A rod clamping device

Abstract

The application relates to a rod clamping device, which comprises a clamping body. The clamping body comprises a first clamping body and a second clamping body which are hingedly connected through a first hinge shaft; a second hinge part is arranged at a position of the first clamping body which is deviated from the first hinge shaft; a third hinge part is arranged at a position of the second clamping body which is deviated from the first hinge shaft; a locking mechanism is connected between the second hinge part and the third hinge part; the locking mechanism comprises a handle and a connecting rod, one end of the connecting rod is hingedly connected to a fourth hinge part in the middle of the handle, and the other end of the connecting rod and one end of the handle are respectively hingedly connected to the third hinge part and the second hinge part. The rod clamping device can quickly clamp a rod, has a simple structure, can adapt to rods with different diameters, has high working efficiency and high safety factor.

Description

Technical Field

[0001] This application relates to the field of stage lighting accessories technology, and in particular to a rod clamping device. Background Technology

[0002] Television studios, theaters, performance halls, bars, and mobile performance venues all require stage lighting to create the desired lighting environment. Because stage lighting needs to be frequently adjusted according to the performance content, it is generally installed and fixed in a detachable manner, hanging the lights on rods or trusses via hooks.

[0003] Currently, stage lighting installation generally involves connecting the hook to the lighting fixture via a connecting device before hanging it onto the rigging or truss. There are generally two installation methods: hanging installation and side-mounting installation. Both methods utilize mounting hooks, which consist of a hook body, a clamping plate, and connecting bolts forming a clamping structure. First, the rod is inserted into the receiving groove of the hook body, then the nut is rotated to retract the clamping plate and tighten the rod. This type of installation structure is relatively cumbersome, with a complex locking mechanism, and requires considerable time and effort to tighten, making it time-consuming and labor-intensive. Summary of the Invention

[0004] To overcome the problems existing in related technologies, this application provides a rod clamping device that can quickly clamp rods, has a simple structure, can adapt to rods of different diameters, has high working efficiency, and a high safety factor.

[0005] This application provides a rod clamping device, including a clamping body. The clamping body includes a first clamping body and a second clamping body hinged to each other via a first hinge axis. A second hinge portion is provided on the first clamping body at a position offset from the first hinge axis. A third hinge portion is provided on the second clamping body at a position offset from the first hinge axis. A locking mechanism is connected between the second hinge portion and the third hinge portion. The locking mechanism includes a handle and a connecting rod, one end of the connecting rod is hinged to a fourth hinge portion in the middle of the handle, and the other end of the connecting rod and one end of the handle are respectively hinged to the third hinge portion and the second hinge portion.

[0006] When using the clamping rod, turn the handle, and under the traction of the connecting rod, the first clamp and the second clamp rotate relative to each other around the first hinge axis and clamp the rod.

[0007] Preferably, it further includes a safety mechanism to prevent the locking mechanism from accidentally opening. The safety mechanism is movably connected between the clamping body and the locking mechanism to limit the rotation of the handle.

[0008] In a preferred embodiment, the safety mechanism includes a trigger. The middle part of the trigger is hinged to the clamping body via a fifth hinge, and a torsion spring is provided between the trigger and the clamping body. The latch at the lower end of the trigger abuts against a slot on the handle. The upper end of the trigger is a pressing part for manually opening the connection between the latch and the slot. Several slots are provided at different positions on the handle, allowing the handle to be fixed in different positions.

[0009] Preferably, the device further includes a clamping diameter adjustment mechanism for adjusting the angle between the first clamping body and the second clamping body when the locking mechanism is closed, so as to be suitable for clamping rods of different diameters. The clamping diameter adjustment mechanism adjusts the angle between the first clamping body and the second clamping body by changing at least one distance between the first hinge pin, the second hinge portion, the third hinge portion, and the fourth hinge portion.

[0010] In a preferred embodiment, the clamping diameter adjustment mechanism is a connecting rod length adjustment mechanism. By changing the length of the connecting rod, the distance between the third hinge and the fourth hinge is changed, thereby adjusting the angle between the first clamp and the second clamp. In this case, the clamping diameter adjustment mechanism includes an external thread on the connecting rod and an adjusting nut fitted onto the connecting rod to adjust its length. One end of the connecting rod is hinged to the fourth hinge; the other end of the connecting rod has an external thread, passes through a through hole on the hinge shaft of the third hinge, and is fitted with the adjusting nut. In other embodiments, without changing the length of the connecting rod, at least one hinge shaft of the second, third, and fourth hinges has a connecting portion that can be fixed in different positions. By adjusting and fixing at least one hinge shaft of the second, third, and fourth hinges in different positions, changing the distance between them, the same function of adjusting the angle between the first and second clamps can be achieved, which is an equivalent solution.

[0011] Preferably, the first hinge pin is arranged parallel to the hinge pins of the second, third, and fourth hinge parts. When the handle is switched on or off, the connecting rod swings in a plane perpendicular to the hinge pin of the second hinge part. This plane is offset from the hinge pin of the second hinge part to avoid interference between the connecting rod and the hinge pin. When the connecting rod intersects the axis of the hinge pin of the second hinge part, the clamping body is at the dead point position of clamping the rod (the hinge pins of the second, third, and fourth hinge parts are in the same plane). At this time, the included angle between the first and second clamping bodies is the smallest, and the clamping body can continuously clamp the rod. Only a safety mechanism is needed to prevent accidental activation of the handle to open the mechanism.

[0012] Preferably, the handle is provided with a positioning post, and the second clamp is provided with an abutting curved surface. The positioning post and the abutting curved surface abut against each other to position the handle at a position just past the dead point.

[0013] Preferably, the hinge end of the handle has an axial slot extending to the fourth hinge portion, the connecting rod is disposed in the slot, and the ears on both sides of the slot are respectively connected to the second hinge portion. The ears on both sides of the slot of the handle are respectively connected to the second hinge portion through two coaxial hinge pins, which can avoid interference between the hinge pins and the connecting rod, and make the force on both sides of the handle balanced.

[0014] Preferably, one of the first clamp or the second clamp serves as a fixed hook that is suspended from the rod, and the other clamp serves as a movable hook that clamps the rod; the fixed hook is C-shaped and has a lamp connection part at its lower end for connecting lamps.

[0015] Preferably, the first clamp and the second clamp include a clamping part with an arc-shaped curved surface for clamping the rod.

[0016] The technical solution provided in this application has the following advantages: 1. The lever principle of the handle makes the clamping operation labor-saving, convenient and quick; 2. The structure of using the connecting rod to pull and hold the body is simple, and the lever principle is used to further achieve the labor-saving effect; 3. The rod body is clamped by using the dead point position formed by the overlap of the connecting rod and the second hinge during the swinging process, which can save the auxiliary force required to maintain the clamping state. It is only necessary to prevent the handle from being accidentally touched, thus improving the safety factor.

[0017] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0018] The above and other objects, features and advantages of this application will become more apparent from the more detailed description of exemplary embodiments thereof in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments thereof.

[0019] Figure 1 This is a three-dimensional structural schematic diagram of the rod clamping device shown in the embodiments of this application;

[0020] Figure 2 This is a schematic diagram of the clamping state of the rod clamping device shown in the embodiments of this application;

[0021] Figure 3 This is a schematic diagram of the structure of the rod clamping device for clamping rods of different diameters, as shown in the embodiments of this application.

[0022] Large diameter rod 00

[0023] 10mm diameter rod

[0024] First clamp 01

[0025] Second clamp 02

[0026] Handle 03

[0027] Insurance Institution 04

[0028] First hinge 11

[0029] Second hinge part 12

[0030] Fourth hinge part 13

[0031] Third hinge part 14

[0032] Fifth hinge part 15

[0033] Abutting surface 21

[0034] Connecting rod 05

[0035] Lighting fixture connection part 06

[0036] Positioning post 31

[0037] Card slot 32

[0038] Buckle 41

[0039] Trigger 42

[0040] Pressing part 43

[0041] Adjusting nut 51 Detailed Implementation

[0042] Preferred embodiments of the present application will now be described in more detail with reference to the accompanying drawings. While preferred embodiments of the present application are shown in the drawings, it should be understood that the present application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0043] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The singular forms “a,” “the,” and “the” used in this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0044] It should be understood that although the terms "first," "second," "third," etc., may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0045] To address the aforementioned issues, this application provides a rod clamping device that can quickly clamp rods, has a simple structure, can adapt to rods of different diameters, and offers high working efficiency and a high safety factor.

[0046] The technical solutions of the embodiments of this application are described in detail below with reference to the accompanying drawings.

[0047] See Figure 1 , Figure 2 A rod clamping device includes a clamping body. The clamping body comprises a first clamping body 01 and a second clamping body 02 hinged together by a first hinge pin 11, resembling a pair of pliers. A second hinge portion 12 is provided on the first clamping body 01 at a position offset from the first hinge pin 11. A third hinge portion 14 is provided on the second clamping body 02 at a position offset from the first hinge pin 11. A locking mechanism is connected between the second hinge portion 12 and the third hinge portion 14. The locking mechanism includes a handle 03 and a connecting rod 05. One end of the connecting rod 05 is hinged to a fourth hinge portion 13 in the middle of the handle 03, and the other end of the connecting rod 05 and one end of the handle 03 are respectively hinged to the third hinge portion 14 and the second hinge portion 12.

[0048] When using the clamping rod, turn the handle 03. Under the traction of the connecting rod 05, the first clamping body 01 and the second clamping body 02 rotate relative to each other around the first hinge axis 11 and clamp the rod.

[0049] The rod clamping device also includes a safety mechanism 04 to prevent the locking mechanism from being accidentally opened. The safety mechanism 04 is movably connected between the clamping body and the locking mechanism and can restrict the rotation of the handle 03.

[0050] In a preferred embodiment, the safety mechanism 04 includes a trigger 42. The middle part of the trigger 42 is hinged to the clamping body via a fifth hinge portion 15, and a torsion spring is provided between the trigger 42 and the clamping body. The latch 41 at the lower end of the trigger 42 abuts against the slot 32 on the handle 03. The upper end of the trigger 42 is a pressing part 43, used to manually open the connection between the latch 41 and the slot 32. Several slots 32 are provided at different positions on the handle 03, which can fix the handle 03 in different positions.

[0051] The first hinge pin 11 is arranged parallel to the hinge pins of the second hinge portion 12, the third hinge portion 14, and the fourth hinge portion 13. When the handle 03 is switched on or off, the connecting rod 05 swings on a plane perpendicular to the hinge pin of the second hinge portion 12. This plane is misaligned with the hinge pin of the second hinge portion 12 to avoid interference between the connecting rod 05 and the hinge pin. When the connecting rod 05 intersects the axis of the hinge pin of the second hinge portion 12, the clamping body is at the dead point position of clamping the rod. At this time, the clamping body can continuously clamp the rod, and only the safety mechanism 04 is needed to prevent accidental activation of the handle 03 to open.

[0052] The handle 03 is provided with a positioning post 31, and the second clamp 02 is provided with an abutting curved surface 21. The positioning post 31 and the abutting curved surface 21 abut against each other to position the handle 03 at the position just past the dead point.

[0053] The hinge end of the handle 03 has an axial slot extending to the fourth hinge portion 13. The connecting rod 05 is located in the slot, and the ears on both sides of the slot are respectively connected to the second hinge portion 12. The ears on both sides of the slot of the handle 03 are respectively connected to the second hinge portion 12 through two coaxial hinge pins, which can avoid interference between the hinge pins and the connecting rod 05 and make the force on both sides of the handle 03 balanced.

[0054] One of the first clamping body 01 or the second clamping body 02 serves as a fixed hook that is suspended on the pole, while the other clamping body serves as a movable hook that clamps the pole. The fixed hook is C-shaped and has a lamp connecting part 06 at its lower end for connecting lamps.

[0055] The first clamping body 01 and the second clamping body 02 include clamping parts with arc-shaped curved surfaces for clamping the rod.

[0056] like Figure 3 This application's rod clamping device is suitable for clamping rods of different diameters. When clamping a larger diameter rod 00, the states of the components of the rod clamping device are shown in solid lines. When clamping a smaller diameter rod 10, the position of the first clamp 01 remains unchanged, while the second clamp 02, handle 03, safety mechanism 04, and connecting rod 05 all rotate at a certain angle around their respective hinge axes. Adjusting to accommodate rods of different diameters is simple; just rotate the adjusting nut to change the length of the connecting rod, making operation very convenient.

[0057] The function of clamping rods of different diameters is achieved through a clamping diameter adjustment mechanism included in the rod clamping device. The clamping diameter adjustment mechanism adjusts the angle between the first clamping body 01 and the second clamping body 02 by changing at least one distance between the first hinge pin 11, the second hinge part 12, the third hinge part 14, and the fourth hinge part 13.

[0058] In a preferred embodiment, the clamping diameter adjustment mechanism is a length adjustment mechanism for the connecting rod 05. By changing the length of the connecting rod 05, the distance between the third hinge portion 14 and the fourth hinge portion 13 is changed, thereby adjusting the included angle between the first clamping body 01 and the second clamping body 02. In this case, the clamping diameter adjustment mechanism includes an external thread on the connecting rod 05 and an adjusting nut 51 fitted onto the connecting rod to adjust its length. One end of the connecting rod 05 is hinged to the fourth hinge portion 13; the other end of the connecting rod 05 has an external thread, passes through a through hole on the hinge shaft of the third hinge portion 14, and is fitted with the adjusting nut 51. In other embodiments, without changing the length of the connecting rod 05, at least one of the hinge pins of the second hinge portion 12, the third hinge portion 14, and the fourth hinge portion 13 has a connecting portion that can be fixed in different positions. By adjusting and fixing at least one of the hinge pins of the second hinge portion 12, the third hinge portion 14, and the fourth hinge portion 13 in different positions and changing the distance between them, the same function of adjusting the included angle between the first clamp 01 and the second clamp 02 can be achieved, which is an equivalent solution.

[0059] The technical solution provided in this application has the following beneficial effects:

[0060] 1. The lever principle of the handle enables a clamping operation that is labor-saving, convenient, and quick;

[0061] 2. The structure of using a connecting rod to pull and clamp the body is simple, and the lever principle is used to further achieve the effect of saving effort;

[0062] 3. By using the dead point position formed by the overlap between the connecting rod and the second hinge during the swinging process to clamp the rod body, the auxiliary force required to maintain the clamped state can be saved. Only the handle needs to be prevented from being accidentally touched, thus improving the safety factor.

[0063] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A rod clamping device, comprising a clamping body, characterized in that: The clamping body includes a first clamping body (01) and a second clamping body (02) hinged to each other by a first hinge axis (11); a second hinge portion (12) is provided on the first clamping body (01) at a position offset from the first hinge axis (11); a third hinge portion (14) is provided on the second clamping body (02) at a position offset from the first hinge axis (11); a locking mechanism is connected between the second hinge portion (12) and the third hinge portion (14); The locking mechanism includes a handle (03) and a connecting rod (05). One end of the connecting rod (05) is hinged to the fourth hinge part (13) in the middle of the handle (03), and the other end of the connecting rod (05) and one end of the handle (03) are respectively hinged to the third hinge part (14) and the second hinge part (12). The first hinge (11) is arranged parallel to the hinges of the second hinge (12), the third hinge (14), and the fourth hinge (13); when the handle (03) is switched on and off, the connecting rod (05) swings on a plane perpendicular to the hinge of the second hinge (12), and this plane is offset from the hinge of the second hinge (12) to avoid interference between the connecting rod (05) and the hinge.

2. The rod clamping device according to claim 1, characterized in that: It also includes a safety mechanism (04) for preventing the locking mechanism from opening accidentally; the safety mechanism (04) is connected between the clamping body and the locking mechanism to limit the rotation of the handle (03).

3. The rod clamping device according to claim 2, characterized in that: The safety mechanism (04) includes a trigger (42); the middle part of the trigger (42) is hinged to the clamping body through a fifth hinge (15), and a torsion spring is provided between the trigger (42) and the clamping body; the buckle (41) at the lower end of the trigger (42) abuts against the slot (32) on the handle (03); the upper end of the trigger (42) is a pressing part (43) for manually opening the connection between the buckle (41) and the slot (32).

4. The rod clamping device according to claim 1, characterized in that: It also includes a clamping diameter adjustment mechanism, which adjusts the included angle between the first clamp (01) and the second clamp (02) by changing at least one distance between the first hinge (11), the second hinge (12), the third hinge (14), and the fourth hinge (13).

5. A rod clamping device according to claim 4, characterized in that: The clamping diameter adjustment mechanism is a length adjustment mechanism for the connecting rod (05), which changes the distance between the third hinge (14) and the fourth hinge (13) by changing the length of the connecting rod (05).

6. The rod clamping device according to claim 5, characterized in that: The clamping diameter adjustment mechanism includes an external thread on the connecting rod (05) and an adjusting nut (51); one end of the connecting rod (05) is hinged to the fourth hinge part (13); the other end of the connecting rod (05) is provided with an external thread, passes through the through hole on the hinge shaft of the third hinge part (14) and is fitted with the adjusting nut (51).

7. A rod clamping device according to claim 4, characterized in that: At least one of the second hinge portion (12), the third hinge portion (14), and the fourth hinge portion (13) has a connecting portion that can be fixed in different positions.

8. A rod clamping device according to claim 1, characterized in that: The handle (03) is provided with a positioning post (31), and the second clamp (02) is provided with an abutting curved surface (21). The positioning post (31) and the abutting curved surface (21) abut against each other to position the handle (03) at the position just past the dead point.

9. A rod clamping device according to claim 1, characterized in that: The handle (03) has an axial slot extending to the fourth hinge (13) at its hinge end. The connecting rod (05) is located in the slot, and the ears on both sides of the slot are respectively connected to the second hinge (12).

10. A rod clamping device according to claim 1, characterized in that: One of the first clamp (01) or the second clamp (02) serves as a fixed hook that is suspended on the rod, and the other clamp serves as a movable hook that clamps the rod. The fixed hook is "C" shaped and has a lamp connection part at its lower end for connecting lamps.

11. A rod clamping device according to claim 1, characterized in that: The first clamp (01) and the second clamp (02) include clamping parts with arc-shaped curved surfaces for clamping rods.

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