A ring fastener

Abstract

The present invention discloses a novel annular fastener. After a pre-tightening force is applied to a commonly used threaded fastener, due to various reasons, the nut and the bolt (or stud, screw) will produce a relative angular displacement with the axis of the spiral line on the bolt as the axis, and the spiral pair will produce an axial displacement at the same time as the relative angular displacement. Therefore, an annular fastener system can be used to solve the problem of the corresponding axial displacement caused by the relative angular displacement of the spiral pair in certain threaded fastener systems. The present invention proposes a technology that combines annular components so that when the annular buckle produces a relative angular displacement around the central axis, the axial displacement of the annular buckle is limited; that is, the axial displacement range of the fastened object is limited by the cooperation of the inner and outer ring patterns of each annular component, and a force is applied to the fastened object by combining the annular components with the supporting components.

Description

Technical Field

[0001] The invention relates to the field of fasteners, in particular to a ring fastener. Background Art

[0002] Among the commonly used fasteners, after the pre-tightening force is applied to the threaded fastener, the nut and the bolt (or stud, screw) will produce relative angular displacement with the axis of the spiral line on the bolt as the axis due to various reasons such as displacement between the fastener and the fastened object, creep, vibration, and external force impact. The relative angular displacement of the spiral pair will also produce axial displacement, resulting in loosening of the threaded fastener and reduction of the pre-tightening force on the fastened object. Therefore, the present invention proposes a technology to solve the problem of the corresponding axial displacement caused by the relative angular displacement of the spiral pair in certain threaded fastener systems by using an annular fastener system. Summary of the invention

[0003] The main technical problem solved by the present invention is to propose a technology that combines ring-shaped components, limits the axial displacement range of the fastened object by cooperating with the inner ring pattern and the outer ring pattern of each ring-shaped component, and applies force to the fastened object by combining the ring-shaped components with the supporting components.

[0004] In order to solve the problem of axial displacement corresponding to relative angular displacement of the spiral pair in the threaded fastener system, the technical solution of the present invention is to use annular patterns to replace the threads of nuts, bolts (or studs, screws) on certain fasteners. The annular patterns refer to the threads with specific cross-sections made on the surface of a cylindrical (or conical) matrix along the circular trajectory cut by a plane passing through a point on the central axis of the cylindrical (or conical) matrix and perpendicular to the central axis and intersecting with the matrix surface.

[0005] The ring pattern formed on the outer surface of the cylindrical (or conical) mother body is an outer ring pattern. A cylinder with several outer ring patterns at one or both ends is called an annular column or annular rod in the present invention. A mechanical part consisting of a cylinder with several outer ring patterns at one end and a head with a diameter larger than the cylinder at the other end is called an annular bolt in the present invention.

[0006] The ring pattern formed on the inner surface of the cylindrical (or conical) matrix is ​​the inner ring pattern. When two or more parts are combined to form a complete inner ring pattern and each part contains a part of the inner ring pattern, the present invention calls the combination of these parts a ring pattern buckle, and each part is called a ring pattern fastener. The part that keeps the ring pattern fastener as a force-bearing whole is called a restraining part.

[0007] When the annular fastener can be combined around the annular column (rod) or the annular bolt to form an annular buckle, and the maximum diameter of the outer annular pattern is larger than the minimum diameter of the inner annular pattern, then the displacement range of the inner annular pattern at the minimum diameter must be limited by the outer annular pattern in at least one direction along the axial direction (such as the attached Figure 2In the embodiment, the maximum diameter of the outer ring of the ring bolt is larger than the minimum diameter of the inner ring of the ring buckle, so the displacement range of the ring buckle in the direction A is limited). This is called the limitation of the ring buckle on the ring column (rod) or the ring bolt. When a suitable ring buckle or the head of the ring bolt is also provided at the end of the ring column in the opposite direction of the direction A, the object being fastened can be limited to move within a certain range on the axis.

[0008] Support component: In the present invention, a combination of parts that are in close contact with the annular buckle and the fastened object, can produce a certain amount of axial dimensional change to compensate for the distance between the annular buckle and the fastened object, and transmit the pre-tightening force of the annular buckle on the fastened object is called a support component. Since every two adjacent outer annular patterns are arranged at a certain distance along the axial direction and are not arranged continuously, the annular buckle cannot be limited at every position on the axis. Generally, when the fastened objects are close to the other end away from the annular buckle, the annular buckle is a certain distance away from the nearest fastened object; in order to prevent the fastened object from moving within this distance range, a support component can be used. The dimensions of the structural combination in the support component can change along the axial direction, and deform under the action of the pre-tightening force, so that the pre-tightening force applied by the annular buckle acts on the fastened object.

[0009] Ring fasteners can be used to connect some objects tightly. By designing appropriate rules and formulating certain specification standards, ring buckles and ring columns (rods) or ring bolts can be used in pairs with the same specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a three-dimensional exploded schematic diagram of a ring-shaped fastener of the present invention (taking a ring-shaped bolt as an example);

[0011] Figure 2 It is a schematic diagram of the installation method of a ring fastener (taking a ring bolt as an example);

[0012] The markings of the components in the accompanying drawings are as follows: 1. annular bolt; 2. annular fastener; 3. restraining member; 4. supporting member; 5. fastened object 1; 6. fastened object 2. DETAILED DESCRIPTION

[0013] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0014] See also Figure 1 and Figure 2 The present invention includes an annular fastener, which is composed of 1. an annular bolt; 2. an annular fastener; 3. a restraining member; and 4. a supporting member.

[0015] There are two ways to achieve pre-tightening force on the fastened object (taking the ring bolt as an example):

[0016] 1. Use external tensioning equipment to apply preload. Figure 2 , after 5 and 6 are placed close to one end of the head of 1, (1) the support component is placed close to the fastener; (2) the tensioning device is used to apply a suitable preload to stretch the annular bolt; (3) the annular buckle is installed on the annular bolt and is limited to the ring closest to the support component; (4) the structural combination in the support component is adjusted to change its size along the axial direction, compensating the distance between 2 and 5 until 2 and 5 can be closely contacted at the same time; (5) the tensioning device is removed to allow the support component to bear the preload. At this time, the support component is deformed, and the preload generated by the contraction of the annular bolt and the annular buckle is transmitted to the fastened object.

[0017] Second, the structural member of the supporting component is exerted with force to generate the supporting force of the supporting component on the fastened object and the ring buckle, so that the fastened object is pre-tightened. Figure 2 , after 5 and 6 are placed close to one end of the head of 1, (1) the support component is placed close to the fastener; (2) the ring buckle is installed on the ring bolt and is limited to the ring closest to the support component; (3) a force is applied to the structural member in the support component to change its size along the axial direction, compensating the distance between 2 and 5 until 2 and 5 can be closely contacted at the same time; (4) the force is continued to be applied until the support force of the support component on 2 and 5 finally reaches the expected preload force. At this time, the support component is deformed, and the preload force applied by the ring buckle acts on the fastener.

[0018] The number of fastened objects shown in the example is not fixed to 2. Ring fasteners of appropriate specifications can be selected for installation according to the number of fastened objects in actual application. If a ring column (rod) is used instead of a ring bolt in actual application, when the other end of the ring column can limit the displacement range of the fastened object, the above two methods can also be used to pre-tighten the fastened object.

[0019] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structures or equivalent transformations made using the contents of the present invention's specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A ring fastener, comprising a ring column or a ring bolt, a ring buckle, a restraining member, and a supporting member, characterized in that: The annular pattern refers to a tooth with a specific cross-section made on the surface of a cylindrical matrix along a circular trajectory cut out by a plane passing through a point on the central axis of the matrix and perpendicular to the central axis and intersecting the matrix surface; the outer annular pattern is an annular pattern formed on the outer surface of the cylindrical matrix; the inner annular pattern is an annular pattern formed on the inner surface of the cylindrical matrix; a cylinder with several outer annular patterns at one or both ends is an annular column; a mechanical part consisting of a cylinder with several outer annular patterns at one end and a head at the other end having a diameter larger than that of the cylinder is an annular bolt; an annular buckle is composed of two or more parts combined to form a complete inner annular pattern and each part contains a part of the inner annular pattern; each part is called an annular fastener; the annular fastener can be combined around an annular column or annular bolt to form an annular buckle, and the maximum diameter of the outer annular pattern is larger than the minimum diameter of the inner annular pattern, and the displacement range of the inner annular pattern at the minimum diameter is limited by the outer annular pattern in at least one direction along the axial direction; The part that keeps the ring fastener as a whole that can bear force is called a restraining part; The restraining member is in the shape of a circular ring; After the first and second objects to be fastened are placed close to one end of the head of the annular bolt, the support component is placed close to the fastened component; the annular buckle is installed on the annular bolt and is limited to a ring closest to the support component; a force is applied to the structural component in the support component to change its size in the axial direction, and the distance between the annular buckle and the first object to be fastened is compensated until the annular buckle and the first object to be fastened can be closely contacted at the same time; the force is continued to be applied until the supporting force of the support component on the annular buckle and the first object to be fastened finally reaches the expected pre-tightening force; At this time, the supporting component is deformed, and the pre-tightening force applied by the ring buckle acts on the fastened object.

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