Pre-insulated terminal

Abstract

The utility model relates to a pre-insulated terminal. A pre-insulation terminal comprises a conductive terminal and an insulation protective sleeve, the insulation protective sleeve comprises a wire inlet segment and a connecting segment, the wire inlet segment and the connecting segment are respectively provided with a wire inlet groove and a connecting groove, the conductive terminal is provided with a fixing segment extending into the connecting groove, the groove bottom of the connecting groove of the connecting segment is provided with a matching groove with an annular cross section, and the matching groove is provided with a wire inlet groove and a wire outlet groove. A matching groove is formed in the fixing section, the width of the matching groove is gradually reduced from the opening to the groove bottom, a matching part matched with the matching groove is arranged between the end parts of the fixing section, the matching part is annular, the circumferential inner wall and the circumferential outer wall of the matching part are subjected to chamfering treatment, and a receding groove with an opening in the mounting direction is formed between the circumferential inner sides of the matching part of the fixing section. The electric connector has the advantages that the stability of connection and positioning between the conductive terminal and the insulating protective sleeve is better, and the possibility of separation between the insulating protective sleeve and the conductive terminal can be reduced when the electric connector is deformed during use.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of pre-insulated terminals. BACKGROUND

[0002] The Chinese patent with the application number CN202322019142. X discloses a pre-insulated terminal, which comprises a material belt, an insulation protective sleeve integrally formed on the material belt, and a conductive terminal arranged at one end of the insulation protective sleeve. A sawtooth is arranged on the inner wall of the insulation protective sleeve. The sawtooth is arranged in a circumferential ring on the inner wall of the insulation protective sleeve, and the sawtooth is coaxially arranged with the insulation protective sleeve. The above-mentioned scheme uses the sawtooth to improve the positioning and fixation of the conductive terminal, making the conductive terminal more stable and firmly positioned on the insulation protective sleeve.

[0003] When the conductive terminal and the insulation protective sleeve are compressed, the sawtooth exists, and the hardness of the insulation protective sleeve and the conductive terminal is not very high. Therefore, it is difficult for the conductive terminal to be coaxially compressed into the insulation protective sleeve. The axial end face of the conductive terminal is difficult to effectively contact the inner wall of the insulation protective sleeve. There is still poor stability in connection and positioning. If deformation occurs during use, the conductive terminal and the insulation protective sleeve may move apart. SUMMARY

[0004] The utility model aims to provide a pre-insulated terminal with better connection and positioning stability, which can reduce the possibility of separation between the insulation protective sleeve and the conductive terminal during deformation.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a pre-insulated terminal includes a conductive terminal and an insulation protective sleeve. The insulation protective sleeve includes a wire inlet section and a connecting section. The wire inlet section and the connecting section are respectively provided with a wire inlet groove and a connecting groove. The conductive terminal has a fixed section that extends into the connecting groove. The connecting groove of the connecting section is provided with a matching groove with a circular cross-section. The width of the matching groove gradually decreases from the opening to the groove bottom. The fixed section has a matching part that cooperates with the matching groove. The matching part is circular. The circumferential inner wall and the circumferential outer wall of the matching part are chamfered. The circumferential inner side of the matching part of the fixed section is provided with a clearance groove that is open in the installation direction.

[0006] The conductive terminal end of the pre-insulated terminal is not only outwardly chamfered, but also inwardly chamfered, so that friction and resistance in the assembling process are reduced, the conductive terminal is more easily inserted into the insulating protective sleeve, and the conductive terminal of the conductive terminal with the lead wire fixed is pressed and assembled; when the conductive terminal and the insulating protective sleeve are pressed and assembled, since the conductive terminal end is chamfered, and the width of the matching groove gradually decreases from the opening to the groove bottom, the circumferential groove wall of the matching groove is in contact with the circumferential surface of the fixed segment matching part, so that the contact area of the conductive terminal and the insulating protective sleeve is increased, the positioning effect of the conductive terminal and the insulating protective sleeve is ensured, and then the structural stability is improved during subsequent use, so that when the insulating protective sleeve is deformed, the conductive terminal and the insulating protective sleeve can still maintain a good matching relationship, the possibility of separation of the two is reduced, and the stability of the terminal under complex working conditions is enhanced.

[0007] Preferably, the outer wall of the fixed segment and the groove wall of the connecting groove are provided with limiting structures matched with each other, the limiting structures include limiting protrusions or / and limiting grooves on the outer wall of the fixed segment and the groove wall of the connecting groove, and the extending directions of the limiting protrusions are perpendicular to the mounting direction of the conductive terminal.

[0008] Preferably, the limiting protrusions include a plurality of limiting protrusion monomers arranged side by side and at intervals.

[0009] Preferably, the limiting protrusions have oppositely arranged guide surfaces, and an included angle is formed between the two guide surfaces.

[0010] Preferably, the outer wall of the fixed segment and the groove wall of the connecting groove are provided with at least three limiting structures arranged at intervals along the mounting direction. The arrangement of the plurality of limiting structures can still play a limiting role even if one or more limiting structures are damaged or fail, so that the reliability and service life of the entire pre-insulated terminal are greatly improved. At the same time, there is a certain distance between the limiting structures, so as to avoid large resistance in some places during pressing and assembling, and facilitate the pressing and assembling between the conductive terminal and the insulating protective sleeve.

[0011] The conductive terminal and the insulating protective sleeve have better connection and positioning stability, and the possibility of separation of the insulating protective sleeve and the conductive terminal can be reduced when deformed. Attached Figure Description

[0012] Fig. 1 This is a cross-sectional view of the device of this utility model.

[0013] Fig. 2 This is a schematic diagram of the structure of the conductive terminal of the device of this utility model.

[0014] Fig. 3 This is a cross-sectional view of the insulating protective sleeve of the device of this utility model. Detailed Implementation

[0015] The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

[0016] Depend on Figs. 1 to 3 As shown, this embodiment discloses a pre-insulated terminal, including a strip 1 and a plurality of pre-insulated terminals arranged side by side. Each pre-insulated terminal includes an insulating protective sleeve 2 integrally formed on the strip 1 and a conductive terminal 3 with one end pressed into the insulating protective sleeve 2. The insulating protective sleeve 2 includes an inlet section 21 and a connecting section 22. The inlet section 21 and the connecting section 22 are respectively provided with an inlet groove 210 and a connecting groove 220. The inlet groove 210 and the connecting groove 220 are connected. The conductive terminal 3 has a fixing section 31 that extends into the connecting groove 220.

[0017] The bottom of the connecting groove 220 of the connecting section 22 is provided with a mating groove 221 with an annular cross section. The width of the mating groove 221 gradually decreases from the opening to the bottom of the groove. The ends of the fixing section 31 of the conductive terminal 3 have a mating part 310 that mates with the mating groove 221. The mating part 310 has an annular cross section. Both the inner and outer walls of the mating part 310 are chamfered. The mating part 310 of the fixing section 31 has a clearance groove 311 that opens in the installation direction between the inner sides of the mating part 310.

[0018] In this embodiment, the outer wall of the fixing section 31 of the conductive terminal 3 and the wall of the connecting groove 220 are provided with a mutually cooperating limiting structure. The limiting structure includes a limiting protrusion, which includes a first limiting protrusion 32 that protrudes outward in a circumferential direction on the outer wall of the fixing section 31 and a second limiting protrusion 23 that protrudes inward in a circumferential direction on the inner wall of the connecting groove 220. The extending directions of the first limiting protrusion 32 and the second limiting protrusion 23 are both perpendicular to the installation direction of the conductive terminal 3.

[0019] The outer wall of the fixed section 31 and the groove wall of the connecting groove 220 are both provided with three limiting structures which are arranged at intervals along the installation direction, that is, the fixed section 31 is provided with a first limiting protrusion 32 at the middle part, near the matching part 310 and away from the matching part 310, and the groove wall of the connecting groove 220 is provided with a second limiting protrusion 23 at the middle part near the opening and the groove bottom. The first limiting protrusion 3 comprises a plurality of limiting protrusion units arranged side by side and at intervals, and the second limiting protrusion 23 has oppositely arranged guide surfaces, and the two guide surfaces form an included angle therebetween.

[0020] In order to improve the structural strength of the insulation sheath 2, a plurality of small protrusions 211 are arranged at intervals along the length direction on the circumferential side wall of the incoming line section 21, and a plurality of rows of small protrusions are arranged on the circumferential inner wall or the circumferential outer wall of the incoming line section 21.

[0021] The embodiment has the advantages that the connection and positioning stability between the conductive terminal and the insulation protective sleeve are better, and the possibility of separation of the insulation protective sleeve and the conductive terminal can be reduced when the deformation is used.

Claims

1. A pre-insulated terminal comprising a conductive terminal and an insulating protective sleeve, the insulating protective sleeve comprising a wire entry section and a connecting section, the wire entry section and the connecting section being respectively provided with a wire entry slot and a connecting slot, the conductive terminal having a fixing section extending into the connecting slot, characterized in that: The connecting groove bottom of the connecting section is provided with a matching groove with a ring-shaped cross section, the matching groove width gradually decreases from the opening to the groove bottom, the fixed section end portion has a matching portion matched with the matching groove, the matching portion is ring-shaped, the circumferential inner wall and the circumferential outer wall of the matching portion are chamfered, and the circumferential inner side of the matching portion is provided with a gap groove opened along the installation direction.

2. The pre-insulated terminal of claim 1, wherein: The fixed section outer wall and the connecting groove wall are provided with limiting structures matched with each other, the limiting structures include limiting protrusions or / and limiting grooves on the fixed section outer wall and the connecting groove wall, and the extending directions of the limiting protrusions are perpendicular to the installation direction of the conductive terminal.

3. The pre-insulated terminal of claim 2, wherein: The limiting protrusions include a plurality of limiting protrusion monomers arranged side by side and spaced apart.

4. The pre-insulated terminal of claim 2, wherein: The limiting protrusions have oppositely arranged guide surfaces, and the two guide surfaces form an included angle.

5. The pre-insulated terminal of claim 2, wherein: The fixed section outer wall and the connecting groove wall are uniformly provided with at least three limiting structures spaced apart along the installation direction.

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