A plate spring nut

Abstract

A plate spring nut is solidified into one body by an upper plate part, an elastic part, a lower plate part and a driving matching part, the upper plate part is a wedge upper plate, the upper plate part is connected with the lower plate part by the elastic part, the wedge surface of the wedge upper plate of the upper plate part is opposite to the wedge surface of the wedge lower plate of the lower plate part, one end of the elastic part is connected with the upper plate part and the other end is connected with the lower plate part, the place where the elastic part is connected with the lower plate part is parallel to the lower plate part, the bottom surface cannot have protrusion, the upper plate part and the lower plate part are opposite to each other and prevent the upper plate part and the lower plate part from closing, the lower plate part is a wedge lower plate, one end of the lower plate part is connected with the elastic part and the other end is connected with the driving matching part, the wedge surface of the wedge upper plate of the upper plate part is opposite to the wedge surface of the wedge lower plate of the lower plate part, the driving matching part is connected with the lower plate part and is erected on one side of the plate spring nut, the elastic part on the other side of the plate spring nut is opposite to the driving matching part, the elastic part and the matching part are rotated around the bolt by a wrench to assemble or disassemble the plate spring nut.

Description

Technical Field

[0001] This invention relates to the field of mechanical fasteners, and more particularly to a leaf spring nut. Background Technology

[0002] In the field of mechanical fasteners, there are detailed national standards for leaf spring nuts. For example, the thickness of the plate of an M10 leaf spring nut is 1.5 to 5.5 mm, while the total thickness of two plates is at least 3 mm and at most greater than 11 mm. When using a wrench to drive the bottom plate of the leaf spring nut, only driving the 1.5 to 5.5 mm plate will obviously cause the wrench to slip. When using a wrench to drive a nut with a welded upper plate, the lower plate will rotate. As the torque increases, the lower plate will stop rotating before the specified torque is reached. The elastic part of the leaf spring will be twisted and deformed. The elasticity of the leaf spring is opposite to the driving force, resulting in insufficient torque. Only by driving the upper and lower plates simultaneously can the required torque be achieved. However, there is no device for leaf spring nuts to work with a wrench. Here, we introduce a type of leaf spring nut that can be driven from either the side or the top. Summary of the Invention

[0003] To address the problems existing in the prior art, the present invention adopts the following technical solution: a leaf spring nut, comprising an upper plate portion, an elastic portion, a lower plate portion, and a driving engagement portion, all integrally formed.

[0004] The upper plate portion is a rectangular plate or a wedge plate. The upper plate portion is connected to the lower plate portion by an elastic portion. At least a portion of the upper plate portion and the lower plate portion is a wedge plate, with the plane facing the wedge surface, or the wedge surface facing the wedge surface.

[0005] The upper plate has threads, and the threads on the upper plate are coaxial with the threads on the lower plate, and the standards and thread parameters are the same. Alternatively, the upper plate may have threaded holes, or it may not have threads but only threaded holes, which simply form a clip or washer that is fastened by bolts or screws.

[0006] The elastic part is connected to the upper plate at one end and to the lower plate at the other end. The part of the elastic part that connects to the lower plate is not parallel to the lower plate and has a protrusion. The upper plate and the lower plate are opposite to each other, preventing the upper plate and the lower plate from closing.

[0007] The elastic part is on one side of the leaf spring nut, opposite the driving engagement part that stands upright on the other side of the leaf spring nut. The wrench drives the elastic part and the engagement part to rotate around the bolt to load and unload the leaf spring nut.

[0008] The lower plate is a rectangular plate or a wedge plate, with one end connected to the elastic part and the other end connected to the driving engagement part. At least a portion of the upper plate and the lower plate are wedge plates, with the plane facing the wedge surface or the wedge surface facing the wedge surface.

[0009] The spring is cut and stamped on the lower plate to form a spring piece that is fixed on one side and raised on the other side, which interacts with the upper plate. The spring piece has a hole or thread. The thread of the spring piece on the lower plate is coaxial with the thread of the upper plate, and the standard and thread parameters are the same. As the leaf spring nut rotates, the axis of the spring piece shifts to one side and is not coaxial with the thread of the upper plate, forming an eccentricity to prevent the leaf spring nut from loosening.

[0010] Alternatively, the lower plate can be cut and stamped to form two spring pieces that are fixed on both sides and raised in the middle. The two spring pieces raised in the middle interact with the upper plate. The two spring pieces have a common hole or a common thread. The thread of the two spring pieces on the lower plate is coaxial with the thread of the upper plate, and the standard and thread parameters are the same. As the leaf spring nut rotates, the two spring pieces on both sides converge towards the axis to clamp the bolt, eliminating the gap and preventing the leaf spring nut from loosening.

[0011] The drive engagement part is connected to the lower plate and belongs to the lower plate part. It stands upright on one side of the leaf spring nut and is opposite to the elastic part on the other side of the leaf spring nut. The wrench drives the elastic part and the engagement part to rotate around the bolt to load and unload the leaf spring nut.

[0012] Alternatively, a leaf spring nut may be provided, comprising an upper plate and / or a lower plate, without an elastic portion, and having a split structure. The upper plate has a threaded hole in the middle, and the lower plate is a flat plate or wedge plate in an L-shape or S-shape with threads. One side of the threaded hole (the thinner side of the wedge plate) is shorter than the other side (the thicker side of the wedge plate). On the longer side of the threaded hole (the thicker side of the wedge plate), there is a downward protrusion. The downward protrusion can be further divided into cold-forged or hot-forged protrusions and bent or folded protrusions. The length of the protrusion is determined by the elasticity of the lower plate, the threads, and the length of the longer side, and is at least one-ninth of the threads.

[0013] Or a leaf spring nut, comprising: an upper plate portion and a lower plate portion, without an elastic portion. The upper plate portion has a threaded hole in the middle. The lower plate is a flat plate or a wedge plate in an L-shape or S-shape with a hole. One side of the hole (the thinner side of the wedge plate) is shorter and the other side (the thicker side of the wedge plate) is longer. On the longer side of the hole (the thicker side of the wedge plate), there is a downward protrusion. The downward protrusion is further divided into cold-forged and hot-forged protrusions and bent or folded protrusions. The length of the protrusion is determined by the elasticity of the lower plate, the thread, and the length of the longer side, and is at least one-ninth of the thread. Attached Figure Description

[0014] Figure 1 , one Side view of the spring-nut with the leaf spring raised.

[0015] Figure 2 , one Top view of the spring-nut with the leaf spring raised.

[0016] Figure 3 , oneTry to lift the bottom of the leaf spring nut.

[0017] Figure 4 Side view of the two raised leaf spring nuts.

[0018] Figure 5 Top view of two raised leaf spring nuts.

[0019] Figure 6 Two spring leaf springs and nuts are raised at the bottom.

[0020] The diagram shows the following symbols: 1. Upper plate part; 2. Major diameter of the thread on the upper plate part; 3. Minor diameter; 4. Elastic part; 5. Wedge surface; 6. One spring clip; 7. Lower plate part; 8. Thread or screw hole on the lower plate part; 9. Spring clip on one side; 10. Spring clip on the other side. Detailed Implementation

[0021] Example 1

[0022] like Figure 1 , 2 As shown in Figure 3, the workpiece is mounted on the bolt, and then the bolt is passed through the thread 8 of the spring piece 6 on the lower plate 7, or through the threaded hole 8 of the spring piece 6 on the lower plate 7. The driving device drives the elastic part 4 and the driving mating device connected to the lower plate part to rotate around the bolt. As the driving device rotates, the bolt enters the thread of the upper plate with a large diameter 2 and a small diameter 3. The driving device continues to drive the driving mating device connected to the elastic part 4 and the lower plate part to rotate around the bolt. The lower plate part 7 contacts the workpiece, and the rotating spring piece 6 begins to descend until it is level with the lower plate 7. The axis of the spring piece shifts to one side, becoming non-coaxial with the thread of the upper plate part, forming an eccentricity to prevent the leaf spring nut from loosening. Under the action of the thread of the large diameter 2 and the small diameter 3 and the action of the elastic part, the upper plate part tilts and descends. The elastic part 4 is compressed until the wedge surface 5 of the upper plate part 1 and the plane or wedge surface of the lower plate part 7 are pressed together to reach the required torque.

[0023] Example 2

[0024] like Figure 4 , 5As shown in Figure 6, the workpiece is mounted on the bolt, and then the bolt is passed through the threads 8 of the spring plates 9 and 10 on both sides of the lower plate 7, or through the threaded holes 8 of the spring plates 9 and 10 on both sides of the lower plate 7. The driving device drives the elastic part 4 and the driving engagement device connected to the lower plate part to rotate around the bolt. As the driving device rotates, the bolt enters the threads of the upper plate with a large diameter 2 and a small diameter 3. The driving device continues to drive the driving engagement device connected to the elastic part 4 and the lower plate part to rotate around the bolt. The lower plate part 7 contacts and rotates with the workpiece. The spring plates 9 and 10 on both sides begin to descend until they are level with the lower plate 7. The spring plates on both sides converge towards the axis to clamp the bolt, eliminating gaps and preventing the leaf spring nut from loosening. Under the action of the threads of the large diameter 2 and small diameter 3 and the action of the elastic part, the upper plate part tilts and descends. The elastic part 4 is compressed until the wedge surface 5 of the upper plate part 1 and the plane or wedge surface of the lower plate part 7 are pressed together to reach the required torque.

Claims

1. A leaf spring nut, characterized in that, The upper plate, elastic part, lower plate part, and drive engagement part are solidified into one piece. The upper plate is a wedge-shaped upper plate, and the upper plate is connected to the lower plate by an elastic part. The elastic portion is connected to the upper plate at one end and to the lower plate at the other end. Where the elastic portion connects to the lower plate, the lower plate is not parallel and protrudes downwards. The wedge surfaces of the upper and lower plates face each other, preventing the upper and lower plates from closing. The lower plate is a wedge-shaped lower plate, with one end connected to the elastic part and the other end connected to the driving engagement part. The drive engagement part is connected to the lower plate and belongs to the lower plate section. It stands upright on one side of the leaf spring nut, opposite the elastic part on the other side of the leaf spring nut. The wrench drives the elastic part and the mating part to rotate around the bolt to load and unload the leaf spring nut.

2. A leaf spring nut, characterized in that, The upper plate, elastic part, lower plate part, and drive engagement part are solidified into one piece. The upper plate is a wedge-shaped upper plate, and the upper plate is connected to the lower plate by an elastic part. The elastic portion is connected to the upper plate portion at one end and to the lower plate portion at the other end. The wedge surface of the upper plate portion and the plane of the lower plate portion are opposite to each other, preventing the upper plate portion and the lower plate portion from closing. The lower plate is rectangular, with one end connected to the elastic part and the other end connected to the driving engagement part. The drive engagement part is connected to the lower plate and belongs to the lower plate section. It stands upright on one side of the leaf spring nut, opposite the elastic part on the other side of the leaf spring nut. The wrench drives the elastic part and the mating part to rotate around the bolt to load and unload the leaf spring nut.

3. A leaf spring nut, characterized in that, The upper plate, elastic part, lower plate part, and drive engagement part are solidified into one piece. The upper plate is rectangular and is connected to the lower plate by an elastic section. The elastic portion is connected to the upper plate at one end and to the lower plate at the other end. Where the elastic portion connects to the lower plate, the lower plate is not parallel and protrudes downwards. The plane of the upper plate and the wedge-shaped surface of the lower plate are opposite to each other, preventing the upper and lower plates from closing. The lower plate is a wedge-shaped lower plate, with one end connected to the elastic part and the other end connected to the driving engagement part. The drive engagement part is connected to the lower plate and belongs to the lower plate section. It stands upright on one side of the leaf spring nut, opposite the elastic part on the other side of the leaf spring nut. The wrench drives the elastic part and the mating part to rotate around the bolt to load and unload the leaf spring nut.

4. A leaf spring nut as described in claim 1, 2, or 3, characterized in that, The lower plate includes a spring piece that is cut and stamped into a shape that is fixed on one side of the lower plate and raised on the other side. The spring piece interacts with the upper plate. The spring piece has threads or holes. The threads of the spring piece on the lower plate are coaxial with the threads of the upper plate, and the standard and thread parameters are the same. As the leaf spring nut rotates, the axis of the spring piece shifts to one side and is not coaxial with the threads of the upper plate, forming an eccentricity to prevent the leaf spring nut from loosening.

5. A leaf spring nut as described in claim 1, 2, or 3, characterized in that, The lower plate includes two spring pieces that are cut and stamped into two sides and fixed on the lower plate, with the middle raised. The two spring pieces interact with the upper plate. The two spring pieces have a common thread or hole. The thread of the two spring pieces on the lower plate is coaxial with the thread of the upper plate, and the standard and thread parameters are the same. As the leaf spring nut rotates, the two spring pieces on both sides converge towards the axis to clamp the bolt, eliminating the gap and preventing the leaf spring nut from loosening.

6. A leaf spring nut as described in claim 1, 2, or 3, characterized in that, The upper plate has threaded holes, and the threads of the threaded holes on the upper plate and the lower plate are coaxial, have the same standard, and have the same thread parameters.

7. A leaf spring nut as described in claim 1, 2, or 3, characterized in that, The upper plate has threaded holes, while the lower plate only has holes and no threads.

8. A leaf spring nut as described in claim 1 or 3, characterized in that, The elastic part is connected to the upper plate at one end and to the lower plate at the other end. The part where the elastic part connects to the lower plate is not parallel to the lower plate and forms a downward protrusion. The plane of the upper plate and the wedge surface of the lower plate are opposite to each other, preventing the upper plate and the lower plate from closing.

9. A leaf spring nut as described in claim 1 or 3, characterized in that, The lower plate is a wedge plate in the shape of L or S, with threaded holes. One side of the threaded hole is shorter than the other side, and the longer side protrudes downward. The length of the protrusion is determined according to the elastic properties of the lower plate, the specifications of the threaded holes, and the overall length of the lower plate.

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