Universal locking and unlocking mechanism

Abstract

The embodiment of the utility model relates to the technical field of medical instruments, and discloses a universal locking and unlocking mechanism applied to a universal joint with a universal rotating assembly. In the utility model, the actuating mechanism drives the first brake component to axially move on the support rod fixedly connected with the universal rotating component, and when the first brake component moves to the locking position of the support rod, the first brake component is coupled with the first locking structure of the base and the second locking structure of the support rod to prevent the universal rotating component from rotating; when the first brake part moves to the release position of the supporting rod, the first brake part is separated from the first locking structure of the base and the second locking structure of the supporting rod, and at the moment, the universal rotating assembly can be rotated to adjust the position and posture of the surgical instrument. Therefore, the structure of the universal locking and unlocking mechanism for controlling the universal joint can be simplified, the operation difficulty and the use threshold are reduced, the operation efficiency is improved, and the infection risk of a patient in an operation is further reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field, especially a universal locking and unlocking mechanism. BACKGROUND

[0002] In surgical operation, often appear the lesion area needing surgical treatment is blocked by other organs or prevents the sheltered situation, at this moment, need through the surgical instrument adjustment is specific position or attitude to facilitate the doctor to operate. However, in the surgical process requires other surgical personnel to keep fixed posture for a long time handholds surgical instrument, the difficulty is higher, the potential risk is bigger. Therefore, can adopt the universal joint and adjust the position and attitude of surgical instrument, and utilize corresponding universal locking and unlocking mechanism to fix the universal joint, and then make surgical instrument keep fixed position and attitude.

[0003] The existing universal locking and unlocking mechanism for controlling the universal joint is complex in structure, difficult to operate, high in use threshold, affects the operation efficiency, and increases the risk of infection of patients during operation. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a universal locking and unlocking mechanism, which can simplify the structure of the universal locking and unlocking mechanism for controlling the universal joint, reduce the operation difficulty and use threshold, improve the operation efficiency, and further reduce the risk of infection of patients during operation.

[0005] To solve the above technical problems, the embodiment of the utility model provides a universal locking and unlocking mechanism applied to a universal joint with a universal rotation assembly, which comprises:

[0006] A base is provided with a first locking structure, and the universal rotation assembly is rotatably connected to the base; a support rod is provided with a second locking structure, and the support rod has an opposite locking position and release position, and the support rod is used for fixedly connecting the universal rotation assembly; a first brake member is sleeved on the outer periphery of the support rod and can move along the axis of the support rod relative to the support rod; an actuating mechanism is transmissionally connected to the first brake member, and the actuating mechanism is used for driving the first brake member to move; the first brake member is configured to: when the first brake member is in the locking position, the first brake member is coupled to the first locking structure and the second locking structure to prevent the universal rotation assembly from rotating; when the first brake member is in the release position, the first brake member is decoupled from the first locking structure and the second locking structure to allow the universal rotation assembly to rotate.

[0007] Compared to the prior art, the embodiment of the present invention uses an actuating mechanism to drive the first brake member to move axially on a support rod fixedly connected to the universal joint assembly. When the first brake member is moved to the locking position of the support rod, the first brake member couples the first locking structure of the base and the second locking structure of the support rod to prevent the universal joint assembly from rotating. When the first brake member is moved to the release position of the support rod, the first brake member disengages the first locking structure of the base and the second locking structure of the support rod. At this time, the universal joint assembly can be rotated to adjust the position and posture of the surgical instrument. In this way, the structure of the universal locking and unlocking mechanism for operating the universal joint can be simplified, the difficulty of operation and the threshold for use can be reduced, which is conducive to improving surgical efficiency and further reducing the risk of infection for patients during surgery.

[0008] Optionally, the first locking structure and the second locking structure are located on a side of the first brake member facing away from the universal rotating assembly, and the actuating mechanism drives the first brake member away from the universal rotating assembly and couples the first locking structure and the second locking structure to limit the rotation of the universal rotating assembly; the actuating mechanism drives the first brake member toward the universal rotating assembly and disengages the first locking structure and the second locking structure to allow the universal rotating assembly to rotate.

[0009] Optionally, the support rod is a hollow rod with an axial through hole, and the support rod has a slide groove that penetrates through itself radially and extends axially; the first brake member includes a main body sleeved on the outer periphery of the support rod, and a push rod portion fixed to the main body, the push rod portion and the main body forming a receiving groove, and the main body is provided with a third locking structure; the actuating mechanism includes a shift rod and a driving assembly that partially extends into the axial through hole and is fixedly connected to the shift rod, the shift rod passes through the hollow rod from the axial through hole through the slide groove and extends into the receiving groove; the driving assembly is used to drive the shift rod to drive the push rod portion to move toward the second locking structure, so that the third locking structure is coupled to the second locking structure, and is used to drive the shift rod to drive the main body to move toward the universal rotating assembly, so that the third locking structure is disengaged from the second locking structure.

[0010] Optionally, the end surface portion of the support rod facing the first brake member is provided with a circumferentially extending sliding protrusion, the sliding protrusion is provided with the slide groove, the remaining portion of the end surface of the support rod facing the first brake member is provided with the second locking structure, the side of the main body facing away from the universal rotating assembly is provided with the third locking structure, and the second locking structure is arranged opposite to the third locking structure.

[0011] Optionally, the second locking structure is one of meshing teeth and tooth grooves, and the third locking structure is the other of the meshing teeth and tooth grooves, and the meshing teeth can be embedded in the tooth grooves to fix the first brake member and the support rod to each other; or, the second locking structure is one of meshing teeth and an elastic member, and the third locking structure is the other of the meshing teeth and the elastic member, and the meshing teeth can be embedded in the elastic member to fix the first brake member and the support rod to each other; or, the second locking structure and the third locking structure are both rough surfaces, and the second locking structure abuts the third locking structure to fix the first brake member and the support rod to each other by friction; or, the second locking structure and the third locking structure are both meshing teeth, and the second locking structure meshes with the third locking structure to fix the first brake member and the support rod to each other.

[0012] Optionally, there are two sliding protrusions symmetrically arranged on the hollow rod, there are two support rod portions symmetrically arranged on the main body, and both ends of the shift rod pass through the corresponding sliding grooves to pass through the hollow rod and extend into the accommodating groove.

[0013] Optionally, the universal locking and unlocking mechanism also includes a shell having an accommodating space, the driving assembly is located in the accommodating space and fixed to the shell, and the driving assembly includes a driving rod, a swing rod and a locking member; the swing rod has a first end and a second end relative to each other, the middle of the swing rod is pivotally connected to the shell, the first end is movably connected to one end of the driving rod away from the shift rod, and the second end is movably abutted against the locking member; the swing rod is configured: when the swing rod is rotated counterclockwise, the first end drives the driving rod to drive the third locking structure to couple the second locking structure, and the second end moves relative to the locking member until it is locked by the locking member; when rotated clockwise, the first end drives the driving rod to move away from one end of the shift rod to disengage the third locking structure from the second locking structure, and the second end moves relative to the locking member and disengages from the locking member to reset.

[0014] Optionally, the drive assembly also includes a first elastic member, one end of the first elastic member is pivotally connected to the first end, and the other end is pivotally connected to the shell; the locking member includes a second brake member and a second elastic member, the second brake member is pivotally connected to the shell, and one end of the second elastic member abuts the second brake member, and the other end abuts the shell; when force is applied to the swing lever to make it rotate counterclockwise, the first end stretches the first elastic member, and the second end moves relative to the second brake member and lifts the second brake member until the second end is engaged with the second brake member, so that the first brake remains in the locked position and the second elastic member is compressed; continue to rotate the swing lever counterclockwise, the first elastic member is stretched and the elastic potential energy is increased, releasing the swing lever, and the first elastic member drives the swing lever to rotate clockwise and disengage the second end from the second brake member, so that the first end can lift the drive lever and disengage the first brake member from the first locking structure.

[0015] Optionally, a limiting portion is provided at the second end, and the second brake member is a plate-shaped structure with a sliding edge. The second brake member has a limiting groove with an opening facing away from the sliding edge, and the limiting groove is provided with relative limiting entrances and limiting exits, and the limiting portion abuts the sliding edge; when the swing arm rotates counterclockwise, the limiting portion moves relative to the sliding edge and pushes the second brake member to rotate, and the second brake member compresses the second elastic member. When the limiting portion moves to disengage from the sliding edge, the second elastic member drives the second brake member to reset, and the limiting portion enters the limiting groove from the limiting entrance, and the swing arm is locked; when the swing arm is driven by the first elastic member to rotate clockwise, the limiting portion disengages from the limiting groove from the limiting exit.

[0016] Optionally, the drive assembly also includes a first elastic member, one end of the first elastic member is pivotally connected to the first end, the other end is pivotally connected to the housing, the second end is provided with a limiting portion, and the locking member includes a locking groove; when force is applied to the swing lever to rotate counterclockwise, the first elastic member is stretched by the first end, and the limiting portion is embedded in the locking groove to keep the first brake member in the locked position; when force is applied to the swing lever to rotate clockwise, the limiting portion disengages from the locking groove, and the first elastic member.

[0017] Optionally, a gear row is provided at one end of the driving rod away from the shift rod, a gear is fixed to the first end, the gear row is engaged with the gear, a limiting portion is provided at the second end, and the locking member includes a locking groove; when force is applied to the swing rod to rotate counterclockwise, the gear drives the driving rod to drive the first brake to couple to the first locking structure via the gear row, and the limiting portion is embedded in the locking groove to keep the first brake in the locked position; when force is applied to the swing rod to rotate clockwise, the gear drives the driving rod to drive the first brake to disengage from the first locking structure via the gear row, and the limiting portion disengages from the locking groove.

[0018] Optionally, the drive assembly also includes a first elastic member, the swing arm has a pivot shaft rotatably connected to the housing, the first elastic member is sleeved on the outer circumference of the pivot shaft, one end of the first elastic member abuts the pivot shaft, and the other end abuts the housing; when the swing arm rotates counterclockwise, the first elastic member is compressed, and when the swing arm rotates clockwise until the first brake member disengages from the first locking structure, the first elastic member fixes the position of the swing arm to keep the first brake member in the released position. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] One or more embodiments are exemplarily illustrated by pictures in the corresponding drawings. These exemplifications do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements. Unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure of the first universal locking and unlocking mechanism of the embodiment of the utility model;

[0021] Figure 2 yes Figure 1 A front view schematic diagram of the universal locking and unlocking mechanism;

[0022] Figure 3 yes Figure 1 A right side schematic diagram of the universal locking and unlocking mechanism;

[0023] Figure 4 yes Figure 1 Exploded diagram of the structure of the universal locking and unlocking mechanism;

[0024] Figure 5 yes Figure 1 A schematic structural diagram of the second brake member of the universal locking and unlocking mechanism;

[0025] Figure 6 This is a schematic diagram of the three-dimensional structure of the second universal locking and unlocking mechanism of the embodiment of the present utility model;

[0026] Figure 7 yes Figure 6 A right side schematic diagram of the universal locking and unlocking mechanism;

[0027] Figure 8 yes Figure 6 Exploded diagram of the structure of the universal locking and unlocking mechanism;

[0028] Figure 9 This is a schematic diagram of the three-dimensional structure of the third universal locking and unlocking mechanism of the embodiment of the present utility model;

[0029] Figure 10 yes Figure 9 A right side schematic diagram of the universal locking and unlocking mechanism;

[0030] Figure 11 yes Figure 9 Exploded diagram of the structure of the universal locking and unlocking mechanism;

[0031] Figure 12 This is a schematic diagram of the three-dimensional structure of the fourth universal locking and unlocking mechanism of the embodiment of the present utility model;

[0032] Figure 13 yes Figure 12 Schematic diagram of the exploded structure of the universal locking and unlocking mechanism. DETAILED DESCRIPTION

[0033] To make the objectives, technical solutions, and advantages of the present invention more clearly apparent, various embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will appreciate that many technical details are provided in various embodiments of the present invention to facilitate a better understanding of the present application. However, even without these technical details and the various variations and modifications based on the following embodiments, the technical solutions claimed in the claims of this application can be achieved.

[0034] In the embodiments of the present invention, terms such as "upper," "lower," "left," "right," "front," "back," "top," "bottom," "inner," "outer," "center," "vertical," "horizontal," "transverse," and "longitudinal" to indicate directions or positions are based on the directions or positions shown in the accompanying drawings. These terms are primarily intended to better describe the present invention and its embodiments and are not intended to limit the devices, elements, or components indicated to having a specific direction, or to being constructed or operated in a specific direction.

[0035] Furthermore, some of the above terms may be used to express other meanings besides indicating a position or location. For example, the term "on" may also be used to indicate a dependency or connection in certain circumstances. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0036] Furthermore, the terms "installed," "set," "provided with," "opened," "connected," and "connected" should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integral structures; mechanical connections or electrical connections; direct connections, indirect connections through an intermediary, or internal communication between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0037] Furthermore, the terms "first," "second," etc., are primarily used to distinguish between different devices, elements, or components (which may or may not be of the same type and configuration), and are not intended to indicate or imply the relative importance or quantity of the devices, elements, or components indicated. Unless otherwise specified, "plurality" means two or more.

[0038] An embodiment of the present utility model provides a universal locking and unlocking mechanism, which is applied to a universal joint with a universal rotating assembly, including: a base, provided with a first locking structure, and the universal rotating assembly is rotatably connected to the base; a support rod, the support rod is provided with a second locking structure, the support rod has a locking position and a release position relatively set, and the support rod is used to fixedly connect the universal rotating assembly; a first brake member, which is sleeved on the outer circumference of the support rod and can move relative to the support rod along the axis of the support rod; an actuating mechanism, which is transmission-connected to the first brake member, and the actuating mechanism is used to drive the first brake member to move; the first brake member is configured as follows: when the first brake member is in the locking position, the first brake member couples the first locking structure and the second locking structure to prevent the universal rotating assembly from rotating; when the first brake member is in the release position, the first brake member disengages from the first locking structure and the second locking structure to allow the universal rotating assembly to rotate.

[0039] The universal locking and unlocking mechanism of this embodiment uses an actuating mechanism to drive a first brake member to axially move on a support rod fixedly connected to the universal rotating assembly. When the first brake member moves to the locking position of the support rod, the first brake member couples with the first locking structure of the base and the second locking structure of the support rod to prevent the universal rotating assembly from rotating. When the first brake member moves to the release position of the support rod, the first brake member disengages from the first locking structure of the base and the second locking structure of the support rod. At this time, the universal rotating assembly can be rotated to adjust the position and posture of the surgical instrument. In this way, the structure of the universal locking and unlocking mechanism for operating the universal joint can be simplified, reducing the difficulty of operation and the threshold for use, which is conducive to improving surgical efficiency and further reducing the risk of infection for patients during surgery.

[0040] The following is a detailed description of the implementation details of the present invention. The following content is only for the convenience of understanding the implementation details, and is not necessary for the implementation of this solution.

[0041] See also Figures 1 to 4 The universal joint 100 typically includes a universal joint assembly having two rotating members with different rotational dimensions, and the rotational motion of the two rotating members is independent of each other. For example, the two rotating members can be configured as an annular structure, specifically a first rotating member 110 and a second rotating member 120 disposed outside the first rotating member 110, with the first rotating member 110 pivotally connected to the second rotating member 120. The first rotating member 110 has a first axis and can rotate relative to the second rotating member 120 about the first axis. The second rotating member 120 has a second axis and can rotate about the second axis, wherein the first axis is perpendicular to the second axis.

[0042] The universal joint 100 also includes a soft rope 130 and a push rod 140. A plurality of connecting parts 111 are provided on the first rotating member 110. The connecting parts 111 can be through holes or protrusions. One end of the soft rope 130 is connected to the above-mentioned connecting part 111, and the other end is connected to one end of the push rod 140. The end of the push rod 140 connected to the soft rope 130 is movably supported, and the other end of the push rod 140 is a free end. By rotating the first rotating member 110 and the second rotating member 120 in different dimensions, the free end of the push rod 140 can move freely, and the moving range of the free end forms a spherical surface. The surgical instruments used in the operation are usually fixed to the free end of the push rod 140. Therefore, the surgical instruments can be adjusted to different positions and postures within a certain range using the universal joint to adapt to actual surgical needs.

[0043] See again Figures 1 to 4The universal locking and unlocking mechanism 200 includes a base 201, to which the second rotating member 120 is rotatably connected. Specifically, the second rotating member 120 has a first pivot protrusion 121, and the base 201 has a first pivot hole 201a that cooperates with the first pivot protrusion 121. The first pivot protrusion 121 extends into the first pivot hole 201a. Under the action of an external force, the second rotating member 120 can rotate about the axis (second axis) of the first pivot protrusion 121. In other embodiments, the first pivot protrusion can be provided on the base 201, and the first pivot hole can be provided on the second rotating member 120, or the first pivot hole can be provided as a blind hole / recess. The base 201 is provided with a first locking structure 201b. When the universal rotating assembly needs to be fixed, the first locking structure 201b is used to prevent the second rotating member 120 from rotating relative to the base 201, thereby fixing one rotational dimension of the universal rotating assembly.

[0044] It should be noted that a support portion 201c may be provided on the base 201 to movably support the top rod 140. That is, the end of the top rod 140 supported on the support portion 201c is rotatable relative to the support portion 201c to meet the swing requirement of the top rod 140.

[0045] The connection between the first rotating member 110 and the second rotating member 120 can be set with reference to the connection between the second rotating member 120 and the base 201, and the details of the connection structure can also be appropriately adjusted according to actual conditions. The present invention does not impose too many restrictions on this.

[0046] The support rod 202 of the universal locking and unlocking mechanism 200 is fixedly connected to the first rotating member 110 and can rotate synchronously with the first rotating member 110. Specifically, a portion of the second rotating member 120 is located between the first rotating member 110 and the support rod 202. This portion of the second rotating member 120 is provided with a second pivot hole 122, and the end of the support rod 202 passes through the second pivot hole 122 and is fixedly connected to the first rotating member 110. It should be noted that the fixed connection between the support rod 202 and the first rotating member 110 can be detachably fixed, such as screw connection, bolt connection, threaded connection, clamping connection, adhesive connection, welding, etc., which is not specifically limited here. A second locking structure 202a is provided on the support rod 202. When the universal rotating assembly needs to be fixed, the second locking structure 202a is used to prevent the first rotating member 110 from rotating relative to the second rotating member 120, thereby fixing the other rotation dimension of the universal rotating assembly.

[0047] The first brake 203 of the universal locking and unlocking mechanism 200 is sleeved on the outer periphery of the support rod 202 and is movable along the axis of the support rod 202. Specifically, the support rod 202 has opposite locking and releasing positions, and the first brake 203 can be moved between the locking and releasing positions of the support rod 202 to keep the universal rotation assembly in a fixed position and posture, and thus keep the surgical instrument fixed.

[0048] The transmission mechanism of the universal locking and unlocking mechanism 200 is connected with the first brake 203, and the actuating mechanism is used to drive the first brake 203 to move axially along the support rod 202.

[0049] It can be understood that the first brake 203 is configured to couple the first locking structure 201b and the second locking structure 202a to prevent the universal rotation assembly from rotating when the first brake 203 is in the locking position, and to decouple the first locking structure 201b and the second locking structure 202a to allow the universal rotation assembly to rotate when the first brake 203 is in the releasing position.

[0050] In this way, by driving the first brake 203 to move axially along the support rod 202 which is fixedly connected with the universal rotation assembly, when the first brake 203 is moved to the locking position of the support rod 202, the first brake 203 couples the first locking structure 201b of the base 201 and the second locking structure 202a of the support rod 202 to prevent the universal rotation assembly from rotating, and when the first brake 203 is moved to the releasing position of the support rod 202, the first brake 203 decouples the first locking structure 201b of the base 201 and the second locking structure 202a of the support rod 202, at this time, the universal rotation assembly can be rotated to adjust the position and posture of the surgical instrument. In this way, the structure of the universal locking and unlocking mechanism 200 of the universal joint can be simplified, the operation difficulty and the use threshold can be reduced, the surgical efficiency can be improved, and the risk of infection of the patient during the operation can be further reduced.

[0051] In some embodiments, the first locking structure 201b and the second locking structure 202a are located on the side of the first brake 203 away from the universal rotation assembly, the actuating mechanism drives the first brake 203 to move axially along the support rod 202 away from the universal rotation assembly, and the first brake 203 is coupled with the first locking structure 201b and the second locking structure 202a to limit the rotation of the first rotating member 110 and the second rotating member 120. Alternatively, when the actuating mechanism drives the first brake 203 to move axially along the support rod 202 to approach the universal rotation assembly, the first brake 203 is decoupled from the first locking structure 201b and the second locking structure 202a, so that the first rotating member 110 and the second rotating member 120 can rotate.

[0052] In other embodiments, the first locking structure 201b and the second locking structure 202a may be disposed between the universal rotating assembly and the first brake 203. In this case, when the first brake 203 approaches the universal rotating assembly along the axial direction of the support rod 202, the first brake 203 also approaches the first locking structure 201b and the second locking structure 202a and couples with the first locking structure 201b and the second locking structure 202a, thereby securing the universal rotating assembly. When the first brake 203 moves away from the universal rotating assembly along the axial direction of the support rod 202, the first brake 203 disengages from the first locking structure 201b and the second locking structure 202a, allowing the universal rotating assembly to rotate. The following description uses the example of the first locking structure 201b and the second locking structure 202a being located on the side of the first brake 203 facing away from the universal rotating assembly, but the present invention is not limited to this.

[0053] See also Figure 13 In some embodiments, the support rod 202 is a hollow rod having an axial through-hole 202b, which has a slide groove 202c extending radially through the support rod 202 and axially extending therethrough. The first brake member 203 includes a body 203a sleeved around the outer periphery of the support rod 202, and a support rod portion 203b fixed to the body 203a. The support rod portion 203b and the body 203a form a receiving groove 203c. The body 203a is provided with a third locking structure 203d. The actuating mechanism includes a lever 204 and a drive assembly 205 that partially extends into the axial through-hole 202b. The lever 204 passes through the hollow rod from the interior of the axial through-hole 202b through the slide groove 202c and into the receiving groove 203c.

[0054] When the universal rotating assembly needs to be fixed, the drive assembly 205 drives the lever 204 to move. The lever 204 abuts the abutting portion 203b and drives the abutting portion 203b toward the second locking structure 202a. The body 203a and the abutting portion 203b move synchronously, causing the third locking structure 203d to move toward and couple with the second locking structure 202a. When the universal rotating assembly needs to be adjusted to adjust the surgical instrument, the drive assembly 205 drives the lever 204 away from the second locking structure 202a. The lever 204 abuts the body 203a, causing the body 203a to drive the third locking structure 203d away from the second locking structure 202a and disengage from the second locking structure 202a, allowing the universal rotating assembly to rotate.

[0055] It can be understood that a fourth locking structure 203e is also provided on the main body 203a. When the main body 203a moves toward the second locking structure 202a, the fourth locking structure 203e moves toward the first locking structure 201b and couples with the first locking structure 201b; when the main body 203a moves toward the universal rotating assembly, the fourth locking structure 203e moves away from the first locking structure 201b and disengages from the first locking structure 201b.

[0056] See also Figure 4 In some embodiments, a portion of the end surface of the support rod 202 facing the first brake member 203 is provided with a sliding protrusion 202d (e.g., a columnar shape) extending circumferentially and protruding toward the first brake member 203. The sliding protrusion 202d is provided with the aforementioned sliding groove 202c. The remaining portion of the end surface of the support rod 202 facing the first brake member 203 is provided with a second locking structure 202b. A third locking structure 203d is provided on the side of the body 203a facing away from the universal joint assembly, with the second locking structure 202b and the third locking structure 203d positioned opposite each other.

[0057] In one specific embodiment, two sliding protrusions 202d can be provided, and the two sliding protrusions 202d can be symmetrically arranged on the hollow rod, specifically with the axis of the hollow rod as the axis of symmetry. Each sliding protrusion 202d is provided with a sliding groove 202c. Two supporting rod portions 203b are also provided, and are symmetrically arranged on the body 203a with the axis of the hollow rod as the axis of symmetry. The two ends of the deflector rod 204 each pass through the hollow rod through a corresponding sliding groove 203c and extend into a corresponding receiving groove 203c. With this arrangement, when the deflector rod 204 applies force to the first brake member 203, both sides of the first brake member 203 are subjected to force, thereby balancing the internal forces of the universal locking and unlocking mechanism 200, improving the reliability of the universal locking and unlocking mechanism 200, and preventing internal interference or even jamming caused by unbalanced forces.

[0058] In other feasible implementations, the second locking structure 202b may also be provided on the outer periphery of the support rod 202, and the third locking structure 203d is provided opposite to the second locking structure 202b.

[0059] In one embodiment, the second locking structure 202b is one of a tooth and a groove, and the third locking structure 203d is the other of the tooth and the groove. For example, the second locking structure 202b is a tooth, and the third locking structure 203d is a groove that matches the tooth. When the second locking structure 202b and the third locking structure 203d are coupled, the tooth is inserted into the groove, so that the second locking structure 202b cannot rotate relative to the third locking structure 203d, and thus the first rotating member 110 cannot rotate. It is understood that the second locking structure 202b can also be a groove, and the third locking structure 203d can be a tooth.

[0060] In another embodiment, the second locking structure 202b is one of a tooth and an elastic member, and the third locking structure 203d is the other of the tooth and the elastic member. For example, the second locking structure 202b is a tooth, and the third locking structure 203d is an elastic member. When the second locking structure 202b and the third locking structure 203d are coupled, the tooth presses the elastic member, and the elastic member deforms in response to the action of the tooth, so that the second locking structure 202b cannot rotate relative to the third locking structure 203d, and thus the first rotating member 110 cannot rotate. It is understood that the second locking structure 202b can also be an elastic member, and the third locking structure 203d can be a tooth. Optionally, the elastic member can be made of rubber, silicone, or other elastic materials.

[0061] In yet another embodiment, the second locking structure 202b and the third locking structure 203d are both rough surfaces. When the second locking structure 202b and the third locking structure 203d are coupled, the rough surface of the second locking structure 202b abuts the rough surface of the third locking structure 203d, and this achieves coupling and fixation through friction, thereby preventing the second locking structure 202b from rotating, and thus preventing the first rotating member 110 from rotating. Optionally, the rough surface can be a microstructure formed by a large number of convex points, convex lines, or a combination of convex points and convex lines on a plane, or can be a large number of irregular microstructures on a plane.

[0062] In still another embodiment, the second locking structure 202b and the third locking structure 203d are both teeth. The second locking structure 202b and the third locking structure 203d are fixed by tooth engagement, thereby preventing the first rotating member 110 from rotating. Optionally, the tooth can be a triangular tooth, a trapezoidal tooth, a circular tooth, a spherical tooth, or the like.

[0063] It is understood that the second locking structure 202b can also be one of a rough surface and an elastic member, and the third locking structure 203d can be the other of the rough surface and the elastic member.

[0064] Again referring to Figures 1 to 4 Since the second rotating member 120 rotates relative to the base 201 about the second axis, when the second rotating member 120 rotates, the first rotating member 110 and the support rod 202 are driven to rotate as a whole by the second rotating member 120. At this time, the movement path of the first brake member 203 is an arc. Therefore, the first locking structure 201b can be arranged on the base 201 along an arc path. When the first brake member 203 is driven to rotate, the fourth locking structure 203e can be coupled to the first locking structure 201b within the range allowed by the universal locking and unlocking mechanism 200. It is understood that the specific configuration of the first locking structure 201b and the fourth locking structure 203e can refer to the configuration of the second locking structure 202b and the third locking structure 203d, and will not be repeated here.

[0065] The universal locking and unlocking mechanism 200 further includes a housing (not shown) having a housing space. The base 201, universal rotation assembly, support rod 202, and actuator mechanism can be disposed within the housing space. The base 201 and drive assembly 205 can be fixed to the housing. Alternatively, the base 201 can be formed as part of the housing, and the two can form an integrated structure.

[0066] See again Figure 4 In some embodiments, the drive assembly 205 includes a drive rod 205a, a swing rod 205b, and a locking member. The swing rod 205b has opposing first and second ends. The middle portion of the swing rod 205b is pivotally connected to the housing, i.e., the swing rod 205b forms a lever relative to the housing. The first end of the swing rod 205b is movably connected to the end of the drive rod 205a away from the deflector rod 204, and the second end of the drive rod 205a movably abuts the locking member.

[0067] To secure the universal joint assembly and lock the first brake member 203 in the locked position, the swing lever 205b can be rotated counterclockwise. The first end of the swing lever 205b drives the driving lever 205a to drive the shifting lever 204, thereby moving the first brake member 203 toward the second locking structure 202b until the third locking structure 203d is coupled to the second locking structure 202b. At this time, the second end moves relative to the locking member until it is locked by the locking member, thereby maintaining the position of the swing lever 205a, thereby maintaining the coupling between the third locking structure 203d and the second locking structure 202b, and thus maintaining the position and posture of the universal joint assembly.

[0068] To adjust the position and posture of the universal joint assembly, the swing lever 205b is rotated clockwise. The first end of the swing lever 205b drives the driving lever 205a to move a certain distance away from the detent lever 204. The detent lever 204 then drives the first brake 203 to move the third locking structure 203d away from the second locking structure 202b. The third locking structure 203d then disengages from the second locking structure 202b. At this point, the second end moves relative to the locking member and disengages from the locking member, achieving reset.

[0069] In one specific embodiment, the first end of the swing lever 205b can be connected to the end of the driving lever 205a away from the deflector lever 204 via a first elastic member 205c (e.g., a spring). For example, opposite ends of the first elastic member 205c are fixedly connected to pivot shafts, with one end of the pivot shaft rotatably connected to the driving lever 205a and the other end rotatably connected to the first end. In some other examples, the first elastic member 205c can be replaced by a rope.

[0070] In another specific embodiment, the first end may be provided with a second slot (not shown) extending along the axial direction of the swing rod 205b itself, and the end of the driving rod 205a away from the deflector rod 204 may be provided with a sliding portion (not shown), which extends into the second slot and can slide relative to the swing rod 205b. When the swing rod 205b drives the driving rod 205a to move, the driving rod 205a moves away from the end of the deflector rod 204 and slides relative to the swing rod 205b.

[0071] In some other embodiments, the end of the driving rod 205a away from the shifting rod 204 and the first end may also be matched using a worm gear, which will not be described in detail here.

[0072] See also Figures 6 to 8 In another specific embodiment, a gear row 205o is provided at one end of the driving rod 205a away from the shifting lever 204, and a gear 205p is fixed to the first end. The gear row 205o meshes with the gear 205p. When the swinging rod 205b is rotated counterclockwise, the gear 205p drives the gear row 205o to move, causing the first brake member 203 to move to the locked position. When the swinging rod 205b is rotated clockwise, the gear 205p drives the gear row 205o to move in the opposite direction, causing the first brake member 203 to release the locked position.

[0073] It is understood that when the second locking structure 202b is coupled to the third locking structure 203d, the first locking structure 201b is also coupled to the fourth locking structure 203e; and when the second locking structure 202b is disengaged from the third locking structure 203d, the first locking structure 201b is also disengaged from the fourth locking structure 203e. Therefore, by changing the position of the first brake member 203 (locked position or released position) through the driving assembly 205, the state of both the first rotating member 110 and the second rotating member 120 can be changed (fixed state or adjustable state).

[0074] See again Figures 1 to 4 In one specific embodiment, the drive assembly 205 further includes a second elastic member 205d, one end of which is pivotally connected to the first end and the other end is pivotally connected to the housing. The locking member includes a second brake member 205e and a third elastic member 205f. The second brake member 205e is pivotally connected to the housing, and the third elastic member 205f abuts the second brake member 205e at one end and the housing at the other end. When force is applied to the swing lever 205b, causing it to rotate counterclockwise, the first end stretches the second elastic member 205d, causing the second elastic member 205d to store elastic potential energy. Simultaneously, the second end abuts the second brake member 205e and moves relative to the second brake member 205e. The second brake member 205e rotates relative to the housing under the action of the second section, and the third elastic member 205f is compressed by the second brake member 205e until the second end engages the second brake member 205e, thereby fixing the position of the swing lever 205b and maintaining the first brake member 203 in the locked position. Optionally, the third elastic member 205f may be a spring or a torsion spring, and a torsion spring is preferably used.

[0075] When the first brake member 203 needs to be disengaged from the second locking structure 202b, the swing lever 205b can be further rotated counterclockwise to further increase the elastic potential energy of the second elastic member 205d, causing the second brake member 205e to continue rotating. The swing lever 205b is then released, and under the action of the second elastic member 205d, the swing lever 205b rotates clockwise, causing the second end to disengage from the second brake member 205e. Simultaneously, the first end drives the driving rod 205a to move, disengaging the first brake member 203 from the second locking structure 202b. The second brake member 205e is then reset under the action of the third elastic member 205f.

[0076] See also Figure 5More specifically, a stopper 205g is provided at the second end. The second brake member 205e is a plate-shaped structure with a sliding edge 205h. The second brake member 205e has a stopper slot 205i with an opening facing away from the sliding edge 205h. The stopper slot 205i has opposing stopper inlets 205j and exits 205k. The stopper portion 205g abuts the sliding edge 205h. When the swing arm 205a rotates counterclockwise, the stopper 205g moves relative to the sliding edge 205h, simultaneously pushing the second brake member 205e to rotate relative to the housing. The second brake member 205e compresses the third elastic member 205f, which stores elastic potential energy. When the limiting portion 205g slides to disengage from the sliding edge 205h, the third elastic member 205f returns to its original state and drives the second brake member 205e to reset. The pulling force of the second elastic member 205d causes the swing rod 205a to rotate clockwise, and the limiting portion 205g enters the limiting groove 205i from the limiting entrance 205j. The limiting portion 205g is restricted in the limiting groove 205i, so that the swing rod 205b is locked and the first brake member 203 is fixed in the locked position.

[0077] To release the first brake member 203 from the locked position, the swing lever 205b can be rotated counterclockwise. The stopper 205g abuts the inner wall of the stopper slot 205i, causing the second brake member 205e to rotate relative to the housing, adjusting its position. Simultaneously, the second elastic member 205d is stretched. The swing lever 205b is then released. The elastic force of the second elastic member 205d causes the swing lever 205b to rotate clockwise and disengage the stopper slot 205i from the stopper outlet 205k, thereby decoupling the swing lever 205b from the second brake member 205e. The second brake member 205e is then reset under the action of the third elastic member 205f.

[0078] It can be understood that the limiting groove 205i is arranged in a groove on one side of the second braking member 205e.

[0079] See again Figure 5 In one specific embodiment, the second brake member 205e is provided with a guide portion 2051 at a position opposite the opening of the limiting slot 205i. When the limiting portion 205g enters the limiting slot 205i from the limiting entrance 205j, the guide portion 2051 guides the limiting portion 205g into the limiting slot 205i and prevents the limiting portion 205g from sliding out of the limiting exit 205k. When the limiting portion 205g needs to be disengaged from the limiting slot 205i, the guide portion 2051 prevents the limiting portion 205g from moving to the limiting entrance 205j during the counterclockwise rotation of the swing arm 205b, thereby ensuring that the limiting portion 205g can slide out of the limiting exit 205k.

[0080] Specifically, the guide portion 205l can be a protrusion extending toward the opening of the limiting groove 205i, and the size of the portion close to the opening of the limiting groove 205i gradually decreases. The guide portion 205l is close to the end of the opening of the limiting groove 205i and is located on the side of the center line of the opening of the limiting groove 205i close to the limiting entrance 205j.

[0081] See also Figures 6 to 13 In another specific embodiment, the locking member includes a locking groove 205m, without the second brake 205e and third elastic member 205f. When the swing lever 205b is rotated counterclockwise, the second elastic member 205e is stretched, and the limiting portion 205g is inserted into the locking groove 205m and restrained by the inner wall of the locking groove 205m. This fixes the position of the swing lever 205b and secures the first brake 203 in the locked position. To release the first brake 203, the swing lever 205b is rotated clockwise to disengage the limiting portion 205g from the locking groove 205m.

[0082] It is understood that the locking groove 205m can be formed by bending a metal spring 205n. Specifically, the locking groove 205m formed by bending the metal spring 205n matches the size of the limiting portion 205g, while the opening of the locking groove 205m is smaller than the limiting portion 205g. In this way, the portion of the metal spring forming the opening of the locking groove 205m can restrain the limiting portion 205g, preventing the limiting portion 205g from unexpectedly escaping from the limiting groove 205m.

[0083] See again Figures 6 to 11 In another specific embodiment, the drive assembly 205 further includes a fourth elastic member 205q. The swing lever 205b has a pivot shaft 205r pivotally connected to the housing. The fourth elastic member 205q is sleeved around the outer periphery of the pivot shaft 205r. One end of the fourth elastic member 205q abuts the pivot shaft 205r, and the other end abuts the housing. When the swing lever 205b is rotated counterclockwise, the fourth elastic member 205q is compressed, and the stopper 205i engages with the locking groove 205m, achieving locking. When the swing lever 205b is rotated clockwise, disengaging the stopper 205i from the locking groove 205m, the fourth elastic member 205q can maintain the first brake member 203 in the released position.

[0084] Optionally, the fourth elastic member 205q may be a spring or a torsion spring, and a torsion spring is preferably used.

[0085] It should be noted that the above different implementation methods can be set independently or in any combination according to actual needs while being compatible with each other. The specific combination method will not be described in detail.

[0086] The universal locking and unlocking mechanism provided in the embodiment of the present invention is introduced in detail above. Specific examples are used in this article to illustrate the principle and implementation of the present invention. The description of the above implementation is only used to help understand the idea of ​​the present invention. There may be changes in the specific implementation and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A universal locking and unlocking mechanism, applied to a universal joint with a universal rotating assembly, characterized in that: include: A base is provided with a first locking structure, and the universal rotation assembly is rotatably connected to the base; A support rod, wherein the support rod is provided with a second locking structure, the support rod has a locking position and a release position arranged relatively, and the support rod is used to be fixedly connected to the universal rotating assembly; a first brake member, sleeved on the outer periphery of the support rod and movable relative to the support rod along the axis of the support rod; an actuating mechanism, drivingly connected to the first braking member, and configured to drive the first braking member to move; The first brake member is configured such that: when the first brake member is in the locking position, the first brake member couples the first locking structure and the second locking structure to prevent the universal rotation assembly from rotating; When the first brake is in the release position, the first brake is disengaged from the first locking structure and the second locking structure to allow the universal joint assembly to rotate.

2. The universal locking and unlocking mechanism according to claim 1, characterized in that: The first locking structure and the second locking structure are located on a side of the first brake member facing away from the universal rotation assembly, and the actuating mechanism drives the first brake member away from the universal rotation assembly and couples the first locking structure and the second locking structure to restrict the rotation of the universal rotation assembly; The actuating mechanism drives the first brake member to approach the universal joint assembly and disengage the first locking structure and the second locking structure to allow the universal joint assembly to rotate.

3. The universal locking and unlocking mechanism according to claim 2, characterized in that: The support rod is a hollow rod having an axial through hole, and the support rod has a slide groove that penetrates the support rod radially and extends axially; the first brake member includes a body sleeved on the outer periphery of the support rod, and a push rod portion fixed to the body, the push rod portion and the body forming an accommodating groove, and the body is provided with a third locking structure; the actuating mechanism includes a shift rod and a driving assembly that partially extends into the axial through hole and is fixedly connected to the shift rod, the shift rod passes through the hollow rod from the axial through hole through the slide groove and extends into the accommodating groove; The driving assembly is used to drive the shift rod to drive the push rod portion to move toward the second locking structure so that the third locking structure is coupled to the second locking structure, and is used to drive the shift rod to drive the body to move toward the universal rotation assembly so that the third locking structure is disengaged from the second locking structure.

4. The universal locking and unlocking mechanism according to claim 3, characterized in that: The end surface portion of the support rod facing the first brake member is provided with a circumferentially extending sliding protrusion, the sliding protrusion is provided with the sliding groove, the remaining portion of the end surface of the support rod facing the first brake member is provided with the second locking structure, the side of the main body facing away from the universal rotating assembly is provided with the third locking structure, and the second locking structure is arranged opposite to the third locking structure.

5. The universal locking and unlocking mechanism according to claim 4, characterized in that: The second locking structure is one of an engaging tooth and a tooth groove, and the third locking structure is the other of the engaging tooth and the tooth groove, wherein the engaging tooth can be embedded in the tooth groove to fix the first brake member and the support rod to each other; Alternatively, the second locking structure is one of a meshing tooth and an elastic member, and the third locking structure is the other of the meshing tooth and the elastic member, and the meshing tooth can be embedded in the elastic member to fix the first brake member and the support rod to each other; Alternatively, the second locking structure and the third locking structure both have rough surfaces, and the second locking structure abuts against the third locking structure to fix the first brake member and the support rod to each other through friction; Alternatively, the second locking structure and the third locking structure are both meshing teeth, and the second locking structure meshes with the third locking structure to fix the first brake member and the support rod to each other.

6. The universal locking and unlocking mechanism according to claim 4, characterized in that: There are two sliding protrusions, which are symmetrically arranged on the hollow rod, there are two supporting rod parts, which are symmetrically arranged on the body, and both ends of the shifting rod pass through the hollow rod through the corresponding sliding grooves and extend into the accommodating groove.

7. The universal locking and unlocking mechanism according to any one of claims 3 to 6, characterized in that: The universal locking and unlocking mechanism further includes a housing having an accommodating space, the driving assembly being located in the accommodating space and fixed to the housing, the driving assembly including a driving rod, a swinging rod, and a locking member; the swinging rod having a first end and a second end opposite to each other, a middle portion of the swinging rod being pivotally connected to the housing, the first end being movably connected to an end of the driving rod away from the shifting rod, and the second end being movably abutting against the locking member; The swing lever is configured such that: when the swing lever is rotated counterclockwise, the first end drives the driving lever to drive the third locking structure to couple to the second locking structure, and the second end moves relative to the locking member until it is locked by the locking member; When rotating clockwise, the first end drives the driving rod to move away from one end of the shifting rod to disengage the third locking structure from the second locking structure, and the second end moves relative to the locking component and disengages from the locking component to reset.

8. The universal locking and unlocking mechanism according to claim 7, characterized in that: The drive assembly further includes a first elastic member, one end of the first elastic member is pivotally connected to the first end, and the other end is pivotally connected to the housing; the locking member includes a second brake member and a second elastic member, the second brake member is pivotally connected to the housing, one end of the second elastic member abuts the second brake member, and the other end abuts the housing; When force is applied to the swing lever to rotate it counterclockwise, the first end stretches the first elastic member, and the second end moves relative to the second brake member and lifts the second brake member until the second end is engaged with the second brake member, so that the first brake member remains in the locked position and the second elastic member is compressed; the swing lever continues to rotate counterclockwise, the first elastic member is stretched and the elastic potential energy is increased, the swing lever is released, and the first elastic member drives the swing lever to rotate clockwise and disengage the second end from the second brake member, so that the first end can lift the drive lever and disengage the first brake member from the first locking structure.

9. The universal locking and unlocking mechanism according to claim 8, characterized in that: The second end is provided with a limiting portion, the second braking member is a plate-shaped structure with a sliding edge, the second braking member has a limiting groove with an opening facing away from the sliding edge, the limiting groove is provided with a limiting entrance and a limiting exit opposite to each other, and the limiting portion abuts against the sliding edge; When the swing arm rotates counterclockwise, the limiting portion moves relative to the sliding edge and pushes the second brake member to rotate, and the second brake member compresses the second elastic member. When the limiting portion moves to disengage from the sliding edge, the second elastic member drives the second brake member to reset, and the limiting portion enters the limiting groove from the limiting entrance, and the swing arm is locked; when the swing arm is driven by the first elastic member to rotate clockwise, the limiting portion disengages from the limiting groove from the limiting exit.

10. The universal locking and unlocking mechanism according to claim 7, characterized in that: The drive assembly further includes a first elastic member, one end of the first elastic member is pivotally connected to the first end, the other end is pivotally connected to the housing, the second end is provided with a limiting portion, and the locking member includes a locking groove; When a force is applied to the swing lever to rotate it counterclockwise, the first elastic member is stretched by the first end, and the limiting portion is embedded in the locking groove to keep the first brake member in the locked position; When force is applied to the swing lever to rotate clockwise, the limiting portion is disengaged from the locking groove and the first elastic member.

11. The universal locking and unlocking mechanism according to claim 7, wherein: The driving rod is provided with a tooth row at one end away from the shifting rod, a gear is fixed to the first end, the tooth row is engaged with the gear, the second end is provided with a limiting portion, and the locking member includes a locking groove; When force is applied to the swing lever to rotate it counterclockwise, the gear drives the drive lever via the gear row to drive the first brake to couple to the first locking structure, and the limiting portion is embedded in the locking groove to keep the first brake in the locked position; when force is applied to the swing lever to rotate it clockwise, the gear drives the drive lever via the gear row to drive the first brake to disengage from the first locking structure, and the limiting portion disengages from the locking groove.

12. The universal locking and unlocking mechanism according to claim 11, characterized in that: The driving assembly further includes a first elastic member, the swing arm having a pivot shaft rotatably connected to the housing, the first elastic member being sleeved around the outer circumference of the pivot shaft, one end of the first elastic member abutting the pivot shaft, and the other end abutting the housing; When the swing arm rotates counterclockwise, the first elastic member is compressed. When the swing arm rotates clockwise until the first brake member disengages from the first locking structure, the first elastic member fixes the position of the swing arm to keep the first brake member in the released position.

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