Ball head locking mechanism with fine adjustment function

Abstract

The utility model provides a ball head locking mechanism with a fine adjustment function, which comprises a ball head, a ball head cover, a fine adjustment assembly and a main adjustment assembly, the fine adjustment assembly applies an acting force n to the ball head to form a first acting force; and the main adjusting assembly and the fine adjusting assembly apply acting force m to the ball head at the same time to form second acting force, the first acting force and / or the second acting force act jointly, so that the ball head is in an unlocking state, a semi-damping state and a locking state, and in the semi-damping state, the ball head is stressed and performs relative rotation movement in the ball head cover. According to the locking mechanism, a semi-damping state with small stress can be independently formed, and then the locking mechanism is matched with the main adjusting assembly to achieve the set ball head damping force.

Description

Technical Field

[0001] The utility model relates to the technical field of ball head locking in a photographic tripod, in particular to a ball head locking mechanism with a fine-tuning function. Background Art

[0002] In the prior art, in the assembly of the ball head and the deadlock component, locking adjustment is performed through the main adjustment component and the fine adjustment component. However, during use, when a semi-damping state needs to be formed, the main adjustment component and the fine adjustment component need to cooperate, and the fine adjustment component alone cannot apply force, resulting in limited use. Utility Model Content

[0003] The utility model aims to provide a ball head locking mechanism with a fine-tuning function, which can independently apply a force to the ball head through a fine-tuning component, thereby enabling the ball head to be acted on alone, rather than having to cooperate with a main adjustment component.

[0004] In order to achieve the above-mentioned purpose, the utility model is implemented through the following technical solutions.

[0005] A ball head locking mechanism with a fine-tuning function comprises a ball head, a ball head cover, a fine-tuning component and a main-tuning component, wherein the fine-tuning component applies a force n to the ball head to form a first force; the main-tuning component and the fine-tuning component simultaneously apply a force m to the ball head to form a second force, wherein the first force and / or the second force act together to place the ball head in an unlocked state, a semi-damped state and a locked state, and in the semi-damped state, the ball head is subjected to force to perform relative rotational motion in the ball head cover.

[0006] Furthermore, in the semi-damped or unlocked state, after the fine-tuning component applies a force n1 to the ball head and the main-tuning component applies a force m-n1 to the ball head, the ball head is locked, and the force n1≤force n<force m.

[0007] Furthermore, the first force and the second force have the same action form, and both convert rotational motion into up and down or horizontal motion, so that the up and down or horizontal motion exerts a force on the ball head.

[0008] Furthermore, the main adjustment component includes a main screw rod partially extending into the ball head cover, and the fine adjustment component includes an internal screw rod passing through the main screw rod and acting on the top dead rod component.

[0009] Furthermore, it also includes a fine-adjustment screw rod located between the top-deadjustment assembly and the built-in screw rod, and the fine-adjustment screw rod partially extends into the top-deadjustment assembly.

[0010] Furthermore, a limiting cavity is formed near the built-in screw rod at the fine-tuning screw rod to limit the movement distance of the built-in screw rod.

[0011] Furthermore, the fine-tuning screw portion extends outward to form a locking portion that locks with the locking assembly.

[0012] Furthermore, it also includes a fine-tuning knob, which controls the built-in screw to move in the main screw, driving the friction between the ball head and the ball head cover and / or the deadlock component to increase to form the semi-damping state.

[0013] Furthermore, it also includes a driving block for driving the main screw, wherein the driving block forms an assembly cavity which is coaxial with the fine-tuning screw and the main screw and is used for assembling the two.

[0014] Furthermore, the main screw, the driving block and the fine-tuning screw are coaxially arranged inside the ball head cover.

[0015] The beneficial effects of the utility model are as follows:

[0016] Firstly, in the present invention, the fine-tuning component can independently apply force to the ball head, and at this time, a corresponding semi-damping state can be independently formed, which is different from the prior art that requires multiple checks.

[0017] Secondly, in the present invention, when the fine-tuning component and the main-tuning component are matched with each other, the fine-tuning component can always exist during the action of the main-tuning component, thereby playing a good role in subsequent small adjustments.

[0018] Thirdly, the utility model uses various matching settings to split the main adjustment component in the prior art into multiple components that are used in conjunction with each other. At the same time, the fine-tuning component and the main adjustment component are independent of each other, and the user can directly act on the fine-tuning knob according to the weight of the camera to achieve the set ball head damping force. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the structure of a ball head locking mechanism with a fine-tuning function provided by the utility model;

[0020] Figure 2 An assembly diagram of a ball head locking mechanism with a fine-tuning function provided by the utility model;

[0021] Figure 3 This is a cross-sectional view of a ball head locking mechanism with a fine-tuning function provided by the utility model;

[0022] Figure 4 The second cross-sectional view of the ball head locking mechanism with fine-tuning function provided by the utility model;

[0023] In the figure:

[0024] 100, ball head; 200, ball head cover; 300, fine-tuning assembly; 310, built-in screw; 320, fine-tuning screw; 321, limit cavity; 322, positioning portion; 330, fine-tuning knob; 400, main adjustment assembly; 410, main screw; 420, main knob; 500, deadlock assembly; 510, upper deadlock assembly; 520, lower deadlock assembly; 600, drive block; 700, fixing part. DETAILED DESCRIPTION

[0025] 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.

[0026] Refer to the attached Figure 1-4 As shown, the ball head locking mechanism with fine-tuning function in this embodiment mainly includes a ball head 100, a ball head cover 200, a fine-tuning component 300 and a main adjustment component 400. The fine-tuning component 300 applies a force n to the ball head 100 to form a first force; the main adjustment component 400 and the fine-tuning component 300 simultaneously apply a force m to the ball head 100 to form a second force. The first force and / or the second force act together to make the ball head 100 in an unlocked state, a semi-damped state and a locked state, and in the semi-damped state, the ball head 100 is subjected to force and performs relative rotational motion in the ball head cover 200.

[0027] The ball head locking mechanism in this embodiment can achieve a semi-damping state through the fine-tuning component 300 alone while satisfying the locking or unlocking functions. In particular, it can apply force to the ball head alone, so that the ball head can perform multi-angle rotational movement in the ball head cover, but the range of movement is limited, thereby forming a semi-damping state.

[0028] Different from the prior art, the fine-tuning component in this embodiment can act directly on the ball head 100, so that the user can achieve the ball head damping force set or expected by himself according to the weight of the camera in combination with the fine-tuning component, instead of having to cooperate with the main adjustment component to achieve it.

[0029] In order to more clearly explain the relevant functions of the fine-tuning component, in actual use, when the ball head is in a semi-damped or unlocked state, after the fine-tuning component 300 applies a force n1 to the ball head, the ball head is always in a semi-damped state. At this time, after the main adjustment component 400 applies a force m-n1 to the ball head 100, the ball head 100 is completely in a locked state. The ball head is locked, and the force n1≤force n<force m. In this embodiment, during the whole process, the force is the largest when the main adjustment component and the fine-tuning component act together, and then the force applied by the fine-tuning component 300 independently on the ball head 100 is second. Finally, the force required to ensure that the fine-tuning component 300 is in a semi-damped state, or the force applied from the semi-locked state to the semi-damped state is the smallest. In this process, the force required to achieve and maintain semi-damping from different states, as well as the force required to maintain this state, are achieved through changes in the magnitude of the force.

[0030] In order to facilitate the subsequent structural design, the first force and the second force have the same action form, and both adopt the method of converting the rotational motion into the up-down or horizontal motion, so that the up-down or horizontal motion applies the action force to the ball head 100. In this embodiment, the ball head is subjected to the linear force by the force direction conversion method. On the one hand, the structural design of the force application component is saved. Direct linear force application requires a larger structure. On the other hand, the two have the same action form. In this process, they both directly act on the ball head, and the force direction is the same, so they can assist each other. If different forms of force are used, it is necessary to consider the offset between the forces, etc., resulting in the problem of increased applied force and increased cost.

[0031] The structures of various force-applying components and adjustment components in this embodiment are described as follows:

[0032] First, with regard to the relative arrangement of the main adjustment component and the fine adjustment component, in this embodiment, the main adjustment component 400 includes a main screw 410 partially extending into the ball head cover 200, and the fine adjustment component 300 includes an internal screw 310 that passes through the main screw 410 and acts on the top dead component 500. In this embodiment, the internal arrangement of the fine adjustment component does not need to increase the entire structural arrangement, so that the originally solid main screw becomes a hollow structure, the structure is compact, and the space utilization rate is good. At this time, the internal screw 310 acts on the top dead component 500, so that the top dead component 500 acts on the ball head 100 to complete the various state adjustments between it and the ball head cover 200.

[0033] In order to protect the built-in screw, the diameter of the built-in screw must be relatively small and the strength is relatively weak, so a fine-tuning screw 320 can be added. At this time, the fine-tuning screw 320 is arranged between the top-dead component 500 and the built-in screw 310. At the same time, in order to save space, the fine-tuning screw 320 partially extends into the top-dead component 500. This built-in and indirect arrangement prevents the fine-tuning screw 320 from contacting the larger top-dead component 500 on the outside, thereby protecting it.

[0034] In order to avoid the fine-tuning screw adjusting too far and affecting the semi-damping state, the fine-tuning screw 320 is close to the built-in screw 310 to form a limit cavity 321 to limit the movement distance of the built-in screw 310. In this embodiment, the setting of the limit cavity 321 makes the end of the built-in screw 310 located in the limit cavity 321. This setting similar to inlay has a firm structure and fast force transmission. Specifically, a flat connection is selected here, that is, there is a flat connection between the built-in screw 310 and the fine-tuning screw 320. At this time, the limit cavity 321 fixes or clamps the periphery to form a flat built-in screw 310.

[0035] For ease of assembly, in this embodiment, the fine-tuning screw and the built-in screw as well as the fine-tuning screw and the top dead assembly are all threadedly connected, and the top dead assembly 500 includes an upper top dead assembly 510 and a lower top dead assembly 520. In this embodiment, the main screw and the fine-tuning screw directly act on the lower top dead assembly, while the upper top dead assembly directly contacts the ball head.

[0036] Specifically, in order to better achieve fine-tuning, a slot is formed on the deadbolt assembly 500, and then the fine-tuning screw 320 extends outward to form a locking portion 322 that is inserted into the slot. Once the fine-tuning screw moves forward or backward, it will inevitably drive the deadbolt assembly 500 to move, so that the movement distance is limited. At this time, the force of the deadbolt assembly on the ball head 100 is also limited, so that fine-tuning can be better achieved.

[0037] For the convenience of control, a fine adjustment knob 330 is also included, and the fine adjustment knob 330 controls the inner screw 310 to move in the main screw 410, driving the friction between the ball head 100 and the ball head cover 200 and / or the top dead component 500 to increase to form the semi-damping state. The fine adjustment knob is added, which controls the movement direction of the inner screw by rotating, drives the fine adjustment screw, and thus achieves a force lower than the ball head.

[0038] In order to make the structural design reasonable and the force and the like relatively uniform, a driving block 600 is also included to drive the main screw 410, and the driving block 600 forms an assembly cavity coaxial with the fine-adjusting screw 320 and the main screw 410 and used for assembling the two. At this time, the main screw and the fine-adjusting screw are all located in the driving block 600, and the driving block 600 realizes the dual functions of driving and assembling.

[0039] In order to make the structure relatively symmetrical, the main screw 410, the driving block 600 and the fine adjustment screw 320 are coaxially arranged in the ball head cover 200. Thus, the whole large structure is relatively symmetrical, the force is relatively uniform, and the structure is beautiful.

[0040] In this embodiment, the assembly and interaction forces of the entire locking mechanism are as follows:

[0041] When assembling the ball head and the camera, firstly, a screw is set at the upper 1 / 4 of the ball head 100, and the screw is grafted with the camera to realize the camera assembly;

[0042] Secondly, when the ball head is unlocked, it can move freely in the ball head cover; the top deadlock component 500 on the ball head 100 is arranged in the ball head cover, and can only move up and down, and the upper arc surface of the upper deadlock component 510 of the ball head 100 is tightly attached to the spherical arc surface of the lower side of the ball head 100, so that the ball head can move between the ball head cover and the top deadlock component of the ball head; the inclined surface of the lower deadlock component 520 of the ball head is tightly attached to the inclined surface of the top deadlock block on the ball head, and the lower deadlock block of the ball head can only move left and right in the ball head cover;

[0043] Next, one end of the fine-adjusting screw 320 is connected to the lower deadlock assembly 500 of the ball head 100 by screw threads, and the other end is connected to the driving block 600, and the fine-adjusting screw 320 can only rotate along the axis in the driving block 600, and cannot move left and right or up and down; at this time, the other end of the driving block 600 is connected to the main screw 410 by screw threads, and the driving block 600 can only slide left and right near the lower deadlock assembly 510 of the ball head, and cannot move up and down;

[0044] The other end of the main screw 410 is connected to the main knob 420 at a flat position and is locked and fixed by a large nut, so that the main knob 420 and the main screw 410 become one body; and one end of the built-in screw 310 is connected to the fine-tuning screw 320 at a flat position, but both can move left and right, and the other end of the built-in screw 310 is connected to the fine-tuning knob 330 at a flat position and is fixed by a small nut, so that the built-in screw and the fine-tuning knob become one body;

[0045] It also includes a fixing member 700. Specifically, the fixing member and the ball head cover are locked by a fastener screw, and the two form a cavity;

[0046] In this embodiment, the principle of achieving ball head semi-damping is as follows:

[0047] First, the fine-tuning knob 330 is rotated clockwise. Under the conduction of the built-in screw 310, the fine-tuning screw 320 is driven to rotate clockwise. Under the action of the screw thread, the lower deadlocking component 520 of the ball head is driven to move to the left. At this time, under the action of the deadlocking inclined surface, the upper deadlocking component 510 of the ball head 100 is moved upward, so that the gap between the upper deadlocking component 510 of the ball head and the ball head cover 200 becomes smaller and smaller, so that the friction between the ball head component and the ball arc surface becomes larger and larger, thereby achieving a semi-damping effect of the ball head. Since the force applied to the fine-tuning knob by the external force is limited, the fine-tuning knob will not cause the ball head to be completely locked.

[0048] On the contrary, if you turn the knob counterclockwise, the half damping force of the fine-tuning knob ball head disappears or weakens;

[0049] In this embodiment, the locking and unlocking principles of the ball head 100 are as follows:

[0050] The main knob 420 is rotated clockwise. Under the transmission of the main screw 410 and the drive of the screw teeth, the driving block 600 moves to the left. The driving block 600 pushes the fine-tuning screw 320 and the lower deadlocking component 520 of the ball head 100 to move to the left. At this time, under the action of the deadlocking inclined surface, the upper deadlocking component 510 of the ball head 100 moves upward, so that the gap between the upper deadlocking component 510 of the ball head and the ball head cover 200 becomes smaller and smaller, so that the friction between the ball head 100 and the ball arc surface becomes larger and larger, thereby achieving the ball head locking effect. Since the force applied to the large knob by the external force is large enough, the large knob will completely lock the ball head.

[0051] On the contrary, if the large knob is turned counterclockwise, the locking force of the ball head will decrease. It is worth noting that even if the large knob is turned counterclockwise to the bottom, the ball head semi-damping still exists, because the ball head semi-damping is controlled by the fine-tuning knob. As long as the fine-tuning knob does not move, the ball head semi-damping still exists.

[0052] In actual use, if you just loosen the fine-tuning knob (that is, there is no half damping), the ball head will go from the fully loose state to the locked state, and the rotation angle of the main knob 420 will be large (that is, the leftward stroke of the driving block will be large). If the ball head is in the half damping state, the ball head will go from the half damping state to the locked state, and the rotation angle of the large knob will be small (that is, the leftward stroke of the driving block will be small).

[0053] For example, during the entire locking process, the ball head will rotate within a range of 360°, and the semi-damping state is only generated in the semi-locked state. In this embodiment, the original main screw is segmented, so that the lower deadlock assembly of the front part can be driven in advance to achieve semi-damping.

[0054] 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.

[0055] 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. Ball head locking mechanism with fine adjustment function, characterized in that: The invention comprises a ball head, a ball head cover, a fine adjustment component and a main adjustment component, wherein the fine adjustment component applies a force n to the ball head to form a first force; the main adjustment component and the fine adjustment component simultaneously apply a force m to the ball head to form a second force, and the first force and / or the second force act together to put the ball head in an unlocked state, a semi-damped state and a locked state, and in the semi-damped state, the ball head is subjected to force and performs relative rotational motion in the ball head cover; The main adjustment component includes a main screw rod partially extending into the ball head cover, and the fine adjustment component includes an internal screw rod passing through the main screw rod and acting on the top dead rod component.

2. The ball head locking mechanism with fine adjustment function according to claim 1, characterized in that: In the semi-damping or unlocking state, after the fine-tuning component applies a force n1 to the ball head and the main-tuning component applies a force m-n1 to the ball head, the ball head is locked, and the force n1≤force n<force m.

3. The ball head locking mechanism with fine adjustment function according to claim 1, characterized in that: The first force and the second force have the same action form, and both convert rotational motion into up-and-down or horizontal motion, so that the up-and-down or horizontal motion exerts a force on the ball head.

4. The ball head locking mechanism with fine adjustment function according to claim 1, characterized in that: It also includes a fine-adjustment screw rod located between the top-deadjustment assembly and the built-in screw rod, wherein a portion of the fine-adjustment screw rod extends into the top-deadjustment assembly.

5. The ball head locking mechanism with fine adjustment function according to claim 4, characterized in that: The fine-tuning screw forms a limiting cavity near the built-in screw to limit the moving distance of the built-in screw.

6. The ball head locking mechanism with fine adjustment function according to claim 5, characterized in that: The fine-tuning screw rod portion extends outward to form a locking portion for locking with the deadbolt assembly.

7. The ball head locking mechanism with fine adjustment function according to claim 1, characterized in that: It also includes a fine-tuning knob, which controls the built-in screw to move in the main screw, driving the friction between the ball head and the ball head cover and / or the deadlock component to increase to form the semi-damping state.

8. The ball head locking mechanism with fine adjustment function according to claim 1, characterized in that: The invention also comprises a driving block for driving the main screw, wherein the driving block forms an assembly cavity which is coaxial with the fine adjustment screw and the main screw and is used for assembling the two.

9. The ball head locking mechanism with fine adjustment function according to claim 8, characterized in that: The main screw, the driving block and the fine-adjusting screw are coaxially arranged inside the ball head cover.

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