Double-motor driving structure of double-inward-swinging door of passenger car
Patent Information
- Application Number
- CN202522167600.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-14
- Publication Date
- 2026-09-18
- Estimated Expiration
- 2035-10-14
AI Technical Summary
[0003]现有客车双内摆门采用单电机驱动结构，当电机发生故障时，两扇门会同时失去动力，导致车门完全无法启闭，严重影响车辆正常运营，以及电机驱动齿轮与主轴从动齿轮啮合处缺乏持续润滑的问题，因此提出一种客车双内摆门双电机驱动结构
[0010] The beneficial effects of this utility model are as follows: Two independent motor drive structures are respectively set on the top of the main shaft of the inner swing door, realizing a "dual motor-single door" redundant configuration. When one motor fails, the other motor can independently drive the main shaft to rotate, ensuring the normal opening and closing of the door. This solves the problem of the traditional single motor failure causing complete paralysis of both doors, significantly improving the operational stability of the bus. Through the linkage design of the oil storage tank and the rotating oil discharge hopper, timed and quantitative lubrication of the gear meshing area is achieved. When the turntable rotates with the main shaft, the upper and lower oil discharge holes periodically overlap, and the lubricating oil is accurately dripped onto the gear meshing surface, reducing the friction coefficient, reducing tooth surface wear, and extending the service life of the gear set. This solves the problem that the existing double inner swing door of the bus uses a single motor drive structure, which causes both doors to lose power at the same time when the motor fails, making the doors unable to open or close at all, seriously affecting the normal operation of the vehicle, as well as the problem of lack of continuous lubrication at the meshing point of the motor drive gear and the main shaft driven gear.
Smart Images
Figure CN224770052U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of inward swing door drive structure, specifically to a dual-motor drive structure for a double inward swing door of a bus. Background Technology
[0002] The double inward swing door is a type of bus door that opens inwards. It consists of two door panels driven by a four-bar linkage mechanism. The door hinges are connected to the door body by upper and lower rotating arms. The top guide wheel slides along the guide groove or is linked to achieve smooth opening and closing. Its working principle is to drive the door hinges through the drive mechanism, so that the two door panels swing inwards synchronously.
[0003] The existing double inward swing door of the bus adopts a single motor drive structure. When the motor fails, both doors will lose power at the same time, making the doors unable to open or close at all, which seriously affects the normal operation of the vehicle. In addition, there is a problem of lack of continuous lubrication at the meshing point of the motor drive gear and the driven gear of the main shaft. Therefore, a double motor drive structure for double inward swing door of bus is proposed. Utility Model Content
[0004] To address the problems in the existing technology, this utility model provides a dual-motor drive structure for a bus with double inward swing doors.
[0005] The technical solution adopted by this utility model to solve its technical problem is a double inward swing door dual motor drive structure for a bus, including a door frame and two sets of motor drive structures, as well as an inward swing door installed in the door frame door opening. The two sets of motor drive structures are set on the top of the main shaft of the inward swing door, and the outer periphery of the motor drive structure is covered with a protective box. Both sets of motor drive structures include a motor with a brake on the output shaft and a self-lubricating drive mechanism for gear lubrication. A drive gear is installed at the bottom of the drive shaft of the motor, and a driven gear is installed on the outer periphery of the top of the main shaft of the inner swing door via a key pin. The driven gear meshes with the drive gear. The self-lubricating drive mechanism is located above the driven gear, and a support flange is connected to the top of the main shaft.
[0006] Specifically, the self-lubricating mechanism is located inside the protective box. The self-lubricating mechanism includes an oil storage tank. An installation plate is connected to the top of the oil storage tank. The top of both the installation plate and the protective box has corresponding first installation holes. The first installation holes of the installation plate and the first installation holes of the protective box are connected by bolts. An oil replenishment port is provided on one side of the top of the oil storage tank, and a protective cap is provided on the threaded cover of the oil replenishment port.
[0007] Specifically, the bottom plate of the oil storage tank has a circular positioning protrusion at its center, and the bottom plate of the oil storage tank has an upper oil drain hole through both sides. The bottom of the bottom plate of the oil storage tank is covered with a turntable, and an oil drain hopper is welded to the outer periphery of the bottom of the turntable.
[0008] Specifically, the turntable has a circular positioning socket at its center that corresponds to the circular positioning protrusion, and the circular positioning protrusion is inserted into the circular positioning socket. The turntable has lower oil drain holes on both sides, and the lower oil drain holes coincide with the upper oil drain holes, so that the lubricating oil in the oil storage tank leaks into the oil drain hopper.
[0009] Specifically, a second mounting hole corresponding to the support flange is provided at the bottom of the turntable and on the outer periphery of the circular positioning socket. The support flange is installed and fixed to the second mounting hole by bolts.
[0010] The beneficial effects of this utility model are as follows: Two independent motor drive structures are respectively set on the top of the main shaft of the inner swing door, realizing a "dual motor-single door" redundant configuration. When one motor fails, the other motor can independently drive the main shaft to rotate, ensuring the normal opening and closing of the door. This solves the problem of the traditional single motor failure causing complete paralysis of both doors, significantly improving the operational stability of the bus. Through the linkage design of the oil storage tank and the rotating oil discharge hopper, timed and quantitative lubrication of the gear meshing area is achieved. When the turntable rotates with the main shaft, the upper and lower oil discharge holes periodically overlap, and the lubricating oil is accurately dripped onto the gear meshing surface, reducing the friction coefficient, reducing tooth surface wear, and extending the service life of the gear set. This solves the problem that the existing double inner swing door of the bus uses a single motor drive structure, which causes both doors to lose power at the same time when the motor fails, making the doors unable to open or close at all, seriously affecting the normal operation of the vehicle, as well as the problem of lack of continuous lubrication at the meshing point of the motor drive gear and the main shaft driven gear. Attached Figure Description
[0011] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0012] Figure 1 This is a schematic diagram of the overall design of this utility model; Figure 2 This is a schematic diagram of the motor drive structure of this utility model; Figure 3 For the present utility model Figure 2 Enlarged view of point A in the middle; Figure 4 This is a schematic diagram of the self-lubricating drive mechanism of this utility model; Figure 5 This is an exploded view of the bottom of the self-lubricating drive mechanism of this utility model; In the diagram: door frame 1, inner swing door 11, main shaft 12, driven gear 121, support flange 122, motor drive structure 2, motor 21, drive gear 22, self-lubricating drive mechanism 23, oil storage tank 231, mounting plate 232, turntable 233, oil drain hopper 234, upper oil drain hole 235, lower oil drain hole 236, circular positioning protrusion 237, circular positioning socket 238, second mounting hole 239, first mounting hole 30, protective box 3. Detailed Implementation
[0013] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0014] like Figure 1-5 As shown, the present invention provides a dual-motor drive structure for a double inward swing door of a passenger vehicle, including a door frame 1 and two sets of motor drive structures 2, as well as an inward swing door 11 installed in the door opening of the door frame 1. The two sets of motor drive structures 2 are located on the top of the main shaft 12 of the inward swing door 11, and the outer periphery of the motor drive structure 2 is covered by a protective box 3. Both sets of motor drive structures 2 include a motor 21 with a brake on the output shaft and a drive self-lubricating mechanism 23 for gear lubrication. A drive gear 22 is installed at the bottom of the drive shaft of the motor 21. A driven gear 121 is installed on the outer periphery of the top of the main shaft 12 of the inner swing door 11 through a key pin. The driven gear 121 meshes with the drive gear 22. The drive self-lubricating mechanism 23 is located above the driven gear 121. A support flange 122 is connected to the top of the main shaft 12.
[0015] The present invention also includes a self-lubricating drive mechanism 23 located inside a protective box 3. The self-lubricating drive mechanism 23 includes an oil storage tank 231. An installation plate 232 is connected to the top of the oil storage tank 231. The top of the installation plate 232 and the protective box 3 are both provided with corresponding first installation holes 30. The first installation holes 30 of the installation plate 232 and the first installation holes 30 of the protective box 3 are connected by bolts. An oil replenishment port is provided on one side of the top of the oil storage tank 231, and a protective cap is provided on the threaded cover of the oil replenishment port.
[0016] The present invention also includes a circular positioning protrusion 237 provided at the center of the bottom plate of the oil storage tank 231, an upper oil drain hole 235 extending through both sides of the bottom plate of the oil storage tank 231, a turntable 233 covering the bottom of the bottom plate of the oil storage tank 231, and an oil drain hopper 234 welded to the outer periphery of the bottom of the turntable 233.
[0017] The present invention also includes a circular positioning socket 238 at the center of the turntable 233 corresponding to the circular positioning protrusion 237, and the circular positioning protrusion 237 is inserted into the circular positioning socket 238. The turntable 233 has lower oil drain holes 236 on both sides, and the lower oil drain holes 236 coincide with the upper oil drain holes 235, so that the lubricating oil in the oil storage tank 231 is drained into the oil drain hopper 234.
[0018] The present invention also includes a second mounting hole 239 corresponding to the support flange 122, which is provided at the bottom of the turntable 233 and on the outer periphery of the circular positioning socket 238. The support flange 122 is installed and fixed to the second mounting hole 239 by bolts.
[0019] In use, this utility model assembles two sets of motor drive structures on the door frame 1 of the double inward swing door, with the motor drive structures located above the main shaft 12 of the inward swing door 11. A driven gear 121 and a support flange 122 are sequentially installed on the main shaft 12 of the inward swing door 11. During this process, the driving gear 22 and the driven gear 121 are ensured to mesh. A protective box 3 is used to protect the motor drive structure 2, and the side of the protective box 3 closest to the door frame 1 is fixed to the door frame 1 with bolts. A shaft hole corresponding to the main shaft 12 is provided at the bottom of the protective box 3 to allow the main shaft 12 to pass through. The cover of the protective box 3 is bolted to the side away from the door frame 1. When the motor area needs to be inspected, the internal drive mechanism can be inspected and maintained by opening the cover of the protective box 3. Lubricating oil can be replenished by opening the protective cap threaded on the oil tank 231. A glass window for observing the oil level can be provided on the outer circumference of the oil tank 231. At the same time, a filter valve is provided on the top of the oil tank 231 to allow air pressure to enter the oil tank 231. During assembly, the power supply component in the bus provides power to the electrical component in this application, and the control circuit of the electrical component in this application is connected to the central control of the bus. When the inner swing door needs to be opened or closed, the motor 21 drives the drive gear 22 to rotate the driven gear 121 of the main shaft 12 clockwise or counterclockwise, so that the inner swing door 11 opens or closes based on this rotation. During the rotation of the main shaft 12, the turntable 233 will rotate in coordination with the support flange 122 on the top of the main shaft 12. The rotation of the turntable 233 will cause its lower oil drain hole 236 to coincide with the upper oil drain hole 235 of the oil tank 231, causing the lubricating oil in the oil tank 231 to leak out. In the oil discharge hopper 234, a sealing ring is provided between the outer periphery of the top of the turntable 233 and the outer periphery of the bottom of the oil storage tank 231. The top and bottom of the sealing ring are respectively embedded in the top surface of the turntable 233 and the bottom surface of the oil storage tank 231. After the lubricating oil is discharged, the lubricating oil will fall onto the driven gear 121, which makes the driven gear 121 more stable during the meshing operation with the driving gear 22, greatly reducing the stress friction of the important drive structure used in the operation of the inward swing door, and improving the stability and service life. When one motor fails, the other motor can independently drive the main shaft to rotate, ensuring that the doors can open and close normally, thus solving the problem of complete paralysis of both doors due to the failure of a traditional single motor.
[0020] Furthermore, the diameters of the lower oil drain hole 236 and the upper oil drain hole 235 are designed according to actual lubrication requirements.
[0021] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A double inner swing door double motor drive structure of a passenger vehicle, characterized by, It includes a door frame (1) and two sets of motor drive structures (2), as well as an inner swing door (11) installed in the door opening of the door frame (1). The two sets of motor drive structures (2) are set on the top of the main shaft (12) of the inner swing door (11), and the outer periphery of the motor drive structure (2) is covered with a protective box (3). Both sets of motor drive structures (2) include a motor (21) with a brake on the output shaft and a drive self-lubricating mechanism (23) for gear lubrication. The bottom of the drive shaft of the motor (21) is equipped with a drive gear (22). The outer periphery of the top of the main shaft (12) of the inner swing door (11) is equipped with a driven gear (121) via a key pin. The driven gear (121) meshes with the drive gear (22). The drive self-lubricating mechanism (23) is located above the driven gear (121). The top of the main shaft (12) is connected to a support flange (122).
2. The dual-motor drive structure for a double inward-swinging door of a passenger vehicle according to claim 1, characterized in that, The self-lubricating mechanism (23) is located inside the protective box (3). The self-lubricating mechanism (23) includes an oil storage tank (231). The top of the oil storage tank (231) is connected to an installation plate (232). The top of the installation plate (232) and the protective box (3) are both provided with corresponding first installation holes (30). The first installation hole (30) of the installation plate (232) and the first installation hole (30) of the protective box (3) are connected by bolts. An oil replenishment port is provided on one side of the top of the oil storage tank (231), and a protective cap is provided on the threaded cover of the oil replenishment port.
3. The double-motor driving structure of a double-in-swing door of a passenger vehicle according to claim 2, characterized in that, The bottom plate of the oil storage tank (231) is provided with a circular positioning protrusion (237) at its center. The bottom plate of the oil storage tank (231) is provided with an upper oil drain hole (235) on both sides. The bottom of the bottom plate of the oil storage tank (231) is covered with a turntable (233), and an oil drain bucket (234) is welded to the outer periphery of the bottom of the turntable (233).
4. The double-motor driving structure of a double-in-swing door of a passenger vehicle according to claim 3, characterized in that, The turntable (233) has a circular positioning socket (238) at its center that corresponds to the circular positioning protrusion (237), and the circular positioning protrusion (237) is inserted into the circular positioning socket (238). The turntable (233) has lower oil drain holes (236) on both sides, and the lower oil drain holes (236) coincide with the upper oil drain holes (235). Thus, the lubricating oil in the oil storage tank (231) leaks into the oil drain hopper (234).
5. The double-motor driving structure of a double-in-swing door of a passenger vehicle according to claim 4, characterized in that, The turntable (233) has a second mounting hole (239) at its bottom and on the outer periphery of the circular positioning socket (238) that corresponds to the support flange (122). The support flange (122) is fixed to the second mounting hole (239) by bolts.