Short circuit prevention structure added in electrical connection
By setting an insulating sleeve and a mounting sleeve on the outside of the PIN pin terminal, the concentricity of the PIN pin terminal and the connecting post is improved, which solves the problems of poor plugging and short circuit in Fakra harnesses, and ensures the stability of signal transmission and the convenience of plugging.
Patent Information
- Application Number
- CN202520173544.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-26
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-01-26
AI Technical Summary
Existing Fakra harnesses are prone to misalignment between the pins of the socket and the pins of the plug during the connection process, which can lead to bending, deformation, or impact, potentially causing short circuits and affecting signal transmission.
An insulating sleeve is installed on the outside of the PIN pin terminal, and the concentricity between the PIN pin terminal and the connecting post is improved by the insulating sleeve to avoid short circuit. The use of the insulating sleeve and the mounting sleeve improves the concentricity of the insertion and reduces the difficulty of insertion.
This effectively avoids contact between the PIN terminals and other metal parts, preventing short circuits, improving the concentricity and stability of the connection, and ensuring normal signal transmission.
Smart Images
Figure CN223843215U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electrical connection structure technology, and more specifically, to an electrical connection structure that enhances short-circuit protection. Background Technology
[0002] Fakra wiring harnesses are specialized wiring harnesses used in the automotive industry, with Fakra connectors as their core component. Fakra connectors are standard interfaces specifically designed for radio frequency (RF) signal transmission in the automotive sector, offering high standardization and compatibility. Fakra wiring harnesses are primarily used to connect and transmit RF signals between various electronic devices within a vehicle, such as connecting vehicle antennas to car radios, navigation systems, Bluetooth modules, and digital TV receivers, ensuring these devices can stably receive and process RF signals from the antenna.
[0003] Some existing Fakra harnesses, including cables and PIN pins at one end of the cable, are paired with connectors that have annular connecting posts and plug pins located inside the connecting posts. The PIN pins and plug pins are compatible. When the Fakra harness is electrically connected to the compatible connector, one end of the Fakra harness needs to be manually inserted into the connector so that the PIN pins align with the plug pins. Due to some concentricity error of the PIN pins during production or improper operation by the operator, it is difficult to align the PIN pins with the plug pins, resulting in misalignment. In this case, the PIN pins are prone to bending, deformation, or damage from impacts, affecting subsequent normal use. When the PIN pins are bent, they are also prone to contact with the metal connecting posts on the connector, causing a short circuit and preventing normal signal transmission, thus affecting normal use. Utility Model Content
[0004] To address at least one of the aforementioned problems, this utility model provides an electrical connection structure with enhanced short-circuit protection, comprising: a connecting wire unit and a connector unit detachably connected to the connecting wire unit. The connecting wire unit includes a wire body and a first PIN terminal disposed at one end of the wire body, the wire body being electrically connected to the first PIN terminal. The connector unit is provided with an annular connecting post and a second PIN terminal corresponding to and inserted into the first PIN terminal. The second PIN terminal is disposed inside the connecting post, and an insulating sleeve is disposed outside the first PIN terminal. When the first PIN terminal and the second PIN terminal are inserted, the outer wall of the insulating sleeve abuts against the inner wall of the connecting post. This utility model's electrical connection structure with enhanced short-circuit protection is simple in structure and has low production cost. The insulating sleeve on the outer side of the first PIN terminal makes it less likely for the outer wall of the first PIN terminal to come into contact with other metal parts, thus preventing short circuits. When the connecting wire unit and the connector unit are inserted, the insulating sleeve can improve the concentricity of the first PIN terminal and the second PIN terminal, avoiding problems such as misaligned insertion.
[0005] Optionally, the first PIN pin terminal is a female PIN pin terminal, and the second PIN pin terminal is a male PIN pin terminal.
[0006] Optionally, a mounting sleeve is provided on the outside of the first PIN terminal, and the insulating sleeve is fitted on the outside of the mounting sleeve.
[0007] Optionally, one end of the mounting sleeve is provided with a first annular guide post, and the insulating sleeve is sleeved on the outside of the first annular guide post. Both the insulating sleeve and the connecting guide post are annular. The first annular guide post, the insulating sleeve, and the first PIN terminal are concentrically arranged. The second PIN terminal is concentrically arranged with the connecting guide post. When the first PIN terminal and the second PIN terminal are inserted, the first annular guide post is placed inside the connecting guide post.
[0008] Optionally, the mounting sleeve is provided with a mounting groove for mounting the insulating sleeve, and the inner side of the insulating sleeve is embedded in the mounting groove.
[0009] Optionally, a connecting sleeve is provided on the outer side of the mounting sleeve, and a second annular guide post is provided at one end of the connecting sleeve. The second annular guide post is detachably inserted into the outer side of the connecting guide post.
[0010] Optionally, a first guide slope corresponding to the connecting guide post is provided on one side of the insulating sleeve.
[0011] Optionally, the connecting guide post is provided with a second guide slope corresponding to the insulating sleeve at its side end.
[0012] Optionally, the insulating sleeve is made of silicone, rubber, or soft plastic.
[0013] Optionally, the connecting line unit further includes a Fakra wire-end connector housing connected to one end of the wire body, the first PIN pin terminal being located inside the Fakra wire-end connector housing, and the connector unit further includes a Fakra board-end connector housing that is detachably plugged into the Fakra wire-end connector housing.
[0014] Compared to existing technologies, the electrical connection in this invention incorporates a short-circuit protection structure, resulting in a simple structure and low production cost. An insulating sleeve is provided on the outer side of the first PIN terminal, preventing the outer wall of the first PIN terminal from contacting other metal components and avoiding short circuits. When the connecting wire unit and connector unit are inserted, the insulating sleeve improves the concentricity of the first and second PIN terminals, preventing misalignment or other poor insertion problems. A mounting sleeve is provided on the outer side of the first PIN terminal, with the insulating sleeve fitted over it. The insulating sleeve improves the concentricity between the mounting sleeve and the connecting guide post, thereby improving the concentricity between the first PIN terminal and the connecting guide post. The structural design is reasonable. The insulating sleeve improves the concentricity between the first annular guide post and the connecting guide post, and... It can avoid the problem of short circuit when the first annular guide post comes into contact with the connecting guide post; one side of the insulating sleeve is provided with a first guide bevel corresponding to the connecting guide post, which facilitates the insertion of the insulating sleeve into the connecting guide post, reduces the difficulty of plugging in the connecting wire unit, and has low requirements for alignment during plugging; the insulating sleeve is made of silicone, rubber or soft plastic, making the insulating sleeve soft and preventing damage to the connecting guide post when the insulating sleeve comes into contact with the connecting guide post; during transmission, the insulating sleeve provides a certain shock absorption protection between the mounting sleeve and the connecting guide post, improving the stability of signal transmission; the first PIN terminal and the second PIN terminal can be plugged in / out by plugging / unplugging the Fakra line end connector housing and the Fakra board end connector housing, which is convenient to operate. Attached Figure Description
[0015] Figure 1 A perspective view showing the addition of a short-circuit protection structure to the electrical connection of this utility model;
[0016] Figure 2 A cross-sectional view showing the addition of a short-circuit protection structure to the electrical connection of this utility model;
[0017] Figure 3 for Figure 2 Enlarged view of section A;
[0018] Figure 4 A schematic diagram of the Fakra board-end connector housing with added short-circuit protection structure for the electrical connection of this utility model;
[0019] Figure 5 A schematic diagram of the Fakra connector housing with added short-circuit protection structure for electrical connection in this utility model;
[0020] The component names corresponding to the various reference numerals in the figure are as follows: 1 is the connecting wire unit, 2 is the connector unit, 21 is the connecting guide post, 211 is the second guide bevel, 22 is the second PIN pin terminal, 3 is the wire body, 4 is the first PIN pin terminal, 41 is the mounting sleeve, 411 is the first annular guide post, 412 is the mounting groove, 5 is the insulating sleeve, 51 is the first guide bevel, 6 is the connecting sleeve, 61 is the second annular guide post, 611 is the elastic part, 7 is the Fakra wire end connector housing, and 8 is the Fakra board end connector housing. Detailed Implementation
[0021] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.
[0022] In the description of this utility model, it should be understood that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship when the product is in normal use.
[0023] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature.
[0024] See Figures 1-5 This utility model provides an electrical connection structure with enhanced short-circuit protection, comprising: a connecting wire unit 1 and a connector unit 2 detachably connected to the connecting wire unit 1. The connecting wire unit 1 includes a wire body 3 and a first PIN terminal 4 disposed at one end of the wire body 3. A metal wire inside the wire body 3 is electrically connected to the first PIN terminal 4. The wire body 3 is electrically connected to the first PIN terminal 4. The connector unit 2 is provided with an annular connecting guide post 21 and a second PIN terminal 22 corresponding to the first PIN terminal 4. The second PIN terminal 22 is disposed inside the connecting guide post 21. An insulating sleeve 5 is provided on the outside of the IN pin terminal 4. When the first PIN pin terminal 4 and the second PIN pin terminal 22 are inserted, the outer wall of the insulating sleeve 5 abuts against the inner wall of the connecting guide post 21. The electrical connection of this utility model adds a short-circuit protection structure, which is simple in structure and low in production cost. The insulating sleeve on the outside of the first PIN pin terminal makes it difficult for the outer wall of the first PIN pin terminal to come into contact with other metal parts, thus avoiding short circuits. When the connecting line unit and the connector unit are inserted, the insulating sleeve can improve the concentricity of the first PIN pin terminal and the second PIN pin terminal, thus avoiding problems such as misaligned insertion.
[0025] See Figures 2-5 The first PIN terminal 4 is a female PIN terminal, and the second PIN terminal 22 is a male PIN terminal. The female PIN terminal has a socket, and the male PIN terminal contacts and inserts into the socket to achieve electrical connection. A mounting sleeve 41 is provided on the outside of the first PIN terminal 4, and an insulating sleeve 5 is fitted over the outside of the mounting sleeve 41. The insulating sleeve 5 improves the concentricity between the mounting sleeve 41 and the connecting guide post 21, thereby improving the concentricity between the first PIN terminal 4 and the connecting guide post 21. The structural design is reasonable. One end of the mounting sleeve 41 is provided with a first annular guide post 411, and the insulating sleeve... The insulating sleeve 5 and the connecting guide post 21 are both circular and are set outside the first annular guide post 411. The first annular guide post 411, the insulating sleeve 5 and the first PIN terminal 4 are concentrically arranged. The second PIN terminal 22 is concentrically arranged with the connecting guide post 21. When the first PIN terminal 4 and the second PIN terminal 22 are inserted, the first annular guide post 411 is placed inside the connecting guide post 21. The insulating sleeve 5 improves the concentricity between the first annular guide post 411 and the connecting guide post 21 and can avoid the problem of short circuit when the first annular guide post 411 contacts the connecting guide post 21.
[0026] See Figure 2 and Figure 3 The mounting sleeve 41 is provided with a mounting groove 412 for mounting the insulating sleeve 5. The inner side of the insulating sleeve 5 is embedded in the mounting groove 412, making the insulating sleeve 5 less prone to displacement and the installation more stable. The insulating sleeve 5 can also be fixed to the mounting sleeve 41 by other technical solutions, such as providing a protrusion on the mounting sleeve 41 to limit the position of the insulating sleeve 5 or fixing it with glue. Anti-slip structures such as anti-slip grooves and anti-slip protrusions can also be provided on the mounting sleeve 41 and / or the insulating sleeve 5 for positioning. A connecting sleeve 6 is fitted on the outer side of the mounting sleeve 41. The connecting sleeve 6 can be made of metal, and the mounting sleeve 41 can be made of insulating material. A second ring is provided at one end of the connecting sleeve 6. The second annular guide post 61 is detachably inserted into the outside of the connecting guide post 21. One end of the second annular guide post 61 is provided with an elastic part 611 for abutting against the outer wall of the connecting guide post 21. The insulating sleeve 5 is provided with a first guide slope 51 corresponding to the connecting guide post 21 on one side. The first guide slope 51 is annular, which facilitates the insertion of the insulating sleeve 5 into the connecting guide post 21, reduces the difficulty of inserting the connecting wire unit 1 into the connecting wire unit 21, and has low requirements for alignment during insertion. The connecting guide post 21 is provided with a second guide slope 211 corresponding to the insulating sleeve 5 on the side end, which facilitates the insertion of the insulating sleeve 5 into the connecting guide post 21 and reduces the difficulty of insertion.
[0027] See Figures 1-3The insulating sleeve 5 is made of silicone, rubber or soft plastic, which makes the insulating sleeve 5 soft and prevents the connecting guide post 21 from being damaged when the insulating sleeve 5 comes into contact with the connecting guide post 21; and during transmission, the insulating sleeve 5 provides a certain shock absorption protection between the mounting sleeve 41 and the connecting guide post 21, thereby improving the stability of signal transmission.
[0028] See Figure 1 , Figure 2 , Figure 4 and Figure 5 The connecting unit 1 also includes a Fakra wire end connector housing 7 connected to one end of the wire body 3. The first PIN terminal 4 is located inside the Fakra wire end connector housing 7. The connector unit 2 also includes a Fakra board end connector housing 8 that is detachably plugged into the Fakra wire end connector housing 7. By plugging / unplugging the Fakra wire end connector housing 7 and the Fakra board end connector housing 8, the first PIN terminal 4 and the second PIN terminal 22 can be plugged / unplugged, which is convenient to operate.
[0029] The electrical connection in this invention incorporates a short-circuit protection structure, resulting in a simple structure and low production cost. An insulating sleeve is provided on the outer side of the first PIN terminal, preventing the outer wall of the first PIN terminal from contacting other metal parts and avoiding short circuits. When the connecting wire unit and the connector unit are inserted, the insulating sleeve improves the concentricity of the first and second PIN terminals, preventing misalignment or other poor insertion problems. An mounting sleeve is provided on the outer side of the first PIN terminal, with the insulating sleeve fitted over it. The insulating sleeve improves the concentricity between the mounting sleeve and the connecting guide post, thereby improving the concentricity of the first PIN terminal and the connecting guide post. The structural design is reasonable. The insulating sleeve improves the concentricity between the first annular guide post and the connecting guide post, and also prevents... The problem of short circuits occurring when the first annular guide post contacts the connecting guide post is addressed. A first guide bevel corresponding to the connecting guide post is provided on one side of the insulating sleeve, facilitating the insertion of the insulating sleeve into the connecting guide post, reducing the difficulty of connecting the wire units and lowering the alignment requirements during insertion. The insulating sleeve is made of silicone, rubber, or soft plastic, making it flexible and less likely to damage the connecting guide post when it comes into contact with it. During transmission, the insulating sleeve provides shock absorption between the mounting sleeve and the connecting guide post, improving signal transmission stability. The first and second pin terminals can be easily connected and disconnected by inserting / removing the Fakra wire-end connector housing and the Fakra board-end connector housing.
[0030] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.
Claims
1. A structure for enhancing short-circuit protection in electrical connections, characterized in that, include: A connecting wire unit (1) and a connector unit (2) detachably connected to the connecting wire unit (1). The connecting wire unit (1) includes a wire body (3) and a first PIN pin terminal (4) disposed at one end of the wire body (3). The wire body (3) is electrically connected to the first PIN pin terminal (4). The connector unit (2) is provided with an annular connecting guide post (21) and a second PIN pin terminal (22) corresponding to the first PIN pin terminal (4). The second PIN pin terminal (22) is disposed inside the connecting guide post (21). An insulating sleeve (5) is disposed outside the first PIN pin terminal (4). When the first PIN pin terminal (4) and the second PIN pin terminal (22) are inserted, the outer wall of the insulating sleeve (5) abuts against the inner wall of the connecting guide post (21).
2. The electrical connection with short-circuit protection structure according to claim 1, characterized in that, The first PIN pin terminal (4) is a female PIN pin terminal, and the second PIN pin terminal (22) is a male PIN pin terminal.
3. The electrical connection with short-circuit protection structure according to claim 1, characterized in that, An mounting sleeve (41) is provided on the outside of the first PIN pin terminal (4), and the insulating sleeve (5) is fitted on the outside of the mounting sleeve (41).
4. The electrical connection with short-circuit protection structure according to claim 3, characterized in that, The mounting sleeve (41) is provided with a first annular guide post (411) at one end. The insulating sleeve (5) is sleeved on the outside of the first annular guide post (411). The insulating sleeve (5) and the connecting guide post (21) are both annular. The first annular guide post (411), the insulating sleeve (5) and the first PIN terminal (4) are concentrically arranged. The second PIN terminal (22) is concentrically arranged with the connecting guide post (21). When the first PIN terminal (4) and the second PIN terminal (22) are inserted, the first annular guide post (411) is placed inside the connecting guide post (21).
5. The electrical connection with short-circuit protection structure according to claim 3, characterized in that, The mounting sleeve (41) is provided with a mounting groove (412) for mounting the insulating sleeve (5), and the inner side of the insulating sleeve (5) is embedded in the mounting groove (412).
6. The electrical connection with short-circuit protection structure according to claim 3, characterized in that, The mounting sleeve (41) is fitted with a connecting sleeve (6) on its outer side. One end of the connecting sleeve (6) is provided with a second annular guide post (61). The second annular guide post (61) is detachably inserted into the outer side of the connecting guide post (21).
7. The electrical connection with short-circuit protection structure according to claim 1, characterized in that, The insulating sleeve (5) has a first guide slope (51) on one side corresponding to the connecting guide post (21).
8. The electrical connection with short-circuit protection structure according to claim 1, characterized in that, The connecting guide post (21) is provided with a second guide slope (211) corresponding to the insulating sleeve (5) at its side end.
9. The electrical connection with short-circuit protection structure according to claim 1, characterized in that, The insulating sleeve (5) is made of silicone, rubber, or soft plastic.
10. The electrical connection with short-circuit protection structure according to any one of claims 1-9, characterized in that, The connecting line unit (1) further includes a Fakra wire end connector housing (7) connected to one end of the wire body (3), the first PIN pin terminal (4) is located inside the Fakra wire end connector housing (7), and the connector unit (2) further includes a Fakra board end connector housing (8) that is detachably plugged into the Fakra wire end connector housing (7).