Deflectable center-column structure, and tripod

Abstract

Disclosed is a deflectable center-column structure, comprising a mounting base (1), a bowl-shaped member (2), a center column (3), and a driving pipe-fitting (4), wherein an accommodating groove (12) is recessed on an upper end portion of the mounting base (1); a first through hole (11) is provided in a bottom groove wall of the accommodating groove (12) in a penetrating manner; a lower end portion of the bowl-shaped member (2) is fixedly connected to a central pipe portion (21), and the central pipe portion (21) passes through the first through hole (11), such that the bowl-shaped member (2) is rotatably accommodated in the accommodating groove (12); a second through hole (22) is provided in the bowl-shaped member (2) in a penetrating manner, and the second through hole (22) passes through the central pipe portion (21); the center column (3) passes through the second through hole (22); and the driving pipe-fitting (4) is configured to drive the central pipe portion (21) to move vertically. When the driving pipe-fitting (4) drives the central pipe portion (21) to move axially downwards by means of a thread, an upper end portion of the driving pipe-fitting (4) releases a lower end portion of the mounting base (1), such that the bowl-shaped member (2) selectively rotates in the accommodating groove (12) so as to drive the center column (3) to deflect, thereby achieving the adjustment of a photographing space angle of a device, such as a camera; and the deflectable center-column structure having a simple structure, and being easy to operate. Further disclosed is a tripod.

Description

A deflectable central axis structure and tripod Technical Field

[0001] The invention relates to the technical field of photographic equipment, and in particular to a deflectable central axis structure and a tripod. Background Art

[0002] A tripod is a commonly used support structure with three legs that provide a stable and reliable platform for other equipment. While a common application is as a stand for devices such as cameras, tripods have many potential applications. For example, tripods can also be used to support laser sights for surveying, cameras for photography, and telescopes for sky observation.

[0003] In order to assist in shooting and achieve a good shooting effect, the legs of the tripod have a telescopic function to adjust the shooting height of the camera. However, in the prior art, the leg adjustment structure of the tripod is relatively complicated, occupies a relatively large space, and is still very inconvenient to carry. Therefore, the tripod is now equipped with a central axis, which is extended and retracted up and down to adjust the shooting height of the camera and other equipment. However, the central axis can only be extended and retracted up and down and cannot be offset at an angle, which is inconvenient for shooting in a limited space. Therefore, a tripod with an offset-adjustable central axis is urgently needed.

[0004] Summary of the Invention

[0005] The main purpose of the invention is to propose a deflectable central axis structure to solve the technical problem of inconvenient shooting in a limited space.

[0006] To achieve the above-mentioned purpose, the invention proposes a deflectable central axis structure, comprising a mounting seat, an upper end portion of the mounting seat having a recessed receiving groove, and a bottom groove wall of the receiving groove having a first through hole extending therethrough;

[0007] a bowl-shaped member, wherein a middle tube portion is fixedly connected to the lower end of the bowl-shaped member, the middle tube portion passes through the first through hole, so that the bowl-shaped member is rotatably accommodated in the accommodating groove, and the bowl-shaped member is penetrated by a second through hole, and the second through hole passes through the middle tube portion;

[0008] a central shaft, the central shaft passing through the second through hole; and

[0009] A driving pipe, the driving pipe is located below the bowl-shaped member and is drivingly connected to the middle pipe portion to lock the bowl-shaped member in the receiving groove;

[0010] When the driving tube is actuated to drive the middle tube portion, the upper end of the driving tube and the bowl-shaped part approach each other, so that the upper end of the driving tube supports the lower end of the mounting seat, and the bowl-shaped part is fixed in the receiving groove, or the upper end of the driving tube and the bowl-shaped part move away from each other, so that the upper end of the driving tube releases the lower end of the mounting seat, and the bowl-shaped part can rotate in the receiving groove.

[0011] In some embodiments, the driving tube and the middle tube portion are driven by threads, the driving tube is penetrated by a third through hole, the inner wall of the third through hole is provided with a first internal thread, and the outer wall of the middle tube portion is provided with the first external thread matching the first internal thread provided on the inner wall of the third through hole.

[0012] In some embodiments, the lower end of the mounting seat has a bowl-shaped portion, the outer side wall of the bowl-shaped portion is an arc-shaped surface, the upper opening of the third through hole is an expanded opening, and the bowl-shaped portion selectively rotates at the upper opening of the third through hole.

[0013] In some embodiments, the upper opening of the third through hole is a bowl-shaped opening that matches the bowl-shaped portion.

[0014] In some embodiments, the inner groove wall of the accommodating groove is recessed with a plurality of weight-reducing grooves or weight-reducing holes arranged at intervals.

[0015] In some embodiments, the bowl-shaped member is recessed with a plurality of hollow grooves.

[0016] In some embodiments, the deflectable central axis structure further includes a locking assembly for locking the central axis. The locking assembly is mounted on the lower end of the central tube portion and sleeved on the central axis.

[0017] In some embodiments, the locking assembly includes a drive sleeve and a clamping member connected to the lower end of the drive sleeve, and the drive sleeve is rotatably connected to the lower end of the middle tube portion. When the drive sleeve rotates, it drives the clamping member upward, so that the clamping member is clamped between the middle tube portion and the central axis, and the clamping member releases the central axis, or the clamping member moves downward, so that the clamping member releases the central axis.

[0018] In some embodiments, the second internal thread of the drive sleeve is matched with the second external thread of the lower end of the middle tube portion, and the clamping member is located inside the drive sleeve and between the inner wall of the second through hole and the outer wall of the middle shaft; and / or

[0019] The outer peripheral side wall of the clamping piece is an inclined surface, and the outer diameter of the clamping piece gradually decreases near the upper end portion.

[0020] The present invention further provides a tripod, comprising a mounting base and the above-mentioned deflectable central axis structure, wherein the mounting base has legs rotatably connected thereto.

[0021] Compared with the deflectable central axis structure of the related technology, in the deflectable central axis structure of the invention, when the driving tube is actuated to drive the central tube part, the driving tube moves upward along the axial direction of the central tube part, so that the upper end of the driving tube part and the bowl-shaped part approach each other, until the upper end of the driving tube part supports the lower end of the mounting seat, the bowl-shaped part is fixed in the accommodating groove, and the upper end of the driving tube part and the bowl-shaped part are locked on the inner and outer sides of the groove wall of the accommodating groove; or the driving tube part moves downward along the axial direction of the central tube part, so that the upper end of the driving tube part and the bowl-shaped part move away from each other, and at the same time, the upper end of the driving tube part releases the lower end of the mounting seat, and the bowl-shaped part selectively rotates in the accommodating groove to drive the central axis to deflect. After adjusting the deflection angle of the central axis, the driving tube part is actuated again to lock the bowl-shaped part, so that the central axis is fixed on the mounting seat, thereby realizing the shooting space angle adjustment of cameras and other equipment, with a simple structure and easy operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] FIG1 is a schematic diagram of a partial structure of a deflectable central axis structure according to an embodiment of the present invention;

[0023] FIG2 is a partial cross-sectional view of a deflectable central axis structure according to an embodiment of the present invention;

[0024] FIG3 is a partially exploded view of the deflectable central axis structure in FIG1 ;

[0025] FIG. 4 is another partial exploded view of the deflectable central shaft structure in FIG. 1 .

[0026] Explanation of the accompanying reference numerals: Mounting seat 1; first through hole 11; accommodating groove 12; weight-reducing groove 13; bowl-shaped portion 14; bowl-shaped member 2; middle tube portion 21; first external thread 211; second external thread 212; second through hole 22; hollow groove 23; middle shaft 3; driving pipe member 4; third through hole 41; locking member assembly 5; driving sleeve 51; clamping member 52. DETAILED DESCRIPTION

[0027] The following will provide a clear and complete description of the scheme in the embodiment of the invention in conjunction with the drawings in the embodiment of the invention. Obviously, the described embodiment is only a part of the embodiments in the invention, not all of the embodiments. Based on the embodiments in the invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the invention. It should be noted that the descriptions involving "first", "second", etc. in the invention are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features.

[0028] In response to the technical defects existing in the related art, as shown in Figures 1 to 4, the deflectable central axis structure provided in this embodiment includes:

[0029] A mounting base 1, wherein an accommodating groove 12 is formed in an upper end portion of the mounting base 1, and a first through hole 11 is formed through the bottom wall of the accommodating groove 12;

[0030] The bowl-shaped member 2 has a middle tube portion 21 fixedly connected to its lower end. The middle tube portion 21 passes through the first through hole 11 so that the bowl-shaped member 2 can be rotatably accommodated in the accommodation groove 12. The bowl-shaped member 2 has a second through hole 22 extending through the middle tube portion 21.

[0031] a central axis 3, the central axis 3 passing through the second through hole 22; and

[0032] The driving pipe 4 is located below the bowl-shaped member 2 and is drivingly connected to the middle pipe portion 21 to lock the bowl-shaped member 2 in the receiving groove 12;

[0033] In this embodiment, when the driving tube 4 is actuated to drive the middle tube part 21, the driving tube 4 moves axially upward along the middle tube part 21, so that the upper end of the driving tube 4 and the bowl-shaped part 2 approach each other, until the upper end of the driving tube 4 supports the lower end of the mounting seat 1, and the bowl-shaped part 2 is fixed in the accommodating groove 12, and the upper end of the driving tube 4 and the bowl-shaped part 2 are locked on the inner and outer sides of the groove wall of the accommodating groove 12; or the driving tube 4 moves axially downward along the middle tube part 21, so that the upper end of the driving tube 4 and the bowl-shaped part 2 move away from each other, and at the same time, the upper end of the driving tube 4 releases the lower end of the mounting seat 1, and the bowl-shaped part 2 selectively rotates in the accommodating groove 12 to drive the central axis 3 to deflect (rotate away from the vertical direction). After adjusting the deflection angle of the central axis, the driving tube 4 is actuated again to lock the bowl-shaped part 2, so that the central axis 3 is fixed on the mounting seat 1, thereby realizing the shooting space angle adjustment of equipment such as cameras, with a simple structure and easy operation.

[0034] In this embodiment, the drive tube 4 is threadedly driven with the middle tube portion 21. The drive tube 4 is provided with a third through hole 41, the inner wall of the third through hole 41 being provided with a first internal thread. The outer wall of the middle tube portion 21 is provided with a first external thread 211 that matches the first internal thread provided on the inner wall of the third through hole 41. This structure is simple and easy to operate. When the drive tube 4 is rotated in a first direction, the drive tube 4 moves axially upward along the middle tube portion 21. When the drive tube 4 is rotated in a second direction, the drive tube 4 moves axially downward along the middle tube portion 21. The first direction is opposite to the second direction and can be either clockwise or counterclockwise, without specific limitation.

[0035] Of course, the driving tube 4 and the middle tube part 21 can also be driven and connected by other driving structures. For example, a limiting component is provided on the middle tube part 21. After the driving tube 4 is pulled upward so that the upper end of the driving tube 4 supports the lower end of the mounting seat 1, the limiting component is exposed to the outside and expanded to be limited to the lower end of the driving tube 4, thereby limiting the driving tube 4. Then, by pressing or other actuating operations, the limiting component is contracted to release the limit on the lower end of the driving tube 4, thereby unlocking the bowl-shaped part 2, and the middle axis 3 can be offset and rotated. A spring can also be provided between the driving tube 4 and the middle tube part 21.

[0036] To facilitate the rotation of the bowl-shaped member 2 within the receiving groove 12, the lower end of the mounting base 1 has a bowl-shaped portion 14. The outer wall of the bowl-shaped portion 14 is curved. The upper opening of the third through hole 41 is flared, and the inner surface of the upper opening of the third through hole 41 is curved. The bowl-shaped member 2 selectively rotates within the upper opening of the third through hole 41. The upper opening of the third through hole 41 is a bowl-shaped opening that matches the outer wall of the bowl-shaped member 2. The diameter of the bowl-shaped opening is designed according to the actual use. The outer diameter of the drive tube 4 can be reduced in the area away from the upper opening of the third through hole 41.

[0037] In order to reduce the overall weight, the inner wall of the receiving groove 12 is provided with a plurality of spaced-apart weight-reducing grooves 13 or weight-reducing holes. The bowl-shaped member 2 is provided with a plurality of hollow grooves 23 .

[0038] In this embodiment, as shown in Figures 2 and 3, the deflectable central axis structure also includes a locking assembly 5 for locking the central axis 3. The locking assembly 5 is installed at the lower end of the middle tube portion 21 and is sleeved on the central axis 3. The height of the central axis 3 is adjusted by the locking assembly 5.

[0039] Furthermore, the locking assembly 5 includes a driving sleeve 51 and a clamping member 52 connected to the lower end of the driving sleeve 51. The driving sleeve 51 is rotatably connected to the lower end of the middle tube portion 21. When the driving sleeve 51 rotates, it drives the clamping member 52 upward, so that the clamping member 52 is clamped between the middle tube portion 21 and the middle axis 3, and the clamping member 52 releases the middle axis 3, or the clamping member 52 moves downward, so that the clamping member 52 releases the middle axis 3. The outer peripheral side wall of the clamping member 52 is a slope, and the outer diameter of the clamping member 52 gradually decreases near the upper end.

[0040] Furthermore, as shown in FIG4 , the second internal thread of the drive sleeve 51 is matched with the second external thread 212 of the lower end of the middle tube portion 21, and the clamping member 52 is located inside the drive sleeve 51 and between the inner wall of the second through hole 22 and the outer wall of the middle shaft 3; and / or

[0041] When the drive sleeve 51 is rotated to drive the clamping member 52 upward, the clamping member 52 gradually extends between the inner wall of the second through hole and the outer wall of the central axis 3, so that the clamping member 52 is clamped between the inner wall of the second through hole and the outer wall of the central axis 3, thereby locking the central axis 3 on the central tube portion 21. When the drive sleeve 51 is rotated to drive the clamping member 52 downward, the clamping member 52 gradually disengages from between the inner wall of the second through hole and the outer wall of the central axis 3, so that the clamping member 52 releases the central tube portion 21 and the central axis 3, thereby unlocking the central axis 3. The central axis 3 can move up and down within the second through hole 22. After adjusting to the desired position, the drive sleeve 51 is rotated in the opposite direction again to lock the central axis 3. The drive tube 4 and the drive sleeve 51 can both rotate clockwise or counterclockwise, without specific limitation. The vertical adjustment and offset adjustment of the central axis 3 can be adjusted simultaneously or separately.

[0042] To sum up, when the driving tube 4 rotates clockwise or counterclockwise, the thread drives the middle tube part 21 to move axially upward, and the middle tube part 21 drives the bowl-shaped part 2 and the central axis 3 to move upward together, so that the upper end of the driving tube 4 and the bowl-shaped part 2 are close to each other, and at the same time, the end of the opening on the third through hole 41 supports the bowl-shaped part 14, so that the bowl-shaped part 2 is fixedly limited in the accommodating groove 12, that is, the bowl-shaped part 2 and the mounting seat 1 cannot rotate relative to each other; when the driving tube 4 rotates in the opposite direction, the thread drives the middle tube part 21 to move axially downward, so that the upper end of the driving tube 4 and the bowl-shaped part 2 are away from each other, and at the same time, the end of the opening on the third through hole 41 releases the bowl-shaped part 14, so that the bowl-shaped part 2 can rotate in the accommodating groove 12 to drive the central axis 3 to deflect, and at the same time, the bowl-shaped part 14 rotates at the opening on the third through hole 41, thereby realizing the shooting space angle adjustment of equipment such as cameras, with a simple structure and easy operation.

[0043] The bowl-shaped member 2 and the middle tube 21 can be integrally formed or separately configured, for example, by being screwed, glued, welded, or clamped together using a locking member. The central axis, middle tube 21, and drive tube 4 are arranged from the inside out. The mounting base can also be provided with connection ports, such as threads or cold shoes. The outer circumferences of the drive tube 4 and the drive sleeve 51 can be provided with friction features, such as stripes, waves, or patterns.

[0044] The invention also proposes a tripod, which includes a mounting base 1 and three legs. The legs are rotatably connected to the mounting base 1, so that the tripod occupies a small volume when in the stored state. The tripod also includes the deflectable central axis structure as described above, which will not be described in detail.

[0045] The above description is only a partial or preferred embodiment of the invention. Neither the text nor the drawings can limit the scope of protection of the invention. Any equivalent structural transformation made by using the contents of the invention description and drawings under the overall concept of the invention, or direct / indirect application in other related technical fields, is included in the scope of protection of the invention.

Claims

1. A deflectable central axis structure, characterized in that: include: A mounting seat, wherein an accommodating groove is recessed at an upper end of the mounting seat, and a first through hole is penetrated through a bottom groove wall of the accommodating groove; A bowl-shaped member, wherein the lower end of the bowl-shaped member is fixedly connected to a middle tube portion, the middle tube portion passes through the first through hole, so that the bowl-shaped member is rotatably accommodated in the accommodation groove, and the bowl-shaped member is penetrated by a second through hole, and the second through hole passes through the middle tube portion; a central axis, wherein the central axis passes through the second through hole; as well as A driving pipe, the driving pipe is located below the bowl-shaped member and is drivingly connected to the middle pipe portion to lock the bowl-shaped member in the receiving groove; Wherein, when the driving tube is actuated to drive the middle tube part, the upper end of the driving tube and the bowl-shaped part are close to each other, so that the upper end of the driving tube supports the lower end of the mounting seat, and the bowl-shaped part is fixed in the receiving groove, or the upper end of the driving tube and the bowl-shaped part are away from each other, so that the upper end of the driving tube releases the lower end of the mounting seat, and the bowl-shaped part can rotate in the receiving groove.

2. The deflectable central axis structure according to claim 1, characterized in that: The driving tube and the middle tube part are driven by threads, the driving tube is penetrated by a third through hole, the inner wall of the third through hole is provided with a first internal thread, and the outer wall of the middle tube part is provided with a first external thread matching the first internal thread provided on the inner wall of the third through hole.

3. The deflectable central axis structure according to claim 2, characterized in that: The lower end of the mounting seat has a bowl-shaped portion, the outer side wall of the bowl-shaped portion is an arc-shaped surface, the upper opening of the third through hole is an expanded opening, and the bowl-shaped portion selectively rotates at the upper opening of the third through hole.

4. The deflectable central axis structure according to claim 3, characterized in that: The upper opening of the third through hole is a bowl-shaped opening matching the bowl-shaped portion.

5. The deflectable central axis structure according to claim 1, characterized in that: The inner groove wall of the accommodating groove is concavely provided with a plurality of weight-reducing grooves or weight-reducing holes arranged at intervals.

6. The deflectable central axis structure according to claim 1, characterized in that: The bowl-shaped piece is concavely provided with a plurality of hollow grooves.

7. The deflectable central axis structure according to any one of claims 1 to 6, characterized in that: The deflectable central axis structure also includes a locking assembly for locking the central axis. The locking assembly is mounted on the lower end of the central tube portion and sleeved on the central axis.

8. The deflectable central axis structure according to claim 7, characterized in that: The locking assembly includes a driving sleeve and a clamping member connected to the lower end of the driving sleeve, and the driving sleeve is rotatably connected to the lower end of the middle tube portion. When the driving sleeve rotates, the clamping member is driven upward, so that the clamping member is clamped between the middle tube portion and the middle axis, and the clamping member releases the middle axis, or the clamping member moves downward, so that the clamping member releases the middle axis.

9. The deflectable central axis structure according to claim 8, characterized in that: The second internal thread of the drive sleeve is matched and connected with the second external thread of the lower end of the middle tube portion, and the clamping member is located inside the drive sleeve and between the inner wall of the second through hole and the outer wall of the middle shaft; and / or The outer peripheral side wall of the clamping piece is an inclined surface, and the outer diameter of the clamping piece gradually decreases near the upper end portion.

10. A tripod, characterized in that: The utility model comprises a mounting seat and a deflectable central axis structure as claimed in any one of claims 1 to 9, wherein the mounting seat has legs rotatably connected thereto.

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