A stroke head structure of a tubular motor for a roller shutter door

Abstract

This utility model discloses a stroke head structure for a tubular motor of a roller shutter door, including a rotating tube and fixed frames disposed at both ends of the rotating tube. One fixed frame is equipped with a stroke control component for controlling the formation of the roller shutter door, and the other fixed frame is equipped with a drive motor capable of controlling the rotation of the rotating tube. The stroke control component includes a moving block that reciprocates along the length of the rotating tube, and contacts are provided at both ends of the moving block. The stroke control component also includes two limit switch assemblies respectively disposed on both sides of the moving block and whose positions can be adjusted. This utility model provides a buffer spring on one side of the limit switch body to buffer the limit switch body and prevent excessive impact force from damaging the limit switch body.

Description

Technical Field

[0001] This utility model relates to the field of tubular motor technology, specifically to a stroke head structure for a tubular motor of a roller shutter door. Background Technology

[0002] In roller shutter door systems, the tubular motor serves as the core drive component, and its performance and reliability directly affect the overall operation of the roller shutter door. Through its internal stroke control mechanism, the tubular motor achieves precise positioning of the roller shutter door during its ascent and descent, thereby ensuring its safe and stable operation.

[0003] Chinese patent CN214707410U discloses a quick-adjustment mechanism for the stroke of a tubular motor for a roller shutter door. The mechanism includes a lead screw, a bracket, two gears, and two limit switches. It also includes two adjusting blocks. The two gears are fixedly mounted on the output shaft of the tubular motor and one end of the lead screw, respectively, and are meshed. Each adjusting block contains a radial clamping mechanism and an axial unlocking mechanism. The radial clamping mechanism and the axial unlocking mechanism are elastically coupled. The radial clamping mechanism is used to fix the adjusting block in conjunction with the thread of the lead screw, while the axial unlocking mechanism is used to force the radial clamping mechanism to separate from the lead screw. This patent uses the lead screw to drive the adjusting blocks to contact the limit switches on both sides, thereby controlling the start and stop of the motor and thus controlling the stroke.

[0004] In this existing technology, the adjusting block moves along a predetermined path driven by a lead screw. When it contacts the limit switches located at both ends of the travel, it triggers corresponding signals, thereby controlling the start and stop of the motor and completing the precise setting and control of the travel. However, in practical applications, this traditional travel head structure has revealed some significant problems. The most prominent of these is that when the adjusting block contacts the limit switch, if the contact force is too large due to mechanical vibration, improper adjustment, or component wear, the adjusting block may impact the limit switch with a large impact force. This impact can not only cause physical damage to the limit switch, such as contact deformation, but may also cause malfunction or failure of the limit switch, thus affecting the stability and reliability of the entire travel control system. Utility Model Content

[0005] The purpose of this utility model is to provide a travel head structure for a tubular motor of a roller shutter door. By setting a buffer spring on one side of the travel switch body, the travel switch body is buffered by the buffer spring, so as to avoid excessive impact force on the travel switch body and damage to the travel switch body.

[0006] To address the problems in the prior art, this utility model provides a stroke head structure for a tubular motor of a roller shutter door, including a rotating tube and fixed frames disposed at both ends of the rotating tube. One fixed frame is equipped with a stroke control component for controlling the stroke of the roller shutter door, and the other fixed frame is equipped with a drive motor capable of controlling the rotation of the rotating tube. The stroke control component includes a moving block that reciprocates along the length of the rotating tube, and contacts are disposed at both ends of the moving block. The stroke control component also includes two limit switch assemblies respectively disposed on both sides of the moving block and capable of adjusting their positions. The limit switch assembly includes a limit switch body capable of controlling the start and stop of the drive motor, and a buffer spring for buffering the limit switch body.

[0007] Preferably, the travel control assembly includes a support frame fixed on a fixed frame, and at least two slide rods are provided on the support frame. The moving block is slidably connected to the slide rods, and the travel switch assembly includes a slide plate that can be slidably disposed on the slide rods.

[0008] Preferably, a support plate is provided on one side of the limit switch body, and the limit switch assembly further includes a guide rod that can slide on the slide plate and is connected to the support plate, with a buffer spring sleeved on the guide rod.

[0009] Preferably, the stroke control assembly further includes an adjustment assembly disposed on the top of the support frame for driving the slide plate to move.

[0010] Preferably, the adjustment assembly includes a threaded rod arranged along the length of the support frame, and the top of the support frame is also provided with a groove opened along its length. The top of the sliding plate passes through the groove and is threadedly connected to the threaded rod. One end of the threaded rod is also provided with a knob that can drive the threaded rod to rotate.

[0011] Preferably, the stroke control component includes a lead screw arranged along the length of the support frame, and the lead screw is connected to the moving block by a thread.

[0012] Preferably, the stroke control assembly further includes a coupling disposed at one end of the lead screw, and the coupling is connected to the rotating tube.

[0013] Preferably, the output end of the drive motor is connected to a second sprocket, and the end of the rotating tube near the drive motor is connected to a first sprocket. The first sprocket and the second sprocket are connected by a chain.

[0014] The advantages of this application compared to the prior art are:

[0015] 1. This application achieves effective buffering of impact force by setting a limit switch assembly, thereby improving the service life and reliability of the limit switch body. Specifically, the limit switch assembly includes a slide plate and a limit switch body, with a support plate on one side of the limit switch body. A guide rod is provided on the support plate, which is slidably connected to the slide plate, and a buffer spring is also sleeved on the guide rod. When the limit switch body is impacted, it moves under the guidance of the guide rod, and the buffer spring is compressed in the process, absorbing and dispersing the impact force, thereby preventing the limit switch body from being damaged by excessive impact force. This design significantly improves the impact resistance of the limit switch assembly, ensuring the stability and accuracy of the travel control.

[0016] 2. This application also includes an adjustment component for adjusting the position of the limit switch assembly, thereby controlling the stroke of the hose reel motor. The adjustment component, through the cooperation of a knob and a threaded rod, allows for flexible adjustment of the slide plate position. Specifically, when stroke adjustment is needed, the operator simply rotates the knob to rotate the threaded rod. The rotation of the threaded rod causes the slide plate to move along the guide rod, thus changing the overall position of the limit switch assembly. This design allows the stroke of the hose reel motor to be flexibly adjusted according to actual needs, improving the adaptability and versatility of the equipment. Attached Figure Description

[0017] Figure 1 This is a first three-dimensional structural diagram of the stroke head structure of a tubular motor for a roller shutter door according to this utility model.

[0018] Figure 2 This is a second three-dimensional structural diagram of the stroke head structure of a tubular motor for a roller shutter door according to this utility model.

[0019] Figure 3 This is a first three-dimensional structural schematic diagram of the stroke control component of the stroke head structure of a tubular motor for a roller shutter door according to this utility model.

[0020] Figure 4 This is a schematic diagram of the second three-dimensional structure of the stroke control component of the stroke head structure of a roller shutter door tubular motor according to this utility model.

[0021] Figure 5 This is a front view schematic diagram of the stroke control component of the stroke head structure of a tubular motor for a roller shutter door according to this utility model.

[0022] Figure 6 This is a three-dimensional structural diagram of the travel control component, travel switch component, and adjustment component of the travel head structure of a tubular motor for a roller shutter door according to this utility model.

[0023] The following are the labels in the diagram: 1. Fixed frame; 2. Rotating tube; 21. First sprocket; 3. Drive motor; 31. Second sprocket; 4. Stroke control assembly; 41. Support frame; 411. Slide rod; 412. Slide groove; 42. Lead screw; 421. Coupling; 43. Moving block; 431. Contact; 44. Limit switch assembly; 441. Slide plate; 442. Limit switch body; 4421. Support plate; 4422. Guide rod; 4423. Buffer spring; 45. Adjustment assembly; 451. Threaded rod; 4511. Knob. Detailed Implementation

[0024] To further understand the features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments.

[0025] Reference Figures 1-6 As shown, this utility model provides a stroke head structure for a tubular motor of a roller shutter door, including a rotating tube 2 and fixed frames 1 disposed at both ends of the rotating tube 2. One fixed frame 1 is provided with a stroke control component 4 for controlling the stroke of the roller shutter door, and the other fixed frame 1 is equipped with a drive motor 3 capable of controlling the rotation of the rotating tube 2. The stroke control component 4 includes a moving block 43 that reciprocates along the length of the rotating tube 2, and the two ends of the moving block 43 are provided with contacts 431. The stroke control component 4 also includes two limit switch components 44 respectively disposed on both sides of the moving block 43 and whose positions can be adjusted. The limit switch components 44 include a limit switch body 442 capable of controlling the start and stop of the drive motor 3, and the limit switch components 44 also include a buffer spring 4423 for buffering the limit switch body 442.

[0026] The rotating tube 2 enables the movable block 43 to move. When the movable block 43 moves, the contacts 431 at both ends of the movable block 43 come into contact with the limit switch assembly 44. At this time, the limit switch body 442 is triggered, sending a signal to the control system (not shown in the figure, representing prior art) to control the drive motor 3 to stop running, thereby stopping the raising and lowering of the roller shutter door. During the contact between the contacts 431 and the limit switch body 442, the buffer spring 4423 cushions the limit switch body 442, preventing damage to the limit switch body 442 due to impact.

[0027] The travel control assembly 4 includes a support frame 41 fixed on a fixed frame 1. At least two slide rods 411 are also provided on the support frame 41. A movable block 43 is slidably connected to the slide rods 411, and the slide rods 411 provide a sliding track for the movable block 43. The slidable connection between the movable block 43 and the slide rods 411 allows the movable block 43 to reciprocate on the slide rods 411. The travel switch assembly 44 includes a slide plate 441 slidably mounted on the slide rods 411.

[0028] A support plate 4421 is provided on one side of the limit switch body 442. The limit switch assembly 44 also includes a guide rod 4422 that can slide on the slide plate 441 and is connected to the support plate 4421. A buffer spring 4423 is sleeved on the guide rod 4422. The guide rod 4422 provides guidance for the limit switch body 442, ensuring that the limit switch body 442 can move along the guide rod 4422 when it is impacted, thereby triggering the buffering effect of the buffer spring 4423.

[0029] The stroke control assembly 4 also includes an adjustment assembly 45 disposed on the top of the support frame 41 and used to drive the slide plate 441 to move. The adjustment assembly 45 includes a threaded rod 451 disposed along the length of the support frame 41. The top of the support frame 41 is also provided with a groove 412 disposed along its length. The top of the slide plate 441 passes through the groove 412 and is threadedly connected to the threaded rod 451. One end of the threaded rod 451 is also provided with a knob 4511 that can drive the threaded rod 451 to rotate.

[0030] The operator can rotate knob 4511. Knob 4511 drives threaded rod 451 to rotate. Since slide plate 441 is connected to threaded rod 451 by threads, slide plate 441 will move along threaded rod 451. The movement of slide plate 441 will drive the limit switch assembly 44 to move as a whole, thereby changing the contact position between limit switch body 442 and contact 431, thus realizing the control of the roller shutter door's travel.

[0031] The stroke control assembly 4 includes a lead screw 42 arranged along the length of the support frame 41, and the lead screw 42 is threadedly connected to the moving block 43. The stroke control assembly 4 also includes a coupling 421 disposed at one end of the lead screw 42, and the coupling 421 is connected to the rotating tube 2. The output end of the drive motor 3 is connected to a second sprocket 31, and the end of the rotating tube 2 near the drive motor 3 is connected to a first sprocket 21. The first sprocket 21 and the second sprocket 31 are connected by a chain.

[0032] After the drive motor 3 starts, its output drives the second sprocket 31 to rotate. The second sprocket 31 transmits rotational power to the first sprocket 21 via a chain, which in turn drives the rotating tube 2 to rotate. The rotation of the rotating tube 2 is transmitted to the lead screw 42 via the coupling 421, causing the lead screw 42 to rotate synchronously. The rotation of the lead screw 42 drives the moving block 43, which is threadedly connected to it, to move along the axis of the lead screw 42. During the movement of the moving block 43, the contacts 431 at both ends of it will contact the limit switch body 442 of the limit switch assembly 44. The limit switch body 442 sends a signal to the control system to control the drive motor 3 to stop, thereby realizing the travel control of the roller shutter door.

[0033] The above embodiments only illustrate one or more implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A stroke head structure for a tubular motor of a roller shutter door, characterized in that: The device includes a rotating tube (2) and fixed frames (1) at both ends of the rotating tube (2). One fixed frame (1) is equipped with a stroke control component (4) for controlling the stroke of the roller shutter door, and the other fixed frame (1) is equipped with a drive motor (3) that can control the rotation of the rotating tube (2). The stroke control component (4) includes a moving block (43) that reciprocates along the length of the rotating tube (2), and the two ends of the moving block (43) are provided with contacts (431). The stroke control component (4) also includes two limit switch components (44) that are respectively arranged on both sides of the moving block (43) and can be adjusted in position. The limit switch component (44) includes a limit switch body (442) that can control the start and stop of the drive motor (3), and the limit switch component (44) also includes a buffer spring (4423) for buffering the limit switch body (442).

2. The stroke head structure of a tubular motor for a roller shutter door according to claim 1, characterized in that: The stroke control assembly (4) includes a support frame (41) fixed on a fixed frame (1), and at least two slide rods (411) are provided on the support frame (41). The moving block (43) is slidably connected to the slide rods (411). The limit switch assembly (44) includes a slide plate (441) that can be slidably disposed on the slide rods (411).

3. The stroke head structure of a tubular motor for a roller shutter door according to claim 2, characterized in that: A support plate (4421) is provided on one side of the limit switch body (442), and the limit switch assembly (44) further includes a guide rod (4422) that can slide on the slide plate (441) and is connected to the support plate (4421), and a buffer spring (4423) is sleeved on the guide rod (4422).

4. The stroke head structure of a tubular motor for a roller shutter door according to claim 3, characterized in that: The stroke control assembly (4) also includes an adjustment assembly (45) disposed on top of the support frame (41) and used to drive the slide plate (441) to move.

5. The stroke head structure of a tubular motor for a roller shutter door according to claim 4, characterized in that: The adjustment assembly (45) includes a threaded rod (451) arranged along the length of the support frame (41). The top of the support frame (41) is also provided with a groove (412) opened along its length. The top of the sliding plate (441) passes through the groove (412) and is threadedly connected to the threaded rod (451). One end of the threaded rod (451) is also provided with a knob (4511) that can drive the threaded rod (451) to rotate.

6. The stroke head structure of a tubular motor for a roller shutter door according to claim 1, characterized in that: The stroke control component (4) includes a lead screw (42) arranged along the length of the support frame (41), and the lead screw (42) is connected to the moving block (43) by a thread.

7. The stroke head structure of a tubular motor for a roller shutter door according to claim 6, characterized in that: The stroke control assembly (4) also includes a coupling (421) disposed at one end of the lead screw (42), and the coupling (421) is connected to the rotating tube (2).

8. The stroke head structure of a tubular motor for a roller shutter door according to claim 1, characterized in that: The output end of the drive motor (3) is connected to a second sprocket (31), and the end of the rotating tube (2) near the drive motor (3) is connected to a first sprocket (21). The first sprocket (21) and the second sprocket (31) are connected by a chain.

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