Parking mechanism and medical equipment

Abstract

The present invention relates to the technical field of surgical robots, and discloses a parking mechanism and medical equipment. The parking mechanism includes a base, a brake assembly and a pedal assembly. The base is rotatably provided with a caster; the brake assembly includes a brake shaft and a transmission member, and the brake shaft can rotate around its own axis to switch the caster between a locked state and a universal state, and one end of the transmission member is fixedly connected to the brake shaft; the pedal assembly has a first position, a second position and a third position, and after the pedal assembly slides from the first position to the third position, it returns to and is locked in the second position, and the other end of the transmission member contacts the second face during this process; after the pedal assembly slides from the second position to the third position, it returns to and is locked in the first position, and the other end of the transmission member contacts the first face during this process. According to the present invention, after the caster is switched to the locked state, the brake shaft will not continue to rotate with the further movement of the pedal assembly, thereby avoiding damage to the internal structure of the caster and extending the service life of the parking mechanism.

Description

Technical Field

[0001] The present invention relates to the technical field of surgical robots, and in particular to a parking mechanism and medical equipment. Background Art

[0002] Surgical robots are widely used in the medical field. Surgical robots usually include a doctor's console and a patient's surgical end. Universal wheels are usually set under the base of the main console, so that medical staff can move the main console to a suitable position before the operation. A wheel locking mechanism is set in the base, which can switch the universal wheel between the universal state and the locked state.

[0003] The wheel locking mechanism includes a hexagonal shaft, and a locking hole is provided on the universal wheel. The locking hole has a hexagonal outline. The hexagonal shaft is inserted into the locking hole, and the locking component in the universal wheel can be triggered by rotating the hexagonal shaft, so that the universal wheel can switch between the universal state and the locked state. For some universal wheels, when the universal wheel is in the universal state, the universal wheel switches from the universal state to the locked state after the hexagonal shaft rotates a specified angle; when the universal wheel is in the locked state, the universal wheel switches from the locked state to the universal state after the hexagonal shaft rotates a specified angle in the opposite direction. If the rotation angle of the hexagonal shaft exceeds the specified angle, the internal structure of the universal wheel may be damaged. If the rotation angle of the hexagonal shaft is less than the specified angle, the locking component of the universal wheel is not fully triggered, and the wheel locking effect of the universal wheel is poor.

[0004] Chinese patent application CN216280109U discloses an anesthesia machine base and anesthesia machine, which includes a limit assembly, which can lock the brake rod (i.e., the hexagonal shaft) at a position where the rotation angle is limited. Specifically, the locking member in the limit assembly moves in the vertical direction and can drive the brake rod to rotate through the gear and the rack. The greater the distance the locking member descends, the greater the angle of rotation of the brake shaft. During the movement of the locking member, the locking member descends from the initial position to the middle position, and then rises from the middle position to the locking position. When the locking member is in the locking position, the universal wheel is in a locked state. It can be understood that when the locking member is in the middle position, the angle of rotation of the brake shaft is greater than the angle of rotation of the brake shaft when the locking member is in the locking position, that is, the internal structure of the universal wheel may be damaged, which increases the maintenance cost, and the braking effect cannot be guaranteed after the universal wheel is damaged, which may affect the doctor's operation and reduce the safety of the operation. In some other prior arts, the brake shaft is divided into two sections. When the universal wheel switches from a universal state to a locked state, the two sections of the brake shaft rotate synchronously. When the universal wheel is in a locked state, the two sections of the brake shaft rotate asynchronously, and one section connected to the universal wheel is stationary while the other section continues to rotate. However, this structure is relatively complicated, and setting the brake shaft as a segmented structure also shortens the service life of the brake shaft.

[0005] Based on this, there is an urgent need for a parking mechanism and medical equipment to solve the above-mentioned problems. Summary of the invention

[0006] The purpose of the present invention is to provide a parking mechanism and medical equipment, so that after the caster is switched to a locked state, the brake shaft will not continue to rotate with the further movement of the pedal assembly, thereby avoiding damage to the internal structure of the caster, extending the service life of the parking mechanism, reducing surgical costs, and improving surgical safety.

[0007] To achieve this object, the present invention adopts the following technical solutions:

[0008] Parking mechanism, including:

[0009] The base is rotatably provided with casters;

[0010] A brake assembly, comprising a brake shaft and a transmission member, wherein the axis of the brake shaft extends along a first direction, the brake shaft is coaxially arranged in a locking hole of the caster, the brake shaft can rotate around its own axis to switch the caster between a locking state and a universal state, one end of the transmission member is fixedly connected to the brake shaft, and the transmission member is arranged at an angle to the brake shaft;

[0011] A tread assembly is capable of sliding along a second direction perpendicular to the first direction, the tread assembly has a first position, a second position and a third position, the first position, the second position and the third position are arranged in sequence along the second direction, when the tread assembly is in the first position, the caster is in the universal state, when the tread assembly is in the second position, the caster is in a locked state, after the tread assembly slides from the first position to the third position, it can return to and be locked in the second position, and after the tread assembly slides from the second position to the third position, it can return to and be locked in the first position;

[0012] A contact surface is provided on a side of the pedal assembly facing the transmission member, the contact surface includes a first surface and a second surface, the first surface is connected to the second surface, the first surface and the second surface are both arranged parallel to the first direction, the first surface is arranged parallel to the second direction, and the second surface is arranged inclined to the second direction;

[0013] The pedal assembly is configured such that when the other end of the transmission member moves between the first position and the second position, the other end of the transmission member contacts the second face portion; when the pedal assembly is configured such that when the other end of the transmission member is in the second position, the other end of the transmission member contacts the connection between the first face portion and the second face portion; and when the pedal assembly is configured such that when the other end of the transmission member moves between the second position and the third position, the other end of the transmission member contacts the first face portion.

[0014] As an optional technical solution of the parking mechanism, a groove is formed on a side of the pedal assembly facing the transmission member, and a bottom surface of the groove forms the first surface portion.

[0015] As an optional technical solution for the parking mechanism, the pedal assembly includes a sliding member and a reinforcement member, the reinforcement member is embedded in the sliding member, the outer surface of the reinforcement member is exposed to the sliding member, the outer surface of the reinforcement member forms the contact surface, and the hardness of the reinforcement member is greater than the hardness of the sliding member.

[0016] As an optional technical solution of the parking mechanism, the reinforcement member is detachably connected to the sliding member.

[0017] As an optional technical solution of the parking mechanism, a roller is rotatably provided at the end of the transmission member, and the roller is in rolling contact with the contact surface.

[0018] As an optional technical solution of the parking mechanism, the parking mechanism further includes a locking assembly, the locking assembly includes a swing arm and an annular guide slide, one end of the swing arm is rotatably connected to the pedal assembly via a rotating shaft, the rotating shaft is arranged perpendicular to the second direction, a guide groove is provided on the base, a guide block is arranged in the middle of the guide groove, the side wall of the guide block and the inner wall of the guide groove are arranged to form the guide slide, and the other end of the swing arm can slide unidirectionally in the guide slide;

[0019] The side wall of the guide block includes a first surface and a second surface inclined at the second direction, the first surface and the second surface are connected at an angle to form a corner structure, when the treading assembly is configured to be in the first position, the swing arm is in the initial position; when the swing arm is configured to be in the initial position, the end of the swing arm away from the rotating shaft is arranged opposite to the second surface along the second direction, so that when the treading assembly is configured to move between the first position and the second position, the end of the swing arm slides along the second surface to achieve unidirectional sliding of the end of the swing arm;

[0020] A limiting groove is provided on the side wall of one end of the guide block opposite to the corner structure, and the end of the rocker arm can move into or out of the limiting groove. When the pedal assembly is configured to be in the second position, the end of the rocker arm is placed in the limiting groove.

[0021] As an optional technical solution of the parking mechanism, the swing rod is configured so that when it is in the initial position, the swing rod is arranged obliquely to the second surface, and the end of the swing rod away from the rotating shaft is inclined toward the direction of the one-way sliding;

[0022] The locking assembly further comprises a rocker rod reset member, which can reset the rocker rod to the initial position.

[0023] As an optional technical solution for the parking mechanism, the rocker arm reset member is a torsion spring, one free end of the torsion spring is connected to the rocker arm, a strip hole is provided on the pedal assembly, an abutment is provided in the strip hole, the other free end of the torsion spring abuts against the abutment, and the abutment can move along the strip hole to adjust the angle between the rocker arm in the initial position and the second surface.

[0024] As an optional technical solution of the parking mechanism, the parking mechanism further includes a guide assembly, the guide assembly includes a guide rail and a slider, the guide rail is connected to the base, the guide rail extends along the second direction, the slider is connected to the pedal assembly, and the guide rail and the slider are slidably matched;

[0025] And / or, the parking mechanism further includes a pedal reset member, and the pedal reset member can restore the pedal assembly from the third position to the first position.

[0026] Medical device including a parking mechanism as described above.

[0027] Beneficial effects of the present invention:

[0028] The parking mechanism provided by the present invention comprises a base, a brake assembly and a pedal assembly. During the movement of the pedal assembly between the first position and the second position, the end of the transmission member contacts the second face portion, which can realize the conversion of the linear movement of the pedal assembly along the second direction into the rotation of the brake shaft, so that the caster is switched between the locked state and the universal state; during the movement of the pedal assembly between the second position and the third position, the end of the transmission member contacts the first face portion, and the brake shaft does not continue to rotate. In the parking mechanism provided by the present invention, after the caster is switched to the locked state, the brake shaft does not continue to rotate with the further movement of the pedal assembly, thereby avoiding damage to the internal structure of the caster, extending the service life of the parking mechanism, ensuring the reliability of the caster, reducing the possibility of the base not being able to be reliably locked due to damage to the caster, reducing the risk of misoperation by the doctor, ensuring the treatment effect and surgical safety, reducing the possibility of causing secondary damage to the patient, and also ensuring the service life of the caster, reducing the maintenance cost; moreover, the parking mechanism has a simple structure, reduces the processing difficulty, and the brake shaft does not need to be set as a segmented structure, thereby improving the durability of the brake shaft, and further extending the service life of the parking mechanism.

[0029] The medical device provided by the present invention includes the above-mentioned parking mechanism, which avoids damage to the internal structure of the caster, prolongs the service life of the medical device, ensures the reliability of the caster, reduces the possibility of the base not being able to be reliably locked due to damage to the caster, reduces the risk of doctor's misoperation, ensures the treatment effect and surgical safety, reduces the possibility of secondary injury to the patient, and also ensures the service life of the caster and reduces maintenance costs; moreover, the medical device has a simple structure and reduces the difficulty of processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a structural schematic diagram of a parking mechanism provided by an embodiment of the present invention;

[0031] Figure 2 is a structural schematic diagram of a parking mechanism provided by an embodiment of the present invention with the base hidden;

[0032] Figure 3 is a cross-sectional view of a parking mechanism provided by an embodiment of the present invention;

[0033] Figure 4 is a partial structural schematic diagram of a parking mechanism provided by an embodiment of the present invention;

[0034] Figure 5 is a schematic structural diagram of a connecting member and a swing rod provided in an embodiment of the present invention;

[0035] Figure 6 is a schematic structural diagram of a locking assembly and a mounting frame provided by an embodiment of the present invention;

[0036] Figure 7 It is a schematic diagram of the structure of the guide groove provided in an embodiment of the present invention.

[0037] In the figure:

[0038] 1. Base; 11. Casters; 111. Locking hole; 12. Support;

[0039] 2. brake assembly; 21. brake shaft; 211. cylindrical section; 212. hexagonal section; 22. transmission part; 221. roller;

[0040] 3. pedal assembly; 31. connecting member; 311. sliding member; 312. reinforcing member; 313. groove; 314. strip hole; 315. abutting member; 3151. inclined surface; 32. pedal; 30. contact surface; 301. first face; 302. second face;

[0041] 4. Locking assembly; 41. Rocker; 411. Rod; 412. Sliding column; 413. Rotating wheel; 42. Guide slideway; 43. Rotating shaft; 44. Rocker reset member;

[0042] 5. Guide assembly; 51. Guide rail; 52. Slider;

[0043] 6. Guide groove; 61. Guide block; 611. First surface; 612. Second surface; 613. Third surface; 614. Fourth surface; 615. Fifth surface; 616. Sixth surface; 617. Limiting groove; 62. Stop structure;

[0044] 7. Pedal reset member; 8. Mounting frame; 9. Brake shaft reset member. DETAILED DESCRIPTION

[0045] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0046] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0048] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0049] This embodiment provides a medical device. In this embodiment, the medical device is a surgical robot, which includes a doctor's console and a patient surgical end.

[0050] Further, the doctor console includes a parking mechanism having a parking state and a moving state. When the parking mechanism is in the parking state, the parking mechanism can fix the position of the doctor console, and when the parking mechanism is in the moving state, the doctor console can move, so as to adjust the position of the doctor console according to needs.

[0051] During the operation, the parking mechanism is in the parking state to prevent the doctor's console from moving, so that the operator can control the patient's surgical end to perform the operation on the patient by manipulating the doctor's console. When the operation is completed, the parking mechanism switches to the moving state.

[0052] In other embodiments, the surgical end of the patient may also include the above-mentioned parking mechanism; or, the medical device may also be other devices, which are not limited here.

[0053] Among them, other structures of the surgical robot can refer to the existing technology and will not be elaborated here.

[0054] This embodiment also provides a parking mechanism. Specifically, Figure 1-Figure 7As shown, the parking mechanism includes a base 1, a brake assembly 2 and a pedal assembly 3. The bottom of the base 1 is rotatably provided with a caster 11, and the caster 11 has a locking state and a universal state. The brake assembly 2 includes a brake shaft 21 and a transmission member 22, the axis of the brake shaft 21 extends along a first direction, the brake shaft 21 is coaxially penetrated in a locking hole 111 of the caster 11, the brake shaft 21 can rotate around its own axis, so that the caster 11 can switch between a locking state and a universal state, one end of the transmission member 22 is fixedly connected to the brake shaft 21, and the transmission member 22 is arranged at an angle to the brake shaft 21; the pedal assembly 3 can slide along a second direction perpendicular to the first direction, the pedal assembly 3 has a first position, a second position and a third position, the first position, the second position and the third position are arranged in sequence along the second direction, when the pedal assembly 3 is in the first position, the caster 11 is in a universal state, and when the pedal assembly 3 is in the second position, the caster 11 is in a locked state. After the pedal assembly 3 slides from the first position to the third position, it can return to and lock in the second position. After the pedal assembly 3 slides from the second position to the third position, it can return to and lock in the first position. A contact surface 30 is provided on the side of the pedal assembly 3 facing the transmission member 22. The end of the transmission member 22 away from the brake shaft 21 is used to contact the contact surface 30. The contact surface 30 includes a first surface 301 and a second surface 302. The first surface 301 is connected to the second surface 302. The first surface 301 and the second surface 302 are both arranged parallel to the first direction. The first surface 301 is arranged parallel to the second direction, and the second surface 302 is arranged inclined to the second direction. When the pedal assembly 3 moves between the first position and the second position, the end of the transmission member 22 contacts the second surface 302. When the pedal assembly 3 is in the second position, the end of the transmission member 22 contacts the connection between the first surface 301 and the second surface 302. When the pedal assembly 3 moves between the second position and the third position, the end of the transmission member 22 contacts the first surface 301.

[0055] When the caster 11 is in a locked state, the parking mechanism is in a parking state, and when the caster 11 is in a universal state, the parking mechanism is in a moving state.

[0056] The parking mechanism provided in this embodiment includes a base 1, a brake assembly 2 and a pedal assembly 3. When the pedal assembly 3 moves between the first position and the second position, the end of the transmission member 22 contacts the second surface 302, which can convert the linear movement of the pedal assembly 3 along the second direction into the rotation of the brake shaft 21, so that the caster 11 switches between the locked state and the universal state; when the pedal assembly 3 moves between the second position and the third position, the end of the transmission member 22 contacts the first surface 301, and the brake shaft 21 does not continue to rotate. The parking mechanism provided in the present embodiment has the following characteristics: after the caster 11 is switched to the locked state, the brake shaft 21 will not continue to rotate with the further movement of the pedal assembly 3, thereby avoiding damage to the internal structure of the caster 11, extending the service life of the parking mechanism, ensuring the reliability of the caster 11, reducing the possibility that the base 1 cannot be reliably locked due to damage to the caster 11, reducing the risk of doctor's misoperation, ensuring the treatment effect and surgical safety, reducing the possibility of causing secondary injury to the patient, and also ensuring the service life of the caster 11 and reducing maintenance costs; moreover, the parking mechanism has a simple structure, which reduces the difficulty of processing, and the brake shaft 21 does not need to be set as a segmented structure, which improves the durability of the brake shaft 21 and further extends the service life of the parking mechanism.

[0057] The medical device provided in this embodiment includes the above-mentioned parking mechanism, which avoids damage to the internal structure of the caster 11, extends the service life of the parking mechanism, ensures the reliability of the caster 11, reduces the possibility that the base 1 cannot be reliably locked due to damage to the caster 11, reduces the risk of doctor's misoperation, ensures the treatment effect and surgical safety, reduces the possibility of secondary injury to the patient, and also ensures the service life of the caster 11 and reduces maintenance costs; moreover, the parking mechanism has a simple structure, which reduces the difficulty of processing, and the brake shaft 21 does not need to be set as a segmented structure, which improves the durability of the brake shaft 21 and further extends the service life of the parking mechanism.

[0058] In this embodiment, the first direction is set horizontally, and the second direction is the vertical direction. The first position, the second position and the third position are arranged in sequence from top to bottom. Further, the first direction is the front-to-back direction of the base 1. It should be noted that the front-to-back and left-to-right directions mentioned in this embodiment are the directions of the parking mechanism in the use state. When the operator is facing the base 1, the end of the base 1 close to the operator is the front end, and the end of the base 1 away from the operator is the rear end. The left-to-right direction of the operator is the left-to-right direction of the base 1.

[0059] That is, the second surface 302 is connected to the bottom end of the first surface 301. The first surface 301 is vertically arranged, the second surface 302 is inclined in the vertical direction and the left-right direction, and the second surface 302 is parallel to the front-back direction. In this embodiment, the bottom of the second surface 302 is inclined toward the side away from the brake shaft 21.

[0060] In other embodiments, the first direction may also be the left-right direction of the base 1 , which is not limited here.

[0061] Specifically, two groups of casters 11 are provided on the base 1, and the two groups of casters 11 are arranged at intervals along the left and right directions of the base 1, and each group of casters 11 includes two casters 11 arranged at intervals along the front and rear directions. The two ends of the same brake shaft 21 are respectively connected to the two casters 11 in the same group. Each brake shaft 21 corresponds to a parking mechanism, that is, two groups of brake assemblies 2 and two groups of pedal assemblies 3 are provided on the base 1.

[0062] Furthermore, the caster 11 is a center control wheel or a universal wheel, and its structure is prior art and will not be described in detail here. A locking hole 111 is provided on the caster 11, and the cross section of the locking hole 111 is hexagonal. The brake shaft 21 includes a cylindrical section 211 and a hexagonal section 212. The axis of the cylindrical section 211 extends in the front-to-back direction. The two ends of the cylindrical section 211 are coaxially connected to the two hexagonal sections 212, respectively, and the hexagonal section 212 is inserted into the locking hole 111 of the corresponding caster 11.

[0063] In this embodiment, the cylindrical section 211 is connected to the transmission member 22, and the transmission member 22 is arranged perpendicular to the cylindrical section 211. Specifically, the transmission member 22 is rod-shaped, one end of the transmission member 22 along the length direction is fixedly connected to the cylindrical section 211, and the other end of the transmission member 22 is used to contact the contact surface 30.

[0064] In this embodiment, the brake shaft 21 is rotatably connected to the base 1. A support member 12 is fixedly provided on the base 1, and a bearing is provided on the support member 12. The brake shaft 21 is fixedly penetrated through the bearing, so that the brake shaft 21 is rotatably connected to the support member 12 through the bearing. A plurality of support members 12 are provided at intervals along the axial direction of the brake shaft 21. Figure 2 In the figure, only one support member 12 is shown.

[0065] Preferably, a brake shaft reset member 9 is provided on the brake shaft 21. When the pedal assembly 3 is in the first position, the transmission member 22 is in the ready position. The brake shaft reset member 9 is used to rotate the brake shaft 21 until the transmission member 22 returns to the ready position. The brake shaft reset member 9 is a torsion spring, one free end of which is fixedly connected to the brake shaft 21, and the other free end of which is fixedly connected to the support member 12.

[0066] Preferably, the pedal assembly 3 includes a pedal 32 and a connecting member 31, the connecting member 31 is vertically arranged, the pedal 32 is horizontally arranged, and the pedal 32 is connected to the top of the connecting member 31. The operator can move the pedal assembly 3 downward in the vertical direction, that is, move from the first position to the third position, by stepping on the pedal 32, thereby improving the convenience of operation. Specifically, the contact surface 30 is arranged on the connecting member 31.

[0067] In this embodiment, the connecting member 31 is located on one side of the brake shaft 21 along the left-right direction.

[0068] Furthermore, the parking mechanism also includes a pedal reset member 7, which can restore the pedal assembly 3 from the third position to the first position, thereby realizing automatic reset of the pedal assembly 3 and further improving the convenience of operation.

[0069] In this embodiment, the pedal reset member 7 is a spring, which is arranged at the bottom of the connecting member 31, one end of the pedal reset member 7 abuts against the connecting member 31, and the other end of the pedal reset member 7 is connected to the base 1. When the pedal 32 is stepped on to make the pedal assembly 3 descend, the pedal reset member 7 is compressed, and the pedal reset member 7 can make the pedal assembly 3 rise in the vertical direction, that is, move from the third position to the first position.

[0070] Preferably, a groove 313 is formed on one side of the pedal assembly 3 facing the transmission member 22, and the bottom surface of the groove 313 forms the first surface 301. The above arrangement improves the compactness of the parking mechanism, reduces the occupied space of the parking mechanism and the medical device, and is conducive to miniaturization of the medical device.

[0071] In this embodiment, the groove 313 is formed on a side of the connecting member 31 facing the brake shaft 21 .

[0072] Furthermore, if Figure 3 and Figure 4 As shown, the pedal assembly 3 includes a sliding member 311 and a reinforcing member 312. The reinforcing member 312 is embedded in the sliding member 311, and the surface of the reinforcing member 312 is exposed to the sliding member 311. The surface of the reinforcing member 312 forms a contact surface 30, and the hardness of the reinforcing member 312 is greater than the hardness of the sliding member 311. The above arrangement enables the transmission member 22 to contact the reinforcing member 312 with greater hardness, thereby improving the durability of the connecting member 31, reducing maintenance costs, extending the service life of the parking mechanism, and reducing the possibility of damage to the connecting member 31 during use, thereby improving the reliability of the connecting member 31 during use, ensuring that the base 1 can be reliably locked during surgery, and improving the safety of surgery.

[0073] In this embodiment, the sliding member 311 is made of aluminum, and the reinforcing member 312 is made of steel. In other embodiments, the sliding member 311 and the reinforcing member 312 may also be made of other materials, as long as the hardness of the sliding member 311 is less than the hardness of the reinforcing member 312, which is not limited here.

[0074] In this embodiment, the outer surface of the reinforcement member 312 facing the brake shaft 21 forms the first surface 301 , and the outer surface of the bottom of the reinforcement member 312 (ie, the bottom surface) forms the second surface 302 .

[0075] The width of the reinforcement member 312 is the same as the width of the groove 313. It can be understood that the outer surface of the reinforcement member 312 facing the brake shaft 21 is in the same plane as the bottom surface of the groove 313. That is, the sliding member 311 is provided with a groove structure with a depth greater than the groove 313, the reinforcement member 312 is placed in the groove structure, and the surface of the reinforcement member 312 and the groove side wall of the groove structure form the groove 313. The bottom of the groove structure passes through the bottom of the connecting member 31 downward, so that the bottom surface of the reinforcement member 312 is exposed, thereby preventing the connecting member 31 from hindering the movement of the transmission member 22.

[0076] In other embodiments, the width of the reinforcing member 312 may be greater than the width of the groove 313 , that is, the groove 313 is formed on the reinforcing member 312 .

[0077] Furthermore, the reinforcing member 312 is detachably connected to the sliding member 311. The above arrangement facilitates replacement of the reinforcing member 312 when it is damaged, further prolongs the service life of the connecting member 31, reduces maintenance costs, ensures the reliability of the parking mechanism during surgery, and helps improve the safety of surgery; it is also convenient to replace the reinforcing member 312 with the second face 302 with different inclination angles according to needs, expands the scope of application, improves practicality, and also reduces the requirements for the processing and assembly accuracy of each component of the parking mechanism, and can process a suitable reinforcing member 312 according to the processing or assembly error, which is convenient for processing and assembly.

[0078] In this embodiment, the reinforcing member 312 and the sliding member 311 are detachably connected by screws.

[0079] Preferably, the end of the transmission member 22 is rotatably connected with a roller 221, and the roller 221 is in rolling contact with the contact surface 30. By providing the roller 221, the friction generated between the transmission member 22 and the contact surface 30 is reduced, the possibility of damage to the transmission member 22 or the connecting member 31 is reduced, the service life of the parking mechanism is extended, and the reliability of the connecting member 31 during use is improved, thereby ensuring the safety of the operation.

[0080] As a preferred solution, Figure 3-Figure 7As shown, the parking mechanism also includes a locking assembly 4, which includes a swing rod 41 and a guide slide 42, and the guide slide 42 is in a closed ring shape. One end of the swing rod 41 is rotatably connected to the pedal assembly 3 through a rotating shaft 43, and the rotating shaft 43 is arranged perpendicular to the second direction. A guide groove 6 is provided on the base 1, and the swing rod 41 and the guide groove 6 are arranged along the axial direction of the rotating shaft 43. A guide block 61 is provided in the middle of the guide groove 6, and the side wall of the guide block 61 and the inner wall of the guide groove 6 are circumferentially arranged to form a guide slide 42. The other end of the swing rod 41 is placed in the guide slide 42 and can slide unidirectionally in the guide slide 42 along the first circumferential direction. The side wall of the guide block 61 includes a first surface 611 and a second surface 612 arranged obliquely to the second direction. The first surface 611 and the second surface 612 are connected at an angle, so that the connection between the first surface 611 and the second surface 612 forms a corner structure. When the pedal assembly 3 is in the first position, the rocker arm 41 is in the initial position; when the rocker arm 41 is in the initial position, the end of the rocker arm 41 away from the rotating shaft 43 is arranged opposite to the second surface 612 along the second direction, so that when the pedal assembly 3 moves between the first position and the second position, the end of the rocker arm 41 slides along the second surface 612 to realize unidirectional sliding of the end of the rocker arm 41; a limiting groove 617 is provided on the side wall of one end of the guide block 61 opposite to the corner structure, and the end of the rocker arm 41 can move into or out of the limiting groove 617. When the pedal assembly 3 is in the second position, the end of the rocker arm 41 is placed in the limiting groove 617.

[0081] When the rocker arm 41 is in the initial position, the end of the rocker arm 41 is arranged opposite to the second surface 612, so that the end of the rocker arm 41 is located on one side of the corner structure. When the pedal assembly 3 moves along the second direction, the stopper of the corner structure ensures that the end of the rocker arm 41 can only slide along the second surface 612, thereby ensuring that the rocker arm 41 can only move along the first circumferential direction in the guide slide 42, thereby improving the reliability of the above-mentioned "after the pedal assembly 3 slides from the first position to the third position, it can return to and lock in the second position, and after the pedal assembly 3 slides from the second position to the third position, it can return to and lock in the first position" process, thereby improving the reliability of the switching of the parking mechanism between the parking state and the moving state, reducing the possibility of the base 1 moving during the operation, and improving the safety of the operation; at the same time, through the setting of the limit groove 617, on the premise that the pedal assembly 3 can be locked in the second position, the structure of the locking assembly 4 is simplified, the convenience of production and assembly is improved, and it is conducive to reducing production costs.

[0082] In the prior art, some parking mechanisms also use a heart-shaped groove structure to achieve a locking function, but the heart-shaped groove is composed of multiple groove structures with different depths, resulting in a thicker structure of the component for opening the heart-shaped groove, which increases the volume of the parking mechanism. This embodiment achieves unidirectional sliding of the swing rod 41 by setting the position between the corner structure and the swing rod 41 in the initial position, simplifies the processing process of the guide groove 6, and also avoids increasing the thickness of the component for opening the guide groove 6 on the base 1, which is conducive to reducing the volume of the above-mentioned component, and thus reducing the occupied space of the parking mechanism.

[0083] In this embodiment, the axis of the rotating shaft 43 is arranged along the left-right direction of the base 1, the swing arm 41 is fixedly connected to the rotating shaft 43, and the rotating shaft 43 is rotatably connected to the connecting member 31. Among them, the first surface 611 can be arranged along the second direction, and the first surface 611 can also be arranged inclined to the second direction, which is not limited here. In this embodiment, the first surface 611 and the second surface 612 are arranged to be inclined downward at one end away from each other.

[0084] Specifically, a mounting frame 8 is fixedly arranged on the base 1, and a slotted surface is arranged on the mounting frame 8, and the slotted surface is arranged along the vertical direction and parallel to the first direction. A guide groove 6 is arranged on the slotted surface, and a guide block 61 is fixedly arranged on the mounting frame 8. In this embodiment, the support member 12 is fixedly arranged on the mounting frame 8. The slotted surface on the mounting frame 8 is located on the side of the connecting member 31 opposite to the brake shaft 21.

[0085] The guide block 61 is heart-shaped, the corner structure is arranged at the top of the guide block 61, and the corner structure is arranged to protrude upward, and the limit groove 617 is arranged at the bottom of the guide block 61. When the swing rod 41 is in the initial position, the end of the swing rod 41 away from the rotation axis 43 is located on one side of the corner structure along the first direction. Figure 7 , the first circling direction is counterclockwise, and the first circling direction is indicated by a dotted line. When the swing rod 41 is in the initial position, the corner structure is located on the right side of the end of the swing rod 41. In this embodiment, when the swing rod 41 is in the initial position, the end of the swing rod 41 away from the rotation axis 43 is located above the second surface 612, and the end of the swing rod 41 may contact the second surface 612, or the end of the swing rod 41 may be spaced apart from the second surface 612 in the vertical direction, which is not limited here.

[0086] Further, the side wall of the guide block 61 includes a first surface 611, a second surface 612, a third surface 613, a fourth surface 614, a fifth surface 615 and a sixth surface 616. The first surface 611, the second surface 612, the third surface 613, the fourth surface 614, the fifth surface 615 and the sixth surface 616 are all parallel to the left and right directions of the base 1. The first surface 611, the second surface 612, the third surface 613, the fourth surface 614, the fifth surface 615 and the sixth surface 616 are connected end to end in sequence. The third surface 613 and the fourth surface 614 are connected obliquely to form a first distal corner of the heart-shaped structure, and the fifth surface 615 and the sixth surface 616 are connected obliquely to form a second distal corner of the heart-shaped structure. The first distal corner and the second distal corner are protruding toward the bottom of the guide block 61, so that the fourth surface 614 and the fifth surface 615 are connected to form a limiting groove 617 that is recessed toward the center of the guide block 61. The third surface 613 and the fifth surface 615 are substantially vertically arranged. The angles formed by the first distal end sharp angle and the second distal end sharp angle are both acute angles.

[0087] When the ends of the swing rod 41 are located at the first distal sharp corner and the second distal sharp corner, the pedal assembly 3 is in the third position, that is, the heights of the first distal sharp corner and the second distal sharp corner are the same.

[0088] In the process described in the foregoing that "the pedal assembly 3 can return to and be locked in the second position after sliding from the first position to the third position", that is, the process of the parking mechanism switching from the mobile state to the parking state, the end of the rocker arm 41 slides along the second surface 612 → the third surface 613 → the fourth surface 614 in sequence, and the end of the rocker arm 41 finally stops in the limit groove 617; in the process described in the foregoing that "the pedal assembly 3 can return to and be locked in the first position after sliding from the second position to the third position", that is, the process of the parking mechanism switching from the parking state to the mobile state, the end of the rocker arm 41 slides along the fifth surface 615 → the sixth surface 616 → the first surface 611 → the second surface 612 in sequence, and the rocker arm 41 finally stops at the initial position.

[0089] Preferably, the swing rod 41 is L-shaped, and includes a rod 411 and a sliding column 412. When the swing rod 41 is in the initial position, the top end of the rod 411 is vertically connected to the rotating shaft 43. The axis of the sliding column 412 extends in the left-right direction of the base 1, the bottom end of the rod 411 is vertically connected to one end of the sliding column 412, and the other end of the sliding column 412 is placed in the guide slide 42 and can be guided and slid along the first circumferential direction.

[0090] Furthermore, a stop structure 62 is protruding on the side wall at the bottom of the guide groove 6. The stop structure 62 is arranged opposite to the limit groove 617. The height difference between the top of the stop structure 62 and the second distal sharp corner is smaller than the diameter of the sliding column 412, thereby preventing the sliding column 412 from passing directly between the stop structure 62 and the second distal sharp corner in the front-to-back direction after passing through the fourth surface 614, thereby ensuring that the sliding column 412 can be stopped by the fifth surface 615 and reliably moved into the limit groove 617, thereby ensuring that the parking mechanism is locked in the parking state, reducing the possibility that the base 1 cannot be reliably locked during surgery, and ensuring the safety of the surgery.

[0091] It can be understood that in order to ensure that the sliding column 412 slides smoothly in the guide slide 42, the minimum distance between the first distal sharp corner and the side wall of the stop structure 62 is not less than the diameter of the sliding column 412, and the minimum distance between the second distal sharp corner and the side wall of the stop structure 62 is not less than the diameter of the sliding column 412.

[0092] In some embodiments, a rotating wheel 413 is coaxially rotatably provided on the end of the sliding column 412, and the rotating wheel 413 is in rolling contact with the side wall of the guide block 61, thereby reducing the friction between the rocker arm 41 and the guide block 61, reducing the possibility of wear of the rocker arm 41 and the guide block 61, reducing maintenance costs, and ensuring that the parking mechanism switches smoothly between the parking state and the moving state, saving time for preoperative preparation and ensuring that medical equipment can be evacuated in time after the operation.

[0093] As a preferred solution, when the swing rod 41 is in the initial position, the swing rod 41 is arranged to be inclined to the second surface 612, and the end of the swing rod 41 away from the rotating shaft 43 is inclined toward the direction of the one-way sliding. Figure 7 In the figure, the swing rod 41 is in the initial position, and the vertical line of the second surface 612 is set as the dotted line L. The straight line L passes through the axis of the rotation shaft 43, and the end of the swing rod 41 away from the rotation shaft 43 is inclined toward the left side of the straight line L. The angle between the swing rod 41 and the second surface 612 is less than 90°.

[0094] The locking assembly 4 also includes a rocker reset member 44, which can reset the rocker 41 to an initial position. By providing the rocker reset member 44, the rocker 41 can be automatically reset to the initial position, simplifying the operation process.

[0095] It can be understood that when the end of the rocker arm 41 is located in the limiting groove 617, the rocker arm reset member 44 has an elastic force, which can ensure that after the end of the rocker arm 41 moves out of the limiting groove 617, it slides along the fifth surface 615 → the sixth surface 616 → the first surface 611 → the second surface 612 in the order.

[0096] Furthermore, the rocker arm reset member 44 is a torsion spring, which is sleeved on the rotating shaft 43, and one free end of the torsion spring is connected to the rocker arm 41. Specifically, the free end of the torsion spring is fixedly connected to the rotating shaft 43. A strip hole 314 is provided on the pedal assembly 3, and an abutment 315 is provided in the strip hole 314. The other free end of the torsion spring abuts against the abutment 315, and the abutment 315 can move along the strip hole 314 to adjust the angle between the rocker arm 41 in the initial position and the second surface 612. The above arrangement can adjust the angle between the rocker arm 41 in the initial position and the second surface 612 according to the actual angle between the second surface 612 and the rocker arm 41, reduce the processing accuracy requirements of the guide block 61, and can adjust the rocker arm 41 to a suitable angle according to the processing error, thereby ensuring the unidirectional sliding of the rocker arm 41.

[0097] It is understandable that when the swing rod 41 is in the initial position, the swing rod reset member 44 is in a natural state, that is, no elastic force is generated on the swing rod reset member 44. In this embodiment, the strip hole 314 is vertically arranged. In other embodiments, the strip hole 314 can also be arranged along other directions, which is not limited here.

[0098] In this embodiment, the bottom surface of the abutment member 315 is used to contact the torsion spring. When the swing arm 41 is in the initial position, the free end of the torsion spring used to abut the abutment member 315 is tilted, and the bottom surface of the abutment member 315 is set as an inclined surface 3151. When the swing arm 41 is in the initial position, the inclined surface 3151 is substantially parallel to the free end corresponding to the torsion spring, which increases the abutment area between the torsion spring and the abutment member 315, and also avoids damage to the torsion spring caused by the corner structure on the abutment member 315, thereby extending the service life of the parking mechanism.

[0099] As a preferred solution, the parking mechanism further includes a guide assembly 5. The guide assembly 5 includes a guide rail 51 and a slider 52. The guide rail 51 is connected to the base 1 and extends along the second direction. The slider 52 is connected to the treading assembly 3. The guide rail 51 and the slider 52 are slidably matched. The guide assembly 5 can guide the treading assembly 3, ensure that the treading assembly 3 can move in the vertical direction, ensure that the caster 11 can reliably switch between the locked state and the universal state, improve the reliability of the parking mechanism, reduce the possibility of the base 1 moving during the operation, and improve the safety of the operation.

[0100] In this embodiment, the guide rail 51 is fixedly connected to the mounting frame 8 , and the slider 52 is connected to the connecting member 31 .

[0101] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A parking mechanism, characterized in that: include: A base, rotatably provided with casters; A brake assembly, comprising a brake shaft and a transmission member, wherein the axis of the brake shaft extends along a first direction, the brake shaft is coaxially arranged in a locking hole of the caster, the brake shaft can rotate around its own axis to switch the caster between a locking state and a universal state, one end of the transmission member is fixedly connected to the brake shaft, and the transmission member is arranged at an angle to the brake shaft; A tread assembly is capable of sliding along a second direction perpendicular to the first direction, the tread assembly has a first position, a second position and a third position, the first position, the second position and the third position are arranged in sequence along the second direction, when the tread assembly is in the first position, the caster is in the universal state, when the tread assembly is in the second position, the caster is in a locked state, after the tread assembly slides from the first position to the third position, it can return to and be locked in the second position, and after the tread assembly slides from the second position to the third position, it can return to and be locked in the first position; A contact surface is provided on a side of the pedal assembly facing the transmission member, the contact surface includes a first surface and a second surface, the first surface is connected to the second surface, the first surface and the second surface are both arranged parallel to the first direction, the first surface is arranged parallel to the second direction, and the second surface is arranged inclined to the second direction; The pedal assembly is configured such that when the other end of the transmission member moves between the first position and the second position, the other end of the transmission member contacts the second face portion; when the pedal assembly is configured such that when the other end of the transmission member is in the second position, the other end of the transmission member contacts the connection between the first face portion and the second face portion; and when the pedal assembly is configured such that when the other end of the transmission member moves between the second position and the third position, the other end of the transmission member contacts the first face portion.

2. The parking mechanism according to claim 1, characterized in that: A groove is formed on one side of the pedal assembly facing the transmission member, and the bottom surface of the groove forms the first surface portion.

3. The parking mechanism according to claim 1, characterized in that: The pedal assembly includes a sliding member and a reinforcing member, wherein the reinforcing member is embedded in the sliding member, and an outer surface of the reinforcing member is exposed to the sliding member, and the outer surface of the reinforcing member forms the contact surface, and the hardness of the reinforcing member is greater than the hardness of the sliding member.

4. The parking mechanism according to claim 3, characterized in that: The reinforcing member is detachably connected to the sliding member.

5. The parking mechanism according to claim 1, characterized in that: A roller is rotatably arranged at the end of the transmission member, and the roller is in rolling contact with the contact surface.

6. The parking mechanism according to any one of claims 1 to 5, characterized in that: The parking mechanism further includes a locking assembly, which includes a swing arm and an annular guide slideway, one end of the swing arm is rotatably connected to the pedal assembly via a rotating shaft, the rotating shaft is arranged perpendicular to the second direction, a guide groove is provided on the base, a guide block is arranged in the middle of the guide groove, the side wall of the guide block and the inner wall of the guide groove are arranged to form the guide slideway, and the other end of the swing arm can slide unidirectionally in the guide slideway; The side wall of the guide block includes a first surface and a second surface arranged obliquely to the second direction, the first surface and the second surface are connected at an angle to form a corner structure, and when the pedal assembly is configured to be in the first position, the swing arm is in an initial position; The swing rod is configured to be in the initial position, and the end of the swing rod away from the rotating shaft is arranged opposite to the second surface along the second direction, so that when the pedal assembly is configured to move between the first position and the second position, the end of the swing rod slides along the second surface to achieve unidirectional sliding of the end of the swing rod; A limiting groove is provided on the side wall of one end of the guide block opposite to the corner structure, and the end of the rocker arm can move into or out of the limiting groove. When the pedal assembly is configured to be in the second position, the end of the rocker arm is placed in the limiting groove.

7. The parking mechanism according to claim 6, characterized in that: The swing rod is configured such that when it is in the initial position, the swing rod is arranged obliquely to the second surface, and the end of the swing rod away from the rotation axis is inclined toward the direction of the one-way sliding; The locking assembly further comprises a rocker rod reset member, which can reset the rocker rod to the initial position.

8. The parking mechanism according to claim 7, characterized in that: The rocker arm reset member is a torsion spring, one free end of which is connected to the rocker arm, a strip hole is provided on the pedal assembly, an abutment member is provided in the strip hole, the other free end of the torsion spring abuts against the abutment member, and the abutment member can move along the strip hole to adjust the angle between the rocker arm in the initial position and the second surface.

9. The parking mechanism according to any one of claims 1 to 5, characterized in that: The parking mechanism further includes a guide assembly, the guide assembly includes a guide rail and a slider, the guide rail is connected to the base, the guide rail extends along the second direction, the slider is connected to the pedal assembly, and the guide rail and the slider are slidably matched; And / or, the parking mechanism further includes a pedal reset member, and the pedal reset member can restore the pedal assembly from the third position to the first position.

10. A medical device, characterized in that It comprises a parking mechanism as described in any one of claims 1 to 9.

Images