Transmission mechanism and optical device

Abstract

The application discloses a transmission mechanism and an optical device. The transmission mechanism comprises a first gear component, a first gear shaft, a second gear component, a second gear shaft and a synchronous belt assembly. The first gear component serves as an input end, and the second gear component serves as an output end. The first gear shaft is arranged on the first gear component, and the second gear shaft is arranged on the second gear component. The synchronous belt assembly comprises a first belt wheel, a second belt wheel and a synchronous belt component. The first belt wheel is arranged on the first gear shaft, the second belt wheel is arranged on the second gear shaft, and the synchronous belt component is sleeved on the first belt wheel and the second belt wheel respectively to realize transmission. In the application, the synchronous belt assembly is used to replace the transmission mode of multi-stage gear meshing, so that the precision problem caused by multiple empty return accumulations of multi-stage transmission is reduced. Meanwhile, the synchronous belt assembly is simple to design and manufacture, has low requirements on shaft spacing, and is more flexible in structure design. The transmission mechanism is suitable for modular combination design of a reduction gear set.

Description

Technical Field

[0001] This application relates to the field of precision instrument technology, and in particular to a transmission mechanism and optical device. Background Technology

[0002] In related technologies, some high-end optical instruments use gear transmission structures to achieve coarse and fine adjustments along the Z-axis. The main reason for adopting gear transmission structures is that gear transmission, as a common power transmission scheme, has the advantages of compact structure and stable transmission ratio. However, there are also many problems when applied to high-end instruments, such as the difficulty of adjusting multi-stage gear transmissions during assembly, the optimization of manufacturing processes, and the problem of backlash encountered during instrument use. Utility Model Content

[0003] This application proposes a transmission mechanism to effectively address the technical problems of insufficient application of gear transmission in high-end instruments in related technologies.

[0004] This application also proposes an optical device including the aforementioned transmission mechanism.

[0005] The first aspect of this application provides a transmission mechanism, including: a first gear component, a first gear shaft, a second gear component, a second gear shaft, and a timing belt assembly;

[0006] The first gear component serves as the input terminal, and the second gear component serves as the output terminal.

[0007] The first gear shaft is mounted on the first gear component, and the second gear shaft is mounted on the second gear component;

[0008] The synchronous belt assembly includes a first pulley, a second pulley, and a synchronous belt component. The first pulley is mounted on the first gear shaft, the second pulley is mounted on the second gear shaft, and the synchronous belt component is respectively sleeved on the first pulley and the second pulley to achieve transmission.

[0009] Furthermore, the timing belt component adopts an MXL-type trapezoidal tooth.

[0010] Furthermore, the timing belt component is made of an elastic material.

[0011] Furthermore, the transmission mechanism includes a fixed base with a mounting cavity, the first gear shaft and the second gear shaft are disposed on the fixed base, and the first gear component, the second gear component and the timing belt assembly are located in the mounting cavity.

[0012] Furthermore, the mounting cavity includes a first mounting cavity and a second mounting cavity, the first mounting cavity is in communication with the second mounting cavity, the first gear component and the first pulley are located in the first mounting cavity, the second gear component and the second pulley are located in the second mounting cavity, and the axial dimensions of the first mounting cavity and the second mounting cavity are the same or different.

[0013] Furthermore, at least one of the first gear shaft or the second gear shaft is mounted on the fixed seat by means of a deep groove ball bearing.

[0014] Furthermore, the timing belt assembly also includes a tensioning pulley, which is disposed on the fixed base and acts on the timing belt component to tension the timing belt component.

[0015] Furthermore, the timing belt assembly also includes an adjustment component, and the tensioning pulley is mounted on the fixed base via the adjustment component. The adjustment component is used to adjust the tension of the tensioning pulley on the timing belt assembly.

[0016] Furthermore, the first gear component has fewer teeth than the second gear component to form a speed reduction structure.

[0017] As can be seen from the above technical solutions, the embodiments of this application have at least the following beneficial effects: by replacing the transmission method of multi-stage gear meshing with a synchronous belt assembly, the accuracy problem caused by multiple backlashes due to multi-stage transmission is reduced. At the same time, the synchronous belt assembly is easy to design and manufacture, has low requirements for shaft spacing, and has a more flexible structural design. This transmission mechanism is suitable for the modular combination design of reduction gear sets.

[0018] A second aspect of this application provides an optical device, including a transmission mechanism as described in the first aspect of this application.

[0019] It is easy to understand that the optical device in the second aspect embodiment of this application has the same technical effect as the transmission mechanism in the first aspect embodiment, and therefore will not be described again.

[0020] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the transmission mechanism provided in one embodiment of this application.

[0023] Figure label:

[0024] 100. First gear assembly; 110. First gear shaft; 111. Deep groove ball bearing;

[0025] 200. Second gear assembly; 210. Second gear shaft;

[0026] 300. Synchronous belt assembly; 310. First pulley; 320. Second pulley; 330. Synchronous belt component; 340. Tensioner; 350. Adjusting component;

[0027] 400, Fixing base; 410, Mounting cavity; 411, First mounting cavity; 412, Second mounting cavity. Detailed Implementation

[0028] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0029] See Figure 1 As shown, an embodiment of the first aspect of this application discloses a transmission mechanism, including a first gear component 100, a first gear shaft 110, a second gear component 200, a second gear shaft 210, and a synchronous belt assembly 300;

[0030] The first gear component 100 serves as the input end, and the second gear component 200 serves as the output end. The first gear shaft 110 is disposed on the first gear component 100, and the second gear shaft 210 is disposed on the second gear component 200. The synchronous belt assembly 300 includes a first pulley 310, a second pulley 320, and a synchronous belt component 330. The first pulley 310 is disposed on the first gear shaft 110, the second pulley 320 is disposed on the second gear shaft 210, and the synchronous belt component 330 is respectively sleeved on the first pulley 310 and the second pulley 320 to realize transmission.

[0031] In the embodiments of this application, the transmission method of multi-stage gear meshing is replaced by a synchronous belt assembly 300, thereby reducing the accuracy problems caused by multiple backlashes due to multi-stage transmission. At the same time, the synchronous belt assembly 300 is easy to design and manufacture, has low requirements for shaft spacing, and has a more flexible structural design. This transmission mechanism is suitable for the modular combination design of reduction gear sets.

[0032] Understandably, gear drives in related technologies transmit power through the meshing of metal gears, typically requiring precise shaft spacing design and continuous lubrication to ensure transmission efficiency and component lifespan. Therefore, when gear drive structures are applied to precision instruments, the following technical problems mainly exist:

[0033] 1. Sliding friction exists between the tooth surfaces, resulting in significant energy loss;

[0034] 2. Requires long-term lubrication, resulting in high maintenance costs;

[0035] 3. High requirements for shaft spacing fit, increasing design and manufacturing complexity;

[0036] 4. Overload can easily damage gears, as it lacks buffering and protection mechanisms;

[0037] 5. In multi-stage transmissions (three or more stages), the cumulative backlash increases.

[0038] In response, the transmission mechanism disclosed in this application aims to overcome the above-mentioned shortcomings of gear transmission. By using a synchronous belt assembly 300 for power transmission, it reduces energy loss, lightens weight, simplifies maintenance, and provides overload protection. It also solves the accuracy loss problem caused by three-stage transmission, thereby solving the problem of backlash in the coarse and fine adjustment of the Z-axis of high-end instruments.

[0039] Furthermore, it should be noted that the first gear shaft 110 is positioned at the center of the first gear component 100 and the first pulley 310, so that all three rotate synchronously when driving force is input from the first gear component 100. Similarly, the second gear shaft 210 is positioned at the center of the second gear component 200 and the second pulley 320, so that the transmitted driving force is output from the second gear component 200. The first pulley 310 and the second pulley 320 are connected by a synchronous belt component 330. The synchronous belt assembly 300 primarily uses rolling friction for transmission, requiring no lubrication, resulting in lower energy loss. It also eliminates the need for oil, reducing maintenance workload, has low requirements for shaft spacing, allows for more flexible structural design, reduces the accumulated gaps in multi-stage transmissions, and provides overload protection based on the characteristics of the synchronous belt.

[0040] In other embodiments, some power transmission functions can be achieved through chain drive or other means, but the chain still requires a lubrication system and does not have the elastic protection function of the timing belt component 330 in the embodiments of this application, so it cannot completely replace the solution provided in this application.

[0041] The following will combine Figure 1 The transmission mechanism disclosed in the embodiments of this application will be explained and described in detail.

[0042] Understandably, in order to achieve a more precise meshing between the synchronous belt component 330 and the synchronous pulley and meet the transmission requirements of precision instruments, the structural design of the synchronous belt component 330 and the synchronous pulley is the key to achieving the above-mentioned effect.

[0043] For example, the timing belt component 330 adopts an MXL-type trapezoidal tooth. By adopting an XL-type trapezoidal tooth industrial timing belt, the cumulative gap of multi-stage transmission is reduced and a better transmission effect is achieved through the precision rolling meshing structure between the timing belt component 330 and the timing pulley.

[0044] In some embodiments, the XL-type trapezoidal tooth industrial synchronous belt uses a 76-tooth belt with a width of 5mm and a pitch of 2.032, resulting in better transmission performance.

[0045] For example, the timing belt component 330 is made of an elastic material. It is understood that by utilizing the properties of the elastic material, the timing belt assembly 300 is able to have overload protection capabilities, in which the timing belt can elastically deform and slip when overloaded, acting as a "mechanical fuse".

[0046] In some embodiments, the timing belt component 330 is made of high-strength rubber and glass fiber / steel wire core, thereby providing better overload slip protection and making the transmission mechanism of this application embodiment suitable for modular combination design of reduction gear sets.

[0047] In some embodiments of this application, the transmission mechanism includes a fixed base 400, which forms a mounting cavity 410. A first gear shaft 110 and a second gear shaft 210 are disposed on the fixed base 400, and a first gear component 100, a second gear component 200, and a synchronous belt assembly 300 are located within the mounting cavity 410. It is understood that the fixed base 400 serves as the mounting foundation, supporting the various components and enabling their structural integration and functional coordination. After the fixed base 400 is installed in a suitable position, the transmission effect can be achieved, simplifying the installation process. The transmission mechanism of this application embodiment is suitable for coarse and fine adjustments of equipment in precision transmission scenarios where high stability and reliability are required.

[0048] Exemplary, in some embodiments, the mounting cavity 410 includes a first mounting cavity 411 and a second mounting cavity 412, the first mounting cavity 411 and the second mounting cavity 412 are in communication, the first gear component 100 and the first pulley 310 are located in the first mounting cavity 411, the second gear component 200 and the second pulley 320 are located in the second mounting cavity 412, and the axial dimensions of the first mounting cavity 411 and the second mounting cavity 412 are the same or different. It is understood that the components in the first mounting cavity 411 are used adjacent to or connected to the input power mechanism, the components in the second mounting cavity 412 are used adjacent to or connected to the output power mechanism, and the space between the first mounting cavity 411 and the second mounting cavity 412 is used for the installation of the synchronous belt component 330. Compared with the multi-stage gear transmission structure in related technologies, the mounting cavity 410 of this application embodiment occupies less space, and the specific space occupied by the first mounting cavity 411 and the second mounting cavity 412 can be more flexibly adjusted, thereby forming a modular transmission system with high efficiency, light weight, and fewer intermediate transmission components.

[0049] For example, refer to Figure 1 The axial dimension of the first mounting cavity 411 is larger than the axial dimension of the second mounting cavity 412. The connecting space between the first mounting cavity 411 and the second mounting cavity 412 is narrowed. This narrowed mounting cavity is used to accommodate the synchronous belt component 330, thereby achieving the effect of lightweight design.

[0050] Furthermore, at least one of the first gear shaft 110 or the second gear shaft 210 is mounted on the fixed seat 400 by means of a deep groove ball bearing 111. It is understood that the deep groove ball bearing 111 can reduce friction and ensure smooth operation.

[0051] For example, the first gear shaft 110 and the second gear shaft 210 are respectively mounted on the fixed seat 400 via deep groove ball bearings 111.

[0052] In some embodiments of this application, the timing belt assembly 300 further includes a tensioning pulley 340, which is disposed on the fixed base 400 and acts on the timing belt component 330 to tension the timing belt component 330. It is understood that the tensioning pulley 340 is used to tension the timing belt component 330, thereby ensuring smooth operation.

[0053] In some embodiments, the specific structure of the mounting cavity 410 can be adaptively adjusted according to the setting position of the tensioning wheel 340, thereby meeting the lightweight design requirements while reserving installation space for the tensioning wheel 340.

[0054] In some embodiments, the timing belt assembly 300 further includes an adjustment component 350, wherein the tensioning pulley 340 is mounted on the fixed base 400 via the adjustment component 350, and the adjustment component 350 is used to adjust the tension of the tensioning pulley 340 on the timing belt assembly 330.

[0055] For example, the adjusting component 350 is a bearing sleeve used to install and protect the bearing, ensuring smooth operation while facilitating tension adjustment.

[0056] For example, the first gear component 100 has fewer teeth than the second gear component 200 to form a reduction structure. It is understood that the transmission mechanism of this application embodiment is based on the arrangement of the synchronous belt assembly 300, thereby enabling its application to a modular combination design of reduction gear sets.

[0057] The transmission mechanism of this application embodiment is described in detail below with reference to a specific example. It should be noted that the following embodiment is merely an exemplary description and should not be construed as limiting the embodiments of this application.

[0058] See Figure 1 As shown, the transmission mechanism in this embodiment includes a fixed base 400, a bearing sleeve, a deep groove ball bearing 111, an MXL type trapezoidal tooth industrial synchronous belt, a first synchronous pulley, a second synchronous pulley, a first gear, and a second gear. Through the structural integration and functional synergy of the above key components, the problem of multiple backlashes caused by multi-stage transmission is reduced, specifically addressing the issue of accuracy loss caused by multiple backlashes in the instrument.

[0059] The fixed seat 400 is used to fix and support other parts in the transmission device, and the bearing sleeve is used to install and protect the bearing, ensuring smooth operation and facilitating tension adjustment; the bearing sleeve also reduces friction and ensures smooth operation. In this application, the MXL-type trapezoidal tooth industrial synchronous belt is used for power transmission and elastic protection. As a transmission element, it transmits power through meshing with the synchronous pulley, featuring low friction, low maintenance, and high elasticity. This reduces energy loss, weight, and maintenance steps, and provides protection against overload. The first and second synchronous pulleys cooperate with the synchronous belt to transmit power. The precision-machined tooth groove structure meshes precisely with the synchronous belt tooth profile, achieving efficient transmission and stable power output. The first and second gears are used to change the rotational speed and transmit power, achieving a reduction function between input and output. They work in conjunction with the synchronous pulley to meet multi-stage transmission requirements.

[0060] Through the structural integration and functional synergy of the aforementioned key components, a modular synchronous belt drive system with high efficiency, lightweight, fewer transmission components and self-protection capabilities is formed, which is suitable for coarse and fine adjustment of the Z-axis in precision transmission scenarios where high stability and reliability are required.

[0061] The second aspect of this application discloses an optical device, which can be a precision instrument such as a microscope. The optical device includes: the transmission mechanism of the first aspect of this application.

[0062] It is easy to understand that the optical device in the second aspect embodiment of this application has the same technical effect as the transmission mechanism in the first aspect embodiment, and therefore will not be described again.

[0063] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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. Therefore, they should not be construed as limitations on this application.

[0064] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "multiple" means two or more. It should be noted that the term "and / or" used herein is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. Similarly, at least one of A or B can also represent: A alone, A and B simultaneously, or B alone.

[0065] In the description of this application, it should be noted that, unless otherwise expressly 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 direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0066] In the foregoing description of this specification, references to terms such as "one embodiment," "another embodiment," or "some embodiments" indicate that a specific feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of this application. In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. A transmission mechanism, characterized in that, include: First gear assembly, first gear shaft, second gear assembly, second gear shaft, and timing belt assembly; The first gear component serves as the input terminal, and the second gear component serves as the output terminal. The first gear shaft is mounted on the first gear component, and the second gear shaft is mounted on the second gear component; The synchronous belt assembly includes a first pulley, a second pulley, and a synchronous belt component. The first pulley is mounted on the first gear shaft, the second pulley is mounted on the second gear shaft, and the synchronous belt component is respectively sleeved on the first pulley and the second pulley to achieve transmission.

2. The transmission mechanism according to claim 1, characterized in that: The timing belt component uses MXL-type trapezoidal teeth.

3. The transmission mechanism according to claim 1, characterized in that: The timing belt component is made of an elastic material.

4. The transmission mechanism according to claim 1, characterized in that: The transmission mechanism includes a fixed base with a mounting cavity. The first gear shaft and the second gear shaft are disposed on the fixed base, and the first gear component, the second gear component, and the synchronous belt assembly are located in the mounting cavity.

5. The transmission mechanism according to claim 4, characterized in that: The mounting cavity includes a first mounting cavity and a second mounting cavity. The first mounting cavity communicates with the second mounting cavity. The first gear component and the first pulley are located in the first mounting cavity, and the second gear component and the second pulley are located in the second mounting cavity. The axial dimensions of the first mounting cavity and the second mounting cavity are the same or different.

6. The transmission mechanism according to claim 4, characterized in that: The first gear shaft or at least one of the second gear shafts is mounted on the fixed seat by means of a deep groove ball bearing.

7. The transmission mechanism according to claim 4, characterized in that: The timing belt assembly also includes a tensioning pulley, which is disposed on the fixed base and acts on the timing belt component to tension the timing belt component.

8. The transmission mechanism according to claim 7, characterized in that: The timing belt assembly also includes an adjustment component, and the tensioning pulley is mounted on the fixed base via the adjustment component. The adjustment component is used to adjust the tension of the tensioning pulley on the timing belt assembly.

9. The transmission mechanism according to claim 1, characterized in that: The first gear component has fewer teeth than the second gear component to form a speed reduction structure.

10. An optical device, characterized in that, include: The transmission mechanism as described in any one of claims 1 to 9.

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