Quick-assembly mechanism

Abstract

Quick-assembly mechanism, characterized in that it comprises a base (1), a movable block (2), a locking block (3), a quick-assembly seat (4) and a trigger assembly (5); wherein the movable block (2) and the locking block (3) are located on opposite sides of the base (1), and the movable block (2) and the locking block (3) are aligned on the front (1a) of the base (1) to form a dovetail groove, wherein a pivot shaft (7) is attached to the rear (1b) of the base (1) and one end of the movable block (2) is rotatably connected to the pivot shaft (7), wherein a torsion spring (8) is wound around the pivot shaft (7), one end of the torsion spring (8) bearing against the base (1) and the other end bearing against the movable block (2), wherein the elastic force of the torsion spring (8) causes the movable block (2) to rotate in the direction of pressing on the base (1);wherein the locking block (3) is movably installed on one side of the base (1) along the connection direction of the locking block (3) and the movable block (2), and the quick-assembly seat (4) is detachably connected in the dovetail groove; wherein the trigger assembly (5) comprises a tension rod (53) the one end of which is connected to the base (1) and penetrates the locking block (3), and a trigger (51) located on the side of the locking block (3) facing away from the base (1) and rotatably connected to the end of the tension rod (53);wherein the trigger (51) has a locking position and a release position during rotation, wherein the quick-mount seat (4) can be pressed into the dovetail groove from the front (1a) of the base (1) when the trigger (51) is in the release position, and the trigger (51) pushes the locking block (3) closer to the movable block (2) for movement when the trigger (51) is in the locking position, so that the locking block (3) and the movable block (2) cooperate to lock the quick-mount seat (4) in the dovetail groove.

Description

Technical area

[0001] The present invention relates to the technical field of photographic equipment and, in particular, to a quick-mounting mechanism. Background technology

[0002] The quick-mount mechanism of a conventional pan / tilt head includes a plate base, a quick-mount seat, and a trigger lock mechanism. The plate base is provided with a sliding groove, and the quick-mount seat is installed horizontally slidably on the sliding groove. When the quick-mount seat slides horizontally into place, the quick-mount seat is locked on the sliding groove using a trigger lock mechanism. When installing the quick-mount seat, the quick-mount seat can only slide horizontally into the sliding groove of the plate base, and the quick-mount seat cannot be quickly installed from top to bottom, resulting in a longer installation time for the quick-mount seat. For photographers, the lengthy assembly of the quick-mount seat may result in some important photographic images being missed, affecting the photography experience.

[0003] To facilitate the quick installation of the quick-mount seat on the plate base from top to bottom, some quick-mount mechanisms are equipped with a sliding block on the back of the plate base, with a locking block pivotally connected to one side of the sliding block. The trigger is connected to the side of the sliding block opposite the locking block and can drive the movable block to slide. The return spring is elastically arranged between the movable block and the plate base. The trigger has a locked state and a released state during rotation.When the trigger is in the locked state, the slide block moves to the trigger side, the return spring is compressed, and the slide block drives the locking block to lock the quick-mount seat in the slot; when the trigger is in the released state, the return spring drives the slide block and the locking block to move in the direction of releasing the quick-mount seat, and at this time, the quick-mount seat is released, and the quick-mount seat can be taken out from the slot of the plate base.

[0004] Although this type of quick-mount mechanism allows for quick installation of the quick-mount seat from top to bottom, the locking force exerted by the trigger must be transmitted to the locking block via the slide block when the trigger is locked, and then the quick-mount seat is pressed by the locking block and the plate base from both sides to achieve locking. Since one end of the locking block is pivotally connected to the slide block, a small fitting gap inevitably exists between the locking block and the slide block.When the trigger rotates from the released state to the locked state and the movement distance of the slide block is a constant value, the existence of this fitting gap causes the actual movement distance of the lock block during the movement and locking process to be smaller than the movement distance of the trigger, and the actual locking force exerted by the lock block on the quick-mount base is slightly smaller than the locking force exerted by the trigger, which affects the locking effect of the quick-mount base. In addition, for the horizontal alignment of the slide block on the back of the plate base, additional baffles and locking screws are required to limit the slide block on the plate base. Many parts must be installed, the overall structure is complex, and the production cost is high. Description of the invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the deficiencies of the poor locking effect and the complex locking structure of the existing quick-assembly mechanism which can enable quick installation from top to bottom, and thereby provide a quick-assembly mechanism.

[0006] In order to solve the above-mentioned technical problems, the technical solution of the present invention is as follows: A quick-mounting mechanism comprising a base, a movable block, a locking block, a quick-mounting seat, and a trigger assembly; wherein the movable block and the locking block are respectively located on opposite sides of the base, and the movable block and the locking block cooperate with each other on the front side of the base to form a dovetail groove, wherein a rotating shaft is mounted on the rear side of the base, and one end of the movable block is rotatably connected to the rotating shaft, wherein a torsion spring is wound around the rotating shaft, one end of the torsion spring abuts the base and the other end abuts the movable block, wherein the elastic force of the torsion spring drives the movable block to rotate in the direction of pressing the base;wherein the locking block is movably installed on one side of the base along the connecting direction of the locking block and the movable block, and the quick-mount seat is detachably connected in the dovetail groove; wherein the trigger assembly comprises a cocking rod, one end of which is connected to the base and penetrates the locking block, and a trigger located on the side of the locking block facing away from the base and rotatably connected to the end of the cocking rod;wherein the trigger has a locking position and a release position during rotation, wherein the quick-mount seat can be pushed into the dovetail groove from the front of the base when the trigger is in the release position, and the trigger pushes the locking block for movement closer to the movable block when the trigger is in the locking position so that the locking block and the movable block cooperate to lock the quick-mount seat in the dovetail groove.;

[0007] Furthermore, the movable block is provided with a movable block slope forming one groove side wall of the dovetail groove, and the locking block is provided with a locking block slope forming the other groove side wall of the dovetail groove; one side of the quick-mounting seat is provided with a first inclined surface that cooperates with the inclined surface of the movable block slope, and the other side of the quick-mounting seat is provided with a second inclined surface that cooperates with the inclined surface of the locking block slope.

[0008] Furthermore, the inclined surface of the movable block and the first inclined surface are in the overlapped state when the trigger is in the locking position.

[0009] Furthermore, one side of the movable block protrudes outward to facilitate pressing the push buckle of the movable block.

[0010] Furthermore, a threaded connection hole and a guide groove are provided on the side of the base facing the locking block, wherein one end of the tension rod is firmly connected to the threaded connection hole in the thread and the locking block is provided with a guide post which corresponds to the shape of the guide groove and is slidably connected in the guide groove.

[0011] Furthermore, the guide groove is provided with a return spring which is elastically supported between the bottom of the guide groove and the guide post, and when the trigger is in the release position, the elastic force of the return spring drives the locking block to move away from the moving direction of the movable block.

[0012] Furthermore, the trigger assembly further comprises a trigger shaft fixedly connected to the end of the cocking rod, and an end of the trigger connected to the trigger shaft is an eccentric block, wherein the eccentric block is rotatably connected to the trigger shaft; when the trigger is in a released state, the proximal end of the eccentric block abuts the locking block; when the trigger is in a locked state, the distal end of the eccentric block abuts the locking block.

[0013] Furthermore, the side of the locking block facing the trigger is further provided with a receiving groove, and the trigger assembly also includes a pressure block embedded in the receiving groove and encased on the outer circumference of the cocking rod; the pressure block is padded between the eccentric block of the trigger and the locking block.

[0014] Furthermore, at least two elastic washers are provided between the pressure block and the bottom of the receiving groove.

[0015] Furthermore, a rotary shaft hole is opened in the base, and both ends of the rotary shaft are fixed in the rotary shaft hole; the back of the base is provided with a mounting slot, the rotary shaft penetrating the mounting slot, and the back of the base is provided with a connecting hole in the part where the mounting slot is not provided, the connecting hole being threaded with a connecting screw for connecting to an external pan / tilt head.

[0016] The technical solution of the present invention has the following advantages: 1. The quick-mounting mechanism provided by the present invention includes a base, a movable block, a locking block, a quick-mounting seat, and a trigger assembly; the movable block and the locking block are respectively located on opposite sides of the base, the dovetail groove for locking the quick-mounting seat consists of a movable block, a locking block, and a base, and the base serves only as the bottom wall of the dovetail groove, the two opposite groove side walls of the dovetail groove are formed by a movable block and a locking block, respectively, and the movable block is rotatably connected to one side of the base via a rotary shaft and a torsion spring.Due to the rotatable combination design of the movable block, the quick-mount seat can be quickly installed into the dovetail groove by pushing down from top to bottom. When locking the quick-mount seat, the trigger is rotated, and the trigger pushes the locking block to move closer to the movable block. The locking block and the movable block cooperate with each other and can lock the quick-mount seat in the dovetail groove. With this locking method of the quick-mount seat, the locking force provided by the trigger only needs to push the locking block to move, and the movement stroke along the cocking rod when rotating the trigger from the release position to the locking position is the movement stroke of the locking block.The locking force can be fully applied to the quick-assembly seat through the locking block, which contributes to improving the locking effect of the quick-assembly seat; in addition, the overall structure is simple and there are few parts, which contributes to reducing the production cost of the quick-assembly mechanism. Brief description of the drawings

[0017] In order to more clearly illustrate the technical solutions in the specific embodiments or prior art of the present invention, the accompanying drawings are briefly presented below. These drawings must be used in describing the specific embodiments or prior art. It is obvious that the accompanying drawings in the following description illustrate some embodiments of the present invention, and that general technical personnel in the field, provided they do not perform creative work, can obtain other drawings based on the accompanying drawings. Fig. 1 is a schematic three-dimensional structural diagram of a quick-assembly mechanism in an embodiment of the present invention; Fig. 2 is a schematic structural diagram of the base and the quick-mount seat before assembly in an embodiment of the present invention; Fig. 3 is a schematic structural diagram of the back of the base in an embodiment of the present invention; Fig. 4 is an exploded view of the quick assembly mechanism in one embodiment of the present invention;

[0018] In the figures: 1. Base; 11. Rotary shaft hole; 12. Threaded connection hole; 13. Guide groove; 1a. Front side; 1b. Rear side; 2. Movable block; 21. Movable block inclined surface; 22. Push buckle; 3. Locking block; 31. Locking block inclined surface; 32. Guide post; 33. Receiving groove; 4. Quick assembly seat; 41. First inclined surface; 42. Second inclined surface; 5. Trigger assembly; 51. Trigger; 52. Trigger shaft; 53. Cocking rod; 54. Push block; 55. Elastic washer; 6. Return spring; 7. Rotary shaft; 8. Torsion spring; 9, Connecting screw. Description of the preferred embodiments

[0019] In the following, the technical solution of the present invention will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the description of the embodiments represents only a part of the embodiments of the present invention and not all of them. Based on the embodiments of the present invention, all other embodiments that general technical personnel in this field can obtain without creative effort fall within the scope of the present invention.

[0020] When describing the embodiment of the present invention, it is necessary to point out that an azimuth or positional relationship referring to terms such as "central," "top," "bottom," "left," "right," "vertical," "horizontal," "inside," "outside," and the like, has the azimuth or positional relationship based on the drawing. They are intended to facilitate and simplify the description of the present invention, rather than indicating or implying that the said device or component must have a particular orientation, be constructed, and operate in a particular orientation. Furthermore, the terms "first," "second," and "third" are used only for discriminatory purposes and should not be understood to indicate a relative meaning.

[0021] When describing the embodiments of the present invention, it is necessary to point out that the terms "assembling," "connecting," and "connecting" are to be understood in a broad sense unless expressly stated or limited otherwise. For example, it may be a fixed connection, a detachable connection, or a one-piece connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection via an intermediate medium, and it may be a connection within the two elements. For general technical personnel in the field, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.

[0022] A quick assembly mechanism, as in Fig.1-4, comprises a base 1, a movable block 2, a locking block 3, a quick-mounting seat 4, and a trigger assembly 5. Wherein the base 1 is a flat structure, the base 1 includes a front surface 1a and a rear surface 1b which are arranged opposite to each other, the movable block 2 and the locking block 3 are respectively located on the opposite sides of the base 1, the movable block 2 and the locking block 3 cooperate with each other on the front surface 1a of the base 1 to form a dovetail groove, a groove side wall of the movable groove is formed on the front surface 1a of the base 1, and the movable block 2 and the locking block 3 form the groove side wall of the dovetail groove.A rotary shaft 7 is mounted on the back 1b of the base 1, and one end of the movable block 2 is rotatably connected to the rotary shaft 7. A torsion spring 8 is wound around the rotary shaft 7. One end of the torsion spring 8 abuts the base 1 and the other end abuts the movable block 2. The elastic force of the torsion spring 8 drives the movable block 2 to rotate in the direction of pressing the base 1. The locking block 3 is movably installed on one side of the base 1 along the connecting direction of the locking block 3 and the movable block 2, and the quick-mounting seat 4 is detachably connected in the dovetail groove. The trigger assembly 5 comprises a tension rod 53, one end of which is connected to the base 1 and penetrates the locking block 3, and a trigger 51, which is located on the side of the locking block 3 facing away from the base 1 and is rotatably connected to the end of the tension rod 53.The trigger 51 has a locking position and a release position during rotation, the quick-mounting seat 4 from the front 1a of the base 1 can be pressed into the dovetail groove when the trigger 51 is in the release position, and the trigger 51 pushes the locking block 3 to move closer to the movable block 2 when the trigger 51 is in the locking position, so that the locking block 3 and the movable block 2 cooperate to lock the quick-mounting seat 4 in the dovetail groove.

[0023] In the present embodiment, the movable block 2 is provided with a movable block slope 21 forming one groove side wall of the dovetail groove, and the locking block 3 is provided with a locking block slope 31 forming the other groove side wall of the dovetail groove; one side of the quick-assembly seat 4 is provided with a first inclined surface 41 that cooperates with the inclined surface of the movable block slope 21, and the other side of the quick-assembly seat 4 is provided with a second inclined surface 42 that cooperates with the inclined surface of the locking block slope 31.During the locking operation of the quick-mounting seat 4, the trigger 51 drives the locking block 3 to move through the tension rod 53, and the locking block 3 pushes the first inclined surface 41 on the quick-mounting seat 4 downward through the locking block bevel 31 and cooperates with the movable block 2 to push the quick-mounting seat 4 downward onto the base 1. When the trigger 51 is in the locking position, the inclined surface of the movable block 21 and the first inclined surface 41 are in an overlapped state.

[0024] In the present embodiment, one side of the movable block 2 protrudes outward to facilitate pressing of the push buckle 22 of the movable block 2.

[0025] In the present embodiment, a threaded connection hole 12 and a guide groove 13 are provided on the side of the base 1 facing the locking block 3. One end of the tension rod 53 is threadably connected to the threaded connection hole 12, and the locking block 3 is provided with a guide post 32 that corresponds to the shape of the guide groove 13 and is slidably connected in the guide groove 13. There are two guide grooves 13 and two corresponding guide posts 32. The two guide grooves 13 are located on opposite sides of the threaded connection hole 12. Each guide groove 13 is provided with a return spring 6 that is elastically supported between the bottom of the guide groove 13 and the guide post 32. When the trigger 51 is in the release position, the elastic force of the return spring 6 urges the locking block 3 to move away from the moving direction of the movable block 2.

[0026] In the present embodiment, the trigger assembly 5 further comprises a trigger shaft 52 fixedly connected to the end of the tension rod 53, and one end of the trigger 51 connected to the trigger shaft 52 is an eccentric block, wherein the eccentric block is rotatably connected to the trigger shaft 52; when the trigger 51 is in a released state, the proximal end of the eccentric block abuts the locking block 3; when the trigger 51 is in a locked state, the distal end of the eccentric block abuts the locking block 3. The side of the locking block 3 facing the trigger 51 has a curved surface to facilitate the trigger 51 in pressing the locking block 3. The side of the locking block 3 facing the trigger 51 is provided with a receiving groove 33, wherein the receiving groove 33 is generally square and the bottom of the receiving groove 33 is flat.The trigger assembly 5 further includes a pressure block 54 embedded in the receiving groove 33 and fixed to the outer periphery of the cocking rod 53, the outer size of the pressure block 54 is the same as that of the receiving groove 33, and the pressure block 54 is cushioned between the eccentric block of the trigger 51 and the locking block 3 to facilitate the enlargement of the pressure-bearing area of ​​the locking block 3, so that the locking block 3 can better absorb the force.

[0027] In addition, three elastic washers are provided between the pressure block 54 and the bottom of the receiving groove 33, and the three elastic washers can utilize their own elasticity and compressibility to effectively eliminate the contact surface gap between the pressure block 54 and the locking block 3, so that the force of the pressure block 54 can be transmitted to the locking block 3 more smoothly.

[0028] In the present embodiment, a rotary shaft hole 11 is opened in the base 1, and both ends of the rotary shaft 7 are fixed in the rotary shaft hole 11. The back surface 1b of the base 1 is provided with a mounting slot, wherein the rotary shaft 7 penetrates the mounting slot, and the end connected to the movable block 2 and the rotary shaft 7 just fills the mounting slot. The back surface 1b of the base 1 is provided with a connecting hole in the part where the mounting slot is not provided, and the connecting hole is threadedly connected to a connecting screw 9 for connecting to an external pan / tilt head. In this construction, since the structure of the base 1 is simple, there is no need to construct complex structures such as sliding blocks within the base 1.The back 1b of the base 1 has a large structural design space, so it is convenient to arrange the connecting screw 9 for connecting to an external pan / tilt head on the back 1b of the base 1, which can further enrich the application scenarios of the quick mounting mechanism.

[0029] The assembly process of this quick-assembly mechanism is as follows: When installing the quick-assembly base 4, the trigger 51 is in an open state, and the quick-assembly seat 4 can be installed by pushing down from top to bottom. When the quick-assembly seat 4 presses on the movable block 2 and the movable block 2 rotates downward at a certain angle along the rotating shaft 7, the movable block 2 can evade the quick-assembly seat 4, and the quick-assembly seat 4 can be directly pressed onto the front surface 1a of the base 1. At this time, the movable block 2 is released from the pressure of the quick-assembly seat 4.The movable block 2 rotates upward along the rotating shaft 7 under the action of the torsion spring 8, and a part of the movable block 2 rotates toward the top of the quick-mounting seat 4; then, the trigger 51 is pushed downward, and the locking block 3 moves toward the movable block 2 under the action of the tension rod 53. After the inclined surface 31 of the locking block contacts the second inclined surface 42 of the quick-mounting seat 4, the quick-mounting seat 4 is moved in a direction closer to the movable block 2 until the first inclined surface 41 of the quick-mounting seat 4 is firmly pressed against the inclined surface 21 of the movable block. At this time, the locking block 3 can press the quick-mounting seat 4.At this time, if the movable block 2 is further pushed down, the movable block 2 cannot be pushed down because the inclined surface 21 of the movable block 2 and the first inclined surface 41 of the quick-mounting seat 4 are in an overlapped state; when the quick-mounting seat 4 is released, only the trigger 51 needs to be released, and the locking block 3 moves away from the movable block 2 under the action of the return spring 6. When the movable block 2 is pushed down, the inclined surface 21 of the movable block is separated from the first inclined surface 41 of the quick-mounting seat 4. At this time, the quick-mounting seat 4 can be taken out from the bottom up.

[0030] The quick assembly mechanism provided by the present invention arranges a movable block 2 and a locking block 3 on opposite sides of the base 1, the dovetail groove for locking the quick assembly seat 4 consists of a movable block 2, a locking block 3 and a base 1 and the base 1 serves only as the bottom wall of the dovetail groove, the two opposite groove side walls of the dovetail groove are formed by a movable block 2 and a locking block 3 respectively and the movable block 2 is rotatably connected to one side of the base 1 via a rotary shaft 7 and a torsion spring 8.Due to the rotatable combination design of the movable block 2, the quick-mounting seat 4 can be quickly installed into the dovetail groove by pushing down from top to bottom. When the quick-mounting seat 4 is locked, the trigger 51 is rotated, and the trigger 51 pushes the locking block 3 to move closer to the movable block 2. The locking block 3 and the movable block 2 cooperate with each other and can lock the quick-mounting seat 4 in the dovetail groove. With this locking method of the quick-mounting seat 4, the locking force provided by the trigger 51 only needs to push the locking block 3 to move, and the movement stroke along the cocking rod 53 when the trigger 51 rotates from the release position to the locking position is the movement stroke of the locking block 3.The locking force can be fully applied to the quick-assembly seat 4 through the locking block 3, which is beneficial to improving the locking effect of the quick-assembly seat 4; moreover, the overall structure is simple and there are few parts, which contributes to reducing the production cost of the quick-assembly mechanism.

[0031] Of course, the above-mentioned embodiments serve only as examples for clear explanation and are not intended to limit the embodiments. Other forms of changes or modifications are also possible for general technical personnel in this field based on the above description. An exhaustive list of all embodiments is neither necessary nor possible. The obvious changes or modifications derived therefrom still fall within the scope of the present invention.

Claims

[1] Quick assembly mechanism, characterized bythat it comprises a base (1), a movable block (2), a locking block (3), a quick-mounting seat (4) and a trigger assembly (5); wherein the movable block (2) and the locking block (3) are each located on opposite sides of the base (1), and the movable block (2) and the locking block (3) are matched on the front side (1a) of the base (1) to form a dovetail groove, wherein a rotary shaft (7) is mounted on the back side (1b) of the base (1) and one end of the movable block (2) is rotatably connected to the rotary shaft (7), wherein a torsion spring (8) is wound around the rotary shaft (7), one end of the torsion spring (8) abuts the base (1) and the other end abuts the movable block (2), wherein the elastic force of the torsion spring (8) drives the movable block (2) to rotate in the direction of pressing on the base (1);wherein the locking block (3) is movably installed on one side of the base (1) along the connecting direction of the locking block (3) and the movable block (2), and the quick-mounting seat (4) is detachably connected in the dovetail groove; wherein the trigger assembly (5) comprises a tension rod (53), one end of which is connected to the base (1) and penetrates the locking block (3), and a trigger (51) which is located on the side of the locking block (3) facing away from the base (1) and is rotatably connected to the end of the tension rod (53);wherein the trigger (51) has a locking position and a release position during rotation, wherein the quick-mounting seat (4) can be pushed into the dovetail groove from the front (1a) of the base (1) when the trigger (51) is in the release position, and the trigger (51) pushes the locking block (3) to move closer to the movable block (2) when the trigger (51) is in the locking position, so that the locking block (3) and the movable block (2) cooperate to lock the quick-mounting seat (4) in the dovetail groove.; [2] Quick assembly mechanism according to claim 1, characterized bythat the movable block (2) is provided with a movable block bevel (21) which forms one groove side wall of the dovetail groove, and that the locking block (3) is provided with a locking block bevel (31) which forms the other groove side wall of the dovetail groove; one side of the quick-assembly seat (4) is provided with a first inclined surface (41) which cooperates with the inclined surface of the movable block bevel (21), and the other side of the quick-assembly seat (4) is provided with a second inclined surface (42) which cooperates with the inclined surface of the locking block bevel (31). [3] Quick assembly mechanism according to claim 2, characterized by that the inclined surface (21) of the movable block and the first inclined surface (41) are in the overlapped state when the trigger (51) is in the locking position. [4] Quick assembly mechanism according to claim 1, characterized bythat one side of the movable block (2) protrudes outwards to facilitate pressing the pressure buckle (22) of the movable block (2). [5] Quick assembly mechanism according to claim 1, characterized by that a threaded connection hole (12) and a guide groove (13) are provided on the side of the base (1) facing the locking block (3), wherein one end of the tension rod (53) is firmly connected in the thread to the threaded connection hole (12) and the locking block (3) is provided with a guide post (32) which corresponds to the shape of the guide groove (13) and is slidably connected in the guide groove (13). [6] Quick assembly mechanism according to claim 5, characterized bythat the guide groove (13) is provided with a return spring (6) which is elastically supported between the bottom of the guide groove (13) and the guide post (32), and when the trigger (51) is in the release position, the elastic force of the return spring (6) urges the locking block (3) to move away from the direction of movement of the movable block (2). [7] Quick assembly mechanism according to claim 6, characterized byin that the trigger assembly (5) further comprises a trigger shaft (52) which is fixedly connected to the end of the tension rod (53), and an end of the trigger (51) connected to the trigger shaft (52) is an eccentric block, wherein the eccentric block is rotatably connected to the trigger shaft (52); when the trigger (51) is in a released state, the proximal end of the eccentric block abuts the locking block (3); when the trigger (51) is in a locked state, the distal end of the eccentric block abuts the locking block (3). [8] Quick assembly mechanism according to claim 7, characterized bythat the side of the locking block (3) facing the trigger (51) is further provided with a receiving groove (33) and the trigger assembly (5) also comprises a pressure block (54) which is embedded in the receiving groove (33) and encased on the outer circumference of the tension rod (53); wherein the pressure block (54) is padded between the eccentric block of the trigger (51) and the locking block (3). [9] Quick assembly mechanism according to claim 8, characterized by that at least two elastic washers (55) are provided between the pressure block (54) and the bottom of the receiving groove (33). [10] Quick assembly mechanism according to claim 1, characterized bythat a rotary shaft hole (11) is opened in the base (1) and both ends of the rotary shaft (7) are fixed in the rotary shaft hole (11); the back (1b) of the base (1) is provided with a mounting slot, wherein the rotary shaft (7) penetrates the mounting slot, and the back (1b) of the base (1) is provided with a connecting hole in the part where the mounting slot is not provided, wherein the connecting hole is connected in the thread with a connecting screw (9) for connection to an external pan / tilt head.

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