CN106536384B

CN106536384B - Multifunctional belt

Info

Publication number: CN106536384B
Application number: CN201580034166.8A
Authority: CN
Inventors: 井上龙起; 中村晴彦
Original assignee: Gates Unitta Asia Co
Current assignee: Gates Unitta Asia Co
Priority date: 2014-07-04
Filing date: 2015-07-02
Publication date: 2019-12-20
Anticipated expiration: 2035-07-02
Also published as: JP6085034B2; WO2016002899A1; CN106536384A; TWI652418B; TW201608148A; JPWO2016002899A1

Abstract

The invention provides a multifunctional belt, wherein a long belt main body (70) is made of an elastic body. A plurality of high-strength core wires (71) are embedded in the belt body (70), extend in the longitudinal direction of the belt body (70), and are arranged in parallel to each other. The conductor core wires (72, 73) are embedded in the belt body (70) and extend in the longitudinal direction of the belt body (70), and the high-strength core wire (71) and the conductor core wires (72, 73) are alternately arranged in the width direction of the belt body (70).

Description

Multifunctional belt

Technical Field

The present invention relates to a multifunctional belt that can be used to move a movable rack in, for example, an automated warehouse.

Background

Conventionally, as a structure for driving a movable rack provided in an automated warehouse or the like, a structure is known in which a cable such as a power supply cable, which connects a drive motor mounted on the movable rack and a power supply provided outside the movable rack, is inserted through a cable support (bear) (patent document 1). The cable support body is configured by flexibly connecting a plurality of stopper (コマ) members, which form a space for inserting the cables, and can accommodate a plurality of cables and deform following the movement of the movable frame to protect the cables.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open publication No. 2011-

Disclosure of Invention

Problems to be solved by the invention

A structure in which the movable frame is driven by a power transmission belt may be employed. However, power supply/communication to/from the movable chassis requires an electric wire or a cable to be inserted into the cable support, and the use of both a belt and the cable support increases the size of the device for driving the movable chassis.

The present invention provides a multifunctional belt which can mechanically move a movable device such as a movable chassis without using a protective member such as a cable support and can supply power to and communicate with the movable device.

Means for solving the problems

The present invention provides a multifunctional tape, comprising: a long belt main body made of an elastic body; a plurality of high-strength core wires embedded in the belt main body, extending in the longitudinal direction of the belt main body, and arranged in parallel with each other; and a conductor provided in the belt body and extending in a longitudinal direction of the belt body.

Preferably, the conductor is a plurality of conductor core wires embedded in the belt body, and the high-strength core wires and the conductor core wires are alternately arranged in the width direction of the belt body. In this case, the high-strength core wire and the conductor core wire are preferably arranged so as to be in parallel straight contact with the surface of the belt body in the cross section of the belt body. Further, a plurality of conductor core wires may be provided between the high-strength core wires. Further, the high-strength core wire may be disposed at both ends in the cross section of the belt main body. Further, the conductor core wire may be covered with an insulator.

The conductor may be a conductor core wire embedded in the belt body, and the plurality of high-strength core wires may be arranged so as to cover the outer peripheral surfaces of 1 conductor core wire. Alternatively, the conductor may be a conductor core wire embedded in the belt body, and the plurality of conductor core wires may be arranged so as to cover the outer peripheral surfaces of the 1 high-strength core wires.

The conductor may be a wiring formed on the flexible printed wiring board, and in this case, the flexible printed wiring board may be attached to the surface of the tape main body.

Preferably, the conductor is a plurality of conductor core wires embedded in the belt body, and the conductor core wires have a lower conductor resistance value than the high-strength core wires. This makes it possible to supply high power. Preferably, the conductor core wire has a soft copper wire or a copper alloy wire.

Further, it is preferable that the conductor core wire is coated with a coating material that is not adhered to the elastic body of the belt main body. According to this configuration, even if the multifunctional belt is bent, since a relative displacement is generated between the elastic body of the belt main body and the conductor core wire, the conductor core wire is less likely to be damaged, and the durability of the multifunctional belt is improved. In this case, the coating material is preferably made of a material having a higher melting point than the elastomer of the tape main body. The coating material is made of, for example, a fluororesin.

The conductor core wire has, for example, any one of a single wire, a twisted wire (collective twisted wire, rope twisted wire), a shielded wire, a cable, and a shielded cable. More preferably, the elastomer of the belt body is supplemented with a conductive material. Thus, complicated signal communication can be performed by the conductor core wire, and measures against noise in the signal communication can be taken.

Preferably, the high-strength core wire of the multifunctional belt is designed such that a belt stretch change rate in a load control region of a belt in which a plurality of high-strength core wires and a plurality of conductor core wires are alternately arranged in a belt body made of an elastic body is 0.2% or less.

The hardness of the elastic body of the belt main body is, for example, in the range of a80 to a 95.

The belt body is shaped, for example, as a toothed belt or a flat belt.

Effects of the invention

According to the present invention, a multifunctional belt capable of mechanically moving a movable device such as a movable chassis without using a protective member such as a cable support and capable of supplying power and communicating with the movable device can be obtained.

Drawings

Fig. 1 is a diagram showing a schematic configuration of an automated warehouse using a multifunctional tape according to a first embodiment of the present invention.

Fig. 2 is a perspective view showing conductor core wires protruding from both ends of the belt main body.

Fig. 3 is a diagram showing a circuit including a conductor core wire.

Fig. 4 is a cross-sectional view of the multifunctional tape of the first embodiment.

Fig. 5 is an enlarged sectional view of the conductor core wire.

Fig. 6 is a cross-sectional view of the multifunctional tape of the second embodiment.

Fig. 7 is a cross-sectional view of a hybrid core wire.

Fig. 8 is a cross-sectional view of the multifunctional tape of the third embodiment.

Fig. 9 is a cross-sectional view showing a first example of the conductor core wire.

Fig. 10 is a cross-sectional view showing a second example of the conductor core.

Fig. 11 is a cross-sectional view showing a third example of the conductor core.

Fig. 12 is a cross-sectional view showing a fourth example of the conductor core.

Fig. 13 is a cross-sectional view showing a fifth example of the conductor core.

Fig. 14 is a diagram showing a method of a load withstand test of the multifunctional tape.

Fig. 15 is a graph showing the results of a load withstand test of the multifunctional tape.

Detailed Description

Hereinafter, the multifunctional tape according to the present invention will be described with reference to the illustrated embodiments. Fig. 1 shows a schematic configuration of an automated warehouse which is an example of use of a multifunction tape 50 according to a first embodiment of the present invention.

The movable frame 51 is lifted and lowered by the multifunctional tape 50. The movable frame 51 can be stopped on the stages S1 to S5 provided on the 1 st floor to the 5 th floor, and can transfer the containers C to and from the stages S1 to S5. An electromagnet 52 is provided on the movable frame 51, and a coupling member 53 to be attracted to the electromagnet 52 is provided at an end of the bottom plate of each of the stages S1 to S5. That is, the movable frame 51 can be fixed to the stages S1 to S5 by the electromagnet 52 and the coupling member 53 being attracted thereto.

Each of the stages S1 to S5 is provided with a roller conveyor 54 for moving the container C, and a motor 55 for rotationally driving the roller conveyor 54. Similarly, a roller conveyor 56 and a motor 57 for moving the container C are also provided on the movable frame 51. A barcode 58 is attached to an outer wall surface of the container C to identify the container C, and a barcode reader 59 for reading the barcode 58 is provided on the movable frame 51. In addition, a strain gauge type weight 61 is provided on a part of the roller conveyor 56 of the movable frame 51 in order to measure the weight of the container C placed on the roller conveyor 56.

The movable rack 51 is connected to one end of the multifunctional tape 50 by a jig 62, and the other end of the multifunctional tape 50 is connected to a jig 63 fixed to the floor surface of the automated warehouse. The multifunctional belt 50 is wound around a drive pulley 64, fixed pulleys 65 and 66, and movable pulleys 67 and 68. The multifunctional belt 50 is a toothed belt. That is, the drive pulley 64 and the fixed pulleys 65 and 66 are toothed pulleys, and the movable pulleys 67 and 68 are flat pulleys.

As described below, the high-strength core wire 71 and the conductor wires 72 and 73 (fig. 2 and 3) are embedded in the multifunctional belt 50, and the conductor wires 72 and 73 protrude from the end portion on the jig 63 side and are connected to the control unit 74. The control unit 74 is connected to a power source 75, and performs power supply and signal communication via the conductor cores 72, 73 as described below. In addition, the control unit 74 is also connected to a motor 76 for driving the drive pulley 64, and supplies/controls power to/from the motor 76.

The belt body 70 of the multifunctional belt 50 is made of an elastic material, and both ends thereof are removed to expose the power conductor core wire 72 and the signal conductor core wire 73 as shown in fig. 2. Each having a high strength cord 71 disposed therein. That is, the power conductor core 72 or the signal conductor core 73 is provided between two adjacent high-strength cores 71.

As shown in fig. 3, the power conductor core 72 is connected to the electromagnet 52 and the motors 55 and 57, and the signal conductor core 73 is connected to the barcode reader 59 and the weight meter 61. All the conductor cores 72 and 73 are connected to a power supply 75 via a control unit 74. That is, by supplying power to the motors 55 and 57 via the power conductor core 72, the containers C are transferred between the respective stages S1 to S5 and the movable frame 51, and are fixed to the conveyors 54 and 56. Power is also supplied to the electromagnet 52 via the power conductor core 72, and the movable frame 51 is fixed at the height positions of the stages S1 to S5. The power supply and signal communication to the bar code reader 59 are performed via the signal conductor core 73, and the container C is identified by the control unit 74. Power supply and signal communication to the weight meter 61 are also performed through the conductor core for signal 73, and the weight of the container C is measured by the control unit 74.

Fig. 4 is a cross-sectional view of the multifunctional tape 50 of the first embodiment. The multifunctional tape 50 has an elongated tape main body 70 made of an elastomer (thermoplastic resin). As the thermoplastic elastomer constituting the belt body 70, polyurethane elastomer, polyester elastomer, polyolefin elastomer, silicone elastomer, polyamide elastomer, polystyrene elastomer, or the like can be used, but polyurethane elastomer and polyester elastomer are preferable.

The high-strength core wire 71 and the conductor core wires 72 and 73 are embedded in the belt body 70 at a position close to the bottom surface 78 of the belt tooth 77. For the reason of manufacturing the multifunctional tape 50, a part of each of the high-strength core wire 71 and the conductor core wires 72 and 73 is exposed on the bottom surface 78. That is, in the present specification, "embedded" does not mean that the high-strength core wire 71 and the conductor core wires 72 and 73 are completely embedded in the belt body 70, and includes a case where the high-strength core wire and the conductor core wires 73 are partially exposed from the belt body 70.

The high-strength core wire 71 is, for example, a steel wire, but high-strength and high-elasticity core wires such as an aramid core wire, a carbon core wire, a PBO core wire, and a high-strength glass core wire can be used. The conductor cores 72, 73 are, for example, soft copper wires or copper alloy wires. The high-strength core wire 71 and the conductor core wires 72 and 73 are provided in plural numbers and arranged in parallel to each other. The high-strength core wires 71 and the conductor core wires 72 and 73 are alternately arranged at equal intervals in the width direction of the belt body 70, and the conductor core wire 72 or 73 is disposed between two adjacent high-strength core wires 71. The high-strength core wire 71 is disposed at both ends on the cross section of the belt main body 70.

The high-strength core wire 71 and the conductor core wires 72, 73 are located on a common plane on the face on the bottom face 78 side of the belt tooth 77, that is, the high-strength core wire 71 and the conductor core wires 72, 73 are aligned in parallel straight line contact with the bottom face (surface) 78 of the belt main body 70 in the cross section of the belt main body 70. The high-strength core wire 71 and the conductor core wires 72 and 73 extend in the longitudinal direction of the belt body 70 to reach both ends of the belt body 70. The thermoplastic resin is removed from both ends of the tape main body 70, so that the conductor cores 72 and 73 are exposed and connected to the electric components provided in the jigs 62 and 63. The high-strength core wires 71 do not protrude from both end surfaces of the belt main body 70.

The material, the outer diameter, and the number of the conductor cores 72, 73 are selected so as to have predetermined electrical characteristics (such as a conductor resistance value) in consideration of the power supplied to the drive motor 55 of the roller conveyor 54 and the drive motor 57 of the roller conveyor 56 via the control unit 74.

Fig. 5 is an enlarged sectional view of the conductor cores 72, 73. The conductor 21 of the conductor core wires 72, 73 is formed by twisting a plurality of element wires in a predetermined direction, and the outer peripheral surface thereof is covered with the insulator layer 22 (see fig. 9). That is, the conductor cores 72 and 73 have a structure called an aggregate twisted wire. The conductor cores 72 and 73 are protected by the insulator layer 22, so that the insulation is improved, but the insulator layer 22 may be omitted.

According to the present embodiment, the multifunctional belt 50 can be provided with a power transmission function for mechanically driving the movable frame 51 to ascend and descend, and a power supply function for a motor or the like for rotationally driving the roller conveyor for moving the container C. That is, a protective member such as a cable support for protecting the power feeding cable is not required, the movable device such as the movable frame 51 can be mechanically moved, and the structure for feeding power to and communicating with the movable device can be simplified and downsized.

Fig. 6 is a cross-sectional view of the multifunctional tape 50 of the second embodiment. The difference from the first embodiment is that a hybrid core wire 31 formed by combining a high-strength core wire and a conductor core wire is embedded in the belt body 70. As shown in fig. 7, the outer peripheral surface of the conductor core wire 32 of the stranded wire (collective twisted wire) is covered with the insulator layer 33, and further covered with the high-strength core wire 34 of the plurality of stranded wires (collective twisted wire). The hybrid core wires 31 are arranged at equal intervals in the width direction of the belt body 70.

According to the second embodiment, the same effects as those of the first embodiment are obtained, but since the hybrid core wires 31 are uniformly distributed in the width direction of the belt main body 70, the strength performance of the multifunctional belt 70 can be improved as compared with the first embodiment.

Further, as the configuration of the hybrid core wire 31, it is also possible to dispose the high-strength core wire on the center side and cover the outer peripheral surface of the high-strength core wire with a plurality of conductor core wires.

Fig. 8 is a cross-sectional view of the multifunctional tape 50 of the third embodiment. The difference from the first and second embodiments is that the flexible printed wiring board 41 having a conductor is attached to the back surface (front surface) 80 of the tape main body 70 without burying a conductor core wire in the tape main body 70. That is, the wiring 42 formed on the flexible printed wiring board 41 is a conductor extending in the longitudinal direction of the tape main body 70 and functions electrically as the multifunctional tape 50 as in the case of the conductor core wires 72 and 73 in the first and second embodiments, but since the flexible printed wiring board 41 is attached to the back surface 80 of the tape main body 70, the change in the tensile force and the compressive force acting on the flexible printed wiring board 41 is more severe than that in the first embodiment shown in fig. 2, and the flexible printed wiring board 41 needs flexibility in accordance with the change.

The belt main body 70 of the multifunctional belt 50 of the first to third embodiments is shaped as a toothed belt, but the present invention is not limited to the toothed belt, and may be applied to a structure in which the belt main body is shaped as a flat belt.

Fig. 9 to 13 show examples of the conductor core wire.

Fig. 9 is a cross-sectional view showing a first example of the conductor cores 72 and 73 used in the first embodiment. In this example, the outer peripheral surface of the conductor 81 is a stranded wire (collective twisted wire) of an insulating coating covered with an insulator 82, and the conductor 81 is formed by twisting a plurality of element wires of a soft copper wire or a copper alloy wire shown in table 1 in a fixed direction. That is, in the case of the annealed copper wire, for example, 19 pieces of the plain wires having a diameter of 0.08mm are twisted to form a conductor core wire having a diameter of 0.40 mm. In the case of a copper alloy wire, for example, a conductor core wire having a diameter of 0.31mm or 0.39mm is formed by stranding 28 or 44 element wires having a diameter of 0.05 mm. The conductor resistance values based on jis c3005 of the annealed copper wire and the copper alloy wire are shown in table 1, and are about 10 times smaller than those of the steel core wire in the case of a diameter of 0.4mm, for example. Therefore, the power supply of high power can be performed by using the conductor core wire formed of the soft copper wire or the copper alloy wire, and is particularly advantageous in the power conductor core wire 72.

In table 1, steel core wires are shown for comparison of conductor resistance values with annealed copper wires and copper alloy wires. The steel core wire is constituted by 3 strands obtained by twisting 3 plain wires having a diameter of 0.08mm, 7 strands obtained by twisting 3 plain wires having a diameter of 0.06mm, and 7 strands obtained by twisting 3 plain wires having a diameter of 0.08 mm. That is, the steel core wires shown in table 1 were all formed by stranded wires (rope twisted wires).

[ Table 1]

In addition, based on JIS C3005

The insulator 82 is a fluororesin (such as ETFE) that does not melt with the urethane resin, which is the elastomer of the belt body 70, and does not adhere to the urethane resin when the belt is molded. That is, the insulator 82 as the coating material is made of a material having a higher melting point than the urethane resin. By using such an insulator 82, even in a state where the conductor core wires 72, 73 are exposed from the belt main body 70, the conductor core wires 72, 73 are not short-circuited. Further, since the insulator 82 is not adhered to the belt body 70, the conductor cores 72 and 73 can be displaced relative to the belt body 70. Therefore, even if the multifunctional belt 50 is repeatedly bent by the drive pulley 64, the fixed pulleys 65, 66, and the movable pulleys 67, 68, the load acting on the conductor wires 72, 73 can be suppressed, and the durability of the multifunctional belt 50 can be improved.

In the signal conductor core wire 73, it is necessary to take measures against noise so that the signal to be transmitted does not contain noise. Therefore, a conductive material such as carbon is added to the elastic body of the belt main body 70, and the belt main body 70 is imparted with conductivity. Therefore, according to the multifunctional tape 50 of the present embodiment, no error occurs in reading of the barcode reader 59, measurement of the weight scale 61, or the like.

Further, a fluororesin is suitably used as a material of the insulator 82, but as other usable materials, silicone rubber or polyimide resin can be cited. As the fluororesin, PTFE, PFA, FEP, PVDF, or the like can be used in addition to ETFE.

Fig. 10 is a cross-sectional view showing a stranded wire of a cord twisted wire of a second example of the conductor core wires 72, 73. The conductor 81 in this example has a stranded wire (rope twisted wire) in which 7 strands 83 obtained by twisting 7 plain wires having a diameter of 0.08mm are twisted together, for example, and the outer peripheral surface of the conductor 81 is covered with an insulator 82.

Fig. 11 is a cross-sectional view of a shield wire showing a third example of the conductor cores 72 and 73. This example has the following structure: the outer peripheral surface of the conductor 81 made of a soft copper wire or a copper alloy wire shown in table 1 is covered with the insulator 82, the outer side of the insulator 82 is covered with the metal shield 84, and the outer side of the metal shield 84 is covered with the sheath (sheath)85 of an insulating material. That is, the conductor 81 is covered with the insulator 82 and the sheath 85, and the sheath 85 has a melting point higher than that of the elastic body of the belt main body 70 and does not adhere to the elastic body of the belt main body. By using such a shielded wire, countermeasures against noise in signal communication are more comprehensive.

Fig. 12 is a cross-sectional view of a cable showing a third example of the conductor cores 72 and 73. This example has the following structure: 3 strands (collective twisted strands) 86 having the same structure as that of fig. 9 are twisted, the outer sides of the strands 86 are covered with a paper tape 87, and the outer peripheral surface of the paper tape 87 is further covered with a sheath 88 of an insulating material. With such a cable, noise measures can be improved as with the shielded wire.

Fig. 13 is a cross-sectional view of a cable showing a fourth example of the conductor cores 72 and 73. This example has the following structure: 3 twisted wires (collective twisted wires) 86 having the same structure as that of fig. 9 are twisted, the outer sides of the twisted wires 86 are covered with paper tapes 87, the outer sides of the paper tapes 87 are covered with the metal shield 84, and the outer peripheral surface of the shield 84 is covered with a sheath 88 of an insulating material. With such a cable, noise measures can be improved as with the shielded wire.

As described above, the multifunctional tape 50 according to the first to third embodiments has the conductor cores 72 and 73 or the wiring 42 as the conductors, and therefore, it is possible to supply power to various driving mechanisms via the multifunctional tape 50 and to transmit an electric signal to the control device. Further, a protective member such as a cable support can be omitted, and the device provided with the multifunctional tape 50 can be downsized.

Since the conductor cores 72, 73 are formed using soft copper wires or copper alloy wires, high-power supply can be performed. Therefore, particularly, high output and high speed response of the motor 57 mounted on the movable frame 51 can be achieved, and the time required for the container C to enter and exit the warehouse (the first to fifth stages S1 to S5) can be shortened. Further, since the electromagnet 52 of the movable frame 51 can be used as an electromagnet with high output, the movable frame 51 can be fixed, the container C can be fixed, and the container C can be transported by using the electromagnetic force. Further, various functions such as opening and closing of a lighting fixture or a door, and movement of an arm and the like can be adopted.

Further, since complicated signal communication is possible, the operation of the movable frame 51 can be finely controlled, and the reading of the barcode reader 59 and the measurement accuracy of the weight scale 61 can be improved. Further, since the conductor cores 72 and 73 are covered with the insulator, occurrence of accidents such as short-circuit, electric shock, and fire can be prevented, safety can be improved, and maintenance of the equipment can be improved. In addition, the insulating work in the terminal working of the conductor cores 72, 73 can be simplified.

(examples)

An endless multifunctional belt having substantially the same structure as the multifunctional belt 50 of the first embodiment was produced, and was mounted on a pair of pulleys to perform a durability test. The driving pulley and the driven pulley are toothed pulleys having 18 teeth and a trapezoidal tooth profile with a pitch of 5 mm. The rotation speed of the drive pulley was determined to be 4000 rpm. As the sample belt, a toothed belt having trapezoidal teeth with a pitch of 5mm, a circumferential length of 600mm, a width of 15mm, and formed into an endless belt by a joining process was used, and the mounting tension was determined to be 100N.

[ Table 2]

As shown in table 2, in the sample tape 1, the conductor core wire was formed of a copper alloy wire, and was formed by twisting 28 element wires having a diameter of 0.05mm, and the outer peripheral surface thereof was not covered with an insulator, and isocyanate bonding treatment was performed for bonding the tape main body to polyurethane. That is, the sample tape 1 is not included in the present invention, but is a comparative example.

The conductor core wire of the sample tape 2 was made of a soft copper wire, and formed by twisting 19 plain wires having a diameter of 0.08mm, and the outer peripheral surface thereof was covered with an insulator made of ETFE. The sample tape 3 has the same conductor core as the sample tape 2, but the hardness of the material of the tape main body, i.e., the urethane resin, is lower than that of the sample tape 2. The conductor core wire of the sample tape 4 was made of a copper alloy wire, 28 element wires having a diameter of 0.05mm were twisted and molded, and the outer peripheral surface thereof was covered with an insulator made of ETFE, and the urethane resin of the tape main body was the same as that of the sample tape 3. That is, the sample tapes 2, 3, 4 are examples of the present invention. In addition, in the sample tapes 2 to 4, the hardness of the elastic body of the tape main body measured by the test based on the JISK6253 standard was in the range of a80 to a 95.

In the durability test, a current is passed through the conductor core wire, and the presence or absence of breakage of the conductor core wire is detected by a tester. The number of times of bending of the sample belt in the detection of the cutting is a value obtained by counting 1 time for each half-cycle (180 °) of bending of the driving pulley and the driven pulley, when the sample belt rotates 1 turn.

As shown in table 2, the sample tape 1 was cut by bending less than 1 ten thousand times. That is, although the cutting of the conductor core wire was confirmed at the mark portion (pip) and the root portion, it is presumed that the cutting is caused by the stress concentration. The sample tape 2 is cut by bending less than 200 to 500 ten thousand times. This is considered to be because slipping occurs between the insulator of ETFE and the belt body, and therefore stress concentration is relaxed, and durability is improved as compared with the sample belt 1. The sample tape 3 is cut by bending less than 800 to 1500 ten thousand times. This is considered to be because the stress acting on the conductor core wire is further relaxed by making the hardness of the polyurethane of the belt main body softer than that of the sample belt 2. The sample tape 4 was not cut even when it was bent 2000 ten thousand times. This is considered because the bending fatigue property is improved by using the conductor core wire as the copper alloy wire.

In designing the high-strength core wire of the multifunctional tape, it is considered that the expansion and contraction rate of the multifunctional tape is preferably considered in order to avoid fatigue failure of the conductor core wire due to expansion and contraction of the multifunctional tape. Therefore, a load resistance test of the multifunctional tape was performed, and it was tried to design a high-strength core wire having a tensile change rate of the sample tape of 0.2% or less with respect to the load generated on the sample tape. The structure of the sample tape used in the load resistance test is as follows.

The belt body is made of polyurethane resin, the belt width is 15mm, and the distance between belt marking lines is 100 mm.

The structure of the high-strength core wire is 7 multiplied by 3 multiplied by 0.08mm steel core wires, and 4S twisted core wires and 4Z twisted wires are alternately arranged in the width of 15 mm.

The conductor core wires were arranged in an alternating manner with 7 pieces each of the conductor core wires and the high-strength core wires.

Conductor core wire 1: ETFE coated copper alloy core wire. 28 plain wires with the diameter of 0.05mm are twisted into a stranded wire.

Conductor core wire 2: ETFE coated soft copper core wire. 19 plain wires with the diameter of 0.08mm are twisted into a stranded wire.

Referring to fig. 14, a method of a load withstand test of the multifunctional tape will be described. Both ends of the sample tape B are gripped by the clamps 91 and 92, and a tensile load is applied to the sample tape B via the clamps 91 and 92. The tensile load has a period of 20 Hz. Normally, the belt installation tension is set to be 0N or more at all times on the slack side of the belt when a load is applied to the belt. Therefore, in the present load-proof test, the tension on the slack side was determined to be 20N. The amplitude of the load is set to 100N, the magnitude of the load is varied in various ways as described below, and the sensor 93 detects the potential difference between both ends of the sample tape B, thereby determining whether or not the conductor core wire is broken.

The results of the load endurance test of the multifunctional tape will be described with reference to fig. 15. When the load control region is set to 700N to 20N, the sample tape B has an elongation of 0.60 to 0.70% as shown by F1. In the sample tape B having the conductor core 1, the cutting of the conductor core 1 is detected in about 10 to 20 ten thousand cycles, but in the sample tape B having the conductor core 2, the cutting of the conductor core 2 is detected in 7 to 35 ten thousand cycles. When the load control region is 475N to 20N, the sample tape B has an elongation of 0.40 to 0.50% as indicated by F2. In addition, in the sample tape B having the conductor core 1, the cutting of the conductor core 1 is detected in 90 to 210 ten thousand cycles, but in the sample tape B having the conductor core 2, the cutting of the conductor core 2 is detected in 20 to 50 ten thousand cycles.

When the load control region is set to 350N to 20N, the sample tape B has an elongation of 0.30 to 0.40% as shown by F3. In the sample tape B having the conductor core 2, the cutting of the conductor core 2 is detected in about 25 to 80 ten thousand cycles, but in the sample tape B having the conductor core 1, the cutting of the conductor core 1 is detected in 300 ten thousand cycles, or the cutting is not performed even if the number exceeds 1500 ten thousand cycles. When the load control region is set to 220N to 20N, the sample tape B has an elongation of 0.10 to 0.20% as shown by F4. In addition, in the sample tape B having the conductor core 1, the cutting of the conductor core 1 was not detected even if the number of cycles exceeded 1500 ten thousand, and in the sample tape B having the conductor core 2, the cutting was not detected even if the number of cycles exceeded 1000 ten thousand.

From the results of the above-described load-bearing tests, it was confirmed that designing the high-strength core wire of the multifunctional belt so that the belt elongation change rate in the load control region of the belt in which the high-strength core wire and the conductor core wire are alternately arranged in plural numbers in the belt main body made of the elastic body is 0.2% or less is effective for improving the durability under the use conditions.

Description of reference numerals

50 multifunctional belt

70 belt body

71 high strength core wire

72. 73 conductor core wire

Claims

1. A multifunctional tape is characterized by comprising:

a long belt main body made of an elastic body;

a plurality of high-strength core wires embedded in the belt body, extending in a longitudinal direction of the belt body, and arranged in parallel with each other; and

an electrical conductor provided in the belt body and extending in a length direction of the belt body,

the conductor is a plurality of conductor core wires embedded in the belt main body, the conductor core wires have a lower conductor resistance value than the high-strength core wires,

the conductor core wire is covered with a coating material that is not adhered to the elastic body of the belt main body, and can be displaced relative to the belt main body,

the conductor core wire is closely coated with the coating material as a resin material without a gap.

2. The multifunctional tape according to claim 1,

the conductor is a plurality of conductor core wires embedded in the belt main body, and the high-strength core wires and the conductor core wires are alternately arranged in the width direction of the belt main body.

3. The multifunctional tape according to claim 2,

the high-strength core wire and the conductor core wire are arranged in parallel straight line contact with the surface of the belt body in the cross section of the belt body.

4. The multifunctional tape according to claim 2,

and a plurality of conductor core wires are arranged between the high-strength core wires.

5. The multifunctional tape according to claim 2,

the high-strength core wire is disposed at both ends in a cross section of the belt main body.

6. The multifunctional tape according to claim 2,

the conductor core wire is covered with an insulator.

7. The multifunctional tape according to claim 1,

the conductor is a conductor core wire embedded in the belt body, and the plurality of high-strength core wires are arranged so as to cover the outer peripheral surfaces of 1 conductor core wire.

8. The multifunctional tape according to claim 1,

the conductor is a conductor core wire embedded in the belt body, and the plurality of conductor core wires are arranged so as to cover the outer peripheral surfaces of 1 high-strength core wire.

9. The multifunctional tape according to claim 1,

the conductor is a wiring formed on a flexible printed wiring board, and the flexible printed wiring board is attached to the surface of the tape main body.

10. The multifunctional tape according to claim 1,

the conductor core wire is provided with a soft copper wire or a copper alloy wire.

11. The multifunctional tape according to claim 1,

the coating material is made of a material having a higher melting point than the elastomer of the belt body.

12. The multifunctional tape according to claim 11,

the coating material is composed of fluororesin.

13. The multifunctional tape according to claim 1,

the conductor core wire has any one of a single wire, a stranded wire as an integrated twisted wire, a stranded wire as a rope twisted wire, a shield wire, a cable, and a cable with a shield.

14. The multifunctional tape according to claim 1,

the elastomer of the belt body is added with a conductive material.

15. The multifunctional tape according to claim 1,

possess high strength core wire, high strength core wire design is: a belt stretch change rate in a load control region of a belt in which a plurality of high-strength core wires and a plurality of conductor core wires are alternately arranged in a belt body made of an elastic body is 0.2% or less.

16. The multifunctional tape according to claim 1,

the elastomer of the belt main body has a hardness of A80 to A95.

17. The multifunctional tape according to claim 1,

the belt body is shaped as a toothed belt.

18. The multifunctional tape according to claim 1,

the belt body is shaped as a flat belt.