Quick locking mechanism for universal ball support

Abstract

A universal ball support quick locking mechanism comprises a guide positioning shaft (20), a rotary positioning sleeve (22) and a telescopic upright sleeve (21) which are sequentially arranged on a mandrel (23) in a sleeving mode from bottom to top, the guide positioning shaft (20) is fixedly connected to a tripod base (1), and a tight supporting spring (24) is arranged between the rotary positioning sleeve (22) and the guide positioning shaft (20). A pressing handle (28) for controlling the telescopic upright sleeve (21) to press downwards is arranged on the core shaft (23) positioned above the telescopic upright sleeve (21); the rotary positioning sleeve (22) is provided with a set of wedge-shaped sliding blocks (25), the guiding positioning shaft (20) is internally provided with a set of wedge-shaped positioning blocks (26) matched with the wedge-shaped sliding blocks (25), and the telescopic upright sleeve (21) is provided with a circle of corrugated guide grooves (27) matched with the wedge-shaped sliding blocks (25). The quick locking mechanism has the advantages that the quick locking mechanism can quickly lock or loosen the universal ball head hinge support through foot treading, the quick locking mechanism is convenient and quick, and the experience feeling of a user is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tripods, in particular to a universal ball bracket quick-locking mechanism. Background Art

[0002] The universal ball joint bracket is composed of a tripod base, a universal ball head and a universal ball head hinge support. The tripod base is used to connect three legs for support. The universal ball head is fixed to the tripod base through a core shaft. A spherical groove is provided at the bottom of the universal ball head hinge support for hinge connection to the universal ball head. A locking knob is provided on the universal ball head hinge support for fixing the tilt angle of the universal ball head hinge support. The top of the universal ball head hinge support is used to connect a pan / tilt or a telescopic column with a pan / tilt. Especially when used in conjunction with a telescopic column, it is extremely inconvenient for the user to control both the camera equipment on the top and the universal ball joint bracket on the bottom, which affects the user's experience. Utility Model Content

[0003] The purpose of the utility model is to provide a universal ball bracket quick lock mechanism to solve the above-mentioned deficiencies.

[0004] The utility model universal ball bracket comprises a tripod base and a universal ball head connected to both ends of a core shaft, and a universal ball head hinge support which can be rotated and locked on the universal ball head. The quick locking mechanism comprises a guide positioning shaft, a rotation positioning sleeve and a telescopic upright sleeve which are sequentially sleeved on the core shaft from bottom to top. The guide positioning shaft is fixedly connected to the tripod base, a tightening spring is arranged between the rotation positioning sleeve and the guide positioning shaft, a pressing handle for controlling the downward pressing of the telescopic upright sleeve is arranged on the core shaft located above the telescopic upright sleeve; a group of wedge-shaped sliding blocks are arranged on the rotation positioning sleeve, a group of wedge-shaped positioning blocks matched with the wedge-shaped sliding blocks are arranged in the guide positioning shaft, and a circle of corrugated guide grooves matched with the wedge-shaped sliding blocks are arranged on the telescopic upright sleeve.

[0005] The telescopic upright sleeve is integrally formed by a core shaft mounting part and a positioning shaft mounting part. The core shaft mounting part is provided with a core shaft mounting hole. The pressing handle is hinged on the core shaft through a pin shaft. The core shaft mounting part is provided with a pin shaft avoidance long hole. The positioning shaft mounting part is a double-layer cylindrical structure. The rotating positioning sleeve is located in the inner cylinder of the double-layer cylindrical structure, and the guide positioning shaft is located in the outer cylinder of the double-layer cylindrical structure.

[0006] A group of vertical guide blocks are arranged in a circular array on the outer side wall of the inner cylinder of the positioning shaft mounting part. A group of telescopic upright sleeve guide grooves cooperating with the vertical guide blocks and a rotating positioning sleeve positioning groove cooperating with the wedge-shaped slider are respectively arranged on the guide positioning shaft. The corrugated guide groove is located at the bottom of the inner cylinder of the positioning shaft mounting part.

[0007] A spherical groove matched with the universal ball head is arranged on the top of the core shaft installation part.

[0008] A plane bearing is arranged on the core shaft located in the rotating positioning sleeve, and the rotating positioning sleeve rotates on the core shaft through the plane bearing.

[0009] The utility model has the advantages that the quick-locking mechanism can quickly lock or release the universal ball joint support by stepping on the foot, which is convenient and quick, and greatly improves the user's experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the structure of the utility model.

[0011] Figure 2 It is a schematic diagram of the exploded structure of the quick lock mechanism.

[0012] Figure 3 It is a schematic diagram of the internal structure of the guide positioning shaft.

[0013] Figure 4 It is a schematic diagram of the internal structure of the telescopic upright sleeve. DETAILED DESCRIPTION

[0014] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0015] Therefore, the following detailed description of the embodiments of the utility model provided in the accompanying drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0016] In the description of the embodiments of the present utility model, it should be noted that if the terms "upper", "lower", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the utility model product is usually placed when in use. It is only for the convenience of describing the utility model and simplifying the description, and does 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 cannot be understood as a limitation on the present utility model. In addition, if the terms "first", "second", etc. appear in the description of the present utility model, they are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0017] In the description of the embodiments of the present utility model, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set" and "connection" 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 utility model can be understood according to specific circumstances.

[0018] As shown in the accompanying drawings, the utility model universal ball bracket includes a tripod base 1 and a universal ball head 2 connected to both ends of a core shaft 23, and a universal ball head hinge support 3 that can be rotated and locked on the universal ball head 2. The quick lock mechanism includes a guide positioning shaft 20, a rotation positioning sleeve 22 and a telescopic upright sleeve 21 that are sequentially sleeved on the core shaft 23 from bottom to top. The guide positioning shaft 20 is fixedly connected to the tripod base 1, and a tightening spring 24 is provided between the rotation positioning sleeve 22 and the guide positioning shaft 20. A pressure handle 28 for controlling the telescopic upright sleeve 21 to press down is provided on the core shaft 23 above the telescopic upright sleeve 21; a group of wedge-shaped sliders 25 are provided on the rotation positioning sleeve 22, a group of wedge-shaped positioning blocks 26 that cooperate with the wedge-shaped sliders 25 are provided in the guide positioning shaft 20, and a circle of corrugated guide grooves 27 that cooperate with the wedge-shaped sliders 25 are provided on the telescopic upright sleeve 21.

[0019] The top of the universal ball joint support 3 is used to connect the pan head or a telescopic column with a pan head, which can be applied to various shooting requirements. The universal ball bracket is used for shooting at multiple angles.

[0020] The quick lock mechanism is used to quickly fix the universal ball joint support 3. When multi-angle shooting is required, the quick lock mechanism is released and the universal ball joint support 3 can be tilted. Conversely, when fixed shooting is required, the quick lock mechanism locks the universal ball joint support 3.

[0021] The telescopic upright sleeve 21 is integrally formed by a core shaft mounting portion 33 and a positioning shaft mounting portion 34. The core shaft mounting portion 33 is provided with a core shaft 23 mounting hole. The pressing handle 28 is hinged on the core shaft 23 through a pin shaft. The core shaft mounting portion 33 is provided with a pin shaft avoidance long hole. The positioning shaft mounting portion 34 is a double-layer cylindrical structure. The rotating positioning sleeve 22 is located in the inner cylinder of the double-layer cylindrical structure, and the guide positioning shaft 20 is located in the outer cylinder of the double-layer cylindrical structure.

[0022] A group of vertical guide blocks 30 are arranged in a circular array on the outer wall of the inner cylinder of the positioning shaft mounting part 34, and a group of telescopic upright sleeve guide grooves 31 cooperating with the vertical guide blocks 30 and a rotating positioning sleeve positioning groove 32 cooperating with the wedge-shaped slider 25 are respectively provided on the guide positioning shaft 20, and the corrugated guide groove 27 is located at the bottom of the inner cylinder of the positioning shaft mounting part 34.

[0023] The cooperation between the vertical guide block 30 and the telescopic upright sleeve guide groove 31 can prevent the telescopic upright sleeve 21 from rotating and causing the corrugated guide groove 27 to be misaligned, and the telescopic upright sleeve 21 can only move up and down, and its movement is stable.

[0024] After the wedge-shaped sliding block 25 moves into the locating groove 32 of the rotatable locating sleeve, the rotatable locating sleeve 22 cannot rotate but can only move up and down, so that the rotatable locating sleeve 22 can be accurately rotated and positioned.

[0025] A spherical groove matching with the universal ball head 2 is provided on the top of the core shaft mounting portion 33 .

[0026] A plane bearing 35 is provided on the mandrel 23 located in the rotating positioning sleeve 22, and the rotating positioning sleeve 22 rotates on the mandrel 23 through the plane bearing 35. The plane bearing 35 makes the rotating positioning sleeve 22 rotate more smoothly and stably.

[0027] The guide positioning shaft 20, the telescopic upright sleeve 21 and the rotating positioning sleeve 22 are all cylindrical structures. The guide positioning shaft 20 is a fixed part, and the telescopic upright sleeve 21 and the rotating positioning sleeve 22 are both movable parts. By pressing the pressing handle 28, the telescopic upright sleeve 21 moves downward on the guide positioning shaft 20 with the rotating positioning sleeve 22. At the same time, the rotating positioning sleeve 22 can be rotated by the cooperation of the wedge-shaped slider 25, the wedge-shaped positioning block 26 and the corrugated guide groove 27.

[0028] In specific usage, when the quick lock mechanism is in the locked state, the wedge-shaped slider 25 is located between two adjacent wedge-shaped positioning blocks 26. At this time, the telescopic upright sleeve 21 is in an upwardly lifted state, and one end of its top is connected to the bottom of the universal ball joint support 3, so that the universal ball joint support 3 cannot be tilted.

[0029] When unlocking, the pressing handle 28 is pressed downward, and the pressing handle 28 controls the telescopic upright sleeve 21 and the rotating positioning sleeve 22 to move downward for a distance. When the rotating positioning sleeve 22 is pressed downward, the crest position of the corrugated guide groove 27 contacts the inclined surface of the wedge-shaped slider 25, so that the rotating positioning sleeve 22 has a radial torque until the wedge-shaped slider 25 moves to a position lower than the wedge-shaped positioning block 26. At this time, the rotating positioning sleeve 22 can be rotated by an angle so that the wedge-shaped slider 25 is located below the wedge-shaped positioning block 26, and the pressing handle 28 is released. The telescopic upright sleeve 21 and the rotating positioning sleeve 22 are reset under the action of the tensioning spring 24. At this time, the two inclined surfaces of the wedge-shaped slider 25 and the wedge-shaped positioning block 26 cooperate. The wedge-shaped slider 25 is blocked by one side of the wedge-shaped positioning block 26 after rotating an angle, that is, the entire rotating positioning sleeve 22 is blocked by the wedge-shaped positioning block 26 and fixed at a fixed position in the guide positioning shaft 20. At this time, the telescopic upright sleeve 21 is in a loosened state, that is, the quick locking mechanism is in an unlocked state, and the universal ball joint support 3 can be tilted at an angle.

[0030] After the wedge-shaped slider 25 and the wedge-shaped positioning block 26 are completely fitted and fixed, the rotation angle of the wedge-shaped slider 25 is just located at the wave crest position of the next corrugated guide groove 27 .

[0031] Therefore, the pressing handle 28 is pressed downward again, the telescopic upright sleeve 21 and the rotating positioning sleeve 22 move downward, and the corrugated guide groove 27 causes the rotating positioning sleeve 22 to have a radial torque again. When the wedge-shaped slider 25 moves downward and disengages from the wedge-shaped positioning block 26, the rotating positioning sleeve 22 rotates an angle again, so that the wedge-shaped slider 25 rotates between two adjacent wedge-shaped positioning blocks 26. After the pressing handle 28 is released, the telescopic upright sleeve 21 and the rotating positioning sleeve 22 are pushed upward by the tensioning spring 24, and the telescopic upright sleeve 21 is in a locked state again.

Claims

1. A universal ball bracket quick-lock mechanism, the universal ball bracket comprising a tripod base (1) connected to both ends of a core shaft (23) and a universal ball head (2), and a universal ball head hinge support (3) that can be rotated and locked on the universal ball head (2), characterized in that The quick lock mechanism comprises a guide positioning shaft (20), a rotation positioning sleeve (22) and a telescopic upright sleeve (21) which are sequentially sleeved on a core shaft (23) from bottom to top. The guide positioning shaft (20) is fixedly connected to a tripod base (1). A tension spring (24) is provided between the rotation positioning sleeve (22) and the guide positioning shaft (20). A pressing handle (28) for controlling the telescopic upright sleeve (21) to be pressed downward is provided on the core shaft (23) above the telescopic upright sleeve (21). A group of wedge-shaped sliders (25) are provided on the rotation positioning sleeve (22). A group of wedge-shaped positioning blocks (26) matched with the wedge-shaped sliders (25) are provided in the guide positioning shaft (20). A circle of corrugated guide grooves (27) matched with the wedge-shaped sliders (25) are provided on the telescopic upright sleeve (21).

2. The quick lock mechanism of a universal ball bracket according to claim 1, characterized in that The telescopic upright sleeve (21) is integrally formed by a core shaft mounting portion (33) and a positioning shaft mounting portion (34); a core shaft (23) mounting hole is provided on the core shaft mounting portion (33); the pressing handle (28) is hinged on the core shaft (23) via a pin; and a pin avoidance long hole is provided on the core shaft mounting portion (33); the positioning shaft mounting portion (34) is a double-layer cylindrical structure; the rotating positioning sleeve (22) is located in an inner cylinder of the double-layer cylindrical structure; and the guiding positioning shaft (20) is located in an outer cylinder of the double-layer cylindrical structure.

3. A quick lock mechanism of a universal ball bracket according to claim 2, characterized in that A group of vertical guide blocks (30) are arranged in an annular array on the outer wall of the inner cylinder of the positioning shaft mounting portion (34); a group of telescopic upright sleeve guide grooves (31) matched with the vertical guide blocks (30) and a group of rotary positioning sleeve positioning grooves (32) matched with the wedge-shaped slider (25) are respectively arranged on the guide positioning shaft (20); and the corrugated guide groove (27) is located at the bottom of the inner cylinder of the positioning shaft mounting portion (34).

4. The quick lock mechanism of the universal ball bracket according to claim 2, characterized in that A spherical groove matching the universal ball head (2) is provided on the top of the core shaft mounting portion (33).

5. The quick lock mechanism of the universal ball bracket according to claim 1, characterized in that A plane bearing (35) is provided on the core shaft (23) located in the rotating positioning sleeve (22), and the rotating positioning sleeve (22) rotates on the core shaft (23) via the plane bearing (35).

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