Locking mechanism and supporting device

Abstract

The utility model belongs to the technical field of instrument fixation, and discloses a locking mechanism and a supporting device. The locking mechanism comprises a first connecting rod, a second connecting rod and a locking assembly. One end of the first connecting rod is fixedly connected with the first support frame, and the other end is provided with an inserting block; one end of the second connecting rod is fixedly connected with the second supporting frame, and the other end of the second connecting rod is provided with an inserting hole for inserting the inserting block; the locking assembly is rotationally connected to the second connecting rod and partially located in the inserting hole, and the locking mechanism can be connected with the inserting block in a clamped mode so as to lock the first connecting rod. When the locking mechanism is used, the first connecting rod and the second connecting rod can be locked through rotation of the locking assembly, then fixed connection of the first supporting frame and the second supporting frame is achieved, a plurality of bolts do not need to be screwed, therefore, the installation difficulty is lowered, the operation process is simplified, the time spent on fixed installation can be effectively saved, and the installation efficiency is improved. Therefore, the installation efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of instrument fixing technology, and in particular to locking mechanisms and support devices. Background Technology

[0002] Screens used in large events need to be fixed with specialized support devices. These devices consist of multiple support rods connected in sequence. Therefore, the difficulty and performance of the connection structure between the support rods affect the installation efficiency and stability of the screen.

[0003] In the prior art, the support device includes a transverse support rod and a longitudinal support rod. The connection between the two sets of support rods is equipped with a quick-locking latch structure, which can quickly lock the two sets of support rods together and maintain the locked state by its own damping or elastic structure.

[0004] However, the quick-locking hook and loop structure consists of two parts, which are fixed to two sets of support rods by multiple bolts. Since the support device requires multiple quick-locking hooks during installation, multiple bolts need to be tightened during the installation process. Moreover, if the distance between the two parts is not reasonable, they need to be re-fixed, resulting in low installation efficiency of the entire support device. Utility Model Content

[0005] The purpose of this utility model is to provide a locking mechanism and a support device, which solves the problem that in the prior art, when the support device is fixed and installed using a quick-locking structure, not only do multiple bolts need to be tightened, but also when the spacing between the two parts of the quick-locking structure is not suitable, it needs to be re-fixed, resulting in low installation efficiency of the support device.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] In a first aspect, this utility model provides a locking mechanism, which includes:

[0008] The first connecting rod has one end for fixed connection with the first support frame and the other end is provided with a plug-in block;

[0009] The second connecting rod has one end for fixed connection with the second support frame, and the other end is provided with a plug hole for the plug block to be inserted.

[0010] A locking assembly is rotatably connected to the second connecting rod and partially located within the insertion hole. The locking assembly can engage with the insertion block to lock the first connecting rod.

[0011] Optionally, the locking assembly includes:

[0012] The rotating part is rotatably connected to the second connecting rod;

[0013] A snap-fit ​​part is disposed in the rotating part and at least partially located in the insertion hole. The insertion block has a snap-fit ​​groove for the snap-fit ​​part to be inserted into. The snap-fit ​​part cooperates with the snap-fit ​​groove to lock the insertion block in the insertion groove.

[0014] Optionally, the axial direction of the rotating part intersects with the direction in which the plug block is inserted into the plug groove, and the opening of the snap-fit ​​groove has a stop arm and a socket for the snap-fit ​​part to be inserted into, and the stop arm can abut against the snap-fit ​​part.

[0015] Optionally, the side of the stop arm near the locking portion has a limiting arc surface.

[0016] Optionally, the rotating part has a locking groove, and the locking assembly further includes:

[0017] The limiting part is inserted into the second connecting rod, and when the snap-fit ​​part is inserted into the snap-fit ​​groove, the limiting part is inserted into the locking groove.

[0018] Optionally, the limiting part has a snap-fit ​​ball, and the locking groove is hemispherical.

[0019] Optionally, the limiting portion is elastic.

[0020] Optionally, the surface of the rotating part has an annular groove that slides with the limiting part.

[0021] Optionally, the first connecting rod is located above the second connecting rod, and the limiting portion is located on the end face of the second connecting rod near the first connecting rod.

[0022] Secondly, this utility model also provides a support device, including:

[0023] First support frame;

[0024] The second support frame intersects with the extending direction of the first support frame;

[0025] The locking mechanism as described in any of the first aspects is used to lock the first support frame and the second support frame.

[0026] The beneficial effects of this utility model are:

[0027] Firstly, by setting a locking component, after the plug-in block is inserted into the plug-in hole, rotating the locking component causes it to engage with the plug-in block, thus fixing the plug-in block in the plug-in hole. This achieves quick locking of the first connecting rod and the second connecting rod. During disassembly, simply rotating the locking component in the opposite direction releases the engagement, allowing the first and second connecting rods to separate smoothly. Therefore, in use, this locking mechanism locks the first and second connecting rods by rotating the locking component, thus achieving a fixed connection between the first and second support frames without the need to tighten multiple bolts. This reduces installation difficulty, simplifies the operation process, and effectively saves time spent on installation, thereby improving installation efficiency. Furthermore, the first and second connecting rods can be manufactured as a set, eliminating concerns about mismatched spacing during installation. The locking mechanism's simple structure allows for mass production using simple manufacturing processes, reducing overall manufacturing costs. Therefore, when this locking mechanism is widely used in the installation of support devices, it can effectively improve installation efficiency and reduce installation costs.

[0028] Secondly, the support device enables the rapid installation of the first and second support frames through a locking mechanism, which effectively reduces the number of bolts that need to be tightened and eliminates the need to consider issues of unreasonable spacing. This effectively reduces the installation difficulty, simplifies the installation process, and helps improve the installation efficiency of the support device. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the support device in an embodiment of this utility model;

[0030] Figure 2 This is a schematic diagram of the locking mechanism in an embodiment of this utility model;

[0031] Figure 3 This is an exploded view of the locking mechanism in an embodiment of this utility model;

[0032] Figure 4 This is a first structural cross-sectional view of the locking mechanism in an embodiment of this utility model;

[0033] Figure 5 This is a second structural cross-sectional view of the locking mechanism in an embodiment of this utility model.

[0034] In the picture:

[0035] 1. First connecting rod; 11. Insertion block; 12. Snap-fit ​​groove; 121. Stop arm; 122. Socket; 2. Second connecting rod; 21. Snap-fit ​​hole; 3. Locking assembly; 31. Rotating part; 311. Locking groove; 312. Ring groove; 32. Snap-fit ​​part; 33. Tightening part; 34. Limiting part; 4. First support frame; 5. Second support frame. Detailed Implementation

[0036] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0037] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0039] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0040] This utility model discloses a locking mechanism and a supporting device.

[0041] Reference Figures 1 to 3The locking mechanism includes a first connecting rod 1, a second connecting rod 2, and a locking assembly 3. One end of the first connecting rod 1 is fixedly connected to the first support frame 4, and the other end is provided with a plug-in block 11; one end of the second connecting rod 2 is fixedly connected to the second support frame 5, and the other end is provided with a plug-in hole 21 for the plug-in block 11 to be inserted; the locking assembly 3 is rotatably connected to the second connecting rod 2 and partially located in the plug-in hole 21, and the locking assembly 3 can engage with the plug-in block 11 to lock the first connecting rod 1.

[0042] Specifically, the extension directions of the first support frame 4 and the second support frame 5 intersect, for example, they can be perpendicular. A first connecting rod 1 and a second connecting rod 2 are respectively provided at the connection points of the first support frame 4 and the second support frame 5. The first connecting rod 1 and the first support frame 4 can be connected by detachable means such as threaded connection or snap-fit, or by non-detachable means such as adhesive bonding or welding. Similarly, the second connecting rod 2 and the second support frame 5 can also be connected in the above manner; this utility model does not limit this connection.

[0043] The end of the first connecting rod 1 protrudes outward to form a plug-in block 11, and the two are integrally structured to ensure high connection strength. A blind hole is provided inward at the end of the second connecting rod 2 as a plug-in hole 21. The depth of the plug-in hole 21 is greater than the length of the plug-in block 11 to ensure that the plug-in block 11 can be fully inserted into the plug-in hole 21 and that the end of the first connecting rod 1 can abut against the end of the second connecting rod 2. A mounting hole is also provided on the second connecting rod 2, communicating with the plug-in hole 21. The locking component 3 is at least partially located within the mounting hole and can rotate within it. The locking component 3 has a locked state and an unlocked state, switching between these states by rotation. In the locked state, the locking component 3 engages with the plug-in block 11 inserted into the plug-in hole 21, thereby locking the first connecting rod 1.

[0044] By setting the locking component 3, after the plug block 11 is inserted into the plug hole 21, rotating the locking component 3 will cause the locking component 3 to engage with the plug block 11, thus fixing the plug block 11 in the plug hole 21. This achieves quick locking of the first connecting rod 1 and the second connecting rod 2. When disassembling, simply rotate the locking component 3 in the opposite direction to release its engagement with the plug block 11, and the first connecting rod 1 and the second connecting rod 2 can be separated smoothly. Therefore, when in use, the locking mechanism locks the first connecting rod 1 and the second connecting rod 2 by rotating the locking component 3, thereby achieving a fixed connection between the first support frame 4 and the second support frame 5. This eliminates the need to tighten multiple bolts, reducing installation difficulty, simplifying the operation process, and effectively saving time spent on fixed installation, thus improving installation efficiency. Furthermore, the first connecting rod 1 and the second connecting rod 2 can be manufactured as a set, eliminating the need to consider the issue of inappropriate spacing between them during installation. The locking mechanism also has a simple structure, allowing for mass production using simple manufacturing processes, which helps reduce overall manufacturing costs. Therefore, when this locking mechanism is widely used in the installation of support devices, it can effectively improve installation efficiency and reduce installation costs.

[0045] Reference Figures 3 to 5 Optionally, the locking assembly 3 includes a rotating part 31 and a snap-fit ​​part 32. The rotating part 31 is rotatably connected to the second connecting rod 2; the snap-fit ​​part 32 is disposed in the rotating part 31 and is at least partially located in the insertion hole 21. The insertion block 11 has a snap-fit ​​groove 12 for the snap-fit ​​part 32 to be inserted into, and the snap-fit ​​part 32 cooperates with the snap-fit ​​groove 12 to lock the insertion block 11 in the insertion groove.

[0046] Specifically, the rotating part 31 is cylindrical and rotatably connected within the second connecting rod 2. A portion of the rotating part 31 can extend outward from the second connecting rod 2, and this extended portion can protrude to form a screwing part 33, facilitating rotation by the installer. Alternatively, the rotating part 31 can be completely contained within the second connecting rod 2. A screwing hole is provided on the second connecting rod 2, into which a screwing rod that connects to the rotating part 31 is inserted, thereby causing the rotating part 31 to rotate. When the rotating part 31 rotates to a designated position, it can be locked using its own damping mechanism, or a separate snap-fit ​​structure can be used to lock the rotating part 31, preventing accidental rotation.

[0047] A locking part 32 is fixedly provided at one end of the rotating part 31 near the insertion hole 21. The locking part 32 is located at the edge of the rotating part 31, and the end of the locking part 32 away from the rotating part 31 extends into the insertion hole 21. The insertion block 11 has a locking groove 12 for the locking part 32 to be inserted. The locking part 32 abuts against the groove wall of the locking groove 12 to lock the insertion block 11 in the insertion hole 21. The specific locking fit between the locking groove 12 and the locking part 32 can be designed according to the actual operation. For example, the snap-fit ​​groove 12 can be formed on the side wall of the plug-in block 11, and the snap-fit ​​part 32 can be rod-shaped. After rotating to a certain angle with the rotating part 31, it can be inserted into the snap-fit ​​groove 12 and abut against the bottom wall of the snap-fit ​​groove 12, thereby locking the plug-in block 11 in the plug-in hole 21. Alternatively, the snap-fit ​​groove 12 can be formed on the bottom wall of the plug-in block 11, and a protrusion or other structure can be provided in the snap-fit ​​groove 12 to form a snap-fit ​​with the snap-fit ​​part 32, which can also lock the plug-in block 11 in the plug-in hole 21.

[0048] By setting the rotating part 31 and the locking part 32, after the plug block 11 is inserted into the plug hole 21, it is only necessary to rotate the rotating part 31. The rotating part 31 drives the locking part 32 to be inserted into the locking groove 12. By using the abutment between the locking part 32 and the locking groove 12, the plug block 11 can be quickly locked in the plug hole 21, thus realizing the quick locking of the first connecting rod 1 and the second connecting rod 2.

[0049] Optionally, the axial direction of the rotating part 31 intersects the direction in which the plug block 11 is inserted into the plug groove, and the opening of the snap-fit ​​groove 12 has a stop arm 121 and a socket 122 for the snap-fit ​​part 32 to be inserted into, and the stop arm 121 can abut against the snap-fit ​​part 32.

[0050] Specifically, the axial direction of the rotating part 31 is perpendicular to the direction in which the plug block 11 is inserted into the plug slot. A U-shaped notch is provided at one end of the locking part 32 that inserts into the plug hole 21, serving as a locking slot 12. A stop arm 121 extends horizontally from the opening of the locking slot 12. The stop arm 121 is integral with the locking part 32, and its length is less than the diameter of the opening of the locking slot 12, thus forming a socket 122 at the opening of the locking slot 12. When the plug block 11 is inserted into the plug hole 21, the locking part 32 can be inserted into the locking slot 12 through the socket 122. When the rotating part 31 drives the locking part 32 to rotate a certain angle, the locking part 32 can abut against the side of the stop arm 121, thereby locking the plug block 11 in the plug hole 21.

[0051] Optionally, the side of the stop arm 121 near the locking part 32 has a limiting arc surface.

[0052] Specifically, the stop arm 121 is recessed on one side facing the locking groove 12 to form a limiting arc surface. The curvature of the limiting arc surface can be designed according to the actual limiting requirements. By setting the limiting arc surface, when the locking part 32 abuts against the limiting arc surface, the limiting arc surface can restrict the locking part 32 from continuing to rotate, thereby preventing the locking part 32 from continuing to rotate and misaligning with the stop arm 121.

[0053] Optionally, the rotating part 31 has a locking groove 311, and the locking assembly 3 further includes a limiting part 34. The limiting part 34 is inserted into the second connecting rod 2, and when the engaging part 32 is inserted into the engaging groove 12, the limiting part 34 is engaged in the locking groove 311.

[0054] Specifically, a hole is made on the surface of the second connecting rod 2 for the insertion of the limiting part 34. The limiting part 34 can be fixed in the hole, and its head can achieve partial expansion and contraction through an elastic structure. When the engaging part 32 is not engaged with the engaging groove 12, the head of the limiting part 34 can abut against the rotating part 31. When the engaging part 32 engages with the engaging groove 12, the locking groove 311 corresponds exactly to the limiting part 34, and the head of the limiting part 34 can be inserted into the locking groove 311 to restrict the rotation of the rotating part 31. To improve the limiting effect, two locking grooves 311 can be opened at intervals on the rotating part 31. When one locking groove 311 engages with the head of the limiting part 34, the locking component 3 is in the unlocked state. When the other locking groove 311 engages with the head of the limiting part 34, the locking component 3 is in the locked state. The interval between the two locking slots 311 can be 45° or 90°, and the specific interval angle can be designed according to the actual rotation angle required by the rotating part 31 during the state switching process.

[0055] Optionally, the limiting part 34 has a ball-receiving part, and the locking groove 311 is hemispherical.

[0056] Specifically, a retractable snap-fit ​​ball is provided at the head of the limiting part 34. The snap-fit ​​ball extends out of the limiting part 34. The locking groove 311 is adapted to the snap-fit ​​ball and is hemispherical, so that the snap-fit ​​ball can be smoothly snapped into the locking groove 311. When the rotating part 31 rotates, only the rotational force needs to be increased to push the snap-fit ​​ball out of the locking groove 311 and release the limitation on the limiting part 34. The depth of the locking groove 311 can be flexibly designed to ensure that the locking groove 311 will neither jam the snap-fit ​​ball nor allow the snap-fit ​​ball to be easily pushed out of the locking groove 311. For example, the depth of the locking groove 311 can be less than the radius of the snap-fit ​​ball, but can be greater than half the radius of the snap-fit ​​ball.

[0057] Optionally, the ball is connected to the limiting part 34 via an elastic part, and the elastic part has a tendency to push the ball out of the limiting part 34.

[0058] Specifically, an elastic element, such as a spring or elastic rod, is provided inside the limiting part 34. The locking ball is attached to the head of the limiting part 34, and the locking ball and the elastic element are kept in contact, so that the elastic element maintains the pushing force to push the locking ball out of the limiting part 34. When the locking groove 311 corresponds to the locking ball, the locking ball can be instantly pushed into the locking groove 311 to form a lock.

[0059] Optionally, the surface of the rotating part 31 has an annular groove 312 that slides with the limiting part 34.

[0060] Specifically, the rotating part 31 is cylindrical, and a locking groove 311 is formed on the bottom wall of the annular groove 312. By setting the annular groove 312, the relative position of the rotating part 31 and the limiting part 34 can be restricted, ensuring that the head of the limiting part 34 can correspond with the locking groove 311.

[0061] Optionally, the first connecting rod 1 is located above the second connecting rod 2, and the limiting part 34 is located on the end face of the second connecting rod 2 near the first connecting rod 1.

[0062] Specifically, the first connecting rod 1 is inserted from above the second connecting rod 2, and their end faces are correspondingly attached. The limiting part 34 is inserted into the second connecting rod from the end face of the second connecting rod. On the one hand, after the first connecting rod 1 and the second connecting rod 2 are installed and fixed, the limiting part 34 can be closed to ensure that the rotating part 31 is locked in the second connecting rod. On the other hand, after the first connecting rod 1 and the second connecting rod 2 are separated, the limiting part 34 can be quickly pulled out to quickly disassemble the rotating part 31 from the second connecting rod 2.

[0063] Optionally, an elastic pad, such as a rubber pad, is provided on the end face of the first connecting rod 1 or the second connecting rod 2, so that the elastic pad can be squeezed when the first connecting rod 1 and the second connecting rod 2 are fixedly installed, thereby ensuring that there is no gap at the connection between the two and improving the stability of the first connecting rod 1 and the second connecting rod 2 after fixing.

[0064] The support device includes a first support frame 4, a second support frame 5, and a locking mechanism as described in the above embodiment. The second support frame 5 intersects the extending direction of the first support frame 4; the locking mechanism is used to lock the first support frame 4 and the second support frame 5.

[0065] The support device enables the rapid installation of the first support frame 4 and the second support frame 5 through a locking mechanism, which can effectively reduce the number of bolts that need to be tightened, and also eliminates the need to consider the problem of unreasonable spacing, thereby effectively reducing the installation difficulty, simplifying the installation process, and improving the installation efficiency of the support device.

[0066] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A locking mechanism, characterized in that include: The first connecting rod (1) has one end for fixed connection with the first support frame (4) and the other end is provided with a plug block (11); The second connecting rod (2) has one end for fixed connection with the second support frame (5), and the other end is provided with a plug hole (21) for the plug block (11) to be inserted; The locking assembly (3) is rotatably connected to the second connecting rod (2) and partially located in the insertion hole (21). The locking assembly (3) can engage with the insertion block (11) to lock the first connecting rod (1).

2. The locking mechanism of claim 1, wherein, The locking assembly (3) includes: The rotating part (31) is rotatably connected to the second connecting rod (2); A snap-fit ​​part (32) is disposed in the rotating part (31) and at least partially located in the insertion hole (21). The insertion block (11) has a snap-fit ​​groove (12) for the snap-fit ​​part (32) to be inserted into. The snap-fit ​​part (32) cooperates with the snap-fit ​​groove (12) to lock the insertion block (11) in the insertion groove.

3. The locking mechanism of claim 2, wherein, The axial direction of the rotating part (31) intersects with the direction in which the plug block (11) is inserted into the plug groove. The opening of the snap-fit ​​groove (12) has a stop arm (121) and a socket (122) for the snap-fit ​​part (32) to be inserted. The stop arm (121) can abut against the snap-fit ​​part (32).

4. The locking mechanism of claim 3, wherein, The stop arm (121) has a limiting arc surface on the side near the locking part (32).

5. The locking mechanism of claim 2, wherein, The rotating part (31) has a locking groove (311), and the locking assembly (3) further includes: The limiting part (34) is inserted into the second connecting rod (2). When the snap-fit ​​part (32) is inserted into the snap-fit ​​groove (12), the limiting part (34) is inserted into the locking groove (311).

6. The locking mechanism of claim 5, wherein, The limiting part (34) has a snap-fit ​​ball, and the locking groove (311) is hemispherical.

7. The locking mechanism of claim 5, wherein, The limiting part (34) is elastic.

8. The locking mechanism of claim 5, wherein, The surface of the rotating part (31) has an annular groove (312) that slides with the limiting part (34).

9. The locking mechanism of claim 5, wherein, The first connecting rod (1) is located above the second connecting rod (2), and the limiting part (34) is located on the end face of the second connecting rod (2) near the first connecting rod (1).

10. Support device, characterized in that include: First support frame (4); The second support frame (5) intersects the extending direction of the first support frame (4); The locking mechanism as described in any one of claims 1 to 9 is used to lock the first support frame (4) and the second support frame (5).

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