A connection mechanism and an anesthesia machine

Abstract

This utility model discloses a connecting mechanism and an anesthesia machine. The connecting mechanism includes a pedal, a connecting frame, a linkage assembly, and a braking component. The pedal is rotatably connected to the seat of the anesthesia machine around a first axis; the connecting frame is fixed to the pedal; the linkage assembly is rotatably connected to the connecting frame around a second axis; the braking component includes a transmission rod and a brake rod. The transmission rod is connected to the linkage assembly, one end of the brake rod is poweredly connected to the transmission rod, and the other end of the brake rod is adapted to connect to the brake assembly of the casters. By stepping on the pedal, the transmission rod can be driven to rotate around a third axis, so that the transmission rod can brake the casters on the seat through the brake rod. This utility model adopts a multi-axis rotational connection method, and the pedal can effectively brake the casters without a large swing angle, increasing the stability of the equipment.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, and in particular relates to a connecting mechanism and an anesthesia machine. Background Technology

[0002] In the clinical application of anesthesia machines, a braking device is often used to lock the casters on the base of the anesthesia machine to prevent accidental slippage.

[0003] In existing technologies, traditional braking devices typically include a brake pedal and a brake lever that acts on the casters. Medical staff press the pedal to rotate the brake lever, which in turn drives the caster braking assembly to lock the device. However, to ensure sufficient pedal travel, the pedal usually requires a large swing angle, resulting in a large installation space required for the entire braking device in the vertical direction. This forces an increase in the height of the anesthesia machine base, reducing the stability of the equipment. Utility Model Content

[0004] The technical problem to be solved by this utility model is that, in order to ensure the pedal stroke, the pedal usually needs a large swing angle, which leads to the need for a large installation space in the vertical direction of the entire braking device, which forces the height of the anesthesia machine base to increase and reduces the stability of the equipment. This utility model provides a connecting mechanism and anesthesia machine.

[0005] To address the aforementioned problems, one embodiment of this utility model provides a connecting mechanism, including a pedal, a connecting frame, a linkage assembly, and a braking component. The pedal is adapted to be rotatably connected to the seat of an anesthesia machine around a first axis.

[0006] The connecting frame is fixed to the pedal;

[0007] The linkage component is rotatably connected to the connecting frame around the second axis;

[0008] The braking component includes a transmission rod and a brake rod. The transmission rod is connected to the linkage assembly. One end of the brake rod is poweredly connected to the transmission rod, and the other end of the brake rod is adapted to be connected to the brake assembly of the caster.

[0009] By stepping on the pedal, the transmission rod can be rotated around the third axis, so that the transmission rod can brake the casters on the seat through the brake rod; wherein, the first axis, the second axis and the third axis are parallel to each other and are not coplanar.

[0010] Optionally, the linkage assembly includes a first linkage member and a second linkage member. One end of the first linkage member is rotatably connected to the connecting frame about the second axis, and the other end of the first linkage member is rotatably connected to the second linkage member about the fourth axis. The end of the second linkage member away from the first linkage member is fixedly connected to the transmission rod. The first axis, the second axis, the third axis, and the fourth axis are parallel to each other, and any three of them are not coplanar.

[0011] Optionally, the first linkage includes a first connecting piece and a second connecting piece, the connecting frame has a first side and a second side opposite to each other along the extension direction of the second axis, and the second linkage has a third side and a fourth side opposite to each other along the extension direction of the fourth axis, the first side and the third side correspond to each other, and the second side and the fourth side correspond to each other.

[0012] One end of the first connecting piece is rotatably connected to the first side of the connecting frame about the second axis, and the other end of the first connecting piece is rotatably connected to the third side of the second linkage about the fourth axis; one end of the second connecting piece is rotatably connected to the second side of the connecting frame about the second axis, and the other end of the second connecting piece is rotatably connected to the fourth side of the second linkage about the fourth axis.

[0013] Optionally, the second linkage member has an opening structure at the end away from the first linkage member. The opening structure extends through the second linkage member along the extension direction of the third axis. The side of the opening structure near the transmission rod has an opening, and the transmission rod is inserted into the opening structure.

[0014] Optionally, the end of the first linkage member closer to the connecting bracket is lower than the other end of the first linkage member; the end of the second linkage member closer to the first linkage member is lower than the other end of the second linkage member.

[0015] Optionally, the pedal is provided with a mounting base, and the connecting bracket is detachably connected to the mounting base;

[0016] The pedal is rotatably connected to the seat of the anesthesia machine via the mounting base about the first axis.

[0017] Optionally, the connecting frame includes a base plate, a first side plate, a second side plate, and a connecting shaft. The base plate is detachably connected to the pedal. The first side plate and the second side plate are both located on the side of the base plate opposite to the pedal. The first side plate and the second side plate are spaced apart on the base plate in the extension direction of the second axis. The connecting shaft is connected between the base plate and the second side plate. The linkage assembly is rotatably connected to the connecting shaft around the second axis.

[0018] Optionally, the brake lever includes a first sub-brake lever and a second sub-brake lever, and the transmission rod is poweredly connected between the first sub-brake lever and the second sub-brake lever. The end of the first sub-brake lever away from the transmission rod and the end of the second sub-brake lever away from the transmission rod are both adapted to be connected to the brake assembly of the caster.

[0019] The first sub-brake lever, the transmission lever, and the second sub-brake lever are coaxial; or, the first sub-brake lever is adapted to be rotatably connected to the base about a fifth axis, and the second sub-brake lever is adapted to be rotatably connected to the base about a sixth axis, wherein the third axis, the fifth axis, and the sixth axis are coplanar and intersect each other.

[0020] Optionally, the connecting mechanism further includes a universal joint;

[0021] The first sub-brake lever is connected to the transmission lever via the universal joint;

[0022] And / or, the second sub-brake lever is connected to the transmission lever via the universal joint.

[0023] According to the connecting mechanism provided in this embodiment of the utility model, when a medical staff member steps on the pedal, the pedal rotates around the first axis and is connected to the seat of the anesthesia machine. The pedal rotates around the first axis as the center. The connecting frame fixed on the pedal moves with the rotation of the pedal, and the movement of the connecting frame drives the linkage component connected to it to rotate around the second axis. The movement of the linkage component further causes the transmission rod connected to it to rotate around the third axis. The transmission rod is poweredly connected to the brake rod, so the rotation of the transmission rod is transmitted to the brake rod. The other end of the brake rod is connected to the brake assembly of the caster, which ultimately causes the brake rod to drive the brake assembly of the caster to work, thereby braking the caster on the seat and preventing the caster from rolling, thus fixing the anesthesia machine. The entire process transforms the stepping action of the pedal into a braking operation on the caster through the connection and relative rotation between different components. The design of the first axis, second axis and third axis being parallel and non-coplanar makes the transmission between the components more reasonable and efficient. Compared with traditional braking devices, this application adopts a multi-axis rotation connection method, which allows the pedal to effectively brake the caster without a large swing angle. This significantly reduces the vertical installation space required for the entire braking device (connecting mechanism), thus eliminating the need to increase the height of the anesthesia machine base. Lowering the base lowers the device's center of gravity, greatly improving stability. During clinical use, this effectively reduces the risk of accidental sliding or tipping, providing strong assurance for the safe and stable operation of the anesthesia machine. It also improves the convenience and safety of medical staff operating the anesthesia machine, while simultaneously enhancing the overall reliability of the medical equipment.

[0024] An anesthesia machine provided in this embodiment includes a main body, a seat, and the aforementioned connecting mechanism. The main body is arranged on the seat, the pedal is rotatably connected to the seat of the anesthesia machine around a first axis, casters are provided on the seat, the transmission rod is connected to the linkage assembly, one end of the brake rod is poweredly connected to the transmission rod, and the other end of the brake rod is connected to the brake assembly of the casters. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the connection mechanism provided in one embodiment of the present invention;

[0027] Figure 2 for Figure 1 Another structural diagram from a different perspective;

[0028] Figure 3 for Figure 2 Enlarged view of point A;

[0029] Figure 4 This is a schematic diagram showing the connection relationship between the base, casters, and connecting mechanism of an anesthesia machine provided in one embodiment of the present invention;

[0030] Figure 5 for Figure 4 A schematic diagram after removing part of the structure;

[0031] Figure 6 for Figure 5 Enlarged view of point B;

[0032] Figure 7 for Figure 5 A structural diagram from another perspective.

[0033] The reference numerals in the accompanying drawings are as follows:

[0034] 10. Seat; 20. Casters;

[0035] 1. Pedal;

[0036] 2. Connecting frame; 21. Base plate; 22. First side plate; 23. Second side plate; 24. Connecting shaft;

[0037] 3. Linkage component; 31. First linkage element; 311. First connecting piece; 312. Second connecting piece; 32. Second linkage element; 321. Opening structure;

[0038] 4. Braking components; 41. Transmission rod; 42. Brake lever; 421. First sub-brake lever; 422. Second sub-brake lever;

[0039] 5. Mounting bracket;

[0040] 6. Universal joint. Detailed Implementation

[0041] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0042] In the description of this utility model, it should be understood that the terms "longitudinal," "radial," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0043] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0044] like Figures 1 to 7 As shown, an embodiment of the present invention provides a connecting mechanism, including a pedal 1, a connecting frame 2, a linkage component 3 and a braking component 4. The pedal 1 is adapted to be rotatably connected to the seat 10 of the anesthesia machine around a first axis.

[0045] Connector 2 is fixed to pedal 1;

[0046] The linkage component 3 is rotatably connected to the connecting frame 2 around the second axis;

[0047] The braking component 4 includes a transmission rod 41 and a brake rod 42. The transmission rod 41 is connected to the linkage assembly 3. One end of the brake rod 42 is poweredly connected to the transmission rod 41, and the other end of the brake rod 42 is adapted to be connected to the brake assembly of the caster 20.

[0048] By stepping on pedal 1, the transmission rod 41 can be rotated around the third axis, so that the transmission rod 41 can brake the caster 20 on the seat 10 through the brake rod 42. The first axis, second axis and third axis are parallel and non-coplanar. When medical staff step on pedal 1, it rotates downward around the first axis, and the connecting frame 2 fixed to pedal 1 swings synchronously. The fulcrum of the second axis on the connecting frame 2 drives the linkage component 3 to shift, and the linkage component 3 then transmits the displacement to the transmission rod 41, which is coaxial with the third axis. The transmission rod 41 only needs to rotate slightly to pull the brake component of the caster 20 through the brake rod 42 to lock it. Since the first, second and third axes are parallel and non-coplanar, the entire kinematic chain is "folded" in the vertical direction. The original large-angle pedal 1 stroke is converted into the rotation of the transmission rod 41 by multiple levers and shafts, thus achieving reliable braking within a limited height space. By using a "folding" multi-axis linkage structure, the pedal stroke of pedal 1 is decomposed, amplified, and converted into the rotation of transmission rod 41 in three-dimensional space. This significantly reduces the vertical installation height of the braking device, allowing the anesthesia machine base to be designed lower and wider, lowering the overall center of gravity and significantly improving stability. Simultaneously, it reduces the required swing angle of pedal 1, making operation easier and avoiding the risk of tipping due to a higher base, thus balancing ease of use and equipment safety. Traditional braking devices are mostly "single-axis direct transmission" (e.g., pedal 1 swings around a single axis, directly driving the brake rod 42 to move). The effective stroke of brake rod 42 depends entirely on the swing angle of pedal 1—to allow brake rod 42 to clamp the caster 20, pedal 1 must swing significantly to "make up the stroke." In this design, three parallel and non-coplanar axes connect the pedal 1, connecting frame 2, linkage assembly 3, and transmission rod 41 in series to form a "multi-node lever system." When the pedal 1 swings at a small angle around the first axis, the connecting frame 2, fixed to the pedal 1, moves synchronously with the pedal 1. The small-range movement of the connecting frame 2 can create a "lever arm difference" through the linkage assembly 3. When the linkage assembly 3 rotates around the second axis, the end connected to the transmission rod 41 will generate a "linear displacement" larger than the swing amplitude of the pedal 1 (similar to the principle that "the displacement at the end of the longer lever arm is greater than that at the end of the shorter lever arm" in a lever principle). Subsequently, the linkage assembly 3 drives the transmission rod 41 to rotate around the third axis, further amplifying the rotational displacement of the transmission rod 41. Ultimately, the "effective displacement" transmitted by the transmission rod 41 to the brake assembly of the caster 20 through the brake rod 42 is much greater than the displacement corresponding to the small-angle swing of the pedal 1 itself. That is, through the spatial layout of the three axes, this application amplifies the "small-angle swing" of the pedal 1 step by step by the multi-node lever, ultimately converting it into the "sufficient braking stroke" required by the brake rod 42, without requiring the pedal 1 to directly compensate for the displacement through a large-angle swing.Meanwhile, all three axes are fixed and parallel. Through a pre-designed spatial layout (such as setting the second and third axes to the lower side and the front side of the first axis respectively), the movement paths of pedal 1, connecting frame 2, linkage component 3, and transmission rod 41 are "layered" in the vertical direction, avoiding pipes, circuits, and other components in the base. There is no need to increase the swing angle of pedal 1 to avoid interference. At the same time, the "parallel" axis direction ensures that the force transmission direction is consistent when each component rotates, reducing force loss during movement. Even if the swing angle of pedal 1 is small, the force and displacement transmitted to brake rod 42 can be accurately applied to the brake assembly of caster 20, ensuring effective braking.

[0049] like Figure 1 and Figure 2 As shown, in one embodiment, the linkage assembly 3 includes a first linkage member 31 and a second linkage member 32. One end of the first linkage member 31 is rotatably connected to the connecting frame 2 around a second axis, and the other end of the first linkage member 31 is rotatably connected to the second linkage member 32 around a fourth axis. The end of the second linkage member 32 away from the first linkage member 31 is fixedly connected to the transmission rod 41. The first axis, second axis, third axis, and fourth axis are parallel to each other, and any three of them are not coplanar. By setting the linkage assembly 3 as two rotatably connected linkage members, the motion transmission efficiency is further amplified. Even a small angle of pedal 1 can be precisely converted into the required stroke of the brake lever 42 through the cooperation of multiple linkage members and multiple parallel non-coplanar axes, making braking more effortless. Furthermore, the staggered layout of the four axes allows for more flexible avoidance of internal components of the base, compressing vertical space requirements, further reducing the base height, and improving equipment stability.

[0050] like Figure 2 and Figure 3 As shown, in one embodiment, the first linkage 31 includes a first connecting piece 311 and a second connecting piece 312. The connecting frame 2 has a first side and a second side opposite to each other along the extension direction of the second axis. The second linkage 32 has a third side and a fourth side opposite to each other along the extension direction of the fourth axis. The first side and the third side correspond to each other, and the second side and the fourth side correspond to each other.

[0051] One end of the first connecting piece 311 is rotatably connected to the first side of the connecting frame 2 around the second axis, and the other end of the first connecting piece 311 is rotatably connected to the third side of the second linkage member 32 around the fourth axis; one end of the second connecting piece 312 is rotatably connected to the second side of the connecting frame 2 around the second axis, and the other end of the second connecting piece 312 is rotatably connected to the fourth side of the second linkage member 32 around the fourth axis. The connecting frame 2 and the second linkage member 32 are subjected to symmetrical forces on both sides, avoiding unilateral displacement of the components during linkage, reducing transmission losses, and making braking smoother.

[0052] like Figure 3As shown, in one embodiment, the end of the second linkage 32 away from the first linkage 31 is provided with an opening structure 321. The opening structure 321 extends through the second linkage 32 along the extension direction of the third axis. The side of the opening structure 321 near the transmission rod 41 is provided with an opening, and the transmission rod 41 is inserted into the opening structure 321. The opening structure 321 is designed as an open-type insertion device, which facilitates the quick assembly and subsequent maintenance of the transmission rod 41 and reduces the difficulty of disassembly and assembly.

[0053] like Figure 2 and Figure 3 As shown, in one embodiment, the end of the first linkage 31 near the connecting frame 2 is lower than the other end of the first linkage 31; the end of the second linkage 32 near the first linkage 31 is lower than the other end of the second linkage 32. This inclined layout creates a "low-position input, high-position output" force transmission path, amplifying the torque of the pedal 1 and allowing for easier driving of the transmission rod 41 with smaller pedal angles, thus improving the convenience of braking operation. Simultaneously, it avoids low-position components within the base, further compressing the vertical installation space and helping to lower the center of gravity of the anesthesia machine.

[0054] like Figure 2 and Figure 3 As shown, in one embodiment, the pedal 1 is provided with a mounting base 5, and the connecting bracket 2 is detachably connected to the mounting base 5;

[0055] The pedal 1 is rotatably connected to the seat 10 of the anesthesia machine via the mounting base 5 around the first axis.

[0056] In one embodiment, the connecting frame 2 includes a base plate 21, a first side plate 22, a second side plate 23, and a connecting shaft 24. The base plate 21 is detachably connected to the pedal 1. The first side plate 22 and the second side plate 23 are both located on the side of the base plate 21 away from the pedal 1. The first side plate 22 and the second side plate 23 are spaced apart on the base plate 21 in the extension direction of the second axis. The connecting shaft 24 is connected between the base plate 21 and the second side plate 23. The linkage assembly 3 is rotatably connected to the connecting shaft 24 around the second axis.

[0057] like Figure 2 As shown, in one embodiment, the brake lever 42 includes a first sub-brake lever 421 and a second sub-brake lever 422, and the transmission rod 41 is poweredly connected between the first sub-brake lever 421 and the second sub-brake lever 422. The end of the first sub-brake lever 421 away from the transmission rod 41 and the end of the second sub-brake lever 422 away from the transmission rod 41 are both adapted to be connected to the brake assembly of the caster 20.

[0058] The first sub-brake lever 421, the transmission lever 41, and the second sub-brake lever 422 are coaxial; or, the first sub-brake lever 421 is adapted to be rotatably connected to the base 10 about the fifth axis, and the second sub-brake lever 422 is adapted to be rotatably connected to the base 10 about the sixth axis, wherein the third axis, the fifth axis, and the sixth axis are coplanar and intersect each other. In this embodiment, the extension direction of the third axis is as follows: Figure 2 In the M direction, the extension direction of the fifth axis is attached. Figure 2 In the N direction, the extension direction of the sixth axis is attached. Figure 2 In the L direction. When the first sub-brake lever 421, transmission lever 41 and the second sub-brake lever 422 are coaxial, the first sub-brake lever 421, transmission lever 41 and the second sub-brake lever 422 can be integrally formed, adapting to the layout of symmetrical casters 20. The structure that rotates around the fifth and sixth axes and whose three axes intersect in the same plane can flexibly adapt to the position of asymmetrical casters 20.

[0059] like Figure 2 and Figure 6 As shown, in one embodiment, the connecting mechanism further includes a universal joint 6;

[0060] The first sub-brake lever 421 is connected to the transmission lever 41 via a universal joint 6;

[0061] And / or, the second sub-brake lever 422 is connected to the transmission rod 41 via a universal joint 6. Adding a universal joint 6 between the first sub-brake lever 421, the second sub-brake lever 422, and the transmission rod 41 effectively compensates for installation deviations and angular offsets between components, avoids stress concentration and wear caused by rigid connections, and extends component life. Simultaneously, it adapts to the dynamic position changes of each component during braking, ensuring smooth and uninterrupted power transmission and reliable braking.

[0062] According to the connecting mechanism provided in this embodiment of the present invention, when a medical staff member steps on the pedal 1, the pedal 1 rotates around the first axis and is connected to the seat 10 of the anesthesia machine. The pedal 1 rotates around the first axis. The connecting frame 2 fixed on the pedal 1 moves with the rotation of the pedal 1. The movement of the connecting frame 2 drives the linkage component 3, which rotates around the second axis and is connected to it, to move. The movement of the linkage component 3 further causes the transmission rod 41 connected to it to rotate around the third axis. The transmission rod 41 is poweredly connected to the brake rod 42, so the rotation of the transmission rod 41 is transmitted to the brake rod 42. The other end of the brake rod 42 is connected to the brake assembly of the caster 20, which ultimately causes the brake rod 42 to drive the brake assembly of the caster 20 to work, thereby braking the caster 20 on the seat 10, preventing the caster 20 from rolling, and thus fixing the anesthesia machine. The entire process transforms the stepping action of the pedal 1 into a braking operation on the caster 20 through the connection and relative rotation between different components. The design of the first axis, the second axis, and the third axis being parallel and non-coplanar makes the transmission between the components more reasonable and efficient. Compared to traditional braking devices, this application employs a multi-axis rotation connection method, allowing the pedal 1 to effectively brake the caster 20 without requiring a large swing angle. This significantly reduces the vertical installation space required for the entire braking device (connection mechanism), thus eliminating the need to increase the height of the anesthesia machine base. Lowering the base height lowers the device's center of gravity, greatly improving stability. During clinical use, this effectively reduces the risk of accidental slippage or tipping, providing strong protection for the safe and stable operation of the anesthesia machine. It also improves the convenience and safety of medical personnel operating the anesthesia machine and enhances the overall reliability of the medical equipment.

[0063] like Figures 4-7As shown, this utility model embodiment also provides an anesthesia machine, including a main body, a seat 10, and a connection mechanism as described in the above embodiment. The main body is arranged on the seat 10, and the pedal 1 is rotatably connected to the seat 10 of the anesthesia machine around a first axis. Casters 20 are provided on the seat 10. A transmission rod 41 is connected to a linkage assembly 3, one end of a brake rod 42 is poweredly connected to the transmission rod 41, and the other end of the brake rod 42 is connected to the brake assembly of the caster 20. By integrating the above-mentioned connection mechanism, this anesthesia machine avoids the problem of increased seat height caused by traditional braking devices, lowers the center of gravity of the equipment to improve overall stability, and allows medical staff to conveniently brake by stepping on the pedal 1, thus optimizing the operating experience. The casters 20 configured on the anesthesia machine seat 10 in this embodiment of the invention adopt existing mature structures (such as Tende casters 20). The braking principle and connection relationship between the brake lever 42 and the casters 20 have been described in detail in existing published patents (such as CN108583154B, CN220220275U, CN219295493U, CN216280109U, etc.), and their technical solutions are well known to those skilled in the art. This application merely applies the aforementioned existing connection method between the brake lever 42 and the casters 20 to its own structure without making any improvements to the connection relationship between the two. Specifically, this application can achieve braking using the following existing connection method: One implementation is: the brake lever 42 is set as a hexagonal brake lever 42, and the cam of the caster 20 brake assembly is driven to rotate through the hexagonal brake lever 42, thereby achieving braking of the caster 20 (wherein, the brake assembly of this application is a higher-level concept, for example, the brake assembly of this application corresponds to the lifting device and locking mechanism of CN108583154B, the brake lever 42 of this application is connected to the cam of the lifting device of the caster 20 disclosed in CN108583154B, and the cam is rotated from the first extreme position to the second extreme position through the brake lever 42. During this period, the top block is driven to move down by the cam and drives the shift drive lever body to move down synchronously, driving the locking bar to embed between the adjacent positioning blocks of the spring sheet to achieve swing locking; the shift drive lever body continues to move down and will also press down the spring sheet, so that the brake block on its brake surface is embedded in the wheel body, and finally the rotation locking of the caster 20 is completed). Another implementation method is to install an abutment block on the brake lever 42, and use the action of the abutment block on the caster 20 when the brake lever 42 rotates to brake the caster 20. Both of the aforementioned implementation methods are conventional applications of the existing connection technology between the brake lever 42 and the caster 20, and do not involve innovative design at the connection relationship level.

[0064] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model, and should all be included within the protection scope of this utility model.

Claims

1. A connecting mechanism, characterized in that, It includes a pedal, a connecting frame, a linkage assembly, and a braking component, wherein the pedal is adapted to be rotatably connected to the seat of the anesthesia machine about a first axis; The connecting frame is fixed to the pedal; The linkage component is rotatably connected to the connecting frame around the second axis; The braking component includes a transmission rod and a brake rod. The transmission rod is connected to the linkage assembly. One end of the brake rod is poweredly connected to the transmission rod, and the other end of the brake rod is adapted to be connected to the brake assembly of the caster. By stepping on the pedal, the transmission rod can be rotated around the third axis, so that the transmission rod can brake the casters on the seat through the brake rod; wherein, the first axis, the second axis and the third axis are parallel to each other and are not coplanar.

2. The connecting mechanism according to claim 1, characterized in that, The linkage assembly includes a first linkage member and a second linkage member. One end of the first linkage member is rotatably connected to the connecting frame about the second axis, and the other end of the first linkage member is rotatably connected to the second linkage member about the fourth axis. The end of the second linkage member away from the first linkage member is fixedly connected to the transmission rod. The first axis, the second axis, the third axis, and the fourth axis are parallel to each other, and any three of them are not coplanar.

3. The connecting mechanism according to claim 2, characterized in that, The first linkage includes a first connecting piece and a second connecting piece. The connecting frame has a first side and a second side opposite to each other along the extension direction of the second axis. The second linkage has a third side and a fourth side opposite to each other along the extension direction of the fourth axis. The first side corresponds to the third side, and the second side corresponds to the fourth side. One end of the first connecting piece is rotatably connected to the first side of the connecting frame about the second axis, and the other end of the first connecting piece is rotatably connected to the third side of the second linkage about the fourth axis; one end of the second connecting piece is rotatably connected to the second side of the connecting frame about the second axis, and the other end of the second connecting piece is rotatably connected to the fourth side of the second linkage about the fourth axis.

4. The connecting mechanism according to claim 2, characterized in that, The second linkage member has an opening structure at the end away from the first linkage member. The opening structure extends through the second linkage member along the extension direction of the third axis. The side of the opening structure near the transmission rod has an opening, and the transmission rod is inserted into the opening structure.

5. The connecting mechanism according to claim 2, characterized in that, The end of the first linkage member closer to the connecting bracket is lower than the other end of the first linkage member; the end of the second linkage member closer to the first linkage member is lower than the other end of the second linkage member.

6. The connecting mechanism according to claim 1, characterized in that, The pedal is provided with a mounting base, and the connecting bracket is detachably connected to the mounting base; The pedal is rotatably connected to the seat of the anesthesia machine via the mounting base about the first axis.

7. The connecting mechanism according to claim 5, characterized in that, The connecting frame includes a base plate, a first side plate, a second side plate, and a connecting shaft. The base plate is detachably connected to the pedal. The first side plate and the second side plate are both located on the side of the base plate away from the pedal. The first side plate and the second side plate are spaced apart on the base plate in the extension direction of the second axis. The connecting shaft is connected between the base plate and the second side plate. The linkage assembly is rotatably connected to the connecting shaft around the second axis.

8. The connecting mechanism according to claim 1, characterized in that, The brake lever includes a first sub-brake lever and a second sub-brake lever. The transmission rod is poweredly connected between the first sub-brake lever and the second sub-brake lever. The end of the first sub-brake lever away from the transmission rod and the end of the second sub-brake lever away from the transmission rod are both adapted to be connected to the brake assembly of the caster. The first sub-brake lever, the transmission lever, and the second sub-brake lever are coaxial; or, the first sub-brake lever is adapted to be rotatably connected to the base about a fifth axis, and the second sub-brake lever is adapted to be rotatably connected to the base about a sixth axis, wherein the third axis, the fifth axis, and the sixth axis are coplanar and intersect each other.

9. The connecting mechanism according to claim 8, characterized in that, The connecting mechanism also includes a universal joint; The first sub-brake lever is connected to the transmission lever via the universal joint; And / or, the second sub-brake lever is connected to the transmission lever via the universal joint.

10. An anesthesia machine, characterized in that, The device includes a main body, a seat, and a connecting mechanism as described in any one of claims 1-9. The main body is disposed on the seat, the pedal is rotatably connected to the seat of the anesthesia machine about a first axis, casters are provided on the seat, the transmission rod is connected to the linkage assembly, one end of the brake rod is poweredly connected to the transmission rod, and the other end of the brake rod is connected to the brake assembly of the casters.

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