CN112895857A

CN112895857A - Automobile door convenient to open during collision

Info

Publication number: CN112895857A
Application number: CN202110311814.7A
Authority: CN
Inventors: 钱芳芳
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-03-24
Filing date: 2021-03-24
Publication date: 2021-06-04

Abstract

The invention belongs to the field of automobile doors, and particularly relates to an automobile door convenient to open during collision, which comprises a door leaf, a round pin A, an inserted link, an elastic nut, a swing limiting column, a glass lifting assembly and the like, wherein two support lugs A are arranged at the side end of the door leaf, and each support lug A is hinged with a support lug B arranged on the inner wall of an automobile door frame through two round pins A which are mutually inserted; the slide bar drives the limit swing post to remove the swing restriction of the glass lifting assembly to the door leaf inside around the round pin B fast, the glass lifting assembly swings to a certain extent fast under the action of the spring D in a stretching state, the phenomenon that the door leaf is blocked with an automobile door frame due to deformation caused by collision is reduced, the automobile door can be rapidly removed from connection with an automobile body when being impacted laterally, people or rescue workers in the automobile can detach the door from the automobile body fast, the injured people in the automobile can be timely rescued, and the rescue efficiency of the injured people in traffic accidents is improved.

Description

Automobile door convenient to open during collision

Technical Field

The invention belongs to the field of automobile doors, and particularly relates to an automobile door convenient to open during collision.

Background

When the automobile is impacted laterally, the automobile door can deform inwards due to the impact, so that the automobile door is clamped in the automobile body door frame, the automobile door is opened, and injured people in the automobile are timely treated. Even if professional rescuers arrive, the vehicle door needs to be demolished by using a professional demolishing tool, so that a long time is needed, and timely rescue and treatment of people in the vehicle can be delayed.

The invention designs an automobile door convenient to open in collision, and solves the problems.

Disclosure of Invention

In order to solve the defects in the prior art, the invention discloses an automobile door convenient to open during collision, which is realized by adopting the following technical scheme.

In the description of the present invention, it should be noted that the terms "inside", "outside", "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention conventionally use, which are merely for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, or be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

An automobile door convenient to open during collision comprises a door leaf, a support lug A, a support lug B, a round pin A, an inserted rod, a spring A, a spring B, a nut, a swing limiting column, a spring C, a glass lifting assembly, a spring D and a spring E, wherein two support lugs A are installed at the side end of the door leaf, and each support lug A is hinged with a support lug B installed on the inner wall of an automobile door frame through two round pins A which are mutually inserted; the two round pins A which are mutually inserted are connected through the insertion rod inserted in the insertion holes on the round pins A; the inserted bar slides in a sliding groove A on the door leaf along the direction vertical to the central axis of the round pin A; the inserted link is provided with a spring A for resetting the inserted link; each round pin A is screwed with a nut, and the nut presses the spring B nested on the corresponding round pin A against the support lug A or the support lug B.

A glass lifting component matched with an automobile door frame is arranged in the swing groove at the upper end of the door leaf in a swinging mode around a fixed point, and a spring D for driving the glass lifting component to swing is arranged in the door leaf; the sliding groove B on the inner wall of the door leaf is internally provided with a swing limiting column for limiting the swing of the glass lifting assembly, and the swing limiting column is nested with a spring C for resetting the swing limiting column.

Two slide bars which are vertically distributed at intervals are matched in the door leaf in a sliding way along the direction vertical to the door leaf, and two springs E for resetting the slide bars are symmetrically arranged on each slide bar; the sliding rod is in transmission connection with the swing limiting column and the two inserted rods.

As a further improvement of the technology, a shaft sleeve is rotationally matched on the fixed shaft arranged in the door leaf, and a winding wheel A and a winding wheel B are arranged on the shaft sleeve; two steel wire ropes A wound on the winding wheel A in the same direction are respectively connected with the two inserting rods by winding a plurality of fixed pulleys; and a steel wire rope B wound on the winding wheel B is connected with the swing limiting column by winding around a plurality of fixed pulleys.

As a further improvement of the technology, the slide bar is U-shaped, and two ends of the slide bar respectively slide in the chutes C on the fixed frame; two guide blocks are symmetrically arranged at each end of the sliding rod and respectively slide in two guide grooves on the inner wall of the corresponding sliding groove C. The cooperation of guide block and guide way plays the positioning guide effect to the motion of slide bar in the door leaf, guarantees that the spring E in the spout C is in compression energy storage state all the time. Meanwhile, a certain gap is ensured between the slide bar and the inner wall of the outer side of the door leaf in the initial state. A winding wheel C is mounted on the shaft sleeve, four steel wire ropes C are wound on the winding wheel C in the same direction, and the four steel wire ropes C are respectively wound around a plurality of fixed pulleys and connected with a pulling block mounted on each of the two sliding rods; the pulling block moves in the sliding groove D on the inner wall of the corresponding sliding groove C.

As a further improvement of the technology, the inner wall of the sliding chute A is provided with an annular groove A, and the spring A nested on the inserted link is positioned in the annular groove A. The annular groove A provides accommodation space for the spring A, reduces the space occupied by the spring A in the inserted bar and the door leaf, effectively shortens the length of the inserted bar, and enables the structure in the door leaf to be more compact. The spring A is a compression spring; one end of the spring A is connected with the inner wall of the corresponding annular groove A, and the other end of the spring A is connected with a compression spring ring A arranged on the inserted bar; the spring B is a compression spring; one end of the spring B is in contact with the support lug A or the support lug B, and the other end of the spring B is in contact with a compression spring ring B nested on the corresponding round pin A.

As a further improvement of the technology, the inner wall of the sliding groove B is provided with a ring groove B, and a spring C nested on the swing limiting column is positioned in the ring groove B. The annular groove B provides accommodating space for the spring C, reduces the space occupied by the spring C in the swing limiting column and the door leaf, effectively shortens the length of the swing limiting column, and enables the structure in the door leaf to be more compact. The spring C is a compression spring; one end of a spring C is connected with the inner wall of the ring groove B, and the other end of the spring C is connected with a pressure spring ring C arranged on the swing limiting column; the spring D is an extension spring; spring D one end is connected with glass-frame riser subassembly, and the other end is connected with the fixed block in the installation door leaf.

As a further improvement of the technology, two springs E for resetting the slide bar are respectively positioned in the corresponding two chutes C; the spring E is a compression spring; one end of the spring E is connected with the inner wall of the corresponding chute C, and the other end of the spring E is connected with one end face of the corresponding sliding rod.

As a further improvement of the technology, a support lug C is arranged at one side end of the glass lifting assembly, and the support lug C is hinged in a swing groove of the door leaf through a round pin B; the glass lifting assembly is provided with an arc surface which takes the central axis of the round pin B as the central axis. The existence of the arc surface ensures that the glass lifting component can swing around the round pin B when the door leaf is impacted, and ensures that the swinging groove does not obstruct the swinging of the glass lifting component.

Compared with the traditional automobile door, when any position of any slide rod of the door leaf is laterally impacted outside the door leaf, the slide rod is driven to move by the door leaf which is pressed to deform inwards due to impact and drives the two inserting rods to simultaneously and quickly release the connection relation of the two corresponding round pins A which are inserted into each other in an instant manner, the two round pins A which release the connection relation are respectively and instantly bounced off the support lug A or the support lug B under the action of the corresponding spring B in a compression state, so that two hinge points between the door leaf and an automobile door frame are guaranteed to instantly release the hinge relation when the door leaf is laterally impacted, the door leaf is instantly separated from an automobile body, and people in the automobile are guaranteed to be quickly and timely rescued. Meanwhile, the limit of the glass lifting assembly to swing inwards towards the door leaf around the round pin B is quickly released by the sliding rod driving swing limiting column, the glass lifting assembly quickly swings to a certain extent under the action of the spring D in a stretching state, a large gap is formed between the upper end of the glass lifting assembly and an automobile door frame, the position of the door leaf which is blocked with the automobile door frame due to deformation caused by impact is reduced, the automobile door can be quickly disconnected with an automobile body when being impacted laterally, people or rescue workers in the automobile can conveniently detach the door from the automobile body quickly, injured people in the automobile can be timely rescued, and the rescue efficiency of the injured people in traffic accidents is improved. The invention has simple structure and better use effect.

Drawings

FIG. 1 is a schematic view of the window lift assembly, door and lug B in combination.

Fig. 2 is a schematic overall cross-sectional view from two perspectives of the present invention.

FIG. 3 is a schematic cross-sectional view of the fixed shaft, the shaft sleeve, the winding wheel A, the winding wheel B and the winding wheel C.

FIG. 4 is a schematic cross-sectional view of a tilt column in cooperation with a window lift assembly from two viewing angles.

FIG. 5 is a schematic cross-sectional view of the vehicle door, the slide bar and the fixing frame.

Fig. 6 is a schematic cross-sectional view of the slide bar and the fixing frame in two different views.

FIG. 7 is a cross-sectional view of the lug A, the lug B, the round pin A and the insertion rod.

FIG. 8 is a schematic partial cross-sectional view of a vehicle door and two views thereof.

Fig. 9 is a schematic view of the fitting of two round pins a.

Fig. 10 is a sectional view of the fixing frame and its structure.

FIG. 11 is a schematic view of a glass lift assembly.

Number designation in the figures: 1. a door leaf; 2. a swinging groove; 3. a chute A; 4. a ring groove A; 5. a chute B; 6. a ring groove B; 7. a lug A; 8. a lug B; 9. a round pin A; 10. a jack; 11. inserting a rod; 12. a spring A; 13. a compression spring ring A; 14. a spring B; 15. a compression spring ring B; 16. a nut; 17. a steel wire rope A; 18. a fixed pulley; 19. a winding wheel A; 20. a shaft sleeve; 21. a fixed shaft; 22. a winding wheel B; 23. a winding wheel C; 24. a steel wire rope B; 25. a swing limiting column; 26. a spring C; 27. a compression spring ring C; 28. a glass lifting assembly; 29. a lug C; 30. a round pin B; 31. a spring D; 32. a fixed block; 33. a wire rope C; 34. a fixed mount; 35. a chute C; 36. a guide groove; 37. a chute D; 38. a slide bar; 39. a guide block; 40. a spring E; 41. pulling the block; 42. a circular arc surface.

Detailed Description

The drawings are schematic illustrations of the implementation of the present invention to facilitate understanding of the principles of structural operation. The specific product structure and the proportional size are determined according to the use environment and the conventional technology.

As shown in fig. 1, 4 and 5, the window regulator comprises a door leaf 1, a support lug a7, a support lug B8, a round pin a9, an inserted link 11, a spring a12, a spring B14, a nut 16, a swing limiting column 25, a spring C26, a glass lifting assembly 28, a spring D31 and a spring E40, wherein as shown in fig. 1, 7 and 9, two support lugs a7 are installed at the side end of the door leaf 1, and each support lug a7 is hinged with a support lug B8 installed on the inner wall of an automobile door frame through two round pins a9 which are inserted into each other; the two round pins A9 which are inserted into each other are connected through the insertion rod 11 inserted into the insertion hole 10 on the round pins A9; as shown in fig. 7 and 8, the inserted link 11 slides in the sliding groove A3 of the door leaf 1 in a direction perpendicular to the central axis of the round pin a 9; a spring A12 for resetting the inserted link 11 is arranged on the inserted link; each round pin a9 is screwed with a nut 16, and the nut 16 presses a spring B14 nested on the corresponding round pin a9 against the support lug a7 or the support lug B8.

As shown in fig. 2 and 8, a glass lifting assembly 28 matched with an automobile door frame is arranged in the swinging groove 2 at the upper end of the door leaf 1 in a swinging mode around a fixed point, and a spring D31 for driving the glass lifting assembly 28 to swing is arranged in the door leaf 1; as shown in fig. 4 and 8, a swing limiting column 25 for limiting the swing of the glass lifting assembly 28 slides in a sliding groove B5 on the inner wall of the door leaf 1, and a spring C26 for resetting the swing limiting column 25 is nested on the swing limiting column.

As shown in fig. 2, 5 and 6, two sliding rods 38 are slidably fitted in the door leaf 1 along a direction perpendicular to the door leaf 1, and two springs E40 for returning to each sliding rod 38 are symmetrically mounted on each sliding rod 38; the sliding rod 38 is in transmission connection with the swing limiting column 25 and the two insert rods 11.

As shown in fig. 3, a sleeve 20 is rotatably fitted on the fixed shaft 21 installed in the door leaf 1, and a winding wheel a19 and a winding wheel B22 are installed on the sleeve 20; as shown in fig. 2, 3 and 7, two steel cables a17 wound around a winding wheel a19 in the same direction are respectively connected with two insertion rods 11 by passing around a plurality of fixed pulleys 18; as shown in fig. 3 and 4, a wire rope B24 wound around a winding wheel B22 is connected to the swing post 25 via a plurality of fixed pulleys 18.

As shown in fig. 5, 6 and 10, the sliding rod 38 is U-shaped, and two ends of the sliding rod 38 respectively slide in the sliding slot C35 of the fixing frame 34; two guide blocks 39 are symmetrically installed at each end of the sliding rod 38, and the two guide blocks 39 respectively slide in the two guide grooves 36 on the inner wall of the corresponding sliding chute C35. The cooperation of the guide block 39 and the guide groove 36 plays a role in positioning and guiding the movement of the sliding rod 38 in the door leaf 1, and the spring E40 in the sliding groove C35 is always in a compressed energy storage state. At the same time, a certain gap is ensured between the sliding rod 38 and the inner wall of the outer side of the door leaf 1 in the initial state. As shown in fig. 2, 3 and 6, a winding wheel C23 is mounted on the shaft sleeve 20, four steel wire ropes C33 are wound on the winding wheel C23 in the same direction, and the four steel wire ropes C33 are respectively connected with a pulling block 41 mounted on each of the two sliding rods 38 by passing around a plurality of fixed pulleys 18; as shown in fig. 6 and 10, the pulling block 41 moves in the sliding groove D37 on the inner wall of the corresponding sliding groove C35.

As shown in fig. 7 and 8, the inner wall of the sliding groove A3 is provided with a ring groove a4, and the spring a12 nested on the inserted link 11 is located in the ring groove a 4. The annular groove A4 provides accommodation space for the spring A12, reduces the space occupied by the spring A12 in the inserted bar 11 and the door leaf 1, effectively shortens the length of the inserted bar 11, and makes the structure in the door leaf 1 more compact. The spring A12 is a compression spring; one end of the spring A12 is connected with the inner wall of the corresponding ring groove A4, and the other end is connected with a compression spring ring A13 arranged on the inserted bar 11; the spring B14 is a compression spring; spring B14 has one end in contact with lug A7 or lug B8 and the other end in contact with compression spring ring B15 nested on corresponding round pin A9.

As shown in fig. 4 and 8, the inner wall of the sliding groove B5 is formed with a ring groove B6, and the spring C26 nested on the swing-limiting post 25 is located in the ring groove B6. The ring groove B6 provides accommodation space for spring C26, reduces the space that spring C26 took up in limit swing post 25 and door leaf 1, effectively shortens limit swing post 25 length for the structure is compacter in the door leaf 1. As shown in fig. 6, spring C26 is a compression spring; one end of a spring C26 is connected with the inner wall of the ring groove B6, and the other end of the spring C26 is connected with a compression spring ring C27 arranged on the swing limiting column 25; as shown in fig. 4, spring D31 is an extension spring; one end of the spring D31 is connected to the glass-frame riser 28, and the other end is connected to the fixing block 32 installed inside the door 1.

As shown in fig. 6 and 10, the two springs E40 for returning the slide bar 38 are respectively located in the corresponding two chutes C35; the spring E40 is a compression spring; one end of the spring E40 is connected with the inner wall of the corresponding chute C35, and the other end is connected with one end face of the corresponding slide bar 38.

As shown in fig. 2 and 11, the glass-frame lifting assembly 28 has a support lug C29 at one side end thereof, the support lug C29 is hinged in the swing groove 2 of the door leaf 1 through a round pin B30; the glass lifter assembly 28 has an arc surface 42 having a central axis of the round pin B30. The existence of the arc surface 42 ensures that the glass-frame riser assembly 28 can swing around the round pin B30 when the door leaf 1 is impacted, and ensures that the swing groove 2 does not obstruct the swing of the glass-frame riser assembly 28.

The working process of the invention is as follows: in the initial state, two round pins A9 inserted into each other are connected by the inserted rod 11, two round pins A9 connected with each other hinge the corresponding support lug A7 and support lug B8, and all the springs A12 are in the compression energy storage state. Spring B14, spring C26, and spring E40 are all in a compressed charged state, and spring D31 is in an extended charged state. The steel wire rope A17, the steel wire rope B24 and the steel wire rope C33 are all in a stretched state. The swing restricting column 25 restricts the swing of the window regulator 28 into the door 1 around the round pin B30. The window lifter assembly 28 forms a complete door with the door leaf 1. The two sliding bars 38 have a small clearance from the outer side walls inside the door leaf 1, respectively.

When the door leaf 1 is impacted laterally, the door leaf 1 deforms instantly, the deformed door leaf 1 drives one of the sliding rods 38 or all the sliding rods 38 to move rapidly towards the inside of the vehicle, the sliding rod 38 pulls the corresponding steel wire rope C33 instantly through the corresponding pulling block 41, the steel wire rope C33 drives the shaft sleeve 20 to rotate rapidly through the winding wheel C23, and the shaft sleeve 20 drives the winding wheel A19 and the winding wheel B22 to rotate rapidly and synchronously.

The winding wheel A19 rapidly winds the two steel wire ropes A17 connecting the two insertion rods 11, and the winding wheel B22 rapidly winds the steel wire rope B24 connecting the swing limiting column 25.

The two inserted rods 11 are respectively pulled by the corresponding steel wire ropes A17 to quickly separate from the inserted holes 10 on the corresponding two inserted round pins A9 and instantly remove the connection of the corresponding two round pins A9, and the spring A12 nested on each inserted rod 11 is further compressed to store energy. The two round pins A9 which are inserted into each other are respectively and instantly bounced off the support lug A7 or the support lug B8 under the action of the spring B14 which is correspondingly in a compressed state, and the mutual hinged relation between the support lug A7 and the support lug B8 is instantly released, so that the hinge between the door leaf 1 and the doorframe of the car body is instantly released, the door leaf 1 can be easily separated from the car body after being deformed by lateral violent impact, and the injured person in the car can be timely rescued.

Meanwhile, the wire rope B24 quickly pulls the swing limiting column 25, the swing limiting column 25 is separated from the glass lifting assembly 28 instantly and removes the swing limitation of the glass lifting assembly 28 to the door leaf 1 around the round pin B30 instantly, the spring C26 is further compressed to store energy, the glass lifting assembly 28 swings to the door leaf 1 with a small angle rapidly under the action of the spring D31 in a stretching state, a gap is formed between the outer frame at the upper end of the glass lifting assembly 28 and the upper end of the car body door frame, the blocking part of the car door and the car body door frame due to the deformation of the car door when the car door is impacted violently in the lateral direction is reduced, the door leaf 1 can be detached from the car body in time when the car door is impacted, injured people in the car can be rescued in time, and the traffic accident rescue efficiency is improved.

In conclusion, the beneficial effects of the invention are as follows: when any position of any sliding rod 38 of the door leaf 1 is laterally impacted outside the door leaf 1, the sliding rod 38 is driven by the door leaf 1 which is pressed to be deformed inwards due to impact and drives the two inserting rods 11 to simultaneously and quickly release the connection relation of the two corresponding round pins A9 which are inserted into each other in an instant manner, the two round pins A9 which release the connection relation are respectively and instantly bounced off the support lugs A7 or the support lugs B8 under the action of the corresponding springs B14 which are in a compressed state, so that two hinge points between the door leaf 1 and an automobile door frame are ensured to instantly release the hinge relation when the door leaf 1 is laterally impacted, the door leaf 1 is instantly separated from an automobile body, and people in the automobile is ensured to be quickly and timely rescued. Meanwhile, the slide rod 38 drives the swing limiting column 25 to rapidly release the swing limitation of the glass lifting assembly 28 to the door frame 1 around the round pin B30, the glass lifting assembly 28 rapidly swings to a certain extent under the action of the spring D31 in a stretching state, so that a large gap is generated between the upper end of the glass lifting assembly 28 and the automobile door frame, the position where the door frame is clamped due to deformation caused by collision of the door frame 1 is reduced, the automobile door can be rapidly released from connection with the automobile body when being laterally collided, the automobile door can be conveniently detached from the automobile body by people in the automobile or rescue personnel, the injured people in the automobile can be timely rescued, and the rescue efficiency of the injured people in traffic accidents is improved.

Claims

1. An automobile door convenient to open during collision is characterized in that: the automobile door frame comprises a door leaf, support lugs A, support lugs B, round pins A, an inserted link, a spring A, a spring B, a nut, a swing limiting column, a spring C, a glass lifting assembly, a spring D and a spring E, wherein two support lugs A are mounted at the side end of the door leaf, and each support lug A is hinged with a support lug B mounted on the inner wall of an automobile door frame through two round pins A which are mutually inserted; the two round pins A which are mutually inserted are connected through the insertion rod inserted in the insertion holes on the round pins A; the inserted bar slides in a sliding groove A on the door leaf along the direction vertical to the central axis of the round pin A; the inserted link is provided with a spring A for resetting the inserted link; each round pin A is screwed with a nut, and the nut presses the spring B nested on the corresponding round pin A against the support lug A or the support lug B;

a glass lifting component matched with an automobile door frame is arranged in the swing groove at the upper end of the door leaf in a swinging mode around a fixed point, and a spring D for driving the glass lifting component to swing is arranged in the door leaf; a swing limiting column for limiting the swing of the glass lifting assembly slides in the sliding chute B on the inner wall of the door leaf, and a spring C for resetting the swing limiting column is nested on the swing limiting column;

2. An automobile door that facilitates opening upon impact as set forth in claim 1, wherein: the fixed shaft arranged in the door leaf is rotatably matched with a shaft sleeve, and the shaft sleeve is provided with a winding wheel A and a winding wheel B; two steel wire ropes A wound on the winding wheel A in the same direction are respectively connected with the two inserting rods by winding a plurality of fixed pulleys; and a steel wire rope B wound on the winding wheel B is connected with the swing limiting column by winding around a plurality of fixed pulleys.

3. An automobile door that facilitates opening upon impact as set forth in claim 2, wherein: the slide bar is U-shaped, and two ends of the slide bar slide in the chutes C on the fixed frame respectively; two guide blocks are symmetrically arranged at each end of the sliding rod, and the two guide blocks respectively slide in two guide grooves on the inner wall of the corresponding sliding groove C; a winding wheel C is mounted on the shaft sleeve, four steel wire ropes C are wound on the winding wheel C in the same direction, and the four steel wire ropes C are respectively wound around a plurality of fixed pulleys and connected with a pulling block mounted on each of the two sliding rods; the pulling block moves in the sliding groove D on the inner wall of the corresponding sliding groove C.

4. An automobile door that facilitates opening upon impact as set forth in claim 1, wherein: an annular groove A is formed in the inner wall of the sliding groove A, and a spring A nested on the inserted rod is located in the annular groove A; the spring A is a compression spring; one end of the spring A is connected with the inner wall of the corresponding annular groove A, and the other end of the spring A is connected with a compression spring ring A arranged on the inserted bar; the spring B is a compression spring; one end of the spring B is in contact with the support lug A or the support lug B, and the other end of the spring B is in contact with a compression spring ring B nested on the corresponding round pin A.

5. An automobile door that facilitates opening upon impact as set forth in claim 1, wherein: an annular groove B is formed in the inner wall of the sliding groove B, and a spring C nested on the swing limiting column is located in the annular groove B; the spring C is a compression spring; one end of a spring C is connected with the inner wall of the ring groove B, and the other end of the spring C is connected with a pressure spring ring C arranged on the swing limiting column; the spring D is an extension spring; spring D one end is connected with glass-frame riser subassembly, and the other end is connected with the fixed block in the installation door leaf.

6. A vehicle door for facilitating opening upon impact as claimed in claim 3, wherein: two springs E for resetting the slide bar are respectively positioned in the corresponding two chutes C; the spring E is a compression spring; one end of the spring E is connected with the inner wall of the corresponding chute C, and the other end of the spring E is connected with one end face of the corresponding sliding rod.

7. An automobile door that facilitates opening upon impact as set forth in claim 1, wherein: one side end of the glass lifting assembly is provided with a support lug C, and the support lug C is hinged in the swing groove of the door leaf through a round pin B; the glass lifting assembly is provided with an arc surface which takes the central axis of the round pin B as the central axis.