Journey adjustment mechanism and medical device

Abstract

The utility model relates to a kind of stroke adjusting mechanism, comprising: base body;Carry platform;Arm group, the arm group is connected the base body and carry platform by pivot;And elastic reset piece, the elastic reset piece is sleeved in the pivot, when driving the arm group makes the carry platform relative to the base body is lifted, the elastic reset piece provides support force or recovery force by deformation.

Description

Technical Field

[0001] This utility model relates to the field of medical technology, and in particular to a stroke adjustment mechanism and a medical device having the stroke adjustment mechanism. Background Technology

[0002] As the application scenarios of medical equipment continue to expand and deepen, the requirements for lifting systems are becoming increasingly diverse and stringent. In existing technologies, common lifting mechanisms often employ a design scheme with gas springs as the core component. However, existing structures have poor adaptability to different system configurations, making it difficult to flexibly and precisely adjust lifting force and operational performance without replacing core components, thus limiting their versatility in various application scenarios. Furthermore, the output of a simple gas spring is easily affected by fluctuations in ambient temperature, leading to decreased system stability, especially in medical environments requiring long-term reliable operation. This not only increases the complexity of system debugging and periodic maintenance and industrial costs but also, overall, restricts the application potential of this type of mechanism in high-end, demanding medical equipment. Utility Model Content

[0003] This utility model was made in view of the above-mentioned problems, and its purpose is to provide a stroke adjustment mechanism and a medical device equipped with the stroke adjustment mechanism, which can solve the above-mentioned problems existing in the prior art, thereby realizing a stroke adjustment mechanism and a medical device equipped with the stroke adjustment mechanism that are highly adaptable to different load configurations, have high environmental stability, low manufacturing cost and high convenience.

[0004] An exemplary embodiment of this utility model provides a stroke adjustment mechanism, including: a base; a platform; an arm assembly connecting the base and the platform via a rotating shaft; and an elastic reset member sleeved on the rotating shaft. When the arm assembly is driven to raise or lower the platform relative to the base, the elastic reset member provides a supporting force or a restoring force through deformation.

[0005] Preferably, the arm assembly includes a first arm and a second arm, and the rotating shaft includes a first shaft, a second shaft, a third shaft, and a fourth shaft. One end of the first arm is rotatably connected to the base via the first shaft, and the other end is rotatably connected to the platform via the second shaft. One end of the second arm is rotatably connected to the base via the third shaft, and the other end is rotatably connected to the platform via the fourth shaft. The elastic reset member is sleeved on at least one of the first shaft, the second shaft, the third shaft, and the fourth shaft.

[0006] Preferably, a gas spring is installed inside the arm assembly. One end of the gas spring is connected to the platform via the upper shaft of the gas spring, and the other end is connected to the base via the lower shaft of the gas spring. The gas spring and the elastic reset member work together to provide lifting force during the lifting process.

[0007] Preferably, the arm assembly is provided with a snap-fit ​​structure, the base or the platform is provided with a fixed position, and the elastic reset member includes a first leg and a second leg, the first leg being snapped into the snap-fit ​​structure and the second leg being fixed to the fixed position.

[0008] Preferably, the base or the platform has a first chamber, a second chamber and a third chamber arranged sequentially along the axial direction of the rotating shaft. The rotating shaft passes through the base or the platform and through the first chamber, the second chamber and the third chamber. The first chamber and the third chamber are used to connect the arm assembly, and the second chamber is used to install the elastic reset member.

[0009] Preferably, the second chamber is formed at the center of the rotating shaft.

[0010] Preferably, it further includes an isolation collar, which is sleeved on the rotating shaft to separate the elastic reset member from the rotating shaft.

[0011] Preferably, the isolation collar is a low-friction ring made of polymer material.

[0012] Preferably, it further includes an adjustment actuator, which is rotatably disposed on the base or the platform for adjusting the preload of the elastic reset member.

[0013] Preferably, the adjusting actuator is a knob, which adjusts the preload by changing the deformation angle of the elastic reset member when rotated.

[0014] Preferably, the elastic reset element is a torsion spring.

[0015] Another exemplary embodiment of the present invention provides a medical device including the travel adjustment mechanism described in any of the above embodiments.

[0016] Preferably, the medical device includes at least one of an ultrasound imaging device, an anesthesia machine, a monitoring device, an electrocardiograph, and a medical trolley. Attached Figure Description

[0017] A better understanding of the present invention can be achieved by describing exemplary embodiments of the invention in conjunction with the accompanying drawings. In the drawings:

[0018] Figure 1 This is a side view illustrating a stroke adjustment mechanism according to an exemplary embodiment of the present invention.

[0019] Figure 2 This is an exploded view of the stroke adjustment mechanism involved in an exemplary embodiment of the present invention.

[0020] Figure 3 This is a schematic diagram of the connection structure of the stroke adjustment mechanism according to an exemplary embodiment of the present invention, as seen from the inner side of the upper arm and the base.

[0021] Figure 4 This is a schematic diagram of the connection structure of the stroke adjustment mechanism according to an exemplary embodiment of the present invention, as seen from the outside of the upper arm and the base.

[0022] Figure 5 This is a partial enlarged view of the elastic reset member in the stroke adjustment mechanism according to an exemplary embodiment of the present invention.

[0023] Figure 6 This is a schematic diagram of the connection structure of the stroke adjustment mechanism, as seen from the outside of the upper arm and the base, in another exemplary embodiment of the present invention.

[0024] Figure 7 This is a schematic diagram illustrating a medical device according to yet another exemplary embodiment of the present invention. Detailed Implementation

[0025] The following describes specific embodiments of this utility model. It should be noted that, in order to provide a concise description, this specification cannot provide a detailed description of all features of the actual embodiments. It should be understood that, in the actual implementation of any embodiment, just as in any engineering or design project, various specific decisions are often made to achieve the developer's specific goals and to meet system-related or business-related constraints, and this can change from one embodiment to another. Furthermore, it is understood that although the efforts made in this development process may be complex and lengthy, for those skilled in the art related to the content disclosed in this utility model, some design, manufacturing, or production modifications based on the technical content disclosed in this disclosure are merely conventional technical means and should not be construed as insufficient content of this disclosure.

[0026] Unless otherwise defined, the technical or scientific terms used in the claims and description shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar words used in the specification and claims of this utility model patent application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. The terms "an" or "a" and similar words do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising" or "including" and similar words mean that the element or object preceding "comprising" or "including" encompasses the element or object listed following "comprising" or "including" and its equivalents, and do not exclude other elements or objects. The terms "connected" or "linked" and similar words are not limited to physical or mechanical connections, nor are they limited to direct or indirect connections.

[0027] According to an exemplary embodiment of the present invention, a stroke adjustment mechanism is provided.

[0028] Figure 1 This is a side view illustrating the stroke adjustment mechanism 100 according to an exemplary embodiment of the present invention. Figure 1 As shown, the stroke adjustment mechanism 100 includes a base 101, an arm assembly 102, a platform 103, and an elastic reset member 104 (its specific structure will be discussed later). Figure 2 (As shown in the figure). The arm assembly 102 is rotatably connected to the base 101 and the platform 103 via a pivot. The elastic reset member 104 is sleeved on the pivot. When the arm assembly 102 is driven to raise and lower the platform 103 relative to the base 101, the elastic reset member 104 undergoes elastic deformation, thereby providing support force or restoring force to the stroke adjustment mechanism 100.

[0029] By adopting the above configuration, the adaptability of the stroke adjustment mechanism 100 to different loads can be improved. Specifically, the installation and removal of the elastic reset member 104 is very simple and quick, thus allowing for the selection of elastic reset members 104 that provide different support / recovery forces (e.g., torsion springs with different stiffness coefficients) according to different usage scenarios, without changing the configuration of other components. In a non-limiting example, the stroke adjustment mechanism 100 can be used to support displays of different sizes (not shown). Accordingly, without changing other components of the stroke adjustment mechanism 100, a smaller elastic reset member with a smaller support / recovery force can be configured for a smaller display, and a larger elastic reset member with a larger support / recovery force can be configured for a larger display. This improves the adaptability of the stroke adjustment mechanism.

[0030] The components of the stroke adjustment mechanism are described in more detail below.

[0031] The base 101 serves as the foundation support for the entire equipment, providing a stable mounting base and structural support for the entire stroke adjustment mechanism 100. The platform 103 is located at the front end of the stroke adjustment mechanism 100, used to carry external components that need to be raised or lowered, and can achieve raising or lowering movement relative to the base 101 under the drive of the arm assembly 102.

[0032] As the core component for power transmission and structural support, the boom 102 can transmit driving force during lifting and bear the load from the platform 103 and the external components mounted on it, ensuring smooth and reliable lifting and lowering operations.

[0033] Furthermore, the boom assembly 102 includes an upper arm 102a (first arm) and a lower arm 102b (second arm), which are arranged approximately parallel to each other, forming a four-bar linkage lifting support structure. The rotating shafts include shafts S1 (first shaft), S2 (second shaft), S3 (third shaft), and S4 (fourth shaft). One end of the upper arm 102a is rotatably connected to the base 101 via shaft S1, and the other end is rotatably connected to the platform 103 via shaft S2. Similarly, one end of the lower arm 102b is rotatably connected to the base 101 via shaft S3, and the other end is rotatably connected to the platform 103 via shaft S4. This structural design effectively ensures that the platform 103 maintains a horizontal posture during lifting. Elastic reset components can be fitted onto any one or more of shafts S1, S2, S3, and S4. The specific location and number of these components can be adjusted according to the requirements of lifting force, stroke, and load capacity in actual applications. The detailed structure and installation method of the elastic reset element 104 will be discussed later. Figure 2 Further explanation is needed.

[0034] In some exemplary embodiments, the stroke adjustment mechanism 100 also includes a control system (not shown). This control system precisely controls the lifting and lowering movements of the stroke adjustment mechanism 100 to achieve accurate and stable lifting operations, and to position and maintain different heights. Specifically, the control system is connected to the arm assembly 102 via a control line and a switch. By pulling or releasing the control line, the state of the switch is controlled to drive the arm assembly 102, thereby causing the platform 103 to lift and lower relative to the base 101. In this exemplary embodiment, the control line is preferably Bowden wire. This type of control line has an outer sheath and an inner core wire, which not only effectively transmits tension but also has the characteristics of bending resistance and interference resistance, making it particularly suitable for the wiring environment inside medical devices. However, it should be understood that this invention is not limited to this, and other types of wire commonly used in the art can be selected as the control line according to actual needs. Regarding the setting method of the control line / switch, any method in the prior art can be referred to, and this invention is not limited thereto.

[0035] Figure 2This is an exploded view of the stroke adjustment mechanism 100 according to an exemplary embodiment of the present invention. To clearly illustrate the internal structure of the arm assembly 102, the elastic reset member 104, and the connections between the components, the upper arm 102a is shown separately from the main structure in this diagram. Furthermore, in this exemplary embodiment, the case where the elastic reset member 104 is only provided on shaft S1 is illustrated as an example; however, it should be understood that this configuration is merely an example and not a limitation. For example, in some other embodiments, one or more elastic reset members 104 may be respectively fitted on any one or more of shafts S1, S2, S3, and S4 according to actual needs. The specific configuration can be determined comprehensively based on factors such as the actual load, lifting stroke length, and required lifting force, in order to optimize the user experience and extend the service life of the stroke adjustment mechanism.

[0036] Furthermore, in this exemplary embodiment, the elastic reset element 104 is a torsion spring. Torsion springs offer significant cost advantages, helping to reduce the overall manufacturing cost of the mechanism. Moreover, the force output of a torsion spring is largely unaffected by changes in environmental parameters such as temperature variations and air pressure fluctuations. This characteristic allows it to exhibit highly consistent performance in various working environments. Therefore, the stroke adjustment mechanism 100 using a torsion spring exhibits superior environmental adaptability and operational stability, providing a smoother, linear elastic drive, thereby offering users a precise and stable operating feel.

[0037] In some examples, the supporting or restoring force provided by the resilient return element is part of the auxiliary force for lifting. The remaining portion is provided by other components. For example, such as... Figure 2 As shown, a gas spring 105 is also installed inside the arm assembly 102. One end of the gas spring 105 is rotatably connected to the platform 103 via the upper shaft g1, and the other end is rotatably connected to the base 101 via the lower shaft g2. The gas spring 105 and the elastic reset member 104 work together to provide a smooth and controllable lifting force during the lifting and lowering of the platform 103 relative to the base 101. Specifically, during the entire lifting and lowering process of the platform 103 relative to the base 101, the gas spring 105 mainly utilizes its stable output force and approximately constant force value to effectively balance most of the load weight; while the torsion spring, with its linearly changing torque characteristics, is mainly used to compensate for torque changes during the movement and provides additional auxiliary starting force or buffering force at the beginning and end of the lifting and lowering phases. In this embodiment, the control system can refer to the mechanism described above, including control lines and switches. In such a scenario, the switch can be a built-in switch on the gas spring, which will not be elaborated here.

[0038] This composite design fully leverages the advantages of both elastic elements, significantly reducing operating force and making the lifting process smoother and easier, while also greatly improving the accuracy and stability of position control. Especially in medium to large loads or long-stroke lifting applications, because the gas spring and elastic return element do not need to be arranged side-by-side, but rather along the long axis of the stroke adjustment mechanism, there is no uneven force distribution on either side of the long axis. This collaborative mechanism effectively prevents the platform 103 from swaying or drifting during movement, thus ensuring a smooth, reliable, and controllable operating experience for the end user.

[0039] Figure 3 This is a schematic diagram of the connection structure of the stroke adjustment mechanism 100 according to an exemplary embodiment of the present invention, viewed from the inner side of the upper arm and the base. Figure 4 This is a schematic diagram of the connection structure of the stroke adjustment mechanism 100 according to an exemplary embodiment of the present invention, viewed from the outside of the upper arm and the base. The following is based on... Figure 3 and Figure 4 The elastic reset element 104 is described in detail.

[0040] like Figure 3 As shown, and in conjunction with reference Figure 2 In this exemplary embodiment, the elastic reset member 104 is specifically a torsion spring, which has an upper support leg 104a (first support leg, see below). Figure 2 The upper arm 102a has a lower support leg 104b (second support leg). The upper support leg 104a extends from the torsion spring body and reliably engages and is fixed within the corresponding engagement structure provided in the upper arm 102a. Similarly, when the elastic reset member 104 is provided on one side of the lower arm 102b, the lower support leg 104b of the elastic reset member 104 engages and is fixed within the corresponding engagement structure provided in the lower arm 102b in the same manner. The shape of the engagement structure is designed to precisely match the contour of the upper support leg 104a (e.g., it may be straight, L-shaped, or a specific curved shape) to ensure a reliable and secure engagement connection between the two, thereby ensuring effective torque transmission. In practical implementation, the snap-fit ​​structure can take various forms, such as grooves (with cross-sections that can be rectangular, V-shaped, or semi-circular) formed on the arm assembly 102 (including the upper arm 102a and the lower arm 102b), blind holes or through-hole-like cavities, and specially designed protrusions (such as hooks or pins). In some further preferred embodiments, the snap-fit ​​structure can also integrate an anti-detachment function, such as providing a buckle or elastic claw at the opening to prevent the outrigger from accidentally detaching during vibration or repeated operation.

[0041] Furthermore, the lower support leg 104b of the elastic reset member 104 is fixed to a pre-set fixing position in the base 101 in a similar manner. Correspondingly, in an alternative embodiment where the elastic reset member 104 is disposed on one side of the platform 103, the lower support leg 104b is correspondingly fixed to a pre-set fixing position in the platform 103. The specific shape of the fixing position can be designed in various ways according to the actual structural layout and assembly requirements. In some exemplary embodiments, the fixing position can be a mechanical structure such as a groove, protrusion (e.g., a positioning post), pin hole (for inserting a fixing pin), or threaded hole (for engaging a screw for tightening) formed on the base 101 or platform 103, the shape of which is adapted to the shape of the lower support leg 104b to achieve reliable fixing. Further, in other exemplary embodiments, the preload of the elastic reset member 104 can be initially adjusted by selecting different fixing positions or fixing methods to adapt to different load requirements or operating torques. As an optional implementation, multiple fixing holes with different lever arm lengths can be provided on the base 101 or the platform 103. By mounting the lower support leg 104b to different holes, the initial deformation of the elastic reset member 104 can be changed, thereby conveniently adjusting the magnitude of the preload torque it provides. In another optional implementation, an adjustable fixing method can be used to achieve stepless adjustment of the preload force. For example, a fixing block that can slide along a specific track and can be locked by screws, eccentric wheels, or quick-release mechanisms can be used. The lower support leg 104b is fixed to this fixing block, and the preload state of the elastic reset member 104 can be continuously adjusted by changing the position of the fixing block. This significantly improves the adaptability and adjustability of the mechanism, allowing the same basic design to be adapted to different external loads, operating torques, or user feel preferences with simple adjustments.

[0042] As described above, by fixing the two ends of the elastic reset member 104 to the upper arm 102a (or lower arm 102b) and the base 101 (or platform 103) respectively, a stable reset torque can be provided for the rotation of the arm assembly, effectively suppressing vibration and impact during the lifting process, thereby maintaining highly stable and consistent motion performance throughout the entire lifting stroke.

[0043] like Figure 3 and Figure 4 As shown, the upper arm 102a is rotatably connected to the base 101 via a pivot (shaft S1). Specifically, the inner end of the upper arm 102a near the base 101 is provided with symmetrically arranged double-ear structures, labeled as the first ear 102a-1 and the second ear 102a-2, respectively. These double-ear structures are preferably integrally formed with the main body of the upper arm 102a, or fixed by high-strength connection processes such as welding or riveting, to ensure structural integrity and load-bearing reliability.

[0044] A corresponding integrally formed connecting base is provided on the base 101. The interior of this base is divided by a partition into three independent chambers arranged axially along the shaft S1, which are sequentially referred to as the first chamber C1, the second chamber C2, and the third chamber C3. The shaft S1, serving as a rotating shaft, passes through the connecting base of the base 101 and through the first chamber C1, the second chamber C2, and the third chamber C3. The two ends of the shaft S1 can be axially fixed by means of retaining rings, end threads with nuts, or riveting to prevent it from moving during operation.

[0045] The upper arm 102a has a double-ear structure (first ear 102a-1 and second ear 102a-2) that is respectively housed and connected to the first chamber C1 and the third chamber C3. That is, the double-ear structure is embedded in the corresponding chambers and reliably rotates with the base 101 via a common shaft S1. This symmetrical layout allows for uniform force distribution, greatly improving the stability of the connection and the stiffness of the rotation axis.

[0046] The elastic reset member 104 (i.e., torsion spring) is housed and installed in the second chamber C2 located between the double-ear structure (first ear 102a-1 and second ear 102a-2), and sleeved on the shaft S1. Furthermore, the second chamber C2 is shaped to be axially centered on the shaft S1, thereby enabling the elastic reset member 104 to provide support force along the vertical plane. This effectively prevents tilting or jamming of the upper arm 102a (or lower arm 102b) during rotation due to asymmetrical force, ensuring the stability and smoothness of the stroke adjustment mechanism 100.

[0047] Furthermore, by adopting this integrated three-chamber structure, the layout of the connecting parts of the arm assembly, pivot, and elastic reset component is compact and reasonable, efficiently integrating the two major functions of rotation and elastic reset within a limited space. This design not only saves space and simplifies the overall structure, but also effectively ensures the symmetrical transmission of force and the stability of movement.

[0048] Figure 5 This is a partial enlarged view of the elastic reset member in the stroke adjustment mechanism 100 according to an exemplary embodiment of this utility model. Figure 5 As shown, in some exemplary embodiments, the stroke adjustment mechanism 100 further includes an isolation collar 106. The isolation collar 106 is sleeved on any one or more of the rotating shafts (shafts S1, S2, S3, and S4), and is disposed on the inner circumferential side of the elastic reset member 104 to separate the elastic reset member 104 from the rotating shaft. Specifically, the isolation collar 106 completely separates the elastic reset member 104 from the shaft surface in the radial direction.

[0049] By setting the isolation collar 106, direct contact between the inner surface of the elastic reset member 104 (torsion spring) and the rotating shaft can be effectively avoided, thereby fundamentally eliminating direct friction and wear between the two. This significantly reduces the wear of the elastic reset member 104 during repeated deformation and extends its service life. On the other hand, it also reduces abnormal noise and jamming caused by friction in the stroke adjustment mechanism 100 during lifting operations, improving the smoothness of the lifting process and the user's operating experience. In addition, the isolation collar 106 also has an auxiliary positioning function, which helps to accurately constrain and position the elastic reset member 104 nested outside it, effectively preventing radial displacement or loosening during operation and ensuring accurate and stable force transmission.

[0050] In some exemplary embodiments, to optimize its wear resistance and lubrication performance, the isolation collar 106 is preferably made of a low-friction, high-wear-resistant engineering plastic (such as polyoxymethylene (POM), nylon PA66, polytetrafluoroethylene (PTFE), or oil-impregnated nylon) or a surface-treated metal (such as Teflon plating, anodizing, electroless nickel plating, or surface phosphating). For example, in this exemplary embodiment, the isolation collar 106 is a low-friction ring made of a polymer material, which not only possesses self-lubricating properties but can also withstand high radial pressure. In other exemplary embodiments, the isolation collar 106 may also be designed as a split (open ring) structure or integrated with a flange to facilitate installation and achieve better axial positioning.

[0051] According to the stroke adjustment mechanism 100 with the above structure, since the elastic reset member 104 is always exposed on the outside when the stroke adjustment mechanism is in operation, external visual differentiation can be achieved by selecting elastic reset members of different types or colors, which facilitates component identification and assembly management.

[0052] Furthermore, the stroke adjustment mechanism 100 with the above-described structure uses an elastic reset element to assist the gas spring in providing the lifting force. This design offers advantages such as simple structure and ease of installation, significantly simplifying the assembly process and improving manufacturing convenience and production efficiency. Moreover, when the stroke adjustment mechanism 100 is applied to systems with different load sizes, the elastic reset element can be quickly and easily installed or removed to adapt to different load systems. Therefore, the stroke adjustment mechanism 100 with this structure possesses flexible configuration capabilities, allowing for quick and easy adjustment to meet the specific needs of different systems and users.

[0053] Figure 6This is a schematic diagram of the connection structure of the stroke adjustment mechanism 100' according to another exemplary embodiment of the present invention, viewed from the outside of the upper arm and the base. Similarly, in the stroke adjustment mechanism 100' according to this exemplary embodiment, the example is described with an elastic reset member 104 only provided on shaft S1, but it is not limited thereto. As mentioned above, in other embodiments, for example, one or more elastic reset members 104 may be fitted on any one or more of shafts S1, S2, S3, and S4, and the specific configuration can be determined according to the actual load, stroke, and lifting force requirements.

[0054] like Figure 6 As shown, the stroke adjustment mechanism 100' involved in this exemplary embodiment differs from the stroke adjustment mechanism 100 in that it also includes an adjustment actuator 107. The position of the adjustment actuator 107 corresponds to the installation position of the elastic reset member 104. Specifically, the adjustment actuator 107 is rotatably mounted on the base 101 (or platform 103) via a known rotatable support structure such as a bearing, bushing, or threaded connection. Its working end (such as a push rod, cam, or shift fork) contacts or forms a direct or indirect mechanical connection with the operating end of the elastic reset member 104 (such as the lower support leg 104b mentioned above). By driving the adjustment actuator 107 to move, the initial state of the elastic reset member 104 is changed, thereby adjusting the preload of the elastic reset member 104.

[0055] Specifically, in this exemplary embodiment, as Figure 6 As shown, the adjustment actuator 107 is specifically implemented as a knob. This knob is rotatably mounted to a corresponding position on the base 101 (or platform 103) using known techniques such as threaded engagement. For example, in some exemplary embodiments, a fixed threaded hole can be machined into the base 101 or platform 103, and a matching external thread can be machined into the knob body; installation is achieved through the engagement of both. By rotating the adjustment actuator 107 (knob) clockwise or counterclockwise, it undergoes axial displacement, thereby pushing or pulling the operating end of the connected resilient reset member 104.

[0056] As an optional implementation, the preload can be adjusted continuously or in stages by directly or indirectly changing the deformation angle of the elastic reset member 104. Alternatively, in another optional implementation, the preload can be adjusted by directly or indirectly changing the effective working length of the elastic reset member 104. By providing such an adjustment actuator 107, the stroke adjustment mechanism 100' is given extremely high flexibility, enabling it to adapt flexibly to different external loads, changing working conditions, and diverse operating feel preferences (such as lightness or stability) through simple user operation, significantly improving the product's applicability and user satisfaction.

[0057] Furthermore, in some further optimized exemplary embodiments, anti-slip textures (such as knurling, stripes, or dimples) can be provided on the peripheral outer surface of the adjustment actuator 107 (knob) to increase frictional resistance, facilitating the user to apply force and perform precise fine-tuning operations. Simultaneously, visual scale marks or numerical identifiers can be added to the surface of adjacent fixed components (such as the base 101) or the end face of the knob, allowing the user to intuitively identify the current adjustment level or position, thereby achieving repeatable precise setting and memory functions. In addition, in other exemplary embodiments, a locking mechanism (such as a lock nut or locking screw) can be provided to lock the position of the adjustment actuator 107 after adjustment, preventing accidental rotation due to vibration or other reasons during use.

[0058] As described above, according to the stroke adjustment mechanism 100' with the above structure, in addition to achieving all the technical effects of the stroke adjustment mechanism 100, by setting the adjustment actuator 107, it is also possible to conveniently and accurately adjust the preload of the elastic reset member 104, which significantly improves the overall adjustability of the equipment, so that a single device can adapt to a wider range of loads (e.g., from light load to heavy load) and diverse operating feel requirements (e.g., adjusting the required starting force and the damping feel of the movement) through simple adjustments.

[0059] According to another exemplary embodiment of the present invention, a medical device is provided. Figure 7 This is a schematic diagram illustrating a medical device 1000 according to another exemplary embodiment of the present invention. (As shown...) Figure 7 As shown, the medical device 1000 includes the aforementioned stroke adjustment mechanism 100 or stroke adjustment mechanism 100'. Medical devices equipped with the aforementioned stroke adjustment mechanism 100 or stroke adjustment mechanism 100' possess multiple advantages, including excellent operability, environmental stability, long lifespan, low cost, and ease of production. Specifically, the stroke adjustment mechanism 100 provides reliable lifting functionality, while the stroke adjustment mechanism 100' further possesses the ability to flexibly and precisely adjust according to actual usage scenarios and user preferences. This makes the final medical device 1000 a high-performance, widely applicable, and economically durable medical facility, fully meeting the comprehensive requirements of modern medical environments for equipment functionality, ergonomics, and economy.

[0060] Furthermore, in some embodiments, the aforementioned medical device 1000 can be embodied in various key medical diagnostic, treatment, or auxiliary devices, including at least one of an ultrasound imaging device, anesthesia machine, monitoring equipment, electrocardiograph, and medical trolley. Because the stroke adjustment mechanism involved in this invention possesses characteristics such as stability, smoothness, adjustability, and strong adaptability, this invention can be applied to various medical environments, such as hospitals, clinics, and operating rooms, and can meet the usage requirements of the aforementioned various medical devices.

[0061] The above describes the stroke adjustment mechanism and the medical device having the stroke adjustment mechanism involved in this utility model. However, the structures shown in the above exemplary embodiments are only examples of the content of this utility model, and can be combined with other known technologies, or a part of the structure can be omitted or modified without departing from the spirit of this utility model.

[0062] Furthermore, within the scope of this utility model, the various embodiments can be freely combined, any structural elements of the various embodiments can be modified, or any structural elements of the various embodiments can be omitted.

[0063] Industrial practicality

[0064] The stroke adjustment mechanism and medical equipment with stroke adjustment mechanism involved in this utility model can be widely used in various medical environments, such as hospitals, clinics, operating rooms, etc., and can meet the usage needs of various medical equipment.

Claims

1. A stroke adjustment mechanism, characterized in that, include: Matrix; Platform; The arm assembly connects the base and the platform via a pivot. as well as An elastic reset element is sleeved on the rotating shaft. When the arm assembly is driven to raise or lower the platform relative to the base, the elastic reset member provides support force or restoring force through deformation.

2. The stroke adjustment mechanism as described in claim 1, characterized in that, The arm assembly includes a first arm and a second arm. The rotating shaft includes a first shaft, a second shaft, a third shaft, and a fourth shaft. One end of the first arm is rotatably connected to the base via the first axis, and the other end is rotatably connected to the platform via the second axis. One end of the second arm is rotatably connected to the base via the third axis, and the other end is rotatably connected to the platform via the fourth axis. The elastic reset element is sleeved on at least one of the first axis, the second axis, the third axis, and the fourth axis.

3. The stroke adjustment mechanism as described in claim 1 or 2, characterized in that, The boom assembly is equipped with a gas spring. One end of the gas spring is connected to the platform via the upper gas spring shaft, and the other end is connected to the base via the lower gas spring shaft. The gas spring and the elastic reset member work together to provide lifting force during the lifting process.

4. The stroke adjustment mechanism as described in claim 1 or 2, characterized in that, The arm assembly is equipped with a snap-fit ​​structure. The substrate or the platform is provided with a fixed position. The elastic reset element includes a first leg and a second leg. The first leg engages with the snap-fit ​​structure. The second leg is fixed to the fixed position.

5. The stroke adjustment mechanism as described in claim 1 or 2, characterized in that, The substrate or the platform is provided with a first chamber, a second chamber, and a third chamber arranged sequentially along the axial direction of the rotation axis. The rotating shaft passes through the base or the platform, and extends through the first chamber, the second chamber, and the third chamber. The first chamber and the third chamber are used to connect the arm assembly, and the second chamber is used to install the elastic reset member.

6. The stroke adjustment mechanism as described in claim 5, characterized in that, The second chamber is positioned at the center of the rotating shaft.

7. The stroke adjustment mechanism as described in claim 5, characterized in that, It also includes isolation collars, The isolation collar is fitted onto the rotating shaft to separate the elastic reset member from the rotating shaft.

8. The stroke adjustment mechanism as described in claim 7, characterized in that, The isolation collar is a low-friction ring made of polymer material.

9. The stroke adjustment mechanism as described in claim 1 or 2, characterized in that, It also includes regulating actuators, The adjustment actuator is rotatably disposed on the base or the platform and is used to adjust the preload of the elastic reset member.

10. The stroke adjustment mechanism as described in claim 9, characterized in that, The adjustment actuator is a knob. The knob adjusts the preload by changing the deformation angle of the elastic reset member when rotated.

11. The stroke adjustment mechanism as described in claim 1 or 2, characterized in that, The elastic reset element is a torsion spring.

12. A medical device, characterized in that, Includes the stroke adjustment mechanism as described in any one of claims 1 to 11.

13. The medical device as described in claim 12, characterized in that, The medical equipment includes at least one of an ultrasound imaging device, anesthesia machine, monitoring equipment, electrocardiograph, and medical cart.

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