Surrounding type wiring device and rotating mechanism

Abstract

The invention relates to the field of cable installation, in particular to a surrounding type wiring device and a rotating mechanism, and the surrounding type wiring device comprises a rotating part, a base and a cable. The rotating component is rotatably connected to the base, and the maximum rotating angle of the rotating component is a set angle. The base comprises a circular truncated cone part, and the rotating part is located on one side of the top end of the circular truncated cone part. The diameter of the top end of the circular truncated cone part is smaller than that of the bottom end of the circular truncated cone part. One end of the cable is connected to the rotating part, and the other end surrounds the side surface of the circular truncated cone part and is connected to the bottom end of the circular truncated cone part. The device is simple in structure and easy to realize, and reduces or eliminates the interference on the detection of an optical system.

Description

Technical Field

[0001] The invention belongs to the field of cable installation, and in particular relates to a surrounding wiring device and a rotating mechanism. Background Art

[0002] In various types of aerospace optical equipment, in order to meet the needs of larger-scale detection, it is often necessary to design one or more rotating mechanisms to achieve pointing in different directions. For multi-stage rotating mechanisms, such as periscope pointing structures, the electrical components such as the drive motor and sensor at the end need to transmit electrical signals to the base at the far end, and the electrical components themselves will rotate over a large range with the rotation of the rotating mechanism. Therefore, the cable itself is required to have a certain range of motion, while leaving a certain redundancy to meet the angle requirements.

[0003] There are three main existing wiring schemes: ① Single-line layout, which leads the power cord directly from the power source and then arranges it along the mechanism to the position of the corresponding component. This will cause a messy layout of the cables, which may interfere with the detection of the optical system. ② Telescopic layout, which requires the use of a telescopic power cord so that the power cord can be freely extended and retracted according to the movement of the structure at the end. When the cable is stretched, it is necessary to overcome the elastic potential energy to do work, which inevitably introduces additional torque and affects the rotation of the shaft system. ③ Rotating wiring device based on FFC (Flexible Flat Cable, flexible flat cable) / FPC (Flexible Printed Circuit, flexible printed circuit board), with the help of the flexibility of FFC / FPC flexible circuit, by designing a unique annular baffle outside the rotating mechanism, the flexible circuit is bent and displaced between the inner wall and the outer wall of the annular baffle, thereby realizing the extension and retraction of the cable. Due to the bending radius limit of the flexible circuit, the designed annular baffle is often too large, which is not conducive to the lightweight and miniaturization of the structure. Summary of the invention

[0004] In view of this, the present invention aims to provide a wraparound wiring device and a rotating mechanism, which have a simple structure and are easy to implement, while reducing or eliminating interference with the detection of the optical system. To achieve the above object, the technical solution created by the present invention is implemented as follows: A wraparound wiring device, comprising: Rotating parts; A base, the rotating component is rotatably connected to the base, and the maximum rotation angle of the rotating component is a set angle; the base includes a truncated cone portion, the rotating component is located on one side of the top end of the truncated cone portion; the diameter of the top end of the truncated cone portion is smaller than the diameter of the bottom end of the truncated cone portion; and A cable, one end of which is connected to the rotating component, and the other end of which is wrapped around the side surface of the truncated cone portion and connected to the bottom end of the truncated cone portion.

[0005] Furthermore, the rotating component includes a main body and a connecting block. The connecting block is rotatably arranged on the main body with the radial direction of the main body as an axis. One end of the cable is connected to the connecting block.

[0006] Furthermore, the base includes an upper end portion connected to the top of the truncated cone portion, the upper end portion is provided with a groove portion and a window connected to the groove portion, the groove portion is recessed downward from the surface of the upper end portion on the side away from the truncated cone portion and extends along the circumference of the upper end portion; one end of the cable passes through the window and is arranged along the groove portion and connected to the rotating component.

[0007] Furthermore, a side edge of the window close to the center of the upper end portion is in contact with an edge of the top end of the truncated cone portion.

[0008] Furthermore, the base includes a lower end portion connected to the bottom end of the truncated cone portion, the lower end portion includes an upper surface, a side surface, and an arc surface connected between the upper surface and the side surface, the arc surface is provided with a plurality of mounting through holes, and the plurality of mounting through holes are evenly spaced and arranged along the circumference of the lower end portion.

[0009] Furthermore, the base also includes a rib plate structure arranged on the side of the truncated cone portion, the rib plate structure is provided with a limiting groove, the limiting groove is recessed inward from one side of the rib plate structure close to the side of the truncated cone portion and extends along the inclined direction of the side of the truncated cone portion; the other end of the cable is wrapped around the side of the truncated cone portion and is limited between the limiting groove and the side of the truncated cone portion.

[0010] Furthermore, there are multiple rib plate structures, and the multiple rib plate structures are evenly spaced and arranged along the circumference of the truncated cone portion.

[0011] Further, the depth of the limiting groove is greater than the diameter of the cable; and / or The length of the limiting groove is smaller than the length of the generatrix of the truncated cone portion.

[0012] Furthermore, the calculation formula for setting the angle is:

[0013] in, is the number of turns of the cable around the truncated cone, is the vertical height of the truncated cone, is the radius of the cable, is the angle between the generatrix of the truncated cone and the center line, is the radius of the bottom end of the truncated cone.

[0014] A rotating mechanism comprises the surrounding wiring device as described above.

[0015] Compared with the prior art, the invention can achieve the following beneficial effects: The wraparound wiring device of the embodiment of the present invention includes a rotating part, a base and a cable. One end of the cable is connected to the rotating part, and the other end wraps around the side of the truncated cone and is connected to the bottom of the truncated cone. In this way, the extension length of the cable from the top of the truncated cone can be adjusted by means of the change in the diameter of the cross section of the truncated cone in the direction from the bottom of the truncated cone to the top of the truncated cone when the rotating part rotates relative to the base. Its structure is simple and easy to implement, and the other end of the cable wraps around the side of the truncated cone, so that the structure of the wraparound wiring device is more compact, and the orderly layout of the cables is achieved, reducing or eliminating the interference with the detection of the optical system. At the same time, since a telescopic cable is not used, no additional torque will be applied to the rotating end of the rotating end of the rotating mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings: Figure 1 A three-dimensional exploded view of a wraparound wiring device according to an embodiment of the present invention; Figure 2 A schematic diagram of the surrounding wiring device according to an embodiment of the present invention when the cable is in a retracted state; Figure 3 A schematic diagram of the surround wiring device described in an embodiment of the present invention when the cable is in an extended state.

[0017] Description of reference numerals: 10. Surrounding wiring device; 11. Rotating component; 12. Base; 13. Cable; 14. Cone portion; 15. Main body; 16. Connecting block; 17. Upper end portion; 18. Groove portion; 19. Window; 20. Lower end portion; 21. Upper surface; 22. Side surface; 23. Arc surface; 24. Mounting through hole; 25. Rib plate structure; 26. Limiting groove. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical scheme and advantages of the invention clearer, the invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the invention and do not constitute a limitation to the invention. Similar components in different embodiments use associated similar component numbers. In the following embodiments, many detailed descriptions are to enable the invention to be better understood. However, those skilled in the art can easily recognize that some of the features can be omitted in different situations, or can be replaced by other components, materials, and methods. In some cases, some operations related to the invention are not shown or described in the specification, in order to avoid the core part of the invention being overwhelmed by too much description, and for those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations according to the description in the specification and the general technical knowledge in the art.

[0019] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other to form various implementation methods. At the same time, the steps or actions in the method description can also be interchanged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the various sequences in the specification and the drawings are only for the purpose of clearly describing a certain embodiment and are not meant to be a necessary sequence, unless otherwise specified that a certain sequence must be followed.

[0020] In the description of the invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "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 drawings, and are only for the convenience of describing the 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 on the invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the invention, unless otherwise specified, the meaning of "multiple" is two or more.

[0021] In the description of the invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the invention can be understood according to specific circumstances.

[0022] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0023] See also Figure 1 , Figure 2 and Figure 3 As shown, an embodiment of the present invention provides a wraparound wiring device 10 , which includes a rotating component 11 , a base 12 and a cable 13 .

[0024] The rotating component 11 is rotatably connected to the base 12, and the maximum rotation angle of the rotating component 11 is a set angle. The base 12 includes a truncated cone portion 14, and the rotating component 11 is located on one side of the top of the truncated cone portion 14. The diameter of the top of the truncated cone portion 14 is smaller than the diameter of the bottom of the truncated cone portion 14. In the direction from the bottom of the truncated cone portion 14 to the top of the truncated cone portion 14, the diameter of the cross section of the truncated cone portion 14 gradually decreases, so that the side of the truncated cone portion 14 is an inclined surface.

[0025] One end of the cable 13 is connected to the rotating member 11 , and the other end of the cable 13 is wrapped around the side surface of the truncated cone portion 14 and connected to the bottom end of the truncated cone portion 14 .

[0026] The wraparound wiring device 10 of the embodiment of the invention comprises a rotating part 11, a base 12 and a cable 13. One end of the cable 13 is connected to the rotating part 11, and the other end is wrapped around the side of the truncated cone 14 and connected to the bottom of the truncated cone 14. In this way, the extension length of the cable 13 from the top of the truncated cone 14 can be adjusted by means of the change of the diameter of the cross section of the truncated cone 14 in the direction from the bottom of the truncated cone 14 to the top of the truncated cone 14 when the rotating part 11 rotates relative to the base 12. Its structure is simple and easy to implement, and the other end of the cable 13 is wrapped around the side of the truncated cone 14, so that the structure of the wraparound wiring device 10 is more compact, and the orderly layout of the cable 13 is realized, reducing or eliminating the interference with the detection of the optical system. At the same time, since the telescopic cable 13 is not used, no additional torque is applied to the rotating end of the rotating end of the rotating mechanism.

[0027] In one embodiment, the rotating component 11 includes a main body 15 and a connecting block 16, wherein the main body 15 is rotatably connected to the base 12, wherein the main body 15 may be in a circular ring shape. The connecting block 16 is rotatably arranged on the main body 15 with the radial direction of the main body 15 as an axis. The connecting block 16 may be arranged on the side of the main body 15. The shape of the connecting block 16 may be cylindrical. One end of the cable 13 is connected to the connecting block 16. One end of the cable 13 may be connected to the connecting block 16 by bonding.

[0028] In one embodiment, the base 12 includes an upper end 17 connected to the top of the truncated cone 14, and the upper end 17 is provided with a groove 18 and a window 19 connected to the groove 18, wherein the window 19 passes through the upper end 17 of the base 12, and one end of the cable 13 can pass through the window 19 and enter the groove 18. The window 19 can be circular, square, oval, etc., and the invention is not limited thereto. The groove 18 is recessed downward from the surface of the upper end 17 away from the truncated cone 14 and extends along the circumference of the upper end 17. After passing through the window 19, one end of the cable 13 is arranged along the groove 18 and connected to the rotating component 11. In this way, when the rotating component 11 rotates relative to the base 12, the cable 13 can move in the groove 18 with the rotation of the rotating component 11, so as to adjust the extension length of the cable 13 from the window 19.

[0029] In one embodiment, the window 19 is close to the edge of one side of the center of the upper end 17 and is close to the edge of the top of the truncated cone 14. In this way, the cable 13 extending from the top of the truncated cone 14 can directly pass through the window 19 and enter the groove 18.

[0030] In one embodiment, the base 12 includes a lower end 20 connected to the bottom end of the truncated cone portion 14, and the lower end 20 includes an upper surface 21, a side surface 22, and an arc surface 23 connected between the upper surface 21 and the side surface 22. The arc surface 23 is provided with a plurality of mounting through holes 24, and the arc surface 23 is provided with a plurality of mounting through holes 24, and the plurality of mounting through holes 24 are evenly spaced and arranged along the circumference of the lower end 20. In this way, the lower end 20 of the base 12 can be fixed to an external structure by passing a mounting member (such as a bolt) through the mounting through hole 24, thereby fixing the base 12 to the external structure, wherein the external structure can be a fixed end of a rotating mechanism.

[0031] In one embodiment, the base 12 further includes a rib plate structure 25 disposed on the side of the truncated cone 14, the top of the rib plate structure 25 can be connected to the surface of the upper end 17 close to the truncated cone 14, and the bottom of the rib plate structure 25 can be connected to the upper surface 21 of the lower end 20. The rib plate structure 25 is provided with a limiting groove 26, which is recessed inward from the side of the rib plate structure 25 close to the truncated cone 14 and extends along the inclined direction of the side of the truncated cone 14. In one embodiment, the depth of the limiting groove 26 is greater than the diameter of the cable 13. This is conducive to the movement of the cable 13 in the limiting groove 26 along the inclined direction of the side of the truncated cone 14. In one embodiment, the length of the limiting groove 26 is less than the length of the busbar of the truncated cone 14. The cable 13 surrounds the side of the truncated cone 14 and is limited between the limiting groove 26 and the side of the truncated cone 14. In this way, when the rotating component 11 rotates relative to the base 12, the limiting groove 26 can limit the movement direction of the cable 13, so that the cable 13 can move within a limited space to avoid interference.

[0032] In one embodiment, there are multiple rib structures 25, and the multiple rib structures 25 are evenly spaced and arranged along the circumference of the truncated cone 14. Multiple rib structures 25 are provided, so that the effect of limiting the movement direction of the cable 13 is better. Among them, one end of the cable 13 is connected to the connecting block 16 of the rotating component 11, and the other end of the cable 13 is wrapped around the side of the truncated cone 14 and connected to the upper surface 21 of the lower end 20. The part of the cable 13 wrapped around the side of the truncated cone 14 is limited by the limiting groove 26 provided on the rib structure 25.

[0033] In one embodiment, the setting angle The calculation formula is:

[0034] in, is the number of turns of the cable 13 around the truncated cone 14, is the vertical height of the truncated cone 14, is the radius of the cable 13, is the angle between the generatrix of the truncated cone 14 and the center line, is the radius of the bottom end of the truncated cone portion 14 .

[0035] Setting Angle The derivation process of the calculation formula is as follows:

[0036] in, is the maximum redundant length of the cable 13 extending out of the window 19, is the central circumference of the groove portion 18.

[0037] The central circumference of the groove portion 18 The calculation formula is:

[0038] Maximum redundant length of the cable 13 extending out of the window 19 The calculation formula is:

[0039] in, The radius of the top of the truncated cone 14 is The calculation formula is: In this way, the center circumference of the groove portion 18 is , the maximum redundant length of the cable 13 extending out of the window 19 Substitute into the formula In the example, we can get the setting angle The calculation formula for .

[0040] For example, if the number of turns of the cable 13 around the truncated cone 14 is , the radius of cable 13 , the vertical height of the truncated cone 14 , the radius of the bottom end of the truncated cone portion 14 , the angle between the generatrix of the truncated cone 14 and the center line , we can get . Thus, the maximum rotation angle of the rotating component 11 is about 247.98°. Among them, the number of turns of the cable 13 around the truncated cone portion 14, the radius of the cable 13, the vertical height of the truncated cone portion 14, the radius of the bottom end of the truncated cone portion 14, the angle between the busbar and the center line of the truncated cone portion 14 and other dimensional parameters involved in the invention can be changed according to actual needs, and the material of the cable 13 can also be replaced according to actual needs.

[0041] See also Figure 2 As shown, in this embodiment, when the rotating component 11 is at the absolute zero position, that is, when the rotating component 11 rotates to the extreme position in the first direction relative to the base 12, the cable 13 is in a contracted state, and the main length of the cable 13 is distributed at the bottom of the truncated cone portion 14 (that is, the area close to the bottom end of the truncated cone portion 14). Due to the toughness of the cable 13, it is subjected to a certain degree of compressive stress.

[0042] See also Figure 3As shown, when the rotating component 11 rotates in the second direction relative to the base 12, the second direction is the opposite direction of the first direction. The end of the cable 13 connected to the connecting block 16 is subjected to tensile stress, and the tensile stress is along the direction of the cable 13. The tensile stress is vector-decomposed (ignoring the friction between the cable 13 and the side of the truncated cone 14). It can be seen that there is a component of tensile stress along the axial direction of the base 12, so that the cable 13 is displaced along this direction. Due to the limitation of the limiting groove 26 on the rib plate structure 25, the cable 13 will fit the side of the truncated cone 14 and move toward the top of the truncated cone 14. During the movement of the cable 13, due to the gradual reduction of the cross-sectional diameter of the truncated cone 14, when the number of turns of the cable 13 around the truncated cone 14 remains unchanged, the cable 13 will have redundant length, and the redundant length will extend through the window 19 of the upper end 17 of the base 12 and be accommodated in the groove 18. The rotating component 11 can rotate relative to the base 12 in the second direction to an extreme position, at which time the cable 13 is in an extended state. On the contrary, when the rotating component 11 rotates from a non-absolute zero position to the first direction relative to the base 12, the cable 13 is subjected to compressive stress, the component of which causes the cable 13 to fit against the side of the conical portion 14 and move away from the top of the conical portion 14. The redundant length of the cable 13 accommodated in the groove portion 18 will pass through the window 19 and move toward the conical portion 14 to complete the surrounding storage of the cable 13.

[0043] The embodiment of the invention also provides a rotating mechanism, which includes a rotating end, a fixed end and the above-mentioned wraparound wiring device 10. The rotating end is connected to the rotating component 11, and the fixed end is connected to the base 12. One end of the cable 13 is connected to the rotating component 11, and can extend to the rotating end and be electrically connected to the rotating end. The other end of the cable 13 wraps around the side of the truncated cone 14, is connected to the bottom end of the truncated cone 14, and can extend to the fixed end and be electrically connected to the fixed end.

[0044] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the disclosure of the present invention can be performed in parallel, sequentially or in different orders, as long as the desired results of the technical solution disclosed in the present invention can be achieved, and this document does not limit this.

[0045] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A wraparound wiring device, characterized in that: include: Rotating parts; A base, the rotating component is rotatably connected to the base, and the maximum rotation angle of the rotating component is a set angle; the base includes a truncated cone portion, the rotating component is located on one side of the top end of the truncated cone portion; the diameter of the top end of the truncated cone portion is smaller than the diameter of the bottom end of the truncated cone portion; and A cable, one end of which is connected to the rotating component, and the other end of which is wrapped around the side of the truncated cone portion and connected to the bottom end of the truncated cone portion.

2. The wraparound wiring device according to claim 1, characterized in that: The rotating component comprises a main body and a connecting block. The connecting block is rotatably arranged on the main body with the radial direction of the main body as an axis. One end of the cable is connected to the connecting block.

3. The wraparound wiring device according to claim 1, characterized in that: The base includes an upper end portion connected to the top end of the truncated cone portion, the upper end portion is provided with a groove portion and a window connected to the groove portion, the groove portion is recessed downward from the surface of the upper end portion away from the truncated cone portion and extends along the circumference of the upper end portion; one end of the cable passes through the window and is arranged along the groove portion and connected to the rotating component.

4. The wraparound wiring device according to claim 3, characterized in that: The edge of one side of the window close to the center of the upper end portion is in contact with the edge of the top end of the truncated cone portion.

5. The wraparound wiring device according to claim 1, characterized in that: The base includes a lower end portion connected to the bottom end of the truncated cone portion, the lower end portion includes an upper surface, a side surface, and an arc surface connected between the upper surface and the side surface, the arc surface is provided with a plurality of mounting through holes, and the plurality of mounting through holes are evenly spaced and arranged along the circumference of the lower end portion.

6. The wraparound wiring device according to claim 1, characterized in that: The base also includes a rib plate structure arranged on the side of the truncated cone portion, the rib plate structure is provided with a limiting groove, the limiting groove is recessed inward from the side of the rib plate structure close to the side of the truncated cone portion, and extends along the inclined direction of the side of the truncated cone portion; the other end of the cable is wrapped around the side of the truncated cone portion and is limited between the limiting groove and the side of the truncated cone portion.

7. The wraparound wiring device according to claim 6, characterized in that: There are multiple rib plate structures, and the multiple rib plate structures are evenly spaced and arranged along the circumference of the truncated cone portion.

8. The wraparound wiring device according to claim 6, characterized in that: The depth of the limiting groove is greater than the diameter of the cable; and / or The length of the limiting groove is smaller than the length of the generatrix of the truncated cone portion.

9. The wraparound wiring device according to claim 1, characterized in that: The calculation formula of the setting angle is: in, is the number of turns of the cable around the truncated cone, is the vertical height of the truncated cone, is the radius of the cable, is the angle between the generatrix and the center line of the truncated cone, is the radius of the bottom end of the truncated cone portion.

10. A rotating mechanism, characterized in that: It comprises a wrap-around wiring device as described in any one of claims 1-9.

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