Adjustable threaded connection fastening assembly

Abstract

The invention belongs to the technical field of mechanical connection fasteners, and discloses an adjustable threaded connection fastening assembly which comprises a stud, a hollow column is fixedly mounted at the top of the stud, a first mounting block is fixedly mounted at the top of the hollow column, and a second mounting block is arranged above the first mounting block. A reinforcing mechanism is arranged in the hollow column, a buckling mechanism is arranged between the first mounting block and the second mounting block, and through arrangement of the transmission assembly, when the part connecting position is loosened, the first rotating rod can be driven to rotate by rotating the second mounting block, and then through threaded fit of a first threaded groove and a second moving block, the first rotating rod can be driven to rotate; and an inverted trapezoidal convex block on the outer wall of the second moving block is in sliding connection with a sliding groove, so that the second moving block can push the first moving block and the extension block to move outwards and be tightly attached to the inner wall of the component, the automatic fastening effect is achieved, and the connection stability is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of mechanical connection fasteners, in particular to an adjustable threaded connection fastening assembly. Background Art

[0002] Fasteners are a general term for mechanical parts that are used to tightly connect two or more parts (or components) into a complete whole. In the market, fasteners are also called standard parts, covering a variety of threaded connectors, nuts, and many types of matching flat washers, spring washers, retaining rings, pins, etc. Fasteners mainly achieve tight connection of parts through threaded connection. This connection method has the advantages of simple structure, reliable connection, and easy disassembly and assembly.

[0003] Threaded connection technology generally has the problem of loosening when it is not tightened regularly for a long time. This problem is more significant when the equipment is subjected to external force impact. The main reason for the loosening is that the preload force of the threaded connection is gradually lost under the action of vibration and impact load, causing the connection to become unstable. At present, although the industry has adopted anti-loosening methods such as gaskets to increase friction, double nuts to increase locking force, and injecting anti-loosening glue to increase adhesion, these methods are still difficult to meet the long-term anti-loosening requirements under continuous impact environments in actual applications. Gaskets may be deformed and damaged due to long-term use or external forces, and the double nut tightening method puts additional requirements on installation space and material costs, while the anti-loosening glue may age and fail over time. Therefore, the existing anti-loosening means still often loosen when dealing with continuous impact and long-term use scenarios, which poses a potential threat to the stability and safety of the equipment. Therefore, they need to be improved and optimized. Summary of the invention

[0004] In order to solve the problem that the threaded connection technology proposed in the above background technology is easy to loosen under long-term irregular tightening and external force impact conditions, and the existing anti-loosening methods are difficult to meet the long-term anti-loosening requirements, posing a potential threat to equipment stability and safety, the present invention provides an adjustable threaded connection fastening assembly.

[0005] To achieve the above object, the present invention provides the following technical solutions: an adjustable threaded connection fastening assembly, comprising a stud, a hollow column fixedly installed on the top of the stud, a mounting block 1 fixedly installed on the top of the hollow column, a mounting block 2 arranged above the mounting block 1, a reinforcement mechanism arranged inside the hollow column, and a buckle mechanism arranged between the mounting block 1 and the mounting block 2; The reinforcement mechanism includes multiple groups of adjustment components and a transmission component arranged around the hollow column, the adjustment component includes a slide groove opened on the outer wall of the hollow column, a moving block 1 is slidably installed on the inner wall of the slide groove, an extension block is fixedly installed on the outer wall of one side of the moving block 1, a threaded groove 2 is opened on the outer wall of the extension block, a guide block is fixedly installed on the top of the hollow column, a guide groove is opened at the bottom of the extension block, and the guide groove is adapted to the guide block.

[0006] Preferably, a sliding groove is respectively formed on one inward side of the four moving blocks, the tops of the four sliding grooves respectively extend out of the corresponding moving blocks, and the bottoms of the four sliding grooves do not penetrate the corresponding moving blocks.

[0007] Preferably, the transmission assembly includes a rotating rod 1 rotatably mounted on the inner wall of the bottom of the hollow column, the top of the rotating rod 1 passes through the mounting block 1 and the mounting block 2 in sequence, a thread groove 1 is provided on the outer wall of the rotating rod 1, a moving block 2 is threadedly sleeved on the outer wall of the thread groove 1, and four trapezoidal protrusions are equidistantly arranged on the outer wall of the moving block 2, the four trapezoidal protrusions are installed in an inverted trapezoidal shape, and the four trapezoidal protrusions are respectively slidably connected to the corresponding sliding grooves.

[0008] Preferably, the outer shapes of the four moving blocks one are regular trapezoids, and the inner side is inclined, and the groove shapes of the four sliding grooves are consistent with the outer shape of the moving block one.

[0009] Preferably, two limiting protrusions are fixedly installed on the top outer wall of the rotating rod 1, and the two limiting protrusions are symmetrically distributed. A limiting circular plate is fixedly installed on the top of the rotating rod 1, and the diameter of the limiting circular plate is larger than the diameter of the rotating rod 1.

[0010] Preferably, the snap-fit ​​mechanism includes a mounting groove 1 provided at the top of mounting block 1 and a mounting groove 2 provided at the bottom of mounting block 2, two sets of identical mounting components 1 are arranged inside the mounting groove 1, the mounting component 1 includes a rotating rod 2 rotatably installed on the inner wall of the mounting groove 1, and two arc blocks are hingedly installed on the outer wall of the rotating rod 2.

[0011] Preferably, four fixed blocks are fixedly installed on the bottom inner wall of the mounting groove one, and sliding rods are fixedly installed on the sides of two corresponding fixed blocks close to each other, and moving blocks three are slidably installed on the outer walls of the sliding rods.

[0012] Preferably, the tops of the two moving blocks three are respectively hingedly mounted with connecting rods, and the tops of the two connecting rods are respectively hingedly connected to the corresponding arc blocks.

[0013] Preferably, the two moving blocks three are elastically connected to the sides of the corresponding fixed blocks close to each other through springs, and the two sliding rods are respectively located in the middle of the corresponding springs.

[0014] Preferably, two sets of identical second mounting components are arranged inside the second mounting groove, and the second mounting component includes a clamping block fixedly mounted on the top inner wall of the second mounting groove.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention realizes the functions of tightening and adjusting through the design of the transmission component. When the connection between the components becomes loose, the rotating rod one can be driven to rotate by rotating the mounting block two, and then the moving block two can be moved in the axial direction through the cooperation between the thread groove one and the thread of the moving block two. The inverted trapezoidal protrusion on the outer wall of the moving block two is slidably connected with the sliding groove, so that the moving block two can push the moving block one and the expansion block to move outward and fit tightly with the inner wall of the component, thereby realizing the effect of automatic tightening, improving the stability of the connection, reducing the need for manual intervention, and making the tightening process more efficient and convenient.

[0016] The present invention realizes a stable connection through a snap mechanism between the mounting block one and the mounting block two. The mounting assembly one and the mounting assembly two in the snap mechanism cooperate with each other through components such as the rotating rod two, the arc block, the sliding rod, the moving block three, the connecting rod and the spring, so that the mounting block one and the mounting block two can form a whole, which effectively prevents the loosening of the connection. When the connection becomes loose, the mounting block two is moved and the constraint of the clamping block on the arc block is released. The elastic restoring force of the spring will push the moving block three and the connecting rod, so that the arc block automatically adjusts its position and re-coordinates with the clamping block, thereby realizing the function of automatic tightening, which not only improves the stability of the connection, but also enhances the durability and reliability of the fastening assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a schematic diagram of the front cross-sectional structure of the present invention; Figure 3 It is a schematic diagram of the side cross-sectional structure of the buckle mechanism of the present invention; Figure 4 This is a schematic diagram of a partial explosion structure of the buckle mechanism of the present invention; Figure 5 for Figure 4 A schematic diagram of the partially enlarged structure at center A; Figure 6 It is a schematic diagram of the combined structure of the local reinforcement mechanism of the present invention; Figure 7 It is a structural schematic diagram of the reinforcement mechanism of the present invention; Figure 8 It is a schematic diagram of the structure of the moving block 1 and the moving block 2 of the present invention; Fig. 9 It is a schematic diagram of the front cross-sectional structure of the reinforcement mechanism of the present invention; Fig.10 It is a schematic diagram of the explosion structure of the hollow column, the moving block 1 and the moving block 2 of the present invention.

[0018] In the figure: 1. stud; 2. hollow column; 201. slide groove; 202. guide block; 203. fan-shaped column; 3. moving block one; 301. sliding groove; 4. rotating rod one; 401. threaded groove one; 402. limiting protrusion; 403. limiting circular plate; 5. moving block two; 6. extension block; 601. threaded groove two; 7. mounting block one; 701. mounting groove one; 8. mounting block two; 801. mounting groove two; 802. clamping block; 9. fixed block; 901. slide rod; 10. moving block three; 11. spring; 12. rotating rod two; 1201. arc block; 13. connecting rod. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] like Figures 1 to 10 As shown, the present invention provides an adjustable threaded connection fastening assembly, comprising a stud 1, a hollow column 2 is fixedly installed on the top of the stud 1, a mounting block 7 is fixedly installed on the top of the hollow column 2, a mounting block 8 is arranged above the mounting block 7, a reinforcement mechanism is arranged inside the hollow column 2, and a buckle mechanism is arranged between the mounting block 7 and the mounting block 8; The reinforcement mechanism includes a plurality of adjustment components and a transmission component arranged around the hollow column. The adjustment component includes a slide groove 201 provided on the outer wall of the hollow column 2. A moving block 3 is slidably installed on the inner wall of the slide groove 201. An extension block 6 is fixedly installed on the outer wall of one side of the moving block 3. A threaded groove 2601 is provided on the outer wall of the extension block 6. A guide block 202 is fixedly installed on the top of the hollow column 2. A guide groove is provided at the bottom of the extension block 6. The guide groove is adapted to the guide block 202. Sliding grooves 301 are respectively provided on the inner side of the four moving blocks 3. The tops of the four sliding grooves 301 extend out of the corresponding moving blocks 3 respectively. The bottoms of the four sliding grooves 301 do not penetrate the corresponding moving blocks 3. The transmission component includes a rotating rod 4 rotatably installed on the inner wall of the bottom of the hollow column 2. The top of rod 14 passes through mounting block 17 and mounting block 28 in sequence, a threaded groove 1401 is provided on the outer wall of rotating rod 14, a moving block 25 is threadedly sleeved on the outer wall of threaded groove 1401, four trapezoidal protrusions are equidistantly provided on the outer wall of moving block 25, the four trapezoidal protrusions are installed in an inverted trapezoidal shape, and the four trapezoidal protrusions are respectively slidably connected with the corresponding sliding grooves 301, the outer shapes of the four moving blocks 3 are regular trapezoidal, and the inner side is inclined, the groove shape of the four sliding grooves 301 is consistent with the outer shape of the moving block 3, two limiting protrusions 402 are fixedly installed on the top outer wall of rotating rod 14, the two limiting protrusions 402 are symmetrically distributed, and a limiting circular plate 403 is fixedly installed on the top of rotating rod 14, and the diameter of the limiting circular plate 403 is larger than the diameter of rotating rod 14.

[0021] The above scheme is adopted: the transmission and conversion of power is realized through the rotation of the transmission component rotating rod 1 4, and the axial movement of the moving block 2 5 is realized when the rotating rod 1 4 rotates through the threaded cooperation of the threaded groove 1 401 and the thread of the moving block 2 5, and the sliding connection between the inverted trapezoidal protrusion on the outer wall of the moving block 2 5 and the sliding groove 301 not only increases the stability of the transmission, but also enables the moving block 2 5 to push the moving block 1 3 to move accordingly during the movement process. The symmetrical distribution design of the two limiting protrusions 402 effectively limits the axial movement of the rotating rod 1 4 and prevents it from falling off during the transmission process; and the setting of the limiting circular plate 403 further increases the stability of the rotating rod 1 4 at the top position, ensuring the reliability of the transmission; When the mounting block 28 is subjected to a rotational force, the force is transmitted to the thread groove 1 401 through the rotating rod 1 4. Since the thread groove 1 401 cooperates with the thread of the moving block 2 5, the rotation of the rotating rod 1 4 will be converted into the axial movement of the moving block 2 5. As the moving block 2 5 moves, the inverted trapezoidal protrusion on its outer wall will slide along the sliding groove 301, so that the moving block 2 5 can push the moving block 3 to move accordingly; since the moving block 3 is a regular trapezoid and the inner side is inclined, when the trapezoidal protrusion contacts it, an outward thrust will be generated, so that the moving block 1 3 and the expansion block 6 connected thereto can move outward and clamp with the inner wall of the component; in the entire transmission process, the limiting protrusion 402 and the limiting circular plate 403 play an important role in ensuring; the limiting protrusion 402 limits the axial movement of the rotating rod 1 4 and prevents it from falling off during the transmission process; and the limiting circular plate 403 ensures the stability of the rotating rod 1 4 at the top position, making the transmission more reliable; By rotating the mounting block 2 8 or the stud 1, the component is connected to the fastening assembly through a threaded connection. The moving block 2 5 drives the trapezoidal protrusion to move through the drive of the transmission assembly, pushing the moving block 1 3 and the expansion block 6 to expand outward, and closely fit with the inner wall of the component to achieve a fastening effect. When the fastening assembly reaches the required fastening force, the mounting block 1 7 and the mounting block 2 8 are locked together through the cooperation of the buckle mechanism to prevent loosening; When the connection between the components becomes loose, the transmission assembly can adjust the position of the moving block 3 and the expansion block 6 so that they are clamped against the inner wall of the component, thereby realizing the automatic tightening function and improving the stability of the connection.

[0022] like Figures 2 to 5 As shown, the buckle mechanism includes a mounting groove 701 provided at the top of the mounting block 7 and a mounting groove 801 provided at the bottom of the mounting block 8. Two sets of identical mounting components 1 are arranged inside the mounting groove 701. The mounting component 1 includes a rotating rod 12 rotatably installed on the inner wall of the mounting groove 701. Two arc blocks 1201 are hingedly installed on the outer wall of the rotating rod 12. Four fixing blocks 9 are fixedly installed on the inner wall of the bottom of the mounting groove 701. The corresponding two fixing blocks 9 are fixedly installed on the side close to each other with a sliding rod 901. The sliding rod 90 1 are slidably mounted on the outer walls of the two moving blocks 10, and the tops of the two moving blocks 10 are hingedly mounted with connecting rods 13, and the tops of the two connecting rods 13 are hingedly connected to the corresponding arc blocks 1201, respectively. The two moving blocks 10 and the corresponding fixed blocks 9 are elastically connected to each other on one side through springs 11, and the two sliding rods 901 are respectively located in the middle of the corresponding springs 11. Two groups of identical mounting components 2 are arranged inside the mounting groove 801, and the mounting component 2 includes a clamping block 802 fixedly mounted on the inner wall of the top of the mounting groove 801.

[0023] The above scheme is adopted: through the cooperation of the mounting block 1 7 and the mounting block 2 8, a stable connection is achieved. The design of the mounting groove 1 701 and the mounting groove 2 801 provides space for the installation of the mounting component 1 and the mounting component 2. The rotating rod 2 12 in the mounting component 1 and the two arc blocks 1201 on the outer wall thereof can be flexibly rotated through hinged installation to adapt to the needs of the buckle mechanism in different states. The sliding of the moving block 3 10 on the sliding rod 901 and the hinged connection with the arc block 1201 through the connecting rod 13 enable the entire mechanism to produce corresponding deformation when subjected to force, thereby playing a role of tightening or releasing. The setting of the spring 11 provides a reset force for the moving block 3 10. When an external force acts on the buckle mechanism, the spring 11 can return the buckle mechanism to its initial state through its elastic restoring force. In the initial state, the cooperation between the clamping block 802 and the arc block 1201 enables the mounting block 1 7 and the mounting block 2 8 to form a whole, thereby achieving a stable connection and effectively preventing the connection from loosening. When the connection becomes loose, the constraint of the clamping block 802 on the arc block 1201 can be released by moving the mounting block 2 8. The elastic restoring force of the spring 11 will push the moving block 3 10 and the connecting rod 13, so that the arc block 1201 automatically adjusts its position and re-cooperates with the clamping block 802, thereby achieving the function of automatic tightening.

[0024] The working principle and use process of the present invention: The mounting block 1 7 and the mounting block 2 8 are clamped in the middle of the corresponding arc block 1201 through the clamping block 802 to form a whole, and the stud 1 is connected with the hollow column 2, the fan-shaped column 203 and the mounting block 1 7 to be threadedly installed; Pick up the stud 1, align it with the hole entrance on the part to be connected, use the tool to rotate the installation block 7, and drive the fan-shaped column 203, the hollow column 2 and the stud 1 to rotate in turn through the installation block 7, and the thread setting of the stud 1 and the thread groove 2 601 can stably connect the parts to be connected; If the threaded connection is loosened due to external force or long-term use, the installation block 28 is moved to move the installation block 28 away from the installation block 1 7, so that the two arc blocks 1201 corresponding to the two clamping blocks 802 are away from each other, and the installation block 28 is rotated by a tool. The two limiting protrusions 402 on the outer wall of the rotating rod 1 4 are set, so that the installation block 28 can slide on the outer wall of the hollow column 2, and at the same time, the installation block 28 can also drive the rotating rod 1 4 to rotate. The threaded connection between the thread groove 1 401 and the moving block 25 is converted into the horizontal movement of the moving block 25 along the axis of the rotating rod 1 4. The sliding connection between the moving block 25 and the four sliding grooves 301 is realized. When the moving block 25 and the stud 1 are getting closer and closer, the inclined surface design of the moving block 1 3 will cause the moving block 25 to push the four rotating rods 1 4 to move outward, so that the four moving blocks 1 3 drive the corresponding expansion blocks 6 to move together, so that they can be stuck with the inner wall of the loose component to achieve the loosening effect. In order to prevent the installation block 28 from rotating accidentally, causing the rotation of the rotating rod 14 to separate the expansion block 6 from the inner wall of the preset hole, the installation block 28 needs to be pressed toward the installation block 17. Due to the special design of the thread groove 1401, the two clamping blocks 802 at the bottom of the installation block 28 will return to the initial position and the top of the two installation components 1 after each rotation. During the movement of the installation block 28, the bottom of the clamping block 802 pre-contacts the two arc blocks 1201 and squeezes the two arc blocks 1201. Since the two arc blocks 1201 are both rotatably connected to the stud 1, the extrusion force drives The movable arc block 1201 transmits the force to the moving block three 10 through the connecting rod 13. The two moving blocks three 10 move in opposite directions on the outer wall of the slide bar 901 and squeeze the corresponding springs 11, so that the two arc blocks 1201 are opened so that the clamping block 802 can enter the middle of the two arc blocks 1201, and then the squeezing of the mounting block two 8 is released to reset the two springs 11. The two moving blocks three 10 and the spring 11 push the corresponding arc blocks 1201 to move closer to each other to clamp the clamping block 802 in the middle, so that the mounting block one 7 and the mounting block two 8 form a whole again to prevent the rotation of the mounting block two 8 due to external force.

[0025] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An adjustable threaded fastening assembly, comprising a stud, characterized in that: A hollow column is fixedly installed on the top of the stud, a mounting block 1 is fixedly installed on the top of the hollow column, a mounting block 2 is arranged above the mounting block 1, a reinforcement mechanism is arranged inside the hollow column, and a snap mechanism is arranged between the mounting block 1 and the mounting block 2; The reinforcement mechanism includes multiple groups of adjustment components and a transmission component arranged around the hollow column, the adjustment component includes a slide groove opened on the outer wall of the hollow column, a moving block 1 is slidably installed on the inner wall of the slide groove, an extension block is fixedly installed on the outer wall of one side of the moving block 1, a threaded groove 2 is opened on the outer wall of the extension block, a guide block is fixedly installed on the top of the hollow column, a guide groove is opened at the bottom of the extension block, and the guide groove is adapted to the guide block.

2. The adjustable threaded connection fastening assembly according to claim 1, characterized in that: The four moving blocks are respectively provided with sliding grooves on one side facing inward, the tops of the four sliding grooves respectively extend out of the corresponding moving blocks, and the bottoms of the four sliding grooves do not penetrate the corresponding moving blocks.

3. The adjustable threaded connection fastening assembly according to claim 1, characterized in that: The transmission assembly includes a rotating rod 1 rotatably mounted on the inner wall of the bottom of the hollow column, the top of the rotating rod 1 passes through the mounting block 1 and the mounting block 2 in sequence, a thread groove 1 is opened on the outer wall of the rotating rod 1, a moving block 2 is threadedly sleeved on the outer wall of the thread groove 1, and four trapezoidal protrusions are equidistantly arranged on the outer wall of the moving block 2, the four trapezoidal protrusions are installed in an inverted trapezoidal shape, and the four trapezoidal protrusions are slidably connected to the corresponding sliding grooves respectively.

4. The adjustable threaded connection fastening assembly according to claim 2, characterized in that: The outer shapes of the four moving blocks 1 are regular trapezoids, and the inner side is inclined. The shapes of the four sliding grooves are consistent with the outer shape of the moving block 1.

5. The adjustable threaded connection fastening assembly according to claim 3, characterized in that: Two limiting protrusions are fixedly installed on the top outer wall of the rotating rod 1, and the two limiting protrusions are designed to be symmetrically distributed. A limiting circular plate is fixedly installed on the top of the rotating rod 1, and the diameter of the limiting circular plate is larger than the diameter of the rotating rod 1.

6. The adjustable threaded connection fastening assembly according to claim 1, characterized in that: The buckle mechanism includes a mounting groove 1 opened at the top of the mounting block 1 and a mounting groove 2 opened at the bottom of the mounting block 2. Two sets of identical mounting components 1 are arranged inside the mounting groove 1. The mounting component 1 includes a rotating rod 2 rotatably installed on the inner wall of the mounting groove 1, and two arc blocks are hingedly installed on the outer wall of the rotating rod 2.

7. The adjustable threaded connection fastening assembly according to claim 6, characterized in that: Four fixed blocks are fixedly installed on the bottom inner wall of the installation groove one, and sliding rods are fixedly installed on the sides of two corresponding fixed blocks close to each other, and moving blocks three are slidably installed on the outer walls of the sliding rods.

8. The adjustable threaded connection fastening assembly according to claim 7, characterized in that: The tops of the two moving blocks three are respectively hingedly mounted with connecting rods, and the tops of the two connecting rods are respectively hingedly connected to the corresponding arc blocks.

9. The adjustable threaded connection fastening assembly according to claim 7, characterized in that: The two moving blocks three are elastically connected to the sides of the corresponding fixed blocks that are close to each other through springs, and the two sliding rods are respectively located in the middle of the corresponding springs.

10. The adjustable threaded fastening assembly according to claim 6, characterized in that: Two sets of identical second mounting components are arranged inside the second mounting groove, and the second mounting component includes a clamping block fixedly mounted on the top inner wall of the second mounting groove.

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