A rotating eccentric fixing structure around an axis and a camera assembly
Patent Information
- Application Number
- CN202522476831.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-21
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-11-21
AI Technical Summary
Existing spherical cameras suffer from high sliding friction and short lifespan because the tightness of the fit between the ball head and the housing cannot be adjusted during rotation.
An eccentric fixed structure for rotation around an axis is adopted, including a rotating ball head, a rotation adjustment structure, and a ball head support. By setting the rotation adjustment structure between the rotating ball head and the ball head support, it rolls instead of slides during rotation, thereby reducing friction.
By rotating the adjustment structure, sliding friction is converted into rolling friction, reducing overall friction and extending the lifespan of the camera components.
Smart Images
Figure CN224932472U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of camera technology, and in particular to an eccentric fixing structure for rotation around an axis and a camera assembly. Background Technology
[0002] In recent years, with the rapid development of the Internet of Things, smart homes, and biometric technologies, smart locks have entered countless households. Compared to traditional mechanical locks, smart locks are more secure and reliable, while eliminating the hassle of carrying keys. Smart locks generally consist of a front panel and a back panel, installed on opposite sides of the door. A camera can be installed on the outward-facing front panel for facial recognition or capturing images. Currently, many smart locks on the market have a rotating spherical structure, such as a camera sphere, which rotates up and down or left and right around a central axis. This rotation is achieved by setting a fixed pivot at the center of the sphere, causing it to rotate around this axis to meet usage requirements.
[0003] However, in the current method of rotating a sphere fixed around a pivot, the tightness of the fit between the spherical camera and the housing cannot be adjusted during rotation. This causes sliding friction during the rotation of the pivot, resulting in high frictional wear of the spherical camera and a short service life.
[0004] Therefore, existing technologies still need to be improved and developed. Utility Model Content
[0005] In view of the shortcomings of the prior art, the purpose of this utility model is to provide an eccentric fixing structure for rotation around an axis and a camera assembly, so as to solve the problems of the inability to adjust the tightness of the ball head, large sliding friction, and short service life of existing spherical cameras during rotation.
[0006] The technical solution of this utility model is as follows: In a first aspect, this utility model provides a rotating eccentric fixing structure around an axis, which includes: a rotating ball head, a rotation adjustment structure, and a ball head support; The rotating ball head is connected to the ball head bracket and can rotate relative to the ball head bracket; The ball head bracket is fixedly connected to the rotation adjustment structure, and is used to rotatably connect the rotation adjustment structure to the rotating ball head. The rotation adjustment structure is located between the rotating ball head and the ball head support. When the rotating ball head rotates, the rotation adjustment structure rolls relative to the rotating ball head.
[0007] In a further embodiment of this invention, the bottom of the rotating ball head is provided with a first limiting through hole and a second limiting through hole, and the ball head bracket passes through the first limiting through hole and the second limiting through hole; when the rotating ball head rotates, the ball head bracket slides in the first limiting through hole and the second limiting through hole.
[0008] A further provision of this invention is that the rotation adjustment structure includes at least one outer rolling part, which is disposed on the outer surface of the rotating ball head; the rolling part includes: a ball groove, an outer ball, and an elastic fixing device; wherein... The ball bearing groove is disposed on the outer surface of the rotating ball head; The outer ball is disposed in the ball groove. When the rotating ball head rotates, the outer ball rolls relative to the rotating ball head in the ball groove. The elastic fixing device includes a ball screw, a circular spring, and a ball support plate. The ball screw passes through the ball head bracket. One end of the circular spring abuts against the front end of the ball screw, and the other end of the circular spring abuts against the lower surface of the ball support plate. The upper surface of the ball support plate abuts against the outer ball.
[0009] In a further embodiment of this invention, the rotation adjustment structure includes a first outer rolling part and a second outer rolling part, which are arranged parallel to each other on the outer surface of the rotating ball head.
[0010] In a further embodiment of this invention, the ball joint bracket includes a ball joint fixing structure, a first bracket fixing plate, a second bracket fixing plate, and a connecting seat; wherein, The ball head fixing structure includes a ball head fixing part, a first rotation limiting wing, and a second rotation limiting wing; the ball head fixing part is located inside the rotating ball head, and the first rotation limiting wing and the second rotation limiting wing extend downward from both ends of the ball head fixing part respectively. The first rotation limiting wing is engaged and fixed to the connecting seat through the first limiting through hole, and the second rotation limiting wing is engaged and fixed to the connecting seat through the second limiting through hole. The first bracket fixing plate and the second bracket fixing plate are U-shaped fixing plates. The upper end of the first bracket fixing plate is engaged with the upper surface of the first rotating limiting wing, and the lower end of the first bracket fixing plate is engaged with the lower surface of the connecting seat. The first bracket fixing plate is used to fixally connect the first rotating limiting wing and the connecting seat. The upper end of the second bracket fixing plate is engaged with the upper surface of the second rotating limiting wing, and the lower end of the second bracket fixing plate is engaged with the lower surface of the connecting seat. The second bracket fixing plate is used to fixally connect the second rotating limiting wing and the connecting seat.
[0011] In a further embodiment of this invention, the rotation adjustment structure further includes an inner rolling part, which comprises an inner ball retaining groove and inner balls; wherein, The inner ball retaining groove is located on the inner surface of the rotating ball head; The inner ball is disposed at the bottom of the inner ball limiting groove, and the inner ball abuts against the lower surface of the ball head fixing part. When the rotating ball head rotates, the inner ball rolls relative to the rotating ball head in the inner ball limiting groove.
[0012] A further feature of this invention is that a ball retaining groove is provided on the lower surface of the ball head fixing part, and the inner diameter of the ball retaining groove is greater than or equal to the inner diameter of the inner ball; the ball retaining groove abuts against the inner ball and is used to restrict the inner ball in the inner ball limiting groove.
[0013] Secondly, this utility model also provides a camera assembly, which includes the above-mentioned eccentric fixing structure for rotating around an axis and a ball joint connector, wherein the eccentric fixing structure for rotating around an axis is connected to the connector of the eccentric fixing structure for rotating around an axis by a mechanical screw.
[0014] In a further embodiment of this invention, at least one auxiliary structure is provided between the ball joint connector and the rotating ball joint of the eccentrically fixed structure that rotates around the axis.
[0015] This invention provides an eccentrically fixed structure for rotation around an axis and a camera assembly. The eccentrically fixed structure includes a rotating ball head, a rotation adjustment structure, and a ball head support. The rotating ball head is connected to the ball head support and can rotate relative to the ball head support. The ball head support is fixedly connected to the rotation adjustment structure, which is used to rotatably connect the rotation adjustment structure to the rotating ball head. The rotation adjustment structure is located between the rotating ball head and the ball head support. When the rotating ball head rotates, the rotation adjustment structure rolls relative to the rotating ball head. This invention, by setting a rotation adjustment structure between the rotating ball heads, and having the rotation adjustment structure roll relative to the rotating ball head when it rotates, converts the sliding friction of the rotating ball head during rotation into rotational friction of the rotation adjustment structure, reducing the overall frictional force of the rotating ball head during rotation and extending the service life of the camera assembly. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of the eccentrically fixed structure rotating around an axis in this utility model.
[0018] Figure 2 This is a front view of the eccentrically fixed structure rotating around an axis in this utility model.
[0019] Figure 3 yes Figure 2 A schematic diagram of the cross-section at position AA.
[0020] Figure 4 This is a left view of the eccentrically fixed structure rotating around an axis in this utility model.
[0021] Figure 5 yes Figure 4 A cross-sectional diagram of the BB position.
[0022] Figure 6 This is an exploded schematic diagram of the eccentrically fixed structure rotating around an axis in this utility model.
[0023] Figure 7 This is a schematic diagram of the outer surface structure of the rotating ball head in this utility model.
[0024] Figure 8 This is a schematic diagram of the inner surface structure of the rotating ball head in this utility model.
[0025] Figure 9 This is a structural schematic diagram of the camera assembly in this utility model.
[0026] The markings in the attached diagram are as follows: 100, rotating ball head; 101, first limiting through hole; 102, second limiting through hole; 103, wire through hole; 200, rotation adjustment structure; 210, outer rolling part; 211, ball groove; 212, outer ball; 213, elastic fixing device; 2131, ball fastening screw; 2132, round wire spring; 2133, ball support plate; 220, inner rolling part; 221, inner ball limiting groove; 222, inner ball; 300, ball head bracket; 310, ball head fixing structure; 320, first bracket fixing plate; 330, second bracket fixing plate; 340, connecting seat; 2, ball head connecting seat; 21, front panel; 22, auxiliary structure; 23, auxiliary round wire spring; 24, auxiliary fastening screw. Detailed Implementation
[0027] This utility model provides an eccentric fixing structure for rotation around an axis and a camera assembly. To make the purpose, technical solution, and effects of this utility model clearer and more explicit, the following describes this utility model in further detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of this utility model and are not intended to limit this utility model.
[0028] In the implementation methods and claims, unless otherwise specified in the text, the terms "a," "an," "the," and "the" may also include plural forms. If the embodiments of this utility model involve descriptions of "first," "second," etc., such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.
[0029] It should be further understood that the term "comprising" as used in this specification means the presence of the stated features, integers, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. It should be understood that when we say an element is "connected" or "coupled" to another element, it can be directly connected or coupled to the other element, or there may be intermediate elements. Furthermore, "connected" or "coupled" as used herein can include wireless connections or wireless coupling. The term "and / or" as used herein includes all or any unit and all combinations of one or more associated listed items.
[0030] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have the same meaning as in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless specifically defined as herein.
[0031] Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
[0032] The inventors discovered that existing ball-head camera drive mechanisms are generally quite complex. The current method of rotating a ball around a fixed axis inevitably requires an additional outer casing to secure the axis, increasing component costs. Furthermore, the fixed axis in this method means the tightness of the fit with the ball head cannot be adjusted, leading to low assembly efficiency due to tolerance limitations. Additionally, the rotation of the axis in this type of ball-head camera relies on sliding friction, resulting in a short lifespan. Moreover, adding an outer casing to the axis increases the overall size of the product, leading to hidden costs associated with the smart lock.
[0033] To solve the above-mentioned technical problems, firstly, please refer to... Figure 1 This utility model provides a rotating eccentric fixing structure, which includes: a rotating ball head 100, a rotation adjustment structure 200, and a ball head support 300; the rotating ball head 100 is connected to the ball head support 300 and can rotate relative to the ball head support 300; the ball head support 300 is fixedly connected to the rotation adjustment structure 200 for rotatingly connecting the rotation adjustment structure 200 and the rotating ball head 100; the rotation adjustment structure 200 is located between the rotating ball head 100 and the ball head support 300, and when the rotating ball head 100 rotates, the rotation adjustment structure 200 rolls relative to the rotating ball head 100.
[0034] Specifically, the rotating ball head 100 can be solid or hollow, and can be replaced with any spherical or hemispherical structure. Preferably, in some preferred embodiments of this utility model, the rotating ball head 100 is a hemispherical bowl-shaped hollow structure, which can be applied to smart door locks. When the rotating ball head 100 needs to rotate, the user can rotate it by applying external force, or it can be driven by a driving device provided on the eccentric fixed structure rotating around the axis, providing a rotational driving force to the rotating ball head 100.
[0035] Please refer to the following: Figure 7 and Figure 8 In a further embodiment of this invention, the bottom of the rotating ball head 100 is provided with a first limiting through hole 101 and a second limiting through hole 102, and the ball head support 300 passes through the first limiting through hole 101 and the second limiting through hole 102; when the rotating ball head 100 rotates, the ball head support 300 slides in the first limiting through hole 101 and the second limiting through hole 102. Specifically, the first limiting through hole 101 and the second limiting through hole 102 are elongated through holes used to limit the extreme positions of the rotation of the rotating ball head 100. When the rotating ball head 100 rotates relative to the ball head support 300, the position of the ball head support 300 passing through the first limiting through hole 101 and the second limiting through hole 102 changes accordingly. When the ball head support 300 moves to the extreme position of the first limiting through hole 101 and the second limiting through hole 102 and abuts against the end of the first limiting through hole 101 and the second limiting through hole 102, the rotating ball head 100 rotates to the extreme position, providing a reverse force as a resistance, preventing the ball head support 300 from moving further.
[0036] Furthermore, please refer to the following: Figure 2 , Figure 3 , Figure 4 and Figure 5The rotation adjustment structure 200 includes at least one outer rolling part 210, which is disposed on the outer surface of the rotating ball head 100. The outer rolling part 210 includes a ball groove 211, an outer ball 212, and an elastic fixing device 213. The ball groove 211 is disposed on the outer surface of the rotating ball head 100. The outer ball 212 is disposed in the ball groove 211, and when the rotating ball head 100 rotates, the outer ball 212 moves within the ball groove 211. The rotating ball head 100 is rolled; the elastic fixing device 213 includes a ball fastening screw 2131, a circular spring 2132 and a ball support plate 2133. The ball fastening screw 2131 passes through the ball head bracket 300. One end of the circular spring 2132 abuts against the front end of the ball fastening screw 2131, and the other end of the circular spring 2132 abuts against the lower surface of the ball support plate 2133. The upper surface of the ball support plate 2133 abuts against the outer ball 212.
[0037] Specifically, the outer ball bearing 212 can be at least one of carbon steel balls, alloy steel balls, stainless steel balls, resin steel balls, ceramic steel balls, and fiberglass balls. One or more outer rolling parts 210 can be selected, and the ball bearing groove 211 is oriented in the same direction as the rotation direction of the rotating ball head 100. The ball bearing groove 211 can be a long, smooth channel to reduce the rolling resistance of the outer ball bearing 212 within it. Alternatively, the ball bearing groove 211 can be composed of several spherical grooves; specifically, the spherical grooves are partial spherical surfaces that fit the surface of the outer ball bearing 212. When the rotating ball head 100 rotates, the outer ball bearing 212 automatically rolls into adjacent spherical grooves to achieve stepped adjustment of the rotation angle of the rotating ball head 100. The ball screw 2131 is screwed to the ball head bracket 300. The front end of the ball screw 2131 is used to house the circular spring 2132. The degree of compression of the circular spring 2132 is related to the tightening degree of the ball screw 2131. When the ball screw 2131 is tightened, the stroke of the circular spring 2132 is compressed, thereby increasing the force applied to the ball support plate 2133, and thus increasing the resistance when the ball head 100 rotates. Correspondingly, when the ball screw 2131 is unscrewed, the stroke of the circular spring 2132 is released, and the force on the ball support plate 2133 gradually decreases to zero. Thus, the user can adjust the tightness between the ball head 100 and the ball head bracket 300 by adjusting the ball screw 2131. During the production and installation process, the tightness of the ball head bracket 300 and the rotating ball head 100 can be adjusted according to their tolerances to improve the assembly efficiency of the eccentric fixing structure rotating around the axis.
[0038] The rotation adjustment structure 200 includes a first outer rolling portion 210 and a second outer rolling portion 210, which are arranged parallel to each other on the outer surface of the rotating ball head 100. The first and second outer rolling portions 210 have the same structure and provide a vertically upward supporting force. Specifically, the ball support plates 2133 of the first and second outer rolling portions 210 can be integrally formed, so that the first and second outer rolling portions 210 simultaneously apply forces to the ball support plates 2133. It should be noted that the rotation adjustment structure 200 can also provide other outer rolling portions 210 at any position where sliding friction may occur, to make the rotating ball head 100 of the eccentrically fixed structure rotate more evenly, as long as the direction of the ball grooves 211 is consistent; this invention does not impose any limitations on this.
[0039] In some preferred embodiments of this utility model, please refer to Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 The ball joint bracket 300 includes a ball joint fixing structure 310, a first bracket fixing plate 320, a second bracket fixing plate 330, and a connecting seat 340; wherein, the ball joint fixing structure 310 includes a ball joint fixing part, a first rotation limiting wing, and a second rotation limiting wing; the ball joint fixing part is located inside the rotating ball joint 100, and the first rotation limiting wing and the second rotation limiting wing extend downward from both ends of the ball joint fixing part respectively. The first rotation limiting wing is engaged and fixed to the connecting seat 340 through the first limiting through hole 101, and the second rotation limiting wing is engaged and fixed to the connecting seat 340 through the second limiting through hole 102; the first bracket fixing plate 320... The first bracket fixing plate 320 and the second bracket fixing plate 330 are U-shaped fixing plates. The upper end of the first bracket fixing plate 320 is engaged with the upper surface of the first rotating limiting wing, and the lower end of the first bracket fixing plate 320 is engaged with the lower surface of the connecting seat 340. The first bracket fixing plate 320 is used to fix the first rotating limiting wing and the connecting seat 340. The upper end of the second bracket fixing plate 330 is engaged with the upper surface of the second rotating limiting wing, and the lower end of the second bracket fixing plate 330 is engaged with the lower surface of the connecting seat 340. The second bracket fixing plate 330 is used to fix the second rotating limiting wing and the connecting seat 340.
[0040] Specifically, the ball-head fixing part of the ball-head fixing structure 310 is located on the inner surface of the rotating ball head 100, and is fixedly connected to the first support fixing plate 320, the second support fixing plate 330, and the connecting seat 340 located on the outer surface of the rotating ball head 100 via the first and second rotating limiting wings extending downward from both ends. The width of the first rotating limiting wing is smaller than the width of the first limiting through hole 101, and the width of the second rotating limiting wing is smaller than the width of the second limiting through hole 102. The first and second rotating limiting wings can rotate freely in the through hole and are used to limit the maximum rotation degree of the rotating ball head 100. The connecting seat 340 includes a fixing connection part for connecting the ball-head fixing part, and protruding fixing parts are respectively provided on both sides of the fixing connection part. The ball-head fixing structure 310, the first support fixing plate 320, the second support fixing plate 330, and the connecting seat 340 can be made of sheet metal or die casting, or plastic injection molding or any material with a certain strength.
[0041] Furthermore, the rotation adjustment structure 200 also includes an inner rolling part 220, which includes an inner ball retaining groove 221 and an inner ball 222. The inner ball retaining groove 221 is located on the inner surface of the rotating ball head 100. The inner ball 222 is disposed at the bottom of the inner ball retaining groove 221 and abuts against the lower surface of the ball head fixing part. When the rotating ball head 100 rotates, the inner ball 222 rolls relative to the rotating ball head 100 in the inner ball retaining groove 221. The ball head bracket 300 supports the rotating ball head 100 through the ball head fixing part disposed on the inner surface of the rotating ball head 100 and secures the rotating ball head 100 to the ball head bracket 300. To reduce frictional loss between the ball head fixing part and the inner surface of the rotating ball head 100, an inner rolling part 220 is provided, located between the ball head fixing part and the rotating ball head 100. The extending direction of the inner ball limiting groove 221 is consistent with the rotation direction of the rotating ball head 100. One or more inner rolling parts 220 can be provided, with two being the preferred number, and the inner ball limiting grooves 221 of the two inner rolling parts 220 being parallel to each other. It should be noted that when several limiting grooves or through holes are parallel to each other in this invention, it can mean that they are parallel in space, or that their projections on a spherical circle passing through the center of the ball are parallel, as long as the inner ball 222 of the inner rolling part 220 or the outer ball 212 of the outer rolling part 210 can roll in the slot or limiting groove when the rotating ball head 100 rotates. Furthermore, the inner ball 222, outer ball 212, or any ball structure used to convert sliding friction into rolling friction can be replaced by a shaft or gear, which will not be elaborated here.
[0042] In some preferred embodiments, a ball retaining groove is provided on the lower surface of the ball head fixing part, and the inner diameter of the ball retaining groove is greater than or equal to the inner diameter of the inner ball 222; the ball retaining groove abuts against the inner ball 222 to confine the inner ball 222 within the inner ball limiting groove 221. Specifically, in order to reduce the space occupied by the inner rolling part 220 inside the rotating ball head 100, the ball retaining groove is provided to fix the inner ball 222. The ball retaining groove is bowl-shaped, hemispherical, or crown-shaped, and the inner ball 222 can rotate freely in the ball retaining groove, achieving rolling friction between the inner surface of the rotating ball head 100 and the ball head fixing part.
[0043] In another preferred embodiment of this utility model, the rotating ball head 100 is also provided with a wire hole 103. Correspondingly, through holes or clearance spaces are provided at corresponding positions on the ball support plate 2133 of the outer rolling part 210 of the rotation adjustment structure 200, the ball head fixing structure 310 of the ball head bracket 300, the first bracket fixing plate 320, the second bracket fixing plate 330, the connecting seat 340, or any other parts. A wired sensor, camera, or other electronic components can be installed in the rotating ball head 100. The electronic components are connected to an external power line or signal line through the wire hole 103.
[0044] Secondly, such as Figure 9 As shown, this utility model also provides a camera assembly, which includes the aforementioned eccentric rotating fixing structure and a ball joint connector 2340. The eccentric rotating fixing structure is connected to the connector 340 of the eccentric rotating fixing structure via mechanical screws. The ball joint connector 2340 includes a bowl-shaped front panel 21, which abuts against the outer surface of the rotating ball joint 100 of the eccentric rotating fixing structure, for accommodating the rotating ball joint 100. The ball joint connector 2340 has an accommodating space inside, and a threaded fixing hole is provided on the inner surface of the accommodating space for fixed connection with the ball joint bracket 300 of the eccentric rotating fixing structure via mechanical screws. When the camera assembly is working, the rotating ball joint 100 rotates up and down around the axial rotation point S. The accommodating space is used to accommodate the rotation adjustment mechanism and the ball joint bracket 300, and can also be used to accommodate the transmission line that needs to be connected to the rotating ball joint 100.
[0045] Furthermore, at least one auxiliary structure 22 is provided between the ball joint connector 2340 and the rotating ball joint 100 of the eccentrically fixed structure for rotation around the axis. The auxiliary structure 22 is a ball bearing. Correspondingly, an auxiliary circular spring 23 and an auxiliary fastening screw 24 matching the ball bearing can also be provided. These can be positioned at locations with significant sliding friction wear between the rotating ball joint 100 and the ball joint connector 2340. For example, the auxiliary structure 22 is provided between the rotating ball joint 100 and the front panel 21, and can be located on the front panel 21 to reduce friction loss between the rotating ball joint 100 and the front panel 21. It should be noted that the auxiliary structure 22 can also be provided on the eccentrically fixed structure for rotation around the axis and serve as a rotation adjustment structure 200 to reduce sliding friction loss; this will not be elaborated further here.
[0046] This invention provides an eccentrically fixed structure for rotation around an axis and a camera assembly. The eccentrically fixed structure includes a rotating ball head, a rotation adjustment structure, and a ball head support. The rotating ball head is connected to the ball head support and can rotate relative to the ball head support. The ball head support is fixedly connected to the rotation adjustment structure, which is used to rotatably connect the rotation adjustment structure to the rotating ball head. The rotation adjustment structure is located between the rotating ball head and the ball head support. When the rotating ball head rotates, the rotation adjustment structure rolls relative to the rotating ball head. This invention, by setting a rotation adjustment structure between the rotating ball heads, and having the rotation adjustment structure roll relative to the rotating ball head when it rotates, converts the sliding friction of the rotating ball head during rotation into rotational friction of the rotation adjustment structure, reducing the overall frictional force of the rotating ball head during rotation and extending the service life of the camera assembly.
[0047] It should be understood that the application of this utility model is not limited to the examples above. Those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.
Claims
1. A rotating eccentric fixed structure, characterized in that, include: Rotating ball head, rotation adjustment structure, and ball head support; The rotating ball head is connected to the ball head bracket and can rotate relative to the ball head bracket; The ball head bracket is fixedly connected to the rotation adjustment structure, and is used to rotatably connect the rotation adjustment structure to the rotating ball head. The rotation adjustment structure is located between the rotating ball head and the ball head support. When the rotating ball head rotates, the rotation adjustment structure rolls relative to the rotating ball head.
2. The eccentrically fixed structure for rotation about an axis as described in claim 1, characterized in that, The bottom of the rotating ball head is provided with a first limiting through hole and a second limiting through hole, and the ball head bracket passes through the first limiting through hole and the second limiting through hole; when the rotating ball head rotates, the ball head bracket slides in the first limiting through hole and the second limiting through hole.
3. The eccentrically fixed structure for rotation about an axis according to claim 2, characterized in that, The rotation adjustment structure includes at least one outer rolling part, which is disposed on the outer surface of the rotating ball head; the rolling part includes: a ball groove, an outer ball, and an elastic fixing device; wherein... The ball bearing groove is disposed on the outer surface of the rotating ball head; The outer ball is disposed in the ball groove. When the rotating ball head rotates, the outer ball rolls relative to the rotating ball head in the ball groove. The elastic fixing device includes a ball screw, a circular spring, and a ball support plate. The ball screw passes through the ball head bracket. One end of the circular spring abuts against the front end of the ball screw, and the other end of the circular spring abuts against the lower surface of the ball support plate. The upper surface of the ball support plate abuts against the outer ball.
4. The eccentrically fixed structure for rotation about an axis according to claim 3, characterized in that, The rotation adjustment structure includes a first outer rolling part and a second outer rolling part, which are arranged parallel to each other on the outer surface of the rotating ball head.
5. The eccentrically fixed structure for rotation about an axis according to claim 3, characterized in that, The ball joint bracket includes a ball joint fixing structure, a first bracket fixing plate, a second bracket fixing plate, and a connecting seat; wherein... The ball head fixing structure includes a ball head fixing part, a first rotation limiting wing, and a second rotation limiting wing; the ball head fixing part is located inside the rotating ball head, and the first rotation limiting wing and the second rotation limiting wing extend downward from both ends of the ball head fixing part respectively. The first rotation limiting wing is engaged and fixed to the connecting seat through the first limiting through hole, and the second rotation limiting wing is engaged and fixed to the connecting seat through the second limiting through hole. The first bracket fixing plate and the second bracket fixing plate are U-shaped fixing plates. The upper end of the first bracket fixing plate is engaged with the upper surface of the first rotating limiting wing, and the lower end of the first bracket fixing plate is engaged with the lower surface of the connecting seat. The first bracket fixing plate is used to fixally connect the first rotating limiting wing and the connecting seat. The upper end of the second bracket fixing plate is engaged with the upper surface of the second rotating limiting wing, and the lower end of the second bracket fixing plate is engaged with the lower surface of the connecting seat. The second bracket fixing plate is used to fixally connect the second rotating limiting wing and the connecting seat.
6. The eccentrically fixed structure for rotation about an axis according to claim 5, characterized in that, The rotation adjustment structure further includes an inner rolling part, which comprises an inner ball limiting groove and inner balls; wherein... The inner ball retaining groove is located on the inner surface of the rotating ball head; The inner ball is disposed at the bottom of the inner ball limiting groove, and the inner ball abuts against the lower surface of the ball head fixing part. When the rotating ball head rotates, the inner ball rolls relative to the rotating ball head in the inner ball limiting groove.
7. The eccentrically fixed structure for rotation about an axis according to claim 6, characterized in that, A ball retaining groove is provided on the lower surface of the ball head fixing part. The inner diameter of the ball retaining groove is greater than or equal to the inner diameter of the inner ball. The ball retaining groove abuts against the inner ball and is used to restrict the inner ball in the inner ball limiting groove.
8. A camera assembly, characterized in that, It includes the eccentric fixing structure and ball joint as described in any one of claims 1-7, wherein the eccentric fixing structure is connected to the ball joint of the eccentric fixing structure by means of a mechanical screw.
9. The camera assembly as claimed in claim 8, characterized in that, At least one auxiliary structure is provided between the ball joint connector and the rotating ball joint of the eccentric fixed structure that rotates around the axis.