Waterproof sealing structure of winding roll

Abstract

The waterproof sealing structure comprises a support, the support is provided with a rotating shaft portion, the end portion of the rotating shaft portion is fixedly connected with a socket assembly, the rotating shaft portion is rotatably connected with a wire spool assembly, the socket assembly is provided with a first annular protruding portion, and the first annular protruding portion is provided with a second annular protruding portion. A second annular convex part is arranged on the side, corresponding to the socket assembly, of the wire spool assembly, a first annular sealing piece is arranged between the first annular convex part and the second annular convex part and comprises a first side part and a second side part, the outer wall of the first side part is attached to the inner wall of the first annular convex part in a sealed mode, and the outer wall of the second side part is attached to the inner wall of the second annular convex part in a sealed mode. The second side part is in contact fit with the second annular convex part, and a buffer gap is formed between the first side part and the second side part. The utility model has the following advantages and effects: the scheme utilizes a new mechanical structure, and has the effects of good waterproof sealing performance, few required sealing rings and convenience in installation.

Description

Technical Field

[0001] This utility model relates to the field of cable reel technology, and in particular to a waterproof sealing structure for a cable reel. Background Technology

[0002] A power cord reel is a commonly used outdoor device that extends the power cord, allowing appliances to function normally even when they are far from the power source. The reel can also be rotated to store the power cord.

[0003] Traditional waterproof sealing structures for cable reels typically employ a circular annular sealing ring. The two sides of the annular sealing ring contact the socket assembly and the cable reel assembly respectively to achieve a waterproof seal. However, traditional waterproof sealing structures for cable reels have the following drawbacks: the contact area between the sealing ring and the socket assembly and the cable reel assembly is small, resulting in insufficient waterproof and dustproof sealing. Multiple sealing rings are often required to achieve a waterproof seal between the socket assembly and the cable reel assembly, which is inconvenient for installation. Utility Model Content

[0004] The purpose of this invention is to provide a waterproof sealing structure for a cable reel, which improves the waterproof sealing performance of the cable reel and facilitates the installation of the sealing components.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a waterproof sealing structure for a winding reel, including a bracket, the bracket having a rotating shaft portion, a socket assembly fixedly connected to the end of the rotating shaft portion, a winding reel assembly rotatably connected to the rotating shaft portion, the socket assembly having a first annular protrusion, the winding reel assembly having a second annular protrusion corresponding to the first annular protrusion, a first annular sealing member being provided between the first annular protrusion and the second annular protrusion, the first annular sealing member including a first side portion and a second side portion, the outer wall of the first side portion sealingly fitting with the inner wall of the first annular protrusion, the second side portion contacting and engaging with the second annular protrusion, and a buffer gap being formed between the first side portion and the second side portion.

[0006] By adopting the above technical solution, when the user uses the cable reel, a first annular seal is installed between the first annular protrusion of the socket assembly and the second annular protrusion of the cable reel assembly. This first annular seal can prevent water from entering the equipment and affecting its normal operation, thus improving the safety of the cable reel in rainy weather. In addition, during the use of the cable reel, the first and second annular protrusions may wobble due to concentricity issues when the cable reel assembly rotates, causing changes in the radial distance. The buffer gap provides radial displacement space for the first and second sides, ensuring that the outer wall of the first side is always in close contact with the inner wall of the first annular protrusion, and that the outer wall of the second side is always in close contact with the interior of the second annular protrusion. Compared with traditional annular seals with a circular cross-section, the first annular seal has a larger contact area with the cable reel assembly and the socket assembly, further improving waterproof sealing performance, reducing the number of seals required for cable reel installation, and facilitating installation.

[0007] A further feature of this invention is that the first annular seal includes a connecting portion that connects the first side and the second side, and the cross-section of the first annular seal is U-shaped.

[0008] By adopting the above technical solution, when installing the first annular seal, the first side and the second side are squeezed inward, and an external force is applied to the connecting part to press the first annular seal between the first annular protrusion and the second annular protrusion, which facilitates the installation of the first annular seal.

[0009] A further feature of this invention is that the first annular seal further includes a skeleton, the first annular seal has a cavity, the skeleton is installed in the cavity, and the skeleton is tightly fitted to the inner wall of the cavity.

[0010] By adopting the above technical solution, a cavity is opened in the first annular seal, and a skeleton is installed in the cavity, so that the first annular seal has support. At the same time, the first annular seal can maintain its shape and tension, and avoid the first annular seal from falling off due to aging during long-term use.

[0011] A further feature of this invention is that the cavity includes a first cavity, a second cavity, and a curved portion connecting the first cavity and the second cavity. The first cavity is located within a first side portion, the second cavity is located within a connecting portion, and the skeleton is adapted to be disposed within the cavity.

[0012] By adopting the above technical solution, the first cavity and the second cavity are connected through the bending part, so that the cavity cross section is L-shaped, connecting the first side and the connecting part of the first annular seal. At the same time, the skeleton with the same shape and size as the cavity is fitted into the cavity, further improving the deformation resistance of the first annular seal.

[0013] A further feature of this invention is that the second side portion has a first lip and a second lip, the first lip and the second lip are located on the side of the second side portion away from the first side portion, and the first lip and the second lip are respectively in contact with the outer wall of the second annular protrusion.

[0014] By adopting the above technical solution, the first lip and the second lip respectively contact the outer wall of the second annular protrusion, which can prevent external pollutants and dust from entering. In addition, since the contact area between the first lip, the second lip and the second annular protrusion is smaller than the contact area between the first side and the first annular protrusion, the friction between the second side and the second annular protrusion is reduced, and the rotational smoothness between the first annular seal and the second annular protrusion is improved.

[0015] A further feature of this invention is that the second side portion also includes a lip opening, which is located between the first lip portion and the second lip portion.

[0016] By adopting the above technical solution, when installing the first annular seal, an appropriate amount of lubricant is applied to the lip to reduce the friction between the first annular seal and the second annular protrusion, thereby extending the service life of the equipment. At the same time, the lip is sealed to improve the sealing performance of the first annular seal.

[0017] A further feature of this invention is that an annular elastic ring is provided within the buffer gap, and the annular elastic ring has a tendency to lock the second side portion onto the outer wall of the second annular protrusion.

[0018] By adopting the above technical solution, the annular elastic ring contracts inward, generating a radial contraction force on the second side, thereby locking the second side and improving the sealing and waterproof performance of the first annular seal.

[0019] A further feature of this invention is that an annular groove is provided on the upper edge of the second side in the circumferential direction, the annular groove is provided on the side of the second side near the buffer gap, and the annular elastic ring is installed in the annular groove.

[0020] By adopting the above technical solution, an annular groove is opened on the second side for the installation of the annular elastic ring, making it difficult for the annular elastic ring to fall off and ensuring that the annular elastic ring can lock the second side.

[0021] A further feature of this invention is that a second annular seal is provided between the winding reel assembly and the rotating shaft, with one side of the second annular seal closely attached to the winding reel assembly and the other side of the second annular seal in contact with the rotating shaft.

[0022] By adopting the above technical solution, the waterproof sealing performance between the winding reel assembly and the shaft is improved, further increasing the safety of the winding reel in rainy weather.

[0023] A further feature of this invention is that the winding reel assembly has a stepped hole along the axial direction of the rotating shaft portion, the stepped hole is located at one end of the winding reel assembly away from the socket assembly, the second annular seal is sleeved on the rotating shaft portion and built into the stepped hole, and the winding reel assembly is fixedly provided with a sealing cap at the opening end of the stepped hole.

[0024] By adopting the above technical solution, the second annular seal is installed in the stepped hole and covered with a sealing cap, which has a preliminary dustproof effect, while preventing the second annular seal from being exposed to the air too much, slowing down aging, and increasing the service life of the second annular seal.

[0025] In summary, this utility model has the following beneficial effects:

[0026] 1. A first annular seal is provided between the first annular protrusion and the second annular protrusion to achieve waterproofing between the socket assembly and the winding reel assembly, thereby improving the waterproof performance of the winding reel.

[0027] 2. The first annular seal has an internal skeleton, which has the effect of maintaining the shape of the first annular seal.

[0028] 3. The use of an annular elastic ring to lock the second side to the second annular protrusion improves the waterproof performance of the first annular seal. Attached Figure Description

[0029] Figure 1 This is a cross-sectional view of the waterproof sealing structure of the cable reel provided by this utility model.

[0030] Figure 2 This is an exploded view of the waterproof sealing structure component of this utility model.

[0031] Figure 3 yes Figure 1 Enlarged view of point A in the middle.

[0032] Figure 4 This is a cross-sectional schematic diagram of the first annular seal of this utility model.

[0033] Figure 5 yes Figure 1 Enlarged view of point B in the middle.

[0034] In the figure: 1. Bracket; 11. Rotating shaft; 2. Socket assembly; 21. First annular protrusion; 3. Winding reel assembly; 31. Second annular protrusion; 32. Stepped hole; 33. Sealing cover; 4. First annular seal; 41. First side; 42. Second side; 421. First lip; 422. Second lip; 423. Lip opening; 424. Annular groove; 43. Buffer gap; 44. Connecting part; 45. Skeleton; 46. Cavity; 461. First cavity; 462. Second cavity; 463. Bending part; 47. Annular elastic ring; 5. Second annular seal. Detailed Implementation

[0035] The present invention will be further described below with reference to the accompanying drawings.

[0036] A waterproof sealing structure for a cable reel, such as Figure 1-3 As shown, the device includes a bracket 1, which has a rotating shaft 11. The end of the rotating shaft 11 is fixedly connected to a socket assembly 2. A winding reel assembly 3 rotates around the rotating shaft 11. The socket assembly 2 has a first annular protrusion 21, and the winding reel assembly 3 has a second annular protrusion 31 corresponding to the first annular protrusion 21. A first annular seal 4 is provided between the first annular protrusion 21 and the second annular protrusion 31. The first annular seal 4 has a first side portion 41 and a second side portion 42 on both sides. The outer wall of the first side portion 41 is sealed and fitted with the inner wall of the first annular protrusion 21, and the second side portion 42 contacts and engages with the second annular protrusion 31. A buffer gap 43 is formed between the first side 41 and the second side 42 to reduce the impact of shaking on the socket assembly 2 and the winding reel assembly 3. At the same time, when the first annular seal 4 is installed, the first side 41 and the second side 42 can undergo elastic deformation, so that the outer wall of the first side 41 is always in close contact with the inner wall of the first annular protrusion 21, and the outer wall of the second side 42 is always in close contact with the inner wall of the second annular protrusion 31. Compared with the traditional seal with a circular cross section, the contact area between the first annular seal 4 and the winding reel assembly 3 and the socket assembly 2 is large, which further improves the waterproof sealing performance, reduces the number of seals required for winding reel installation, and facilitates installation.

[0037] like Figure 3 , 4 As shown, the first side 41 and the second side 42 of the first annular seal 4 are connected by the connecting part 44, and the cross-section of the first annular seal 4 is U-shaped. When installing the first annular seal 4, the first side 41 and the second side 42 on both sides of the first annular seal 4 are pressed inward, and an external force is applied to the connecting part 44 at the same time, so that the first annular seal 4 can be more easily installed between the first annular protrusion 21 and the second annular protrusion 31, thereby improving the ease of installation of the waterproof sealing structure of the reel.

[0038] like Figure 3 , 4As shown, the first annular seal 4 is provided with a skeleton 45 and a cavity 46. The skeleton 45 is installed in the cavity 46 and is tightly fitted to the inner wall of the cavity 46, so that the first annular seal 4 has support. At the same time, the first annular seal 4 can maintain its shape and tension, and can avoid the first annular seal 4 from falling off due to aging during long-term use. In this embodiment, the skeleton 45 is made of metal material to improve the support of the skeleton 45 and have the ability to maintain the shape of the first annular seal 4.

[0039] Furthermore, the cavity 46 for mounting the frame 45 consists of a first cavity 461, a second cavity 462, and a bent portion 463 connecting the first cavity 461 and the second cavity 462. The bent portion 463 connects the first cavity 461 located on the first side 41 and the second cavity 462 located on the second side 42, making the cross-section of the cavity 46 L-shaped. At the same time, the frame 45, which has the same shape and size as the cavity 46, is placed inside the cavity 46, so that the frame 45 connects the first side 41 and the connecting portion 44, further improving the support performance of the frame 45.

[0040] Further explanation of the first annular seal 4, as follows: Figure 2 , 3 As shown, the second side portion 42 includes a first lip 421 and a second lip 422. The first lip 421 and the second lip 422 are located at the end of the second side portion 42 away from the first side portion 41. In this embodiment, the first lip 421 contacts the outer wall of the second annular protrusion 31 to prevent external pollutants and dust from entering. The second lip 422 is in stable contact with the outer wall of the second annular protrusion 31 to prevent water from entering the winding reel. At the same time, the first lip 421 and the second lip 422 have elastic deformation capabilities and can still maintain a stable sealing effect under the influence of the winding reel structure vibration, further improving the waterproof sealing performance of the first annular seal 4.

[0041] Preferably, a lip 423 is formed between the first lip 421 and the second lip 422. When the reel is installed, an appropriate amount of grease is applied to the lip 423, which has a sealing and lubricating effect, facilitates the installation of the first annular seal 4, and reduces the friction between the first annular seal 4 and the second annular protrusion 31, improves the smoothness of equipment rotation, and thus extends the service life of the equipment.

[0042] Furthermore, an annular elastic ring 47 is provided in the buffer gap 43 of the first annular seal 4. The annular elastic ring 47 contracts inward and generates a radial contraction force on the second side 42, thereby locking the second side 42, increasing the contact area between the first lip 421, the second lip 422 and the second annular protrusion 31, and improving the sealing and waterproof performance of the first annular seal 4.

[0043] In addition, an annular groove 424 is provided circumferentially on the side of the second side 42 near the buffer gap 43, and an annular elastic ring 47 is installed in the annular groove 424, so that the annular elastic ring 47 is not easy to fall off during use.

[0044] like Figure 5 As shown, a second annular seal 5 is provided between the winding reel assembly 3 and the rotating shaft 11. In this embodiment, the second annular seal 5 has the same structure as the first annular seal 4. The outer wall of the first side portion 41 of the second annular seal 5 is in close contact with the winding reel assembly 3, and the second side portion 42 of the second annular seal 5 is in contact with the rotating shaft 11. The second annular seal 5 has a skeleton 45 and a cavity 46 for mounting the skeleton 45. The second side portion 42 of the second annular seal 5 has a first lip 421 and a second lip 422. The first lip 421 and the second lip 422 of the second annular seal 5 are in contact with the rotating shaft 11, which improves the waterproof sealing performance between the rotating shaft 11 and the winding reel assembly 3 and prevents water and dust from entering the interior of the winding reel. By providing the first annular seal 4 and the second annular seal 5 on the front and rear sides of the winding reel respectively, waterproofing and dustproofing of the front and rear sides of the winding reel are achieved simultaneously.

[0045] Preferably, in this embodiment, the winding reel assembly 3 has a stepped hole 32 along the axial direction of the rotating shaft portion 11, the second annular seal 5 is sleeved on the rotating shaft portion, and the second annular seal 5 is built into the stepped hole 32, and the winding reel assembly 3 has a sealing cover 33 fixedly connected to the open end of the stepped hole 32, which has a preliminary dustproof effect, while preventing the second annular seal 5 from being exposed to the air too much, slowing down aging, and increasing the service life of the second annular seal 5.

[0046] The basic working principle of this utility model is as follows: A first annular seal 4 is provided between the first annular protrusion 21 of the socket assembly 2 and the second annular protrusion 31 of the winding reel assembly 3. A first side portion 41 and a second side portion 42 are provided on both sides of the first annular seal 4. The first side portion 41 is in close contact with the first annular protrusion 21, and the second side portion 42 is in close contact with the second annular protrusion 31, preventing water from flowing from the outside into the winding reel along the first annular protrusion 21 and the second annular protrusion 31. In addition, a buffer gap 43 is provided between the first side portion 41 and the second side portion 42. When the winding reel is winding, moving, or in use, it is easy to shake, thereby changing the radial distance between the first annular protrusion 21 and the second annular protrusion 31. The buffer gap 43 provides space for small displacement of the first side portion 41 and the second side portion 42, further improving the waterproof sealing performance when the equipment shakes, reducing the number of sealing rings required for the waterproof sealing structure of the winding reel, and facilitating installation.

[0047] The above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A waterproof sealing structure for a cable reel, comprising a bracket (1), characterized in that, The bracket (1) has a pivot (11), and a socket assembly (2) is fixedly connected to the end of the pivot (11). A winding disc assembly (3) is rotatably connected to the pivot (11). The socket assembly (2) has a first annular protrusion (21). The winding disc assembly (3) has a second annular protrusion (31) corresponding to the first annular protrusion (21). A first annular seal (4) is provided between the first annular protrusion (21) and the second annular protrusion (31). The first annular seal (4) includes a first side (41) and a second side (42). The outer wall of the first side (41) is sealed and fitted with the inner wall of the first annular protrusion (21). The second side (42) is in contact with the second annular protrusion (31), and a buffer gap (43) is formed between the first side (41) and the second side (42).

2. The waterproof sealing structure of a cable reel according to claim 1, characterized in that: The first annular seal (4) further includes a connecting portion (44) connecting the first side portion (41) and the second side portion (42), and the cross-sectional surface of the first annular seal (4) is U-shaped.

3. The waterproof sealing structure of a cable reel according to claim 2, characterized in that: The first annular seal (4) further includes a skeleton (45), the first annular seal (4) has a cavity (46), the skeleton (45) is installed in the cavity (46), and the skeleton (45) is tightly fitted to the inner wall of the cavity (46).

4. The waterproof sealing structure of a cable reel according to claim 3, characterized in that: The cavity (46) includes a first cavity (461), a second cavity (462), and a curved portion (463) connecting the first cavity (461) and the second cavity (462). The first cavity (461) is opened in the first side portion (41), the second cavity (462) is opened in the connecting portion (44), and the skeleton (45) is adapted to be disposed in the cavity (46).

5. The waterproof sealing structure of a cable reel according to claim 1, characterized in that: The second side portion (42) has a first lip portion (421) and a second lip portion (422). The first lip portion (421) and the second lip portion (422) are located on the side of the second side portion (42) away from the first side portion (41), and the first lip portion (421) and the second lip portion (422) respectively contact the outer wall of the second annular protrusion (31).

6. The waterproof sealing structure of a cable reel according to claim 5, characterized in that: The second side portion (42) also includes a lip opening (423), which is located between the first lip portion (421) and the second lip portion (422).

7. The waterproof sealing structure of a cable reel according to claim 1, characterized in that: The buffer gap (43) is provided with an annular elastic ring (47), and the annular elastic ring (47) has a tendency to lock the second side (42) onto the outer wall of the second annular protrusion (31).

8. The waterproof sealing structure of a cable reel according to claim 7, characterized in that: The second side (42) has an annular groove (424) along its circumferential direction. The annular groove (424) is located on the side of the second side (42) near the buffer gap (43). The annular elastic ring (47) is installed in the annular groove (424).

9. The waterproof sealing structure of a cable reel according to claim 1, characterized in that: A second annular seal (5) is provided between the winding reel assembly (3) and the rotating shaft (11). One side of the second annular seal (5) is in close contact with the winding reel assembly (3), and the other side of the second annular seal (5) is in contact with the rotating shaft (11).

10. The waterproof sealing structure of a cable reel according to claim 9, characterized in that: The winding reel assembly (3) has a stepped hole (32) along the axial direction of the rotating shaft (11). The stepped hole (32) is located at one end of the winding reel assembly (3) away from the socket assembly (2). The second annular seal (5) is sleeved on the rotating shaft (11) and built into the stepped hole (32). The winding reel assembly (3) has a sealing cap (33) fixed at the opening end of the stepped hole (32).

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