Photographic equipment connecting device

Abstract

The invention discloses a photographic equipment connecting device which comprises a first connecting assembly, a second connecting assembly and a third connecting assembly. The connecting shaft is arranged at one end of the first connecting assembly, a first communicating hole communicating with the first flow channel is further formed in the end, away from the first connecting assembly, of the connecting shaft, and a second communicating hole communicating with the first communicating hole is further formed in the side wall of the connecting shaft; a connecting hole is formed in one end of the second connecting assembly, the connecting shaft is connected with the connecting hole in a sleeved mode, and a second flow channel is formed in the second connecting assembly and communicates with the second communicating hole; the fastening adjusting assembly comprises a hydraulic push rod located in the first communicating hole and an adjusting piece connected with the hydraulic push rod in an abutting mode. The adjusting piece is arranged at the end, away from the first connecting assembly, of the connecting shaft and used for pushing the push rod to move along the first communicating hole, and synchronous locking and synchronous unlocking of the movable joints at the ends of the two connecting assemblies are achieved through hydraulic transmission.

Description

Technical Field

[0001] The invention relates to the field of photographic equipment, and in particular to a photographic equipment connecting device. Background Art

[0002] With the progress of modern life, photography has become an indispensable part of people's lives. Photographic equipment includes photographic equipment, tripods, etc. The tripod is set up under the photographic equipment to support it. In some shooting scenes, auxiliary photographic equipment such as fill lights, monitors or mobile phones may be needed to assist in photography, or when other photographic equipment, mobile phones, fill lights and other photographic equipment need to be set up directly at the shooting position, a connecting device is required for connection.

[0003] Such existing connection devices are generally movable joint synchronization mechanisms, which include two mounting arms, each of which has a ball head seat at one end, and a ball head member connected to the photographic equipment is arranged in the ball head seat and can rotate in the ball head seat. The ball head seat is also provided with a locking screw, which is used to adjust the tightness of the connection between the ball head seat and the ball head member, and can fix the ball head member in the ball head seat and maintain a set posture. As a result, the ball head member is locked, and the photographic equipment connected thereto is also completely fixed.

[0004] However, the locking states of the two ball heads need to be adjusted in steps and cannot be locked or unlocked synchronously, which makes the use more complicated and inconvenient. Summary of the invention

[0005] The main purpose of the present invention is to provide a photographic equipment connection device, aiming to provide a photographic equipment connection device to improve the control convenience during the adjustment of the mounting arm.

[0006] To achieve the above object, the present invention provides a photographic equipment connection device, comprising:

[0007] A first connecting component having a first flow channel disposed therein;

[0008] A connecting shaft is provided at one end of the first connecting assembly, and an end of the connecting shaft away from the first connecting assembly is further provided with a first connecting hole communicating with the first flow channel, and a side wall of the connecting shaft is further provided with a second connecting hole communicating with the first connecting hole;

[0009] A second connecting component, one end of which is provided with a connecting hole, the connecting shaft is sleeved with the connecting hole, the second connecting component is provided with a second flow channel inside, and the second flow channel is communicated with the second communicating hole;

[0010] The tightening adjustment component includes a hydraulic push rod located in the first connecting hole, and an adjustment member connected to the hydraulic push rod; the adjustment member is arranged at the end of the connecting shaft away from the first connecting component, and is used to push the push rod to move along the first connecting hole.

[0011] In some embodiments, the section of the connecting shaft located between the second connecting assembly and the adjusting member is a first connecting section, and the first connecting section is provided with an external thread;

[0012] The tightening and adjusting assembly further comprises a tightening nut matched with the first connecting section, and the tightening nut abuts against the second connecting assembly, so that the first connecting assembly and the second connecting assembly can be abutted and locked.

[0013] In some embodiments, the section where the connecting shaft is connected to the adjusting member is a second connecting section, and the second connecting section is threadedly connected to the adjusting member.

[0014] In some embodiments, the outer diameter of the first connecting segment is greater than the outer diameter of the second connecting segment.

[0015] In some embodiments, the adjusting member includes an adjusting nut threadedly connected to the second connecting section; or, the adjusting member includes an adjusting screw threadedly connected to the first connecting hole.

[0016] In some embodiments, the first connecting hole is a stepped hole, the hydraulic push rod is located in a section with a larger hole diameter, and the tightening adjustment assembly further includes an elastic member located in the first connecting hole and abutting against the hydraulic push rod.

[0017] In some embodiments, the photographic equipment connection device further comprises:

[0018] A first ball head seat, provided at one end of the first connecting component away from the connecting shaft;

[0019] A first abutment member is disposed in the first ball head seat and is slidably connected to the first flow channel, one end of the first abutment member is used to abut against a first ball head adapted to the first ball head seat;

[0020] A second ball head seat, arranged at an end of the second connecting component away from the connecting shaft;

[0021] The second abutment member is disposed in the second ball head seat and is slidably connected to the second flow channel. One end of the second abutment member is used for abutting against a second ball head matched with the second ball head seat.

[0022] In some embodiments, the first connecting component includes a first mounting arm connected to the connecting shaft, and a first mounting seat arranged at the free end of the first mounting arm, the first flow channel is constructed in the first mounting arm and the first mounting seat, and the first abutment member is slidably connected to the first mounting seat.

[0023] In some embodiments, the second connecting component includes a second mounting arm connected to the connecting shaft, and a second mounting seat arranged at the free end of the second mounting arm, the second flow channel is constructed in the second mounting arm and the second mounting seat, and the second abutment member is slidably connected to the second mounting seat.

[0024] In some embodiments, an inner diameter of a section of the first flow channel located in the first mounting seat is larger than an inner diameter of a section of the first connecting hole adapted to the hydraulic push rod.

[0025] In some embodiments, a first toothed disc and a second toothed disc that can mesh with each other are further provided between the first connecting component and the second connecting component; the first toothed disc is provided on the first connecting component, and the second toothed disc is provided on the second connecting component, and the first toothed disc and the second toothed disc are arranged concentrically with the connecting shaft.

[0026] The present application provides a first connecting component and a second connecting component that can rotate relatively, and provides a movable joint at the end of each connecting component, and connects photographic equipment through the movable joint. At the same time, a first flow channel and a second flow channel connected to each movable joint are provided, as well as a connecting shaft connected to the first flow channel and the second flow channel, and a hydraulic push rod is provided in the connecting shaft. The driving adjustment member can push the hydraulic push rod in the connecting shaft to push the medium in the first flow channel and the second flow channel toward the abutting member in the movable joint, so that the abutting member presses the movable joint to achieve locking of the movable joint, so that the movable joint cannot rotate, and the locking of the movable joint is achieved, and the operation is flexible and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of an embodiment of a photographic equipment connecting device of the present invention;

[0028] Figure 2 An exploded view of an embodiment of a photographic equipment connection device of the present invention;

[0029] Figure 3 It is a structural schematic diagram of the photographic equipment connection device of the present invention from one viewing angle;

[0030] Figure 4 for Figure 3 Schematic diagram of the cross section at AA;

[0031] Figure 5 It is a partial structural schematic diagram of another embodiment of the photographic equipment connecting device of the present invention.

[0032] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0033] The scheme in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is only a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0035] It should also be noted that when an element is referred to as being "fixed on" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0036] In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0037] Reference Figures 1 to 4 The present invention provides a photographic equipment connection device, comprising:

[0038] The first connecting component 10 has a first flow channel 14 disposed therein;

[0039] A connecting shaft 30 is provided at one end of the first connecting assembly 10. The end of the connecting shaft 30 away from the first connecting assembly 10 is further provided with a first connecting hole 31 communicating with the first flow channel 14. The side wall of the connecting shaft 30 is further provided with a second connecting hole 32 communicating with the first connecting hole 31.

[0040] The second connecting component 20 has a connecting hole 211 at one end, the connecting shaft 30 is sleeved with the connecting hole 211, and a second flow channel 24 is provided inside the second connecting component 20, and the second flow channel 24 is communicated with the second communicating hole 32;

[0041] The tightening adjustment assembly includes a hydraulic push rod 43 located in the first connecting hole 31, and an adjustment member 42 connected to the hydraulic push rod 43; the adjustment member 42 is arranged at the end of the connecting shaft 30 away from the first connecting assembly 10, and is used to push the push rod to move along the first connecting hole 31.

[0042] In this embodiment, the first connecting assembly 10 and the second connecting assembly 20 are used to connect two photographic equipment, for example, one of them is connected to a tripod and the other is connected to a camera. Specifically, movable joints locked by hydraulic control can be respectively provided on the first connecting assembly 10 and the second connecting assembly 20, and the movable joints include a ball head seat, a middle ball head provided on the ball head seat, and an abutment member for locking the ball head. The two ball heads are respectively connected to the tripod and the camera in a one-to-one correspondence.

[0043] The end of the first connecting component 10 away from the photographic equipment can be fixedly connected to the connecting shaft 30, and the second connecting component 20 is rotatably connected to the rotating shaft through the connecting hole 211 at one end. Thus, the second connecting component 20 can rotate relative to the rotating shaft to adjust the angle with the first connecting component 10. The position adjustment of the two photographic equipment is completed. Of course, the posture of the two photographic equipment can be adjusted by adjusting the ball head.

[0044] The locking of the two corresponding ball heads is achieved through the adjusting member 42. Specifically, the first flow channel 14, the second flow channel 24, the second connecting hole 32 and the first connecting hole 31 are kept in communication, and the inside thereof is filled with working medium, such as hydraulic oil. The adjusting member 42 can be threadedly connected to the connecting shaft 30, and screwing the adjusting member 42 can push the hydraulic push rod 43 to move inward or outward. When the adjusting member 42 is tightened to move the hydraulic push rod 43 inward, the working medium can push the abutment in the movable joint to abut the ball head to achieve locking. Loosening the adjusting member 42 releases the working medium in the flow channel, and the hydraulic push rod 43 moves outward. Correspondingly, the abutment will separate from the ball head, or the abutment force with the ball head will be reduced, thereby unlocking the ball head. The two movable joints can be locked or unlocked synchronously through the adjusting member 42, without the need for step-by-step locking or unlocking, and the adjustment process is more convenient.

[0045] The present application adopts a hydraulic system consisting of the first flow channel 14, the second flow channel 24, the second connecting hole 32 and the hydraulic push rod 43 to control the locking and unlocking of the movable joint, and its advantages are:

[0046] First, the thrust amplification effect and force conductivity advantages of the hydraulic system. The thrust amplification effect refers to the hydraulic system using the principle that liquid is not compressed and the principle that the pressure at each point through the hydraulic flow channel is equal, to establish the equation P = F / S = F1 / S1 = F2 / S2, where F is the external force received by the abutment, S is the cross-sectional area of ​​the abutment in contact with the hydraulic oil, and the cross-sectional areas of the abutment set on each mounting arm in contact with the hydraulic oil are S1 and S2 respectively, S1 = S2, and F1 and F2 are the locking forces of the abutment on the movable joint.

[0047] It can be seen that the locking force applied to the movable joint is F1=F2=F*S1 / S=F*S2 / S, and the applied force is amplified by S1 / S times through the hydraulic channel to output the locking force.

[0048] Second, the response speed is fast. Liquid force transmission has no mechanical impact and responds quickly.

[0049] Third, the control precision is high. The pressure can be precisely controlled, and the displacement control with high precision can be achieved by controlling the advancement of the hydraulic push rod 43.

[0050] Fourthly, the force conductivity is better. Compared with the existing photographic equipment connection device which transmits the force through a mechanical structure, the hydraulic system transmission adopted in this application has better conductivity.

[0051] It is worth noting that the movable joint proposed in this solution can be designed with a sphere, cylinder or cone, etc., and a structure that can connect photographic equipment can be designed on the movable joints of different shapes. Those skilled in the art can make adaptive designs according to actual needs. The working fluid used in the hydraulic system can also be water or other fluids that can be used to drive the hydraulic system, which is not limited here.

[0052] In some embodiments, the section of the connecting shaft 30 between the second connecting component 20 and the adjusting member 42 is the first connecting section 33, and the first connecting section 33 is provided with an external thread; the tightening and adjusting component also includes a fixing nut 41 that cooperates with the first connecting section 33, and the fixing nut 41 abuts against the second connecting component 20, so that the first connecting component 10 and the second connecting component 20 can be abutted and locked. In this embodiment, the first connecting component 10 and the second connecting component 20 are abutted against each other, and by tightening the fixing nut 41, the abutting force between the first connecting component 10 and the second connecting component 20 is increased, thereby increasing the friction between the two, and the two can be locked after the angle adjustment of the two is completed. Of course, by loosening the fixing nut 41, the friction between the two is reduced and the angle between the two can be adjusted.

[0053] The present application provides a first connecting component 10 and a second connecting component 20 that can rotate relative to each other, and provides a movable joint that can rotate relative to each other at the end of each of the first connecting component 10 and the second connecting component 20 to connect with the external photographic equipment. The movable joint is locked and unlocked by the adjusting member 42 to adjust the posture of the external photographic equipment. The position of the external photographic equipment is adjusted by adjusting the angle between the first connecting component 10 and the second connecting component 20 by the fixing nut 41. The position adjustment and the posture adjustment can be adjusted independently. Compared with the common solution that can only lock the movable joint and the two mounting arms at the same time, the step-by-step locking mechanism of the present application greatly optimizes the flexibility of fine-tuning and positioning, making it possible to accurately control the shooting angle and field of view, and is more suitable for the precision adjustment needs in photographic activities.

[0054] The adjustment steps of the two connecting components and the adjustment steps of the movable joints can be independent of each other. The advantages of the independent design are:

[0055] Firstly, the operation flexibility is high, and the locking and unlocking of the movable joint and the two connecting components can be adjusted separately, and the usage methods are more diverse.

[0056] Second, it is safe to use. When the two connecting components of the existing photographic equipment connection device are unlocked, the movable joint will also be unlocked accordingly. Before unlocking, the photographic equipment on the movable joint needs to be disassembled first, otherwise when the connecting components are unlocked, the movable joint will also be unlocked, and due to the influence of the deadweight of the photographic equipment, the photographic equipment will fall over. However, the photographic equipment connection device of the present application can be adjusted in steps. When the two connecting components of the present application are unlocked, the movable joint will not be unlocked accordingly, and there is a certain support for the photographic equipment.

[0057] In some embodiments, the section where the connecting shaft 30 is connected to the adjusting member 42 is the second connecting section 34, the second connecting section 34 is threadedly connected to the adjusting member 42, and the outer diameter of the first connecting section 33 is greater than the outer diameter of the second connecting section 34. In this embodiment, the first connecting section 33 and the second connecting section 34 are set to have different outer diameters, and the fixing nut 41 can be assembled first and then the adjusting member 42 during the assembly process, and the adjustment process of the two will not interfere with each other. Further, the adjusting member 42 includes an adjusting nut threadedly connected to the second connecting section 34; the end of the hydraulic push rod 43 abuts against the adjusting nut for easy adjustment. Of course, the adjusting member 42 may also include an adjusting screw threadedly connected to the first connecting hole 31. The section of the adjusting screw located in the first connecting hole 211 abuts against the hydraulic push rod 43, and a handle can be provided at the other end for easy adjustment. It is worth noting that the hydraulic push rod 43 is sealed and connected to the inner wall of the first connecting hole 31 to prevent leakage of hydraulic oil.

[0058] In some embodiments, the first connecting hole 31 is a stepped hole, the hydraulic push rod 43 is located in a section with a larger hole diameter, and the tightening adjustment assembly further includes an elastic member 44 located in the first connecting hole 31 and abutting against the hydraulic push rod 43 .

[0059] In this embodiment, the enlarged section of the step hole forms a chamber for accommodating hydraulic oil. The elastic member 44 is arranged in the chamber and contacts one end of the hydraulic push rod 43. When the hydraulic push rod 43 moves, one end of the hydraulic push rod 43 abuts and compresses the elastic member 44 to store energy. At this time, the elastic member 44 plays a buffering role, which can protect the hydraulic push rod 43 and prevent the hydraulic push rod 43 from being damaged by being too deep, thereby extending the service life.

[0060] The chamber is used to accommodate and install an elastic member 44, which is arranged in the chamber. One end of the elastic member 44 abuts against the hydraulic push rod 43, and the other end abuts against the bottom wall of the chamber. The elastic member 44 adopts an elastic element such as a spring or rubber. When the hydraulic push rod 43 is performing the step of locking the movable joint, the hydraulic push rod 43 is pushed by the driving adjustment member 42. The hydraulic push rod 43 pushes the elastic member 44 while pushing the hydraulic oil, causing the elastic member 44 to deform. When the hydraulic push rod 43 moves in the opposite direction to unlock the movable joint, the elastic member 44 is released to provide recovery power, drive the hydraulic push rod 43 to move, and help the hydraulic push rod 43 to quickly reset.

[0061] The advantages of setting the elastic member 44 are:

[0062] First, the sensitivity and response speed of the system movement are improved. The energy storage and release of the elastic member 44 can provide additional restoring force, reduce the inertia of the hydraulic push rod 43 and the screw movement, and help improve the movement sensitivity.

[0063] Secondly, it reduces the impact and provides a buffering effect. The elastic member 44 can absorb and slowly release energy, play a certain buffering and shock-absorbing role on each component, and reduce the mechanical impact during locking.

[0064] The embodiment of the present application provides a spring element 44 with the function of elastic energy storage and release, which can provide a buffering and auxiliary effect on the movement of the hydraulic push rod 43, thereby improving the sensitivity and recovery performance of the hydraulic system movement.

[0065] In some embodiments, the photographic equipment connection device further includes: a first ball head seat 51, which is disposed at one end of the first connection component 10 away from the connection shaft 30; a first abutting member 13, which is disposed in the first ball head seat 51 and is slidably connected to the first flow channel 14, one end of the first abutting member 13 is used to abut a first ball head 52 adapted to the first ball head seat 51; a second ball head seat 61, which is disposed at one end of the second connection component 20 away from the connection shaft 30; a second abutting member 23, which is disposed in the second ball head seat 61 and is slidably connected to the second flow channel 24, one end of the second abutting member 23 is used to abut a second ball head 62 adapted to the second ball head seat 61. The first connection component 10 includes a first mounting arm 11 connected to the connection shaft 30, and a first mounting seat 12 disposed at a free end of the first mounting arm 11, the first flow channel 14 is constructed in the first mounting arm 11 and the first mounting seat 12, and the first abutting member 13 is slidably connected to the first mounting seat 12. The second connecting component 20 includes a second mounting arm 21 connected to the connecting shaft 30, and a second mounting seat 22 arranged at the free end of the second mounting arm 21, the second flow channel 24 is constructed in the second mounting arm 21 and the second mounting seat 22, and the second abutment member 23 is slidably connected to the second mounting seat 22.

[0066] In this embodiment, the first mounting arm 11 is connected to the first mounting seat 12 by threads. The first ball head seat 51 is sleeved outside the first mounting seat 12 and is fixedly connected to the first mounting seat 12. A through hole is provided in the first mounting seat 12, which serves as a partial section of the first flow channel 14 to accommodate the first abutment member, and the first abutment member can slide therein. The first ball head 52 is located in the first ball head seat 51 and abuts against the first abutment member. The split structure of the movable joint is convenient for installation. Figure 5 In addition, the first abutting member 13 and the second abutting member are provided with an oil drain hole, in which a top screw 131 can be provided to seal the oil drain hole. By unscrewing the top screw 131, the flow channel can be depressurized and oil can be drained.

[0067] Of course, the connecting shaft 30 and the first mounting arm 11 are separately provided. The connecting shaft 30 is manufactured and installed separately as an independent component, which has the advantages of easy replacement and a wider range of applications. It can be used by replacing different connecting shafts 30 and first mounting arms 11. The connection structure is modular and has good versatility. The connecting shaft 30 and the first mounting arm 11 can also be integrally formed and made into one part. Such a design will make the integrity of the mechanical structure better, and it will be more stable and durable than the split design. Since the mounting arm usually needs to bear a certain load, such as the weight of photographic equipment such as cameras and mobile phones, the integrated design has better load-bearing performance than the split design and is more durable. Those skilled in the art can design according to actual needs, which is not limited here.

[0068] Reference Figure 2 In some embodiments, the side wall of the connecting shaft 30 and / or the connecting hole 211 provided in the embodiments of the present invention is provided with at least one oil groove 35, and each oil groove 35 is provided with a plurality of connecting holes.

[0069] In this embodiment, the connecting hole 211 is a through hole opened on the side wall of the second mounting arm 21, and the connecting shaft 30 extends into the through hole and is rotatably connected to the through hole. At least one oil groove 35 is recessed at the connection point where the outer peripheral wall of the connecting shaft 30 connects to the inner wall of the through hole. The oil groove 35 is an annular oil groove 35 formed around the peripheral wall of the ring connecting shaft 30, and a connecting hole is penetrated through the bottom wall of the annular oil groove 35. The function of the oil groove 35 is that when one end of the hydraulic push rod 43 pushes the hydraulic oil to move, the pressurized hydraulic oil will first pass through the second connecting hole 32 to fill the oil groove 35, and then move to the second flow channel 24 after filling the oil groove 35. When the second mounting arm 21 rotates relative to the first mounting arm 21, since the rotation angle can be 360°, in order to ensure that the hydraulic oil in the first connecting hole 31 and the second flow channel 24 are still connected under the rotation condition, the annular oil groove 35 is designed as an oil chamber transition structure during rotation. When the two mounting arms move relative to each other, the annular oil groove 35 can be used to store and transition oil. The second connecting hole 32 is a necessary passage for the circulation of hydraulic oil. The second connecting hole 32 penetrating the bottom wall of the oil groove 35 has two ports. During the transmission of the hydraulic oil, the two ports are arranged so that: when the hydraulic oil flows out from one of the two ports and gradually fills the annular oil groove 35, all the air in the annular oil groove 35 can be discharged, which is beneficial to the use of the hydraulic system and makes the force conductivity better.

[0070] The present application solution can support the relative rotation of the two mounting arms and can also use the hydraulic push rod 43 to lock the movable joint, which will not affect the locking effect of the movable joint due to the relative rotation of the two, thereby expanding the adjustment range. Of course, the above-mentioned oil groove 35 can also be set on the inner wall of the connecting hole 211, which can also achieve the above-mentioned function.

[0071] Furthermore, two sealing grooves may be provided on the outer peripheral wall of the connecting shaft 30, and the two sealing grooves are provided on both sides of the oil groove 35. The sealing member is provided in the sealing groove, and the sealing member abuts against the inner wall of the through hole of the second mounting arm 21, so as to achieve the sealing effect of the hydraulic oil in the oil groove 35. When the second mounting arm 21 rotates, the sealing member contacts and rubs against the through hole wall, which can provide a certain rotation effect while achieving the function of closing and sealing the annular oil groove 35. The sealing member fits tightly with the inner wall of the mounting arm, and generally uses common components such as sealing rings and sealing gaskets that can fully play the sealing role to prevent the hydraulic oil from leaking from both sides of the annular oil groove 35. The sealing groove is a space for accommodating and positioning the sealing member to ensure that the sealing member correctly performs the sealing function. The oil groove 35 is completely closed by the sealing member to prevent the hydraulic oil from leaking.

[0072] The present application solution can also effectively prevent leakage of hydraulic oil by providing a sealing groove and a sealing member, so that the hydraulic oil in the oil groove 35 is completely sealed by the sealing member. The first mounting arm 11 can also be effectively sealed when rotating relative to the second mounting arm 21, further improving the sealing effect. The structure is simple and easy to install and disassemble.

[0073] In some embodiments, the present application scheme can be Figure 2 As shown, a connecting threaded hole is opened on the adjusting member 42, and the connecting threaded hole is connected with the threaded hole of the adjusting member 42. A fine-tuning member adapted to the connecting threaded hole is arranged in the connecting threaded hole. One end of the fine-tuning member extends into the adjusting member 42 to abut against the hydraulic push rod 43, and the other end can be adjusted with a matching tool. By adjusting the fine-tuning member, the initial pressure of the hydraulic oil in each flow channel by the hydraulic push rod 43 can be relatively adjusted.

[0074] In some embodiments, the first flow channel 14 proposed in the embodiment of the present invention includes a first oil chamber and a second oil chamber arranged along the axis of the first mounting arm 11, and the diameter of the first oil chamber is larger than the diameter of the second oil chamber; the structure of the second flow channel 24 is consistent with the structure of the first flow channel 14. The cross-sectional diameter of the first oil chamber is set to be larger than the cross-sectional diameter of the second oil chamber. In addition, the inner diameter of the section of the first flow channel 14 located in the first mounting seat 12 can also be larger than the inner diameter of the section where the first connecting hole 31 and the hydraulic push rod 43 are adapted. The variable diameter design of the flow channel can form a thrust amplification effect. Tightening the adjusting member 42 with a smaller tightening force can amplify the abutment force of the abutment on the ball head, thereby achieving a labor-saving effect.

[0075] Reference Figure 2 A first toothed disc 71 and a second toothed disc 72 that can mesh with each other are also provided between the first connecting component 10 and the second connecting component 20; the first toothed disc 71 is provided on the first connecting component 10, and the second toothed disc 72 is provided on the second connecting component 20, and the first toothed disc 71 and the second toothed disc 72 are arranged concentrically with the connecting shaft 30.

[0076] In this embodiment, the first mounting arm 11 and the second mounting arm 21 are respectively provided with toothed discs, and the tooth surfaces of the two toothed discs are opposite to each other. When the two mounting arms need to be locked so that they cannot rotate relative to each other, the first mounting arm 11 is driven to move toward the second mounting arm 21 by rotating the fixing nut 41, so that the tooth surfaces of the two toothed discs on the two mounting arms are pushed toward each other and meshed with each other. After the tooth surfaces of the two toothed discs are meshed, the first mounting arm 11 and the second mounting arm 21 are relatively locked. The provision of the two toothed discs realizes a self-locking function, which is to further realize reliable locking of the mounting arms by mechanical means. Compared with directly driving the two mounting arms to directly abut against each other to lock through the friction force of the contact surface, the locking effect of the toothed discs is better.

[0077] In addition, the toothed disc can be replaced by providing a friction damping plate. The second mounting arm 21 and the first mounting arm 11 squeeze the friction damping plate to make rotation between the two difficult. The friction damping plate increases the contact friction between the two. Those skilled in the art can design it according to actual needs, which will not be elaborated here.

[0078] The above description is only a partial or preferred embodiment of the present invention. Neither the text nor the drawings can limit the scope of protection of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the overall concept of the present invention, or direct / indirect application in other related technical fields are included in the scope of protection of the present invention.

Claims

1. A photographic equipment connection device, characterized in that: include: A first connecting component having a first flow channel disposed therein; A connecting shaft is provided at one end of the first connecting assembly, and a first connecting hole communicating with the first flow channel is further provided at the end of the connecting shaft away from the first connecting assembly, and a second connecting hole communicating with the first connecting hole is further provided on a side wall of the connecting shaft; A second connecting component, one end of which is provided with a connecting hole, the connecting shaft is sleeved with the connecting hole, the second connecting component is provided with a second flow channel inside, and the second flow channel is communicated with the second communicating hole; The tightening adjustment component includes a hydraulic push rod located in the first connecting hole, and an adjustment member connected to the hydraulic push rod; the adjustment member is arranged at the end of the connecting shaft away from the first connecting component, and is used to push the push rod to move along the first connecting hole.

2. The photographic equipment connection device according to claim 1, characterized in that: The section of the connecting shaft located between the second connecting assembly and the adjusting member is a first connecting section, and the first connecting section is provided with an external thread; The tightening and adjusting assembly further comprises a tightening nut matched with the first connecting section, and the tightening nut abuts against the second connecting assembly, so that the first connecting assembly and the second connecting assembly can be abutted and locked.

3. The photographic equipment connection device according to claim 2, characterized in that: The section where the connecting shaft is connected to the adjusting member is a second connecting section, and the second connecting section is threadedly connected to the adjusting member.

4. The photographic equipment connection device according to claim 3, characterized in that: An outer diameter of the first connecting section is greater than an outer diameter of the second connecting section.

5. The photographic equipment connection device according to claim 3, characterized in that: The adjusting member includes an adjusting nut threadedly connected to the second connecting section; or, the adjusting member includes an adjusting screw threadedly connected to the first connecting hole.

6. The photographic equipment connection device according to claim 5, characterized in that: The first connecting hole is a stepped hole, the hydraulic push rod is located in a section with a larger hole diameter, and the tightening and adjusting assembly further includes an elastic member located in the first connecting hole and abutting against the hydraulic push rod.

7. The photographic equipment connection device according to any one of claims 1 to 6, characterized in that: The photographic equipment connecting device also includes: A first ball head seat, provided at one end of the first connecting component away from the connecting shaft; A first abutment member is disposed in the first ball head seat and is slidably connected to the first flow channel, and one end of the first abutment member is used to abut against a first ball head adapted to the first ball head seat; A second ball head seat, arranged at an end of the second connecting component away from the connecting shaft; The second abutment member is disposed in the second ball head seat and is slidably connected to the second flow channel. One end of the second abutment member is used to abut against a second ball head matched with the second ball head seat.

8. The photographic equipment connection device according to claim 7, characterized in that: The first connecting component includes a first mounting arm connected to the connecting shaft, and a first mounting seat arranged at the free end of the first mounting arm, the first flow channel is constructed in the first mounting arm and the first mounting seat, and the first abutment member is slidably connected to the first mounting seat.

9. The photographic equipment connection device according to claim 8, characterized in that: The second connecting component includes a second mounting arm connected to the connecting shaft, and a second mounting seat arranged at the free end of the second mounting arm, the second flow channel is constructed in the second mounting arm and the second mounting seat, and the second abutment member is slidably connected to the second mounting seat.

10. The photographic equipment connection device according to claim 9, characterized in that: The inner diameter of the section of the first flow channel located in the first mounting seat is larger than the inner diameter of the section of the first connecting hole adapted to the hydraulic push rod.

11. The photographic equipment connection device according to claim 1, characterized in that: A first toothed disc and a second toothed disc that can mesh with each other are also provided between the first connecting component and the second connecting component; the first toothed disc is provided on the first connecting component, and the second toothed disc is provided on the second connecting component, and the first toothed disc and the second toothed disc are arranged concentrically with the connecting shaft.

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