Plane thrust locking holder of dual-mode adjusting structure

Abstract

The invention relates to the technical field of photographic equipment, in particular to a plane thrust locking cradle head of a dual-mode adjusting structure, which comprises a cradle head seat, an upper pushing piece, a lower pushing piece, a control device, a screw rod, a fixed limiting stopper, a main knob and a secondary knob, the secondary knob is used for setting before the pan-tilt is used, when the main knob rotates anticlockwise to the head (the control device returns to the initial position), the initial position of the control device is adjusted by converting screw-thread fit of the secondary knob and the screw rod into displacement motion of the screw rod along the axial direction of the main knob, and drifting of the initial position caused by clearance in the pan-tilt using process is compensated. By adjusting the initial position of the control device, the lower pushing piece can be shifted to horizontally rotate to adjust the initial damping force between the upper pushing piece and the holder ball in the initial state, and the effect of resetting the initial locking position and the initial damping force of the holder is achieved; the technical problem that the locking starting point cannot be reset due to drifting of the locking starting point caused by part clearance in the using process of the holder is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of photographic equipment, and in particular to a planar thrust locking pan head with a dual-mode adjustment structure. Background Art

[0002] Traditional spherical heads have become commonly used photographic equipment due to their lightness and flexibility. Their locking mechanism relies on the precise fit between parts, but after long-term use, the fit between the parts is prone to produce clearance, and the initial locking position of the head is prone to drift. When the knob is unlocked and returns to the starting point, the gimbal sphere is prone to lose damping force and shake, and when the knob is tightened, it will idle, seriously affecting the user experience. Therefore, how to design a gimbal that can reset the locking starting position is an urgent problem to be solved by technical personnel in this field. Summary of the invention

[0003] In view of this, the purpose of the present invention is to provide a planar thrust locking gimbal with a dual-mode adjustment structure to solve the technical problem described in the background technology that the locking starting point drifts and cannot be reset due to the clearance of parts during the use of the gimbal.

[0004] The present invention is achieved through the following technical solutions:

[0005] A planar thrust locking gimbal with a dual-mode adjustment structure, comprising a gimbal seat, wherein an upper push piece and a lower push piece are vertically arranged in the gimbal seat, a control device is coupled to the lower push piece, a screw rod for adjusting the position of the control device is installed in the gimbal seat, and a fixed stopper for limiting the starting position of the control device is fixedly connected to one end of the screw rod;

[0006] It also includes a main knob for controlling the rotation of the screw. When the screw rotates, the control device moves and drives the push-down member to rotate and push the push-up member to move the pan / tilt ball to lock or unlock it.

[0007] The end of the screw rod away from the fixed limiter is threadedly connected with a secondary knob, wherein when the secondary knob rotates, it cooperates with the screw rod thread to convert into a displacement movement of the screw rod along the axial direction of the main knob, thereby adjusting the starting position of the control device.

[0008] Furthermore, the main knob is hollow inside, and a limiting groove is provided on its inner wall;

[0009] The secondary knob comprises a connecting portion threadably connected to the screw rod, and an operating portion is integrally formed on an outward side of the connecting portion;

[0010] A side groove is provided on the outer surface of the connecting part, a limit buckle is inserted in the side groove, an elastic part A is installed between the limit buckle and the side groove, and the limit buckle extends into the limit groove under the force generated by the elastic part A to limit the axial movable stroke of the secondary knob.

[0011] Furthermore, the middle portion of the screw rod is a limiting portion, and a rotation limiting block is fixedly connected to the inside of the main knob, and the shape of the through hole of the rotation limiting block is consistent with the cross-sectional shape of the limiting portion.

[0012] Furthermore, an end groove is formed on a side of the secondary knob facing the rotation limit block, and an elastic member B is installed in the end groove.

[0013] Furthermore, a hollow fixing screw is installed in the main knob, and the fixing screw is sleeved outside the screw rod;

[0014] A threaded hole is provided on the side of the pan-tilt seat, and the fixing screw is threadedly connected to the threaded hole. The main knob only performs circumferential movement under the restriction of the fixing screw and the rotation limit block.

[0015] Furthermore, a plurality of slope-shaped protrusions are integrally formed on opposite sides of the upper push member and the lower push member;

[0016] When the inclined surfaces of the upper and lower protrusions completely overlap, the distance between the upper push piece and the lower push piece is the minimum. When the inclined surfaces of the upper and lower protrusions gradually stagger, the distance between the upper push piece and the lower push piece increases accordingly.

[0017] Furthermore, a toggle groove is provided on the outer circumferential surface of the push-down member, and the control end of the control device extends into the toggle groove.

[0018] Furthermore, a guide groove is vertically opened on the inner wall of the pan-tilt seat, and a guide block is integrally formed on the outer circumferential surface of the upper push member, which cooperates with the limit groove to limit the circumferential rotation of the upper push member.

[0019] The beneficial effects of the present invention are:

[0020] 1. The secondary knob is used for setting the gimbal before use. When the main knob is turned counterclockwise to the end (the control device returns to the initial position), the secondary knob is turned to cooperate with the screw thread to convert it into a displacement movement of the screw along the axial direction of the main knob, thereby adjusting the starting position of the control device, compensating for the drift of the initial position caused by the clearance during the use of the gimbal, and eliminating the clearance generated after the use of the gimbal.

[0021] 2. By adjusting the initial position of the control device, the horizontal rotation of the push-down part can be toggled to adjust the initial damping force between the push-up part and the pan / tilt sphere in the initial state, which has the function of resetting the initial locking position and the initial damping force of the pan / tilt, and solves the technical problem that the locking starting point drifts due to the slack of parts during the use of the pan / tilt and the locking starting point cannot be reset.

[0022] 3. The main knob is used for the locking (unlocking) control during the use of the pan / tilt. The locking force can be arbitrarily adjusted within the range of the initial damping force set by the secondary knob and the locking force of the pan / tilt sphere. When the main knob is rotated to control the circumferential rotation of the screw rod, the control device will axially displace on the screw rod, and then toggle the push-down part to rotate and push the push-up part to move to lock or unlock the pan / tilt sphere. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic structural diagram of the planar thrust locking pan / tilt with a dual-mode adjustment structure of the present invention.

[0024] Figure 2 It is a cross-sectional view of the pan / tilt base of the planar thrust locking pan / tilt with a dual-mode adjustment structure of the present invention.

[0025] Figure 3 It is a schematic diagram of the installation position of the screw rod of the planar thrust locking pan / tilt with a dual-mode adjustment structure of the present invention.

[0026] Figure 4 It is a schematic connection diagram of the control device and the push-down part of the planar thrust locking pan / tilt with a dual-mode adjustment structure of the present invention.

[0027] Figure 5 It is a cross-sectional view of the main knob of the planar thrust locking pan / tilt with a dual-mode adjustment structure of the present invention.

[0028] Figure 6 It is an exploded view of the main knob and the secondary knob of the planar thrust locking pan / tilt with a dual-mode adjustment structure of the present invention.

[0029] Figure 7 It is an exploded view of the limit buckle and the secondary knob of the planar thrust locking pan / tilt with a dual-mode adjustment structure of the present invention.

[0030] Figure 8 It is a cross-sectional view of the push-up part and the push-down part of the planar thrust locking pan / tilt with a dual-mode adjustment structure of the present invention.

[0031] In the figure: 1-pan head seat, 2-upper push piece, 3-lower push piece, 4-control device, 5-screw, 51-limiting part, 7-fixed limiter, 8-main knob, 81-limiting groove, 9-secondary knob, 91-connecting part, 92-operating part, 10-side groove, 11-limiting buckle, 12-elastic part A, 13-rotational limit block, 14-end groove, 15-elastic part B, 16-fixing screw, 17-threaded hole, 18-bump, 19-toggle groove, 20-guide groove, 21-guide block, 22-ball sleeve, 23-pan head ball, 24-gasket. DETAILED DESCRIPTION

[0032] Typical embodiments that embody the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various changes in different embodiments without departing from the scope of the present invention, and the descriptions and illustrations therein are essentially used for illustration purposes rather than for limiting the present invention.

[0033] In the description of the present application, the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the structure referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0034] See also Figure 1 , Figure 2 and Figure 8 The present invention provides a technical solution: a planar thrust locking gimbal with a dual-mode adjustment structure, comprising a gimbal seat 1, a ball sleeve 22 is installed in the top opening of the gimbal seat 1, a gimbal ball 23 is installed in the ball sleeve 22, an upper push piece 2 and a lower push piece 3 are arranged vertically in sequence below the gimbal ball 23, the lower push piece 3 is rotatably installed at the bottom of the gimbal seat 1, the upper push piece 2 and the lower push piece 3 are cylindrical as a whole, and a plurality of slope-shaped protrusions 18 are integrally formed on the opposite sides of the upper push piece 2 and the lower push piece 3;

[0035] When the inclined surfaces of the upper and lower protrusions 18 completely overlap, the distance between the upper push member 2 and the lower push member 3 is the minimum; when the inclined surfaces of the upper and lower protrusions 18 gradually stagger along the upward slope direction, the distance between the upper push member 2 and the lower push member 3 increases accordingly.

[0036] When the push-down member 3 rotates horizontally under the action of external force, the push-down member 3 can lock the pan-tilt ball 23 by pushing the upper push-up member 2 vertically with the cooperation of the upper and lower protrusions 18. A guide groove 20 is vertically provided on the inner wall of the pan-tilt seat 1, and a guide block 21 is integrally formed on the outer circumferential surface of the upper push-up member 2 to cooperate with the limit groove 81 to limit the circumferential rotation of the upper push-up member 2, thereby ensuring that the push-down member 3 pushes the upper push-up member 2 to move effectively through the upper and lower protrusions 18.

[0037] When the push-down member 3 rotates horizontally in the opposite direction, the inclined surfaces of the upper and lower push-down members 3 tend to overlap and the distance between them decreases. At this time, the push-up member 2 moves downward under the action of gravity to unlock the pan / tilt ball 23.

[0038] See also Figures 3 to 5 The push-down member 3 is coupled with a control device 4, and a toggle groove 19 is provided on the outer circumferential surface of the push-down member 3. The control end of the control device 4 extends into the toggle groove 19. A screw 5 for adjusting the position of the control device 4 is installed in the pan-tilt seat 1. When the screw 5 rotates, the control device 4 can be driven to adjust the axial position of the control device 4 on the screw 5. When the control device 4 moves, the push-down member 3 is toggled to rotate horizontally within a certain range, so as to rotate the push-up member 2 to move the pan-tilt ball 23 to lock or unlock;

[0039] By utilizing the characteristics of the precise adjustment of the screw 5 and the planar thrust ramp structure of the bump 18, the control stroke of the axial displacement of the screw 5 is amplified, thereby achieving precise control of the locking force of the pan / tilt ball.

[0040] See also Figures 3 to 5 One end of the screw rod 5 is fixedly connected to a fixed limiter 7 for limiting the starting position of the control device 4, and also includes a main knob 8 for controlling the rotation of the screw rod 5. The main knob 8 is penetrated by a fixing screw 16 for installing the adjustment device. The fixing screw 16 is hollow and is sleeved on the outside of the screw rod 5. When the main knob 8 is installed on the pan-tilt seat 1 through the fixing screw 16 and the threaded hole 17, the main knob 8 only performs circumferential movement under the restriction of the fixing screw 16 and the rotation limit block 13, thereby effectively controlling the rotation of the screw rod 5 and adjusting the position of the control device 4.

[0041] See also Figure 3 , Figure 5 , Figure 6 and Figure 7, the main knob 8 is hollow inside, and a limiting groove 81 is formed on its inner wall. One end of the screw rod 5 away from the fixed stopper 7 is threadedly connected with a secondary knob 9. The secondary knob 9 includes a connecting portion 91 threadedly connected with the screw rod 5, and an operating portion 92 is integrally formed on the outer side of the connecting portion 91;

[0042] A side groove 10 is formed on the outer surface of the connecting portion 91, a limiting buckle 11 is inserted into the side groove 10, and an elastic member A12 is installed between the limiting buckle 11 and the side groove 10. The elastic member A12 is a spring or other elastic structures in the prior art that can achieve the same purpose. The limiting buckle 11 extends into the limiting groove 81 under the action of the force generated by the elastic member A12 to limit the axial movement stroke of the secondary knob 9;

[0043] Please refer to Figure 3 , Figure 5 and Figure 6 , the middle part of the screw rod 5 is a limiting portion 51, the cross section of the limiting portion 51 is a polygonal structure, a rotating limiting block 13 is fixedly connected to the inside of the main knob 8 by screws, the screw rod 5 is inserted into the rotating limiting block 13, and the through hole of the rotating limiting block 13 is a polygonal hole shape, and its cross section shape coincides with the cross section shape of the limiting portion 51. When the main knob 8 rotates, the screw rod 5 can be driven to rotate synchronously through the cooperation of the rotating limiting block 13 and the limiting portion 51, and when the screw rod 5 is subjected to an axial external force, it can perform an axial displacement movement relative to the main knob 8.

[0044] When the operating portion 92 rotates under the action of an external force, since the limiting buckle 11 extends into the limiting groove 81 under the action of the elastic member A12 to limit the axial movement stroke of the secondary knob 9, at this time, the threaded fit between the connecting portion 91 and the screw rod 5 is converted into the axial displacement movement of the screw rod 5 along the main knob 8, thereby driving the fixed stopper 7 and the control device 4 to perform an overall axial displacement, adjusting the starting position of the control device 4, and eliminating the slack generated after the use of the pan-tilt head.

[0045] Specifically, when the main knob 8 is rotated counterclockwise to the end (it cannot be turned further), the fixed limiter 7 limits the control device 4, and the control device 4 returns to the starting position. At this time, when the secondary knob 9 is rotated clockwise, the screw 5 can be pulled outwards, and the distance between the fixed limiter 7 and the secondary knob 9 is reduced. When the secondary knob 9 is rotated counterclockwise, the distance between the fixed limiter 7 and the secondary knob 9 is increased. In this way, the starting position of the control device 4 can be changed, so as to adjust the coincidence degree of the inclined surface of the bump 18 between the lower pushing member 3 and the upper pushing member 2 in the initial state, that is, to adjust the initial distance between the upper and lower pushing members, and set the initial damping force between the upper pushing member 2 and the pan-tilt sphere 23.

[0046] Please refer to Figure 3 , Figure 6 and Figure 7 , a terminal groove 14 is formed on one side of the secondary knob 9 facing the rotation limiter 13. An elastic member B15 is installed in the terminal groove 14. The elastic member B15 is made of a nitrile rubber ring or other elastic structures in the prior art that can achieve the same purpose. The elastic member B15 is used to generate an outward axial force, so as to play a certain buffering role, and the feel is softer and smoother when the secondary knob 9 is screwed. By selecting elastic members B15 with different elastic forces, the initial damping force of the secondary knob 9 can be adjusted and set. A gasket 24 is installed between the elastic member B15 and the groove wall of the terminal groove 14. The gasket 24 can reduce the friction between the secondary knob 9 and the elastic member B15 during the rotation process of the secondary knob 9, so that the rotation process of the secondary knob 9 is smoother.

[0047] Finally, it should be noted that the above embodiments are only the preferred embodiments of the present invention, and the scope of protection of the present invention cannot be limited thereby. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention fall within the scope of protection required by the present invention.

Claims

1. A planar thrust locking pan-tilt with a dual-mode adjustment structure, comprising a pan-tilt base (1), characterized in that: An upper push piece (2) and a lower push piece (3) are vertically arranged in the pan-tilt seat (1); a control device (4) is coupled to the lower push piece (3); a screw rod (5) for adjusting the position of the control device (4) is installed in the pan-tilt seat (1); one end of the screw rod (5) is fixedly connected to a fixed stopper (7) for limiting the starting position of the control device (4); It also includes a main knob (8) for controlling the rotation of the screw rod (5). When the screw rod (5) rotates, the control device (4) moves and drives the push-down member (3) to rotate and push the push-up member (2) to move the pan / tilt head sphere to lock or unlock it. The end of the screw rod (5) away from the fixed limiter (7) is threadedly connected to a secondary knob (9), wherein when the secondary knob (9) rotates, it is converted into a displacement movement of the screw rod (5) along the axial direction of the main knob (8) by threaded cooperation with the screw rod (5), thereby adjusting the starting position of the control device (4).

2. The planar thrust locking pan-tilt with a dual-mode adjustment structure according to claim 1, characterized in that: The main knob (8) is hollow inside, and a limiting groove (81) is provided on its inner wall; The secondary knob (9) comprises a connecting portion (91) threadedly connected to the screw rod (5), and an operating portion (92) is integrally formed on an outward side of the connecting portion (91); A side groove (10) is provided on the outer surface of the connecting portion (91), a limit buckle (11) is inserted into the side groove (10), an elastic member A (12) is installed between the limit buckle (11) and the side groove (10), and the limit buckle (11) extends into the limit groove (81) under the action force generated by the elastic member A (12) to limit the axial movable stroke of the secondary knob (9).

3. The planar thrust locking pan-tilt head with a dual-mode adjustment structure according to claim 1, characterized in that: The middle part of the screw rod (5) is a limiting portion (51), and a rotation limiting block (13) is fixedly connected inside the main knob (8), and the shape of the through hole of the rotation limiting block (13) is consistent with the cross-sectional shape of the limiting portion (51).

4. The planar thrust locking pan-tilt with a dual-mode adjustment structure according to claim 3, characterized in that: An end groove (14) is provided on a side of the secondary knob (9) facing the rotation limit block (13), and an elastic member B (15) is installed in the end groove (14).

5. The planar thrust locking pan-tilt with a dual-mode adjustment structure according to claim 3, characterized in that: The main knob (8) is provided with a hollow fixing screw (16), and the fixing screw (16) is sleeved on the outside of the screw rod (5); A threaded hole (17) is provided on the side of the pan-tilt seat (1), and the fixing screw (16) is threadedly connected to the threaded hole (17). The main knob (8) only moves in a circumferential direction under the restriction of the fixing screw (16) and the rotation limit block (13).

6. The planar thrust locking pan-tilt with a dual-mode adjustment structure according to claim 1, characterized in that: A plurality of slope-shaped protrusions (18) are integrally formed on opposite sides of the upper push member (2) and the lower push member (3); When the inclined surfaces of the upper and lower protrusions (18) completely overlap, the distance between the upper push member (2) and the lower push member (3) is the minimum. When the inclined surfaces of the upper and lower protrusions (18) gradually stagger, the distance between the upper push member (2) and the lower push member (3) increases accordingly.

7. The planar thrust locking pan-tilt with a dual-mode adjustment structure according to claim 1, characterized in that: A toggle groove (19) is provided on the outer circumferential surface of the push-down member (3), and the control end of the control device (4) extends into the toggle groove (19).

8. The planar thrust locking pan-tilt with a dual-mode adjustment structure according to claim 1, characterized in that: A guiding groove (20) is vertically formed on the inner wall of the pan-tilt base (1), and a guiding block (21) that cooperates with the limiting groove (81) to limit the circumferential rotation of the upward pushing member (2) is integrally formed on the outer circumferential surface of the upward pushing member (2).

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