Waterproof joint for cable and electrical module

Abstract

The utility model discloses a waterproof joint used for a cable and an electrical module, the waterproof joint comprises an elastic sealing member, a connecting member and an enclasping member, the elastic sealing member is suitable for deformation and forms a first through hole suitable for sleeving the cable; the connecting piece comprises at least two connecting heads, the connecting heads are suitable for being connected and enclosed to form a second through hole, and the connecting piece is provided with an external thread part and a deformation part; the enclasping piece comprises at least two enclasping heads, the enclasping heads are suitable for being connected to form a third through hole, the third through hole comprises an internal thread part matched with the external thread part and a contraction part matched with the deformation part, and the inner diameter of the contraction part is gradually reduced in the direction away from the internal thread part; the enclasping piece is configured to move in the extending direction of the cable when the internal thread part rotates in the threaded connection direction of the internal thread part and the external thread part, so that the contraction part extrudes the deformation parts, and the elastic sealing piece is clamped by the deformation parts. The electrical module adopts the waterproof joint. The waterproof joint is suitable for cables of various specifications.

Description

Technical Field

[0001] The utility model relates to the technical field of electricity, in particular to a waterproof joint for a cable and an electrical module. Background Art

[0002] There are multiple electrical components in an electrical module. For some electrical components, the cables need to extend from the electrical module to be connected to the outside. In order to ensure the protection of the electrical module, a waterproof joint needs to be provided at the position where the cable extends to ensure that the electrical module is waterproof and dustproof. Due to the need to ensure the sealing performance, the existing waterproof joints mostly correspond to the specifications of the cables one by one. Therefore, when the specifications of the cables change, new waterproof joints need to be replaced accordingly, resulting in a high cost. Summary of the Utility Model

[0003] The purpose of the utility model is to overcome the above-mentioned defects or problems existing in the background art, and provide a waterproof joint for a cable and an electrical module, wherein the waterproof joint can be applicable to cables of various specifications.

[0004] To achieve the above purpose, the utility model and its preferred embodiments adopt the following technical solutions, but the embodiments are not limited to the following solutions:

[0005] Technical solution one and its related embodiments provide a waterproof joint for a cable, including an elastic seal, which extends from the first end along the circumferential direction of the cable to the second end. The elastic seal is adapted to deform to form an opening suitable for the cable to enter when the first end and the second end are away from each other, and to join to form a first through hole suitable for sleeving outside the cable when the first end and the second end are in contact with each other; a connecting member, which includes at least two connecting heads arranged along the circumferential direction of the cable, and each connecting head is adapted to connect and enclose to form a second through hole suitable for sleeving outside the elastic seal. The connecting member is also provided with an external thread portion and a deformation portion along the extending direction of the cable when the connecting heads are connected. The deformation portion includes several rib strips arranged along the circumferential direction of the cable, and a deformation gap inclined relative to the radial direction of the cable is formed between at least some of the rib strips; and a clamping member, which includes at least two clamping heads arranged along the circumferential direction of the cable, and each clamping head is adapted to connect and enclose to form a third through hole suitable for sleeving outside the connecting member. The third through hole includes an internal thread portion cooperating with the external thread portion and a contraction portion cooperating with the deformation portion. The inner diameter of the contraction portion gradually decreases along the direction away from the internal thread portion; the clamping member is configured to move relative to the connecting member along the extending direction of the cable when the internal thread portion rotates along the screwing direction with the external thread portion, so that the contraction portion radially squeezes the deformation portion and each deformation portion clamps the elastic seal.

[0006] Based on Technical Solution 1, there is also provided Technical Solution 2. In Technical Solution 2, the first end is provided with a first abutting surface that is radially inclined with respect to the cable, the second end is provided with a second abutting surface adapted to the first abutting surface, and the first abutting surface and the second abutting surface abut against each other when the elastic seal is not stressed.

[0007] Based on Technical Solution 2, there is also provided Technical Solution 3. In Technical Solution 3, the external thread portion is circumferentially provided with external thread segments and smooth segments at intervals. The external thread segments are provided with external threads, and the smooth segments are formed at the joints of the respective connectors and are recessed inward with respect to the external thread segments.

[0008] Based on Technical Solution 3, there is also provided Technical Solution 4. In Technical Solution 4, both ends of each connector in the circumferential direction are respectively provided with smooth portions perpendicular to the radial direction of the cable. When the connectors are connected, two adjacent smooth portions are smoothly transitioned and butt-jointed to form the smooth segment.

[0009] Based on Technical Solution 4, there is also provided Technical Solution 5. In Technical Solution 5, the deformation portion includes a plurality of first ribs circumferentially arranged at intervals and a plurality of second ribs arranged at intervals along the tangential direction of the cable. Each first rib corresponds to the external thread segment in the extending direction of the cable, and each second rib corresponds to the smooth segment in the extending direction of the cable. Both ends of each first rib in the circumferential direction are provided with third abutting surfaces inclined with respect to the radial direction of the cable to form the deformation gap between adjacent first ribs. Both ends of each second rib in the circumferential direction are provided with fourth abutting surfaces extending along the radial direction of the cable.

[0010] Based on Technical Solution 5, there is also provided Technical Solution 6. In Technical Solution 6, each first rib extends from the end of the external thread segment, and each second rib extends from the end of the smooth segment.

[0011] Based on Technical Solution 6, there is also provided Technical Solution 7. In Technical Solution 7, a support surface facing the opening at the end where the deformation portion is located is provided in the second through hole corresponding to the external thread portion, and the elastic seal is provided with an abutting surface adapted to abut against the support surface.

[0012] Based on Technical Solution 1, there is also provided Technical Solution 8. In Technical Solution 8, the cable extends out from the connection end of the electrical module. The outer wall where the connection end of the electrical module is located is defined as the front wall. Each connector includes a body, a first connection portion, and a second connection portion. The bodies are connected to each other and enclose to form the second through hole. Each first connection portion is fixedly connected to the outside of the body and is adapted to abut against the outer surface of the front wall. The second connection portions are connected to each other and enclose to form a fourth through hole adapted to be sleeved outside the body; the front wall is clamped between the first connection portion and the second connection portion.

[0013] Based on Technical Solution VIII, there is also provided Technical Solution IX. In Technical Solution IX, each first connecting portion is snap-fitted and / or screwed to each other, each second connecting portion is snap-fitted and / or screwed to each other, and each clamping head is snap-fitted and / or screwed to each other.

[0014] Technical Solution X and its related embodiments provide an electrical module provided with a cable extending from a connection end, and adopting the waterproof connector for the cable described in any one of Technical Solutions I to IX.

[0015] As can be seen from the above description of the present invention and its preferred embodiments, compared with the prior art, the technical solutions and their preferred embodiments of the present invention have the following beneficial effects due to the adoption of the following technical means:

[0016] In Technical Solution I, during installation, the first end and the second end of the elastic seal are separated from each other so that the cable enters the elastic seal along the radial direction. At this time, although the elastic seal is sleeved outside the cable, it is not yet in close fit with the cable. Then, the connecting heads of the connecting member are connected to each other to form a second through hole sleeved outside the elastic seal. The elastic seal is located in the second through hole and is squeezed by the deformation portion. However, at this time, there is still no close fit between the deformation portion and the elastic seal. Then, the clamping heads of the clamping member are connected and enclosed to form a third through hole. The third through hole forms an internal thread portion that cooperates with the external thread portion and a contraction portion that cooperates with the deformation portion. When the clamping member rotates along the screwing direction with the external thread portion, the clamping member moves relative to the connecting member along the extending direction of the cable. The screwing direction means the direction in which the thread fit between the internal thread portion and the external thread portion increases. Since the inner diameter of the contraction portion gradually decreases along the direction away from the internal thread portion, at least some ribs of the deformation portion form a deformation gap inclined with respect to the radial direction of the cable. Therefore, when the contraction portion rotates along the screwing direction with the external thread portion, the contraction portion radially squeezes the deformation portion. The tangential component of the squeezing force causes the deformation gap to decrease, the deformation portion contracts and clamps the elastic seal, so that the elastic seal is in close fit with the cable. Among them, the contraction portion can be rotated to form different degrees of extrusion with each deformation portion. When the cable is thicker, the contraction portion is made farther away from the external thread portion. When the cable is thinner, the contraction portion can be made closer to the external thread portion. After installation, the elastic seal is in sealing fit with the cable under the action of the connecting member and the clamping member, so that a waterproof structure can be formed outside the cable. When the waterproof connector is installed on the electrical module, the waterproof and dustproof performance can be improved. When disassembling, first disassemble the plurality of clamping heads, then disassemble the plurality of connecting heads, and then separate the first end and the second end of the elastic seal from each other so that the cable radially disengages from the elastic seal.

[0017] It can be seen that by adopting the present technical solution, the elastic seal can be closely fitted with the cable through the cooperation of the clamping member and the connecting member, so that cables of different specifications can be adapted, and the cost is low; and since the elastic seal, the connecting member and the clamping member are all of a spliced structure, when maintenance is required, the connecting part and the clamping member can be disassembled without disconnecting the connection between the cable and the outside, and the disassembly and assembly are convenient; in addition, compared with the structure where the elastic seal does not form an opening on the side, when installing a waterproof joint, it is often necessary to pass the free end of the cable through the elastic seal, and then gradually move the elastic seal along the extension direction of the cable to the connection end of the electrical module. When disassembling, it is the opposite. In order to ensure the sealing performance, the elastic seal is closely fitted with the cable, and the resistance is very large during the movement process, so the whole operation is time-consuming and laborious. The structure of the elastic seal in the present technical solution also makes the operation simpler when sleeving on the cable.

[0018] In Technical Solution 2, a first abutting surface is arranged at the first end, and a second abutting surface is arranged at the second end. When the elastic seal is not stressed, the first abutting surface and the second abutting surface abut against each other. On the one hand, the first end and the second end can be formed by directly cutting the elastic seal after processing, which is beneficial to processing; on the other hand, the cooperation of the first abutting surface and the second abutting surface makes it not easy for the elastic seal to fall off the abutment due to extrusion deformation when being extruded by the connecting member, but instead closely fits due to the tangential component force of the extrusion force, thereby improving the protection effect.

[0019] In Technical Solution 3, the external thread part is circumferentially provided with external thread segments and smooth segments at intervals. The external thread segments are provided with external threads, and the smooth segments are formed at the joints of the connecting heads and are recessed inward relative to the external thread segments. Therefore, when processing the connecting member, a whole circle of external threads can be first processed, and the connecting member can be cut into multiple connecting heads, and then the external threads are cut off along the extension direction of the connecting member at the cutting place, that is, the joint of the connecting heads, to form smooth segments. In this way, after the connecting heads are connected, the external threads of the connecting heads correspond to each other, and the setting of the smooth segments avoids the non-smoothness of the external threads caused by the deformation caused by the cutting of the external threads after the connecting heads are connected. And since the smooth segments are recessed inward relative to the external thread segments, the smooth segments not only do not interfere with the rotation of the clamping member, but also make the clamping member rotate smoothly relative to the connecting member.

[0020] In Technical Solution 4, each connecting head is provided with smooth parts perpendicular to the radial direction of the cable at both ends along the circumference. When the connecting heads are connected, the two adjacent smooth parts are smoothly transitioned and butt-jointed to form a smooth segment. The smooth parts are perpendicular to the radial direction of the cable, so that the smooth segment formed by the butt-joint of the two smooth parts is located in the same plane and perpendicular to the radial direction of the cable. Therefore, the smooth segment is more inwardly contracted and more easily extruded and deformed relative to the external thread segment, thereby making up for the defect that the extrusion force is weaker due to the smooth segment being located at the joint of the two connecting heads, and making the overall extrusion force of the connecting member on the elastic seal more balanced.

[0021] In Technical Solution 5, each first rib corresponds to the external thread section in the extending direction of the cable, and each second rib corresponds to the smooth section in the extending direction of the cable. Third abutting surfaces that are inclined radially with respect to the cable are provided at both ends of the first rib to form a deformation gap between adjacent first ribs. Fourth abutting surfaces that extend along the radial direction of the cable are provided at both ends of the second rib. Therefore, after the deformation part is squeezed by the clamping member, each first rib is affected by the tangential component of the squeezing force of the clamping member and approaches each other, thereby reducing the deformation gap. Each second rib is affected by the squeezing force of the clamping member, causing each smooth part to abut against each other. Therefore, the above arrangement not only ensures the contraction of the deformation part after being squeezed, but also ensures the stable connection of each connector.

[0022] In Technical Solution 6, each first rib extends from the end of the threaded section, and each second rib extends from the end of the smooth section, making the structure of the connecting member more compact compared to the structure with a gap formed between the deformation part and the external thread part. Similarly, it also makes the structure of the clamping member more compact.

[0023] In Technical Solution 7, a supporting surface with an opening towards the end where the deformation part is located is provided in the second through hole corresponding to the external thread part. The elastic sealing member is provided with an abutting surface adapted to abut against the supporting surface. Therefore, both ends of the elastic sealing member along the extending direction of the cable are restricted by the contraction part of the clamping member and the supporting surface, and it is not easy to slide relative to the connecting member and the clamping member along the extending direction of the cable, resulting in a more stable connection.

[0024] In Technical Solution 8, the front wall is clamped between the first connecting part and the second connecting part, so that when the waterproof joint needs to be disassembled, it has to be disassembled from inside the electrical module, achieving the effect of anti-theft.

[0025] In Technical Solution 9, each first connecting part is clamped and / or screwed to each other, each second connecting part is clamped and / or screwed to each other, and each clamping head is clamped and / or screwed to each other, with a simple structure and easy installation.

[0026] In Technical Solution 10, the electrical module adopts the waterproof joint in the above technical solution and has the same technical advantages as the above technical solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0028] Figure 1 It is a schematic diagram of the electrical module according to the embodiment of the present invention;

[0029] Figure 2Schematic diagram of the waterproof joint according to the embodiment of the present utility model;

[0030] Figure 3 Schematic diagram of the waterproof joint according to the embodiment of the present utility model hiding a clamping head;

[0031] Figure 4 Exploded view of the waterproof joint according to the embodiment of the present utility model;

[0032] Figure 5 is Figure 1 front view of

[0033] Figure 6 is Figure 5 cross-sectional view in the A-A direction.

[0034] Description of main reference numerals:

[0035] Electrical module 10; front wall 11; elastic seal 20; first end 21; second end 22; first through hole 23; annular flange 24; abutting surface 241; connecting member 30; connecting head 31; smooth portion 311; body 312; first connecting portion 313; second connecting portion 314; fourth through hole 315; external thread portion 32; external thread section 321; smooth section 322; deformation portion 33; first rib 331; second rib 332; second through hole 34; supporting surface 341; clamping member 40; clamping head 41; third through hole 42; internal thread portion 43; contraction portion 44. Detailed implementation manners

[0036] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are the preferred embodiments of the present utility model and should not be regarded as excluding other embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0037] In the claims, the description and the above-mentioned accompanying drawings of the present utility model, unless otherwise clearly defined, when using terms such as "first", "second" or "third", etc., are all used to distinguish different objects and are not used to describe a specific order.

[0038] In the claims, description and above-mentioned drawings of the present utility model, unless otherwise clearly defined, for orientation terms, such as the use of terms "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inner", "outer", "upper", "lower", "front", "rear", "left", "right", "clockwise", "counterclockwise", etc. to indicate orientation or positional relationship are based on the orientation and positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, so it should not be construed as limiting the specific protection scope of the present utility model.

[0039] In the claims, description and above-mentioned drawings of the present utility model, unless otherwise clearly defined, if the terms "fixed connection" or "fixedly connected" are used, they should be understood in a broad sense, that is, any connection method without displacement relationship and relative rotation relationship between the two, that is, including non-detachable fixed connection, detachable fixed connection, being integrally connected, and being fixedly connected through other devices or elements.

[0040] In the claims, description and above-mentioned drawings of the present utility model, if the terms "comprising", "having" and their variants are used, they are intended to mean "including but not limited to".

[0041] See Figures 1-6 , Figure 1 shows an electrical module 10, which is provided with a cable extending from a connection end, and a waterproof connector for the cable is installed at the connection end. Hereinafter, the outer wall where the connection end of the electrical module 10 is located is defined as the front wall 11, and the structure of the waterproof connector is described.

[0042] See Figures 2-6 , the waterproof connector includes an elastic seal 20, a connecting member 30 and a clamping member 40.

[0043] See Figure 3 , the elastic seal 20 extends from the first end 21 along the circumferential direction of the cable to the second end 22. The elastic seal 20 is adapted to deform to form an opening suitable for the cable to enter when the first end 21 and the second end 22 are away from each other, and to join to form a first through hole 23 suitable for sleeving outside the cable when the first end 21 and the second end 22 are in contact with each other. The first through hole 23 is a circular through hole. The first end 21 of the elastic seal 20 is provided with a first abutting surface (not shown in the figure) inclined with respect to the radial direction of the cable. The second end 22 of the elastic seal 20 is provided with a second abutting surface (not shown in the figure) adapted to the first abutting surface. When the elastic seal 20 is not stressed, the first abutting surface and the second abutting surface are in contact with each other. Among them, see Figure 4 , an annular flange 24 is provided outside one end of the elastic seal 20, see Figure 6, a contact surface 241 is formed on the surface of the annular flange 24 facing the other end.

[0044] See Figure 4 , the connecting member 30 includes at least two connectors 31 arranged circumferentially along the cable. See Figure 6 , each connector 31 is adapted to be connected and enclosed to form a second through hole 34 adapted to be sleeved outside the elastic seal 20; the connecting member 30 is also provided with an external thread portion 32 and a deformation portion 33 arranged along the extending direction of the cable when the connectors 31 are connected. See Figure 3 , the deformation portion 33 includes a plurality of ribs arranged circumferentially along the cable, and a deformation gap inclined with respect to the radial direction of the cable is formed between at least some of the ribs. In FIGS. 3-6, the connecting member 30 includes two connectors 31 arranged circumferentially along the cable.

[0045] See Figure 3 , the external thread portion 32 is provided with external thread segments 321 and smooth segments 322 at circumferential intervals. The external thread segments 321 are provided with external threads, and the smooth segments 322 are formed at the connection of each connector 31 and are recessed inward with respect to the external thread segments 321. See Figure 4 , each connector 31 is provided with smooth portions 311 perpendicular to the radial direction of the cable at both circumferential ends. When the connectors 31 are connected, two adjacent smooth portions 311 are smoothly transitioned and butted to form a smooth segment 322.

[0046] See Figures 3-4 , the deformation portion 33 includes a plurality of first ribs 331 arranged at circumferential intervals and a plurality of second ribs 332 arranged at intervals along the tangential direction of the cable. Each first rib 331 corresponds to the external thread segment 321 in the extending direction of the cable, and each second rib 332 corresponds to the smooth segment 322 in the extending direction of the cable. The two circumferential ends of each first rib 331 are provided with third contact surfaces inclined with respect to the radial direction of the cable to form a deformation gap between adjacent first ribs 331, and the two circumferential ends of each second rib 332 are provided with fourth contact surfaces extending along the radial direction of the cable. Figure 3 In, the two circumferential ends of the first rib 331 close to the smooth segment 322 respectively form a third contact surface inclined with respect to the radial direction and a fourth contact surface extending with respect to the radial direction. Figures 3-4 In, each first rib 331 extends from the end of the external thread segment 321, and each second rib 332 extends from the end of the smooth segment 322.

[0047] See Figure 6 , a ring-shaped boss is convexly provided in the second through hole 34 corresponding to the external thread portion 32. The surface of the ring-shaped boss facing the end where the deformation portion 33 is located forms a support surface 341 perpendicular to the extending direction of the cable, and the support surface 341 is adapted to support the contact surface 241.

[0048] SeeFigure 4 and Figure 6 Each connector 31 includes a body 312, a first connecting portion 313 and a second connecting portion 314. The bodies 312 are connected to each other and enclose a second through hole 34. Each first connecting portion 313 is integrally formed with the body 312 and is adapted to abut against the outer surface of the front wall 11. The second connecting portions 314 are connected to each other and enclose a fourth through hole 315 adapted to be sleeved outside the connecting member 30. A through hole through which each body 312 can penetrate is formed at the connecting end of the front wall 11 so that the connecting member 30 also partially penetrates the front wall 11, and the front wall 11 is clamped between the first connecting portion 313 and the second connecting portion 314. The first connecting portions 313 are snap-connected and / or screwed to each other, and the second connecting portions 314 are snap-connected and / or screwed to each other.

[0049] See Figure 4 and Figure 6 The holding member 40 includes at least two holding heads 41 arranged circumferentially along the cable. Each holding head 41 is adapted to be connected and enclose a third through hole 42 adapted to be sleeved outside the connecting member 30. The third through hole 42 includes an internal thread portion 43 that cooperates with the external thread portion 32 and a contraction portion 44 that cooperates with the deformation portion 33. The inner diameter of the contraction portion 44 gradually decreases in a direction away from the internal thread portion 43. The holding member 40 is configured to move relative to the connecting member 30 along the extending direction of the cable when the internal thread portion 43 rotates in the screwing direction with the external thread portion 32, so that the contraction portion 44 radially presses the deformation portion 33 to clamp the elastic seal 20. The screwing direction means the direction in which the thread fit between the internal thread portion 43 and the external thread portion 32 increases.

[0050] The usage method of the waterproof joint in this embodiment is as follows:

[0051] During installation, separate the first end 21 and the second end 22 of the elastic seal 20 from each other so that the cable enters the elastic seal 20 radially. At this time, although the elastic seal 20 is sleeved outside the cable, it is not yet in close fit with the cable. Then, connect the bodies 312 of the connecting member 30 to each other to form a second through hole 34 sleeved outside the elastic seal 20, penetrate each body 312 through the through hole of the front wall 11, snap-connect and enclose the second connecting portions 314 to form a fourth through hole 315 sleeved outside the body 312, and snap-connect the first connecting portions 313. The elastic seal 20 is then located in the second through hole 34 and is pressed by the deformation portion 33, but at this time, there is still no close fit between the deformation portion 33 and the elastic seal 20;

[0052] Next, each clamping head 41 of the clamping member 40 is clamped to each other and encloses to form a third through hole 42. The third through hole 42 forms an internal thread portion 43 that cooperates with the external thread portion 32 and a contraction portion 44 that cooperates with the deformation portion 33. When the clamping member 40 rotates along the screwing direction with the external thread portion 32 in the internal thread portion 43, the clamping member 40 moves relative to the connecting member 30 along the extending direction of the cable. Since the inner diameter of the contraction portion 44 gradually decreases in the direction away from the internal thread portion 43, a deformation gap that is inclined with respect to the radial direction of the cable is formed between the first rib strips 331 of the deformation portion 33. Therefore, when the contraction portion 44 rotates along the screwing direction with the external thread portion 32 in the internal thread portion 43, the contraction portion 44 radially presses the deformation portion 33. The tangential component of the pressing force causes the deformation gap to decrease, and the deformation portion 33 contracts and clamps the elastic seal 20, so that the elastic seal 20 is closely fitted with the cable. Among them, the contraction portion 44 and each deformation portion 33 can be formed with different degrees of extrusion by rotating the clamping member 40. When the cable is thicker, the contraction portion 44 is made to be farther away from the external thread portion 32. When the cable is thinner, the contraction portion 44 can be made to be closer to the external thread portion 32;

[0053] When disassembling, first disassemble the multiple clamping heads 41, then disassemble the multiple connecting heads 31, and then move the first end 21 and the second end 22 of the elastic seal 20 away from each other so that the cable radially disengages from the elastic seal 20.

[0054] After installation, the elastic seal 20 is hermetically fitted with the cable under the action of the connecting member 30 and the clamping member 40, so that a waterproof structure can be formed outside the cable. When the waterproof joint is connected to the electrical module 10, the waterproof and dustproof performance can be improved.

[0055] In this embodiment, through the cooperation of the clamping member 40 and the connecting member 30, the elastic seal 20 can be closely fitted with the cable, so that cables of different specifications can be adapted, and the cost is low; and since the elastic seal 20, the connecting member 30, and the clamping member 40 are all splicing structures, when maintenance is required, the connecting portion and the clamping member 40 can be disassembled without disconnecting the connection between the cable and the outside, and the disassembly and assembly are convenient; in addition, compared with the structure in which the elastic seal 20 does not form an opening on the side, when installing the waterproof joint, it is often necessary to pass the free end of the cable through the elastic seal 20, and then gradually move the elastic seal 20 along the extending direction of the cable to the connection end of the electrical module 10. When disassembling, it is the reverse. In order to ensure the sealing performance, the elastic seal 20 is closely fitted with the cable, and the resistance is very large during the moving process, so the whole operation is time-consuming and laborious. The structure of the elastic seal 20 in this technical solution also makes the operation simpler when sleeved on the cable.

[0056] In this embodiment, a first abutting surface is provided at the first end 21, and a second abutting surface is provided at the second end 22. When the elastic seal 20 is not stressed, the first abutting surface and the second abutting surface abut against each other. On the one hand, the first end 21 and the second end 22 can be directly formed by cutting after the elastic seal 20 is processed, which is beneficial to processing. On the other hand, the cooperation of the first abutting surface and the second abutting surface enables the elastic seal 20 not to be easily detached from the abutment due to extrusion deformation when being extruded by the connecting member 30. Instead, it is closely attached due to the tangential component force of the extrusion force, thereby improving the protection effect.

[0057] In this embodiment, the external thread portion 32 is provided with external thread segments 321 and smooth segments 322 at intervals in the circumferential direction. The external thread segments 321 are provided with external threads, and the smooth segments 322 are formed at the joints of the respective connectors 31 and are recessed inward relative to the external thread segments 321. Therefore, when the connecting member 30 is processed, a complete circle of external threads can be first processed, and the connecting member 30 can be cut into a plurality of connectors 31. Then, at the cutting position, that is, at the joint of the connectors 31, the external threads are cut off along the extending direction of the connecting member 30 to form the smooth segments 322. In this way, after the respective connectors 31 are connected, the external threads of the respective connectors 31 correspond to each other, and the setting of the smooth segments 322 avoids the non-smoothness of the external threads caused by the deformation caused by the cutting of the external threads after the respective connectors 31 are connected. Since the smooth segments 322 are recessed inward relative to the external thread segments 321, the smooth segments 322 not only do not interfere with the rotation of the clamping member 40, but also enable the clamping member 40 to rotate smoothly relative to the connecting member 30.

[0058] In this embodiment, smooth portions 311 perpendicular to the radial direction of the cable are respectively provided at both ends of each connector 31 in the circumferential direction. When the respective connectors 31 are connected, the two adjacent smooth portions 311 are smoothly transitioned and butt-jointed to form a smooth segment 322. The smooth portions 311 are perpendicular to the radial direction of the cable, so that the smooth segment 322 formed by the butt-joint of the two smooth portions 311 is located in the same plane and perpendicular to the radial direction of the cable. Therefore, the smooth segment 322 is more inwardly contracted relative to the external thread segment 321 and is more likely to extrude the deformation portion 33, thereby making up for the defect of the weaker extrusion force brought about by the smooth segment 322 being located at the joint of the two connectors 31, and making the overall extrusion force of the connecting member 30 on the elastic seal 20 more balanced.

[0059] In this embodiment, each first rib 331 corresponds to the external thread section 321 in the extending direction of the cable, and each second rib 332 corresponds to the smooth section 322 in the extending direction of the cable. Third abutting surfaces that are inclined relative to the radial direction of the cable are provided at both ends of the first rib 331 to form a deformation gap between adjacent first ribs 331. Fourth abutting surfaces that extend along the radial direction of the cable are provided at both ends of the second rib 332. Therefore, after the deformation part 33 is squeezed by the clamping member 40, each first rib 331 is affected by the tangential component of the squeezing force of the clamping member 40 and approaches each other, thereby reducing the deformation gap. Each second rib 332 is affected by the squeezing force of the clamping member 40, causing each smooth part 311 to abut against each other. Therefore, the above arrangement not only ensures the contraction of the deformation part 33 after being squeezed, but also ensures the stable connection of each connector 31.

[0060] In this embodiment, each first rib 331 extends from the end of the external thread section 321, and each second rib 332 extends from the end of the smooth section 322, making the structure of the connecting member 30 more compact than the structure with a gap formed between the deformation part 33 and the external thread part 32. Similarly, the structure of the clamping member 40 is also made more compact.

[0061] In this embodiment, a support surface 341 with an opening facing the end where the deformation part 33 is located is provided in the second through hole 34 corresponding to the external thread part 32. The elastic seal 20 is provided with an abutting surface 241 adapted to abut against the support surface 341. Therefore, both ends of the elastic seal 20 along the extending direction of the cable are restricted by the contraction part 44 of the clamping member 40 and the support surface 341, and it is not easy to slide relative to the connecting member 30 and the clamping member 40 along the extending direction of the cable, and the connection is more stable.

[0062] In this embodiment, the front wall 11 is clamped between the first connecting part 313 and the second connecting part 314, so that when the waterproof joint needs to be disassembled, it has to be disassembled from inside the electrical module 10, achieving the effect of anti-theft. Each first connecting part 313 is clamped and / or screwed to each other, each second connecting part 314 is clamped and / or fixed to each other, and each clamping head 41 is clamped and / or fixed to each other, and the structure is simple and easy to install. Figure 2 In, the two connectors 31 are clamped to each other, Figure 3 In, the two clamping heads 41 are clamped to each other. In other ways, the connectors 31 and the clamping heads 41 can also be clamped or screwed at the same time. This embodiment does not limit this.

[0063] The description of the above specification and embodiments is used to explain the protection scope of the present utility model, but does not constitute a limitation to the protection scope of the present utility model. Modifications, equivalent replacements or other improvements to the embodiments of the present utility model or some of its technical features obtained by those of ordinary skill in the art through logical analysis, reasoning or limited experiments in combination with common general knowledge, ordinary technical knowledge in this field and / or the prior art under the inspiration of the present utility model or the above embodiments shall be included within the protection scope of the present utility model.

Claims

1. A waterproof connector for a cable, characterized in that: include An elastic sealing member (20) extends from a first end (21) to a second end (22) along the circumference of the cable, the elastic sealing member (20) being adapted to deform to form an opening suitable for the cable to enter when the first end (21) and the second end (22) are away from each other, and to join to form a first through hole (23) suitable for being sleeved outside the cable when the first end (21) and the second end (22) are in contact with each other; A connector (30), comprising at least two connectors (31) arranged along the circumference of the cable, each connector (31) being suitable for connecting and enclosing to form a second through hole (34) suitable for being sleeved outside the elastic seal (20), the connector (30) also being provided with an external threaded portion (32) and a deformable portion (33) along the extension direction of the cable when each connector (31) is connected, the deformable portion (33) comprising a plurality of ribs arranged along the circumference of the cable, at least some of the ribs forming a deformation gap inclined relative to the radial direction of the cable; and A clamping member (40) comprises at least two clamping heads (41) arranged along the circumference of the cable, each clamping head (41) is suitable for connecting and enclosing to form a third through hole (42) suitable for being sleeved outside the connecting member (30), the third through hole (42) comprises an internal threaded portion (43) cooperating with the external threaded portion (32) and a contraction portion (44) cooperating with the deformation portion (33), the inner diameter of the contraction portion (44) gradually decreases in a direction away from the internal threaded portion (43); the clamping member (40) is configured to move relative to the connecting member (30) along the extension direction of the cable when the internal threaded portion (43) rotates along the threaded connection direction with the external threaded portion (32), so that the contraction portion (44) radially squeezes the deformation portion (33) and causes each deformation portion (33) to clamp the elastic sealing member (20).

2. A waterproof connector for cables as claimed in claim 1, characterized in that: The first end (21) is provided with a first abutting surface inclined relative to the radial direction of the cable, and the second end (22) is provided with a second abutting surface adapted to the first abutting surface. When the elastic sealing member (20) is not subjected to force, the first abutting surface and the second abutting surface abut against each other.

3. A waterproof connector for cables as claimed in claim 2, characterized in that: The external threaded portion (32) is provided with external threaded sections (321) and smooth sections (322) spaced apart along the circumferential direction, the external threaded section (321) is provided with external threads, and the smooth section (322) is formed at the connection of each connector (31) and is recessed inwardly relative to the external threaded section (321).

4. A waterproof connector for cables as claimed in claim 3, characterized in that: Each connector (31) is provided with smooth portions (311) perpendicular to the radial direction of the cable at both ends along the circumferential direction, and when the connectors (31) are connected, two adjacent smooth portions (311) smoothly transition and butt to form the smooth section (322).

5. A waterproof connector for cables as claimed in claim 4, characterized in that: The deformation portion (33) comprises a plurality of first ribs (331) arranged at intervals along the circumferential direction and a plurality of second ribs (332) arranged at intervals along the tangent direction of the cable, each first rib (331) corresponds to the external thread section (321) in the extension direction of the cable, and each second rib (332) corresponds to the smooth section (322) in the extension direction of the cable, and the first ribs (331) are provided with third abutment surfaces inclined relative to the radial direction of the cable at both ends along the circumferential direction to form the deformation gap between adjacent first ribs (331), and the second ribs (332) are provided with fourth abutment surfaces extending in the radial direction of the cable at both ends along the circumferential direction.

6. A waterproof connector for cables as claimed in claim 5, characterized in that: Each first rib (331) extends from an end of the external thread section (321), and each second rib (332) extends from an end of the smooth section (322).

7. A waterproof connector for cables as claimed in claim 6, characterized in that: A supporting surface (341) is provided in the second through hole (34) corresponding to the external threaded portion (32) and is open toward the end where the deformation portion (33) is located, and the elastic sealing component (20) is provided with a contact surface (241) suitable for contacting the supporting surface (341).

8. A waterproof connector for cables as claimed in claim 1, characterized in that: The cable extends from the connection end of the electrical module (10), and the outer wall where the connection end of the electrical module (10) is located is defined as the front wall (11). Each connector (31) includes a body (312), a first connection part (313) and a second connection part (314). The bodies (312) are connected to each other and enclose to form the second through hole (34). The first connection parts (313) are fixedly connected to the outside of the body (312) and are suitable for abutting the outer surface of the front wall (11). The second connection parts (314) are connected to each other and enclose to form a fourth through hole (315) suitable for being sleeved outside the body (312); the front wall (11) is sandwiched between the first connection part (313) and the second connection part (314).

9. A waterproof connector for cables as claimed in claim 8, characterized in that: The first connection parts (313) are clamped and / or screwed to each other, the second connection parts (314) are clamped and / or screwed to each other, and the clamping heads (41) are clamped and / or screwed to each other.

10. An electrical module (10), characterized in that: It is provided with a cable extending from a connection end, and adopts the waterproof connector for cables described in any one of claims 1-9.

Images