, so that the operation is the same as that when the sliding door 4 described above is closed to the left door frame 1a, so that a description thereof will be omitted.

As described above, when the sliding door 4 is moved close to the right door frame 1b by a certain distance when the sliding door 4 is moved toward the right door frame 1b in order to open the sliding door 4, When the sliding door 4 is moved toward the right door frame 1b and the sliding door 4 is moved toward the left door frame 1b to open the sliding door 4, The sliding doors 4 and 5 of the present invention are applied to the entrance doors of the respective classrooms of the elementary school or university so that when the sliding door 4 is opened, The sliding door 4 hits each of the left and right door frames 1a and 1b so as not to open or close the left and right door frames 1a and 1b 1b of the sliding door 4, the operation of continuously opening or closing the door is progressed gradually after a buffering action to temporarily stop the sliding door 4, so that a safety accident that may occur when the sliding door 4 is severely opened and closed can be prevented will be.

The pinion 71 mounted on the oil damper 6 at the upper end of the sliding door 4 is prevented from rotating by the upper rak gear 3a or the lower rak gear 4 when the sliding door 4 is firmly opened or closed. The driving gear 7a and the interlocking gear 7b mounted on the oil chamber 63 are rotated to move the oil in the oil chamber 63 to the one side oil passage 64 The oil damper 6 of the present invention is exposed to the outside through the driving gear 7a mounted on the oil chamber 63 and the upper and lower portions of the oil chamber 63 are exposed to the outside, The rotary shaft 7 in which the pinion 71 engaged with the rack gears 3a and 3b is rotatably installed is supported by a bearing 9 which is inserted into the insertion groove 611 of the case body 61 And is also screwed to the case 9 and the case body 61 Tight packing 94 is provided between the nut 93 and the hermetic packing 94. The hermetic packing 94 is supported by the outer ring 91 fixed to the case body 61 by interference fit, The oil 95 that hermetically seals the rotating shaft 7 rotatably fitted in the sealing nut 93 is prevented from leaking to the sealing packing 94 by the rotation shaft 7 to prevent leakage.

On the other hand, when the sliding door 4 is to be opened in a closed state in contact with the left door frame 1a or when the sliding door 4 is to be closed in an open state in which the sliding door 4 is in contact with the right door frame 1b, When the pinion 71 mounted on the damper 6 is rotated while being engaged with the upper and lower retaining gears 3a and 3b, the pinion 71 rotates in the counterclockwise direction, The driving gear 7a is rotated in the counterclockwise direction and the interlocking gear 7b engaged with the driving gear 7a rotates in the clockwise direction. At this time, the driving gear 7a, The oil supplied to the other oil passage 65 is supplied to the valve hole 661 of the valve plate 66 when the interlocking gear 7b and the interlocking gear 7b transmit the oil in the oil chamber 63 to the other oil passage 65. [ The oil chamber 69 is closed by the oil chamber 63, The oil flowing toward the other oil passage 65 is returned to the oil chamber 63 via the one oil passage 64 through the valve hole 661 so that the opening operation and the closing operation of the sliding door 4 are smoothly performed .

As shown in Fig. 5, the pulling end of the pulling string 11, which is wound on a spring which is spring-biased elastically, is pulled out to the automatic pulling apparatus 10 provided on one side (left side in the figure) of the upper door frame 1C, When the sliding door 4 is moved toward the right door frame 1b and the hand holding the sliding door 4 is released while the door is opened, The sliding door 4 is automatically closed because the device 10 elastically pulls the pull string 11.

1a and 1b: left and right door frames 1c: upper door frames
10: automatic traction device 11: pull line
2: guide rails 3a, 3b: upper and lower return gears
4: Sliding door 5a, 5b: Left and right moving rollers
51, 52: Left and right support rods 6: Oil damper
60: Fixing support 61: Case body
62: Case cover 63: Oil seal
64: one side oil passage 65: the other side oil passage
66: valve plate 67: bypass passage
68: Oil control passage 69: Ball valve
641, 651: one side and the other side projection 661:
7: rotating shaft 71: pinion
72: support shaft 8: regulating valve
81: O-ring 82:
9: Bearing 91: Outer ring
92: Inner ring 93: Closing nut
94: Confidential packing 95: O-ring

Claims (4)

A guide rail formed on the upper door frame;
An upper and a lower return gear fixedly installed at upper and lower positions displaced from each other in a state in which they are formed at positions higher than the guide rails;
Left and right support rods fixed to the upper end of the door so as to protrude upward;
Left and right movable rollers rotatably mounted on the left and right support rods so as to allow the rolling movement of the guide rails reciprocally;
A fixed support fixed to the upper end of the door so as to protrude upward;
A case body coupled to the case cover, a rotating shaft rotatably assembled to the case body, an oil chamber formed in the case body, and an oil chamber rotatable within the oil chamber A driven gear which is rotatably mounted on one side of the oil chamber so as to be meshed with the drive gear, and a driven gear which is supported on the other end of a rotary shaft projecting to the outside of the case body, And a pinion that moves along the upper and lower rec gears while being rotated each time the gears are alternately engaged with the gears,
An outer ring inserted to be fixed to an insertion groove formed in a case body of the oil damper, and a bearing which rotatably supports the rotary shaft;
A sealing nut detachably attached to an inlet of the insertion groove to seal an inlet of the insertion groove formed in the case body;
An airtight packing interposed between the bearing and the sealing nut;
Wherein the sliding door comprises a sliding door.
The method according to claim 1,
And a hermetically sealed packing interposed between the bearing and the sealing nut is installed in contact with the outer ring of the bearing.
The method according to claim 1,
Wherein the sealing nut includes an O-ring for supporting the rotating shaft so as to be rotatably wrapped while preventing leakage of the oil.
The method according to claim 1,
Wherein an automatic traction device is installed on one side of the upper door frame and a pulling end of a pulling line drawn out from the automatic traction device is connected to a left support pedestal.

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