A flat ribbon flexible cable

Abstract

The present invention provides a flat ribbon flexible cable, the flat ribbon flexible cable having a bending surface, and a plurality of shunt channels are sequentially formed near the bending surface of the flat ribbon flexible cable; when the flat ribbon flexible cable is bent, a corresponding pre-bending section can be formed, and a pressure change occurs in the shunt channels at the pre-bending section, so that the flat ribbon flexible cable is bent along a preset direction or has a tendency to be bent along the preset direction, thereby reducing the driving force required for bending in the preset direction, avoiding affecting the motion accuracy and efficiency of the device, avoiding the phenomenon of accelerating the fatigue of the cable structure due to repeated stress concentration, causing deterioration of signal transmission performance and even the risk of fracture, and meeting the requirements of high-efficiency, reliable and long-life operation of the device.

Description

Technical Field

[0001] The present invention relates to a cable, and particularly to a flat ribbon flexible cable. Background Art

[0002] In wafer inspection equipment, high-precision inspection and fast motion control impose strict requirements on the flexibility and anti-deformation performance of transmission cables. The cables need to be bent at a small radius at high frequency in a narrow space. Traditional round cables are difficult to adapt to the high-frequency reciprocating bending motion scenario due to their high cross-sectional stiffness and large bending radius, while flat ribbon cables reduce the bending resistance to a certain extent with their thin design. With the improvement of the integration level of wafer inspection equipment, the cables need to carry more optical fibers or wires, resulting in a significant increase in their thickness, and at the same time causing an increase in the cross-sectional rigidity of the cables, and the driving force required for bending increases synchronously. This not only affects the motion accuracy and efficiency of the equipment, but also accelerates the structural fatigue of the cables due to repeated stress concentration, leading to deterioration of signal transmission performance and even the risk of fracture, and cannot meet the requirements of high-efficiency, reliable and long-life operation of the equipment.

[0003] The information disclosed in the background art part of the present invention is only intended to deepen the understanding of the general background art of the present invention, and should not be regarded as an admission or any form of implication that this information constitutes the prior art 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 of the synchronous increase in the driving force required for bending in the current cables.

[0005] The above object is achieved by the following technical solutions:

[0006] A flat ribbon flexible cable has a bending surface, and a plurality of flow dividing channels are sequentially formed near the bending surface of the flat ribbon flexible cable; when the flat ribbon flexible cable is bent, a corresponding pre-bending section can be formed, and a pressure change occurs in the flow dividing channels at the pre-bending section, so that the flat ribbon flexible cable bends along a preset direction or has a tendency to bend along the preset direction.

[0007] In one embodiment, both opposite sides of the flat ribbon flexible cable have the bending surface. When the flat ribbon flexible cable is bent, a pressure difference is generated between the flow dividing channels near one bending surface and the flow dividing channels near the other bending surface at the pre-bending section.

[0008] In one embodiment, a flow collecting channel is further provided on the flat ribbon flexible cable. Two adjacent flow dividing channels near one bending surface are P n 、P n+1, two adjacent flow channels near another bending surface are respectively Q n , Q n+1 , the manifold channel is sequentially connected to P n , Q n , Q n+1 , P n+1 , where n is a positive integer;

[0009] At the pre-bending section, a pressure difference is generated between P n and Q n ;

[0010] At the front side or the rear side of the pre-bending section, the pressures in the manifold channel are equal, so that the pressures in the corresponding flow channels are equal.

[0011] In one embodiment, two manifold channels are further provided on the flat ribbon flexible cable. Four adjacent flow channels near one of the bending surfaces are respectively P n , P n+1 , P n+2 , P n+3 , and four adjacent flow channels near the other bending surface are respectively Q n , Q n+1 , Q n+2 , Q n+3 , one of the manifold channels is sequentially connected to P n , Q n , Q n+1 , Q n+2 , P n+2 , P n+3 , and the other manifold channel is sequentially connected to Q n , Q n+1 , P n+1 , P n+2 , P n+3 , Q n+3 , where n is a positive integer;

[0012] At the pre-bending section, a pressure difference is generated between P n and Q n , and a pressure difference is generated between P n+1 and Q n+1 ;

[0013] At the front side or the rear side of the pre-bending section, the pressures in the manifold channel are equal, so that the pressures in the corresponding flow channels are equal.

[0014] In one embodiment, a flowing medium, a movable member capable of moving along the manifold channel, and an obstructive portion for obstructing the movable member are provided in the manifold channel. P n and Q nThe blocking portion is provided in the flow collecting channel therebetween.

[0015] In one embodiment, the blocking portion has a two-way blocking effect on the movable member, P n+1 and Q n+1 The blocking portion is not provided in the flow collecting channel therebetween.

[0016] In one embodiment, the blocking portion has a one-way blocking effect on the movable member, P n+1 and Q n+1 The blocking portion is provided in the flow collecting channel therebetween.

[0017] In one embodiment, the blocking portion includes a plurality of blocking bodies arranged in sequence along the flow collecting channel. In the flowing direction of the flowing medium, the blocking force generated by the blocking bodies on the movable member gradually decreases.

[0018] In one embodiment, the blocking body is made of an elastic material. When the force applied by the movable member to the blocking body is less than or equal to a preset value, the blocking body blocks the movable member. When the force applied by the movable member to the blocking body is greater than the preset value, the blocking body cancels blocking the movable member.

[0019] In one embodiment, the outer side of the blocking body is fixed to the inner wall of the flow collecting channel, and the inner side of the blocking body faces the center of the flow collecting channel and inclines away from the flowing direction of the flowing medium.

[0020] The beneficial effect of the present invention is that when the flat ribbon flexible cable is bent, a pressure change occurs in the flow dividing channel at the pre-bending section, and a pressure difference is generated inside both sides of the flat ribbon flexible cable, so that the flat ribbon flexible cable bends along a preset direction or has a tendency to bend along a preset direction, so as to reduce the driving force required for bending towards the preset direction, avoid affecting the movement precision and efficiency of the device, avoid the phenomenon that repeated stress concentration accelerates the cable structure fatigue, causes signal transmission performance deterioration or even fracture risk, and meets the requirements of high-efficiency, reliable and long-life operation of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is an axonometric view of a flat ribbon flexible cable provided by an embodiment of the present invention;

[0022] Figure 2 is Figure 1 a partial part exploded view of the flat ribbon flexible cable in

[0023] Figure 3 is Figure 2 a side view of a part of the flat ribbon flexible cable after removing the side cover in

[0024] Figure 4 is Figure 3 the partial enlarged view of A in

[0025] Figure 5 is Figure 3 the structural deformation diagram of the flat ribbon flexible cable in

[0026] Figure 6 is Figure 5 the partial enlarged view of B in

[0027] Figure 7 is Figure 2 the partial enlarged view of C in

[0028] Figure 8 is Figure 2 the partial enlarged view of D in

[0029] Figure 9 is Figure 2 the structural deformation diagram of the flat ribbon flexible cable in

[0030] Figure 10 is Figure 9 the side view of the part of the flat ribbon flexible cable after removing the side cover in

[0031] Figure 11 is Figure 10 the partial enlarged view of E in

[0032] Wherein:

[0033] 100, flat ribbon flexible cable; 101, conductor; 102, sheath; 103, top cover; 104, first half-flow channel; 105, side cover; 106, second half-flow channel; 107, side hole; 111, partition net; 112, side plate; 113, convex plate; 114, gap; 200, shunt channel; 300, current collection channel; 301, movable part; 302, blocking part; 303, blocking body. Specific embodiments

[0034] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be 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.

[0035] The serial numbers assigned to components in this text, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequential or technical meaning. The terms "connection" and "coupling" as used in this invention, unless otherwise specifically stated, both include direct and indirect connection (coupling). In the description of this invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing this 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 thus should not be construed as a limitation to this invention.

[0036] In this invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature can be 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, the first feature being "above", "over" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or simply means that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower horizontal height than the second feature.

[0037] An embodiment of the present invention provides a flat ribbon flexible cable. Refer to Figures 1 to 11 , the flat ribbon flexible cable 100 has a bending surface, and a plurality of flow 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 flow channels 200 at the pre-bending section, so that the flat ribbon flexible cable 100 bends along a preset direction or has a tendency to bend along a preset direction.

[0038] When the flat ribbon flexible cable 100 is bent, a pressure change occurs in the flow channels 200 at the pre-bending section, and a pressure difference is generated inside both sides of the flat ribbon flexible cable 100, so that the flat ribbon flexible cable 100 bends along a preset direction or has a tendency to bend along a preset direction, in order to reduce the driving force required when bending towards the preset direction, avoid affecting the motion accuracy and efficiency of the device, avoid the phenomenon that repeated stress concentration accelerates the fatigue of the cable structure, leading to deterioration of signal transmission performance or even the risk of fracture, and meet the requirements of efficient, reliable and long-life operation of the device.

[0039] Among them, the preset directions include two directions. For a flat ribbon flexible cable 100, the first preset direction is that the flat ribbon flexible cable 100 is bent upward, that is, its upper surface shrinks and its lower surface expands; the second preset direction is that the flat ribbon flexible cable 100 is bent downward, that is, its upper surface expands and its lower surface shrinks. In addition, the upper or lower surface of the flat ribbon flexible cable 100 is a bending surface, and the diversion channels 200 are also arranged to facilitate bending.

[0040] Among them, when the flat ribbon flexible cable 100 has only one bending surface, that is, only one side has a plurality of diversion channels 200, the pressure change in the diversion channels 200 on this side is controlled, while the other side of the flat ribbon flexible cable 100 is at normal pressure, so a pressure difference is generated between its two sides. Specifically, as long as the pressure in the diversion channels 200 increases or decreases to generate a pressure change, the purpose of bending the cable with less effort can be achieved. When the pressure in the diversion channels 200 increases, the side of the flat ribbon flexible cable 100 expands and the opposite side shrinks; when the pressure in the diversion channels 200 decreases, the side of the flat ribbon flexible cable 100 shrinks and the opposite side expands. As for how to make the pressure in the diversion channels 200 change, the flowing medium therein can be continuously introduced to pressurize it, or the flowing medium therein can be continuously extracted to decompress it, or the flowing medium therein can be heated to pressurize it, or the flowing medium therein can be cooled to decompress it, and other methods that can realize the pressure change of the flowing medium in the diversion channels 200.

[0041] 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 between the diversion channels 200 near one bending surface and the diversion channels 200 near the other bending surface at the pre-bending section.

[0042] Compared with arranging the diversion channels 200 on one side of the flat ribbon flexible cable 100, arranging the diversion channels 200 on both sides and making a pressure difference generated between the corresponding diversion channels 200 at the pre-bending section is more convenient for bending the flat ribbon flexible cable 100.

[0043] Among them, the upper and lower surfaces of the flat ribbon flexible cable 100 are both covered with a top cover 103. At the same time, the upper and lower surfaces of the flat ribbon flexible cable 100 are both bending surfaces, so as to facilitate the two-way bending of the flat ribbon flexible cable 100 and expand the bending application range.

[0044] Among them, when the flat ribbon flexible cable 100 is bent, a pressure difference is correspondingly generated in the flow dividers 200 on both sides. Specifically, the first positive pressure is in one flow divider 200, the second positive pressure, normal pressure or negative pressure is in the other flow divider 200, where the first positive pressure is greater than the second positive pressure; or the normal pressure is in one flow divider 200, and the negative pressure is in the other flow divider 200; or the first negative pressure is in one flow divider 200, and the second negative pressure is in the other flow divider 200, where the absolute value of the first negative pressure is less than the absolute value of the second negative pressure.

[0045] Preferably, referring to Figure 3 、 Figure 4 , a current collector channel 300 is further provided on the flat ribbon flexible cable 100. Two adjacent flow dividers 200 near one bending surface are respectively P n 、P n+1 , and two adjacent flow dividers 200 near the other bending surface are respectively Q n 、Q n+1 . The current collector channel 300 sequentially connects P n 、Q n 、Q n+1 、P n+1 , where n is a positive integer;

[0046] At the pre-bending section, a pressure difference is generated between P n and Q n .

[0047] At the front side or the rear side of the pre-bending section, the pressure in the current collector channel 300 is equal, so that the pressure in the corresponding flow divider 200 is equal.

[0048] By arranging the current collector channel 300 to be bent in an S-shaped periodic manner to sequentially connect the corresponding flow dividers 200, a pressure difference is generated between P n and Q n at the pre-bending section, a pressure difference is generated inside both sides of the flat ribbon flexible cable 100, so that the flat ribbon flexible cable 100 bends along the preset direction or has a tendency to bend along the preset direction, and the driving force required for bending towards the preset direction is reduced.

[0049] Among them, Figure 3 is the side view of Figure 2 after removing the side cover 105. The left side is the side view from right to left, the right side is the side view from left to right, the lower surface of the flat ribbon flexible cable 100 is in the middle of the two side views, and the upper surfaces of the flat ribbon flexible cable 100 are on both the left and right sides. The current collector channels 300 are all bent in an S-shaped manner to respectively connect the corresponding flow dividers 200. Specifically, as in Figure 4 , the current collector channel 300 sequentially connects P1, Q1, Q2, P2, P3, Q3, Q4, P4...

[0050] For example, if the pre-bent section of the flat ribbon cable 100 is the section from P3 to Q3 at this time, a pressure difference is generated between 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 current collectors 300 are equal. On the front side of P3-Q3, that is, the pressures in Q3, Q4, P4... are equal, and the pressures in the corresponding current collectors 300 are equal.

[0051] As a structural deformation of the present invention, refer to Figure 5 、 Figure 6 , two current collectors 300 are further provided on the flat ribbon cable 100. Four adjacent flow dividers 200 near one bending surface are respectively P n 、P n+1 、P n+2 、P n+3 , and four adjacent flow dividers 200 near the other bending surface are respectively Q n 、Q n+1 、Q n+2 、Q n+3 . One current collector 300 sequentially connects P n 、Q n 、Q n+1 、Q n+2 、P n+2 、P n+3 , and the other current collector 300 sequentially connects Q n 、Q n+1 、P n+1 、P n+2 、P n+3 、Q n+3 , where n is a positive integer;

[0052] At the pre-bent section, a pressure difference is generated between P n and Q n , and a pressure difference is generated between P n+1 and Q n+1 ;

[0053] On the front or rear side of the pre-bent section, the pressures in the current collectors 300 are equal, so that the pressures in the corresponding flow dividers 200 are equal.

[0054] By providing another form of current collector 300 that is periodically bent in an S shape to sequentially connect the corresponding flow dividers 200, a pressure difference is generated between P n and Q n and between P n+1 and Q n+1 at the pre-bent section, so as to generate two continuous pressure differences inside both sides of the flat ribbon cable 100, thereby further reducing the driving force required for bending in a preset direction.

[0055] Among them, Figure 5 is Figure 2 a side view after removing the side cover 105 from Figure 5 . 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 cable 100, and the upper surfaces of the flat ribbon cable 100 are on both the left and right sides. The manifolds 300 are all bent in an S shape to connect the corresponding shunt channels 200 respectively. Specifically, as Figure 6 shown in Figure 6 , the manifolds 300 are sequentially connected to P1, Q1, Q2, Q3, P3, P4, P5, Q5, Q6...

[0056] For example, at this time, the pre-bent sections of the flat ribbon cable 100 are the P4-Q4 and P5-Q5 sections. Then, a pressure difference is generated between P4 and Q4, and a pressure difference is generated between P5 and Q5, that is, two consecutive pressure differences are generated. Moreover, at the rear side of P4-Q4, that is, the pressures in P1, Q1, Q2, Q3, P3, P4, P5 are equal, and the pressures in the corresponding manifolds 300 are equal. And at the front side of P5-Q5, that is, the pressures in Q5, Q6... are equal, and the pressures in the corresponding manifolds 300 are equal.

[0057] Preferably, a flowing medium, a movable member 301 capable of moving along the manifold 300, and an obstruction portion 302 for obstructing the movable member 301 are provided in the manifold 300. An obstruction portion 302 is provided in the manifold 300 between P n and Q n .

[0058] When the movable member 301 moves into the manifold 300 between P n and Q n , it is obstructed by the obstruction portion 302 and stops moving. The pressure in the manifold 300 behind the movable member 301 increases, causing a pressure difference to be generated between P n and Q n , so that the flat ribbon cable 100 is bent along a preset direction or has a tendency to be bent along a preset direction, thereby reducing the driving force required when bending towards the preset direction.

[0059] Among them, in the wafer inspection equipment, the positions where the flat ribbon cable 100 is bent are sequential and continuous. Therefore, the movement of the movable member 301 in the flow channel 300 is also sequential and continuous. The pre-bending section is the section of the flat ribbon cable 100 that needs to be bent at a certain moment. In addition, by controlling parameters such as the flow rate and pressure of the flowing medium in the flow channel 300, the movement speed and position of the movable member 301 can be controlled, so that the positions of the movable members 301 in the two flow channels 300 are basically the same, thus adapting to the generation of a pre-bending section at the required position of the flat ribbon cable 100. That is to say, when the movable member 301 moves to a certain place, this section is the pre-bending section.

[0060] Among them, the blocking part 302 is made of an elastic material such as rubber or silica gel, so that it can block the movable member 301 and can also deform under the action of the pressure of the flowing medium to allow the movable member 301 to pass through. In addition, by setting the control circuit and parameters such as the specific size and material of the blocking part 302, the timing of bending the flat ribbon cable 100 can be made to coincide with the timing when the movable member 301 is blocked. Specifically, during the period from when the movable member 301 is blocked to when it passes through, and the period from when the flat ribbon cable 100 is bent to when it is flattened, the two coincide. Preferably, the movable member 301 starts to be blocked before the flat ribbon cable 100 starts to be bent, so as to achieve the purpose of bending the flat ribbon cable 100 with less effort.

[0061] Among them, the flowing medium can be water, ethylene glycol aqueous solution, mineral oil, synthetic oil or silicone oil, etc., to cool the flat ribbon cable 100 and ensure its signal transmission performance. The movable member 301 can be a sphere or a cylinder that fits the cross-section of the flow channel 300, so as to facilitate the movement of the movable member 301 along the flow channel 300 and be able to divide the flow channel 300 into two sections with different pressures.

[0062] Among them, see Figure 1 、 Figure 2 , the flat ribbon cable 100 includes internal wires 101 and a sheath 102 made by a thermoplastic process on the outside of the wires 101. The sheath 102 is integrally flat ribbon-shaped. The flow dividing channel 200 is formed by inward depression from the upper or lower surface of the sheath 102 to reduce the processing difficulty. The cross-sectional opening of the flow dividing channel 200 gradually narrows inward from the upper or lower surface of the sheath 102; the upper and lower surfaces of the flat ribbon cable 100 are both covered with a top cover 103. The left and right surfaces of the flat ribbon cable 100 are both provided with first half-flow channels 104 and covered with side covers 105. The inner side of the side cover 105 is provided with second half-flow channels 106. The first half-flow channels 104 and the second half-flow channels 106 are bonded by fixing glue to form the flow channel 300. Side holes 107 communicating with the corresponding flow dividing channels 200 are opened on the first half-flow channels 104, as Figure 8As shown, the diameter of the side hole 107 is smaller than the size of the movable member 301, so that only the flowing medium can pass through the side hole 107 and the movable member 301 cannot pass through. The width of the top cover 103 is smaller than the width of the flow dividing channel 200, and the cross section of the side cover 105 is C-shaped. The two ends of the side cover 105 extend towards the corresponding top cover 103 and are connected thereto for sealing the flow dividing channel 200 and the flow collecting channel 300. The specific connection method can be a sealing fixing glue. Of course, the flow dividing channel 200 can also be a hole directly penetrated and opened on the sheath 102, and at the same time, the top cover 103 is cancelled.

[0063] Among them, referring to Figure 1 , Figure 9 , for the convenience of processing, the present invention also provides a flat ribbon flexible cable 100 with another structure, and the difference from Figure 2 lies in the formation method of the flow collecting channel 300. Specifically, a partition net 111 and side plates 112 are sequentially arranged between the sheath 102 and the side cover 105 by fixing glue or other fixing methods. The two side plates 112 are arranged opposite to each other up and down, and convex plates 113 are formed on the opposite sides. A plurality of convex plates 113 are arranged at intervals along the length direction of the side plates 112 to form a plurality of gaps 114 on the opposite sides of the two side plates 112. The size of the gaps 114 is larger than the size of the convex plates 113. When the two side plates 112 are combined corresponding to each other up and down, the convex plates 113 on one side plate 112 are inserted into the gaps 114 of the other side plate 112, and a flow collecting channel 300 is formed between the two side plates 112; the partition net 111 can correspondingly connect the flow dividing channels 200 on the upper and lower sides of the flat ribbon flexible cable 100, and can also correspondingly connect the flow collecting channel 300 and the flow dividing channel 200 through the partition net 111. At this time, the blocking body 303 is an oblique protrusion, and a plurality of oblique protrusions are arranged on both sides of the convex plate 113 of one side plate 112. As in Figure 11 , the movable member 301 can quickly pass along the direction of b, and will be blocked along 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 inclination direction needs to be correspondingly changed. In addition, the mesh size of the partition net 111 is smaller than the size of the movable member 301, so that only the flowing medium can pass through the partition net 111 and the movable member 301 cannot pass through. The mesh holes of the partition net 111 can be other shapes such as circular, square, oval or diamond, and the partition net 111 is made of an elastic material such as TPU or silicone rubber to make it have a certain elasticity.

[0064] Preferably, the blocking portion 302 has a two-way blocking effect on the movable member 301, and the blocking portion 302 is not provided in the flow collecting channel 300 between P n+1 and Q n+1 .

[0065] By arranging between P n and Q nA blocking part 302 is arranged in the flow channel 300 between them, and at P n+1 and Q n+1 No blocking part 302 is arranged in the flow channel 300 between them, that is, the blocking parts 302 are arranged at intervals. When the flat ribbon flexible cable 100 needs to be bent, the moving part 301 moves unidirectionally in the flow channel 300 along with the flowing medium. The moving part 301 is blocked by the blocking parts 302 arranged at intervals, so that the pressure in P n is always higher or lower than that in Q n , that is, the flat ribbon flexible cable 100 can always be bent along the same preset direction or has a tendency to be bent along the same preset direction.

[0066] Wherein, when the blocking part 302 has a two-way blocking effect, it can be a planar ring structure; it can also be a blocking strip arranged radially along the flow channel 300, and a plurality of blocking strips are arranged at intervals along the circumferential direction of the flow channel 300; it can also be an annular protrusion formed from the inner wall of the flow channel 300 towards its center. Of course, other structures with a one-way blocking effect can also be selected. When the moving part 301 approaches from either side of the blocking part 302, it can be blocked, so that the flowing medium behind the moving part 301 stops flowing to increase the pressure.

[0067] As a structural deformation of the present invention, the blocking part 302 has a one-way blocking effect on the moving part 301, and P n+1 and Q n+1 A blocking part 302 is arranged in the flow channel 300 between them.

[0068] By arranging the blocking part 302 in the flow channel 300 between P n and Q n and between P n+1 and Q n+1 That is, the blocking parts 302 with a one-way blocking effect are arranged continuously. When the flat ribbon flexible cable 100 needs to be bent, the moving part 301 moves unidirectionally in the flow channel 300 along with the flowing medium. When the moving part 301 is blocked by any one of the blocking parts 302, the pressure in P n is always higher or lower than that in Q n , that is, the flat ribbon flexible cable 100 can always be bent along the same preset direction or has a tendency to be bent along the same preset direction. At the same time, the moving part 301 can quickly pass through the next adjacent blocking part 302.

[0069] Wherein, referring to Figure 7, when the blocking part 302 has a one-way blocking effect, it can be a conical ring structure with openings on both sides. 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 a partition groove along its generatrix direction to separate it for easy deformation. Of course, a blocking strip can also be set in the same way. The difference is that one end of the blocking strip away from the inner wall of the flow channel 300 inclines towards or away from the flow direction of the flowing medium. Of course, other structures with a one-way blocking effect can also be selected. When the movable part 301 approaches from one side of the blocking part 302, it can block the movable part 301, 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 blocking part 302, it can quickly pass through the blocking part 302. As Figure 7 In, the movable part 301 can quickly pass through along the direction of a and will be blocked along the opposite direction of a.

[0070] For example, referring to Figure 3 、 Figure 4 , the flowing medium flows from bottom to top along the arrow direction. The movable parts 301 on both the left and right sides of the flat ribbon flexible cable 100 are both in the flow channel 300 between P 3 and Q 3 and are blocked by the blocking part 302. At this time, the pressure in the flow channel 300 corresponding to P 1 to P 3 is equal and gradually increases. The pressure in the flow channel 300 corresponding to P 1 、Q 1 、Q 2 、P 2 、P 3 is equal and gradually increases; the pressure in the flow channel 300 corresponding to the direction from Q 3 to Q 4 is equal and remains unchanged. The pressure in the flow channel 300 corresponding to Q 3 、Q 4 、P 4 ……is equal and remains unchanged. Therefore, the pressure in P 3 is higher than the pressure in Q 3 , generating a pressure increase at P 3 . For Figure 4 in the left partial view, the left side of the flat ribbon flexible cable 100 shrinks, the right side expands or has a tendency to shrink on the left side and expand on the right side. For Figure 4 in the right partial view, the left side of the flat ribbon flexible cable 100 expands, the right side shrinks or has a tendency to expand on the left side and shrink on the right side, thereby reducing the driving force required during bending.

[0071] For example, referring to Figure 5 、 Figure 6 , the flowing medium flows from bottom to top along the arrow direction. For Figure 6 in the left partial view, the movable part 301 is at P5 within the flow channel 300 between and blocked by the blocking portion 302, at this time, P 5 to P 1 corresponding pressure within the flow channel 300 is equal and gradually increases, P 5 1 1 、Q 2 、Q 3 、Q 3 、P 4 、P 4 、P 5 pressure within is equal and gradually increases; from Q 5 to Q 6 direction corresponding pressure within the flow channel 300 is equal and remains unchanged, Q 5 、Q 6 …… pressure within is equal and remains unchanged, therefore pressure within P 5 is higher than pressure within Q 5 For the right partial view in Figure 6 the movable member 301 is within the flow channel 300 between P 4 and Q 4 and blocked by the blocking portion 302, at this time, P 1 to P 4 corresponding pressure within the flow channel 300 is equal and gradually increases, Q 1 、Q 2 、P 2 、P 3 、P 4 pressure within is equal and gradually increases; from Q 4 to Q 6 direction corresponding pressure within the flow channel 300 is equal and remains unchanged, Q 4 、Q 5 、Q 6 、P 6 …… pressure within is equal and remains unchanged, therefore pressure within P 4 is higher than pressure within Q 4 resulting in two consecutive pressure increase locations at P 4 、Q 5 For the left partial view in Figure 6 the left side of the flat ribbon cable 100 contracts, the right side expands or has a tendency to contract on the left side and expand on the right side. For Figure 6 the right partial view in

[0072] the left side of the flat ribbon cable 100 expands, the right side contracts or has a tendency to expand on the left side and contract on the right side, thereby reducing the driving force required during bending.Preferably, the blocking part 302 includes a plurality of blocking bodies 303 arranged in sequence along the flow channel 300. In the flow direction of the flowing medium, the blocking force exerted by the blocking body 303 on the movable part 301 gradually decreases.

[0073] By continuously arranging a plurality of blocking bodies 303, when the movable part 301 is blocked by the blocking body 303, the time for generating high pressure in the flow channel 300 and the diversion channel 200 at the rear side of the movable part 301 can be extended, that is, the pressure drop speed can be reduced, providing a longer labor-saving time for bending the flat ribbon flexible cable 100. When the movable part 301 passes through the first blocking body 303, the pressure in the flow channel 300 and the diversion channel 200 at the rear side of the movable part 301 decreases, so that the acting force exerted by the movable part 301 on the next blocking body 303 decreases. Therefore, by setting the blocking force exerted on the movable part 301 to gradually decrease, it is convenient for the movable part 301 to pass through each blocking body 303.

[0074] Among them, the specific shape, material and size of the blocking body 303 can be set to change the blocking force on the movable part 301. In the flow direction of the flowing medium, in order for the force exerted by the movable part 301 on the blocking body 303 to gradually decrease so that it deforms and the movable part 301 can pass through, the following methods can be selected; for example, changing the material of the blocking body 303 to gradually reduce the elastic restoring force of the blocking body 303; another example is to set the overlapping area between the blocking body 303 and the movable part 301 to gradually decrease on the cross-section of the flow channel 300, that is, the part that blocks the movable part 301 gradually decreases; another example is when the blocking body 303 is a barrier strip, gradually reducing the number of barrier strips set, and other suitable methods.

[0075] Preferably, the blocking body 303 is made of an elastic material. When the force exerted by the movable part 301 on the blocking body 303 is less than or equal to a preset value, the blocking body 303 blocks the movable part 301. When the force exerted by the movable part 301 on the blocking body 303 is greater than the preset value, the blocking body 303 cancels the blocking of the movable part 301.

[0076] The flowing medium flows along the flow channel 300 at a certain speed and pressure under the drive of an external pumping device, and pushes the movable part 301 to move along the flow channel 300. When the movable part 301 is blocked by the blocking body 303, the movable part 301 exerts a force on the blocking body 303. The blocking body 303 and the flowing medium at the rear side of the movable part 301 gradually accumulate and the pressure increases, and acts on the movable part 301, so that the force exerted by the movable part 301 on the blocking body 303 gradually increases until it is greater than the elastic restoring force of the blocking body 303 and causes it to deform, so as to release the movable part 301 and allow it to pass through the blocking body 303.

[0077] Wherein, the preset value is the elastic restoring force of a single obstacle 303, that is, the deformation force that generates sufficient deformation to allow the moving part 301 to pass through.

[0078] Preferably, referring to Figure 4 、 Figure 6 、 Figure 7 、 Figure 11 ,the outer side of the obstacle 303 is fixed to the inner wall of the manifold 300, and the inner side of the obstacle 303 faces the center of the manifold 300 and is inclined away from the flow direction of the flowing medium.

[0079] When the moving part 301 moves along the manifold 300 and touches the inner side of the obstacle 303, it is blocked. When it is necessary to bend the other side of the flat ribbon cable 100, the flowing medium is made to flow in the reverse direction, pushing the moving part 301 to move along the manifold 300 in the reverse direction. For the same blocking part 302 and obstacle 303, the moving part 301 will directly pass through without being blocked.

[0080] In the present invention, by providing a manifold 300 that is periodically bent in an S shape to sequentially connect the corresponding flow dividing channels 200, a pre-bending section can be formed when the flat ribbon cable 100 is bent. The moving part 301 moves along the manifold 300 with the flowing medium. When it moves between P n and Q n at the pre-bending section, the moving part 301 is blocked by the blocking part 302 and stops moving. The pressure in the manifold 300 increases due to the gradual accumulation of the flowing medium behind the moving part 301, resulting in a pressure difference between the inside of the corresponding P n and the inside of Q n so that the flat ribbon cable 100 bends or has a tendency to bend in the preset direction, reducing the driving force required for bending in the preset direction, avoiding affecting the movement accuracy and efficiency of the equipment, and avoiding the phenomenon of accelerated cable structure fatigue caused by repeated stress concentration, leading to deterioration of signal transmission performance or even the risk of fracture, meeting the requirements of efficient, reliable, and long-life operation of the equipment. As the blocking of the moving part 301 progresses, the force exerted on the obstacle 303 by the moving part 301 gradually increases until it is greater than the elastic restoring force of the obstacle 303, causing it to deform to release the moving part 301 and allow it to pass through the obstacle 303.

[0081] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, 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, it should be considered as the scope described in this specification.

[0082] The above embodiments merely represent several implementation manners of the present invention. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the appended claims.

Claims

1. A flat ribbon flexible cable, characterized in that: The flat ribbon flexible cable comprises an internal conductor and a sheath outside the conductor, the flat ribbon flexible cable has a bending surface, and a plurality of shunt channels are sequentially formed near the bending surface of the flat ribbon flexible cable, and the shunt channels are formed by the upper or lower surface of the sheath being recessed inward; the flat ribbon flexible cable is also provided with a collecting channel, and the corresponding shunt channels are sequentially connected by setting the collecting channel that is periodically bent in an S shape; the collecting channel is provided with a flowing medium, a movable part that can move along the collecting channel, and an obstruction part for obstructing the movable part, and the flat ribbon flexible cable can form a corresponding pre-bending section when being bent, and a pressure change is generated 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; 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.

2. The flat ribbon flexible cable according to claim 1, characterized in that The flat ribbon flexible cable is also provided with a collecting channel, and two adjacent diverting channels near one of the bending surfaces are respectively P n , P n+1 , the two adjacent flow paths near the other 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.

3. The flat ribbon flexible cable according to claim 1, 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 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.

4. The flat ribbon flexible cable according to claim 2 or 3, characterized in that: P n With Q n The obstruction portion is provided in the collecting channel between the two.

5. The flat ribbon flexible cable according to claim 4, 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.

6. The flat ribbon flexible cable according to claim 4, 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.

7. The flat ribbon flexible cable according to claim 4, 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.

8. The flat ribbon flexible cable according to claim 7, 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.

9. The flat ribbon flexible cable according to claim 7, 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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