Flat strip-shaped flexible cable

Abstract

The invention provides a flat strip-shaped flexible cable, the flat strip-shaped flexible cable is provided with a bending surface, and a plurality of sub-runners are sequentially formed in the position, close to the bending surface, of the flat strip-shaped flexible cable; when the flat strip-shaped flexible cable is bent, a corresponding pre-bending section can be formed, and pressure intensity change is generated in the sub-runner at the pre-bending section, so that the flat strip-shaped flexible cable tends to be bent along a preset direction or has a trend of being bent along the preset direction, and the driving force required for bending towards the preset direction is reduced, so that the bending efficiency of the flat strip-shaped flexible cable is improved, and the service life of the flat strip-shaped flexible cable is prolonged. The influence on the motion precision and efficiency of equipment is avoided, the phenomena of signal transmission performance degradation and even fracture risk caused by the acceleration of cable structure fatigue due to repeated stress concentration are avoided, and the high-efficiency, reliable and long-service-life operation requirements of the equipment are met.

Description

Technical Field

[0001] The invention relates to a cable, in particular to a flat ribbon-shaped flexible cable. Background Art

[0002] In wafer inspection equipment, high-precision inspection and rapid motion control place stringent demands on the flexibility and deformation resistance of transmission cables. Cables need to be bent at high frequencies with a small radius in a narrow space. Traditional round cables are difficult to adapt to high-frequency reciprocating bending motion scenarios due to their high cross-sectional stiffness and large bending radius, while flat ribbon cables have reduced bending resistance to a certain extent due to their thin design. As the integration of wafer inspection equipment increases, cables need to carry more optical fibers or wires, resulting in a significant increase in thickness. At the same time, the rigidity of the cable cross section increases, and the driving force required for bending increases simultaneously, which not only affects the accuracy and efficiency of equipment movement, but also accelerates cable structure fatigue due to repeated stress concentration, causing degradation of signal transmission performance and even the risk of breakage, and cannot meet the equipment's requirements for efficient, reliable and long-life operation.

[0003] The information disclosed in the background technology section of the present invention is only intended to deepen the understanding of the general background technology of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to those skilled in the art. Summary of the invention

[0004] Based on this, it is necessary to provide a flat ribbon flexible cable to address the problem that the driving force required for bending of current cables increases simultaneously.

[0005] The above purpose is achieved through the following technical solutions: A flat ribbon flexible cable, the flat ribbon flexible cable having a bending surface, wherein a plurality of shunt channels are sequentially formed on the flat ribbon flexible cable near the bending surface; when the flat ribbon flexible cable is bent, a corresponding pre-bending section can be formed, and a pressure change occurs in the shunt channel at the pre-bending section, so that the flat ribbon flexible cable is bent in a preset direction or has a tendency to bend in a preset direction.

[0006] In one of the embodiments, the flat ribbon flexible cable has the bending surfaces on both opposite sides. When the flat ribbon flexible cable is bent, a pressure difference is generated in the branch channel near one of the bending surfaces and in the branch channel near the other bending surface at the pre-bending section.

[0007] In one embodiment, the flat ribbon flexible cable is further provided with a collecting channel, and three adjacent flow diverting channels near one of the bending surfaces are respectively P n , P n+1 , the three adjacent flow paths near another bending surface are Qn , Q n+1 The collecting channels are connected to P n , Q n , Q n+1 , P n+1 , n is a positive integer; At the pre-bending section, P n Inside and Q n A pressure difference is generated inside At the front side or the rear side of the pre-bending section, the pressure in the collecting channel is equal, so that the pressure in the corresponding branching channel is equal.

[0008] In one embodiment, the flat ribbon flexible cable is further provided with two collecting channels, and the four adjacent flow diverter channels near one of the bending surfaces are P and P, respectively. n , P n+1 , P n+2 , P n+3 , the four adjacent flow paths near another bending surface are Q n , Q n+1 , Q n+2 , Q n+3 , one of the collector channels is connected to P n , Q n , Q n+1 , Q n+2 , P n+2 , P n+3 , the other collector channel is connected to Q n , Q n+1 , P n+1 , P n+2 , P n+3 , Q n+3 , n is a positive integer; At the pre-bending section, P n Inside and Q n The pressure difference generated inside n+1 Inside and Q n+1 A pressure difference is generated inside At the front side or the rear side of the pre-bending section, the pressure in the collecting channel is equal, so that the pressure in the corresponding branching channel is equal.

[0009] In one embodiment, the collecting channel is provided with a flowing medium, a movable part capable of moving along the collecting channel, and an obstruction part for obstructing the movable part, n With Q n The obstruction portion is provided in the collecting channel between the two.

[0010] In one embodiment, the obstruction portion has a bidirectional obstruction effect on the movable member. n+1 With Qn+1 The obstruction portion is not provided in the collecting channel between the two.

[0011] In one embodiment, the obstruction portion has a one-way obstruction effect on the movable member. n+1 With Q n+1 The obstruction portion is arranged in the collecting channel between the two.

[0012] In one embodiment, the obstruction portion includes a plurality of obstructing bodies sequentially arranged along the collecting channel, and in the flow direction of the flowing medium, the obstructing force generated by the obstructing bodies on the movable part gradually decreases.

[0013] In one embodiment, the obstruction body is made of elastic material. When the force applied by the movable part to the obstruction body is less than or equal to a preset value, the obstruction body obstructs the movable part. When the force applied by the movable part to the obstruction body is greater than the preset value, the obstruction body stops obstructing the movable part.

[0014] In one embodiment, the outer side of the obstruction body is fixed to the inner wall of the collecting channel, and the inner side of the obstruction body is inclined toward the center of the collecting channel and away from the flow direction of the flowing medium.

[0015] The beneficial effect of the present invention is that when the flat ribbon flexible cable is bent, a pressure change occurs in the branch channel at the pre-bending section, and a pressure difference is generated inside the two sides of the flat ribbon flexible cable, so that the flat ribbon flexible cable is bent along a preset direction or has a tendency to bend along a preset direction, so as to reduce the driving force required for bending in the preset direction, avoid affecting the movement accuracy and efficiency of the equipment, avoid the phenomenon of accelerating cable structure fatigue due to repeated stress concentration, causing signal transmission performance degradation or even the risk of breakage, and meet the equipment's requirements for efficient, reliable and long-life operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 An axonometric view of a flat ribbon flexible cable provided by an embodiment of the present invention; Figure 2 for Figure 1 Partial parts exploded view of medium flat ribbon flexible cable; Figure 3 for Figure 2 Side view of the middle flat ribbon cable with the side cover removed; Figure 4 for Figure 3 A partial enlarged view of the middle A; Figure 5 for Figure 3 Structural deformation diagram of medium flat ribbon flexible cable; Figure 6 for Figure 5A partial enlarged view of point B in the middle; Figure 7 for Figure 2 A partial enlarged view of point C in the middle; Figure 8 for Figure 2 A partial enlarged view of point D in the middle; Fig. 9 for Figure 2 Structural deformation diagram of medium flat ribbon flexible cable; Fig.10 for Fig. 9 Side view of the middle flat ribbon cable with the side cover removed; Fig.11 for Fig.10 A partial enlarged view of point E in the middle.

[0017] in: 100, flat ribbon flexible cable; 101, conductor; 102, sheath; 103, top cover; 104, first half channel; 105, side cover; 106, second half channel; 107, side hole; 111, partition net; 112, side plate; 113, convex plate; 114, gap; 200, branch channel; 300, collecting channel; 301, movable part; 302, obstruction part; 303, obstruction body. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0019] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in the present invention, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0020] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0021] The embodiment of the present invention provides a flat ribbon flexible cable, see Figures 1 to 11 The flat ribbon flexible cable 100 has a bending surface, and a plurality of shunt channels 200 are sequentially formed near the bending surface of the flat ribbon flexible cable 100; when the flat ribbon flexible cable 100 is bent, a corresponding pre-bending section can be formed, and a pressure change occurs in the shunt channel 200 at the pre-bending section, so that the flat ribbon flexible cable 100 is bent along a preset direction or has a tendency to bend along a preset direction.

[0022] When the flat ribbon flexible cable 100 is bent, a pressure change occurs in the shunt channel 200 at the pre-bending section, and a pressure difference is generated inside the two sides of the flat ribbon flexible cable 100, so that the flat ribbon flexible cable 100 is bent in a preset direction or has a tendency to bend in a preset direction, so as to reduce the driving force required for bending in the preset direction, avoid affecting the movement accuracy and efficiency of the equipment, avoid the phenomenon of accelerating cable structure fatigue due to repeated stress concentration, causing signal transmission performance degradation or even breakage risk, and meet the equipment's requirements for efficient, reliable and long-life operation.

[0023] The preset direction includes two directions. For a section of flat ribbon flexible cable 100, the first preset direction is: the flat ribbon flexible cable 100 bends upward, that is, its upper surface contracts and its lower surface expands; the second preset direction is: the flat ribbon flexible cable 100 bends downward, that is, its upper surface expands and its lower surface contracts. In addition, the upper or lower surface of the flat ribbon flexible cable 100 is a bending surface, and the bending can be facilitated by setting the diverter 200.

[0024] Among them, when the flat ribbon flexible cable 100 has only one bending surface, that is, only one side has multiple shunt channels 200, the pressure change in the shunt channel 200 on this side is controlled, and the other side of the flat ribbon flexible cable 100 is at normal pressure, so a pressure difference is generated on both sides. Specifically, the pressure in the shunt channel 200 increases or decreases, and the purpose of bending the cable with effort can be achieved as long as the pressure change occurs. When the pressure in the shunt channel 200 increases, the side of the flat ribbon flexible cable 100 expands and the opposite side contracts. When the pressure in the shunt channel 200 decreases, the side of the flat ribbon flexible cable 100 contracts and the opposite side expands. As for how to change the pressure in the shunt channel 200, the flowing medium therein can be continuously introduced to increase pressure, the flowing medium therein can be continuously extracted to reduce pressure, the flowing medium therein can be heated to increase pressure, the flowing medium therein can be cooled to reduce pressure, and other methods that can achieve pressure changes in the flowing medium in the shunt channel 200.

[0025] Preferably, both opposite sides of the flat ribbon flexible cable 100 have bending surfaces. When the flat ribbon flexible cable 100 is bent, a pressure difference is generated in the shunt channel 200 near one of the bending surfaces and in the shunt channel 200 near the other bending surface at the pre-bending section.

[0026] Compared with setting the shunt channel 200 on one side of the flat ribbon flexible cable 100, setting the shunt channels 200 on both sides and generating a pressure difference in the shunt channels 200 corresponding to the pre-bending section makes it easier to bend the flat ribbon flexible cable 100.

[0027] The upper and lower surfaces of the flat ribbon-shaped flexible cable 100 are both covered with a top cover 103. At the same time, the upper and lower surfaces of the flat ribbon-shaped flexible cable 100 are both bending surfaces, so as to facilitate bidirectional bending of the flat ribbon-shaped flexible cable 100 and expand the bending use range.

[0028] When the flat ribbon flexible cable 100 is bent, the diverter channels 200 on both sides generate a pressure difference. Specifically, the diverter channel 200 on one side has a first positive pressure, and the diverter channel 200 on the other side has a second positive pressure, normal pressure or negative pressure, wherein the first positive pressure is greater than the second positive pressure; or the diverter channel 200 on one side has a normal pressure, and the diverter channel 200 on the other side has a negative pressure; or the diverter channel 200 on one side has a first negative pressure, and the diverter channel 200 on the other side has a second negative pressure, wherein the absolute value of the first negative pressure is less than the absolute value of the second negative pressure.

[0029] Preferably, see Figure 3 , Figure 4 The flat ribbon flexible cable 100 is also provided with a collecting channel 300, and three adjacent branching channels 200 near one of the bending surfaces are P n , P n+1, the three adjacent flow paths 200 near another bending surface are Q n , Q n+1 , the collecting channel 300 is connected to P in sequence n , Q n , Q n+1 , P n+1 , n is a positive integer; At the pre-bending section, P n Inside and Q n A pressure difference is generated inside At the front side or the rear side of the pre-bending section, the pressure in the collecting channel 300 is equal, so that the pressure in the corresponding branching channel 200 is equal.

[0030] By providing a collecting channel 300 with an S-shaped periodic bend, the corresponding branching channels 200 are connected in sequence, so that the P at the pre-bending section n Inside and Q n A pressure difference is generated inside the flat ribbon flexible cable 100 to generate a pressure difference inside the two sides of the flat ribbon flexible cable 100, so that the flat ribbon flexible cable 100 is bent along a preset direction or has a tendency to bend along a preset direction, so as to reduce the driving force required for bending toward the preset direction.

[0031] in, Figure 3 for Figure 2 The side view after the side cover 105 is removed, the left side is a side view from right to left, and the right side is a side view from left to right. The middle of the two side views is the lower surface of the flat ribbon flexible cable 100, and the left and right sides are the upper surface of the flat ribbon flexible cable 100. The collecting channels 300 are all bent in an S shape to connect the corresponding branch channels 200 respectively. Specifically, as shown in FIG. Figure 4 In the figure, the collecting channel 300 sequentially connects P1, Q1, Q2, P2, P3, Q3, Q4, P4, ...

[0032] For example, at this time, the pre-bending section of the flat ribbon flexible cable 100 is the P3-Q3 section, and a pressure difference is generated in P3 and Q3. Moreover, on the rear side of P3-Q3, that is, the pressures in P1, Q1, Q2, P2, and P3 are equal, and the pressures in the corresponding manifolds 300 are equal, and on the front side of P3-Q3, that is, the pressures in Q3, Q4, P4, ... are equal, and the pressures in the corresponding manifolds 300 are equal.

[0033] As a structural variation of the present invention, see Figure 5 , Figure 6 The flat ribbon flexible cable 100 is also provided with two collecting channels 300, and the four adjacent branching channels 200 near one of the bending surfaces are P n , P n+1 , P n+2 , P n+3, the four adjacent flow paths 200 near another bending surface are Q n , Q n+1 , Q n+2 , Q n+3 , one of the collecting channels 300 is connected to P n , Q n , Q n+1 , Q n+2 , P n+2 , P n+3 , another collector channel 300 is connected to Q n , Q n+1 , P n+1 , P n+2 , P n+3 , Q n+3 , n is a positive integer; At the pre-bending section, P n Inside and Q n The pressure difference generated inside n+1 Inside and Q n+1 A pressure difference is generated inside At the front side or the rear side of the pre-bending section, the pressure in the collecting channel 300 is equal, so that the pressure in the corresponding branching channel 200 is equal.

[0034] By setting another type of S-shaped periodically bent collecting channel 300, the corresponding branching channels 200 are connected in sequence, so that the P at the pre-bending section n Inside and Q n The pressure difference, P n+1 Inside and Q n+1 A pressure difference is generated inside the flat ribbon flexible cable 100, so as to generate two continuous pressure differences inside the two sides of the flat ribbon flexible cable 100, so as to further reduce the driving force required for bending toward a preset direction.

[0035] in, Figure 5 for Figure 2 The side view after the side cover 105 is removed, the left side is a side view from right to left, and the right side is a side view from left to right. The middle of the two side views is the lower surface of the flat ribbon flexible cable 100, and the left and right sides are the upper surface of the flat ribbon flexible cable 100. The collecting channels 300 are all bent in an S shape to connect the corresponding branch channels 200 respectively. Specifically, as shown in FIG. Figure 6 In the figure, the collecting channel 300 sequentially connects P1, Q1, Q2, Q3, P3, P4, P5, Q5, Q6, ...

[0036] For example, at this time, the pre-bending sections of the flat ribbon flexible cable 100 are P4-Q4 and P5-Q5 sections, and a pressure difference is generated in P4 and Q4, and a pressure difference is generated in P5 and Q5, that is, two continuous pressure differences are generated. Moreover, on the rear side of P4-Q4, that is, the pressures in P1, Q1, Q2, Q3, P3, P4, and P5 are equal, and the pressures in the corresponding manifolds 300 are equal, and on the front side of P5-Q5, that is, the pressures in Q5, Q6, etc. are equal, and the pressures in the corresponding manifolds 300 are equal.

[0037] Preferably, a flow medium, a movable member 301 capable of moving along the flow collecting channel 300, and an obstruction portion 302 for obstructing the movable member 301 are provided in the flow collecting channel 300. n With Q n An obstruction portion 302 is disposed in the collecting channel 300 .

[0038] When the movable member 301 moves to P n With Q n When the moving part 301 is in the collecting channel 300, it is blocked by the blocking part 302 and stops moving. The pressure in the collecting channel 300 located behind the movable part 301 increases, so that P n Inside and Q n A pressure difference is generated inside the flat ribbon flexible cable 100, so that the flat ribbon flexible cable 100 is bent along a preset direction or has a tendency to bend along a preset direction, so as to reduce the driving force required for bending toward the preset direction.

[0039] Among them, in the wafer inspection equipment, the positions where the flat ribbon flexible cable 100 is bent are sequential and continuous, so the movement of the movable part 301 in the collecting channel 300 is also sequential and continuous. The pre-bending section is a section of the flat ribbon flexible cable 100 that needs to be bent at a certain moment. In addition, the moving speed and position of the movable part 301 can be controlled by controlling the flow velocity and pressure of the flowing medium in the collecting channel 300, so that the positions of the movable parts 301 in the two collecting channels 300 are basically the same, thereby adapting to the flat ribbon flexible cable 100 to produce a pre-bending section at the desired position, that is, when the movable part 301 moves to a certain place, the section is the pre-bending section.

[0040] The obstruction part 302 is made of elastic materials such as rubber or silicone, so that it can obstruct the movable part 301 and can also deform under the pressure of the flowing medium to allow the movable part 301 to pass. In addition, by setting the control circuit and the specific size, material and other parameters of the obstruction part 302, the timing of bending the flat ribbon flexible cable 100 can be matched with the timing of the movable part 301 being obstructed. Specifically, the time period from the obstruction to the passage of the movable part 301 and the time period from the bending to the flat ribbon flexible cable 100 are matched. Preferably, the movable part 301 starts to be blocked before the flat ribbon flexible cable 100 starts to bend, so as to achieve the purpose of bending the flat ribbon flexible cable 100 with less effort.

[0041] The flowing medium may be water, ethylene glycol aqueous solution, mineral oil, synthetic oil or silicone oil, etc., so as to cool the flat ribbon flexible cable 100 and ensure its signal transmission performance. The movable part 301 may be a sphere or a cylinder matching the cross section of the collecting channel 300, so that the movable part 301 can move along the collecting channel 300 and can separate the collecting channel 300 into two sections with different pressures.

[0042] Among them, see Figure 1 , Figure 2 The flat ribbon flexible cable 100 includes an internal conductor 101 and a sheath 102 formed on the outside of the conductor 101 by a thermoplastic process. The sheath 102 is in a flat ribbon shape as a whole. The shunt channel 200 is formed by the upper or lower surface of the sheath 102 being recessed inward to reduce the difficulty of processing. The cross-sectional opening of the shunt channel 200 is gradually reduced inward from the upper or lower surface of the sheath 102; the upper and lower surfaces of the flat ribbon flexible cable 100 are covered with a top cover 103, the left and right surfaces of the flat ribbon flexible cable 100 are provided with a first half channel 104, and are covered with a side cover 105, the inner side of the side cover 105 is provided with a second half channel 106, the first half channel 104 and the second half channel 106 are bonded by a fixed adhesive to form a collecting channel 300, and the first half channel 104 is provided with a side hole 107 connected to the corresponding shunt channel 200, such as Figure 8 As shown, the diameter of the side hole 107 is smaller than the size of the movable part 301, so that only the flowing medium can pass through the side hole 107 but not the movable part 301. The width of the top cover 103 is smaller than the width of the shunt channel 200, and the cross-section of the side cover 105 is C-shaped. The two ends of the side cover 105 extend to the corresponding top cover 103 and are connected thereto, which are used to seal the shunt channel 200 and the collecting channel 300. The specific connection method can be a sealing fixing glue. Of course, the shunt channel 200 can also be a hole directly penetrating through the sheath 102, and the top cover 103 is not set at the same time.

[0043] Among them, see Figure 1 , Fig. 9In order to facilitate processing, the present invention also provides another structure of a flat ribbon flexible cable 100, which is Figure 2 The difference lies in the formation method of the collecting channel 300. Specifically, a partition net 111 and a side plate 112 are provided between the sheath 102 and the side cover 105 in sequence by fixing glue or other fixing methods. The two side plates 112 are arranged opposite to each other up and down and a convex plate 113 is formed on the opposite side. The multiple convex plates 113 are arranged at intervals along the length direction of the side plates 112 to form multiple gaps 114 on the opposite side of the two side plates 112. The size of the gap 114 is larger than the size of the convex plate 113. When the two side plates 112 are merged correspondingly up and down, the convex plate 113 on one of the side plates 112 is inserted into the gap 114 of the other side plate 112, and the collecting channel 300 is formed between the two side plates 112; the partition net 111 can connect the branch channels 200 on the upper and lower sides of the flat ribbon flexible cable 100 accordingly, and can also connect the collecting channel 300 with the branch channel 200 accordingly through the partition net 111. In this case, the obstruction body 303 is an oblique protrusion, and a plurality of oblique protrusions are arranged on both sides of the protruding plate 113 of one of the side plates 112, such as Fig.11 In the embodiment, the movable part 301 can pass quickly along the direction of b, but will be blocked in the opposite direction of b, or only one side of each convex plate 113 of the two side plates 112 is provided with an oblique protrusion, but the oblique direction needs to be changed accordingly. In addition, the mesh size of the partition net 111 is smaller than the size of the movable part 301, so that only the flowing medium can pass through the partition net 111 but not the movable part 301. The mesh of the partition net 111 can be other shapes such as round, square, elliptical or diamond, and the partition net 111 is made of elastic material, such as TPU or silicone rubber, so that it has a certain elasticity.

[0044] Preferably, the obstruction portion 302 has a bidirectional obstruction effect on the movable member 301. n+1 With Q n+1 No obstruction portion 302 is provided in the collecting channel 300 therebetween.

[0045] By n With Q n The obstruction portion 302 is provided in the collecting channel 300 between P n+1 With Q n+1 The obstruction part 302 is not provided in the collecting channel 300 between the two sides, that is, the obstruction part 302 is provided at intervals. When the flat ribbon flexible cable 100 needs to be bent, the movable part 301 moves unidirectionally in the collecting channel 300 along with the flowing medium, and the movable part 301 is obstructed by the obstruction part 302 provided at intervals, so that P n The pressure inside is always higher or lower than Q n That is, the flat ribbon flexible cable 100 can always be bent along the same preset direction or has a tendency to bend along the same preset direction.

[0046] When the obstruction part 302 has a bidirectional obstruction effect, it can be a planar ring structure; it can also be a barrier strip arranged along the radial direction of the collecting channel 300, and a plurality of barrier strips are arranged at intervals along the circumference of the collecting channel 300; it can also be an annular protrusion formed from the inner wall of the collecting channel 300 to its center, and of course other structures with a unidirectional obstruction effect can also be selected. When the movable member 301 approaches the obstruction part 302 from either side, it can be blocked, so that the flow medium behind the movable member 301 stops flowing to increase the pressure.

[0047] As a structural variation of the present invention, the obstruction portion 302 has a unidirectional obstruction effect on the movable member 301. n+1 With Q n+1 An obstruction portion 302 is disposed in the collecting channel 300 therebetween.

[0048] By n With Q n Between and P n+1 With Q n+1 The obstruction part 302 is set in the collecting channel 300 between the two sides, that is, the obstruction parts 302 with unidirectional obstruction are continuously set. When the flat ribbon flexible cable 100 needs to be bent, the movable part 301 moves unidirectionally in the collecting channel 300 along with the flowing medium. When the movable part 301 is obstructed by any obstruction part 302, P n The pressure inside is always higher or lower than Q n That is, the flat ribbon flexible cable 100 can always be bent along the same preset direction or has a tendency to bend along the same preset direction, and the movable member 301 can quickly pass through the next adjacent obstruction portion 302.

[0049] Among them, see Figure 7 When the obstruction part 302 has a unidirectional obstruction effect, it can be a conical ring structure with openings on both sides, and the direction from small to large or from large to small is the flow direction of the flowing medium, and the conical ring structure can be provided with separation grooves along its generatrix direction to separate it for the purpose of deformation; of course, a barrier strip can also be provided in the same manner, the difference being that the end of the barrier strip away from the inner wall of the collecting channel 300 is inclined toward or away from the flow direction of the flowing medium, and of course, other structures with a unidirectional obstruction effect can also be selected. When the movable part 301 approaches from one side of the obstruction part 302, it can block it, so that the flowing medium behind the movable part 301 stops flowing to increase the pressure; and when the movable part 301 approaches from the other side of the obstruction part 302, it can quickly pass through the obstruction part 302. Figure 7 In the embodiment, the movable member 301 can pass quickly along the direction a, but will be hindered along the opposite direction a.

[0050] For example, see Figure 3 , Figure 4, the flowing medium flows from bottom to top in the direction of the arrow, and the movable parts 301 on the left and right sides of the flat ribbon flexible cable 100 are both in the collecting channel 300 between P3 and Q3 and are blocked by the blocking part 302. At this time, the pressure in the collecting channel 300 corresponding to P1 to P3 is equal and gradually increases, and the pressure in P1, Q1, Q2, P2, and P3 is equal and gradually increases; the pressure in the collecting channel 300 corresponding to the direction from Q3 to Q4 is equal and remains unchanged, and the pressure in Q3, Q4, P4... is equal and remains unchanged, so the pressure in P3 is higher than the pressure in Q3, resulting in a pressure increase at P3. Figure 4 In the middle left partial view, the left side of the flat ribbon flexible cable 100 is contracted, the right side is expanded, or there is a tendency for the left side to contract and the right side to expand. Figure 4 In the middle right partial view, the left side of the flat ribbon flexible cable 100 expands and the right side contracts, or has a tendency to expand and contract, thereby reducing the driving force required for bending.

[0051] For example, see Figure 5 , Figure 6 , the flowing medium flows from bottom to top along the direction of the arrow. Figure 6 In the middle left partial view, the movable part 301 is in the collector 300 between P5 and Q5 and is blocked by the blocking part 302. At this time, the pressure in the collector 300 corresponding to P1 to P5 is equal and gradually increases, and the pressure in P1, Q1, Q2, Q3, P3, P4, and P5 is equal and gradually increases; the pressure in the collector 300 corresponding to the direction from Q5 to Q6 is equal and remains unchanged, and the pressure in Q5, Q6, etc. is equal and remains unchanged, so the pressure in P5 is higher than the pressure in Q5. Figure 6 In the middle right partial view, the movable part 301 is in the collector 300 between P4 and Q4 and is blocked by the blocking part 302. At this time, the pressure in the collector 300 corresponding to P1 to P4 is equal and gradually increases, and the pressure in Q1, Q2, P2, P3, and P4 is equal and gradually increases; the pressure in the collector 300 corresponding to the direction from Q4 to Q6 is equal and remains unchanged, and the pressure in Q4, Q5, Q6, P6... is equal and remains unchanged, so the pressure in P4 is higher than the pressure in Q4, thereby generating two continuous pressure increases at P4 and Q5. Figure 6 In the middle left partial view, the left side of the flat ribbon flexible cable 100 is contracted, the right side is expanded, or there is a tendency for the left side to contract and the right side to expand. Figure 6 In the middle right partial view, the left side of the flat ribbon flexible cable 100 expands and the right side contracts, or has a tendency to expand and contract, thereby reducing the driving force required for bending.

[0052] Preferably, the obstruction portion 302 includes a plurality of obstruction bodies 303 sequentially arranged along the collecting channel 300 , and in the flow direction of the flowing medium, the obstruction force generated by the obstruction bodies 303 on the movable member 301 gradually decreases.

[0053] By continuously arranging a plurality of obstructing bodies 303, when the movable member 301 is obstructed by the obstructing bodies 303, the time for generating high pressure in the collecting channel 300 and the branching channel 200 at the rear side of the movable member 301 can be prolonged, that is, the pressure drop speed is reduced, and a longer labor-saving time is provided for the flat ribbon flexible cable 100 when bending. When the movable member 301 passes through the first obstructing body 303, the pressure in the collecting channel 300 and the branching channel 200 at the rear side of the movable member 301 is reduced, so that the force applied by the movable member 301 to the next obstructing body 303 is reduced. Therefore, by arranging the obstruction force generated on the movable member 301 to be gradually reduced, it is convenient for the movable member 301 to pass through each obstructing body 303.

[0054] The specific shape, material and size of the obstruction body 303 can be set to change the obstruction force on the movable part 301. In the flow direction of the flowing medium, in order to gradually reduce the force applied by the movable part 301 on the obstruction body 303 so that it deforms and allows the movable part 301 to pass, the following methods can be selected; for example, the material of the obstruction body 303 is changed to gradually reduce the elastic restoring force of the obstruction body 303; for example, on the cross section of the collecting channel 300, the overlapping area between the obstruction body 303 and the movable part 301 is gradually reduced, that is, the part that has an obstruction effect on the movable part 301 is gradually reduced; for example, when the obstruction body 303 is a barrier strip, the number of barrier strips set is gradually reduced, and other suitable methods.

[0055] Preferably, the obstruction body 303 is made of elastic material. When the force applied by the movable part 301 to the obstruction body 303 is less than or equal to a preset value, the obstruction body 303 obstructs the movable part 301 . When the force applied by the movable part 301 to the obstruction body 303 is greater than the preset value, the obstruction body 303 stops obstructing the movable part 301 .

[0056] Driven by an external pumping device, the flow medium flows along the collecting channel 300 at a certain speed and pressure, and pushes the movable part 301 to move along the collecting channel 300. When the movable part 301 is blocked by the obstruction body 303, the movable part 301 exerts a force on the obstruction body 303, and the flow medium on the rear side of the obstruction body 303 and the movable part 301 gradually accumulates to increase the pressure and acts on the movable part 301, so that the force applied by the movable part 301 to the obstruction body 303 gradually increases until it is greater than the elastic restoring force of the obstruction body 303, causing it to deform, thereby releasing the movable part 301 and allowing it to pass through the obstruction body 303.

[0057] The preset value is the elastic restoring force of a single obstruction body 303 , that is, the deformation force when sufficient deformation is generated to allow the movable member 301 to pass through.

[0058] Preferably, see Figure 4 , Figure 6 , Figure 7 , Fig.11 The outer side of the obstruction body 303 is fixed to the inner wall of the collecting channel 300, and the inner side of the obstruction body 303 is inclined toward the center of the collecting channel 300 and away from the flow direction of the flowing medium.

[0059] When the movable member 301 moves along the collecting channel 300 and touches the inner side of the obstruction body 303, it is obstructed. When the other side of the flat ribbon flexible cable 100 needs to be bent, the flowing medium flows in the opposite direction and pushes the movable member 301 to move along the collecting channel 300. For the same obstruction part 302 and the obstruction body 303, the movable member 301 will pass directly without being obstructed.

[0060] The present invention provides a collecting channel 300 with an S-shaped periodic bend to connect the corresponding branch channels 200 in sequence. When the flat ribbon flexible cable 100 is bent, a pre-bending section can be formed. The movable member 301 moves along the collecting channel 300 with the flowing medium. When it moves to the P at the pre-bending section, n With Q n When the moving part 301 is blocked by the blocking part 302, it stops moving. The pressure in the collecting channel 300 increases due to the gradual accumulation of the flowing medium at the rear side of the moving part 301, so that the corresponding P n Inside and Q n A pressure difference is generated inside the flat ribbon flexible cable 100, so that the flat ribbon flexible cable 100 bends in a preset direction or has a tendency to bend in a preset direction, so as to reduce the driving force required for bending in the preset direction, avoid affecting the movement accuracy and efficiency of the equipment, avoid the phenomenon of accelerating cable structure fatigue due to repeated stress concentration, causing signal transmission performance degradation or even breakage risk, and meet the equipment's high efficiency, reliability and long life operation requirements. As the moving part 301 is blocked, the force applied by the moving part 301 to the blocking body 303 gradually increases until it is greater than the elastic restoring force of the blocking body 303, causing it to deform, so as to release the moving part 301 and allow it to pass through the blocking body 303.

[0061] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0062] The above embodiments only express several implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for those of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A flat ribbon flexible cable, characterized in that: The flat ribbon flexible cable has a bending surface, and the flat ribbon flexible cable has a plurality of branch channels formed in sequence near the bending surface; When the flat ribbon-shaped flexible cable is bent, a corresponding pre-bending section can be formed, and a pressure change occurs in the branch channel at the pre-bending section, so that the flat ribbon-shaped flexible cable bends along a preset direction or has a tendency to bend along a preset direction.

2. The flat ribbon flexible cable according to claim 1, characterized in that The flat ribbon flexible cable has the bending surfaces on both opposite sides. When the flat ribbon flexible cable is bent, a pressure difference is generated in the branch channel near one of the bending surfaces and in the branch channel near the other bending surface at the pre-bending section.

3. The flat ribbon flexible cable according to claim 2, characterized in that The flat ribbon flexible cable is also provided with a collecting channel, and the three adjacent diverting channels near one of the bending surfaces are P n , P n+1 , the three adjacent flow paths near another bending surface are Q n , Q n+1 The collecting channels are connected to P n , Q n , Q n+1 , P n+1 , n is a positive integer; At the pre-bending section, P n Inside and Q n A pressure difference is generated inside At the front side or the rear side of the pre-bending section, the pressure in the collecting channel is equal, so that the pressure in the corresponding branching channel is equal.

4. The flat ribbon flexible cable according to claim 2, characterized in that: The flat ribbon flexible cable is also provided with two collecting channels, and the four adjacent branching channels near one of the bending surfaces are P n , P n+1 , P n+2 , P n+3 , the four adjacent flow paths near another bending surface are Q n , Q n+1 , Q n+2 , Q n+3 , one of the collector channels is connected to P n , Q n , Q n+1 , Q n+2 , P n+2 , P n+3 , the other collector channel is connected to Q n , Q n+1 , P n+1 , P n+2 , P n+3 , Q n+3 , n is a positive integer; At the pre-bending section, P n Inside and Q n The pressure difference generated inside, P n+1 Inside and Q n+1 A pressure difference is generated inside At the front side or the rear side of the pre-bending section, the pressure in the collecting channel is equal, so that the pressure in the corresponding branching channel is equal.

5. The flat ribbon flexible cable according to claim 3 or 4, characterized in that: The collecting channel is provided with a flowing medium, a movable part capable of moving along the collecting channel, and an obstruction part for obstructing the movable part. n With Q n The obstruction portion is provided in the collecting channel between the two.

6. The flat ribbon flexible cable according to claim 5, characterized in that The obstruction part has a bidirectional obstruction effect on the movable member. n+1 With Q n+1 The obstruction portion is not provided in the collecting channel between the two.

7. The flat ribbon flexible cable according to claim 5, characterized in that: The obstruction portion has a one-way obstruction effect on the movable member. n+1 With Q n+1 The obstruction portion is arranged in the collecting channel between the two.

8. The flat ribbon flexible cable according to claim 5, characterized in that The obstruction portion includes a plurality of obstruction bodies sequentially arranged along the collecting channel, and in the flow direction of the flowing medium, the obstruction force generated by the obstruction bodies on the movable part gradually decreases.

9. The flat ribbon flexible cable according to claim 8, characterized in that The obstruction body is made of elastic material. When the force applied by the movable part to the obstruction body is less than or equal to a preset value, the obstruction body obstructs the movable part. When the force applied by the movable part to the obstruction body is greater than the preset value, the obstruction body stops obstructing the movable part.

10. The flat ribbon flexible cable according to claim 8, characterized in that The outer side of the obstruction body is fixed to the inner wall of the collecting channel, and the inner side of the obstruction body is inclined toward the center of the collecting channel and away from the flow direction of the flowing medium.

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