Waterproof structure of telescopic device

Abstract

The utility model relates to a waterproof structure of a telescopic device. The waterproof structure comprises a driving motor, a telescopic rod, a fixed seat and a shell, the driving motor is arranged on the fixed seat; the telescopic rod penetrates through and is connected with the fixed seat; the shell is arranged on the driving motor and the fixed seat in a sleeving manner; the shell comprises a first shell, a second shell and a third shell; the first shell covers the fixed seat on one side, far away from the driving motor, of the telescopic rod; the second shell covers the fixed seat on the same side with the driving motor; the third shell covers the driving motor; wherein the first shell, the second shell and the third shell are connected through seam allowance structures. According to the utility model, through the seam allowance structure and a physical partition mode, the permeation of water can be effectively prevented, and the influence of water on internal electronic components is reduced.

Description

Technical Field

[0001] This utility model relates to the field of waterproofing technology, and in particular to a waterproof structure for telescopic devices. Background Technology

[0002] Electric telescopic poles can be braked or extended by an electric motor, making them easy to operate. Users can easily adjust the length, eliminating the hassle of manual adjustment.

[0003] However, electric telescopic poles contain motors and other electronic components that are highly sensitive to moisture. Insufficient waterproofing can cause electrical malfunctions, affecting the normal operation of the equipment. Furthermore, since the motor is mounted on the telescopic pole, its housing must be a separate unit for assembly. This separate housing design creates seams, which can become weak points for moisture penetration, compromising the overall waterproofing effectiveness.

[0004] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a waterproof structure for telescopic devices to improve their waterproof performance.

[0006] The technical solution of this utility model is as follows:

[0007] A waterproof structure for a telescopic device, characterized in that the waterproof structure includes a drive motor, a telescopic rod, a fixed base, and a housing; the drive motor is mounted on the fixed base; the telescopic rod passes through and connects to the fixed base; the housing is sleeved on the drive motor and the fixed base; the housing includes a first housing, a second housing, and a third housing; the first housing covers the fixed base on the side of the telescopic rod away from the drive motor; the second housing covers the fixed base on the same side as the drive motor; the third housing covers the drive motor; wherein the first housing, the second housing, and the third housing are connected by a stop structure.

[0008] A further technical solution is that the telescopic rod includes a sleeve and a screw; a driven nut is provided on the screw; a third sealing ring is provided between the driven nut and the screw; the driven nut is connected to the drive motor through a gear transmission assembly.

[0009] A further technical solution is that a first annular groove is formed on the outer side of the driven nut, and a first sealing ring is provided in the first annular groove; the first sealing ring fills the gap between the sleeve and the outer shell.

[0010] A further technical solution is that a second annular groove is formed on the sleeve; a second sealing ring is provided in the second annular groove; and the second sealing ring fills the gap between the sleeve and the outer shell.

[0011] A further technical solution is that a baffle is provided inside the second housing; the baffle and the second housing together form a partition cavity; and the cable connecting the drive motor passes through the partition cavity.

[0012] A further technical solution is that a sealing ring is provided between the cable and the second housing; the sealing ring is sleeved on the cable; at least two annular flanges are provided on the outer side of the sealing ring; one annular flange is provided on the inner side of the second housing, and the other annular flange is provided on the outer side of the second housing.

[0013] A further technical solution is to fill the partition cavity with sealant.

[0014] A further technical solution is that a first convex stop is provided on the outer edge of the first housing; and concave stops are respectively provided on the second housing and the third housing to engage with the first convex stop.

[0015] A further technical solution is that a second protruding stop is provided on the outer edge of the second housing near the third housing; a groove is opened on the third housing to engage with the second protruding stop.

[0016] A further technical solution is that the first housing, the second housing, and the third housing are screwed together to connect to the fixing base.

[0017] The beneficial technical effects of this utility model are as follows:

[0018] (1) The waterproof structure of the telescopic device in this utility model consists of a first shell, a second shell, and a third shell, which are connected by a stop structure. Along the axis of the telescopic rod, the first shell is positioned opposite the second and third shells. That is, the stop structures between the first and second shells, and between the first and third shells, are vertically arranged, guiding moisture at the joints between the first and second shells, and moisture flowing along the joints between the first and third shells, downwards along the stop structure and away from the shell. Simultaneously, the stop structure between the second and third shells connects with the vertically arranged stop structure, meaning that moisture flowing along the joints between the second and third shells is also affected and flows downwards along the stop structure and away from the shell. The stop structure, through physical isolation, effectively prevents water penetration and reduces the impact of water on internal electronic components.

[0019] (2) Furthermore, a partition cavity is provided inside the second housing, through which the cable connecting the drive motor passes before connecting to the drive motor. The partition cavity can effectively isolate moisture entering the housing along the cable, preventing moisture from affecting the electronic components inside the housing.

[0020] (3) Furthermore, the partition cavity is filled with sealant, which further enhances the waterproof performance of the outer shell. The sealant also fixes the position of the cable, especially the cable sheath. This reduces the displacement between the cable sheath and the cable core, preventing the cable core from being exposed and causing safety hazards. Attached Figure Description

[0021] Figure 1 A three-dimensional structural diagram of the waterproof structure of the telescopic device of this utility model is shown.

[0022] Figure 2 The diagram shows the waterproof structure of the telescopic device of this utility model, with the second and third shells hidden in a three-dimensional structural diagram.

[0023] Figure 3 The diagram shows the waterproof structure of the telescopic device of this utility model, with a three-dimensional structural schematic diagram after the first and third shells are hidden.

[0024] Figure 4 The diagram shows the waterproof structure of the telescopic device of this utility model, with a three-dimensional structural schematic diagram showing the first and second shells hidden.

[0025] Figure 5 This diagram shows a three-dimensional structural schematic of the third housing in the waterproof structure of the telescopic device of this invention.

[0026] Figure 6 A partial vertical cross-sectional schematic diagram of the waterproof structure of the telescopic device of this utility model is shown.

[0027] Marked in the attached diagram:

[0028] 1. Telescopic rod; 11. Sleeve; 111. Second annular groove; 112. Second sealing ring; 12. Screw; 2. Drive motor; 3. Gear transmission assembly; 4. Driven nut; 41. First annular groove; 42. First sealing ring; 43. Third sealing ring; 5. Fixing base; 6. Housing; 61. First housing; 611. First convex stop; 62. Second housing; 621. Second convex stop; 622. Baffle; 623. Partition cavity; 63. Third housing; 631. Concave stop; 7. Cable; 8. Sealing ring; 81. Annular flange. Detailed Implementation

[0029] To make the objectives, features, and advantages of this utility model more apparent and understandable, please refer to the accompanying drawings. It should be noted that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes and to aid those skilled in the art in understanding and reading the content disclosed herein. They are not intended to limit the implementation conditions of this utility model and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to the size, without affecting the effects and objectives achieved by this utility model, should still fall within the scope of the technical content disclosed in this utility model.

[0030] In the description of this utility model, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] Figure 1 A three-dimensional structural diagram of the waterproof structure of the telescopic device of this utility model is shown. Figure 2 The diagram shows the waterproof structure of the telescopic device of this utility model, with the second and third shells hidden in a three-dimensional structural diagram. Figure 3 The diagram shows the waterproof structure of the telescopic device of this utility model, with a three-dimensional structural schematic diagram after the first and third shells are hidden. Figure 4 This diagram shows the waterproof structure of the telescopic device of this invention, with a three-dimensional structural schematic showing the first and second housings hidden. Please refer to it. Figure 1 , Figure 2 , Figure 3 and Figure 4 The waterproof structure of the telescopic device includes a drive motor 2, a telescopic rod 1, a fixed base 5, and a housing 6. The extension and retraction of the telescopic rod 1 is controlled by the drive motor 2, which is mounted on the fixed base 5. The telescopic rod 1 passes through and connects to the fixed base 5. Specifically, the sleeve 11 of the telescopic rod 1 has a slot perpendicular to the telescopic rod 1, which fixes the positional relationship between the telescopic rod 1 and the fixed base 5. The housing 6 is fitted onto the drive motor 2 and the fixed base 5. The housing 6 includes a first housing 61, a second housing 62, and a third housing 63. The first housing 61 covers the side of the fixed base 5 away from the drive motor 2 of the telescopic rod 1. The second housing 62 covers the fixed base 5 on the same side as the drive motor 2. The third housing 63 covers the drive motor 2. The first housing 61, the second housing 62, and the third housing 63 are connected by a stop structure.

[0032] Specifically, a first convex stop 611 is provided on the outer edge of the first housing 61. Concave stops 631 are respectively provided on the second housing 62 and the third housing 63 to engage with the first convex stop 611. A second convex stop 621 is provided on the outer edge of the second housing 62 near the third housing 63. A groove is provided on the third housing 63 to engage with the second convex stop 621. The first housing 61, second housing 62, and third housing 63 are connected to the fixing seat 5 by screws. Along the axis of the telescopic rod 1, the first housing 61 is located on the opposite side of the second housing 62 and the third housing 63. That is, the stop structures between the first housing 61 and the second housing 62, and between the first housing 61 and the third housing 63, are vertically arranged, so that moisture flowing along the seam between the first housing 61 and the second housing 62, and between the first housing 61 and the third housing 63, will be guided downwards along the stop and leave the outer housing 6. Meanwhile, the stop between the second housing 62 and the third housing 63 is connected to the vertically arranged stop. That is, water flowing along the joint between the second housing 62 and the third housing 63 will also be affected and flow downwards along the stop to leave the outer casing 6. The stop structure can effectively prevent water penetration by physically isolating the water and reduce the impact of water on the internal electronic components.

[0033] Figure 5 This diagram shows a three-dimensional structural schematic of the third housing in the waterproof telescopic device of this invention. Please refer to it. Figure 1 , Figure 2 and Figure 5 A baffle 622 is provided inside the second housing 62. The baffle 622 and the second housing 62 enclose a partition cavity 623. The cable 7 connecting the drive motor 2 passes through the partition cavity 623. The partition cavity 623 can effectively isolate moisture entering the housing 6 along the cable 7, preventing moisture from affecting the electronic components inside the housing 6.

[0034] Preferably, a sealing ring 8 is provided between the cable 7 and the second housing 62. The sealing ring 8 is sleeved on the cable 7. The sealing ring 8 enhances the sealing performance between the cable 7 and the second housing 62. At least two annular flanges 81 are provided on the outer side of the sealing ring 8. One annular flange 81 is provided on the inner side of the second housing 62, and the other annular flange 81 is provided on the outer side of the second housing 62. The two annular flanges 81 cooperate to fix the positional relationship between the sealing ring 8 and the second housing 62.

[0035] More preferably, the partition cavity 623 is filled with sealant, which further enhances the waterproof performance of the outer shell 6. The sealant also fixes the position of the cable 7, especially the outer sheath of the cable 7. This reduces displacement between the outer sheath of the cable 7 and the core of the cable 7, preventing the core of the cable 7 from being exposed and causing safety hazards.

[0036] Figure 6A partial vertical sectional view of the waterproof structure of the telescopic device of this utility model is shown. Please refer to it. Figure 1 , Figure 2 and Figure 6 The telescopic rod 1 includes a sleeve 11 and a screw 12. A driven nut 4 is mounted on the screw 12. A third sealing ring 43 is provided between the driven nut 4 and the screw 12. The third sealing ring 43 seals the gap between the driven nut 4 and the screw 12, reducing moisture infiltration. The driven nut 4 is connected to the drive motor 2 via a gear transmission assembly 3. Specifically, the output end of the drive motor 2 is provided with a driving gear, and the sleeve 11 is provided with a driven gear, which is connected to the driven nut 4. When the drive motor 2 rotates, it drives the driving gear to rotate, which in turn drives the driven gear meshing with the driving gear to rotate, which in turn drives the driven nut 4 to rotate. Finally, the driven nut 4 drives the screw 12 to rotate, realizing the extension and retraction of the telescopic rod 1.

[0037] Preferably, a first annular groove 41 is formed on the outer side of the driven nut 4, and a first sealing ring 42 is provided in the first annular groove 41. The first sealing ring 42 fills the gap between the sleeve 11 and the outer shell 6, ensuring the sealing performance between the sleeve 11 and the outer shell 6.

[0038] More preferably, a second annular groove 111 is formed on the sleeve 11. A second sealing ring 112 is provided in the second annular groove 111. The second sealing ring 112 fills the gap between the sleeve 11 and the outer shell 6, ensuring the sealing performance between the sleeve 11 and the outer shell 6.

[0039] The specific workflow of this utility model is as follows:

[0040] When moisture flows from sleeve 11 to outer casing 6, the second sealing ring 112 between sleeve 11 and the outer casing 6 prevents moisture from flowing into the interior of outer casing 6. Moisture adhering to the outside of driven nut 4 is blocked by the first sealing ring 42, preventing moisture from flowing into the interior of outer casing 6 through the gap between outer casing 6 and driven nut 4. When screw 12 rotates and extends into sleeve 11, moisture adhering to screw 12 is blocked by the third sealing ring 43. Moisture adhering to the surface of outer casing 6 is blocked by the stop structure, preventing moisture from flowing into the interior of outer casing 6 through the seams on outer casing 6. At the same time, moisture flowing along the seam between the first casing 61 and the third casing 63 is guided to flow downward along the stop and leave outer casing 6. The stop between the second casing 62 and the third casing 63 is connected to the vertically arranged stop, meaning that moisture flowing along the seam between the second casing 62 and the third casing 63 is also affected and flows downward along the stop and leaves outer casing 6.

[0041] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0042] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. 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 patent should be determined by the appended claims.

Claims

1. A waterproof structure of a telescopic device, characterized by, The telescopic device waterproof structure comprises a driving motor, a telescopic rod, a fixing base and a shell; The driving motor is arranged on the fixing base; The telescopic rod passes through and connects the fixing base; The shell is sleeved on the driving motor and the fixing base; the shell comprises a first shell, a second shell and a third shell; the first shell covers the fixing base on the side of the telescopic rod away from the driving motor; the second shell covers the fixing base on the same side as the driving motor; and the third shell covers the driving motor; The first shell, the second shell and the third shell are connected through a stop structure.

2. The waterproof structure of the telescopic device according to claim 1, characterized in that: The telescopic rod comprises a sleeve and a screw rod; a driven nut is arranged on the screw rod; a third sealing ring is arranged between the driven nut and the screw rod; and the driven nut is connected to the driving motor through a gear transmission assembly.

3. The waterproof structure of the telescopic device according to claim 2, characterized in that: A first annular groove is formed on the outer side of the driven nut, and a first sealing ring is arranged in the first annular groove; the first sealing ring fills the gap between the sleeve and the shell.

4. The waterproof structure of the telescopic device according to claim 3, characterized in that: A second annular groove is formed on the sleeve, and a second sealing ring is arranged in the second annular groove; the second sealing ring fills the gap between the sleeve and the shell.

5. The telescopic device waterproofing structure of claim 1, wherein: A baffle is arranged in the second shell; a partition cavity is formed between the baffle and the second shell; A cable connected to the driving motor passes through the partition cavity.

6. The telescopic device waterproofing structure of claim 5, wherein: A sealing ring is arranged between the cable and the second shell; the sealing ring is sleeved on the cable; at least two annular flanges are arranged on the outer side of the sealing ring; one annular flange is arranged on the inner side of the second shell, and the other annular flange is arranged on the outer side of the second shell.

7. The telescopic device waterproofing structure of claim 6, wherein: The partition cavity is filled with sealing glue.

8. The telescopic device waterproofing structure of claim 1, wherein: A first convex stop is arranged on the outer edge of the first shell; recessed stops are respectively formed on the second shell and the third shell to clasp the first convex stop.

9. The telescopic device waterproofing structure of claim 1, wherein: A second convex stop is arranged on the outer edge of the second shell close to the third shell; a recessed stop is formed on the third shell to clasp the second convex stop.

10. The telescopic device waterproofing structure of claim 1, wherein: The first shell, the second shell and the third shell are screw-connected to the fixing base.

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