Mechanical equipment, bolt assembly and bolt of bolt assembly

Abstract

The utility model relates to the technical field of machinery, and provides mechanical equipment, a bolt assembly and a bolt thereof.The bolt comprises a bolt rod, a nut connecting end, a deformation opening and a deformation hole which are communicated with each other are formed in the nut connecting end, and the deformation hole comprises an end face opening located in the cross section of the nut connecting end; the deformation hole is suitable for being connected with a self-tapping screw entering from the end face opening in a self-tapping mode, the size is increased, the deformation opening is expanded, the nut connecting end generates size-increased deformation in at least one radial direction, and the purpose of improving the bolt connecting and loosening effect is achieved. According to the connecting mode of the self-tapping screw, only the deformation opening and the deformation hole which are communicated with each other need to be formed, the machining complexity can be reduced, and the probability that machining fails or cannot be conducted in the machining process due to limitation of bolt materials or bolt sizes is reduced; the self-tapping mode is achieved through mutual deformation and extrusion of the self-tapping screw and the bolt, occlusion of the surface layer is damaged, connection is firmer, and the anti-loosening effect is better.

Description

Technical Field

[0001] The utility model relates to the technical field of machinery, in particular to a mechanical device, a bolt assembly and a bolt thereof. Background Art

[0002] Bolts, as a common fastener, are used in many fields to connect two or more components by working with nuts.

[0003] During use, due to the influence of vibration and other factors, bolt connections may become loose, affecting the reliability and safety of the bolt connection equipment. For example, in the automotive field, loose bolt connections in parts such as the car chassis will seriously affect the driving comfort of the car. If the bolt connection falls off, it will seriously affect the safety of the car.

[0004] Therefore, how to improve the anti-loosening effect of bolt connections becomes a technical problem that needs to be solved by those skilled in the art. Utility Model Content

[0005] The utility model provides a mechanical device, a bolt assembly and a bolt thereof, which are used to solve the defect of easy loosening of bolt connections in the prior art and improve the anti-loosening effect of the bolt connections.

[0006] In order to solve the above problems, the utility model provides a bolt, comprising:

[0007] The bolt rod includes a nut connecting end, which is provided with a deformation opening and a deformation hole that are interconnected. The deformation hole includes an end face opening located in the cross section of the nut connecting end. The deformation hole is suitable for connecting with a self-tapping screw that enters from the end face opening and increases in size, thereby expanding the deformation opening and causing the nut connecting end to deform in at least one radial direction.

[0008] According to one embodiment of the present invention, the deformation hole includes a circular hole.

[0009] According to an embodiment of the present invention, the center line of the deformation hole coincides with the axis of the bolt rod.

[0010] According to an embodiment of the present invention, the deformation opening coincides with the radial direction of the cross section in the extension direction of the cross section.

[0011] According to an embodiment of the present invention, the number of the deformation openings is at least two, and the deformation openings are evenly arranged along the circumferential direction of the nut connection end.

[0012] In order to solve the above problems, the present invention further provides a bolt assembly, comprising:

[0013] The bolt as described in any of the above items, wherein the nut connecting end of the bolt is provided with an external thread;

[0014] A nut, wherein the nut is provided with an internal thread matching the external thread;

[0015] A self-tapping screw matches the deformed hole of the bolt and is suitable for self-tapping from the end face opening of the bolt into the deformed hole of the bolt after the nut and the bolt are connected, expanding the deformed hole and the deformed opening of the bolt, thereby increasing the deformation of the nut connection end in at least one radial direction.

[0016] According to one embodiment of the present invention, the depth of the deformation hole of the bolt is greater than or equal to the length of the threaded portion of the self-tapping screw.

[0017] According to one embodiment of the present invention, the self-tapping screw comprises a countersunk head self-tapping screw or a semi-countersunk head self-tapping screw.

[0018] In order to solve the aforementioned problems, the present invention further provides a mechanical device, comprising a bolt assembly as described in any one of the aforementioned items.

[0019] According to one embodiment of the present invention, the mechanical equipment includes a car.

[0020] The present invention provides a mechanical device, a bolt assembly and a bolt thereof, wherein the bolt includes a bolt rod, and the nut connection end of the bolt rod is provided with a deformation opening and a deformation hole that are interconnected, the deformation hole includes an end face opening located at the cross section of the nut connection end, the deformation hole is suitable for connecting with a self-tapping screw that enters from the end face opening and increases in size, and the deformation opening is expanded, so that the nut connection end produces plastic deformation with an increased size in at least one radial direction. In this way, after the preliminary connection of the parts to be connected is completed using the bolt provided by the application and the nut matching the bolt, the bolt connection end protrudes from the nut part structure, and the self-tapping screw is squeezed into the deformation hole in a self-tapping manner to connect with the bolt. The self-tapping screw expands the deformation hole, thereby driving the size of the deformation opening connected to the deformation hole to increase, and at the same time, the nut connection end connected to the self-tapping screw is deformed and increased in size, and the nut is clamped on the bolt, thereby improving the firmness of the connection. It can be seen that the mechanical equipment, bolt assembly and bolts thereof provided in the embodiments of the present application have mutually connected deformation openings and deformation holes at the nut connection end of the bolt, so that the size can be enlarged and deformed by the connection of the self-tapping screw, thereby achieving the purpose of improving the loosening effect of the bolt connection; and the connection method of the self-tapping screw only requires the mutually connected deformation openings and deformation holes to be opened at the nut connection end, which can reduce the processing complexity and reduce the probability of processing failure or inability to process due to limitations of the bolt material or bolt size during the processing; further, the self-tapping connection is achieved by mutual deformation and extrusion of the self-tapping screw and the bolt, and the two destroy the surface bite, so the connection is firmer and the anti-loosening effect is better.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the following briefly introduces the drawings required for use in the embodiments or related technical descriptions. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 It is a structural schematic diagram of the bolt assembly provided by the utility model.

[0024] Figure 2 yes Figure 1 A partial enlarged view of area A is shown.

[0025] Figure 3 This is another structural schematic diagram of the bolt assembly provided by the utility model.

[0026] Reference numerals:

[0027] 1. Bolt; 11. Bolt shank; 12. Bolt head; 111. Nut connection portion; 112. Deformation opening; 112. Deformation hole; 2. Nut; 3. Self-tapping screw. DETAILED DESCRIPTION

[0028] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0029] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0030] In the description of the embodiments of the present invention, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on specific circumstances.

[0031] In the embodiments of the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," or "above" a second feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below," "below," or "below" a second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is lower in level than the second feature.

[0032] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0033] The following combination Figure 1-Figure 3 The mechanical equipment, bolt assembly and bolt thereof according to the embodiments of the present utility model are described.

[0034] Please refer to Figure 1-Figure 3 , Figure 1 This is a structural diagram of the bolt assembly provided by the utility model. Figure 2 yes Figure 1 A partial enlarged view of area A is shown. Figure 3 This is another structural schematic diagram of the bolt assembly provided by the utility model.

[0035] For the convenience of description, the present application first introduces the bolt 1 provided in the embodiment of the present application. Figure 1 and Figure 2 As shown, the bolt 1 provided in the embodiment of the present application includes:

[0036] The bolt rod 11 includes a nut connecting end 111, and the nut connecting end 111 is provided with a deformation opening 112 and a deformation hole 113 that are interconnected. The deformation hole 113 includes an end face opening located in the cross section of the nut connecting end 111. The deformation hole 113 is suitable for connecting with a self-tapping screw 3 that enters from the end face opening and increases in size, thereby expanding the deformation opening 112, so that the nut connecting end 111 is deformed in at least one radial direction to increase in size.

[0037] Of course, the bolt 1 also includes a bolt head 12, which is fixed to one end of the bolt rod 11, and the nut connecting end 111 is located at the end away from the bolt head 12. When the bolt rod 11 passes through the connecting hole of the part to be connected, it is connected to the nut 2 to realize the connection of the part to be connected.

[0038] It is easy to understand that the deformation opening 112 described in this article refers to a structure with openings in both the cross-section and the outer peripheral surface of the nut connection end 111. In this embodiment, the side wall surface of the deformation opening 112 can be a plane or a curved surface. When it is a plane, the extension direction of the plane can be perpendicular to the cross-section or not.

[0039] Of course, the opening of the deformation hole 113 is simpler than the opening of the threaded hole, and there is no need to use a high-strength drill bit, which can reduce the risk of the bolt rod 11 being blown out when the material toughness is insufficient. At the same time, it can also avoid the limitation that the diameter of the threaded hole and the side wall thickness of the threaded hole are almost equal due to the opening of the threaded hole.

[0040] In this way, when using the bolt 1 provided in the present application to connect the parts to be connected, first, the bolt rod 11 of the bolt 1 is passed through the connection hole of the parts to be connected, the bolt head 12 is abutted against one side of one of the parts to be connected, and the nut connection end 111 of the bolt rod 11 passes through the connection hole, and the threaded rod 11 is threadedly connected to the nut 2 to complete the preliminary connection of the parts to be connected. At this time, the nut connection end 111 of the bolt rod 11 protrudes from the nut part structure, and then the self-tapping screw 3 is squeezed into the deformation hole 113 in a self-tapping manner to connect with the bolt 1. The entry of the self-tapping screw 3 will expand the deformation hole 113, and then drive the size of the deformation opening 112 connected to the deformation hole 113 to increase. At the same time, the size of the nut connection end 111 connected to the self-tapping screw 3 will increase, causing deformation, and the nut 2 will be clamped on the bolt 1 to improve the firmness of the connection.

[0041] It can be seen that the bolt provided in the embodiment of the present application has mutually connected deformation openings and deformation holes at the nut connection end of the bolt, so that the size can be enlarged and deformed by the connection of the self-tapping screw, thereby achieving the purpose of improving the loosening effect of the bolt connection; and the connection method of the self-tapping screw only requires the mutual connection of deformation openings and deformation holes at the nut connection end, which can reduce the processing complexity and reduce the probability of processing failure or inability to process due to limitations of the bolt material or bolt size during the processing; further, the self-tapping connection is achieved by mutual deformation and extrusion of the self-tapping screw and the bolt, and the two destroy the surface bite, so the connection is firmer and the anti-loosening effect is better.

[0042] In one embodiment, the deformation hole 113 can be a circular hole, which has a high degree of matching with the shape of the self-tapping screw 3. On the one hand, it can reduce the difficulty of connection, and on the other hand, it can ensure that the force on the bolt rod 11 is more uniform during the self-tapping process.

[0043] Of course, in other embodiments, the deformation hole 113 can also be other shapes, such as: an elliptical hole, a polygonal hole, an irregularly shaped hole, etc., as long as the self-tapping connection between the self-tapping screw 3 and the bolt rod 11 can be achieved, and the nut connection end 111 can be deformed to increase in size in at least one radial direction.

[0044] In some embodiments, the center line of the deformation hole 113 of the bolt 1 provided in the present application coincides with the axis of the bolt rod 11, so that the force position of the bolt rod during the self-tapping connection process of the self-tapping screw 3 is in the middle of the bolt rod 11, thereby improving the force uniformity at different positions of the bolt rod 11.

[0045] It is easy to understand that while the center line of the deformation hole 113 coincides with the axis of the bolt rod 11 , the shape of the deformation hole 113 can be circular, thereby ensuring uniform force on the bolt rod 11 from different angles.

[0046] Of course, in other embodiments, the center line of the deformation hole 113 of the bolt 1 may not coincide with the axis of the bolt rod 11, that is, the center line of the deformation hole 113 is located on one side of the axis, as long as the self-tapping connection between the self-tapping screw 3 and the bolt rod 11 can be achieved, and the nut connection end 111 is deformed to increase in size in at least one radial direction.

[0047] It is easy to understand that, in some embodiments, the deformation opening 112 of the bolt 1 provided in the present application may coincide with the radial direction of the cross section in the extension direction of the cross section.

[0048] In this way, when the self-tapping screw 3 is self-drilled into the deformation hole 113 , the deformation opening 112 can gradually expand in the radial direction, thereby improving the force uniformity of the nut connection end 111 and the bolt rod 11 .

[0049] Of course, in other embodiments, the deformation opening 112 of the bolt 1 may not coincide with the radial direction of the cross-section in the extension direction of the cross-section, and may only be connected to the deformation hole 113. As long as the self-tapping connection between the self-tapping screw 3 and the bolt rod 11 can be achieved, the nut connection end 111 can be deformed to increase in size in at least one radial direction.

[0050] It should be noted that, in other embodiments, the above-mentioned various schemes for improving the force uniformity of the bolt rod 11 can be arbitrarily combined to ensure the force uniformity of the bolt rod 11 from multiple aspects, for example: the deformation hole 113 is a circular hole, and the center line of the deformation hole 11131 coincides with the axis of the bolt rod 11, while the deformation opening 112 coincides with the radial direction of the cross section in the extension direction of the cross section; the deformation hole 113 is a circular hole, and the deformation opening 112 coincides with the radial direction of the cross section in the extension direction of the cross section; or the center line of the deformation hole 11131 coincides with the axis of the bolt rod 11, while the deformation opening 112 coincides with the radial direction of the cross section in the extension direction of the cross section.

[0051] Furthermore, in some embodiments, the number of the deformation openings 112 of the bolt 1 provided in the present application may be at least two, and the deformation openings 112 are evenly arranged along the circumferential direction of the nut connection end 111 .

[0052] It is easy to understand that the number of the above-mentioned deformable openings 112 can be at least two, which means that the number of the deformable openings 112 can be 2, 3, 4 or multiple, and can be an odd number or an even number.

[0053] Thus, when the self-tapping screw 3 is self-drilled into the deformation hole 113, each deformation opening 112 expands. On the one hand, it can reduce the difficulty of connecting the self-tapping screw 3, and on the other hand, it can improve the deformation uniformity of different parts of the nut connection end 111, further improve the anti-loosening effect, and of course, improve the stress condition of the bolt 1.

[0054] Specifically, in some embodiments, the width of the deformable opening 112 can be adjusted based on the diameter of the bolt shank 11, and the diameter of the deformable hole 3 can also be adjusted based on the diameter of the bolt shank 11, thereby ensuring the strength of the bolt shank 11 while meeting the deformation requirements. For example, the width of the deformable opening 112 is positively correlated with the diameter of the bolt shank 11; the diameter of the deformable hole 3 is positively correlated with the diameter of the bolt shank 11.

[0055] Please continue to refer to Figure 1 and Figure 3 In another embodiment, the present application further provides a bolt assembly, comprising:

[0056] As with the bolt 1 provided in any of the aforementioned embodiments, the nut connection end 111 of the bolt 1 is provided with an external thread;

[0057] Nut 2 has an internal thread matching the external thread.

[0058] The self-tapping screw 3 matches the deformation hole 113 of the bolt 1 and is suitable for self-tapping into the deformation hole 113 of the bolt 1 from the end face opening of the bolt 1 after the nut 2 and the bolt 1 are connected, expanding the deformation hole 113 and the deformation opening 112 of the bolt 1, thereby increasing the deformation of the nut connection end in at least one radial direction.

[0059] As mentioned above, when using the bolt assembly provided by the present application to connect the parts to be connected, first, the bolt rod 11 of the bolt 1 is passed through the connection hole of the parts to be connected, the bolt head 12 is abutted against one side of one of the parts to be connected, and the nut connection end 111 of the bolt rod 11 is passed through the connection hole, and the threaded rod 11 is threadedly connected to the nut 2 to complete the preliminary connection of the parts to be connected. At this time, the nut connection end 111 of the bolt rod 11 protrudes from the nut part structure, and then the self-tapping screw 3 is squeezed into the deformation hole 113 in a self-tapping manner to connect with the bolt 1. The entry of the self-tapping screw 3 will expand the deformation hole 113, and then drive the size of the deformation opening 112 connected to the deformation hole 113 to increase, and at the same time, the size of the nut connection end 111 connected to the self-tapping screw 3 will increase, causing deformation, and the nut 2 will be clamped on the bolt 1, thereby improving the firmness of the connection and preventing the connection from loosening.

[0060] It can be seen that the bolt assembly provided in the embodiment of the present application has mutually connected deformation openings and deformation holes at the nut connection end of the bolt, so that the size can be enlarged and deformed by the connection of the self-tapping screw, thereby achieving the purpose of improving the loosening effect of the bolt connection; and the connection method of the self-tapping screw only requires the mutual connection of deformation openings and deformation holes at the nut connection end, which can reduce the processing complexity and reduce the probability of processing failure or inability to process due to limitations of the bolt material or bolt size during the processing; further, the self-tapping connection is achieved by mutual deformation and extrusion of the self-tapping screw and the bolt, and the two destroy the surface bite, so the connection is firmer and the anti-loosening effect is better.

[0061] To facilitate the connection of the automatic screw 3 , in some embodiments, the depth of the deformation hole 113 of the bolt 11 is greater than or equal to the length of the threaded portion of the self-tapping screw 3 .

[0062] To further increase the deformation of the nut connection end, in some embodiments, the self-tapping screw 3 may include a countersunk self-tapping screw or a semi-countersunk self-tapping screw. In this way, the nut portion of the countersunk self-tapping screw or the semi-countersunk self-tapping screw can be embedded in the deformation hole 113, expanding the deformation hole 113 and increasing the deformation of the nut connection end.

[0063] In another embodiment, the present application also provides a mechanical device, comprising the bolt assembly as described in any of the aforementioned embodiments.

[0064] Specifically, in some embodiments, the mechanical device provided by the present application includes a car.

[0065] In the mechanical equipment provided by the embodiment of the present application, the nut connection end of the bolt in the bolt assembly used is provided with mutually connected deformation openings and deformation holes, so that the size can be enlarged and deformed by the connection of the self-tapping screw, thereby achieving the purpose of improving the loosening effect of the bolt connection; and the connection method of the self-tapping screw only requires the formation of mutually connected deformation openings and deformation holes at the nut connection end, which can reduce the processing complexity and reduce the probability of processing failure or non-processing due to the limitation of the bolt material or bolt size during the processing; further, the self-tapping connection is achieved by mutual deformation and extrusion between the self-tapping screw and the bolt, and the two destroy the surface bite, so the connection is firmer and the anti-loosening effect is better.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A bolt, characterized in that: include: The bolt rod includes a nut connecting end, which is provided with a deformation opening and a deformation hole that are interconnected. The deformation hole includes an end face opening located in the cross section of the nut connecting end. The deformation hole is suitable for connecting with a self-tapping screw that enters from the end face opening and increases in size, thereby expanding the deformation opening and causing the nut connecting end to deform in at least one radial direction.

2. The bolt according to claim 1, wherein The deformation hole includes a circular hole.

3. The bolt according to claim 1, wherein The center line of the deformation hole coincides with the axis of the bolt rod.

4. The bolt according to claim 3, wherein The deformation opening coincides with the radial direction of the cross section in an extension direction of the cross section.

5. The bolt according to any one of claims 1 to 4, characterized in that: The number of the deformation openings is at least two, and the deformation openings are evenly arranged along the circumferential direction of the nut connection end.

6. A bolt assembly, characterized in that: include: The bolt according to any one of claims 1 to 5, wherein the nut connecting end of the bolt is provided with an external thread; A nut, wherein the nut is provided with an internal thread matching the external thread; A self-tapping screw matches the deformed hole of the bolt and is suitable for self-tapping from the end face opening of the bolt into the deformed hole of the bolt after the nut and the bolt are connected, expanding the deformed hole and the deformed opening of the bolt, thereby increasing the deformation of the nut connection end in at least one radial direction.

7. The bolt assembly according to claim 6, wherein: The depth of the deformation hole of the bolt is greater than or equal to the length of the threaded portion of the self-tapping screw.

8. The bolt assembly according to claim 6, wherein: The self-tapping screws include countersunk head self-tapping screws or semi-countersunk head self-tapping screws.

9. A mechanical device, characterized in that: Comprising the bolt assembly according to any one of claims 6 to 8.

10. The mechanical device according to claim 9, characterized in that The mechanical equipment includes an automobile.

Images