Photographic rocker arm convenient to assemble

Abstract

The utility model discloses a photographic rocker arm convenient to assemble. The photographic rocker arm comprises a moving frame, a supporting rod, a fast-assembling mechanism, a rotating seat, a rotating seat, a rocker arm body and a cradle head frame. The quick-mounting mechanism comprises an inner cavity and a connecting column which are arranged on the supporting rod; an inner ring is arranged on the inner wall of the inner cavity; the inner cavity is internally connected with a jacking moving block in a sliding manner; a first arc groove is formed in the side part of the jacking moving block; a plurality of first balls are connected below the inner ring in a rolling manner; a plurality of ball grooves are formed in the upper portion of the jacking moving block, and second balls are arranged in the ball grooves; the upper end face of the inner ring is connected with a first spring surrounding the outer side of the jacking moving block. A pressing block is arranged below the jacking moving block; a second arc groove is formed in the side part of the connecting column; and a connecting groove is formed in the top end of the jacking moving block. The rocker arm and the supporting rod can be rapidly connected, the overall installation time is shortened, and the installation efficiency is improved.

Description

Technical Field

[0001] This utility model relates to a camera crane that is easy to assemble, and belongs to the field of camera crane technology. Background Technology

[0002] In an era of rapid advancements in television technology, crane camera technology plays an indispensable role in variety shows, sports programs, and talk shows. It greatly enriches the visual language of television programs, increases the dynamism and diversity of the footage, adds a grand scale and a sense of depth to the images, giving viewers an immersive experience. Moreover, due to the unique advantage of its long arm, crane cameras can often capture shots that other cameras cannot. For example, Chinese utility model patent CN208834075U discloses a camera crane, specifically including a support rod, a rotating device, a main crane, a secondary crane, a first connecting arm, a second connecting arm, a first gimbal, a counterweight, and an adjusting screw. The support rod is hinged to the inner sides of both ends of the main crane via the rotating device, forming a lever structure. The main crane, the first connecting arm, the secondary crane, and the second connecting arm are hinged sequentially, with the hinge points located at the four vertices of a parallelogram. The first gimbal is fixedly connected to the first connecting arm. The counterweight is mounted on the adjusting screw, which is movably mounted at the end of the main crane away from the first gimbal. Since camera cranes typically need to be disassembled into parts and transported to the new location before reassembly when changing shooting locations, this design has too many crane parts, requiring numerous bolts for installation, which is labor-intensive and time-consuming, impacting shooting progress. Utility Model Content

[0003] The purpose of this invention is to provide a camera jib arm that is easy to assemble. This invention allows for quick connection between the jib arm and the support rod, reducing overall installation time and improving installation efficiency.

[0004] The technical solution of this utility model: A camera jib arm that is easy to assemble includes a movable frame, a support rod connected to the top of the movable frame, a quick-release mechanism on the support rod, a rotating seat connected to the other end of the quick-release mechanism, a jib arm connected to the rotating seat, and a gimbal frame connected to the front end of the jib arm; the quick-release mechanism includes an inner cavity disposed on the support rod and a connecting column at the lower end of the rotating seat, the upper end of the inner cavity being conical; an inner ring is provided on the inner wall of the inner cavity; a pressing moving block is slidably connected inside the inner cavity, the upper end of the pressing moving block having a conical portion and fitting with the upper end of the inner cavity; the side of the pressing moving block... The device includes a first arc groove; multiple first balls are rolled below the inner ring, with the first balls located on the side of the arc groove; multiple ball grooves are provided above the clamping moving block, with second balls inside the ball grooves; a first spring is connected to the upper end face of the inner ring, surrounding the outside of the clamping moving block, and the other end of the first spring is connected to a conical part; a pressing block is provided below the clamping moving block, with a ramp at the upper end of the pressing block, which abuts against the first balls; a second arc groove is provided on the side of the connecting column; and a connecting groove is provided at the top of the clamping moving block, communicating with the ball grooves.

[0005] The aforementioned easy-to-assemble camera jib arm has a second spring connected below the pressing and moving block, and the other end of the second spring is connected to the pressing block.

[0006] The aforementioned easy-to-assemble camera jib arm has a pressing groove on the side of the support rod, which is located on the side of the pressing block.

[0007] The aforementioned easy-to-assemble camera jib includes a main jib, a first auxiliary jib slidably connected to the front end of the main jib, a second auxiliary jib slidably connected to the front end of the first auxiliary jib, and the front end of the second auxiliary jib connected to a gimbal. A third auxiliary jib is connected to the rear end of the main jib, and a first protrusion is provided on the third auxiliary jib. A first groove is provided at the rear end of the main jib, and the first groove mates with the first protrusion. A first connecting hole is provided through the rear end of the main jib, and the first connecting hole communicates with the first groove. A second connecting hole is provided on the side of the first protrusion, and the second connecting hole mates with the first connecting hole.

[0008] The aforementioned easy-to-assemble camera jib arm has a third connecting hole on the side of the main jib arm; the first auxiliary jib arm has multiple fourth connecting holes on its side; and the second auxiliary jib arm has multiple fifth connecting holes on its side.

[0009] The aforementioned easy-to-assemble camera jib arm has a main jib arm with a column connected to its upper part, and a roller rotatably connected to the top of the column; a first connecting lug is provided at the upper front end of the first auxiliary jib arm; a second connecting lug is provided at the upper front end of the second auxiliary jib arm; a third connecting lug is provided at the upper rear end of the third auxiliary jib arm; a cable is connected between the first connecting lug, the second connecting lug, and the third connecting lug, and the cable passes over the roller.

[0010] The aforementioned easy-to-assemble camera jib arm has a second protrusion on the movable frame; a second groove at the lower end of the support rod; a sixth connecting hole penetrating through the side of the second protrusion; and a seventh connecting hole penetrating through the support rod, which communicates with the second groove.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. In this invention, when connecting the support rod and the rocker arm, pressing the pressing block upwards causes the inclined portion of the pressing block to abut against the second ball bearing, causing the second ball bearing to roll into the first arc groove. This moves the tightening moving block downwards. Then, the connecting column of the rotating seat is inserted into the connecting groove of the tightening moving block. Releasing the pressing block allows the tightening moving block to reset under the action of the first spring, retracting the first ball bearing. The tightening moving block then moves upwards, causing the second ball bearing in the ball bearing groove to abut against the tapered sidewall at the upper end of the inner cavity, causing the second ball bearing to move inwards. This results in a portion of the second ball bearing being engaged in the second arc groove, thus limiting the connection column and completing the installation. In summary, the installer only needs to press the pressing block upwards, insert the connecting column of the rotating seat into the inner cavity, and then release the pressing block to complete the installation, simplifying the installation process and saving installation time.

[0013] 2. In this invention, the overall length of the rocker arm is adjustable. After sliding the first and second rocker arms outward to a suitable length, align the fourth connecting hole at the corresponding position of the first rocker arm with the third connecting hole of the main rocker arm and insert a pin. Align the fifth connecting hole at the corresponding position of the second rocker arm with the fourth connecting hole at the foremost end of the first rocker arm and insert a pin, thus completing the length adjustment and fixing of the rocker arm. Then, insert the first protrusion of the third rocker arm into the first groove and pass a pin from the first connecting hole into the second connecting hole to connect and fix the main rocker arm and the third rocker arm. Connecting a cable between the first, second, and third connecting ears further enhances the stability of the connection. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the clamping moving block.

[0017] The labels in the attached diagram are as follows: 1-moving frame, 2-support rod, 3-quick-release mechanism, 4-rotating seat, 5-rocker arm, 6-gimbal frame, 7-inner cavity, 8-connecting column, 9-inner ring, 10-pressing moving block, 11-first arc groove, 12-first ball bearing, 13-ball bearing groove, 14-second ball bearing, 15-first spring, 16-pressing block, 17-slope, 18-second arc groove, 19-second spring, 20-pressing groove, 21-main rocker arm, 22-first auxiliary rocker arm, 23-... - Second rocker arm, 24- Third rocker arm, 25- First protrusion, 26- First groove, 27- First connecting hole, 28- Second connecting hole, 29- Third connecting hole, 30- Fourth connecting hole, 31- Fifth connecting hole, 32- Column, 33- Roller, 34- First connecting ear, 35- Second connecting ear, 36- Third connecting ear, 37- Cable, 38- Second protrusion, 39- Second groove, 40- Sixth connecting hole, 41- Seventh connecting hole, 42- Connecting groove. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0019] Example: A camera jib arm that is easy to assemble, configured as follows Figure 1-3 As shown, it includes a movable frame 1, a support rod 2 connected above the movable frame 1, a quick-release mechanism 3 mounted on the support rod 2, a rotating seat 4 connected to the other end of the quick-release mechanism 3, a rocker arm 5 connected to the rotating seat 4, and a gimbal frame 6 connected to the front end of the rocker arm 5; as shown Figure 2 As shown, the quick-assembly mechanism 3 includes an inner cavity 7 mounted on the support rod 2 and a connecting column 8 at the lower end of the rotating seat 4. The upper end of the inner cavity 7 is conical. An inner ring 9 is provided on the inner wall of the inner cavity 7. A pressing moving block 10 is slidably connected inside the inner cavity 7, such as... Figure 3As shown, the upper end of the clamping moving block 10 has a tapered portion that fits into the upper end of the inner cavity 7; the side of the clamping moving block 10 is provided with a first arc groove 11; a plurality of first balls 12 are rotatably connected below the inner ring 9, and the first balls 12 are located on the side of the arc groove; a plurality of ball grooves 13 are provided above the clamping moving block 10, and a second ball 14 is provided in the ball grooves 13; a first spring 15 is connected to the upper end face of the inner ring 9 and surrounds the outside of the clamping moving block 10, and the other end of the first spring 15 is connected to the tapered portion; a pressing block 16 is provided below the clamping moving block 10, and the upper end of the pressing block 16 has a ramp portion 17, which abuts against the first ball 12; a second arc groove 18 is provided on the side of the connecting column 8; a connecting groove 42 is provided at the top of the clamping moving block 10, and the connecting groove 42 communicates with the ball grooves 13. A second spring 19 is connected below the pressing moving block 10, and the other end of the second spring 19 is connected to the pressing block 16. The second spring 19 is used to release the pressing block 16 and allow it to return to its original position, so that it no longer abuts against the first ball bearing 12. The support rod 2 has a pressing groove 20 on its side, which is located on the side of the pressing block 16. Figure 2 As shown, the movable frame 1 is provided with a second protrusion 38; the lower end of the support rod 2 is provided with a second groove 39; a sixth connecting hole 40 is provided through the side of the second protrusion 38; a seventh connecting hole 41 is provided through the support rod 2, and the seventh connecting hole 41 communicates with the second groove 39. By inserting the second protrusion 38 into the second groove 39, and then inserting the pin through the seventh connecting hole 41 into the sixth connecting hole 40, the installation and fixation between the support rod 2 and the movable frame 1 can be completed.

[0020] Preferably, such as Figure 1As shown, the rocker arm 5 includes a main rocker arm 21, a first auxiliary rocker arm 22 slidably connected to the front end of the main rocker arm 21, a second auxiliary rocker arm 23 slidably connected to the front end of the first auxiliary rocker arm 22, and the front end of the second auxiliary rocker arm 23 connected to the gimbal frame 6; a third auxiliary rocker arm 24 is connected to the rear end of the main rocker arm 21, and a first protrusion 25 is provided on the third auxiliary rocker arm 24; a first groove 26 is provided at the rear end of the main rocker arm 21, and the first groove 26 cooperates with the first protrusion 25; a first connecting hole 27 is provided through the rear end of the main rocker arm 21, and the first connecting hole 27 communicates with the first groove 26; a second connecting hole 28 is provided on the side of the first protrusion 25, and the second connecting hole 28 cooperates with the first connecting hole 27. A third connecting hole 29 is provided on the side of the main rocker arm 21; a plurality of fourth connecting holes 30 are provided linearly on the side of the first auxiliary rocker arm 22; and a plurality of fifth connecting holes 31 are provided linearly on the side of the second auxiliary rocker arm 23. The main rocker arm 21 is connected to a column 32 at its upper part, and a roller 33 is rotatably connected to the top of the column 32. The first auxiliary rocker arm 22 has a first connecting ear 34 at its upper front end. The second auxiliary rocker arm 23 has a second connecting ear 35 at its upper front end. The third auxiliary rocker arm 24 has a third connecting ear 36 at its upper rear end. A cable 37 is connected between the first connecting ear 34, the second connecting ear 35, and the third connecting ear 36, and the cable 37 passes over the roller 33. The overall length of the rocker arm 5 can be adjusted. After sliding the first auxiliary rocker arm 22 and the second auxiliary rocker arm 23 outward to a suitable length, align the fourth connecting hole 30 at the corresponding position of the first auxiliary rocker arm 22 with the third connecting hole 29 of the main rocker arm 21 and insert a pin. Align the fifth connecting hole at the corresponding position of the second auxiliary rocker arm 23 with the fourth connecting hole 30 at the very front of the first auxiliary rocker arm 22 and insert a pin to complete the length adjustment and fixation of the rocker arm 5. Next, the first protrusion 25 of the third auxiliary rocker arm 24 is inserted into the first groove 26, and the pin is passed from the first connecting hole 27 into the second connecting hole 28 to connect and fix the main rocker arm 21 and the third auxiliary rocker arm 24. The connection stability is further improved by connecting the cable 37 between the first connecting ear 34, the second connecting ear 35 and the third connecting ear 36.

[0021] Working principle:

[0022] Install the support rod 2 onto the movable frame 1, and then connect the rocker arm 5 to the upper end of the support rod 2 via the rotating seat 4. When the support rod 2 and the rocker arm 5 are connected, insert your hand into the pressing groove 20 and press the pressing block 16 upwards. The slope 17 of the pressing block 16 abuts against the second ball 14, causing the second ball 14 to roll into the first arc groove 11, thereby causing the pressing moving block 10 to move downwards. Then, insert the connecting post 8 of the rotating seat 4 into the connecting groove of the pressing moving block 10, release the pressing block 16, and under the action of the first spring 15, the pressing moving block 10 is reset, the first ball 12 is retracted, and the pressing moving block 10 moves upwards. The second ball 14 in the ball groove 13 abuts against the conical sidewall at the upper end of the inner cavity 7, causing the second ball 14 to move inwards, thereby causing a part of the second ball 14 to be stuck in the second arc groove 18, thereby limiting the connecting post 8 and completing the installation.

Claims

1. A camera jib arm that is easy to assemble, comprising a movable frame (1), a support rod (2) connected above the movable frame (1), a quick-release mechanism (3) provided on the support rod (2), a rotating seat (4) connected to the other end of the quick-release mechanism (3), a jib arm (5) connected to the rotating seat (4), and a gimbal frame (6) connected to the front end of the jib arm (5); characterized in that: The quick-assembly mechanism (3) includes an inner cavity (7) on the support rod (2) and a connecting column (8) at the lower end of the rotating seat (4). The upper end of the inner cavity (7) is conical. An inner ring (9) is provided on the inner wall of the inner cavity (7). A pressing moving block (10) is slidably connected inside the inner cavity (7). The upper end of the pressing moving block (10) has a conical part and fits with the upper end of the inner cavity (7). A first arc groove (11) is provided on the side of the pressing moving block (10). A plurality of first balls (12) are slidably connected below the inner ring (9). The first balls (12) are located on the side of the arc groove. A plurality of first balls (12) are provided above the pressing moving block (10). A ball groove (13) is provided in which a second ball (14) is provided; the upper end face of the inner ring (9) is connected to a first spring (15) that surrounds the outside of the pressing moving block (10), and the other end of the first spring (15) is connected to the conical part; a pressing block (16) is provided below the pressing moving block (10), and the upper end of the pressing block (16) has a ramp (17), which abuts against the first ball (12); a second arc groove (18) is provided on the side of the connecting column (8); a connecting groove (42) is provided at the top of the pressing moving block (10), and the connecting groove (42) communicates with the ball groove (13).

2. The easily assembled camera crane according to claim 1, characterized in that: A second spring (19) is connected below the pressing moving block (10), and the other end of the second spring (19) is connected to the pressing block (16).

3. The easily assembled camera crane according to claim 1, characterized in that: The support rod (2) has a pressing groove (20) on its side, and the pressing groove (20) is located on the side of the pressing block (16).

4. The easily assembled camera crane according to claim 1, characterized in that: The rocker arm (5) includes a main rocker arm (21), a first auxiliary rocker arm (22) is slidably connected to the front end of the main rocker arm (21), a second auxiliary rocker arm (23) is slidably connected to the front end of the first auxiliary rocker arm (22), and the front end of the second auxiliary rocker arm (23) is connected to the gimbal frame (6); a third auxiliary rocker arm (24) is connected to the rear end of the main rocker arm (21), and a first protrusion (25) is provided on the third auxiliary rocker arm (24); a first groove (26) is provided at the rear end of the main rocker arm (21), and the first groove (26) cooperates with the first protrusion (25); a first connecting hole (27) is provided through the rear end of the main rocker arm (21), and the first connecting hole (27) communicates with the first groove (26); a second connecting hole (28) is provided on the side of the first protrusion (25), and the second connecting hole (28) cooperates with the first connecting hole (27).

5. The easily assembled camera crane according to claim 4, characterized in that: The main rocker arm (21) has a third connecting hole (29) on its side; the first auxiliary rocker arm (22) has multiple fourth connecting holes (30) on its side; and the second auxiliary rocker arm (23) has multiple fifth connecting holes (31) on its side.

6. The easily assembled camera crane according to claim 4, characterized in that: The main rocker arm (21) is connected to a column (32) at its upper part, and a roller (33) is rotatably connected to the top of the column (32); the first auxiliary rocker arm (22) is provided with a first connecting ear (34) at its upper front end; the second auxiliary rocker arm (23) is provided with a second connecting ear (35) at its upper front end; the third auxiliary rocker arm (24) is provided with a third connecting ear (36) at its upper rear end; a cable (37) is connected between the first connecting ear (34), the second connecting ear (35) and the third connecting ear (36), and the cable (37) passes over the roller (33).

7. The easily assembled camera crane according to claim 1, characterized in that: The movable frame (1) is provided with a second protrusion (38); the lower end of the support rod (2) is provided with a second groove (39); the side of the second protrusion (38) is provided with a sixth connecting hole (40); the support rod (2) is provided with a seventh connecting hole (41), and the seventh connecting hole (41) communicates with the second groove (39).

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