Tractor

Abstract

The utility model provides a tractor which comprises a traction assembly, and the traction assembly comprises an installation shell; the traction rod body is arranged in the mounting shell, one end of the traction rod body is connected with a mounting piece, and the mounting piece is used for being connected with the joint fixing piece; and the adjusting mechanism is connected with the traction rod body and is used for adjusting the traction rod body to move and stretch out and draw back in the mounting shell. Due to the fact that the traction rod body can move and stretch out and draw back in the installation shell through the adjusting mechanism, and one end of the traction rod body is provided with the joint fixing sleeve piece matched with the arthroscopic surgery through the installation piece, the joint fixing sleeve piece pulls the human body joint to move under the driving of moving and stretching out and drawing back of the traction rod body, and tension on soft tissue can be kept; the adjustable shoulder arthroscopy device effectively meets operation requirements of shoulder arthroscopy operation, improves operation efficiency of the shoulder arthroscopy, shortens operation time, and has the advantages of being simple in structure, easy and convenient to operate and low in cost.

Description

Technical Field

[0001] This utility model relates to the field of traction devices, and in particular to a traction device. Background Technology

[0002] The shoulder joint is the most mobile joint in the human body. Its anatomical structure is a ball-and-socket structure, which inherently contributes to its instability. With changing lifestyles and an increasing number of people participating in sports, various shoulder injuries have become a significant factor affecting quality of life and athletic performance.

[0003] Among these techniques, shoulder arthroscopy has become the preferred method for doctors to treat shoulder joint diseases due to its advantages such as minimal trauma, less tissue adhesion, and faster postoperative recovery. Continuous traction of the shoulder joint is crucial during arthroscopic surgery. Traction not only fully exposes the surgical field but also maintains tension on the soft tissues, reducing postoperative swelling caused by joint cavity irrigation.

[0004] However, current joint traction devices on the market are relatively cumbersome to operate. Summary of the Invention

[0005] To overcome the shortcomings of the existing technology, the technical solution adopted by this utility model to solve its technical problem is as follows:

[0006] This utility model provides a traction device, characterized in that it includes a traction assembly, the traction assembly comprising:

[0007] Install the casing;

[0008] A traction rod body is disposed inside the mounting housing, and one end of the traction rod body is connected to a mounting component, which is used to connect with the joint fixing component;

[0009] An adjustment mechanism is connected to the traction rod body, and the adjustment mechanism is used to adjust the movement and extension of the traction rod body within the mounting housing.

[0010] The beneficial effects of this utility model are as follows: This utility model provides a traction device, including a traction assembly, which includes: a mounting shell; a traction rod body disposed within the mounting shell, one end of which is connected to a mounting component for connection with a joint fixation component; and an adjustment mechanism connected to the traction rod body for adjusting the movement and extension of the traction rod body within the mounting shell. Because the traction rod body can move and extend within the mounting shell via the adjustment mechanism, and one end of the traction rod body is fitted with a joint fixation kit adapted for arthroscopic surgery via the mounting component, the joint fixation kit pulls the human joint along with the movement and extension of the traction rod body, while maintaining tension on the soft tissue. This effectively meets the operational requirements of shoulder arthroscopic surgery, improves the efficiency of shoulder arthroscopic surgery, shortens the surgical time, and simultaneously possesses the advantages of simple structure, easy operation, and low cost. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the following description of the embodiments will be briefly introduced. 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.

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0013] Figure 1 This is a schematic diagram of the overall structure of the traction device of this utility model;

[0014] Figure 2 This is an exploded view of the traction component and robotic arm component of this utility model.

[0015] Figure 3 yes Figure 2 Enlarged view at point A;

[0016] Figure 4 This is a schematic diagram of the traction component of this utility model;

[0017] Figure 5 This is a cross-sectional view of the traction component of this utility model;

[0018] Figure 6 This is an exploded view of the traction component of this utility model;

[0019] Figure 7 This is a partial internal structure diagram of the robotic arm assembly of this utility model;

[0020] Figure 8 yes Figure 7 Enlarged view at point B;

[0021] Figure 9This is a schematic diagram of the locking mechanism of this utility model;

[0022] Figure 10 This is a partial structural schematic diagram of the locking mechanism of this utility model;

[0023] Figure 11 This is an exploded view of the locking mechanism of this utility model;

[0024] Figure 12 This is a schematic diagram of the structure of the first locking pin of the locking mechanism of this utility model;

[0025] Figure 13 This is a schematic diagram of the structure of the first locking disc of the locking mechanism of this utility model;

[0026] Figure 14 This is a cross-sectional view of the traction device of this utility model;

[0027] Figure 15 yes Figure 14 Enlarged view at point C;

[0028] Figure 16 yes Figure 14 Enlarged view at point E;

[0029] Figure 17 yes Figure 14 Enlarged view at point F;

[0030] Figure 18 This is a schematic diagram of the overall structure of the traction device of this utility model from another perspective;

[0031] Figure 19 yes Figure 18 Enlarged view at point G;

[0032] Figure 20 This is a cross-sectional view of the present invention along the second unlocking axis and the adjusting hole;

[0033] Figure 21 yes Figure 20 Enlarged view at point H;

[0034] Figure 22 This is an exploded schematic diagram of the locking device of the traction assembly and the robotic arm assembly of this utility model;

[0035] Figure 23 yes Figure 22 Enlarged view at point I;

[0036] Figure 24 This is a schematic diagram of the adjustable fixing mechanism of this utility model;

[0037] Figure 25 This is an exploded view of the adjustable fixing mechanism of this utility model. Detailed Implementation

[0038] refer to Figures 1 to 25 A traction device includes a traction assembly 10, the traction assembly 10 comprising:

[0039] Install housing 1;

[0040] The traction rod 2 is located inside the mounting housing 1. One end of the traction rod 2 is connected to a mounting piece 21, which is used to connect with the joint fixing piece.

[0041] Adjustment mechanism 3 is connected to traction rod 2 and is used to adjust the movement and extension of traction rod 2 within the mounting housing 1.

[0042] The mounting component 21 can be connected to various joint fixation components, including but not limited to shoulder joint lateral decubitus kits, elbow joint kits, wrist joint kits, knee joint kits, and ankle joint kits.

[0043] With the above structure, since the traction rod 2 can move and extend within the mounting housing 1 through the adjustment mechanism 3, and one end of the traction rod 2 is equipped with a joint fixation kit adapted to arthroscopic surgery via the mounting part 21, the joint fixation kit pulls the human joint 8 to move under the movement and extension of the traction rod 2, and can maintain the tension on the soft tissue, effectively meeting the operation requirements of shoulder arthroscopic surgery, improving the efficiency of shoulder arthroscopic surgery, shortening the operation time, and at the same time having the advantages of simple structure, easy operation, and low cost.

[0044] In this embodiment, a buffer device 4 is also included, which is connected between the traction rod 2 and the adjustment mechanism 3. The adjustment mechanism 3 includes an adjustment housing 31 sleeved on the traction rod 2 and an adjustment member 32 that is pulsatorically connected to the adjustment housing 31. The rear end of the adjustment housing 31 is provided with a mounting groove 311. The mounting groove 311 is provided with a push member 33 sleeved on the traction rod 2 and the buffer device 4. The tail end of the traction rod 2 is fixedly sleeved with a fixing member 22. The buffer device 4 is pressed against the push member 33 and the fixing member 22 so that the fixing member 22 is pressed against the bottom wall of the mounting groove 311. When the adjustment member 32 rotates in the first direction, the adjustment housing 31 moves toward the fixing member 22, so that the bottom wall of the mounting groove 311 sequentially drives the push member 33, the buffer device 4 and the fixing member 22 to move, thereby driving the traction rod 2 to move toward the fixing member 22 within the adjustment housing 31. Specifically, the fixing member 22 is threadedly connected to the tail end of the adjustment housing 31.

[0045] With the above structure, the adjusting housing 31 can be moved backward by rotating the adjusting member 32 in the first direction. The bottom wall of the mounting groove 311 pushes the pushing member 33 to move backward. The pushing member 33 pushes the buffer device 4 to move. Under the buffering effect of the buffer device 4, the thrust will act on the fixing member 22 relatively slowly. Since the fixing member 22 is fixedly connected to the traction rod 2, the traction rod 2 will move with the movement of the fixing member 22, thereby effectively realizing the movement of the joint 8 fixing kit driven by the traction rod 2, which meets the operation requirements of arthroscopic surgery.

[0046] Furthermore, the buffer device 4 is a first spring 41, which is sleeved on the adjusting housing 31 and pressed against the pushing member 33 and the fixing member 22. With this structure, since the buffer device 4 is a spring, when the adjusting member 32 is rotated in the first direction, the first spring 41 is compressed under the pushing force of the pushing member 33. Only after overcoming the elastic force of the first spring 41 can the traction rod 2 be pushed, thus preventing the traction rod 2 from moving too quickly and causing damage to the human joint 8, effectively buffering and increasing safety.

[0047] Furthermore, the adjusting housing 31 is also provided with a limiting groove 312, and the traction rod 2 is provided with a limiting member 23 and located in the limiting groove 312. The limiting groove 312 has a first limiting wall 3121 and a second limiting wall 3122 that are opposite to each other. When the adjusting member 32 rotates in the second direction, the adjusting housing 31 moves toward the mounting member 21, so that the second limiting wall 3122 drives the limiting member 23 to move, thereby driving the traction rod 2 to move toward the mounting member 21 within the adjusting housing 31. When the adjusting member 32 rotates in the first direction, the traction rod 2 moves toward the fixing member 22 until the limiting member 23 abuts against the first limiting wall 3121.

[0048] Specifically, the limiting component 23 is the second screw 231, which is set through the traction rod body 2.

[0049] With the above structure, when the adjusting member 32 is rotated in a second direction different from the first direction, the adjusting housing 31 moves forward, and the limiting wall in the limiting groove 312 abuts against the limiting member 23 to drive the traction rod 2 to move forward. This effectively and quickly achieves the forward and backward movement adjustment of the traction rod 2. Furthermore, when the traction rod 2 moves backward to a certain extent, the limiting member 23 will abut against the first limiting wall 3121 to prevent the traction rod 2 from moving excessively backward, thereby straining the human joint 8 and causing irreversible damage. This effectively provides protection.

[0050] In this embodiment, the adjusting member 32 is an adjusting sleeve 321. The adjusting sleeve 321 has an internal thread 3212. The adjusting housing 31 has an adjusting ring 314 protruding from it. The adjusting ring 314 has an external thread 3141 that meshes with the internal thread 3212.

[0051] Furthermore, an inner mounting shell 5 is provided between the outer mounting shell 1 and the adjusting shell 31. The inner mounting shell 5 has a limiting ring 51, and the inner wall of the adjusting sleeve 321 has a limiting ring groove 3211. The limiting ring 51 and the limiting ring groove 3211 are engaged, allowing the adjusting sleeve 321 to rotate around the inner mounting shell 5. Through this structure, the engaging of the limiting ring 51 and the limiting ring groove 3211 allows the adjusting sleeve 321 to rotate in place. This, in turn, drives the adjusting shell 31 to move back and forth through the meshing of the internal thread 3212 and the external thread 3141, effectively realizing the traction function of the traction rod 2.

[0052] In this embodiment, a flexible sleeve 313 is also fitted onto the end of the adjusting housing 31 near the mounting member 21. The flexible sleeve 313 is located between the mounting inner housing 5 and the adjusting housing 31. The first screw 52 passes through the mounting inner housing 5, the flexible sleeve 313, and the adjusting housing 31 in sequence to fix the flexible sleeve 313 between the mounting inner housing 5 and the adjusting housing 31. Through the above structure, the flexible sleeve 313 prevents external dust and liquid from entering the interior and protects the traction device.

[0053] In this embodiment, the mounting outer shell 1 is provided with a locking clip 11, which is used to clamp the mounting outer shell 1 onto the mounting inner shell 5. With the above structure, when the locking clip 11 is pressed down, the mounting outer shell 1 can be firmly clamped onto the mounting inner shell 5, ensuring the safety and stability of the traction assembly 10 during traction movement. After being twisted upward to open, the installation position of the mounting outer shell 1, the mounting inner shell 5, and other components can be adjusted.

[0054] In this embodiment, the traction device also includes a robotic arm assembly 20, and the traction assembly 10 and the robotic arm assembly 20 are detachably connected via a locking device 6. Through this structure, the robotic arm assembly 20 serves to support and assist the traction assembly 10. Furthermore, the detachable connection via the locking device 6 facilitates the rapid separation and reassembly of the robotic arm assembly 20 and the traction assembly 10, allowing for flexible configuration of robotic arms of different specifications according to requirements.

[0055] In this embodiment, the lower end of the mounting housing 1 is provided with a connecting post 12, the upper end of the robotic arm assembly 20 is provided with a connecting pipe 201, and the locking device 6 includes a first locking member provided on the connecting pipe 201 and a locking mating member provided on the connecting post 12. When the connecting post 12 is inserted into the connecting pipe 201, the first locking member and the locking mating member are engaged to make the traction assembly 10 and the robotic arm assembly 20 detachably connected.

[0056] Furthermore, the first locking component includes a button 61, a stop ring 62 connecting the button 61, and a second spring 63 connected to the connecting tube 201 and pressed against the connection tube 201 and the button 61. The first locking component also includes a hollow groove 2011 provided on the connecting tube 201, in which the stop ring 62 can move. The locking mating component includes a stop ring groove 121 provided on the connecting post 12 and flush with the stop ring 62. When the button 61 is pressed, the spring is compressed, the stop ring 62 moves away from the connecting post 12, and the stop ring 62 disengages from the stop ring groove 121, allowing the connecting post 12 to move within the connecting tube 201. When the button 61 is released, the spring rebounds, and the stop ring 62 moves towards the connecting post 12 until the stop ring 62 engages with the stop ring groove 121, thereby locking the connecting post 12 and the connecting tube 201. Specifically, the outer wall of the connecting pipe 201 is provided with a mounting post 2012, and the second spring 63 is sleeved on the mounting post 2012.

[0057] With the above structure, the button 61 locking structure combined with the spring return mechanism allows for quick locking or unlocking of the connecting post 12 and the connecting tube 201 by pressing or releasing the button 61 with one hand without tools, greatly improving assembly efficiency and ease of operation.

[0058] In this embodiment, the robotic arm assembly 20 includes:

[0059] Multiple retainers 7 are connected to adjacent retainers 7 via joints 8;

[0060] The locking mechanism 9 is located at the connection between the retainer 7 and the joint 8. When the locking mechanism 9 is in the locked state, it controls the rigid connection between the retainer 7 and the joint 8; when the locking mechanism 9 is in the unlocked state, it controls the rotatable connection between the retainer 7 and the joint 8.

[0061] Linkage mechanism 30; adjacent locking mechanisms 9 are connected via linkage mechanism 30.

[0062] The unlocking mechanism 40 is connected to the locking mechanism 9 closest to the traction component 10. The unlocking mechanism 40 can be manipulated by external force to control the locking mechanism 9 to unlock or lock.

[0063] In this embodiment, the robotic arm is specifically an axial robotic arm that can be manually operated by the user to unlock it. This robotic arm can be used in the medical field, or in other fields requiring support; no limitation is made here.

[0064] In this embodiment, the unlocking mechanism 40 includes a housing 401, and a mounting base 410 is connected to the top of the housing 401. The mounting base 410 is fixedly connected to the connecting pipe 201 by a threaded connection.

[0065] In this embodiment, the unlocking mechanism 40 includes:

[0066] The conversion mechanism 420 includes a fixed rod 421 and a slider 422 that is slidably connected to the fixed rod 421.

[0067] A force-applying rod 430 is provided, one end of which is rotatably connected to a slider 422.

[0068] The trigger rod 440 has one end rotatably connected to the slider 422, and the other end is connected to the locking mechanism 9.

[0069] With the above structure, when an external force is applied to the force-applying rod 430, the force-applying rod 430 drives the slider 422 to slide along the fixed rod 421, which in turn drives the trigger rod 440 to move, triggering the locking mechanism 9 to unlock; when no external force is applied to the force-applying rod 430, the force-applying rod 430 resets, and similarly, the slider 422 drives the trigger rod 440 to lock the locking mechanism 9.

[0070] In this embodiment, the unlocking mechanism 40 further includes a handle 402, a fixing rod 421 fixedly connected to the housing 401, a handle 402 rotatably connected to the housing 401, and a force-applying rod 430 whose end is away from the slider 422 is rotatably connected to the handle 402. The conversion mechanism 420 is located inside the housing. In this embodiment, the housing is an elongated housing. When an external force is applied to the handle 402, it is also applied to the force-applying rod 430.

[0071] With the above structure, when an external force is applied to the force-applying rod 430, the locking mechanism 9 can be triggered to unlock. When the external force is removed from the force-applying rod 430, in order to facilitate the automatic reset of the force-applying rod 430, two springs are sleeved on the fixed rod 421, with the two springs located on both sides of the slider 422. When the external force is removed from the force-applying rod 430, the reset of the springs will, on the one hand, drive the force-applying rod 430 to reset, and on the other hand, drive the trigger rod 440 to reset, so that the locking mechanism 9 returns from the unlocked state to the locked state.

[0072] In this embodiment, the linkage mechanism 30 includes:

[0073] The connector 310 is rotatably connected to the housing of the retainer 7;

[0074] The first unlocking shaft 320 has one end connected to a locking mechanism 9 and the other end rotatably connected to the first end of the connector 310.

[0075] The second unlocking shaft 330 has one end rotatably connected to the second end of the connector 310, and the other end connected to another locking mechanism 9.

[0076] With the above structure, the connecting member 310 is an L-shaped rigid link, and the inflection point of the L-shaped rigid link is rotatably connected to the housing of the retaining member 7. The L-shaped rigid link transmits the movement of the first unlocking shaft 320 to the second unlocking shaft 330. The unlocking mechanism 40 is connected to the locking mechanism 9 located at one end. The trigger rod 440 of the unlocking mechanism 40 is used to trigger the locking mechanism 9 to unlock. The movement of the locking mechanism 9 is transmitted to the next locking mechanism 9 through the linkage mechanism 30. Therefore, the second unlocking shaft 330 is used to trigger the next locking mechanism 9 to unlock.

[0077] In this embodiment, at least one second unlocking shaft 330 is a spliced ​​unlocking shaft, and the second unlocking shaft 330 is formed by at least two unlocking shaft units 331 that can be spliced ​​together in a telescopic manner.

[0078] Through the above structure, the spliced ​​unlocking shaft achieves adaptive adjustment of the unlocking shaft length through the telescopic splicing structure, which can flexibly match the spacing changes of different locking mechanisms 9 or the offset of the linkage movement trajectory, ensuring continuous and reliable force transmission path, and the telescopic splicing structure can extend service life.

[0079] In this embodiment, both the first unlocking shaft 320 and the second unlocking shaft 330 are spliced ​​unlocking shafts, and the first unlocking shaft 320 is formed by at least two unlocking shaft units 331 that can be spliced ​​together in a telescopic manner.

[0080] In this embodiment, the two unlocking shaft units 331 are connected by threads, and the outer shell of at least one unlocking shaft unit 331 is a polygonal outer shell 3311. At least one retainer 7 has an adjustment hole 71 in its shell, the position of which corresponds to the polygonal outer shell 3311. A wrench can be inserted through the adjustment hole 71 and engaged with the polygonal outer shell 3311 to adjust the telescopic length between the two unlocking shaft units 331. With the above structure, the position of the adjustment hole 71 and the polygonal outer shell 3311 are designed to correspond, allowing the telescopic length calibration to be completed directly through the adjustment hole 71 without disassembling the linkage mechanism 30, greatly simplifying the debugging process and reducing the operational complexity.

[0081] In this embodiment, the locking mechanism 9 includes a first mating body 91 and a second mating body 92 that can be selectively connected. Of the two mating bodies 91 and 92, one is connected to the retainer 7 and the other is connected to the joint 8. The connection between the first mating body 91 and the second mating body 92 realizes the rigid connection between the retainer 7 and the joint 8.

[0082] Specifically, the first mating body 91 includes: a first turntable 911, connected to the retainer 7, with a through hole 9111 axially formed on the first turntable 911; a first locking pin 912, slidably connected to the through hole 9111; and a first force-applying element 913, connected to the unlocking mechanism 40 and engaged with the first locking pin 912, for driving the first locking pin 912 to move axially. The second mating body 92 includes: a first locking disc 921, connected to the joint 8, with a plurality of first locking grooves 9211 circumferentially formed on the first locking disc 921, into which the first locking pin 912 can be inserted.

[0083] Specifically, the axial direction is the direction of axis D, and the retainer 7 and the joint 8 can rotate relative to each other around axis D.

[0084] With the above structure, when the first force-applying element 913 applies axial force to the first locking pin 912, causing the first locking pin 912 to disengage from the first locking groove 9211, the first turntable 911 and the first locking disc 921 can rotate relative to each other, that is, the retainer 7 and the joint 8 can rotate relative to each other. When the first locking pin 912 is subjected to a force in the opposite direction, causing the first locking pin 912 to engage with the first locking groove 9211, the first turntable 911 and the first locking disc 921 are fixedly connected, that is, the retainer 7 and the joint 8 are rigidly connected. Specifically, in the locking mechanism 9 connected to the unlocking mechanism 40, one end of the first force-applying element 913 is connected to the trigger rod 440, and the other end is connected to the first unlocking shaft 320; the first unlocking shaft 320 is connected to the next locking structure through the connector 310 and the second unlocking shaft 330 to transmit the motion; that is, in the next locking mechanism 9, one end of the first force-applying element 913 is connected to the second unlocking shaft 330 of the linkage mechanism 30, and the other end is connected to the first unlocking shaft 320 in the next linkage mechanism 30, and so on.

[0085] In this embodiment, the first mating body 91 further includes: a pre-tightening disc 914, which is connected to the retainer 7 and spaced apart from the first turntable 911; a first pre-tightening element 915, one end of which is connected to the pre-tightening disc 914 and the other end of which is connected to the first locking pin 912; the first locking pin 912 includes a pin body 9121 and an insert portion 9122 located at one end of the pin body 9121, the pin body 9121 is provided with a locking pin groove 9123, the first force-applying element 913 engages with the locking pin groove 9123, and the insert portion 9122 can be inserted into the first locking groove 9211; the insert portion 9122 is symmetrically provided with a first arc surface 91221 and a second arc surface 91222, and the internal shape of the first locking groove 9211 is adapted to the shape of the insert portion 9122. With the above structure, when the first force-applying element 913 applies force to the first locking pin 912 along the axial direction, causing the first locking pin 912 to disengage from the first locking groove 9211, the first pre-tightening element 915 is compressed; when the first pre-tightening element 915 recovers its deformation, the first locking pin 912 is inserted into the first locking groove 9211.

[0086] Furthermore, the first locking pin 912 includes a pin body 9121 and an engaging portion 9122 located at one end of the pin body 9121, the engaging portion 9122 being able to be inserted into the first locking groove 9211. The engaging portion 9122 is provided to facilitate insertion into the first locking groove 9211. A receiving hole 9124 is provided at the end of the pin body 9121 away from the engaging portion 9122, and the first pre-tightening element 915 is partially located within the receiving hole 9124.

[0087] Furthermore, when the engaging portion 9122 of the first locking pin 912 engages with the first locking groove 9211, the first arc surface 91221 and the second arc surface 91222 respectively form complete surface contact with the two arc surfaces within the first locking groove 9211, so that the two contact surfaces respectively form blocking surfaces for locking the clockwise and counterclockwise relative rotation of the first mating body 91 and the second mating body 92. In other words, the arrangement of the first arc surface 91221 and the second arc surface 91222 ensures that even if only the engaging portion 9122 of the first locking pin 912 is inserted into the first locking groove 9211 and in arc surface contact, the first mating body 91 and the second mating body 92 can be locked in both clockwise and counterclockwise relative rotational directions.

[0088] Furthermore, the number of first locking grooves 9211 exceeds the number of first locking pins 912. Consequently, the angular distance between two directly adjacent first locking pins 912 differs from the angular distance between two adjacent first locking grooves 9211. Therefore, the vernier configuration of the first locking pins 912 relative to the first locking grooves 9211 allows for unrestricted rotation angles when the retainer 7 and the joint 8 rotate relative to each other, facilitating flexibility and practicality.

[0089] Furthermore, a locking pin groove 9123 is provided on the pin body 9121, and the first force-applying element 913 engages with the locking pin groove 9123. Multiple first locking pins 912 are arranged around the first force-applying element 913, with the edge of the first force-applying element 913 located within the locking pin groove 9123. Because the locking pin groove 9123 has a certain length along the axial direction, when the first force-applying element 913 moves a sufficient length along the axial direction, it can cause the first locking pin 912 to disengage from the first locking groove 9211 along the axial direction. When the first force-applying element 913 returns to its axial position, because the locking pin groove 9123 has a certain length along the axial direction, the first force-applying element 913 does not apply force to the first locking pin 912; instead, the first pre-tightening element 915 engages the first locking pin 912 with the first locking groove 9211 to restore its deformation.

[0090] In summary, when an external force is applied to the handle 402, the trigger rod 440 moves via the conversion mechanism 420. The trigger rod 440 drives the first force-applying element 913 of the locking mechanism 9 connected to it to move axially. The first force-applying element 913 drives the first locking pin 912 to move axially and disengage from the first locking groove 9211. At the same time, the first pre-tightening element 915 is compressed. The first force-applying element 913 transmits the motion to the next unlocking mechanism 40 through the linkage mechanism 30, thereby unlocking all retaining members 7 and joints 8 simultaneously. When the external force is removed from the handle 402, the trigger rod 440 resets, the first force-applying element 913 resets, and the first pre-tightening element 915 recovers its deformation, thereby pushing the first locking pin 912 to move axially and engage with the first locking groove 9211. At the same time, the first force-applying element 913 transmits the motion to the next unlocking mechanism 40 through the linkage mechanism 30, thereby locking the retaining members 7 and joints 8.

[0091] In this embodiment, the robotic arm assembly 20 further includes an adjustable fixing mechanism 50, which is connected to the retaining member 7 at the far end. The adjustable fixing mechanism 50 is used to fix the robotic arm assembly 20 onto the bed frame frame 60. With the above structure, the adjustable fixing mechanism 50 supports rapid adaptation to different thicknesses, shapes, or materials of the bed frame frame 60, meeting the needs of different environments.

[0092] Furthermore, the adjustable fixing mechanism 50 includes a fixing body 510, a fixing clamp 520 slidably connected to the fixing body 510, and a second locking member 530 that locks the fixing member 22 to the fixing body 510. The second locking member 530 is slidably connected to the fixing clamp 520, and the fixing body 510 and the fixing clamp 520 form a locking space 540 around each other. The locking space 540 is used to accommodate and fix the fixing member 22 to the bed frame frame 60. With the above structure and the adjustable locking space 540, users can easily install and remove the robotic arm assembly 20 according to different environments, reducing the complexity of operation.

[0093] Furthermore, the second locking member 530 includes a head 531 and a tail 532. The top of the fixing member body 510 has a first mounting hole 511, and the top of the fixing block 520 has a second mounting hole 521. The tail 532 passes through the first mounting hole 511 and is threadedly connected to the second mounting hole 521. Through the threaded connection between the locking member and the fixing block 520, the size of the locking space 540 can be effectively adjusted, effectively adapting to different bedside frames or other occasions requiring clamping and fixing.

[0094] Furthermore, the fixing body 510 includes a mounting portion 512 and a first inclined clamping arm 513 connected to the mounting portion 512. The mounting portion 512 has a mounting groove 5121, and the fixing block 520 has a mounting slider 522 and a second inclined clamping arm 523 connected to the mounting slider 522. When the mounting slider 522 is engaged with the mounting groove 5121, the first inclined clamping arm 513, the front wall of the mounting portion 512, the front wall of the mounting slider 522, and the second inclined clamping arm 523 together form a locking space 540. With the above structure, the structure is simple, the design is ingenious, and a stable, adjustable locking space 540 is effectively formed.

[0095] The above description provides one or more embodiments in conjunction with specific content, but it is not intended that the specific implementation of this utility model is limited to these descriptions. Any methods or structures that are similar to or identical to those of this utility model, or any technical deductions or substitutions made based on the concept of this utility model, should be considered within the scope of protection of this utility model.

Claims

1. A traction device, characterized in that, The traction assembly (10) includes: a mounting housing (1); a traction rod (2) disposed inside the mounting housing (1), one end of which is connected to a mounting member (21) for connecting with a joint fixing member; and an adjustment mechanism (3) connected to the traction rod (2) for adjusting the movement and extension of the traction rod (2) within the mounting housing (1).

2. The traction device according to claim 1, characterized in that, It also includes a buffer device (4), which is connected between the traction rod body (2) and the adjustment mechanism (3); the adjustment mechanism (3) includes an adjustment housing (31) sleeved on the traction rod body (2) and an adjustment member (32) pulsatingly connected to the adjustment housing (31). The rear end of the adjustment housing (31) is provided with a mounting groove (311), and the mounting groove (311) is provided with a pusher (33) sleeved on the traction rod body (2) and the buffer device (4). The tail end of the traction rod body (2) is fixedly sleeved with a fixing member (22). The impact device (4) abuts against the pusher (33) and the fixing member (22) so that the fixing member (22) abuts against the bottom wall of the mounting groove (311); when the adjusting member (32) rotates in the first direction, the adjusting housing (31) moves toward the fixing member (22) so that the bottom wall of the mounting groove (311) sequentially drives the pusher (33), the buffer device (4) and the fixing member (22) to move, thereby driving the traction rod (2) to move toward the fixing member (22) in the adjusting housing (31).

3. A traction device according to claim 2, characterized in that, The adjusting housing (31) is also provided with a limiting groove (312), and the traction rod (2) is provided with a limiting member (23) and located in the limiting groove (312). The limiting groove (312) has a first limiting wall (3121) and a second limiting wall (3122) opposite to each other. When the adjusting member (32) rotates in the second direction, the adjusting housing (31) moves toward the mounting member (21) so that the second limiting wall (3122) drives the limiting member (23) to move, thereby driving the traction rod (2) to move toward the mounting member (21) in the adjusting housing (31). When the adjusting member (32) rotates in the first direction, the traction rod (2) moves toward the fixing member (22) until the limiting member (23) abuts against the first limiting wall (3121).

4. A traction device according to claim 3, characterized in that, The adjusting component (32) is an adjusting sleeve (321), the adjusting sleeve (321) is provided with an internal thread (3212), the adjusting housing (31) is provided with an adjusting ring (314), and the adjusting ring (314) is provided with an external thread (3141) that meshes with the internal thread (3212).

5. A traction device according to claim 4, characterized in that, An inner mounting shell (5) is provided between the mounting outer shell (1) and the adjusting shell (31). A limiting ring (51) is provided on the inner mounting shell (5), and a limiting ring groove (3211) is provided on the inner wall of the adjusting sleeve (321). The limiting ring (51) and the limiting ring groove (3211) are locked together so that the adjusting sleeve (321) can rotate around the inner mounting shell (5).

6. A traction device according to claim 3, characterized in that, The buffer device (4) is a first spring (41), which is sleeved on the adjusting housing (31) and pressed against the pusher (33) and the fixing member (22).

7. A traction device according to claim 5, characterized in that, A flexible sleeve (313) is also fitted on one end of the adjusting housing (31) near the mounting member (21). The flexible sleeve (313) is located between the mounting inner shell (5) and the adjusting housing (31). A first screw (52) passes through the mounting inner shell (5), the flexible sleeve (313) and the adjusting housing (31) in sequence to fix the flexible sleeve (313) between the mounting inner shell (5) and the adjusting housing (31).

8. A traction device according to claim 3, characterized in that, The limiting member (23) is a second screw (231), which penetrates the adjusting housing (31); the fixing member (22) is threaded to the tail end of the adjusting housing (31).

9. A traction device according to claim 5, characterized in that, The mounting housing (1) is provided with a locking clip (11) for clamping the mounting housing (1) onto the mounting inner housing (5).

10. A traction device according to claim 1, characterized in that, The traction device also includes a robotic arm assembly (20), and the traction assembly (10) and the robotic arm assembly (20) are detachably connected by a locking device (6).

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