CN218676571U

CN218676571U - Encoder cable

Info

Publication number: CN218676571U
Application number: CN202222978390.2U
Authority: CN
Inventors: 蔚彦丽; 齐刚; 邱绍坤; 荣沭; 俞俊; 谢清心
Original assignee: Youyi Cable Zhangjiagang Co ltd
Current assignee: Youyi Cable Zhangjiagang Co ltd
Priority date: 2022-11-09
Filing date: 2022-11-09
Publication date: 2023-03-21
Anticipated expiration: 2032-11-09

Abstract

The application discloses encoder cable, its characterized in that includes: a signal transmission unit, the signal transmission unit further comprising: the heart yearn is first, heart yearn is many, heart yearn one still includes: a first conductor, which is arranged in the center of the first core wire; the first insulating material coats the first conductor; the heart yearn two, heart yearn two is many, the two pairs of transposition pitches of heart yearn rationally set up and stagger each other, heart yearn two still includes: the cable cores are arranged in the center of the second core wire, the number of the cable cores is multiple, and the cable cores are arranged oppositely; the first filler is twisted with the cable core; the first shielding part is used for winding and shielding the first filler and the cable core; the signal shielding unit covers the signal transmission unit; an outer sheath, wherein the outer sheath extrudes the signal shielding unit.

Description

Encoder cable

Technical Field

The application relates to the field of cables, in particular to an encoder cable.

Background

The encoder plays a role in positioning, angle, speed and length measurement in engineering machinery application. They improve the convenience of the driver's work, bear the burden of improving productivity, the engineering machinery encoder can provide reliable feedback of position, deflection angle and speed under extremely harsh conditions, and the encoder design is completely free of sliding contact, ensuring high reliability and long life.

Along with the process of industrial intelligence, the encoder cable is used as a carrier for compiling and converting signals or data into signal transmission and feedback in a signal form capable of being used for communication, transmission and storage as an encoder, the application is increasingly wide, and meanwhile, the product quality of the cable is more strict when the cable is required to face different operation working conditions. A high-quality encoder cable is a powerful guarantee of safety and high efficiency of signal transmission and feedback operation, and crosstalk and return loss can be formed in the existing encoder cable in the signal transmission process, so that transmission signals are attenuated.

Accordingly, there is a need for an encoder cable that reduces crosstalk and return loss during signal transmission, and reduces attenuation of the transmitted signal.

SUMMERY OF THE UTILITY MODEL

The utility model provides a solve present encoder cable and can form crosstalk and return loss in signal transmission process, cause the problem of transmission signal decay, for solving above-mentioned technical problem, provide one kind and reduce crosstalk and return loss in signal transmission process, reduce the encoder cable of transmission signal decay.

In order to achieve the above purpose, the embodiments of the present application adopt the following technical solutions: an encoder cable, comprising: a signal transmission unit, the signal transmission unit further comprising: the heart yearn is one, and heart yearn one is many, and heart yearn one still includes: the first conductor is arranged in the center of the first core wire; the first insulating material coats the first conductor; the heart yearn two, heart yearn two are many, and two pairs of transposition pitches of heart yearn rationally set up and stagger each other, and heart yearn two still includes: the cable cores are arranged in the center of the second core wire, the number of the cable cores is multiple, and the cable cores are arranged oppositely; the first filler is twisted with the cable core; shielding I, shielding a winding shielding filler I and a cable core; the signal shielding unit coats the signal transmission unit; the outer sheath is extruded with the signal shielding unit.

Further, according to the embodiment of the present application, the second core wire further includes a first shield and a first sheath, the first shield is covered by the second shield, and the second shield is covered by the first sheath.

Further, according to the embodiment of the application, the cable core further comprises a second conductor and a second insulating material, the second conductor is arranged in the center of the cable core, and the second insulating material covers the second conductor.

Further, according to the embodiment of the application, wherein the signal transmission unit further comprises a core wire III, the core wire III is filled with cotton ropes, and the core wire I, the core wire II and the core wire III are untwisted and stranded to form a cable.

Further, according to the embodiment of the application, the signal shielding unit further comprises a first wrapping tape, a third shielding tape and a second wrapping tape, and the first wrapping tape wraps the signal transmission unit.

Further, according to the embodiment of the application, the shielding third braided shielding tape one and the shielding second tape tow package shield three.

Further, according to the embodiment of the present application, the first conductor is a sixth type of soft copper conductor, and the first insulating material is a DSM TPE CM600-V material.

Further, according to the embodiment of the application, the first filler is filled with polypropylene bulked yarn, and the second shielding is shielded with aluminum-plastic composite tape.

Further, according to the embodiment of the present application, the second conductor is a sixth type soft copper conductor, and the second insulating material is a polypropylene chemical foaming material.

Further, according to the embodiment of the application, the first wrapping tape is made of a PTFE wrapping tape, the third shielding tape is made of a tinned copper wire braided shielding tape, and the second wrapping tape is made of a non-woven fabric wrapping tape.

Compared with the prior art, this application is through setting up the heart yearn pair twist pitch rationally and staggering each other, set up the filler respectively in the heart yearn clearance of pair twist, it is less to ensure crosstalk interference, and the heart yearn among the signal transmission unit adopts back to turn round the transposition and becomes the cable, and fill the cotton rope in the heart yearn clearance, crosstalk and return loss among the cable transmission process have been reduced, the transmission rate of cable has been improved, present encoder cable can form crosstalk and return loss in signal transmission process has been solved, cause the problem of transmission signal decay, reach and reduced crosstalk and return loss among the signal transmission process, the better effect of transmission signal decay has been reduced.

Drawings

The present application is further described below with reference to the drawings and examples.

Fig. 1 is a schematic structural diagram of an encoder cable according to the present application.

Fig. 2 is a schematic structural diagram of a cable signal transmission unit of an encoder according to the present application.

Fig. 3 is a schematic structural diagram of a signal shielding unit of an encoder cable according to the present application.

In the attached drawings

1. Signal transmission unit 10, core wire I101 and conductor I

102. Insulating material I11, core wire II 111 and cable core

1110. Conductor two 1111, insulating material two 112 and filler one

113. Shield one 114, shield two 115, sheath one

12. Three core wires 2, signal shielding unit 20 and one wrapping tape

21. Shield three 22, wrapping tape two 3 and outer sheath

23. Metal line 24, isolation layer

Detailed Description

In order to make the objects and technical solutions of the present invention clear and fully described, and the advantages thereof more clearly understood, the embodiments of the present invention are described in further detail below with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of some, but not all, embodiments of the present invention and are not to be considered as limiting, and that all other embodiments can be made by one of ordinary skill in the art without any inventive work.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "a," "an," "first," "second," "third," "fourth," "fifth," and "sixth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

For the purposes of simplicity and explanation, the principles of the embodiments are described by referring mainly to examples. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the embodiments. It will be apparent, however, to one of ordinary skill in the art that the embodiments may be practiced without limitation to these specific details. In some instances, well-known methods and structures have not been described in detail so as not to unnecessarily obscure the embodiments. In addition, all embodiments may be used in combination with each other.

Example 1:

as shown in fig. 1, the present embodiment provides an encoder cable, including: signal transmission unit 1, signal transmission unit 1 further includes: core wire 10, core wire 10 are many, and core wire 10 still includes: a first conductor 101, wherein the first conductor 101 is arranged in the center of the first core wire 10; a first insulating material 102, wherein the first insulating material 102 covers the first conductor 101; two 11, two 11 heart yearns are many, two 11 pair twist pitches of heart yearn rationally set up and stagger each other, two 11 still include of heart yearn: the cable cores 111 are arranged in the centers of the core wires II 11, the number of the cable cores 111 is multiple, and the cable cores 111 are arranged oppositely; the first filler 112, and the first filler 112 is twisted with the cable core 111; a first shield 113, wherein the first shield 113 is wound around the first shield filler 112 and the cable core 111; the signal shielding unit 2 is used for covering the signal transmission unit 1 by the signal shielding unit 2; the outer sheath 3, outer sheath 3 crowded package signal shielding unit 2.

The first core wire 10 of the signal transmission unit 1 comprises a first conductor 101 and a first insulating material 102, wherein the first conductor 101 is a sixth type soft copper conductor, and the material has the advantages of good flexibility and high reliability. The first insulating material 102 is made of a Thermoplastic Elastomer (TPE) material, the specific model is DSM TPE CM600-V, and the material has the advantages of high rubber strength, high resilience, high elasticity, wide hardness range, environmental friendliness, no toxicity, safety, excellent colorability, weather resistance, soft touch, fatigue resistance, temperature resistance, excellent processability, no need of vulcanization and the like, and can reduce crosstalk and echo loss in the cable transmission process and improve the transmission rate of the cable.

As shown in FIG. 1, each group of the conductors 101 in the core wire I10 has different wire gauge sizes, and signals are transmitted by using the core wires I10 with different wire gauges, so that the signals are ensured not to interfere with each other, crosstalk and return loss in the cable transmission process are ensured to be reduced, and the transmission rate of the cable is improved.

The twisted pair pitches of the two core wires 11 of the signal transmission unit 1 are reasonably arranged and staggered with each other, so that the crosstalk interference is small, and the effects of reducing the crosstalk and the return loss in the cable transmission process and improving the transmission rate of the cable are achieved. And the gaps of the twisted core wires are respectively filled with a filler I112, the filler I112 is made of polypropylene bulked yarns, and the material has high initial modulus and can be stretched at high strength, so that the wear resistance is good. The density of the material is only 0.91g/cm < 3 >, the material is a light variety in chemical fibers, the material is good in acid and alkali resistance and basically does not absorb moisture, the moisture regain is close to zero under the general condition, the roundness and flexibility of a twisted structure are guaranteed, crosstalk and return loss in the cable transmission process are reduced, the transmission rate of the cable is improved, and the influence on the whole weight of the cable is small.

The first filler 112 is wrapped and coated with a first shield 113, the first shield 113 is made of an aluminum-plastic composite tape, the second core wire 11 further comprises a second shield 114 and a first sheath 115, the second shield 114 is wrapped and coated with the first shield 113, the first sheath 115 is wrapped and coated with the second shield 114, the second rear shield 114 is made of a tinned copper wire winding shielding structure with 100% shielding density, and the design of fine, high conductivity and high response frequency is adopted, so that interference is shielded and filtered through larger absorption and faster conduction, and interference of transmission signals is ensured to be smaller. And a layer of sheath one 115 is extruded outside the winding shield of each pair of core wires two 12, the sheath one 115 adopts a Thermoplastic Elastomer (TPE) inner sheath, and the material has the characteristics of excellent electrical property, good mechanical property, excellent weather resistance, heat resistance, low temperature resistance, low density, no toxicity and the like, so that the crosstalk and the return loss in the cable transmission process are reduced, and the transmission rate of the cable is improved.

The cable core 111 further comprises a second conductor 1110 and a second insulating material 1111, wherein the second conductor 1110 is arranged in the center of the cable core 111, and the second insulating material 1111 covers the second conductor 1110. The second conductor 1110 is a sixth type of soft copper conductor, and the material has the advantages of good flexibility and high reliability. The second insulating material 1111 is made of polypropylene chemical foaming material, and has the following advantages: the molecular is in a linear structure, the density is 0.89-0.91 g/cm < 3 >, the density is lower than that of low-density polyethylene, the melting point can reach more than 150C (different melting points of different brands), the melting point is about 40-50% higher than that of polyethylene, and the long-term working temperature can reach 90 ℃. The polypropylene belongs to a non-polar material, has higher breakdown strength, larger volume resistivity and unobvious change along with temperature, and can improve the running voltage of the cable, improve the transmission capacity of a line and reduce the transmission loss under the condition of the same thickness of an insulating layer, thereby reducing the crosstalk and the return loss in the transmission process of the cable and improving the transmission rate of the cable.

As shown in fig. 2, the signal transmission unit 1 further includes a core wire three 12, the core wire three 12 is filled with cotton rope, and the core wire one 10, the core wire two 11 and the core wire three 13 are untwisted and twisted into a cable. The cotton rope is filled in the gap of the wire core, so that the roundness and the flexibility of the cable are ensured, the crosstalk and the return loss in the cable transmission process are reduced, and the transmission rate of the cable is improved.

The signal shielding unit 2 further comprises a first wrapping tape 20, a third shielding tape 21 and a second wrapping tape 22, and the first wrapping tape 20 wraps and covers the signal transmission unit 1; the shielding third 21 is woven with a shielding tape I20, and the tape II 22 drags the shielding third 21. The first wrapping tape 20 is made of PTFE (Polytetra fluoroethylene), the third shielding tape 21 is made of tinned copper wire braided shielding, and the second wrapping tape 22 is made of non-woven wrapping tape.

The wrapping belt I20 is wrapped outside the cabling of the signal transmission unit 1, and the used materials have the advantages of low dielectric constant, small dielectric loss, high electric strength resistance, self-lubrication, non-stickiness, electric insulation, good ageing resistance and the like, so that the bending times, the working temperature and the transmission capacity of the cable can be improved to a great extent. The coated cabling element adopts a shielding III 21, namely a tinned copper wire braided shielding structure, so that the interference of an external interference source on the cable and the interference of the cable on other circuits can be prevented, and the effects of reducing crosstalk and return loss in the cable transmission process and improving the transmission rate of the cable are achieved.

The outer sheath 3 is made of TPU (Thermoplastic polyurethane elastomer rubber) material, and the material has the advantages of excellent oil performance, good toughness, wear resistance, low temperature resistance, water resistance, aging resistance, acid and alkali resistance, weather resistance, flame retardance and the like, and the characteristics enable the cable to improve the mechanical strength of the cable and reduce the stress of a conductor in the dynamic operation process, so that the service life of the whole cable is prolonged.

As shown in fig. 3, the signal shielding unit 2 further includes a metal wire 23 and an isolation layer 24, the metal wire 23 is stranded into a strand, and the signal shielding unit 2 is wrapped by a braiding technique, so that in the signal transmission process, it is ensured that the cable is not interfered by external electromagnetic interference, crosstalk and return loss in the cable transmission process are reduced, and the transmission rate of the cable is improved. The isolation layer 24 is coated on the periphery of the metal wire 23, and the metal wire 23 and the isolation layer 24 can be free from the interference of electromagnetic interference signals, so that the crosstalk and the return loss are reduced, and the transmission rate of the cable is improved.

Although the illustrative embodiments of the present application have been described in order to enable those skilled in the art to understand the present application, the present application is not limited to these embodiments, and various modifications can be made within the spirit and scope of the present application as defined and defined by the appended claims.

Claims

1. An encoder cable, comprising:

a signal transmission unit, the signal transmission unit further comprising:

the first core wire is a plurality of, and the first core wire further comprises:

a first conductor, which is arranged in the center of the first core wire;

the first insulating material coats the first conductor;

the heart yearn two, heart yearn two is many, the two pairs of transposition pitches of heart yearn rationally set up and stagger each other, heart yearn two still includes:

the cable cores are arranged in the center of the second core wire, the number of the cable cores is multiple, and the cable cores are arranged oppositely;

the first filler is twisted with the cable core;

the first shielding part is used for winding and shielding the first filler and the cable core;

the signal shielding unit coats the signal transmission unit;

an outer sheath, wherein the outer sheath extrudes the signal shielding unit.

2. The encoder cable of claim 1, wherein the second core further comprises a first shield and a first sheath, the first shield being wrapped by the second shield, and the second shield being wrapped by the first sheath.

3. The encoder cable of claim 1, wherein the cable core further comprises a second conductor and a second insulating material, the second conductor is disposed in the center of the cable core, and the second insulating material covers the second conductor.

4. The encoder cable of claim 1, wherein the signal transmission unit further comprises a core wire III, the core wire III is filled with a cotton rope, and the core wire I, the core wire II and the core wire III are untwisted and stranded into a cable.

5. The encoder cable of claim 1, wherein the signal shielding unit further comprises a first wrapping tape, a third shielding tape and a second wrapping tape, and the first wrapping tape wraps the signal transmission unit.

6. The encoder cable of claim 5, wherein the shield three is braided to shield the first tape, and the second tape is wrapped around the shield three.

7. The encoder cable of claim 1, wherein said first conductor is a type six soft copper conductor and said first insulating material is a DSMTPECM600-V material.

8. The encoder cable of claim 1, wherein the filler-one is filled with polypropylene bulked yarn and the shield-one is shielded with aluminum-plastic composite tape.

9. The encoder cable of claim 3, wherein the second conductor is a sixth type soft copper conductor, and the second insulating material is a polypropylene chemical foaming material.

10. The encoder cable of claim 5, wherein the first tape is PTFE tape, the third shield is tinned copper wire braided shield, and the second tape is non-woven tape.