CN210245837U

CN210245837U - Tail attaches bush structure and connector

Info

Publication number: CN210245837U
Application number: CN201921616684.2U
Authority: CN
Inventors: Chenliang Gu; 顾晨亮
Original assignee: Zhuzhou National Engineering Research Center of Converters Co Ltd
Current assignee: Zhuzhou National Engineering Research Center of Converters Co Ltd
Priority date: 2019-09-26
Filing date: 2019-09-26
Publication date: 2020-04-03
Anticipated expiration: 2029-09-26

Abstract

The utility model discloses a tail attached bushing structure, which comprises an outer bushing and an inner bushing, wherein the outer bushing and the inner bushing are both hollow cylinders, one end of each of the outer bushing and the inner bushing is provided with an outer edge, and the outer edge of the inner bushing extends towards the other end of the outer bushing to form an outer flange; the inner bushing is sleeved inside the outer bushing, and the inner wall of the outer flange of the inner bushing is attached to the end face of the outer edge of the outer bushing; an annular space with one closed end and used for installing the wave-proof sleeve is formed between the outer bushing and the inner bushing. The utility model also discloses a connector, include as above the tail attach the bush structure. The utility model discloses a tail attaches bush structure and connector all has simple structure, assembles advantages such as simple and convenient, connection is reliable.

Description

Tail attaches bush structure and connector

Technical Field

The utility model relates to a power equipment technical field refers in particular to a tail attaches bush structure and connector.

Background

Conventional electrical connectors now employ a shielded tail attachment, as shown in fig. 1, for securing the cable, protecting the wires 7 and protecting the contact terminations from damage and enhancing partial electromagnetic shielding. The shield tail additionally comprises a shield nut and an inner bushing and an outer bushing. As shown in figure 2, the inner and outer bushings are both cylindrical shoulder type, the diameter of the cylinder of the outer bushing 1 is slightly wider than that of the cylinder of the inner bushing, the shoulder of the outer bushing 1 is slightly narrower than that of the inner bushing, and the edges of the shoulders of the two bushings are consistent, so that an annular cavity is formed between the inner bushing and the outer bushing.

For such tail attachment configurations, the breakwater boot 8 is typically electrically connected by welding to the inner and outer liners of the tail attachment. During welding, the outer bushing 1 and the inner bushing are matched to clamp the tail end of the wave-proof sleeve 8, so that burrs are exposed from the tail end of the wave-proof sleeve 8 only at the joint of the inner bushing and the outer bushing 1; trimming burrs of the wave-proof sleeve 8 between the inner bushing and the outer bushing; welding the welding surfaces of the joints of the inner lining, the outer lining and the wave-proof sleeve 8, and finally filing the welding surfaces to be smooth so that the wave-proof sleeve 8 is tightly matched with the connector shell. The wave-proof sleeve 8 and the tail of the electric connector form a radial 360-degree connection.

There are several other termination methods in addition. Some anti-wave sleeves 8 are fixed between the inner lining and the outer lining by adopting a rolling technology, so that the anti-wave sleeves 8 are tightly matched with the connector shell, and the termination reliability is improved. Some electric connectors are designed with special tail attachments according to product requirements, and the wave-proof sleeve 8 and the tail attachments are fixed by steel ribbons. Some tails are provided with a pressing mechanism to fix the shielding net in the shell of the tail accessory. And a memory ring is also adopted, the memory ring is sleeved on the wave-proof sleeve 8, and the memory ring is heated by a special tool to generate radial contraction, so that the wave-proof sleeve 8 is fixed along the tail attachment circumference by 360 degrees. These termination methods all enable the reliable connection of the anti-wave sleeve 8 and the connector tail, but have the problems of more operation procedures, low working efficiency, complex tail structure or incapability of being suitable for local high-temperature environment, etc.

The connector for electrical connection with an engine accessory is used for transmitting various sensor signals, control signals and power signals, and the using environment of the connector has the characteristics of high temperature and high vibration strength. Considering that the local high temperature transmitted when the engine works can cause the welding surface at the joint of the lining and the wave-proof sleeve 8 to be unwelded, therefore, in the production practice, the wave-proof sleeve 8 is fixed between the inner lining and the outer lining, and the inner lining and the outer lining are oppositely pressed; trimming burrs at the tail ends of the wave-proof sleeves 8 exposed at the shoulders of the two bushings; and then the shielding nut is screwed down for termination. However, during repair or life extension, the cable is disassembled, tested, repaired, and assembled many times. The tail attachment structure of this type of connector and its manner of termination with the boot 8 may cause the following problems when doing so:

(1) the operator can not assemble properly, and the burrs at the tail ends of the wave-proof sleeves 8 clamped at the shoulders of the inner and outer bushings are not trimmed neatly, namely, the shielding screw cap is screwed up roughly. The end face burrs which are not trimmed can be clamped on the threads of the shielding nut, so that the shielding nut and the lining cannot be tightly attached, and the burrs are easy to wear and tear the shielding nut under the strong vibration condition, so that potential hidden dangers are caused.

(2) The fastening effect of the end of the annular cavity between the inner lining and the outer lining to the wave-proof sleeve 8 is insufficient, and under the condition of strong vibration, the wave-proof sleeve 8 is easy to loosen, so that the attachment of the wave-proof sleeve and the tail is unreliable.

(3) Because the tail end of the inner bushing is circular, when the inner bushing is sleeved into the wave-proof bushing 8, the metal wires on the end face of the wave-proof bushing 8 can escape from the inner hole wall of the inner bushing cylinder, and if the metal wires cannot be detected and processed in time, the escaping metal wires can stab the insulating layer of the lead 7, so that short circuit or reduction of the insulating resistance is caused.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in: to the technical problem that prior art exists, the utility model provides a simple structure, the assembly is simple and convenient, connect reliable tail and attach bush structure and connector.

In order to solve the technical problem, the utility model provides a technical scheme does:

a tail-attached bushing structure comprises an outer bushing and an inner bushing, wherein the outer bushing and the inner bushing are both hollow cylinders, one end of each outer bushing is provided with an outer edge, and the outer edge of the inner bushing extends towards the other end of the outer bushing to form an outer flange; the inner bushing is sleeved inside the outer bushing, and the inner wall of the outer flange of the inner bushing is attached to the end face of the outer edge of the outer bushing; an annular space with one closed end and used for installing the wave-proof sleeve is formed between the outer bushing and the inner bushing.

As a further improvement of the above technical solution:

the other end of the inner lining is in a necking shape which shrinks towards the middle of the inner lining.

The other end of the inner bushing is a conical head.

The other end of the outer lining is in a necking shape which shrinks towards the middle of the outer lining.

The other end of the outer bushing is a conical head, and the conical head of the outer bushing and the conical head of the inner bushing are coaxially arranged.

The length of the outer flange of the inner bushing is larger than the sum of the thickness of the outer edge of the outer bushing and the thickness of the wave-proof sleeve.

Still include the shielding nut, the shielding nut cover is located the outside of outer liner.

The utility model also discloses a connector, include as above the tail attach the bush structure.

Compared with the prior art, the utility model has the advantages of:

the utility model discloses a tail attaches bush structure, the other end through outside along the limit outside the bush outside including the bush is buckled and is extended the back and form the outward flange to make the installation prevent that ripples overlaps the annular space's one end seals, need not including the centre gripping, between the outer bush prevent ripples cover terminal surface burr trim neat, shielding nut and bush homoenergetic closely laminate, and do not have the condition of preventing the end wire wearing and tearing shielding nut of ripples cover among the strong vibration process, improve life.

The utility model discloses a tail attaches bush structure, the other end of neck bush is the throat form of shrinking to the middle of the neck bush, specifically is the cone, and when assembling, the cone is convenient for extrude wave prevention cover terminal surface wire to the annular space, avoids wave prevention cover terminal surface wire to escape to the intermediate hole of neck bush, avoids the wire insulating layer to damage; furthermore, the conical head of the outer bushing and the conical head of the inner bushing are coaxially arranged, the wave-proof sleeve is uniformly compressed through the mutual matching between the conical heads of the outer bushing and the inner bushing, and the wave-proof sleeve is not easy to loosen under the strong vibration condition.

The utility model discloses a tail attaches bush structure, overall structure is simple, the assembly is simple and convenient and need not prune the terminal surface burr of wave proof cover to improve assembly efficiency by a wide margin, it is reliable to connect with wave proof cover moreover.

Drawings

Fig. 1 is a schematic structural diagram of a connector in the prior art.

Fig. 2 is a schematic structural diagram of a tail-attached bushing structure in the prior art.

Fig. 3 is a schematic structural view of the tail bushing structure according to the embodiment of the present invention.

Fig. 4 is a schematic structural diagram of a connector according to an embodiment of the present invention.

The reference numbers in the figures denote: 1. an outer liner; 2. an inner liner; 3. an outer edge; 4. an outer flange; 5. a conical head; 6. a shielding nut; 7. a wire; 8. wave-proof sleeve.

Detailed Description

The invention is further described with reference to the drawings and the specific embodiments.

As shown in fig. 3, the tail bushing structure of the present embodiment includes an outer bushing 1, an inner bushing 2 and a shielding nut 6, wherein the shielding nut 6 is sleeved outside the outer bushing 1; the outer bushing 1 and the inner bushing 2 are both hollow cylinders, one end of each hollow cylinder is provided with an outer edge 3, and the outer edge 3 of the inner bushing 2 bends and extends towards the other end of the outer bushing 1 to form an outer flange 4; the inner bushing 2 is sleeved inside the outer bushing 1, the inner wall of the outer flange 4 of the inner bushing 2 is attached to the end face of the outer edge 3 of the outer bushing 1, and the outer edge 3 of the outer bushing 1 is located in a space formed by the outer flange 4 and the outer edge 3 of the inner bushing 2; an annular space which is closed at one end and is used for installing the wave-proof sleeve 8 is formed between the outer sleeve 1 and the inner sleeve 2.

The utility model discloses a tail attaches bush structure, the other end through including 2 outside along 3 outside bushings of inner liner 2 forms outward flange 4 after buckling and extending to the outer bush 1 to make the installation prevent that ripples cover 8's annular space's one end is sealed, need not including the centre gripping, between the outer bush prevent ripples cover 8 terminal surface burr prune neatly, shielding nut 6 closely laminates with the bush homoenergetic, and does not have the end wire wearing and tearing shielding nut 6's of preventing ripples cover 8 the condition at the strong in-process that shakes, thereby improves life.

In this embodiment, the other end of the inner liner 2 is in the shape of a tapered end 5 that tapers toward the middle of the inner liner 2. When the anti-wave sleeve is assembled, the conical head 5 is convenient for extruding the metal wire on the end face of the anti-wave sleeve 8 into the annular space, so that the metal wire on the end face of the anti-wave sleeve 8 is prevented from escaping to the middle hole of the inner lining 2, and the insulating layer of the lead 7 is prevented from being damaged. Of course, in other embodiments, the other end of the inner liner 2 may take other inwardly-tapered shapes. In addition, the other end of the outer bushing 1 is in a necking shape which shrinks towards the middle of the outer bushing 1, specifically, the conical head 5 is also a conical head 5, the conical head 5 of the outer bushing 1 and the conical head 5 of the inner bushing 2 are coaxially arranged, the wave-proof sleeve 8 is uniformly compressed through the mutual matching between the conical heads 5 between the outer bushing 1 and the inner bushing 2, and the wave-proof sleeve 8 is not easy to loosen under the strong vibration condition.

In this embodiment, the length of the outer flange 4 of the inner liner 2 is greater than the sum of the thicknesses of the outer rim 3 of the outer liner 1 and the bellows-proof sleeve 8, so that the outer rim 3 of the outer liner 1 and the end surface of the bellows-proof sleeve 8 are both located in the space formed by the outer flange 4 and the outer rim 3 of the inner liner 2. In addition, the outer rim 3 and outer flange 4 of the inner liner 2 have a thickness corresponding to the cylindrical thickness of the outer liner 1.

During assembly, firstly, the wave-proof sleeve 8 is plugged into the outer lining 1, so that the wave-proof sleeve can uniformly cover the outer edge 3 of the outer lining 1 by 360 degrees; secondly, inserting the inner bushing 2 into the wave-proof sleeve 8 from the conical head 5 end, and opening the tail end of the wave-proof sleeve 8; then the inner bushing and the outer bushing are pressed in opposite directions, the tail end of the wave-proof sleeve 8 is clamped in a closed space between the two bushings, and the two conical heads 5 at the cylindrical tail parts of the inner bushing and the outer bushing tightly fix the wave-proof sleeve 8; and finally, screwing the shielding nut 6 to realize reliable connection with the wave-proof sleeve 8.

The utility model discloses a tail attaches bush structure, overall structure is simple, the assembly is simple and convenient and need not prune the terminal surface burr of wave preventing cover 8 to improve assembly efficiency by a wide margin.

As shown in fig. 4, the present invention also discloses a connector, which comprises the above-mentioned tail-attached bushing structure, and also has the advantages of the above-mentioned tail-attached bushing structure.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention. The technical solution of the present invention can be used by anyone skilled in the art to make many possible variations and modifications, or to modify equivalent embodiments, without departing from the scope of the technical solution of the present invention, using the technical content disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments by the technical entity of the present invention should fall within the protection scope of the technical solution of the present invention.

Claims

1. The tail-attached bushing structure is characterized by comprising an outer bushing (1) and an inner bushing (2), wherein the outer bushing (1) and the inner bushing (2) are both hollow cylinders, an outer edge (3) is arranged at one end of each hollow cylinder, and the outer edge (3) of the inner bushing (2) extends towards the other end of the outer bushing (1) to form an outer flange (4); the inner bushing (2) is sleeved inside the outer bushing (1), and the inner wall of the outer flange (4) of the inner bushing (2) is attached to the end face of the outer edge (3) of the outer bushing (1); an annular space with one closed end and used for installing the wave-proof sleeve (8) is formed between the outer sleeve (1) and the inner sleeve (2).

2. The tail bushing structure according to claim 1, characterized in that the other end of the inner bushing (2) is in the shape of a throat that converges towards the middle of the inner bushing (2).

3. The tail bushing structure according to claim 2, characterized in that the other end of the inner bushing (2) is a conical head (5).

4. The tail bushing structure according to claim 3, characterized in that the other end of the outer bushing (1) is in the shape of a constriction converging towards the middle of the outer bushing (1).

5. The tail bushing structure according to claim 4, characterized in that the other end of the outer bushing (1) is a conical head (5), the conical head (5) of the outer bushing (1) being arranged coaxially with the conical head (5) of the inner bushing (2).

6. The tail liner structure according to any one of claims 1 to 5, characterized in that the length of the outer flange (4) of the inner liner (2) is greater than the sum of the thicknesses of the outer rim (3) of the outer liner (1) and the wave breaker (8).

7. The tail attached bushing structure of any one of claims 1 to 5, further comprising a shielding nut (6), wherein the shielding nut (6) is sleeved outside the outer bushing (1).

8. A connector comprising a trailing bushing structure according to any one of claims 1 to 7.