Holder locking mechanism, holder and image acquisition device

Abstract

The utility model belongs to the technical field of pan-tilt equipment, and particularly relates to a pan-tilt locking mechanism, a pan-tilt and an image acquisition device. The utility model provides a pan-tilt locking mechanism, which comprises a brake component, which synchronously rotates with a rotating component of a pan-tilt motor and / or a load of the pan-tilt motor; the electromagnet is fixed relative to the fixing component of the holder motor; under the action of the magnetic force of the electromagnet, at least one part of the brake component generates deformation which is close to the direction of the electromagnet and enables the pan-tilt motor to be locked; and when the magnetic force of the electromagnet disappears, at least one part of the brake part recovers deformation so as to unlock the pan-tilt motor. The pan-tilt locking mechanism, the pan-tilt and the image acquisition device are simple in structure, high in locking speed and small in impact.

Description

Technical Field

[0001] The utility model relates to the technical field of pan / tilt equipment, in particular to a pan / tilt locking mechanism, a pan / tilt and an image acquisition device. Background Art

[0002] After the gimbal is aimed at the target and in place, it needs to lock the target. Currently, one way to achieve gimbal locking is to put the gimbal motor in an angle closed-loop control operation state, and dynamically lock the target through negative feedback of the angle error. In this way, the motor is still in a forward and reverse motion state at the microscopic level in the locked state, which will cause the optical resolution of the payload telephoto camera to be significantly reduced. Another way is to make the gimbal absolutely stationary relative to the mounting base through a locking mechanism, so as not to reduce the optical resolution of the camera payload. For example, in the patent with patent number CN213512917U, when the electromagnetic drive element is powered on, the friction element is attracted to move in a direction away from the rotating part of the gimbal motor to allow the gimbal to rotate. When the electromagnetic drive element is powered off, the elastic element restores the deformation and drives the friction element to move to a position that presses down the rotating part of the gimbal motor to lock the gimbal. Although the gimbal power-off locking mechanism in this patent can achieve the locking of the gimbal, the friction element needs to move as a whole during the locking and unlocking process, so the impact generated is large, which is easy to cause the angle error of the gimbal electrode positioning. In addition, the accuracy of the overall movement of the friction element is difficult to ensure, so the reliability of the gimbal locking is poor. In order to ensure the accuracy of the overall movement of the friction element, this patent provides a guide rod to guide the sliding of the friction element, which makes the structure of the locking mechanism complicated and more costly. Utility Model Content

[0003] In view of this, the embodiments of the present invention provide a pan-tilt locking mechanism, a pan-tilt and an image acquisition device, which are used to solve the technical problems that the existing pan-tilt locking method has a complex structure and a large impact when the pan-tilt is locked.

[0004] The technical solution adopted by the utility model is:

[0005] In a first aspect, the utility model provides a pan / tilt locking mechanism, comprising:

[0006] A brake member that rotates synchronously with a rotating part of the pan / tilt motor and / or a load of the pan / tilt motor;

[0007] The electromagnet is fixed relatively to the fixed part of the pan / tilt motor;

[0008] Under the action of the magnetic force of the electromagnet, at least a part of the brake member is deformed toward the electromagnet and locks the pan / tilt motor.

[0009] When the magnetic force of the electromagnet disappears, at least a portion of the brake member recovers its deformation to unlock the pan / tilt motor.

[0010] Preferably, the braking member is in the shape of a sheet.

[0011] Preferably, the brake member is perpendicular to the rotating shaft of the pan / tilt motor.

[0012] Preferably, the magnetic poles of the electromagnet are perpendicular to the rotating shaft of the pan / tilt motor.

[0013] Preferably, one end of the electromagnet close to the magnetic pole of the brake member is a plane, and the plane is parallel to a surface of the brake member facing the electromagnet.

[0014] Preferably, the brake member is circular

[0015] Preferably, the electromagnet is an electromagnet that generates magnetic force when the power is off.

[0016] Preferably, the electromagnet is an electromagnet that generates magnetic force when powered on.

[0017] Preferably, the braking member includes a connecting part and a braking part, the connecting part is connected to the rotating part of the gimbal motor and / or the load of the gimbal motor, the braking part is formed by extending the connecting part toward the periphery, and under the magnetic action of the electromagnet, at least a part of the braking part contacts the electromagnet.

[0018] In a second aspect, the present invention provides a pan / tilt head, comprising a pan / tilt head motor and the pan / tilt head locking mechanism described in the first aspect.

[0019] In a third aspect, the present invention provides an image acquisition device, comprising the pan / tilt head and camera described in the second aspect.

[0020] Beneficial effects: The pan-tilt locking mechanism, pan-tilt and image acquisition device of the utility model cause the brake part to produce a slight deformation through the magnetic force of the electromagnet, so that after the brake part contacts the electromagnet, a static friction force that can hinder the relative rotation between the brake part and the electromagnet is generated, so that the rotating part of the pan-tilt motor that rotates synchronously with the brake part and the fixed part of the pan-tilt motor that is fixed to a limited position with the electromagnet cannot rotate relative to each other, thereby achieving the locking of the pan-tilt. Since the utility model only requires the brake part to produce a slight deformation and contact the electromagnet when the pan-tilt is locked, and does not require the brake part to move as a whole, the pan-tilt locking process not only has a short stroke and a short execution time, but also has a small impact, and the motor positioning angle error caused by braking is also very small. And since the brake part only needs to be slightly deformed and does not need to move as a whole, there is no need to set up an additional guide mechanism to guide the movement of the brake part, so the structure is simple, the volume is small, it is easy to install, the cost is low, and the execution action is simple and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the drawings required for use in the embodiment of the utility model will be briefly introduced below. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work, and these are all within the protection scope of the utility model.

[0022] Figure 1 It is a structural schematic diagram of the pan / tilt locking mechanism of the utility model;

[0023] Figure 2 It is a structural schematic diagram of the brake component of the pan / tilt locking mechanism in the utility model;

[0024] Figure 3 A schematic diagram of the three-dimensional structure of one viewing angle of the pan / tilt platform of the utility model;

[0025] Figure 4 The three-dimensional structure schematic diagram of the pan / tilt platform of the utility model from another viewing angle.

[0026] Parts and their numbers in the figure:

[0027] Braking member 1, connecting part 11, braking part 12, electromagnet 2, pan / tilt motor 3, fixing part 31, rotating part 32, first fixing part 311, first rotating part 321, second fixing part 312, second rotating part 322, first braking member 111, first electromagnet 211, second braking member 112, second electromagnet 212, bottom plate 4, height adjusting member 5, first fixing member 6, second fixing member 7, reflector 8, mirror frame 9. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. It should be noted that, in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. In the description of the utility model, it should be understood that the orientation or position relationship indicated by the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the utility model. Moreover, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "includes..." do not exclude the presence of other identical elements in the process, method, article or device including the elements. If there is no conflict, the embodiments of the utility model and the various features in the embodiments can be combined with each other, all within the scope of protection of the utility model.

[0029] Example 1

[0030] like Figure 1 As shown, the utility model provides a pan-tilt locking mechanism, which is used to lock the pan-tilt motor 3 so that its output end cannot rotate. The pan-tilt motor 3 includes a fixed component 31 and a rotating component 32. The rotating component 32 of the pan-tilt motor 3 rotates relative to the fixed component 31 to drive the load to rotate relative to the fixed component 31 together with the rotating component 32. The pan-tilt locking mechanism in this embodiment includes a brake 1 and an electromagnet 2.

[0031] The brake member 1 rotates synchronously with the rotating component 32 of the pan / tilt motor 3 and / or the load of the pan / tilt motor 3 .

[0032] The brake member 1 can be directly or indirectly connected to the rotating member 32 of the pan-tilt motor 3 and / or the load of the pan-tilt motor 3 to achieve synchronous rotation with the rotating member 32 of the pan-tilt motor 3 and / or the load of the pan-tilt motor 3. Since the load of the pan-tilt motor 3 rotates synchronously driven by the rotating member 32 of the pan-tilt motor 3, when the brake member 1 rotates synchronously with the load of the pan-tilt motor 3, the brake member 1 and the rotating member 32 of the pan-tilt motor 3 also rotate synchronously. Similarly, when the brake member 1 rotates synchronously with the load of the pan-tilt motor 3, the brake member 1 and the rotating member 32 of the pan-tilt motor 3 also rotate synchronously.

[0033] The load of the aforementioned pan-tilt motor 3 is directly or indirectly connected to the output end of the pan-tilt motor 3 , and rotates together with the output end of the pan-tilt motor 3 under the drive of the pan-tilt motor 3 .

[0034] The electromagnet 2 is relatively fixed to the fixing part 31 of the pan / tilt motor 3 , that is, the position of the electromagnet 2 and the fixing part 31 of the pan / tilt motor 3 remains unchanged.

[0035] Under the magnetic force of the electromagnet 2, at least a portion of the brake member 1 is deformed toward the electromagnet 2 and locks the pan / tilt motor.

[0036] The electromagnet 2 in this embodiment has two states, one is a state with magnetic force, and the other is a state without magnetic force, and the above two states can be controlled by powering on and off the electromagnet 2. When the electromagnet 2 has magnetic force, it will generate magnetic attraction force on the brake member 1, and the magnetic attraction force causes the brake member 1 to produce a slight deformation toward the electromagnet 2.

[0037] After the deformation, at least a portion of the brake member 1 reaches a position where the brake member 1 and the electromagnet 2 are relatively stationary.

[0038] The aforementioned position where the brake member 1 and the electromagnet are relatively stationary can be a position where, after deformation, at least a portion of the brake member 1 maintains reliable contact with the electromagnet 2. At this time, the brake member 1 and the electromagnet 2 remain in a relatively stationary state due to static friction, that is, the brake member 1 will not rotate relative to the electromagnet 2.

[0039] The aforementioned position where the brake member 1 and the electromagnet 2 are relatively stationary can also be a position where the deformation of the brake member 1 increases under the action of the magnetic force to the point where the brake member 1 and the electromagnet 2, which originally had sliding friction, are gradually braked and finally become static friction after complete braking.

[0040] The aforementioned position where the brake member 1 and the electromagnet 2 are relatively stationary may also be a situation where, after the brake member is deformed, although it is not in contact with the electromagnet 2, the point where the brake member 1 has the largest deformation displacement is locked at the position where the magnetic field is the strongest.

[0041] Since the brake member 1 rotates synchronously with the rotating part 32 of the pan / tilt motor 3 and / or the load of the pan / tilt motor 3, and the electromagnet 2 and the fixed part 31 of the pan / tilt motor 3 remain fixed and non-rotating, after the brake member 1 is slightly deformed and remains relatively still with the electromagnet 2, the relative rotation between the rotating part and the fixed part of the pan / tilt motor 3 is locked. In order to allow the brake member 1 to deform under the action of magnetic force, the brake member 1 can be made of magnetic material. As one example, the brake member 1 can be made of soft magnetic material, such as silicon steel, so that the brake member 1 has good elasticity, is easy to deform under the action of magnetic force, and can quickly recover the deformation after the magnetic force disappears.

[0042] When the magnetic force of the electromagnet 2 disappears, at least a portion of the brake member 1 recovers its deformation to unlock the pan / tilt motor.

[0043] This embodiment controls the power on or off of the electromagnet 2 to make the magnet in a state where the magnetic force is eliminated. In this state, the brake member 1 is no longer affected by the magnetic attraction of the electromagnet 2, so the brake member 1 can recover its deformation and recover to a state where it can rotate relative to the electromagnet 2. In this way, when the magnetic force disappears, the brake member 1 is no longer affected by the magnetic force, so it recovers to its original shape and breaks contact with the electromagnet 2. At this time, the rotating part of the pan-tilt motor 3 can rotate freely relative to the fixed part of the pan-tilt motor 3, and the pan-tilt motor 3 is in an unlocked state.

[0044] The pan-tilt locking mechanism of this embodiment causes the brake member 1 to produce a slight deformation through the magnetic force of the electromagnet 2, so that at least a part of the brake member 1 reaches a position where the brake pad 1 contacts the electromagnet 2 and can prevent the brake member 1 and the electromagnet 2 from being relatively still, so that the rotating part 32 of the pan-tilt motor 3 that rotates synchronously with the brake member 1 and the fixed part 31 of the pan-tilt motor 3 that is fixed relative to the electromagnet 2 cannot rotate relative to each other, thereby achieving the locking of the pan-tilt. Since the present embodiment only requires the brake member 1 to produce a slight deformation to reach a relatively still position with the electromagnet 2 when the pan-tilt is locked, and does not require the brake member 1 to move as a whole, the pan-tilt locking process not only has a short stroke and a short execution time, but also has a small impact, and the motor positioning angle error caused by braking is also very small. And since the brake member 1 only needs to be slightly deformed and does not need to move as a whole, there is no need to set up an additional guide mechanism to guide the movement of the brake member 1, so the structure is simple, the volume is small, it is easy to install, the cost is low, and the execution action is simple and reliable.

[0045] like Figure 2 As shown, in this embodiment, the brake member 1 is in the shape of a sheet. The brake member 1 of the aforementioned shape can be fully deformed under the action of magnetic force and increase its contact area with the electromagnet 2, thereby increasing the static friction force so that the pan / tilt motor 3 can be reliably locked.

[0046] In this embodiment, the brake member 1 is perpendicular to the rotating shaft of the pan-tilt motor 3, that is, the surface of the brake member 1 facing the electromagnet 2 is perpendicular to the rotating shaft of the pan-tilt motor 3 it locks. This can increase the resistance distance generated after the brake member 1 is deformed and contacts the electromagnet 2, thereby further improving the reliability of locking the pan-tilt motor 3.

[0047] In this embodiment, the magnetic pole of the electromagnet 2 is parallel to the rotating shaft of the pan / tilt motor 3. The above structure can make the brake member 1 deform quickly and generate a larger static friction force after contacting the electromagnet 2, which can effectively avoid relative rotation between the brake member 1 and the electromagnet 2.

[0048] In this embodiment, the end of the electromagnet 2 close to the magnetic pole of the brake member 1 is a plane, and the plane is parallel to the side of the brake member 1 facing the electromagnet 2. The above structure can effectively increase the contact area between the brake member 1 and the electromagnet 2, so that the static friction between the brake member 1 and the electromagnet 2 is further improved, so that the pan / tilt motor 3 can be reliably locked.

[0049] As an example, the electromagnet 2 described in this embodiment is an electromagnet 2 that generates magnetic force when powered on, that is, a powered magnetized electromagnet 2. With the aforementioned type of electromagnet 2, when the pan / tilt motor 3 needs to be locked, power is supplied to the electromagnet 2, and then the electromagnet 2 generates magnetic force to deform the brake member 1 and contact the electromagnet 2, thereby locking the pan / tilt motor 3 through the static friction force generated by the contact between the brake member 1 and the electromagnet 2.

[0050] When the pan / tilt motor 3 needs to rotate, the electromagnet 2 can be controlled to be powered off. After the electromagnet 2 is powered off, the magnetism disappears, the brake member 1 recovers its deformation, and can rotate relative to the electromagnet 2. At this time, the pan / tilt motor 3 can rotate.

[0051] As an example, in this embodiment, the electromagnet 2 is an electromagnet 2 that generates magnetic force when the power is off, that is, a power-off magnetization type electromagnet 2. When the aforementioned type of electromagnet 2 is used, when the pan-tilt motor 3 needs to be locked, the electromagnet 2 is controlled to be in a power-off state. At this time, the electromagnet 2 will generate magnetic force to deform the brake member 1 and make it relatively still with the electromagnet 2, so that the pan-tilt motor 3 is locked by the static friction force generated after the brake member 1 and the electromagnet 2 contact. After the pan-tilt motor 3 is locked, the power supply to the pan-tilt motor 3 can be stopped. After the aforementioned method is adopted, since the pan-tilt motor 3 does not need to supply power to the electromagnet 2 in the locked state, the pan-tilt motor 3 can also stop power output, so the overall power consumption of the pan-tilt is extremely low, which can significantly improve the energy-saving effect of the pan-tilt, and will not generate heat accumulation, which can further improve the service life of the equipment.

[0052] When the pan / tilt motor 3 needs to rotate, the electromagnet 2 can be energized. After the electromagnet 2 is energized, the magnetism disappears, the brake member 1 recovers its deformation, and can rotate relative to the electromagnet 2. At this time, the pan / tilt motor 3 can rotate.

[0053] In this embodiment, the brake member 1 includes a connecting portion 11 and a braking portion 12. The connecting portion 11 is connected to the rotating component 32 of the pan-tilt motor 3 and / or the load of the pan-tilt motor 3. The braking portion 12 is formed by extending the connecting portion 11 toward the periphery. Under the magnetic action of the electromagnet 2, at least a portion of the braking portion 12 is in contact with the electromagnet 2.

[0054] In a specific implementation, the connecting part 11 can be connected to the rotating part 32 of the pan-tilt motor 3 and / or the load of the pan-tilt motor 3 through a connecting piece, so that the brake part 1 can rotate synchronously with the rotating part 32 of the pan-tilt motor 3 and / or the load of the pan-tilt motor 3.

[0055] The connecting portion 11 is located near the rotation center, while the braking portion 12 is located farther from the rotation center than the connecting portion 11, that is, located on the periphery of the connecting portion 11. Such a setting can, on the one hand, make the connection between the braking component 1 and the rotating component 32 of the pan-tilt motor 3 and / or the load of the pan-tilt motor 3 more stable, and on the other hand, the braking portion 12 can reliably contact the electromagnet 2 after the braking component 1 is deformed, and rely on static friction to generate a sufficiently large resistance distance, so that the pan-tilt motor 3 can be reliably locked.

[0056] As one example, the brake pad 1 may be configured as a circle as a whole.

[0057] As one example, the connection portion 11 of the brake member 1 is circular, and the brake portion 12 of the brake member 1 is a sector-shaped portion concentric with the connection portion 11. With the aforementioned structure, the circumferential angle of the brake portion 12 is smaller than the circumferential angle of the connection portion 11, so that the brake portion 12 can be more easily deformed toward the electromagnet 2 and fit well with the electromagnet 2, thereby providing static friction between the brake member 1 and the electromagnet 2 when the pan / tilt motor 3 is locked.

[0058] In order to facilitate the control of the locked state and unlocked state of the pan / tilt motor 3 , a control circuit may be provided, and the control circuit is used to control the power-on and power-off states of the electromagnet 2 .

[0059] Example 2

[0060] like Figure 3 and Figure 4 As shown, this embodiment provides a gimbal, which includes a gimbal motor and the gimbal locking mechanism described in Example 1.

[0061] The gimbal in this embodiment can be a single-axis gimbal or a multi-axis gimbal. When a multi-axis gimbal is used, the gimbal has multiple gimbal motors, and the gimbal locking mechanism can be set corresponding to the gimbal motor. The brake part of the gimbal locking mechanism rotates synchronously with the rotating part and / or load of the corresponding gimbal motor, and the electromagnet of the gimbal locking mechanism keeps the position relatively fixed with the fixed part of the corresponding gimbal motor. In order to keep the electromagnet of the gimbal locking mechanism relatively fixed with the fixed part of the gimbal motor, the electromagnet and the fixed part can be installed on the same part or on different parts whose positions are relatively fixed.

[0062] For example, Figure 3 and Figure 4 The gimbal includes a first gimbal motor and a corresponding first gimbal locking mechanism. For the sake of convenience of description, in this article, the fixed part of the first gimbal motor is referred to as the first fixed part 311, the rotating part of the first gimbal motor is referred to as the first rotating part 321, the brake part of the first gimbal locking mechanism is referred to as the first brake part 111, and the electromagnet of the first gimbal locking mechanism is referred to as the first electromagnet 211.

[0063] The first fixing member 311 is mounted on the bottom plate 4, the first electromagnet 211 is mounted on the bottom plate 4, or the first electromagnet 211 is mounted on the bottom plate 4 via a height adjusting member 5. The height adjusting member 5 is used to adjust the spacing between the end face of the first electromagnet 211 and the brake member 1, so that the brake member 1 can reliably contact the first electromagnet 211 after deformation. In specific implementation, the height of the height adjusting member 5 can be determined according to the spacing between the end face of the first electromagnet 211 and the first brake member 1, and the height adjusting member 5 is mounted on the bottom plate 4, and then the first electromagnet 211 is mounted on the height adjusting member 5. The first brake member 111 is connected to the first rotating member 321.

[0064] When the first brake member 111 is deformed under the magnetic force of the first electromagnet 211 and contacts the first electromagnet 211, the first gimbal motor is locked. When the magnetic force of the first electromagnet 211 disappears, the first brake member 111 recovers its deformation and separates from the first electromagnet 211. At this time, the first gimbal motor is in an unlocked state.

[0065] The gimbal in this embodiment also includes a second gimbal motor and a corresponding second gimbal locking mechanism. For the sake of ease of description, in this document, the fixed part of the second gimbal motor is referred to as the second fixed part 312, the rotating part of the second gimbal motor is referred to as the second rotating part 322, the braking part of the second gimbal locking mechanism is referred to as the second braking part 112, and the electromagnet of the second gimbal locking mechanism is referred to as the second electromagnet 212.

[0066] The first fixing member 6 is connected to the first rotating member 321 and can rotate together with the first rotating member 321. The second fixing member 7 is connected to the first fixing member 6, and the second electromagnet 212 is installed on the second fixing member 7. The second fixing member 312 of the second pan / tilt motor is connected to the second fixing member 7, the load of the second pan / tilt motor is connected to the second rotating member 322, and the second brake member 112 is connected to the load of the second motor and / or the second rotating member 322.

[0067] When the second brake member 112 is deformed under the magnetic force of the second electromagnet 212 and contacts the second electromagnet 212, the second gimbal motor is locked. When the magnetic force of the second electromagnet 212 disappears, the second brake member 112 recovers its deformation and separates from the second electromagnet 212. At this time, the second gimbal motor is in an unlocked state.

[0068] Example 3

[0069] This embodiment provides an image acquisition device, which includes the pan / tilt head and camera described in Embodiment 2.

[0070] As an example, a camera can be installed on the gimbal as a load of the gimbal, and the angle of the camera can be adjusted by rotating the gimbal motor so that the camera is aimed at the target to be captured. When the camera is aimed at the target whose image is to be captured, the gimbal locking mechanism locks the gimbal and the camera is in a stationary state, so that a high-resolution image of the target can be captured.

[0071] As an example, the reflector 8 can be installed on the pan-tilt head as a load, and the angle of the reflector 8 can be adjusted by rotating the pan-tilt head motor, so that the light emitted by the target to be collected is reflected to the camera through the reflector 8. In order to facilitate the installation of the reflector 8, a frame 9 can be made first, the reflector 8 can be installed on the frame 9, and then the reflector 8 can be installed on the pan-tilt head through the frame 9. When the reflector 8 is in a state where the light of the target to be collected can be reflected to the camera, the pan-tilt head locking mechanism locks the pan-tilt head motor, and the reflector 8 is in a stationary state, and then a high-resolution image of the target can be collected. Since the reflector 8 has a smaller mass as a load of the pan-tilt head motor, the pan-tilt head locking mechanism in this embodiment can lock the pan-tilt head more accurately and reliably, thereby further improving the quality of image acquisition.

[0072] The above is only a specific implementation of the present invention. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. It should be understood that the protection scope of the present invention is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention.

Claims

1. The pan / tilt locking mechanism is characterized by: include: A brake member that rotates synchronously with a rotating part of the pan / tilt motor and / or a load of the pan / tilt motor; The electromagnet is fixed relatively to the fixed part of the pan / tilt motor; Under the action of the magnetic force of the electromagnet, at least a part of the brake member is deformed to approach the electromagnet and lock the pan / tilt motor; When the magnetic force of the electromagnet disappears, at least a portion of the brake member recovers its deformation to unlock the pan / tilt motor.

2. The pan / tilt locking mechanism according to claim 1, characterized in that: The brake member is in sheet shape.

3. The pan / tilt locking mechanism according to claim 1, characterized in that: The brake component is perpendicular to the rotating shaft of the pan / tilt motor, and the magnetic pole of the electromagnet is parallel to the rotating shaft of the pan / tilt motor.

4. The pan / tilt locking mechanism according to claim 1, characterized in that: The braking member is circular.

5. The pan / tilt locking mechanism according to claim 1, characterized in that: One end of the electromagnet close to the magnetic pole of the brake member is a plane, and the plane is parallel to a surface of the brake member facing the electromagnet.

6. The pan / tilt locking mechanism according to claim 1, characterized in that: The brake component includes a connecting part and a braking part. The connecting part is connected to the rotating part of the pan-tilt motor and / or the load of the pan-tilt motor. The braking part is formed by extending the connecting part toward the periphery. Under the magnetic action of the electromagnet, at least a part of the braking part contacts the electromagnet.

7. The pan / tilt locking mechanism according to any one of claims 1 to 6, characterized in that: The electromagnet is an electromagnet that generates magnetic force when power is off.

8. The pan / tilt locking mechanism according to any one of claims 1 to 6, characterized in that: The electromagnet is an electromagnet that generates magnetic force when powered on.

9. A pan / tilt head, characterized in that: It comprises a pan / tilt motor and a pan / tilt locking mechanism as claimed in any one of claims 1 to 7.

10. An image acquisition device, characterized in that: Includes the pan / tilt head and camera described in claim 9.

Images