A one-way door

Abstract

A one-way passage door comprises a door frame, wherein a revolving door body and a one-way door body are assembled in the door frame. The linkage mechanism is connected to a clutch assembly, and the clutch assembly is connected to a reduction motor. The rotating shaft of the revolving door body is connected to a sensing assembly. The sensing assembly comprises a sensing seat, a connecting shaft and a stop block, wherein the sensing seat is fixedly assembled with the rotating shaft, and the connecting shaft is connected to the linkage mechanism. An assembly groove is provided in the sensing seat, and the assembly groove is ringed with a plurality of ratchet grooves. One end of the stop block is rotatably assembled on the connecting shaft, and the other end of the stop block is abutted in the ratchet groove. A limit block is provided on one side of the stop block to limit the rotation of the stop block on the connecting shaft, and a sensing member is provided on the side of the limit block facing the stop block. Compared with the prior art, the present invention can facilitate pedestrians to push the revolving door body, and effectively avoid the problem of pedestrians pushing the revolving door body causing internal damage to the reduction motor, avoid excessive energy consumption of the reduction motor due to long-term operation, and save energy and protect the environment.

Description

Technical Field

[0001] The invention belongs to the field of revolving doors, and in particular relates to a one-way passage door. Background Art

[0002] In high-traffic areas such as public buildings, commercial centers, and large office spaces, revolving doors are often used as entrances and exits to effectively manage and control the flow of people. These doors not only isolate the outside environment, maintaining indoor temperature and cleanliness, but also provide a degree of security. Traditional revolving doors are typically designed for two-way passage, allowing people to enter and exit freely in both directions. However, in certain specific locations, such as stations, revolving doors also require one-way passage to prevent passengers from passing items without security checks.

[0003] Currently, the drive mechanism of a one-way door primarily consists of a motor, a reducer, and a gear transmission structure. The motor drives the revolving door through the reducer and gear transmission structure. This structure presents a problem: in situations such as power outages, when pedestrians need to push the revolving door, due to the limited transmission ratio of the transmission structure, pedestrians need to apply a significant amount of force to the revolving door to rotate, causing significant inconvenience. Furthermore, due to the small size of the gears within the reducer, the force transmitted to the reducer when a pedestrian pushes the revolving door can easily damage the gears. This not only increases maintenance costs but also shortens the lifespan of the revolving door. Consequently, traditional revolving doors place high demands on the reducer, increasing their manufacturing costs. Furthermore, since one-way doors are often installed in all-weather locations such as stations, the reduction motor operates for extended periods, consuming significant energy. This leaves significant room for improvement in energy efficiency. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention is solved through the following technical solutions.

[0005] A one-way door comprises a door frame, within which a revolving door body and a one-way door body are mounted. The portion of the door frame where the revolving door body is mounted is cylindrical, and the door frame is provided with an entrance and an exit on the front and rear sides of the revolving door body, respectively. The space within the door frame is divided into a pass zone and a reverse zone, with the entrance, the center of the revolving door body, and the exit serving as dividing lines. The one-way door body is located on the reverse side of the reverse zone, and the revolving door body and the one-way door body are connected by a linkage mechanism.

[0006] The linkage mechanism is connected to a clutch assembly, which is connected to a reduction motor. The revolving door body includes a rotating shaft and a plurality of door panels distributed around the rotating shaft. The rotating shaft is connected to a sensing assembly, which is connected to the linkage mechanism.

[0007] The sensing assembly includes a sensing seat, a connecting shaft and a stop block. The sensing seat is fixedly assembled with the rotating shaft, and the connecting shaft is connected to the linkage mechanism. An assembly groove is provided in the sensing seat, and the assembly groove is ringed with a plurality of ratchet grooves. One end of the stop block is rotatably assembled on the connecting shaft, and the other end of the stop block is abutted in the ratchet groove. A limit block is provided on one side of the stop block to limit the rotation of the stop block on the connecting shaft, and a sensing member is provided on the side of the limit block facing the stop block. When the one-way rotating door is operating normally, when the connecting shaft is used as power input, the stop block abuts in the ratchet groove to drive the sensing seat to rotate, and the limit block abuts on the back of the stop block. When the sensing seat is used as power input, the stop block rotates and cannot drive the connecting shaft to rotate, and the limit block is disengaged from the stop block.

[0008] Preferably, the clutch assembly includes a reduction motor, the output shaft of the reduction motor is connected to an electromagnetic clutch, the electromagnetic clutch is connected to a clutch shaft, a drive gear is mounted on the clutch shaft, and the linkage mechanism includes a third gear meshing with the drive gear.

[0009] Preferably, the clutch assembly includes a fixed beam and a guide rail mounted on the gantry, the guide rail being mounted with a clutch seat, and the reduction motor being mounted on the clutch seat. An electric push rod and a return spring are mounted between the clutch seat and the fixed beam. The output shaft of the reduction motor is mounted with a drive gear, and the linkage mechanism includes a third gear meshing with the drive gear. Both the third gear and the drive gear are spur gears.

[0010] Preferably, the linkage mechanism includes a first gear and a second gear that mesh with each other, the first gear being coaxially mounted with the rotating shaft of the revolving door body, and the second and third gears being mounted on an intermediate shaft. The intermediate shaft is also equipped with a connecting rod seat, on which a first connecting rod is mounted, the first connecting rod being connected to a second connecting rod, the second connecting rod being connected to a slide, and the slide being connected to the one-way door body. The door frame is provided with a limiting slideway for the slideway between the rotating shafts of the one-way door body and the revolving door body. With this structural design, the rotation of the revolving door body can be converted into linear movement of the slideway within the limiting slideway.

[0011] Preferably, the one-way door body includes a rolling door shaft, on which a rolling curtain is mounted. The rolling curtain's head end, which is used for pulling, is equipped with a door head plate, which is connected to the sliding seat. The door head plate vertically covers the rolling curtain's head end, which is used for pulling, to ensure that the upper and lower sides of the rolling curtain's head end can move synchronously.

[0012] Preferably, the left and right sides of the portion of the door frame where the revolving door is mounted are fitted with transparent interior panels, allowing light from the outside to pass through the panels, providing ample light inside the revolving door and making it comfortable for pedestrians entering the revolving door. The interior panels are arc-shaped to fit the revolving door, and the interior panels, in conjunction with the door panel, can isolate the entrance and exit, eliminating any gaps that could facilitate the passing of items.

[0013] Preferably, a rotatable door shaft is provided on one side of the interior trim panel, and the door shaft is assembled and connected to the door frame, and a fixing part for assembling with the door frame is provided on the other side of the interior trim panel.

[0014] Preferably, the door panel comprises a door frame made of aluminum profiles, and a glass plate is installed in the door frame, so that the interior of the revolving door is bright and well-lit, avoiding the discomfort of darkness and cramped space.

[0015] Preferably, the glass sheet is laminated glass. Even if the glass breaks, the fragments will stick to the film, and the broken glass surface will remain clean and smooth. This effectively prevents puncture injuries and penetrating falls from the glass, ensuring personal safety.

[0016] Preferably, the door frame and the rotating shaft are assembled and connected via several movable components. These movable components include a hinge, a movable part, and a fastener. The hinge is located on one side of the door frame and connects the rotating shaft and the door frame, while the movable part is located on the other side of the door frame. The rotating shaft is provided with fastening holes, and the movable part is provided with assembly holes corresponding to the fastening holes. The fasteners secure the door frame by engaging with the assembly holes and fastening holes.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. It is convenient for pedestrians to push the revolving door body, and effectively avoids the problem of pedestrians pushing the revolving door body causing internal damage to the reduction motor.

[0019] 2. Use manpower to push the revolving door body as a starting signal to start the reduction motor, avoiding excessive energy consumption of the reduction motor during long-term operation, saving energy and protecting the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The following is a description of the symbols in the drawings of the specification:

[0021] Figure 1 It is a three-dimensional schematic diagram of a one-way door.

[0022] Figure 2 A three-dimensional schematic diagram of the assembly of the revolving door body, linkage mechanism and one-way door body.

[0023] Figure 3 for Figure 2 A partial enlarged view of point A in the middle.

[0024] Figure 4 This is a partial enlarged view of the assembly of the clutch assembly and the rotating door body in another embodiment.

[0025] Figure 5 A partial enlarged view of the sensor component and revolving door assembly.

[0026] Figure 6 A partially enlarged view showing the internal structure of the sensing component.

[0027] Figure 7 This is a planar structural diagram of the sensing component.

[0028] Figure 8 This is a top view schematic diagram of the revolving door body, one-way door, and linkage mechanism.

[0029] Figure 9 This is a top view of the structure of a one-way door in an emergency escape state.

[0030] The following is a description of the symbols in the drawings of the specification:

[0031] 10. Door frame; 11. Interior trim panel; 12. Door shaft; 13. Fixing parts;

[0032] 20. Revolving door body; 21. Rotating axis; 22. Door panel; 23. Door frame; 24. Glass panel;

[0033] 30. One-way door; 31. Rolling door shaft; 32. Rolling curtain; 33. Door headboard;

[0034] 40. Linkage mechanism; 41. First gear; 42. Second gear; 43. Connecting rod seat; 44. First connecting rod; 45. Second connecting rod; 46. Slide seat; 47. Limiting slideway; 48. Third gear;

[0035] 50. Reducer motor; 51. Electromagnetic clutch; 52. Clutch shaft; 53. Drive gear; 54. Clutch seat; 55. Fixed beam; 56. Guide rail; 57. Electric push rod; 58. Return spring;

[0036] 60. Induction assembly; 61. Induction seat; 62. Connecting shaft; 63. Stop block; 64. Ratchet groove; 65. Limit block;

[0037] 70. Movable assembly; 71. Hinge; 72. Movable part; 73. Fastener. DETAILED DESCRIPTION

[0038] The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0039] In the following embodiments, the same or similar numbers throughout represent the same or similar components or components with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be understood as limiting the present invention.

[0040] In the description of the present invention, it should be understood that the terms: center, longitudinal, transverse, length, width, thickness, up, down, front, back, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and therefore cannot be understood as limiting the present invention. In addition, the terms: first, second, etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features shown. In the description of the present invention, unless otherwise clearly specified and limited, the terms: install, connect, connect, etc. should be understood in a broad sense, and ordinary technicians in this field can understand the specific meaning of the above terms in this practical application according to the specific circumstances.

[0041] refer to Figures 1 to 9 A one-way passage door comprises a door frame 10, in which a revolving door body 20 and a one-way door body 30 are assembled. The revolving door body 20 comprises a rotating shaft 21 and a plurality of door panels 22 distributed around the rotating shaft 21. The one-way door body 30 comprises a rolling door shaft 31, on which a rolling curtain 32 is mounted. The head end of the rolling curtain 32 for pulling is equipped with a door head plate 33, and the door head plate 33 is connected to a sliding seat 46. The door head plate 33 covers the head end of the rolling curtain 32 for pulling in the vertical direction to ensure that the upper and lower sides of the head end of the rolling curtain 32 can move synchronously. The part of the door frame 10 where the revolving door body 20 is assembled is cylindrical, and the door frame 10 is provided with an entrance and an exit on the front and rear sides of the revolving door body 20, respectively. The space area inside the door frame 10 is divided into a passage area and a reverse area with the entrance, the center of the revolving door body 20 and the exit as dividing lines. The one-way door body 30 is located on one side of the reverse area, and the revolving door body 20 and the one-way door body 30 are connected by a linkage mechanism 40.

[0042] The linkage mechanism 40 is connected to a clutch assembly, and the clutch assembly is connected to a reduction motor 50. The rotating shaft 21 is connected to a sensing assembly 60, and the sensing assembly 60 is connected to the linkage mechanism 40. The reduction motor 50 drives the revolving door body 20 to rotate, and the rotation of the revolving door body 20 can drive the one-way door body 30 to move through the linkage mechanism 40. When the one-way door body 30 is closed, it can block the exit or entrance on the side of the reverse area. The function of the clutch assembly is that when there is a power outage or a failure of the reduction motor 50, pedestrians can use a smaller thrust to manually push the revolving door body 20 to rotate. At this time, the clutch assembly disconnects the reduction motor 50 and the linkage mechanism 40 to protect the reduction motor 50 and avoid internal damage to the reduction motor 50.

[0043] Furthermore, the present invention is equipped with an induction component 60, which can use human power to push the revolving door body 20 as a starting signal to start the reduction motor 50, thereby avoiding excessive energy consumption of the reduction motor 50 during long-term operation, thereby saving energy and protecting the environment. Figures 5 to 7 The sensing assembly 60 includes a sensing base 61, a connecting shaft 62, and a stopper 63. The sensing base 61 is fixedly assembled with the rotating shaft 21, and the connecting shaft 62 is connected to the linkage mechanism 40. An assembly groove is provided in the sensing base 61, and a plurality of ratchet grooves 64 are provided around the assembly groove. One end of the stopper 63 is rotatably assembled on the connecting shaft 62, and the other end of the stopper 63 is abutted in the ratchet groove 64. A limit block 65 is provided on one side of the connecting shaft 62 to limit the rotation of the stopper 63, and a sensing element is provided on the side of the limit block 65 facing the stopper 63. When the one-way rotating door is operating normally, when the connecting shaft 62 is used as power input, the stopper 63 is abutted in the ratchet groove 64 to drive the sensing base 61 to rotate, and the limit block 65 is abutted on the back of the stopper 63. When the sensing base 61 is used as power input, the stopper 63 rotates and cannot drive the connecting shaft 62 to rotate, and the limit block 65 is disengaged from the stopper 63.

[0044] Specifically, the one-way passage door operates on the following principle when activated by the sensing assembly 60: In the default stop state, the stop block 63 abuts against the limit block 65, and the reduction motor 50 is in the power-off state. During normal use, the revolving door body 20 rotates clockwise (when viewed from above). When passing through, a pedestrian gently pushes the revolving door body 20, causing it to rotate clockwise to a certain extent. This rotation of the revolving door body 20 drives the sensing base 61 to rotate, which in turn drives the stop block 63 located in the ratchet groove 64 to rotate. At this time, the stop block 63 rotates counterclockwise relative to the sensing base 61, and the limit block 65 disengages from the stop block 63. The sensing element sends a signal, and the reduction motor 50 starts, driving the connecting shaft 62 to rotate clockwise via the linkage mechanism 40. At this time, the stop block 63 rotates clockwise relative to the sensing base 61, and the stop block 63 abuts the ratchet groove 64. With the help of the limit block, it drives the sensing base 61 to rotate clockwise. The rotation of the sensing base 61 drives the revolving door body 20 to rotate. Compared with the conventional one-way revolving door in which the revolving door body 20 is driven by the reduction motor 50 for a long time, the present invention has low energy consumption and is more energy-saving and environmentally friendly.

[0045] As a preferred embodiment of the present invention, refer to Figure 3 The clutch assembly includes a reduction motor 50, the output shaft of which is connected to an electromagnetic clutch 51, which is connected to a clutch shaft 52. A drive gear 53 is mounted on the clutch shaft 52. The linkage mechanism 40 includes a third gear 48 meshing with the drive gear 53. In the event of a power outage or a malfunction of the reduction motor 50, the electromagnetic clutch 51 disconnects the reduction motor 50 from the clutch shaft 52 to protect the reduction motor 50.

[0046] As another preferred embodiment of the present invention, refer to Figure 4 The clutch assembly includes a fixed beam 55 and a guide rail 56 mounted on the gantry 10. A clutch seat 54 is mounted on the guide rail 56. A reduction motor 50 is mounted on the clutch seat 54. An electric push rod 57 and a return spring 58 are installed between the clutch seat 54 and the fixed beam 55. The output shaft of the reduction motor 50 is mounted on a drive gear 53. The linkage mechanism 40 includes a third gear 48 meshing with the drive gear 53. Both the third gear 48 and the drive gear 53 are spur gears. In the event of a power outage or a malfunction of the reduction motor 50, the electric push rod 57 drives the reduction motor 50 backward, disengaging the drive gear 53 from the third gear 48 to protect the reduction motor 50.

[0047] In the present invention, the linkage mechanism 40 includes a first gear 41 and a second gear 42 that mesh with each other. The first gear 41 is coaxially mounted with the rotating shaft 21 of the revolving door body 20, and the second gear 42 and the third gear 48 are mounted on an intermediate shaft. The intermediate shaft is also equipped with a connecting rod seat 43, on which a first connecting rod 44 is mounted. The first connecting rod 44 is connected to a second connecting rod 45, and the second connecting rod 45 is connected to a slide 46, which is connected to the one-way door body 30. The door frame 10 is provided with a limiting slide 47 for the slide 46 to slide between the one-way door body 30 and the rotating shaft 21 of the revolving door body 20. With this structural design, the rotation of the revolving door body 20 can be converted into linear movement of the slide 46 within the limiting slide 47.

[0048] Furthermore, the left and right sides of the portion of the door frame 10 where the revolving door body 20 is assembled are equipped with interior panels 11 made of transparent material, so that external light can pass through the interior panels 11, allowing the revolving door to be well-lit, making pedestrians entering the revolving door feel comfortable. The interior panels 11 are arc-shaped to adapt to the revolving door body 20. The interior panels 11 and the door panels 22 cooperate to isolate the entrance and exit, avoiding leaving gaps for convenient delivery of items. The door panel 22 includes a door frame 23 made of aluminum profiles, and a glass panel 24 is assembled in the door frame 23. This makes the interior of the revolving door bright and well-lit, avoiding the uncomfortable feeling of darkness and crampedness. The glass panel 24 is laminated glass. Even if the glass breaks, the fragments will stick to the film, and the broken glass surface will remain clean and smooth. It effectively prevents punctures and penetrating falls from fragments, ensuring personal safety.

[0049] The present invention is also designed with an emergency escape function, which can improve the passing efficiency of the one-way revolving door when emergency evacuation of people is required. Figure 9 A rotatable door shaft 12 is provided on one side of the interior panel 11, and the door shaft 12 is assembled and connected to the door frame 10. A fixing part 13 for assembling with the door frame 10 is provided on the other side of the interior panel 11. This design can open the interior panel 11, so that the entrance and exit of the one-way rotating door are expanded, which is convenient for pedestrians to pass through. The door frame 23 and the rotating shaft 21 are assembled and connected by several movable components 70. The movable components 70 include a hinge part 71, a movable part 72 and a fastener 73. The hinge part 71 is located on one side of the door frame 23 and connects the rotating shaft 21 and the door frame 23. The movable part 72 is located on the other side of the door frame 23. A fastening hole is provided on the rotating shaft 21, and an assembly hole corresponding to the fastening hole is provided on the movable part 72. The fastener 73 fixes the door frame 23 by connecting with the assembly hole and the fastening hole. After removing the fastener 73, the door panel 22 can be rotated, which is convenient for pedestrians to pass through.

[0050] The protection scope of the present invention includes but is not limited to the above embodiments. The protection scope of the present invention is based on the claims. Any replacement, deformation, and improvement of the technology that can be easily thought of by those skilled in the art fall within the protection scope of the present invention.

Claims

1. A one-way passage door, comprising a door frame (10), wherein a revolving door body (20) and a one-way door body (30) are assembled in the door frame (10), wherein the portion of the door frame (10) where the revolving door body (20) is assembled is cylindrical, and the door frame (10) is provided with an entrance and an exit on the front and rear sides of the revolving door body (20), respectively; the space area in the door frame (10) is divided into a passage area and a reverse area with the entrance, the center of the revolving door body (20), and the exit as dividing lines, the one-way door body (30) being located on one side of the reverse area, and the revolving door body (20) and the one-way door body (30) being connected via a linkage mechanism (40); characterized in that, The linkage mechanism (40) is connected to a clutch assembly, and the clutch assembly is connected to a reduction motor (50); the rotating door body (20) includes a rotating shaft (21) and a plurality of door panels (22) distributed around the rotating shaft (21); the rotating shaft (21) is connected to a sensing assembly (60), and the sensing assembly (60) is connected to the linkage mechanism (40); The sensing assembly (60) includes a sensing seat (61), a connecting shaft (62) and a stopper (63), wherein the sensing seat (61) is fixedly assembled with the rotating shaft (21), and the connecting shaft (62) is connected with the linkage mechanism (40); an assembly groove is provided in the sensing seat (61), and a plurality of ratchet grooves (64) are provided around the assembly groove; one end of the stopper (63) is rotatably assembled on the connecting shaft (62), and the other end of the stopper (63) is abutted against the ratchet groove (64); the connecting shaft (62) is provided with a limiting stopper on one side of the stopper (63) A limit block (65) is provided on the side of the limit block (65) facing the block (63) when the stop block (63) rotates. When the one-way rotary door is in normal operation, when the connecting shaft (62) is used as a power input, the stop block (63) is pressed against the ratchet groove (64) to drive the induction seat (61) to rotate, and the limit block (65) is pressed against the back of the stop block (63). When the induction seat (61) is used as a power input, the stop block (63) rotates and cannot drive the connecting shaft (62) to rotate, and the limit block (65) is out of contact with the stop block (63).

2. A one-way door according to claim 1, characterized in that: The clutch assembly includes a reduction motor (50), the output shaft of the reduction motor (50) is connected to an electromagnetic clutch (51), the electromagnetic clutch (51) is connected to a clutch shaft (52), a driving gear (53) is mounted on the clutch shaft (52), and the linkage mechanism (40) includes a third gear (48) meshing with the driving gear (53).

3. The one-way door according to claim 1, characterized in that: The clutch assembly comprises a fixed beam (55) and a guide rail (56) mounted on the door frame (10); a clutch seat (54) is mounted on the guide rail (56); the reduction motor (50) is mounted on the clutch seat (54); an electric push rod (57) and a return spring (58) are mounted between the clutch seat (54) and the fixed beam (55); the output shaft of the reduction motor (50) is mounted with a driving gear (53); the linkage mechanism (40) comprises a third gear (48) meshingly connected with the driving gear (53); the third gear (48) and the driving gear (53) are both spur gears.

4. A one-way door according to claim 2 or 3, characterized in that: The linkage mechanism (40) comprises a first gear (41) and a second gear (42) meshing with each other, wherein the first gear (41) is coaxially assembled with the rotating shaft (21) of the rotating door body (20), and the second gear (42) and the third gear (48) are assembled on an intermediate shaft; the intermediate shaft is also equipped with a connecting rod seat (43), and the connecting rod seat (43) is equipped with a first connecting rod (44), the first connecting rod (44) is connected to a second connecting rod (45), and the second connecting rod (45) is connected to a sliding seat (46), and the sliding seat (46) is connected to the one-way door body (30); the door frame (10) is provided with a limiting slideway (47) for sliding the sliding seat (46) between the one-way door body (30) and the rotating shaft (21) of the rotating door body (20).

5. The one-way door according to claim 4, characterized in that: The one-way door body (30) includes a rolling door shaft (31), on which a rolling curtain (32) is mounted; a head end of the rolling curtain (32) for pulling is equipped with a door head plate (33), and the door head plate (33) is connected to a sliding seat (46); the door head plate (33) covers the head end of the rolling curtain (32) for pulling in a vertical direction.

6. The one-way door according to claim 1, characterized in that: The left and right sides of the portion of the door frame (10) where the revolving door body (20) is assembled are equipped with interior panels (11) made of a transparent material, and the interior panels (11) are in an arc shape adapted to the revolving door body (20).

7. The one-way door according to claim 6, characterized in that: A rotatable door shaft (12) is provided on one side of the interior trim panel (11), and the door shaft (12) is assembled and connected to the door frame (10). A fixing member (13) for assembling with the door frame (10) is provided on the other side of the interior trim panel (11).

8. The one-way door according to claim 1, characterized in that: The door panel (22) comprises a door frame (23) made of an aluminum profile, and a glass panel (24) is installed in the door frame (23).

9. The one-way door according to claim 8, characterized in that: The glass plate (24) is laminated glass.

10. The one-way door according to claim 8, characterized in that: The door frame (23) and the rotating shaft (21) are assembled and connected via a plurality of movable components (70); The movable assembly (70) includes a hinge (71), a movable part (72) and a fastener (73); the hinge (71) is located on one side of the door frame (23) and connects the rotating shaft (21) and the door frame (23); the movable part (72) is located on the other side of the door frame (23); a fastening hole is provided on the rotating shaft (21), and an assembly hole corresponding to the fastening hole is provided on the movable part (72); the fastener (73) fixes the door frame (23) by connecting with the assembly hole and the fastening hole.

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