A kind of anti-pull insulated cable and its components

Abstract

The present invention relates to the technical field of cables, and specifically to a pull-resistant insulated cable and its components, including a cable body, the cable body including a cable core, a first gear arranged on the cable core, a protective sleeve sleeved on the outer side of the cable core, an annular rack meshing and transmission connected with the first gear arranged on the inner side of the protective sleeve, a coil barrel fixedly connected to the front side of the first gear, a second rotating shaft arranged on the front side of the first gear, a second gear located in the coil barrel coaxially arranged, the second rotating shaft is provided with a third gear located in the front side of the coil barrel and meshing and transmission with the annular rack, a limiting cylinder is connected to the side wall of the coil barrel, a sliding rod passes through the limiting cylinder, a clamping piece engaged with the second gear is arranged at one end of the sliding rod, an arc-shaped limiting abutment plate arranged in cooperation with the sliding rod is arranged on both sides below the coil barrel, the second rotating shaft is coaxially connected with the third gear located in the front side of the coil barrel and transmission connected with the annular rack, the present invention improves the torsion resistance of the cable body.

Description

Technical Field

[0001] The present invention relates to the technical field of cables, and in particular to a pull-resistant insulated cable and a component thereof. Background Art

[0002] A cable is usually made up of several or several groups of wires twisted together into a rope-like structure. The wires are insulated from each other and the entire structure is covered with a highly insulating covering.

[0003] The existing announcement number CN208819626U published on May 3, 2019 is a kind of robot-specific flexible torsion-resistant cable, including a plurality of cable units, a filling unit and a protection unit, wherein the plurality of cable units and the filling unit are arranged in the protection unit, and the plurality of cable units are uniformly arranged in the protection unit in a triangular, circular or square shape; the protection unit includes a wear-resistant elastic outer protective sleeve, a first shielded high-flexible wear-resistant torsion-resistant protective sleeve, a copper wire braided shielding sleeve, a second shielded high-flexible wear-resistant torsion-resistant protective sleeve and a cable wrapping tape layer, and the protection unit is sequentially arranged from the outside to the inside as a wear-resistant elastic outer protective sleeve, a first shielded high-flexible wear-resistant torsion-resistant protective sleeve, a copper wire braided shielding sleeve, a second shielded high-flexible wear-resistant torsion-resistant protective sleeve and a cable wrapping tape layer. The cable unit comprises a sheath, a first shielded high-flexibility, wear-resistant and torsion-resistant protective sheath, a copper wire braided shielding sheath, a second shielded high-flexibility, wear-resistant and torsion-resistant protective sheath and a cabling tape layer. In the cable unit design, a high-strength, high-temperature resistant sliding tape is longitudinally wrapped around the conductive core. Its working principle is to increase the slippage between the cable conductor and the shielded high-flexibility, wear-resistant and torsion-resistant insulating layer when the cable is twisted, to prevent the insulation and the conductor from cracking due to direct friction, and to improve the torsion resistance of the cable. However, the inventors found that the sliding between the cable conductor and the shielded high-flexibility, wear-resistant and torsion-resistant insulating layer also makes the relative sliding frequency between the two relatively high, so that the cable torsion frequency is high and thus reduces the torsion resistance of the cable. Summary of the invention

[0004] In view of this, an object of the present invention is to provide a pull-resistant insulated cable and its components to solve the problem of reduced torsion resistance of the cable.

[0005] The cam is an axially-coupled cable according to claim 1, wherein the first gear is an axially-coupled cable and the second gear is an axially-coupled cable.

[0006] Optionally, a connecting spring sleeved on the outside of the sliding rod is provided in the limiting cylinder, one end of the connecting spring is fixedly connected to the sliding rod, and the other end of the connecting spring is fixedly connected to the limiting cylinder.

[0007] Optionally, a stop block that engages with the second gear is provided at the other end of the slide rod.

[0008] Optionally, fixing rods are provided on both sides of the upper part of the ring tube, and the ends of the fixing rods are provided with locking teeth that cooperate with the annular rack.

[0009] Optionally, the ring tube is connected to the fixing rod via an elastic member, the elastic member is a rubber block, and a rubber sleeve is sleeved on the latch teeth.

[0010] In order to reduce the abrupt engagement between the annular rack and the latching teeth, when the speed of the annular rack is relatively high, the latching teeth first engage with part of the tooth angle on the annular rack. When the engagement fails, the part of the tooth angle of the annular rack is disengaged from the latching teeth, and then the latching teeth engage with the tooth angle beside the part of the tooth angle of the annular rack, which helps to slow down the speed of the annular rack and prevent the annular rack and the latching teeth from being damaged due to the abrupt engagement.

[0011] Optionally, guide grooves are provided on the upper side and the lower side of the arc-shaped limiting abutment plate.

[0012] Optionally, first gears are arranged on both sides of the first rotating shaft, and a cylinder is arranged on the opposite side of the two first gears.

[0013] Optionally, the second rotating shaft is connected to the first gear via a rotating member.

[0014] Optionally, a support frame is provided inside the cable core, the support frame includes an inner frame and an outer angle frame fixed on the outside of the inner frame, an inner core is provided inside the inner frame, the inner core includes a first conductor and an inner insulating layer from the inside to the outside, several inner cores are twisted into an insulating core, an outer insulating layer is wrapped around the insulating core to form a cable core, a second conductor is provided inside the outer angle frame, an insulating protective layer is provided outside the second conductor, a first sound-absorbing block is provided on the outer protruding corner of the outer angle frame, and a second sound-absorbing block is provided between two adjacent outer angle frames.

[0015] Based on the above-mentioned embodiment, a component of a pull-resistant insulated cable is proposed, including a limiting frame, a through channel arranged in cooperation with the cable body is arranged in the limiting frame, a strip groove arranged parallel to the axis of the cable body is arranged on the inner side wall of the through channel, a strip block arranged in cooperation with the strip groove is arranged on the outer side wall of the cable body, and buffer blocks filled in the strip groove are arranged on both sides of the strip block.

[0016] Beneficial effects of the present invention: The present invention provides a pull-resistant insulated cable and its components. When the protective sleeve rotates due to external rotational force, the annular rack rotates to drive the first gear and the drum to rotate. When the first gear rotates to a certain angle, the slide bar contacts the arc-shaped limiting plate. As the drum rotates, the clamp on the slide bar engages with the second gear. At this time, the drum rotates again to drive the third gear to rotate, so that after the rotating part of the protective sleeve is rotated by the rotational force, the front side of the rotating part will also be driven to rotate due to the meshing of the third gear and the annular rack, thereby reducing the impact on the cable body and improving the torsion resistance of the cable body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0019] Figure 2 for Figure 1 The enlarged structural diagram at A in the middle;

[0020] Figure 3 It is a structural schematic diagram of an adjusting member according to an embodiment of the present invention;

[0021] Figure 4 for Figure 3 The enlarged structural diagram at B in the middle;

[0022] Figure 5 It is a schematic diagram of the internal partial structure of an embodiment of the present invention;

[0023] Figure 6 Schematic diagram of the structure of the cable core according to an embodiment of the present invention.

[0024] In the figure: 1, cable core; 2, protective sleeve; 3, support frame; 4, first sound absorbing block; 5, second sound absorbing block; 6, arc-shaped limiting plate; 7, first rotating shaft; 8, first gear; 9, ring cylinder; 10, limiting cylinder; 11, second rotating shaft; 12, second gear; 13, annular rack; 14, sliding rod; 15, clamping piece; 16, connecting spring; 17, block; 18, fixing rod; 19, clamping teeth; 20, elastic piece; 21, rubber sleeve; 22, third gear; 23, cable core; 24, first conductor; 25, outer insulating layer; 26, second conductor; 27, insulating protective layer. DETAILED DESCRIPTION

[0025] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0026] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not represent any order, quantity or importance, but are only used to distinguish different components. "Including" or "comprising" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connecting" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0027] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a pull-resistant insulated cable comprises a cable body, the cable body comprises a cable core 1, the cable core 1 is provided with an adjusting member, the adjusting member comprises a first rotating shaft 7 parallel to the axis of the cable core 1, a first gear 8 is coaxially arranged on the first rotating shaft 7, a protective sleeve 2 is sleeved on the outer side of the cable core 1, a ring rack 13 meshing and transmission connected with the first gear 8 is arranged on the inner side of the protective sleeve 2, a ring drum 9 is coaxially fixedly connected to the front side of the first gear 8, a second rotating shaft 11 is arranged on the front side of the first gear 8, and a second gear 12 located in the ring drum 9 is coaxially arranged on the second rotating shaft 11, The second rotating shaft 11 is provided with a third gear 22 located on the front side of the ring cylinder 9 and meshing with the annular rack 13 for transmission. The side wall of the ring cylinder 9 is connected to a limiting cylinder 10, and the axis of the limiting cylinder 10 is cross-arranged with the axis of the ring cylinder 9. A sliding rod 14 passes through the limiting cylinder 10, and a clamping piece 15 is provided at one end of the sliding rod 14 for clamping with the second gear 12. Arc-shaped limiting abutment plates 6 cooperating with the sliding rod 14 are provided on both sides below the ring cylinder 9. The second rotating shaft 11 is coaxially connected with the third gear 22 located on the front side of the ring cylinder 9, and the third gear 22 is meshing and transmission-connected with the annular rack 13.

[0028] When the protective sleeve 2 rotates due to external rotational force, the annular rack 13 rotates to drive the first gear 8 and the drum 9 to rotate. When the first gear 8 rotates to a certain angle, the slide bar 14 contacts the arc-shaped limiting plate 6. As the drum 9 rotates, the clamp 15 on the slide bar 14 engages with the second gear 12. At this time, the drum 9 rotates again to drive the third gear 22 to rotate, so that after the rotating part of the protective sleeve 2 is rotated by the rotational force, the front side of the rotating part will also be driven to rotate due to the meshing of the third gear 22 and the annular rack 13, thereby reducing the impact on the cable body and improving the torsion resistance of the cable body.

[0029] like Figure 3 As shown, a connecting spring 16 sleeved on the outside of the sliding rod 14 is provided in the limiting cylinder 10 , one end of the connecting spring 16 is fixedly connected to the sliding rod 14 , and the other end of the connecting spring 16 is fixedly connected to the limiting cylinder 10 .

[0030] like Figure 4 As shown, in order to reduce the rotation of the slide rod 14 in the limiting cylinder 10, the inner wall of the limiting cylinder 10 is provided with a limiting piece, and the outer wall of the slide rod 14 is provided with a limiting block that cooperates with the limiting piece. The limiting piece is a limiting rod or a limiting groove.

[0031] In order to facilitate the sliding rod 14 to move to the arc-shaped limiting abutment plate 6 more smoothly, a abutment block 17 that is engaged with the second gear 12 is provided at the other end of the sliding rod 14 .

[0032] Fixed rods 18 are provided on both sides of the upper part of the ring cylinder 9, and the ends of the fixed rods 18 are provided with latching teeth 19 that cooperate with the annular rack 13. After the first gear 8 rotates to a certain angle, it is necessary to stop the protective sleeve 2 from continuing to rotate. After the first gear 8 rotates, it drives the latching teeth 19 to engage with the latching teeth 19, thereby reducing the rotation rate of the annular rack 13.

[0033] In order to reduce the abrupt engagement between the annular rack 13 and the latching teeth 19, when the speed of the annular rack 13 is relatively high, the latching teeth 19 first engage with part of the tooth angle on the annular rack 13. When the engagement fails, part of the tooth angle of the annular rack 13 is disengaged from the latching teeth 19, and then the latching teeth 19 engage with the tooth angles beside the part of the tooth angle of the annular rack 13, which facilitates slowing down the speed of the annular rack 13. At the same time, the annular rack 13 and the latching teeth 19 will not be damaged due to the abrupt engagement. The ring tube 9 is connected to the fixed rod 18 by an elastic member 20, and the elastic member 20 is a rubber block. A rubber sleeve 21 is sleeved on the latching teeth 19.

[0034] In order to facilitate the sliding rod 14 to smoothly slide onto the arc-shaped limiting abutment plate 6 when rotating, guide grooves are provided on the upper side and the lower side of the arc-shaped limiting abutment plate 6.

[0035] In order to facilitate the adjustment of a certain angle of the front and rear sides of the protective sleeve 2 subjected to the rotational force, thereby reducing the degree of damage to the cable body, first gears 8 are provided on both sides of the first rotating shaft 7, and the ring cylinder 9 is provided on the opposite side of the two first gears 8.

[0036] The second rotating shaft 11 is connected to the first gear 8 via a rotating member, and the rotating member is a bearing.

[0037] like Figure 5 , Figure 6 As shown, a support frame 3 is arranged inside the cable core 1, and the support frame 3 includes an inner support and an outer angle frame fixed on the outside of the inner support. An inner core is arranged inside the inner support, and the inner core includes a first conductor 24 and an inner insulating layer from the inside to the outside. The plurality of inner cores are twisted into an insulating core, and an outer insulating layer 25 is wrapped around the insulating core to form a cable core 23. A second conductor 26 is arranged inside the outer angle frame, and an insulating protective layer 27 is arranged outside the second conductor 26. A first sound absorbing block 4 is arranged on the outer protruding corner of the outer angle frame, and a second sound absorbing block 5 is arranged between two adjacent outer angle frames. The arrangement of the support frame 3 further improves the torsional resistance of the cable body, and the first sound absorbing block 4 and the second sound absorbing block 5 improve the insulation performance of the cable body and reduce the degree to which the cable body is affected by the outside world.

[0038] The support frame 3 may also be in the shape of a triangle, a rectangle or a five-pointed star.

[0039] Based on the above embodiment, a component of a pull-resistant insulated cable is proposed, including a limiting frame, a through channel arranged in cooperation with the cable body is arranged in the limiting frame, a strip groove arranged parallel to the axis of the cable body is arranged on the inner side wall of the through channel, a strip block arranged in cooperation with the strip groove is arranged on the outer side wall of the cable body, and buffer blocks filled in the strip groove are arranged on both sides of the strip block. Due to the cooperation between the strip groove and the strip block, the limiting frame further improves the pull-resistant performance of the cable body.

[0040] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0041] The embodiments of the present invention are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pull-resistant insulated cable, comprising a cable body, wherein the cable body comprises a cable core (1), characterized in that: The cable core (1) is provided with an adjusting member, the adjusting member comprising a first rotating shaft (7) parallel to the axis of the cable core (1), a first gear (8) being coaxially arranged on the first rotating shaft (7), a protective sleeve (2) being sleeved on the outer side of the cable core (1), an annular rack (13) being meshed and transmission-connected with the first gear (8) being arranged on the inner side of the protective sleeve (2), a drum (9) being coaxially fixedly connected to the front side of the first gear (8), a second rotating shaft (11) being arranged on the front side of the first gear (8), a second gear (12) being coaxially arranged on the second rotating shaft (11) and being located in the drum (9), the second rotating shaft ( 11) is provided with a third gear (22) located on the front side of the cylinder (9) and meshing with the annular rack (13), the side wall of the cylinder (9) is connected with a limiting cylinder (10), a slide rod (14) passes through the limiting cylinder (10), one end of the slide rod (14) is provided with a clamping member (15) engaged with the second gear (12), both sides below the cylinder (9) are provided with arc-shaped limiting abutment plates (6) arranged in cooperation with the slide rod (14), the second rotating shaft (11) is coaxially connected with a third gear (22) located on the front side of the cylinder (9), and the third gear (22) is meshing with the annular rack (13) for transmission connection; A connecting spring (16) is arranged inside the limiting cylinder (10) and is sleeved on the outside of the sliding rod (14); one end of the connecting spring (16) is fixedly connected to the sliding rod (14), and the other end of the connecting spring (16) is fixedly connected to the limiting cylinder (10); First gears (8) are provided on both sides of the first rotating shaft (7), and the drums (9) are provided on opposite sides of the two first gears (8); The second rotating shaft (11) is connected to the first gear (8) via a rotating member.

2. The tear-resistant insulated cable according to claim 1, characterized in that: The other end of the slide rod (14) is provided with a stop block (17) that cooperates with the arc-shaped limiting stop plate (6).

3. The tear-resistant insulated cable according to claim 1, characterized in that: Both sides of the upper part of the ring cylinder (9) are provided with fixing rods (18), and the ends of the fixing rods (18) are provided with latching teeth (19) which are matched with the annular rack (13).

4. The tear-resistant insulated cable according to claim 3, characterized in that: The ring tube (9) and the fixing rod (18) are connected via an elastic member (20), the elastic member (20) is a rubber block, and a rubber sleeve (21) is sleeved on the latching tooth (19).

5. The tear-resistant insulated cable according to claim 1, characterized in that: The upper side and the lower side of the arc-shaped limiting abutment plate (6) are both provided with guide grooves.

6. The tear-resistant insulated cable according to claim 1, characterized in that: A support frame (3) is arranged inside the cable core (1), the support frame (3) comprising an inner frame and an outer angle frame fixed outside the inner frame, an inner core is arranged inside the inner frame, the inner core comprises a first conductor (24) and an inner insulating layer in sequence from inside to outside, a plurality of the inner cores are twisted into an insulating core, the insulating core is wrapped with an outer insulating layer (25) to form a cable core (23), a second conductor (26) is arranged inside the outer angle frame, an insulating protective layer (27) is arranged outside the second conductor (26), a first sound absorbing block (4) is arranged on the outer protruding corner of the outer angle frame, and a second sound absorbing block (5) is arranged between two adjacent outer angle frames.

7. A tear-resistant insulated cable assembly according to claim 1, characterized in that: It comprises a limiting frame, wherein a through channel cooperating with the cable body is arranged in the limiting frame, a strip groove arranged parallel to the axis of the cable body is arranged on the inner side wall of the through channel, a strip block cooperating with the strip groove is arranged on the outer side wall of the cable body, and buffer blocks filled in the strip groove are arranged on both sides of the strip block.

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