An automotive wiring harness connector with controllable insertion force

Abstract

This invention discloses an automotive wiring harness connector with controllable insertion force, relating to the field of connector technology. This automotive wiring harness connector with controllable insertion force includes a female connector housing and a male connector housing. A male wiring harness is fixedly installed inside the male connector housing, and a female wiring harness is fixedly installed inside the female connector housing. The female and male wiring harnesses are fitted together. This automotive wiring harness connector with controllable insertion force uses a flared guide structure formed by the female end guide bevel to provide precise insertion guidance for the male main T-post, fundamentally avoiding the problem of jamming when the female locking block deviates by more than 0.5mm. As the male main T-post penetrates deeper into the female insertion T-groove, the male movable limiting block at the male main T-post end is compressed, causing the elastic ejector rod to be ejected. Simultaneously, the female movable limiting block at the female auxiliary T-post end is compressed by the male T-groove, generating friction, eliminating the need for repeated adjustments to the alignment position.

Description

Technical Field

[0001] This invention relates to the field of connector technology, specifically to an automotive wiring harness connector with controllable insertion force. Background Technology

[0002] Automotive wiring harness connectors are the nerve nodes of automotive electrical systems, responsible for the transmission of current and signals between wiring harnesses and between wiring harnesses and electronics. They directly affect automotive safety, reliability, and intelligence, accounting for 15%-25% of the total cost of vehicle wiring harnesses. They have the functions of transmission, protection and fixation, prevention of mis-insertion, and partial overload protection. Structurally, they are composed of copper alloy terminals, insulators made of materials such as PA66, rubber seals, and locking mechanisms. They are also classified according to voltage and signal type to adapt to different scenarios.

[0003] According to Chinese invention patent CN113507014B, an automotive wiring harness connector is disclosed, which uses multiple parts such as the male and female guide plates and the two ends of the male locking plate respectively engaging with the two ends of the female locking plate. It adopts a double pressing locking connection of the female pressing locking protrusion and the male locking groove, and the male pressing locking protrusion and the female locking groove, so that the male and female connectors of the wiring harness connector are locked and secure, and are not easy to loosen or fall off. The pressing locking connection facilitates the quick and convenient installation or removal of the male and female connectors of the wiring harness connector.

[0004] The existing automotive wiring harness connectors in the patented inventions use a straight slot and straight block mating structure, which has obvious defects in actual installation scenarios: On the one hand, during the insertion process, misalignment can easily cause jamming. When the female block offset exceeds 0.5mm, it will directly jam at the entrance of the male slot, requiring repeated adjustments to continue the operation; on the other hand, the operating space in the car's engine compartment is small, and the aforementioned jamming problem will further reduce installation efficiency significantly; in addition, existing connectors also have the problem of difficulty in controlling the insertion force. If too much force is applied during insertion, the connectors will be too tightly clamped, making it impossible to separate them smoothly when needed, causing great inconvenience to subsequent operations such as maintenance and replacement. Summary of the Invention

[0005] The purpose of this invention is to provide an automotive wiring harness connector with controllable insertion force, which solves the problems mentioned in the background art by guiding and increasing friction.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an automotive wiring harness connector with controllable insertion force, comprising a female connector housing and a male connector housing, wherein a male connector wiring harness is fixedly installed inside the male connector housing, and a female connector wiring harness is fixedly installed inside the female connector housing, wherein the female connector wiring harness and the male connector wiring harness are adapted to each other.

[0007] The male connector harness includes a female end guide bevel, a female end insertion T-slot, and a female end auxiliary T-post. The male connector harness has a female end insertion T-slot inside. The female end insertion T-slot has female end guide bevels at both ends of its outlet. The male connector harness has a female end auxiliary T-post fixedly installed at its bottom. The female end auxiliary T-post has female end movable limit blocks movably installed inside both ends of its two ends.

[0008] The female connector harness has a male T-slot inside. A male main T-post is fixedly installed on the top of the female connector harness. Male movable limiting blocks are movably installed at both ends of the male main T-post. Male elastic ejection holes are arranged in a row at the end of the male main T-post near the male movable limiting block. An elastic ejection rod A is movably installed inside the male elastic ejection hole.

[0009] Preferably, grooves are provided on both sides of the bottom of the female end auxiliary T-post. A limiting block connecting shaft is fixedly connected to the outer wall of the female end movable limiting block. A limiting block outer sleeve is movably sleeved on the outer wall of the limiting block connecting shaft. A shaft end extrusion head is fixedly installed at the end of the limiting block connecting shaft away from the female end movable limiting block. The outer wall of the shaft end extrusion head and the inside of the limiting block outer sleeve are movably sleeved. A primary spring is attached to the side of the shaft end extrusion head near the limiting block outer sleeve. The primary spring is placed inside the limiting block outer sleeve. A sleeve end thrust block is fixedly installed at the end of the limiting block outer sleeve away from the shaft end extrusion head.

[0010] Preferably, a secondary elastic element mounting cylinder is movably sleeved on the outer wall of the outer sleeve of the limiting block. A secondary spring is placed inside the secondary elastic element mounting cylinder, and the outer wall of the secondary spring and the outer wall of the sleeve end thrust block are in contact with each other. The circumferential outer wall of the sleeve end thrust block and the interior of the secondary elastic element mounting cylinder are movably sleeved.

[0011] Preferably, an extension shaft is fixedly installed on the outer wall of the end of the secondary elastic element mounting cylinder away from the sleeve end thrust block. A tertiary elastic element mounting sleeve is movably sleeved on the outer wall of the extension shaft. A tertiary spring is placed inside the tertiary elastic element mounting sleeve. The outer wall of the tertiary spring and the outer wall of the extension shaft fit together. The outer wall of the tertiary elastic element mounting sleeve and the outer wall of the groove are fixedly connected.

[0012] Preferably, a female end insertion limiting protrusion is fixedly installed at the end of the female end guide bevel away from the male end main insertion T-post, a female end transition guide protrusion is connected to the side of the female end insertion limiting protrusion, and a female end end limiting protrusion is fixedly installed on the side of the female end transition guide protrusion.

[0013] Preferably, both ends of the male main insertion T-post are provided with mounting cavities, and both sides of the mounting cavity are provided with rounded corners. An elastic ejector rod is fixedly installed on the outer wall of the male movable limiting block, and an ejector rod buffer spring is movably sleeved on the outer wall of the elastic ejector rod.

[0014] Preferably, a gas compression piston is fixedly installed at the end of the elastic ejector rod away from the male end movable limiting block, and a gas storage box is movably sleeved on the outer wall of the gas compression piston. The outer wall of the gas storage box is embedded in the interior of the male end main insertion T-post. A gas delivery pipe is fixedly installed on one side of the gas storage box. A gas pressure cylinder is fixedly installed on the outer wall of the gas delivery pipe. A pressure pushing block is movably sleeved inside the gas pressure cylinder, and the outer wall of the pressure pushing block is fixedly connected to the outer wall of the elastic ejector rod A. Both the gas pressure cylinder and the gas delivery pipe are embedded in the interior of the male end main insertion T-post.

[0015] Preferably, the compression of the first-stage spring is 0-2mm, corresponding to an elastic force of 20-40N; the compression of the second-stage spring is 2-7mm, corresponding to an elastic force of 40-70N; and the compression of the third-stage spring is 7-10mm, corresponding to an elastic force of 70-100N. When all three are compressed simultaneously, the resulting combined pressure range is 130-210N.

[0016] Preferably, the included angle of the female end guide bevel is 30 degrees, which makes the opening of the female end insertion T-slot funnel-shaped.

[0017] Preferably, the gas storage box contains air.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. This type of automotive wiring harness connector with controllable insertion force utilizes a flared guide structure formed by the female end guide bevel to provide precise insertion guidance for the male main T-post, fundamentally preventing jamming caused by a female locking block offset exceeding 0.5mm. As the male main T-post penetrates deeper into the female insertion T-groove, the male end movable limiting block at the male end T-post is compressed, causing the elastic ejector rod to be ejected, forming initial friction with the inner wall of the female insertion T-groove. Simultaneously, the female end movable limiting block at the female auxiliary T-post is compressed by the male T-groove, generating friction. The two work together to enhance friction, eliminating the need for repeated alignment adjustments. This linkage design is particularly practical in the confined space of the automotive engine compartment. Operators can quickly insert the connector using the guide structure without frequent calibration, and then stabilize the insertion state through the friction structure. This reduces the difficulty of operation in confined spaces, minimizes the risk of accidental contact with surrounding surfaces, and significantly shortens installation time. Compared to existing structures, it significantly improves installation efficiency while reducing wear on the interface from repeated insertions and removals, extending the connector's lifespan.

[0020] 2. This type of automotive wiring harness connector with controllable insertion force works by continuously inserting the male main T-post into the female auxiliary T-post. During this process, the limiting block at the female auxiliary T-post end, connected to the shaft, compresses the primary spring, pushing the secondary elastic element mounting cylinder of the limiting block's outer sleeve to compress the secondary and tertiary springs. This multi-force structure creates a stepped rebound force, ensuring the female movable limiting block tightly fits against the inner wall of the male T-slot. Simultaneously, the compression of the male movable limiting block at the male main T-post end drives the elastic ejector rod and gas compression piston, forcing gas from the gas storage box into the gas pressure cylinder. The change in gas density further increases the pressure of the elastic ejector rod on the female insertion T-slot through the pressure pusher block. The combined effect of these two structures generates 130-210N of pressure. The controllable comprehensive pressure range not only avoids the problem of excessive clamping caused by excessive force in existing connectors, but also ensures that the insertion force is always within a reasonable range through the dual feedback of elastic force and gas pressure, effectively preventing over-insertion. This controllable insertion force design also ensures that there is no need to deal with excessive clamping during subsequent separation, providing convenience for maintenance, replacement and other operations. It realizes a full-process linkage guarantee of smooth insertion, controllable force value and convenient separation, which greatly improves the reliability and practicality of the connector throughout its entire life cycle. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the structure on the left side of the present invention;

[0023] Figure 3 This is a schematic diagram of the internal structure of the male connector harness in this invention;

[0024] Figure 4 This is a schematic diagram of the connection structure of the female end movable limiting block in this invention;

[0025] Figure 5 This is a top-view two-dimensional cross-sectional structural diagram of the female end guide bevel in this invention;

[0026] Figure 6 This is a schematic diagram of the overall structure of the female connecting harness in this invention;

[0027] Figure 7 for Figure 6 Enlarged structural diagram at point A;

[0028] Figure 8 This is a two-dimensional structural diagram of one side of the internal structure of the male-end main T-post in this invention;

[0029] Figure 9 This is a schematic diagram of the three-dimensional model of the connector female end shell in this invention.

[0030] In the diagram: 1. Connector male housing; 2. Connector female housing; 3. Male connector harness; 31. Female guide bevel; 32. Female insertion T-slot; 33. Female auxiliary T-post; 34. Female insertion limiting protrusion; 35. Female transition guide protrusion; 36. Female end limiting protrusion; 4. Female connector harness; 41. Male T-slot; 42. Male main insertion T-post; 43. Mounting cavity; 44. Rounded corner; 5. Female movable limiting block; 51. Limiting block connecting shaft; 52. Shaft end pressing head; 53. Limiting block outer... 54. Sleeve; 55. Primary spring; 56. Sleeve end thrust block; 57. Secondary elastic element mounting cylinder; 58. Secondary spring; 59. Mounting cylinder end extension shaft; 50. Tertiary elastic element mounting sleeve; 510. Tertiary spring; 61. Male end movable limit block; 62. Male end elastic ejection hole; 63. Elastic ejection rod B; 64. Elastic ejection rod A; 65. Ejection rod buffer spring; 66. Gas extrusion piston; 67. Gas storage box; 68. Gas delivery pipe; 69. Pressure push block; 60. Gas pressure cylinder. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Please see Figures 1-9 The present invention provides a technical solution for an automotive wiring harness connector with controllable insertion force: an automotive wiring harness connector with controllable insertion force includes a female connector housing 2 and a male connector housing 1. A male connector wiring harness 3 is fixedly installed inside the male connector housing 1, and a female connector wiring harness 4 is fixedly installed inside the female connector housing 2. The female connector wiring harness 4 and the male connector wiring harness 3 are adapted to each other.

[0033] The male connector harness 3 includes a female end guide bevel 31, a female end plug T-slot 32, and a female end auxiliary T-post 33. The male connector harness 3 has a female end plug T-slot 32 inside. The female end guide bevel 31 is opened at both ends of the outlet of the female end plug T-slot 32. The female end auxiliary T-post 33 is fixedly installed at the bottom of the male connector harness 3. The female end movable limit block 5 is movably installed inside both ends of the female end auxiliary T-post 33.

[0034] The female connector harness 4 has a male T-slot 41 inside. A male main plug T-post 42 is fixedly installed on the top of the female connector harness 4. Male main plug T-post 42 is movably installed at both ends of the male main plug T-post 42. Male main plug T-post 42 has a row of male elastic ejection holes 61 near the male main plug T-post 42. An elastic ejection rod A621 is movably installed inside the male elastic ejection hole 61.

[0035] During operation, the male connector harness 3 installed inside the male housing 1 and the female connector harness 4 installed inside the female housing 2 can be plugged into each other. During plugging, because the female end insertion T-slot 32 has a female end guide angle 31, the male end main insertion T-post 42 fixedly installed on the top of the female connector harness 4 can quickly be inserted into the female end insertion T-slot 32 through the female end guide angle 31, effectively avoiding jamming during plugging.

[0036] As the male main insertion T-post 42 continues to penetrate deeper into the female guide bevel 31, the male movable limiting blocks 6, which are movably installed at both ends of the male main insertion T-post 42, will retract into the male main insertion T-post 42. At the same time, the elastic ejection rod A621, which is movably installed inside the male elastic ejection hole 61, will be ejected. This process will increase the internal friction between the male main insertion T-post 42 and the female insertion T-groove 32, thereby preventing the male main insertion T-post 42 from penetrating further, thus avoiding inconvenience to the subsequent pull-out operation due to excessive force during insertion.

[0037] At the same time, the female auxiliary T-post 33 fixedly installed at the bottom of the male connector harness 3, and the female movable limiting blocks 5 installed at both ends of the male T-groove 41 will extend into the male T-groove 41. As the male main insertion T-post 42 continues to penetrate deeper into the female insertion T-groove 32, the friction between the male T-groove 41 and the female movable limiting blocks 5 installed at both ends of the female auxiliary T-post 33 will also increase, ultimately preventing both from continuing to extend inward.

[0038] Please see Figure 4-5Grooves are provided on both sides of the bottom of the female auxiliary T-post 33. The outer wall of the female movable limiting block 5 is fixedly connected to the limiting block connecting shaft 51. The outer wall of the limiting block connecting shaft 51 is movably sleeved with the limiting block outer sleeve 53. A shaft end extrusion head 52 is fixedly installed at the end of the limiting block connecting shaft 51 away from the female movable limiting block 5. The outer wall of the shaft end extrusion head 52 is movably sleeved with the inside of the limiting block outer sleeve 53. A first-stage spring 54 is attached to the side of the shaft end extrusion head 52 near the limiting block outer sleeve 53. The first-stage spring 54 is placed inside the limiting block outer sleeve 53. A sleeve end thrust block 55 is fixedly installed at the end of the limiting block outer sleeve 53 away from the shaft end extrusion head 52. A secondary elastic element mounting sleeve 56 is movably sleeved on the outer wall of 53. A secondary elastic element mounting sleeve 56 contains a secondary spring 57. The outer wall of the secondary spring 57 and the outer wall of the sleeve end thrust block 55 are in contact with each other. The circumferential outer wall of the sleeve end thrust block 55 is movably sleeved on the inner wall of the secondary elastic element mounting sleeve 56. An mounting sleeve end extension shaft 58 is fixedly installed on the outer wall of the end of the secondary elastic element mounting sleeve 56 away from the sleeve end thrust block 55. A tertiary elastic element mounting sleeve 59 is movably sleeved on the outer wall of the mounting sleeve end extension shaft 58. A tertiary elastic element mounting sleeve 59 contains a tertiary spring 510. The outer wall of the tertiary spring 510 and the outer wall of the mounting sleeve end extension shaft 58 are in contact with each other.

[0039] A female end insertion limiting protrusion 34 is fixedly installed at the end of the female end guide bevel 31 away from the male end main insertion T post 42. A female end transition guide protrusion 35 is connected to the side of the female end insertion limiting protrusion 34. A female end end limiting protrusion 36 is fixedly installed on the side of the female end transition guide protrusion 35.

[0040] In the above embodiment of the female auxiliary T-post 33, the female movable limiting block 5, which is movably installed at both ends, will be squeezed by the inner wall of the male T-groove 41 against the outer wall of the female movable limiting block 5 as it extends into the male T-groove 41. Under this squeezing action, the limiting block connecting shaft 51 and the shaft end squeezing head 52, which are fixedly connected to the outer wall of the female movable limiting block 5, will retract into the limiting block outer sleeve 53. During the retraction process, the limiting block connecting shaft 51 and the shaft end squeezing head 52 will also squeeze the first-stage spring 54 placed inside the limiting block outer sleeve 53. With the help of this squeezing effect, the female movable limiting block 5 can quickly retract and enter the female auxiliary T-post 33.

[0041] As the female auxiliary T-post 33 continues to extend into the male main insert T-post 42, the shaft end extrusion head 52 will push the primary spring 54 and the limiting block outer sleeve 53 to further contract into the secondary elastic element mounting cylinder 56. During contraction, the secondary spring 57, which is movably sleeved inside the secondary elastic element mounting cylinder 56, will be compressed. As the female auxiliary T-post 33 continues to penetrate deeper, the thrust generated by the sleeve end thrust block 55 will be transmitted to the secondary elastic element mounting cylinder 56 through the secondary spring 57, causing the secondary elastic element mounting cylinder 56 to push the mounting cylinder end extension shaft 58 to contract into the tertiary elastic element mounting sleeve 59, thereby compressing the tertiary spring 510.

[0042] When the first-stage spring 54, the second-stage spring 57, and the third-stage spring 510 are all compressed, they will generate a rebound force. This rebound force acts on the female end movable limit block 5, causing the female end movable limit block 5 to fit tightly against the inner wall of the male end T-groove 41, thereby preventing the female end auxiliary T-post 33 from going too deep into the male end T-groove 41 and providing convenience for subsequent disassembly operations.

[0043] The extrusion parameters for each are as follows:

[0044] The compression of a single-stage spring 54 is 0-2mm, corresponding to a spring force of 20-40N.

[0045] The compression of the secondary spring 57 is 2-7mm, corresponding to a spring force of 40-70N;

[0046] The compression of the three-stage spring 510 is 7-10mm, corresponding to a spring force of 70-100N.

[0047] When all three are squeezed at the same time, the combined pressure range is 130-210N, which prevents the female auxiliary T-post 33 from being unable to be pulled out of the male T-groove 41 due to excessive force.

[0048] Please see Figure 6-8 The male end main insertion T-post 42 has mounting cavities 43 at both ends, and rounded corners 44 on both sides of the mounting cavities 43. An elastic ejector rod B62 is fixedly installed on the outer wall of the male end movable limiting block 6. An ejector rod buffer spring 63 is movably sleeved on the outer wall of the elastic ejector rod B62. A gas extrusion piston 64 is fixedly installed on the end of the elastic ejector rod B62 away from the male end movable limiting block 6. A gas storage box 65 is movably sleeved on the outer wall of the gas extrusion piston 64. The outer wall of the gas storage box 65 is embedded in the interior of the male end main insertion T-post 42. A gas delivery pipe 66 is fixedly installed on one side of the gas storage box 65. A gas pressure cylinder 68 is fixedly installed on the outer wall of the gas delivery pipe 66. A pressure push block 67 is movably sleeved inside the gas pressure cylinder 68. The outer wall of the pressure push block 67 is fixedly connected to the outer wall of the elastic ejector rod A621. The gas pressure cylinder 68 and the gas delivery pipe 66 are both embedded in the interior of the male end main insertion T-post 42.

[0049] When the outer wall of the male end T-groove 41 in the above embodiment is embedded and installed with the interior of the female end T-groove 32, since both ends of the female end T-groove 32 are provided with female end guide bevels 31 and the included angle of the female end guide bevels 31 is thirty degrees, this design makes the opening of the female end T-groove 32 funnel-shaped.

[0050] When the male main insertion T-post 42 and the female insertion T-slot 32 are inserted into each other, the male main insertion T-post 42 can quickly extend into the interior of the female insertion T-slot 32 with the help of the flared guiding effect of the female end guide bevel 31. As the insertion depth increases, the male end movable limiting blocks 6, which are movably installed inside both ends of the male main insertion T-post 42, will move upward along the female end guide bevel 31. When the male end movable limiting block 6 moves to the female end insertion limiting protrusion 34, it will be squeezed by the female end insertion limiting protrusion 34.

[0051] During the extrusion process, the male end movable limiting block 6 retracts into the mounting cavity 43. During the retraction, the elastic ejector rod B62, which is fixedly connected to the outer wall of the male end movable limiting block 6, pushes the gas extrusion piston 64 to extend into the gas storage box 65. During this extension process, the ejector rod buffer spring 63, which is movably sleeved on the outer wall of the elastic ejector rod B62, is subjected to initial extrusion. At the same time, the action of the gas extrusion piston 64 retracting into the gas storage box 65 will extrude the gas stored in the gas storage box 65, so that the gas can be delivered into the gas delivery pipe 66 and finally stored in the gas pressure cylinder 68.

[0052] When the male end movable limit block 6 continues to move through the female end insertion limit protrusion 34 and the female end transition guide protrusion 35 to the female end end limit protrusion 36, it will push the elastic ejector rod B62 and the gas extrusion piston 64 to move together to the bottom of the gas storage box 65. At this time, the gas stored inside the gas storage box 65 will be completely squeezed out. This process will increase the gas density stored in the gas pressure cylinder 68, thereby pushing the pressure push block 67 to move upward. After the pressure push block 67 moves upward, its fixedly connected elastic ejector rod A621 will extend out from the inside of the male end elastic ejector hole 61, forming outward pressure on both sides of the female end insertion T groove 32.

[0053] Ultimately, the friction between the male main plug T-post 42 and the female plug T-groove 32 will increase, thereby avoiding the problem of the two being too tightly locked due to excessive pressure.

[0054] Working principle:

[0055] Step 1: Guide the connection to avoid jamming.

[0056] In the initial stage of connector operation, the male connector harness 3, which is fixedly installed inside the male housing 1 of the connector, and the female connector harness 4, which is fixedly installed inside the female housing 2 of the connector, are mutually plugged in. Since the female plug T-slot 32 opened inside the male connector harness 3 has female guide bevels 31 at both ends of its outlet, and the included angle of the female guide bevels 31 is 30 degrees, the opening of the female plug T-slot 32 is flared. This flared structure can guide the male main plug T-post 42 fixedly installed on the top of the female connector harness 4, so that the male main plug T-post 42 can be quickly inserted into the female plug T-slot 32 through the female guide bevels 31. This effectively avoids jamming due to inaccurate positioning during the plugging process and lays the foundation for stable plugging in the future.

[0057] Step Two: Enhanced Dual Friction Initially Limits Deep Penetration

[0058] As the male main insertion T-post 42 continues to penetrate deeper into the female insertion T-groove 32, the male movable limiting blocks 6, which are movably installed at both ends of the male main insertion T-post 42, will move inward along the female guide inclined opening 31. When they reach the female insertion limiting protrusion 34, they are squeezed and contracted into the mounting cavity 43. During the contraction process, the elastic ejection rod B62 fixed on the outer wall of the male movable limiting block 6 will push the gas extrusion piston 64 to extend into the gas storage box 65. At the same time, the elastic ejection rod A621 will be ejected from the male elastic ejection hole 61, forming outward pressure on both sides of the female insertion T-groove 32, causing the male main insertion T-post 42 to contact the female insertion T-groove 32. The internal friction increases; on the other hand, the female auxiliary T-post 33 fixed at the bottom of the male connector harness 3 will extend into the male T-groove 41 inside the female connector harness 4. The female movable limiting blocks 5 movably installed at both ends of the female auxiliary T-post 33 are squeezed by the inner wall of the male T-groove 41, which drives the extrusion head 52 at the shaft end of the limiting block connecting shaft 51 to retract into the inner sleeve 53 of the limiting block. As the female auxiliary T-post 33 goes deeper, the friction between the male T-groove 41 and the female movable limiting block 5 also increases. The enhancement of the double friction can initially prevent the male main insertion T-post 42 and the female auxiliary T-post 33 from going deeper, avoiding inconvenience to subsequent operations due to excessive insertion force.

[0059] Step 3: Elastic feedback and gas compression work together to precisely control the insertion force.

[0060] As the male-end main T-post 42 and the female-end auxiliary T-post 33 continue to penetrate deeper, the structure further triggers a feedback mechanism: On the female-end auxiliary T-post 33 side, the shaft-end pressing head 52 pushes the first-stage spring 54, the limiting block outer sleeve 53, towards the second-stage elastic element mounting sleeve 56, compressing the second-stage spring 57. Subsequently, the sleeve-end thrust block 55, through the second-stage spring 57, pushes the second-stage elastic element mounting sleeve 56, causing the mounting sleeve-end extension shaft 58 to retract towards the third-stage elastic element mounting sleeve 59 and compress the third-stage spring 510. The first-stage spring 54, second-stage spring 57, and third-stage spring 510, after being compressed, generate a rebound force, causing the female-end movable limiting block 5 to tightly adhere to the inner wall of the male-end T-groove 41; on the male-end main T-post 42 side, the male end... When the movable limiting block 6 continues to move through the female end insertion limiting protrusion 34 and the female end transition guide protrusion 35 to the female end end limiting protrusion 36, it will push the elastic ejector rod B62 and the gas compression piston 64 to the bottom of the gas storage box 65, completely squeezing the gas in the gas storage box 65 into the gas delivery pipe 66 and storing it in the gas pressure cylinder 68. This increases the gas density in the gas pressure cylinder 68, pushing the pressure pushing block 67 upward, further increasing the pressure of the elastic ejector rod A621 on the female end insertion T-groove 32. Finally, the friction and rebound forces of the male end main insertion T-post 42 and the female end insertion T-groove 32, and the female end auxiliary T-post 33 and the male end T-groove 41 work together to form a comprehensive pressure range of 130-210N. This allows for precise control of the insertion force, preventing the male end main insertion T-post 42 and the female end insertion T-groove 32, and the female end auxiliary T-post 33 and the male end T-groove 41 from being too tightly locked due to excessive pressure, ensuring convenient subsequent disassembly operations.

[0061] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0062] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. An automotive wire harness connector with controllable insertion force, comprising a female connector housing (2) and a male connector housing (1), characterized in that: The male connector shell (1) is internally fixedly installed with a male connecting wire harness (3), and the female connector shell (2) is internally fixedly installed with a female connecting wire harness (4), which is adaptively installed with the male connecting wire harness (3); The male connecting wire harness (3) internally comprises a female end guiding bevel (31), a female end plug-in T slot (32) and a female end auxiliary T column (33), the male connecting wire harness (3) is internally provided with the female end plug-in T slot (32), the female end plug-in T slot (32) is provided with the female end guiding bevel (31) at both ends of the outlet, and the bottom of the male connecting wire harness (3) is fixedly installed with the female end auxiliary T column (33), both ends of the female end auxiliary T column (33) are internally movably installed with female end movable limiting blocks (5); The female connecting wire harness (4) is internally provided with a male end T slot (41), the top of the female connecting wire harness (4) is fixedly installed with a male end main plug-in T column (42), both ends of the male end main plug-in T column (42) are movably installed with male end movable limiting blocks (6), one end of the male end main plug-in T column (42) close to the male end movable limiting blocks (6) is provided with a male end elastic ejection hole (61), and the male end elastic ejection hole (61) is movably installed with an elastic ejection rod A (621) internally; The bottom of the female end auxiliary T column (33) is provided with grooves on both sides, the outer wall of the female end movable limiting block (5) is fixedly connected with a limiting block connecting shaft (51), the outer wall of the limiting block connecting shaft (51) is movably sleeved with a limiting block outer sleeve (53), one end of the limiting block connecting shaft (51) away from the female end movable limiting block (5) is fixedly installed with a shaft end extrusion head (52), the outer wall of the shaft end extrusion head (52) and the inner wall of the limiting block outer sleeve (53) are movably sleeved, one side of the shaft end extrusion head (52) close to the limiting block outer sleeve (53) is connected with a first spring (54) in abutment, the first spring (54) is arranged in the limiting block outer sleeve (53), and one end of the limiting block outer sleeve (53) away from the shaft end extrusion head (52) is fixedly installed with a sleeve end thrust block (55); One end of the female end guiding bevel (31) away from the male end main plug-in T column (42) is fixedly installed with a female end plug-in limiting protrusion (34), the female end plug-in limiting protrusion (34) is connected with a female end transition guiding protrusion (35) on the side, and the female end transition guiding protrusion (35) is fixedly installed with a female end terminal limiting protrusion (36) on the side.

2. The wire harness connector of claim 1, wherein: The outer wall of the limiting block outer sleeve (53) is movably sleeved with a second elastic element mounting cylinder (56), the second elastic element mounting cylinder (56) is internally arranged with a second spring (57), the outer wall of the second spring (57) and the outer wall of the sleeve end thrust block (55) are in abutment with each other, and the circumferential outer wall of the sleeve end thrust block (55) and the inner wall of the second elastic element mounting cylinder (56) are movably sleeved.

3. The wire harness connector of claim 2, wherein: The outer wall of one end of the secondary elastic member installation cylinder (56) away from the sleeve end thrust block (55) is fixedly installed with an installation cylinder end extension shaft (58), the outer wall of the installation cylinder end extension shaft (58) movably sleeves the third elastic member installation sleeve (59), the third elastic member installation sleeve (59) internally places a third spring (510), the outer wall of the third spring (510) and the outer wall of the installation cylinder end extension shaft (58) are mutually attached, and the outer wall of the third elastic member installation sleeve (59) and the outer wall of the groove are fixedly connected.

4. The wire harness connector of claim 1, wherein: The two ends of the male end main plug T column (42) are internally provided with installation cavities (43), the two sides of the installation cavity (43) are internally provided with round corners (44), the outer wall of the male end movable limiting block (6) is fixedly installed with an elastic ejection rod B (62), and the outer wall of the elastic ejection rod B (62) movably sleeves an ejection rod buffer spring (63).

5. The wire harness connector of claim 4, wherein: The outer wall of the elastic ejection rod B (62) away from the male end movable limiting block (6) is fixedly installed with a gas extrusion piston (64), the outer wall of the gas extrusion piston (64) movably sleeves a gas storage box (65), the outer wall of the gas storage box (65) is inlaidly installed in the male end main plug T column (42), one side of the gas storage box (65) is fixedly installed with a gas delivery pipe (66), the outer wall of the gas delivery pipe (66) is fixedly installed with a gas pressure cylinder (68), the inner part of the gas pressure cylinder (68) movably sleeves a pressure pushing block (67), and the outer wall of the pressure pushing block (67) and the outer wall of the elastic ejection rod A (621) are fixedly connected, wherein the gas pressure cylinder (68) and the gas delivery pipe (66) are inlaidly installed in the male end main plug T column (42).

6. The wire harness connector of claim 3, wherein: The compression amount of the first spring (54) is 0-2mm, the corresponding elastic force is 20-40N, the compression amount of the second spring (57) is 2-7mm, the corresponding elastic force is 40-70N, the compression amount of the third spring (510) is 7-10mm, and the corresponding elastic force is 70-100N, when the first spring (54), the second spring (57) and the third spring (510) are extruded at the same time, the comprehensive pressure range formed is 130-210N.

7. The wire harness connector of claim 1, wherein: The included angle of the female end guide bevel (31) is thirty degrees, which makes the opening of the female end plug T groove (32) be trumpet-shaped.

8. The wire harness connector of claim 5, wherein: The inside of the gas storage box (65) stores air.

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