Two-degree-of-freedom adjusting structure

Abstract

The utility model provides a two-degree-of-freedom adjusting structure. The two-degree-of-freedom adjusting structure comprises a connecting main body, a fixed seat, an adjusting seat, two first joint assemblies and two second joint assemblies, the fixing base and the adjusting base are connected with the connecting body, the fixing base is used for being connected with an equipment body, and the adjusting base is used for being connected with a to-be-adjusted component. The two first joint assemblies each comprise a first joint piece, and the connecting body is connected with the fixing base through the two first joint pieces so that the connecting body can rotate around the axis of the first joint pieces relative to the fixing base. The two second joint assemblies each comprise a second joint piece, and the connecting body is connected with the adjusting base through the two second joint pieces so that the adjusting base can be rotationally arranged around the axis of the second joint pieces relative to the connecting body. The axis of the first joint piece is perpendicular to the axis of the second joint piece. The degree-of-freedom adjusting mechanism solves the problem that in the prior art, the structure of the degree-of-freedom adjusting mechanism is complex.

Description

Technical Field

[0001] This utility model relates to the field of industrial application technology, and more specifically, to a two-degree-of-freedom adjustment structure. Background Technology

[0002] Currently, two-degree-of-freedom (DOF) adjustment mechanisms play a crucial role in industrial automation and precision measurement. They enable equipment or workpieces to be adjusted in two independent dimensions to adapt to different operational needs and environmental changes. For example, combined with sensor technology, DDF adjustment mechanisms ensure accurate data feedback from sensors in various orientations, which is essential for data reliability and accuracy. On automated assembly lines, such mechanisms can flexibly adjust the position of workpieces, improving assembly efficiency and accuracy, reducing manual intervention, and achieving highly efficient automation of the production line.

[0003] However, existing two-degree-of-freedom adjustment mechanisms are often structurally complex, costly to manufacture, and cumbersome to operate. The complex structure not only increases the size and weight of the equipment but also increases the difficulty of maintenance and debugging, affecting its application in environments with limited space or requiring rapid response. Furthermore, the high cost limits its adoption by small and medium-sized enterprises or cost-sensitive projects, while the cumbersome operating procedures reduce work efficiency and increase the burden on training and operators. Utility Model Content

[0004] The main objective of this invention is to provide a two-degree-of-freedom adjustment structure to solve the problem of the complex structure of existing degree-of-freedom adjustment mechanisms.

[0005] To achieve the above objectives, according to one aspect of the present invention, a two-degree-of-freedom adjustment structure is provided, comprising: a connecting body; a fixed seat and an adjusting seat, respectively connected to the connecting body, the fixed seat being used to connect to the equipment body, and the adjusting seat being used to connect to the component to be adjusted; two first joint assemblies, each including a first joint member, the connecting body being connected to the fixed seat through the two first joint members, such that the connecting body is rotatably disposed relative to the fixed seat about the axis of the first joint member; and two second joint assemblies, each including a second joint member, the connecting body being connected to the adjusting seat through the two second joint members, such that the adjusting seat is rotatably disposed relative to the connecting body about the axis of the second joint member; wherein the axes of the first joint member and the second joint member are perpendicular to each other.

[0006] Furthermore, the first joint assembly also includes: a first locking member disposed on the fixed seat, the connecting body having a first arc-shaped hole, the first locking member passing through the first arc-shaped hole and movably disposed along its extension direction, at least a portion of the first locking member being abutting against the opening edge of the first arc-shaped hole, so as to fix the connecting body to the fixed seat when it rotates relative to the fixed seat to a preset position; wherein, the center of the circle containing the inner wall surface of the first arc-shaped hole coincides with the axis of the first joint member.

[0007] Furthermore, the first joint assembly also includes: two first limiting members, which are respectively spaced apart on the connecting body; the fixing seat is provided with a second arc-shaped hole; the two first limiting members are respectively inserted into the second arc-shaped hole and are movably arranged along its extension direction to limit the movement of the connecting body relative to the fixing seat; wherein, the center of the circle containing the inner wall surface of the second arc-shaped hole coincides with the axis of the first joint member.

[0008] Furthermore, the second joint assembly also includes: a second locking member disposed on the adjusting seat, the connecting body having a third arc-shaped hole, the second locking member passing through the third arc-shaped hole and movably disposed along its extending direction, at least a portion of the second locking member being abutting against the opening edge of the third arc-shaped hole, so as to fix the adjusting seat to a preset position when it rotates relative to the connecting body; wherein, the center of the circle containing the inner wall surface of the third arc-shaped hole coincides with the axis of the second joint member.

[0009] Furthermore, the second joint assembly also includes: two second limiting members, which are respectively spaced apart on the connecting body; the adjusting seat is provided with a fourth arc-shaped hole; the two second limiting members are respectively inserted into the fourth arc-shaped hole and are movably arranged along its extension direction to limit the movement of the adjusting seat relative to the connecting body; wherein, the center of the circle containing the inner wall surface of the fourth arc-shaped hole coincides with the axis of the second joint member.

[0010] Furthermore, the second joint assembly also includes: a guide post, which is disposed on the adjustment seat, and a fifth arc-shaped hole is provided on the connecting body. The guide post passes through the fifth arc-shaped hole and is movably disposed along its extension direction; wherein the center of the circle containing the inner wall surface of the fifth arc-shaped hole coincides with the axis of the second joint component.

[0011] Furthermore, the connecting body is provided with two first through holes, and the fixed seat is provided with two second through holes. The first joint member is respectively inserted into the first through holes and the second through holes, so that the connecting body and the fixed seat are rotatably connected relative to each other.

[0012] Furthermore, the connecting body is provided with two third through holes, and the adjusting seat is provided with two fourth through holes. The second joint is respectively inserted into the third through holes and the fourth through holes, so that the adjusting seat and the connecting body are rotatably connected.

[0013] Furthermore, the mounting base is provided with multiple connection holes for connection to the equipment body.

[0014] Furthermore, the adjusting seat is provided with multiple clamping elements for connecting with the component to be adjusted.

[0015] The present invention provides a two-degree-of-freedom adjustment structure, comprising a connecting body, a fixed seat, an adjusting seat, two first joint assemblies, and two second joint assemblies. The fixed seat and the adjusting seat are respectively connected to the connecting body. The fixed seat is used to connect to the equipment body, and the adjusting seat is used to connect to the component to be adjusted. Each of the two first joint assemblies includes a first joint member. The connecting body is connected to the fixed seat through the two first joint members, so that the connecting body is rotatably arranged relative to the fixed seat about the axis of the first joint member. Each of the two second joint assemblies includes a second joint member. The connecting body is connected to the adjusting seat through the two second joint members, so that the adjusting seat is rotatably arranged relative to the connecting body about the axis of the second joint member. The axes of the first joint members and the second joint members are perpendicular to each other.

[0016] Thus, the design of the first and second joint components enables adjustment of two degrees of freedom, namely independent rotation in two mutually perpendicular directions. This allows the component to be adjusted precisely along two axes in three-dimensional space, meeting the needs of more complex application scenarios. Compared with traditional complex adjustment mechanisms, the design of two independent joint components simplifies the entire adjustment structure, reduces the number of parts, and thus lowers manufacturing costs and assembly difficulty, solving the problem of the relatively complex structure of existing degree-of-freedom adjustment mechanisms. Furthermore, the independent first and second joint components can each achieve adjustment in a single direction independently, and the operation is simple, allowing for rapid and precise adjustments, thus improving work efficiency. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0018] Figure 1 A schematic diagram of the overall structure provided by an embodiment of the two-degree-of-freedom adjustment structure according to the present invention is shown.

[0019] The above figures include the following reference numerals:

[0020] 10. Connecting body; 11. First arc-shaped hole; 12. Third arc-shaped hole; 13. Fifth arc-shaped hole;

[0021] 20. Fixing base; 21. Second arc-shaped hole; 22. Connecting hole;

[0022] 30. Adjusting seat; 31. Fourth arc-shaped hole; 32. Clamping element;

[0023] 40. First joint assembly; 41. First joint component; 42. First locking component; 43. First limiting component;

[0024] 50. Second joint assembly; 51. Second joint component; 52. Second locking component; 53. Second limiting component; 54. Guide post. Detailed Implementation

[0025] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] To address the problem of the complex structure of existing degree-of-freedom adjustment mechanisms, this invention provides a two-degree-of-freedom adjustment structure.

[0027] Please refer to Figure 1 As shown, this utility model provides a two-degree-of-freedom adjustment structure, including a connecting body 10, a fixed seat 20, an adjusting seat 30, two first joint assemblies 40, and two second joint assemblies 50. The fixed seat 20 and the adjusting seat 30 are respectively connected to the connecting body 10. The fixed seat 20 is used to connect to the equipment body, and the adjusting seat 30 is used to connect to the component to be adjusted. Each of the two first joint assemblies 40 includes a first joint member 41. The connecting body 10 is connected to the fixed seat 20 through the two first joint members 41, so that the connecting body 10 is rotatably arranged relative to the fixed seat 20 about the axis of the first joint member 41. Each of the two second joint assemblies 50 includes a second joint member 51. The connecting body 10 is connected to the adjusting seat 30 through the two second joint members 51, so that the adjusting seat 30 is rotatably arranged relative to the connecting body 10 about the axis of the second joint member 51. The axes of the first joint member 41 and the second joint member 51 are perpendicular to each other.

[0028] By applying the technical solution of this utility model, the design of the first joint assembly 40 and the second joint assembly 50 enables adjustment of two degrees of freedom, namely independent rotation in two mutually perpendicular directions. This allows the component to be adjusted to be precisely adjusted along two axes in three-dimensional space, meeting the needs of more complex application scenarios. Compared with traditional complex adjustment mechanisms, the design of two independent joint assemblies enables rapid adjustment in two directions, simplifying the entire adjustment structure, reducing the number of parts, thereby reducing manufacturing costs and assembly difficulty, and solving the problem of the relatively complex structure of existing degree-of-freedom adjustment mechanisms. Furthermore, the independent first joint assembly 40 and the second joint assembly 50 can each achieve adjustment in a single direction independently, and the operation is simple, allowing for rapid completion of the required precise adjustment, thus improving work efficiency.

[0029] Specifically, the first joint assembly 40 further includes a first locking member 42, which is disposed on the fixed base 20. The connecting body 10 has a first arc-shaped hole 11. The first locking member 42 passes through the first arc-shaped hole 11 and is movably disposed along its extension direction. At least a portion of the first locking member 42 is abutting against the opening edge of the first arc-shaped hole 11, so that the connecting body 10 is fixed when it rotates relative to the fixed base 20 to a preset position. The center of the circle containing the inner wall of the first arc-shaped hole 11 coincides with the axis of the first joint member 41. Through the above arrangement, the cooperation between the first locking member 42 and the first arc-shaped hole 11 allows the connecting body 10 to achieve precise position fixation when it rotates relative to the fixed base 20 to a preset position through the locking action of the first locking member 42. This design ensures the stability of the component to be adjusted during the adjustment process and prevents it from shifting position due to external forces or gravity during operation. Meanwhile, the movable design of the first locking element 42 allows the operator to quickly and easily adjust and lock it. The operator only needs to adjust the connecting body 10 to the desired position, and then fix it by simply operating the first locking element 42, without the need for complicated tools or additional fixing steps, thus improving adjustment efficiency.

[0030] In this embodiment, the first locking member 42 is a screw and nut, which is tightened to fix the connecting body 10 relative to the fixing seat 20 in a preset position; the opening size of the first arc-shaped hole 11 can be adapted according to the required degree of adjustment.

[0031] Specifically, the first joint assembly 40 further includes two first limiting members 43, which are respectively spaced apart on the connecting body 10. The fixing seat 20 has a second arc-shaped hole 21. The two first limiting members 43 are respectively inserted into the second arc-shaped hole 21 and movably positioned along its extension direction to limit the movement of the connecting body 10 relative to the fixing seat 20. The center of the circle containing the inner wall of the second arc-shaped hole 21 coincides with the axis of the first joint member 41. Through the above arrangement, the spaced arrangement of the two first limiting members 43 on the connecting body 10 and their movable arrangement within the second arc-shaped hole 21 of the fixing seat 20 provide a physical boundary constraint on the rotational movement of the connecting body 10 relative to the fixing seat 20, thus limiting the maximum rotational adjustment angle of the connecting body 10 relative to the fixing seat 20. This allows the operator to intuitively perceive the rotational limit position when adjusting the connecting body 10, avoiding structural damage or functional failure caused by over-adjustment. Meanwhile, the combination of the limiting component and the arc-shaped hole effectively prevents the connecting body 10 from wobbling or swinging during rotation, which is especially important when bearing heavy objects or performing delicate operations. It helps maintain the precise position of the adjusting seat 30 and the component to be adjusted during the adjustment process, thereby improving the stability and reliability of the entire adjusting structure.

[0032] Specifically, the second joint assembly 50 also includes a second locking member 52, which is disposed on the adjusting seat 30. The connecting body 10 has a third arc-shaped hole 12. The second locking member 52 passes through the third arc-shaped hole 12 and is movably disposed along its extending direction. At least a portion of the second locking member 52 is abutting against the opening edge of the third arc-shaped hole 12, so that the adjusting seat 30 is fixed to the connecting body 10 when it rotates relative to the connecting body 10 to a preset position. The center of the circle containing the inner wall of the third arc-shaped hole 12 coincides with the axis of the second joint member 51. Through the above arrangement, the cooperation between the second locking member 52 and the third arc-shaped hole 12 allows the adjusting seat 30 to rotate precisely to the preset position relative to the connecting body 10 and achieve stable fixation at that position, ensuring the stability of the adjusted component under different working environments and improving the accuracy and reliability of operation. Meanwhile, the movable design of the second locking element 52 allows the operator to unlock and lock the adjusting seat 30 through simple manual operation, without the need for complicated tools or long-term adjustments, thus improving the efficiency and convenience of operation.

[0033] In this embodiment, the second locking member 52 is a screw and nut, which is tightened to fix the connecting body 10 relative to the fixing seat 20 in a preset position; the opening size of the third arc-shaped hole 12 can be adapted according to the required degree of adjustment.

[0034] Specifically, the second joint assembly 50 also includes two second limiting members 53, which are respectively spaced apart on the connecting body 10. The adjusting seat 30 is provided with a fourth arc-shaped hole 31. The two second limiting members 53 are respectively inserted into the fourth arc-shaped hole 31 and movably arranged along its extension direction to limit the movement of the adjusting seat 30 relative to the connecting body 10. The center of the circle containing the inner wall of the fourth arc-shaped hole 31 coincides with the axis of the second joint member 51. Through the above arrangement, the spaced arrangement of the two second limiting members 53 on the connecting body 10 and their movement within the fourth arc-shaped hole 31 set a clear boundary for the rotational movement of the adjusting seat 30 relative to the connecting body 10, that is, limiting the maximum rotational adjustment angle of the adjusting seat 30 relative to the connecting body 10. This ensures that the movement of the adjusting seat 30 does not exceed the expected range, avoiding possible structural damage or functional failure, especially in scenarios where heavy objects are carried or precise position control is required. Meanwhile, the cooperation between the second limiting member 53 and the fourth arc-shaped hole 31 effectively limits the shaking of the adjusting seat 30, improving the stability of the entire adjusting structure under heavy loads or complex environments. This fixing mechanism reduces working errors caused by excessive movement or accidental displacement, enhancing reliability.

[0035] like Figure 1 As shown, the second joint assembly 50 also includes a guide post 54, which is disposed on the adjusting seat 30. The connecting body 10 has a fifth arc-shaped hole 13, and the guide post 54 passes through the fifth arc-shaped hole 13 and is movably disposed along its extension direction. The center of the circle containing the inner wall of the fifth arc-shaped hole 13 coincides with the axis of the second joint component 51. This arrangement ensures the stability of the adjusting seat 30 when rotating relative to the connecting body 10, reducing wobbling and friction during rotation, thereby improving the positioning accuracy of the adjusting seat 30 at the preset position. This is crucial for applications requiring high-precision operation, such as the calibration of precision equipment or precise assembly on automated production lines. Simultaneously, the cooperation between the guide post 54 and the fifth arc-shaped hole 13 provides additional guidance and support for the movement trajectory of the adjusting seat 30, enhancing the stability of the entire two-degree-of-freedom adjusting structure. This stability is particularly critical for maintaining normal operation and extending the service life of the equipment under large loads or external forces.

[0036] In this embodiment, the connecting body 10 has two first through holes, and the fixing seat 20 has two second through holes. The first joint member 41 passes through the first and second through holes respectively, allowing the connecting body 10 and the fixing seat 20 to be rotatably connected. Thus, the two through holes and the first joint member 41 passing through them provide two independent rotation points between the connecting body 10 and the fixing seat 20, providing more stable support compared to single-point rotation. Furthermore, the two rotation points can better distribute the load, reducing wear on individual joint members and extending the service life of the overall structure. Simultaneously, it ensures the smoothness and consistency of the connecting body 10 during rotation, avoiding wobbling or jamming that may be caused by single-point rotation, which is particularly important for applications requiring fine adjustment.

[0037] In this embodiment, the connecting body 10 is provided with two third through holes, and the adjusting seat 30 is provided with two fourth through holes. The second joint member 51 passes through the third and fourth through holes respectively, so that the adjusting seat 30 is rotatably connected to the connecting body 10. By setting two independent rotation points, the connection between the connecting body 10 and the adjusting seat 30 is more stable, better able to bear and distribute loads, reducing wear and structural instability that may be caused by single-point stress, and improving the mechanical strength and durability of the entire device. It also helps to precisely control the rotation direction and angle of the adjusting seat 30, avoiding deviations that may be caused by single-point rotation, and ensuring accurate alignment of the adjusting seat 30 at a predetermined position, which is particularly important for applications requiring high-precision adjustment.

[0038] In this embodiment, the mounting base 20 is provided with multiple connection holes 22 for connection with the equipment body. This connection via multiple connection holes 22 allows for flexible installation of the adjustment structure on the equipment body, accommodating bodies of different thicknesses or shapes. It also enables the adjustment structure to be widely used in various devices, improving its versatility and adaptability, and reducing customization costs associated with specific installation requirements.

[0039] In this embodiment, the adjusting base 30 is provided with multiple clamping members 32 for connecting to the component to be adjusted. Thus, multiple clamping members 32 provide multiple fixing points distributed around the component to be adjusted, which offers higher stability and resistance to external interference than single-point fixing. Furthermore, the clamping members 32 can apply force evenly, preventing the component to be adjusted from moving or rotating during operation, ensuring its precise and stable position during adjustment. This ensures adaptability to clamping and fastening of different equipment bodies. Simultaneously, the design of multiple clamping members 32 allows for adaptation to components of different shapes, sizes, and materials. The operator can select the appropriate clamping member 32 according to the specific situation of the component to be adjusted, ensuring a firm connection between the clamping member and the component, increasing the versatility and flexibility of the adjustment structure.

[0040] In this application, in specific implementation, the fixed base 20 is connected to the equipment body through multiple connecting holes 22, and then the component to be adjusted is placed on the adjusting base 30 and fastened by multiple clamping parts 32. Then, the first joint assembly 40 and the second joint assembly 50 are adjusted respectively so that the relative angle between the fixed base 20, the connecting body 10 and the adjusting base 30 reaches the target requirement. Then, the first locking part 42 and the second locking part 52 are tightened respectively to stabilize the posture of the component to be adjusted relative to the equipment body to meet the application requirements.

[0041] As can be seen from the above description, the embodiments of this utility model achieve the following technical effects:

[0042] The two-degree-of-freedom adjustment structure includes a connecting body 10, a fixed base 20, an adjusting base 30, two first joint assemblies 40, and two second joint assemblies 50. The fixed base 20 and the adjusting base 30 are respectively connected to the connecting body 10. The fixed base 20 is used to connect to the equipment body, and the adjusting base 30 is used to connect to the component to be adjusted. Each of the two first joint assemblies 40 includes a first joint member 41. The connecting body 10 is connected to the fixed base 20 via the two first joint members 41, allowing the connecting body 10 to be rotatably arranged relative to the fixed base 20 about the axis of the first joint member 41. Each of the two second joint assemblies 50 includes a second joint member 51. The connecting body 10 is connected to the adjusting base 30 via the two second joint members 51, allowing the adjusting base 30 to be rotatably arranged relative to the connecting body 10 about the axis of the second joint member 51. The axes of the first joint member 41 and the second joint member 51 are perpendicular to each other. Thus, through the design of the first joint assemblies 40 and the second joint assemblies 50, adjustment of two degrees of freedom, namely independent rotation in two mutually perpendicular directions, can be achieved. This design allows for precise adjustment of the component to be adjusted along two axes in three-dimensional space, meeting the needs of more complex application scenarios. Compared to traditional complex adjustment mechanisms, the design employs two independent joint components to achieve rapid adjustment in two directions, simplifying the entire adjustment structure, reducing the number of parts, and thus lowering manufacturing costs and assembly difficulty. This addresses the issue of the relatively complex structure of existing degree-of-freedom adjustment mechanisms. Furthermore, both the independent first joint component 40 and the second joint component 50 can independently achieve adjustment in a single direction, and the operation is simple, allowing for rapid and precise adjustment, thus improving work efficiency.

[0043] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0044] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0045] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" 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 utility model and simplifying the description. Unless otherwise stated, these directional terms 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 on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0046] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0047] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A two-degree-of-freedom adjustment structure, characterized in that, include: Connecting main body (10); The fixed seat (20) and the adjusting seat (30) are respectively connected to the connecting body (10). The fixed seat (20) is used to connect to the equipment body, and the adjusting seat (30) is used to connect to the component to be adjusted. Two first joint assemblies (40) each include a first joint member (41), and the connecting body (10) is connected to the fixed seat (20) through the two first joint members (41) so that the connecting body (10) is rotatably disposed relative to the fixed seat (20) about the axis of the first joint member (41); Two second joint assemblies (50) each include a second joint member (51), and the connecting body (10) is connected to the adjusting seat (30) through the two second joint members (51) so that the adjusting seat (30) is rotatably disposed relative to the connecting body (10) about the axis of the second joint member (51); The axes of the first joint (41) and the second joint (51) are arranged perpendicular to each other.

2. The two-degree-of-freedom adjustment structure according to claim 1, characterized in that, The first joint assembly (40) further includes: A first locking member (42) is disposed on the fixed base (20). The connecting body (10) is provided with a first arc-shaped hole (11). The first locking member (42) passes through the first arc-shaped hole (11) and is movably disposed along its extension direction. At least a portion of the first locking member (42) is abutted against the opening edge of the first arc-shaped hole (11) so that the connecting body (10) is fixed when it rotates relative to the fixed base (20) to a preset position. The center of the circle containing the inner wall of the first arc-shaped hole (11) coincides with the axis of the first joint (41).

3. The two-degree-of-freedom adjustment structure according to claim 1, characterized in that, The first joint assembly (40) further includes: Two first limiting members (43) are respectively spaced apart on the connecting body (10), and the fixing seat (20) is provided with a second arc-shaped hole (21). The two first limiting members (43) are respectively inserted into the second arc-shaped hole (21) and are movably arranged along its extension direction to limit the movement of the connecting body (10) relative to the fixing seat (20). The center of the circle containing the inner wall of the second arc-shaped hole (21) coincides with the axis of the first joint (41).

4. The two-degree-of-freedom adjustment structure according to claim 1, characterized in that, The second joint assembly (50) also includes: A second locking member (52) is disposed on the adjusting seat (30). The connecting body (10) is provided with a third arc-shaped hole (12). The second locking member (52) passes through the third arc-shaped hole (12) and is movably disposed along its extension direction. At least a portion of the second locking member (52) is abutted against the opening edge of the third arc-shaped hole (12) so that the adjusting seat (30) is fixed when it rotates relative to the connecting body (10) to a preset position. The center of the circle containing the inner wall of the third arc-shaped hole (12) coincides with the axis of the second joint (51).

5. The two-degree-of-freedom adjustment structure according to claim 1, characterized in that, The second joint assembly (50) also includes: Two second limiting members (53) are respectively spaced apart on the connecting body (10). The adjusting seat (30) is provided with a fourth arc-shaped hole (31). The two second limiting members (53) are respectively inserted into the fourth arc-shaped hole (31) and are movably arranged along its extension direction to limit the movement of the adjusting seat (30) relative to the connecting body (10). The center of the circle containing the inner wall of the fourth arc-shaped hole (31) coincides with the axis of the second joint (51).

6. The two-degree-of-freedom adjustment structure according to claim 1, characterized in that, The second joint assembly (50) also includes: A guide post (54) is provided on the adjusting seat (30). The connecting body (10) is provided with a fifth arc-shaped hole (13). The guide post (54) passes through the fifth arc-shaped hole (13) and is movably provided along its extension direction. The center of the circle containing the inner wall of the fifth arc-shaped hole (13) coincides with the axis of the second joint (51).

7. The two-degree-of-freedom adjustment structure according to claim 1, characterized in that, The connecting body (10) is provided with two first through holes, and the fixing seat (20) is provided with two second through holes. The first joint (41) passes through the first through hole and the second through hole respectively, so that the connecting body (10) and the fixing seat (20) are rotatably connected relative to each other.

8. The two-degree-of-freedom adjustment structure according to claim 1, characterized in that, The connecting body (10) is provided with two third through holes, and the adjusting seat (30) is provided with two fourth through holes. The second joint (51) passes through the third through holes and the fourth through holes respectively, so that the adjusting seat (30) and the connecting body (10) are rotatably connected.

9. The two-degree-of-freedom adjustment structure according to claim 1, characterized in that, The mounting base (20) is provided with a plurality of connection holes (22) for connecting to the body of the device.

10. The two-degree-of-freedom adjustment structure according to claim 1, characterized in that, The adjusting seat (30) is provided with a plurality of clamping elements (32) for connecting with the component to be adjusted.

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