Rotating mechanism, infrared sensor and electronic equipment
By designing a rotating mechanism including an inclined contact surface, the problem that existing electronic devices are difficult to achieve large-scale angular rotation is solved, and the application flexibility of the equipment is improved.
Patent Information
- Application Number
- CN202420004859.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-02
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-01-02
AI Technical Summary
Existing electronic devices, such as human infrared sensors, are difficult to achieve large-scale angle rotation and cannot meet the needs of practical application scenarios.
A rotating mechanism is designed, including a first rotating body and a second rotating body, and a rotatable tight connection is made through the first rotating shaft, and a large-scale angle adjustment is achieved using the inclined contact surface.
It realizes large-scale angular rotation of electronic devices, enhancing the application flexibility of the device in different scenarios and locations.
Smart Images
Figure CN222482433U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of electronic equipment, in particular to a rotating mechanism, an infrared sensor and electronic equipment. Background Art
[0002] In actual applications, many products on the market need to dynamically adjust the direction of alignment, such as human infrared sensors, detection lights, antenna devices or other electronic devices. Therefore, the structure of these electronic devices needs to be designed to meet the requirements of dynamic adjustment of alignment in different directions.
[0003] Take the human infrared sensor as an example. Since the human infrared sensor is used to detect whether there is unauthorized entry, it is frequently used in security systems. Among them, in order to achieve all-round detection of the human infrared sensor, it is necessary to make the detection surface of the human infrared sensor (one end of the infrared emission and infrared reception) meet the security detection of different scenes and different positions as much as possible. However, most of the current actual product structures are not able to achieve a wide range of angle rotation, making it difficult for existing products to meet the needs of actual application scenarios. Utility Model Content
[0004] The purpose of the utility model is to overcome the defects of the prior art and provide a rotating mechanism, an infrared sensor and an electronic device.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] A rotating mechanism comprises: a first rotating body and a second rotating body;
[0007] The first end of the first rotating body is provided with a first contact surface which is inclined, and the first end of the second rotating body is provided with a second contact surface;
[0008] The first rotating body and the second rotating body are rotatably tightly connected via a first rotating shaft, and the first contact surface is in close contact with the second contact surface;
[0009] Wherein, the first contact surface and the second contact surface are arranged perpendicularly to the axis of the first rotating shaft.
[0010] Preferably, the second contact surface is also an inclined surface, and the inclination angle of the second contact surface is the same as the inclination angle of the first contact surface.
[0011] Preferably, a second shaft connection hole recessed into the second rotating body is provided at the center of the second contact surface, and the second end of the first rotating shaft is fixed in the second shaft connection hole;
[0012] A first shaft connecting hole recessed into the first rotating body is disposed at the center of the first contact surface, and the first end of the first rotating shaft is rotatably disposed in the first shaft connecting hole.
[0013] Preferably, the first end of the first rotating shaft is further provided with a first limiting structure for limiting the axial position of the first rotating shaft, and the first rotating body is provided with a second limiting structure cooperating with the first limiting structure.
[0014] Preferably, the first limiting structure is a ball head that extends axially from the first end of the first rotating shaft into the first rotating body, and the first rotating body is provided with a first inner cavity that is connected to the first shaft connecting hole. The second limiting structure is a ball head limiting seat that is arranged in the first inner cavity, and the ball head limiting seat is provided with a plurality of ball head buckles that are arranged in an annular manner corresponding to the shape of the ball head. The ball head is clamped in the ball head buckle and can rotate freely.
[0015] Preferably, the second contact surface is provided with a second circular sunken groove coaxial with the second shaft connecting hole, and the first rotating shaft is provided with a radially extending annular boss at a position corresponding to the second circular sunken groove, and the annular boss is arranged in the second circular sunken groove.
[0016] Preferably, the first contact surface is provided with a first circular sunken groove coaxial with the first shaft connecting hole, and the annular boss portion is arranged in the first circular sunken groove.
[0017] Preferably, a base is also provided at the second end of the first rotating body, the second end of the first rotating body is rotatably connected to the base, the axis of the first rotating body is perpendicular to the bottom plane of the base, and the first contact surface and the second contact surface are inclined relative to the bottom plane of the base.
[0018] Preferably, a protruding second rotating shaft is provided on the surface of the base, the second rotating shaft is provided with an annular limiting groove, the second rotating shaft and the first rotating shaft are inclined relative to the second rotating shaft, and the second rotating shaft is rotatably connected to the annular limiting groove.
[0019] Preferably, the second end of the first rotating body is provided with at least one pair of relatively arranged limiting buckles, the limiting buckles are inserted into the limiting grooves, and the limiting buckles can slide in the limiting grooves.
[0020] Preferably, the first rotating body is an elliptical cylinder, the second rotating body is also an elliptical cylinder, the first contact surface is a perfect circular surface formed by the outer peripheral wall of the first rotating body, the second contact surface is a perfect circular surface formed by the outer peripheral wall of the second rotating body, and the first contact surface and the second contact surface are the same size.
[0021] The utility model also provides an infrared sensor, comprising a sensor component and any one of the above-mentioned rotating mechanisms; the second rotating body of the rotating mechanism is provided with the sensor component.
[0022] Preferably, the second rotating body is provided with a second inner cavity which is opened at the second end and extends toward the first end, and the sensor assembly is arranged in the second inner cavity.
[0023] Preferably, the sensor assembly includes a power circuit board assembly and a closing cover, the power circuit board assembly includes a circuit board, an infrared transmitter, an infrared receiver, a battery and a communication module; the closing cover includes a closing cover frame and an optical lens, and the optical lens is arranged on the closing cover frame; the power circuit board assembly is arranged inside the second inner cavity, and the closing cover is covered at the second end opening of the second rotating body.
[0024] Preferably, the closing cover also includes a limiting pressure plate, the outer wall of the limiting pressure plate is fixed to the inner wall of the closing cover frame, the edge of the limiting pressure plate is provided with a plurality of pressure plate connecting buckles, the inner cavity wall of the second rotating body is provided with a plurality of pressure plate connecting positions, and the closing cover is connected by the plurality of pressure plate connecting buckles and the plurality of pressure plate connecting positions.
[0025] Preferably, the limiting pressure plate also includes a plurality of limiting pressure columns extending toward the direction of the power circuit board assembly, and the plurality of limiting pressure columns include at least one conductive connector; one end of the conductive connector abuts against the circuit board to connect to the circuit path of the communication module, and the other end is connected to the antenna conductive wire.
[0026] The utility model also provides an electronic device, comprising an electronic component and any one of the above described rotating mechanisms; the second rotating body of the rotating mechanism is provided with a mounting structure for mounting the electronic component.
[0027] In the rotating mechanism of the embodiment of the utility model, the first rotating body and the second rotating body are in contact through a contact surface, and are connected through a rotating shaft at the contact surface, and the rotating surface thereof is the contact surface. Since the second contact surface is an inclined surface, the angle of the second rotating body can be adjusted when the second rotating body rotates.
[0028] Furthermore, the first rotating body is also an inclined surface, and has the same inclination angle as the second rotating body, so that the angle adjustment range of the second rotating body can be changed relative to the axis of the first rotating body, thereby increasing the angle adjustment range of the second rotating body.
[0029] Furthermore, a rotatable base is also provided at the second end of the first rotating body, which further increases the adjustable range of the second rotating body. BRIEF DESCRIPTION OF THE DRAWINGS
[0030] Figure 1It is a structural schematic diagram of the rotating mechanism (infrared sensor) of the embodiment of the utility model;
[0031] Figure 2 It is a schematic diagram of the structural decomposition of the rotating mechanism (infrared sensor) of the embodiment of the utility model;
[0032] Figure 3 It is a schematic structural diagram of the second rotating body of the embodiment of the utility model;
[0033] Figure 4 It is a schematic structural diagram of the first rotating body of the embodiment of the utility model;
[0034] Figure 5 yes Figure 4 AA section view;
[0035] Figure 6 It is a structural schematic diagram of the base of the utility model embodiment;
[0036] Figure 7 It is a structural schematic diagram of the closed cover of an embodiment of the utility model.
[0037] The reference numerals in the figures are as follows:
[0038] Base 10;
[0039] The first rotating body 20, the first contact surface 21, the first shaft connecting hole 22, the first circular sinking groove 23, the ball head limiting seat 24, the ball head buckle 241, the chassis 270, the chassis connecting buckle 271, the chassis connecting slot 272, and the limiting buckle 27;
[0040] A second rotating body 30, a second contact surface 31, a second shaft connecting hole 32, and a second circular sinking groove 33;
[0041] Rotating shaft 40, ball head 41, annular boss 43;
[0042] A second rotating shaft 50 and a limiting groove 51;
[0043] Power supply circuit board assembly 60, circuit board 61, battery 62;
[0044] The closing cover 70 , the closing cover frame 71 , the optical lens 72 , the limiting pressure plate 73 , the pressure plate connecting buckle 730 , the closing cover connecting buckle 733 , the closing cover connecting position 713 , the limiting pressure column 732 , and the conductive connector 7320 . DETAILED DESCRIPTION
[0045] The following embodiments are given in conjunction with the accompanying drawings to further illustrate the specific implementation of the rotating mechanism of the present utility model. The rotating mechanism of the present utility model is not limited to the description of the following embodiments.
[0046] This embodiment provides a specific embodiment of a rotating mechanism, which is mainly used in some electronic devices to provide a wide range of angle adjustments so that the electronic devices meet the requirements of specific application scenarios.
[0047] like Figure 1-2 As shown, the rotating mechanism includes: a first rotating body 20 and a second rotating body 30; a first end of the first rotating body 20 is provided with a first contact surface 21 which is inclined, that is, the first contact surface 21 is not perpendicular to the axis of the first rotating body 20, and a second contact surface 31 is provided at the first end of the second rotating body 30; the first rotating body 20 and the second rotating body 30 are rotatably tightly connected through a first rotating shaft 40, and the first contact surface 21 is in close contact with the second contact surface 31; wherein, the first contact surface 21 and the second contact surface 31 are perpendicularly arranged relative to the axis of the first rotating shaft 40.
[0048] In this embodiment, the first rotating body 20 and the second rotating body 30 are rotatably tightly connected through the first rotating shaft 40, which means that when an external force twists the second rotating body 30 or the first rotating body 20, the two can rotate relative to each other, and when there is no external force twisting, the two maintain the current state through the connection friction with the rotating shaft 40. Generally speaking, when there is no external force, the second rotating body 30 can use friction to maintain its own state, including the use state.
[0049] In this embodiment, the second contact surface 31 is also an inclined surface, and the inclination angle of the second contact surface 31 is the same as the inclination angle of the first contact surface 21. At this time, the first contact surface 21 and the second contact surface 31 are not perpendicular to the axis of the first rotating body 21 and the axis of the second rotating body 30, but are inclined at a non-perpendicular angle. Of course, the first contact surface 21 can also be a non-inclined plane, and the second contact surface 31 can change within a certain angle range by rotating, but it can only rotate relative to the axis of the first rotating body 21. The angle cannot be changed relative to the axis direction of the first rotating body 21. At this time, the first rotating shaft 40 is coaxial with the axis of the first rotating body 21. If the first contact surface 21 is set as an inclined surface, when the second rotating body 30 rotates, it can form an angle change with the axis of the first rotating body 20. When the inclination angles of the first contact surface 21 and the second contact surface 31 are the same, the axes of the first rotating body 20 and the second rotating body 30 can be coaxial.
[0050] In this embodiment, if Figure 2 and 3 As shown, a second shaft connection hole 32 recessed into the second rotating body 30 is provided at the center of the second contact surface 31, and the second end of the first rotating shaft 40 is fixed in the second shaft connection hole 32; Figure 4 and Figure 5As shown, a first shaft connecting hole 22 recessed into the first rotating body 20 is provided at the center of the first contact surface 21, and the first end of the first rotating shaft 40 is rotatably provided in the first shaft connecting hole 22; the first end of the first rotating shaft 40 is also provided with a first limiting structure for limiting the axial position of the first rotating shaft 40, and the first rotating body 20 is provided with a second limiting structure cooperating with the first limiting structure.
[0051] Specifically, the first limiting structure is a ball head 41 extending axially from the first end of the first rotating shaft 40 into the first rotating body 20, the first rotating body 20 is provided with a first inner cavity 29 connected to the first shaft connecting hole 22, and the second limiting structure is a ball head limiting seat 24 fixedly provided in the first inner cavity 29, the ball head limiting seat 24 is provided with a plurality of ball head buckles 241 arranged in an annular shape corresponding to the shape of the ball head 41, and the ball head 41 is clamped in the ball head buckle 241 and can rotate freely. Since the ball head buckle 241 is arranged in a plurality of annular shapes, a space that can wrap the ball head is formed, and the insertion end of the space is smaller than the diameter of the ball head, thereby forming a limit for the ball head (i.e., forming an axial limit for the rotating shaft 40), and the ball head can be inserted into the space surrounded by the ball head buckle by using the elastic force of the ball head buckle 241. The structure of the ball head buckle 241 can form a good limit on the axial direction of the rotating shaft 40. However, since the contact area between the ball head buckle 241 and the ball head is small, it will not have a significant impact on the rotation of the rotating shaft 40. Under the action of appropriate external force, the friction force of the ball head buckle 241 can still be overcome.
[0052] In this embodiment, if Figure 3 As shown, the second contact surface 31 is provided with a second circular sinking groove 33 coaxial with the second shaft connecting hole 32. Figure 4 and Figure 5 As shown, the first rotating shaft 40 is provided with a radially extending annular boss 43 at a position corresponding to the second circular sinking groove 33, and the annular boss 43 is arranged in the second circular sinking groove 33. The setting of the annular boss 43 can further limit the radial position of the rotating shaft. At the same time, since the first rotating body 20 is provided with the first inner cavity 29, the thickness of the first shaft connecting hole 22 is affected, and thus its structure is affected. In order to avoid the deviation of the rotating shaft 40 caused by deformation, the addition of the annular boss 43 can improve the radial limiting effect of the rotating shaft 40.
[0053] Furthermore, the first contact surface 21 is provided with a first circular sunken groove 23 coaxial with the first shaft connection hole 22, and the annular boss 43 is partially provided in the first circular sunken groove 23. By providing the annular boss 43, as well as the first circular sunken groove 23 and the second circular sunken groove 33, the structural area of the rotating shaft 40 subjected to the greatest shear force is structurally reinforced, thereby further improving the overall structural stability. The provision of the annular boss 43 can also add multiple limiting surfaces to achieve multi-directional limiting, and when the second rotating body 30 rotates, rotational jitter can be avoided.
[0054] In this embodiment, Figure 4-6 The second end of the first rotating body 20 is also provided with a base 10, and the second end of the first rotating body 20 is rotatably connected to the base 10. The first rotating body 20 can rotate relative to the base 10, further increasing the range of angle adjustment. The axis of the first rotating body 20 is perpendicular to the bottom plane of the base 10, and the first contact surface 21 and the second contact surface 31 are inclined relative to the bottom plane of the base 10, that is, they are inclined at a non-parallel and non-vertical angle.
[0055] As a specific implementation method, Figure 5 and Figure 6 As shown, the surface of the base 10 is provided with a protruding second rotating shaft 50, and the second rotating shaft 50 is provided with an annular limiting groove 51. The second rotating shaft 50 and the first rotating shaft 40 are arranged obliquely relative to the second rotating shaft 50, and the two are neither parallel nor perpendicular. The second rotating shaft 50 and the annular limiting groove 51 are rotatably connected. The second end of the first rotating body 20 is provided with at least one pair of relatively arranged limiting buckles 27, and the limiting buckles 27 are inserted into the limiting groove 51, and the limiting buckles 27 can slide in the limiting groove 51, that is, the base 10 can rotate under the limitation of the limiting buckles 27 through the second rotating shaft 50. Generally speaking, the limiting buckle 27 is clamped in the limiting groove 51 by elastic force, and the base 10 will not rotate relative to the first rotating body 20 without being twisted by external force.
[0056] As a preferred embodiment, the limiting buckles 27 are arranged in multiple annular shapes to limit multiple points of the annular limiting groove 51 to ensure that no deviation occurs during the rotation process.
[0057] For the purpose of process realization and cost control, the limit buckle 27 is arranged on a chassis 270, the outer periphery of the chassis 270 is provided with a chassis connection buckle 271, the inner cavity of the first rotating body 20 is provided with a chassis connection slot 272, and the chassis 270 is fixed at a position near the opening of the inner cavity of the first rotating body 20. Furthermore, the ball head limit seat 24 can be fixed to the chassis 270 by hot melting to form an integral body and then installed in the inner cavity of the first rotating body 20.
[0058] In this embodiment, the first rotating body 20 is an elliptical cylinder, the second rotating body 30 is also an elliptical cylinder, the first contact surface 21 is a perfect circular surface formed by the outer peripheral wall of the first rotating body 20, the second contact surface 31 is a perfect circular surface formed by the outer peripheral wall of the second rotating body 30, and the first contact surface 21 and the second contact surface 31 are the same size. In this way, when the second rotating body 30 rotates, the first contact surface 21 and the second contact surface 31 always cover each other, so as to prevent dust from falling onto the contact surface and affecting the subsequent rotation during angle adjustment.
[0059] Based on the above embodiment of the rotating mechanism, Figure 1-2 As shown, the utility model also provides a specific embodiment of an infrared sensor, including a sensor component as a rotating mechanism as described above; the second rotating body 30 is provided with a second inner cavity 39 formed by its second end opening and extending toward the first end, and the sensor component is arranged in the second inner cavity 39.
[0060] Of course, in this embodiment, the second inner cavity 39 can be implemented by another structure, not necessarily on the second rotating body 30 , for example, it can be implemented by a column connected to the second rotating body 30 .
[0061] As a specific implementation method, Figure 1-2 As shown, the sensor assembly includes a power circuit board assembly 60 and a closing cover 70, the power circuit board assembly 60 includes a circuit board 61, an infrared transmitter (not shown in the figure), an infrared receiver (not shown in the figure), a battery 62 and a communication module (not shown in the figure); the closing cover 70 includes a closing cover frame 71 and an optical lens 72, and the optical lens 72 is arranged on the closing cover frame 71; the power circuit board assembly 60 is arranged inside the second inner cavity 39, and the closing cover 70 covers the second end opening of the second rotating body 30.
[0062] Further, combined with Figure 7 As shown, the closing cover 70 also includes a limiting pressure plate 73, the outer wall of the limiting pressure plate 73 is fixed to the inner wall of the closing cover frame 71, the outer peripheral wall of the limiting pressure plate 73 is provided with a closing cover connecting buckle 733, the inner wall of the closing cover frame 71 is provided with a closing cover connecting position 713, and the limiting pressure plate 73 is connected to the closing cover connecting buckle 733.
[0063] Furthermore, the edge of the limiting pressure plate 73 is provided with a plurality of pressure plate connection buckles 730, the inner cavity wall of the second rotating body 30 is provided with a plurality of pressure plate connection positions (not shown in the figure), and the closing cover 70 is connected with the plurality of connection buckles 730 and the plurality of pressure plate connection positions 37 through the plurality of connection buckles 730. The connection between the closing cover 70 and the second rotating body 30 is achieved through the limiting pressure plate 73.
[0064] Furthermore, the limiting pressure plate 73 further includes a plurality of limiting pressure posts 732 extending toward the power circuit board assembly 60, for limiting the power circuit board assembly 60. The plurality of limiting pressure posts 732 include at least one conductive connector 7320; one end of the conductive connector 7320 abuts against the circuit board 61 to connect to the circuit path of the communication module, and the other end is connected to the antenna conductive line.
[0065] In this embodiment, the closing cover and the power circuit board assembly 60 are connected separately. Of course, they can also be installed as one piece and then installed in the inner cavity 39 of the second rotating body 30 .
[0066] Based on the above rotating mechanism, the utility model also provides a specific embodiment of an electronic device, including an electronic component and the above rotating mechanism; the second rotating body 30 is provided with a mounting structure for mounting the electronic component. The electronic component can be a detection light, an antenna device, a laser sensor, and various electronic devices that need to achieve angle adjustment in practical applications.
[0067] It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate directions or positional relationships based on directions or positional relationships shown in the drawings, or directions or positional relationships that are usually placed when in use, and are only for the convenience of description, rather than indicating that the device or element referred to must have a specific direction, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish descriptions, and cannot be understood as indicating relative importance.
[0068] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.
Claims
1. A rotating mechanism, characterized in that: include: A first rotating body (20) and a second rotating body (30); The first end of the first rotating body (20) is provided with a first contact surface (21) which is arranged obliquely, and the first end of the second rotating body (30) is provided with a second contact surface (31); The first rotating body (20) and the second rotating body (30) are rotatably tightly connected via a first rotating shaft (40), and the first contact surface (21) and the second contact surface (31) are in close contact with each other; Wherein, the first contact surface (21) and the second contact surface (31) are arranged perpendicularly relative to the axis of the first rotating shaft (40), and the second rotating body (30).
2. The rotating mechanism according to claim 1, characterized in that: The second contact surface (31) is also an inclined surface arranged at an angle, and the inclination angle of the second contact surface (31) is the same as the inclination angle of the first contact surface (21).
3. The rotating mechanism according to claim 2, characterized in that: A second shaft connection hole (32) recessed into the second rotating body (30) is provided at the center of the second contact surface (31), and the second end of the first rotating shaft (40) is fixed in the second shaft connection hole (32); A first shaft connection hole (22) recessed into the first rotating body (20) is provided at the center of the first contact surface (21), and the first end of the first rotating shaft (40) is rotatably disposed in the first shaft connection hole (22).
4. The rotating mechanism according to claim 3, characterized in that: The first end of the first rotating shaft (40) is also provided with a first limiting structure for limiting the axial position of the first rotating shaft (40), and the first rotating body (20) is provided with a second limiting structure cooperating with the first limiting structure.
5. The rotating mechanism according to claim 4, characterized in that: The first limiting structure is a ball head (41) extending axially from the first end of the first rotating shaft (40) into the first rotating body (20); the first rotating body (20) is provided with a first inner cavity (29) connected to the first shaft connecting hole (22); the second limiting structure is a ball head limiting seat (24) arranged in the first inner cavity (29); the ball head limiting seat (24) is provided with a plurality of ball head buckles (241) arranged in an annular manner corresponding to the shape of the ball head (41); the ball head (41) is clamped in the ball head buckle (241) and can rotate freely.
6. The rotating mechanism according to claim 3, characterized in that: The second contact surface (31) is provided with a second circular sunken groove (33) coaxial with the second shaft connecting hole (32); the first rotating shaft (40) is provided with a radially extending annular boss (43) at a position corresponding to the second circular sunken groove (33); and the annular boss (43) is arranged in the second circular sunken groove (33).
7. The rotating mechanism according to claim 6, characterized in that: The first contact surface (21) is provided with a first circular sunken groove (23) coaxial with the first shaft connecting hole (22), and the annular boss (43) is partially arranged in the first circular sunken groove (23).
8. The rotating mechanism according to claim 1, characterized in that: The second end of the first rotating body (20) is also provided with a base (10), the second end of the first rotating body (20) is rotatably connected to the base (10), the axis of the first rotating body (20) is perpendicular to the bottom plane of the base (10), and the first contact surface (21) and the second contact surface (31) are inclined relative to the bottom plane of the base (10).
9. The rotating mechanism according to claim 8, characterized in that: The surface of the base (10) is provided with a protruding second rotating shaft (50), the second rotating shaft (50) is provided with an annular limiting groove (51), the second rotating shaft (50) and the first rotating shaft (40) are arranged to be inclined relative to the second rotating shaft (50), and the second rotating shaft (50) and the annular limiting groove (51) are rotatably connected.
10. The rotating mechanism according to claim 9, characterized in that: The second end of the first rotating body (20) is provided with at least one pair of relatively arranged limiting buckles (27), the limiting buckles (27) being inserted into the limiting grooves (51), and the limiting buckles (27) being able to slide in the limiting grooves (51).
11. The rotating mechanism according to claim 2, characterized in that: The first rotating body (20) is an elliptical cylinder, the second rotating body (30) is also an elliptical cylinder, the first contact surface (21) is a perfect circular surface formed by the outer peripheral wall of the first rotating body (20), the second contact surface (31) is a perfect circular surface formed by the outer peripheral wall of the second rotating body (30), and the first contact surface (21) and the second contact surface (31) are of the same size.
12. An infrared sensor, characterized in that: It comprises a sensor component and a rotating mechanism as claimed in any one of claims 1 to 11; the second rotating body (30) of the rotating mechanism is provided with the sensor component.
13. The infrared sensor according to claim 12, characterized in that: The second rotating body (30) is provided with a second inner cavity (39) formed by an opening at the second end thereof and extending toward the first end, and the sensor component is arranged in the second inner cavity (39).
14. The infrared sensor according to claim 13, characterized in that: The sensor assembly comprises a power circuit board assembly (60) and a closing cover (70), wherein the power circuit board assembly (60) comprises a circuit board (61), an infrared transmitter, an infrared receiver, a battery and a communication module; the closing cover (70) comprises a closing cover frame (71) and an optical lens (72), wherein the optical lens (72) is arranged on the closing cover frame (71); the power circuit board assembly (60) is arranged inside the second inner cavity (39), and the closing cover (70) covers the second end opening of the second rotating body (30).
15. The infrared sensor according to claim 14, characterized in that: The closing cover (70) further comprises a limiting pressure plate (73), the outer wall of which is fixed to the inner wall of the closing cover frame (71), the edge of which is provided with a plurality of pressure plate connecting buckles (730), the inner cavity wall of the second rotating body (30) is provided with a plurality of pressure plate connecting clamping positions, and the closing cover (70) is clamped with the plurality of pressure plate connecting buckles (730) and the plurality of pressure plate connecting clamping positions via the plurality of pressure plate connecting buckles (730).
16. The infrared sensor according to claim 15, characterized in that: The limiting pressure plate (73) further comprises a plurality of limiting pressure posts (732) extending in the direction of the power circuit board assembly (60), wherein the plurality of limiting pressure posts (732) comprises at least one conductive connector (7320); one end of the conductive connector (7320) abuts against the circuit board (61) to be connected to the circuit path of the communication module, and the other end is connected to the antenna conductive line.
17. An electronic device, characterized in that: comprising an electronic component and a rotating mechanism as claimed in any one of claims 1 to 11; The second rotating body (30) of the rotating mechanism is provided with a mounting structure for mounting the electronic component.