Quick connecting and clamping device

Abstract

The utility model discloses a quick connecting and clamping device which comprises a core rod, a pulling and screwing assembly arranged on the core rod and an elastic assembly connected to the core rod in a sleeved mode, and the pulling and screwing assembly comprises a cam handle rotationally connected to one end of the core rod and a spring piece movably arranged at the other end of the core rod. The cam handle is connected with the end of the spring piece, a first flat position is arranged at the end, close to the spring piece, of the core rod, an installation groove is formed between the first flat position and the core rod, a locking block is arranged on the core rod, a first kidney-shaped hole is formed in the locking block, and a second kidney-shaped hole is formed in the first kidney-shaped hole. The locking block penetrates through the first flat position through the first kidney-shaped hole and is connected into the mounting groove, and when the locking block rotates till the length direction of the first kidney-shaped hole is inconsistent with the length direction of the first flat position, the first flat position limits movement of the locking block. The quick connecting and clamping device has the advantages of being high in vibration resistance and impact resistance, reliable in connection, capable of being quickly disassembled and assembled, capable of being repeatedly disassembled and assembled for use, convenient to disassemble and assemble, easy to machine and manufacture and the like.

Description

Technical Field

[0001] This utility model relates to the field of connectors, specifically to a quick-connect clamping device. Background Technology

[0002] In the mechanical field, the method used to connect two or more layers and generate a certain axial preload is usually a threaded connection pair composed of bolts and nuts. Threaded connection pairs usually require physical or chemical methods such as deformed threads, thread-locking agents, and slotted safety pins to prevent loosening of the threads, making them suitable for vibration and impact environments. After repeated disassembly and assembly, threaded connection pairs are prone to wear defects such as stripping and chipping, which cannot meet the requirements of repeated disassembly and assembly for reuse. The preload generated by threaded connection pairs is generated by tightening torque, which requires installation tools such as torque wrenches for installation and disassembly, and the connection process is time-consuming and labor-intensive. Although the processing and inspection methods for threaded connection pairs are mature, the thread structure is easily damaged and requires careful protection during processing, clamping, and transportation. Once the thread structure is damaged, it often means that the entire part is scrapped.

[0003] In certain applications where gas or liquid sealing is required and installation covers or frames need to be disassembled and reassembled frequently, and where there are time constraints for installation and disassembly, the connectors are required to generate a certain preload on the structural connection surfaces, have the function of quick installation and disassembly, and have a repeatable service life after multiple disassemblies and reassemblies; the currently used threaded connection method is difficult to meet the requirements. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, this utility model provides a quick connection clamping device with strong vibration and impact resistance, reliable connection, quick disassembly and assembly and repeated disassembly and assembly, convenient disassembly and assembly, and simple processing and manufacturing.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A quick-connect clamping device includes a core rod, a wrench assembly disposed on the core rod, and an elastic assembly sleeved on the core rod. The wrench assembly includes a cam handle rotatably connected to one end of the core rod and a spring plate movably disposed at the other end of the core rod. The cam handle is connected to the end of the spring plate. A first flat portion is provided at the end of the core rod near the spring plate. A mounting groove is provided between the first flat portion and the core rod. A locking block is provided on the core rod. The locking block is provided with a first oblong hole. The locking block passes through the first oblong hole, passes through the first flat portion, and is connected to the mounting groove. When the locking block rotates to the point where the length direction of the first oblong hole is not consistent with the length direction of the first flat portion, the first flat portion limits the movement of the locking block.

[0007] As a further improvement to the above technical solution, the elastic sheet is provided with a second oblong hole, and the locking block is provided with a limiting protrusion. When the limiting protrusion engages with the second oblong hole, the spring sheet limits the rotation of the locking block.

[0008] As a further improvement to the above technical solution, there are two limiting protrusions, which are disposed on both sides of the first waist-shaped hole and respectively contact the two sides of the second waist-shaped hole.

[0009] As a further improvement to the above technical solution, a locking hole is provided on the first flat part, and a retaining pin is installed in the locking hole.

[0010] As a further improvement to the above technical solution, the spring sheet and the cam handle are fixedly connected by rivets.

[0011] As a further improvement to the above technical solution, the cam part of the cam handle is rotatably connected to the end of the core rod through a hinge structure, and when the cam handle rotates, the cam part provides a pressure to the elastic component.

[0012] As a further improvement to the above technical solution, the hinge structure includes a pivot pin, a first hinge hole disposed at the end of the core rod, and a second hinge hole disposed at the cam portion, wherein the first hinge hole and the second hinge hole are connected by the pivot pin.

[0013] As a further improvement to the above technical solution, the cam part is provided with a notch, the end of the core rod is engaged in the notch, and the cam part is provided with the second hinge hole on both sides of the notch.

[0014] As a further improvement to the above technical solution, the elastic component includes a plurality of butterfly springs, which are sleeved on the core rod in a stacked or paired manner.

[0015] As a further improvement to the above technical solution, a second flat part is provided on the core rod, and two limiting blocks are sleeved on the second flat part. The second flat part limits the circumferential rotation of the limiting blocks, and the connection between the second flat part and the core rod body limits the limiting blocks on the side away from the cam handle in the axial direction. A plurality of the butterfly springs are located between the two limiting blocks.

[0016] The beneficial effects of this utility model are:

[0017] 1. The quick-connect clamping device of this utility model adopts a core rod, elastic component, locking block, and wrench component. The connection between each structure is simple and the transition is reasonable. It is easy to replace and can be assembled without the aid of tools. It is convenient to assemble and disassemble and can be used multiple times.

[0018] 2. The quick-connect clamping device of this utility model uses an elastic component composed of butterfly springs to clamp the installation structure. The pre-tightening force will not decrease in a vibration environment, the connection structure is not easy to loosen, the device can be disassembled and used multiple times, up to 1000 times, and has a long service life.

[0019] 3. The quick-connect clamping device of this utility model locks the locking block with the core rod, and the spring plate locks the locking block. If necessary, a snap ring pin can also be installed to form a lock. All multiple locking operations can be completed manually, and the locking method is stable and reliable. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 This is a schematic diagram of the structure of a quick-connect clamping device according to an embodiment of the present invention;

[0022] Figure 2 This is an exploded view of the structure of a quick-connect clamping device according to an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram illustrating the application state of a fast connection and clamping device according to an embodiment of this utility model.

[0024] Reference numerals: 1. Core rod; 11. First flat part; 12. Locking hole; 13. Mounting groove; 14. Second flat part; 15. First hinge hole; 2. Tightening assembly; 21. Cam handle; 22. Cam part; 23. Notch; 24. Second hinge hole; 25. Pivot pin; 26. Rivet; 27. Spring plate; 28. Second oblong hole; 3. Elastic assembly; 31. Butterfly spring; 32. Limiting block; 4. Locking block; 41. First oblong hole; 42. Limiting protrusion; 5. Snap ring pin; 6. First plate; 7. Second plate. Detailed Implementation

[0025] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / connections involved in the patent do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. For example, fixed connections / fixed installations can use screw connections, bolt connections, pin connections, key connections, adhesive connections, mortise and tenon connections, welding, riveting, etc., as needed. For detachable connections, screw connections, bolt connections, threaded connections, snap-fit ​​connections, mortise and tenon connections, Velcro connections, etc., can be used as needed. The various technical features in this utility model can be combined interactively without contradicting each other.

[0026] Reference Figure 1 and Figure 2 This utility model provides a quick-connect clamping device, including a core rod 1, a wrench assembly 2 disposed on the core rod 1, and an elastic assembly 3 sleeved on the core rod 1. The wrench assembly 2 includes a cam handle 21 rotatably connected to one end of the core rod 1 and a spring plate 27 movably disposed at the other end of the core rod 1. The cam handle 21 is connected to the end of the spring plate 27. A first flat part 11 is provided at the end of the core rod 1 near the spring plate 27. An installation groove 13 is provided between the first flat part 11 and the core rod 1. The diameter of the core rod 1 at the installation groove 13 is smaller than the size of the first flat part 11. A locking block 4 is provided on the core rod 1. The locking block 4 is provided with a first oblong hole 41. The locking block 4 passes through the first oblong hole 41, passes through the first flat part 11, and is connected to the installation groove 13. When the locking block 4 rotates to the point where the length direction of the first oblong hole 41 is not consistent with the length direction of the first flat part 11, the first flat part 11 limits the movement of the locking block 4.

[0027] During installation, refer to Figure 3 The core rod 1 is passed through the hole in the sandwich panel (e.g., two panels: the first panel 6 and the second panel 7). The locking block 4 is fitted into the mounting groove 13 from the first flat part 11 of the core rod 1. The locking block 4 is rotated 90°. Due to the obstruction of the first flat part 11, the locking block 4 cannot move back, thus locking. Then, the cam handle 21 is rotated to lock. The cam part 22 of the cam handle 21 compresses the elastic component 3, so that the first panel 6 and the second panel 7 are axially clamped and meet a certain preload requirement.

[0028] Furthermore, refer to Figure 2The elastic sheet is provided with a second oblong hole 28, and the locking block 4 is provided with two limiting protrusions 42. The two limiting protrusions 42 are provided on both sides of the first oblong hole 41 and respectively contact the two sides of the second oblong hole 28. In this way, after the spring sheet 27 rotates, the second oblong hole 28 is fitted onto the limiting protrusions 42 of the locking block 4, that is, the limiting protrusions 42 are engaged with the second oblong hole 28. The spring sheet 27 will limit the rotation of the locking block 4 to prevent the locking block 4 from accidentally rotating and unlocking.

[0029] Furthermore, refer to Figure 2 The first flat part 11 is provided with a locking hole 12, and a snap ring pin 5 is installed in the locking hole 12. When the spring plate 27 rotates and is sleeved on the limiting protrusion 42, the spring plate 27 is located between the locking hole 12 and the locking block 4. At this time, the snap ring pin 5 is inserted into the locking hole 12 to prevent the spring plate 27 from moving backward, thereby realizing multiple safety locking and ensuring the stability of the quick connection clamping device after clamping the two plates.

[0030] In this embodiment, refer to Figure 2-3 The end of the spring sheet 27 away from the second waist-shaped hole 28 is fixedly connected to the end of the cam handle 21 away from the cam part 22 by a rivet 26, which facilitates processing and connection.

[0031] Furthermore, the cam portion 22 of the cam handle 21 is rotatably connected to the end of the core rod 1 through a hinge structure. When the cam handle 21 rotates, the cam portion 22 provides a pressure to the elastic component 3, thereby satisfying a certain preload requirement after the first plate 6 and the second plate 7 are axially clamped.

[0032] Specifically, the hinge structure includes a pivot pin 25, a first hinge hole 15 located at the end of the core rod 1, and a second hinge hole 24 located in the cam portion 22. The first hinge hole 15 and the second hinge hole 24 are connected by the pivot pin 25. The cam portion 22 has a notch 23, and the end of the core rod 1 is engaged in the notch 23. The second hinge hole 24 is provided on both sides of the cam portion 22 located in the notch 23. This arrangement makes the rotation structure of the cam handle 21 relative to the core rod 1 more reliable, and the structure is simple, easy to manufacture, and low in cost.

[0033] In this embodiment, refer to Figure 2The core rod 1 is provided with a second flat part 14, and the second flat part 14 is fitted with two limiting blocks 32. The second flat part 14 limits the circumferential rotation of the limiting blocks 32, and the connection between the second flat part 14 and the main body of the core rod 1 limits the limiting blocks 32 on the side away from the cam handle 21 axially. The elastic component 3 includes a plurality of butterfly springs 31, which are located between the two limiting blocks 32, and are fitted onto the core rod 1 in a stacked or paired manner.

[0034] Understandably, during installation, one of the limiting blocks 32 is inserted into the core rod 1 from the second flat position 14, then the disc spring 31 is installed, and finally the other limiting block 32 is installed. Since the limiting block 32 is axially limited by the second flat position 14, the limiting block 32 can only move axially. When the cam handle 21 is rotated, the cam part 22 drives the outer limiting block 32 to move axially, squeezing the disc spring 31, so that the inner limiting block 32 has a pressure acting on the sandwich plate, so that the sandwich plate is axially clamped and meets a certain preload requirement.

[0035] The above is a detailed description of the preferred embodiments of the present utility model. However, the present utility model is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A quick connect clamping device, characterized by: The utility model provides a twist and pull device, which comprises a core rod, a twist and pull assembly arranged on the core rod and an elastic assembly sleeved on the core rod, the twist and pull assembly comprises a cam handle rotatably connected to one end of the core rod and a spring sheet movably arranged on the other end of the core rod, the cam handle is connected to the end of the spring sheet, one end of the core rod close to the spring sheet is provided with a first flat part, a mounting groove is arranged between the first flat part and the core rod, a locking block is arranged on the core rod, a first waist-shaped hole is arranged on the locking block, the locking block passes through the first flat part and is connected to the mounting groove through the first waist-shaped hole, when the locking block is rotated to the length direction of the first waist-shaped hole is inconsistent with the length direction of the first flat part, the first flat part limits the movement of the locking block.

2. A quick connect clamping device according to claim 1, characterized in that: A second waist-shaped hole is arranged on the spring sheet, a limiting protrusion is arranged on the locking block, when the limiting protrusion is clamped with the second waist-shaped hole, the spring sheet limits the rotation of the locking block.

3. A quick connect clamping device according to claim 2, wherein: The limiting protrusion has two, the two limiting protrusions are arranged on the two sides of the first waist-shaped hole and are respectively in contact with the two sides of the second waist-shaped hole.

4. A quick connect clamping device according to claim 1, wherein: A lock hole is arranged on the first flat part, a snap spring pin is arranged in the lock hole.

5. A quick connect clamping device according to claim 1, wherein: The spring sheet and the cam handle are fixedly connected through a rivet.

6. A quick connect clamping device according to claim 1, wherein: The cam portion of the cam handle is rotatably connected to the end of the core rod through a hinge structure, when the cam handle is rotated, the cam portion provides a pressure on the elastic assembly.

7. A quick connect clamping device according to claim 6, wherein: The hinge structure comprises a pivot pin, a first hinge hole arranged on the end of the core rod and a second hinge hole arranged on the cam portion, the first hinge hole and the second hinge hole are connected through the pivot pin.

8. A quick connect clamping device according to claim 7, wherein: A notch is arranged on the cam portion, the end of the core rod is clamped in the notch, the second hinge hole is arranged on the two side walls of the notch.

9. A quick connect clamping device according to claim 1, wherein: The elastic assembly comprises a plurality of butterfly springs, the plurality of butterfly springs are sleeved on the core rod in the form of superposition or apposition.

10. A quick connect clamping device according to claim 9, wherein: A second flat part is arranged on the core rod, two limiting blocks are sleeved on the second flat part, the second flat part limits the circumferential rotation of the limiting blocks, the connecting part of the second flat part and the core rod axially limits the limiting blocks away from the cam handle, and the plurality of butterfly springs are located between the two limiting blocks.

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