A cable harness with pulling detection function

Abstract

A cable harness with a pulling detection function comprises: a cable harness, a harness connector and a pulling detection module; the harness fixture is used to fix the cable harness; the cable harness passes through a left fixing plug, a left harness fixture, a right harness fixture and a right fixing plug in sequence, and is slidably connected to the harness sleeve through the harness fixture; the pulling detection module is passed through the middle of the harness sleeve, and the pulling detection module is used to press the cable harness and press the cable harness against the inner wall of the harness sleeve; the pulling force is measured by detecting the tension of the cable harness. The pulling force detection function can ensure that the cable harness does not exceed the threshold when being pulled by an external force, thereby ensuring the stability and safety of the electrical connection.

Description

Technical Field

[0001] The invention relates to the field of electrical components, in particular to a cable harness with a pulling detection function. Background Art

[0002] Ordinary cable harnesses may break or fall off when pulled by external forces, resulting in unstable electrical connections and potential safety hazards. For charging cable harnesses, if there is a large pulling force, it is easy to cause a false connection at the plug or directly break the cable harness, which can easily cause a fire or affect charging efficiency. Therefore, realizing the pulling force detection of cable harnesses without changing the existing cable structure is a problem that needs to be solved at present. Summary of the invention

[0003] In view of the above technical problems, the present invention provides a cable harness with a pulling detection function, comprising: a cable harness, a harness connector and a pulling detection module;

[0004] The harness connector is sleeved on the outside of the cable harness; the harness connector includes a harness sleeve, a harness fixing piece and a fixing plug; the number of the harness fixing piece and the fixing plug is 2; the harness fixing piece can be slidably arranged on the inside of the harness sleeve; the fixing plug is fixedly arranged at both ends of the harness sleeve to limit the harness fixing piece; the harness fixing piece is used to fix the cable harness; the cable harness passes through the left fixing plug, the left harness fixing piece, the right harness fixing piece and the right fixing plug in sequence, and is slidably connected with the harness sleeve through the harness fixing piece;

[0005] The pulling detection module is arranged in the middle of the harness sleeve, and is used to press the cable harness to press the cable harness against the inner wall of the harness sleeve; the pulling force is measured by detecting the tension of the cable harness.

[0006] Optionally, the wiring harness sleeve is a hollow cylinder, a first through hole is provided on the bottom surface of the middle part of the wiring harness sleeve, and slide grooves extending axially along the wiring harness sleeve are provided on both sides of the wiring harness sleeve; threads are provided on the inner walls on both sides of the wiring harness sleeve; the wiring harness fixing part is a hollow cylinder, and the outer diameter of the wiring harness fixing part is smaller than the inner diameter of the wiring harness sleeve; the wiring harness fixing part includes a wiring harness fixing hole and a limiting rib; the diameter of the wiring harness fixing hole matches the outer diameter of the cable harness; the position and size of the limiting rib match the position and size of the slide groove; the fixing plug is a T-shaped plug, and the fixing plug includes a threading hole and a threaded portion; the diameter of the threading hole is larger than the outer diameter of the cable harness; the threaded portion matches the threads on both sides of the wiring harness sleeve; the pulling detection module is fixed to the wiring harness sleeve through the first through hole.

[0007] Optionally, the wiring harness sleeve is a split structure, which is divided into two parts, an upper part and an lower part, and is connected by a locking piece.

[0008] Optionally, the pulling detection module includes a pressing portion, a spring, a fixing portion and a pressure sensing portion which are sequentially arranged from top to bottom; the pressing portion passes through the spring and the fixing portion and contacts the pressure sensing portion.

[0009] Optionally, the pressing portion includes a cable pressing seat, a first annular fixing member and a guide rod; the upper side of the cable pressing seat is provided with a groove matching the outer diameter of the cable harness; the lower side of the cable pressing seat is provided with a first annular fixing member and the guide rod, and the inner diameter of the first annular fixing member is greater than the outer diameter of the guide rod;

[0010] The fixing part includes a second annular fixing part, a cylindrical fixing part and an adjusting part which are arranged in sequence from top to bottom; the size of the second annular fixing part matches the size of the first annular fixing part; a through hole is arranged in the middle of the cylindrical fixing part, and the through hole is loosely matched with the guide rod; the adjusting part is annular, and a thread is arranged on the outside thereof, and its inner diameter is larger than the outer diameter of the guide rod.

[0011] Optionally, the spacing h2 between the first annular fixing member and the second annular fixing member is smaller than the maximum axial spacing h1 of the cable harness, and the maximum axial spacing h1 is the spacing between the axis of the maximum bending part and the axis of the unbent part of the cable harness; the first annular fixing member and the second annular fixing member are both provided with electrodes, and the electrodes are connected to external elements via the pressure sensing part, and an alarm message is issued when the two electrodes are in contact.

[0012] Optionally, the pressure-sensing part includes an annular sleeve, a pressure-sensing diaphragm, a lead hole and a strain gauge; the annular sleeve is cooperatively connected with the adjusting member, and a matching thread is provided on the inner side of the annular sleeve; the pressure-sensing diaphragm is arranged in the middle of the annular sleeve, and the strain gauge is arranged on the pressure-sensing diaphragm, and its lead passes through the lead hole.

[0013] Optionally, the contact end between the guide rod and the pressure-sensitive diaphragm is a hemispherical contact head; the pressure-sensing part includes an annular sleeve, a pressure-sensitive diaphragm and a convex lens; the annular sleeve is cooperatively connected with the adjusting member, and a matching thread is provided on the inner side thereof; the pressure-sensitive diaphragm is arranged in the middle part of the annular sleeve, and the convex lens is arranged at the outer end of the annular sleeve; the annular sleeve and the pressure-sensitive diaphragm are both made of transparent materials; and a pressure-sensitive color-changing material is provided on the outer side of the hemispherical contact head.

[0014] Optionally, the cable harness is used for charging a battery; and the battery is used for powering a motorcycle or a beach car.

[0015] Compared with the prior art, the present invention has achieved the following technical effects:

[0016] 1. The harness connector and the pulling detection module can measure the pulling force without changing the cable harness structure. They have a streamlined and easy-to-adjust detection structure to improve convenience.

[0017] 2. The pulling force detection function provides pulling force detection and alarm. When the cable harness tension exceeds the set threshold, it provides a warning, thereby ensuring the stability and safety of the electrical connection; the cable harness can be customized according to the shape and installation location of the equipment, and the installation process is relatively simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the structure of a cable harness with a pulling detection function provided by one embodiment of the present invention;

[0019] Figure 2 A schematic diagram of the internal structure of a cable harness with a pulling detection function provided by one embodiment of the present invention;

[0020] Figure 3 A schematic cross-sectional view of the internal structure of a cable harness with a pulling detection function provided by one embodiment of the present invention;

[0021] Figure 4 A schematic diagram of the structure of a pulling detection module in a cable harness with a pulling detection function provided by one embodiment of the present invention;

[0022] Figure 5 A schematic cross-sectional structure diagram of a pulling detection module in a cable harness with a pulling detection function provided by one embodiment of the present invention;

[0023] Figure 6 A schematic diagram of the structure of a pressing portion in a cable harness with a pulling detection function provided by an embodiment of the present invention;

[0024] Figure 7 A schematic structural diagram of a fixing portion in a cable harness with a pulling detection function provided by one embodiment of the present invention;

[0025] Figure 8 A schematic structural diagram of a limit guide rod in a cable harness with a pulling detection function provided by one embodiment of the present invention;

[0026] Fig. 9 A schematic diagram of the structure of a cable harness with a pulling detection function provided by one embodiment of the present invention when in use;

[0027] Fig.10A schematic diagram of the structure of a cable harness with a pulling detection function connected to external components provided by an embodiment of the present invention.

[0028] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0029] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0030] like Figure 1-10 As shown, an embodiment of the present invention provides a cable harness with a pulling detection function, comprising: a cable harness 1, a harness connector 2 and a pulling detection module 3;

[0031] The harness connector 2 is sleeved on the outside of the cable harness 1; the harness connector 2 includes a harness sleeve 21, a harness fixing 22 and a fixing plug 23; the number of the harness fixing 22 and the fixing plug 23 are both 2; the harness fixing 22 is slidably arranged on the inner side of the harness sleeve 21; the fixing plug 23 is fixedly arranged at both ends of the harness sleeve 21, and is used to limit the harness fixing 22 (to prevent the harness fixing 22 from being pulled out of the harness sleeve 21); the harness fixing 22 is used to fix the cable harness 1; the cable harness 1 passes through the left fixing plug 23, the left harness fixing 22, the right harness fixing 22, and the right fixing plug 23 in sequence, and is slidably connected with the harness sleeve 21 through the harness fixing 22;

[0032] The pulling detection module 3 is inserted into the middle part of the harness sleeve 21, and is used to press the cable harness 1, so that the cable harness 1 is pressed against the inner wall of the harness sleeve 21; the pulling force is measured by detecting the tension of the cable harness 1 (the greater the pulling force, the greater the tension, and the pulling force and the tension are in a linear relationship).

[0033] Optionally, there are multiple harness connectors 2 and pulling detection modules 3 , which are arranged at different positions of the cable harness 1 .

[0034] Optionally, the wiring harness sleeve 21 is a hollow cylinder, a first through hole 211 is provided on the bottom surface of the middle part of the wiring harness sleeve 21, and two sides of the wiring harness sleeve 21 are provided with slide grooves 212 extending along the axial direction of the wiring harness sleeve 21; the inner walls of the two sides of the wiring harness sleeve 21 are provided with threads; the wiring harness fixing part 22 is a hollow cylinder, and the outer diameter of the wiring harness fixing part 22 is smaller than the inner diameter of the wiring harness sleeve 21; the wiring harness fixing part 22 includes a wiring harness fixing hole 221 and a limiting rib 222; the wiring harness fixing part The diameter of the fixed hole 221 matches the outer diameter of the cable harness 1; the position and size of the limiting rib 222 match the position and size of the slide groove 212; the fixing plug 23 is a T-shaped plug, and the fixing plug 23 includes a threading hole 231 and a threaded portion 232; the diameter of the threading hole 231 is larger than the outer diameter of the cable harness 1; the threaded portion 232 matches the threads on both sides of the harness sleeve 21; the pulling detection module 3 is fixed to the harness sleeve 21 through the first through hole 211.

[0035] Optionally, the harness fixing member 22 and the cable harness 1 are fixed to each other by bonding.

[0036] Optionally, the wiring harness sleeve 21 is a split structure, which is divided into an upper and lower part and connected by a locking member (such as the upper and lower parts are both provided with screw holes and connected by screws; or, an annular locking ring is provided on the outside, etc.).

[0037] Optionally, the pulling detection module 3 includes a pressing portion 31 , a spring 32 , a fixing portion 33 and a pressure sensing portion 34 arranged in sequence from top to bottom; the pressing portion 31 passes through the spring 32 and the fixing portion 33 and contacts the pressure sensing portion 34 .

[0038] Optionally, the pressing portion 31 includes a cable pressing seat 311, a first annular fixing member 312 and a guide rod 313; the upper side of the cable pressing seat 311 is provided with a groove matching the outer diameter of the cable harness 1; the lower side of the cable pressing seat 311 is provided with a first annular fixing member 312 and the guide rod 313, and the inner diameter of the first annular fixing member 312 is greater than the outer diameter of the guide rod 313;

[0039] The fixing part 33 includes a second annular fixing member 331, a cylindrical fixing member 332 and an adjusting member 333 arranged in sequence from top to bottom; the size of the second annular fixing member 331 matches the size of the first annular fixing member 312; a through hole is arranged in the middle of the cylindrical fixing member 332, and the through hole is clearance-matched with the guide rod 313; the adjusting member 333 is annular, and a thread is arranged on the outside thereof, and its inner diameter is larger than the outer diameter of the guide rod 313;

[0040] The pressure-sensing part 34 includes an annular sleeve 341, a pressure-sensing diaphragm 342, a lead hole 343 and a strain gauge 344; the annular sleeve 341 is cooperatively connected with the adjusting member 333, and a matching thread is provided on the inner side thereof; the pressure-sensing diaphragm 342 is arranged in the middle of the annular sleeve 341, and the strain gauge 344 is arranged on the pressure-sensing diaphragm 342, and its lead wire passes through the lead hole 343.

[0041] Optionally, the fixing portion 33 is threadedly connected to the first through hole 211 .

[0042] Optionally, the diameter of the spring 32 is larger than the diameter of the guide rod 313 and smaller than the inner diameter of the first annular fixing member 312 .

[0043] Optionally, the spacing h2 between the first annular fixing member 312 and the second annular fixing member 331 is smaller than the maximum axial spacing h1 of the cable harness 1, and the maximum axial spacing h1 is the spacing between the axis of the maximum bending part and the axis of the unbent part of the cable harness 1; the first annular fixing member 312 and the second annular fixing member 331 are both provided with electrodes, and the electrodes are connected to external elements via the pressure sensing part 34 (the pressure sensing part 34 is provided with an opening, not shown in the figure), and an alarm message is issued when the two electrodes are in contact.

[0044] Optionally, the contact end between the guide rod 313 and the pressure-sensitive diaphragm 342 is a hemispherical contact head.

[0045] Optionally, the pressure-sensing part 34 includes an annular sleeve 341, a pressure-sensitive diaphragm 342 and a convex lens (not shown); the annular sleeve 341 is cooperatively connected with the adjusting member 333, and a matching thread is provided on the inner side thereof; the pressure-sensitive diaphragm 342 is provided in the middle of the annular sleeve 341, and the convex lens is provided at the outer end of the annular sleeve 341; the annular sleeve 341 and the pressure-sensitive diaphragm 342 are both made of transparent materials; a pressure-sensitive color-changing material is provided on the outer side of the hemispherical contact head, and the detection of the pulling force is realized by the color change of the pressure-sensitive color-changing material, and the convex lens is used to amplify the color change effect.

[0046] Optionally, a connection terminal 4 is provided at one end of the cable harness 1, and a transformer module 6 is provided at the other end; the transformer module 6 is connected to a power plug 7; a processing module and a sound module are integrated inside the transformer module 6, and a display module is provided outside the transformer module 6; the processing module is electrically connected to the pulling detection module 3, the display module, and the sound module respectively; the processing module is used to analyze and process the detection data of the pulling detection module 3; the display module is used to display the pulling force borne by the cable harness 1; the sound module sends an alarm message when the pulling force exceeds a preset value.

[0047] Optionally, a protective sleeve 5 is provided on the outer side of the cable harness 1 .

[0048] Optionally, the cable harness 1 is used for charging a battery, and the connecting terminal 4 is connected to the battery; the battery is used for powering motorcycles, beach cars, etc.

[0049] The working principle of the cable harness with pulling detection function: the cable harness 1 is slidably set on the inner side of the harness casing 21 through the harness fixing part 22, and the pulling detection module 3 is installed to press the cable harness 1 against the inner wall of the harness casing 21; when the two ends of the cable harness 1 receive tension, the bending part of the cable harness 1 applies downward pressure to the pulling detection module 3, and the pressure is transmitted to the pressure sensing part 34 through the pressing part 31, and the pulling force of the cable harness 1 is measured by the resistance change of the strain gauge 344 or the color change of the hemispherical contact head. When the pulling detection module detects the pulling force of the cable harness 1, the cable harness 1 in the harness connector 2 is always in a compressed and bent state during the entire measurement process, and different degrees of pulling force can be detected by setting springs 32 with different elastic moduli.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention.

Claims

1. A cable harness with a pulling detection function, comprising: Cable harnesses, harness connectors, and pull detection modules; The harness connector is sleeved on the outside of the cable harness; the harness connector includes a harness sleeve, a harness fixing piece and a fixing plug; the number of the harness fixing piece and the fixing plug is 2; the harness fixing piece can be slidably arranged on the inside of the harness sleeve; the fixing plug is fixedly arranged at both ends of the harness sleeve to limit the harness fixing piece; the harness fixing piece is used to fix the cable harness; the cable harness passes through the left fixing plug, the left harness fixing piece, the right harness fixing piece and the right fixing plug in sequence, and is slidably connected with the harness sleeve through the harness fixing piece; The pulling detection module is arranged in the middle of the harness sleeve, and is used to press the cable harness to press the cable harness against the inner wall of the harness sleeve; the pulling force is measured by detecting the tension of the cable harness; The wiring harness sleeve is a hollow cylinder, a first through hole is provided on the bottom surface of the middle part of the wiring harness sleeve, and slide grooves extending along the axial direction of the wiring harness sleeve are provided on both sides of the wiring harness sleeve; threads are provided on the inner walls of both sides of the wiring harness sleeve; the wiring harness fixing part is a hollow cylinder, and the outer diameter of the wiring harness fixing part is smaller than the inner diameter of the wiring harness sleeve; the wiring harness fixing part includes a wiring harness fixing hole and a limiting rib; the diameter of the wiring harness fixing hole matches the outer diameter of the cable harness; the position and size of the limiting rib match the position and size of the slide groove; the fixing plug is a T-shaped plug, and the fixing plug includes a threading hole and a threaded portion; the diameter of the threading hole is larger than the outer diameter of the cable harness; the threaded portion matches the threads on both sides of the wiring harness sleeve; the pulling detection module is fixed to the wiring harness sleeve through the first through hole; The pulling detection module comprises a pressing part, a spring, a fixing part and a pressure sensing part arranged in sequence from top to bottom; the pressing part passes through the spring and the fixing part and contacts the pressure sensing part; Wherein, the wiring harness sleeve is a split structure, which is divided into two parts, upper and lower parts, and connected by a locking piece; The pressing part includes a cable pressing seat, a first annular fixing member and a guide rod; a groove matching the outer diameter of the cable harness is arranged on the upper side of the cable pressing seat; a first annular fixing member and the guide rod are arranged on the lower side of the cable pressing seat, and the inner diameter of the first annular fixing member is larger than the outer diameter of the guide rod; The fixing part includes a second annular fixing part, a cylindrical fixing part and an adjusting part which are arranged in sequence from top to bottom; the size of the second annular fixing part matches the size of the first annular fixing part; a through hole is arranged in the middle of the cylindrical fixing part, and the through hole is loosely matched with the guide rod; the adjusting part is annular, and a thread is arranged on the outside thereof, and its inner diameter is larger than the outer diameter of the guide rod.

2. The cable harness according to claim 1, characterized in that: in, The distance h2 between the first annular fixing member and the second annular fixing member is smaller than the maximum axial distance h1 of the cable harness, and the maximum axial distance h1 is the distance between the axis of the maximum bending part and the axis of the unbent part of the cable harness; the first annular fixing member and the second annular fixing member are both provided with electrodes, and the electrodes are connected to external elements via the pressure sensing part, and an alarm message is issued when the two electrodes are in contact.

3. The cable harness according to claim 2, characterized in that: in, The pressure-sensing part includes an annular sleeve, a pressure-sensing diaphragm, a lead hole and a strain gauge; the annular sleeve is cooperatively connected with the adjusting member, and a matching thread is provided on the inner side of the annular sleeve; the pressure-sensing diaphragm is arranged in the middle of the annular sleeve, and the strain gauge is arranged on the pressure-sensing diaphragm, and its lead wire passes through the lead hole.

4. The cable harness according to claim 3, characterized in that: in, The contact end between the guide rod and the pressure-sensitive diaphragm is a hemispherical contact head; the pressure-sensing part includes an annular sleeve, the pressure-sensitive diaphragm and a convex lens; the annular sleeve is cooperatively connected with the adjusting member, and a matching thread is arranged on the inner side thereof; the pressure-sensitive diaphragm is arranged in the middle part of the annular sleeve, and the convex lens is arranged at the outer end of the annular sleeve; the annular sleeve and the pressure-sensitive diaphragm are both made of transparent materials; a pressure-sensitive color-changing material is arranged on the outer side of the hemispherical contact head.

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