Rod body clamping device

Abstract

The invention relates to the technical field of stage lamp accessories, in particular to a rod body clamping device which comprises a C-shaped body. A C-shaped jaw is formed in the right side of the C-shaped body, a first through groove is formed in the middle of the left side of the C-shaped body, the first through groove is communicated with the C-shaped jaw, the first through groove is connected with a handle through a first fixing shaft arranged at the upper end of the inner side face of the first through groove, and a rectangular groove is formed in the upper end of the outer side face of the handle. The indexing pin main body comprises an indexing pin telescopic part, and the indexing pin telescopic part is telescopically clamped with the rectangular groove of the handle; according to the rod body clamping device, the toggle dead point locking principle is mainly utilized, force is amplified through the lever, certain pre-tightening force can be provided at the clamping end through small force, and then clamping of the rod body is achieved; meanwhile, the indexing pin is arranged at the top of the device and can serve as a safety device when the lamp hook is clamped, and the situation that the lamp and the lamp hook fall together due to the fact that the handle structure is accidentally opened is prevented.

Description

Technical Field

[0001] The present application relates to the technical field of stage light accessories, and in particular to a rod clamping device. Background Art

[0002] In the process of setting up TV studios, theaters, mobile performances and concerts, the arrangement of stage lighting is the key to achieving ideal lighting effects. Due to the different lighting requirements in different scenes, the installation position and angle of the lighting fixtures need to be adjusted frequently, which requires the lighting hooks to be efficient, convenient and safe to adapt to the rapidly changing construction needs.

[0003] At present, the stage lighting hooks on the market are mainly divided into two categories: conventional rotating nut clamping hooks and cam pressing clamping hooks. Conventional rotating nut clamping hooks fix the lamp by rotating the nut. Although the structure is simple, there are obvious convenience problems in actual operation. The nut needs to be twisted for a long time during the installation process, which is not only time-consuming, but also the labor intensity of the operator is high during frequent disassembly and adjustment, which affects the work efficiency.

[0004] The other type of cam-pressed clamping lamp hook is more convenient to install, but still requires two hands to disassemble, which increases the complexity of the operation. In addition, its safety paddle design has the risk of pinching, and the main structure is relatively complex, which is easy to get entangled with the complex lamp hook wires in the environment, increasing safety hazards and maintenance difficulties.

[0005] Therefore, the stage lighting hooks in the prior art are insufficient in convenience, safety and operational efficiency, and a new lighting hook design is urgently needed to solve the above problems and improve the efficiency and safety of stage construction. Summary of the invention

[0006] The present application provides a rod clamping device, which can effectively solve the complicated installation and disassembly problems of existing models on the market. At the same time, the two-handed disassembly operation of pressing the cam to clamp the lamp hook is improved to a one-handed operation, which effectively increases the convenience and safety of the operation and can effectively solve the problems in the background technology.

[0007] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a rod clamping device, comprising: a C-shaped main body; a C-shaped tiger's mouth is provided on the right side of the C-shaped main body, a through groove is provided in the middle of the left side of the C-shaped main body, the through groove is communicated with the C-shaped tiger's mouth, the through groove is connected to a handle through a fixed shaft arranged at the upper end of the inner side surface thereof, a rectangular groove is provided on the upper end of the outer side surface of the handle, a dividing pin main body is provided on the upper end of the outer side surface of the C-shaped main body, the dividing pin main body includes a telescopic part of the dividing pin, and the telescopic part of the dividing pin can be telescopically engaged with the rectangular groove of the handle.

[0008] The handle is rotatably connected to structure three via a handle shaft arranged on its outer side surface, structure three is rotatably connected to structure two via a movable shaft three arranged at the lower end of its outer side surface, the upper end of the outer side surface of structure two is rotatably connected to fixed shaft two, fixed shaft two is rotatably connected to the C-shaped main body, the outer side surface of fixed shaft two is rotatably connected to structure one, movable shaft two is provided at the lower end of the outer side surface of structure two, movable shaft two is threadedly connected to a positioning screw via a threaded hole arranged on its outer side surface, a through groove two is provided at the lower end of the outer side surface of structure one, the inner side surface of through groove two is rotatably connected to movable shaft one, and the outer side surface of movable shaft one is connected to the end of the positioning screw.

[0009] Preferably, the upper end of the inner side surface of the C-shaped jaws is evenly arrayed with strip-shaped bite teeth one, and the middle part of the inner side surface of the C-shaped jaws is evenly arrayed with strip-shaped bite teeth three.

[0010] Preferably, a strip groove is provided at the lower end of the inner side surface of the C-shaped jaws, and a positioning hole is provided in the middle of the inner side surface of the strip groove.

[0011] Preferably, a sheath is provided at the end of the handle, and a fixed shaft is rotatably connected to the C-shaped body.

[0012] Preferably, the outer side surface of the structure one is provided with strip-shaped engaging teeth two near the C-shaped base of the thumb.

[0013] Compared with the prior art, the beneficial effects of this application are:

[0014] 1. This rod clamping device mainly uses the dead point locking principle of the toggle joint to amplify the force through the lever. A small force can be used to provide a certain pre-tightening force at the clamping end, thereby achieving the clamping of the rod. At the same time, an indexing pin is provided on the top of the device, which can serve as a safety device when the lamp hook is clamped to prevent the handle structure from accidentally opening and causing the lamp and the lamp hook to fall together.

[0015] 2. Through the rectangular groove connection design of the indexing pin telescopic part and the handle, the user only needs to press or release the handle with one hand to achieve the rapid opening and closing of the clamping device, without the need for repeated twisting of the traditional rotating nut or the two-handed operation of the cam pressing structure; the multi-link linkage structure simplifies the operation process, and pressing the handle with one hand can link multiple sets of engaging teeth to tighten the clamp, greatly improving the efficiency of lamp installation, disassembly and angle adjustment.

[0016] 3. The multi-stage bite teeth are distributed in the upper, middle and lower positions of the C-shaped jaws. The multi-point bite increases the friction with the rod body, effectively preventing the lamp from sliding or loosening. It is especially suitable for high-load or vibration environments. The threaded combination of the adjustment screw and the movable shaft supports fine-tuning of the clamping force. It can be locked adaptively according to the rod diameter, avoiding the safety hazards caused by overpressure or underpressure in the traditional cam structure.

[0017] 4. The integrated design of the C-shaped body and the through slot reduces exposed parts, avoids the risk of wire entanglement, simplifies the internal transmission structure, and reduces the failure rate; the strip groove and positioning hole provide auxiliary positioning function to ensure the rapid alignment and installation of the clamping device and the external bracket, reducing the debugging time; the adjustable meshing tooth layout is compatible with lamp poles or brackets of different diameters, adapting to the diverse installation requirements in stage construction; the telescopic locking mechanism of the indexing pin avoids the risk of pinching by traditional cam paddles, and the clamping state can be intuitively judged by the clamping position of the indexing pin, reducing the possibility of misoperation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is an illustration of the structure of this application Figure 1 ;

[0019] Figure 2 This is an illustration of the structure of this application Figure 2 ;

[0020] Figure 3 This is an illustration of the structure of this application Figure 3 ;

[0021] Figure 4 This is the main view of this application;

[0022] Figure 5 This is the main cross-sectional view of this application;

[0023] Figure 6 It is a front cross-sectional view of the present application when the structure is in a retracted state;

[0024] Figure 7 It is a schematic diagram of the structure of the handle;

[0025] Figure 8 It is a schematic diagram of the structure of structure 2;

[0026] Fig. 9 is a schematic diagram of the structure of structure 1;

[0027] Fig.10 This is a schematic diagram of the structure of structure three.

[0028] In the figure: 1 sheath, 2 handle, 3 fixed shaft 1, 4 indexing pin body, 5 C-shaped body, 6 strip-shaped engaging tooth 1, 7 strip-shaped groove, 8 fixed shaft 2, 9 adjustment screw, 10 positioning hole, 11 structure 1, 12 movable shaft 1, 13 through groove 1, 14 strip-shaped engaging tooth 2, 15 strip-shaped engaging tooth 3, 16 indexing pin telescopic part, 17 handle shaft, 18 movable shaft 2, 19 structure 2, 20 movable shaft 3, 21 structure 3. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0030] In the description of this application, if the orientation description is involved, for example, the orientation or position relationship indicated by "upper", "lower", "front", "back", "left", "right", etc. is based on the attached Figure 4 The orientation or position relationship shown is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation of the present application. When a feature is referred to as being "set", "fixed", or "connected" to another feature, it can be directly set, fixed, or connected to the other feature, or it can be indirectly set, fixed, or connected to the other feature.

[0031] See also Figure 1-10 The present application provides the following technical solutions: a rod clamping device, comprising: a C-shaped main body 5; a C-shaped tiger's mouth is provided on the right side of the C-shaped main body, a through groove 13 is provided in the middle of the left side of the C-shaped main body 5, the through groove 13 is communicated with the C-shaped tiger's mouth, the through groove 13 is connected to the handle 2 through a fixed shaft 3 arranged at the upper end of the inner side surface thereof, a rectangular groove is provided at the upper end of the outer side surface of the handle 2, a dividing pin main body 4 is provided at the upper end of the outer side surface of the C-shaped main body 5, the dividing pin main body 4 includes a dividing pin telescopic part 16, and the dividing pin telescopic part 16 can be telescopically clamped with the rectangular groove of the handle 2.

[0032] Specifically, the indexing pin body 4 is threadedly mounted on the C-shaped body 5, and the indexing pin telescopic portion 16 is inserted into the rectangular groove of the handle 2 to fix the position of the handle 2. The indexing pin is a self-locking indexing pin.

[0033] The handle 2 is rotatably connected to a structure three 21 via a handle shaft 17 arranged on its outer side surface, and the structure three 21 is rotatably connected to a structure two 19 via a movable shaft three 20 arranged at the lower end of the outer side surface, and the upper end of the outer side surface of the structure two 19 is rotatably connected to a fixed shaft two 8, and the fixed shaft two 8 is rotatably connected to the C-shaped main body 5, and the outer side surface of the fixed shaft two 8 is rotatably connected to a structure one 11, and a movable shaft two 18 is provided at the lower end of the outer side surface of the structure two 19, and the movable shaft two 18 is threadedly connected to a positioning screw 9 through a threaded hole arranged on its outer side surface, and a through groove two is provided at the lower end of the outer side surface of the structure one 11, and the inner side surface of the through groove two is rotatably connected to a movable shaft one 12, and the outer side surface of the movable shaft one 12 is connected to the end of the positioning screw 9.

[0034] Specifically, the outer side of the positioning screw 9 is provided with a threaded section and a smooth section, the threaded section is threadedly connected with the threaded hole on the outer side of the movable shaft 2 18, the smooth section of the positioning screw 9 is rotatably connected with the movable shaft 1 12 through a bearing, the rod body of the positioning screw 9 is a T-shaped rod, and the handle shaft 17 is used to rotatably connect the handle 2 with the structure 3 21; the fixed shaft 1 3, the handle shaft 17 and the movable shaft 3 20 constitute a toggle mechanism, and the line connecting the center points of the fixed shaft 1 3 and the movable shaft 3 20 is used as a criterion for judging whether the handle shaft 17 is over the dead point; when the structure 1 1 performs a clamping action, the handle shaft 17 is located on the right side of the line connecting the center points of the fixed shaft 1 3 and the movable shaft 3 20. When the structure 1 1 is released, the handle shaft 17 is located on the left side of the line connecting the center points of the fixed shaft 1 3 and the movable shaft 3 20.

[0035] More specifically, when clamping rods of different sizes, the axial spacing between the movable shaft 12 and the movable shaft 2 18 can be precisely adjusted by rotating the adjustment screw 9 clockwise or counterclockwise. When the device is in a locked state (the toggle mechanism passes the dead point position), the movable shaft 2 18 remains relatively fixed with the C-shaped body 5, and the displacement of the movable shaft 12 directly drives the position change of the structure 11 relative to the C-shaped body 5 - its movement trajectory approaching or moving away from the C-shaped jaws, and the clamping force is controlled by the meshing depth of the bar-shaped bite teeth 2 14 and the rod body. This linkage mechanism allows the clamping opening range to be linearly adjusted, which can adapt to the precise bite of small-diameter lamp poles and meet the strong locking of large-diameter brackets, thereby realizing adaptive clamping of the rod body.

[0036] Furthermore, the upper end of the inner side surface of the C-shaped jaws is evenly arrayed with strip-shaped bite teeth 1 6, and the middle part of the inner side surface of the C-shaped jaws is evenly arrayed with strip-shaped bite teeth 3 15.

[0037] Specifically, the strip-shaped engaging teeth 1 6 and the strip-shaped engaging teeth 3 15 can increase the friction force during engagement, and can effectively improve the reliability of the rod fixation.

[0038] Furthermore, a strip groove 7 is provided at the lower end of the inner side surface of the C-shaped jaws, and a positioning hole 10 is provided in the middle of the inner side surface of the strip groove 7 .

[0039] Specifically, the strip groove 7 and the positioning hole 10 are used as lamp hooks for mounting lamps.

[0040] Furthermore, a sheath 1 is provided at the end of the handle 2, and a fixed shaft 3 is rotatably connected to the C-shaped body 5.

[0041] Specifically, the provision of the sheath 1 increases the convenience of operation.

[0042] Furthermore, a strip-shaped engaging tooth 2 14 is provided on the outer side surface of the structure 11 near the C-shaped base of the thumb.

[0043] When in use: mount the lamp in the strip groove 7 on the C-shaped jaws, and perform clamping and releasing operations on the lamp.

[0044] The handle shaft 17 is rotated counterclockwise around the fixed shaft 3 until the handle shaft 17 passes the dead point from left to right. At the same time, the handle shaft 17 moves downward relative to the lamp hook body, and the movable shaft 3 20 also moves downward relative to the C-shaped body 5, thereby pushing the structure 11 to rotate counterclockwise around the fixed shaft 2 8, and at the same time pushing the structure 11 to move counterclockwise to clamp the rod body of the lamp.

[0045] When the structure 11 is retracted, the elastic force of the extended part of the indexing pin can offset the gravity of the handle 2 falling naturally, thereby maintaining the open state of the handle 2, making it convenient for the user to hang the C-shaped body 5 on the rod body.

[0046] Although the embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A rod clamping device, characterized in that: include: A C-shaped body (5); a C-shaped jaws is provided on the right side of the C-shaped body; a through slot (13) is provided in the middle of the left side of the C-shaped body (5); the through slot (13) is communicated with the C-shaped jaws; the through slot (13) is connected to a handle (2) via a fixed shaft (3) provided at the upper end of the inner side surface thereof; a rectangular groove is provided at the upper end of the outer side surface of the handle (2); an indexing pin body (4) is provided at the upper end of the outer side surface of the C-shaped body (5); the indexing pin body (4) comprises an indexing pin telescopic portion (16); the indexing pin telescopic portion (16) is telescopically engaged with the rectangular groove of the handle (2); The handle (2) is rotatably connected to a structure three (21) via a handle shaft (17) arranged on the outer side surface thereof, and the structure three (21) is rotatably connected to a structure two (19) via a movable shaft three (20) arranged on the lower end of the outer side surface thereof, and the upper end of the outer side surface of the structure two (19) is rotatably connected to a fixed shaft two (8), and the fixed shaft two (8) is rotatably connected to the C-shaped main body (5), and the outer side surface of the fixed shaft two (8) is rotatably connected to the structure one (11), and the lower end of the outer side surface of the structure two (19) is provided with a movable shaft two (18), and the movable shaft two (18) is threadedly connected to an adjusting screw (9) via a threaded hole arranged on the outer side surface thereof, and the lower end of the outer side surface of the structure one (11) is provided with a through groove two, and the inner side surface of the through groove two is rotatably connected to the movable shaft one (12), and the outer side surface of the movable shaft one (12) is connected to the end of the adjusting screw (9).

2. A rod clamping device according to claim 1, characterized in that: The upper end of the inner side surface of the C-shaped jaws is evenly arrayed with strip-shaped bite teeth one (6), and the middle part of the inner side surface of the C-shaped jaws is evenly arrayed with strip-shaped bite teeth three (15).

3. A rod clamping device according to claim 1, characterized in that: A strip groove (7) is provided at the lower end of the inner side surface of the C-shaped jaws, and a positioning hole (10) is provided in the middle of the inner side surface of the strip groove (7).

4. A rod clamping device according to claim 1, characterized in that: A protective sleeve (1) is provided at the end of the handle (2), and a fixed shaft (3) is rotatably connected to the C-shaped body (5).

5. The rod clamping device according to claim 1, characterized in that: The outer side surface of the structure one (11) is provided with strip-shaped engaging teeth two (14) near the C-shaped base of the thumb.

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