C-shaped arm hidden cable arrangement structure for medical X-ray machine

Abstract

The utility model discloses a C-shaped arm hidden type cable arrangement structure used for a medical X-ray machine. The C-shaped arm hidden type cable arrangement structure comprises a C-shaped arm, a cable and a cable, the C-shaped arm is connected to the inclined extending arm body in a sliding manner and can rotate relative to the inclined extending arm body; the synchronous wheel transmission assembly comprises a synchronous wheel and a synchronous belt, and the synchronous wheel is rotatably supported on the inclined extending arm body; the two ends of the synchronous belt are fixedly connected with the two ends of the C-shaped arm respectively and are tensioned, and the synchronous belt penetrates through the synchronous wheel; the cable winding and unwinding assembly comprises a cable and a cable winding roller, and the cable winding roller is rotatably supported on the inclined extending arm body; one end of the cable is wound on the cable winding roller, and the other end of the cable is arranged in the C-shaped arm in a penetrating manner, extends to the tail end of the C-shaped arm and is fixed; the cable winding roller is in transmission connection with the synchronous wheel, when the C-shaped arm is manually driven to slide and rotate, the synchronous belt drives the synchronous wheel to move synchronously, the synchronous wheel drives the cable winding roller to rotate, and therefore the cable is driven to be wound and unwound.

Description

Technical Field

[0001] The utility model relates to an instrument for radiological diagnosis, in particular to a C-shaped arm hidden cable arrangement structure for a medical X-ray machine. Background Art

[0002] The medical X-ray C-arm is an important medical imaging device, which is widely used in surgical operations, especially in orthopedic and interventional surgeries. With the advancement of technology, the design and function of C-arms are constantly improving, but there are still some challenges, especially the cable management of small C-arms in manual mode.

[0003] With the continuous advancement of technology, C-arms have evolved from traditional large devices to more lightweight and easy-to-operate small models. These small C-arms have been widely used in clinical practice due to their portability and flexibility.

[0004] Although small C-arms bring convenience, cable management becomes a problem in actual clinical use. Cables can easily enter the sterile area of ​​the C-arm and contaminate patients, and are difficult to keep clean, which to a certain extent affects the overall performance of the equipment and the hygiene of the operating room. In addition, improper cable management may also affect the full balance and operability of the equipment. A fully balanced C-arm means that the C-arm can remain stable at different operating angles and positions, and will not move or tilt due to gravity or other external forces.

[0005] At present, some medium-sized C-arm machines have introduced solutions to hide the cables and use full-time electric drive to eliminate the effect of the single-acting force of the automatic cable retraction on the C-arm machine through motor control, thereby maintaining the balance of the C-arm machine. However, this comes at the cost of a significant increase in the size of the equipment. For small C-arm machines, it is difficult to adopt the same solution due to the size of the equipment.

[0006] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the utility model, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to ordinary technicians in this field. Utility Model Content

[0007] Purpose of the utility model: The technical problem to be solved by the utility model is to provide a C-arm hidden cable arrangement structure for a medical X-ray machine in view of the deficiencies in the prior art, which can hide the cables to avoid contamination of patients and keep the cables clean, while maintaining full balance when the C-arm is manually slid.

[0008] In order to solve the above technical problems, the utility model discloses a C-shaped arm hidden cable arrangement structure for a medical X-ray machine, the C-shaped arm hidden cable arrangement structure comprising:

[0009] C-arm;

[0010] An oblique arm body, the C-shaped arm is slidably connected to the oblique arm body and can rotate relative to the oblique arm body;

[0011] A synchronous wheel transmission assembly, the synchronous wheel transmission assembly includes a synchronous wheel and a synchronous belt, the synchronous wheel is rotatably supported on the oblique extension arm body; the two ends of the synchronous belt are respectively fixedly connected and tensioned with the two ends of the C-shaped arm, and the synchronous belt passes through the synchronous wheel in the synchronous wheel transmission assembly.

[0012] A cable retracting assembly, the cable retracting assembly comprises a cable and a cable winding roller, the cable winding roller is rotatably supported on the oblique extension arm body. One end of the cable is wound on the cable winding roller, and the other end is passed through the C-shaped arm and extends to the end of the C-shaped arm and is fixed.

[0013] The cable winding roller is transmission-connected to the synchronous wheel, so that when the C-arm is manually driven to slide, the synchronous belt drives the synchronous wheel to move synchronously, and the synchronous wheel drives the cable winding roller to rotate, thereby driving the cable to be retracted and released.

[0014] Specifically, the synchronous wheel transmission assembly includes a transmission sprocket A, which is coaxially connected to the synchronous wheel. The cable retracting assembly includes a cable sprocket, a cable transmission chain and a chain tensioner, and the cable sprocket is coaxially fixedly connected to the cable winding roller. The transmission sprocket A is transmission-connected to the cable sprocket through the cable transmission chain. The path of the cable transmission chain passes through the chain tensioner, and the chain tensioner is used to keep the cable transmission chain in a tensioned state.

[0015] Specifically, the C-shaped arm hidden cable arrangement structure includes a cable guide wheel, which is rotatably supported on the oblique arm body, and the cable guide wheel is used to guide the cable into the C-shaped arm.

[0016] Specifically, the C-shaped arm hidden cable arrangement structure includes a cable tensioner and a tensioning spring, wherein the cable tensioner is used to keep the cable tensioned when the C-shaped arm slides to drive the cable to be retracted or released. The cable tensioner is rotatably connected to the oblique arm body, and one end of the cable tensioner away from the oblique arm body is in contact with and connected to the cable. One end of the tensioning spring is fixedly connected to the oblique arm body, and the other end is connected to the cable tensioner and drives the cable tensioner to press the cable toward the direction close to the C-shaped arm.

[0017] Specifically, the C-shaped arm hidden cable arrangement structure includes a pair of synchronous belt guide wheels, both of which are rotatably supported on the oblique arm body. The two ends of the synchronous belt passing through the synchronous wheels respectively pass through one of the pair of synchronous belt guide wheels and then extend to the two ends of the C-shaped arm.

[0018] Specifically, the oblique arm assembly includes a cable guide wheel bracket and a synchronous belt guide wheel bracket, and the cable guide wheel bracket and the synchronous belt guide wheel bracket are respectively fixedly connected to the oblique arm body. The cable guide wheel is rotatably connected to the cable guide wheel bracket to achieve that the cable guide wheel is rotatably supported on the oblique arm body. Both of the synchronous belt guide wheels are rotatably supported on the synchronous belt guide wheel bracket, and the synchronous belt guide wheel bracket is fixedly connected to the oblique arm body.

[0019] Specifically, the cable retracting assembly includes a cable left limit plate, a cable right limit plate, a cable spindle, a bearing, a spindle fixing plate and a spindle fixing plate bracket. Along the axial direction of the cable winding roller, the cable left limit plate and the cable right limit plate are respectively fixed to the two ends of the cable winding roller. A cable spindle is coaxially penetrated through the inner side of the cable winding roller, and both ends of the cable spindle extend out of the cable winding roller and the extended ends are respectively connected to the spindle fixing plates, and the spindle fixing plates are fixedly connected to the spindle fixing plate bracket. The cable left limit plate and the cable right limit plate are both supported on the cable spindle through bearings. The cable sprocket is arranged between the cable left limit plate and the spindle fixing plate bracket and is coaxially fixedly installed on the cable spindle, so as to realize the coaxial fixed connection between the cable sprocket and the cable winding roller. The spindle fixing plate bracket is fixedly connected to the oblique extension arm body.

[0020] Specifically, the C-arm hidden cable arrangement structure includes a rolling bearing group, a C-arm handle, a C-arm tube end counterweight and a C-arm flat end counterweight, wherein the rolling bearing group is mounted on the oblique arm body, and the C-arm is connected to the oblique arm body through the rolling bearing group. The C-arm handle is fixedly connected to the C-arm. The C-arm tube end counterweight and the C-arm flat end counterweight are respectively connected to the two ends of the C-arm.

[0021] Furthermore, the C-arm hidden cable arrangement structure also includes a motor drive assembly, and the motor drive assembly is configured to drive the synchronous wheel to rotate in a clutchable manner.

[0022] Specifically, the motor drive assembly includes a drive assembly bracket, a motor mounting plate, a DC motor, a spindle bearing, an electromagnetic clutch, a clutch spindle, an output sprocket and a sprocket fixing plate. The drive assembly bracket is fixedly connected to the oblique extension arm body. The clutch spindle is rotatably mounted on the drive assembly bracket through a spindle bearing. The output shaft of the DC motor is connected to the clutch spindle, and the DC motor is fixedly mounted on the drive assembly bracket through a motor mounting plate. The output sprocket is fixedly sleeved on the sprocket fixing plate. The sprocket fixing plate is rotatably sleeved on the clutch spindle, and the output sprocket is fixedly sleeved on the sprocket fixing plate and is coaxially arranged with the clutch spindle. The sprocket fixing plate is connected to the clutch spindle through the electromagnetic clutch. The synchronous wheel transmission assembly includes a transmission sprocket B and a synchronous wheel transmission sprocket, and the transmission sprocket B is coaxially connected with the synchronous wheel. The output sprocket is transmission-connected to the transmission sprocket B through the synchronous wheel transmission sprocket.

[0023] Beneficial effects:

[0024] 1) The C-arm hidden cable arrangement structure for a medical X-ray machine disclosed in the present application can hide the cables, avoid contaminating the patient and keep the cables clean, while maintaining full balance when manually sliding the C-arm.

[0025] 2) The C-arm hidden cable arrangement structure for a medical X-ray machine disclosed in the present application has a compact structure and high working efficiency.

[0026] 3) An embodiment of the present application uses a motor drive assembly with an electromagnetic clutch to drive the synchronous wheel to rotate in a clutch manner, and by controlling the engagement and disengagement of the electromagnetic clutch, switching between manual sliding and electric sliding C-arm modes is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods, and the above and / or other advantages of the present invention will become more clear.

[0028] Figure 1 The utility model discloses a structural schematic diagram of a C-arm assembly in a C-arm hidden cable arrangement structure for a medical X-ray machine.

[0029] Figure 2 The utility model discloses a schematic structural diagram of an oblique arm assembly in a C-arm hidden cable arrangement structure for a medical X-ray machine.

[0030] Figure 3 The utility model discloses a main cross-sectional schematic diagram of a synchronous wheel transmission assembly in a C-arm hidden cable arrangement structure for a medical X-ray machine.

[0031] Figure 4 The utility model discloses a main cross-sectional schematic diagram of a cable retracting and releasing assembly in a C-shaped arm hidden cable arrangement structure for a medical X-ray machine.

[0032] Figure 5 The utility model discloses a side view schematic diagram of a cable retracting assembly in a C-shaped arm hidden cable arrangement structure for a medical X-ray machine.

[0033] Figure 6 The utility model discloses a main cross-sectional schematic diagram of a motor drive assembly in a C-arm hidden cable arrangement structure for a medical X-ray machine.

[0034] Figure 7 The utility model discloses a structural schematic diagram of a C-shaped arm hidden cable arrangement structure for a medical X-ray machine when the C-shaped arm slides -30 degrees.

[0035] Figure 8 The utility model discloses a structural schematic diagram of a C-shaped arm hidden cable arrangement structure for a medical X-ray machine when the C-shaped arm slides 90 degrees.

[0036] Fig. 9 for Figure 7 A partial front view of the C-arm hidden cable arrangement structure is shown.

[0037] Fig.10 for Fig. 9 A partial rear view of the C-arm hidden cable arrangement structure is shown.

[0038] Fig.11 It is the curve of the cable elongation length changing with the rotation angle of the cable around the roller.

[0039] The description of the accompanying drawings is:

[0040] 100, C-arm assembly; 200, oblique arm assembly; 300, synchronous wheel transmission assembly; 400, cable retracting assembly; 500, motor drive assembly; 1, C-arm; 2, C-arm handle; 3, C-arm tube end counterweight; 4, C-arm flat end counterweight; 5, oblique arm body; 6, rolling bearing group; 7, cable guide wheel; 8, cable guide wheel bracket; 9, synchronous belt guide wheel bracket; 10, synchronous belt guide wheel; 11, cable tensioner; 12, tensioning spring; 13, synchronous wheel bracket; 14, synchronous wheel bearing; 15, synchronous wheel spindle; 16, transmission sprocket A; 17, transmission sprocket B; 18, chain Wheel extension shaft; 19, synchronous belt; 20, synchronous wheel; 21, cable winding roller; 22, cable left limit plate; 23, cable right limit plate; 24, cable spindle; 25, left bearing; 26, right bearing; 27, spindle fixing plate; 28, cable clamping plate; 29, spindle fixing plate bracket; 30, cable sprocket; 31, cable drive chain; 32, chain tensioner; 33, drive assembly bracket; 34, motor mounting plate; 35, DC motor; 36, clutch spindle; 37, spindle bearing; 38, electromagnetic clutch; 39, output sprocket; 40, sprocket fixing plate; 41, synchronous wheel drive sprocket; 42, cable. DETAILED DESCRIPTION

[0041] At present, medium-sized C-arm machines have introduced solutions to hide cables, but small C-arm machines still cannot overcome this problem. The difficulty that small C-arm machines need to overcome is that the single-acting force of the automatic cable retraction in manual mode of small C-arm machines cannot eliminate the impact on the full balance of the C-arm, making it impossible for small C-arm machines to maintain full balance. Medium-sized C-arm machines can maintain the balance of the C-arm machine through the control of the motor because they use full-time electric drive, but the cost is a significant increase in the size of the equipment.

[0042] Example 1

[0043] See also Figures 1 to 10 This embodiment 1 discloses a C-arm hidden cable arrangement structure for a medical X-ray machine, which is suitable for a small C-arm machine with a manually sliding C-arm. It can hide the cables at the end of the C-arm, avoiding the disadvantages of contamination of patients and cables and difficulty in cleaning the cables due to the cables entering the sterile area of ​​the C-arm during clinical use.

[0044] See also Fig. 9 and Fig.10 The C-shaped arm hidden cable arrangement structure includes a C-shaped arm assembly 100, an oblique arm assembly 200, a synchronous wheel transmission assembly 300 and a cable retracting assembly 400.

[0045] See also Figure 1The C-arm assembly 100 includes a C-arm 1, a C-arm handle 2, a C-arm tube end counterweight 3, and a C-arm flat end counterweight 4. The C-arm handle 2 is fixedly connected to the C-arm 1. The C-arm tube end counterweight 3 and the C-arm flat end counterweight 4 are respectively connected to both ends of the C-arm 1.

[0046] See also Figure 2 , the oblique arm assembly 200 includes an oblique arm body 5. Fig. 9 and Fig.10 The C-shaped arm 1 is slidably connected to the oblique arm body 5 and can rotate relative to the oblique arm body 5.

[0047] See also Figure 3 The synchronous wheel transmission assembly 300 includes a synchronous wheel 20 and a synchronous belt 19. Fig. 9 The synchronous wheel 20 is rotatably supported on the oblique extension arm body 5. Fig.10 The two ends of the synchronous belt 19 are respectively fixedly connected to the two ends of the C-shaped arm 1 and tensioned, and the synchronous belt 19 passes through the synchronous wheel 20 in the synchronous wheel transmission assembly 300.

[0048] See also Figure 4 The cable retracting assembly 400 includes a cable 42 and a cable winding roller 21. Fig.10 The cable winding roller 21 is rotatably supported on the oblique extension arm body 5. One end of the cable 42 is wound on the cable winding roller 21, and the other end is passed through the C-shaped arm 1 and extends to the end of the C-shaped arm 1 and is fixed.

[0049] See also Fig. 9 The cable winding roller 21 is connected to the synchronous wheel 20 in a transmission manner. When the C-arm 1 is manually driven to slide, the synchronous belt 19 drives the synchronous wheel 20 to move synchronously, and the synchronous wheel 20 drives the cable winding roller 21 to rotate, thereby driving the cable 42 to be retracted and released.

[0050] For details, see Figure 3 The synchronous wheel transmission assembly 300 includes a transmission sprocket A 16, and the transmission sprocket A 16 is coaxially connected to the synchronous wheel 20. Figure 4 The cable retracting assembly 400 includes a cable sprocket 30, a cable transmission chain 31 and a chain tensioner 32. The cable sprocket 30 is coaxially fixedly connected to the cable winding roller 21. Fig. 9 The transmission sprocket wheel A 16 is connected to the cable sprocket wheel 30 through the cable transmission chain 31. The path of the cable transmission chain 31 passes through the chain tensioner 32, and the chain tensioner 32 is used to keep the cable transmission chain 31 in a tensioned state.

[0051] For details, see Figure 2 The oblique arm assembly 200 includes a cable guide wheel 7, and the cable guide wheel 7 is rotatably supported on the oblique arm body 5. Fig.10The cable guide wheel 7 is used to guide the cable 42 into the C-arm 1.

[0052] Specifically, see Figure 2 The tilt arm assembly 200 includes a cable tensioner 11 and a tension spring 12. Fig. 9 The cable tensioner 11 is used to keep the cable 42 taut when the C-shaped arm 1 slides to drive the cable 42 to be retracted or extended. Fig. 9 The cable tensioner 11 is rotatably connected to the oblique arm body 5, and a roller is provided at one end of the cable tensioner 11 away from the oblique arm body 5, and the roller is in contact with the cable 42; one end of the tensioning spring 12 is fixedly connected to the oblique arm body 5, and the other end is connected to the cable tensioner 11 and drives the cable tensioner 11 to press the cable 42 toward the direction close to the C-shaped arm 1.

[0053] For details, see Figure 2 The oblique arm assembly 200 includes a pair of synchronous belt guide wheels 10, and the synchronous belt guide wheels 10 are rotatably supported on the oblique arm body 5. Fig.10 The two ends of the synchronous belt 19 passing through the synchronous wheel 20 respectively pass through one of a pair of synchronous belt guide wheels 10 and then extend to the two ends of the C-shaped arm 1.

[0054] For details, see Figure 2 The oblique extension arm assembly 200 includes a cable guide wheel bracket 8 and a synchronous belt guide wheel bracket 9. Figure 2 The cable guide wheel bracket 8 and the synchronous belt guide wheel bracket 9 are respectively fixedly connected to the oblique arm body 5. The cable guide wheel 7 is rotatably connected to the cable guide wheel bracket 8, so that the cable guide wheel 7 can be rotatably supported on the oblique arm body 5. Two synchronous belt guide wheels 10 are rotatably supported on the synchronous belt guide wheel bracket 9, and the synchronous belt guide wheel bracket 9 is fixedly connected to the oblique arm body 5.

[0055] For details, see Figure 4 The cable retracting assembly 400 includes a cable left limit plate 22, a cable right limit plate 23, a cable spindle 24, a bearing, a spindle fixing plate 27 and a spindle fixing plate bracket 29. Along the axial direction of the cable winding roller 21, the cable left limit plate 22 and the cable right limit plate 23 are respectively fixed to the two ends of the cable winding roller 21. A cable spindle 24 is coaxially penetrated through the inner side of the cable winding roller 21, and both ends of the cable spindle 24 extend out of the cable winding roller 21 and the extended ends are respectively connected to the spindle fixing plates 27, and the spindle fixing plates 27 are fixedly connected to the spindle fixing plate bracket 29. The cable left limit plate 22 and the cable right limit plate 23 are both supported on the cable spindle 24 through bearings. The cable sprocket 30 is disposed between the cable left limit plate 22 and the spindle fixing plate bracket 29 and is coaxially fixedly installed on the cable spindle 24, so as to realize the coaxial fixed connection between the cable sprocket 30 and the cable winding roller 21. See. Fig. 9The spindle fixing plate bracket 29 is fixedly connected to the oblique extension arm body 5 .

[0056] For details, see Figure 4 The cable retracting assembly 400 includes a cable clamping plate 28 , and one end of the cable 42 is fixedly mounted on the cable winding roller 21 through the cable clamping plate 28 and then wound on the cable winding roller 21 .

[0057] For more details, see Figure 4 The oblique arm assembly 200 includes a rolling bearing group 6, which is installed on the oblique arm body 5. The C-shaped arm 1 is connected to the oblique arm body 5 through the rolling bearing group 6 to achieve a sliding connection between the C-shaped arm 1 and the oblique arm body 5 and to be able to rotate relative to the oblique arm body 5.

[0058] Specifically, see Figure 3 The synchronous wheel transmission assembly 300 includes a synchronous wheel bracket 13, a synchronous wheel bearing 14, a synchronous wheel spindle 15 and a sprocket extension shaft 18. The synchronous wheel spindle 15 is fixedly inserted into the inner side of the synchronous wheel 20 and both ends extend beyond the synchronous wheel 20. Both ends of the synchronous wheel spindle 15 extending beyond the synchronous wheel 20 are supported on the synchronous wheel bracket 13 through the synchronous wheel bearing 14. One end of the synchronous wheel spindle 15 extending beyond the synchronous wheel 20 is connected to the sprocket extension shaft 18, and the transmission sprocket B 17 is coaxially fixed to the sprocket extension shaft 18. The other end of the synchronous wheel spindle 15 extending beyond the synchronous wheel 20 is connected to the transmission sprocket A 16. See FIG. Fig. 9 The synchronous wheel transmission assembly 300 is fixedly connected to the oblique extension arm body 5 through the synchronous wheel bracket 13.

[0059] Example 2

[0060] On the basis of Example 1, the C-arm hidden cable arrangement structure disclosed in Example 2 further includes a motor drive assembly 500, which is configured to drive the synchronous wheel 20 to rotate in a clutchable manner to achieve switching between manual sliding and electric sliding C-arms.

[0061] For details, see Figure 6The motor drive assembly 500 includes a drive assembly bracket 33, a motor mounting plate 34, a DC motor 35, a spindle bearing 37, an electromagnetic clutch 38, a clutch spindle 36, an output sprocket 39 and a sprocket fixing plate 40. The clutch spindle 36 is rotatably mounted on the drive assembly bracket 33 through the spindle bearing 37. The output shaft of the DC motor 35 is connected to the clutch spindle 36, and the DC motor 35 is fixedly mounted on the drive assembly bracket 33 through the motor mounting plate 34. The output sprocket 39 is fixedly sleeved on the sprocket fixing plate 40. The sprocket fixing plate 40 is rotatably sleeved on the clutch spindle 36, and the output sprocket 39 is fixedly sleeved on the sprocket fixing plate 40 and is coaxially arranged with the clutch spindle 36. The sprocket fixing plate 40 is connected to the clutch spindle 36 through the electromagnetic clutch 38. See FIG. Figure 3 The synchronous wheel transmission assembly 300 includes a transmission sprocket B 17 and a synchronous wheel transmission sprocket 41, and the transmission sprocket B 17 is coaxially connected to the synchronous wheel 20. Fig. 9 The output sprocket 39 is connected to the transmission sprocket B 17 through the synchronous wheel transmission sprocket 41. Fig. 9 The driving assembly bracket 33 is fixedly connected to the oblique extension arm body 5 .

[0062] For more details, see Figure 6 The bearings include a left bearing 25 and a right bearing 26 . The left cable limit plate 22 is rotatably mounted on the cable spindle 24 through the left bearing 25 , and the right cable limit plate 23 is rotatably mounted on the cable spindle 24 through the right bearing 26 .

[0063] It should be understood that the axes of the synchronous wheel spindle 5, the cable winding roller 21, and the DC motor 35 are parallel to each other. Optionally, the axes of the synchronous wheel spindle 5, the cable winding roller 21, and the DC motor 35 are all perpendicular to the oblique extension arm body 5.

[0064] When the electromagnetic clutch 38 is disengaged, the C-arm 1 is manually slid, the synchronous belt 19 drives the synchronous wheel 20 to rotate, the synchronous wheel 20 drives the cable sprocket 30 on the cable retracting assembly 400 to rotate, and the rotation of the cable sprocket 30 drives the cable 42 to be retracted and released.

[0065] When the electromagnetic clutch 38 is engaged, the DC motor 35 in the motor drive assembly 500 is started, and the DC motor 35 drives the clutch spindle 36 to rotate in the first or second direction to drive the synchronous wheel 20 to rotate, and the synchronous wheel 20 rotates to drive the synchronous belt 19, so that the entire C-shaped arm 1 slides along the slide rail. At the same time, the synchronous wheel 20 rotates to drive the cable sprocket 30 to rotate, and the cable sprocket 30 rotates to drive the cable 42 to be retracted and released.

[0066] Below, combined with the attached Figures 1 to 9 , the installation process of the C-arm hidden cable arrangement structure disclosed in Example 2 is described.

[0067] During installation, first install the C-arm assembly 100, the C-arm assembly 100, the oblique extension arm assembly 200, the synchronous wheel transmission assembly 300, the cable retracting assembly 400 and the motor drive assembly 500 in sequence, and then assemble the C-arm hidden cable arrangement structure disclosed in this embodiment.

[0068] Reference Figure 2 The oblique arm body 5, the rolling bearing group 6, the cable guide wheel 7, the cable guide wheel bracket 8, the synchronous belt guide wheel bracket 9, the synchronous belt guide wheel 10, the cable tensioner 11, and the tensioning spring 12 are installed using screws to form the oblique arm assembly 200.

[0069] Reference Figure 3 , install the synchronous wheel bearing 14 on the synchronous wheel bracket 13, put on the synchronous wheel spindle 15 and the synchronous wheel 20, and finally install the transmission sprocket A 16, the transmission sprocket B 17, and the sprocket extension shaft 18 to the left and right according to the figure. Thus, the synchronous wheel transmission assembly 300 is assembled.

[0070] Reference Figure 4 and Figure 5 , assemble the cable winding roller 21, the cable left limit plate 22, and the cable right limit plate 23 with screws, install the cable mandrel 24, the left bearing 25, and the right bearing 26 into the position shown in the figure, and then install the mandrel fixing plate 27, the cable sprocket 30 and the mandrel fixing plate bracket 29 to the outermost layer, use the cable clamping plate 28 to fix one end of the cable to the cable mandrel 24, and then store all the cables on the cable winding roller 21, thereby completing the installation of the cable retracting assembly 400.

[0071] Finally, refer to Figure 6 , install the clutch spindle 36 and spindle bearing 37 on the drive assembly bracket 33. Connect the motor mounting plate 34 and the DC motor 35 on one side of the drive assembly bracket 33, and install the electromagnetic clutch 38, the output sprocket 39, and the sprocket fixing plate 40 on the other side of the drive assembly bracket 33. Thus, the motor drive assembly 500 is installed.

[0072] Reference Fig. 9 and Fig.10, install the synchronous wheel transmission assembly 300 on the oblique arm assembly 200 through the synchronous wheel bracket 13, fix the cable retracting assembly 400 on the oblique arm assembly 200 through the spindle fixing plate bracket 29, pass the synchronous belt 19 through the synchronous wheel 20 and the synchronous belt guide wheel 10, install the C-arm assembly 100 along the rolling bearing group 6, connect the two ends of the synchronous belt 19 with the C-arm ball tube end counterweight 3 and the C-arm flat plate end counterweight 4, ensure that the C-arm slides manually to make the synchronous wheel 19 rotate accordingly, connect the transmission sprocket wheel A 16 and the cable sprocket wheel 30 through the cable transmission chain 31, and ensure the appropriate tension of the chain through the chain tensioner 32, pass the stored cable along the cable guide wheel 7 and connect it to the C-arm ball tube end counterweight 3, then manually slide the C-arm, and the cable retracting assembly 400 rotates synchronously with the sliding of the C-arm, and the cable is retracted and released in coordination. The appropriate tension of the cable is ensured by adjusting the position of the tensioning spring 12, and the cable is completely hidden at this time. The motor drive assembly 500 is installed on the oblique arm assembly 200 through the drive assembly bracket 33, and the rotation of the motor is transmitted to the transmission sprocket B 17 through the chain. At this time, the electric sliding of the C-shaped arm can be achieved through electric drive, and then the chain transmission can be disconnected through the action of the electromagnetic clutch to switch to the manual sliding mode.

[0073] The theoretical calculations involved are as follows:

[0074] The total sliding angle of the C-arm is set to 120 degrees, the initial angle is -30 degrees, and the end angle is 90 degrees. The initial angle refers to the angle between the end of the C-arm with the C-arm tube end counterweight 3 and the vertical axis when the oblique arm assembly 200 is close to the end of the C-arm with the C-arm tube end counterweight 3. The end angle refers to the angle between the end of the C-arm with the C-arm tube end counterweight 3 and the vertical axis when the oblique arm assembly 200 is close to the end of the C-arm with the C-arm flat end counterweight 4. The C-arm usually needs to hover at -30 degrees, 0 degrees, 30 degrees, 60 degrees and 90 degrees, corresponding to the C-arm sliding angles: 0 degrees, 30 degrees, 60 degrees, 90 degrees and 120 degrees.

[0075] Assuming that the initial cable extension length is L0 and the final cable extension length is L4, the three-dimensional software simulation shows that the extension length of the cable 42 changes evenly during the sliding process, and the cable extension lengths corresponding to the C-arm sliding angles of 30 degrees, 60 degrees, 90 degrees and 120 degrees are obtained: L1, L2, L3 and L4.

[0076] The total sliding angle of the C-arm is 120 degrees, and the travel distance u of the synchronous belt 19 is calculated by referring to the following formula:

[0077] Where R is the radius of the synchronous belt in the inner groove of the C-arm

[0078] Look up the pitch circle of the synchronous wheel 20 and obtain the pitch circle d1;

[0079] According to the pitch circle d1, the rotation angle of the synchronous wheel 20 is obtained as θ1 by referring to the following formula:

[0080]

[0081] By setting a suitable transmission ratio, the tooth ratio M between the 16-axis transmission sprocket A 16 and the cable sprocket 30 coaxial with the synchronous wheel 20 is designed, and the rotation angle θ2 of the cable winding roller 21 is obtained by referring to the following formula:

[0082] θ2=θ1×M;

[0083] Assume that the diameter of the cable on the cable winding roller 21 is d2, the outer diameter of the winding roller is d3, and the number of windings of the roller is n. At this time, the cable forms a spiral line on the winding roller.

[0084] Draw the spiral line directly in the CAD software, and use the measuring tool to measure the corresponding cable elongation lengths of the cable winding roller when the C-arm sliding angles are 30 degrees, 60 degrees, 90 degrees and 120 degrees: L5, L6, L7, L8.

[0085] Compare this with the cable length changes corresponding to L1, L2, L3, and L4, see Fig.11 . Fig.11 The horizontal axis is θ2, and the vertical axis X is the cable extension length.

[0086] pass Fig.11 It can be seen that by adjusting the gear ratio M to obtain appropriate values ​​of L5, L6, L7, and L8, it is required that the corresponding values ​​are L5 ≥ L1, L6 ≥ L2, L7 ≥ L3, and L8 ≥ L4 to avoid the flat cable roller from getting stuck.

[0087] Below, refer to Figures 8 to 9 , the usage methods of the C-shaped arm hidden cable arrangement structure of the utility model shown in Example 2 in the manual sliding C-shaped arm and the electric sliding C-shaped arm are described respectively.

[0088] The C-arm assembly 100 can slide along the track on the oblique arm assembly 200 . The two ends of the synchronous belt 19 are respectively fixedly connected and tensioned with the two ends of the C-arm 1 , and the synchronous belt 19 passes through the synchronous wheel 20 in the synchronous wheel transmission assembly 300 .

[0089] When the electromagnetic clutch 38 is disengaged and the C-arm 1 is manually slid, the synchronous belt 19 drives the synchronous wheel 20 to rotate, thereby driving the transmission sprocket A 16 in the synchronous wheel transmission assembly 300 to rotate, and the transmission sprocket A 16 drives the cable sprocket 30 on the cable retracting assembly 400 to rotate through the cable transmission chain 31, thereby driving the cable retracting assembly 400 to rotate as a whole to realize automatic retraction and release of the cable 42.

[0090] In this way, the movement of the entire C-arm 1 can be driven manually.

[0091] Since the end of the cable 42 is connected to the end of the C-arm assembly 100, when the C-arm 1 is rotated, the cable retracting assembly 400 also rotates to cooperate in releasing the cable when the cable 42 is pulled out, and when the reverse rotation is performed, the cable retracting assembly 400 also rotates to cooperate in retracting the cable. The cable follow-up retraction can be completed according to the calculated transmission ratio. Since the radius changes to a certain extent when the cable is wound, but the transmission ratio is constant, there is a state in which the cable cannot be fully recovered during the retraction process. Adding a cable tensioner 11 at the recovery end of the cable can compensate for the excess length. At this time, the cable is automatically recovered from the oblique arm assembly 200 in the manual state, and the cable is completely hidden.

[0092] When the electromagnetic clutch 38 is engaged and the DC motor 35 in the motor drive assembly 500 is started, the DC motor 35 drives the clutch spindle 36 to rotate in the first or second direction, and the output sprocket 39 rotates synchronously with the clutch spindle 36. The output sprocket 39 drives the transmission sprocket B 17 in the synchronous wheel transmission assembly 300 to rotate through the synchronous wheel transmission sprocket 41, and the transmission sprocket A 16 and the synchronous wheel spindle 15 rotate synchronously with the transmission sprocket B 17. The rotation of the synchronous wheel spindle 15 drives the synchronous belt 19, so that the entire C-shaped arm 1 slides along the slide rail. While the C-shaped arm 1 slides, the transmission sprocket A 16 drives the cable sprocket 30 on the cable retracting assembly 400 to rotate through 31, thereby driving the cable retracting assembly 400 to rotate as a whole to realize the automatic retraction and release of the cable 42.

[0093] Thus, the entire C-shaped arm 1 is electrically driven to move. Since the load mass of the entire C-shaped arm 1 is fully balanced, only a very small motor is needed to complete the drive.

[0094] The utility model adds an electromagnetic clutch 38 to the output shaft of the DC motor 35 and controls the engagement and disengagement of the electromagnetic clutch 38 through a control button, thereby realizing flexible switching between manual sliding and electric sliding of the C-shaped arm 1 .

[0095] The utility model provides a concept and method for a C-arm hidden cable arrangement structure for a medical X-ray machine. There are many methods and ways to implement the technical solution. The above is only a preferred implementation of the utility model. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model. These improvements and modifications should also be regarded as the protection scope of the utility model. All components not specified in this embodiment can be implemented by existing technologies.

Claims

1. A C-shaped arm hidden cable arrangement structure for a medical X-ray machine, characterized in that: The C-arm hidden cable arrangement structure includes: C-arm (1); An obliquely extending arm body (5), the C-shaped arm (1) being slidably connected to the obliquely extending arm body (5) and being capable of rotating relative to the obliquely extending arm body (5); A synchronous wheel transmission assembly (300), the synchronous wheel transmission assembly (300) comprising a synchronous wheel (20) and a synchronous belt (19), the synchronous wheel (20) being rotatably supported on the oblique arm body (5); two ends of the synchronous belt (19) being respectively fixedly connected to two ends of the C-shaped arm (1) and tensioned, the synchronous belt (19) passing through the synchronous wheel (20) in the synchronous wheel transmission assembly (300); A cable retracting assembly (400), the cable retracting assembly (400) comprising a cable (42) and a cable winding roller (21), the cable winding roller (21) being rotatably supported on the oblique extension arm body (5); one end of the cable (42) is wound around the cable winding roller (21), and the other end is passed through the C-shaped arm (1) and extends to the end of the C-shaped arm (1) and is fixed; The cable winding roller (21) is transmission-connected to the synchronous wheel (20), and is used for when the C-shaped arm (1) is manually driven to slide, the synchronous belt (19) drives the synchronous wheel (20) to move synchronously, and the synchronous wheel (20) drives the cable winding roller (21) to rotate, thereby driving the cable (42) to be retracted and released.

2. The C-arm hidden cable arrangement structure for a medical X-ray machine according to claim 1, characterized in that: The synchronous wheel transmission assembly (300) comprises a transmission sprocket A (16), and the transmission sprocket A (16) is coaxially connected to the synchronous wheel (20); the cable retracting assembly (400) comprises a cable sprocket (30), a cable transmission chain (31) and a chain tensioner (32), and the cable sprocket (30) is coaxially fixedly connected to the cable winding roller (21); the transmission sprocket A (16) is transmission-connected to the cable sprocket (30) via the cable transmission chain (31); the path of the cable transmission chain (31) passes through the chain tensioner (32), and the chain tensioner (32) is used to keep the cable transmission chain (31) in a tensioned state.

3. The C-arm hidden cable arrangement structure for a medical X-ray machine according to claim 2, characterized in that: The C-shaped arm hidden cable arrangement structure comprises a cable guide wheel (7), wherein the cable guide wheel (7) is rotatably supported on the oblique arm body (5), and the cable guide wheel (7) is used to guide the cable (42) into the C-shaped arm (1).

4. The C-arm hidden cable arrangement structure for a medical X-ray machine according to claim 3, characterized in that: The C-shaped arm hidden cable arrangement structure comprises a cable tensioner (11) and a tensioning spring (12); the cable tensioner (11) is used for keeping the cable (42) tensioned when the C-shaped arm (1) slides to drive the cable (42) to be retracted or extended; the cable tensioner (11) is rotatably connected to the oblique arm body (5), and one end of the cable tensioner (11) away from the oblique arm body (5) is in contact with and connected to the cable (42); one end of the tensioning spring (12) is fixedly connected to the oblique arm body (5), and the other end is connected to the cable tensioner (11) and drives the cable tensioner (11) to press the cable (42) in a direction close to the C-shaped arm (1).

5. The C-arm hidden cable arrangement structure for a medical X-ray machine according to claim 4, characterized in that: The C-shaped arm hidden cable arrangement structure comprises a pair of synchronous belt guide wheels (10), wherein the synchronous belt guide wheels (10) are both rotatably supported on the oblique arm body (5); the two ends of the synchronous belt (19) passing through the synchronous wheel (20) respectively pass through one of the pair of synchronous belt guide wheels (10) and then extend to the two ends of the C-shaped arm (1).

6. The C-arm hidden cable arrangement structure for a medical X-ray machine according to claim 5, characterized in that: The C-shaped arm hidden cable arrangement structure comprises a cable guide wheel bracket (8) and a synchronous belt guide wheel bracket (9), wherein the cable guide wheel bracket (8) and the synchronous belt guide wheel bracket (9) are respectively fixedly connected to the oblique arm body (5); the cable guide wheel (7) is rotatably connected to the cable guide wheel bracket (8) so that the cable guide wheel (7) is rotatably supported on the oblique arm body (5); each synchronous belt guide wheel (10) is rotatably supported on the synchronous belt guide wheel bracket (9), and the synchronous belt guide wheel bracket (9) is fixedly connected to the oblique arm body (5).

7. The C-arm hidden cable arrangement structure for a medical X-ray machine according to claim 6, characterized in that: The cable retracting assembly (400) comprises a left cable limit plate (22), a right cable limit plate (23), a cable spindle (24), a bearing, a spindle fixing plate (27) and a spindle fixing plate bracket (29); along the axial direction of the cable winding roller (21), the left cable limit plate (22) and the right cable limit plate (23) are respectively fixed to two ends of the cable winding roller (21); a cable spindle (24) is coaxially penetrated on the inner side of the cable winding roller (21), and both ends of the cable spindle (24) extend out of the cable winding roller (21), and the extended ends are respectively connected to the spindle fixing plate bracket (29). The cable sprocket (30) is provided between the cable left limit plate (22) and the spindle fixing plate bracket (29) and is coaxially fixedly installed on the cable spindle (24) so ​​as to realize the coaxial fixed connection between the cable sprocket (30) and the cable winding roller (21); the spindle fixing plate bracket (29) is fixedly connected to the oblique extension arm body (5).

8. The C-arm hidden cable arrangement structure for a medical X-ray machine according to claim 7, characterized in that: The C-shaped arm hidden cable arrangement structure comprises a rolling bearing group (6), a C-shaped arm handle (2), a C-shaped arm tube end counterweight (3) and a C-shaped arm flat end counterweight (4); the rolling bearing group (6) is mounted on the oblique arm body (5); the C-shaped arm (1) is connected to the oblique arm body (5) via the rolling bearing group (6); the C-shaped arm handle (2) is fixedly connected to the C-shaped arm (1); the C-shaped arm tube end counterweight (3) and the C-shaped arm flat end counterweight (4) are respectively connected to the two ends of the C-shaped arm (1).

9. The C-arm hidden cable arrangement structure for a medical X-ray machine according to claim 8, characterized in that: The C-arm hidden cable arrangement structure further comprises a motor drive assembly (500), wherein the motor drive assembly (500) is configured to drive the synchronous wheel (20) to rotate in a clutchable manner.

10. The C-arm hidden cable arrangement structure for a medical X-ray machine according to claim 9, characterized in that: The motor drive assembly (500) comprises a drive assembly bracket (33), a motor mounting plate (34), a DC motor (35), a spindle bearing (37), an electromagnetic clutch (38), a clutch spindle (36), an output sprocket (39) and a sprocket fixing plate (40); the drive assembly bracket (33) is fixedly connected to the oblique extension arm body (5); the clutch spindle (36) is rotatably mounted on the drive assembly bracket (33) via the spindle bearing (37); the output shaft of the DC motor (35) is connected to the clutch spindle (36), and the DC motor (35) is fixedly mounted on the drive assembly bracket (33) via the motor mounting plate (34); the output sprocket (39) is fixedly connected to the clutch spindle (36 ... 9) is fixedly sleeved on the sprocket fixing plate (40); the sprocket fixing plate (40) is rotatably sleeved on the clutch shaft (36); the output sprocket (39) is fixedly sleeved on the sprocket fixing plate (40) and is coaxially arranged with the clutch shaft (36); the sprocket fixing plate (40) is connected to the clutch shaft (36) through the electromagnetic clutch (38); the synchronous wheel transmission assembly (300) includes a transmission sprocket B (17) and a synchronous wheel transmission sprocket (41), the transmission sprocket B (17) is coaxially connected with the synchronous wheel (20); the output sprocket (39) is transmission-connected to the transmission sprocket B (17) through the synchronous wheel transmission sprocket (41).

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