A locking device for a folding retractable door

Abstract

The utility model discloses a locking device of collapsible telescopic door relates to telescopic door technical field, including the head, the bottom of head is provided with drive bin, is provided with the travel wheel of bottom of each corner of head to and drive the drive assembly of drive travel wheel, drive assembly is two groups, and every group drive assembly drives two travel wheel. The utility model has the beneficial effect that: through electromagnetic drive force promotes the locking piece to overcome the elasticity of tension spring and moves forward, makes its action end and drive assembly form firm mechanical engagement, successfully realized from pure electric drive to mechanical locking function conversion, solved the security risk that traditional telescopic door only relied on motor self -lock exists, significantly promoted the safety performance and use reliability of equipment.

Description

Technical Field

[0001] This utility model relates to the field of telescopic gate technology, and in particular to a locking device for a foldable telescopic gate. Background Technology

[0002] A telescopic gate consists of a motor head and gate panels. The gate panels extend and retract by moving the motor head. Currently, the motor head typically moves by driving wheels via an internal motor. When the motor stops rotating, the telescopic gate relies on the motor's self-locking torque to maintain its position, i.e., it is in a locked state. However, this locking method has a very low safety factor. When a sufficiently large external force is applied to push / pull the motor head, it can still overcome the motor's self-locking torque, causing the telescopic gate to move unexpectedly, posing a safety hazard. Utility Model Content

[0003] In view of the above-mentioned problems in the prior art, this utility model is proposed.

[0004] The purpose of this invention is to provide a locking device for a foldable telescopic gate, which aims to solve the safety risks associated with existing telescopic gates that rely solely on motor self-locking.

[0005] To solve the above technical problems, the present invention provides the following technical solution: a locking device for a foldable telescopic gate, including a machine head, a drive compartment at the bottom of the machine head, travel wheels at the bottom of each corner of the machine head, and a drive assembly for driving the travel wheels. The drive assembly consists of two sets, and each set of drive assemblies drives two travel wheels.

[0006] The locking unit includes a base fixedly installed at the bottom of the drive compartment cavity, a locking member disposed on the base, a tension spring, and a compression assembly;

[0007] The tension spring acts on the locking member, providing it with a tensile force that separates its active end from the driving assembly;

[0008] When energized, the pressing component drives the locking member to overcome the elastic force of the tension spring, so that the working end of the locking member mechanically engages with the driving component to lock the driving component.

[0009] As a preferred embodiment of the locking device for the foldable telescopic gate of this utility model, the pressing component includes an electromagnet fixedly mounted on the base and a permanent magnet mounted on the locking member.

[0010] When energized, the electromagnet and the permanent magnet are magnetically repelled on opposite sides.

[0011] As a preferred embodiment of the locking device for the foldable telescopic gate of this utility model, the locking unit further includes a limiting seat fixedly installed on the base, and limiting grooves opened on both sides of the limiting seat.

[0012] The locking component includes a locking plate slidably disposed within the limiting seat, a limiting block fixedly disposed on both sides of the locking plate and located within the limiting groove, and a slot disposed on the top of the locking plate.

[0013] The permanent magnet is fixedly installed at the bottom of the locking plate.

[0014] As a preferred embodiment of the locking device for the foldable telescopic gate of this utility model, one end of the tension spring is connected to the base, and the other end is connected to the locking plate.

[0015] As a preferred embodiment of the locking device for the foldable telescopic gate of this utility model, the driving assembly includes a motor fixedly disposed at the bottom of the inner cavity of the driving compartment, a transmission gear fixedly disposed at the output end of the motor, a driven gear that rotates synchronously with the traveling wheel, and a transmission belt connecting the transmission gear and the driven gear.

[0016] The slot engages with the teeth of the transmission gear.

[0017] As a preferred embodiment of the locking device for the foldable telescopic gate of this utility model, it includes a tensioning assembly for tensioning the transmission belt;

[0018] The tensioning assembly includes a guide rail fixedly disposed on the lower surface of the machine head, a slider slidably disposed on the guide rail, a connecting frame fixedly mounted on the slider, a compression wheel fixedly disposed on the connecting frame and always pressing against the outer side of the transmission belt, a limiting plate fixedly connected to the bottom of the machine head, a plug rod fixedly disposed on one side of the connecting frame, and a spring disposed between the connecting frame and the limiting plate.

[0019] The spring provides the connecting frame with a thrust that causes the extrusion wheel to press against the transmission belt, and the insert rod passes through the spring and is slidably connected to the limiting plate.

[0020] The beneficial effects of the locking device of the foldable telescopic gate of this utility model are as follows: the locking component is pushed forward by electromagnetic driving force to overcome the elastic force of the tension spring, so that its working end forms a firm mechanical engagement with the driving component, successfully realizing the functional conversion from pure electric drive to mechanical locking, solving the safety hazards of traditional telescopic gates that rely solely on motor self-locking, and significantly improving the safety performance and reliability of the equipment. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of this utility model.

[0023] Figure 2 This is a schematic diagram of the internal structure of the drive compartment in this utility model.

[0024] Figure 3 This is a schematic diagram of the bottom structure of the machine head in this utility model.

[0025] Figure 4 This is a cross-sectional view of the drive compartment in this utility model.

[0026] Figure 5 This is a schematic diagram of the locking unit in this utility model.

[0027] Figure 6 This is an exploded view of the locking unit in this utility model.

[0028] Figure 7 This is an exploded view of the tensioning component in this utility model.

[0029] In the diagram: 1. Machine head; 11. Drive chamber; 12. Traveling wheel; 2. Drive assembly; 21. Motor; 22. Transmission gear; 23. Driven gear; 24. Transmission belt; 3. Locking unit; 31. Base; 32. Locking element; 321. Locking plate; 322. Limiting block; 323. Slot; 33. Tension spring; 34. Extrusion assembly; 341. Electromagnet; 342. Permanent magnet; 35. Limiting seat; 36. Limiting groove; 4. Tensioning assembly; 41. Guide rail; 42. Slider; 43. Connecting frame; 44. Extrusion wheel; 46. Limiting plate; 47. Insert rod; 48. Spring. Detailed Implementation

[0030] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0031] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0033] Example 1

[0034] Reference Figures 1 to 7 As shown, this is the first embodiment of the present invention. This embodiment provides a locking device for a foldable telescopic gate, including a machine head 1, a drive compartment 11 at the bottom of the machine head 1, travel wheels 12 at the bottom of each corner of the machine head 1, and a drive assembly 2 for driving the travel wheels 12. The drive assembly 2 consists of two sets, and each set of drive assembly 2 drives two travel wheels 12.

[0035] The locking unit 3 includes a base 31 fixedly installed at the bottom of the inner cavity of the drive chamber 11, a locking member 32 disposed on the base 31, a tension spring 33, and a compression assembly 34;

[0036] The tension spring 33 acts on the locking member 32, providing it with a tension force that separates its active end from the drive assembly 2;

[0037] When the compression assembly 34 is energized, it drives the locking member 32 to overcome the elastic force of the tension spring 33, so that the working end of the locking member 32 forms a mechanical engagement with the drive assembly 2 to lock the drive assembly 2.

[0038] It should be noted that: the engine head 1, as the main load-bearing body, has a drive compartment 11 at its bottom that houses the drive assembly 2 and the locking unit 3. The two sets of drive assemblies 2 independently control the travel wheels 12 on both sides. The symmetrical layout not only provides driving force but also provides a basis for the differential steering of the engine head. The locking unit 3 provides a continuous unlocking and restoring force through the tension spring 33 and a precise locking driving force through the compression assembly 34, forming a stable and reliable force balance system.

[0039] In use: When the telescopic gate needs to enter the locked state, the control system sends an energizing command to the pressing component 34. The pressing component 34 immediately generates a strong electromagnetic driving force, pushing the locking member 32 to move forward against the elastic force of the tension spring 33, so that its working end forms a firm mechanical engagement with the driving component 2, thereby achieving forced locking of the entire driving system. When it is necessary to unlock, the pressing component 34 is de-energized, the electromagnetic force disappears, and the restoring force of the tension spring 33 immediately pulls the locking member 32 back to its original position, completely separating it from the driving component 2 and restoring the free operation state of the driving system.

[0040] In summary: By using electromagnetic driving force to push the locking component 32 to overcome the elastic force of the tension spring 33 and move forward, the active end of which forms a firm mechanical engagement with the driving component 2, the functional conversion from pure electric drive to mechanical locking is successfully realized. This solves the safety hazard of traditional telescopic gates that rely solely on the self-locking of the motor 21, and significantly improves the safety performance and reliability of the equipment.

[0041] like Figures 5 to 6 As shown, in a preferred embodiment, the extrusion assembly 34 includes an electromagnet 341 fixedly disposed on the base 31 and a permanent magnet 342 disposed on the locking member 32;

[0042] When energized, the opposing surfaces of electromagnet 341 and permanent magnet 342 repel each other magnetically.

[0043] It should be noted that the electromagnet 341 and the permanent magnet 342 use the principle of magnetic repulsion to provide locking driving force. The electromagnet 341 is fixedly installed on the base 31 to ensure the stability and reliability of the power supply line. The permanent magnet 342 moves together with the locking component 32, realizing non-contact driving, avoiding mechanical wear, and extending service life. The magnetic repulsion working mode can also provide the maximum instantaneous thrust to ensure a fast response of the locking action.

[0044] In use: When the sliding gate needs to be locked, the control system supplies power to the electromagnet 341. The electromagnet 341 immediately generates a strong magnetic field with the same polarity as the permanent magnet 342. The magnetic repulsion between the two pushes the locking element 32 to move rapidly towards the drive assembly 2, achieving reliable locking. When unlocking is required, the electromagnet 341 is de-energized, the magnetic field disappears quickly, the magnetic repulsion is immediately released, and the locking element 32 quickly resets under the restoring force of the tension spring 33, ensuring that the drive system resumes operation in a timely manner.

[0045] In summary, the locking device achieves precise power control through the principle of magnetic repulsion, with fast response speed and reliable operation, providing a stable power guarantee for the entire locking system.

[0046] like Figures 5 to 6 As shown, in a preferred embodiment, the locking unit 3 further includes a limiting seat 35 fixedly installed on the base 31, and limiting grooves 36 formed on both sides of the limiting seat 35;

[0047] The locking member 32 includes a locking plate 321 that is slidably disposed in the limiting seat 35, a limiting block 322 that is fixedly disposed on both sides of the locking plate 321 and located in the limiting groove 36, and a slot 323 disposed on the top of the locking plate 321.

[0048] The permanent magnet 342 is fixedly installed at the bottom of the locking plate 321.

[0049] It should be noted that: the limiting seat 35 provides a sliding track for the locking plate 321 to ensure the absolute straightness of its movement trajectory. The limiting block 322 forms a guide slide in the limiting groove 36, which effectively prevents the locking plate 321 from deflecting, shaking or jamming during the movement. As a direct mechanical actuation component, the locking plate 321 has a slot 323 on its top for precise meshing with the transmission gear 22 of the drive system to ensure that the contact area and force distribution during locking reach the optimal state.

[0050] In use: The locking plate 321 moves in a straight line under the guidance of the limit seat 35. When the electromagnet 341 is energized and generates magnetic repulsion, it pushes the locking plate 321 to slide upward smoothly, so that the slot 323 is accurately embedded in the tooth groove of the transmission gear 22, forming a firm mechanical interlock. When the electromagnet 341 is de-energized, the restoring force of the tension spring 33 pulls the locking plate 321 to slide downward along the original trajectory to reset. The whole process is smooth and stable, without impact or jamming.

[0051] like Figure 5 As shown, in a preferred embodiment, one end of the tension spring 33 is connected to the base 31, and the other end is connected to the locking plate 321.

[0052] In use: During the unlocking process, the contraction force of the tension spring 33 acts directly and effectively on the locking plate 321, providing stable and continuous reset power, ensuring that the locking component can be quickly and completely separated from the drive system. During the locking process, as the locking plate 321 moves, the tension spring 33 is smoothly stretched, storing the necessary elastic potential energy, making full preparation for the next unlocking action, forming a complete working cycle.

[0053] like Figures 4 to 5 As shown, in a preferred embodiment, the drive assembly 2 includes a motor 21 fixedly disposed at the bottom of the inner cavity of the drive chamber 11, a transmission gear 22 fixedly disposed at the output end of the motor 21, a driven gear 23 rotating synchronously with the travel wheel 12, and a transmission belt 24 connecting the transmission gear 22 and the driven gear 23.

[0054] The slot 323 engages with the teeth of the transmission gear 22.

[0055] It should be noted that: the motor 21 serves as the power source, and through the efficient transmission chain composed of the transmission gear 22, the transmission belt 24 and the driven gear 23, the power is reliably transmitted to the traveling wheel 12. The transmission gear 22 serves as the locking point, and the drive gear 22 directly engages with the teeth of the transmission gear 22 through the slot 323 to achieve locking from the power source. One locking point can control multiple traveling wheels 12.

[0056] In use: During normal operation, the motor 21 drives the traveling wheel 12 to rotate smoothly through the transmission system, realizing the opening and closing of the telescopic gate. When entering the locked state, the slot 323 of the locking plate 321 precisely engages with the tooth groove of the transmission gear 22. Due to the self-locking characteristic of the gear transmission, the entire transmission system is firmly fixed, and the traveling wheel 12 cannot rotate at all, thus achieving absolute locking of the gate head. When unlocking, the locking plate 321 quickly disengages from the transmission gear 22, and the entire transmission system immediately returns to a free-running state.

[0057] like Figures 3 to 7 As shown, in a preferred embodiment, it also includes a tensioning assembly 4 for tensioning the drive belt 24;

[0058] The tensioning assembly 4 includes a guide rail 41 fixedly mounted on the lower surface of the machine head 1, a slider 42 slidably mounted on the guide rail 41, a connecting frame 43 fixedly mounted on the slider 42, a pressing wheel 44 fixedly mounted on the connecting frame 43 and always pressing the outer side of the transmission belt 24, a limiting plate 46 fixedly connected to the bottom of the machine head 1, a plug rod 47 fixedly mounted on one side of the connecting frame 43, and a spring 48 disposed between the connecting frame 43 and the limiting plate 46.

[0059] Spring 48 provides a thrust to the connecting frame 43 to press the extrusion wheel 44 against the transmission belt 24, and insert rod 47 passes through spring 48 and is slidably connected to limit plate 46.

[0060] It should be noted that: the tensioning component 4, through the continuous pressure of the spring 48, ensures that the extrusion wheel 44 is always in close contact with the transmission belt 24 with appropriate pressure, which can automatically compensate for the loosening caused by wear and elongation of the transmission belt 24 due to long-term use. The cooperation between the guide rail 41 and the slider 42 ensures that the extrusion wheel 44 always moves in the correct direction. The insertion rod 47 and the limiting plate 46 constitute a stable guiding system to prevent the component from deviating during movement and can automatically adjust the tension according to the actual state of the transmission belt 24.

[0061] In use: Spring 48 continuously applies precise pressure to the compression roller 44 through the connecting bracket 43, ensuring that the compression roller 44 always maintains optimal pressure against the working surface of the transmission belt 24. When the transmission belt 24 becomes loose due to natural elongation or wear after prolonged use, spring 48 automatically pushes the entire tensioning assembly 4 forward to compensate for the looseness in real time, always maintaining the ideal tension of the transmission belt 24. Automatic adjustment ensures that the transmission system always operates in optimal condition.

[0062] Importantly, the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A locking device for a foldable telescopic gate, comprising a head (1), a drive compartment (11) at the bottom of the head (1), travel wheels (12) at the bottom of each corner of the head (1), and a drive assembly (2) for driving the travel wheels (12), wherein the drive assembly (2) comprises two sets, and each set of drive assemblies (2) drives two of the travel wheels (12), characterized in that: The locking unit (3) includes a base (31) fixedly installed at the bottom of the inner cavity of the drive chamber (11), a locking member (32) disposed on the base (31), a tension spring (33) and a compression assembly (34). The tension spring (33) acts on the locking member (32) to provide it with a tension that separates its working end from the drive assembly (2); When the compression assembly (34) is energized, it drives the locking member (32) to overcome the elastic force of the tension spring (33), so that the working end of the locking member (32) is mechanically engaged with the driving assembly (2) to lock the driving assembly (2).

2. The locking device for the foldable telescopic gate as described in claim 1, characterized in that: The extrusion assembly (34) includes an electromagnet (341) fixedly mounted on the base (31) and a permanent magnet (342) mounted on the locking member (32). When energized, the electromagnet (341) and the permanent magnet (342) are magnetically repelled on opposite sides.

3. The locking device for the foldable telescopic gate as described in claim 2, characterized in that: The locking unit (3) also includes a limiting seat (35) fixedly installed on the base (31) and limiting grooves (36) opened on both sides of the limiting seat (35). The locking member (32) includes a locking plate (321) slidably disposed in the limiting seat (35), a limiting block (322) fixedly disposed on both sides of the locking plate (321) and located in the limiting groove (36), and a slot (323) disposed on the top of the locking plate (321). The permanent magnet (342) is fixedly installed at the bottom of the locking plate (321).

4. The locking device for the foldable telescopic gate as described in claim 3, characterized in that: One end of the tension spring (33) is connected to the base (31), and the other end is connected to the locking plate (321).

5. The locking device for the foldable telescopic gate as described in claim 3, characterized in that: The drive assembly (2) includes a motor (21) fixedly disposed at the bottom of the inner cavity of the drive chamber (11), a transmission gear (22) fixedly disposed at the output end of the motor (21), a driven gear (23) rotating synchronously with the travel wheel (12), and a transmission belt (24) connecting the transmission gear (22) and the driven gear (23). The slot (323) engages with the teeth of the transmission gear (22).

6. The locking device for the foldable telescopic gate as described in claim 5, characterized in that: It also includes a tensioning assembly (4) for tensioning the drive belt (24); The tensioning assembly (4) includes a guide rail (41) fixedly disposed on the lower surface of the machine head (1), a slider (42) slidably disposed on the guide rail (41), a connecting frame (43) fixedly mounted on the slider (42), a pressing wheel (44) fixedly disposed on the connecting frame (43) and always pressing the outside of the transmission belt (24), a limiting plate (46) fixedly connected to the bottom of the machine head (1), a plug rod (47) fixedly disposed on one side of the connecting frame (43), and a spring (48) disposed between the connecting frame (43) and the limiting plate (46). The spring (48) provides the connecting frame (43) with a thrust that causes the extrusion wheel (44) to press against the transmission belt (24), and the insert (47) passes through the spring (48) and is slidably connected to the limiting plate (46).

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