Quick-release fastening bolt device with variable shaft diameter

Abstract

A quick-release fastening bolt device with a variable shaft diameter comprises a variable-diameter screw-in nut, a baffle with a spring, a center sleeve, a center shaft, an expansion fastening clamp, a displacement variable-diameter taper pin and a taper pin center spring, the variable-diameter screw-in nut is connected with the baffle with the spring, one end of the center shaft penetrates through the baffle with the spring to be connected with the variable-diameter screw-in nut, and the other end of the center shaft penetrates through the baffle with the spring to be connected with the center sleeve. The other end of the central shaft penetrates through the expansion fastening clamp and then extends out of the expansion fastening clamp; the center shaft is sleeved with a taper pin center spring, a displacement reducing taper pin used for supporting one end of the taper pin center spring is arranged on the baffle with the spring, the other end of the taper pin center spring makes contact with the top of a boss arranged on the center shaft, and the bottom of the boss makes contact with an expansion fastening clamp. The central sleeve is nested on the displacement reducing taper pin and the boss; and a plurality of groups of expansion fastening shaft rings for clamping the central shaft are arranged in the expansion fastening clamp. The device has a variable shaft diameter function, can be used for clamping and fixing assembly parts with different shaft hole specifications, and is flexible, efficient and high in applicability.

Description

Technical Field

[0001] The invention relates to the technical field of shaft hole assembly, and in particular to a quick-release fastening latch device with a variable shaft diameter. Background Art

[0002] In the process of mechanical assembly, bolt connection assembly is one of the most common assembly methods. It has the characteristics of simple structure and wide applicability. However, in cases where frequent disassembly and assembly are required or temporary fixation is required before assembly, workers use the original bolt and nut device, which results in slow assembly time and low efficiency.

[0003] At the same time, if the pin is customized for a single shaft diameter, the universal pin can only be used for shaft hole assemblies of fixed size. If shaft hole assemblies of multiple shaft diameters need to be temporarily fixed or clamped, the cost will be greatly increased, and the function is single, and it is not conducive to storage when the number is large. Summary of the invention

[0004] The technical problem solved by the present invention is to provide a quick-release fastening latch device with a variable shaft diameter to solve the problems in the above-mentioned background technology.

[0005] The technical problem solved by the present invention is achieved by adopting the following technical solutions: A quick-release fastening pin device with variable shaft diameter, comprising a variable diameter screw-in nut, a spring-belted baffle, a center sleeve, a center shaft, an expansion fastening clamp, a shifted variable diameter cone pin and a cone pin center spring, wherein the variable diameter screw-in nut is connected to the spring-belted baffle, one end of the center shaft passes through the spring-belted baffle and is connected to the variable diameter screw-in nut, and the other end of the center shaft passes through the expansion fastening clamp and then extends out of the expansion fastening clamp; a cone pin center spring is sleeved on the center shaft, and a spring baffle is provided on the spring baffle for supporting one end of the cone pin center spring The shift reducing cone pin, the other end of the cone pin center spring is in contact with the top of the boss arranged on the central shaft, and the bottom of the boss is in contact with the expansion fastening clamp; one end of the center sleeve is nested on the shift reducing cone pin, and the other end of the center sleeve is nested on the boss; the expansion fastening clamp is made of elastic material, and a plurality of groups of expansion fastening shaft rings for clamping the central shaft are arranged in the expansion fastening clamp, and the axial diameter of the shift reducing cone pin and the axial diameter of the boss are symmetrically arranged with respect to the cone pin center spring.

[0006] In the present invention, a buckle ring seat is provided on the variable diameter screw-in nut, and a buckle ring is provided on the buckle ring seat for pulling the variable diameter screw-in nut.

[0007] In the present invention, the reducer screw-in nut is provided with an internal thread, and the central shaft is provided with an external thread that meshes with the internal thread for connection.

[0008] In the present invention, the variable diameter screw-in nut is connected to the spring-belt baffle through a spring, and the variable diameter screw-in nut and the spring-belt baffle are respectively provided with spring position notches for installing the spring.

[0009] In the present invention, a pin hole for inserting a fixing cone pin is provided on the central sleeve.

[0010] In the present invention, one end of the central shaft is cylindrical, and a boss is provided at the other end of the central shaft, and the shaft diameter of the boss gradually increases from contact with the supporting cone pin center spring until contact with the expansion fastening clamp.

[0011] In the present invention, the shaft diameter of the shifting variable-diameter cone pin gradually decreases from the end with the spring baffle until it contacts with the center spring of the cone pin.

[0012] In the present invention, the clamping function of the quick-release fastening pin device relies on an expansion fastening clamp, the shaft diameter of which gradually decreases from the inside to the outside. After being inserted into the central shaft, the clamping function is achieved through the elastic deformation of the expansion fastening clamp, which is convenient and rapid. The expansion fastening shaft ring is divided into four groups, which is convenient for increasing the elastic deformation of the shaft ring. Beneficial Effects

[0013] 1) The present invention has a simple structure, no complex structure and shape, is easy to mass produce, has low production cost and equipment, and is flexible and convenient; 2) The present invention is convenient and efficient to operate, and the assembly, fastening and removal processes are simple and quick. It saves time and effort compared to the traditional bolt and nut tightening, and significantly improves work efficiency; 3) The present invention has the function of changing the shaft diameter, and can clamp and fix assembly parts with different shaft hole specifications, which is flexible, efficient and highly applicable; 4) The present invention has a wide range of applications and is applicable to screw-connected assembly parts in general mechanical fields, and is particularly suitable for use in scenarios where bolt assembly parts need to be repeatedly disassembled or temporarily clamped. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 An isometric view of a preferred embodiment of the present invention.

[0015] Figure 2 It is a front view of a preferred embodiment of the present invention.

[0016] Figure 3 It is a cross-sectional view of a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0017] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below with reference to specific diagrams.

[0018] See also Figures 1 to 3A quick-release fastening pin device with variable shaft diameter comprises a variable diameter screw-in nut 1, a spring baffle 2, a center sleeve 3, a center shaft 4, an expansion fastening clamp 5, a shifted variable diameter cone pin 6 and a cone pin center spring 7, wherein the variable diameter screw-in nut 1 is connected to the spring baffle 2, the center shaft 4 One end passes through the spring baffle 2 and is connected to the reducer screw-in nut 1, and the other end of the center shaft 4 passes through the expansion fastening clamp 5 and then extends out of the expansion fastening clamp 5; a cone pin center spring 7 is sleeved on the center shaft 4, and a shifting reducing cone pin 6 for supporting one end of the cone pin center spring 7 is provided on the spring baffle 2, the other end of the cone pin center spring 7 contacts the top of the boss provided on the center shaft 4, and the bottom of the boss contacts the expansion fastening clamp 5; one end of the center sleeve 3 is nested on the shifting reducing cone pin 6, and the other end of the center sleeve 3 is nested on the boss; the expansion fastening clamp 5 is made of elastic material, and a plurality of groups of expansion fastening shaft rings for clamping the center shaft 4 are provided in the expansion fastening clamp 5.

[0019] In this embodiment, a buckle ring seat is provided on the variable diameter screw-in nut 1 , and a buckle ring is provided on the buckle ring seat for pulling the variable diameter screw-in nut 1 .

[0020] In this embodiment, the reducer screw-in nut 1 is provided with an internal thread, and the central shaft 4 is provided with an external thread that meshes with the internal thread for connection.

[0021] In this embodiment, the reducing screw-in nut 1 is connected to the spring baffle 2 via a spring, and spring position notches are respectively provided on the reducing screw-in nut 1 and the spring baffle 2 for installing the spring.

[0022] In this embodiment, a pin hole for inserting a fixing cone pin is provided on the central sleeve 3 .

[0023] In this embodiment, one end of the central shaft 4 is cylindrical, and a boss is provided at the other end of the central shaft 4 , and the axial diameter of the boss gradually increases from contact with the supporting cone pin center spring 7 until contact with the expansion fastening clamp 5 .

[0024] In this embodiment, the axial diameter of the shifted variable-diameter cone pin 6 gradually decreases from the end of the spring baffle 2 until it contacts the cone pin center spring 7.

[0025] In this embodiment, the clamping function of the quick-release fastening pin device relies on the expansion fastening clamp 5, the shaft diameter of which gradually decreases from the inside to the outside. After being inserted into the central shaft 4, the clamping function is achieved through the elastic deformation of the expansion fastening clamp 5, which is convenient and rapid, and the expansion fastening shaft ring is divided into four groups, which is convenient for increasing the elastic deformation of the shaft ring.

[0026] In this embodiment, the specific steps are as follows: 1. Pre-assemble the assembly parts to be assembled and tightened so that the axes are aligned; 2. Assemble the parts of the variable diameter fastening quick-release latch device. First, insert the cone pin center spring 7 and the center sleeve 3 into the predetermined position of the center shaft 4 in sequence, and then insert the shifted variable diameter cone pin 6 from the left side of the center shaft 4 to support the cone pin center spring 7; then assemble the combination of the variable diameter screw-in nut 1 and the spring baffle 2, insert the spring into the spring position gap of the variable diameter screw-in nut 1 and the spring baffle 2, and then screw the combination into the left side of the center shaft 4, and the internal thread of the variable diameter screw-in nut 1 is meshed with the external thread of the center shaft 4; the right side of the spring baffle 2 is close to one end of the assembly surface of the assembly part, and cooperates to realize the fastening function of the device; 3. Test-fit the assembled quick-release latch device on the part to be assembled, adjust the reducer screw-in nut 1, and adjust the axial diameter of the center sleeve 3 through the stroke change of the reducer screw-in nut 1 to make it match the hole of the part to be assembled, and then insert a fixed cone pin into the center sleeve 3 to stabilize the center sleeve 3; 4. After the shaft diameter adjustment is completed, the other end of the central shaft 4 of the quick-release latch device is sleeved on the expansion fastening clamp 5 to achieve the assembly and fastening effect on the assembly parts.

[0027] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

Claims

1. A quick-release fastening pin device with variable shaft diameter, comprising a variable diameter screw-in nut, a spring-loaded baffle, a center sleeve, a center shaft, an expansion fastening clamp, a shiftable variable diameter tapered pin and a tapered pin center spring, characterized in that: The reducing screw-in nut is connected with a spring baffle, one end of the center shaft passes through the spring baffle and is connected with the reducing screw-in nut, and the other end of the center shaft passes through the expansion fastening clamp and then extends out of the expansion fastening clamp; a cone pin center spring is mounted on the center shaft, and a shift reducing cone pin for supporting one end of the cone pin center spring is arranged on the spring baffle, the other end of the cone pin center spring contacts the top of the boss arranged on the center shaft, and the bottom of the boss contacts the expansion fastening clamp; one end of the center sleeve is nested on the shift reducing cone pin, and the other end of the center sleeve is nested on the boss; the expansion fastening clamp is made of elastic material, and a plurality of groups of expansion fastening shaft rings for clamping the center shaft are arranged in the expansion fastening clamp, and the shaft diameter of the shift reducing cone pin and the shaft diameter of the boss are symmetrically arranged with respect to the cone pin center spring.

2. A quick-release fastening pin device with a variable shaft diameter according to claim 1, characterized in that: A buckle ring seat is arranged on the variable diameter screw-in nut, and a buckle ring used for pulling the variable diameter screw-in nut is arranged on the buckle ring seat.

3. A quick-release fastening pin device with a variable shaft diameter according to claim 1, characterized in that: The reducer screw-in nut is provided with an internal thread, and the central shaft is provided with an external thread that meshes with the internal thread for connection.

4. A quick-release fastening pin device with a variable shaft diameter according to claim 1, characterized in that: The variable diameter screw-in nut is connected with the spring baffle through a spring, and the variable diameter screw-in nut and the spring baffle are respectively provided with spring position notches for installing the spring.

5. A quick-release fastening pin device with a variable shaft diameter according to claim 1, characterized in that: One end of the central shaft is cylindrical, and the other end of the central shaft is provided with a boss, and the shaft diameter of the boss gradually increases from contact with the supporting cone pin center spring until it ends contact with the expansion fastening clamp.

6. A quick-release fastening pin device with a variable shaft diameter according to claim 1, characterized in that: The shaft diameter of the shifting variable-diameter cone pin gradually decreases from the end of the spring-belt baffle until it contacts the cone pin center spring.

7. A quick-release fastening latch device with a variable shaft diameter according to claim 1, characterized in that: The shaft diameter of the expansion fastening clamp gradually decreases from the inside to the outside.

8. A quick-release fastening pin device with a variable shaft diameter according to claim 1, characterized in that: Four groups of expansion and fastening shaft rings are arranged in the expansion and fastening clamp.

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