Threaded connection assembly

Abstract

The utility model provides a threaded connection assembly. The threaded connection assembly comprises a bolt and a connecting piece, wherein the bolt comprises a screw rod and a head part fixedly arranged at one axial end of the screw rod; the nut is configured to be in threaded connection with the other axial end of the screw rod and is used for clamping a workpiece between the head part and the nut; the spring washer is arranged on the screw rod in a sleeving manner, and the spring washer is arranged between the head part and / or the nut and a workpiece; the annular hoop is arranged on the outer ring of the spring washer in a sleeving mode and used for preventing the spring washer from moving outwards in the radial direction.

Description

Technical Field

[0001] The utility model relates to a threaded connection assembly. Background Art

[0002] Currently, threaded connection components include bolts and nuts. By threading the nut onto the bolt's shank, a workpiece can be clamped between the bolt head and the nut. However, the workpiece is in rigid contact with the bolt head and nut, resulting in poor clamping.

[0003] The clamping performance can be improved by arranging elastic washers between the workpiece, the bolt head and the nut bracket. However, the elastic washers are easily damaged by external forces, causing their clamping effect to be weakened or even disappear.

[0004] Therefore need to propose a kind of novel threaded connection assembly. Utility Model Content

[0005] One of the purposes of the present invention is to overcome at least one deficiency in the prior art and provide a threaded connection assembly.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] According to a first aspect of the present invention, a threaded connection assembly is provided. The threaded connection assembly comprises:

[0008] A bolt comprising a screw rod and a head fixed to one axial end of the screw rod;

[0009] a nut configured to be threadedly connected to the other axial end of the screw and to clamp a workpiece between the head and the nut;

[0010] a spring washer, the spring washer being sleeved on the screw and being provided between the head and / or the nut and the workpiece; and

[0011] An annular hoop is sleeved on the outer ring of the spring washer and is used to prevent the spring washer from moving radially outward.

[0012] Optionally, the spring washer is provided with an opening and is configured as follows:

[0013] In a free state, the spring washer is released, and the first end and the second end thereof are spaced apart by a set distance in the axial direction;

[0014] When the nut clamps the workpiece between the head and the nut, the spring washer is deformed to a locked state so that its first end and second end are axially flush and applies an axial clamping force to the workpiece.

[0015] Optionally, the axial length of the annular hoop is less than or equal to the axial length of the spring washer in a locked state.

[0016] Optionally, an annular gasket is provided between the head and / or the nut and the spring washer;

[0017] When the nut clamps the workpiece between the head and the nut, one end of the spring washer presses against the annular gasket to apply an axial clamping force to the workpiece.

[0018] Optionally, the annular gasket is provided with a serrated protrusion on a side facing the workpiece;

[0019] When the nut clamps the workpiece between the head and the nut, the serrated protrusions of the annular gasket abut against the workpiece.

[0020] Optionally, the first end of the spring washer is protrudingly provided with a first sharp corner;

[0021] The first pointed corner of the spring washer presses against the annular gasket;

[0022] The second end of the spring washer is protruded and provided with a second sharp corner;

[0023] The second pointed corner of the spring washer abuts against the head and / or the nut.

[0024] Optionally, the inner diameter of the annular gasket is smaller than or equal to the inner diameter of the workpiece;

[0025] The outer diameter of the annular gasket is greater than or equal to the outer diameter of the workpiece;

[0026] The inner diameter of the spring washer is greater than or equal to the inner diameter of the annular gasket;

[0027] The inner diameter of the annular hoop is smaller than the outer diameter of the annular gasket.

[0028] Optionally, the annular hoop and the spring washer have a radial clearance fit or a transition fit.

[0029] Optionally, the head and / or the nut is provided with a first flat surface at one end facing the annular gasket;

[0030] When the nut clamps a workpiece between the head and the nut, the first plane is in contact with the axial end surfaces of the spring washer and the annular collar.

[0031] Optionally, the spring washer includes a first spring washer and a second spring washer;

[0032] The first spring washer is located between the head and the workpiece;

[0033] The second spring washer is located between the nut and the workpiece;

[0034] The annular hoop includes a first annular hoop and a second annular hoop;

[0035] The first annular hoop is sleeved on the outer ring of the first spring washer;

[0036] The second annular hoop is sleeved on the outer ring of the first spring washer.

[0037] Optionally, the first annular hoop and the head of the bolt are independently provided or fixedly connected to form an integral piece;

[0038] The second annular hoop and the nut are independently provided or fixedly connected to form an integral piece.

[0039] Unlike the prior art, in the threaded connection assembly provided by the present invention, when the nut clamps the workpiece between the head and the nut, the spring washer can be deformed to a locked state, so that the spring washer applies an axial clamping force to the workpiece; the annular hoop is sleeved on the outer ring of the spring washer, which can effectively prevent the spring washer from moving radially outward, and can effectively prevent the spring washer from being damaged by external force, causing its clamping effect to weaken or disappear.

[0040] An annular gasket may be provided between the head and / or nut and the spring washer, which can perform sealing and buffering, maintain balance and reduce shock, and achieve stable and reliable clamping of the workpiece.

[0041] The inner diameter of the spring washer is greater than or equal to the inner diameter of the annular gasket, and the inner diameter of the annular hoop is smaller than the outer diameter of the annular gasket. The spring washer and the annular hoop are always limited between the annular gasket and the head and / or the nut and the workpiece. The annular hoop can always be arranged around the outer ring of the spring washer, continuously preventing the spring washer from moving radially outward, and effectively preventing the spring washer from being damaged by external force, causing its clamping effect to weaken or disappear.

[0042] The side of the annular gasket facing the workpiece may be provided with a serrated protrusion. This serrated protrusion provides locking, securing, sealing, sound insulation, and waterproofing, effectively preventing damage to the workpiece caused by direct contact between the elastic gasket and the gasket. The protrusion on the annular gasket increases resistance to the bolt and nut, preventing them from loosening under vibration and load, ensuring equipment safety and extending its service life.

[0043] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1The present invention is a structural diagram of a threaded connection assembly provided in one embodiment of the present invention.

[0045] Figure 2 A cross-sectional view of a threaded connection assembly provided in one embodiment of the present utility model.

[0046] Figure 3 This is an exploded view of a threaded connection assembly provided in one embodiment of the present invention.

[0047] Figure 4 for Figure 3 Schematic diagram of the structure when the middle elastic washer is in the locked state.

[0048] Figure 5 for Figure 4 Schematic diagram of the structure when the elastic washer is in a free state.

[0049] Figure 6 for Figure 3 Schematic diagram of the structure of the annular hoop.

[0050] in:

[0051] 10-bolt;

[0052] 12-head;

[0053] 14-screw;

[0054] 20-nut;

[0055] 30-spring washer;

[0056] 30A-first spring washer;

[0057] 30B-second spring washer;

[0058] 32-opening;

[0059] 34-first end;

[0060] 36- second end;

[0061] 40-annular ferrule;

[0062] 40A-first annular hoop;

[0063] 40B-second annular hoop;

[0064] 50-ring gasket;

[0065] 50A-first annular gasket;

[0066] 50B-second annular gasket;

[0067] 52-serrated protrusions;

[0068] 90-workpiece. DETAILED DESCRIPTION

[0069] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0070] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The singular forms "a", "the" and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates otherwise.

[0071] It should be understood that the term "and / or" as used herein is merely a description of the relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0072] It should be noted that the directional words such as "upper", "lower", "left", and "right" described in the embodiments of the present invention are described based on the angles shown in the accompanying drawings and should not be understood as limiting the embodiments of the present invention. In addition, in the context, it should be understood that when it is mentioned that an element is connected to another element "on" or "under", it can not only be directly connected to the other element "on" or "under", but also be indirectly connected to the other element "on" or "under" through an intermediate element.

[0073] According to one embodiment of the present invention, a threaded connection assembly is provided. Figures 1 to 3 The threaded connection assembly includes a bolt 10, a nut 20, a spring washer 30 and an annular collar 40. The threaded connection assembly has an axial direction Z.

[0074] Bolt 10 includes a shank 14 and a head 12 fixedly mounted at one axial end of shank 14. Shaft 14 may be provided with external threads. The material, size, and strength grade of bolt 10 vary depending on the application. Bolt 10 is used to connect two or more workpieces 90, achieving a tightening effect through its helical shape.

[0075] The inner hole of the nut 20 is provided with an internal thread, and the internal thread of the nut 20 matches the external thread structure of the screw 14, so that the nut 20 can be sleeved on the screw 14 and threadedly connected to the screw 14. The nut 20 can be threadedly connected to the other axial end of the screw 14, thereby clamping two or more workpieces 90 between the head 12 and the nut 20.

[0076] In the screw industry, spring washers 30 are often called spring washers. Spring washers 30 can prevent loosening and increase preload force. They are made of stainless steel and carbon steel, which is iron. The spring washer 30 is provided with an opening 32. The two ends of the spring washer 30 are relatively spaced apart in the radial direction, namely a first end 34 and a second end 36. The opening 32 of the spring washer 30 can make the spring washer 30 easier to squeeze, which is very important for some applications that require a tight fit. The presence of the opening 32 can make the spring washer 30 easier to shape, so as to adapt to parts of various shapes and sizes. The opening 32 of the spring washer 30 can provide different elasticities under different elastic loads. Under a certain pressure, the opening 32 of the spring washer 30 can be twisted to adapt to different surfaces, and in different applications, the spring washer 30 can provide the required different elasticities.

[0077] See also Figure 5 In the free state, the spring washer 30 is not subjected to any external force, the elastic force of the spring washer 30 is released, and the first end 34 and the second end 36 of the spring washer 30 are spaced apart in the axial direction by a set distance. At this time, the first end 34 and the second end 36 of the spring washer 30 are staggered in the axial direction.

[0078] See also Figure 2 and Figure 4 When the nut 20 clamps the workpiece 90 between the head 12 and the nut 20, the spring washer 30 is subjected to the compressive forces of the head 12 of the bolt 10 and the nut 20 at both axial ends. The axial spacing between the first end 34 and the second end 36 of the spring washer 30 gradually decreases, thereby deforming to a locked state until the first end 34 and the second end 36 of the spring washer 30 are axially flush, and the spring washer 30 applies an axial clamping force to the workpiece 90. Specifically, the first end 34 and the second end 36 of the spring washer 30 move relative to each other in the axial direction until the first end 34 and the second end 36 of the spring washer 30 are axially flush. At this point, the first end 34 and the second end 36 of the spring washer 30 are at the same coordinate position in the axial direction.

[0079] See also Figure 2 The annular hoop 40 is sleeved on the outer ring of the spring washer 30. The annular hoop 40 is limited to one side of the radial direction of the outer ring of the spring washer 30, and can form a radial blocking effect on the spring washer 30, thereby preventing the spring washer 30 from moving radially outward.

[0080] As a preference, see Figure 2 and Figure 3 , radial clearance fit or transition fit can be provided between the annular hoop 40 and the spring washer 30. This makes it easy for the annular hoop 40 to be sleeved on the spring washer 30, and the elastic washer can be allowed to deform in the annular hoop 40.

[0081] With such arrangement, when the nut 20 clamps the workpiece 90 between the head 12 and the nut 20, the spring washer 30 can be deformed to a locked state, so that the spring washer 30 applies an axial clamping force to the workpiece 90, and the threaded connection assembly can reliably, continuously and stably clamp the workpiece 90; the annular hoop 40 is sleeved on the outer ring of the spring washer 30, which can effectively prevent the spring washer 30 from moving radially outward, and can effectively prevent the spring washer 30 from being damaged by external force, causing its clamping effect to weaken or disappear.

[0082] In this embodiment, please refer to Figure 2 and Figure 3 , the axial length of the annular hoop 40 is less than or equal to the axial length of the spring washer 30 in the locked state.

[0083] When the nut 20 clamps the workpiece 90 between the head 12 and the nut 20, the first end 34 and the second end 36 of the spring washer 30 are axially flush. At this time, the axial length of the annular hoop 40 is always less than or equal to the axial length of the spring washer 30 in the locked state, so that the spring washer 30 can always abut the workpiece 90 and exert an axial clamping force on the workpiece 90.

[0084] More preferably, see Figure 2 and Figure 3 An annular gasket 50 may be provided between the head 12 and / or the nut 20 and the spring washer 30. The annular gasket 50 is located between the head 12 and / or the nut 20 and the spring washer 30 and can provide sealing, buffering, balancing, and shock absorption, thereby achieving stable and reliable clamping of the workpiece 90.

[0085] The inner diameter of the annular gasket 50 is smaller than or equal to the inner diameter of the workpiece 90. The outer diameter of the annular gasket 50 is larger than or equal to the outer diameter of the workpiece 90. In this way, the annular gasket 50 and the workpiece 90 have a large contact area, thereby stably and reliably clamping the workpiece 90.

[0086] The inner diameter of the spring washer 30 is greater than or equal to the inner diameter of the annular gasket 50. The outer diameter of the spring washer 30 is smaller than the inner diameter of the annular gasket 50. The inner diameter of the annular collar 40 is smaller than the outer diameter of the annular gasket 50. In this manner, the spring washer 30 and annular collar 40, when nested together, are always retained between the annular gasket 50 and the head 12 and / or the nut 20 and the workpiece 90. The annular collar 40 can always surround the outer ring of the spring washer 30, continuously preventing the spring washer 30 from moving radially outward, effectively preventing the spring washer 30 from being damaged by external forces, which could weaken or even eliminate its clamping function.

[0087] When the nut 20 clamps the workpiece 90 between the head 12 and the nut 20 , one end of the spring washer 30 presses against the annular gasket 50 , thereby applying an axial clamping force to the workpiece 90 .

[0088] See also Figure 2 and Figure 6 The side of the annular gasket 50 facing the workpiece 90 may be provided with a serrated protrusion 52. When the nut 20 clamps the workpiece 90 between the head 12 of the bolt 10 and the nut 20, the serrated protrusion 52 of the annular gasket 50 abuts the workpiece 90, preventing the elastic washer from directly abutting the workpiece 90 and causing damage to the workpiece 90.

[0089] The annular gasket 50 with the serrated protrusions 52 has the functions of locking, tightening, preventing loosening, sealing, sound insulation, and waterproofing. The protrusions of the annular gasket 50 can increase the resistance of the bolt 10 and nut 20, preventing the bolt 10 and nut 20 from loosening under vibration and load, ensuring the safety of the equipment and extending the service life of the equipment.

[0090] See also Figures 2 to 4 The first end 34 of the spring washer 30 may be provided with a first sharp corner. The first sharp corner may protrude axially from the surface of the first end 34 of the spring washer 30. The second end 36 of the spring washer 30 may be provided with a second sharp corner. The second sharp corner may protrude axially from the surface of the second end 36 of the spring washer 30.

[0091] When the nut 20 clamps the workpiece 90 between the head 12 and the nut 20 , the first sharp corner of the spring washer 30 abuts the annular washer 50 , and the second sharp corner of the spring washer 30 abuts the head 12 and / or the nut 20 .

[0092] See also Figure 2 and Figure 3 The head 12 and / or the end of the nut 20 facing the annular gasket 50 may be provided with a first flat surface. The axial end surfaces of the spring washer 30 and the annular hoop 40 correspond to the second flat surface. The first flat surface and the second flat surface may be in contact with each other.

[0093] When the nut 20 clamps the workpiece 90 between the head 12 and the nut 20 , the first end 34 and the second end 36 of the spring washer 30 are axially flush, and the first plane aligns with the second planes of the spring washer 30 and the annular collar 40 .

[0094] In a specific embodiment, please refer to Figure 2 The spring washer 30 may include a first spring washer 30A and a second spring washer 30B. The first spring washer 30A is positioned between the head 12 and the workpiece 90. The second spring washer 30B is positioned between the nut 20 and the workpiece 90. The annular collar 40 includes a first annular collar 40A and a second annular collar 40B. The first annular collar 40A is sleeved onto the outer ring of the first spring washer 30A. The second annular collar 40B is sleeved onto the outer ring of the first spring washer 30A. The annular gasket 50 includes a first annular gasket 50A and a second annular gasket 50B. The first annular gasket 50A is positioned between the head 12 and the first spring washer 30A. The second annular gasket 50B is positioned between the nut 20 and the second spring washer 30B.

[0095] The first annular collar 40A in this embodiment can be provided independently of the head 12 of the bolt 10. It should be noted that, in other embodiments, the first annular collar 40A can also be fixedly connected to the head 12 of the bolt 10 as an integral piece.

[0096] The second annular collar 40B and the nut 20 in this embodiment can be provided independently. It should be noted that, in some other embodiments, the second annular collar 40B can also be fixedly connected to the nut 20 as an integral part.

[0097] It is understandable that the specific structure of the workpiece 90 to be clamped by the threaded connection assembly can be set as needed. For example, as shown in the figure, two sleeve-shaped workpieces 90 can be sleeved on the screw 14, and the two sleeve-shaped workpieces 90 can be axially connected and fixed together by the threaded connection assembly.

[0098] According to the same inventive concept, the present invention also provides an embodiment, which provides a threaded connection method. Figures 1 to 6 , the thread connection method comprises the following steps:

[0099] First, the first spring washer 30A is sleeved onto the screw rod 14 of the bolt 10 , and the first annular hoop 40A is sleeved onto the outer ring of the first spring washer 30A.

[0100] Then, the first annular gasket 50A is sleeved on the screw 14 of the bolt 10, wherein the inner diameter of the first spring washer 30A is greater than or equal to the inner diameter of the first annular gasket 50A, and the inner diameter of the first annular hoop 40A is smaller than the outer diameter of the first annular gasket 50A.

[0101] Afterwards, the workpiece 90 is sleeved on the screw 14 of the bolt 10 , wherein the inner diameter of the first annular pad 50A is smaller than or equal to the inner diameter of the workpiece 90 , and the outer diameter of the first annular pad 50A is larger than or equal to the outer diameter of the workpiece 90 .

[0102] Afterwards, the second annular gasket 50B is sleeved on the screw 14 of the bolt 10 , wherein the inner diameter of the second annular gasket 50B is smaller than or equal to the inner diameter of the workpiece 90 , and the outer diameter of the second annular gasket 50B is larger than or equal to the outer diameter of the workpiece 90 .

[0103] Afterwards, the second spring washer 30B is sleeved on the screw 14 of the bolt 10, and the second annular hoop 40B is sleeved on the outer ring of the second spring washer 30B, wherein the inner diameter of the second spring washer 30B is greater than or equal to the inner diameter of the second annular gasket 50B, and the inner diameter of the second annular hoop 40B is smaller than the outer diameter of the second annular gasket 50B.

[0104] Afterwards, the nut 20 is threadedly connected to the other axial end of the screw rod 14 to deform the first spring washer 30A and the second spring washer 30B so that the first spring washer 30A and the second spring washer 30B respectively press against the first annular gasket 50A and the second annular gasket 50B from both ends.

[0105] In the utility model, when the nut clamps the workpiece between the head and the nut, the spring washer can be deformed to a locked state, so that the spring washer exerts an axial clamping force on the workpiece; the annular hoop is sleeved on the outer ring of the spring washer, which can effectively prevent the spring washer from moving radially outward, and can effectively prevent the spring washer from being damaged by external force, causing its clamping effect to be weakened or disappear.

[0106] An annular gasket may be provided between the head and / or nut and the spring washer, which can perform sealing and buffering, maintain balance and reduce shock, and achieve stable and reliable clamping of the workpiece.

[0107] The inner diameter of the spring washer is greater than or equal to the inner diameter of the annular gasket, and the inner diameter of the annular hoop is smaller than the outer diameter of the annular gasket. The spring washer and the annular hoop are always limited between the annular gasket and the head and / or the nut and the workpiece. The annular hoop can always be arranged around the outer ring of the spring washer, continuously preventing the spring washer from moving radially outward, and effectively preventing the spring washer from being damaged by external force, causing its clamping effect to weaken or disappear.

[0108] The side of the annular gasket facing the workpiece may be provided with a serrated protrusion. This serrated protrusion provides locking, securing, sealing, sound insulation, and waterproofing, effectively preventing damage to the workpiece caused by direct contact between the elastic gasket and the gasket. The protrusion on the annular gasket increases resistance to the bolt and nut, preventing them from loosening under vibration and load, ensuring equipment safety and extending its service life.

[0109] The above are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent replacements or improvements within the spirit of the present invention are included in the scope of the claims of the present invention.

Claims

1. A threaded connection assembly, characterized in that: include: A bolt comprising a screw rod and a head fixed to one axial end of the screw rod; a nut configured to be threadedly connected to the other axial end of the screw and used to clamp a workpiece between the head and the nut; a spring washer, the spring washer being sleeved on the screw and being arranged between the head and / or the nut and the workpiece; and An annular hoop is sleeved on the outer ring of the spring washer and is used to prevent the spring washer from moving radially outward.

2. The threaded connection assembly according to claim 1, wherein: The spring washer is provided with an opening and is configured as follows: In a free state, the spring washer is released, and the first end and the second end thereof are spaced apart by a set distance in the axial direction; When the nut clamps the workpiece between the head and the nut, the spring washer is deformed to a locked state so that its first end and second end are axially flush and applies an axial clamping force to the workpiece.

3. The threaded connection assembly according to claim 2, wherein: The axial length of the annular hoop is less than or equal to the axial length of the spring washer in a locked state.

4. The threaded connection assembly according to claim 2, wherein: An annular gasket is provided between the head and / or the nut and the spring washer; When the nut clamps the workpiece between the head and the nut, one end of the spring washer presses against the annular gasket to apply an axial clamping force to the workpiece.

5. The threaded connection assembly according to claim 4, wherein: The annular gasket is provided with a serrated protrusion on the side facing the workpiece; When the nut clamps the workpiece between the head and the nut, the serrated protrusions of the annular gasket abut against the workpiece.

6. The threaded connection assembly according to claim 4, wherein: The first end of the spring washer is protruded with a first sharp corner; The first pointed corner of the spring washer presses against the annular gasket; The second end of the spring washer is protruded and provided with a second sharp corner; The second pointed corner of the spring washer abuts against the head and / or the nut.

7. The threaded connection assembly according to claim 4, wherein: The inner diameter of the annular gasket is smaller than or equal to the inner diameter of the workpiece; The outer diameter of the annular gasket is greater than or equal to the outer diameter of the workpiece; The inner diameter of the spring washer is greater than or equal to the inner diameter of the annular gasket; The inner diameter of the annular hoop is smaller than the outer diameter of the annular gasket.

8. The threaded connection assembly according to claim 4, wherein: The head and / or the nut are provided with a first flat surface at one end facing the annular gasket; When the nut clamps a workpiece between the head and the nut, the first plane is in contact with the axial end surfaces of the spring washer and the annular collar.

9. The threaded connection assembly according to claim 1, wherein: The annular hoop and the spring washer have a radial clearance fit or a transition fit.

10. The threaded connection assembly according to any one of claims 1 to 9, characterized in that: The spring washer includes a first spring washer and a second spring washer; The first spring washer is located between the head and the workpiece; The second spring washer is located between the nut and the workpiece; The annular hoop includes a first annular hoop and a second annular hoop; The first annular hoop is sleeved on the outer ring of the first spring washer; The second annular hoop is sleeved on the outer ring of the first spring washer.

11. The threaded connection assembly according to claim 10, wherein: The first annular hoop and the head of the bolt are independently provided or fixedly connected to form an integral part; The second annular hoop and the nut are independently provided or fixedly connected to form an integral piece.

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