Elastic outer sheath structure and high-speed cable

Abstract

The invention provides an elastic outer sheath structure and a high-speed cable, the elastic outer sheath structure comprises a drag chain assembly and a flexible sheath, the fixed end of the drag chain assembly is used for being connected with a base, the mobile end of the drag chain assembly is used for being connected with mobile equipment, and a cavity for placing a cable is arranged in the drag chain assembly; first connecting mechanisms are arranged at the two ends of the flexible sheath, second connecting mechanisms used for being matched with the first connecting mechanisms are arranged at the movable end of the drag chain assembly and the base correspondingly, and the second connecting mechanisms are used for fixing the two ends of the flexible sheath after being matched with the first connecting mechanisms; the flexible sheath comprises an elastic protective layer and a plurality of supporting frameworks; the drag chain can solve the problems that in the prior art, in the back-and-forth movement process of the drag chain, residual engine oil and dust on a machine or the ground can be attached to the drag chain, oil substances and dust can be attached to a cable protection layer after being gathered on the drag chain, and aging of a cable is further accelerated.

Description

Technical Field

[0001] The present invention relates to the technical field of cables, and in particular to an elastic outer sheath structure and a high-speed cable. Background Art

[0002] In the fields of machine tool processing equipment, logistics transportation systems, port machinery, etc., the cables connecting these equipment need to move back and forth with the equipment repeatedly. In order to protect the cables and dielectric tubes and prevent them from being worn, pulled off, hung and scattered during movement, the cables can be placed in a chain-shaped or tubular elastic outer protective structure to effectively reduce the wear and damage of the cables and extend their service life.

[0003] When the existing drag chain cable is in use, in order to avoid the cable being damaged due to the small bending arc of the cable, the curvature of the bending part is large, resulting in the bending part being higher than other parts, so other equipment will be restricted by the height here when being installed; in order to solve the problems existing in the prior art, the invention with publication number CN118073006B discloses a drag chain cable (hereinafter referred to as prior art 1), comprising a plurality of cables arranged side by side, and the cables are divided into two groups on the left and right; an upper drag chain group and a lower drag chain group, the cables are arranged in a accommodating space formed between the upper drag chain group and the lower drag chain group, and a connecting structure for connecting the upper drag chain group and the lower drag chain group is arranged between the mutually contacting parts of the two, and at the bending part of the cable, the connecting structure between the upper drag chain group and the lower drag chain group is in a separated state, so that the distance between the upper drag chain group and the lower drag chain group at the bending part becomes larger;

[0004] Prior art 1 reduces the vertical height of the cable bending part by setting the cable bending part at an angle, thereby avoiding the use restriction caused by the bending part of the drag chain cable being too high; however, the drag chain cable is in frequent reciprocating and bending motions during the reciprocating motion of the automation equipment according to the program, and friction occurs all the time at the contact point between the cable and the drag chain, as well as between adjacent cables; and during the back-and-forth motion of the drag chain, it is bound to be sticky with the residual oil and dust on the machine or the ground. After the oil and dust gather on the drag chain, they will be contaminated on the cable protective layer, further accelerating the aging of the cable. Summary of the invention

[0005] The object of the present invention is to provide an elastic outer sheath structure and a high-speed cable, which, in actual use, can solve the problem in the prior art that during the back-and-forth movement of the drag chain, the oil and dust remaining on the machine or the ground will adhere to the drag chain, and the oil and dust will accumulate on the drag chain and contaminate the cable protective layer, further accelerating the aging of the cable.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] An elastic outer sheath structure comprises a drag chain assembly and a flexible sheath, wherein the fixed end of the drag chain assembly is used to connect with a base, the movable end of the drag chain assembly is used to connect with a mobile device, and a cavity for placing cables is provided in the drag chain assembly;

[0008] The two ends of the flexible sheath are provided with a first connection mechanism, and the moving end and the base of the drag chain assembly are respectively provided with a second connection mechanism for cooperating with the first connection mechanism, and the second connection mechanism is used to fix the two ends of the flexible sheath after cooperating with the first connection mechanism;

[0009] The flexible sheath comprises an elastic sheath and a plurality of supporting frames, and adjacent supporting frames are connected by the elastic sheath so that the flexible sheath can be extended or shortened as the drag chain assembly moves.

[0010] Preferably, the drag chain assembly includes a plurality of unit links connected together so as to be relatively rotatable, wherein the unit links include two link plates and two baffles, and the two link plates and the two baffles form a rectangular frame structure; the two link plates located on the same side of two adjacent unit links are hingedly connected.

[0011] Preferably, the first connecting mechanism includes a first connecting plate, a rotating ring and a first limiting portion, the first limiting portion is fixedly connected to the rotating ring, and a first limiting groove is arranged in the first limiting portion; the second connecting mechanism includes a second connecting plate, a fixed ring and a first limiting block, the first limiting block is used to cooperate with the first limiting groove, and slots are arranged in both the first connecting plate and the second connecting plate.

[0012] Preferably, a second limiting block is provided on the rotating ring, a second limiting portion is connected to the fixed ring, and a second limiting groove for cooperating with the second limiting block is provided in the second limiting portion.

[0013] Preferably, a rotating rod is fixedly connected to the rotating ring.

[0014] Preferably, a card plate is detachably connected to the slot provided on the second connecting plate, and the card plate is provided with a card slot for limiting the cable.

[0015] Preferably, a bending portion is provided at the bottom end of the clamping plate.

[0016] A high-speed cable comprises a plurality of conductors, an outer sheath and an elastic outer sheath structure as described in any one of claims 1 to 7, wherein the conductors comprise a conductor, an insulating layer and an inner sheath coaxially arranged in sequence from the inside to the outside, and the outer sheath is used to fix the plurality of conductors and prevent the insulating layer and the inner sheath from being damaged.

[0017] Preferably, a filling layer is provided between the inner protective layer and the outer protective layer.

[0018] Preferably, a shielding layer is coaxially arranged between the insulating layer and the protective layer.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] In the present invention, the drag chain assembly can protect the surface of the cable to prevent the cable from being worn, and at the same time, the drag chain assembly can limit the position of multiple cables passing through the cavity so that the multiple cables can be uniformly and neatly arranged on the same path, thereby preventing the cables from being entangled with each other when the mobile device moves;

[0021] The elastic protective layer can protect the drag chain assembly and the cables installed in the drag chain assembly as the drag chain assembly moves, thereby preventing oil and dust in the working environment from accumulating on the drag chain and entering the drag chain and contaminating the cable protective layer, further accelerating the aging of the cables;

[0022] By cooperating between the first connection mechanism and the second connection mechanism arranged at both ends of the flexible sheath, the flexible sheath can be conveniently and quickly installed on the drag chain assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a structural schematic diagram of the present invention.

[0025] Figure 2 It is a three-dimensional diagram of the first connecting mechanism in the present invention.

[0026] Figure 3 It is a three-dimensional diagram of the second connecting mechanism in the present invention.

[0027] Figure 4 It is a structural schematic diagram of the card board in the present invention.

[0028] Figure 5 It is a cross-sectional view of the high-speed cable described in the present invention.

[0029] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0030] 1-drag chain assembly, 2-flexible sheath, 3-cavity, 4-first connecting mechanism, 5-second connecting mechanism, 6-slot, 7-card, 8-card slot, 9-protrusion, 10-bending portion, 11-conductor;

[0031] 101-chain link plate, 102-baffle plate;

[0032] 201-elastic protective layer, 202-supporting frame;

[0033] 401-first connecting plate, 402-rotating ring, 403-first limiting portion, 404-first limiting groove, 405-second limiting block, 406-rotating rod;

[0034] 501-second connecting plate, 502-fixing ring, 503-first limiting block, 504-second limiting portion, 505-second limiting groove;

[0035] 1101- conductor, 1102- filling layer, 1103- inner sheath, 1104- outer sheath. DETAILED DESCRIPTION

[0036] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the embodiments of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0037] In the description of the embodiments of the present invention, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0038] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0039] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0040] In the embodiments of the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0041] The disclosure below provides many different embodiments or examples to implement different structures of the embodiments of the present invention. In order to simplify the disclosure of the embodiments of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the embodiments of the present invention. In addition, the embodiments of the present invention can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed.

[0042] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0043] Embodiment 1

[0044] See also Figure 1-Figure 4 This embodiment discloses a sheath structure, specifically an elastic outer sheath structure, including a drag chain component 1 and a flexible sheath 2, wherein the fixed end of the drag chain component 1 is used to connect with a base, and the movable end of the drag chain component 1 is used to connect with a mobile device, and a cavity 3 for placing a cable is provided in the drag chain component 1;

[0045] The two ends of the flexible sheath 2 are provided with a first connection mechanism 4, and the moving end and the base of the drag chain assembly 1 are respectively provided with a second connection mechanism 5 for cooperating with the first connection mechanism 4, and the second connection mechanism 5 is used to fix the two ends of the flexible sheath 2 after cooperating with the first connection mechanism 4;

[0046] The flexible sheath 2 includes an elastic sheath 201 and a plurality of support frames 202 . Adjacent support frames 202 are connected by the elastic sheath 201 so that the flexible sheath 2 can be extended or shortened as the drag chain assembly 1 moves.

[0047] In some embodiments, one end of the cable is connected to a power supply device installed on the base, and the other end of the cable is connected to the mobile device. The cable is arranged through the cavity 3, so that the drag chain assembly 1 can protect the surface of the cable to prevent the cable from being worn. At the same time, the drag chain assembly 1 limits the multiple cables passing through the cavity 3, so that the multiple cables can be uniformly and neatly arranged on the same path, preventing the cables from being entangled with each other during the movement of the mobile device; through the cooperation of the first connecting mechanism 4 and the second connecting mechanism 5 arranged at both ends of the flexible sheath 2, the flexible sheath 2 can be conveniently and quickly installed on the drag chain assembly 1, and the flexible sheath 2 can be extended or shortened as the cable and the drag chain assembly 1 move. The elastic protective layer 201 can protect the drag chain assembly 1 and the cable installed in the drag chain assembly 1 during the movement of the drag chain assembly 1, preventing oil substances and dust in the working environment from accumulating on the drag chain and entering the drag chain and contaminating the cable protective layer, further accelerating the aging of the cable.

[0048] In some embodiments, the drag chain assembly 1 includes a plurality of unit links connected together in a relatively rotatable manner, the unit links including two link plates 101 and two baffles 102, the two link plates 101 and the two baffles 102 forming a rectangular frame structure; the two link plates 101 located on the same side of two adjacent unit links are hingedly connected. In this embodiment, the drag chain assembly 1 is composed of a plurality of unit links, and the unit links can rotate freely, so that the drag chain assembly 1 can flexibly adapt to various movement and bending requirements. The bottom end of the link plate 101 is provided with a card slot 8, and the baffle 102 installed at the top of the link plate 101 is provided with a buckle at the bottom end, and the baffle 102 installed at the top of the link plate 101 can be detachably installed on the link plate 101 through the buckle, so as to inspect and replace the cables placed in the cavity 3.

[0049] In some embodiments, the first connection mechanism 4 includes a first connection plate 401, a rotating ring 402 and a first limiting portion 403, wherein the first limiting portion 403 is fixedly connected to the rotating ring 402 and a first limiting groove 404 is provided in the first limiting portion 403; the second connection mechanism 5 includes a second connection plate 501, a fixed ring 502 and a first limiting block 503, wherein the first limiting block 503 is used to cooperate with the first limiting groove 404, and a slot 6 is provided in both the first connection plate 401 and the second connection plate 501. When the first connection mechanism 4 and the second connection mechanism 5 need to be connected, the rotating ring 402 is rotated so that the first limiting block 503 fixedly connected to the fixed ring 502 can move into the first limiting groove 404 as the rotating ring 402 rotates, thereby enabling the rotating ring 402 to be connected to the fixed ring 502.

[0050] In some embodiments, the rotating ring 402 is provided with a second limit block 405, the fixed ring 502 is connected with a second limit portion 504, and the second limit portion 504 is provided with a second limit groove 505 for cooperating with the second limit block 405. During the rotation of the rotating ring 402, the first limit block 503 fixedly connected to the fixed ring 502 can move into the first limit groove 404 as the rotating ring 402 rotates, and the second limit block 405 fixedly connected to the rotating ring 402 can move into the second limit groove 505 as the rotating ring 402 rotates; the fixed ring 502 and the rotating ring 402 can achieve double locking through the cooperation between the first limit block 503 and the first limit groove 404 and the cooperation between the second limit block 405 and the second limit groove 505. Thereby further increasing the stability of the first connection mechanism 4 and the second connection mechanism 5 after being connected; the first limit block 503 and the second limit block 405 are both provided with guiding slopes, and the guiding slopes are respectively in contact with the first limit part 403 and the second limit part 504, so that the first limit part 403 and the second limit part 504 move toward each other until the fixed ring 502 is tightly pressed against the rotating ring 402, thereby ensuring that the first connection mechanism 4 is clamped on the second connection mechanism 5.

[0051] In some embodiments, a rotating rod 406 is fixedly connected to the rotating ring 402. The rotating rod 406 can be easily driven to rotate the rotating ring 402.

[0052] In some embodiments, a card plate 7 is detachably connected to the slot 6 provided on the second connecting plate 501, and a card slot 8 for limiting the position of the cable is provided on the card plate 7. A groove is provided on the second connecting plate 501, and a protrusion 9 for cooperating with the groove is provided on the card plate 7. Through the cooperation between the protrusion 9 and the groove, the card plate 7 can be detachably installed in the slot 6 provided on the second connecting plate 501. Through the card slot 8 provided on the card plate 7, multiple cables placed in the cavity 3 can be further limited to prevent the cables from being entangled with each other during the movement of the mobile device.

[0053] In some embodiments, a bending portion 10 is provided at the bottom end of the card plate 7. After the card plate 7 is installed in the slot 6 provided on the second connecting plate 501, the bending portion 10 contacts the baffle 102 installed at the bottom end of the link plate 101. The bending portion 10 can increase the contact area between the card plate 7 and the drag chain assembly 1, so that the card plate 7 is installed more stably, and the card plate 7 is prevented from falling off from the slot 6 provided on the second connecting plate 501 during the movement of the drag chain.

[0054] Embodiment 2

[0055] See also Figure 5 , this embodiment discloses a high-speed cable, comprising a plurality of conductors 11, an outer sheath 1104 and an elastic outer sheath structure as described in any one of claims 1 to 7, wherein the conductor 11 comprises a conductor 1101, an insulating layer and an inner sheath 1103 coaxially arranged from the inside to the outside, and the outer sheath 1104 is used to fix the plurality of conductors 1101 and prevent the insulating layer and the inner sheath 1103 from being damaged. In this embodiment, each conductor 11 is formed by twisting a plurality of metal copper wires or aluminum wires, and the insulating layer is a PE insulating layer used to prevent current from leaking from the conductor 1101 to the outside, causing a short circuit and electric shock risk, and the inner sheath 1103 is used to tightly wrap around the outside of the insulating layer to ensure the integrity and performance of the insulating layer, thereby extending the service life of the cable; the outer sheath 1104 is used to wrap and fix the plurality of conductors 11 to prevent the insulating layer and the inner sheath 1103 from being mechanically damaged by the outside, such as scratches, wear or extrusion.

[0056] In some embodiments, a filling layer 1102 is provided between the wire 11 and the outer sheath 1104. The filling layer 1102 can reduce the direct contact between the wires 11 inside the outer sheath 1104, thereby avoiding mechanical damage, ensuring the stability of the physical structure inside the outer sheath 1104, and extending the service life of the cable. The filling layer 1102 is provided with a plurality of placement grooves for limiting the conductor 1101. By providing the placement grooves, the contact area between the filling layer 1102 and the conductor 1101 can be further increased, and the fixing effect of the filling layer 1102 on the wire 11 can be further improved. In this embodiment, the filling layer 1102 is made of polyethylene filler, which can play a good role in waterproofing, moisture-proofing and heat insulation.

[0057] In some embodiments, a shielding layer is coaxially arranged between the insulating layer and the inner sheath. The shielding layer is composed of an aluminum foil layer and a braided layer, and the braided layer is a mesh tube structure woven by copper wires. The inner sheath, the braided layer, the aluminum foil layer and the insulating layer are coaxially installed on the conductor 1101 from the outside to the inside in sequence. The shielding layer is used to prevent the conductor 1101 from being affected by electromagnetic interference during use.

[0058] In some embodiments, the cross section of the wire 11 is circular, fan-shaped, or a combination of circular and fan-shaped. The electric field on the surface of the inner conductor 1101 of the wire 11 with a circular cross section is uniform and has good stability; the wire 11 with a fan-shaped cross section can effectively reduce the cable diameter and save material consumption when combined with the wire 11 with a circular cross section.

[0059] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0060] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An elastic outer sheath structure, characterized in that: The device comprises a drag chain component (1) and a flexible sheath (2), wherein the fixed end of the drag chain component (1) is used to be connected to a base, the movable end of the drag chain component (1) is used to be connected to a mobile device, and a cavity (3) for placing a cable is provided inside the drag chain component (1); The two ends of the flexible sheath (2) are provided with first connecting mechanisms (4), and the movable end and the base of the drag chain assembly (1) are respectively provided with second connecting mechanisms (5) for cooperating with the first connecting mechanism (4), and the second connecting mechanism (5) is used to fix the two ends of the flexible sheath (2) after cooperating with the first connecting mechanism (4); The flexible sheath (2) comprises an elastic sheath (201) and a plurality of support frames (202); adjacent support frames (202) are connected via the elastic sheath (201) so that the flexible sheath (2) can be extended or shortened as the drag chain assembly (1) moves.

2. The elastic outer sheath structure according to claim 1, characterized in that: The drag chain assembly (1) comprises a plurality of unit chain links connected together in a relatively rotatable manner, wherein the unit chain links comprise two chain link plates (101) and two baffle plates (102), and the two chain link plates (101) and the two baffle plates (102) form a rectangular frame structure; and the two chain link plates (101) located on the same side of two adjacent unit chain links are hingedly connected.

3. The elastic outer sheath structure according to claim 2, characterized in that: The first connection mechanism (4) comprises a first connection plate (401), a rotating ring (402) and a first limiting portion (403), wherein the first limiting portion (403) is fixedly connected to the rotating ring (402), and a first limiting groove (404) is arranged in the first limiting portion (403); the second connection mechanism (5) comprises a second connection plate (501), a fixed ring (502) and a first limiting block (503), wherein the first limiting block (503) is used to cooperate with the first limiting groove (404), and both the first connection plate (401) and the second connection plate (501) are provided with slots (6).

4. The elastic outer sheath structure according to claim 3, characterized in that: The rotating ring (402) is provided with a second limiting block (405), the fixed ring (502) is connected with a second limiting portion (504), and the second limiting portion (504) is provided with a second limiting groove (505) for cooperating with the second limiting block (405).

5. The elastic outer sheath structure according to claim 3, characterized in that: A rotating rod (406) is fixedly connected to the rotating ring (402).

6. The elastic outer sheath structure according to claim 3, characterized in that: A card plate (7) is detachably connected in the slot (6) provided on the second connecting plate (501), and a card slot (8) for limiting the position of the cable is provided on the card plate (7).

7. The elastic outer sheath structure according to claim 6, characterized in that: A bending portion (10) is provided at the bottom end of the clamping plate (7).

8. A high-speed cable, characterized in that: The invention comprises a plurality of wires (11), an outer sheath (1104) and an elastic outer sheath structure as described in any one of claims 1 to 7, wherein the wires (11) comprise a conductor (1101), an insulating layer and an inner sheath (1103) which are coaxially arranged in sequence from the inside to the outside, and the outer sheath (1104) is used to fix the plurality of wires (11) and prevent the insulating layer and the inner sheath (1103) from being damaged.

9. The elastic outer sheath structure according to claim 7, characterized in that: A filling layer (1102) is provided between the inner protective layer (1103) and the outer protective layer.

10. The elastic outer sheath structure according to claim 8, characterized in that: A shielding layer is coaxially arranged between the insulating layer and the protective layer.

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