A nested interlocking fastener

Abstract

The utility model discloses a nested interlock type fastener relates to mechanical component technical field, including inserting nail and lock cover, and inserting nail includes plug rod, operating lever and first contact panel, and first contact panel fixedly connected between plug rod and operating lever, a plurality of annular grooves are evenly arranged at the outside wall of plug rod, and lock cover includes inserting cylinder, second contact panel and deflector, and second contact panel is connected on inserting cylinder, and deflector is evenly connected between inserting cylinder and second contact panel, and inserting nail is inserted in one end of lock cover, and the inside slide of lock cover is installed with clamping block and piston, and the outside wall of inserting nail is provided with a plurality of annular grooves, by inserting one end of inserting nail into the inside of lock cover, the pressure is added to depress piston, makes the compression of lock cover internal gas, and the compressed gas is just to increase the gas pressure in lock cover, and then through the gas pressure drive clamping block sliding insertion to the annular groove of inserting nail, prevent inserting nail from separating from lock cover, complete self -locking connection, solved the problem that the fastener of present -day mostly needs the installation of tool auxiliary.

Description

Technical Field

[0001] This utility model relates to the field of mechanical parts technology, specifically to a nested interlocking fastener. Background Technology

[0002] Fasteners are mechanical parts used to connect and secure two or more components. They are typically joined together firmly by threading, welding, riveting, or other methods. Fasteners are widely used in various engineering, construction, and manufacturing fields to ensure the stability and safety of structures.

[0003] Common fasteners include pins, bolts, screws, rivets, and clamps, but most fasteners require tools for installation, such as hammers, pliers, wrenches, welding torches, and screwdrivers. The fastener installation process relies on specific tools, meaning that installation becomes very difficult without the appropriate tools. Installing different types and sizes of fasteners may require multiple tools, increasing equipment and maintenance costs. The installation process for some fasteners can be complex, especially in situations with limited space or inaccessible locations where tools are difficult to reach. In summary, while tool-assisted fastener installation is common practice, the resulting dependence, cost, complexity, and potential risks deserve consideration during design and application. To overcome these drawbacks, a nested interlocking fastener is presented. Utility Model Content

[0004] The purpose of this invention is to provide a nested interlocking fastener to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a nested interlocking fastener, comprising a pin and a locking sleeve;

[0006] The pin is inserted into one end of the lock sleeve. Inside the lock sleeve, a locking block and a piston are slidably installed. The outer wall of the pin has multiple annular grooves that match the locking block.

[0007] One end of the pin extends into the lock sleeve and presses down the piston. The compressed gas causes the locking block to slide and engage in the annular groove of the pin, preventing the pin from disengaging from the lock sleeve.

[0008] As a preferred technical solution of this utility model, the plug includes a plug rod, a control lever and a first contact panel. The first contact panel is fixedly connected between the plug rod and the control lever, and multiple annular grooves are evenly opened on the outer side wall of the plug rod.

[0009] As a preferred embodiment of this utility model, a plurality of support plates for supporting the first contact panel are installed between the control lever and the first contact panel.

[0010] As a preferred technical solution of this utility model, the locking sleeve includes a plug, a second contact panel and a guide plate. The second contact panel is fixedly connected to the upper end of the plug, and multiple guide plates are evenly connected between the plug and the second contact panel.

[0011] As a preferred technical solution of this utility model, the second contact panel has multiple sliding grooves inside, the locking block is slidably installed in the sliding grooves, the piston is slidably installed in the insert, and the locking sleeve has a channel connecting the inside of the insert and the sliding grooves.

[0012] As a preferred embodiment of this invention, a spring is installed inside the insert to provide an upward elastic force to the piston.

[0013] As a preferred embodiment of this invention, the outer walls of the block and the piston are fitted with sealing rings for sealing.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention involves inserting one end of a pin into the inside of a lock sleeve, applying pressure to a piston to compress the gas inside the lock sleeve. This compressed gas increases the internal air pressure of the lock sleeve, which in turn drives a locking block to slide into the annular groove of the pin, preventing the pin from detaching from the lock sleeve and completing a self-locking connection. This solves the problem that most existing fasteners require tools for installation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the fastener according to an embodiment of the present utility model;

[0017] Figure 2 This is a schematic diagram of the connection structure between the insert and the locking sleeve in an embodiment of this utility model;

[0018] Figure 3 This is a schematic diagram of the insert structure according to an embodiment of the present utility model;

[0019] Figure 4 This is a cross-sectional structural diagram of the lock sleeve according to an embodiment of the present utility model;

[0020] Figure 5 This is a schematic diagram of the card block structure according to an embodiment of the present utility model.

[0021] In the diagram: 1. Insert pin; 11. Insert rod; 12. Control lever; 13. First contact panel; 131. Support plate; 2. Locking sleeve; 21. Insert cylinder; 22. Second contact panel; 23. Guide plate; 3. Locking block; 4. Piston; 41. Spring; 5. Sealing ring. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-5 This embodiment provides a nested interlocking fastener, including a pin 1 and a locking sleeve 2. The pin 1 includes a rod 11, a control lever 12 and a first contact panel 13, and the locking sleeve 2 includes a cylinder 21, a second contact panel 22 and a guide plate 23.

[0024] Specifically, such as Figure 3 As shown, the first contact panel 13 is fixedly connected to the lower end of the insertion rod 11, and the control lever 12 is fixedly connected to the lower end of the first contact panel 13. Figure 4 As shown, the second contact panel 22 is fixedly connected to the upper end of the insert 21. Multiple guide plates 23 are arranged in a circular array around the central axis of the insert 21. One side of each guide plate 23 is fixedly connected to the outer wall of the insert 21, and the upper end of each guide plate 23 is fixedly connected to the lower end of the second contact panel 22. The insert rod 11 can pass through the central hole of the second contact panel 22 and be inserted into the insert 21.

[0025] like Figure 2 As shown, to prevent the insertion rod 11 from detaching from the insertion cylinder 21, a locking block 3 is slidably installed inside the second contact panel 22. Multiple annular grooves are formed on the outer wall of the insertion rod 11, and these grooves are evenly arranged in a straight line. Specifically, as shown... Figure 4 As shown, multiple sliding grooves are provided at the center hole of the second contact panel 22. The multiple sliding grooves are evenly distributed in a circular array with the central axis as the center. The locking block 3 is slidably installed in the sliding groove. After the locking block 3 extends out of the groove and is inserted into the annular groove on the outer side wall of the insertion rod 11, the insertion rod 11 can be limited to prevent the insertion rod 11 from falling off the insertion tube 21.

[0026] like Figure 4As shown, in order to control the sliding of the locking block 3, a piston 4 and a spring 41 are installed inside the insert 21. The spring 41 is located at the lower end of the piston 4, and applies an upward elastic force to the piston 4 through the spring 41. The lock sleeve 2 has a channel inside, and the two ends of the channel are connected to the inside of the insert 21 and the slide groove of the second contact panel 22, respectively. After the insert rod 11 is inserted into the insert 21, it applies downward pressure to the piston 4, thereby compressing the gas below the piston 4 in the insert 21, which increases the air pressure in the channel of the lock sleeve 2. When the thrust generated by the air pressure is greater than the friction between the locking block 3 and the slide groove, it can drive the locking block 3 to move, thereby causing one end of the locking block 3 to extend out from the groove opening and finally insert into the annular groove of the insert rod 11, so that the insert pin 1 and the lock sleeve 2 complete self-locking. At this time, the insert pin 1 cannot be separated from the lock sleeve 2.

[0027] Two connecting parts have through holes. A pin 1 passes through the through hole and connects to a locking sleeve 2, thus connecting the two parts and preventing them from separating. To ensure the two parts fit together, a first contact panel 13 and a second contact panel 22 are needed to clamp them. Therefore, as... Figure 5 As shown, the end of the locking block 3 extending out of the slide groove has an inclined surface, which slopes upwards. After the insertion rod 11 is inserted into the insertion cylinder 21, the edge of the annular groove of the insertion rod 11 applies pressure to the inclined surface of the locking block 3, thereby causing the locking block 3 to retract into the slide groove. At this time, the gas in the channel is compressed. After the insertion rod 11 is inserted into the desired position, the locking block 3 is pushed out of the slide groove by the air pressure and engages in the annular groove aligned with the insertion rod 11.

[0028] Because there is a certain gap between the ring grooves, a gap will also be generated between the two parts. In order to ensure that the parts fit tightly, rubber rings can be installed at the through holes of the two parts. The rubber rings fill the gaps between the part and the first contact panel 13 and between the other part and the second contact panel 22, and the elasticity of the rubber rings makes the two parts fit together.

[0029] like Figure 3 As shown, a support plate 131 is fixedly connected to the side wall of the control lever 12 and the upper end of the first contact panel 13 at the included angle. Multiple support plates 131 are provided, and the multiple support plates 131 are evenly distributed in a circular array with the central axis of the insertion rod 11 as the center. When pressure is applied to the control lever 12 to drive the insertion rod 11 to be inserted into the insertion cylinder 21, the pressure of the control lever 12 is evenly transmitted to the first contact panel 13 through the support plate 131, so that the first contact panel 13 fits the component.

[0030] To maintain a tight seal for the gas within the channel, annular grooves are formed on the outer walls of both the locking block 3 and the piston 4. Sealing rings 5 ​​are installed within these grooves on both the locking block 3 and the piston 4. The function of the sealing rings 5 ​​is to fill the gaps between the locking block 3 and the inner wall of the groove between the locking block 3 and the second contact panel 22, and between the piston 4 and the inner wall of the insert 21. This design effectively prevents gas leakage, thus ensuring the tightness of the gas within the channel. Furthermore, the sealing rings 5 ​​are made of temperature- and corrosion-resistant rubber to ensure a good sealing effect. To further enhance the sealing performance, multiple sealing rings 5 ​​can be designed on the outer walls of the locking block 3 and the piston 4 to form a multi-layered sealing structure. This design not only improves the reliability of the seal but also provides additional protection in the event of failure of one sealing ring 5, ensuring that gas does not leak.

[0031] Compared to existing fasteners that mostly require auxiliary tools for installation, the pin 1 and locking sleeve 2 connect two parts without tools, eliminating tool dependence. Users can easily complete the installation without specialized tools, greatly improving ease of use. The design of pin 1 and locking sleeve 2 incorporates a self-locking mechanism, automatically locking upon pressing to ensure a stable connection. Furthermore, the simplified installation process not only saves time but also reduces the skill requirements for operators, allowing even non-professionals to quickly learn and improve work efficiency. Secondly, the tool-free connection of pin 1 and locking sleeve 2 reduces the risk of damage due to improper tool use and safety hazards caused by improper installation, ensuring the reliability and security of the connection. In addition, this design allows for easy operation in confined or hard-to-reach spaces, making it more adaptable and suitable for various application scenarios.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A nested interlocking fastener, characterized in that, include: Pin (1) and lock sleeve (2); The pin (1) is inserted into one end of the lock sleeve (2). The lock sleeve (2) has a locking block (3) and a piston (4) slidably installed inside. The outer side wall of the pin (1) has multiple annular grooves that match the locking block (3). One end of the pin (1) extends into the lock sleeve (2) and presses down the piston (4). The compressed gas drives the locking block (3) to slide into the annular groove of the pin (1) to prevent the pin (1) from dislodging from the lock sleeve (2).

2. The nested interlocking fastener according to claim 1, characterized in that: The insert (1) includes an insert rod (11), a control lever (12) and a first contact panel (13). The first contact panel (13) is fixedly connected between the insert rod (11) and the control lever (12). A plurality of annular grooves are evenly opened on the outer side wall of the insert rod (11).

3. A nested interlocking fastener according to claim 2, characterized in that: A plurality of support plates (131) for supporting the first contact panel (13) are installed between the control lever (12) and the first contact panel (13).

4. A nested interlocking fastener according to claim 1, characterized in that: The locking sleeve (2) includes a plug (21), a second contact panel (22) and a guide plate (23). The second contact panel (22) is fixedly connected to the upper end of the plug (21), and a plurality of the guide plates (23) are evenly connected between the plug (21) and the second contact panel (22).

5. A nested interlocking fastener according to claim 4, characterized in that: The second contact panel (22) has multiple sliding grooves inside, the locking block (3) is slidably installed in the sliding grooves, the piston (4) is slidably installed in the insert (21), and the locking sleeve (2) has a channel inside that connects the inside of the insert (21) and the sliding grooves.

6. A nested interlocking fastener according to claim 5, characterized in that: The insert (21) is equipped with a spring (41) for providing an upward force to the piston (4).

7. A nested interlocking fastener according to claim 6, characterized in that: The outer walls of the block (3) and piston (4) are fitted with sealing rings (5) for sealing.

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