Electric double-inner swing door

Abstract

The utility model discloses an electric double inner swing door which comprises a driving mechanism, a left door shaft assembly, a right door shaft assembly, a left door plate assembly and a right door plate assembly, a driving bracket is installed on the top of a passenger car door frame, and the driving mechanism comprises a motor and a worm gear reducer and is in transmission connection with a T-shaped crank transmission device. One end of the T-shaped crank component is hinged to one end of a left door shaft connecting rod, the other end of the left door shaft connecting rod is hinged to a left bearing rocker arm, the other end of the T-shaped crank component is hinged to one end of a right door shaft connecting rod, and the other end of the right door shaft connecting rod is hinged to a right bearing rocker arm. The left bearing rocker is fixedly mounted at the top of the left door shaft; the right bearing rocker is fixedly mounted at the top of the right door shaft; the bottom of the driving bracket is provided with a guide channel, the top of the left door plate is provided with a left guide wheel, the top of the right door plate is provided with a right guide wheel, and the left guide wheel and the right guide wheel are assembled in the guide channel. According to the utility model, the driving and transmission modes are optimized, and the door plank has the advantages of high action synchronism of the left and right door planks and strong locking stability of the door planks.

Description

Technical field:

[0001] The utility model relates to the technical field of electric inner swing doors for buses, in particular to an electric double inner swing door. Background technology:

[0002] At present, the pneumatic double inner swing door on large buses uses compressed air as the power source to control the air source through the solenoid valve, pushes the left and right cylinder pistons to reciprocate, thereby driving the left and right door shafts to rotate, and then realizes the opening and closing of the pneumatic inner swing door through the limit of the left and right guide wheels connected to the door panel. As the noise generated by the pneumatic compressor and the pneumatic door is becoming more and more sensitive, the electric double inner swing door has emerged to solve the above-mentioned problems. The existing electric double inner swing door is divided into dual motor drive and single motor drive. The main defects of the dual motor drive structure are complex control, difficult manual unlocking, poor reliability and high cost. Chinese patent 201721207995.4 discloses an electric double inner swing door, including a fan gear coaxially driven with the door shaft, a driving mechanism for driving the fan gear to rotate, and an unlocking mechanism. The unlocking mechanism includes a cylinder, a push rod extending from the cylinder, and a lock gear located at the end of the cylinder push rod. The lock gear is provided with a lock gear rotating shaft for horizontal rotation around it, and an elastic element is provided on the lock gear rotating shaft. The patent has reliable locking, good mechanism stability, and a safety anti-pinch function. However, this patent adopts dual motors to drive the door panels separately, the synchronization is not ideal, the mechanism is complex, and manual unlocking is difficult. Therefore, it is necessary to propose a new electric double inward swing door. Utility model content:

[0003] The purpose of the utility model is to provide an electric double inner swing door, including a driving mechanism, left and right door shaft assemblies, and left and right door panel assemblies. The driving mechanism includes a motor, a worm gear reducer and a pinion gear, and the driving mechanism is connected to a T-crank transmission device. The utility model adopts a single motor to drive the left and right double door panels, optimizes the driving and transmission methods, and has the advantages of high synchronization of the left and right door panels and strong locking stability of the door panels. The slider clutch unlocking mechanism can achieve sensitive unlocking, which is safe and reliable.

[0004] The technical solution of the utility model is implemented as follows: an electric double inner swing door, including a driving mechanism, left and right door shaft assemblies, left and right door panel assemblies, and a control circuit, the main points of which are: a driving bracket is installed on the top of the door frame of the passenger car, and the driving bracket is arranged horizontally; the driving mechanism is arranged in the middle of the driving bracket, the driving mechanism includes a motor, a worm gear reducer and a small gear, and the driving mechanism is connected to a T-crank transmission device; the T-crank transmission device includes a base, a large gear, a T-crank component, and a vertical shaft. The large gear is installed on the vertical shaft as an integral structure with the large gear, the large gear is arranged at the lower part, the T-crank component is arranged at the upper part, and the T-crank transmission device is fixed on the driving bracket; the small gear in the driving mechanism is meshed and connected with the large gear, one end of the T-crank component is hinged to one end of a left door shaft connecting rod through a crank pin, the other end of the left door shaft connecting rod is hinged to a left load-bearing rocker arm, the other end of the T-crank component is hinged to one end of a right door shaft connecting rod through a crank pin, and the right door shaft connecting rod is hinged to one end of a left door shaft connecting rod. The other end is hinged with a right load-bearing rocker arm; the left and right door shaft assemblies include a left door shaft and a right door shaft; the left door shaft head is mounted on the left end of the drive bracket through a bearing, the left door shaft root is mounted on the coach body through a bearing, an upper left turning arm is arranged on the upper part of the left door shaft, a lower left turning arm is arranged on the lower part thereof, and the left load-bearing rocker arm is mounted and fixed on the top of the left door shaft; the right door shaft head is mounted on the right end of the drive bracket through a bearing, the right door shaft root is mounted on the coach body through a bearing, an upper right turning arm is arranged on the upper part of the right door shaft, a lower right turning arm is arranged on the lower part thereof, and the right The load-bearing rocker arm is installed and fixed on the top of the right door shaft; the left and right door panel assemblies include a left door panel and a right door panel, the top of the left door panel is installed together with the upper left swing arm, the bottom of the left door panel is installed together with the lower left swing arm, the top of the right door panel is installed together with the upper right swing arm, and the bottom of the right door panel is installed together with the lower right swing arm; a guide groove is arranged at the bottom of the driving bracket, a left guide wheel is arranged at the top of the left door panel, and the left guide wheel is assembled in the guide groove, and a right guide wheel is arranged at the top of the right door panel, and the right guide wheel is assembled in the guide groove.

[0005] Another technical solution of the utility model is implemented as follows: an electric double inner swing door, including a driving mechanism, left and right door shaft assemblies, left and right door panel assemblies, and a control circuit, the main points of which are: a driving bracket is installed on the top of the passenger car door frame, and the driving bracket is horizontally arranged; the driving mechanism is arranged in the middle of the driving bracket, the driving mechanism includes a motor, a worm gear reducer and a pinion, and the driving mechanism is connected to a disc crank transmission device; the disc crank transmission device includes a base, a large gear, a disc crank component, a vertical shaft, and the disc crank The component and the large gear are installed on the vertical shaft as an integrated structure up and down, the large gear is arranged at the lower part, the disc-shaped crank component is arranged at the upper part, and the disc-shaped crank transmission device is fixed on the driving bracket; the small gear in the driving mechanism is meshed and connected with the large gear, and two axially symmetrical crank pins are arranged on the disc surface of the disc-shaped crank component, one of which is hinged to one end of a left door shaft connecting rod, and the other end of the left door shaft connecting rod is hinged to a left load-bearing rocker arm, and the other crank pin is hinged to one end of a right door shaft connecting rod, and the right door shaft The other end of the connecting rod is hinged with a right load-bearing rocker arm; the left and right door shaft assemblies include a left door shaft and a right door shaft; the head of the left door shaft is mounted on the left end of the driving bracket through a bearing, the root of the left door shaft is mounted on the coach body through a bearing, an upper left turning arm is arranged on the upper part of the left door shaft, a lower left turning arm is arranged on the lower part thereof, and the left load-bearing rocker arm is mounted and fixed on the top of the left door shaft; the head of the right door shaft is mounted on the right end of the driving bracket through a bearing, the root of the right door shaft is mounted on the coach body through a bearing, an upper right turning arm is arranged on the upper part of the right door shaft, a lower right turning arm is arranged on the lower part thereof, and the The right load-bearing rocker arm is installed and fixed on the top of the right door shaft; the left and right door panel assemblies include a left door panel and a right door panel, the top of the left door panel is installed together with the upper left swing arm, the bottom of the left door panel is installed together with the lower left swing arm, the top of the right door panel is installed together with the upper right swing arm, and the bottom of the right door panel is installed together with the lower right swing arm; a guide groove is arranged at the bottom of the driving bracket, a left guide wheel is arranged at the top of the left door panel, and the left guide wheel is assembled in the guide groove, and a right guide wheel is arranged at the top of the right door panel, and the right guide wheel is assembled in the guide groove.

[0006] In order to achieve reasonable speed control during the opening and closing of the left door panel and the right door panel, and form a speed distribution of first slow and then fast or first fast and then slow, the installation angle H of the line connecting the left load-bearing rocker arm and the left door shaft axis and the right door shaft axis is 50°-54°, ​​and the installation angle F of the line connecting the right load-bearing rocker arm and the left door shaft axis and the right door shaft axis is 36°-40°.

[0007] In order to improve the speed and convenience of unlocking and resetting the coach door, a longitudinal slide is arranged in the middle of the driving bracket, an unlocking slider is installed on the longitudinal slide, and the driving mechanism is installed on the unlocking slider; the unlocking slider is hinged to a manual unlocking mechanism, and the manual unlocking mechanism includes a follower connecting rod, an unlocking swing arm, an unlocking plate, and an unlocking handle; one end of the unlocking swing arm is hinged to the driving bracket through a swing arm fixing pin, and the other end thereof is hinged to the follower connecting rod and the unlocking plate, and the middle part of the unlocking plate is hinged to the unlocking handle.

[0008] The utility model has the following beneficial effects:

[0009] 1. Since the electric double inner swing door of the utility model adopts a driving mechanism composed of a single motor and a worm gear reducer, the driving and transmission modes are optimized, the structure is simple, and the door has a reliable self-locking performance.

[0010] 2. Since the driving mechanism of the electric double inner swing door of the utility model is organically combined with the unlocking slider, the quickness and simplicity of the unlocking and resetting operations of the coach door are improved.

[0011] 3. Since the electric double inner swing door of the utility model adopts a T-shaped crank component or a disc-shaped crank component and a left and right door shaft connecting rod transmission, the synchronization of the left and right door panels is ensured. Description of the drawings:

[0012] Figure 1 This is a schematic diagram of the structure of the electric double inner swing door of the utility model;

[0013] Figure 2 This is a schematic diagram of the top structure of the electric double inner swing door of the utility model;

[0014] Figure 3 It is a schematic diagram of the layout of the drive bracket and the drive mechanism of the utility model;

[0015] Figure 4 This is a schematic diagram of the longitudinal slide structure of the electric double inner swing door of the utility model;

[0016] Figure 5 This is a schematic diagram of the structure of the T-crank transmission device of the utility model;

[0017] Figure 6 This is a schematic diagram of the structure of the disc-type crank transmission device of the utility model;

[0018] Figure 7 This is a diagram of the door closing position of the left and right load-bearing rocker arms of the utility model;

[0019] Figure 8 This is a diagram of the door opening positions of the left and right load-bearing rocker arms of the utility model;

[0020] Fig. 9It is a schematic diagram of the locked state of the manual unlocking mechanism of the utility model. Specific implementation method:

[0021] The utility model is further described below in conjunction with the accompanying drawings.

[0022] Embodiment 1:

[0023] See attached Figure 1 , Attachment Figure 2 , Attachment Figure 3 , Attachment Figure 4 , the attached drawing shows the structure of the electric double inner swing door of the utility model. Figure 1 The electric double inner swing door is shown on the inner side of the coach. Figure 2 Shows the attached Figure 1 The layout of the drive bracket, drive mechanism, and T-crank transmission device on the top of the electric double inner swing door (located on the inside of the coach body), attached Figure 3 Yes Figure 1 And attached Figure 2 Attached is the top view of Figure 4 Yes Figure 2The electric double inner swing door of the utility model includes a driving mechanism, left and right door shaft components, left and right door panel components, and a control circuit. There is a driving bracket 1 installed on the top of the passenger car door frame 41, and the driving bracket is arranged horizontally; the driving mechanism is arranged in the middle of the driving bracket, and the driving mechanism includes a motor 2, a worm gear reducer 3 and a small gear. The driving mechanism is connected to a T-crank transmission device 15 in transmission; the T-crank transmission device includes a base 17, a large gear 16, a T-crank component 19, and a vertical shaft 18. The T-crank component and the large gear are an integral structure installed on the upper and lower sides of the large gear. on a vertical axis, the large gear is arranged at the lower part, the T-crank member is arranged at the upper part, and the T-crank transmission device is fixed on the driving bracket; the small gear in the driving mechanism is meshed and connected with the large gear (both the small gear and the large gear are ordinary spur gears), one end of the T-crank member is hinged to one end of a left door shaft connecting rod 13 through a crank pin 35, and the other end of the left door shaft connecting rod is hinged to a left load-bearing rocker arm 22, and the other end of the T-crank member is hinged to one end of a right door shaft connecting rod 14 through a crank pin, and the other end of the right door shaft connecting rod It is hinged with a right load-bearing rocker arm 23; the left and right door shaft assemblies include a left door shaft 24 and a right door shaft 25; the left door shaft head is mounted on the left end of the drive bracket through a bearing, the left door shaft root is mounted on the coach body through a bearing, an upper left turning arm 26 is arranged on the upper part of the left door shaft, and a lower left turning arm 27 is arranged on the lower part thereof, and the left load-bearing rocker arm is mounted and fixed on the top of the left door shaft; the right door shaft head is mounted on the right end of the drive bracket through a bearing, the right door shaft root is mounted on the coach body through a bearing, an upper right turning arm 28 is arranged on the upper part of the right door shaft, and a lower right turning arm 29 is arranged on the lower part thereof, and the right The load-bearing rocker arm is installed and fixed on the top of the right door shaft; the left and right door panel assemblies include a left door panel 30 and a right door panel 31, the top of the left door panel is installed together with the upper left swing arm, the bottom of the left door panel is installed together with the lower left swing arm, the top of the right door panel is installed together with the upper right swing arm, and the bottom of the right door panel is installed together with the lower right swing arm; a guide groove 32 is arranged at the bottom of the driving bracket, a left guide wheel 39 is arranged at the top of the left door panel, and the left guide wheel is assembled in the guide groove, and a right guide wheel 40 is arranged at the top of the right door panel, and the right guide wheel is assembled in the guide groove.

[0024] See attached Figure 2 , Attachment Figure 3 In this embodiment, the drive bracket is mounted on the top of the door frame of the coach (the left and right parts or the left and right ends of the drive bracket in the utility model or in this embodiment are attached Figure 2 , Attachment Figure 3The diagram is for reference only and should not be used as a limitation to the present invention). The drive bracket is made of steel plate and fixed to the coach door frame by welding, riveting or bolting. The motor in the drive mechanism is a stepper motor (also called an encoding motor, a type of DC motor), and the motor, worm gear reducer and pinion are installed and fixed in an integrated structure (this structure is a finished product for public sale and belongs to the prior art, so it will not be described in detail). The pinion of the drive mechanism is set at the bottom of the reducer. The coach door frame is a rectangular steel frame, which is part of the coach body and belongs to the prior art, and is not within the scope of protection of this patent.

[0025] See attached Figure 5 In this embodiment, the T-crank transmission device 15 includes a base 17, a large gear 16, a T-crank component 19, and a vertical shaft 18. The T-crank component and the large gear are installed on the vertical shaft as an integral structure. The large gear is arranged at the lower part, and the T-crank component is arranged at the upper part. The vertical shaft is arranged perpendicular to the base. The T-crank transmission device is fixed to the driving bracket through the base, and the vertical shaft is arranged perpendicular to the driving bracket; the pinion in the driving mechanism is meshed and connected with the large gear. Considering that the speed of opening and closing the door should not be too fast, the number of teeth of the pinion is less than that of the large gear. The T-crank component includes a straight rod 33 and a vertical sleeve 34. The straight rod and the vertical sleeve are arranged perpendicular to each other. Fixed crank pins 35 are arranged at the left and right ends of the I-shaped rod, and the two crank pins are arranged axially symmetrically. The left door shaft connecting rod is hinged on one crank pin, and the right door shaft connecting rod is hinged on the other crank pin. Rod end joint bearings are installed at the ends of the left and right door shaft connecting rods. The installation structure of the rod end joint bearings and the crank pins belongs to the prior art and will not be described in detail. The vertical shaft is arranged on the base, and the vertical shaft and the base can be manufactured as one piece, or they can be processed separately and then assembled together. The T-shaped crank component and the large gear are an upper and lower integrated structure, which are installed on the vertical shaft through a sliding bearing. The T-shaped crank component and the large gear can be manufactured as one piece, or they can be processed separately and then assembled together to form a component that can be linked as one piece. This processing and manufacturing method belongs to the prior art.

[0026] See attached Figure 2 , Attachment Figure 3In this embodiment, the left and right door shaft assemblies include a left door shaft 24 and a right door shaft 25; the left door shaft head is mounted on the left end of the drive bracket through a bearing, the left door shaft head is higher than the upper surface of the drive bracket, the left door shaft root is placed below the drive bracket and mounted on the bus body through a bearing, usually, the left door shaft root is fixed on the body floor of the bus, and can also be fixed on the bus door frame according to the design requirements. The left load-bearing rocker arm is fixed to the left door shaft head, usually fixed by a spline, and can also be fixed by a cylindrical pin. An upper left turning arm 26 is arranged on the upper part of the left door shaft, and a lower left turning arm 27 is arranged on the lower part thereof. The right door shaft head is mounted on the right end of the drive bracket through a bearing, the right door shaft head is higher than the upper surface of the drive bracket, the right door shaft root is placed below the drive bracket and mounted on the bus body through a bearing, usually, the right door shaft root is fixed on the body floor of the bus, and can also be fixed on the bus door frame according to the design requirements. The right load-bearing rocker arm is fixed to the right door shaft head, usually by spline, or by cylindrical pin. An upper right turning arm 28 is arranged on the upper part of the right door shaft, and a lower right turning arm 29 is arranged on the lower part thereof.

[0027] The left and right door panel assembly includes a left door panel and a right door panel. The left door panel 30 is installed with an upper left swing arm and a lower left swing arm, and the right door panel 31 is installed with an upper right swing arm and a lower right swing arm. The middle position of the top of the left door panel is installed with the upper left swing arm, and the middle position of the bottom of the left door panel is installed with the lower left swing arm. The installation position of the top of the left door panel and the installation position of the bottom of the left door panel are located on the same vertical axis, and the left door panel can rotate around the vertical axis. The installation method of the right door panel and the upper and lower right swing arms is the same as that of the left door panel, and the description is not repeated. The installation method of the left and right door panels and the left and right swing arms respectively belongs to the prior art and is not described in detail in this embodiment.

[0028] See attached Figure 1 , Attachment Figure 2 , Attachment Figure 3 In the present invention, the control circuit refers to a circuit for controlling the opening and closing of the coach door, including a control button, a micro switch 38, and a switch trigger. The switch trigger is mounted on the large gear disc (not shown in the accompanying drawings), and the micro switch is mounted on the drive bracket. In this embodiment, the control circuit belongs to the prior art and will not be described in detail.

[0029] See attached Figure 2 , Attachment Figure 4In this embodiment, a guide channel 32 is provided at the bottom of the driving bracket. The guide channel is a long channel with a ∩-shaped cross section, and is fixed to the lower surface of the driving bracket by welding, riveting or threaded connection. A left guide wheel 39 is provided at the top of the left door panel, and the left guide wheel is assembled in the guide channel. A right guide wheel 40 is provided at the top of the right door panel, and the right guide wheel is assembled in the guide channel. The structure of the left and right guide wheels is not shown in the drawings. The guide channel and the installation structure of the left and right guide wheels belong to the prior art and will not be described in detail in this embodiment.

[0030] See also Figure 1 , Attachment Figure 7 , Attachment Figure 8 When the electric double inner swing door of the utility model is in the closed state, the motor receives the door opening signal and starts to rotate. Since the small gear is in meshing state with the large gear of the T-crank transmission device, the T-crank component is driven to rotate and the left door shaft is driven to rotate right (clockwise) and the right door shaft is driven to rotate left (counterclockwise) through the left door shaft connecting rod and the right door shaft connecting rod respectively, and the left and right door plates are swung inward to open the door. When the electric double inner swing door is in the open state, the motor receives the door closing signal and starts to rotate. Since the small gear is in meshing state with the large gear of the T-crank transmission device, the T-crank component is driven to rotate and the left door shaft is driven to rotate left (counterclockwise) and the right door shaft is driven to rotate right (clockwise) through the left door shaft connecting rod and the right door shaft connecting rod respectively, and the left and right door plates are closed. Due to the self-locking performance of the worm gear reducer, the stable locking state of the left and right door plates is guaranteed.

[0031] Embodiment 2:

[0032] This embodiment is an improvement on the basis of the first embodiment. For the same contents in this embodiment as those in the first embodiment, please refer to the contents disclosed in the first embodiment for understanding, and no repeated description is made here; the contents disclosed in the first embodiment should also be regarded as the contents disclosed in the second embodiment. No further description is given.

[0033] See attached Figure 4 , Attachment Fig. 9 In this embodiment, Fig. 9 Yes Figure 3 In this embodiment, a longitudinal slideway 21 is provided in the middle of the drive bracket, an unlocking slider 20 is installed on the longitudinal slideway, and the drive mechanism is installed on the unlocking slider; the longitudinal slideway refers to the extension line of the length direction of the slideway parallel to the line connecting the left door shaft and the right door shaft. Figure 4 A structure of a longitudinal slide is disclosed, wherein the slide is provided with symmetrical [-shaped edges, and a flat unlocking slider is installed in the slide. The longitudinal slide of the utility model can also adopt other structural forms in the prior art, such as a dovetail track structure. The unlocking slider is hinged to a manual unlocking mechanism 12, see attached Fig. 9The manual unlocking mechanism includes a follower connecting rod 4, an unlocking swing arm 6, an unlocking plate 5, and an unlocking handle 11. One end (left end) of the unlocking swing arm is hinged to the driving bracket through a swing arm fixing pin 9, and the swing arm fixing pin 9 is fixed on the driving bracket. The other end (right end) is hinged to the follower connecting rod and the unlocking plate (top end) (the three parts share a pin 8 on the unlocking plate), and the middle part of the unlocking plate is hinged to the unlocking handle through the unlocking plate lower pin 7. The middle part of the unlocking handle is hinged to the driving bracket through the unlocking handle pin 42, and the unlocking handle pin 42 is fixed on the driving bracket. The right end of the follower connecting rod is hinged to the unlocking slider through the unlocking slider pin 10. In this embodiment, the driving mechanism, the longitudinal slide, and the unlocking slider constitute a quick clutch mechanism for an electric double inner swing door. Attached Fig. 9 The manual unlocking mechanism position is shown when the driving mechanism is in meshing state with the large gear of the T-crank transmission device; the center point of the unlocking slider pin 10 at the right end of the follower connecting rod and the center point of the swing arm fixed pin 9 at the left end of the unlocking swing arm form a steady-state straight line. The left end of the follower connecting rod, the right end of the unlocking swing arm, and the top of the unlocking plate are hinged together by the same pin (pin 8 on the unlocking plate). The center point of the pin on the unlocking plate is designed to be outside the above-mentioned steady-state straight line, that is, the right end of the unlocking swing arm swings counterclockwise by 0.1°-0.5°. The setting of the pin position on the unlocking plate can ensure the stability of the meshing transmission state between the driving mechanism and the T-crank transmission device. When the electric double inner swing door is in normal use (including operations such as opening, closing, and locking the door panel), the unlocking swing arm cannot swing clockwise, and the follower connecting rod cannot rotate counterclockwise with the unlocking slider pin at its right end. When the motor in the driving mechanism fails (including power failure) and cannot drive the bus door panel to open or close, manual door opening or closing is required. The unlocking handle is operated to rotate counterclockwise (with the unlocking handle pin as the center of the circle), the right end of the unlocking swing arm swings clockwise 30°-45°, the unlocking slider moves to the left, and the driving mechanism is separated from the large gear of the T-crank transmission device and exits the meshing state. The bus door panel exits the self-locking state, and the bus door panel can be opened or closed manually. After the driving mechanism fault is eliminated, the unlocking handle 11 is operated in the reverse direction, and the driving mechanism and the T-crank transmission device resume the meshing state. This mechanism improves the quickness and simplicity of the bus door unlocking and resetting operations.

[0034] The manual unlocking mechanism in the utility model can be operated manually at a short distance by unlocking the handle 11, or a wire drawing emergency valve can be installed on the unlocking plate 5 to realize the operation of the manual unlocking mechanism at a long distance, for example, the wire drawing emergency valve can be operated at the position of the bus driver to unlock the bus door, and the wire drawing emergency valve can also be operated at the position of the bus safety officer to unlock the bus door. The wire drawing emergency valve is a commodity sold publicly in the market, belongs to the prior art, and is not described in detail.

[0035] See attached Figure 1 And attached Figure 7In order to achieve reasonable speed control during the opening and closing of the left door panel and the right door panel, and form a speed distribution of first slow and then fast or first fast and then slow, the installation angle H of the line connecting the left load-bearing rocker arm and the axis of the left door shaft and the axis of the right door shaft is 50°-54°, ​​and the optimal installation angle is 52°. The installation angle F of the line connecting the right load-bearing rocker arm and the axis of the left door shaft and the axis of the right door shaft is 36°-40°, and the optimal installation angle is 38°. The setting of the installation angles of the left and right load-bearing rocker arms is based on the setting when the door panels (i.e., the left door panels and the right door panels) are in the closed state. When the door panels are in the closed state, the left door panels and the right door panels are in the same plane. When the door panels are in the closed state, the installation positions of the left door panels and the right door panels are determined, and the installation positions of the upper left rotating arm and the upper right rotating arm are also determined. The line between the left door shaft axis (the axis line of the door shaft) and the right door shaft axis (the axis line of the door shaft) is parallel to the outer surface of the left and right door panels. The setting of the installation angle of the left and right load-bearing rocker arms solves the problem of interference between the left and right door panels' center seam rubber strips when the single motor drives the left and right door panels close to the closing position.

[0036] Embodiment three:

[0037] This embodiment is an improvement on the basis of the first embodiment. For the same contents in this embodiment as those in the first embodiment, please refer to the contents disclosed in the first embodiment for understanding, and no repeated description is made here; the contents disclosed in the first embodiment should also be regarded as the contents disclosed in the third embodiment. No more repeated description is made. For the same contents in this embodiment as those in the second embodiment, please refer to the contents disclosed in the second embodiment for understanding, and no repeated description is made here; the contents disclosed in the second embodiment should also be regarded as the contents disclosed in the third embodiment. No more repeated description is made here.

[0038] See attached Figure 1 , Attachment Figure 2 , Attachment Figure 3 , Attachment Figure 4The electric double inner swing door of this embodiment includes a driving mechanism, left and right door shaft assemblies, left and right door panel assemblies, and a control circuit. A driving bracket is installed on the top of the coach door frame, and the driving bracket is arranged horizontally; the driving mechanism is arranged in the middle of the driving bracket, and the driving mechanism includes a motor, a worm gear reducer and a pinion gear. The driving mechanism is connected to a disc crank transmission device; the disc crank transmission device includes a base 17, a large gear 16, a disc crank component 36, and a vertical shaft 18. The disc crank component and the large gear are vertically connected. The integrated structure is installed on the vertical shaft, the large gear is arranged at the lower part, the disc-shaped crank component is arranged at the upper part, and the disc-shaped crank transmission device is fixed on the driving bracket; the small gear in the driving mechanism is meshed and connected with the large gear, and two axially symmetrical crank pins 35 are arranged on the disc surface of the disc-shaped crank component, one of which is hinged to one end of a left door shaft connecting rod, and the other end of the left door shaft connecting rod is hinged to a left load-bearing rocker arm, and the other crank pin is hinged to one end of a right door shaft connecting rod, and the other end of the right door shaft connecting rod is hinged to a left load-bearing rocker arm. The left and right door shaft assemblies are hinged with a right load-bearing rocker arm; the left and right door shaft assemblies include a left door shaft and a right door shaft; the left door shaft head is mounted on the left end of the driving bracket through a bearing, the left door shaft root is mounted on the coach body through a bearing, an upper left turning arm is arranged on the upper part of the left door shaft, a lower left turning arm is arranged on the lower part thereof, and the left load-bearing rocker arm is mounted and fixed on the top of the left door shaft; the right door shaft head is mounted on the right end of the driving bracket through a bearing, the right door shaft root is mounted on the coach body through a bearing, an upper right turning arm is arranged on the upper part of the right door shaft, a lower right turning arm is arranged on the lower part thereof, and the right load-bearing rocker arm is mounted and fixed on the top of the left door shaft. The rocker arm is installed and fixed on the top of the right door shaft; the left and right door panel components include a left door panel and a right door panel, the top of the left door panel is installed together with the upper left swing arm, the bottom of the left door panel is installed together with the lower left swing arm, the top of the right door panel is installed together with the upper right swing arm, and the bottom of the right door panel is installed together with the lower right swing arm; a guide groove is arranged at the bottom of the driving bracket, a left guide wheel is arranged at the top of the left door panel, and the left guide wheel is assembled in the guide groove, and a right guide wheel is arranged at the top of the right door panel, and the right guide wheel is assembled in the guide groove.

[0039] See attached Figure 6The drive mechanism in this embodiment is connected to a disk-type crank transmission device in transmission; the disk-type crank transmission device includes a base 17, a large gear 16, a disk-type crank member 36, and a vertical shaft 18. The disk-type crank member and the large gear are installed on the vertical shaft as an integral structure, the large gear is arranged at the bottom, the disk-type crank member is arranged at the top, and the disk-type crank transmission device is fixed on the driving bracket; the pinion in the drive mechanism is meshed with the large gear, and the disk-type crank member 36 includes an elliptical disk and a disk lower sleeve 37, and the elliptical disk and the lower sleeve are arranged perpendicular to each other. Two axially symmetrical crank pins 35 are arranged on the disk surface of the disk-type crank member, one of which is hinged to one end of a left door shaft connecting rod, and the other end of the left door shaft connecting rod is hinged to a left load-bearing rocker arm, wherein the other crank pin is hinged to one end of a right door shaft connecting rod, and the other end of the right door shaft connecting rod is hinged to a right load-bearing rocker arm.

[0040] In order to improve the speed and convenience of unlocking and resetting the coach door, a longitudinal slide is arranged in the middle of the driving bracket, an unlocking slider is installed on the longitudinal slide, and the driving mechanism is installed on the unlocking slider; the unlocking slider is hinged to a manual unlocking mechanism, and the manual unlocking mechanism includes a follower connecting rod, an unlocking swing arm, an unlocking plate, and an unlocking handle; one end of the unlocking swing arm is hinged to the driving bracket through a swing arm fixing pin, and the other end thereof is hinged to the follower connecting rod and the unlocking plate, and the middle part of the unlocking plate is hinged to the unlocking handle.

Claims

1. An electric double inner swing door, comprising a driving mechanism, left and right door shaft assemblies, left and right door panel assemblies, and a control circuit, characterized in that: There is a driving bracket installed on the top of the door frame of the passenger car, and the driving bracket is arranged horizontally; the driving mechanism is arranged in the middle of the driving bracket, and the driving mechanism includes a motor, a worm gear reducer and a small gear, and the driving mechanism is connected to a T-crank transmission device; the T-crank transmission device includes a base, a large gear, a T-crank component, and a vertical shaft. The T-crank component and the large gear are an integral structure installed on the vertical shaft, and the large gear is arranged at the bottom. The T-crank component The T-crank transmission device is arranged at the upper part, and is fixed on the driving bracket; the small gear in the driving mechanism is meshed and connected with the large gear, one end of the T-crank component is hinged to one end of a left door shaft connecting rod through a crank pin, and the other end of the left door shaft connecting rod is hinged to a left load-bearing rocker arm, and the other end of the T-crank component is hinged to one end of a right door shaft connecting rod through a crank pin, and the other end of the right door shaft connecting rod is hinged to a right load-bearing rocker arm; the left and right door shaft assemblies include a left door shaft, a right door shaft; the left door shaft head is installed on the left end of the drive bracket through a bearing, the left door shaft root is installed on the passenger car body through a bearing, an upper left turning arm is arranged on the upper part of the left door shaft, a lower left turning arm is arranged on the lower part thereof, and the left load-bearing rocker arm is installed and fixed on the top of the left door shaft; the right door shaft head is installed on the right end of the drive bracket through a bearing, the right door shaft root is installed on the passenger car body through a bearing, an upper right turning arm is arranged on the upper part of the right door shaft, a lower right turning arm is arranged on the lower part thereof, and the right load-bearing rocker arm is installed and fixed on the top of the right door shaft The left and right door panel assemblies include a left door panel and a right door panel, the top of the left door panel is installed together with the upper left swing arm, the bottom of the left door panel is installed together with the lower left swing arm, the top of the right door panel is installed together with the upper right swing arm, and the bottom of the right door panel is installed together with the lower right swing arm; a guide groove is arranged at the bottom of the driving bracket, a left guide wheel is arranged at the top of the left door panel, and the left guide wheel is assembled in the guide groove, and a right guide wheel is arranged at the top of the right door panel, and the right guide wheel is assembled in the guide groove.

2. The electric double inward swing door according to claim 1, characterized in that: The installation angle (H) of the left load-bearing rocker arm and the line connecting the left door shaft axis and the right door shaft axis is 50°-54°, ​​and the installation angle (F) of the right load-bearing rocker arm and the line connecting the left door shaft axis and the right door shaft axis is 36°-40°.

3. The electric double inward swing door according to claim 2, characterized in that: A longitudinal slide is arranged in the middle of the driving bracket, an unlocking slider is installed on the longitudinal slide, and the driving mechanism is installed on the unlocking slider; the unlocking slider is hinged to a manual unlocking mechanism, and the manual unlocking mechanism includes a follower connecting rod, an unlocking swing arm, an unlocking plate, and an unlocking handle, one end of the unlocking swing arm is hinged to the driving bracket through a swing arm fixing pin, and the other end thereof is hinged to the follower connecting rod and the unlocking plate, and the middle part of the unlocking plate is hinged to the unlocking handle.

4. An electric double inner swing door, comprising a drive mechanism, left and right door shaft assemblies, left and right door panel assemblies, and a control circuit, characterized in that: There is a driving bracket installed on the top of the door frame of the passenger car, and the driving bracket is arranged horizontally; the driving mechanism is arranged in the middle of the driving bracket, and the driving mechanism includes a motor, a worm gear reducer and a pinion gear, and the driving mechanism is connected to a disc crank transmission device; the disc crank transmission device includes a base, a large gear, a disc crank component, and a vertical shaft. The disc crank component and the large gear are installed on the vertical shaft as an integral structure, and the large gear is arranged at the bottom. The disc crank component is arranged The disc-shaped crank transmission device is arranged at the upper part, and is fixed on the driving bracket; the small gear in the driving mechanism is meshed and connected with the large gear, and two axially symmetrical crank pins are arranged on the disc surface of the disc-shaped crank component, one of which is hinged to one end of a left door shaft connecting rod, and the other end of the left door shaft connecting rod is hinged to a left load-bearing rocker arm, wherein the other crank pin is hinged to one end of a right door shaft connecting rod, and the other end of the right door shaft connecting rod is hinged to a right load-bearing rocker arm; the left and right door shaft assemblies include a left door shaft, Right door shaft; the left door shaft head is installed on the left end of the drive bracket through a bearing, the left door shaft root is installed on the bus body through a bearing, an upper left turning arm is arranged on the upper part of the left door shaft, a lower left turning arm is arranged on the lower part thereof, and the left load-bearing rocker arm is installed and fixed on the top of the left door shaft; the right door shaft head is installed on the right end of the drive bracket through a bearing, the right door shaft root is installed on the bus body through a bearing, an upper right turning arm is arranged on the upper part of the right door shaft, a lower right turning arm is arranged on the lower part thereof, and the right load-bearing rocker arm is installed and fixed on the right door shaft Top; the left and right door panel assemblies include a left door panel and a right door panel, the top of the left door panel is installed together with the upper left swing arm, the bottom of the left door panel is installed together with the lower left swing arm, the top of the right door panel is installed together with the upper right swing arm, and the bottom of the right door panel is installed together with the lower right swing arm; a guide groove is arranged at the bottom of the driving bracket, a left guide wheel is arranged at the top of the left door panel, and the left guide wheel is assembled in the guide groove, and a right guide wheel is arranged at the top of the right door panel, and the right guide wheel is assembled in the guide groove.

5. The electric double inward swing door according to claim 4, characterized in that: A longitudinal slide is arranged in the middle of the driving bracket, an unlocking slider is installed on the longitudinal slide, and the driving mechanism is installed on the unlocking slider; the unlocking slider is hinged to a manual unlocking mechanism, and the manual unlocking mechanism includes a follower connecting rod, an unlocking swing arm, an unlocking plate, and an unlocking handle, one end of the unlocking swing arm is hinged to the driving bracket through a swing arm fixing pin, and the other end thereof is hinged to the follower connecting rod and the unlocking plate, and the middle part of the unlocking plate is hinged to the unlocking handle.

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