A spherical pan-tilt structure

Abstract

The present invention discloses a spherical pan-tilt structure, including: a mounting seat, the mounting seat is provided with a spherical cavity opening upward, a spherical part is rotatably arranged in the spherical cavity, the opening edge of the spherical cavity can prevent the spherical part from escaping from the spherical cavity, and the mounting seat is provided with a push piece that presses against the spherical part, and the push piece can push up the spherical part along the center line of the opening of the spherical cavity, so that the opening edge of the spherical cavity can fully contact the surface of the spherical part. The above spherical pan-tilt structure pushes the spherical part upward along the center line of the opening of the spherical cavity by the push piece, so that the opening edge of the spherical cavity can fully contact the outer surface of the spherical part, the pressing force between the outer surface of the spherical part and each position of the opening edge of the spherical cavity is relatively uniform, and a circle of tightly contacted friction area can be formed between the outer surface of the spherical part and the opening edge of the spherical cavity, which is conducive to improving the locking force on the spherical part and can be suitable for applications with large loads.

Description

Technical Field

[0001] The invention relates to a spherical pan head structure. Background Art

[0002] In photography or projection work, a pan head is often used to install external devices such as cameras or projectors. In order to adjust the direction of shooting or projection, a spherical pan head is generally set up to adjust the angle position.

[0003] See also Figure 4 The conventional spherical head comprises a mounting seat 100, wherein a spherical cavity opening upward is provided in the mounting seat 100, a ball head 600 rotatable at multiple angles is provided in the spherical cavity, a connecting rod 400 extending along the opening of the spherical cavity is connected to the ball head 600, a threaded push rod 310 is provided on the side of the mounting seat 100, an end of the threaded push rod 310 extends into the spherical cavity, and an inclined surface push block 500 is provided in the spherical cavity between the end of the threaded push rod 310 and the ball head 600. When the threaded push rod 310 pushes the inclined surface push block 500 toward the inside of the spherical cavity, the inclined surface push block 500 can tilt and lift the ball head 600 upward, so that a part of the surface of the ball head 600 contacts the opening edge of the spherical cavity 101.

[0004] The direction of the force exerted by the above-mentioned inclined push block 500 on the ball head 600 is inclined upward, and the abutment force between the surface of the ball head 600 and different positions of the opening edge of the spherical cavity is different, resulting in uneven friction force acting on the surface of the ball head 600 by the opening edge of the spherical cavity. When the load connected by the connecting rod 400 is large, the ball head is prone to deflection. Summary of the invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a spherical pan / tilt structure with a large locking force and suitable for heavy loads.

[0006] A spherical pan-tilt structure according to an embodiment of the present invention includes: a mounting seat, the mounting seat is provided with a spherical cavity opening upward, a spherical part is rotatably arranged in the spherical cavity, the opening edge of the spherical cavity can prevent the spherical part from escaping from the spherical cavity, and the mounting seat is provided with a pushing part that presses against the spherical part, and the pushing part can push the spherical part upward along the center line of the opening of the spherical cavity so that the opening edge of the spherical cavity can fully contact the surface of the spherical part.

[0007] A spherical pan / tilt structure according to an embodiment of the present invention has at least the following beneficial effects:

[0008] The above spherical pan-tilt structure has a pushing piece that pushes the spherical piece upward along the center line of the opening of the spherical cavity, so that the opening edge of the spherical cavity can all contact the outer surface of the spherical piece. The pressing force between the outer surface of the spherical piece and each position of the opening edge of the spherical cavity is relatively uniform. A circle of tightly contacted friction area can be formed between the outer surface of the spherical piece and the opening edge of the spherical cavity, so that the opening edge of the spherical cavity is in a state of hugging the spherical piece, which is beneficial to improve the locking force of the spherical piece. The spherical pan-tilt structure can be suitable for applications with large loads to ensure the stability of projection or photography work.

[0009] In some embodiments of the present invention, the outer surface of the spherical component is a partial spherical surface, a concave cavity is provided inside the spherical component, and the pushing component abuts against the inner wall of the concave cavity so that the outer surface of the spherical component presses against the opening edge of the spherical cavity.

[0010] In some embodiments of the present invention, the spherical member is a spherical shell in the shape of a spherical segment, and the pushing member vertically presses against the inner surface of the spherical shell to make the outer surface of the spherical shell fit tightly with the opening edge of the spherical cavity.

[0011] In some embodiments of the present invention, the connecting rod is disposed on the outer surface of the spherical shell, and the length direction of the connecting rod extends along the radial direction of the spherical shell.

[0012] In some embodiments of the present invention, the spherical shell and the connecting rod are an integral aluminum structure.

[0013] In some embodiments of the present invention, the push member includes a threaded push rod threadedly connected to the mounting seat, the lower end of the threaded push rod extends out of the mounting seat, the lower end of the threaded push rod is connected to a knob portion, and the upper end of the threaded push rod has a convex portion that abuts against the inner surface of the spherical shell.

[0014] 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 the curvature radius of the convex arc surface is greater than the curvature radius of the inner surface of the spherical shell.

[0015] In some embodiments of the present invention, the mounting seat includes a lower connecting seat and an upper connecting seat arranged on the lower connecting seat, the lower connecting seat is provided with an arc groove matching the outer surface of the spherical member, the upper connecting seat has a circle of arc channels matching the outer surface of the spherical member, the opening of the spherical cavity is provided on the upper connecting seat and connected to the arc channel, and the arc channel and the arc groove jointly define the spherical cavity.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 A schematic diagram of the internal structure of a spherical pan-tilt structure of an embodiment of the present invention;

[0019] Figure 2 for Figure 1 A schematic diagram of the spherical member and the connecting rod of the embodiment after being rotated to a certain angle;

[0020] Figure 3 for Figure 2 A schematic diagram of the structural decomposition of an embodiment;

[0021] Figure 4 It is a schematic diagram of a spherical pan-tilt structure in the prior art. DETAILED DESCRIPTION

[0022] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0023] In the description of the present invention, it should be understood that descriptions involving orientation, such as the orientations or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside” and “outside” are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0024] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] See also Figures 1 to 3 A spherical pan-tilt structure according to an embodiment of the present invention comprises: a mounting seat 100, wherein the mounting seat 100 is provided with a spherical cavity 101 opening upward, a spherical member 200 is rotatably arranged in the spherical cavity 101, the opening edge of the spherical cavity 101 can prevent the spherical member 200 from escaping from the spherical cavity 101, and a pushing member 300 is provided on the mounting seat 100 to abut against the spherical member 200, and the pushing member 300 can push the spherical member 200 upward along the center line of the opening of the spherical cavity 101 so that the opening edge of the spherical cavity 101 can completely contact the surface of the spherical member 200.

[0027] The above spherical gimbal structure has the pushing piece 300 pushing the spherical piece 200 upward along the center line of the opening of the spherical cavity 101, so that the opening edge of the spherical cavity 101 can all contact the outer surface of the spherical piece 200, and the gap between the outer surface of the spherical piece 200 and each position of the opening edge of the spherical cavity 101 is more uniform, and the clamping force is more even. A circle of tightly contacted friction area can be formed between the outer surface of the spherical piece 200 and the opening edge of the spherical cavity 101, so that the opening edge of the spherical cavity 101 is in a state of hugging the spherical piece 200, which is beneficial to improve the locking force of the spherical piece 200. The spherical gimbal structure can be suitable for applications with large loads to ensure the stability of projection or photography work.

[0028] See also Figure 1 and Figure 2 In some embodiments of the present invention, the outer surface of the spherical member 200 is a partial spherical surface, a concave cavity 210 is provided inside the spherical member 200, and the push member 300 abuts against the inner wall of the concave cavity 210 so that the outer surface of the spherical member 200 is pressed against the opening edge of the spherical cavity 101. It can be understood that, compared with the conventional method of using an inclined push block to act on the outer surface of the ball head, the position where the push member 300 acts on the inner wall of the concave cavity 210 is shorter than the opening edge of the spherical cavity 101, which is conducive to transmitting the upward thrust to between the outer surface of the spherical member 200 and the opening edge of the spherical cavity 101.

[0029] See also Figure 1 and Figure 2In some embodiments of the present invention, the spherical member 200 is a spherical shell in the shape of a spherical segment, and the push member 300 is vertically pressed upward 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. It should be noted that the inner surface and the outer surface of the spherical shell are concentrically arranged spheres. Regardless of the angular position to which the spherical shell is rotated, the push member 300 only needs to move the same distance upward to press the spherical shell against the opening edge of the spherical cavity 101, and the material cost can also be reduced. In addition, it can be understood that the outer surface of the spherical shell can produce a slight deformation when it presses 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.

[0030] See also Figure 1 In some embodiments of the present invention, 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, so that the connecting rod 400 can swing in different directions at the same angle under the limiting action of the opening of the spherical cavity 101, so as to widen the angle adjustment range of the connecting rod 400 as much as possible.

[0031] See also Figure 1 In some embodiments of the present invention, in order to simplify the production and assembly process and improve the connection strength between the connecting rod 400 and the spherical shell, the spherical shell and the connecting rod 400 are an integrated aluminum structure.

[0032] See also Figure 1 and Figure 2 In some embodiments of the present invention, the push member 300 includes a threaded push rod 310 threadedly connected to the mounting seat 100, the lower end of the threaded push rod 310 extends out of the mounting seat 100, the lower end of the threaded push rod 310 is connected to a knob portion 320, and the upper end of the threaded push rod 310 has a convex portion 330 that abuts against the inner surface of the spherical shell. It should be noted that when the knob portion 320 is used to turn, the threaded push rod 310 moves in an up-and-down direction, and the convex portion 330 presses against the inner surface of the spherical shell upward or moves away from the inner surface of the spherical shell downward.

[0033] See also Figure 1 and Figure 3In some embodiments of the present invention, in order to obtain a better tightening effect, the convex portion 330 has a convex arc surface 331 opposite to the inner surface of the spherical shell, and the curvature radius of the convex arc surface 331 is greater than the curvature radius of the inner surface of the spherical shell. It can be understood that since the curvature radius of the convex arc surface 331 is greater than the curvature radius of the inner surface of the spherical shell, point-to-point contact is formed between the convex arc surface 331 and the inner surface of the spherical shell. When the convex arc surface 331 is worn, the convex arc surface 331 can still form a single-point contact or multi-point contact with the inner surface of the spherical shell. In some other embodiments, the convex portion 330 has a plane facing the inner surface of the spherical shell, which can form multi-point contact with the spherical shell.

[0034] See also Figure 3 In some embodiments of the present invention, the mounting seat 100 includes a lower connecting seat 110 and an upper connecting seat 120 arranged on the lower connecting seat 110, the lower connecting seat 110 is provided with an arc groove 111 matching the outer surface of the spherical member 200, the upper connecting seat 120 has a circle of arc channels 121 matching the outer surface of the spherical member 200, the opening of the spherical cavity 101 is provided on the upper connecting seat 120 and connected to the arc channel 121, and the arc channel 121 and the arc groove 111 jointly define the spherical cavity 101. When assembling the spherical component 200, first place the spherical component 200 into the arc groove 111 of the lower connecting seat 110, and then assemble the upper connecting seat 120 on the lower connecting seat 110, and at the same time let the connecting rod 400 pass upward through the opening of the spherical cavity 101, so that the inner wall of the arc channel 121 can contact the outer surface of the spherical component 200, and the spherical component 200 can rotate universally in the spherical cavity 101.

[0035] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0036] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A spherical pan-tilt structure, characterized in that: include: A mounting seat (100) is provided with a spherical cavity (101) opening upward, a spherical member (200) is rotatably arranged in the spherical cavity (101), the spherical member (200) is connected to a connecting rod (400) extending along the opening of the spherical cavity (101), the opening edge of the spherical cavity (101) can prevent the spherical member (200) from escaping from the spherical cavity (101), and a pushing member (300) is provided on the mounting seat (100) to abut against the spherical member (200), the pushing member (300) can push the spherical member (200) upward along the center line of the opening of the spherical cavity (101), so that the opening edge of the spherical cavity (101) can completely contact the surface of the spherical member (200).

2. A spherical pan / tilt structure according to claim 1, characterized in that: The outer surface of the spherical member (200) is a partial spherical surface, a concave cavity (210) is provided inside the spherical member (200), and the pushing member (300) abuts against the inner wall of the concave cavity (210) so that the outer surface of the spherical member (200) is pressed against the opening edge of the spherical cavity (101).

3. A spherical pan / tilt structure according to claim 2, characterized in that: The spherical member (200) is a spherical shell in the shape of a spherical segment, and the pushing member (300) vertically presses 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 pan / tilt 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 pan / tilt structure according to claim 4, characterized in that: The spherical shell and the connecting rod (400) are an integral aluminum structure.

6. The spherical pan-tilt structure according to claim 3, characterized in that: The push member (300) comprises a threaded push rod (310) threadedly connected to the mounting seat (100), the lower end of the threaded push rod (310) protruding out of the mounting seat (100), the lower end of the threaded push rod (310) is connected to a knob portion (320), and the upper end of the threaded push rod (310) has a convex portion (330) abutting against the inner surface of the spherical shell.

7. A spherical pan / tilt 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 shell, and the curvature radius of the convex arc surface (331) is greater than the curvature radius of the inner surface of the spherical shell.

8. The spherical pan / tilt structure according to claim 1, characterized in that: The mounting seat (100) comprises a lower connecting seat (110) and an upper connecting seat (120) arranged on the lower connecting seat (110); the lower connecting seat (110) is provided with an arc groove (111) matching the outer surface of the spherical member (200); the upper connecting seat (120) has a circle of arc channels (121) matching the outer surface of the spherical member (200); the opening of the spherical cavity (101) is arranged on the upper connecting seat (120) and is connected to the arc channel (121); the arc channel (121) and the arc groove (111) jointly define the spherical cavity (101).

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