PTZ and PTZ cameras

Abstract

The present invention discloses a horizontal pan-tilt head and a pan-tilt head camera, wherein the horizontal pan-tilt head comprises a first shell, a second shell, a bearing assembly and a bearing assembly, wherein the first shell is provided with a mounting groove, the bottom wall of the mounting groove is provided with a rotating shaft, the second shell is provided in the mounting groove, the second shell is provided with an axial hole for the rotating shaft to pass through, the bearing assembly is provided between the outer periphery of the second shell and the groove wall of the mounting groove, the bearing assembly is respectively in rolling contact with the first shell and the second shell, the bearing assembly is sleeved on the rotating shaft and connected with the second shell, so that the first shell rotates relative to the second shell. The technical solution of the present invention improves the stability of the rotation of the horizontal pan-tilt head.

Description

Technical Field

[0001] The invention relates to the technical field of camera equipment, and in particular to a horizontal pan head and a pan head camera using the horizontal pan head. Background Art

[0002] The PTZ is a supporting device for installing and fixing mobile phones, cameras, camcorders, etc. Fixed PTZ is suitable for situations where the monitoring range is not large. After the camera is installed on the fixed PTZ, the horizontal and pitch angles of the camera can be adjusted by rotating it. When the best working posture is achieved, just lock the adjustment mechanism.

[0003] In the related art, the upper and lower shells of the horizontal pan head are rotatably connected by a single bearing. If the camera is heavy, the upper and lower shells of the horizontal pan head are easy to loosen, and the horizontal pan head is unstable when rotating. Summary of the invention

[0004] The main purpose of the present invention is to provide a horizontal pan-tilt head and a pan-tilt head camera, aiming at improving the stability of the rotation of the horizontal pan-tilt head.

[0005] To achieve the above object, the horizontal pan head proposed by the present invention comprises:

[0006] A first shell, wherein the first shell is provided with a mounting groove, and a rotating shaft is protruded from a bottom wall of the mounting groove;

[0007] A second shell, the second shell is arranged in the installation groove, and the second shell is provided with an axis hole for the rotating shaft to pass through;

[0008] A bearing assembly, the bearing assembly being disposed between the outer periphery of the second shell and the groove wall of the mounting groove, the bearing assembly being in rolling contact with the first shell and the second shell respectively; and

[0009] A bearing assembly is sleeved on the rotating shaft and connected to the second housing so that the first housing can rotate relative to the second housing.

[0010] Optionally, a positioning ring groove is provided at one end of the rotating shaft away from the bottom wall of the mounting groove, and the bearing assembly comprises:

[0011] A thrust bearing, wherein the thrust bearing is fixedly sleeved on the rotating shaft;

[0012] an elastic gasket, the elastic gasket being sleeved on the rotating shaft and located on a side of the thrust bearing facing away from the bottom wall of the mounting groove, the elastic gasket being in elastic contact with one side of the thrust bearing; and

[0013] The retaining spring is accommodated and limited in the positioning ring groove, and the retaining spring elastically abuts against a side of the elastic gasket facing away from the thrust bearing.

[0014] Optionally, the thrust bearing comprises:

[0015] A rolling element, wherein the rolling element is fixedly sleeved on the rotating shaft;

[0016] a first thrust washer, wherein the first thrust washer is movably sleeved on the rotating shaft, one side of the first thrust washer is in rolling contact with the rolling element, and the other side of the first thrust washer is in limiting contact with the second housing; and

[0017] The second thrust washer is located on a side of the rolling element facing away from the first thrust washer and is movably sleeved on the rotating shaft. One side of the second thrust washer is in rolling contact with the rolling element, and the other side of the second thrust washer is in elastic contact with the elastic washer.

[0018] Optionally, a fixing groove is formed on a side of the second shell facing away from the first shell, the bottom wall of the fixing groove is formed with the axial hole, and the bearing assembly is disposed in the fixing groove.

[0019] Optionally, a limiting ring is provided on the periphery of the bottom wall of the fixing groove, and the outer periphery of the bearing assembly is in limiting contact with the limiting ring.

[0020] Optionally, a guide slope is provided on a side of the limiting ring platform facing away from the bottom wall of the mounting groove, and the guide slope is inclined from the side wall of the fixing groove toward the bottom wall of the fixing groove;

[0021] And / or, the limiting ring includes a plurality of limiting platforms, the plurality of limiting platforms are arranged around the periphery of the bottom wall of the fixing groove, and the outer periphery of the bearing assembly is in limiting contact with the plurality of limiting platforms.

[0022] Optionally, the bearing assembly includes:

[0023] A retainer, the retainer is clamped between the groove wall of the mounting groove and the second shell, the retainer is provided with a plurality of mounting holes, and the plurality of mounting holes are arranged at intervals; and

[0024] A plurality of balls, each of which is accommodated and confined in one of the mounting holes and respectively rolls against the first shell and the second shell.

[0025] Optionally, the plurality of mounting holes include a plurality of first mounting holes and a plurality of second mounting holes, and the retaining frame includes:

[0026] a first ring body, the first ring body being disposed adjacent to the bottom wall of the mounting groove, the first ring body being provided with a plurality of first mounting holes disposed at intervals, the plurality of first mounting holes being located on the same circumference, and each of the first mounting holes being provided with a ball; and

[0027] The second ring body is connected to the side of the first ring body facing away from the bottom wall of the mounting groove, and the diameter of the second ring body is larger than the diameter of the first ring body. The second ring body is provided with a plurality of second mounting holes arranged at intervals, and the plurality of second mounting holes are on the same circumference, and each of the second mounting holes is provided with a ball.

[0028] Optionally, a rolling ring groove is formed on the side wall of the mounting groove, and the plurality of balls are in rolling contact with the groove wall of the rolling ring groove;

[0029] And / or, a limiting ring groove is provided on the outer peripheral wall of the second shell, and the plurality of balls are in rolling contact with the groove wall of the limiting ring groove.

[0030] The present invention further provides a pan-tilt camera, the pan-tilt camera comprising:

[0031] A pan / tilt head as described above; and

[0032] A camera is connected to the first shell of the horizontal pan head.

[0033] The technical solution of the present invention is to install the second shell in the installation groove by setting a mounting groove on the first shell, and at the same time, to set a bearing assembly between the wall of the mounting groove of the first shell and the outer periphery of the second shell, and the bearing assembly is respectively in rolling contact with the first shell and the second shell to realize that the first shell is supported by the second shell and the first shell rotates relative to the second shell. In addition, a rotating shaft is convexly provided on the bottom wall of the mounting groove, and the second shell is provided with an axial hole, and the rotating shaft is passed through the axial hole, and the rotating shaft is connected to the second shell through a bearing assembly to realize the rotation of the first shell relative to the second shell. In this way, the first shell and the second shell are fixedly connected and rotated by the cooperation of the bearing assembly and the bearing assembly, so as to improve the connection stability and reduce the possibility of the first shell and the second shell being loosened during rotation. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0035] Figure 1 It is a structural schematic diagram of an embodiment of a horizontal pan platform of the present invention;

[0036] Figure 2 An exploded view of an embodiment of a horizontal pan head of the present invention;

[0037] Figure 3A longitudinal cross-sectional view of an embodiment of a horizontal pan head of the present invention;

[0038] Figure 4 for Figure 3 A partial enlarged view of the middle A;

[0039] Figure 5 for Figure 3 A partial enlarged view of point B in the middle;

[0040] Figure 6 FIG. 4 is an exploded view of another embodiment of the horizontal pan head of the present invention.

[0041] Description of Figure Numbers:

[0042] Label name Label name 100 Horizontal PTZ 231 Guide bevel 1 First shell 24 Limiting ring groove 11 Mounting slot 3 Load bearing components 12 Shaft 31 Cage 121 Locating ring groove 311 The first ring 13 Rolling ring groove 3111 First mounting hole 14 disc 312 The second ring 141 Mounting Column 3121 Second mounting hole 1411 Connection hole 32 Ball 142 Reinforcement 4 Bearing components 143 Positioning column 41 Thrust bearings 15 Hoarding 411 Rolling parts 2 Second shell 412 First thrust washer 21 Shaft hole 413 Second thrust washer 22 Fixed slot 42 Elastic gasket 23 Limiting table 43 Circlip

[0043] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0046] In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0047] The present invention provides a horizontal pan / tilt platform 100 .

[0048] Please refer to Figure 1 , Figure 2 and Figure 3In an embodiment of the present invention, the horizontal pan head 100 includes a first shell 1, a second shell 2, a bearing assembly 3 and a bearing assembly 4. The first shell 1 is provided with a mounting groove 11, and a rotating shaft 12 is protruding from the bottom wall of the mounting groove 11. The second shell 2 is arranged in the mounting groove 11, and the second shell 2 is provided with an axial hole 21 for the rotating shaft 12 to pass through. The bearing assembly 3 is arranged between the outer periphery of the second shell 2 and the groove wall of the mounting groove 11. The bearing assembly 3 is respectively in rolling contact with the first shell 1 and the second shell 2. The bearing assembly 4 is sleeved on the rotating shaft 12 and connected to the second shell 2 so that the first shell 1 rotates relative to the second shell 2.

[0049] In this embodiment, the first housing 1 includes a disc 14 and a panel 15, the panel 15 is arranged around the periphery of the disc 14, and the disc 14 and the panel 15 are enclosed to form a mounting groove 11. Optionally, the disc 14 and the panel 15 are formed in an integrally formed structure, or connected by a fixed connection method such as welding or bonding to improve the connection stability. Optionally, a plurality of mounting columns 141 are provided on the side of the disc 14 facing away from the mounting groove 11, and the plurality of mounting columns 141 are arranged at intervals, and each mounting column 141 is provided with a connection hole 1411. It can be understood that the mounting column 141 can be used to install a camera. Further, a reinforcing rib 142 is connected between each two adjacent mounting columns 141, the height of the reinforcing rib 142 is lower than the height of the mounting column 141, and the reinforcing rib 142 is conducive to the positioning and installation of the camera. At the same time, a positioning column 143 is also provided on the side of the disc 14 facing away from the mounting groove 11, and the positioning column 143 is connected to the reinforcing rib 142. The positioning column 143 is used for positioning and installing with the camera, which improves the convenience of installation.

[0050] In this embodiment, the rotating shaft 12 is arranged at the center of the bottom wall of the installation groove 11, which is conducive to the rotation of the first housing 1 relative to the second housing 2. Optionally, the rotating shaft 12 and the first housing 1 are an integrally formed structure, and the rotating shaft 12 passes through the shaft hole 21 of the second housing 2 and is connected to the bearing assembly 4 to realize the rotation of the first housing 1 relative to the second housing 2 through the rotating shaft 12. Of course, the rotating shaft 12 can also be rotatably connected to the first housing 1, which is not limited here, as long as the rotation of the first housing 1 relative to the second housing 2 can be realized.

[0051] Specifically, the second housing 2 is circular, and the diameter of the second housing 2 is smaller than the diameter of the first housing 1, so that the second housing 2 can be accommodated in the mounting groove 11. At the same time, a bearing assembly 3 is provided between the second housing 2 and the first housing 1. Specifically, the bearing assembly 3 is annular, and is partially sleeved on the outer periphery of the second housing 2, and rolls against the outer periphery of the second housing 2. In addition, when the second housing 2 is accommodated in the mounting groove 11, the bearing assembly 3 rolls against the side wall of the mounting groove 11, that is, the bearing assembly 3 rolls against the enclosure 15 of the first housing 1. At this time, the bearing assembly 3 carries the first housing 1 and the second housing 2, and does not affect the rotation of the first housing 1 relative to the second housing 2. It should be noted that when the second housing 2 is accommodated in the mounting groove 11, the rotating shaft 12 passes through the shaft hole 21 and is connected to the bearing assembly 4. In other words, the horizontal rotation of the first housing 1 and the second housing 2 is more stable through the mutual cooperation and locking of the central bearing assembly 4 and the circumferential bearing assembly 3, so that the small angle tilt will not occur.

[0052] The technical solution of the present invention is to set a mounting groove 11 on the first shell 1, and install the second shell 2 in the mounting groove 11. At the same time, a bearing assembly 3 is set between the groove wall of the mounting groove 11 of the first shell 1 and the outer periphery of the second shell 2, and the bearing assembly 3 is respectively in rolling contact with the first shell 1 and the second shell 2, so that the first shell 1 is carried by the second shell 2 and the first shell 1 rotates relative to the second shell 2. In addition, a rotating shaft 12 is convexly provided on the bottom wall of the mounting groove 11, and the second shell 2 is provided with an axial hole 21. The rotating shaft 12 is passed through the axial hole 21, and the rotating shaft 12 is connected to the second shell 2 through the bearing assembly 4, so that the first shell 1 rotates relative to the second shell 2. In this way, the first shell 1 and the second shell 2 are fixedly and rotatably connected by the bearing assembly 3 and the bearing assembly 4, so as to improve the connection stability and reduce the possibility of the first shell 1 and the second shell 2 being loosened during rotation.

[0053] Please refer to Figure 2 and Figure 3 In one embodiment, a positioning ring groove 121 is provided at one end of the rotating shaft 12 away from the bottom wall of the mounting groove 11, and the bearing assembly 4 includes a thrust bearing 41, an elastic gasket 42 and a retaining spring 43. The thrust bearing 41 is fixedly sleeved on the rotating shaft 12, and the elastic gasket 42 is sleeved on the rotating shaft 12 and is located on the side of the thrust bearing 41 facing away from the bottom wall of the mounting groove 11. The elastic gasket 42 elastically abuts against one side of the thrust bearing 41, and the retaining spring 43 is accommodated and limited in the positioning ring groove 121, and the retaining spring 43 elastically abuts against the side of the elastic gasket 42 facing away from the thrust bearing 41.

[0054] In this embodiment, a positioning ring groove 121 is provided at one end of the rotating shaft 12 away from the bottom wall of the installation groove 11, that is, a positioning ring groove 121 is provided at one end of the rotating shaft 12 passing through the shaft hole 21. Specifically, if the diameter of the shaft hole 21 is larger than the diameter of the rotating shaft 12, the rotating shaft 12 is first moved through the shaft hole 21, and then the thrust bearing 41 is fixedly sleeved on the rotating shaft 12, and the thrust bearing 41 is limitedly abutted against the side of the second shell 2 facing away from the first shell 1; then the elastic gasket 42 is sleeved on the rotating shaft 12 and elastically abutted against the thrust bearing 41; further, the clamping spring 43 is clamped in the positioning ring groove 121 for limiting, so that the clamping spring 43 and the elastic gasket 42 are elastically abutted, that is, the elastic gasket 42 is located between the clamping spring 43 and the thrust bearing 41. Through the elastic force of the elastic gasket 42, the thrust bearing 41 and the second shell 2 are elastically pressed, and further, a flexible force is generated to lock and connect the first shell 1 and the second shell 2, thereby improving the connection stability. It can be understood that the elastic gasket 42 is ring-shaped and can be made of silicone or rubber. Here, the elastic gasket 42 is preferably a corrugated gasket and is made of metal material to improve its strength.

[0055] like Figure 2 As shown, in one embodiment, the thrust bearing 41 includes a rolling member 411, a first thrust washer 412 and a second thrust washer 413. The rolling member 411 is fixedly sleeved on the rotating shaft 12, the first thrust washer 412 is movably sleeved on the rotating shaft 12, one side of the first thrust washer 412 is in rolling contact with the rolling member 411, and the other side of the first thrust washer 412 is in limiting contact with the second shell 2, the second thrust washer 413 is located on the side of the rolling member 411 facing away from the first thrust washer 412, and is movably sleeved on the rotating shaft 12, one side of the second thrust washer 413 is in rolling contact with the rolling member 411, and the other side of the second thrust washer 413 is in elastic contact with the elastic washer 42.

[0056] In this embodiment, the thrust bearing 41 is used to support and fix the rotating shaft 12 to bear the radial load. That is to say, the thrust bearing 41 fixes the rotating shaft 12 so that it can only rotate, and controls its axial and radial movement. Specifically, the rolling element 411 is annular and fixedly sleeved on the rotating shaft 12. The rolling element 411 has two opposite side surfaces, and rolling bodies are arranged on the two side surfaces. The rolling bodies can be balls 32 or rolling strips. When the rolling element 411 rotates with the rotating shaft 12, the rolling body can roll along its circumferential direction. It can be understood that the rolling body rolls and abuts against the first thrust washer 412 and the second thrust washer 413 respectively. It should be noted that the first thrust washer 412 is movably sleeved on the rotating shaft 12 and is limitedly abutted against the second housing 2, and the second thrust washer 413 is movably sleeved on the rotating shaft 12 and is rolled and abutted against the side of the rolling element 411 facing away from the first thrust washer 412. That is, the rolling element 411 is sandwiched between the first thrust washer 412 and the second thrust washer 413. Meanwhile, the first thrust washer 412 and the second thrust washer 413 are stationary relative to the second housing 2. The rolling element 411 rolls between the first thrust washer 412 and the second thrust washer 413 to realize the rotation of the rotating shaft 12 relative to the second housing 2. The provision of the first thrust washer 412 and the second thrust washer 413 can prevent the rolling element from directly rolling against the second housing 2, thereby reducing friction damage to the second housing 2. Thus, only the first thrust washer 412 or the second thrust washer 413 needs to be replaced.

[0057] In one embodiment, a fixing groove 22 is formed on a side of the second housing 2 facing away from the first housing 1 , a shaft hole 21 is formed on a bottom wall of the fixing groove 22 , and the bearing assembly 4 is disposed in the fixing groove 22 .

[0058] In this embodiment, the fixing groove 22 is in the shape of a circular blind hole, and an axial hole 21 penetrating the second housing 2 is provided on the bottom wall of the fixing groove 22, and the diameter of the axial hole 21 is smaller than the diameter of the bottom wall of the fixing groove 22. The axial hole 21 is connected to the fixing groove 22, so that the rotating shaft 12 can pass through the axial hole 21 and extend into the fixing groove 22. The bearing assembly 4 is installed in the fixing groove 22, which is conducive to improving the installation stability. Specifically, the first thrust washer 412 of the thrust bearing 41 abuts against the bottom wall of the fixing groove 22.

[0059] Please refer to Figure 2 , Figure 3 and Figure 4 In one embodiment, a limiting ring is provided at the periphery of the bottom wall of the fixing groove 22, and the outer periphery of the bearing assembly 4 is in limiting contact with the limiting ring.

[0060] In this embodiment, in order to further fix the bearing assembly 4, a limiting ring is disposed around the periphery of the bottom wall of the fixing groove 22, and the outer periphery of the bearing assembly 4 is in limiting contact with the limiting ring 23, further limiting the bearing assembly 4 in the fixing groove 22. Specifically, the outer periphery of the first thrust washer 412 is in limiting contact with the limiting ring, which can prevent the first washer from rotating with the rolling element 411.

[0061] In one embodiment, the limiting ring includes a plurality of limiting platforms 23 , which are disposed around the bottom wall of the fixing groove 22 , and the outer periphery of the bearing assembly 4 is in limiting contact with the plurality of limiting platforms 23 .

[0062] In this embodiment, a plurality of limit platforms 23 are arranged at intervals, and each limit platform 23 is connected to the bottom wall and the side wall of the fixing groove 22, and is in limited contact with the outer peripheral edge of the first thrust washer 412. In this way, after the first thrust washer 412 is installed in the fixing groove 22 and is in limited contact with the limit platform 23, when the first thrust washer 412 needs to be removed, the first thrust washer 412 can be pulled out through the interval between two adjacent limit platforms 23, for example, by using a barb-like tool to extend into the interval to hook out the first thrust washer 412, so as to facilitate removal.

[0063] In one embodiment, a side of the limiting ring platform facing away from the bottom wall of the installation groove 11 is provided with a guide slope 231 , and the guide slope 231 is inclined from the side wall of the fixing groove 22 toward the bottom wall of the fixing groove 22 .

[0064] In this embodiment, a guide bevel 231 is provided on the side of the limiting ring platform facing away from the first housing 1, that is, each limiting platform 23 is provided with a guide bevel 231, and the guide bevel 231 is arranged in an inclined manner from the side wall of the fixing groove 22 toward the bottom wall of the fixing groove 22, and is used to guide the bearing assembly 4 to abut against the bottom wall of the fixing groove 22 when installing the bearing assembly 4. Specifically, when the first thrust washer 412 is installed in the fixing groove 22 and abuts against the bottom wall of the fixing groove 22, the guide bevel 231 can abut against the first thrust washer 412 and guide it to move toward the bottom wall of the fixing groove 22, and finally abut against the side wall of the limiting platform 23, thereby improving the convenience of installation.

[0065] like Figure 2 As shown, in one embodiment, the bearing assembly 3 includes a retaining frame 31 and a plurality of balls 32. The retaining frame 31 is clamped between the groove wall of the mounting groove 11 and the second shell 2. The retaining frame 31 is provided with a plurality of mounting holes, and the plurality of mounting holes are arranged at intervals. Each ball 32 is accommodated and confined in a mounting hole, and respectively rolls against the first shell 1 and the second shell 2.

[0066] In this embodiment, the retainer 31 is annular and surrounds the outer periphery of the second shell 2. It can be understood that the retainer 31 is provided with a plurality of installation holes arranged at intervals, and a plurality of balls 32 are arranged one by one corresponding to the plurality of installation holes, and each ball 32 is clamped in a installation hole. At the same time, the first shell 1 and the second shell 2 are surrounded to form a rolling cavity, and the plurality of balls 32 roll in the rolling cavity and respectively roll and abut with the first shell 1 and the second shell 2 to realize the rotation of the first shell 1 relative to the second shell 2. It can be understood that the plurality of installation holes are evenly spaced along the circumferential direction of the retainer 31, that is, the plurality of balls 32 are evenly distributed on the retainer 31, which can prevent the balls 32 from colliding and rubbing with each other, which is conducive to the rotation of the first shell 1 relative to the second shell 2.

[0067] Please refer to Figure 3 , Figure 5 and Figure 6 In one embodiment, the plurality of mounting holes include a plurality of first mounting holes 3111 and a plurality of second mounting holes 3121, the retaining frame 31 includes a first ring body 311 and a second ring body 312, the first ring body 311 is disposed adjacent to the bottom wall of the mounting groove 11, the first ring body 311 is provided with a plurality of first mounting holes 3111 disposed at intervals, the plurality of first mounting holes 3111 are on the same circumference, each first mounting hole 3111 is provided with a ball 32, the second ring body 312 is connected to a side of the first ring body 311 facing away from the bottom wall of the mounting groove 11, and the diameter of the second ring body 312 is greater than the diameter of the first ring body 311, the second ring body 312 is provided with a plurality of second mounting holes 3121 disposed at intervals, the plurality of second mounting holes 3121 are on the same circumference, and each second mounting hole 3121 is provided with a ball 32.

[0068] In this embodiment, the first ring body 311 and the second ring body 312 adopt an integrally formed structure, which is easy to produce. It can be understood that the diameter of the second ring body 312 is larger than the diameter of the first ring body 311, and the connection between the first ring body 311 and the second ring body 312 is set in an arc transition. Correspondingly, the outer periphery of the second shell 2 is stepped, that is, the diameter of a circle of the outer periphery of the second shell 2 adjacent to the bottom wall of the mounting groove 11 is smaller, and the diameter of a circle away from the bottom wall of the mounting groove 11 is larger, so as to adapt to the first ring body 311 and the second ring body 312 respectively. Further, a plurality of first mounting holes 3111 are spaced apart in the circumferential direction of the first ring body 311, and a plurality of second mounting holes 3121 are spaced apart in the circumferential direction of the second ring body 312. Specifically, the plurality of first mounting holes 3111 and the plurality of second mounting holes 3121 are staggered and spaced apart to improve the stability of the retaining frame 31.

[0069] like Figure 2 As shown, in one embodiment, a rolling ring groove 13 is formed on the side wall of the mounting groove 11 , and a plurality of balls 32 are in rolling contact with the groove wall of the rolling ring groove 13 .

[0070] In this embodiment, the rolling ring grooves 13 are arranged in two rows, and the two rows of rolling ring grooves 13 correspond to the first ring body 311 and the second ring body 312 respectively. Specifically, the rolling ring grooves 13 are used to limit the position of the balls 32. When the balls 32 are limited in the rolling ring grooves 13, they are respectively in rolling contact with the first shell 1 and the second shell 2 to limit the second shell 2 from moving toward the first shell 1. At the same time, the rolling ring grooves 13 can also limit the separation of the balls 32, generating an anti-dropping and separation undercut locking force to further lock the first shell 1 and the second shell 2.

[0071] In one embodiment, a limiting annular groove 24 is formed on the outer peripheral wall of the second housing 2 , and a plurality of balls 32 are in rolling contact with the groove wall of the limiting annular groove 24 .

[0072] In this embodiment, the limiting ring grooves 24 are arranged in two rows, and the two rows of limiting ring grooves 24 correspond to the first ring body 311 and the second ring body 312 respectively, and the two rows of limiting ring grooves 24 correspond to the two rows of rolling ring grooves 13. In this way, when the ball 32 is limited in the rolling ring groove 13, it is also limited in the limiting ring groove 24 accordingly, and the two cooperate with each other to improve the stability of the installation of the ball 32.

[0073] The present invention also provides a pan-tilt camera, which includes a camera and a horizontal pan-tilt 100. The specific structure of the horizontal pan-tilt 100 refers to the above embodiment. Since the pan-tilt camera adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here. Among them, the camera is connected to the first shell 1 of the horizontal pan-tilt 100.

[0074] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A horizontal pan / tilt head, characterized in that: The horizontal platform comprises: A first housing, wherein the first housing is provided with a mounting groove, a rotating shaft is protruded from a bottom wall of the mounting groove, and a positioning ring groove is provided at one end of the rotating shaft away from the bottom wall of the mounting groove; A second shell, the second shell is arranged in the installation groove, and the second shell is provided with an axis hole for the rotating shaft to pass through; A bearing assembly, the bearing assembly is arranged between the outer periphery of the second shell and the groove wall of the mounting groove, the bearing assembly is respectively in rolling contact with the first shell and the second shell, the bearing assembly includes a retaining frame and a plurality of balls, the retaining frame is clamped between the groove wall of the mounting groove and the second shell, the retaining frame is provided with a plurality of mounting holes, the plurality of mounting holes are arranged at intervals, each of the balls is accommodated and limited in one of the mounting holes, and is respectively in rolling contact with the first shell and the second shell; and A bearing assembly, wherein the bearing assembly is sleeved on the rotating shaft and connected to the second housing so that the first housing rotates relative to the second housing, the bearing assembly comprises a thrust bearing, an elastic gasket and a retaining spring, the thrust bearing is fixedly sleeved on the rotating shaft, the elastic gasket is sleeved on the rotating shaft and is located on the side of the thrust bearing facing away from the bottom wall of the mounting groove, the elastic gasket elastically abuts against one side of the thrust bearing, the retaining spring is accommodated and limited in the positioning ring groove, and the retaining spring elastically abuts against the side of the elastic gasket facing away from the thrust bearing.

2. The horizontal pan head according to claim 1, characterized in that: The thrust bearing comprises: A rolling element, wherein the rolling element is fixedly sleeved on the rotating shaft; a first thrust washer, wherein the first thrust washer is movably sleeved on the rotating shaft, one side of the first thrust washer is in rolling contact with the rolling element, and the other side of the first thrust washer is in limiting contact with the second housing; and The second thrust washer is located on a side of the rolling element facing away from the first thrust washer and is movably sleeved on the rotating shaft. One side of the second thrust washer is in rolling contact with the rolling element, and the other side of the second thrust washer is in elastic contact with the elastic washer.

3. The horizontal pan head according to claim 1, characterized in that: A fixing groove is formed on a side of the second shell facing away from the first shell, the bottom wall of the fixing groove is formed with the shaft hole, and the bearing assembly is arranged in the fixing groove.

4. The horizontal pan head according to claim 3, characterized in that: A limiting ring platform is provided on the periphery of the bottom wall of the fixing groove, and the outer periphery of the bearing assembly is in limiting contact with the limiting ring platform.

5. The horizontal pan head according to claim 4, characterized in that: A guide slope is provided on the side of the limiting ring platform facing away from the bottom wall of the mounting groove, and the guide slope is arranged in an inclined manner from the side wall of the fixing groove toward the bottom wall of the fixing groove; And / or, the limiting ring includes a plurality of limiting platforms, the plurality of limiting platforms are arranged around and at intervals along the periphery of the bottom wall of the fixing groove, and the outer periphery of the bearing assembly is in limiting contact with the plurality of limiting platforms.

6. The horizontal pan head according to any one of claims 1 to 5, characterized in that: The plurality of mounting holes include a plurality of first mounting holes and a plurality of second mounting holes, and the retaining frame includes: a first ring body, the first ring body being disposed adjacent to the bottom wall of the mounting groove, the first ring body being provided with a plurality of first mounting holes disposed at intervals, the plurality of first mounting holes being located on the same circumference, and each of the first mounting holes being provided with a ball; and The second ring body is connected to the side of the first ring body facing away from the bottom wall of the mounting groove, and the diameter of the second ring body is larger than the diameter of the first ring body. The second ring body is provided with a plurality of second mounting holes arranged at intervals, and the plurality of second mounting holes are on the same circumference, and each of the second mounting holes is provided with a ball.

7. The horizontal pan head according to any one of claims 1 to 5, characterized in that: The side wall of the installation groove is provided with a rolling ring groove, and the plurality of balls are in rolling contact with the groove wall of the rolling ring groove; And / or, a limiting ring groove is provided on the outer peripheral wall of the second shell, and the plurality of balls are in rolling contact with the groove wall of the limiting ring groove.

8. A pan / tilt camera, characterized in that: The PTZ camera comprises: A horizontal platform as claimed in any one of claims 1 to 7; and A camera is connected to the first shell of the horizontal pan head.

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