阅读说明：本技术 一种电缆连接件及连接方法 (Cable connecting piece and connecting method ) 是由 邵培宏 于 2021-10-19 设计创作，主要内容包括：本发明公开了一种电缆连接件及连接方法,包括两根相互对接的外管件,以及拼装于两根所述外管件之间,且位于外管件内侧的连接盘,所述连接盘的盘面上环形分布有多个置入孔,通过所述置入孔配合有固线装置,通过所述固线装置装配有线束,所述线束的穿过所述固线装置,所述线束位于所述固线装置外部的部分为螺旋部分；所述外管件的两端均安装有端盖,在所述端盖的轴心处穿插有固定电缆用的活动固定装置,电缆的线芯与线束之间对接,对接位置处包裹绝缘胶布；本装置可以实现电缆的对接以及缓冲。(The invention discloses a cable connecting piece and a connecting method, wherein the cable connecting piece comprises two outer pipe pieces which are mutually butted and a connecting disc which is assembled between the two outer pipe pieces and is positioned at the inner side of the outer pipe pieces, a plurality of insertion holes are annularly distributed on the disc surface of the connecting disc, a wire fixing device is matched through the insertion holes, a wire harness is assembled through the wire fixing device, the wire harness penetrates through the wire fixing device, and the part of the wire harness positioned outside the wire fixing device is a spiral part; end covers are arranged at two ends of the outer pipe, a movable fixing device for fixing a cable is inserted in the axis of each end cover, a wire core of the cable is in butt joint with a wire harness, and an insulating tape is wrapped at the butt joint position; the device can realize the butt joint and the buffering of the cable.)

1. A cable connector characterized by: the connecting plate is characterized by comprising two outer pipe pieces (1) which are butted with each other and a connecting plate (2) which is spliced between the two outer pipe pieces (1) and is positioned on the inner side of the outer pipe pieces (1), wherein a plurality of insertion holes (201) are annularly distributed on the disc surface of the connecting plate (2), a wire fixing device (3) is matched through the insertion holes (201), a wire harness (301) is assembled through the wire fixing device (3), the wire harness (301) penetrates through the wire fixing device (3), and the part of the wire harness (301) positioned outside the wire fixing device (3) is a spiral part (302); end covers (101) are installed at two ends of the outer pipe (1), a movable fixing device (4) for fixing a cable is inserted into the axis of the end covers (101), the cable core of the cable is in butt joint with the wire harness (301), and an insulating tape is wrapped at the butt joint position.

2. The cable connector of claim 1, wherein: a storage cavity (211) is arranged at the axis of the connecting disc (2), connecting pipes (212) with internal threads are arranged at the axes of two ends of the storage cavity (211), a bolt (213) is connected with the connecting pipes (212) in a threaded manner, an insulating cap (214) made of rubber is clamped at the end part of the bolt (213), the insulating cap (214) is conical, the diameter of the insulating cap is gradually reduced towards the direction far away from the bolt (213), a plurality of convex separating sheets (215) are annularly arranged at the outer wall of the insulating cap (214), and the butting position of the wiring harness (301) and the cable core is positioned between the adjacent separating sheets (214); air vents (221) are uniformly distributed on the outer wall of the storage cavity (211).

3. The cable connector of claim 2, wherein: a hollow energy absorption cavity (216) is arranged in the insulating cap (214) at a position close to the end part; -the end of the cable contacts the end of the insulating cap (214) with the mobile fastening means (4) in an unstretched condition; when the cable moves towards the direction far away from the outer pipe (1), the movable fixing device (4) is compressed and absorbs energy, and the end part of the cable is separated from the end part of the insulating cap (214); when the pulling force disappears, the movable device (4) rebounds and contacts the end part of the cable to absorb energy through the insulating cap (214).

4. The cable connector according to claim 1 or 3, wherein: the movable fixing device (4) comprises a movable pipe (401), one end of the movable pipe (401) is inserted into the outer pipe (1), the other end of the movable pipe is positioned outside the outer pipe (1), an outer ring part (402) is arranged on the outer wall of the end of the movable pipe positioned in the outer pipe (1), and the outer ring part (402) is contacted with the inner wall of the outer pipe (1); the movable tube (401) is internally provided with a stepped hole (403), a fixed cable is installed in a small hole part of the stepped hole (403), a large hole part of the stepped hole (403) is in threaded connection with an acting tube (404), a clamping ring (405) made of elastic rubber is arranged on a stepped surface of the stepped hole (403), the acting tube (404) acts on the clamping ring (405), the clamping ring (405) is clamped, fixed and sealed with a cable shell after the inner diameter of the clamping ring (405) is reduced, and the outer diameter of the clamping ring (405) is expanded and then contacts with the outer wall of the stepped hole (403) and is sealed; a plurality of guide rods (441) are annularly arranged on the end face of the outer ring part (401), a guide hole (121) penetrating through the guide rods (441) is annularly arranged on the outer end face of the end cover (101), a limiting nut (442) is matched with the guide rods (441) after the guide rods (441) penetrate through the guide hole (121), a spring (443) is matched with the rod body of the guide rods (441), and the spring (443) acts between the end cover (101) and the outer ring part (401).

5. The cable connector of claim 2, wherein: a guide seat (222) for positioning the spiral part (302) is provided at an outer wall of the connection pipe (212), the guide seat (222) having a U-shaped groove (223) passing through the spiral part (302), the U-shaped groove (223) having a groove width larger than an outer diameter of the spiral part (302).

6. The cable connector of claim 1, wherein: the wire fixing device (3) comprises an insulating tube (311), a plurality of stepped grooves (312) are annularly formed in the outer wall of the insulating tube (311), and clamping pieces (313) made of rubber materials are embedded in the stepped grooves (312); the insulation tube (311) passes through the placing-in hole (201); a first nut (314) is matched at both ends of the insulating tube (311); a strip-shaped groove (288) corresponding to the stepped groove (312) is annularly arranged on the hole wall of the placing hole (201); an arc-shaped elastic sheet (315) is arranged in the strip-shaped groove (288); two ends of the elastic sheet (315) are bent outwards to form a stressed part (316); the force-receiving portion (316); the stressed portion (316) contacts the bottom of the slot (288); under the condition that the elastic sheet (315) is not stressed, two ends of the elastic sheet (315) protrude out of the strip-shaped groove (288); when the first nuts (314) at the two ends are installed in place, the first nuts (314) at the two ends extrude the stress part (316), the elastic sheet (315) deforms towards the direction of the stepped groove (312) and extrudes the clamping sheet (313), and the clamping sheet (313) deforms inwards and then extrudes the wiring harness (301).

7. The cable connector of claim 2, wherein: an annular groove is formed in the outer wall of the connecting disc (2), and an outer sealing ring (299) made of rubber is matched with the annular groove; a flange plate (188) is arranged at the butt joint position of the outer pipe (1); the connecting disc (2) is clamped in the flange plate (188), the outer sealing ring (299) is extruded and deformed by the flange plate (188) and then protrudes outwards, and sealing is formed at the joint position of the flange plate (188); a first bolt (199) is matched between the two flange plates (188); a sealing washer (177) is arranged on the outer side of the first bolt (199) in front of the two flanges (188).

8. The cable connector according to claim 7, wherein: a small-diameter part (166) is arranged at the position, close to the flange plate (188), of the outer pipe element (1); a drain hole (155) is formed in the outer wall of the outer pipe (1); the drain hole (155) is adjacent to the end cap (101).

9. A method of connecting a cable connector according to any one of claims 1 to 8, wherein: the method comprises the following steps:

step 1: firstly, stripping two sections of cables to be butted, and exposing wire cores to be connected;

step 2: sleeving the end cover (101) on the cable, and inserting one end of the cable, which needs to be butted, into the movable fixing device (4); assembling the movable fixing device (4) with the outer pipe (1) and fixing the end cover (101), wherein the movable fixing device (4) can slide along the axial direction of the outer pipe (1) and is limited by the end cover (101);

and step 3: butting wire cores of the cable with a wiring harness (301), and wrapping an insulating tape at the butting position;

and 4, step 4: the two outer pipes (1) are butted, and the connecting disc (2) is clamped and fixed through the outer pipes (1).

Technical Field

The invention relates to a cable connecting piece and a connecting method.

Background

The length of the cable is limited and therefore the cable needs to be butted at the connection location.

The existing butt joint method is to strip wires of two sections of cables to be in butt joint, then separate wire core parts, connect corresponding wire core parts, then clamp and fix the connection position of the cables through an external shell, and cover an insulating tape for sealing.

When the connection mode is used for the butt joint of small cables, the traditional fixing mode can meet the fixing requirement due to the fact that the dead weight of the small cables is small and the windward area is small.

However, when the span of the cable is large and the connection position is close to the middle of the cable, the cable is connected at the position, the sagging of the cable is obvious, and the amplitude of the windward shaking is large due to the large wire diameter of the cable.

Based on the problems, a cable connecting piece and a connecting method capable of realizing butt joint and buffering of cables are designed.

Disclosure of Invention

The invention aims to provide a cable connecting piece and a connecting method which can realize butt joint and buffering of cables.

In order to solve the problems, the invention adopts the following technical scheme:

a cable connecting piece comprises two outer pipe pieces which are mutually butted and a connecting disc which is assembled between the two outer pipe pieces and is positioned at the inner side of the outer pipe pieces, wherein a plurality of insertion holes are annularly distributed on the disc surface of the connecting disc, a wire fixing device is matched through the insertion holes, a wire harness is assembled through the wire fixing device, the wire harness penetrates through the wire fixing device, and the part of the wire harness positioned outside the wire fixing device is a spiral part; the end covers are installed at two ends of the outer pipe, the movable fixing device for fixing the cable is inserted into the axis of each end cover in a penetrating mode, the cable core of the cable is in butt joint with the wire harness, and the butt joint position is wrapped by the insulating tape.

Preferably, a storage cavity is arranged at the axis of the connecting disc, connecting pipes with internal threads are arranged at the axes of two ends of the storage cavity, a bolt is connected through the connecting pipes in a threaded manner, an insulating cap made of rubber is clamped at the end part of the bolt, the insulating cap is conical, the diameter of the insulating cap is gradually reduced towards the direction far away from the bolt, a plurality of convex separating sheets are annularly arranged at the outer wall of the insulating cap, and the butt joint position of the wire harness and the cable core is positioned between the adjacent separating sheets; and vent holes are uniformly distributed on the outer wall of the storage cavity.

The storage cavity can store the insect repelling and the drying agent, so that the internal drying of the device is ensured, and the power supply short circuit caused by air humidity is avoided.

Preferably, a hollow energy absorption cavity is arranged in the insulation cap at a position close to the end part; with the movable fixture in an unstretched condition, the end of the cable contacts the end of the insulative cap; when the cable moves towards the direction far away from the outer pipe, the movable fixing device compresses and absorbs energy, and the end part of the cable is separated from the end part of the insulating cap; when the pulling force disappears, the movable device rebounds and contacts the end part of the cable through the insulating cap to absorb energy.

The insulating cap is made of insulating rubber, mutual contact at the connecting position of the wire harness can be avoided by adopting the insulating cap, and short circuit caused by contact is avoided.

The arrangement of the insulating cap can provide the guiding function of the return of the wiring harness when the cable is axially displaced along the outer pipe.

The setting of insulating cap can contact the tip of cable when the cable return, plays the spacing effect of cable return.

Preferably, the movable fixing device comprises a movable pipe, one end of the movable pipe is inserted into the outer pipe, the other end of the movable pipe is positioned outside the outer pipe, and an outer ring part is arranged at the outer wall of the end of the movable pipe positioned in the outer pipe and contacts with the inner wall of the outer pipe; the movable pipe is internally provided with a stepped hole, a fixed cable is arranged in a small hole part of the stepped hole, a large hole part of the stepped hole is in threaded connection with an acting pipe, a clamping ring made of elastic rubber is arranged on a stepped surface of the stepped hole, the acting pipe acts on the clamping ring, the clamping ring is clamped, fixed and sealed with a cable shell after the inner diameter of the clamping ring is reduced, and the outer diameter of the clamping ring is expanded and then contacts with the outer wall of the stepped hole and is sealed; the end face of the outer ring part is annularly provided with a plurality of guide rods, the outer end face of the end cover is annularly provided with guide holes penetrating through the guide rods, the guide rods are matched with limiting nuts after penetrating through the guide holes, the rod bodies of the guide rods are matched with springs, and the springs act between the end cover and the outer ring part.

Among the foretell technical scheme, let the grip ring play fixed effect and sealed effect to the cable through the mode of screw in effect pipe.

In the technical scheme, when the cable is stretched under the external action, a certain stretching space can be provided in a mode of compressing the spring, and the stretching movement can be adapted through the spiral part of the wiring harness. By means of the movable abutment of the cables, a disconnection at the joint location due to pulling can be avoided.

Preferably, a guide seat for positioning the spiral part is provided at an outer wall of the connection pipe, the guide seat having a U-shaped groove passing through the spiral part, the U-shaped groove having a groove width larger than an outer diameter of the spiral part.

The technical scheme mainly limits the wire harnesses, and avoids entanglement between adjacent wire harnesses when the cable moves.

Preferably, the wire fixing device comprises an insulating pipe, a plurality of stepped grooves are annularly formed in the outer wall of the insulating pipe, and clamping pieces made of rubber materials are embedded in the stepped grooves; the insulating tube penetrates through the placing hole; the two ends of the insulating tube are matched with first nuts; a strip-shaped groove corresponding to the stepped groove is annularly arranged on the hole wall of the embedding hole; an arc-shaped elastic sheet is arranged in the strip-shaped groove; two ends of the elastic sheet are bent outwards to form a stressed part; the force-receiving portion; the stressed part is contacted with the groove bottom of the strip-shaped groove; under the condition that the elastic sheet is not stressed, two ends of the elastic sheet protrude to the outside of the strip-shaped groove; when the first nuts at the two ends are installed in place, the first nuts at the two ends extrude the stress part, at the moment, the elastic sheet deforms towards the stepped groove and extrudes the clamping sheet, and the wire harness is extruded after the clamping sheet deforms inwards.

The wire fixing device is used for fixing the wire harness

Preferably, an annular groove is formed in the outer wall of the connecting disc, and an outer sealing ring made of rubber is matched with the annular groove; a flange plate is arranged at the butt joint position of the outer pipe piece; the connecting disc is clamped in the flange plate, the outer sealing ring is extruded and deformed by the flange plate and then protrudes outwards, and sealing is formed at the joint position of the flange plate; a first bolt is matched between the two flange plates; and a sealing gasket is arranged at the outer side of the first bolt in front of the two flanges.

In the technical scheme, the outer sealing ring is promoted to generate transverse deformation under the clamping action of the flange plates, so that the outer diameter of the outer sealing ring is increased, and the inner side of a joint between the two flange plates is sealed through the expanded outer sealing ring after the outer sealing ring is increased.

Preferably, the outer pipe member is provided with a small-diameter portion at a position close to the flange; a drain hole is formed in the outer wall of the outer pipe; the drain hole is close to the end cover.

According to the technical scheme, water vapor in the outer pipe can be discharged, and the outer pipe is provided with the small-caliber part, so that water can be prevented from entering the flange.

A connecting method of a cable connector comprises the following steps: the method comprises the following steps:

step 1: firstly, stripping two sections of cables to be butted, and exposing wire cores to be connected;

step 2: sleeving the end cover on the cable, and inserting one end of the cable to be butted into the movable fixing device; assembling the movable fixing device and the outer pipe element, and fixing the end cover; the movable fixing device can slide along the axial direction of the outer pipe fitting and is limited by the end cover;

and step 3: butting wire cores of the cable with a wire harness, and wrapping an insulating tape at the butting position;

and 4, step 4: and butting the two outer pipes, and clamping and fixing the connecting disc through the outer pipes.

The invention has the beneficial effects that:

1. the device is convenient to realize the butt joint of the cables, the assembly is more convenient, and the sealing performance of the cables after the butt joint is finished is better;

2. after the device finishes the butt joint of the cables, the cables can axially displace along the outer pipe, and the pulling force generated when the cables shake can be alleviated in a displacement mode, so that the cables are prevented from being disconnected at the connecting position;

3. in the device, the displacement of the cable is adapted through the stretching and the compression of the spiral part on the wire harness, so that the abutting position of the wire core is not subjected to obvious tension, and the disconnection of the abutting position is avoided;

4. the structure of this device is comparatively simple, and the cost is comparatively cheap, is fit for using widely.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a cross-sectional view of the present invention;

FIG. 2 is a cross-sectional view of the connecting disc;

FIG. 3 is an enlarged view of a portion of FIG. 1 at A;

FIG. 4 is an enlarged view of a portion of FIG. 2 at B;

FIG. 5 is a schematic view of the movable fixture;

FIG. 6 is a side view of the insulator cap;

FIG. 7 is a side view of the interface disc;

fig. 8 is a side view of the guide shoe.

Detailed Description

All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.

Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.

In the description of the present invention, it is to be understood that the terms "one end", "the other end", "outside", "upper", "inside", "horizontal", "coaxial", "central", "end", "length", "outer end", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.

Further, in the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise explicitly specified or limited, the terms "disposed," "sleeved," "connected," "penetrating," "plugged," and the like are to be construed broadly, e.g., as a fixed connection, a detachable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

As shown in fig. 1 to 8.

Example 1

A cable connecting piece comprises two outer pipe pieces 1 which are mutually butted and a connecting disc 2 which is assembled between the two outer pipe pieces 1 and is positioned at the inner side of the outer pipe pieces 1, wherein a plurality of insertion holes 201 are annularly distributed on the disc surface of the connecting disc 2, a wire fixing device 3 is matched through the insertion holes 201, a wire harness 301 is assembled through the wire fixing device 3, the wire harness 301 penetrates through the wire fixing device 3, and the part of the wire harness 301, which is positioned outside the wire fixing device 3, is a spiral part 302; the two ends of the outer pipe element 1 are respectively provided with an end cover 101, a movable fixing device 4 for fixing the cable is inserted into the axis of the end cover 101, the wire core of the cable is in butt joint with the wire harness 301, and the butt joint position is wrapped by an insulating tape.

Example 2

A storage cavity 211 is arranged at the axis of the connecting disc 2, connecting pipes 212 with internal threads are arranged at the axes of two ends of the storage cavity 211, a bolt 213 is connected with the connecting pipes 212 in a threaded manner, an insulating cap 214 made of rubber is clamped at the end part of the bolt 213, the insulating cap 214 is conical, the diameter of the insulating cap is gradually reduced towards the direction far away from the bolt 213, a plurality of convex separating sheets 215 are annularly arranged at the outer wall of the insulating cap 214, and the butting position of the wire harness 301 and the cable core is positioned between the adjacent separating sheets 214; air vents 221 are uniformly distributed at the outer wall of the storage cavity 211.

The storage cavity 211 can store insect repelling and drying agents, so that the interior of the device is dry, and power supply short circuit caused by air humidity is avoided.

Example 3

A hollow energy absorption cavity 216 is arranged in the insulating cap 214 at a position close to the end part; with the mobile fastening means 4 under no tension, the end of the cable contacts the end of the insulating cap 214; when the cable moves away from the outer tube 1, the movable fixing device 4 is compressed and absorbs energy, and the end of the cable is separated from the end of the insulating cap 214; when the pulling force disappears, the traveller 4 springs back, absorbing energy through the end of the insulation cap 214 contacting the cable.

The insulation cap 214 is made of insulation rubber, and mutual contact at the connection position of the wiring harness can be avoided by adopting the insulation cap 214, so that short circuit caused by contact is avoided.

The insulative cap 214 is configured to provide a guide for the return of the harness during axial displacement of the cable along the outer tubular member.

The insulating cap 214 is arranged to contact the end of the cable when the cable is returned, so that the cable return limiting effect is achieved.

Example 4

The movable fixing device 4 comprises a movable tube 401, one end of the movable tube 401 is inserted into the outer pipe element 1, the other end of the movable tube is positioned outside the outer pipe element 1, an outer ring part 402 is arranged on the outer wall of the end of the movable tube 401 positioned in the outer pipe element 1, and the outer ring part 402 is contacted with the inner wall of the outer pipe element 1; the movable tube 401 is internally provided with a stepped hole 403, a fixed cable is installed in a small hole part of the stepped hole 403, an action tube 404 is connected with a large hole part of the stepped hole 403 in a threaded manner, a clamping ring 405 made of elastic rubber is arranged on a stepped surface of the stepped hole 403, the action tube 404 acts on the clamping ring 405, the clamping ring 405 is clamped, fixed and sealed with a cable shell after the inner diameter of the clamping ring 405 is reduced, and the outer diameter of the clamping ring 405 is expanded to contact with the outer wall of the stepped hole 403 and sealed; a plurality of guide rods 441 are annularly arranged on the end surface of the outer ring part 401, a guide hole 121 penetrating through the guide rods 441 is annularly arranged on the outer end surface of the end cover 101, the guide rods 441 are matched with a limiting nut 442 after penetrating through the guide hole 121, a spring 443 is matched on the rod body of the guide rods 441, and the spring 443 acts between the end cover 101 and the outer ring part 401.

In the above technical solution, the clamping ring 405 has a fixing effect and a sealing effect on the cable by screwing the acting tube 404.

In the above-mentioned technical solution, when the cable is stretched by external action, a certain stretching space can be provided by compressing the spring 443, and the stretching movement can be accommodated by the spiral portion 302 of the wire harness 301. By means of the movable abutment of the cables, a disconnection at the joint location due to pulling can be avoided.

Example 5

A guide holder 222 for positioning the spiral part 302 is provided at an outer wall of the coupling pipe 212, the guide holder 222 having a U-shaped groove 223 passing through the spiral part 302, the U-shaped groove 223 having a groove width larger than an outer diameter of the spiral part 302.

The technical scheme mainly limits the wire harnesses, and avoids entanglement between adjacent wire harnesses when the cable moves.

Example 6

The wire fixing device 3 comprises an insulating tube 311, a plurality of stepped grooves 312 are annularly arranged on the outer wall of the insulating tube 311, and clamping pieces 313 made of rubber are embedded in the stepped grooves 312; the insulation tube 311 passes through the insertion hole 201; a first nut 314 is fitted at both ends of the insulating tube 311; a strip-shaped groove 288 corresponding to the stepped groove 312 is annularly arranged on the hole wall of the insertion hole 201; an arc-shaped elastic sheet 315 is arranged in the strip-shaped groove 288; two ends of the elastic sheet 315 are bent outwards to form a force-bearing part 316; the force-receiving portion 316; the stressed portion 316 contacts the bottom of the slot 288; under the condition that the elastic sheet 315 is not stressed, two ends of the elastic sheet protrude to the outside of the strip-shaped groove 288; when the first nuts 314 at the two ends are mounted in place, the first nuts 314 at the two ends press the force-bearing part 316, the elastic sheet 315 deforms towards the stepped groove 312, the clamping sheet 313 is pressed, and the clamping sheet 313 deforms inwards to press the wire harness 301.

The wire fixing device 3 is used for fixing the wire harness

Example 7

An annular groove is formed in the outer wall of the connecting disc 2, and an outer sealing ring 299 made of rubber is matched with the annular groove; a flange 188 is arranged at the butt joint position of the outer pipe element 1; the connecting disc 2 is clamped in the flange 188, the outer sealing ring 299 is extruded and deformed by the flange 188 to protrude outwards, and sealing is formed at the joint position of the flange 188; a first bolt 199 is matched between the two flange plates 188; before the two flanges 188, a sealing washer 177 is arranged on the outer side of the first bolt 199.

In the above technical scheme, the outer sealing ring 299 is urged to deform transversely by the clamping action of the flange plates 188, so that the outer diameter of the outer sealing ring 299 is increased, and the inner side of the joint between the two flange plates 188 is sealed by the expanded outer sealing ring 299 after the outer sealing ring is increased.

Example 8

The outer tubular member 1 is provided with a small diameter section 166 adjacent the flange 188; a drain hole 155 is formed in the outer wall of the outer pipe element 1; the drain hole 155 is adjacent to the end cover 101.

The above technical solution can exhaust the water vapor inside the outer pipe member 1, and the outer pipe member 1 has the small-diameter portion 166 to prevent the water from entering the flange 188.

Example 9

A connecting method of a cable connector comprises the following steps: the method comprises the following steps:

step 1: firstly, stripping two sections of cables to be butted, and exposing wire cores to be connected;

step 2: sleeving the end cover 101 on the cable, and inserting one end of the cable to be butted into the movable fixing device 4; assembling the movable fixing device 4 and the outer pipe element 1, and fixing the end cover 101; the movable fixing device 4 can slide along the axial direction of the outer pipe element 1 and is limited by the end cover 101;

and step 3: butting the wire cores of the cable with a wire harness 301, and wrapping an insulating tape at the butting position;

and 4, step 4: and butting the two outer pipes 1, and clamping and fixing the connecting disc 2 through the outer pipes 1.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.