CN219556741U - Folding noon break tablet chair - Google Patents
Folding noon break tablet chair Download PDFInfo
- Publication number
- CN219556741U CN219556741U CN202320651529.4U CN202320651529U CN219556741U CN 219556741 U CN219556741 U CN 219556741U CN 202320651529 U CN202320651529 U CN 202320651529U CN 219556741 U CN219556741 U CN 219556741U
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- seat
- backrest
- headrest
- frame
- adjusting
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Abstract
The folding noon break tablet chair comprises a bottom frame, a seat frame arranged on the bottom frame, a seat base arranged on the upper part of the seat frame, a backrest frame connected to the rear end of the seat frame through a backrest adjusting device and a backrest arranged at the front end of the backrest frame, wherein the backrest adjusting device comprises a fixed piece, a movable piece, an adjusting rotating shaft, an annular gear and a matched gear; the front end of the fixed piece is connected to the seat frame, the rear end of the fixed piece is provided with a movable space, the upper end of the movable piece is connected with the backrest frame, and the lower end of the movable piece is rotatably matched in the movable space; the inner gear ring is fixed on one side of the rear end of the fixing piece, the fixing piece is provided with a first rotating seat, and the adjusting rotating shaft is rotatably arranged on the first rotating seat; the matching gear is fixed on the lower end of the movable piece and is eccentrically connected with the adjusting rotating shaft, and the matching gear and the inner gear ring are meshed in part all the time. The utility model can realize the locking of the backrest frame at any angle, so that the backrest can be freely adjusted, and the use requirements of different users are met.
Description
Technical Field
The utility model relates to the field of chairs, in particular to a folding noon break tablet chair.
Background
At present, more and more students choose to take a noon break in schools, so that a foldable noon break tablet chair appears on the market, and when the noon break is needed, the students can expand the noon break tablet chair so as to lie on the expanded noon break tablet chair for taking a break, and the physical and mental health of the students is guaranteed.
A multi-degree-of-freedom adjustable noon break tablet chair such as disclosed in chinese patent publication No. CN217959243U, comprising a foot rest which can be adjusted in elevation by a foot rest adjusting assembly; the seat board framework is fixedly arranged at the top of the foot rest; a seat plate fixedly installed at the top of the seat plate frame; the backrest framework is arranged at the rear end of the seat plate framework through the backrest locking assembly, when the backrest locking assembly is in an unlocking state, the backrest framework can rotate relative to the seat plate framework, and when the backrest locking assembly is in a locking state, the backrest locking assembly locks the relative positions of the backrest framework and the seat plate framework; and the backboard is fixedly arranged on the front side of the backrest framework. The backrest locking assembly of the noon break desk adopts the locking pin to be matched with the locking bayonet and the second arc-shaped hole respectively to lock the angle of the backrest, when the locking pin is clamped into the locking bayonet, the backboard of the noon break desk is in a vertical state, and at the moment, the noon break tablet chair is in a class listening use state; when the backrest of the noon break tablet chair rotates and expands until the lock pin is abutted with one end of the corresponding second arc hole, which is far away from the locking bayonet, the noon break tablet chair is in a noon break use state, so that students can conveniently lie on the noon break tablet chair for noon break.
However, the lock pin of the backrest locking assembly of the noon break desk is matched with the locking bayonet and the second arc hole to lock two angles of the backboard, the adjustable angle of the backboard is small, students cannot adjust the angle of the backboard according to the body type of the students, and particularly when the noon break desk is in a class-listening use state, the angle of the backboard is too small, the use feeling is poor for the students with larger physique, and the class quality of the students is affected; if the angle of the back plate is too large, the back plate can not support the back of the student with smaller physique well, and the problem that the use experience is poor to influence the class quality of the student is also existed.
Based on the problems, the scheme provides a folding noon break tablet chair with a backrest capable of adjusting a plurality of angles.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model provides a folding noon break tablet chair.
The technical scheme adopted for solving the technical problems is as follows:
the utility model provides a folding noon break tablet chair, includes the chassis, locates the seat frame on the chassis, locates the seat support on seat frame upper portion, connects the back frame at the seat frame rear end, locates the back of back frame front end, its characterized in that through back adjusting device: the backrest adjusting device comprises a fixed part, a movable part, an adjusting rotating shaft, an annular gear and a matched gear;
the front end of the fixed piece is connected to the seat frame, the rear end of the fixed piece is provided with a movable space, the upper end of the movable piece is connected with the backrest frame, and the lower end of the movable piece is rotatably matched in the movable space;
the inner gear ring is fixed on one side of the rear end of the fixing piece, a first rotating seat is arranged on one side of the fixing piece far away from the inner gear ring, and the adjusting rotating shaft is rotatably arranged on the first rotating seat;
the matching gear is fixed on the lower end of the movable piece, the matching gear is movably arranged in the inner ring of the annular gear, the matching gear is eccentrically connected with the adjusting rotating shaft, and the matching gear and the annular gear are always in partial meshing.
In the utility model, the adjusting rotating shaft is provided with an eccentric cam for eccentrically connecting the matched gear, the lower end of the matched gear is provided with a cam matching hole, and the eccentric cam is matched in the cam matching hole.
In the utility model, a second rotating seat is arranged on one side of the inner gear ring far away from the fixed piece, the lower end of the movable piece is positioned between the first rotating seat and the second rotating seat, and the adjusting rotating shaft is rotatably arranged on the first rotating seat and the second rotating seat.
In the utility model, two backrest adjusting devices are arranged, and the adjusting rotating shafts of the two backrest adjusting devices are connected by adopting synchronous connecting rods.
In the utility model, a driving piece for driving the adjusting rotating shaft to rotate for a user is arranged on the adjusting rotating shaft of one backrest adjusting device.
In the utility model, the seat frame is connected with a leg support mechanism for supporting legs, and the leg support mechanism is arranged at the bottom of the seat frame in a foldable way.
In the utility model, the seat frame is arranged on the underframe in a height-adjustable way.
In the utility model, the backrest frame is provided with a headrest mechanism, and the headrest mechanism is mounted on the backrest frame in a height-adjustable manner.
In the utility model, the headrest mechanism comprises a headrest bracket and a headrest arranged on the top of the headrest bracket, wherein the backrest bracket is provided with a height lifting guide hole, the lower end of the headrest bracket is inserted into the height lifting guide hole in a sliding way, and the backrest bracket is provided with a headrest height locking structure for locking the height position of the headrest bracket.
In the utility model, the top of the headrest support is hinged with the movable connecting seat, the headrest is connected to the movable connecting seat, and a headrest angle locking structure is arranged between the movable connecting seat and the headrest support.
The utility model has the beneficial effects that:
1. the backrest adjusting device is matched with the annular gear through the matched gear eccentrically connected to the adjusting rotating shaft, so that the backrest frame can be locked, a user can rotate the backrest frame to any angle for locking, free adjustment of the backrest is realized, and the use requirements of different users are met;
2. the seat frame is arranged on the underframe in a height-adjustable way, so that the seat frame has the function of adjusting the height of the seat plate, and meanwhile, the headrest with the adjustable height is arranged, so that the seat frame is applicable to students with different heights;
in conclusion, the noon break tablet chair provided by the utility model can be used by students with different physique and different heights, so that the noon break tablet chair is suitable for being widely popularized and applied.
Drawings
The utility model is further described below with reference to the drawings and embodiments:
FIG. 1 is a perspective view of a noon break chair in a class use state;
FIG. 2 is a schematic view of a part of the structure of a noon break tablet chair;
FIG. 3 is an exploded view of a back adjustment device without a drive member;
FIG. 4 is an exploded view of a back adjustment device provided with a drive member;
FIG. 5 is a combined cross-sectional view of two backrest adjustment means;
fig. 6 is a schematic diagram of a combination of an inner ring gear and a driving gear;
fig. 7 is a second schematic diagram of a combination of an inner ring gear and a driving gear;
fig. 8 is an installation schematic view of the headrest mechanism;
FIG. 9 is a perspective view I of the noon break chair in a noon break use state;
fig. 10 is a perspective view of the noon break chair in a noon break use state.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.
Referring to fig. 1 to 10, a folding noon break tablet chair comprises a base frame 1, a seat frame 2 arranged on the base frame 1, a seat 3 arranged on the upper part of the seat frame 2, a backrest frame 5 connected to the rear end of the seat frame 2 through a backrest adjusting device 4, and a backrest 6 arranged at the front end of the backrest frame 5. Further, the backrest adjusting means 4 comprises a fixing member 41, a movable member 42, an adjusting rotating shaft 43, an inner gear ring 44 and a matching gear 45, wherein the front end of the fixing member 41 is connected to the seat frame 2, the rear end is provided with a movable space 411 for matching with the movable member 42, the upper end of the movable member 42 is connected with the backrest frame 5, and the lower end is rotatably matched in the movable space 411;
further, the inner gear ring 44 is fixed on one side of the rear end of the fixing member 41, a first rotating seat 46 is provided on one side of the fixing member 41 away from the inner gear ring 44, and the adjusting rotating shaft 43 is rotatably provided on the first rotating seat 46;
still further, the diameter of the mating gear 45 is smaller than the diameter of the ring gear 44, the number of teeth of the mating gear 45 is smaller than the number of teeth of the ring gear 44, and the diameter of the mating gear 45 is smaller than the diameter of the inner ring of the ring gear 44; the matching gear 45 is fixed on the lower end of the movable piece 42, the matching gear 45 is movably arranged in the inner ring of the annular gear 44, the matching gear 45 is eccentrically connected with the adjusting rotating shaft 43, and the matching gear 45 and the annular gear 44 are always in partial meshing.
When in use, a user drives the adjusting rotating shaft 43 to rotate, so that the eccentric cam 431 drives the matched gear 45 to rotate around the inner gear ring 44 while being meshed with the inner gear ring 44, and when the matched gear 45 rotates around the inner gear ring 44, the matched gear 45 synchronously links the movable piece 42 to rotate, thereby enabling the back rest 5 to rotate in an angle, and realizing the angle adjustment of the back rest 6; after stopping rotating the adjusting shaft 43, the mating gear 45 is in a static state, meanwhile, because the mating gear 45 is always meshed with the inner gear ring 44, and the mating gear 45 is eccentrically arranged relative to the inner gear ring 44, even if the mating gear 45 is subjected to the action of external force, the positioning failure caused by rotation can not occur, so that when the adjusting shaft 43 is not rotated any more, the mating gear 45 is always protected to be static, and the backrest frame 5 can play a role in bidirectional locking and positioning. When the angle needs to be adjusted, only the adjusting rotating shaft 43 can be driven to rotate, the matching gear 45 can rotate again, and the rotation adjustment of the angle of the backrest 6 is realized; and because the matching gear 45 is always meshed with the inner gear ring 44, the rotation angle of the backrest frame 5 can be adjusted and locked at will, and the adjustment of the backrest 6 at a plurality of angles is realized.
In this embodiment, the adjusting shaft 43 is provided with an eccentric cam 431 for eccentrically connecting the mating gear 45, and the eccentric cam 431 and the adjusting shaft 43 are integrally formed, so as to improve the quality of the combination between the eccentric cam 431 and the adjusting shaft 43; the lower ends of the matching gear 45 and the movable piece 42 are respectively provided with a cam matching hole, and the eccentric cam 431 is matched in the cam matching holes of the matching gear 45 and the movable piece 42, so that eccentric connection between the adjusting rotating shaft 43 and the matching gear 45 is realized.
In this embodiment, since stepless rotation adjustment of the backrest 6 can be achieved, there is a possibility that some students excessively adjust the angle of the backrest 6, in order to avoid such a problem, a rotation limiting opening communicating with the movable space 411 is provided at an upper portion of the rear end of the fixing member 41, a minimum angle limiting portion 412 and a maximum angle limiting portion 413 are provided at two ends of the rotation limiting opening, a lower end of the movable member 42 is engaged in the movable space 411, and an upper end of the movable member 42 extends out from the rotation limiting opening, and the movable member 42 can rotate in the rotation limiting opening. When the movable piece 42 abuts against the minimum angle limiting part 412, the backrest 6 cannot continuously turn upwards and forwards, and at the moment, the included angle between the backrest 6 and the seat 3 is minimum; when the movable member 42 abuts against the maximum angle limiting portion 413, the backrest 6 cannot be turned downward and backward, and the included angle between the backrest 6 and the seat 3 is the largest.
In this embodiment, in order to improve the moving quality of the moving member 42 in the moving space 411 and adjust the balance between the two ends of the rotating shaft 43, a second rotating seat 47 is disposed on the side of the ring gear 44 away from the fixed member 41, and the lower end of the moving member 42 is located between the first rotating seat 46 and the second rotating seat 47, so as to limit the moving member 42 from being separated from the moving space 411 along the left-right direction. In this embodiment, the ring gear 44, the first rotary seat 46 and the second rotary seat 47 are fixed to one side of the rear end of the fixing member 41 by using first bolts or first rivets 47, and preferably are riveted to the fixing member 41 by using first rivets 47. In addition, the first rotating seat 46 and the second rotating seat 47 are provided with rotation matching through holes for the adjusting rotating shaft 43 to pass through, so that the adjusting rotating shaft 43 is rotatably arranged on the first rotating seat 46 and the second rotating seat 47.
As a preferred embodiment, an outer cover 48 is provided on the side of the first rotary seat 46 away from the movable member 42 and on the side of the second rotary seat 47 away from the movable member 42, the outer cover 48 is fixed on the first rotary seat 46 and the second rotary seat 47 by using a second bolt 49, and the outer cover 48 is used for shielding the parts of the backrest adjusting means 4 exposed outside the first rotary seat 46 as much as possible, so as to reduce the probability of the students damaging the parts of the backrest adjusting means 4 due to curiosity or carelessness.
As a preferred embodiment, two backrest adjusting devices 4 are connected with each other by adopting a synchronous connecting rod 10, so that when the adjusting rotating shaft 43 of one backrest adjusting device 4 is rotated, the synchronous connecting rod 10 can be utilized to link the adjusting rotating shaft 43 of the other backrest adjusting device 4 to synchronously rotate, thereby facilitating the synchronous control of the two backrest adjusting devices 4 by a user. In this embodiment, a driving member 9 for driving the adjusting shaft 43 to rotate is disposed on the adjusting shaft 43 of one backrest adjusting device 4, and the driving member 9 adopts an adjusting handle/wheel, so that the user rotates the adjusting shaft 43 through the adjusting handle/wheel to adjust the angle of the backrest 6.
As a preferred embodiment, the seat frame 2 is made of metal tubes, the seat frame 2 includes two seat side bars 21 disposed in a left-right distribution manner, and two seat cross bars 22 disposed between the two seat side bars 21, and left and right ends of the seat cross bars 22 are respectively fixed on the two seat side bars 21. The two backrest adjusting means 4 are respectively fixed on the two seat side bars 21, specifically, the fixing members 41 of the two backrest adjusting means 4 are respectively fixed on the two seat side bars 21 by adopting a third bolt or welding mode.
As a preferred embodiment, the seat frame 2 is connected with a leg rest mechanism 7 for supporting legs, the leg rest mechanism 7 is foldably provided at the bottom of the seat frame 2, and the leg rest mechanism 7 is referred to in chinese patent CN217959243U, so that a specific description thereof will not be given.
As a preferred embodiment, the seat frame 2 is arranged on the bottom frame 1 in a height adjustable way due to different heights of students, and the height position of the seat frame 2 is adjusted, so that the tablet chair can be used for students with different heights. Further, the upper portion of the underframe 1 is provided with a supporting leg 12, the bottom of the seat frame 2 is provided with a connecting leg 23, the connecting leg 23 is fixed at the bottom of the seat side rod 21, the connecting leg 23 is connected with the seat side rod 21 in a T-shaped manner, the connecting leg 23 is slidably connected to the supporting leg 12, and a height locking structure for locking the height position of the connecting leg 23 is arranged between the supporting leg 12 and the connecting leg 23.
In this embodiment, the lower portion of the connecting leg 23 is slidably inserted into the supporting leg 12 from top to bottom, a height locking hole is formed in the supporting leg 12, a lock hole array is formed in the connecting leg 23, the lock hole array includes a plurality of matching lock holes 231 arranged from top to bottom at intervals, the height locking structure includes a height locking latch 15, and one end of the height locking latch 15 is movably inserted into the height locking hole and one of the matching lock holes 231, so that the relative position between the connecting leg 23 and the supporting leg 12 is locked, and locking of the height position of the connecting leg 23 is achieved.
In this embodiment, the chassis 1 is made of metal pipes, the chassis 1 includes two bottom rods 11 distributed left and right, each bottom rod 11 is provided with one supporting leg 12 on the upper portion, the bottom rods 11 are connected with the supporting legs 12 in an inverted-t shape, and reinforcing cross rods 13 are arranged between the two supporting legs 12 to enhance the structural stability of the two supporting legs 12. The underframe 1 is provided with foot pads 14 for contacting with the ground, at least one foot pad 14 is arranged at the front end and the rear end of each bottom rod 11, and the foot pads 14 are connected with the bottom rods 11 by bolts.
As a preferred embodiment, the backrest frame 5 is provided with a headrest mechanism 8, the headrest mechanism 8 is used for supporting the head of a user, and the headrest mechanism 8 is mounted on the backrest frame 5 in a height-adjustable manner so as to be suitable for different users. Further, the headrest mechanism 8 comprises a headrest support 81 and a headrest 82 arranged on the top of the headrest support 81, a height lifting guide hole is formed in the backrest frame 5, the lower end of the headrest support 81 is inserted into the height lifting guide hole in a sliding manner, and a headrest height locking structure for locking the height position of the headrest support 81 is arranged on the backrest frame 5. Still further, the headrest support 81 is provided with a headrest Gao Duka groove 811 arranged from top to bottom, a fitting installation groove 51 is provided in the height lifting guide hole, the headrest height locking structure is provided in the fitting installation groove 51, the headrest height locking structure comprises a headrest height locking piece 83 movably provided in the fitting installation groove 51, the headrest height locking piece 83 is driven to extend out of the fitting installation groove 51, one end of the height locking piece 83 is connected with the headrest height locking piece 83, the other end is connected with the groove wall of the fitting installation groove 51, a headrest height clamping block 831 for clamping in the headrest height clamping groove 811 is provided on the headrest height locking piece 83, the headrest height locking piece 83 is driven to extend out of the fitting installation groove 51, and the headrest height clamping block 831 is clamped into the headrest height clamping groove 811, so that the height of the headrest support 81 is locked.
As a preferred embodiment, the top of the headrest support 81 is hinged with a movable connecting seat 85, the headrest 82 is connected to the movable connecting seat 85, and a headrest angle locking structure is arranged between the movable connecting seat 85 and the headrest support 81. The movable connecting seat 85 is provided with a headrest hinge part 851, the top of the headrest support 81 is provided with two headrest hinge arms which are respectively hinged with the left end and the right end of the headrest hinge part 851, the headrest hinge part 851 and the headrest hinge arms are hinged by adopting a hinge shaft 20, the outer wall surface of the headrest hinge part 851 is provided with a plurality of headrest angle clamping grooves 852 which are arranged along the circumferential direction, the front side of the upper end of the headrest support 81 is internally provided with a second mounting groove 812, a headrest angle locking structure is arranged in the second mounting groove 812, the headrest angle locking structure comprises a headrest angle locking block 86 which is movably arranged in the second mounting groove 812, a headrest angle locking spring 87 which drives the headrest angle locking block 86 to extend out of the second mounting groove 812, one end of the headrest angle locking spring 87 is connected with the headrest angle locking block 86, the other end of the headrest angle locking spring 87 is connected with the groove wall of the second mounting groove 812, and the headrest angle locking block 86 is provided with an angle clamping block 861 which is used for clamping in the headrest angle clamping groove 852, and the headrest angle locking block 87 drives the angle locking block 86 to extend out of the second mounting groove 812, so that the headrest angle locking block 86 is locked into the headrest angle clamping groove 852.
The foregoing is only a preferred embodiment of the present utility model, and all technical solutions for achieving the object of the present utility model by substantially the same means are included in the scope of the present utility model.
Claims (10)
1. The utility model provides a folding noon break tablet chair, includes chassis (1), locates seat frame (2) on chassis (1), locates seat frame (3) on seat frame (2) upper portion, connects back frame (5) at seat frame (2) rear end, locates back (6) of back frame (5) front end, its characterized in that through back adjusting device (4): the backrest adjusting device (4) comprises a fixed part (41), a movable part (42), an adjusting rotating shaft (43), an annular gear (44) and a matched gear (45);
the front end of the fixed piece (41) is connected to the seat frame (2), the rear end of the fixed piece is provided with a movable space (411), the upper end of the movable piece (42) is connected with the backrest frame (5), and the lower end of the movable piece is rotatably matched in the movable space (411);
the inner gear ring (44) is fixed on one side of the rear end of the fixing piece (41), a first rotating seat (46) is arranged on one side, away from the inner gear ring (44), of the fixing piece (41), and the adjusting rotating shaft (43) is rotatably arranged on the first rotating seat (46);
the matching gear (45) is fixed at the lower end of the movable piece (42), the matching gear (45) is movably arranged in the inner ring of the inner gear ring (44), the matching gear (45) is eccentrically connected with the adjusting rotating shaft (43), and the matching gear (45) and the inner gear ring (44) are always in partial meshing.
2. The folding noon break tablet chair of claim 1 wherein: an eccentric cam (431) for eccentrically connecting the matching gear (45) is arranged on the adjusting rotating shaft (43), a cam matching hole is formed in the lower end of the matching gear (45), and the eccentric cam (431) is matched in the cam matching hole.
3. The folding noon break tablet chair of claim 1 wherein: the inner gear ring (44) is provided with a second rotating seat (47) on one side far away from the fixed piece (41), the lower end of the movable piece (42) is located between the first rotating seat (46) and the second rotating seat (47), and the adjusting rotating shaft (43) is rotatably arranged on the first rotating seat (46) and the second rotating seat (47).
4. The folding noon break tablet chair of claim 1 wherein: the two backrest adjusting devices (4) are connected by adopting a synchronous connecting rod (10) between the adjusting rotating shafts (43) of the two backrest adjusting devices (4).
5. A folding noon break tablet according to any one of claims 1-4 characterized in that: one of the backrest adjusting means (4) is provided with a driving member (9) on an adjusting shaft (43) for driving the adjusting shaft (43) to rotate for a user.
6. A folding noon break tablet according to any one of claims 1-4 characterized in that: the leg support mechanism (7) for supporting legs is connected to the seat frame (2), and the leg support mechanism (7) is arranged at the bottom of the seat frame (2) in a foldable mode.
7. A folding noon break tablet according to any one of claims 1-4 characterized in that: the seat frame (2) is arranged on the underframe (1) in a height-adjustable way.
8. A folding noon break tablet according to any one of claims 1-4 characterized in that: the backrest frame (5) is provided with a headrest mechanism (8), and the headrest mechanism (8) is mounted on the backrest frame (5) in a height-adjustable manner.
9. The folding noon break tablet of claim 8 wherein: the headrest mechanism (8) comprises a headrest support (81) and a headrest (82) arranged on the top of the headrest support (81), a height lifting guide hole is formed in the backrest frame (5), the lower end of the headrest support (81) is inserted into the height lifting guide hole in a sliding mode, and a headrest height locking structure for locking the height position of the headrest support (81) is arranged on the backrest frame (5).
10. The folding noon break tablet of claim 9 wherein: the top of the headrest support (81) is hinged with a movable connecting seat (85), the headrest (82) is connected to the movable connecting seat (85), and a headrest angle locking structure is arranged between the movable connecting seat (85) and the headrest support (81).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320651529.4U CN219556741U (en) | 2023-03-28 | 2023-03-28 | Folding noon break tablet chair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320651529.4U CN219556741U (en) | 2023-03-28 | 2023-03-28 | Folding noon break tablet chair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219556741U true CN219556741U (en) | 2023-08-22 |
Family
ID=87662504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320651529.4U Active CN219556741U (en) | 2023-03-28 | 2023-03-28 | Folding noon break tablet chair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219556741U (en) |
-
2023
- 2023-03-28 CN CN202320651529.4U patent/CN219556741U/en active Active
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