CN217485172U

CN217485172U - Direct insertion type terminal sheath

Info

Publication number: CN217485172U
Application number: CN202221715359.3U
Authority: CN
Inventors: 钱柯澄
Original assignee: Wenzhou Hongxin Electromechanical Technology Co ltd
Current assignee: Wenzhou Hongxin Electromechanical Technology Co ltd
Priority date: 2022-06-29
Filing date: 2022-06-29
Publication date: 2022-09-23
Anticipated expiration: 2032-06-29

Abstract

The utility model discloses a direct plug-in terminal sheath, which comprises a terminal sleeve and a threading sleeve which are connected into a whole, wherein the inner diameter of the terminal sleeve is gradually reduced from a limit end to one side of an opening end, so that the terminal sleeve has good wrapping effect on a wiring harness terminal after natural shrinkage, a circular ring bulge is formed on the peripheral side wall of the threading sleeve, the circular ring bulge is provided with a limit cavity which is formed around the inner wall of the threading sleeve and has an inner diameter larger than that of the threading sleeve, just in time, a lock catch part of the wiring harness terminal is clamped in the limit cavity, the direct plug-in terminal sheath with the structural design plays a plurality of limit installation roles on the wiring harness terminal through the limit end of the terminal sleeve and the limit cavity of the circular ring bulge, the tensile strength of the wiring harness terminal in the terminal sheath is improved, the drawing force strength which can be born by the direct plug-in terminal sheath can be more than twice of the traditional sheath, and the installation stability is good, the insulating protection effect is good, promotes the life and the performance of product.

Description

Direct insertion type terminal sheath

Technical Field

The utility model relates to a sheath technical field, concretely relates to formula terminal sheath cut straightly.

Background

In the electrical industry, many connection terminals are special in use environment, and an insulating sheath is sleeved outside the connection terminals in general for ensuring the electrical safety of products, and the sheaths are various in types such as soft PVC, PA66, silicon rubber and the like. Due to the protection of the sheath, the connecting terminal is prevented from being exposed outside, and the electric insulation property of the connecting terminal during electric connection can be effectively guaranteed.

The terminal sheath for the wire harness terminal is available on the market, and mainly comprises a cylindrical wire sleeve part and a cylindrical sheath part, the wire harness terminal is assembled between the wire sleeve part and the sheath part in a direct-insertion mode, a neck part in smooth transition is arranged at a connecting position between the wire sleeve part and the sheath part, the diameter of the wire sleeve part is smaller than that of the sheath part, a clamping groove matched with a connecting terminal is formed in the position of the neck part, the depth of the clamping groove on the neck part is generally shallow, and the limiting strength of the wire harness terminal is not strong. In actual use, the existing terminal sheath can bear insufficient drawing force of the wire harness terminal, the slipping phenomenon of the terminal in the terminal sheath can be easily caused when the terminal sheath is subjected to 30N left and right pulling force, the installation stability is poor, and the protection effect is poor.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model discloses the technical problem that solves lies in overcoming the terminal sheath among the prior art and is not strong to the limiting displacement of pencil terminal, and the drawing force that can bear the pencil terminal is also big inadequately, the not good problem of protecting effect to a tensile strength who promotes the pencil terminal is provided, and installation stability is good, and insulating protecting effect is good, promotes the life of product and the straight formula terminal sheath of performance.

In order to solve the technical problem, the utility model provides a direct-insert terminal sheath, which comprises a terminal sleeve and a threading sleeve which are connected integrally, wherein the terminal sleeve comprises a limiting end communicated with one end of the threading sleeve and an opening end arranged back to the threading sleeve, and the inner diameter of the terminal sleeve is gradually reduced from the limiting end to one side of the opening end; the threading sleeve extends along the axial direction of the terminal sleeve to form a cylindrical shape, and the inner diameter of the threading sleeve is smaller than that of the terminal sleeve; the utility model discloses a threading sleeve pipe, including threading sleeve pipe, the shaping has the ring arch on the sheathed tube periphery lateral wall of threading, the ring arch has and encircles the internal diameter that the sheathed tube inner wall of threading formed is greater than the spacing chamber of threading sleeve pipe internal diameter.

As a preferable scheme, the terminal sleeve is in a circular truncated cone shape.

Preferably, the cross-sectional inner diameter of the limiting cavity is larger than that of the opening end and smaller than that of the limiting end.

Preferably, the cross-sectional inner diameter of the limiting cavity is 2 times larger than that of the threading sleeve.

As a preferable scheme, the distance from the bottom of the limiting cavity to the depth of the inner wall of the threading sleeve is 2-2.5 mm.

As a preferable scheme, an inner port axially opposite to the opening end is formed between one end of the threading sleeve and the limiting end, and the limiting end comprises a first limiting wall arranged around the inner port.

Preferably, the first limiting wall has a section of a conical surface structure, and the inner diameter of the section of the first limiting wall gradually decreases from the limiting end to the inner port side.

As a preferable scheme, the threading sleeve comprises a head end part and a tail end part which are respectively arranged at two sides of the circular ring bulge, and two second limiting walls which are obliquely connected with the head end part and the tail end part are arranged at two sides of the limiting cavity.

Preferably, the terminal sleeve and the threading sleeve are integrally injection-molded by using a PVC or silicone rubber material.

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

1. the utility model provides a formula terminal sheath that cut straightly, through having the ring arch on the threading sleeve pipe shaping, this ring arch has the spacing chamber that forms around the threading sleeve pipe inner wall, during the installation, insert the pencil terminal between terminal sleeve pipe and threading sleeve pipe, can restrict the body part that holds the pencil terminal through the terminal sleeve pipe, according to the internal diameter of terminal sleeve pipe from spacing end to open end one side dwindling gradually, design makes the terminal sleeve pipe good to the parcel effect of pencil terminal after the natural shrink, can effectively restrict the pencil terminal and roll out from the open end, then wear out the wire part of pencil terminal along the threading sleeve pipe, make the hasp part of pencil terminal tail end just in time block in spacing chamber simultaneously, the degree of depth in this spacing chamber can be done deeply according to the protruding height correspondence of ring arch, in order to strengthen the limiting displacement to the hasp part, the direct-insert terminal sheath designed by the technical scheme plays a plurality of limiting installation roles on the wiring harness terminal through the limiting end of the terminal sleeve and the limiting cavity of the circular ring, so that the tensile strength of the wiring harness terminal in the terminal sheath is improved, the drawing force strength borne by the direct-insert terminal sheath can be more than two times of that of a traditional sheath, the installation stability is good, a good insulation protection effect is achieved, and the service life and the service performance of a product are improved.

2. The utility model provides a formula terminal sheath cut straightly, the cross-section internal diameter in spacing chamber is greater than 2 times of threading sheathed tube cross-section internal diameter, and spacing chamber bottom is 2-2.5mm apart from the degree of depth to threading cover intraductal wall, be the loop configuration setting according to spacing chamber, the installation requirement of the hasp part that this spacing chamber of degree of depth design can better satisfy the pencil terminal, make hasp part card support form spacing cooperation in spacing chamber, increase installation depth of contact, thereby increase the installation intensity of pencil terminal in spacing chamber position, guarantee that the pencil terminal also is difficult for taking place the pine and takes off the phenomenon when receiving external force and dragging, the installation is reliable and stable.

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

Fig. 1 is a schematic perspective view of a direct-insert terminal sheath provided by the present invention;

fig. 2 is a schematic plan view of the direct-insert terminal sheath provided by the present invention;

fig. 3 is a schematic cross-sectional view of the in-line terminal boot of fig. 2 taken along line a-a;

description of the reference numerals: 1. a terminal bushing; 11. a limiting end; 12. an open end; 13. an inner port; 2. threading a sleeve; 21. a head end portion; 22. a tail end portion; 3. the circular ring is convex; 4. a limiting cavity; 5. a first limiting wall; 6. a second limiting wall.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "first", "second" and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1

The present embodiment is described in detail below with reference to the accompanying drawings:

the embodiment provides an in-line terminal sheath as shown in fig. 1 to 3, which includes a terminal sleeve 1 and a threading sleeve 2 connected integrally, where the terminal sleeve 1 includes a limiting end 11 communicated with one end of the threading sleeve 2, and an open end 12 arranged opposite to the threading sleeve 2, and an inner diameter of the terminal sleeve 1 is gradually reduced from the limiting end 11 to one side of the open end 12; the threading sleeve 2 extends along the axial direction of the terminal sleeve 1 to form a cylindrical shape, and the inner diameter of the threading sleeve is smaller than that of the terminal sleeve 1; the periphery lateral wall of threading sleeve pipe 2 goes up the shaping and has the ring arch 3, ring arch 3 has the ring and encircles the internal diameter that 2 inner walls of threading sleeve pipes formed is greater than spacing chamber 4 of 2 internal diameters of threading sleeve pipes.

The above embodiment is the core technical solution of this embodiment, the direct-insert terminal sheath is composed of a terminal sleeve 1 and a threading sleeve 2, and a circular protrusion 3 is formed on the threading sleeve 2, the circular protrusion 3 has a limit cavity 4 formed around the inner wall of the threading sleeve 2, when installing, the wiring harness terminal is inserted between the terminal sleeve 1 and the threading sleeve 2, the body part for accommodating the wiring harness terminal can be limited by the terminal sleeve 1, according to the fact that the inner diameter of the terminal sleeve 1 is gradually reduced from the limit end 11 to the open end 12 side, the design makes the terminal sleeve 1 have good effect of wrapping the wiring harness terminal after natural shrinkage, can effectively limit the wiring harness terminal from sliding out from the open end 12, then the wire part of the wiring harness terminal penetrates out along the threading sleeve 2, and simultaneously makes the lock part at the tail end of the wiring harness terminal just block in the limit cavity 4, this degree of depth of spacing chamber 4 can be according to protruding the highly corresponding deeper of being done of the protruding 3 of ring, with the limiting displacement of reinforcing to the hasp part, adopt the formula terminal sheath that cut straightly of this technical scheme design, spacing end 11 through terminal sleeve 1 and the protruding 3 spacing chamber 4 of ring play the spacing mounting effect in many places to the pencil terminal, thereby promote the tensile strength of pencil terminal in the terminal sheath, make the drawing force intensity that cut straightly the formula terminal sheath and can bear accomplish more than the twice of traditional sheath, installation stability is good, and has fine insulating protective effect, the life and the performance of promotion product.

As a specific structure setting, the cross-sectional inner diameter of the limiting cavity 4 is greater than the cross-sectional inner diameter of the open end 12 and smaller than the cross-sectional inner diameter of the limiting end 11, the terminal sleeve 1 is in a circular truncated cone shape, after the wiring harness terminal is inserted from the open end, the flat open end 12 can be stressed to be opened so that the wiring harness terminal can pass through, when the main body part of the wiring harness terminal is completely installed in the open end 12, the main body part of the wiring harness terminal can be abutted by the limiting end 11, at this time, the open end 12 can be naturally contracted to wrap the wiring harness terminal in the terminal sleeve, and the inner diameter of the terminal sleeve 1 is made to be minimum at the open end position, so that the anti-slip and anti-backing effects are facilitated.

Further preferably, as shown in fig. 3, the inner diameter of the cross section of the limiting cavity 4 is greater than 2 times of the inner diameter of the cross section of the threading sleeve 2, the inner diameter of the cross section of the limiting cavity 4 is 5.3mm, the limiting cavity 4 is arranged in an annular structure, the height of the annular protrusion 3 on the outer wall of the threading sleeve 2 is designed to be high, so that the depth of the limiting cavity 4 can be deeper, and the depth from the bottom of the limiting cavity 4 to the inner wall of the threading sleeve 2 is 2-2.5mm, and particularly preferably 2.2 mm. The installation requirement of the lock catch part of the wire harness terminal can be well met by the aid of the limiting cavity 4 designed in depth, the lock catch part is clamped and supported in the limiting cavity to form limiting fit, installation contact depth is increased, accordingly, the wire harness terminal is increased, installation strength of the position of the limiting cavity 4 is guaranteed, the wire harness terminal is not prone to loosening when pulled by external force, and installation is stable and reliable.

In order to improve the limiting effect of the terminal sheath on the wire harness terminal inside the terminal sheath, as shown in fig. 2-3, an inner port 13 axially opposite to the open end 12 is formed between one end of the threading sleeve 2 and the limiting end 11, the limiting end 11 comprises a first limiting wall 5 arranged around the inner port 13, the cross section of the first limiting wall 5 is in a conical surface structure, the inner diameter of the cross section of the first limiting wall is gradually reduced from the limiting end 11 to one side of the inner port 13, and in this structure, when the main body part of the wire harness terminal is inserted into the limiting end 11, the main body part of the wire harness terminal is matched and abutted against the first limiting wall 5, and the wire and the lock catch part of the wire harness terminal can be led to penetrate into the threading sleeve 2 through the inner port through the first limiting wall 5.

As shown in fig. 2, the threading sleeve 2 includes a head portion 21 and a tail portion 22 respectively disposed at two sides of the circular ring protrusion 3, two second limiting walls 6 obliquely connected to the head portion 21 and the tail portion 22 are disposed at two sides of the limiting cavity 4, the length of the head portion 21 is smaller than that of the tail portion 22, and the first limiting wall 5 is connected between the first limiting wall 5 and the circular ring protrusion 3, so as to be just suitable for the connection distance that the locking part of the harness terminal passes through the inner port 13 and is inserted into the limiting cavity 4, so that the locking part of the harness terminal is blocked by the two second limiting walls 6 after being clamped into the limiting cavity, and the first limiting wall 5 on the terminal sleeve has a limiting effect on the harness terminal to prevent the harness from slipping when the wire part of the harness terminal is pulled by an external force, thereby enhancing the tensile strength of the terminal, the installation is stable and reliable.

In this embodiment, terminal sleeve 1 and threading sleeve 2 are by the integrative injection moulding of PVC or silicon rubber material, and integral type structural stability is good, and the flag-shaped terminal sheath that this kind of PVC or silicon rubber material was made has good fire-retardant and insulating properties to and pliability and wearability are good, long service life.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims

1. A direct-insert terminal sheath comprises a terminal sleeve (1) and a threading sleeve (2) which are connected integrally, and is characterized in that the terminal sleeve (1) comprises a limiting end (11) communicated with one end of the threading sleeve (2) and an opening end (12) arranged back to the threading sleeve (2), and the inner diameter of the terminal sleeve (1) is gradually reduced from the limiting end (11) to one side of the opening end (12); the threading sleeve (2) extends along the axial direction of the terminal sleeve (1) to form a cylindrical shape, and the inner diameter of the threading sleeve is smaller than that of the terminal sleeve (1); the shaping has ring arch (3) on the periphery lateral wall of threading sleeve pipe (2), ring arch (3) have encircle the internal diameter that threading sleeve pipe (2) inner wall formed is greater than spacing chamber (4) of threading sleeve pipe (2) internal diameter.

2. An in-line terminal boot as defined in claim 1, wherein: the terminal sleeve (1) is in a circular truncated cone shape.

3. An in-line terminal boot as defined in claim 2, wherein: the inner diameter of the cross section of the limiting cavity (4) is larger than that of the opening end (12) and smaller than that of the limiting end (11).

4. An in-line terminal boot according to claim 3, wherein: the inner diameter of the cross section of the limiting cavity (4) is 2 times larger than that of the cross section of the threading sleeve (2).

5. An in-line terminal boot according to claim 4, wherein: the distance from the bottom of the limiting cavity (4) to the depth of the inner wall of the threading sleeve (2) is 2-2.5 mm.

6. An in-line terminal boot according to any of claims 1-5, wherein: an inner port (13) axially opposite to the opening end (12) is formed between one end of the threading sleeve (2) and the limiting end (11), and the limiting end (11) comprises a first limiting wall (5) surrounding the inner port (13).

7. An in-line terminal boot as defined in claim 6, wherein: the section of the first limiting wall (5) is of a conical surface structure, and the inner diameter of the section of the first limiting wall is gradually reduced from the limiting end (11) to one side of the inner port (13).

8. An in-line terminal boot as defined in claim 7, wherein: threading sleeve pipe (2) are including establishing separately head portion (21) and tail end (22) of ring arch (3) both sides, the both sides of spacing chamber (4) are provided with the slope and connect two spacing walls (6) of second of head portion (21) and tail end (22).

9. An in-line terminal boot as defined in claim 1, wherein: the terminal sleeve (1) and the threading sleeve (2) are integrally formed by injection molding of PVC or silicon rubber.