Locomotive cab electric side window lifting mechanism

Abstract

The invention discloses a locomotive cab electric side window lifting mechanism, which relates to the technical field of side window lifting, and comprises a fixed frame mounted on a locomotive side wall, the upper part of the fixed frame is provided with a window part, the two sides of the inner wall of the fixed frame are provided with chutes, and the chutes are slidably provided with a movable window body matched with the window part; the fixing frame is provided with a fixing plate and a driving assembly below the window part. Through the arrangement of the adjusting assembly, the output shaft of the motor and the driving gear can be reliably switched between a meshing state and a dismeshing state, mode switching can be completed by rotating the rotating handle in a cab, and the mode switching can be completed without complex disassembly or assembly or by means of special tools. Connection and separation between the output shaft of the motor and the driving gear are rapidly and reliably completed, the switching process is simple and convenient, a driver or a maintainer can respond rapidly in an actual operation or maintenance scene, and the risk that a vehicle window cannot be operated completely due to electrical faults is avoided.

Description

Technical Field

[0001] This invention relates to the field of side window lifting technology, and more specifically, to an electric side window lifting mechanism for a locomotive cab. Background Technology

[0002] Traditional locomotive driver's cab side windows mostly adopt a lift-up sliding window structure. This structure mainly includes a fixed frame, a sliding window, and a balancing mechanism for lifting the sliding window. During operation, it is opened by pulling down and closed by lifting up.

[0003] Currently, the opening and closing methods for railway locomotive side windows are mainly divided into two types: purely mechanical manual and electrically operated. The purely mechanical manual structure relies on manual power to directly drive the window movement. Although operation is relatively labor-intensive, it boasts high structural stability and an extremely low failure rate because it does not involve electric drive components such as motors, electric telescopic rods, or related electrical control systems. With technological advancements and increasing demands for locomotive driving comfort, electrically operated window structures using button control have emerged. This structure utilizes electric drive components such as motors and electric telescopic rods, in conjunction with an electrical control unit, to achieve automatic raising and lowering of the window, making operation simple and labor-saving.

[0004] However, electric lifting structures rely on the normal operation of electrical components. If the motor, drive components, or electronic control system malfunctions, the windows will not be able to open or close properly, affecting their reliability. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the present invention provides an electric side window lifting mechanism for a locomotive cab.

[0006] The technical solution is as follows: An electric side window lifting mechanism for a locomotive cab includes a fixed frame installed on the side wall of the locomotive, a window portion at the upper part of the fixed frame, and sliding grooves on both sides of the inner wall of the fixed frame. A movable window body that cooperates with the window portion is slidably installed in the sliding grooves. A fixed plate and a drive assembly are installed below the window portion on the fixed frame. A lifting assembly connected to the bottom of the movable window body is installed on the fixed plate. The drive assembly is used to drive the lifting assembly to push the movable window body up and down along the sliding groove. The drive assembly includes a motor and a drive gear. An adjustment assembly is installed on the drive gear to switch the motor output shaft and the drive gear between an engaged state and a disengaged state.

[0007] Furthermore, the adjustment assembly includes a bracket located at the bottom of the fixed frame, an auxiliary frame on the side wall of the bracket, and a mounting cavity for the drive gear to be rotatably mounted between the bracket and the auxiliary frame. A third spline groove is provided on the side wall of the drive gear near the auxiliary frame. A spline groove ring is rotatably mounted on the auxiliary frame and the corresponding side wall of the drive gear. The third spline groove and the spline groove ring together form the adjustment cavity. A connector is slidably mounted in the adjustment cavity. The connector is used to switch the connection between the shaft and the drive gear in the meshing state and the disengaged state.

[0008] Furthermore, a connecting shaft is rotatably mounted on the bracket and the drive gear at the same axis. A first spline groove is provided at one end of the connecting shaft that extends into the third spline groove. A first spline portion that mates with the third spline groove or spline groove ring is provided on the outer wall of the connecting member. A circular groove is provided at the end of the connecting member corresponding to the connecting shaft. A second spline portion that mates with the first spline groove is provided on the inner wall of the circular groove.

[0009] Furthermore, a mating part is detachably installed at the end of the connector away from the drive gear. The mating part has a sliding cavity inside. The inner wall of the sliding cavity at the end away from the connector has a second spline groove. A drive component is slidably installed in the sliding cavity. The outer wall of the drive component has a third spline portion that mates with the second spline groove. The side wall of the drive component has an extension rod portion that passes through the mating part and the side window trim panel. A baffle is threadedly installed at the end of the extension rod portion away from the drive component.

[0010] Furthermore, an extension frame is installed on the side wall of the auxiliary frame away from the support for sliding installation of the extension rod. The extension rod has a blocking plate on the outer wall between the auxiliary frame and the extension frame. A spring is installed between the blocking plate and the extension frame to provide elastic force to keep the third spline part always in the sliding cavity.

[0011] Furthermore, the outer wall of the extension rod has external threads, and a throttle is threaded between the side window trim panel and the baffle. The throttle is used to drive the drive component to move axially.

[0012] Furthermore, the lifting assembly includes a rocker arm rotatably mounted on the fixed plate, a guide plate connected to the bottom of the movable window body, and an auxiliary gear rotatably mounted on the fixed frame and meshing with the drive gear. The bottom of the rocker arm has a sector gear portion that meshes with the auxiliary gear, and the top of the rocker arm has a connecting portion that slides with the guide plate.

[0013] Furthermore, the balancing assembly includes a connecting rod structure coaxially connected to the swing arm and a balancing structure located at the other end of the fixed plate. The balancing structure includes a sliding block slidably located at the fixed plate. The sliding block is vertically positioned, and multiple tension springs are installed between the sliding block and the fixed plate in the horizontal direction. A connecting rod connected to the connecting rod structure is installed on the side of the sliding block away from the tension springs.

[0014] Furthermore, the linkage structure includes a first linkage coaxially connected to the swing arm, an arc-shaped linkage hinged to the movable end of the first linkage, a second linkage hinged to the movable end of the arc-shaped linkage, the movable end of the second linkage hinged to the fixed plate, and the movable end of the connecting rod hinged to the second linkage.

[0015] Based on the above, the beneficial effects of the electric side window lifting mechanism for a locomotive cab in this invention are as follows: By adjusting the component settings, the motor's output shaft and drive gear can be reliably switched between engaged and disengaged states. The mode can be switched by rotating the throttle in the driver's cab. The connection and disconnection between the motor's output shaft and drive gear can be completed quickly and reliably without complicated disassembly or special tools. The switching process is simple, allowing drivers or maintenance personnel to respond quickly in actual operation or maintenance scenarios, and avoiding the risk of the windows becoming completely inoperable due to electrical faults.

[0016] With the lifting assembly in place, the connecting part at the top of the swing arm slides into a guide plate fixed to the bottom of the movable window body. As the swing arm swings, its connecting part slides on the guide plate, thereby converting the arc swing of the swing arm into a precise vertical linear motion of the movable window body. The structure is compact and the power transmission is direct.

[0017] Understandably, when the drive assembly fails, the driver or maintenance personnel can directly push or pull the movable window body by hand. At this time, the movement of the movable window body will drive the swing arm in the opposite direction through the guide plate. The swing arm drives the sector gear and auxiliary gear to rotate freely. The mechanical resistance in this process is small, making manual operation very easy and effortless. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of the overall components of the present invention; Figure 2 This is a schematic diagram of the connection structure of the adjustment component, drive component, lifting component and balancing component of the present invention; Figure 3 This is a three-dimensional schematic diagram of the lifting assembly and balancing assembly of the present invention; Figure 4 This is a schematic side sectional view of the entire invention; Figure 5 For the present invention Figure 4 Enlarged schematic diagram of component A in the middle; Figure 6 This is a three-dimensional perspective view of the exploded side cross-section of the adjustment component of the present invention; Figure 7 This is a schematic diagram of the disengaged state of the connecting shaft and the drive gear 320 of the present invention.

[0019] The reference numerals in the appendix of this invention are as follows: 100. Fixed frame; 101. Slide track; 110. Movable window body; 120. Fixed plate; Adjustment component; 210, bracket; 220, connecting shaft; 221, first spline groove; 230, auxiliary frame; 231, extension frame; 232, spline groove ring; 240, connector; 241, first spline part; 2411, second spline part; 242, mating part; 2421, sliding cavity; 2422, second spline groove; 250, driving component; 251, third spline part; 252, blocking plate; 260, baffle; 270, throttle; 280, spring; Drive components; 310, motor; 320, drive gear; 321, third spline groove; Lifting assembly; 410, rocker arm; 411, sector gear section; 412, connecting part; 420, guide plate; 430, auxiliary gear; Balance assembly; 510, sliding block; 520, tension spring; 530, connecting rod; 540, first connecting rod; 550, arc-shaped connecting rod; 560, second connecting rod. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0021] The embodiments provided by the present invention will be described in detail below: like Figures 1 to 7 As shown, an electric side window lifting mechanism for a locomotive cab includes a fixed frame 100 installed on the side wall of the locomotive. The fixed frame 100 has a window portion at its upper part. Slide grooves 101 are provided on both sides of the inner wall of the fixed frame 100. A movable window body 110 that cooperates with the window portion is slidably installed at the slide grooves 101. The slide grooves 101 are used to open and close the window portion. A fixed plate 120 and a drive assembly are installed below the window portion on the fixed frame 100. A lifting assembly connected to the bottom of the movable window body 110 is installed on the fixed plate 120. The drive assembly is used to drive the lifting assembly to push the movable window body 110 up and down along the slide grooves 101. The drive assembly includes a motor 310 and a drive gear 320. An adjustment assembly is installed on the drive gear 320, which is used to switch the output shaft of the motor 310 and the drive gear 320 between an engaged state and a disengaged state.

[0022] It should be noted that the glass plane height of the movable window body 110 is the same as that of the movable window frame, and the gap between it and the side of the fixed frame 100 is 1mm. In addition, the top corner of the movable window frame of the movable window body 110 adopts a right-angle design to prevent foreign objects from entering.

[0023] like Figures 5 to 7 As shown, the adjustment assembly includes a bracket 210 located at the bottom of the fixed frame 100. The bracket 210 has an auxiliary frame 230 on its side wall. A mounting cavity for the drive gear 320 to be rotatably mounted is formed between the bracket 210 and the auxiliary frame 230. A third spline groove 321 is provided on the side wall of the drive gear 320 near the auxiliary frame 230. A spline groove ring 232 is rotatably mounted on the side wall of the auxiliary frame 230 and the drive gear 320 respectively. The third spline groove 321 and the spline groove ring 232 together form the adjustment cavity. A connector 240 is slidably mounted in the adjustment cavity. The connector 240 is used to switch the connection between the shaft 220 and the drive gear 320 in the meshing state and the disengaged state.

[0024] It should be noted that, by setting the spline ring 232, when the second spline portion 2411 on the connector 240 disengages from the first spline groove 221, the first spline portion 241 on the connector 240 can engage with the spline ring 232, thus maintaining the stability of the connector 240 during rotation.

[0025] like Figures 5 to 7 As shown, a connecting shaft 220 is rotatably mounted on the bracket 210 and the drive gear 320 at the same axis. The connecting shaft 220 is connected to the output shaft of the motor 310. A first spline groove 221 is formed at one end of the connecting shaft 220 that extends into the third spline groove 321. A first spline portion 241 that mates with the third spline groove 321 or the spline groove ring 232 is provided on the outer wall of the connector 240. A circular groove is formed at the end of the connector 240 corresponding to the connecting shaft 220. A second spline portion 2411 that mates with the first spline groove 221 is provided on the inner wall of the circular groove.

[0026] A mating part 242 is detachably installed at the end of the connector 240 away from the drive gear 320. The mating part 242 has a sliding cavity 2421 inside. The inner wall of the sliding cavity 2421 away from the connector 240 has a second spline groove 2422. A driving part 250 is slidably installed in the sliding cavity 2421. The outer wall of the driving part 250 has a third spline portion 251 that mates with the second spline groove 2422. The side wall of the driving part 250 has an extension rod portion that passes through the mating part 242 and the side window decorative panel. A baffle 260 is threadedly installed at the end of the extension rod portion away from the driving part 250. The length of the sliding cavity 2421 is greater than the length of the driving part 250.

[0027] An extension frame 231 for sliding installation of the extension rod is installed on the side wall of the auxiliary frame 230 away from the support 210. The extension rod has a blocking plate 252 on the outer wall between the auxiliary frame 230 and the extension frame 231. A spring 280 is installed between the blocking plate 252 and the extension frame 231. The spring 280 is used to provide elastic force to keep the third spline part 251 always in the sliding cavity 2421.

[0028] It should be noted that, through the cooperative arrangement of the mating part 242, the spring 280 and the driving part 250, the driving part 250 is always located within the sliding cavity 2421. When the drive assembly is functioning properly, the connecting shaft 220 drives the connecting part 240 and the drive gear 320 to rotate. Since the driving part 250 is located within the sliding cavity 2421, the rotation of the connecting part 240 will not drive the driving part 250 to rotate. When the drive assembly malfunctions and switches to manual drive, the third spline part 251 engages with the second spline groove 2422, which can drive the mating part 242 and the connecting part 240 to rotate.

[0029] The extension rod has external threads on its outer wall, and a throttle 270 is threaded between the side window trim panel and the baffle 260. The throttle 270 is used to drive the drive component 250 to move axially.

[0030] The drive component 250 has a protrusion on its outer wall, and the extension frame 231 has a groove that mates with the protrusion to limit the circumferential movement of the drive component 250.

[0031] It should be noted that by adjusting the settings of the components, the output shaft of the motor 310 and the drive gear 320 can be reliably switched between the engaged and disengaged states. The mode can be switched by rotating the throttle 270 in the driver's cab. The connection and disconnection between the output shaft of the motor 310 and the drive gear 320 can be completed quickly and reliably without complicated disassembly or special tools. The switching process is simple and facilitates quick response by the driver or maintenance personnel in actual operation or maintenance scenarios, avoiding the risk of the windows becoming completely inoperable due to electrical faults.

[0032] Furthermore, when the drive assembly fails, the motor 310 is in the off state. By rotating the throttle 270, the second spline portion 2411 on the connector 240 is disengaged from the first spline groove 221. At this time, the first spline portion 241 on the connector 240 is engaged with the third spline groove 321 and the spline groove ring 232. This reduces the resistance from the motor 310 when the movable window body 110 is opened and closed manually. The drive component 250 can be rotated instead of the motor 310 to drive the drive gear 320, which also reduces damage to the motor 310.

[0033] Specifically, when the drive assembly motor 310, electronic control system, etc., malfunction, the driver or maintenance personnel can rotate the throttle 270. Due to the engagement of the protrusion and the slot, the rotation of the throttle 270 will drive the drive component 250 to move outward. The outward movement of the drive component 250 causes the third spline portion 251 on the drive component 250 to engage with the second spline groove 2422, which in turn drives the mating component 242 to move outward. The outward movement of the mating component 242 then drives the connecting component 240 to move outward. The outward movement causes the second spline portion 2411 at the connector 240 to disengage from the first spline groove 221. At this time, the connecting shaft 220 and the drive gear 320 are disengaged. Due to the setting of the auxiliary frame 230, when the throttle 270 cannot be rotated, the first spline portion 241, the spline groove ring 232, and the third spline groove 321 on the connector 240 are simultaneously engaged. At this time, the movable window body 110 can be opened or closed normally by manually pushing and pulling it up and down. In addition, the driver or maintenance personnel can remove the baffle 260 by rotating it and install a manual crank to rotate the drive component 250. The rotation of the drive component 250 drives the mating component 242 that meshes with the third spline part 251 to rotate. The rotation of the mating component 242 drives the connecting component 240 to rotate. The rotation of the connecting component 240 drives the drive gear 320 that meshes with it to rotate, so as to manually drive the raising and lowering of the movable window body 110.

[0034] like Figures 2 to 3 As shown, the lifting assembly includes a rocker arm 410 rotatably mounted on the fixed plate 120, a guide plate 420 connected to the bottom of the movable window body 110, and an auxiliary gear 430 rotatably mounted on the fixed frame 100 and meshing with the drive gear 320. The bottom of the rocker arm 410 has a sector gear portion 411 that meshes with the auxiliary gear 430, and the top of the rocker arm 410 has a connecting portion 412 that slides with the guide plate 420.

[0035] It should be noted that, through the setting of the lifting component, the connecting part 412 at the top of the swing arm 410 slides in cooperation with the guide plate 420 fixed at the bottom of the movable window body 110. As the swing arm 410 swings, its connecting part 412 slides on the guide plate 420, thereby converting the arc swing of the swing arm 410 into the precise vertical linear motion of the movable window body 110. The structure is compact and the power transmission is direct.

[0036] Understandably, when the drive component fails, the driver or maintenance personnel can directly push or pull the movable window body 110 by hand. At this time, the movement of the movable window body 110 will drive the swing arm 410 in the opposite direction through the guide plate 420. The swing arm 410 drives the sector gear part 411 and the auxiliary gear 430 to rotate freely. The mechanical resistance is small in this process, making manual operation very convenient and effortless.

[0037] like Figures 1 to 7As shown, the balancing assembly includes a connecting rod structure coaxially connected to the swing arm 410 and a balancing structure located at the other end of the fixed plate 120. The balancing structure includes a sliding block 510 slidably disposed on the fixed plate 120. The sliding block 510 is vertically arranged. Multiple tension springs 520 are installed between the sliding block 510 and the fixed plate 120 in the horizontal direction. A connecting rod 530 connected to the connecting rod structure is installed on the side of the sliding block 510 away from the tension springs 520.

[0038] The linkage structure includes a first linkage 540 coaxially connected to the swing arm 410, an arc-shaped linkage 550 hinged at the movable end of the first linkage 540, a second linkage 560 hinged at the movable end of the arc-shaped linkage 550, the movable end of the second linkage 560 hinged to the fixed plate 120, and the movable end of the connecting rod 530 hinged to the second linkage 560.

[0039] It should be noted that the first connecting rod 540 and the swing rod 410 can be an integral structure or a separate structure. When they are an integral structure, the first connecting rod 540 and the swing rod 410 can rotate around the hinge hole on the fixed plate 120. When they are separate mechanisms, during installation, the included angle between the first connecting rod 540 and the swing rod 410 can be adjusted according to the space requirements for the movement of the movable window body 110, thereby meeting the installation space limitations of the balancing device. This allows the balancing component to achieve a large range of rotation angles within a small space, that is, to achieve a large range of pushing and pulling of the movable window body 110. Moreover, the direction of force transmission is changed by the arc-shaped connecting rod 550 and the second connecting rod 560. On the one hand, the force is stably transmitted to the tension spring 520, and on the other hand, the space occupied by the connecting rod structure can be further reduced. Therefore, the above-mentioned connecting rod structure has the characteristics of stable force transmission and small space occupation.

[0040] It is readily understood that those skilled in the art can combine, split, or reorganize the embodiments provided in this application to obtain other embodiments, all of which do not exceed the protection scope of this application.

[0041] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the embodiments shown are only part of the embodiments of the present invention. The actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. An electric side window lifting mechanism for a locomotive cab, characterized in that, The system includes a fixed frame (100) installed on the side wall of the locomotive. The upper part of the fixed frame (100) has a window section. The inner walls of the fixed frame (100) are provided with slide grooves (101) on both sides. A movable window body (110) that cooperates with the window section is slidably installed in the slide grooves (101). A fixed plate (120) and a drive assembly are installed below the window section of the fixed frame (100). A lifting assembly connected to the bottom of the movable window body (110) is installed on the fixed plate (120). The drive assembly is used to drive the lifting assembly to push the movable window body (110) to move up and down along the slide grooves (101). The drive assembly includes a motor (310) and a drive gear (320). An adjustment assembly is installed at the drive gear (320) for switching the output shaft of the motor (310) and the drive gear (320) between an engaged state and a disengaged state.

2. The electric side window lifting mechanism for a locomotive cab according to claim 1, characterized in that, The adjustment assembly includes a bracket (210) located at the bottom of the fixed frame (100). The bracket (210) has an auxiliary frame (230) on its side wall. An installation cavity for the drive gear (320) to be rotatably mounted is formed between the bracket (210) and the auxiliary frame (230). A third spline groove (321) is provided on the side wall of the drive gear (320) near the auxiliary frame (230). A spline groove ring (232) is rotatably mounted on the side wall of the auxiliary frame (230) corresponding to the drive gear (320). The third spline groove (321) and the spline groove ring (232) together form the adjustment cavity. A connector (240) is slidably mounted in the adjustment cavity. The connector (240) is used to connect the shaft (220) and the drive gear (320) to switch between the meshing state and the disengaged state.

3. The electric side window lifting mechanism for a locomotive cab according to claim 2, characterized in that, A connecting shaft (220) is rotatably mounted on the bracket (210) and the drive gear (320) at the same axis. A first spline groove (221) is provided at one end of the connecting shaft (220) that extends into the third spline groove (321). A first spline portion (241) that mates with the third spline groove (321) or the spline groove ring (232) is provided on the outer wall of the connector (240). A circular groove is provided at the end of the connector (240) that corresponds to the connecting shaft (220). A second spline portion (2411) that mates with the first spline groove (221) is provided on the inner wall of the circular groove.

4. The electric side window lifting mechanism for a locomotive cab according to claim 3, characterized in that, A mating part (242) is detachably installed at the end of the connector (240) away from the drive gear (320). The mating part (242) has a sliding cavity (2421) inside. The inner wall of the sliding cavity (2421) away from the connector (240) has a second spline groove (2422). A drive part (250) is slidably installed in the sliding cavity (2421). The outer wall of the drive part (250) has a third spline part (251) that mates with the second spline groove (2422). The side wall of the drive part (250) has an extension rod that passes through the mating part (242) and the side window trim panel. A baffle (260) is threadedly installed at the end of the extension rod away from the drive part (250).

5. The electric side window lifting mechanism for a locomotive cab according to claim 4, characterized in that, An extension frame (231) for sliding installation of the extension rod is installed on the side wall away from the support (210) of the auxiliary frame (230). The extension rod has a stop plate (252) on the outer wall between the auxiliary frame (230) and the extension frame (231). A spring (280) is installed between the stop plate (252) and the extension frame (231). The spring (280) is used to provide elastic force to keep the third spline part (251) always in the sliding cavity (2421).

6. The electric side window lifting mechanism for a locomotive cab according to claim 5, characterized in that, The extension rod has external threads on its outer wall, and a throttle (270) is threaded between the side window trim panel and the baffle (260). The throttle (270) is used to drive the drive unit (250) to move axially.

7. The electric side window lifting mechanism for a locomotive cab according to claim 1, characterized in that, The lifting assembly includes a rocker arm (410) rotatably mounted on a fixed plate (120), a guide plate (420) connected to the bottom of the movable window body (110), and an auxiliary gear (430) rotatably mounted on a fixed frame (100) and meshing with a drive gear (320). The rocker arm (410) has a sector gear portion (411) at the bottom that meshes with the auxiliary gear (430), and the rocker arm (410) has a connecting portion (412) at the top that slides with the guide plate (420).

8. The electric side window lifting mechanism for a locomotive cab according to claim 1, characterized in that, The balancing assembly includes a connecting rod structure coaxially connected to the pendulum (410) and a balancing structure located at the other end of the fixed plate (120). The balancing structure includes a sliding block (510) slidably located at the fixed plate (120). The sliding block (510) is vertically arranged. Multiple tension springs (520) are installed between the sliding block (510) and the fixed plate (120) in the horizontal direction. A connecting rod (530) connected to the connecting rod structure is installed on the side of the sliding block (510) away from the tension springs (520).

9. The electric side window lifting mechanism for a locomotive cab according to claim 8, characterized in that, The linkage structure includes a first link (540) coaxially connected to the swing arm (410), an arc-shaped link (550) hinged at the movable end of the first link (540), a second link (560) hinged at the movable end of the arc-shaped link (550), the movable end of the second link (560) hinged to the fixed plate (120), and the movable end of the connecting rod (530) hinged to the second link (560).

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