Composite compression-resistant flexible cable

Abstract

The invention provides a composite compression-resistant flexible cable. The composite compression-resistant flexible cable comprises an inner protective layer, an electric unit, an outer protective layer, an outer buffer assembly, an inner buffer assembly and a plurality of opening and closing assemblies, the outer buffer assembly is located between the outer protection layer and the inner protection layer and comprises an outer sliding part and a transverse moving part, one end of the outer sliding part is elastically connected to the first area part of the inner protection layer, and the other end of the outer sliding part is slidably connected to the outer protection layer; the inner buffering assembly comprises a supporting piece and an inner sliding piece, the inner sliding piece can slide relative to the supporting piece, one end of the inner sliding piece is elastically connected to the supporting piece, and the other end of the inner sliding piece abuts against the second area part of the inner protection layer; one end of the opening and closing assembly is slidably connected to the supporting member, and the other end of the opening and closing assembly abuts the electric unit against the inner sheath. When the outer sliding part slides towards the side close to the inner protection layer, the outer sliding part can abut against the transverse moving part to slide around the inner protection layer and provide inner pressure for the inner sliding part, and based on the inner pressure, the inner sliding part slides towards the side away from the inner protection layer and abuts against the opening and closing assembly to move towards the side away from the electric unit.

Description

Technical Field

[0001] This application relates to the field of flexible cable technology, and in particular to a composite pressure-resistant flexible cable. Background Technology

[0002] Flexible cables are often used in dynamic environments, such as those involving frequent movement, dragging, or vibration. However, current flexible cables have relatively weak compressive strength and are prone to damage when subjected to significant pressure. Summary of the Invention

[0003] This application provides a composite pressure-resistant flexible cable to solve the problem of weak pressure resistance of flexible cables in the known art.

[0004] This application provides a composite pressure-resistant flexible cable, including an inner sheath, an electrical unit, an outer sheath, an outer buffer assembly, an inner buffer assembly, and multiple opening and closing assemblies; the inner sheath has a receiving cavity; the electrical unit is located in the receiving cavity; the outer sheath is spaced apart on the outer periphery of the inner sheath; the outer buffer assembly is located between the outer sheath and the inner sheath, the outer buffer assembly includes an outer sliding member and a lateral sliding member, one end of the outer sliding member is elastically connected to a first section of the inner sheath, and the other end of the outer sliding member is slidably connected to the outer sheath; the inner buffer assembly includes a support member and an inner sliding member, the inner sliding member being slidable relative to... The support member slides, one end of the inner sliding member is elastically connected to the support member, and the other end abuts against the second region of the inner protective layer; one end of the opening and closing assembly is slidably connected to the support member, and the other end of the opening and closing assembly abuts the electrical unit against the inner protective layer; when the outer sliding member slides toward the side closer to the inner protective layer, the outer sliding member can abut against the transverse member sliding around the inner protective layer and provide internal pressure to the inner sliding member, based on the internal pressure, the inner sliding member slides toward the side away from the inner protective layer and abuts against the opening and closing assembly moving toward the side away from the electrical unit.

[0005] In one possible implementation, the second region has an elastic protrusion on the side near the outer sheath, the elastic protrusion being located on the sliding path of the transverse member, the transverse member being able to at least partially pass over the elastic protrusion and abut against the elastic protrusion to move toward the side away from the outer sheath.

[0006] In one possible implementation, the outer sliding member includes an outer sliding portion and a wedge portion, one end of the outer sliding portion is elastically connected to a first portion of the inner protective layer, and the other end of the outer sliding portion is slidably connected to the outer protective layer; Along the circumference of the inner protective layer, the wedge is connected to one side of the sliding portion, and the wedge is configured to resist the lateral movement member sliding along the circumference of the inner protective layer.

[0007] In one possible implementation, the opening and closing assembly includes an opening and closing member and a first elastic member, one end of the opening and closing member being slidably connected to the support member, the other end of the opening and closing member holding the electrical unit against the inner protective layer, and the first elastic member being configured to provide an elastic force to the opening and closing member, the elastic force being configured to move the opening and closing member toward a side away from the electrical unit.

[0008] In one possible implementation, the number of electrical units is set to be multiple, the number of opening and closing components and the number of inner sliding members are the same as the number of electrical units, and an inner sliding member is provided between any two adjacent electrical units; The opening and closing assembly includes two opening and closing parts and two first elastic elements, wherein the two first elastic elements respectively provide elastic force to the two opening and closing parts; One of the two opening and closing members is located between the first side of the electrical unit and the adjacent inner sliding member, and abuts against the first side; the other of the two opening and closing members is located between the second side of the electrical unit and the adjacent inner sliding member, and abuts against the second side.

[0009] In one possible implementation, the inner sliding member has a first inclined surface on its sidewall, and the opening and closing member has a second inclined surface on the side near the inner sliding member. The first inclined surface and the second inclined surface are arranged parallel to each other. When the inner sliding member slides, the first inclined surface abuts against the second inclined surface.

[0010] In one possible implementation, the opening / closing member is slidably connected to the support member, and the sliding direction of the opening / closing member is perpendicular to the sliding direction of the adjacent inner sliding member. The first elastic element is disposed along the sliding direction of the opening and closing element, one end of the first elastic element is elastically connected to the support element, and the other end of the first elastic element is elastically connected to the opening and closing element.

[0011] In one possible implementation, the support member includes a central portion and a plurality of extension portions, the plurality of extension portions being arranged around the outer peripheral surface of the central portion, the plurality of extension portions being arranged corresponding to a plurality of electrical units, and an extension portion being provided between any two adjacent electrical units; The inner sliding members are correspondingly disposed with the extensions, and the inner sliding members are slidably connected to their corresponding extensions.

[0012] In one possible implementation, the opening and closing members are respectively provided on opposite sides of the extension, and both opening and closing members are slidably connected to the extension. The sliding directions of the two opening and closing members are perpendicular to the sliding direction of the inner sliding member, and the two opening and closing members respectively abut against two different electrical units.

[0013] In one possible implementation, the inner sliding member includes an inner sliding portion and a support portion, one end of the inner sliding portion is elastically connected to the support portion, the support portion is connected to the other end of the inner sliding portion, and the support portion is configured to support the inner protective layer.

[0014] The composite pressure-resistant flexible cable of this application provides a buffering effect when the area corresponding to the outer sliding member is compressed. Furthermore, as the outer sliding member slides inward under pressure, it supports the lateral sliding member, which in turn causes the inner sliding member to slide away from the inner sheath. Based on the elastic connection between the inner sliding member and the support member, the external force on the composite pressure-resistant flexible cable is buffered. In addition, during the sliding process, the inner sliding member allows the opening and closing member to move away from the electrical unit, providing space for the electrical unit to move inward. This prevents external force from directly acting on the electrical unit through the inner sheath, thus improving the overall pressure resistance of the composite pressure-resistant flexible cable. Attached Figure Description

[0015] Figure 1 This is a cross-sectional schematic diagram of the composite pressure-resistant flexible cable of this application in one embodiment.

[0016] Figure 2 for Figure 1 A schematic diagram of the structure of a composite pressure-resistant flexible cable in one embodiment.

[0017] Key component symbols: 100, Composite pressure-resistant flexible cable; P1, First inclined plane; P2, Second inclined plane; P3, Arc-shaped surface; P4, Third inclined plane; P5, Fourth inclined plane; P6, Fifth inclined plane; 1, First section; 2, Second section; 10, Inner sheath; 11, Receiving cavity; 12, Receiving groove; 20, Electrical unit; 21, Conductor; 22, Insulation layer; 30, Inner buffer assembly; 31, Support; 310, Weight reduction hole; 311, Center section; 312, Extension section; 3120, Movable cavity; 3121, First slide groove; 3122, Second slide groove; 3123, First mounting section; 31 24. Third slide groove; 32. Inner sliding member; 321. Supporting part; 322. Inner sliding part; 323. Supporting part; 33. Second elastic member; 40. Opening and closing assembly; 41. Opening and closing member; 411. Main body part; 412. Second support part; 413. First support part; 4130. Second mounting part; 42. First elastic member; 50. Outer protective layer; 51. Shielding layer; 52. Shielding insulation layer; 53. Outer sheath; 60. Outer buffer assembly; 61. Outer sliding member; 611. Outer sliding part; 612. Wedge part; 62. Lateral movement member; 63. Third elastic member; 64. Guide seat; 65. Elastic protrusion.

[0018] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this application. Detailed Implementation

[0019] The following description will refer to the accompanying drawings to provide a more complete picture of the present application. The drawings illustrate exemplary embodiments of the present application. However, the present application may be implemented in many different forms and should not be construed as limited to the exemplary embodiments set forth herein. These exemplary embodiments are provided to make the present application thorough and complete, and to fully convey the scope of the present application to those skilled in the art. The same reference numerals denote the same or similar components.

[0020] The terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to limit the application. As used herein, unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “the” are intended to also include the plural forms. Furthermore, when used herein, “comprising” and / or “including” and / or “having,” integers, steps, operations, components, and / or components, but does not exclude the presence or addition of one or more other features, regions, integers, steps, operations, components, and / or groups thereof.

[0021] Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. Furthermore, unless expressly defined herein, terms such as those defined in a general dictionary should be interpreted as having the same meaning as they have in the relevant art and in the content of this application, and will not be interpreted as having an idealized or overly formal meaning.

[0022] The specific embodiments of this application will be further described in detail below with reference to the accompanying drawings.

[0023] like Figures 1 to 2 As shown, this embodiment provides a composite pressure-resistant flexible cable 100, including an inner sheath 10, an electrical unit 20, an outer sheath 50, an outer buffer assembly 60, an inner buffer assembly 30, and multiple opening and closing assemblies 40.

[0024] The inner sheath 10 is made of insulating plastic and is roughly a hollow cylindrical structure. The inner sheath 10 has a receiving cavity 11 inside. There are multiple electrical units 20, which are located in the receiving cavity 11 and are evenly spaced around the axis of the inner sheath 10.

[0025] The outer sheath 50 is spaced apart on the outer periphery of the inner sheath 10 to form a gap between the inner sheath 10 and the outer sheath 50. An outer buffer assembly 60 is located within the gap between the outer sheath 50 and the inner sheath 10. The outer buffer assembly 60 includes an outer sliding member 61 and a lateral sliding member 62. One end of the outer sliding member 61 is elastically connected to the first region 1 of the inner sheath 10, and the other end of the outer sliding member 61 is slidably connected to the outer sheath 50. The inner buffer assembly 30 includes a support member 31 and an inner sliding member 32. The inner sliding member 32 is slidable relative to the support member 31. One end of the inner sliding member 32 is elastically connected to the support member 31, and the other end abuts against the second region 2 of the inner sheath 10. One end of the opening / closing assembly 40 is slidably connected to the support member 31, and the other end of the opening / closing assembly 40 abuts the electrical unit 20 against the inner sheath 10.

[0026] When the outer sliding member 61 slides toward the side closer to the inner protective layer 10, the outer sliding member 61 can resist the sliding of the transverse member 62 around the inner protective layer 10 and provide internal pressure to the inner sliding member 32. Based on the internal pressure, the inner sliding member 32 slides toward the side away from the inner protective layer 10 and resists the opening and closing assembly 40 moving toward the side away from the electrical unit 20.

[0027] Thus, in this application, when the area corresponding to the outer sliding member 61 of the composite pressure-resistant flexible cable 100 is compressed, the outer sliding member 61 can act as a buffer. Furthermore, when the outer sliding member 61 slides inward under pressure, it can resist the lateral sliding member 62 sliding circumferentially. The lateral sliding member 62 then causes the inner sliding member 32 to slide away from the inner sheath 10. Based on the elastic connection between the inner sliding member 32 and the support member 31, the external force on the composite pressure-resistant flexible cable 100 can be buffered. In addition, during the sliding process, the inner sliding member 32 can cause the opening / closing member 41 to move away from the electrical unit 20, thereby providing space for the electrical unit 20 to move inward. This prevents external force from directly acting on the electrical unit 20 through the inner sheath 10 and causing damage, thereby improving the overall pressure resistance of the composite pressure-resistant flexible cable 100.

[0028] Please combine Figures 1 to 2 In one embodiment, the second region 2 has an elastic protrusion 65 protruding on the side near the outer protective layer 50. The elastic protrusion 65 is located on the sliding path of the transverse member 62. The transverse member 62 can at least partially pass over the elastic protrusion 65 and abut against the elastic protrusion 65 to move away from the outer protective layer 50.

[0029] The outer buffer assembly 60 includes a plurality of outer sliding members 61, the number of which is the same as the number of electrical units 20, and the plurality of outer sliding members 61 and the plurality of electrical units 20 are arranged in a one-to-one correspondence. Along the radial direction of the inner protective layer 10, the outer sliding members 61 and the electrical units 20 respectively abut against opposite sides of the same first region 1. In this embodiment, the number of electrical units 20 is set to four.

[0030] It is understood that in other embodiments, the number of electrical units 20 may be three or five, or other numbers. The specific number of electrical units 20 can be selected according to actual needs.

[0031] The number of elastic protrusions 65 is set to be multiple, and the number of elastic protrusions 65 is the same as the number of electrical units 20. Along the circumference of the inner protective layer 10, multiple outer sliding members 61 are equally spaced, and multiple elastic protrusions 65 are equally spaced, with an elastic protrusion 65 located at the midpoint between any two adjacent outer sliding members 61. Two transverse moving members 62 are provided between any adjacent outer sliding members 61 and elastic protrusions 65. Along the circumference of the inner protective layer 10, the outer sliding members 61, the two transverse moving members 62, and the elastic protrusions 65 abut against each other.

[0032] It is understood that in other embodiments, the number of transverse members 62 between any adjacent outer sliding member 61 and elastic protrusion 65 may also be three or more, and the specific number can be selected according to actual design requirements.

[0033] In this embodiment, the outer sliding member 61 includes an outer sliding portion 611 and a wedge portion 612. One end of the outer sliding portion 611 is elastically connected to the first region 1 of the inner protective layer 10, and the other end of the outer sliding portion 611 is slidably connected to the outer protective layer 50. Along the circumferential direction of the inner protective layer 10, the wedge portion 612 is connected to one side of the sliding portion, and the wedge portion 612 is configured to resist the lateral sliding member 62 sliding along the circumferential direction of the inner protective layer 10.

[0034] The inner sheath 10 has four first sections 1 and four second sections 2. The four first sections 1 are corresponding to four outer sliding members 61, and the four second sections 2 are corresponding to four elastic protrusions 65. Each first section 1 has a guide seat 64 on the side near the outer sheath 50. The guide seat 64 is connected to the first section 1 and is made of insulating plastic. The guide seat 64 has a guide hole that extends through the guide seat 64 along the radial direction of the inner sheath 10. One end of the outer sliding member 611 abuts against the side of the outer sheath 50 near the inner sheath 10, and the other end of the outer sliding member 611 slidably passes through the guide hole. There are two wedges 612, which are connected to opposite sides of the outer sliding member 611 along the circumference of the inner sheath 10. Furthermore, the surface of the wedge 612 near the outer protective layer 50 is attached to the inner wall of the outer protective layer 50 to support the outer protective layer 50, and the wedge 612 reduces the pressure generated when the outer sliding part 611 is subjected to pressure from the outer protective layer 50.

[0035] Along the circumference of the inner sheath 10, the surface of the wedge portion 612 away from the outer sliding portion 611 is designated as a third inclined surface P4. Along the sliding direction of the outer sliding portion 611, the third inclined surface P4 extends obliquely from its end near the outer sheath 50 toward the side of the outer sliding portion 611 and toward the inner sheath 10. The cross-sectional shape of the transverse member 62 is a parallelogram, and the interior of the transverse member 62 can be hollow to improve the flexibility of the flexible cable. The side of the transverse member 62 near the outer sheath 50 is attached to the outer sheath 50, and the side of the transverse member 62 near the inner sheath 10 is attached to the inner sheath 10. Along the circumference of the inner sheath 10, the surface of the transverse member 62 near the wedge portion 612 it abuts is designated as a fourth inclined surface P5, the fourth inclined surface P5 being parallel to the third inclined surface P4, and the third inclined surface P4 abutting against the fourth inclined surface P5. The surface of the transverse member 62 away from the wedge portion 612 it abuts is designated as the fifth inclined surface P6. The fifth inclined surface P6 is parallel to the fourth inclined surface P5, and the fifth inclined surface P6 abuts against the fourth inclined surface P5 of its adjacent transverse member 62.

[0036] The wedge portion 612 and the transverse member 62 form a wedge structure through the third inclined surface P4 and the fourth inclined surface P5. When the outer sliding member 61 is subjected to external force and moves toward the side of the inner protective layer 10, the wedge portion 612 can abut against the transverse members 62 on both sides, thereby causing the transverse members 62 to move along the circumference of the inner protective layer 10 toward the side away from the wedge portion 612. The transverse member 62 then abuts against its adjacent transverse member 62 and moves toward the elastic protrusion 65, thereby causing the transverse member 62 to move to partially pass over the elastic protrusion 65.

[0037] Two transverse members 62 are spaced apart on both sides of the elastic protrusion 65 to form a space between them for the elastic protrusion 65 to be accommodated. The elastic protrusion 65 is made of elastic plastic. Along the radial direction of the inner protective layer 10, one side of the elastic protrusion 65 is connected to the outer wall of the inner protective layer 10, and the other side is spaced apart from the outer protective layer 50, so that a space for the transverse members 62 to move can be formed between the elastic protrusion 65 and the outer protective layer 50. The surface of the elastic protrusion 65 away from the inner protective layer 10 is a slope, so that the transverse members 62 that abut against the elastic protrusion 65 can pass over the elastic protrusion 65 along the slope. At the same time, when the transverse members 62 pass over the elastic protrusion 65, the transverse members 62 apply pressure to the elastic protrusion 65, thereby causing the elastic protrusion 65 and the second section 2 in which it is located to move away from the outer protective layer 50, thereby applying pressure to the inner sliding member 32. In addition, the elastic material of the elastic protrusion 65 can also effectively buffer the pressure from the transverse members 62.

[0038] It is worth noting that, along the radial direction of the inner sheath 10, a portion of the transverse member 62 adjacent to the elastic protrusion 65 is always located in the space of the elastic protrusion 65 near the outer sheath 50 and abuts against the outer sheath 50, so that when the portion of the outer sheath 50 corresponding to the elastic protrusion 65 is pressed, the pressure can be applied to the transverse member 62, thereby causing the transverse member 62 to press the elastic protrusion 65 inward, thereby causing the elastic protrusion 65 and the second portion 2 thereon to move away from the outer sheath 50, thereby applying pressure to the inner sliding member 32.

[0039] In this embodiment, a plurality of receiving grooves 12 are provided on the side of the first region 1 near the outer sheath 50. The receiving grooves 12 are formed by recessing inward from the side of the first region 1 near the outer sheath 50. The outer buffer assembly 60 also includes a plurality of third elastic elements 63, which are correspondingly arranged with a plurality of outer sliding elements 61. Each receiving groove 12 is used to install one third elastic element 63. One end of the third elastic element 63 is located in the receiving groove 12 and connected to the bottom wall of the receiving groove 12, and the other end of the third elastic element 63 is elastically connected to the end of the outer sliding part 611 away from the outer sheath 50. The third elastic element 63 is a compression spring, so that the third elastic element 63 always provides an elastic force to the outer sliding part 61 to move towards one side of the outer sheath 50, thereby making the outer sliding part 61 fit against the outer sheath 50 and support the outer sheath 50. In addition, the third elastic element 63 can also buffer the pressure on the outer sliding part 61, thereby improving the compressive strength of the flexible cable.

[0040] Please combine Figures 1 to 2 In one embodiment, the opening / closing assembly 40 includes an opening / closing member 41 and a first elastic member 42. One end of the opening / closing member 41 is slidably connected to the support member 31, and the other end of the opening / closing member 41 holds the electrical unit 20 against the inner sheath 10. On the one hand, the electrical unit 20 is fixed in position by clamping it between the opening / closing member 41 and the inner sheath 10; on the other hand, the electrical unit 20 supports the inner sheath 10 to ensure the roundness of the entire pressure-resistant flexible cable. The first elastic member 42 is configured to provide an elastic force to the opening / closing member 41, and the elastic force is configured to move the opening / closing member 41 away from the electrical unit 20.

[0041] When the inner sliding member 32 slides away from the inner sheath 10, it provides a movement space. Based on elastic force, the opening / closing member 41 can move away from the electrical unit 20 within this movement space, thereby providing space for the electrical unit 20 to move inward (i.e., away from the inner sheath 10). When the pressure-resistant flexible cable is no longer subjected to external force, the inner sliding member 32 slides towards the inner sheath 10. The inner sliding member 32 can abut against its adjacent opening / closing member 41, which is used to make the opening / closing member 41 abut against the electrical unit 20 and move it towards the inner sheath 10, thereby causing the electrical unit 20 to reset and continue to abut against the inner sheath 10.

[0042] Please combine Figures 1 to 2 In one embodiment, the support member 31 is made of insulating plastic and includes a central part 311 and a plurality of extensions 312. The plurality of extensions 312 are arranged around the outer peripheral surface of the central part 311. The plurality of extensions 312 are correspondingly arranged with a plurality of electrical units 20, and an extension 312 is provided between any two adjacent electrical units 20.

[0043] The cross-sectional shape of the central portion 311 can be circular or rectangular, and the central axis of the central portion 311 coincides with the central axis of the inner protective layer 10. Multiple extensions 312 are equally spaced around the outer peripheral surface of the central portion 311. A weight-reducing hole 310 is provided at the center of the central portion 311 to reduce the weight of the support member 31 and improve the bending performance of the support member 31.

[0044] In this embodiment, there are four extensions 312, which are arranged in a cross shape. The extension direction of any one extension 312 is parallel to a radial direction of the pressure-resistant flexible cable, so that any two adjacent extensions 312 are perpendicular to each other. There are four electrical units 20 and four opening / closing components 40, and each electrical unit 20 is accommodated in the space between any two adjacent extensions 312.

[0045] It is understood that in other embodiments, the number of electrical units 20 may also be set to three or five or other numbers, and the specific number of electrical units 20 may be selected according to actual needs.

[0046] In this embodiment, the electrical unit 20 includes a conductor 21 and an insulating layer 22. The conductor 21 is made of conductive material such as aluminum or copper. The insulating layer 22 is made of insulating material and covers the outer periphery of the conductor 21 to provide insulation. It is worth noting that, depending on actual design requirements, the electrical unit 20 may also be provided with a shielding structure or a protective structure. The other structural components of the electrical unit 20 besides the conductor 21 and the insulating layer 22 are not limited in this application.

[0047] Please combine Figures 1 to 2 In one embodiment, the inner sliding member 32 includes an inner sliding portion 322, a support portion 323, and a resisting portion 321. One end of the inner sliding portion 322 is elastically connected to the support member 31, the support portion 323 is connected to the other end of the inner sliding portion 322, and the support portion 323 is configured to support the inner protective layer 10.

[0048] The extension portion 312 has a movable cavity 3120 inside, and a first groove 3121 is formed at the end of the extension portion 312 away from the center portion 311. The extension direction of the first groove 3121 is the same as the extension direction of the extension portion 312, and the first groove 3121 communicates with the movable cavity 3120. The extension direction of the inner sliding portion 322 is the same as the extension direction of the extension portion 312, and the inner sliding portion 322 is slidably inserted through the first groove 3121 so that the inner sliding portion 322 can slide relative to the extension portion 312.

[0049] It is worth noting that each of the four extensions 312 has a first groove 3121, and the four inner sliding members 32 are slidably partially housed in the four first grooves 3121, so that the four inner sliding members 32 can slide relative to the four extensions 312 respectively, and the sliding direction of each inner sliding member 32 is parallel to the extension direction of the extension 312 in which it is located.

[0050] The support portion 323 is located outside the movable cavity 3120, and the cross-sectional shape of the support portion 323 is approximately curved. The support portion 323 is disposed in contact with the inner circumferential surface of the inner sheath 10. Along the circumference of the inner sheath 10, the two ends of the support portion 323 are respectively disposed close to the two adjacent electrical units 20, so that the entire inner circumferential surface of the inner sheath 10 can be supported to a large extent by the four support portions 323 and the four electrical units 20, thereby ensuring the roundness of the entire pressure-resistant flexible cable. In addition, the support portion 323 is disposed in contact with the inner sheath 10, and the support portion 323 has a large arc length, so that when the inner sheath 10 is subjected to external force, the pressure can be evenly distributed on the support portion 323, avoiding stress concentration that could cause damage to the inner sheath 10 by the inner sliding member 32.

[0051] In particular, the material used for the support part 323 has a certain degree of elasticity, so that the support part 323 can undergo corresponding elastic deformation with the inner protective layer 10 under pressure deformation.

[0052] In this embodiment, the inner buffer assembly 30 further includes a plurality of second elastic members 33, which are correspondingly arranged with a plurality of inner sliding members 32. One end of the second elastic member 33 is elastically connected to the support member 31, and the other end of the second elastic member 33 is elastically connected to the end of the inner sliding member 32 away from the inner protective layer 10.

[0053] The abutment portion 321 is located within the movable cavity 3120, and is connected to one end of the inner sliding portion 322 that extends into the movable cavity 3120. The second elastic member 33 is located within the movable cavity 3120, and its extension direction is parallel to the extension direction of the extension portion 312 in which it is located. One end of the second elastic member 33 is connected to the cavity wall of the movable cavity 3120 on the side away from the inner protective layer 10, and the other end of the second elastic member 33 is connected to the end of the abutment portion 321 away from the inner sliding portion 322.

[0054] The second elastic element 33 is a compression spring or similar component. The second elastic element 33 continuously provides an elastic force to the inner sliding element 32, causing it to move towards the inner sheath 10. This allows the support portion 323 to abut against the inner circumferential surface of the inner sheath 10. When the inner sliding element 32 is subjected to an external force and moves away from the inner sheath 10, the second elastic element 33 is continuously compressed. After the external force is removed, the second elastic element 33 pushes the inner sliding element 32 back to its original position, and the inner sheath 10 is also supported by the support portion 323 and returns to its original shape. Simultaneously, when the inner sliding element 32 is subjected to an external force, the second elastic element 33 can also buffer the external force, improving the compressive strength of the pressure-resistant flexible cable.

[0055] Please combine Figures 1 to 2 In one embodiment, a plurality of inner sliding members 32 are correspondingly disposed with a plurality of extensions 312, and the inner sliding members 32 are slidably connected to their corresponding extensions 312. Opening and closing members 41 are respectively provided on opposite sides of the extensions 312, and both opening and closing members 41 are slidably connected to the extensions 312, and the sliding direction of the two opening and closing members 41 is perpendicular to the sliding direction of the inner sliding members 32, and the two opening and closing members 41 respectively abut against two different electrical units 20.

[0056] The opening and closing assembly 40 includes two opening and closing members 41 and two first elastic members 42, each of which provides an elastic force to the two opening and closing members 41. One of the two opening and closing members 41 is located between a first side of the electrical unit 20 and a nearby inner sliding member 32, and abuts against the first side. The other of the two opening and closing members 41 is located between a second side of the electrical unit 20 and a nearby inner sliding member 32, and abuts against the second side.

[0057] Four opening and closing components 40 are correspondingly arranged with four extensions 312. Along a direction perpendicular to the extension direction of the extensions 312, two opening and closing pieces 41 of the same opening and closing component 40 are located on opposite sides of their corresponding extensions 312, that is, the two opening and closing pieces 41 of the same opening and closing component 40 abut against different electrical units 20. The two adjacent opening and closing pieces 41 of two adjacent opening and closing components 40 abut against the same electrical unit 20 to ensure the stability of the electrical unit 20 when it is abutted against the inner protective layer 10.

[0058] The opening / closing component 41 includes a main body 411, a first branch 413, and a second branch 412. The main body 411 is located between adjacent electrical units 20 and extensions 312, and is generally arranged along the extending direction of the extension 312. Along a direction perpendicular to the extending direction of the extension 312, the main body 411 has an arcuate surface P3 on the side near the electrical unit 20, which can fit against the surface of the electrical unit 20. The first branch 413 and the second branch 412 are connected to the side of the main body 411 near the extension 312. The first branch 413 and the second branch 412 are spaced apart along the extending direction of the extension 312.

[0059] The arc-shaped surfaces P3 of the two opening and closing parts 41 are set approximately vertically, and the arc-shaped surfaces P3 of the two opening and closing parts 41 respectively abut against the two ends of the side of the electrical unit 20 away from the inner sheath 10, so as to ensure the positional stability of the electrical unit 20 when the pressure-resistant flexible cable is not subjected to external force.

[0060] In this embodiment, the opening / closing member 41 is slidably connected to the support member 31, and the sliding direction of the opening / closing member 41 is perpendicular to the sliding direction of the adjacent inner sliding member 32. The side wall of the inner sliding member 32 is provided with a first inclined surface P1, and the side of the opening / closing member 41 near the inner sliding member 32 is provided with a second inclined surface P2. The first inclined surface P1 and the second inclined surface P2 are arranged parallel to each other. When the inner sliding member 32 slides, the first inclined surface P1 abuts against the second inclined surface P2.

[0061] Along a direction perpendicular to the extension direction of the extension 312, second sliding grooves 3122 are provided on opposite sides of the extension 312. The extension direction of the second sliding grooves 3122 is perpendicular to the extension direction of the extension 312, and the second sliding grooves 3122 communicate with the movable cavity 3120. One end of the second branch 412 is connected to the main body 411, and the other end of the second branch 412 is slidably inserted through the second sliding groove 3122 so that the second branch 412 can slide relative to the extension 312. The end of the second branch 412 away from the main body 411 extends into the movable cavity 3120 and abuts against the abutment part 321.

[0062] The cross-sectional shape of the supporting part 321 is approximately an isosceles trapezoid. Along a direction perpendicular to the extension direction of the inner sliding part 322, first inclined surfaces P1 are provided on opposite sides of the supporting part 321, symmetrically arranged with respect to the central cross-section of the extension part 312. A second inclined surface P2 is provided at one end of the second branch 412 of the two adjacent opening / closing members 41 of the extension part 312 where the inner sliding part 322 is located, extending into the movable cavity 3120. The two second inclined surfaces P2 are corresponding to the two first inclined surfaces P1, and are parallel to their corresponding first inclined surfaces P1, so that the two first inclined surfaces P1 of the inner sliding member 32 simultaneously abut against the two second inclined surfaces P2 on both sides, thereby enabling the inner sliding member 32 to simultaneously abut against its two adjacent opening / closing members 41. The abutment of the first inclined surfaces P1 and the second inclined surfaces P2 allows the supporting part 321 and the second branch 412 to form a wedge structure.

[0063] The first inclined surface P1 is inclined from its end near the inner protective layer 10 toward the center 311 and toward the adjacent opening and closing member 41.

[0064] Thus, when the inner sliding member 32 slides toward the center portion 311 along the extension direction of the extension portion 312, due to the setting of the first inclined surface P1, there is a certain amount of movement space between the opening and closing member 41 and the supporting portion 321 in the direction perpendicular to the sliding direction of the inner sliding member 32. As a result, the opening and closing member 41 slides toward one side of the inner sliding member 32 under the action of the first elastic member 42, thereby moving the opening and closing member 41 away from the electrical unit 20 it supports, thus providing space for the electrical unit 20 to move toward the side away from the inner protective layer 10.

[0065] When the inner sliding member 32 slides toward the inner protective layer 10 along the extension direction of the extension portion 312, the inner sliding member 32 can resist the opening and closing members 41 on both sides to slide synchronously and in the opposite direction perpendicular to the sliding direction of the inner sliding member 32, so that the opening and closing members 41 overcome the elastic force provided by the first elastic member 42 and push the electric unit 20 toward the inner protective layer 10 until the electric unit 20 is reset and resists the inner protective layer 10.

[0066] In this embodiment, the first elastic member 42 is arranged along the sliding direction of the opening and closing member 41, one end of the first elastic member 42 is elastically connected to the support member 31, and the other end of the first elastic member 42 is elastically connected to the opening and closing member 41.

[0067] Along the extending direction of the extension 312, first supports 413 are spaced apart on the side of the extension 312 near the inner protective layer 10. A first mounting portion 3123 protrudes from the side of the extension 312 near the inner protective layer 10. The first mounting portion 3123 has a third sliding groove 3124, the extending direction of which is perpendicular to the extending direction of the extension 312. The first supports 413 are partially slidably accommodated within the third sliding groove 3124 to allow sliding of the first supports 413 relative to the extension 312. A second mounting portion 4130 is provided at the end of the first support 413 away from the main body 411. The second mounting portions 4130 are spaced apart on the side of the first mounting portions 3123 near the inner sliding member 32. A first elastic member 42 is located between the first mounting portion 3123 and the second mounting portion 4130, with one end of the first elastic member 42 elastically connected to the first mounting portion 3123 and the other end elastically connected to the second mounting portion 4130. The first elastic element 42 is a compression spring or similar element. The first elastic element 42 always provides an elastic force to the second mounting part 4130 to move toward the side of the inner sliding element 32, and in turn always provides an elastic force to the opening and closing part 41 to move toward the side of the inner sliding element 32. Thus, when the inner sliding element 32 slides toward the side away from the inner protective layer 10 and provides the opening and closing part 41 with the aforementioned activity space, the opening and closing part 41 can move toward the inner sliding element 32 under the action of the first elastic element 42.

[0068] It is understood that the number of first elastic elements 42 corresponding to each opening / closing element 41 can be set to two, to ensure the stability of the sliding of the opening / closing element 41 under the action of the first elastic element 42. The position of the first elastic element 42 relative to the opening / closing element 41 can be selected according to actual needs, and is not specifically limited in this application.

[0069] In this embodiment, when a second section 2 is located at the top of the flexible cable, when the upper half of the flexible cable corresponding to the second section 2 is subjected to an external force, the external force acts on the second section 2 through the transverse member 62 and the elastic protrusion 65. After the second section 2 is subjected to the force, the inner sliding member 32 slides toward the support member 31. The second elastic member 33 plays a buffering role. During the sliding process, the two opening and closing members 41 that the inner sliding member 32 supports move closer to each other, so that the two adjacent electrical units 20 of the inner sliding member 32 can have an inwardly biased activity space. When the external force acts on the upper half of the flexible cable, the first section 1 is also subjected to a force that acts on the electrical unit 20. On the one hand, the pressure is dispersed and buffered by the cooperation of the outer sliding member 61 and the transverse member 62. On the other hand, the activity space allows the electrical unit 20 to be squeezed inward by the inner sheath 10. The opening and closing members 41 provide activity space for it simultaneously, thereby avoiding a large force directly squeezing the electrical unit 20 and causing it to be damaged.

[0070] Furthermore, when the bottom end of the flexible cable is placed on the ground, and the top end of the flexible cable is subjected to force, the bottom end of the flexible cable is also subjected to force, causing its corresponding inner sliding member 32 to slide. The second elastic member 33 corresponding to the inner sliding member 32 buffers the pressure, thereby relieving the pressure on the top end of the flexible cable by providing buffering through the upper and lower second elastic members 33 simultaneously.

[0071] It is worth noting that when the other sections of the flexible cable corresponding to the second section 2 are subjected to external forces, the compressive strength mechanism is roughly the same as described above, and will not be repeated here.

[0072] When a first section 1 is located at the top of the flexible cable (or when the first section 1 is the main stress point), when the upper half of the flexible cable corresponding to the first section 1 is subjected to external force, the pressure is dispersed and buffered by the cooperation of the outer sliding member 61 and the transverse member 62. On the other hand, the inner sheath 10 is compressed by the force, causing the electrical unit 20 to move inward. The electrical unit 20 then acts on the two opening and closing members 41 that support it. The wedge structure formed between the opening and closing members 41 and the inner sliding member 32 causes the inner sliding member 32 to slide inward and compress the second elastic member 33. The second elastic member 33 can buffer the pressure. In addition, the two opening and closing members 41 are compressed by the electrical unit 20 and slide towards the side of their respective inner sliding members 32, so that the two opening and closing members 41 are generally open, thereby providing space for the electrical unit 20 to move inward. This avoids the electrical unit 20 being directly subjected to large pressure and damaged when the external force is concentrated on the section corresponding to the electrical unit 20.

[0073] It is worth noting that when the wedge structure is formed by the supporting part 321 and the second branch 412, the specific structure of the first inclined surface P1 and the second inclined surface P2, as well as the supporting part 321 and the second branch 412, can be set according to actual needs, such as the wedge angle and the friction angle, to avoid the self-locking problem, ensuring that the inner sliding member 32 can drive the second branch 412 to slide as an active element, and the second branch 412 can also drive the inner sliding member 32 to slide as an active element, so that when the inner sliding member 32 is slid by the action of the opening and closing member 41 on one side, the opening and closing member 41 on the other side of the inner sliding member 32 will not obstruct the sliding of the inner sliding member 32.

[0074] Please combine Figures 1 to 2 In one embodiment, the composite pressure-resistant flexible cable 100 further includes an outer sheath 50, which surrounds the outer periphery of the inner sheath 10. The outer sheath 50 includes structures such as a shielding layer 51, a shielding insulation layer 52, and an outer sheath 53. Furthermore, depending on the specific application scenario of the composite pressure-resistant flexible cable 100, the outer sheath 50 may also include other necessary layers for constructing the flexible cable, such as a waterproof layer and a fireproof layer.

[0075] The specific embodiments of this application have been described above with reference to the accompanying drawings. However, those skilled in the art will understand that various changes and substitutions can be made to the specific embodiments of this application without departing from the scope of this application. All such changes and substitutions fall within the scope defined by this application.

Claims

1. A composite pressure-resistant flexible cable, characterized in that, include: Inner protective layer, which has a receiving cavity inside; An electrical unit is located within the receiving cavity; An outer protective layer is provided at intervals on the outer periphery of the inner protective layer; An outer buffer assembly is located between the outer protective layer and the inner protective layer. The outer buffer assembly includes an outer sliding member and a lateral sliding member. One end of the outer sliding member is elastically connected to a first section of the inner protective layer, and the other end of the outer sliding member is slidably connected to the outer protective layer. An inner buffer assembly includes a support member and an inner sliding member, the inner sliding member being slidable relative to the support member, one end of the inner sliding member being elastically connected to the support member, and the other end abutting against a second portion of the inner protective layer; An opening and closing assembly, one end of which is slidably connected to the support member, and the other end of which holds the electrical unit against the inner protective layer; When the outer sliding member slides toward the side closer to the inner protective layer, the outer sliding member can resist the sliding of the transverse member around the inner protective layer and provide internal pressure to the inner sliding member. Based on the internal pressure, the inner sliding member slides toward the side away from the inner protective layer and resists the opening and closing assembly moving toward the side away from the electrical unit.

2. The composite pressure-resistant flexible cable as described in claim 1, characterized in that, The second region has an elastic protrusion on the side near the outer protective layer. The elastic protrusion is located on the sliding path of the transverse member. The transverse member can at least partially pass over the elastic protrusion and abut against the elastic protrusion to move away from the outer protective layer.

3. The composite pressure-resistant flexible cable as described in claim 2, characterized in that, The outer sliding member includes an outer sliding part and a wedge part. One end of the outer sliding part is elastically connected to the first section of the inner protective layer, and the other end of the outer sliding part is slidably connected to the outer protective layer. Along the circumference of the inner protective layer, the wedge is connected to one side of the sliding portion, and the wedge is configured to resist the lateral movement member sliding along the circumference of the inner protective layer.

4. The composite pressure-resistant flexible cable as described in claim 1, characterized in that, The opening and closing assembly includes an opening and closing member and a first elastic member. One end of the opening and closing member is slidably connected to the support member, and the other end of the opening and closing member holds the electrical unit against the inner protective layer. The first elastic member is configured to provide an elastic force to the opening and closing member, and the elastic force is configured to move the opening and closing member away from the electrical unit.

5. The composite pressure-resistant flexible cable as described in claim 2, characterized in that, The number of electrical units is set to be multiple, and the number of opening and closing components and the number of inner sliding members are the same as the number of electrical units. An inner sliding member is provided between any two adjacent electrical units. The opening and closing assembly includes two opening and closing parts and two first elastic elements, wherein the two first elastic elements respectively provide elastic force to the two opening and closing parts; One of the two opening and closing members is located between the first side of the electrical unit and the adjacent inner sliding member, and abuts against the first side; the other of the two opening and closing members is located between the second side of the electrical unit and the adjacent inner sliding member, and abuts against the second side.

6. The composite pressure-resistant flexible cable as described in claim 5, characterized in that, The inner sliding member has a first inclined surface on its side wall, and the opening and closing member has a second inclined surface on the side near the inner sliding member. The first inclined surface and the second inclined surface are arranged parallel to each other. When the inner sliding member slides, the first inclined surface abuts against the second inclined surface.

7. The composite pressure-resistant flexible cable as described in claim 5, characterized in that, The opening and closing member is slidably connected to the support member, and the sliding direction of the opening and closing member is perpendicular to the sliding direction of the adjacent inner sliding member. The first elastic element is disposed along the sliding direction of the opening and closing element, one end of the first elastic element is elastically connected to the support element, and the other end of the first elastic element is elastically connected to the opening and closing element.

8. The composite pressure-resistant flexible cable as described in claim 5, characterized in that, The support member includes a central portion and multiple extension portions. The multiple extension portions are arranged around the outer peripheral surface of the central portion. The multiple extension portions are arranged corresponding to the multiple electrical units. An extension portion is provided between any two adjacent electrical units. The inner sliding members are correspondingly disposed with the extensions, and the inner sliding members are slidably connected to their corresponding extensions.

9. The composite pressure-resistant flexible cable as described in claim 8, characterized in that, The extension is provided with opening and closing members on opposite sides. Both opening and closing members are slidably connected to the extension, and the sliding direction of the two opening and closing members is perpendicular to the sliding direction of the inner sliding member. The two opening and closing members abut against two different electrical units respectively.

10. The composite pressure-resistant flexible cable as described in claim 1, characterized in that, The inner sliding member includes an inner sliding portion and a support portion. One end of the inner sliding portion is elastically connected to the support portion, and the support portion is connected to the other end of the inner sliding portion. The support portion is configured to support the inner protective layer.

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