Quick dismounting mechanism for center shaft of photography tripod

Abstract

The utility model relates to a photography tripod middle shaft quick-release mechanism, which comprises a first shaft section and a second shaft section which are detachably connected, the first shaft section is provided with a rotary buckle groove, the second shaft section is provided with a locking shaft which can be inserted into the first shaft section, the end part of the locking shaft is provided with a rotary buckle block, and the rotary buckle block is connected with the first shaft section. The rotary buckling block and the rotary buckling groove are buckled in a rotary mode so that the first shaft section and the second shaft section can be locked, the second shaft section further comprises a locking piece, and the locking piece keeps the locking shaft at the position where the locking shaft and the first shaft section are locked in the locking state. According to the utility model, the first shaft section and the second shaft section are firmly locked by the locking piece in a locking state while quick disassembly and assembly can be realized, so that the stability and the reliability of connection can be ensured.

Description

Technical Field

[0001] The utility model relates to the field of tripods, in particular to a central axis quick-release mechanism of a photographic tripod. Background Art

[0002] A photographic scaffold, also known as a tripod, is a support frame used to stabilize the camera. It plays an important role in photography and videography, and can help photographers achieve the desired photographic effects.

[0003] In order to meet different shooting needs and changes in perspective, it is usually necessary to adjust the height of the photography tripod. Photographers can adjust the height of the tripod according to the shooting subject and composition requirements, and then adjust the angle and height of the camera to obtain a more satisfactory shooting effect. For example, when shooting landscapes or buildings, you may need to place the camera in a lower position to obtain a wider perspective; when shooting portraits or macro photography, you may need to place the camera in a higher position to obtain a better composition and perspective. Therefore, height adjustment is very important for photographers. It can help photographers better grasp the initiative of shooting and obtain better shooting effects.

[0004] Therefore, the center axis of a photographic tripod can usually be raised and lowered when the tripod is fully opened. There are many ways to raise and lower the center axis, and one of them is to set the center axis into multiple sections that can be retracted and stored. However, in some cases, even if all the multiple sections of the center axis are retracted and stored to the minimum position, it still cannot meet the needs of low-position shooting. In this case, one or more sections of the center axis need to be removed. However, the disassembly and installation of the multi-section center axis in the prior art usually cannot be achieved quickly, and tools are needed for disassembly and installation, which is inconvenient to operate and affects the user experience.

[0005] In view of this, it is necessary to propose a new technical solution to overcome the shortcomings of the existing technology. Utility Model Content

[0006] The utility model aims to provide a central axis quick-release mechanism for a photographic tripod, which can facilitate the disassembly and assembly of the central axis without affecting the stability of the central axis connection.

[0007] The technical solution to achieve the purpose of this utility model is as follows:

[0008] A quick-release mechanism for the center axis of a photographic tripod comprises a first shaft section and a second shaft section which are detachably connected, wherein the first shaft section has a screw-lock groove, the second shaft section has a locking shaft which can be inserted into the first shaft section, the end of the locking shaft has a screw-lock block, the screw-lock block is rotatably engaged with the screw-lock groove to lock the first shaft section and the second shaft section, wherein the second shaft section also comprises a locking member, which in a locked state keeps the locking shaft in a position locked with the first shaft section.

[0009] Furthermore, the first shaft section includes a first outer tube and a first lining member fixed in the first outer tube, wherein the screw-in groove is provided on the first lining member.

[0010] Furthermore, the bottom surface of the screw buckle groove is an inclined surface which gradually rises from bottom to top in the rotation locking direction.

[0011] Furthermore, the spin buckle block is a cylindrical protrusion arranged at the end of the locking shaft.

[0012] Furthermore, there are two screw-in grooves and two screw-in blocks, and both are centrally symmetrically arranged.

[0013] Furthermore, the second shaft section includes a second outer tube and a second lining member fixed in the second outer tube, and the locking shaft passes through the second lining member.

[0014] Further, the locking shaft can be slidably installed in the second lining member along its axial direction.

[0015] Furthermore, a triangular boss is provided on the second lining member, and the lower end of the first lining member is configured as a triangular socket that is socketed with the triangular boss.

[0016] Furthermore, one end of the locking member is pivotally connected to an end of the locking shaft away from the spindle block.

[0017] Further, the first shaft segment and the second shaft segment are prismatic, wherein when the first shaft segment and the second shaft segment are not locked, the prismatic side surfaces of the first shaft segment and the second shaft segment are offset, and when the first shaft segment and the second shaft segment are locked, the prismatic side surfaces of the first shaft segment and the second shaft segment are aligned.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] The utility model provides a quick-release mechanism for the central axis of a photographic tripod, wherein the first axis section has a screw-lock groove, the second axis section has a locking shaft that can be inserted into the first axis section, the end of the locking shaft has a screw-lock block, the screw-lock block is rotatably engaged with the screw-lock groove to lock the first axis section and the second axis section, wherein the second axis section also includes a locking member, and the locking member keeps the locking shaft in a position locked with the first axis section in a locked state. It can realize quick disassembly and installation, and because in the locked state, the first axis section and the second axis section are firmly locked by the locking member, the stability and reliability of the connection can be ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1This is a diagram showing the assembly state of the central shaft quick-release mechanism of the utility model.

[0021] Figure 2 This is a disassembly state diagram of the central shaft quick-release mechanism of the utility model.

[0022] Figure 3 It is a three-dimensional exploded view of the central shaft quick-release mechanism of the utility model.

[0023] Figure 4 It is a schematic diagram of the central shaft quick release mechanism of the utility model before being locked.

[0024] Figure 5 It is a cross-sectional view of the central shaft quick-release mechanism of the utility model before being locked.

[0025] Figure 6 It is a schematic diagram of the central shaft quick release mechanism of the utility model after being locked.

[0026] Figure 7 It is a cross-sectional view of the central shaft quick-release mechanism of the utility model after being locked.

[0027] In the figure, 1-first shaft section; 11-first outer tube; 12-first inner lining member; 121-screw groove; 2-second shaft section; 21-second outer tube; 22-second inner lining member; 221-triangular boss; 231-locking shaft; 2311-screw block; 232-locking member; 233-spindle pin. DETAILED DESCRIPTION

[0028] The present invention is described in detail below in conjunction with the various embodiments shown in the accompanying drawings, but it should be noted that these embodiments are not limitations of the present invention, and any equivalent transformations or substitutions in functions, methods, or structures made by ordinary technicians in the field based on these embodiments are all within the scope of protection of the present invention.

[0029] In the description of this embodiment, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the 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 invention.

[0030] In addition, the terms "first", "second", "third", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0031] 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 an indirect connection 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 invention can be understood according to specific circumstances.

[0032] See also Figures 1 to 7 As shown, the utility model provides a quick-release mechanism for the central axis of a photographic tripod. In one embodiment, the quick-release mechanism for the central axis of a photographic tripod comprises a first shaft section 1 and a second shaft section 2 that are detachably connected. The first shaft section 1 has a screw-in groove 121, and the second shaft section 2 has a locking shaft 231 that can be inserted into the first shaft section 1. The end of the locking shaft 231 has a screw-in block 2311, and the screw-in block 2311 is rotatably engaged with the screw-in groove 121 to lock the first shaft section 1 and the second shaft section 2, wherein the second shaft section 2 also includes a locking member 232, and the locking member 232 keeps the locking shaft 231 in a locked position with the first shaft section 1 in a locked state. The above-mentioned locking member can be a wrench or a knob; a wrench is used for square tubes, and a knob can be used for round tubes.

[0033] The quick-release mechanism of the central axis of the photographic tripod provided by the utility model can realize quick disassembly and installation, and because in the locked state, the first shaft section 1 and the second shaft section 2 are firmly locked by the locking member 232, the stability and reliability of the connection can be ensured. In this embodiment, the locking member can be a locking wrench or a locking knob. For example, when used in a block structure, a locking wrench is better, while when used in a tubular structure, a locking knob is preferred.

[0034] See also Figure 3 , Figure 5 and Figure 7 As shown, the first shaft section 1 includes a first outer tube 11 and a first lining member 12 fixed in the first outer tube 11, wherein the screw-in groove 121 is provided on the first lining member 12. The first outer tube 11 is a metal member, and the first lining member 12 is a plastic member. The metal member has high strength and is not easily damaged. The plastic member is easy to form structures such as the screw-in groove 121, so as to cooperate with the locking shaft 231.

[0035] In this embodiment, the screw-in groove 121 is arranged on the top surface of the first lining member 12. The bottom surface of the screw-in groove 121 is an inclined surface that gradually rises from bottom to top in the rotation locking direction, so that the first shaft section 1 and the second shaft section 2 can be pulled together and pressed against each other during the locking process of the locking shaft 231 and the first lining member 12, thereby ensuring the reliability and stability of the connection. The number of screw-in grooves 121 is two, and the two screw-in grooves 121 are arranged symmetrically with respect to the center.

[0036] Please continue reading Figure 3 , Figure 5 and Figure 7 As shown, the second shaft section 2 includes a second outer tube 21 and a second lining member 22 fixed in the second outer tube 21, and the locking shaft 231 is inserted into the second lining member 22. The second outer tube 21 is a metal part, and the second lining member 22 is a plastic part. The metal part has high strength and is not easy to be damaged. The plastic part is easy to form a hole or other structure for the locking shaft 231 to pass through, and can reduce the wear on the locking shaft 231. The locking shaft 231 can be installed in the second lining member 22 slidably along its axial direction. The locking shaft 231 is provided with a screw block 2311 at one end facing the first shaft section 1. In this embodiment, the screw block 2311 is a cylindrical protrusion arranged at the end of the locking shaft 231. There are two screw blocks 2311 and they are arranged symmetrically. One end of the locking member 232 is pivotally connected to the end of the locking shaft 231 away from the screw block 2311 through a rotating shaft pin 233. The extension direction of the rotating shaft pin 233 is the radial direction of the locking shaft 231 . The end of the locking member 232 connected to the rotating shaft pin 233 is provided with a convex portion. The locking member 232 can rotate around the rotating shaft pin 233 to switch between the locked and unlocked states.

[0037] Furthermore, a triangular boss 221 is provided on one end of the second lining member 22 facing the first shaft segment 1, and a triangular sleeve 221 is provided at the lower end of the first lining member 12. The triangular sleeve 221 is engaged with the triangular boss 221. The cooperation between the triangular sleeve 221 can prevent the first shaft segment 1 and the second shaft segment 2 from being released from the locking connection between the screw button block 2311 and the screw button groove 121 due to shaking or rotation caused by external force. When the locking member 232 is released from the locking state, the first shaft segment 1 can be released only when it is separated from the second shaft segment 2 along the axial direction of the shaft segment while rotating.

[0038] For further information, see Figure 4 and Figure 6As shown, the first shaft section 1 and the second shaft section 2 are prism-shaped, wherein, when the first shaft section 1 and the second shaft section 2 are not locked, the prism-shaped side surfaces of the first shaft section 1 and the second shaft section 2 are misaligned; when the first shaft section 1 and the second shaft section 2 are locked, the prism-shaped side surfaces of the first shaft section 1 and the second shaft section 2 are aligned. Such a setting can intuitively and conveniently know whether the first shaft section 1 and the second shaft section 2 are locked or not. In this embodiment, the first shaft section 1 and the second shaft section 2 are both triangular prism-shaped, and in other embodiments, they can also be other multi-faceted prisms.

[0039] When in use, the locking shaft 231 of the second shaft section 2 is inserted into the first shaft section 1, and rotated at a certain angle so that the screw-in block 2311 at the end of the locking shaft 231 climbs into the screw-in groove 121 on the first inner lining 12 of the first shaft section 1, which is gradually inclined. In this process, the first shaft section 1 is pulled downward to fit tightly with the second shaft section 2; after the screw-in is completed, the locking member 232 is tightened to achieve the locking of the upper and lower shaft sections. When the first shaft section 1 and the second shaft section 2 need to be removed, the locking member 232 is first released, and then the first shaft section 1 is rotated in the opposite direction so that the screw-in block 2311 at the end of the locking shaft 231 is rotated out of the screw-in groove 121 on the first inner lining 12 of the first shaft section 1, and the first shaft section 1 can be pulled off and separated from the second shaft section 2 while rotating.

[0040] Through the above description of the specific embodiment, it can be known that the central axis quick release mechanism of the photographic tripod provided by the utility model has a first axis section 1 with a screw-lock groove 121, a second axis section 2 with a locking shaft 231 that can be inserted into the first axis section 1, and a screw-lock block 2311 at the end of the locking shaft 231, and the screw-lock block 2311 is rotatably engaged with the screw-lock groove 121 to lock the first axis section 1 and the second axis section 2, wherein the second axis section 2 also includes a locking member 232, and the locking member 232 keeps the locking shaft 231 in a locked position with the first axis section 1. It can realize quick disassembly and installation, and because in the locked state, the first axis section 1 and the second axis section 2 are firmly locked by the locking member 232, the stability and reliability of the connection can be guaranteed.

[0041] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the utility model. They are not intended to limit the protection scope of the utility model. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the utility model should be included in the protection scope of the utility model.

[0042] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0043] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A quick-release mechanism for a central axis of a photographic tripod, comprising a first axis section and a second axis section that are detachably connected, characterized in that: The first shaft segment has a screw-in groove, the second shaft segment has a locking shaft that can be inserted into the first shaft segment, and the end of the locking shaft has a screw-in block, and the screw-in block is rotationally engaged with the screw-in groove to lock the first shaft segment and the second shaft segment, wherein the second shaft segment also includes a locking member, and the locking member keeps the locking shaft in a locked position with the first shaft segment in a locked state.

2. The quick-release mechanism for the central axis of a photographic tripod as claimed in claim 1, characterized in that: The first shaft section includes a first outer tube and a first lining member fixed in the first outer tube, wherein the screw-in groove is provided on the first lining member.

3. The quick-release mechanism for the central axis of a photographic tripod as claimed in claim 2, characterized in that: The bottom surface of the rotary buckle groove is an inclined surface which gradually rises from bottom to top in the rotation locking direction.

4. The quick-release mechanism for the central axis of a photographic tripod as claimed in claim 3, characterized in that: The spin buckle block is a cylindrical protrusion arranged at the end of the locking shaft.

5. The quick-release mechanism for the central axis of a photographic tripod as claimed in claim 3 or 4, characterized in that: There are two screw button grooves and two screw button blocks respectively, and both are centrally symmetrically arranged.

6. The quick-release mechanism for the central axis of a photographic tripod as claimed in claim 2, characterized in that: The second shaft section includes a second outer tube and a second lining member fixed in the second outer tube, and the locking shaft passes through the second lining member.

7. The quick-release mechanism for the central axis of a photographic tripod as claimed in claim 6, characterized in that: The locking shaft is installed in the second lining member so as to be slidable along the axial direction thereof.

8. The quick-release mechanism for the central axis of a photographic tripod as claimed in claim 6, characterized in that: The second lining member is provided with a triangular boss, and the lower end of the first lining member is configured as a triangular sleeve that is sleeved with the triangular boss.

9. The quick-release mechanism for the central axis of a photographic tripod as claimed in claim 1, characterized in that: One end of the locking member is pivotally connected to an end of the locking shaft away from the spindle block.

10. The quick-release mechanism for the central axis of a photographic tripod as claimed in claim 1, characterized in that: The first shaft segment and the second shaft segment are prismatic, wherein when the first shaft segment and the second shaft segment are not locked, the prismatic side surfaces of the first shaft segment and the second shaft segment are offset, and when the first shaft segment and the second shaft segment are locked, the prismatic side surfaces of the first shaft segment and the second shaft segment are aligned.

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