Electric single inward swing passenger door pump

Abstract

The invention discloses an electric single-inward swing passenger door pump, which includes a base plate and a brushless motor. A bridge shaft is placed on the left side of the brushless motor reducer. The bridge shaft is connected to the upper side of the base plate by bolts. The upper side of the bridge shaft is rotatably connected to the bridge gear by a rotating shaft. The bridge gear drives the upper gear of the clutch to rotate. The bridge shaft is positioned with a reserved hole on the base plate and is fixed to the base plate by hexagonal bolts. The lower gear shaft of the clutch has an interference fit with the bearing in the electromagnetic clutch and is fixed by a shaft clamp. The electromagnetic clutch is fixed to the base plate by countersunk bolts. When the electromagnetic clutch is powered on, the upper gear of the clutch meshes with the face teeth of the lower gear of the clutch, and the spring in the middle of the electromagnetic clutch is pressed down. The invention controls the opening and closing of the door by driving the gear transmission through the output of the brushless motor. The invention solves the problem that the doors of buses without air sources need to be opened and closed manually, which is convenient for people to get on and off the bus.

Description

Technical Field

[0001] The invention relates to the technical field of automobile parts, in particular to an electric single-inward swing passenger door pump. Background Art

[0002] At present, domestic pneumatic door pumps only have anti-pinch function when closing the door, but not anti-pinch function when opening the door. In the past, the anti-pinch system of the door pump was a timer controller with a delay time of about 4-5 seconds for anti-pinch. At this time, people would be clamped for about 2-3 seconds. These control methods and technical requirements do not meet EU standards. The anti-pinch system of our company's door pump uses air induction anti-pinch. When the bus encounters an obstacle with a force less than 150N during the process of closing the door slowly, the bus door will automatically open instantly. However, the above two control systems often have the problem of control switch damage. The delay controllers and pneumatic anti-pinch function control systems of the two control systems do not have the anti-pinch function when opening the door, and the pneumatic door pump has a long air pipe, many joints, and is easy to leak. The present invention designs a new electric single-inward swing passenger door pump. The standards adopted by electric bus doors are GB / T 12432-1990 "Technical Conditions for Passenger Door Pumps for Buses" and GB / T12433-1990. The swing arm device is built into the structure of our company's electric inner swing door, making the door body more beautiful; the use of intelligent control system makes the bus door safety system more perfect. The intelligent anti-pinch control system has both door opening and door closing anti-pinch control functions, door opening alarm prompts and door closing alarm prompts, and door opening is equipped with signal lights. The above functions have the functions of rail transit vehicle systems on the current market. The intelligent anti-pinch control system, when the bus is closing the door slowly and encounters an obstacle force less than 150N, the bus door will automatically open instantly. When the bus is opening the door slowly and encounters an obstacle force less than 150N, the bus door will automatically stop instantly, which can avoid the phenomenon of pinching people, making the bus door system safer, and also solves the common deficiencies of the bus door safety control system on the current market, but the cost of this mechanism is slightly high and the stability needs long-term testing.

[0003] Traditional pneumatic door pumps require an external air source for the bus, resulting in the need to manually open and close the doors of buses without an air source. Buses usually install a mechanical pull-rope mechanism for emergency door opening. The mechanical pull-rope mechanism has a large rotational force, is inconvenient to install, and has poor anti-pinch performance. Summary of the invention

[0004] The purpose of the present invention is to provide an electric single-inward swing passenger door pump to solve the problem that the traditional pneumatic door pump proposed in the above background technology requires an external air source for the bus, resulting in the need for manual opening and closing of the door of the bus without an air source. The bus usually installs a mechanical pull rope mechanism for emergency door opening. The mechanical pull rope mechanism has a large rotational force, is inconvenient to install and has poor anti-pinch performance.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an electric single-inward swing passenger door pump, comprising a base plate and a brushless motor, the left side of the brushless motor is connected with a brushless motor reducer by bolts, the brushless motor reducer is connected to the right side above the base plate by bolts, the brushless motor is transmission-connected to the brushless motor reducer, the upper side of the brushless motor reducer is fixedly connected with an output shaft, the upper end of the output shaft is connected with an output gear by screws, a flat key is installed between the output shaft and the output gear, a bridge shaft is placed on the left side of the brushless motor reducer, the bridge shaft is connected to the upper side of the base plate by bolts, the upper side of the bridge shaft is rotatably connected to the bridge gear by a rotating shaft, the bridge gear comprises an upper bridge gear and a lower bridge gear, the upper bridge gear and the lower bridge gear are respectively connected to the upper and lower sides of the rotating shaft by screws, the upper bridge gear and the output gear are meshed with each other, an electric motor is placed on the left side of the bridge shaft Magnetic clutch, the electromagnetic clutch is connected to the upper side of the base plate by bolts, and a clutch upper gear and a clutch lower gear are respectively arranged above the electromagnetic clutch, the clutch upper gear is located on the upper side of the clutch lower gear, and the clutch upper gear is meshed with the lower bridge gear, and a door shaft spline bearing seat is arranged on the left side of the electromagnetic clutch, the door shaft spline bearing seat is connected to the upper side of the base plate by bolts, a door shaft spline bearing is installed in the door shaft spline bearing seat, the door shaft spline bearing seat is rotatably connected with the door shaft spline through the door shaft spline bearing, a door shaft spline gear and a micro switch cam are installed on the upper side of the door shaft spline, the micro switch cam and the door shaft spline are connected by a top screw, the door shaft spline gear is located on the upper side of the micro switch cam, the door shaft spline gear is meshed with the clutch lower gear, and a door opening micro switch and a door closing micro switch are respectively arranged on the left and right sides in front of the micro switch cam.

[0006] Preferably, the bridge shaft is rotatably connected to the rotating shaft via a bridge shaft bearing.

[0007] Preferably, the bridge shaft bearing is a plastic bearing.

[0008] Compared with the prior art, the present invention has the following beneficial effects:

[0009] 1) The present invention controls the door opening and closing by means of gear transmission driven by the output of a brushless motor. Compared with the traditional pneumatic door pump, the invention solves the disadvantage that the doors of buses without air sources need to be opened and closed manually, making it more convenient for people to get on and off the bus;

[0010] 2) The present invention has the characteristics of novel structure, scientific rationality, convenient operation, high reliability and flexible use, and complies with relevant national standards;

[0011] 3) In an emergency, the clutch is powered off, the surface teeth of the clutch upper gear and the clutch lower gear are separated, and the spring inside the clutch is released, so that the door can open automatically. It is more stable than the emergency door opening structure of the old mechanical pull rope mechanism and does not require external devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the present invention;

[0013] Figure 2 For the present invention Figure 1 Left view structural diagram;

[0014] Figure 3 For the present invention Figure 1 Schematic diagram of the structure from top view;

[0015] Figure 4 It is a schematic diagram of the structure of the brushless motor of the present invention;

[0016] Figure 5 This is a schematic diagram of the bridge gear structure of the present invention;

[0017] Figure 6 It is a schematic diagram of the structure of the electromagnetic clutch of the present invention;

[0018] Figure 7 It is a schematic diagram of the door shaft spline gear structure of the present invention.

[0019] In the figure: 1 brushless motor, 2 brushless motor reducer, 3 output shaft, 4 output gear, 5 bridge gear, 6 bridge shaft, 7 clutch lower gear, 8 clutch upper gear, 9 electromagnetic clutch, 10 micro switch cam, 11 door shaft spline gear, 12 door opening micro switch, 13 door closing micro switch, 14 door shaft spline bearing, 15 door shaft spline, 16 bottom plate, 17 door shaft spline bearing seat. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] Example:

[0024] See also Figure 1-7The present invention provides a technical solution: an electric single-inward swing passenger door pump, comprising a base plate 16 and a brushless motor 1, wherein the left side of the brushless motor 1 is connected with a brushless motor reducer 2 by bolts. Compared with a DC brush motor, the DC brush motor has a short service life and needs to replace the carbon brushes after a long time. When the DC brush motor is working, an arc is continuously generated between the commutator and the carbon brush of the rotor. If there is flammable gas in the car, it will cause serious safety hazards, while the brushless motor does not have these disadvantages. The brushless motor reducer 2 is bolted to the right side above the base plate 16, and the brushless motor 1 is transmission-connected to the brushless motor reducer 2. The upper side of the brushless motor reducer 2 is fixedly connected with an output shaft 3, and the upper end of the output shaft 3 is connected with an output shaft 3 by screws. Output gear 4, a bridge shaft 6 is placed on the left side of the brushless motor reducer 2, and the bridge shaft 6 is connected to the upper side of the base plate 16 by bolts. Specifically, the bridge shaft 6 is fixed to the base plate 16 by hexagonal bolts through the reserved holes on the base plate 16. The upper side of the bridge shaft 6 is rotatably connected to the bridge gear 5 through the rotating shaft. The bridge gear 5 includes an upper bridge gear and a lower bridge gear, and the upper bridge gear and the lower bridge gear are respectively connected to the upper and lower sides of the rotating shaft by screws. The upper bridge gear and the output gear 4 are meshed with each other, and an electromagnetic clutch 9 is placed on the left side of the bridge shaft 6. The electromagnetic clutch 9 is connected to the upper side of the base plate 16 by bolts. Specifically, the electromagnetic clutch 9 is fixed to the base plate 16 by countersunk bolts, and the upper part of the electromagnetic clutch 9 A clutch upper gear 8 and a clutch lower gear 7 are respectively provided, wherein the clutch upper gear 8 is located on the upper side of the clutch lower gear 7, the clutch lower gear 7 shaft and the bearing in the electromagnetic clutch 8 are interference fit and fixed by a shaft clamp, and a spring is provided in the electromagnetic clutch 8, when the electromagnetic clutch 9 is powered on, the clutch upper gear 8 and the face teeth of the clutch lower gear 7 are meshed, and the spring in the middle of the electromagnetic clutch 9 is pressed down, and when the electromagnetic clutch 9 is powered off, the spring in the middle of the electromagnetic clutch 9 is released, and the clutch upper gear 8 and the clutch lower gear 7 are separated by a certain gap, and when the electromagnetic clutch 9 is powered on, the door is locked, and when the electromagnetic clutch 9 is powered off, the door can be manually pushed open, and the switch of the emergency valve in the vehicle controls the start and stop of the electromagnetic clutch 9 through a series connection, and the electromagnetic clutch The device 9 is an existing device, the clutch upper gear 8 is meshed with the lower bridge gear, the bridge gear 5 drives the clutch upper gear 8 to rotate, and a door shaft spline bearing seat 17 is arranged on the left side of the electromagnetic clutch 9, and the door shaft spline bearing seat 17 is connected to the upper side of the bottom plate 16 by bolts, and the bolts used to fix the door shaft spline bearing seat 17, the bridge shaft 6 and the electromagnetic clutch 9 are all coated with thread glue to make them firmly fixed, and a door shaft spline bearing 14 is installed in the door shaft spline bearing seat 17, and the door shaft spline bearing seat 17 is rotatably connected with the door shaft spline 15 through the door shaft spline bearing 14, and a door shaft spline gear 11 and a micro switch cam 10 are installed on the upper side of the door shaft spline 15, and the door shaft spline gear 11 is located on the upper side of the micro switch cam 10,The door shaft spline gear 11 is meshed with the clutch lower gear 7, and the door opening microswitch 12 and the door closing microswitch 13 are respectively arranged on the left and right sides in front of the microswitch cam 10, and the door opening microswitch 12 and the door closing microswitch 13 are fixed by a switch bracket. When the door is opened and closed in place, the openings on both sides of the microswitch cam 10 can just close the corresponding microswitches of the door opening and closing in place, so that the door can operate normally, realizing the basic function of the invention. The door pump of the present invention has an anti-pinch function. When an object is clamped when closing the door, the door automatically opens after an anti-pinch delay of 1 second. The anti-pinch force meets the GB13094 standard. On the contrary, the same is true for closing the door. In the electric single inward swing passenger door pump of the present invention, the door pump is controlled by The control system is controlled by imported chips, and various intelligent control methods can be programmed with software programs. The controllable motor load current overcurrent protection can automatically detect and ensure the service life of the motor. The door pump control system can adjust multiple parameters, including door opening and closing speed, door opening and closing time, door opening and closing speed, door opening and closing anti-pinch reaction time, door opening and closing anti-pinch force, etc. The controller input voltage is 24V, the drive mode is square wave, the control mode is open-loop control and closed-loop control, and the protection functions include: short circuit detection, output phase loss protection, overcurrent protection, overvoltage protection, undervoltage protection, overheating protection, overload protection, overtemperature protection, etc. The system protection function is relatively complete, and the parameters can be adjusted by buttons, which is convenient and flexible.

[0025] A flat key is installed between the output shaft 3 and the output gear 4 to facilitate the output shaft 3 to stably drive the output gear 4 to rotate.

[0026] The micro switch cam 10 is connected to the door shaft spline 15 via a top screw, which facilitates the adjustment of the micro switch cam 10.

[0027] The bridge shaft 6 is rotatably connected to the rotating shaft via a bridge shaft bearing.

[0028] The bridge shaft bearing is a plastic bearing.

[0029] Working principle: The brushless motor 1 drives the output shaft 3 to rotate through the brushless motor reducer 2. Since the output gear 4 and the upper bridge gear are meshed with each other, the output shaft 3 drives the bridge gear 5 to rotate through the output gear 4. The lower bridge gear and the clutch upper gear 8 are meshed with each other, thereby driving the clutch upper gear 8 to rotate. When the electromagnetic clutch 9 is energized, the electromagnetic clutch 9 generates magnetic force through the electromagnet to mesh the face teeth of the clutch upper gear 8 and the clutch lower gear 7, so that the clutch upper gear 8 drives the clutch lower gear 7 to rotate. Since the clutch lower gear 7 and the door shaft spline gear 11 are meshed with each other, the door shaft spline gear 11 is driven to rotate. The micro switch cam 10 rotates following the door shaft spline gear 11 through the door shaft spline 15. When the switch doors are in place respectively. , the openings on both sides of the microswitch cam 10 can just close the microswitch of the door opening and closing, so that the door can operate normally. When the magnetic clutch 9 is powered off, the spring in the middle of the electromagnetic clutch 9 is loosened, and the clutch upper gear 8 and the clutch lower gear 7 are separated by a certain gap, so that the clutch lower gear 7 can rotate by itself after being stressed, so that the door can be opened. When the device is used, the entire device is loaded into the air duct with the tray, and after the passenger door and the column mechanism are installed, simple debugging is carried out, and electrical connectors such as the brushless motor 1, the electromagnetic clutch 9, the door closing microswitch 13 and the door opening microswitch 12 are plugged in. After the door is manually closed in place, the microswitch cam 10 touches the door closing microswitch 13, and the top screw in the middle of the microswitch cam 10 is tightened to fix it, so that the door can be opened and closed.

[0030] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, so it is intended to include all changes within the meaning and scope of the equivalent elements of the claims, and any figure mark in the claims should not be regarded as limiting the claims involved. Although the embodiments of the present invention have been shown and described, it is understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. An electric single inward swing passenger door pump, comprising a base plate (16) and a brushless motor (1), characterized in that: The left side of the brushless motor (1) is connected to a brushless motor reducer (2) by bolts. The brushless motor reducer (2) is connected to the right side above the bottom plate (16) by bolts. The brushless motor (1) is transmission-connected to the brushless motor reducer (2). The upper side of the brushless motor reducer (2) is fixedly connected to an output shaft (3). The upper end of the output shaft (3) is connected to an output gear (4) by screws. A flat key is installed between the output shaft (3) and the output gear (4). A bridge shaft (6) is placed on the left side of the brushless motor reducer (2). The bridge shaft (6) is connected to the upper side of the bottom plate (16) by bolts. The upper side of the bridge shaft (6) is rotatably connected to the bridge gear (5) via a rotating shaft. The bridge gear (5) includes an upper bridge gear and a lower bridge gear. The upper bridge gear and the lower bridge gear are respectively connected to the upper and lower sides of the rotating shaft by screws. The upper bridge gear and the output gear (4) are meshed with each other. An electromagnetic clutch (9) is placed on the left side of the bridge shaft (6). The electromagnetic clutch (9) is connected to the upper side of the bottom plate (16) by bolts. The electromagnetic clutch (9 ) are provided above the upper clutch gear (8) and the lower clutch gear (7), the upper clutch gear (8) is located on the upper side of the lower clutch gear (7), the upper clutch gear (8) and the lower bridge gear are meshed with each other, a door shaft spline bearing seat (17) is provided on the left side of the electromagnetic clutch (9), the door shaft spline bearing seat (17) is connected to the upper side of the bottom plate (16) by bolts, a door shaft spline bearing (14) is installed in the door shaft spline bearing seat (17), and the door shaft spline bearing seat (17) is connected to the upper side of the bottom plate (16) by bolts. 4) a door shaft spline (15) is rotatably connected, a door shaft spline gear (11) and a micro switch cam (10) are installed on the upper side of the door shaft spline (15), the micro switch cam (10) and the door shaft spline (15) are connected by a top screw, the door shaft spline gear (11) is located on the upper side of the micro switch cam (10), the door shaft spline gear (11) and the clutch lower gear (7) are meshed with each other, and a door opening micro switch (12) and a door closing micro switch (13) are respectively arranged on the left and right sides in front of the micro switch cam (10).

2. The electric single inward swing passenger door pump according to claim 1, characterized in that: The bridge shaft (6) is rotatably connected to the rotating shaft via a bridge shaft bearing.

3. The electric single inward swing passenger door pump according to claim 1, characterized in that: The bridge shaft bearing is a plastic bearing.

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