Wear-resistant flexible cable suitable for robot

Abstract

The utility model discloses a wear-resistant flexible cable suitable for a robot, which comprises an outer protective sleeve and an inner protective sleeve arranged in the outer protective sleeve, and a shielding layer and a fireproof layer are arranged in the inner protective sleeve. A plurality of groups of wear-resistant bulges are arranged on the surface of the outer protective sleeve, and protective coatings are sprayed on the surfaces of the outer protective sleeve and the wear-resistant bulges; multiple groups of soft silica gel are arranged on the surface of the inner protective sleeve, and the sides, away from the inner protective sleeve, of the soft silica gel are fixedly connected with the interior of the outer protective sleeve, the outer protective sleeve is prevented from making contact with a contact object through contact between the abrasion-resistant protrusions and the contact object, and therefore friction acts on the abrasion-resistant protrusions; according to the cable, friction force is prevented from acting on the outer protective sleeve, wear-resistant protection on the outer protective sleeve is achieved, the service life of the whole cable is prolonged, the wear-resistant protrusions are further provided with the protective coatings, the protective coatings can protect the wear-resistant protrusions, and the service life of the wear-resistant protrusions can be further prolonged.

Description

Technical Field

[0001] This utility model relates to the field of wire and cable technology, specifically to a wear-resistant flexible cable suitable for robots. Background Technology

[0002] Electrical wires and cables are essential components of robots and robotic arms, ensuring the power supply to the internal components of the robot.

[0003] During robot operation, the movement of the cables causes them to move synchronously. In this process, cables located outside the robot frequently rub against the external environment, while cables located inside the robot frequently rub against internal components. This leads to wear on the cable sheaths and affects the cable's lifespan. Therefore, the wear resistance of cables used in robots is particularly important.

[0004] A Chinese patent application (CN202121860115.X) discloses a highly flexible and wear-resistant cable for robots, which includes: "an outer sheath tube, the surface of which is composed of wear-resistant mechanisms, the wear-resistant mechanisms including a polypropylene protective film layer, a carbon fiber composite film layer at the bottom of the polypropylene protective film layer, and four insulating sleeves evenly distributed inside the outer sheath tube. Its structure is reasonable. This invention, by incorporating a copper wire braided mesh and a polyurethane flexible protective tube, improves the high flexibility of the robot cable, reducing the likelihood of breakage when the robot cable is entangled or bent. Simultaneously, by incorporating the wear-resistant mechanisms and applying them to the outer sheath tube through layered coating, the toughness and wear resistance of the robot cable are enhanced, reducing damage caused by friction during daily operation."

[0005] Based on the search of the aforementioned patents, we found that existing technologies mostly apply abrasion-resistant coatings to the surface of cables to increase their abrasion resistance. However, this method is gradually worn away due to long-term friction between the cable and the contact object, which further reduces the cable's abrasion resistance. Utility Model Content

[0006] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a wear-resistant flexible cable suitable for robots, comprising an outer protective sleeve and an inner protective sleeve disposed inside the outer protective sleeve, wherein the inner protective sleeve is provided with a shielding layer and a fireproof layer; the surface of the outer protective sleeve is provided with multiple sets of wear-resistant protrusions, and the surfaces of the outer protective sleeve and the wear-resistant protrusions are all coated with a protective coating; the surface of the inner protective sleeve is provided with multiple sets of soft silicone, and the side of the soft silicone away from the inner protective sleeve is fixedly connected to the interior of the outer protective sleeve; the fireproof layer is provided with a set of conductive wire cores and a set of signal transmission wire cores, wherein the conductive wire cores and the signal transmission wire cores are far apart from each other, and the gap between the conductive wire cores and the signal transmission wire cores is filled by a filling layer.

[0008] As a further embodiment of this utility model: each group of wear-resistant protrusions includes five protrusions fixed in a ring on the outer protective sleeve, and adjacent groups of wear-resistant protrusions are far apart from each other and form a bending area.

[0009] As a further embodiment of this utility model: the two sides of the protrusion away from the outer protective sleeve are both formed with beveled edges.

[0010] As a further embodiment of this utility model: each group of soft silicone includes five silicone bodies fixed in a ring on the inner protective sleeve, and two adjacent groups of soft silicone are far apart from each other and form a second bending area, the second bending area corresponding to the position of the first bending area.

[0011] As a further embodiment of this utility model: a buffer cavity is provided between the outer protective sleeve and the inner protective sleeve, and the buffer cavity is located between each two silicone bodies of the soft silicone.

[0012] As a further embodiment of this utility model: a hollow area is provided in the middle of the filling layer, the hollow area is designed with an elliptical structure, and the hollow area separates the conductive wire core from the signal transmission wire core.

[0013] As a further embodiment of this utility model: the shielding layer is woven from metal wires and disposed on the surface of the fireproof layer, the fireproof layer is made of chlorinated polyethylene, and the filling layer is made of flexible polyvinyl chloride.

[0014] As a further embodiment of this utility model: the protective coating is molybdenum sulfide, and both the outer protective sleeve and the inner protective sleeve are made of polyethylene.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. In this application, by designing an outer protective sleeve and setting multiple sets of wear-resistant protrusions on the outer protective sleeve, the wear-resistant protrusions can provide a certain support for the entire cable. The contact between the wear-resistant protrusions and the contact object is used to prevent the outer protective sleeve from contacting the contact object, thereby transferring the frictional force to the wear-resistant protrusions and preventing the frictional force from acting on the outer protective sleeve, thus providing wear-resistant protection for the outer protective sleeve and extending the service life of the entire cable. Furthermore, the wear-resistant protrusions also have a protective coating, which can protect the wear-resistant protrusions and further extend their service life.

[0017] Second, in this application, by providing soft silicone and a buffer cavity between the outer protective sleeve and the inner protective sleeve, a good buffer zone can be formed at this point when the cable is subjected to external extrusion pressure, which can play a certain buffering effect on the extrusion pressure, thereby reducing the impact of the extrusion pressure on the internal wire core and ensuring the stability of the internal wire core.

[0018] Third, in this application, by setting a hollow area in the filling layer and keeping the conductive core and signal transmission core far apart, on the one hand, the hollow area can form a better buffer effect, further improving the stability of the core under external pressure. On the other hand, when connecting cables, the filling layer can be easily torn open from the hollow area to form two halves. After the filling layer is divided into two halves, one half contains the conductive core and the other half contains the signal transmission core, which can facilitate the connection between the two cables and avoid the cores becoming messy or even connecting incorrectly.

[0019] Fourth, in this application, the flexibility of the cable can be ensured by setting bending area one, bending area two and soft silicone. When the cable is bent, it can be bent from bending area one and bending area two, which makes it convenient for the cable to be used in different parts of the robot. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0021] Figure 2 This is a cross-sectional structural schematic diagram of this utility model;

[0022] Figure 3 This is a side sectional view of the outer protective sleeve and the inner protective sleeve of this utility model.

[0023] Figure 4 This is a side view of the protective coating of this utility model.

[0024] The reference numerals and names in the figure are as follows:

[0025] 1. Outer protective sleeve; 2. Inner protective sleeve; 3. Shielding layer; 4. Fireproof layer; 5. Filling layer; 6. Conductive core; 7. Signal transmission core; 8. Hollow area; 9. Wear-resistant protrusion; 10. Soft silicone; 11. Bending area one; 12. Buffer cavity; 13. Bending area two; 14. Protective coating. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1-4 A wear-resistant flexible cable suitable for robots includes an outer protective sleeve 1 and an inner protective sleeve 2 disposed inside the outer protective sleeve 1. The inner protective sleeve 2 is provided with a shielding layer 3 and a fireproof layer 4. The surface of the outer protective sleeve 1 is provided with multiple sets of wear-resistant protrusions 9, and the surface of the outer protective sleeve 1 and the wear-resistant protrusions 9 are sprayed with a protective coating 14. The surface of the inner protective sleeve 2 is provided with multiple sets of soft silicone 10, and the side of the soft silicone 10 away from the inner protective sleeve 2 is fixedly connected to the interior of the outer protective sleeve 1. The fireproof layer 4 is provided with a set of conductive wire cores 6 and a set of signal transmission wire cores 7, the conductive wire cores 6 and the signal transmission wire cores 7 are far apart from each other, and the gap between the conductive wire cores 6 and the signal transmission wire cores 7 is filled by a filling layer 5.

[0028] Please see Figure 1 and Figure 2 In this embodiment, each set of wear-resistant protrusions 9 includes five protrusions fixed in a ring on the outer protective sleeve 1, and two adjacent sets of wear-resistant protrusions 9 are far apart from each other and form a bending area 11; the two sides of the protrusions away from the outer protective sleeve 1 are formed with bevels.

[0029] Specifically, the protrusions on the outer protective sleeve 1 are raised. When the entire cable comes into contact with an adjacent contact object, the protrusions will directly contact the contact object to avoid the outer protective sleeve 1 from contacting the contact object, thereby avoiding friction on the outer protective sleeve 1 and extending the service life of the entire cable. The setting of the bending area 11 allows the cable to bend from here when bending, ensuring the flexibility of the cable. Each protrusion has two bevels. When two adjacent protrusions are in contact, the bevels can be used to contact the flat contact object, improving the stability of the contact.

[0030] Please see Figure 1 and Figure 3In this embodiment, each set of soft silicone 10 includes five silicone bodies fixed in a ring on the inner protective sleeve 2, and two adjacent sets of soft silicone 10 are far apart from each other and form a second bending area 13, which corresponds to the position of the first bending area 11.

[0031] Specifically, by setting up the soft silicone 10, a buffer effect can be formed between the outer protective sleeve 1 and the inner protective sleeve 2, reducing the impact of external extrusion on the wire core. The bending area 2 13 can cooperate with the bending area 11 to facilitate the bending of the entire cable.

[0032] Please see Figure 2 In this embodiment, a buffer cavity 12 is also provided between the outer protective sleeve 1 and the inner protective sleeve 2. The buffer cavity 12 is located between each pair of silicone bodies of the soft silicone 10.

[0033] Specifically, the buffer cavity 12 can reduce the overall weight of the cable and prevent external pressure from directly affecting the wire core, thus providing a certain degree of buffering.

[0034] Please see Figure 1 and Figure 2 In this embodiment, a hollow region 8 is provided in the middle of the filling layer 5. The hollow region 8 has an elliptical structure design and separates the conductive core 6 from the signal transmission core 7.

[0035] Specifically, the hollow area 8 can provide a certain buffer effect for the conductive core 6 and the signal transmission core 7. On the other hand, the trajectory of the hollow area 8 can be used to easily tear the cable along the trajectory when connecting it, thereby separating the conductive core 6 and the signal transmission core 7, making it easy to identify and avoiding confusion.

[0036] Please see Figure 1 and Figure 2 In this embodiment, the shielding layer 3 is woven from metal wires and disposed on the surface of the fireproof layer 4. The fireproof layer 4 is made of chlorinated polyethylene, and the filling layer 5 is made of flexible polyvinyl chloride.

[0037] Specifically, shielding layer 3 provides better shielding performance for the cable, fireproof layer 4 provides better fireproof performance for the cable, and filling layer 5 provides better flexibility for the cable.

[0038] Please see Figure 1 and Figure 4 In this embodiment, the protective coating 14 is molybdenum sulfide, and both the outer protective sleeve 1 and the inner protective sleeve 2 are made of polyethylene.

[0039] Specifically, the protective coating 14 has molybdenum sulfide, which can provide the outer protective sleeve 1 and the wear-resistant protrusions 9 with good wear resistance, corrosion resistance and high temperature stability, while the wear-resistant protrusions 9 can be made of rubber.

[0040] When the cable rubs against the contact object, the wear-resistant protrusions 9 directly contact the contact object. Two adjacent protrusions on each set of wear-resistant protrusions 9 form a support, which raises the outer protective sleeve 1, thereby preventing the outer protective sleeve 1 from contacting the contact object. At this time, when the cable rubs against the contact object, the wear-resistant protrusions 9 will contact and rub against it, thus preventing the outer protective sleeve 1 from rubbing against the contact object. This can improve the wear resistance of the cable and extend its service life.

[0041] When the cable is subjected to external pressure, the pressure is applied to the outer protective sleeve 1 through the wear-resistant protrusion 9. Since there is soft silicone 10 and buffer cavity 12 between the outer protective sleeve 1 and the inner protective sleeve 2, the pressure can be buffered to a certain extent and the force applied to the conductive core 6 and signal transmission core 7 can be reduced. At the same time, the pressure can be further buffered through the hollow area 8.

[0042] When it is necessary to expose the conductive core 6 and the signal transmission core 7 for connection, the staff can strip the cable along the path of the hollow area 8. After the filling layer 5 is stripped along the path of the hollow area 8, the filling layer 5 can be divided into two, so that the conductive core 6 occupies half and the signal transmission core 7 occupies half, which can separate the conductive core 6 and the signal transmission core 7 and avoid the mess and incorrect connection of multiple cores.

[0043] When the cable is bent, it can bend at the positions of bending area 11 and bending area 2 13 because the cable has bending area 11 and bending area 2 13, thus achieving the bending and flexibility requirements of the wear-resistant flexible cable.

[0044] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A wear-resistant flexible cable suitable for robots, characterized in that, It includes an outer protective sleeve (1) and an inner protective sleeve (2) disposed inside the outer protective sleeve (1), wherein the inner protective sleeve (2) is provided with a shielding layer (3) and a fireproof layer (4); The outer protective sleeve (1) has multiple sets of wear-resistant protrusions (9) on its surface, and the outer protective sleeve (1) and the wear-resistant protrusions (9) are coated with a protective coating (14). The surface of the inner protective sleeve (2) is provided with multiple sets of soft silicone (10), and the side of the soft silicone (10) away from the inner protective sleeve (2) is fixedly connected to the inside of the outer protective sleeve (1). The fireproof layer (4) is provided with a set of conductive wire cores (6) and a set of signal transmission wire cores (7). The conductive wire cores (6) and the signal transmission wire cores (7) are far apart from each other, and the gap between the conductive wire cores (6) and the signal transmission wire cores (7) is filled by a filling layer (5).

2. The wear-resistant flexible cable suitable for robots according to claim 1, characterized in that, Each set of wear-resistant protrusions (9) includes five protrusions fixed in a ring on the outer protective sleeve (1), and two adjacent sets of wear-resistant protrusions (9) are far apart from each other and form a bending area (11).

3. The wear-resistant flexible cable suitable for robots according to claim 2, characterized in that, The two sides of the protrusion away from the outer protective sleeve (1) are both formed with beveled edges.

4. The wear-resistant flexible cable suitable for robots according to claim 1, characterized in that, Each set of soft silicone (10) includes five silicone bodies fixed in a ring on the inner protective sleeve (2), and two adjacent sets of soft silicone (10) are far apart from each other and form a second bending area (13), the second bending area (13) corresponding to the position of the first bending area (11).

5. The wear-resistant flexible cable suitable for robots according to claim 1, characterized in that, A buffer cavity (12) is also provided between the outer protective sleeve (1) and the inner protective sleeve (2), and the buffer cavity (12) is located between each two silicone bodies of the soft silicone (10).

6. The wear-resistant flexible cable suitable for robots according to claim 1, characterized in that, The filling layer (5) has a hollow area (8) in the middle. The hollow area (8) has an elliptical structure and separates the conductive core (6) from the signal transmission core (7).

7. The wear-resistant flexible cable suitable for robots according to claim 1, characterized in that, The shielding layer (3) is woven from metal wire and placed on the surface of the fireproof layer (4). The fireproof layer (4) is made of chlorinated polyethylene, and the filling layer (5) is made of soft polyvinyl chloride.

8. The wear-resistant flexible cable suitable for robots according to claim 1, characterized in that, The protective coating (14) is molybdenum sulfide, and both the outer protective sleeve (1) and the inner protective sleeve (2) are made of polyethylene.

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