Cable unwrapping device for animal head-mounted brain imaging equipment

Abstract

The embodiment of the utility model discloses a cable unwrapping device for animal head-mounted brain imaging equipment, the cable unwrapping device comprises a slip ring, a fixed part and a rotating part, the slip ring comprises a stator and a rotor which are rotatably connected, and the stator and the rotor are fixedly connected with the fixed part and the rotating part respectively; the rotating part is provided with a first bearing and a rotating rod, the first bearing is coaxially arranged with a rotating shaft of the rotor in the axial direction, the rotating rod is in bearing fit with the first bearing, and one end, far away from the rotating part, of the rotating rod is provided with a fixing structure capable of fixing a cable; the rotation damping of the first bearing is smaller than the rotation damping between the rotor and the stator. Through cooperation of the first bearing and the rotating rod, winding of the cable is accumulated above the fixing structure, the sliding ring rotates reversely in the winding direction to release the accumulated winding, meanwhile, the cable below the fixing structure is kept stable and does not swing along with the cable, and therefore interference to experimental animals in the cable unwinding process is effectively reduced.

Description

Technical Field

[0001] Several embodiments of this specification relate to the field of cable untangling technology, specifically to a cable untangling device for an animal head-mounted brain imaging device. Background Technology

[0002] Head-mounted imaging microscopes can simultaneously achieve high spatiotemporal resolution imaging of neuronal activity and blood oxygen metabolism in freely moving mice, providing new insights for studying the neurovascular coupling mechanism of the brain and developing brain-computer interface technology. This technology, applied to the non-invasive acquisition of animal brain functional information, helps provide scientific evidence for new treatment strategies and interventions for brain diseases. Currently, common head-mounted brain imaging devices require connection to external signal acquisition devices via cables. During prolonged activity of experimental animals, the cables are prone to tangling, leading to shortened cable length, increased cable torque, and hindered animal movement. Solving the tangling problem usually requires manually releasing the cable, but this interrupts the experimental process. Using a pre-existing long cable poses a risk of the experimental animal biting the cable.

[0003] Chinese utility model patent with patent number CN202111651919.3 discloses an active unwinding device and method for observing freely moving animals. It measures the rotation angle or torque of the data acquisition device through a sensing device, and controls the stepper motor to drive the active gear to drive the rotation of the data acquisition device on the driven gear, thereby eliminating cable entanglement and twisting that occurs during the movement of live animals.

[0004] However, its unwinding action still causes significant disturbance to the experimental animals. The data acquisition device is fixed to the tooth surface of the driven gear by the support frame. When the driven gear rotates and drives the data acquisition device to rotate, the connecting part will produce a large swing, which will still interfere with the activity of the experimental animals, resulting in the data acquisition being interrupted. Summary of the Invention

[0005] This specification provides a cable untangling device for an animal head-mounted brain imaging device. The device uses a first bearing and a rotating rod to accumulate cable windings above a fixed structure. A slip ring rotates in the opposite direction of the winding to release the accumulated windings. Simultaneously, the cable below the fixed structure remains stable and does not swing, effectively reducing interference to the experimental animal during cable untangling. The technical solution is as follows:

[0006] A cable untangling device for an animal head-mounted brain imaging device includes a slip ring, a fixing part, and a rotating part. The slip ring includes a stator and a rotor that are rotatably connected, and the stator and the rotor are respectively fixedly connected to the fixing part and the rotating part.

[0007] The rotating part is provided with a first bearing coaxially arranged with the rotation axis of the rotor and a rotating rod that cooperates with the first bearing. The end of the rotating rod away from the rotating part is provided with a fixing structure for fixing cables.

[0008] The rotational damping of the first bearing is less than the rotational damping between the rotor and the stator.

[0009] As a preferred embodiment, the rotating part includes a first housing, the top of the first housing is fixedly connected to the rotor, and a bearing seat is provided at the bottom of the first housing. The bearing seat has a central through-hole forming a first channel that is coaxially arranged with the rotation axis of the rotor and is relatively close to the rotating part, and a second channel that is relatively far away from the rotating part. The diameter of the first channel is larger than the diameter of the second channel. The first bearing is disposed in the first channel and is interference-fitted with the bearing seat. The clearance of the rotating rod is disposed in the second channel.

[0010] As a preferred embodiment, the rotor is fixedly connected to the rotating part, and the stator is fixedly connected to the fixed part;

[0011] The fixed part is provided with a drive motor and a transmission component that enables the drive motor to be connected to the rotor.

[0012] As a preferred embodiment, the transmission assembly includes a first pulley fitted onto the rotor, a second pulley fitted onto the drive end of the drive motor, and a transmission belt.

[0013] As a preferred embodiment, the fixing part includes a second housing with an open top and a mounting bracket fixedly disposed inside the second housing and parallel to the bottom of the second housing, wherein the stator of the drive motor and the slip ring are disposed on the mounting bracket;

[0014] The mounting bracket includes a first mounting hole for the rotor to pass through and a second mounting hole for the drive shaft of the drive motor to pass through;

[0015] The bottom of the second housing has an opening for the first pulley to extend out of the second housing.

[0016] As a preferred embodiment, the mounting bracket includes a support portion that is fixedly connected to the second housing at both ends, and the first mounting hole is disposed in the middle of the support portion;

[0017] The mounting bracket further includes an extension disposed in the middle of the support portion and perpendicular to the support portion, and the second mounting hole is disposed on the extension portion.

[0018] As a preferred embodiment, the system further includes a second bearing coaxially arranged with the rotation axis of the rotor. The two end faces of the inner ring of the second bearing are fixedly connected to the rotating part and the first pulley, respectively, and the outer ring of the second bearing is fixedly connected to the bottom of the second housing, so that the fixed part and the rotating part can be coupled through the second bearing.

[0019] As a preferred embodiment, the rotational damping of the second bearing is greater than the rotational damping between the rotor and stator of the slip ring.

[0020] As a preferred embodiment, the system further includes a sensor capable of detecting the rotation of the rotating rod and a controller connected to the sensor. The controller is electrically connected to the drive motor to control the rotation of the drive motor based on the rotation of the rotating rod.

[0021] As a preferred embodiment, the fixing part further includes a top cover that is detachably connected to the top of the second housing. The top cover has a mounting part vertically provided on its end face, and the top cover has a wire hole and a winding groove communicating with the wire hole.

[0022] The beneficial effects of the technical solutions provided in some embodiments of this specification include at least the following:

[0023] 1. The rotational damping of the first bearing is less than the rotational damping between the rotor and stator of the slip ring. The rotating rod is easily driven to rotate by the cable, causing the cable to accumulate and entangle between the fixed structure and the slip ring. When the entanglement reaches a certain extent, the rotating part is manually or automatically controlled to rotate the slip ring in the opposite direction to the cable entanglement. Since the force exerted by the cable on the rotating rod through the fixed structure is in the same direction as the cable entanglement, the rotating rod rotates in the opposite direction relative to the rotating part, thus untangling the entangled portion of the cable. Furthermore, since the rotating rod and the rotor's rotation axis are coaxial, the portion of the cable below the fixed structure will not swing and interfere with the activities of the experimental animals during the untangling process.

[0024] 2. By controlling the drive motor rotation via wired or wireless means, it is possible to remotely, quickly, and accurately untangle cables that may be formed by small animals due to experimental activities or environmental interactions, avoiding human intervention. Experimenters can remotely control the electric untangling device, reducing interference with the experimental process and ensuring the continuity of data acquisition.

[0025] 3. Belt drive is used to transmit the driving force of the drive motor, which has the advantages of low noise and slow speed. This helps to reduce stimulation and interference to small animals, avoids behavioral deviations in experimental animals caused by untying operations, and ensures the scientific nature and accuracy of experimental results.

[0026] 4. The mounting frame allows researchers to match and install motors of different speeds according to the activity characteristics of different experimental animals, achieving different speed functions. It can be flexibly adjusted according to different animal types and entanglement situations, thereby improving the untangling effect.

[0027] 5. The second bearing enables bearing engagement between the fixed and rotating parts. As a force-bearing structure along the rotor's rotation axis, it prevents the slip ring rotor from bearing excessive axial force and damaging the slip ring. In addition, it indirectly increases the minimum threshold for the rotor to rotate due to the cable's torsional force, allowing the rotor to accumulate greater cable torsional force. This reduces the number of unwinding operations, increases the unwinding interval, and allows for planned unwinding and exclusion of corresponding data segments, thereby ensuring data transmission quality. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of a cable untangling device for an animal head-mounted brain imaging device provided in the embodiments of this specification.

[0030] Figure 2 This is a longitudinal exploded view of the fixing part and its internal structure of a cable untangling device for an animal head-mounted brain imaging device provided in the embodiments of this specification, showing the specific arrangement of the mounting bracket, drive motor, slip ring, and transmission components (the transmission belt is not shown).

[0031] Figure 3 This is a longitudinal exploded view of the rotating part and its internal structure of a cable untangling device for an animal head-mounted brain imaging device provided in the embodiments of this specification, showing the specific arrangement of the bearing seat, the first bearing, and the rotating rod.

[0032] Figure 4 This is a cross-sectional view of a bearing housing for a cable untangling device for an animal head-mounted brain imaging device, as provided in an embodiment of this specification, showing a first channel and a second channel.

[0033] Figure 5 This is a schematic diagram of the structure of a mounting bracket for a cable untangling device for an animal head-mounted brain imaging device provided in the embodiments of this specification, showing the support part, the extension part, the first mounting hole, and the second mounting hole.

[0034] Figure 6This is a longitudinal exploded view of a cable untangling device for an animal head-mounted brain imaging device provided in the embodiments of this specification.

[0035] In the diagram: 1. Slip ring; 11. Stator; 12. Rotor; 2. Fixing part; 21. Second housing; 22. Mounting bracket; 221. First mounting hole; 222. Second mounting hole; 223. Support part; 224. Extension part; 23. Top cover; 231. Mounting plate; 232. Winding groove; 3. Rotating part; 31. First housing; 32. Bearing seat; 321. First channel; 322. Second channel; 4. First bearing; 5. Rotating rod; 6. Fixing structure; 7. Drive motor; 8. Transmission assembly; 81. First pulley; 82. Second pulley; 9. Second bearing. Detailed Implementation

[0036] The technical solutions in the embodiments of this specification will be clearly and completely described below with reference to the accompanying drawings.

[0037] The terms "first," "second," "third," etc., in the description, claims, and accompanying drawings are used to distinguish different objects, not to describe a particular order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0038] The following description provides examples and does not limit the scope, applicability, or examples set forth in the claims. Changes may be made to the function and arrangement of the described elements without departing from the scope of this specification. Various processes or components may be appropriately omitted, substituted, or added to the examples. Furthermore, features described with respect to some examples may be combined into other examples.

[0039] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

[0040] Reference Figure 1 , Figure 2 , Figure 3 As shown, this specification provides a cable untangling device for an animal head-mounted brain imaging device according to one embodiment.

[0041] The cable untangling device includes a slip ring 1, a fixed part 2 and a rotating part 3. The slip ring 1 includes a stator 11 and a rotor 12 that are rotatably connected. The stator 11 and the rotor 12 are fixedly connected to the fixed part 2 and the rotating part 3, respectively.

[0042] The rotating part 3 is provided with a first bearing 4 that is coaxially arranged with the rotating shaft of the rotor 12 and a rotating rod 5 that cooperates with the first bearing 4. The end of the rotating rod 5 away from the rotating part 3 is provided with a fixing structure 6 for fixing cables.

[0043] The rotational damping of the first bearing 4 is less than the rotational damping between the rotor 12 and the stator 11.

[0044] For illustrative purposes, the first bearing 4 is a miniature ball bearing with low frictional resistance and high rotational speed.

[0045] For example, in this embodiment, the fixing structure 6 is described using an alligator clip. The slip ring 1 can be a fixed connection between the stator 11 and the fixing part 2, and a fixed connection between the rotor 12 and the rotating part 3, or a fixed connection between the rotor 12 and the fixing part 2, and a fixed connection between the stator 11 and the rotating part 3. In this embodiment, the fixed connection between the stator 11 and the fixing part 2, and the fixed connection between the rotor 12 and the rotating part 3 are used as an example for explanation.

[0046] Explanatoryly, the signal acquisition device and the head-mounted brain imaging device are electrically connected to their respective interfaces on the rotor 12 and stator 11 of the slip ring 1. A fixing structure 6 is then used to secure the cable between the head-mounted brain imaging device and the electrical interface of the rotor 12 or stator 11 connected to the rotating part 3, ensuring the cable remains slack between the fixing structure 6 and the electrical interface of the rotor 12 or stator 11 connected to the rotating part 3. When the experimental animal moves, causing the cable to rotate, the cable will preferentially begin winding from the end closest to the electrical interface of the rotor 12 or stator 11 connected to the rotating part 3. The rotation of the cable causes the rotating rod 5 to rotate relative to the first bearing 4, thus winding along the length of the rotating rod 5. After winding to a certain extent, the rotating part 3 is manually or automatically controlled to rotate the rotor 12 or stator 11 connected to the rotating part 3 in the opposite direction to the cable winding direction. Because the force applied to the rotating rod 5 by the cable through the fixing structure 6 is in the same direction as the cable winding, the rotating rod 5 rotates in the opposite direction relative to the rotating part 3, causing the wound portion of the cable to unwind. Furthermore, since the rotating rod 5 and the rotor 12 are coaxially mounted, and the torque of the first bearing 4 is much smaller than that of the slip ring 1, the portion of the cable below the fixed structure 6 remains relatively independent during the unwinding process and will not swing or interfere with the activities of the experimental animals. Because the rotational damping between the rotor 12 and stator 11 of the slip ring 1 is relatively large, the cable cannot easily drive the rotor 12 and stator 11 of the slip ring 1 to rotate relative to each other. Since the rotational damping of the first bearing 4 is smaller than that between the rotor 12 and stator 11 of the slip ring 1, the rotating rod 5 is easily driven to rotate by the cable, thus accumulating entanglement.

[0047] In several embodiments of this specification, in conjunction with the appendix Figure 3 and attached Figure 4The rotating part 3 includes a first housing 31. The top of the first housing 31 is fixedly connected to the rotor 12. A bearing seat 32 is provided at the bottom of the first housing 31. The bearing seat 32 has a through-hole forming a first channel 321 that is coaxial with the rotation axis of the rotor 12 and is relatively close to the rotating part 3 and a second channel 322 that is relatively far away from the rotating part 3. The diameter of the first channel 321 is larger than the diameter of the second channel 322. The first bearing 4 is disposed in the first channel 321 and is interference-fitted with the bearing seat 32. The rotating rod 5 is disposed with a gap in the second channel 322.

[0048] For example, such as Figure 3 As shown, for ease of assembly, the bottom plate of the first housing 31 is detachably connected to the main body. The bearing seat 32 has a simple structure, consisting of a hollow rod-shaped structure and an extended wing plate. The wing plate is fixedly connected to the bottom plate of the first housing 31. The first bearing 4 is interference-fitted with the bearing seat 32 in the first channel 321. The rotating rod 5 is interference-fitted with the inner ring of the first bearing 4 and is spaced apart in the second channel 322 of the bearing seat 32. The bearing seat 32 connects the rotating part 3 and fixes the first bearing 4 on one hand, and also constrains the rotation of the rotating rod 5 on the other hand, preventing the rotating rod 5 from rotating off-axis and causing the fixed structure 6 at the end of the rotating rod 5 to swing the cable to a large extent, interfering with the activity of the experimental animals.

[0049] For example, in this embodiment, the first housing 31 is provided with a wiring port on its side. The wiring port inside the first housing 31 is electrically connected to the interface of the rotor 12, which facilitates wiring.

[0050] In several embodiments of this specification, in conjunction with the appendix Figure 2 The rotor 12 is fixedly connected to the rotating part 3, and the stator 11 is fixedly connected to the fixed part 2;

[0051] The fixed part 2 is provided with a drive motor 7 and a transmission assembly 8 that can drive the drive motor 7 to the rotor 12.

[0052] Explanatoryly, the drive motor 7 can be controlled to rotate via wired communication or wireless communication via a wireless drive module. The rotor 12 and rotating part 3 are driven to rotate via the transmission component 8, thus untangling the cable. This allows the experimenter to operate the cable untangling device without having to approach the device installed in the experimental apparatus, avoiding disturbing the experimental animals.

[0053] Illustratively, the transmission component 8 can be any structure that achieves the transmission effect through gear transmission, chain transmission, belt transmission, coupling, etc.

[0054] Preferably, the transmission assembly 8 includes a first pulley 81 sleeved on the rotor 12, a second pulley 82 sleeved on the drive end of the drive motor 7, and a transmission belt.

[0055] Explanatoryly, belt drives generate lower noise, which can avoid stimulating and disturbing experimental animals; they can also reduce shock and buffer, reduce damage to slip ring 1, and avoid reducing data transmission quality; they also have the advantages of strong center distance adaptability and convenient installation, so as to match motors of different speeds according to the activity characteristics of different experimental animals.

[0056] In this embodiment, the output end of the drive motor 7 is interference-fitted with the shaft hole of the second pulley 82, the first pulley 81 is fixedly connected to the rotor 12 of the slip ring 1 to achieve coaxial rotation, and a connecting structure connected to the rotating part 3 extends below the first pulley 81 to drive the rotating part 3 to rotate.

[0057] In several embodiments of this specification, in conjunction with the appendix Figure 2 The fixing part 2 includes a second housing 21 with an open top and a mounting bracket 22 fixedly disposed inside the second housing 21 and parallel to the bottom of the second housing 21. The stator 11 of the drive motor 7 and the slip ring 1 is disposed on the mounting bracket 22.

[0058] Mounting bracket 22 includes a first mounting hole 221 through which the rotor 12 passes and a second mounting hole 222 through which the drive shaft of the drive motor 7 passes.

[0059] The bottom of the second housing 21 has an opening for the first pulley 81 to extend out of the second housing 21.

[0060] Illustratively, the connecting structure extending below the first pulley 81 passes through the opening of the second housing 21 and is fixedly connected to the top of the first housing 31.

[0061] Explanatoryly, the internal structure of the fixing part 2 is simple, and the mounting bracket 22 provides support for the slip ring 1 and the drive motor 7, saving internal space and making it convenient for experimental personnel to operate and install.

[0062] Specifically, such as Figure 5 As shown, the mounting bracket 22 includes a support portion 223 whose two ends are fixedly connected to the second housing 21, and a first mounting hole 221 is provided in the middle of the support portion 223;

[0063] The mounting bracket 22 also includes an extension 224 disposed in the middle of the support portion 223 and perpendicular to the support portion 223, and a second mounting hole 222 is disposed on the extension 224.

[0064] Explanatoryly, different experimental animals exhibit different activity characteristics, requiring drive motors 7 with varying rotational speeds to achieve different untangling speeds. The support portion 223 and the extension portion 224 form a T-shaped structure, occupying minimal space within the second housing 21 and facilitating operation when replacing motors with different rotational speeds. During replacement, two fingers are inserted from above the mounting bracket 22 through both sides of the extension portion 224 under the mounting bracket 22 to grasp the second pulley 82, disassembling the drive motor 7 and replacing it with a new one. Flexible adjustments can be made according to different experimental animal types and tangling conditions to improve the untangling effect.

[0065] In several embodiments of this specification, such as Figure 6 As shown, the cable untangling device also includes a second bearing 9 coaxially arranged with the rotation shaft of the rotor 12. The two end faces of the inner ring of the second bearing 9 are fixedly connected to the rotating part 3 and the first pulley 81, respectively. The outer ring of the second bearing 9 is fixedly connected to the bottom of the second housing 21, so that the fixed part 2 and the rotating part 3 can be coupled through the second bearing 9.

[0066] Explanatoryly, the second bearing 9 is provided to achieve bearing engagement between the fixed part 2 and the rotating part 3. As a force-bearing structure along the rotational axis of the rotor 12, it prevents the slip ring 1 from being subjected to excessive axial force on the rotor 12 and thus avoids damage to the slip ring 1, ensuring the quality of data transmission.

[0067] Explanatoryly, the outer ring of the second bearing 9 is fixedly connected to the bottom of the second housing 21 and remains fixed with the fixing part 2. The upper end face of the inner ring of the second bearing 9 is fixedly connected to the connecting structure extending below the first pulley 81, and the lower end face of the inner ring of the second bearing 9 is fixedly connected to the top of the first housing 31. When the fixing part 2 and the rotating part 3 rotate relative to each other, the rotor 12 of the slip ring 1 rotates relative to the stator 11. The drive motor 7 drives the rotating part 3 to rotate relative to the fixing part 2 through the transmission assembly 8. The second bearing 9 is a line contact roller bearing with high friction and low speed, which can withstand greater axial load.

[0068] In several embodiments of this specification, the rotational damping of the second bearing 9 is greater than the rotational damping between the rotor 12 and the stator 11 of the slip ring 1.

[0069] Explained, when the cable accumulates to a certain extent on the rotating rod 5, the torsional force of the cable will exceed the rotational damping between the rotor 12 and stator 11 of the slip ring 1, causing the rotor 12 to rotate relative to the stator 11, thus eliminating some of the torsional force of the cable. However, when the slip ring 1 rotates, the principle of the slip ring 1 will inevitably have a certain impact on the data transmission effect. By setting a second bearing 9 with a rotational damping greater than that between the rotor 12 and stator 11 of the slip ring 1, the minimum threshold for the rotor 12 to rotate due to the torsional force of the cable is indirectly increased. This allows the rotating part 3 to accumulate a larger torsional force of the cable, enabling planned unwinding. In a single experiment, for the same winding strength, the number of unwinding operations is reduced and the unwinding interval is increased, thereby improving the quality and continuity of the acquired data segments.

[0070] In several embodiments of this specification, a sensor capable of detecting the rotation of the rotating rod 5 and a controller connected to the sensor are also included. The controller is electrically connected to the drive motor 7 to control the rotation of the drive motor 7 according to the rotation of the rotating rod 5.

[0071] To illustrate, when the sensor detects that the rotating rod 5 has rotated to a preset angle or the torque of the first bearing 4 has reached a preset value, the controller automatically controls the drive motor 7 to work, thereby achieving automated untangling.

[0072] In several embodiments of this specification, the fixing part 2 further includes a top cover 23 that is detachably connected to the top of the second housing 21. The top cover 23 has a mounting plate 231 vertically disposed on its end face, and the top cover 23 has a wire hole and a winding groove 232 connected to the wire hole.

[0073] Explained, the mounting plate 231 facilitates fixed connection to horizontal or vertical bars and grids above the action device or control box, keeping the cable unwinding device vertical. When replacing the drive motor 7, it is not necessary to remove the cable unwinding device from its fixed position; only the second housing 21 needs to be separated from the top cover 23. The winding groove 232 facilitates the winding and fixing of excess cable, preventing interference between the redundant cable above and the slack cable between the lower fixing structure 6 and the slip ring 1.

[0074] Working principle:

[0075] In use, first use screws to fix the device to the behavioral monitoring experimental device through the holes on the mounting plate 231 of the top cover 23, so that the cable untangling device remains vertical.

[0076] Connect the cable untangling device to the terminal on the stator 11 inside the second housing 21 using a cable, and then connect the cable untangling device to the terminal on the first housing 31 using another cable. Leave approximately 10-20 cm of cable between the terminal on the first housing 31 and the alligator clip, and then clamp the cable with the alligator clip.

[0077] During the experiment, the signals from the experimental animals collected by the head-mounted brain imaging device were continuously transmitted to the signal acquisition device through slip ring 1.

[0078] When it is found that the cable is tangled to a certain extent on the rotating rod 5, the drive motor 7 can be manually, wired, or controlled by a wireless remote control to rotate the fixed part 2 and the rotating part 3 relative to each other to untangle the cable.

[0079] Since the cable wrapping only exists between the connector on the first housing 31 and the alligator clip, and not in the cable section directly connected to the experimental animal, it will not affect the activity of the experimental animal, or will greatly reduce the impact on the activity of the experimental animal.

[0080] The cable untangling device provided in this manual has a small and compact structure, making it easy to apply in various experimental scenarios.

[0081] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A cable untangling device for an animal head-mounted brain imaging device, comprising: The slip ring (1) comprises a rotatingly connected stator (11) and rotor (12), and the stator (11) and the rotor (12) are fixedly connected with the fixed part (2) and the rotating part (3) respectively; The rotating part (3) is provided with a first bearing (4) coaxially arranged with the rotating shaft of the rotor (12) in the axial direction and a rotating rod (5) bearing matched with the first bearing (4), and the rotating rod (5) is provided with a fixing structure (6) capable of fixing a cable at one end away from the rotating part (3); The rotating damping of the first bearing (4) is smaller than the rotating damping between the rotor (12) and the stator (11).

2. The cable untangling device for a head-mounted brain imaging device for animals of claim 1, wherein, The rotating part (3) comprises a first housing (31), the top of the first housing (31) is fixedly connected with the rotor (12), and the bottom of the first housing (31) is provided with a bearing seat (32), the bearing seat (32) is centrally formed with a first channel (321) coaxially arranged with the rotating shaft of the rotor (12) and relatively close to the rotating part (3) and a second channel (322) relatively far away from the rotating part (3), the diameter of the first channel (321) is greater than that of the second channel (322), the first bearing (4) is arranged in the first channel (321) and is interference fitted with the bearing seat (32), and the rotating rod (5) is arranged in the second channel (322) with a gap.

3. The cable untangling device for a head-mounted brain imaging device for animals of claim 1, wherein, The rotor (12) is fixedly connected with the rotating part (3), and the stator (11) is fixedly connected with the fixed part (2); The fixed part (2) is provided with a driving motor (7) and a transmission assembly (8) capable of drivingly connecting the driving motor (7) with the rotor (12).

4. The cable untangling device for a head-mounted brain imaging apparatus for animals according to claim 3, wherein The transmission assembly (8) comprises a first pulley (81) sleeved on the rotor (12), a second pulley (82) sleeved on the driving end of the driving motor (7) and a transmission belt.

5. The cable untangling device for a head-mounted brain imaging apparatus for animals of claim 4, wherein The fixed part (2) comprises a second housing (21) with an open top and a mounting bracket (22) fixedly arranged inside the second housing (21) and parallel to the bottom of the second housing (21), and the driving motor (7) and the stator (11) of the slip ring (1) are arranged on the mounting bracket (22); The mounting bracket (22) comprises a first mounting hole (221) for the rotor (12) to pass through and a second mounting hole (222) for the driving shaft of the driving motor (7) to pass through; An opening is formed in the bottom of the second housing (21) for the first pulley (81) to extend out of the second housing (21).

6. The cable untangling device for a head-mounted brain imaging apparatus for animals of claim 5, wherein The mounting bracket (22) comprises a support portion (223) fixedly connected with the second housing (21) at both ends, and the first mounting hole (221) is arranged at the middle portion of the support portion (223); The mounting bracket (22) further comprises an extension portion (224) arranged at the middle portion of the support portion (223) and perpendicular to the support portion (223), and the second mounting hole (222) is arranged on the extension portion (224).

7. The cable untangling device for a head-mounted brain imaging device for animals of claim 5, wherein, The second bearing (9) is coaxially arranged with the rotating shaft of the rotor (12), the inner ring of the second bearing (9) is fixedly connected with the rotating part (3) and the first belt pulley (81) respectively, and the outer ring of the second bearing (9) is fixedly connected with the bottom of the second shell (21), so that the fixed part (2) and the rotating part (3) can be bearing-connected through the second bearing (9).

8. The cable untangling device for a head-mounted brain imaging device for animals of claim 7, wherein, The rotating damping of the second bearing (9) is greater than the rotating damping between the rotor (12) and the stator (11) of the slip ring (1).

9. A cable untangling device for a head-mounted brain imaging apparatus for an animal according to any one of claims 3-8, wherein The sensor can detect the rotating condition of the rotating rod (5), and the controller is connected with the sensor, and the controller is electrically connected with the driving motor (7) to control the rotation of the driving motor (7) according to the rotating condition of the rotating rod (5).

10. A cable untangling device for a head-mounted brain imaging apparatus for an animal according to any one of claims 5-8, wherein The fixed part (2) further comprises a top cover (23) which is detachably connected with the top of the second shell (21), the end surface of the top cover (23) is vertically provided with a mounting plate (231), and the top cover (23) is provided with a wire hole and a winding groove (232) which is communicated with the wire hole.

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