CN115574230A

CN115574230A - Spherical tripod head structure

Info

Publication number: CN115574230A
Application number: CN202211157220.6A
Authority: CN
Inventors: 温文辉
Original assignee: Zhongshan Baoyi Hardware Plastic Product Co ltd
Current assignee: Zhongshan Baoyi Hardware Plastic Product Co ltd
Priority date: 2022-09-22
Filing date: 2022-09-22
Publication date: 2023-01-06
Also published as: WO2024060473A1

Abstract

The invention discloses a spherical tripod head structure, comprising: the installation seat is provided with a spherical cavity with an upward opening, a spherical piece is rotatably arranged in the spherical cavity, the opening edge of the spherical cavity can prevent the spherical piece from being separated from the spherical cavity, the installation seat is provided with a pushing piece which is pushed against the spherical piece, and the pushing piece can push up the spherical piece upwards along the central line of the opening of the spherical cavity so as to enable the opening edge of the spherical cavity to be in full contact with the surface of the spherical piece. The spherical pan-tilt structure is characterized in that the spherical pan-tilt structure is provided with a pushing piece which is used for pushing the spherical piece upwards along the central line of the opening of the spherical cavity, so that the opening edge of the spherical cavity can be in full contact with the outer surface of the spherical piece, the contact force between the outer surface of the spherical piece and each position of the opening edge of the spherical cavity is relatively average, a circle of friction area in close contact can be formed between the outer surface of the spherical piece and the opening edge of the spherical cavity, the locking force of the spherical piece is favorably improved, and the spherical pan-tilt structure can be suitable for application occasions with larger loads.

Description

Spherical tripod head structure

Technical Field

The invention relates to a spherical tripod head structure.

Background

In photography or projection, a pan-tilt is often used to mount an external device such as a camera or a projector, and a spherical pan-tilt is generally arranged to adjust an angular position in order to adjust a direction of photography or projection.

Referring to fig. 4, a conventional spherical holder includes a mounting base 100, a spherical cavity with an upward opening is provided in the mounting base 100, a multi-angle rotating ball 600 is provided in the spherical cavity, the ball 600 is connected with a connecting rod 400 extending out along the opening of the spherical cavity, a threaded ejector rod 310 is provided at a side portion of the mounting base 100, an end portion of the threaded ejector rod 310 extends into the spherical cavity, and an inclined plane push block 500 is provided in the spherical cavity between the end portion of the threaded ejector rod 310 and the ball 600. When the threaded mandril 310 pushes the bevel push block 500 towards the inside of the spherical cavity, the bevel push block 500 can obliquely lift the ball head 600 upwards so that part of the surface of the ball head 600 is in contact with the opening edge of the spherical cavity 101.

The direction of the force applied to the ball 600 by the inclined push block 500 is inclined upward, and the contact force between the surface of the ball 600 and the opening edge of the spherical cavity is different, so that the friction force applied to the surface of the ball 600 by the opening edge of the spherical cavity is unbalanced, and the ball is prone to deflection under the condition that the load of the connecting rod 400 is large.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides the spherical tripod head structure which has large locking force and is suitable for heavy load.

According to the embodiment of the invention, the spherical holder structure comprises: the mounting base, the mounting base is equipped with the ascending spherical chamber of opening, the rotatable sphere piece that is provided with in the spherical chamber, the opening edge in spherical chamber can prevent the sphere piece deviate from in spherical chamber, be equipped with on the mounting base and support in the top of sphere piece pushes away the piece, push away the piece can follow the open-ended central line in spherical chamber upwards jack-up the sphere piece, so that the opening edge in spherical chamber can all contact in the surface of sphere piece.

The spherical holder structure provided by the embodiment of the invention at least has the following beneficial effects:

above spherical tripod head structure is by pushing away the piece along the open-ended central line jack-up sphere piece that makes progress of spherical chamber, make the opening edge in spherical chamber can all contact in the surface of sphere piece, the surface of sphere piece is comparatively average with the tight power of supporting that each position of the opening edge in spherical chamber contacted, can form round in close contact's friction zone between the surface of sphere piece and the opening edge in spherical chamber, make the opening edge in spherical chamber be the state of holding the sphere piece tightly, be favorable to improving the locking force to sphere piece, this spherical tripod head structure can be applicable to the great application scenario of load, ensure projection work or photographic job's stability.

In some embodiments of the present invention, the outer surface of the spherical surface member is a partial spherical surface, a concave cavity is provided inside the spherical surface member, and the pushing member abuts against an inner wall of the concave cavity to make the outer surface of the spherical surface member abut against an opening edge of the spherical cavity.

In some embodiments of the present invention, the spherical surface member is a spherical shell in a segment shape, and the pushing member vertically and upwardly abuts against an inner surface of the spherical shell so that an outer surface of the spherical shell is tightly fitted with an opening edge of the spherical cavity.

In some embodiments of the present invention, the connecting rod is disposed on an outer surface of the spherical shell, and a length direction of the connecting rod extends along a radial direction of the spherical shell.

In some embodiments of the invention, the spherical shell and the connecting rod are of an integral aluminum structure.

In some embodiments of the present invention, the pushing member includes a threaded push rod screwed to the mounting base, a lower end of the threaded push rod extends out of the mounting base, a knob portion is connected to a lower end of the threaded push rod, and a convex portion abutting against an inner surface of the spherical shell is provided at an upper end of the threaded push rod.

In some embodiments of the present invention, the convex portion has a convex arc surface opposite to the inner surface of the spherical shell, and a radius of curvature of the convex arc surface is larger than a radius of curvature of the inner surface of the spherical shell.

In some embodiments of the present invention, the mounting seat includes a lower connecting seat and an upper connecting seat disposed on the lower connecting seat, the lower connecting seat is provided with an arc groove matching with an outer surface of the spherical member, the upper connecting seat has a circle of arc channel matching with the outer surface of the spherical member, an opening of the spherical cavity is disposed on the upper connecting seat and communicates with the arc channel, and the arc channel and the arc groove together define the spherical cavity.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic internal structure diagram of an embodiment of a spherical pan-tilt structure according to the present invention;

FIG. 2 is a schematic view of the spherical elements and connecting rods of the embodiment of FIG. 1 after rotation through a certain angle;

FIG. 3 is an exploded view of the embodiment of FIG. 2;

fig. 4 is a schematic diagram of a prior art spherical pan-tilt structure.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the positional or orientational descriptions referred to, for example, the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., are based on the positional or orientational relationships shown in the drawings and are for convenience of description and simplicity of description only, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 3, a spherical pan-tilt structure according to an embodiment of the present invention includes: the mounting seat 100 is provided with a spherical cavity 101 with an upward opening, a spherical piece 200 is rotatably arranged in the spherical cavity 101, the edge of the opening of the spherical cavity 101 can prevent the spherical piece 200 from being separated from the spherical cavity 101, the mounting seat 100 is provided with a pushing piece 300 which is abutted against the spherical piece 200, and the pushing piece 300 can upwards push up the spherical piece 200 along the center line of the opening of the spherical cavity 101, so that the edge of the opening of the spherical cavity 101 can be completely contacted with the surface of the spherical piece 200.

Above spherical tripod head structure is by pushing up piece 300 upwards jack-up spherical piece 200 along the open-ended central line of spherical chamber 101, make the opening edge of spherical chamber 101 can all contact in the surface of spherical piece 200, the clearance that the surface of spherical piece 200 and each position of the opening edge of spherical chamber 101 contacted is more even, it is more even to support the power, can form round in close contact's friction zone between the surface of spherical piece 200 and the opening edge of spherical chamber 101, make the opening edge of spherical chamber 101 be the state of holding spherical piece 200 tightly, be favorable to improving the locking force to spherical piece 200, this spherical tripod head structure can be applicable to the great application occasion of load, ensure the stability of projection work or photographic work.

Referring to fig. 1 and 2, in some embodiments of the present invention, the outer surface of the spherical member 200 is a partial sphere, the inner part of the spherical member 200 is provided with a cavity 210, and the pushing member 300 abuts against the inner wall of the cavity 210 to push the outer surface of the spherical member 200 against the opening edge of the spherical cavity 101. It will be appreciated that the inner wall of cavity 210 is located at a shorter distance from the edge of the opening of spherical cavity 101 by pushing member 300, compared to the conventional way of applying a bevel-shaped pushing block to the outer surface of the ball head, which is beneficial for transmitting the upward pushing force between the outer surface of spherical member 200 and the edge of the opening of spherical cavity 101.

Referring to fig. 1 and 2, in some embodiments of the present invention, the spherical member 200 is a spherical shell in the shape of a segment of a sphere, and the pushing member 300 vertically pushes up against the inner surface of the spherical shell to make the outer surface of the spherical shell closely fit with the opening edge of the spherical cavity 101. It should be noted that, the inner surface and the outer surface of the spherical shell are concentrically arranged, and no matter the spherical shell rotates to any angle position, the pushing member 300 only needs to move upward by the same distance to abut the spherical shell against the opening edge of the spherical cavity 101, and the material cost can be reduced. In addition, it can be understood that the outer surface of the spherical shell can generate a slight deformation when abutting against the opening edge of the spherical cavity 101, so that the outer surface of the spherical shell and the opening edge of the spherical cavity 101 can achieve a better tight fit effect.

Referring to fig. 1, in some embodiments of the present invention, a connecting rod 400 is disposed on an outer surface of the spherical housing, and a length direction of the connecting rod 400 is extended in a radial direction of the spherical housing, so that the connecting rod 400 can swing toward different directions by the same angle under a limiting effect of an opening of the spherical cavity 101, to widen an angle adjustment range of the connecting rod 400 as much as possible.

Referring to fig. 1, in some embodiments of the present invention, in order to simplify the manufacturing and assembling process and improve the connection strength between the connecting rod 400 and the spherical housing, the spherical housing and the connecting rod 400 are of an integral aluminum structure.

Referring to fig. 1 and 2, in some embodiments of the present invention, the pushing member 300 includes a threaded push rod 310 threadedly coupled to the mounting base 100, a lower end of the threaded push rod 310 protruding out of the mounting base 100, a knob portion 320 coupled to a lower end of the threaded push rod 310, and an upper end of the threaded push rod 310 having a protrusion 330 abutting against an inner surface of the spherical shell. It should be noted that when the screw knob portion 320 is screwed, the threaded rod 310 is moved forward in the up-down direction, and the protrusion 330 abuts up against the inner surface of the spherical housing or moves down away from the inner surface of the spherical housing.

Referring to fig. 1 and 3, in some embodiments of the present invention, in order to obtain a better tightening effect, the convex part 330 has a convex arc 331 opposite to the inner surface of the spherical housing, and the radius of curvature of the convex arc 331 is greater than that of the inner surface of the spherical housing. It is understood that since the radius of curvature of the convex arc surface 331 is greater than the radius of curvature of the inner surface of the spherical shell, the convex arc surface 331 and the inner surface of the spherical shell form a point-to-point contact, and the convex arc surface 331 can still form a single-point contact or a multi-point contact with the inner surface of the spherical shell after the convex arc surface 331 is worn. In other embodiments, the protrusion 330 has a flat surface facing the inner surface of the spherical shell, and thus can form a multi-point contact with the spherical shell.

Referring to fig. 3, in some embodiments of the present invention, the mounting seat 100 includes a lower connecting seat 110 and an upper connecting seat 120 provided on the lower connecting seat 110, the lower connecting seat 110 is provided with a circular arc groove 111 matching with the outer surface of the spherical member 200, the upper connecting seat 120 is provided with a circular arc channel 121 matching with the outer surface of the spherical member 200, the opening of the spherical cavity 101 is provided on the upper connecting seat 120 and communicates with the circular arc channel 121, and the circular arc channel 121 and the circular arc groove 111 together define the spherical cavity 101. When the spherical member 200 is assembled, the spherical member 200 is firstly placed in the arc groove 111 of the lower connecting seat 110, then the upper connecting seat 120 is assembled on the lower connecting seat 110, and meanwhile, the connecting rod 400 upwards passes through the opening of the spherical cavity 101, the inner peripheral wall of the arc channel 121 can be in contact with the outer surface of the spherical member 200, and the spherical member 200 can universally rotate in the spherical cavity 101.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A spherical pan-tilt structure, comprising:

mount pad (100), mount pad (100) are equipped with the ascending spherical chamber of opening (101), rotatable spherical chamber (101) are provided with spherical member (200) in, spherical member (200) are connected with the edge connecting rod (400) that the opening of spherical chamber (101) stretches out, the opening edge of spherical chamber (101) can prevent spherical member (200) deviate from in spherical chamber (101), be equipped with on mount pad (100) to support in push up piece (300) of spherical member (200), push up piece (300) can be followed the central line of the opening of spherical chamber (101) upwards jack-up spherical member (200), so that the opening edge of spherical chamber (101) can all contact in the surface of spherical member (200).

2. A spherical head structure according to claim 1, characterized in that:

the outer surface of the spherical surface piece (200) is a partial spherical surface, a concave cavity (210) is formed in the spherical surface piece (200), and the pushing piece (300) abuts against the inner wall of the concave cavity (210) so that the outer surface of the spherical surface piece (200) abuts against the opening edge of the spherical cavity (101).

3. A spherical head structure according to claim 2, characterized in that:

the spherical part (200) is a spherical shell in a spherical segment shape, and the pushing part (300) vertically and upwards pushes against the inner surface of the spherical shell so that the outer surface of the spherical shell is tightly matched with the opening edge of the spherical cavity (101).

4. A spherical head structure according to claim 3, characterized in that:

the connecting rod (400) is arranged on the outer surface of the spherical shell, and the length direction of the connecting rod (400) extends along the radial direction of the spherical shell.

5. A spherical head structure according to claim 4, characterized in that:

the spherical shell and the connecting rod (400) are of an integral aluminum structure.

6. A spherical head structure according to claim 3, characterized in that:

the pushing piece (300) comprises a threaded push rod (310) in threaded connection with the mounting base (100), the lower end of the threaded push rod (310) extends out of the mounting base (100), the lower end of the threaded push rod (310) is connected with a knob portion (320), and a convex portion (330) abutted against the inner surface of the spherical shell is arranged at the upper end of the threaded push rod (310).

7. A spherical head structure according to claim 6, characterized in that:

the convex portion (330) has a convex arc surface (331) opposite to the inner surface of the spherical housing, and the radius of curvature of the convex arc surface (331) is larger than the radius of curvature of the inner surface of the spherical housing.

8. A spherical head structure according to claim 1, characterized in that:

mounting seat (100) include down connecting seat (110) and locate last connecting seat (120) of connecting seat (110) down, down connecting seat (110) be equipped with surface assorted circular arc recess (111) of sphere piece (200), go up connecting seat (120) have the round with surface assorted circular arc passageway (121) of sphere piece (200), the opening of spherical chamber (101) is located go up connecting seat (120) and communicate circular arc passageway (121), circular arc passageway (121) with circular arc recess (111) are injectd jointly spherical chamber (101).