An angle-adjustable mounting bracket

CN224498131UActive Publication Date: 2026-07-14FIBERHOME TELECOMMUNICATION TECHNOLOGIES CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
FIBERHOME TELECOMMUNICATION TECHNOLOGIES CO LTD
Filing Date
2025-09-18
Publication Date
2026-07-14

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    Figure CN224498131U_ABST
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Abstract

The application relates to an angle-adjustable mounting bracket, a device part is used for forming a detachable connection with an outdoor AP device to realize device fixation, a mounting part is used for adaptively connecting with an external mounting carrier to complete overall fixation of the bracket, a rotating shaft part is connected between the device part and the mounting part and integrates a horizontal adjusting assembly and a vertical adjusting assembly which are perpendicular to each other; when the signal coverage direction of the outdoor AP device needs to be adjusted, the device part and the mounting part can be driven to relatively rotate along a horizontal direction through the horizontal adjusting assembly, the device part and the mounting part can be driven to relatively rotate along a vertical direction through the vertical adjusting assembly, and the device part drives the outdoor AP device to realize multi-angle adjustment in the horizontal and vertical directions through the cooperation of the horizontal adjusting assembly and the vertical adjusting assembly, thereby solving the problem that a traditional angle mounting bracket can only support angle adjustment in a single direction of the horizontal or vertical direction, and thus adapting to the demand of the AP device on different signal coverage directions under the outdoor complex environment.
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Description

Technical Field

[0001] This application relates to the field of communication equipment, specifically to an adjustable angle mounting bracket. Background Technology

[0002] Currently, with the rapid development of wireless network technology, outdoor Access Point (AP) products are being used more and more widely in scenarios such as public area coverage and outdoor communication network construction. The market demand for the deployment of outdoor AP products continues to grow. As a key supporting component for the stable installation and normal operation of outdoor AP products, the performance and practicality of the mounting bracket directly affect the deployment efficiency and usage effect of outdoor AP products. Therefore, mounting brackets with strong adaptability, convenient adjustment and reasonable cost have become an important demand direction in the field of outdoor AP product technology.

[0003] In related technologies, the adjustable angle mounting bracket used for outdoor AP devices can realize the angle adjustment function, which can be adapted to installation scenarios such as pole mounting or wall mounting, so as to meet the fixing needs of outdoor AP devices in different installation environments.

[0004] However, traditional angle mounting brackets can only support angle adjustment in a single horizontal or vertical direction, and cannot achieve multi-angle adjustment in both horizontal and vertical directions, making it difficult to adapt to the needs of AP devices for different signal coverage directions in complex outdoor environments. Summary of the Invention

[0005] This application provides an adjustable angle mounting bracket, which can solve the technical problem that traditional angle mounting brackets can only support angle adjustment in a single horizontal or vertical direction, and cannot achieve multi-angle adjustment in both horizontal and vertical directions, making it difficult to adapt to the different signal coverage directions of AP devices in complex outdoor environments.

[0006] This application provides an adjustable angle mounting bracket, which includes:

[0007] Equipment components for detachable connection to outdoor AP devices;

[0008] Mounting components are used for fitting and connecting with external mounting carriers;

[0009] A rotating shaft is connected between the device component and the mounting component, and the rotating shaft is provided with a horizontal adjustment component and a vertical adjustment component that are perpendicular to each other. The horizontal adjustment component can drive the device component and the mounting component to rotate relative to each other in the horizontal direction, and the vertical adjustment component can drive the device component and the mounting component to rotate relative to each other in the vertical direction, so as to realize multi-angle horizontal and vertical adjustment.

[0010] In one embodiment, the leveling component includes:

[0011] A pin is provided on the rotating shaft;

[0012] A through hole, which is adapted to the pin, and is provided in the device component;

[0013] The device component adjusts its relative angle with respect to the pivot component in the horizontal direction, using the pin as a pivot.

[0014] In one embodiment, the leveling component includes:

[0015] A through bolt, the two ends of which are detachably connected to the equipment component and the mounting component respectively, and the equipment component adjusts its relative angle with respect to the rotating shaft component in the horizontal direction with the through bolt as the pivot.

[0016] In one embodiment, the side wall of the rotating shaft is provided with a groove, and the groove communicates with the through hole through which the through bolt passes through the rotating shaft.

[0017] In one embodiment, the mounting component has a clamp through hole for the clamp to pass through, so as to fix the mounting component to the pole body to achieve pole mounting.

[0018] In one embodiment, the mounting component is provided with protrusions that abut against the surface of the pole body during pole installation to accommodate pole bodies within a set diameter range and improve the stability of the connection between the mounting component and the pole body.

[0019] In one embodiment, the mounting component has a wall-mounting screw through hole for a fixing screw to pass through, so as to fix the mounting component to the wall and achieve wall-mounting installation.

[0020] In one embodiment, the adjustable angle mounting bracket further includes:

[0021] Fasteners are used to lock the relative angle between the device and the mounting component after angle adjustment is completed by the horizontal adjustment component and the vertical adjustment component.

[0022] In one embodiment, the fastener includes:

[0023] The locking bolt has an arc-shaped hole that matches the connection between the shaft and the equipment part, and the connection between the shaft and the mounting part. Locking is achieved by the cooperation between the locking bolt and the arc-shaped hole.

[0024] In one embodiment, along the extension direction of the arc-shaped hole, both the device component and the mounting component are provided with an arc-shaped angle scale, and the rotating shaft component is correspondingly provided with a scale indicator needle.

[0025] The beneficial effects of the technical solutions provided in this application include:

[0026] The device component is used to form a detachable connection with outdoor AP devices to fix the device. The mounting component is used to adapt and connect with an external mounting carrier to complete the overall fixation of the bracket. The rotating shaft connects the device component and the mounting component and integrates mutually perpendicular horizontal adjustment components and vertical adjustment components. When it is necessary to adjust the signal coverage direction of the outdoor AP device, the horizontal adjustment component can drive the device component and the mounting component to rotate relative to each other in the horizontal direction, and the vertical adjustment component can drive the device component and the mounting component to rotate relative to each other in the vertical direction. With the synergistic effect of the horizontal and vertical adjustment components, the device component can drive the outdoor AP device to achieve multi-angle adjustment in the horizontal and vertical directions. This solves the problem that traditional angle mounting brackets can only support angle adjustment in a single horizontal or vertical direction, thus adapting to the needs of AP devices for different signal coverage directions in complex outdoor environments and improving the environmental adaptability and usage flexibility of the mounting bracket. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying 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.

[0028] Figure 1 A schematic diagram of an adjustable angle mounting bracket is provided for an embodiment of this application.

[0029] Figure 2 This document provides a schematic diagram of the structure of an adjustable angle mounting bracket according to another embodiment of this application.

[0030] In the diagram: 1. Equipment component; 2. Mounting component; 21. Clamp through hole; 22. Wall mounting screw through hole; 3. Shaft component; 31. Groove; 4. Horizontal adjustment assembly; 41. Pin; 42. Through bolt; 5. Vertical adjustment assembly; 6. Fastener; 61. Locking bolt; 62. Arc-shaped hole; 7. Arc-shaped angle scale; 8. Scale indicator needle. Detailed Implementation

[0031] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0032] Currently, with the rapid development of wireless network technology, outdoor Access Point (AP) products are being used more and more widely in scenarios such as public area coverage and outdoor communication network construction. The market demand for the deployment of outdoor AP products continues to grow. As a key supporting component for the stable installation and normal operation of outdoor AP products, the performance and practicality of the mounting bracket directly affect the deployment efficiency and usage effect of outdoor AP products. Therefore, mounting brackets with strong adaptability, convenient adjustment and reasonable cost have become an important demand direction in the field of outdoor AP product technology.

[0033] Among them, the adjustable angle mounting bracket used for outdoor AP devices can realize the angle adjustment function, which can be adapted to installation scenarios such as pole mounting or wall mounting, so as to meet the fixing needs of outdoor AP devices in different installation environments.

[0034] However, traditional angle mounting brackets can only support angle adjustment in a single horizontal or vertical direction, and cannot achieve multi-angle adjustment in both horizontal and vertical directions, making it difficult to adapt to the needs of AP devices for different signal coverage directions in complex outdoor environments.

[0035] This application provides an adjustable angle mounting bracket, which can solve the technical problem that traditional angle mounting brackets can only support angle adjustment in a single horizontal or vertical direction, and cannot achieve multi-angle adjustment in both horizontal and vertical directions, making it difficult to adapt to the different signal coverage directions of AP devices in complex outdoor environments.

[0036] like Figure 1 and Figure 2 As shown in the figure, this application embodiment provides an adjustable angle mounting bracket, which includes: a device 1 for detachable connection with an outdoor AP device; a mounting 2 for adaptive connection with an external mounting carrier; and a rotating shaft 3 connected between the device 1 and the mounting 2. The rotating shaft 3 is provided with a horizontal adjustment component 4 and a vertical adjustment component 5 that are perpendicular to each other. The horizontal adjustment component 4 can drive the device 1 and the mounting 2 to rotate relative to each other in the horizontal direction, and the vertical adjustment component 5 can drive the device 1 and the mounting 2 to rotate relative to each other in the vertical direction, so as to realize horizontal and vertical multi-angle adjustment.

[0037] In this embodiment, a device 1, a mounting component 2, and a rotating shaft 3 are provided. The device 1 is used to form a detachable connection with the outdoor AP device to fix the device. The mounting component 2 is used to adapt and connect with an external mounting carrier to complete the overall fixation of the bracket. The rotating shaft 3 connects the device 1 and the mounting component 2 and integrates a horizontal adjustment component 4 and a vertical adjustment component 5 that are perpendicular to each other. When it is necessary to adjust the signal coverage direction of the outdoor AP device, the horizontal adjustment component 4 can drive the device 1 and the mounting component 2 to rotate relative to each other in the horizontal direction, and the vertical adjustment component 5 can drive the device 1 and the mounting component 2 to rotate relative to each other in the vertical direction. With the synergistic effect of the horizontal adjustment component 4 and the vertical adjustment component 5, the device 1 can drive the outdoor AP device to achieve multi-angle adjustment in the horizontal and vertical directions. This solves the problem that traditional angle mounting brackets can only support angle adjustment in a single horizontal or vertical direction, thereby adapting to the needs of AP devices for different signal coverage directions in complex outdoor environments and improving the environmental adaptability and usage flexibility of the mounting bracket.

[0038] In one implementation, such as Figure 1 As shown, the horizontal adjustment component 4 includes: a pin 41, which is disposed on the rotating shaft 3; a through hole, which is adapted to the pin 41 and is opened in the device component 1; the device component 1 adjusts the relative angle with respect to the rotating shaft 3 in the horizontal direction with the pin 41 as the rotating axis.

[0039] In this embodiment, the horizontal adjustment component 4 includes a pin 41 disposed on the rotating shaft 3 and a through hole opened on the device component 1 and adapted to the pin 41. The device component 1 is sleeved on the pin 41 through the through hole, so that the device component 1 can rotate horizontally relative to the rotating shaft 3 with the pin 41 as the pivot to adjust the relative angle. Through this structural arrangement, the cooperation between the pin 41 and the through hole forms a horizontal rotation fulcrum, realizing the horizontal angle adjustment between the device component 1 and the rotating shaft 3, thereby driving the outdoor AP device to adjust the signal coverage angle in the horizontal direction, improving the structural stability and operational convenience of the horizontal angle adjustment.

[0040] In one implementation, such as Figure 2 As shown, the horizontal adjustment component 4 includes a through bolt 42, the two ends of which are detachably connected to the equipment component 1 and the mounting component 2 respectively. The equipment component 1 adjusts its relative angle with respect to the rotating shaft component 3 in the horizontal direction with the through bolt 42 as the pivot.

[0041] In this embodiment, the horizontal adjustment component 4 includes a through bolt 42. The two ends of the through bolt 42 are detachably connected to the device component 1 and the mounting component 2, respectively. The device component 1 can rotate horizontally relative to the pivot component 3 with the through bolt 42 as the pivot to adjust the relative angle. The through bolt 42 connects the device component 1 and the mounting component 2 to form a horizontal rotation support structure, so that the device component 1 can adjust the horizontal angle around the axis of the through bolt 42. This structure realizes the dual functions of rotation fulcrum and connection fixation with a single bolt. While ensuring the stability of horizontal angle adjustment, it simplifies the assembly process, thereby enabling outdoor AP devices to flexibly adjust the signal coverage angle in the horizontal direction.

[0042] In one implementation, such as Figure 2 As shown, the side wall of the rotating shaft 3 has a groove 31, and the groove 31 is connected to the through hole of the rotating shaft 3 by the through bolt 42.

[0043] In this embodiment, the side wall of the rotating shaft 3 is provided with a groove 31, which is connected to the through hole of the through bolt 42 passing through the rotating shaft 3. The groove 31 provides operating space for the assembly and adjustment of the through bolt 42, and facilitates the insertion and tightening adjustment of the through bolt 42.

[0044] In one implementation, such as Figure 1 and Figure 2 As shown, the mounting component 2 has a clamp through hole 21, which is used for the clamp to pass through, so as to fix the mounting component 2 on the pole body to realize the pole mounting.

[0045] In this embodiment, the mounting component 2 has a clamp through hole 21 for the clamp to pass through. When pole mounting is required, the clamp passes through the clamp through hole 21 and can fasten the mounting component 2 to the external pole. The clamp and clamp through hole 21 cooperate to form a stable connection between the mounting component 2 and the pole, thereby fixing the entire adjustable angle mounting bracket on the pole. This structure is suitable for the deployment requirements of outdoor scenes where the pole is used as the mounting carrier, and improves the adaptability of the mounting bracket to different installation environments.

[0046] In one embodiment, the mounting member 2 is provided with protrusions, which are used to abut against the surface of the pole body during pole installation to adapt to pole bodies within a set diameter range and improve the stability of the connection between the mounting member 2 and the pole body.

[0047] In this embodiment, the mounting component 2 is provided with protrusions. When the pole is installed by passing the clamp through the hole 21, the protrusions abut against the surface of the pole. Through the contact and cooperation between the protrusions and the surface of the pole, it can adapt to poles within a set diameter range, increase the friction between the mounting component 2 and the pole, limit the relative sliding of the mounting component 2 relative to the pole, thereby improving the stability of the connection between the mounting component 2 and the pole, and ensuring the structural reliability of the entire adjustable angle mounting bracket in the pole installation scenario.

[0048] Furthermore, there are four protrusions arranged in a rectangular array on the side of the mounting component 2 facing the pole. This rectangular array of four protrusions creates uniform contact support points on the pole surface, resulting in a more balanced force distribution between the mounting component 2 and the pole. This prevents loosening caused by concentrated local forces, further enhancing the structural stability during pole installation. It also accommodates poles with different cross-sectional dimensions, improving installation adaptability.

[0049] In one implementation, such as Figure 1 and Figure 2 As shown, the mounting component 2 has a wall-mounting screw through hole 22, which is used for the fixing screw to pass through, so as to fix the mounting component 2 to the wall to achieve wall-mounting installation.

[0050] In this embodiment, the mounting component 2 has a wall-mounting screw through hole 22, which is used for the fixing screw to pass through. When wall-mounting is required, the fixing screw can be fastened to the external wall after passing through the wall-mounting screw through hole 22. The fixing screw and the wall-mounting screw through hole 22 cooperate to form a stable connection between the mounting component 2 and the wall, thereby realizing the fixation of the entire adjustable angle mounting bracket on the wall. This structure cooperates with the clamp through hole 21 to enable the mounting component 2 to adapt to both pole mounting and wall-mounting installation scenarios, improving the adaptability of the mounting bracket to different outdoor installation carriers.

[0051] In one implementation, such as Figure 1 and Figure 2 As shown, the adjustable angle mounting bracket also includes a fastener 6, which is used to lock the relative angle between the device 1 and the mounting part 2 after the angle adjustment is completed by the horizontal adjustment component 4 and the vertical adjustment component 5.

[0052] In this embodiment, the adjustable angle mounting bracket also includes a fastener 6. When the device 1 and the mounting part 2 are adjusted to the target angle in the horizontal direction by the horizontal adjustment component 4 and in the vertical direction by the vertical adjustment component 5, the fastener 6 is used to lock the relative angle between the device 1 and the mounting part 2. This prevents the device 1 and the mounting part 2 from rotating relative to each other in outdoor environments (such as wind, vibration, etc.) and causing angle deviation. This ensures that the outdoor AP device always maintains the preset signal coverage angle, thus guaranteeing the stability of the device operation and the signal coverage effect.

[0053] In one implementation, such as Figure 1 and Figure 2 As shown, the fastener 6 includes a locking bolt 61. The connection between the rotating shaft 3 and the equipment part 1, and the connection between the rotating shaft 3 and the mounting part 2, are all provided with arc-shaped holes 62 that are adapted to the locking bolt 61. Locking is achieved by the cooperation between the locking bolt 61 and the arc-shaped holes 62.

[0054] In this embodiment, the connection between the rotating shaft 3 and the equipment component 1, and the connection between the rotating shaft 3 and the mounting component 2, are both provided with arc-shaped holes 62 that are adapted to the locking bolt 61. After the angle adjustment is completed by the horizontal adjustment component 4 and the vertical adjustment component 5, the locking bolt 61 passes through the arc-shaped hole 62 and is tightened. Through the cooperation between the locking bolt 61 and the arc-shaped hole 62, the relative positions between the equipment component 1 and the rotating shaft 3, and between the rotating shaft 3 and the mounting component 2 are locked, thereby fixing the relative angle between the equipment component 1 and the mounting component 2. The trajectory of the arc-shaped hole 62 is adapted to the displacement path during the angle adjustment process, which not only provides room for angle adjustment, but also restricts the relative rotation of each component by the pressure of the locking bolt 61 after locking, ensuring the reliability of the angle locking.

[0055] In one implementation, such as Figure 1 and Figure 2 As shown, along the extension direction of the arc-shaped hole 62, both the equipment component 1 and the mounting component 2 are provided with arc-shaped angle scales 7, and the rotating shaft component 3 is provided with scale pointers 8.

[0056] In this embodiment, along the extension direction of the arc-shaped hole 62, both the device component 1 and the mounting component 2 are provided with an arc-shaped angle scale 7, and the rotating shaft component 3 is correspondingly provided with a scale indicator needle 8. When the angle is adjusted by the horizontal adjustment component 4 and the vertical adjustment component 5, the scale indicator needle 8 moves with the relative rotation of the rotating shaft component 3 and the device component 1 and the mounting component 2, and points to the corresponding scale value on the arc-shaped angle scale 7. This can intuitively display the angle adjustment amount of the device component 1 and the mounting component 2 in the horizontal and vertical directions, realize the quantitative control of the angle adjustment, facilitate the operator to accurately adjust to the preset angle, improve the accuracy and efficiency of the angle adjustment, and at the same time ensure the angle consistency of multiple sets of mounting brackets when deployed in batches.

[0057] In one implementation, such as Figure 1 As shown, the horizontal adjustment component 4 is located to the left of the fastener 6 on the device component 1, and the positions of the two can be interchanged, i.e., as shown... Figure 2 As shown, the horizontal adjustment component 4 is swapped to the right side of the fastener 6.

[0058] In one embodiment, the positions of the vertical adjustment assembly 5 and the fasteners 6 on the mounting piece 2 can also be interchanged.

[0059] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this 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, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0060] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0061] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. An adjustable angle mounting bracket, characterized in that, It includes: Equipment component (1), which is used for detachable connection with outdoor AP-type equipment; Mounting component (2), which is used to be adapted and connected to an external mounting carrier; A rotating shaft (3) is connected between the device (1) and the mounting (2), and the rotating shaft (3) is provided with a horizontal adjustment component (4) and a vertical adjustment component (5) that are perpendicular to each other. The horizontal adjustment component (4) can drive the device (1) and the mounting (2) to rotate relative to each other in the horizontal direction, and the vertical adjustment component (5) can drive the device (1) and the mounting (2) to rotate relative to each other in the vertical direction, so as to realize horizontal and vertical multi-angle adjustment.

2. The adjustable angle mounting bracket as described in claim 1, characterized in that, The horizontal adjustment component (4) includes: Pin (41), which is provided on the pivot (3); A through hole, which is adapted to the pin (41) and is provided in the device (1). The device component (1) adjusts its relative angle with respect to the pivot component (3) in the horizontal direction with the pin (41) as the pivot.

3. The adjustable angle mounting bracket as described in claim 1, characterized in that, The horizontal adjustment component (4) includes: Through bolt (42), the two ends of which are detachably connected to the equipment component (1) and the mounting component (2) respectively, and the equipment component (1) adjusts the relative angle with respect to the rotating shaft component (3) in the horizontal direction with the through bolt (42) as the pivot.

4. The adjustable angle mounting bracket as described in claim 3, characterized in that, The side wall of the rotating shaft (3) is provided with a groove (31), and the groove (31) is connected to the through hole of the rotating shaft (3) by the through bolt (42).

5. The adjustable angle mounting bracket as described in claim 1, characterized in that, The mounting component (2) has a clamp through hole (21) for the clamp to pass through, so as to fix the mounting component (2) on the pole body to realize the pole mounting.

6. The adjustable angle mounting bracket as described in claim 5, characterized in that, The mounting component (2) is provided with protrusions, which are used to abut against the surface of the pole body during pole installation to adapt to pole bodies within a set diameter range and improve the stability of the connection between the mounting component (2) and the pole body.

7. The adjustable angle mounting bracket as described in claim 1, characterized in that, The mounting component (2) has a wall-mounting screw through hole (22), which is used for the fixing screw to pass through so as to fix the mounting component (2) on the wall to achieve wall-mounting installation.

8. The adjustable angle mounting bracket as described in claim 1, characterized in that, The adjustable angle mounting bracket also includes: Fastener (6) is used to lock the relative angle between the device (1) and the mounting (2) after the angle adjustment is completed by the horizontal adjustment component (4) and the vertical adjustment component (5).

9. The adjustable angle mounting bracket as described in claim 8, characterized in that, The fastener (6) includes: The locking bolt (61), the connection part between the rotating shaft (3) and the equipment part (1), and the connection part between the rotating shaft (3) and the mounting part (2) are all provided with arc-shaped holes (62) that are adapted to the locking bolt (61). Locking is achieved by the cooperation between the locking bolt (61) and the arc-shaped hole (62).

10. The adjustable angle mounting bracket as described in claim 9, characterized in that, Along the extension direction of the arc-shaped hole (62), both the device component (1) and the mounting component (2) are provided with an arc-shaped angle scale (7), and the rotating shaft component (3) is provided with a scale indicator needle (8).