Lead screw transmission sliding plug door
By introducing a copper wire brush and a servo motor-controlled cleaning device into the screw drive system of the sliding door, the problems of dirt adsorption and lubrication replenishment in the sliding door system have been solved, realizing automated cleaning and lubrication and improving the system's maintenance convenience.
Patent Information
- Application Number
- CN202422947154.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-02
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2034-12-02
AI Technical Summary
The existing screw drive system of sliding doors is prone to accumulating dust and dirt after long-term use, and requires frequent cleaning and lubrication, resulting in inconvenient maintenance.
A cleaning column with a copper wire brush was designed. As the sliding block moves along the threaded rod, it scrapes away dirt and replenishes lubricating oil. Combined with servo motor control and pressure sensor, it achieves automated cleaning and lubrication.
It automates the cleaning and lubrication process, reducing maintenance costs and improving the cleanliness and reliability of the system.
Smart Images
Figure CN223689529U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to traffic equipment technical field especially relates to a screw rod drive sliding plug door. BACKGROUND
[0002] The sliding plug door is a common vehicle door, and the door has a plug action in the whole opening and closing process. When the vehicle door is closed, the sliding plug door is plugged into the vehicle door to achieve airtight effect. When the vehicle door is opened, the sliding plug door slides along the vehicle body direction to allow people to pass through.
[0003] The existing sliding plug door is often controlled by using an electric device. For example, a servo motor is used to control the opening and closing of the sliding plug door in cooperation with a threaded screw rod. In order to reduce the frictional resistance during long-term use, lubricating oil is often added. However, long-term use of viscous lubricating oil will cause the screw rod to adsorb a lot of dust and dirt, so it is necessary to improve and upgrade the cleaning and lubricating oil supplement. SUMMARY
[0004] The utility model aims at solving the shortcomings in the prior art and provides a screw rod drive sliding plug door which is convenient to clean and supplement lubricating oil.
[0005] In order to achieve the above object, the utility model discloses the following technical scheme: a screw rod drive sliding door includes sliding door, transmission and base, the transmission includes protective housing, servo motor, screw rod, fixed rod, pressure sensor, cleaning device, sliding block and connecting block, the protective housing is wrapped whole transmission and is fixedly installed with special bearing on both sides inner wall, two servo motors are included and are connected with a screw rod respectively, two servo motors are on the same horizontal line and are fixed in the horizontal center position of protective housing, the screw rod surface is equipped with screw threads and two ends are connected with servo motor and special bearing on the inner wall of protective housing respectively, and the servo motor, screw rod and special bearing are all on the same horizontal line, the fixed rod is established in the screw rod just above, one end of fixed rod is fixed in the special bearing just above on the inner wall of protective housing, and the other end is established in the protective housing inner wall of fixed servo motor and the connecting hole through which the screw rod is just below this end, four pressure sensors are established on the inner wall of protective housing on the both sides of fixed rod, the sliding block includes fixed end, transmission end and connecting groove, the transmission end is the special sliding nut of screw rod transmission device, and the inner wall is equipped with thread and is sleeved on the sliding rod, the fixed end is fixedly connected on the transmission end, the fixed end is equipped with the through hole for the fixed rod to pass through, and the length of fixed end is slightly greater than the length after the transmission end and cleaning device are connected, so that the pressure sensor is conveniently triggered, the connecting groove is established on both sides of transmission end and is used for connecting cleaning device, and the connecting block is fixedly connected to the outer surface below sliding block, the cleaning device includes cleaning column, connecting convex, connecting disc, cover and rotating key, one end of cleaning column is fixedly connected with copper wire brush vertically, the steel wire brush is in contact with the screw rod surface screw thread, the cleaning column top is equipped with the hole and is communicated to the connecting place of cleaning column and copper wire brush, the other end of cleaning column is equipped with hole and is equipped with screw threads on the inner wall, the connecting convex is established on the side of cleaning column and is slidably inserted into the connecting groove on both sides of sliding block, the connecting disc is established below cleaning column and extends to the screw rod direction, the extension part of connecting disc is just below the screw rod, the connecting convex, cleaning column and connecting disc are fixedly connected together, the rotating key is T-shaped cylindrical rod and is equipped with screw threads on one end surface, is inserted into the hole on the cleaning column and is equipped with screw threads, the cover is rectangular, when the sliding door is closed, the position opposite sliding block on the protective housing is the cover, the cross-sectional area of cover is greater than the cross-sectional area of sliding block and cleaning device combination, the top of cover is fixed on the protective housing through special hinge, and the protective housing is equipped with the opening with the same cross-sectional area as the cover at this place, the opening is used for placing cover and taking out cleaning device, the connecting block is fixed on the top of sliding door through special screw, and the bottom end of sliding door is the base.
[0006] Preferably, the distance from the horizontal center of the connecting block to the transmission device is equal to half the length of the protective shell covering the two servo motors, which makes the two sliding blocks move to the servo motors and the two sliding doors just contact at the horizontal center of the vehicle door.
[0007] Preferably, the bottom of the base is provided with a sliding groove, and the sliding door is provided with a pulley just arranged in the sliding groove of the base.
[0008] Preferably, the bottom surface of the protective shell is provided with a long rectangular opening for the connecting block to pass through and move along the direction of the rectangular opening.
[0009] Compared with the prior art, the utility model has the beneficial effects that: (1) the cleaning column with copper wire brush moves left and right along the threads on the threaded rod together with the sliding block, so that the dirt adsorbed on the threaded rod is scraped off and falls into the receiving tray; (2) an opening is formed in the protective shell to facilitate taking out the cleaning device for cleaning and adding lubricating oil to the hole at the top end of the cleaning column. BRIEF DESCRIPTION OF DRAWINGS
[0010] Figure 1 It is a structural schematic view of the utility model screw rod transmission sliding door.
[0011] Figure 2 It is a front view of the transmission device of the utility model screw rod transmission sliding door.
[0012] Figure 3 It is a plan view of the cleaning device of the utility model screw rod transmission sliding door.
[0013] Figure 4 It is a right view of the cleaning device of the utility model screw rod transmission sliding door.
[0014] Figure 5 It is the internal line connection condition of the utility model screw rod transmission sliding door. DETAILED DESCRIPTION
[0015] In order to make the personnel in the technical field better understand the scheme of the present application, the technical scheme in the embodiments of the present application will be described clearly and completely in conjunction with the drawings in the embodiments of the present application, such as Figure 1As shown, a screw rod transmission plug door includes a plug door 1, a transmission device 2 and a base 3, the transmission device 2 is fixedly installed at the top edge of the door, the plug door 1 is connected to the transmission device 2 through a connecting block 280, the connecting block 280 is fixed above the plug door 1 through special screws, the distance from the connecting block 280 to the horizontal center of the transmission device 2 is equal to half the length of the protective shell 210 which wraps around the two servo motors 220, so that when the two sliding blocks 270 move in front of the servo motors 220, the two plug doors 1 just contact at the horizontal center of the door and close the whole door through the plug door 1, the cover 264 of the transmission device 2 is rectangular, when the plug door 1 is closed, the position opposite to the sliding block 270 on the protective shell 210 is the cover 264, the cross-sectional area of the cover 264 is larger than the combination of the sliding block 270 and the cleaning device 260, the top of the cover 264 is fixed on the protective shell 210 through special hinges and the protective shell 210 is provided with an opening of the same size as the cover 264 at this position, which can place the cover 264 and facilitate the cleaning device 260 to take, a pulley 110 is fixedly connected below the plug door 1, the pulley 110 is arranged in the groove 310 of the base 3, the base 3 is fixedly installed at the bottom end of the door, the top surface of the base 3 is provided with a groove 310 along the body direction for the plug door 1 to move along the body direction.
[0016] As Figure 2As shown, the transmission device 2 includes a protective shell 210, servo motors 220, threaded rods 230, fixed rods 240, pressure sensors 250, cleaning devices 260, sliding blocks 270 and connecting blocks 280, the protective shell 210 wraps the entire transmission device 2 and the inside walls of both sides are fixedly installed with special bearings, the servo motors 220 are two and are respectively connected with a threaded rod 230, the two servo motors 220 are on the same horizontal line and are fixed at the horizontal center position of the protective shell 210, the threaded rods 230 are provided with threads on the surface and are respectively connected with the servo motors 220 and the special bearings on the inner wall of the protective shell 210 at both ends, the servo motors 220, the threaded rods 230 and the special bearings are on the same horizontal line, the fixed rods 240 are arranged above the threaded rods 230, one end of the fixed rods 240 is fixed above the special bearings on the inner wall of the protective shell 210, the other end is arranged on the inner wall of the protective shell 210 fixed with the servo motors 220 and the connecting hole through which the threaded rods 230 pass is below this end, the pressure sensors 250 are four and are arranged on the inner wall of the protective shell 210 on both sides of the fixed rods 240, the sliding blocks 270 include fixed ends 271, transmission ends 272 and connecting grooves 273, the transmission ends 272 are special sliding nuts of a screw transmission device, the inner wall is provided with threads to be sleeved on the sliding rods 230, the fixed ends 271 are fixedly connected above the transmission ends 272, the fixed ends 271 are provided with through holes for the fixed rods 240 to pass through, the length of the fixed ends 271 is slightly larger than the length of the transmission ends 272 after being connected with the cleaning devices 260, so as to facilitate triggering the pressure sensors 250, the connecting grooves 273 are arranged on both sides of the transmission ends 272 for connecting the cleaning devices 260, the fixed rods 240 assist in limiting the sliding blocks 270 to move left and right along the threaded rods 230, and the connecting blocks 280 are fixedly connected below the outer surface of the sliding blocks 270.
[0017] As Figure 3 and Figure 4As shown, the cleaning device 260 includes a cleaning column 261, a connecting protrusion 262, a receiving disc 263, a cover 264 and a rotating key 265. One end of the cleaning column 261 is fixedly connected with a copper wire brush 2611 vertically. The steel wire brush 2611 is in contact with the surface thread of the screw rod 230. A hole is arranged at the top end of the cleaning column 261 and communicates with the connecting position of the cleaning column 261 and the copper wire brush 2611. Another end of the cleaning column 261 is provided with a hole and the inner wall is provided with a thread. The connecting protrusion 262 is arranged on the side of the cleaning column 261 and can be slidably inserted into the connecting groove 273 of the side edge of the sliding block 270. The receiving disc 263 is arranged below the cleaning column 261 and extends to the direction of the screw rod 230. The extension part of the receiving disc 263 is just below the threaded rod 230. The connecting protrusion 262, the cleaning column 261 and the receiving disc 263 are fixedly connected together. The rotating key 265 is a T-shaped cylindrical rod and one end of the surface is provided with a thread. The thread is inserted into the hole provided with a thread on the cleaning column 261.
[0018] As shown in the drawings, the sliding block 270 is provided with a connecting groove 273 on the side edge. The connecting groove 273 is in sliding connection with the connecting protrusion 262 of the cleaning column 261. The sliding block 270 is provided with a receiving groove 274 on the top surface. The receiving groove 274 is in sliding connection with the connecting block 280 of the cleaning column 261. The sliding block 270 is provided with a receiving groove 275 on the bottom surface. The receiving groove 275 is in sliding connection with the connecting block 280 of the cleaning column 261. The sliding block 270 is provided with a receiving groove 276 on the side surface. The receiving groove 276 is in sliding connection with the connecting block 280 of the cleaning column 261. Figure 5 As shown, the servo motor 220 is connected with the external switch 4 through a wire. The pressure sensor 250 at both ends of the fixed rod 240 is connected with the servo motor 220 which is closer to the fixed rod 240 through a wire. When the pressure sensor receives the pressure signal brought by the sliding block 270 reaching in front of the servo motor 220, the servo motor 220 stops working.
[0019] In use, the external switch 4 is opened to transmit an electric signal to the servo motor 220 to make the servo motor 220 rotate in the positive direction. The working servo motor 220 drives the connected screw rod 230 to rotate. The rotating screw rod 230 drives the sliding block 270 to move to both sides along the direction of the screw rod 230. At this time, the cleaning column 261 on both sides of the sliding block 270 moves in the same direction with the connecting block 280 fixedly connected below the sliding block 270. The copper wire brush at the front end of the cleaning column 261 supplements the lubricating oil in the hole while scraping the dirt on the screw rod 230 when the sliding block 270 moves. The movement of the connecting block 280 drives the fixedly connected sliding door 1 to move. The pulley 110 at the lower end of the sliding door 1 moves in the groove 310 on the base 3. When the sliding block 270 contacts the pressure sensor 250 on the inner wall of both sides of the protective shell 210, the pressure sensor 250 converts the pressure signal into an electric signal and transmits it to the connected servo motor 220 to make it stop working.
[0020] Further, closing the external switch 4 reverses the servo motor 220 through the wire, the servo motor 220 reverses to drive the sliding block 270 to move to the center of the transmission device 2, the sliding block 270 moves to drive the cleaning column 261 and the sliding door 1 to move in the same direction, when the sliding block 270 contacts the two pressure sensors 250 at the center of the transmission device 2, the pressure sensor 250 stops the servo motor 220 through the same principle, at this time, the sliding door 1 is just closed, when the lubricating oil needs to be supplemented and cleaned, the cover 264 is opened when the sliding door 1 is closed, the rotating key 265 is rotated into the threaded hole of the cleaning column 261 to take out the cleaning device 260 for cleaning and supplementing the lubricating oil.
[0021] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Those skilled in the art can make various modifications and changes to the present application. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A screw drive plug door comprising a plug door, a drive and a base, characterized in that: The transmission device includes a protective shell, a servo motor, a threaded rod, a fixed rod, a pressure sensor, a cleaning device, a sliding block and a connecting block, the cleaning device includes a cleaning column, a connecting protrusion, a receiving disc, a cover and a rotating key, one end of the cleaning column is fixedly connected with a copper wire brush vertically, the copper wire brush is in threaded contact with the surface of the threaded rod, a hole is arranged at the top end of the cleaning column and communicates with the junction of the cleaning column and the copper wire brush, another end of the cleaning column is provided with a hole and the inner wall is provided with threads, the connecting protrusion is arranged on the side surface of the cleaning column and is slidably inserted into the connecting groove on the two sides of the sliding block, the receiving disc is arranged below the cleaning column and extends towards the threaded rod, the extension part of the receiving disc is just below the threaded rod, the connecting protrusion, the cleaning column and the receiving disc are fixedly connected together, the rotating key is a T-shaped cylindrical rod and one end of the surface is provided with threads, the rotating key is inserted into the hole provided with threads on the cleaning column, the cover is rectangular, when the sliding door is closed, the cover is opposite to the position of the sliding block on the protective shell, the cross-sectional area of the cover is larger than that of the combination of the sliding block and the cleaning device, the cover is fixed to the protective shell through a special hinge at the top and the protective shell is provided with an opening with the same cross-sectional area as the cover, the connecting block is fixed to the top of the sliding door through a special screw, and the bottom end of the sliding door is the base.
2. A screw drive sliding panel door as claimed in claim 1, characterized in that: The protective shell wraps the whole transmission device and the special bearings are fixedly installed on the inner walls of the two sides, the servo motor is shared by two and is connected with one threaded rod respectively, the two servo motors are on the same horizontal line and are fixed at the horizontal center position of the protective shell, the surface of the threaded rod is provided with threads and the two ends are connected with the special bearings on the inner walls of the protective shell and the servo motor respectively, the servo motor, the threaded rod and the special bearings are on the same horizontal line, the fixed rod is arranged above the threaded rod, one end of the fixed rod is fixed above the special bearing on the inner wall of the protective shell, the other end is arranged on the inner wall of the protective shell for fixing the servo motor and the connecting hole through which the threaded rod passes is below the end, the pressure sensor is shared by four and is arranged on the inner wall of the protective shell on the two sides of the fixed rod, the sliding block includes a fixed end, a transmission end and a connecting groove, the transmission end is a special sliding nut of the screw rod transmission device, the inner wall is provided with threads and is sleeved on the threaded rod, the fixed end is fixedly connected above the transmission end, the fixed end is provided with a through hole for the fixed rod to pass through, the length of the fixed end is slightly larger than the length of the combination of the transmission end and the cleaning device to facilitate triggering the pressure sensor, the connecting groove is arranged on the two sides of the transmission end for connecting the cleaning device, and the connecting block is fixedly connected to the outer surface below the sliding block.
3. A screw drive sliding panel door as claimed in claim 2 wherein: The distance from the connecting block to the horizontal center of the transmission device is equal to half the length of the protective shell wrapping the two servo motors.
4. A screw drive sliding panel door as claimed in claim 1, characterized in that: The base is provided with a sliding groove at the top, the sliding door is provided with a pulley at the bottom end, and the pulley is just arranged in the sliding groove of the base.
5. A screw drive sliding panel door as claimed in claim 2 wherein: The protective shell bottom surface is provided with a long rectangular opening.