Automotive cable gland plug

Abstract

The utility model belongs to the technical field of automobile parts, concretely relates to a kind of automobile cable reinforcing plug, including first connecting end and second connecting end, the first connecting end is provided with the first protective shell of axial overhanging extension outside, the first protective shell at least a part of circumferential is adhered to the second protective shell outside the second protective shell provided on second connecting end, and it is connected with the second protective shell axially by connecting assembly, the second protective shell is provided with the fastening assembly of axial elastic, the fastening assembly is resisted in the first connecting end and the connecting assembly forms opposite resistance. Connecting assembly is connected and fixed between two protective shells, two plugs are mutually fixed by the extrusion clamping of connecting elastic sheet and other side protective shell, and the fastening assembly is also provided in protective shell between two connector pieces and the elastic force of separation is applied, resistance is formed by the clamping force of this elastic force and connecting assembly, so that double constraint is formed, so that connector has more stable state when two forces keep balance.

Description

Technical Field

[0001] This utility model belongs to the field of automotive parts technology, specifically relating to an automotive cable reinforcement plug. Background Technology

[0002] Automotive wiring harnesses are the main network of a car's electrical system, connecting and enabling the car's electrical and electronic components to function. Without wiring harnesses, there would be no automotive electrical system. Whether it's a high-end luxury car or an economy car, the wiring harness structure is basically the same: it consists of wires, connectors, and wrapping tape. It must ensure the transmission of electrical signals, guarantee the reliability of the connected circuits, supply the specified current to the electronic and electrical components, prevent electromagnetic interference to surrounding circuits, and eliminate electrical short circuits.

[0003] A quick-locking structure for cable connectors, disclosed in patent CN217984486U, relates to the field of cable connection. The quick-locking structure includes a first connector, a second connector mounted on the first connector, a first fitting shell fixedly connected to the first connector, a second fitting shell fixedly connected to the second connector, and a locking post fixedly connected to one end of a sliding rod. The quick-locking structure for cable connectors provided by this invention allows for convenient quick-locking connection between the first and second connectors by pulling the locking post and rotating the rotating rod until the horizontal locking strip at one end of the locking post moves into the corresponding locking groove on the second side block. Furthermore, by inserting the outer protruding ring on the first fitting shell into the annular inner groove on the second fitting shell, the attached annular sealing ring engages with the annular meshing teeth on the side wall of the embedded annular sealing ring, thus achieving a sealing connection between the first and second fitting shells simultaneously during locking.

[0004] In the above solution, although a locking mechanism is set to connect the two fitting shells, there is no fixed structure between the two connectors. The connectors may loosen due to insertion and removal, and movement of the cable, as well as the fixing of the fitting shells, resulting in stability problems in the connection of the connectors. Summary of the Invention

[0005] The purpose of this invention is to address the aforementioned problems by providing an automotive cable reinforcement plug that can solve the technical issues described above.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: The automotive cable reinforcement plug includes a first connecting end and a second connecting end. The first connecting end is provided with an axially suspended first protective shell. At least a portion of the first protective shell is circumferentially attached to the second protective shell provided on the second connecting end and is axially connected to the second protective shell through a connecting component. The second protective shell is provided with an axially elastic fastening component. The fastening component abuts against the first connecting end and forms opposing resistance with the connecting component.

[0007] In the aforementioned automotive cable reinforcement plug, the connecting assembly includes a plurality of connecting springs formed by the axial extension portion of the first protective shell, each of the connecting springs radially abutting against the outer periphery of the second protective shell.

[0008] In the aforementioned automotive cable reinforcement plug, a friction layer is provided on the side of the connecting spring near the axis, and the friction layer radially abuts against the outer periphery of the second protective shell.

[0009] In the aforementioned automotive cable reinforcement plug, the connecting spring is provided with a snap-fit ​​groove, which cooperates with the snap-fit ​​protrusion provided on the outer periphery of the second protective shell to form an axial abutment.

[0010] In the aforementioned automotive cable reinforcement plug, each of the connecting springs has a continuous thread on the side away from the axis, and each of the connecting springs has a fastening ring on its outer periphery that mates with the thread. The fastening ring applies radial pressure to the connecting spring as it rotates with the thread.

[0011] In the aforementioned automotive cable reinforcement plug, the outer arc surface of the fastening ring is provided with several anti-slip protrusions.

[0012] In the aforementioned automotive cable reinforcement plug, clearance gaps are evenly provided between adjacent connecting springs.

[0013] In the aforementioned automotive cable reinforcement plug, the fastening assembly includes a fastening spring and a stop ring. One end of the fastening spring is disposed on the second connecting end, and the other end of the fastening spring is disposed on the stop ring and pushes the stop ring toward the first connecting end.

[0014] In the aforementioned automotive cable reinforcement plug, an annular groove is formed between the second connecting end and the second protective shell, and the abutment ring slides within it with a gap fit.

[0015] In the aforementioned automotive cable reinforcement plug, a buffer layer is provided on the axial end face of the abutment ring, and the buffer layer abuts axially against the end face of the first connection end under the action of the fastening spring.

[0016] The advantages of this utility model are: A connecting component is provided between the two protective shells for connection and fixation. The two plugs are fixed to each other by pressing and snapping the connecting spring against the other protective shell. At the same time, a fastening component is also provided inside the protective shell to apply a separating elastic force between the two connectors. This elastic force and the snapping force of the connecting component resist each other to form a double constraint, so that the connector has a more stable state when the two forces are balanced. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the internal structure of this utility model.

[0019] Figure 3 This is a schematic diagram of the second connecting end structure of this utility model.

[0020] Figure 4 This is a schematic diagram of the first connecting end structure of this utility model.

[0021] In the diagram, there are: first connecting end 1, first protective shell 11, second connecting end 2, second protective shell 21, connecting assembly 3, connecting spring 31, friction layer 32, snap-fit ​​groove 33, fastening ring 34, anti-slip protrusion 35, snap-fit ​​protrusion 36, fastening assembly 4, fastening spring 41, abutting ring 42, and buffer layer 43. Detailed Implementation

[0022] The following are specific embodiments of the utility model, which are described in conjunction with the accompanying drawings to further illustrate the technical solution of the utility model. However, the utility model is not limited to these embodiments.

[0023] like Figures 1-4 As shown, the automotive cable reinforcement plug includes a first connecting end 1 and a second connecting end 2. The first connecting end 1 is provided with an axially suspended first protective shell 11. At least a portion of the first protective shell 11 is circumferentially attached to a second protective shell 21 provided on the outside of the second connecting end 2, and is axially connected to the second protective shell 21 through a connecting component 3. An axially elastic fastening component 4 is provided inside the second protective shell 21. The fastening component 4 abuts against the first connecting end 1 and forms opposing resistance with the connecting component 3.

[0024] That is, a connecting component is provided between the two protective shells for connection and fixation. The two plugs are fixed to each other by pressing and snapping the connecting spring against the other protective shell. At the same time, a fastening component is also provided inside the protective shell to apply a separating elastic force between the two connectors. This elastic force and the snapping force of the connecting component resist each other to form a double constraint, so that the connector has a more stable state when the two forces are balanced.

[0025] In this embodiment, the connecting component 3 includes a plurality of connecting springs 31 formed by the axially extending portion of the first protective shell 11, and each connecting spring 31 radially abuts against the outer periphery of the second protective shell 21.

[0026] The first protective shell has several flexible spring clips cut equidistantly along its circumference at its end. During assembly, these spring clips slightly contract inward, and expand upon insertion into the second protective shell, generating a radial clamping force. This spring clip structure enables flexible assembly and automatic locking, allowing for smoother insertion and removal operations while ensuring a secure connection.

[0027] In this embodiment, a friction layer 32 is provided on the side of the connecting spring 31 near the axis, and the friction layer 32 radially abuts against the outer periphery of the second protective shell 21.

[0028] The friction layer can be made of rubber rings, silicone pads or high-friction coatings and adhered to the inner wall of the spring to enhance the radial friction between the protective shells. This can effectively prevent the plug from slipping relative to each other in a vibrating environment and improve the sealing effect and long-term locking reliability.

[0029] In this embodiment, the connecting spring 31 is provided with a snap-fit ​​groove 33, which cooperates with the snap-fit ​​protrusion 36 provided on the outer periphery of the second protective shell 21 to form an axial abutment.

[0030] The interlocking groove and protrusion form a mechanical locking structure that enables quick insertion and repeated connection, preventing the connector from falling off under tension or vibration.

[0031] In this embodiment, each connecting spring 31 is provided with a continuous thread on the side away from the axis, and each connecting spring 31 is provided with a fastening ring 34 that engages with the thread on its outer periphery. The fastening ring 34 applies radial pressure to the connecting spring 31 as the thread rotates.

[0032] The fastening ring is a threaded locking ring. After rotation, it applies inward pressure, causing the spring clip to retract and tightly grip the second protective shell, achieving high-strength fixation. Combining the dual effects of threaded clamping and elastic holding, the plug possesses high waterproof sealing performance and pull-out resistance, meeting the requirements for use in high-vibration areas such as vehicle engine compartments.

[0033] In this embodiment, a plurality of anti-slip protrusions 35 are provided on the outer arc surface of the fastening ring 34.

[0034] By using injection molding or knurling to create uniform bumps or granular textures on the outer surface of the ring, the gripping friction during operation is improved, making it easier to tighten manually or with tools and improving assembly efficiency.

[0035] In this embodiment, clearance gaps are evenly provided between adjacent connecting spring pieces 31.

[0036] The gap width is set according to the elasticity of the spring material to ensure that the spring can fully deform elastically after being compressed, so that the outer layer of the protective shell is subjected to more uniform force, avoids the generation of metal fatigue cracks, and extends the service life.

[0037] In this embodiment, the fastening assembly 4 includes a fastening spring 41 and a stop ring 42. One end of the fastening spring 41 is disposed on the second connecting end 2, and the other end of the fastening spring 41 is disposed on the stop ring 42 and pushes the stop ring 42 toward the first connecting end 1.

[0038] The spring is a helical compression spring, installed in a recessed cavity inside the second protective housing. The abutment ring is a metal or rigid plastic ring that, pushed by the spring, forms an axial preload on the mating surface. This structure provides a constant preload to counteract the micro-displacement caused by vehicle vibration, preventing the plug from loosening, and also acts as an energy absorber to extend the life of the contact end.

[0039] In this embodiment, an annular groove is formed between the second connecting end 2 and the second protective shell 21, and the abutment ring 42 slides within it with a clearance fit.

[0040] The inner wall of the groove is smooth, and the gap between the rings ensures elastic sliding, allowing the abutment ring to absorb impact stress within a micro-displacement range, reducing local wear or loosening of electrical connections. At the same time, the fastening ring outside the second protective shell corresponds to the inner abutment ring, and the abutment ring can additionally resist the pressure of the fastening ring tightening the connecting spring, giving the second protective shell better structural strength.

[0041] In this embodiment, a buffer layer 43 is provided on the axial end face of the abutment ring 42, and the buffer layer 43 abuts axially against the end face of the first connecting end 1 under the action of the fastening spring 41.

[0042] The buffer layer can be made of soft materials such as high-temperature resistant rubber or polytetrafluoroethylene gaskets and attached or embedded on the ring surface. The buffer layer provides flexible buffering for the joint when it is subjected to force, reduces rigid impact, improves sealing life and shock resistance, and can also serve as the contact connection part of the sealing joint.

[0043] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A car cable reinforcement plug, comprising a first connecting end (1) and a second connecting end (2), characterized in that, A first protective shell (11) is provided outside the first connecting end (1) and extends axially. At least a portion of the first protective shell (11) is circumferentially attached to the second protective shell (21) provided outside the second connecting end (2) and is axially connected to the second protective shell (21) through a connecting component (3). An axially elastic fastening component (4) is provided inside the second protective shell (21). The fastening component (4) abuts against the first connecting end (1) and forms opposing resistance with the connecting component (3).

2. The automotive cable reinforcement plug according to claim 1, characterized in that, The connecting assembly (3) includes a plurality of connecting springs (31) formed by the axial extension portion of the first protective shell (11), and each of the connecting springs (31) radially abuts against the outer periphery of the second protective shell (21).

3. The automotive cable reinforcement plug according to claim 2, characterized in that, The connecting spring (31) is provided with a friction layer (32) on the side near the axis, and the friction layer (32) radially abuts against the outer periphery of the second protective shell (21).

4. The automotive cable reinforcement plug according to claim 2, characterized in that, The connecting spring (31) has a snap-fit ​​groove (33), which cooperates with the snap-fit ​​protrusion (36) on the outer periphery of the second protective shell (21) to form an axial abutment.

5. The automotive cable reinforcement plug according to claim 2, characterized in that, Each of the connecting springs (31) has a continuous thread on the side away from the axis, and each of the connecting springs (31) has a fastening ring (34) that mates with the thread on its outer periphery. The fastening ring (34) applies radial pressure to the connecting spring (31) as the thread rotates.

6. The automotive cable reinforcement plug according to claim 5, characterized in that, The outer arc surface of the fastening ring (34) is provided with several anti-slip protrusions (35).

7. The automotive cable reinforcement plug according to claim 2, characterized in that, A clearance gap is evenly provided between adjacent connecting springs (31).

8. The automotive cable reinforcement plug according to claim 1, characterized in that, The fastening assembly (4) includes a fastening spring (41) and a stop ring (42). One end of the fastening spring (41) is disposed on the second connecting end (2), and the other end of the fastening spring (41) is disposed on the stop ring (42) and pushes the stop ring (42) toward the first connecting end (1).

9. The automotive cable reinforcement plug according to claim 8, characterized in that, An annular groove is formed between the second connecting end (2) and the second protective shell (21), and the abutment ring (42) slides therein with a gap fit.

10. The automotive cable reinforcement plug according to claim 8, characterized in that, A buffer layer (43) is provided on the axial end face of the abutment ring (42), and the buffer layer (43) abuts against the end face of the first connecting end (1) axially under the action of the fastening spring (41).

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