CN219571466U - Tripod head component and camera - Google Patents

Abstract

The utility model relates to a holder assembly and a camera, wherein the holder assembly comprises a base, a rotating shaft and a driving assembly, wherein: the base comprises a base body and a sleeve integrally arranged on the base body, and one end of the sleeve, which is far away from the base body, is provided with a first opening; the rotating shaft is rotatably arranged in the sleeve and can drive the external element through the first opening; the driving component is arranged on the sleeve and used for driving the rotating shaft. The seat body and the sleeve are integrally arranged, and can be molded through casting and other processes, and then the rotating shaft and the driving assembly are arranged on the sleeve, so that the cradle head assembly is integrated, the production and assembly processes are simple and convenient, the assembly error can be reduced, and the precision of the cradle head assembly can be improved. In the working process of the cradle head assembly, the driving assembly drives the rotating shaft to rotate around the axis of the rotating shaft, and the rotating shaft can drive external elements such as a pitching assembly and the like of the camera to rotate in the horizontal direction through the first opening.

Description

Tripod head component and camera

Technical Field

The utility model relates to the technical field of monitoring equipment, in particular to a holder assembly and a camera.

Background

The existing cradle head mostly comprises a base, a shield and a horizontal driving assembly, wherein all parts in the horizontal driving assembly are respectively placed and hung on the shield or placed on the base, and can drive the pitching assembly to rotate in the horizontal direction.

However, the assembly process of this installation method is complicated, and assembly errors are easily generated, so that the precision of the pan-tilt assembly is low.

Disclosure of Invention

In view of the foregoing, it is desirable to provide a pan-tilt assembly and a camera that can reduce assembly errors and thereby improve accuracy.

The utility model provides a cradle head assembly, comprising: the base comprises a base body and a sleeve integrally arranged on the base body, and one end of the sleeve, which is far away from the base body, is provided with a first opening; a rotating shaft rotatably arranged in the sleeve and capable of driving the external element through the first opening; and the driving assembly is arranged in the sleeve and is used for driving the rotating shaft to rotate.

Among the above-mentioned cloud platform subassembly, pedestal and sleeve an organic whole set up, can be through the technology processing shaping such as casting, then all set up pivot and drive assembly in the sleeve for this cloud platform subassembly integrates, and, production and assembly process are simple and convenient, can also reduce assembly error, thereby can promote the precision of this cloud platform subassembly. In the working process of the cradle head assembly, the driving assembly drives the rotating shaft to rotate around the axis of the rotating shaft, and the rotating shaft can drive external elements such as a pitching assembly and the like of the camera to rotate in the horizontal direction through the first opening.

In one embodiment, a second opening is provided at an end of the sleeve facing away from the first opening, and the pan-tilt assembly further includes a cover plate detachably covering the second opening.

So set up, the user can be through first opening or second opening with components such as pivot, drive assembly in the sleeve, with apron lid and second opening after the assembly is accomplished to the inside component of protection sleeve.

In one embodiment, the pan-tilt assembly further includes a first seal disposed between the cover plate and the base.

So set up, the leakproofness between apron and the pedestal can be guaranteed to first sealing member, avoids external steam or dust to get into in the sleeve through the clearance between apron and the pedestal, and influences the normal work of components such as pivot, the drive assembly in the sleeve.

In one embodiment, a first mounting position is provided on an inner wall of the sleeve, and the holder assembly further includes a bearing assembly disposed at the first mounting position, and the bearing assembly rotatably supports the rotating shaft.

So set up, first installation position makes when installing bearing assembly to the sleeve need not to counterpoint repeatedly to can be convenient for assemble bearing assembly, and can also further improve assembly precision, reduce assembly error.

In one embodiment, the inner circumferential wall of the sleeve is provided with a first step, the outer circumferential wall of the rotating shaft is provided with a second step, and the cradle head assembly further comprises a limiting piece arranged on the sleeve; the first step and the limiting piece are arranged to form the first installation position in a surrounding mode, the outer ring of the bearing assembly is limited, and the second step is used for limiting the inner ring of the bearing assembly.

So set up, first step, locating part and second step mutually support, can carry out spacingly to the axial of bearing assembly and pivot, promote the stability of bearing assembly and pivot, avoid bearing assembly or pivot to take place the skew and influence the adjustment precision of camera along the axial in-process.

In one embodiment, a second mounting position is provided on the inner wall of the sleeve, and the driving assembly is disposed at the second mounting position.

So set up, the second installation position makes when installing drive assembly to the sleeve need not counterpoint repeatedly to can be convenient for assemble drive assembly, and can also further improve assembly precision, reduce assembly error, thereby promote transmission precision.

In one embodiment, the driving assembly includes a fixing portion and a driving portion that are rotatably connected, the fixing portion is fixedly disposed at the second mounting position, and the driving portion is fixedly connected with the rotating shaft.

The fixing part is fixed relative to the sleeve and can drive the driving part to rotate relative to the sleeve, so that the driving part can drive the rotating shaft to rotate relative to the sleeve.

In one embodiment, the pan-tilt assembly further includes an encoder disposed on the rotating shaft.

So configured, the encoder is capable of controlling the angular displacement of the shaft.

In one embodiment, the pan-tilt assembly further includes a cover body, and the cover body is covered outside the sleeve and is sealed and fixed with the base body.

So configured, the cover is used to protect the components inside the sleeve, while also being able to be used to support other external components connected to the shaft.

The present utility model also provides a camera comprising: a pitch assembly; and the pitching assembly is connected with the rotating shaft through the first opening.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments or the conventional techniques of the present utility model, the drawings required for the descriptions of the embodiments or the conventional techniques will be briefly described below, and it is apparent that the drawings in the following descriptions are only some embodiments of the present utility model, and other drawings may be obtained according to the drawings without inventive effort for those skilled in the art.

FIG. 1 is a schematic view of an explosion structure of a pan-tilt assembly according to an embodiment of the present utility model;

FIG. 2 is a schematic cross-sectional view of a pan-tilt assembly according to the present utility model;

FIG. 3 is an enlarged schematic view of the structure shown in FIG. 2A according to the present utility model;

FIG. 4 is an enlarged schematic view of the structure shown in FIG. 2B according to the present utility model;

fig. 5 is a schematic perspective view of a base provided by the present utility model;

fig. 6 is a schematic structural diagram of a camera provided by the present utility model.

Reference numerals: 100. a cradle head assembly; 10. a base; 11. a base; 12. a sleeve; 121. a first opening; 122. a second opening; 123. a first mounting location; 124. a first step; 125. a second mounting location; 126. a third step; 127. a fifth step; 20. a rotating shaft; 21. a second step; 22. a fourth step; 30. a drive assembly; 31. a fixing part; 32. a driving section; 40. a cover plate; 41. a first seal; 50. a bearing assembly; 51. a first bearing; 52. a second bearing; 60. a limiting piece; 70. an encoder; 71. a main body portion; 72. a rotating part; 73. a fixing member; 74. a third bearing; 80. a cover body; 81. a second seal; 200. a pitch assembly.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When a component is considered to be "connected" to another component, it can be directly connected to the other component or intervening components may also be present. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and the like are used in the description of the present utility model for the purpose of illustration only and do not represent the only embodiment.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" on a second feature may be that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through intermedial media. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely under the second feature, or simply indicating that the first feature is less level than the second feature.

Unless defined otherwise, all technical and scientific terms used in the specification of the present utility model have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used in the description of the present utility model includes any and all combinations of one or more of the associated listed items.

The existing cradle head mostly comprises a base, a shield and a horizontal driving assembly, wherein all parts in the horizontal driving assembly are respectively placed and hung on the shield or placed on the base, and can drive the pitching assembly to rotate in the horizontal direction. However, the assembly process of this installation method is complicated, and assembly errors are easily generated, so that the precision of the pan-tilt assembly is low.

In order to solve the above problems, as shown in fig. 1 to 6, the present utility model firstly provides a pan/tilt head assembly capable of reducing assembly errors and thus improving accuracy.

As shown in fig. 1, 2 and 5, specifically, the pan-tilt assembly 100 includes a base 10, a rotating shaft 20 and a driving assembly 30, wherein: the base 10 comprises a base 11 and a sleeve 12 integrally arranged on the base 11, and one end of the sleeve 12 far away from the base 11 is provided with a first opening 121; the rotating shaft 20 is rotatably arranged in the sleeve 12 and can drive an external element through the first opening 121; the driving assembly 30 is disposed in the sleeve 12 and is used for driving the rotating shaft 20 to rotate.

As described above, in the conventional pan/tilt head, each component in the horizontal driving assembly is separately placed and suspended on the shroud or placed on the base, but the assembly process of this installation manner is relatively complicated, and assembly errors are easily generated, so that the precision of the pan/tilt head assembly is low. In the holder assembly 100 provided by the embodiment of the utility model, the base 11 and the sleeve 12 are integrally arranged, and can be formed by casting and other processes, and then the rotating shaft 20 and the driving assembly 30 are arranged in the sleeve 12, so that the holder assembly is integrated, the production and assembly processes are simple and convenient, and the assembly error can be reduced, thereby improving the precision of the holder assembly 100. During operation of the pan-tilt assembly 100, the driving assembly 30 drives the rotating shaft 20 to rotate around the axis of the rotating shaft 20, and the rotating shaft 20 can drive external elements such as a pitching assembly of the camera to rotate in the horizontal direction through the first opening 121.

As shown in fig. 1 to 2, in one embodiment, an end of the sleeve 12 facing away from the first opening 121 is provided with a second opening 122, and the pan-tilt assembly 100 further includes a cover 40, where the cover 40 detachably covers the second opening 122. The user can install the rotating shaft 20, the driving assembly 30 and other elements into the sleeve 12 through the first opening 121 or the second opening 122, and after the assembly is completed, the cover plate 40 is covered with the second opening 122 so as to protect the elements inside the sleeve 12. The cover 40 may be detachably fixed to the base 11 or the sleeve 12 by means of screws, buckles, or the like. The seat 11 is provided with an annular structure, and one side surface of the seat 11, which is away from the sleeve 12, can be connected with an external structure such as a wall, so as to ensure the stability of the camera. The sleeve 12 is provided with a groove, and the cover plate 40 is arranged in the groove to prevent the cover plate 40 from protruding out of the base 11 to influence the stability of the camera.

As shown in fig. 2, the pan-tilt assembly 100 further includes a first seal 41 disposed between the cover 40 and the base 10. The first sealing member 41 can ensure the tightness between the cover plate 40 and the base 10, so as to prevent external water vapor or dust from entering the sleeve 12 through the gap between the cover plate 40 and the base 10, and affecting the normal operation of the rotating shaft 20, the driving assembly 30 and other elements in the sleeve 12. Since the shaft 20 is connected to an external element such as a pitch assembly through the first opening 121, the external element can seal the first opening 121.

Of course, in other embodiments, the sleeve 12 may include only the first opening 121, and neither the end of the sleeve 12 away from the first opening 121 nor the connection between the sleeve 12 and the base 11 is provided with an opening, so that the user may install the rotating shaft 20, the driving assembly 30, etc. into the sleeve 12 through the first opening 121.

As shown in fig. 2 to 3, the inner wall of the sleeve 12 is provided with a first mounting position 123, and the pan-tilt assembly 100 further includes a bearing assembly 50 disposed at the first mounting position 123, where the bearing assembly 50 rotatably supports the rotating shaft 20. The first mounting location 123 can be formed by casting or other processes during the production of the base 10, and the bearing assembly 50 is mounted in the sleeve 12 without repeated alignment, so that the bearing assembly 50 can be conveniently assembled, the assembly accuracy can be further improved, and the assembly error can be reduced.

As shown in fig. 3, the inner circumferential wall of the sleeve 12 is provided with a first step 124, the outer circumferential wall of the rotating shaft 20 is provided with a second step 21, and the holder assembly 100 further includes a limiting member 60 disposed on the sleeve 12. The limiting member 60 is provided in an annular structure, and can be connected with the sleeve 12 by means of screws, adhesion, buckling, etc., and a step portion can be formed between the limiting member 60 and the inner wall of the sleeve 12. The first step 124 and the step portion between the stopper 60 and the inner wall of the sleeve 12 enclose a first mounting position 123, and limit the outer ring of the bearing assembly 50, and the second step 21 limits the inner ring of the bearing assembly 50. The first step 124, the limiting piece 60 and the second step 21 are matched with each other, so that the axial direction of the bearing assembly 50 and the rotating shaft 20 can be limited, the stability of the bearing assembly 50 and the rotating shaft 20 is improved, and the influence on the adjustment precision of the camera caused by axial deviation of the bearing assembly 50 or the rotating shaft 20 in the working process is avoided.

When the first step 124 is convexly disposed at the middle position of the sleeve 12 along the axial direction of the rotating shaft 20, the limiting member 60 may be disposed on the inner wall of the sleeve 12 near the first opening 121 or the second opening 122; when the limiting member 60 is disposed at the middle position of the sleeve 12 along the axial direction of the rotating shaft 20, the first step 124 may be protruding on the inner wall of the sleeve 12 near the first opening 121 or the second opening 122.

In the illustrated embodiment, the bearing assembly 50 includes a first bearing 51 and a second bearing 52 disposed at intervals along the axial direction of the rotating shaft 20, the first step 124 is protruding from the sleeve 12 at a middle position along the axial direction of the rotating shaft 20, and the limiting member 60 is disposed at the edge of the first opening 121 of the sleeve 12. During installation, the first bearing 51 is firstly installed into the sleeve 12 through the first opening 121, so that the outer ring of the first bearing 51 is abutted against the first step 124, then the rotating shaft 20 is inserted into the sleeve 12 through the first opening 121, so that the second step 21 on the outer peripheral wall of the rotating shaft 20 is abutted against the inner ring of the first bearing 51, and the first step 124 and the second step 21 are matched to limit the axial direction of the first bearing 51; the second bearing 52 is installed into the sleeve 12 through the first opening 121, so that the inner ring of the second bearing 52 is abutted against the second step 21, and the first bearing 51 and the second bearing 52 are matched to limit the axial direction of the rotating shaft 20; finally, the limiting piece 60 is arranged at the edge of the first opening 121 of the sleeve 12, so that the limiting piece 60 is abutted with the outer ring of the second bearing 52, and the limiting piece 60 and the second step 21 are matched to limit the axial direction of the second bearing 52.

Of course, in other embodiments, when the first step 124 is protruding from the middle position of the sleeve 12 along the axial direction of the rotating shaft 20 and the limiting member 60 is disposed on the side of the sleeve 12 near the second opening 122, the second bearing 52, the rotating shaft 20 and the first bearing 51 may be sequentially installed into the sleeve 12 through the second opening 122, and finally the limiting member 60 may be installed on the side of the sleeve 12 near the second opening 122. When the limiting member 60 is disposed at the middle position of the sleeve 12 along the axial direction of the rotating shaft 20, the first step 124 is protruded at one end of the sleeve 12 near the first opening 121, the second bearing 52, the rotating shaft 20 and the first bearing 51 can be sequentially installed into the sleeve 12 through the second opening 122, and finally the limiting member 60 is installed at the middle position of the sleeve 12 along the axial direction of the rotating shaft 20. When the limiting member 60 is disposed at the middle position of the sleeve 12 along the axial direction of the rotating shaft 20, the first step 124 is protruded at one end of the sleeve 12 near the second opening 122, the first bearing 51, the rotating shaft 20 and the second bearing 52 can be sequentially installed into the sleeve 12 through the first opening 121, and finally the limiting member 60 is installed at the middle position of the sleeve 12 along the axial direction of the rotating shaft 20.

As shown in fig. 2 and 4, the inner wall of the sleeve 12 is provided with a second mounting position 125, and the driving assembly 30 is disposed at the second mounting position 125. The second mounting position 125 can be formed by casting or other processes during the production of the base 10, and the driving assembly 30 is mounted in the sleeve 12 without repeated alignment, so that the driving assembly 30 can be conveniently assembled, the assembly accuracy can be further improved, the assembly error can be reduced, and the transmission accuracy can be improved. The second mounting location 125 may be disposed on a side of the first mounting location 123 near the first opening 121, or may be disposed on a side near the second opening 122.

As shown in fig. 4, the driving assembly 30 includes a fixing portion 31 and a driving portion 32 rotatably connected, the fixing portion 31 is fixedly disposed at the second mounting position 125, and the driving portion 32 is fixedly connected to the rotating shaft 20. The fixing portion 31 is fixed relative to the sleeve 12, and is capable of driving the driving portion 32 to rotate relative to the sleeve 12, so that the driving portion 32 is capable of driving the rotating shaft 20 to rotate relative to the sleeve 12. The driving assembly 30 may be a driving motor, or may be other structures capable of driving the rotation shaft 20 to rotate.

In the illustrated embodiment, the inner circumferential wall of the sleeve 12 is provided with a third step 126, the third step 126 and the inner wall of the sleeve 12 form a second mounting position 125, the outer circumferential wall of the rotating shaft 20 is provided with a fourth step 22, and the third step 126 and the fourth step 22 are used for fixing and supporting the fixing portion 31 and the driving portion 32. The fixing portion 31 may be fixed to the third step 126 by a screw, a buckle, or an adhesive, and the driving portion 32 may be fixed to the fourth step 22 by a screw, a buckle, or an adhesive, so as to improve stability and reliability of connection between the fixing portion 31 and the sleeve 12 and between the driving portion 32 and the rotating shaft 20. The third step 126 and the fourth step 22 can also be used to accommodate the driving portion 32 and the fixing portion 31 due to the larger volume of the fixing portion 31 of the driving portion 32, so as to avoid an excessive space between the rotating shaft 20 and the sleeve 12. Of course, in other embodiments, the fixing portion 31 may be directly fixed to the inner peripheral wall of the sleeve 12, and the driving portion 32 may be directly fixed to the outer peripheral wall of the shaft 20. Alternatively, the driving assembly 30 may be disposed at an end of the rotating shaft 20 away from the first opening 121, where the driving assembly 30 includes a motor and an output shaft, and the rotating shaft 20 is connected to the output shaft, so long as the driving assembly can drive the rotating shaft 20 to rotate around its own axis, and no specific limitation is imposed herein.

As shown in fig. 2 and 4, the pan-tilt assembly 100 further includes an encoder 70 disposed on the rotating shaft 20. The encoder 70 is a rotary transducer capable of converting rotational displacement into a series of digital pulse signals that can be used to control the angular displacement of the shaft 20. Specifically, the encoder 70 includes a main body 71 and a rotating portion 72 rotatably connected, and the main body 71 is fixedly connected to the sleeve 12 by a fixing member 73. The inner peripheral wall of the sleeve 12 is provided with a fifth step 127, and the fixing member 73 can be fixed with the fifth step 127 by means of screws, glue or buckles, etc. to ensure the stability and reliability of the connection between the fixing member 73 and the sleeve 12, and of course, the fixing member 73 can also be directly fixedly connected with the inner peripheral wall of the sleeve 12. One end of the fixing piece 73 far away from the inner wall of the sleeve 12 is rotatably connected with the rotating shaft 20 through a third bearing 74, so that stability of the fixing piece 73 is further guaranteed, the center position of the fixing piece 73 is prevented from shifting along the axial direction of the rotating shaft 20 due to the action of gravity, stability of the encoder 70 is guaranteed, and accuracy of measurement of the encoder 70 is improved.

In the mounting process, the driving assembly 30 is mounted into the sleeve 12 through the second opening 122, the fixing portion 31 is connected with the sleeve 12, and the driving portion 32 is connected with the rotating shaft 20. The fixing member 73 is then fixedly mounted to the inner wall of the sleeve 12 through the second opening 122, the main body portion 71 of the encoder 70 is connected to the fixing member 73, and the rotating portion 72 is connected to the rotating shaft 20. Finally, the first sealing member 41 is mounted between the base 10 and the cover 40, and the cover 40 is closed to the second opening 122 to seal the second opening 122.

As shown in fig. 1 to 2, the pan-tilt assembly 100 further includes a cover 80, where the cover 80 is covered outside the sleeve 12 and is sealed and fixed with the base 11. The cover 80 is provided outside the sleeve 12 for protecting the elements inside the sleeve 12, and can also be used for supporting other external elements such as the pitch assembly 200 connected to the shaft 20, and can also be used for mounting other elements between the sleeve 12 and the cover 80. A second sealing member 81 is disposed between the cover 80 and the base 11 to prevent external moisture or dust from entering the cover 80 through a gap between the cover 80 and the base 11 to affect normal use of other components. Wherein, the cover 80 is detachably fixed with the base 11 by means of screws, buckles, etc. The cover 80 may be formed by casting, and the casting has the characteristics of high precision, light weight, etc., so that the overall precision of the pan-tilt assembly 100 is high, and the light weight degree is high.

As shown in fig. 6, the present utility model further provides a camera, which includes a pitching assembly 200 and the pan-tilt assembly 100 described above, wherein the pitching assembly 200 is connected to the rotating shaft 20 through the first opening 121. When the rotating shaft 20 rotates, the pitching assembly 200 can be driven to rotate integrally along the axis of the rotating shaft 20, so that the shooting angle in the horizontal direction can be adjusted. The pitching assembly 200 can also independently drive the lens to rotate along a horizontal axis, so as to realize the adjustment of the shooting angle in the vertical direction.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of the utility model should be determined from the following claims.

Claims (10)

1. A pan-tilt assembly (100), comprising:

the base (10) comprises a base body (11) and a sleeve (12) integrally arranged on the base body (11), wherein one end, far away from the base body (11), of the sleeve (12) is provided with a first opening (121);

a rotating shaft (20) rotatably provided in the sleeve (12) and capable of driving an external element through the first opening (121); and

the driving assembly (30) is arranged in the sleeve (12) and is used for driving the rotating shaft (20) to rotate.

2. The pan-tilt assembly (100) according to claim 1, wherein an end of the sleeve (12) facing away from the first opening (121) is provided with a second opening (122), the pan-tilt assembly (100) further comprising a cover plate (40), the cover plate (40) being detachably covered with the second opening (122).

3. The pan-tilt assembly (100) of claim 2, wherein the pan-tilt assembly (100) further comprises a first seal (41) disposed between the cover plate (40) and the base (10).

4. The pan-tilt assembly (100) according to claim 1, wherein a first mounting location (123) is provided on an inner wall of the sleeve (12), the pan-tilt assembly (100) further comprising a bearing assembly (50) provided at the first mounting location (123), the bearing assembly (50) rotatably supporting the rotating shaft (20).

5. The pan-tilt assembly (100) according to claim 4, wherein the inner circumferential wall of the sleeve (12) is provided with a first step (124), the outer circumferential wall of the rotating shaft (20) is provided with a second step (21), and the pan-tilt assembly (100) further comprises a limiting member (60) provided to the sleeve (12);

the first step (124) and the limiting piece (60) are arranged around to form the first installation position (123), the outer ring of the bearing assembly (50) is limited, and the second step (21) is used for limiting the inner ring of the bearing assembly (50).

6. The pan-tilt assembly (100) of claim 1, wherein the inner wall of the sleeve (12) is provided with a second mounting location (125), and the drive assembly (30) is disposed at the second mounting location (125).

7. The pan-tilt assembly (100) according to claim 6, wherein the driving assembly (30) comprises a fixing portion (31) and a driving portion (32) rotatably connected, the fixing portion (31) is fixedly arranged at the second mounting position (125), and the driving portion (32) is fixedly connected with the rotating shaft (20).

8. The pan-tilt assembly (100) of claim 1, wherein the pan-tilt assembly (100) further comprises an encoder (70) disposed to the shaft (20).

9. The pan-tilt assembly (100) according to claim 1, wherein the pan-tilt assembly (100) further comprises a cover (80), and the cover (80) is covered outside the sleeve (12) and is sealed and fixed with the base (11).

10. A video camera, comprising:

a pitch assembly (200); and

the pan-tilt assembly (100) of any of claims 1 to 9, the pitch assembly (200) being connected to the spindle (20) through the first opening (121).