External hanging type retractable door driving device with compact structure

Abstract

The utility model discloses an external hanging type retractable door driving device with a compact structure. The external hanging type retractable door driving device comprises a walking driving wheel and a driving motor used for providing power for the walking driving wheel. The driving motor is electrically connected with the control module; the driving assembly is installed on the outer side of the machine box or located at the joint of the machine box and the door row. The travelling wheels are in rolling contact with the ground under the driving of the driving motor; according to the utility model, the driving assembly is installed in a modularized externally-hung manner and does not need to be placed in the case, so that the miniaturization design and the internal space optimization of the case are facilitated, the structure of the case is more compact, after the externally-hung driving assembly is adopted, the overall volume of the case is greatly reduced, the expansion ratio of the retractable door is greatly improved, and the service life of the retractable door is prolonged. The space optimization of the retractable door is remarkably improved, in addition, the sealing performance of the driving assembly is enhanced, abrasion and damage of the driving assembly are remarkably reduced, and the service life of equipment is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of telescopic doors, in particular to a compact externally mounted telescopic door driving device. Background Art

[0002] Telescopic doors are used to enhance the safety and convenience of building entrances and other areas. They are widely used in industrial plants, commercial buildings, warehouses, garages, residential areas, and other locations. Their key feature is their ability to adjust their length to suit different spatial conditions and uses. The core components of a telescopic door include the housing and the door panels. The housing provides power, while the door panels follow the movement of the housing to open and close. The drive assembly is a crucial component of a telescopic door and is typically fixed within the housing to drive the door panels.

[0003] Existing drive components typically occupy the space at the bottom of the chassis, which not only hinders the chassis's miniaturization but also increases the complexity of design and assembly. Furthermore, the chassis requires more space, increasing the overall size of the chassis. Conventional chassis walls are 500-600mm wide, occupying a large space and hindering the improvement of the telescopic door's telescopic ratio during operation. (The telescopic door's telescopic ratio refers to the ratio of the door's length when deployed to its length when retracted. For example, a telescopic door with an extended length of 10 meters and a retracted length of 1 meter has a telescopic ratio of 10:1. Therefore, for telescopic doors with the same extended length, the higher the telescopic ratio, the shorter the door's length when retracted, and the smaller the space occupied.)

[0004] Furthermore, due to the installation of running wheels on the bottom of a traditional chassis, its bottom is usually partially or completely exposed to the ground, and the sealing performance of the chassis cannot be guaranteed. During daily use, it is often corroded by dust, mud, accumulated water, and sewage on the ground, making the transmission mechanical devices and electrical components in the chassis easily damaged, and the metal components easily rusted, shortening the service life of the chassis and increasing maintenance costs.

[0005] Furthermore, each model or style of telescopic door must meet different performance requirements depending on its specific usage environment (such as safety, durability, and load-bearing capacity), requiring a different chassis structure to accommodate its unique performance needs. Therefore, each model or style of telescopic door requires adaptive redesign of the chassis structure based on product performance requirements, chassis structure, and internal space size. This results in high R&D and design costs, and the chassis drive components are difficult to standardize. Furthermore, customized designs lead to poor compatibility between components, increasing the difficulty of chassis component production and maintenance, and reducing production and maintenance efficiency.

[0006] On the other hand, since the existing driving components are fixed in the chassis to drive the door row to extend and retract, in order to avoid the door row having difficulty in moving when encountering uneven road surfaces, a number of additional movable connecting components are usually required between the existing door row and the chassis, or between the front and rear sections of the door row to ensure the door row's mobility on uneven ground, thereby increasing production costs.

[0007] Therefore, further research and development is needed to solve the problems of the above-mentioned prior art. Summary of the Invention

[0008] In order to solve the technical problems existing in the above-mentioned prior art, the purpose of the utility model is to provide a compact external telescopic door drive device, which can be installed on the outer side of any door body, has strong flexibility, and can effectively reduce product design and assembly costs; the drive assembly adopts an external installation, which is conducive to the miniaturization design of the chassis, greatly improves the telescopic ratio of the telescopic door, and significantly improves the space optimization of the telescopic door.

[0009] One of the purposes of the present invention is achieved through the following technical solutions:

[0010] A compact external telescopic door drive device is installed on the chassis of the telescopic door and is used to drive the telescopic movement of the door row of the telescopic door. It includes a drive assembly and a control module for controlling the drive assembly; the drive assembly includes a travel drive wheel, a drive motor for providing power to the travel drive wheel, and the drive motor is electrically connected to the control module; the drive assembly is installed on the outside of the chassis, or at the connection between the chassis and the door row; the travel drive wheel is driven by the drive motor to roll in contact with the ground, thereby driving the door row of the telescopic door to move.

[0011] As a further illustration of the above scheme, the drive assembly includes a transmission gear set that is transmission-connected to the drive motor; an output gear is provided at the power output end of the drive motor, and the output gear is transmission-connected to the travel drive wheel through the transmission gear set.

[0012] As a further illustration of the above solution, the transmission gear set includes a driving wheel meshingly connected to the output gear and a driven wheel transmission-connected to the driving wheel; the driven wheel is connected to the travel drive wheel via a transmission shaft.

[0013] As a further illustration of the above solution, the drive assembly further includes an encapsulated casing for mounting the travel drive wheel; the travel drive wheel is coaxially connected to the driven wheel via the transmission shaft passing through the encapsulated casing.

[0014] As a further illustration of the above solution, the width of the outer side wall of the chassis is 200-250 mm; and a sealing bottom plate is provided at the bottom of the chassis.

[0015] As a further explanation of the above scheme, the drive assembly can be rotatably installed in the vertical direction on the outside of the chassis through an installation component, and the two travel drive wheels are spaced apart on the drive assembly along the travel direction of the door row; when the two travel drive wheels encounter uneven ground, they drive the packaging casing to swing in the vertical direction to keep the chassis in a horizontal state.

[0016] As a further illustration of the above scheme, the mounting assembly includes a rotating shaft arranged on the side wall of the chassis through a bearing, one end of the rotating shaft passes through the packaging shell and is connected to the driving wheel, and the other end passes through the side wall of the chassis and is located in the inner cavity of the chassis and is limited.

[0017] As a further illustration of the above solution, the driving motor is arranged on the upper part of the packaging housing through a motor mounting plate, and is meshed with the driving wheel for transmission through the output gear.

[0018] As a further illustration of the above solution, a connecting plate is provided between the chassis and the door row, and the drive assembly can be rotatably mounted on the outside of the connecting plate in a vertical direction through an installation component.

[0019] As a further illustration of the above solution, a protective decorative cover is further provided on the outside of the drive assembly, and the protective decorative cover is detachably mounted on the side wall of the chassis via fasteners.

[0020] Compared with the prior art, the present invention has at least the following beneficial effects:

[0021] 1. The drive assembly of the present invention can be produced and assembled as a separate standard module, which not only simplifies the production process and reduces the production difficulty, but also facilitates large-scale standardized manufacturing processes and significantly reduces production costs. Furthermore, since the drive assembly adopts a modular design and is installed externally on both sides of the chassis, compared with traditional telescopic door chassis that require customization of the design and assembly layout of the drive components according to performance requirements and the size of the chassis internal space, the modular external drive assembly of the present invention can be independently installed, debugged and maintained, greatly reducing the complexity of assembly and maintenance. On the other hand, there is no need to make complex modifications to the interior of the door body, and it can be adapted to various door body designs and sizes, reducing the complexity of design and production, reducing design and assembly costs, and having strong flexibility.

[0022] 2. The drive assembly of the present invention is installed externally and does not need to be placed inside the chassis, which contributes to the miniaturization design of the chassis and the optimization of the internal space, making the chassis structure more compact. After the present invention adopts the external drive assembly, the overall volume of the chassis is greatly reduced to 1 / 3 of the volume of the traditional telescopic door chassis, which greatly improves the telescopic ratio of the telescopic door and significantly improves the space optimization of the telescopic door. The compact chassis structure is more suitable for various space-constrained application scenarios, improving the adaptability of the telescopic door;

[0023] 3. Furthermore, the drive assembly is packaged outside the chassis. This not only reduces the overall size of the chassis, optimizes the telescopic door's telescopic ratio, and saves space inside the chassis, but also enhances the sealing performance of the drive assembly, preventing rainwater, dust, sediment, etc. from entering the chassis and corroding the electrical components and metal components inside the chassis. It also avoids rust or electrical failure of internal components due to moisture or accumulated water, thereby extending the service life of the equipment and reducing maintenance and replacement costs.

[0024] 4. The drive assembly of the present invention can also adapt to uneven ground by swinging and moving, providing better mobility on uneven ground. The drive assembly can swing in the vertical direction, maintaining contact with the road surface when traveling on uneven ground. The travel drive wheels perform adaptive compensatory adjustments to keep the chassis level, effectively preventing the chassis from tilting due to uneven ground and ensuring the stability of the entire telescopic door system. In addition, the adaptive adjustment function can reduce vibration caused by uneven ground, reducing impact and wear on the drive assembly and other components of the chassis, extending the service life of the components and reducing maintenance rates and costs.

[0025] 5. Furthermore, the adaptive adjustment function of the external drive assembly eliminates the movable connection components of traditional door rows, reducing the use of compensating movable connection components between door rows, simplifying the overall structure and reducing the design cost of the door row. It also reduces the number of failure points caused by wear or failure of movable components, improving overall reliability and stability, achieving multiple goals at one stroke.

[0026] 6. The external telescopic door drive device of the utility model has significant advantages in production, installation, use and maintenance through its modular design, highly adaptable balance adjustment, flexible installation method and miniaturized chassis design, and is highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the assembly structure of a compact external telescopic door including a preferred embodiment of the utility model;

[0028] Figure 2This is a schematic diagram of the exploded structure of the drive assembly of the compact external telescopic door drive device according to the first preferred embodiment of the present invention;

[0029] Figure 3 This is a schematic diagram of the exploded structure of the drive assembly of the compact external telescopic door drive device according to the first preferred embodiment of the present invention;

[0030] Figure 4 This is a schematic diagram of the exploded structure of the drive assembly of the compact external telescopic door drive device according to the first preferred embodiment of the present invention from another angle;

[0031] Figure 5 This is a schematic diagram of the overall structure of the drive assembly of the compact external telescopic door drive device according to the second preferred embodiment of the present utility model;

[0032] Figure 6 This is a schematic diagram of the exploded structure of the drive assembly of the compact external telescopic door drive device according to the second preferred embodiment of the present invention;

[0033] Figure 7 This is another exploded schematic diagram of the drive assembly of the compact external telescopic door drive device according to the second preferred embodiment of the present invention;

[0034] Figure 8 This is a schematic diagram from another angle of the overall structure of the driving assembly of the compact external telescopic door driving device according to the second preferred embodiment of the present invention;

[0035] Figure 9 This is a schematic exploded view from another angle of the overall structure of the drive assembly of the compact external telescopic door drive device according to the second preferred embodiment of the present invention;

[0036] Figure 10 This is a schematic diagram of the assembly state of the drive assembly of the compact external telescopic door drive device including the preferred embodiment of the utility model assembled at the connection between the telescopic door chassis and the door row;

[0037] Figure 11 This is a schematic diagram of the adjustment state of the compact external telescopic door driving device in a preferred embodiment of the present invention.

[0038] In the picture:

[0039] 10. Drive assembly; 1. Travel drive wheel; 2. Drive motor; 21. Output gear; 22. Motor mounting plate; 3. Transmission gear set; 31. Driving wheel; 32. Driven wheel; 321. Transmission shaft; 4. Rotating shaft; 5. Encapsulating casing; 6. Protective decorative cover; 20. Chassis; 30. Door row; 40. Telescopic door. DETAILED DESCRIPTION

[0040] In order to facilitate the understanding of the present invention, the technical solutions and advantages of the invention are further described in detail below in conjunction with the accompanying drawings and embodiments. Any mechanism or method not described in detail in the present invention may refer to the prior art. The specific structure and features of the present invention are described below in an illustrative manner, which should not constitute any limitation to the present invention. At the same time, any of the technical features mentioned below (including implicit or disclosed), as well as any technical features directly displayed or implied in the drawings, can be further combined or deleted between these technical features to form more other embodiments that may not be directly or indirectly mentioned in the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to enable a more thorough and comprehensive understanding of the disclosed content of the present invention.

[0041] It should be noted that the construction and arrangement of the present invention shown in a number of different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, structure, shape, and proportion of various elements) without substantially departing from the novel teachings and advantages of the subject matter described in this application. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "means plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structures. Other substitutions, modifications, changes, and omissions may be made in the design, operating conditions, and arrangement of the exemplary embodiments without departing from the scope of the present invention.

[0042] like Figure 1-11As shown, the present invention provides a compact external telescopic door drive device, which is installed on the chassis 20 of the telescopic door 40 and is used to drive the door row 30 of the telescopic door 40 to move telescopically; in this embodiment, the door row can be a door row in the prior art, such as a plurality of door frames connected by cross-links, and the present invention does not limit this. The present invention includes a drive assembly 10 arranged on the outside of the chassis; generally, the telescopic door of the present invention also includes a control module for controlling the drive assembly (not shown in the accompanying drawings); in an optional embodiment, the control module can be selectively arranged inside the chassis and electrically connected to the drive motor of the drive assembly through a circuit, and the specific setting method is not limited; in another optional embodiment, the control module can also be integrated into the drive assembly as one of the modular components of the drive assembly. The control module includes conventional electrical components such as a controller that can meet the needs of driving the telescopic door to move. The present invention does not specifically limit its setting method and working principle, and can refer to the telescopic door control module in the prior art.

[0043] To be further detailed, the drive assembly 10 of the present invention includes a walking drive wheel 1 and a drive motor 2 for providing power to the walking drive wheel 1; the drive motor 2 is electrically connected to the control module; the drive assembly is installed on the outside of the chassis, and the walking drive wheel rolls in contact with the ground under the drive of the drive motor 2, thereby driving the door row of the telescopic door to move.

[0044] In this embodiment, the number of the traveling driving wheel is at least one.

[0045] In this embodiment, the drive assembly can be produced and assembled as a separate standard module, which not only simplifies the production process and reduces the production difficulty, but also facilitates large-scale standardized manufacturing processes and significantly reduces production costs. Furthermore, since the drive assembly adopts a modular design and is installed on both sides of the chassis in an external manner, compared with the traditional telescopic door chassis, which requires customization of the design and assembly layout of the drive components according to performance requirements and the size of the internal space of the chassis, the modular external drive assembly of the utility model can be independently installed, debugged and maintained, greatly reducing the complexity of assembly and maintenance. On the other hand, there is no need to make complex changes to the interior of the door body, and it can be adapted to various door body designs and sizes, reducing the complexity of design and production, reducing design and assembly costs, and having strong flexibility.

[0046] At the same time, the drive assembly of the present invention adopts an external mounting type and does not need to be placed inside the chassis, which contributes to the miniaturization design of the chassis and the optimization of the internal space, making the chassis structure more compact. After the present invention adopts the external mounting type drive assembly, the overall volume of the chassis is greatly reduced to 1 / 3 of the volume of the traditional telescopic door chassis, which greatly improves the telescopic ratio of the telescopic door and significantly improves the space optimization of the telescopic door. The compact chassis structure is more suitable for various space-constrained application scenarios, thereby improving the adaptability of the telescopic door.

[0047] Furthermore, the drive assembly package is arranged on the outside of the chassis, which not only reduces the overall volume of the chassis, optimizes the telescopic ratio of the telescopic door, and saves the internal space of the chassis, but also enhances the sealing performance of the drive assembly, preventing the bottom of the chassis from being open to the ground, causing rainwater, dust, mud and sand to enter the chassis and corrode the various electrical components and metal components inside the chassis, thereby ensuring the use of the chassis.

[0048] Specifically, in this embodiment, the drive assembly is mounted on the outer wall of the chassis, the width of the outer wall of the chassis being 200-250 mm; a sealing base plate is provided at the bottom of the chassis. Specifically, the width refers to the side length of the chassis' side wall facing the door row. In this way, the drive assembly is packaged and arranged on the outside of the chassis. This not only reduces the overall size of the chassis, optimizes the telescopic door's telescopic ratio, and saves space within the chassis, but also enhances the sealing performance of the drive assembly, preventing rainwater, dust, and other substances from entering the chassis and corroding the various electrical and metal components within the chassis. It also prevents internal components from rusting or electrical failures due to moisture or accumulated water, thereby extending the service life of the equipment and reducing maintenance and replacement costs.

[0049] In other optional embodiments, the drive assembly can be arranged at or located at the junction of the chassis and the door row; further improving the telescopic ratio of the telescopic door, which is conducive to optimizing the maximum utilization of the space of the telescopic door.

[0050] Specifically, in this embodiment, a connecting plate (not shown in the drawings) is provided between the chassis and the door row, and the drive assembly is mounted vertically and rotatably on the outside of the connecting plate via a mounting assembly. Thus, the drive assembly is entirely mounted between the chassis and the door row, further reducing the chassis's volume while maintaining the product's aesthetically pleasing appearance, resulting in a smaller footprint for the retractable doors when folded.

[0051] Further detailing the structure of the drive assembly, the drive assembly 10 includes a transmission gear set 3 in transmission connection with the drive motor 2. The power output end of the drive motor 2 is provided with an output gear 21, which is in transmission connection with the travel drive wheel 1 via the transmission gear set 3. In this embodiment, the number and arrangement of the transmission gear sets 3 can be designed based on the number and installation locations of the travel drive wheels, including but not limited to meshing transmission, synchronous belt transmission, etc.

[0052] To be more specific, the transmission gear set 3 includes a driving wheel 31 meshingly connected to the output gear 21 and a driven wheel 32 transmission-connected to the driving wheel 31 ; the driven wheel 32 is connected to the travel drive wheel via a transmission shaft 321 .

[0053] In order to further improve the adaptability of the drive assembly of the present invention, the drive assembly can be rotatably installed in the vertical direction on the outside of the chassis through an installation component. When the two walking drive wheels encounter uneven ground, they drive the packaging shell to swing in the vertical direction to keep the chassis in a horizontal state.

[0054] Specifically, the driving assembly 10 further includes a packaging housing 5 for mounting the travel driving wheel; the travel driving wheel passes through the packaging housing 5 and is coaxially connected to the driven wheel 32 via the transmission shaft 321 .

[0055] like Figure 11 As shown, when the travel drive wheel of the present invention travels on an uneven road surface, the travel drive wheel senses the convex or concave road surface, driving the swingable package housing and internal drive assembly to swing up and down as a whole according to the uneven road surface. Therefore, the invented drive assembly can also adapt to the uneven ground and swing movement, and has better movement performance on uneven ground. The drive assembly can swing in the vertical direction through the installation component, and can perform adaptive compensatory adjustments when traveling on uneven ground, so that the chassis remains in a horizontal state, effectively preventing the chassis from tilting due to uneven ground, and ensuring the stability of the entire telescopic door system. In addition, the adaptive adjustment function of the drive assembly can reduce the vibration caused by uneven ground, reduce the impact and wear on other components of the chassis, extend the service life of the components, and reduce maintenance rate and maintenance costs.

[0056] As a further preferred embodiment, the mounting assembly includes a rotating shaft 4 mounted on the side wall of the chassis via a bearing (not shown in the drawings). One end of the rotating shaft 4 passes through the encapsulating housing 5 and is connected to the driving wheel 31. The other end of the rotating shaft 4, which passes through the side wall of the chassis, is positioned within the chassis cavity and is restrained. In this embodiment, the modular drive assembly achieves rapid installation and rotational connection with the chassis via the mounting assembly, while also improving structural stability and power transmission efficiency, simplifying assembly and maintenance.

[0057] In this embodiment, the bearings can be deep groove ball bearings or tapered roller bearings, with tapered roller bearings being preferred, as they can withstand significant axial and radial loads, facilitating adaptive adjustment of the drive assembly. The shaft, located at one end within the chassis, can be limited by installing a retaining ring, a retaining ring, or a positioning pin on the shaft, with the shaft position controlled by a locking device. This prevents axial displacement of the shaft during operation, maintaining stability and transmission accuracy. This limiter ensures stable operation of the shaft and reduces potential failures and maintenance costs.

[0058] In this embodiment, the core of the adaptive adjustment function of the drive assembly is to utilize the shaft structure so that the drive assembly can remain level when encountering uneven ground, thereby achieving smooth walking. The main process is as follows:

[0059] When the telescopic door's drive assembly is moving on the ground, if the ground is uneven, the travel drive wheels 1 on the drive assembly will be subjected to forces in different directions (causing the two travel drive wheels to be at different heights, which may cause the drive assembly chassis to tilt). In this case, the drive assembly will respond to the uneven ground and adjust the chassis's tilt angle by rotating. In other words, if one wheel on the drive assembly is subjected to greater pressure (such as encountering a depression), the drive assembly will rotate about the axis so that the other wheel on the other side is lowered to the ground, maintaining the chassis in a level state.

[0060] In this embodiment, due to the adaptive adjustment function of the external drive assembly, the movable connection components between the chassis and the door row of traditional products can be eliminated and replaced with a rigid connection, thereby reducing the use of compensating movable connection components between the door row or the door row and the chassis, simplifying the overall structure, and reducing the design cost of the door row; it also reduces the failure points caused by wear or failure of the movable components, improves the overall reliability and stability of the system, and achieves multiple goals at one stroke.

[0061] As a further preferred embodiment, the driving motor is mounted on the upper portion of the packaging housing via a motor mounting plate 22 and is driven by the output gear meshing with the driving wheel. This arrangement is beneficial to improving the integrity of the driving assembly.

[0062] In order to improve the protection effect of the drive assembly and reduce damage to components, a protective decorative cover 6 is further provided on the outside of the drive assembly, and the protective decorative cover 6 is detachably mounted on the side wall of the chassis through fasteners. In this embodiment, the protective decorative cover can not only ensure the sealing performance of the drive assembly, prevent rainwater, dust, mud and sand from entering the drive assembly, keep the internal components clean, and avoid rust or electrical failure of the internal components due to moisture or accumulated water, but also can quickly remove the protective decorative cover for operation when it is necessary to inspect or replace components such as the travel drive wheel, thereby facilitating component inspection and maintenance and improving maintenance efficiency.

[0063] Furthermore, the drive assembly is encapsulated and arranged on the outside of the chassis through a protective decorative cover, which not only saves space inside the chassis, but also enhances the sealing performance of the drive assembly, prevents rainwater, dust, etc. from entering the drive assembly, keeps internal components clean, and avoids rust or electrical failure of internal components due to moisture or accumulated water, significantly reducing wear and damage to the drive assembly, extending the service life of the equipment, and reducing maintenance and replacement costs.

[0064] In this embodiment, the shape of the protective decorative cover is not limited, as long as it can be adapted to the design of the drive assembly, and the method of fixing it to the chassis is also not limited.

[0065] In this embodiment, the protective decorative cover can be assembled by means of bolts, snaps, sliding insertion, etc., or it can be hinged to the outside of the chassis by flipping up and down with an axle pin, so as to achieve quick disassembly and assembly, facilitate inspection or maintenance, and replace the travel drive wheel, which is beneficial to the maintenance of the drive assembly.

[0066] In this embodiment, the driving motor may be a stepping motor, a servo motor, etc. in the prior art that is adapted to the performance requirements of the corresponding telescopic door.

[0067] The drive assembly of the utility model adopts an external mounting type and does not need to be placed inside the chassis. It is easy to disassemble and assemble, which also contributes to the miniaturization design of the chassis and the optimization of the internal space, making the chassis structure more compact. After the utility model adopts the external mounting type drive assembly, the overall volume of the chassis is greatly reduced to 1 / 3 of the volume of the traditional telescopic door chassis, which greatly improves the telescopic ratio of the telescopic door and significantly improves the space optimization of the telescopic door. The compact chassis structure is more suitable for various space-constrained application scenarios, thereby improving the adaptability of the telescopic door.

[0068] Furthermore, the drive assembly package is arranged on the outside of the chassis, which not only reduces the overall volume of the chassis, optimizes the telescopic ratio of the telescopic door, and saves the internal space of the chassis, but also enhances the sealing performance of the drive assembly, preventing rainwater, dust, etc. from entering the chassis to corrode the various electrical components and metal components inside the chassis, and avoiding rust or electrical failure of internal components due to moisture or accumulated water, thereby extending the service life of the equipment and reducing maintenance and replacement costs.

[0069] The above embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. For ordinary technicians in this field, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A compact external telescopic door driving device, mounted on the telescopic door chassis, used to drive the telescopic door door row to move telescopically, characterized in that: The chassis comprises a drive assembly and a control module for controlling the drive assembly; the drive assembly comprises a travel drive wheel, a drive motor for providing power to the travel drive wheel, and the drive motor is electrically connected to the control module; the drive assembly is installed outside the chassis, or located at the junction of the chassis and the door row; The travel driving wheel is driven by the driving motor to roll in contact with the ground, thereby driving the door row of the telescopic door to move.

2. The compact external telescopic door driving device according to claim 1, characterized in that: The drive assembly includes a transmission gear set that is transmission-connected to the drive motor; an output gear is provided at the power output end of the drive motor, and the output gear is transmission-connected to the travel drive wheel through the transmission gear set.

3. The compact externally mounted telescopic door driving device according to claim 2, characterized in that: The transmission gear set includes a driving wheel meshingly connected to the output gear and a driven wheel transmission-connected to the driving wheel; the driven wheel is connected to the travel drive wheel via a transmission shaft.

4. The compact externally mounted telescopic door driving device according to claim 3, characterized in that: The driving assembly further includes an encapsulated casing for mounting the travel driving wheel; the travel driving wheel is coaxially connected to the driven wheel via the transmission shaft passing through the encapsulated casing.

5. The compact externally mounted telescopic door driving device according to claim 4, characterized in that: The width of the outer side wall of the chassis is 200-250 mm; the bottom of the chassis is provided with a sealing bottom plate.

6. The compact externally mounted telescopic door driving device according to any one of claims 4 to 5, characterized in that: The driving assembly can be rotatably installed in the vertical direction on the outside of the chassis through an installation component, and the two travel driving wheels are distributed on the driving assembly at intervals along the travel direction of the door row; when the travel driving wheels encounter uneven ground, they drive the packaging shell to swing in the vertical direction to keep the chassis in a horizontal state.

7. The compact externally mounted telescopic door driving device according to claim 6, characterized in that: The mounting assembly includes a rotating shaft arranged on the side wall of the chassis through a bearing. One end of the rotating shaft passes through the packaging shell and is connected to the driving wheel, and the other end passes through the side wall of the chassis and is located in the chassis cavity and is limited.

8. The compact externally mounted telescopic door driving device according to claim 6, characterized in that: The driving motor is arranged on the upper part of the packaging housing through a motor mounting plate, and is meshed with the driving wheel for transmission through the output gear.

9. The compact externally mounted telescopic door driving device according to claim 6, characterized in that: A connecting plate is provided between the chassis and the door row, and the driving assembly is rotatably mounted on the outer side of the connecting plate via a mounting assembly in a vertical direction.

10. The compact externally mounted telescopic door driving device according to any one of claims 1 to 5 or 7 to 9, characterized in that: The outer side of the driving assembly is also covered with a protective decorative cover, and the protective decorative cover is detachably mounted on the side wall of the chassis through fasteners.

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