Cable sealing lock head

Abstract

This utility model provides a cable sealing lock head, including a main body, a sealing body connected to one end of the main body, and a nut for fixing the sealing body to the main body. The main body includes a hollow main rod arranged axially and a mounting part surrounding the main rod, with threads on the mounting part. The sealing body includes a sealing flange that abuts against the mounting part axially and a limiting body extending from the sealing flange toward the end away from the mounting part. The limiting body is formed into a tapered channel that gradually decreases in size toward the end away from the mounting part. The nut has internal threads and a sealing surface located on the internal threads away from the mounting part. The internal threads are threadedly connected to the mounting part. The cable sealing lock head of this utility model uses the limiting body of the main body and the sealing body to limit the cable. The main rod is not easily broken by the lateral thrust of the cable, and the limiting body is not easily caused to fail to seal under the lateral thrust of the cable. It can be used to accommodate cables of different diameters by cutting the limiting body, thus providing greater flexibility.

Description

Technical Field

[0001] This utility model relates to a cable sealing lock head. Background Technology

[0002] Cable lock heads are a common interface element in electrical equipment. They enable cable connections between different devices while maintaining the original protection level of the enclosure.

[0003] Currently, common cable lock heads typically employ the following sealing principle: by tightening the nut, the gap between the claw teeth is forced to contract, compressing the rubber sealing ring and causing it to grip the cable, thereby achieving a seal.

[0004] However, the existing structure has the following shortcomings: (1) When the cable lock head is subjected to the lateral tension of the cable, the claw teeth are simultaneously subjected to radial clamping force and reverse bending stress, which can easily cause breakage and lead to seal failure. (2) Although various specifications of sealing rings can be equipped to adapt to cables of different diameters, the operation of replacing the sealing rings during on-site installation is cumbersome, and there is a problem that the sealing rings are easily lost.

[0005] In view of this, it is necessary to improve the existing cable sealing lock to solve the above problems. Utility Model Content

[0006] The purpose of this utility model is to provide a cable sealing lock head to solve the problems of existing cable lock heads easily damaging cables and the need to configure multiple specifications to adapt to cables of different diameters.

[0007] To achieve the above objectives, this utility model provides a cable sealing lock head, which includes a main body, a sealing body connected to one end of the main body, and a nut for fixing the sealing body to the main body. The main body includes a hollow main rod arranged axially and a mounting portion surrounding the main rod. The mounting portion is provided with threads. The sealing body includes a sealing flange abutting against the mounting portion axially and a limiting body extending from the sealing flange toward the end away from the mounting portion. The limiting body is formed as a tapered channel that gradually decreases in size toward the end away from the mounting portion. The nut has an internal thread and a sealing surface located on the internal thread away from the mounting portion. The internal thread is threadedly connected to the mounting portion, and the sealing surface abuts against the sealing flange to fix the sealing flange to the mounting portion.

[0008] As a further improvement of this utility model, a first through hole is provided in the middle of the sealing surface for the limiting body to pass through.

[0009] As a further improvement of this utility model, the sealing flange is provided with a second through hole in the middle, and one end of the main rod protrudes axially from one end of the mounting part and passes through the second through hole to be inserted into the limiting body.

[0010] As a further improvement of this utility model, the limiting body is provided with a plurality of parallel protrusions spaced along the axis on its outer side, and the diameter of the tapered channel at each position of the protrusions corresponds to a cable diameter of a certain specification.

[0011] As a further improvement of this utility model, the limiting body is made of a flexible material.

[0012] As a further improvement of this utility model, the mounting part is recessed inward along the axial direction on the side facing the sealing body to form a mounting groove, and the sealing flange is provided with a sealing rib protruding on the side facing the mounting part, and the sealing rib is inserted into the mounting groove along the axial direction.

[0013] As a further improvement of this utility model, the sealing rib is provided with a limiting protrusion extending radially outward, the limiting protrusion being used to hold the sealing rib radially against the mounting part after the sealing rib is inserted into the mounting groove.

[0014] As a further improvement of this utility model, the main rod extends axially from the end of the mounting part away from the sealing body, and the portion extending out of the mounting part is threaded. The cable sealing lock also includes a nut that is threadedly connected to the end of the main rod away from the sealing body.

[0015] As a further improvement of this utility model, the cable sealing lock head also includes a sealing ring disposed between the nut and the mounting part.

[0016] As a further improvement of this utility model, the nut is provided with anti-slip ribs on its exterior.

[0017] The beneficial effects of this utility model are: the cable sealing lock head of this utility model uses the limiting body of the main body and the sealing body to limit the cable. The main rod is not easy to break due to the lateral thrust of the cable, and the limiting body is not easy to cause sealing failure under the lateral thrust of the cable. It can be used with cables of different diameters by cutting the limiting body, which is more flexible. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a three-dimensional structural diagram of the cable sealing lock head of this utility model; Figure 2 This is a cross-sectional structural schematic diagram of the cable sealing lock head of this utility model; Figure 3 This is an exploded structural diagram of the cable sealing lock head of this utility model; Figure 4 This is a schematic diagram of the dissected structure of the cable sealing lock head of this utility model; Figure 5 yes Figure 4 A magnified structural diagram of region A in the middle. Detailed Implementation

[0019] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0022] like Figures 1 to 5 As shown, the cable sealing lock head 100 of this utility model includes a main body 1, a sealing body 2 connected to one end of the main body 1, and a nut 3 for fixing the sealing body 2 to the main body 1.

[0023] The main body 1 is used for fixed connection with external electrical equipment 200. The main body 1 includes a main rod 11 hollowed out along the axial direction and a mounting part 12 surrounding the main rod 11.

[0024] The cable can pass through the middle of the main rod 11, and the mounting part 12 is threaded for threaded connection with the nut 3.

[0025] The sealing body 2 includes a sealing flange 21 that abuts against the mounting portion 12 along the axial direction, and a limiting body 22 extending from the sealing flange 21 toward one end away from the mounting portion 12. The limiting body 22 is formed as a tapered channel 23 that gradually decreases in size toward the mounting portion 12. A cable can pass through the limiting body 22 of the sealing body 2 axially, and the cable passes through the tapered channel 23. The limiting body 22 can limit the radial movement of the cable.

[0026] The nut 3 is used to fix the sealing body 2 onto the main body 1. In this embodiment, the nut 3 has an internal thread and a sealing surface 31 located away from the mounting part 12. The internal thread is threadedly connected to the mounting part 12, and the sealing surface 31 abuts against the sealing flange 21 to fix the sealing flange 21 onto the mounting part 12.

[0027] In this embodiment, the conical channel 23 of the sealing body 2 is used to limit the cable, the main rod 11 is not easily broken by the lateral thrust of the cable, and the limiting body 22 is not easily caused to fail due to the lateral thrust of the cable.

[0028] To achieve the installation and fixation of the cable sealing lock head 100, in this embodiment, the main rod 11 extends axially from the end of the mounting portion 12 away from the sealing body 2, and the portion extending out of the mounting portion 12 is threaded. The cable sealing lock head 100 also includes a nut 4 threadedly connected to the end of the main rod 11 away from the sealing body 2. The main rod 11 passes through the mounting hole on the external electrical equipment 200, and then the cable sealing lock head 100 is fixed by threaded connection with the nut 4.

[0029] In other embodiments, other fixed connection methods may also be used, such as welding the main body 1 to the external electrical equipment 200.

[0030] In this embodiment, the cable sealing lock head 100 further includes a sealing ring 5 disposed between the nut 4 and the mounting part 12. The sealing ring 5 is sleeved on the main rod 11 and serves to seal the connection after the nut 4 and the main rod 11 are threaded together.

[0031] The sealing flange 21 has a second through hole in the middle. One end of the main rod 11 protrudes axially from one end of the mounting part 12 and passes through the second through hole to be inserted into the limiting body 22.

[0032] In this embodiment, the limiting body 22 has multiple parallel protrusions spaced along its axis on its outer surface, and the diameter of the tapered channel 23 at each protrusion 24 corresponds to a cable diameter of a certain specification. Furthermore, the limiting body 22 can be marked with an adapter wire diameter specification 25, allowing comparison with the actual wire diameter of the cable on site for easy identification and operation.

[0033] The protrusions 24 correspond to different outer diameters of the cable. The protrusions 24 are used to mark the cutting position, so that the installer can cut along the protrusions 24 to match the outer diameter of the cable of different sizes.

[0034] In this embodiment, the limiting body 22 is made of a flexible material, preferably rubber. The end of the limiting body 22 can bend along the cable routing path without creating gaps, resulting in a better sealing effect. The sealing flange 21 can also be made of rubber, thus forming it integrally with the limiting body 22.

[0035] To achieve better installation results, in this embodiment, the mounting portion 12 is recessed axially inward on the side facing the sealing body 2 to form a mounting groove 121, and the sealing flange 21 is provided with a sealing rib 211 protruding on the side facing the mounting portion 12. The sealing rib 211 is inserted axially into the mounting groove 121. The sealing rib 211 and the mounting groove 121 are interlocked to limit the position of the sealing body 2. Through the cooperation of the sealing rib 211 and the mounting groove 121, the sealing body 2 can be prevented from rotating relative to the mounting portion 12, and the sealing body 2 will not get tangled on the cable due to rotation when assembling the nut 3.

[0036] The sealing rib 211 is provided with a limiting protrusion 212 extending radially outward. The limiting protrusion 212 is used to engage with the mounting part 12 radially after the sealing rib 211 is inserted into the mounting groove 121. The limiting protrusion 212 is provided so that the sealing rib 211 and the mounting groove 121 of the main body 1 achieve an interference fit during installation, making it less likely to fall off during assembly.

[0037] The nut 3 has anti-slip ribs 32 on its exterior. In this embodiment, the sealing surface 31 has a first through hole in the middle for the limiting body 22 to pass through. The sealing surface 31 abuts against the sealing flange 21 along the axial direction to achieve a seal, and the anti-slip ribs 32 facilitate the application of force by the installer.

[0038] The cable sealing lock head 100 of this utility model enables cable installation in the following manner: Take the cable to be installed and test its outer diameter; compare it with the wire diameter specification 25 in the limiting body 22, and use scissors to cut the limiting body 22 along the protruding teeth 24; put the nut 3 and the sealing body 2 on the cable installation end in sequence; after the sealing body 2 is placed in the appropriate position of the cable, insert its sealing rib 211 into the installation groove 121 of the installation part 12, press it one turn to ensure that it is installed in place; assemble the nut 3 and tighten it along the thread of the main body 1; then install the main body 1 onto the external electrical equipment 200.

[0039] The cable sealing lock head 100 of this utility model uses the limiting body 22 of the main body 1 and the sealing body 2 to limit the cable. The main rod 11 is not easy to break due to the lateral thrust of the cable, and the limiting body 22 is not easy to cause sealing failure under the lateral thrust of the cable. It can be used to fit cables of different diameters by cutting the limiting body 22, which is more flexible.

[0040] 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.

[0041] 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 cable sealing lock head, characterized in that: The cable sealing lock head includes a body, a sealing body connected to one end of the body, and a nut for fixing the sealing body to the body. The body includes a main rod hollow along the axial direction and a mounting part surrounding the main rod. The mounting part is provided with threads. The sealing body includes a sealing flange abutting against the mounting part along the axial direction and a limiting body extending from the sealing flange toward the end away from the mounting part. The limiting body is formed as a tapered channel that gradually decreases in size toward the end away from the mounting part. The nut has an internal thread and a sealing surface located on the internal thread away from the mounting part. The internal thread is threaded to the mounting part, and the sealing surface abuts against the sealing flange to fix the sealing flange to the mounting part.

2. The cable sealing lock head according to claim 1, characterized in that: The sealing surface has a first through hole in the middle for the limiting body to pass through.

3. The cable sealing lock head according to claim 1, characterized in that: The sealing flange has a second through hole in the middle, and one end of the main rod protrudes axially from one end of the mounting part and passes through the second through hole to be inserted into the limiting body.

4. The cable sealing lock head according to claim 1, characterized in that: The limiting body has multiple parallel protrusions spaced along its axis on its outer side, and the diameter of the tapered channel at each protrusion position corresponds to a cable diameter of a certain specification.

5. The cable sealing lock head according to claim 1, characterized in that: The limiting body is made of flexible material.

6. The cable sealing lock head according to claim 1, characterized in that: The mounting portion is recessed inward along the axial direction on the side facing the sealing body to form a mounting groove, and the sealing flange is provided with a sealing rib protruding on the side facing the mounting portion, and the sealing rib is inserted into the mounting groove along the axial direction.

7. The cable sealing lock head according to claim 6, characterized in that: The sealing rib is provided with a limiting protrusion that extends radially outward. The limiting protrusion is used to hold the sealing rib radially against the mounting part after it is inserted into the mounting groove.

8. The cable sealing lock head according to claim 1, characterized in that: The main rod extends axially from the end of the mounting portion away from the sealing body, and the portion extending out of the mounting portion is threaded. The cable sealing lock also includes a nut that is threadedly connected to the end of the main rod away from the sealing body.

9. The cable sealing lock head according to claim 8, characterized in that: The cable sealing lock also includes a sealing ring disposed between the nut and the mounting portion.

10. The cable sealing lock head according to claim 1, characterized in that: The nut has anti-slip ribs on its outside.

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