CN212695421U - Connecting terminal - Google Patents
Connecting terminal Download PDFInfo
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- CN212695421U CN212695421U CN202021947438.8U CN202021947438U CN212695421U CN 212695421 U CN212695421 U CN 212695421U CN 202021947438 U CN202021947438 U CN 202021947438U CN 212695421 U CN212695421 U CN 212695421U
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Abstract
The utility model provides a wiring terminal, relating to the technical field of electrical connection devices; the lead wire comprises a lead wire, a protection tube laid outside the lead wire and a sealing body made of a deformable material; the lead comprises an exposed bare wire section, and the protection tube comprises a first tube body and a second tube body which are respectively positioned at two sides of the bare wire section; the seal sets up on bare wire section, the inner wall and the bare wire section sealing connection of seal, and the one end of seal is connected with first body, and the other end is connected with the second body. The utility model avoids the leakage of oil liquid through the connection of the sealing body and the oil-carrying electric equipment, realizes the sealing of the interior of the wiring terminal through the sealing body and the sealing connection of the lead wire, avoids the oil liquid from flowing out of the wiring terminal, and improves the sealing performance to the oil liquid; and because the seal is made by deformable material, can compensate by oneself after experiencing temperature variation, prevent that seal and lead wire from appearing the gap in the junction, further guaranteed the leakproofness.
Description
Technical Field
The utility model belongs to the technical field of the electrical connection device technique and specifically relates to a binding post is related to.
Background
At present, when internal components of an oil-immersed transformer, a power capacitor or other oil-electric equipment are electrically connected with an external structure, the internal components need to be connected through a connecting terminal, and the existing connecting terminal is generally formed by casting a copper connecting wire by using DMC (DMC) materials or pouring by using epoxy resin, or is formed by directly pouring a connecting cable together with a top cover through insulating materials such as epoxy resin and the like.
When using above-mentioned binding post to connect, in order to avoid fluid to expose through binding post, need increase sealed isotructure of filling up and seal, not only increased the complexity of cost and structure, also can't effectively seal in the binding post in addition, fluid is easy from leaking between sinle silk and line skin. In addition, because the copper wiring and the epoxy resin have different expansion coefficients, after the copper wiring and the epoxy resin are subjected to high-temperature and low-temperature changes, small cracks can be formed on the contact surface of the copper wiring and the epoxy resin, and oil is easy to leak from the wire core and the wire sheath.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a binding post to solve current binding post and need add seal ring, increased the complexity of cost and structure, and the problem of fluid seepage easily appears.
In order to solve the technical problem, the utility model provides a connecting terminal, concrete technical scheme is as follows:
a connecting terminal comprises a lead wire, a protection tube laid outside the lead wire and a sealing body made of a deformable material; the lead comprises an exposed bare wire section, and the protection tube comprises a first tube body and a second tube body which are respectively positioned at two sides of the bare wire section; the seal body is arranged on the bare wire section, the inner wall of the seal body is connected with the bare wire section in a sealing mode, one end of the seal body is connected with the first pipe body, and the other end of the seal body is connected with the second pipe body.
Furthermore, the sealing body is bonded with the bare wire section through an adhesive layer.
Further, the radial dimension of the sealing body is larger than that of the protection pipe.
Further, the sealing body comprises a connecting section, a limiting section and a sealing section which are sequentially arranged along the axial direction of the sealing body; the radial dimension of the limiting section is larger than that of the connecting section and smaller than that of the sealing section; the connecting section is connected with the first pipe body, the limiting section is in limiting fit with the to-be-electrically-connected equipment, a sealing surface is arranged on one side, close to the limiting section, of the sealing section, and the sealing surface is in sealing fit with the to-be-electrically-connected equipment.
Further, from one end far away from the sealing section to one end close to the sealing section, the radial size of the limiting section is gradually increased.
Furthermore, a first protective decorative sleeve is sleeved outside the first pipe body; and/or, the second body is provided with a second protective decorative sleeve, and the second protective decorative sleeve wraps the joint of the sealing body and the second body.
Further, the first protective decorative sleeve is made of glass fiber.
Further, the second protective decorative sleeve is a heat-shrinkable tube or a silicone tube.
Further, the sealing body is made of nitrile rubber, acrylate or oil-resistant rubber.
Furthermore, one end of the lead is connected with a first cable connector, and the other end of the lead is connected with a second cable connector.
According to the connecting terminal provided by the utility model, the sealing body can be connected with an oil-immersed transformer, a power capacitor or other oil-carrying electric equipment, so that the leakage of oil liquid is avoided, the sealing connection between the sealing body and the lead wire realizes the sealing of the interior of the connecting terminal, the oil liquid is prevented from flowing out of the connecting terminal, and the sealing performance of the oil liquid is improved; and because the seal is made by deformable material, can compensate by oneself after experiencing temperature variation, prevent that seal and lead wire from appearing the gap in the junction, further guaranteed the leakproofness.
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 structural diagram of a connection terminal provided in an embodiment of the present invention.
Icon:
1-protecting the tube; 11-a second tube;
2-sealing body; 21-a connecting segment; 22-a limiting section; 23-a sealing section; 231 — sealing surface.
3-a first protective decorative cover;
4-a second protective decorative sleeve;
5-a first cable connector;
6-second cable connector.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that 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 "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, 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.
Referring to fig. 1, the present embodiment provides a connection terminal, which includes a lead (not shown in the figure) and a protection tube 1 laid outside the lead, wherein the lead may be an existing metal conductive wire such as a copper wire, the protection tube 1 of the present embodiment may be a silicone tube made of silicone, and the protection tube 1 of the existing connection terminal covers the lead to prevent the lead from being exposed, so as to protect and decorate the lead.
Generally, when the terminal is applied to an oil-immersed transformer, a power capacitor or other oil-carrying electric equipment, a structure such as a sealing ring is required to be additionally arranged on the terminal, the sealing ring is in sealing fit with a mounting hole of the oil-immersed transformer, the power capacitor or other oil-carrying electric equipment, and the oil inside the oil-immersed transformer, the power capacitor or other oil-carrying electric equipment is prevented from leaking outside, but the structure cannot realize the sealing inside the terminal, and the oil can still flow out from a gap between the protection tube 1 and a lead wire.
And because the expansion coefficient between protection tube 1 and the lead wire is different, after experiencing temperature variation, both produce the gap, and fluid easily gets into in the binding post from the gap department to flow out oil immersed transformer, power capacitor or other oily electrical equipment outside.
Therefore, the structure of the connection terminal is improved in this embodiment, the lead of this embodiment is provided with an exposed bare wire section (not shown in the figure), that is, the lead located on the bare wire section is not wrapped by the protection tube 1, therefore, the protection tube 1 of this embodiment is divided into a first tube body (not shown in the figure) and a second tube body 11 at intervals, the first tube body is located on one side of the bare wire section, and the second tube body 11 is located on the other side of the bare wire section.
Correspondingly, this embodiment installs seal 2 on bare line segment, and seal 2 is by pouring technology shaping, can play the effect of preventing gas leakage and oil impregnate after whole die-casting vulcanization molding to, seal 2 of this embodiment is made by deformable material.
As a preferred embodiment of this embodiment, the sealing body 2 of this embodiment is made of materials such as nitrile rubber, acrylate or oil-resistant rubber, and the nitrile rubber or acrylate has the advantages of good oil resistance, high wear resistance, good heat resistance, strong adhesion, and the like, and is suitable for the application scenario of the terminal of this embodiment.
The inner wall and the naked line section sealing connection of the seal 2 of this embodiment, the one end of seal 2 is connected with first body, and the other end is connected with second body 11, and seal 2 still with oil-immersed transformer, power capacitor or other take structure sealing connection such as wire hole of taking oily electric equipment, seal 2 has two functions promptly, and one function is used for sealed oil-immersed transformer, power capacitor or other electric connection equipment such as taking oily electric equipment, and another function is used for sealed binding post's inside.
In a preferred embodiment of this embodiment, the sealing body 2 is bonded to the bare wire section by an adhesive layer, specifically, a special adhesive for nitrile rubber or acrylate rubber is applied to the bare wire section to facilitate bonding between the lead and the nitrile rubber or acrylate rubber.
In order to seal electrical connection equipment such as an oil-immersed transformer, a power capacitor or other equipment with oil and electricity, the radial dimension of the sealing body 2 in the embodiment needs to be larger than that of the protection tube 1, and in such a design, the dimension of the wiring hole of the equipment to be electrically connected is generally far larger than the radial dimensions of the wiring terminal and the protection tube 1, so the shape and the dimension of the sealing body 2 need to be processed to be matched with the wiring hole.
Moreover, the inventor finds that the conventional wiring terminal has small volume due to space limitation, the terminal marks on the terminal are small, and the terminal marks are not easily distributed near the copper connecting columns one by one, so that errors are easily caused during wiring, and the body or external equipment is damaged. Therefore, the terminal labels can be arranged on the sealing body 2, so that the terminal labels are convenient to identify and the wiring errors are prevented.
In order to realize better sealing connection, in the axial direction of the sealing body 2, the sealing body 2 of the embodiment comprises a connecting section 21, a limiting section 22 and a sealing section 23 which are sequentially arranged; the connecting section 21 of this embodiment is connected to the first tube of the protection tube 1, the sealing section 23 of this embodiment is connected to the second tube 11 of the protection tube 1, and the radial dimension of the limiting section 22 of this embodiment is larger than the radial dimension of the connecting section 21 and smaller than the radial dimension of the sealing section 23; wherein, one side of sealing section 23 near spacing section 22 is equipped with sealed face 231, and sealed face 231 is used for sealing the wiring hole of electrical connection equipment such as oil-immersed transformer, power capacitor or other oily electric equipment.
During electrical connection, the connection section 21 of this embodiment is located inside structures such as an oil-immersed transformer, a power capacitor, or other devices with oil and electricity, the limiting section 22 is installed in the wiring hole, and the sealing section 23 is in sealing fit with the wiring hole, so as to complete sealing of the devices to be electrically connected.
As a preferred embodiment of this embodiment, from the end far away from the sealing section 23 to the end close to the sealing section 23, the radial dimension of the limiting section 22 is gradually increased, so that the limiting section 22 can be deformed and extruded to be installed in the wire hole, and is in limiting fit with the wire hole, and thus the sealing surface 231 can realize good sealing to the wire hole.
Generally, the length of the first pipe body of the present embodiment is greater than the length of the second pipe body 11, and the first pipe body is located inside an electrical connection device such as an oil-immersed transformer, a power capacitor, or other devices with oil and electricity, so as to better protect a lead, as a preferred embodiment of the present embodiment, the first pipe body of the present embodiment is externally sleeved with the first protective decorative sleeve 3, preferably, the first protective decorative sleeve 3 of the present embodiment is made of glass fiber, and has the advantages of good insulation, strong heat resistance, good corrosion resistance, high mechanical strength, and the like, and the oil resistance and the temperature resistance of the part of the connection terminal located inside the device can be improved.
In addition, the second body 11 of this embodiment is equipped with second protection decorative cover 4, and the second protection decorative cover 4 parcel seal 2 and the junction of second body 11, the length of second protection decorative cover 4 is less than the length of second body 11, its main function is the seam between protection seal 2 and the second body 11, that is to say, the part that the lead wire of this embodiment is located the electrical connection equipment outside mainly protects through second body 11, the material of second body 11 is silica gel, can guarantee the compliance and the wearability of lead wire.
Preferably, the second protective decorative cover 4 of this embodiment is a heat shrink tube made of polyolefin, and certainly, a silicone tube is also used, and the heat shrink tube has the characteristics of high-temperature shrinkage, softness, flame retardance, insulation, corrosion resistance and the like, and can be well combined with the sealing body 2 and the second tube body 11 to seal the joint between the two, so as to avoid the lead wire from being exposed.
Based on the above structure, in order to realize the electrical connection, one end of the lead of the present embodiment is connected to the first cable connector 5, and the other end is connected to the second cable connector 6, and since the first cable connector 5 and the second cable connector 6 are commonly used structures, the present embodiment does not describe the structures and the operation principles of the two.
In summary, according to the connection terminal provided by the embodiment, the sealing body 2 can be connected with an oil-immersed transformer, a power capacitor or other oil-carrying electrical equipment, so that oil is prevented from leaking outside, the sealing inside the connection terminal is realized through the sealing connection between the sealing body 2 and the lead, the oil is prevented from flowing out from the connection terminal, and the sealing performance to the oil is improved; and because the sealing body 2 is made of deformable materials, the sealing body can automatically compensate after experiencing temperature change, prevent cracks from occurring at the joints of the sealing body and other structures, and ensure the connection performance.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. A connecting terminal comprises a lead and a protection tube laid outside the lead, and is characterized by also comprising a sealing body made of a deformable material;
the lead comprises an exposed bare wire section, and the protection tube comprises a first tube body and a second tube body which are respectively positioned at two sides of the bare wire section;
the seal body is arranged on the bare wire section, the inner wall of the seal body is connected with the bare wire section in a sealing mode, one end of the seal body is connected with the first pipe body, and the other end of the seal body is connected with the second pipe body.
2. A terminal according to claim 1, wherein the sealing body is bonded to the bare wire segment by an adhesive layer.
3. The connection terminal according to claim 1, wherein a radial dimension of the sealing body is larger than a radial dimension of the protection tube.
4. The connection terminal according to claim 3, wherein the sealing body comprises a connection section, a limiting section and a sealing section which are arranged in sequence along the axial direction of the sealing body;
the radial dimension of the limiting section is larger than that of the connecting section and smaller than that of the sealing section;
the connecting section is connected with the first pipe body, the limiting section is in limiting fit with the to-be-electrically-connected equipment, a sealing surface is arranged on one side, close to the limiting section, of the sealing section, and the sealing surface is in sealing fit with the to-be-electrically-connected equipment.
5. The terminal according to claim 4, wherein the radial dimension of the limiting section gradually increases from the end far away from the sealing section to the end close to the sealing section.
6. The connecting terminal according to claim 1, wherein the first tube body is externally sleeved with a first protective decorative sleeve;
and/or, the second body is provided with a second protective decorative sleeve, and the second protective decorative sleeve wraps the joint of the sealing body and the second body.
7. The connecting terminal according to claim 6, wherein the first protective decorative cover comprises fiberglass.
8. The connecting terminal according to claim 6, wherein the second protective decorative sleeve is a heat shrink tube or a silicone tube.
9. A terminal according to any one of claims 1 to 8, wherein the sealing body is made of nitrile rubber, acrylate or oil resistant rubber.
10. A terminal according to any one of claims 1 to 8, wherein the lead is connected at one end to a first cable connector and at the other end to a second cable connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021947438.8U CN212695421U (en) | 2020-09-08 | 2020-09-08 | Connecting terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021947438.8U CN212695421U (en) | 2020-09-08 | 2020-09-08 | Connecting terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212695421U true CN212695421U (en) | 2021-03-12 |
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ID=74903731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021947438.8U Active CN212695421U (en) | 2020-09-08 | 2020-09-08 | Connecting terminal |
Country Status (1)
| Country | Link |
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| CN (1) | CN212695421U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114725590A (en) * | 2022-01-28 | 2022-07-08 | 东莞市万连实业有限公司 | Battery module connecting piece with waterproof function and preparation method thereof |
-
2020
- 2020-09-08 CN CN202021947438.8U patent/CN212695421U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114725590A (en) * | 2022-01-28 | 2022-07-08 | 东莞市万连实业有限公司 | Battery module connecting piece with waterproof function and preparation method thereof |
| CN114725590B (en) * | 2022-01-28 | 2024-02-02 | 东莞市万连实业有限公司 | Battery module connecting piece with waterproof function |
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