Rotary connecting device

Abstract

The utility model belongs to the technical field of electric connecting devices, and discloses a rotary connecting device. The rotary connecting device comprises a shell, a rotating body and a plurality of cables, the shell is provided with a containing cavity and a plurality of wire grooves which extend in the axial direction and are arranged at intervals, the rotating body is rotationally arranged in the containing cavity, an annular space is formed by the rotating body and the inner wall of the shell, and the rotating body comprises a first rotating part and a second rotating part which are detachably connected; the plurality of cables are wound around the periphery of the rotating body and are sequentially arranged in the radial direction of the rotating body, the first ends of the plurality of cables are limited between the first rotating part and the second rotating part, the connection stability of all the cables can be ensured, the connection effect is further ensured, the second ends of the plurality of cables can extend out of the shell from one wire slot, and the connection stability of the cables is improved. And moreover, the plurality of cables can be accommodated in the annular space in a tensioned or loosened state under the driving of the rotating body, so that the cable connector has relatively good electrical connection stability and reliability.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric connection device technical field especially relates to rotary connection device. BACKGROUND

[0002] FFC (Flexible Flat Cable, flexible flat cable) is a kind of new data cable that PET insulating material and very thin tinned flat copper wire are compressed by high-tech automatic equipment production line, with soft, arbitrary bending folding, thin, small, simple connection, convenient disassembly, easy to solve electromagnetic shielding (EMI) and other advantages, commonly used in consumer electronics products such as printer, scanner etc., automotive electronics such as instrument panel, sound system, navigation equipment etc., and medical equipment such as medical imaging equipment, monitor etc. many different fields.

[0003] In four-wheel vehicle and so on vehicle, the rotary connector device for supplying power to air bag device etc. is installed at the connection of steering wheel and steering shaft for steering, and the rotary connector device usually includes stator, rotor and flexible flat cable, the rotor can be installed in the stator in the form of rotation, and the flexible flat cable is wound and stored in the annular space formed by the stator and the rotor, wherein the rotor is usually of integral structure, and the flexible flat cable is inconvenient to install and position, which can easily lead to the falling of flexible flat cable.

[0004] Therefore, a rotary connection device is needed to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of rotary connection device, can ensure the installation stability of flexible flat cable, further can ensure the use performance of rotary connection device, and shell is provided with several line grooves, can improve the versatility of the rotary connection device.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] The utility model discloses a rotary connecting device, its characterized in being: the rotary connecting device includes a shell, a rotating body and a plurality of cables, the shell has a containing cavity, the shell is provided with a plurality of wire slots extending along the axial direction, and a plurality of wire slots are sequentially and spaced apart, the rotating body is rotationally arranged in the containing cavity and forms an annular space with the inner wall of the shell, the rotating body includes a first rotating part and a second rotating part that can be detachably connected, all the cables are arranged around the rotating body, and all the cables are sequentially arranged along the radial direction of the rotating body, the first end of the cable is limited between the first rotating part and the second rotating part, the second end of the cable can be selectively extended out of the shell through the wire slot and fixed, and all the cables can be accommodated in the annular space in a tensioned or relaxed state under the driving of the rotating body.

[0008] As an optional technical solution, one of the first rotating part and the second rotating part is provided with a plug hole, and the other of the first rotating part and the second rotating part is provided with a plug, the plug hole and the plug are matched to enable the first rotating part and the second rotating part to be detachably connected.

[0009] As an optional technical solution, the bottom of the first rotating part is provided with a first rotating part, the plug hole is arranged on the first rotating part, the bottom of the second rotating part is provided with a second rotating part, and the plug is arranged on the second rotating part, and the first rotating part and the second rotating part are rotationally arranged in the shell.

[0010] As an optional technical solution, the shell includes a body and a bearing seat, the bottom of the body is provided with a mounting hole, the bearing seat is mounted on the mounting hole, the bearing seat is provided with a rotating cavity, the rotating cavity and the containing cavity are communicated, and the first rotating part and the second rotating part are rotationally arranged in the rotating cavity.

[0011] As an optional technical solution, a limiting column is arranged on the first rotating part, a limiting hole is arranged on the cable, and the limiting column is arranged in the limiting hole to limit the cable.

[0012] As an optional technical solution, a transition surface is further arranged on the second rotating part, and the transition surface is connected between the end surface of the second rotating part facing the first rotating part and the side surface of the second rotating part.

[0013] As an optional technical solution, a boss is further arranged on the second rotating part, and the boss is arranged at one end of the transition surface away from the second rotating part.

[0014] As an optional technical scheme, the rotating body is further provided with a guide part, the guide part is used for connecting all the cables to the corresponding connected parts one by one.

[0015] As an optional technical scheme, the rotating connecting device further comprises a plurality of fixing parts, the plurality of fixing parts and the plurality of wire grooves are arranged one by one, and the fixing parts are used for positioning the cables extending out of the wire grooves.

[0016] As an optional technical scheme, the rotating connecting device further comprises a driving part, the driving part is installed on the outer side of the bottom of the shell, the driving part is in transmission connection with the rotating part, and the driving part is used for driving the rotating part to rotate.

[0017] The utility model discloses beneficial effect:

[0018] The utility model discloses a rotating connecting device, this rotating connecting device includes shell, rotating body and a plurality of cables, and the shell has the accommodation cavity, still be provided with a plurality of along the axial extension interval arrangement's wire groove, rotating body rotation setting in the accommodation cavity, and with the annular space of shell's inner wall is formed, and the rotating body includes the first rotating part and the second rotating part of detachable connection, a plurality of cables are around the peripheral part of rotating body, and a plurality of cables are sequentially arranged along the radial of rotating body, and the first end of a plurality of cables all are limited between the first rotating part and the second rotating part, can ensure the connection stability of all cables, and then ensure the connection effect, and the second end of a plurality of cables can select wire groove and extend the shell, promote the convenience and versatility of use, and a plurality of cables can be received in the annular space in the state of tension or relaxation under the driving of rotating body, and the rotating body and the second end of cable of this rotating connecting device are used to be connected to different connected parts, can convert the position of cable brought by the rotation of rotating body into the tension or relaxation of cable in the annular space, and then ensure the electrical connection stability and reliability of rotating connecting device. ACCURATE DRAWINGS

[0019] Figure 1 It is the first structure schematic diagram of the rotating connecting device of the utility model embodiment 1.

[0020] Figure 2 It is the second structure schematic diagram of the rotating connecting device of the utility model embodiment 1.

[0021] Figure 3 It is the overhead view of the rotating connecting device (end cover hides) of the utility model embodiment.

[0022] Figure 4 It is the explosion drawing of the rotating connecting device of the utility model embodiment 1.

[0023] Figure 5 is a structural schematic view of the shell body of the embodiment of the utility model;

[0024] Figure 6 is a structural schematic view of the bearing seat of the embodiment 1 of the utility model;

[0025] Figure 7 is a structural schematic view of the first rotating member of the embodiment of the utility model;

[0026] Figure 8 is a structural schematic view of the second rotating member of the embodiment of the utility model;

[0027] Figure 9 is a structural schematic view of the rotary connecting device of the embodiment 2 of the utility model;

[0028] Figure 10 is an exploded view of the rotary connecting device of the embodiment 2 of the utility model;

[0029] Figure 11 is a structural schematic view of the bearing seat of the embodiment 2 of the utility model.

[0030] In the drawing:

[0031] 10, shell; 11, accommodating cavity; 12, wire slot; 13, annular space; 14, shell body; 15, bearing seat; 151, rotating cavity; 152, through hole; 16, end cover;

[0032] 20, rotating body; 21, first rotating member; 211, first rotating part; 212, first end face; 2111, plug-in part; 213, limiting column; 214, accommodating groove; 215, first supporting table; 22, second rotating member; 221, second rotating part; 222, second end face; 2211, plug-in hole; 223, transition surface; 224, boss; 225, limiting blind hole; 226, second supporting table; 23, conducting part;

[0033] 30, cable; 31, limiting hole;

[0034] 40, fixing bolt;

[0035] 50, driving member. DETAILED DESCRIPTION

[0036] The utility model will be further explained in detail in combination with the drawings and embodiments. It can be understood that the specific embodiments described here are only used to explain the utility model, and not limit the utility model. In addition, it needs to be explained that in order to facilitate the description, only the part related to the utility model is shown in the drawing, not all structures.

[0037] In the description of the utility model, unless another definite provision and limitation, the term "link", "connection", "fix" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated; can be mechanical connection, also can be electrical connection; can be direct connection, also can be indirectly connected through intermediate medium, can be the communication of two elements or the interaction of two elements. For ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.

[0038] In the utility model, unless another definite provision and limitation, the first feature is "on" or "under" the second feature can include the direct contact of the first and second features, also can include the contact of the first and second features not direct contact but through the contact between other features between them. Moreover, the first feature is "on", "above" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or just indicates that the horizontal height of the first feature is higher than the second feature. The first feature is "under", "below" and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or just indicates that the horizontal height of the first feature is less than the second feature.

[0039] In the description of the embodiment, the orientation or position relationship of the terms "on", "under", "right", etc. is based on the orientation or position relationship shown in the drawing, only for the convenience of description and simplification operation, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as the limitation of the utility model. In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.

[0040] Example 1

[0041] As Figures 1 to 8As shown, the embodiment provides a rotary connecting device, which comprises a shell 10, a rotating body 20 and a plurality of cables 30, the shell 10 has a receiving cavity 11, the shell 10 is provided with a plurality of wire grooves 12 extending along the axial direction, and the plurality of wire grooves 12 are sequentially and spacedly arranged, the rotating body 20 is rotationally arranged in the receiving cavity 11 and forms an annular space 13 with the inner wall of the shell 10, the rotating body 20 comprises a first rotating part 21 and a second rotating part 22 which are detachably connected, all the cables 30 are arranged around the peripheral portion of the rotating body 20, and all the cables 30 are sequentially arranged along the radial direction of the rotating body 20, the first ends of all the cables 30 are limited between the first rotating part 21 and the second rotating part 22, and the second ends of the cables 30 can extend out of the shell 10 through the wire grooves 12 selectively, and all the cables 30 can be received in the annular space 13 in a tensioned or relaxed state under the driving of the rotating body 20. Specifically, in the embodiment, the rotating body 20 is connected to a connected part which needs to be rotated, the second ends of the cables 30 are connected to a fixedly arranged connected part, and the first ends of the cables 30 are limited between the first rotating part 21 and the second rotating part 22 of the rotating body 20, the first rotating part 21 and the second rotating part 22 are detachably connected, which can ensure the convenience of installation of the cables 30 and guarantee the better stability of the cables 30, and ensure the use performance; the annular space 13 is formed between the rotating body 20 and the inner wall of the shell 10, the cables 30 are arranged around the peripheral portion of the rotating body 20, the first ends of the cables 30 are limited to the rotating body 20, and the rotating body 20 can drive the first ends of the cables 30 to rotate when the rotating body 20 rotates, since the second ends of the cables 30 are fixed, the cables 30 can be tensioned or relaxed in the annular space 13, thereby the length variation of the cables 30 caused by the rotation of the rotating body 20 can be offset, and the stability of the electrical connection of the two ends of the connected parts can be ensured. Moreover, the plurality of cables 30 are sequentially arranged along the radial direction of the rotating body 20, and the lengths of the plurality of cables 30 extending out through the different wire grooves 12 are different along the rotation direction of the rotating body 20, which can ensure the better integrity of the plurality of cables 30 when the rotating body 20 drives the plurality of cables 30 to rotate, and avoid the mutual extrusion between the cables 30.

[0042] Specifically, in the embodiment, as shown in Figure 3 , three cables 30 are arranged, and two wire grooves 12 are arranged, two cables 30 extend out of one wire groove 12, and the other cable 30 extends out of the other wire groove 12. In other embodiments, the number of the cables 30 and the number of the wire grooves 12 can be arranged according to actual use, and part of the wire grooves 12 can also have no cable 30 extending out, which is not limited herein.

[0043] Further, please refer to Figure 7 and Figure 8, one of the first rotating member 21 and the second rotating member 22 is provided with a plug hole 2211, the other of the first rotating member 21 and the second rotating member 22 is provided with a plug 2111, the plug hole 2211 and the plug 2111 are matched to be arranged to make the first rotating member 21 and the second rotating member 22 be detachably connected. Specifically, in the embodiment, the first rotating member 21 and the second rotating member 22 are both semicylindrical, the first rotating member 21 is provided with a first end face 212, the second rotating member 22 is provided with a second end face 222, when the first rotating member 21 and the second rotating member 22 are connected, the first end face 212 and the second end face 222 abut, the plug 2111 is arranged on the first end face 212, and the plug hole 2211 is arranged on the second end face 222, which can make the first rotating member 21 and the second rotating member 22 have the advantages of convenient disassembly and reliable connection.

[0044] Specifically, in the embodiment, the plug 2111 is a cylindrical structure, and the plug hole 2211 is a circular hole. In another embodiment, the shape of the plug 2111 and the shape of the plug hole 2211 can be specifically arranged according to actual use, which is not described here.

[0045] Specifically, in the embodiment, two plugs 2111 are arranged along the horizontal direction, and two plug holes 2211 are also arranged along the horizontal direction, which can ensure the connection stability between the first rotating member 21 and the second rotating member 22 and improve the use performance.

[0046] Further, referring to Figure 7 , the bottom of the first rotating member 21 is provided with a first rotating part 211, the plug hole 2211 is arranged on the first rotating part 211, the bottom of the second rotating member 22 is provided with a second rotating part 221, the plug 2111 is arranged on the second rotating part 221, and the first rotating part 211 and the second rotating part 221 are rotatably arranged on the shell 10. Specifically, in the embodiment, the arrangement of the first rotating part 211 and the second rotating part 221 can make the shell 10 have a better limiting effect on the first rotating part 211 and the second rotating part 221, which can not only ensure the normal rotation of the rotating body 20, but also ensure that the first rotating member 21 and the second rotating member 22 are always in a connected state, thereby ensuring the stability of the cable 30 and improving the use effect.

[0047] Further, referring to Figure 1 , Figure 2 , Figure 5 and Figure 6, the shell 10 includes a body and a bearing seat 15, the bottom of the body is provided with a mounting hole, the bearing seat 15 is installed in the mounting hole, the bearing seat 15 is provided with a rotating cavity 151, the rotating cavity 151 and the containing cavity 11 are communicated, and the first rotating part 211 and the second rotating part 221 are rotatably arranged in the rotating cavity 151. Specifically, in the embodiment, the body further includes a shell 10 body and an end cover 16, the bottom of the shell 10 body is provided with a mounting hole, the bearing seat 15 is installed in the mounting hole, an opening is arranged on the end face of the shell 10 body away from the mounting hole, and the rotating body 20 and the cable 30 are installed through the opening, the end cover 16 is used for plugging the opening of the shell 10 body, and the use performance is ensured, the bearing seat 15 is provided with the rotating cavity 151 communicated with the containing cavity 11, the first rotating part 211 and the second rotating part 221 are rotatably arranged in the rotating cavity 151, and the rotating cavity 151 can limit the first rotating part 211 and the second rotating part 221, thereby avoiding separation of the first rotating part 21 and the second rotating part 22, and effectively ensuring the installation stability of the cable 30.

[0048] Further, please refer to Figure 4 and Figure 7 , the first rotating part 21 is provided with a limiting column 213, the cable 30 is provided with a limiting hole 31, and the limiting column 213 is arranged in the limiting hole 31 to limit the cable 30. Specifically, in the embodiment, the first rotating part 21 is provided with two limiting columns 213, the two limiting columns 213 are arranged in the vertical direction, the cable 30 is provided with two limiting holes 31 arranged in the width direction of the cable 30, and the two limiting columns 213 are arranged in the two limiting holes 31 one by one, thereby limiting the cable 30.

[0049] Specifically, in the embodiment, please refer to Figure 7 , the first rotating part 21 is provided with a containing groove 214, the limiting column 213 is arranged in the containing groove 214, and the containing groove 214 is used for providing a containing space for the cable 30, thereby ensuring that the cable 30 has enough space to avoid mutual extrusion between the cables 30, thereby ensuring the use performance of the cable 30.

[0050] Specifically, in the embodiment, please refer to Figure 8 , the second rotating part 22 is provided with a limiting blind hole 225, the two limiting blind holes 225 are arranged in the vertical direction, and the two limiting columns 213 are arranged in the two limiting blind holes 225 one by one, thereby improving the installation stability of the cable 30 and avoiding loosening.

[0051] Further, please refer to Figure 8The second rotating member 22 is further provided with a transition surface 223, which is connected between the end surface of the second rotating member 22 facing the first rotating member 21 and the side surface of the second rotating member 22. Specifically, in the embodiment, the transition surface 223 is arranged along the centrifugal direction of the first rotating member 21, and transitions between the second end surface 222 and the side surface of the second rotating member 22, thereby enabling the accommodation space and the annular space 13 to be communicated, guiding the cable 30, and ensuring that the cable 30 has sufficient space when relaxed, thereby improving the smoothness during use.

[0052] Further, referring to Figure 8 The second rotating member 22 is further provided with a boss 224, which is arranged at one end of the transition surface 223 away from the second rotating part 221. Specifically, in the embodiment, this arrangement enables the transition surface 223 of the second rotating member 22 to limit the cable 30, effectively ensuring that the cable 30 can be normally tensioned or relaxed, and ensuring its use performance.

[0053] Specifically, in the embodiment, referring to Figure 7 and Figure 8 The first rotating member 21 is provided with a first supporting table 215, and the second rotating member 22 is provided with a second supporting table 226, and the first supporting table 215 and the second supporting table 226 form a supporting table for supporting the cable 30.

[0054] Further, referring to Figures 1 to 3 The rotating body 20 is further provided with a communication part 23, which is used to connect each cable 30 to the corresponding connected part. Specifically, in the embodiment, the communication part 23 arranged on the first rotating member 21 can be electrically connected with the first end of the cable 30, and can be connected with the corresponding connected part of the cable 30, thereby ensuring the normal use of the rotary connection device.

[0055] Specifically, in the embodiment, the communication part 23 can be specifically arranged according to actual use, which can be a PCB or other parts for electrical connection, which is not limited here.

[0056] Further, referring to Figure 1 and Figure 2 The rotary connection device further comprises a plurality of fixing members, which are arranged one by one with the plurality of wire grooves 12, and the fixing members are used to position the cables 30 extending out of the wire grooves 12. Specifically, in the embodiment, the fixing members include two fixing bolts 40, and the wire groove 12 is provided with two threaded holes arranged along the length direction of the wire groove 12, and the two fixing bolts 40 are threadedly connected with the two threaded holes one by one, thereby enabling the two side edges of the cable 30 to be pressed tightly by the two fixing bolts 40 respectively, thereby ensuring the use stability of the cable 30.

[0057] The rotating body 20 of the rotating connecting device described above can rotate by a certain angle under the driving of the rotating connected part connected thereto, the cable 30 moves under the driving of the rotating body 20, so that the cable 30 is converted into a relaxed state, when the rotating body 20 returns to the original position, the cable 30 returns to the original position under its own flexibility, thereby ensuring the use performance of the rotating connecting device.

[0058] Embodiment 2

[0059] As Figures 9 to 11 shown, the rotating connecting device provided in the embodiment is different from the rotating connecting device in Embodiment 1 in that the rotating connecting device in the embodiment further comprises a driving member 50.

[0060] Specifically, referring to Figure 9 and Figure 11 , the driving member 50 is installed on the outer side of the bottom of the shell 10, and the driving member 50 is in transmission connection with the rotating body 20, and the driving member 50 is used to drive the rotating body 20 to rotate. Specifically, in the embodiment, when the rotating body 20 is used in a situation where it needs to rotate by a large angle, for example, the rotating body 20 needs to rotate by three, four or even more turns, the cable 30 cannot be reset due to the flexibility of the metal itself, by providing the driving member 50, the driving member 50 can drive the rotating body 20 to rotate, thereby driving the cable 30 to reset, and ensuring its use performance.

[0061] Specifically, in the embodiment, referring to Figure 9 and Figure 11 , the driving member 50 is a motor, the bearing seat 15 is provided with a through hole 152, the motor is installed on the side of the bearing seat 15 away from the body of the shell 10 by bolts, and the output shaft of the motor is in transmission connection with the rotating body 20 after the through hole 152 to realize the transmission.

[0062] Obviously, the above embodiments of the utility model are only examples for clearly illustrating the utility model, and are not a limitation on the embodiments of the utility model. For ordinary skilled in the art, various obvious changes, re-adjustment and replacement can be made without departing from the protection scope of the utility model. Here, it is not necessary and impossible to enumerate all the embodiments. Any modification, equivalent replacement and improvement made within the spirit and principle of the utility model should be included in the protection scope of the utility model claim.

Claims

1. A rotary connection device, characterized in that The rotating connecting device comprises a shell (10), a rotating body (20) and a plurality of cables (30), the shell (10) has a containing cavity (11), the shell (10) is provided with a plurality of wire grooves (12) extending along the axial direction, and the wire grooves (12) are sequentially and spacedly arranged, the rotating body (20) is rotationally arranged in the containing cavity (11) and forms an annular space (13) with the inner wall of the shell (10), the rotating body (20) comprises a first rotating part (21) and a second rotating part (22) which are detachably connected, all the cables (30) are arranged around the periphery of the rotating body (20), and all the cables (30) are sequentially arranged along the radial direction of the rotating body (20), the first end of the cable (30) is limited between the first rotating part (21) and the second rotating part (22), the second end of the cable (30) can selectively extend out of the shell (10) through the wire groove (12) and be fixed, and all the cables (30) can be accommodated in the annular space (13) in a tensioned or relaxed state under the driving of the rotating body (20).

2. The rotary connection of claim 1, wherein, One of the first rotating part (21) and the second rotating part (22) is provided with a plug hole (2211), the other of the first rotating part (21) and the second rotating part (22) is provided with a plug (2111), and the plug hole (2211) and the plug (2111) are matched to enable the first rotating part (21) and the second rotating part (22) to be detachably connected.

3. The rotary connection of claim 2, wherein, The bottom of the first rotating part (21) is provided with a first rotating part (211), the plug hole (2211) is arranged on the first rotating part (211), the bottom of the second rotating part (22) is provided with a second rotating part (221), the plug (2111) is arranged on the second rotating part (221), and the first rotating part (211) and the second rotating part (221) are rotationally arranged in the shell (10).

4. The rotary connection of claim 3, wherein, The shell (10) comprises a body and a bearing seat (15), the bottom of the body is provided with a mounting hole, the bearing seat (15) is mounted on the mounting hole, the bearing seat (15) is provided with a rotating cavity (151), the rotating cavity (151) is communicated with the containing cavity (11), and the first rotating part (211) and the second rotating part (221) are rotationally arranged in the rotating cavity (151).

5. The rotary connection of claim 3, wherein, A limiting column (213) is arranged on the first rotating part (21), a limiting hole (31) is arranged on the cable (30), and the limiting column (213) is arranged in the limiting hole (31) to limit the cable (30).

6. The rotary connection of claim 3, wherein, The second rotating part (22) is further provided with a transition surface (223), and the transition surface (223) is connected between the end surface of the second rotating part (22) facing the first rotating part (21) and the side surface of the second rotating part (22).

7. The rotary connection of claim 6, wherein, The second rotating part (22) is further provided with a boss (224) arranged at one end of the transition surface (223) away from the second rotating part (221).

8. A rotary coupling according to any one of claims 1-7, characterised in that The rotating body (20) is further provided with a guide part (23) for connecting all the cables (30) to corresponding connected parts one by one.

9. The rotary connection of claim 8, wherein, The rotating connection device further comprises a plurality of fixing parts corresponding to the wire grooves (12) one by one, which are used for positioning the cables (30) extending out of the wire grooves (12).

10. The rotary connection of claim 9, wherein, The rotating connection device further comprises a driving part (50) mounted on the outer side of the bottom of the shell (10) and in transmission connection with the rotating body (20), which is used for driving the rotating body (20) to rotate.

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