Threaded connection assembly and electrical equipment

Abstract

The utility model discloses a threaded connection assembly and electrical equipment. The threaded connection assembly comprises a threaded fastener and a buffer sleeve arranged on the periphery of the threaded fastener in a sleeving mode. The threaded fastener comprises a threaded part, a rod part and a head part which are sequentially arranged along the axis of the threaded fastener, and the rod part is connected between the threaded part and the head part. The buffering sleeve comprises a connecting cylinder part and a deformation cylinder part which are connected with each other, the connecting cylinder part is arranged on the periphery of the rod part in a sleeving mode, the deformation cylinder part surrounds the threaded part, and the inner diameter of the deformation cylinder part is larger than or equal to the maximum outer diameter of the threaded part. When the assembly part is fixed to the assembled part through the threaded connection assembly, the deformation cylinder part surrounding the outside of the threaded part can be extruded by the assembled part to generate elastic deformation, and then a buffer structure located between the assembly part and the assembled part is formed. The buffer structure can effectively prevent vibration and noise generated at the assembly part from being transmitted to the assembled part, so that the vibration and noise of the whole system are effectively reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of screws, and more particularly, to a threaded connection assembly and an electrical device. BACKGROUND

[0002] In existing electrical devices (for example, projectors), there are usually vibrating components, such as heat dissipation fans, motors, and the like. The vibration and noise generated by the vibrating components when working can interfere with other functional components in the electrical device, thereby affecting the normal work of the electrical device. CONTENT

[0003] The present application provides a threaded connection assembly and an electrical device.

[0004] According to a first aspect of the present application, the present application provides a threaded connection assembly, which comprises a threaded fastener and a buffer sleeve sleeved on the outer periphery of the threaded fastener. The threaded fastener comprises a threaded portion, a rod portion and a head portion arranged in sequence along the axis of the threaded fastener, and the rod portion is connected between the threaded portion and the head portion. The buffer sleeve comprises a connecting cylinder portion and a deformation cylinder portion connected to each other, the connecting cylinder portion is sleeved on the outer periphery of the rod portion, and the deformation cylinder portion surrounds the outside of the threaded portion, and the inner diameter of the deformation cylinder portion is greater than or equal to the maximum outer diameter of the threaded portion.

[0005] In some possible embodiments, a part of the threaded portion is accommodated in the deformation cylinder portion, and the end of the threaded portion protrudes away from one end of the connecting cylinder portion relative to the deformation cylinder portion.

[0006] In some possible embodiments, there is a gap between the outer peripheral wall of the threaded portion and the inner wall of the deformation cylinder portion.

[0007] In some possible embodiments, the deformation cylinder portion is provided with a deformation groove, the deformation groove penetrates through the outer wall and the inner wall of the deformation cylinder portion, and the deformation groove extends along the axial direction of the threaded fastener.

[0008] In some possible embodiments, the number of deformation grooves is multiple, and the multiple deformation grooves are arranged in the circumferential direction of the threaded fastener; each deformation groove penetrates through one end of the deformation cylinder portion away from the connecting cylinder portion.

[0009] In some possible embodiments, the connecting cylinder portion is in interference fit with the rod portion, and the maximum outer diameter of the rod portion is greater than the maximum outer diameter of the threaded portion.

[0010] In some possible embodiments, the outer diameter of the head portion is greater than the outer diameter of the rod portion; the buffer sleeve further comprises a flange portion, the flange portion is connected to one end of the connecting cylinder portion away from the deformation cylinder portion, the outer diameter of the flange portion is greater than the outer diameter of the connecting cylinder portion, and the flange portion is in contact with the side of the head portion facing the rod portion.

[0011] In some possible embodiments, the buffer sleeve is a silica gel buffer sleeve or a foam buffer sleeve.

[0012] According to a second aspect of the present application, the embodiments of the present application further provide an electrical device, which comprises a bracket, an electrical module and the threaded connection assembly described above. The bracket is provided with a threaded hole, the electrical module is arranged on the bracket, and the electrical module is provided with a connecting through hole. The rod portion and the connecting barrel portion of the threaded connection assembly are arranged through the connecting through hole, the threaded portion is arranged in the threaded hole and is threadedly connected with the threaded hole, and the deformed barrel portion is located between the bracket and the electrical module.

[0013] In some possible embodiments, the bracket comprises a mounting surface, and the threaded hole is arranged on the mounting surface. The electrical module comprises a first surface and a second surface which are opposite to each other, and the connecting through hole penetrates through the first surface and the second surface. The first surface is stacked on the mounting surface, the deformed barrel portion is pressed between the mounting surface and the first surface, and the head portion abuts against the second surface.

[0014] In some possible embodiments, the deformed barrel portion comprises a first laminated portion and a second laminated portion, the second laminated portion is connected between the first laminated portion and the connecting barrel portion, and the mounting surface, the first laminated portion, the second laminated portion and the first surface are sequentially laminated.

[0015] In some possible embodiments, a shoulder step is formed between the rod portion and the threaded portion. The step surface of the shoulder step is located on the side of the rod portion facing the mounting surface, and is arranged in a spaced manner with the mounting surface to form a positioning gap, and the end of the first laminated portion is embedded in the positioning gap.

[0016] In some possible embodiments, a shoulder step is formed between the rod portion and the threaded portion. The step surface of the shoulder step is located on the side of the rod portion facing the mounting surface, and is arranged in a spaced manner with the mounting surface to form a positioning gap, and the end of the first laminated portion is embedded in the positioning gap.

[0017] In some possible embodiments, the electrical module comprises a shell and a functional component arranged in the shell, and the functional component comprises a fan or a motor. The shell is provided with a plurality of connecting through holes, and the connecting through holes are located around the shell. The bracket is provided with a plurality of threaded holes corresponding to the connecting through holes. The number of the threaded connection assemblies is plural, and the plurality of threaded connection assemblies are arranged through the connecting through holes one by one and are threadedly connected with the corresponding threaded holes.

[0018] The embodiments of the present application provide a threaded connection assembly and an electrical device. The threaded connection assembly is used for fixing an assembled component to a component to be assembled. For example, the assembled component can be a heat dissipation fan, a motor or other parts or electrical elements which are prone to vibration, and the component to be assembled can be a bracket of the parts or electrical elements.

[0019] When the threaded connecting assembly fixes the assembled part to the assembled part, the rod part and the connecting cylinder part can be arranged in the assembled part, so that the head part abuts against the assembled part. The threaded part can be screwed with the assembled part, at this time, the elastic deformation cylinder part surrounding the threaded part is elastically deformed by the extrusion of the assembled part, and then the buffer structure between the assembled part and the assembled part is formed. Therefore, the existence of the buffer structure can absorb the vibration and noise generated at the assembled part, for example, the threaded fastener can be deformed in the axial direction to absorb the vibration energy, and the vibration and noise can be effectively prevented from being transmitted to the assembled part, so as to effectively reduce the vibration and noise of the whole system, so as to ensure the normal work of the electrical equipment provided with the threaded connecting assembly.

[0020] In addition, the connecting cylinder part sleeved on the outer periphery of the rod part can also play a role in absorbing vibration and noise to a certain extent, so that the connecting cylinder part can play a role in deforming and buffering in the radial direction of the threaded fastener, so as to prevent the vibration and noise generated at the assembled part from being transmitted to the threaded fastener. In summary, under the cooperation of the connecting cylinder part and the above-mentioned buffer structure, the vibration and noise can be buffered in multiple directions of the assembled part, so as to improve the vibration reduction effect. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0022] Figure 1 is a structural schematic view of a threaded connecting assembly provided by the embodiments of the present application.

[0023] Figure 2 is Figure 1 is a sectional view of the threaded connecting assembly shown in the figure.

[0024] Figure 3 is another structural schematic view of the threaded connecting assembly provided by the embodiments of the present application.

[0025] Figure 4 is Figure 3 is a sectional view of the threaded connecting assembly shown in the figure.

[0026] Figure 5 is a structural schematic view of an electrical equipment provided by the embodiments of the present application.

[0027] Figure 6 is Figure 5 is a sectional view of the electrical equipment shown in the figure.

[0028] Figure 7 is Figure 6A close-up view of the middle region A.

[0029] Figure 8 is Figure 5 Another cross-sectional view of the electrical device.

[0030] Figure 9 is Figure 8 A close-up view of the middle region B. DETAILED DESCRIPTION

[0031] In order to enable persons skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by persons skilled in the art without creative work are within the scope of protection of the present application.

[0032] The present application provides a threaded connection assembly 100 for fixing an assembled part to a to-be-assembled part to prevent vibration and noise generated by the assembled part from being transmitted to the to-be-assembled part. For example, the assembled part can be a heat dissipation fan, a motor, or other parts or electrical elements prone to vibration, and the to-be-assembled part can be a bracket of the parts or electrical elements.

[0033] Please refer to Figure 1 and Figure 2 The threaded connection assembly 100 can include a threaded fastener 20 and a buffer sleeve 30 sleeved on the outer periphery of the threaded fastener 20. The threaded fastener 20 can include a threaded portion 210, a rod portion 230, and a head portion 250 arranged in sequence along an axis L of the threaded fastener 20, and the rod portion 230 is connected between the threaded portion 210 and the head portion 250. The buffer sleeve 30 can include a connecting cylinder portion 320 and a deformation cylinder portion 340 connected to each other, the connecting cylinder portion 320 is sleeved on the outer periphery of the rod portion 230, and the deformation cylinder portion 340 is wrapped outside the threaded portion 210, and the inner diameter of the deformation cylinder portion 340 is greater than or equal to the maximum outer diameter of the threaded portion 210.

[0034] When the threaded connecting assembly 100 fixes the assembled part to the assembled part, the rod part 230 and the connecting cylinder part 320 can be arranged through the assembled part, so that the head part 250 abuts against the assembled part. The threaded part 210 can be screwed with the assembled part, at this time, the elastic deformation cylinder part 340 surrounding the threaded part 210 is elastically deformed by the extrusion of the assembled part, thereby forming a buffer structure between the assembled part and the assembled part. Therefore, the existence of the buffer structure can absorb the vibration and noise generated at the assembled part, for example, the threaded fastener 20 can be deformed in the axial direction to absorb the vibration energy, which can effectively prevent the vibration and noise from being transmitted to the assembled part, thereby effectively reducing the vibration and noise of the entire system, so as to ensure the normal work of the electrical equipment installed with the threaded connecting assembly 100.

[0035] In addition, the connecting cylinder part 320 sleeved on the outer periphery of the rod part 230 can also play a role in absorbing vibration and noise to a certain extent, therefore, the connecting cylinder part 320 can play a role in deforming and buffering in the radial direction of the threaded fastener 20, so as to prevent the vibration and noise generated at the assembled part from being transmitted to the threaded fastener 20. In summary, under the cooperation of the connecting cylinder part 320 and the above-mentioned buffer structure, the buffer and shock absorption in multiple directions of the assembled part can be realized, so as to improve the shock absorption effect.

[0036] The specific implementation mode of the threaded connecting assembly 100 will be introduced below.

[0037] In the embodiment, the threaded fastener 20 is used to fix the assembled part to the assembled part, for example, the assembled part is provided with a connecting through hole for the threaded fastener 20 to pass through, and the assembled part is provided with a threaded hole matched with the threaded fastener, so that the threaded fastener 20 is screwed with the assembled part after passing through the assembled part, thereby fixing the assembled part to the assembled part. Specifically, the threaded fastener 20 can be a screw, a bolt, a stud, a screw and the like. The material of the threaded fastener 20 can be metal (for example, carbon steel, stainless steel, aluminum alloy, titanium alloy, brass and the like), or plastic (for example, nylon PA66, polypropylene PP, polyvinyl chloride PVC and the like), which is not limited in the embodiment.

[0038] In the present embodiment, the threaded fastener 20 can include a threaded portion 210, a shank portion 230, and a head portion 250 arranged in sequence along the self-axis L, wherein the shank portion 230 is connected between the threaded portion 210 and the head portion 250. It should be understood herein that both the threaded portion 210 and the shank portion 230 belong to the "body" of the threaded fastener 20, for example, the body of the threaded fastener 20 is substantially a circular rod, and one end of the body is provided with the head portion 250. The other end of the body can be processed by cutting, turning, milling, grinding, etc., so that the surface thereof is threaded. That is, the present embodiment refers to the portion of the body provided with threads as the "threaded portion", and refers to the other portion of the body not provided with threads as the "shank portion".

[0039] In some possible embodiments, the maximum outer diameter of the shank portion 230 can be greater than the maximum outer diameter of the threaded portion 210, so that a shoulder step 220 can be formed at the connection between the shank portion 230 and the threaded portion 210. When the threaded portion 210 is threadedly connected with the assembled part, the shoulder step 220 can abut against the surface of the assembled part, thereby limiting the threaded fastener 20, so as to avoid the threaded fastener 20 from being excessively "screwed in" the assembled part.

[0040] The head portion 250 is located at the end of the shank portion 230 away from the threaded portion 210. In the present embodiment, the outer diameter of the head portion 250 is greater than the outer diameter of the shank portion 230, so that when the threaded fastener 20 is arranged in the assembled part, the head portion 250 can limit the threaded fastener 20, and when the head portion 250 abuts against the assembled part and the threaded portion 210 is threadedly connected with the assembled part, the head portion 250 generates pressure on the assembled part, and utilizes the tension between the threaded portion and the assembled part, i.e., can fix the assembled part. As a specific example, the head portion 250 can be flat, bullet-shaped, semi-circular, etc., and the side of the head portion 250 away from the shank portion 230 can be provided with a groove 2520 compatible with a screwdriver, for example, a slot, a cross slot, a hexagonal slot, etc. In other embodiments, the outer diameter of the head portion 250 can be not greater than the outer diameter of the shank portion 230, and the head portion 250 can be provided with external threads and cooperate with a nut to fix the assembled part.

[0041] It should be noted herein that the naming of the "threaded portion", "shank portion", and "head portion" is made for the convenience of description, and in specific examples, there can be or can not be a clear boundary between the structures of the three. In some possible embodiments, the threaded portion 210, the shank portion 230, and the head portion 250 can be integrally formed structures, for example, the threaded fastener 20 can be made of plastic or metal by injection molding process or machining, and the threaded portion 210, the shank portion 230, and the head portion 250 are three parts at different positions of the threaded fastener 20, respectively.

[0042] In the present embodiment, the buffer sleeve 30 is sleeved on the outer periphery of the threaded fastener 20, which is used to absorb the vibration and noise generated by the assembled parts during operation. Specifically, the buffer sleeve 30 is a silica gel buffer sleeve or a foam cotton buffer sleeve, of course, the buffer sleeve 30 can also be made of other materials with elastic buffering capacity, and the present embodiment does not limit this.

[0043] In the present embodiment, the buffer sleeve 30 can include a connecting barrel portion 320 and a deformation barrel portion 340 connected to each other, and the connecting barrel portion 320 is sleeved on the outer periphery of the rod portion 230. In some possible embodiments, the connecting barrel portion 320 can be substantially cylindrical, and the inner diameter of the connecting barrel portion 320 can be slightly smaller than the outer diameter of the rod portion 230, so that the connecting barrel portion 320 is in interference fit with the rod portion 230. In this case, the buffer sleeve 30 can be tightly fitted with the threaded fastener 20 to prevent the buffer sleeve 30 from falling off the threaded fastener 20, and to ensure the reliable use of the threaded connection assembly 100.

[0044] The deformation barrel portion 340 surrounds the threaded portion 210, and the inner diameter of the deformation barrel portion 340 is greater than or equal to the maximum outer diameter of the threaded portion 210. During the screwing of the threaded portion 210 with the threaded hole of the assembled part, the end of the deformation barrel portion 340 abuts against the surface of the assembled part, and as the screwing depth of the threaded portion increases, the deformation barrel portion 340 is gradually pushed and deformed to accumulate on the surface of the assembled part; when the threaded connection assembly 100 fixes the assembled part to the assembled part, the deformation barrel portion 340 is elastically deformed by the compression of the assembled part and the assembled part, thereby forming a buffer structure between the assembled part and the assembled part. The buffer structure can play a buffering and damping role in the axial direction of the threaded fastener 20 to absorb the vibration and noise generated at the assembled part, effectively preventing the vibration and noise from being transmitted to the assembled part.

[0045] In some possible embodiments, a portion of the threaded portion 210 is accommodated in the deformation barrel portion 340, and the end of the threaded portion 210 protrudes away from one end of the connecting barrel portion 320 relative to the deformation barrel portion 340, so that during installation, the protruding portion of the threaded portion 210 can be more easily "screwed into" the threaded hole provided on the assembled part, reducing the installation difficulty between the threaded connection assembly 100 and the assembled part.

[0046] In some possible embodiments, the inner diameter of the deformation cylinder portion 340 is greater than the maximum outer diameter of the threaded portion 210, so that there is a gap between the outer peripheral wall of the threaded portion 210 and the inner wall of the deformation cylinder portion 340. The presence of the gap makes the deformation cylinder portion 340 more easily elastically deformed when subjected to the extrusion between the assembled component and the assembled component, thereby compressing between the assembled component and the assembled component. It is not difficult to understand that if the inner diameter of the deformation cylinder portion 340 is equal to the maximum outer diameter of the threaded portion 210, the deformation cylinder portion 340 will be attached to the outer peripheral wall of the threaded portion 210, resulting in a certain friction between the deformation cylinder portion 340 and the threaded portion 210. The friction will hinder the elastic deformation of the deformation cylinder portion 340 to some extent, thereby increasing the installation difficulty between the assembled component and the assembled component.

[0047] Referring to Figure 3 and Figure 4 , the deformation cylinder portion 340 can be provided with a deformation groove 3410, which can penetrate the outer wall and the inner wall of the deformation cylinder portion 340 along the radial direction of the threaded fastener 20 (not shown in the figure), and extend along the axial direction of the threaded fastener 20. The "axial direction" here refers to the direction of the axis L of the threaded fastener 20. The deformation cylinder portion 340 in the embodiment is provided with the deformation groove 3410, so that the deformation cylinder portion 340 can be more easily elastically deformed when subjected to the extrusion of the assembled component, thereby reducing the installation difficulty between the assembled component and the assembled component. As an example, the deformation groove 3410 extends along the axial direction of the threaded fastener 20 and penetrates the end face of the deformation cylinder portion 340.

[0048] In some possible embodiments, the number of deformation grooves 3410 is multiple, and the multiple deformation grooves 3410 are arranged in sequence along the circumferential direction of the threaded fastener 20. Each deformation groove 3410 penetrates one end of the deformation cylinder portion 340 away from the connecting cylinder portion 320. Specifically, the multiple deformation grooves 3410 can be arranged at equal intervals to separate the deformation cylinder portion 340 into multiple deformation petals. When the deformation cylinder portion 340 is subjected to the extrusion of the assembled component, each deformation petal can be elastically bent or extruded in the radial direction of the threaded fastener 20 to form a buffer structure between the assembled component and the assembled component. Specifically, the number of deformation grooves 3410 can be 3, 4, 6, etc., which is not limited in the embodiment.

[0049] Referring to Figure 2 and Figure 4In the embodiment, the buffer sleeve 30 can further include a flange portion 360 connected to the connecting cylinder portion 320 at an end thereof away from the deformation cylinder portion 340, the flange portion 360 having an outer diameter greater than that of the connecting cylinder portion 320, and the flange portion 360 being in contact with a side of the head portion 250 facing the rod portion 230. Specifically, the head portion 250 can be substantially hemispherical or cylindrical, and the side thereof facing the rod portion 230 can be planar to be in contact with the flange portion 360. The flange portion 360 can be substantially ring-shaped and can have a size substantially matching that of the head portion 250. When the head portion 250 is in abutment with the assembly, the flange portion 360 can be located between the assembly and the head portion 250, such that, when the threaded portion 210 is tightened, the flange portion 360 is compressed by the head portion 250 and the assembly, and the flange portion 360 can prevent, to a certain extent, the vibration and noise generated at the assembly from being transmitted to the head portion 250. That is, the flange portion 360 can further function as a shock absorber in the axial direction of the threaded fastener.

[0050] Therefore, the buffer structure formed after the elastic deformation of the deformation cylinder portion 340, the connecting cylinder portion 320 and the flange portion 360 can cooperate to achieve the shock absorption and damping of the assembly in multiple directions, thereby improving the damping effect. That is, in multiple degrees of freedom, the assembly and the assembled assembly are isolated by the buffer sleeve 30, and the assembly and the threaded fastener 20 are isolated by the buffer sleeve 30, so that the buffer sleeve 30 can fully absorb the vibration and noise generated by the assembly, thereby improving the damping effect.

[0051] It should be noted that the names of the "connecting cylinder portion", "deformation cylinder portion" and "flange portion" are only for convenience of description, and in specific examples, there can be or can not be a clear boundary between the structures of the three. In some possible embodiments, the connecting cylinder portion 320, the deformation cylinder portion 340 and the flange portion 360 can be integrally formed, for example, the buffer sleeve 30 can be made of an elastic material (for example, silicone, foamed material EVA, etc.) by an injection molding process, and the connecting cylinder portion 320, the deformation cylinder portion 340 and the flange portion 360 are three parts at different positions of the buffer sleeve 30.

[0052] Referring to Figure 5 The embodiment of the present application also provides an electrical device 400, which can include a bracket 50, an electrical module 60 and the threaded connection assembly 100 described above. The electrical module 60 can be regarded as the "assembly" described above, the bracket 50 can be regarded as the "assembled assembly" described above, and the threaded connection assembly 100 is used to fix the electrical module 60 to the bracket 50. For example, the electrical device 400 can be a projector (for example, a laser projector), the bracket 50 can be a housing of the projector, and the electrical module 60 can be a fan module or a motor module inside the projector. Specifically, in the embodiment, the bracket 50 can be a housing of the projector, the electrical module 60 can be a fan module or a motor module inside the projector, and the threaded connection assembly 100 can be used to fix the fan module or the motor module to the housing of the projector. Figure 5In the embodiment shown, the electrical module 60 is a fan module.

[0053] Referring to Figure 6 and Figure 7 The bracket 50 can be provided with threaded holes 520, the electrical module 60 is arranged on the bracket 50, and the electrical module 60 can be provided with connecting through holes 610 penetrating through opposite sides of the electrical module 60. The rod portion 230 and the connecting barrel portion 320 of the threaded connection assembly 100 are arranged in the connecting through holes 610, the threaded portion 210 is inserted into the threaded holes 520 and is threadedly connected with the threaded holes 520, and the deformed barrel portion 340 is located between the bracket 50 and the electrical module 60. Specifically, as the threaded portion 210 is continuously screwed into the threaded holes 520, the deformed barrel portion 340 is elastically deformed by being extruded by the bracket 50, thereby forming a buffer structure between the bracket 50 and the electrical module 60. Therefore, the existence of the buffer structure can effectively prevent the vibration and noise generated at the electrical module 60 from being transmitted to the bracket 50, thereby effectively reducing the vibration and noise of the entire system, so as to ensure the normal operation of the electrical equipment 400 provided with the threaded connection assembly 100.

[0054] In some possible embodiments, the electrical module 60 can include a housing 630 and a functional part 650 arranged in the housing 630, and the housing 630 plays a role of fixing and protecting the functional part 650. The functional part 650 can include a fan or a motor, and in Figure 6 In the embodiment shown, the functional part 650 is a fan (for example, a cooling fan).

[0055] Specifically, the housing 630 is provided with a plurality of connecting through holes 610 penetrating through opposite sides of the housing 630, and the plurality of connecting through holes 610 can be located at four corners of the housing 630, respectively. Figure 6 In the embodiment shown, the number of connecting through holes 610 is four. The bracket 50 is provided with a plurality of threaded holes 520 corresponding to the connecting through holes 610. The number of threaded connection assemblies 100 is plural, and the plurality of threaded connection assemblies 100 are arranged in the connecting through holes 610 one by one and are threadedly connected with the corresponding threaded holes 520. In this embodiment, the electrical module 60 is fixed to the bracket 50 by the plurality of threaded connection assemblies 100, which can improve the connection reliability between the electrical module 60 and the bracket 50 on the one hand. On the other hand, since each threaded connection assembly 100 can play a damping effect, the overall damping effect of the electrical equipment 400 can be improved.

[0056] In some possible embodiments, the bracket 50 can include a mounting surface 540, and the threaded hole 520 is arranged on the mounting surface 540. The shell 630 can include a first surface (not shown in the figure) and a second surface 6320 facing away from each other, and the connecting through hole 610 penetrates through the first surface and the second surface 6320. Among them, the first surface is superimposed on the mounting surface 540, and the deformed cylinder portion 340 is pressed between the mounting surface 540 and the first surface to form a buffer structure between the mounting surface 540 and the first surface. The head portion 250 abuts against the second surface 6320. It should be noted that “A abuts against B” herein can mean that A directly abuts against B, or indirectly abuts against B, for example, there can be an intermediate part between A and B. In some possible embodiments, when the buffer sleeve 30 includes the flange portion 360, the flange portion 360 is located between the second surface 6320 and the head portion 250, so that the head portion 250 abuts against the second surface 6320 through the flange portion 360.

[0057] In some possible embodiments, the threaded connection assembly 100 adopts a structure as shown in Figure 1 When the deformed cylinder portion 340 is not provided with the deformed groove 3410, the deformed cylinder portion 340 is pressed and bent. Specifically, the deformed cylinder portion 340 can include a first laminated portion 3410 and a second laminated portion 3430, the second laminated portion 3430 is connected between the first laminated portion 3410 and the connecting cylinder portion 320, and the mounting surface 540, the first laminated portion 3410, the second laminated portion 3430 and the first surface are sequentially laminated. It can be understood that, under the pressing of the bracket 50, the deformed cylinder portion 340 will be folded as a whole to form the first laminated portion 3410 and the second laminated portion 3430, thereby increasing the overall thickness of the buffer structure formed by the deformed cylinder portion 340, to improve the damping effect.

[0058] Further, in this embodiment, the shoulder step 220 is formed between the rod portion 230 and the threaded portion 210, the step surface of the shoulder step 220 is located on the side of the rod portion 230 facing the mounting surface 540, and is spaced apart from the mounting surface 540 to form a positioning gap (not marked in the figure), and the end of the first laminated portion 3410 is embedded in the positioning gap. Therefore, part of the structure of the first laminated portion 3410 in the embodiment will be embedded between the bracket 50 and the rod portion 230, so that even in the case that part of the vibration and noise is transmitted to the threaded fastener 20, the vibration and noise are difficult to be transmitted to the bracket 50 due to the existence of the first laminated portion 3410, to ensure the overall damping effect of the electrical equipment 400.

[0059] In some other possible embodiments, the threaded connection assembly 100 adopts a structure as shown in Figure 3 When the deformed cylinder portion 340 is provided with the deformed groove 3410, the deformed cylinder portion 340 is pressed and folded. Please refer to Figure 8 andFigure 9 A shoulder step 220 is formed between the rod portion 230 and the threaded portion 210, and a step surface of the shoulder step 220 is located on a side of the rod portion 230 facing the mounting surface 540 and is fitted to the mounting surface 540. Thus, the shoulder step 220 can function as a limit during continuous screwing of the threaded portion 210 into the threaded hole 520. The deformation cylinder portion 340 extends along the plane of the first surface to be fitted in a gap between the mounting surface 540 and the first surface, thereby preventing transmission of vibration and noise generated at the electrical module 60 to the bracket 50.

[0060] In some possible embodiments, the length of the rod portion 230 along the axis L of the threaded fastener 20 can be greater than the length of the connecting through hole 610, so that a gap between the mounting surface 540 and the first surface can be ensured when the shoulder step 220 is fitted to the mounting surface 540. The presence of the gap can prevent the deformation cylinder portion 340 from being completely compressed and can ensure that the deformation cylinder portion 340 has a certain elastic allowance to absorb noise generated by the electrical module 60.

[0061] In addition, in the case where the buffer sleeve 30 includes the flange portion 360, since the length of the rod portion 230 is greater than the length of the connecting through hole 610, the flange portion 360 can also be prevented from being completely compressed, and a certain elastic allowance of the flange portion 360 can be ensured to absorb noise generated by the electrical module 60.

[0062] The embodiments of the present application provide a threaded connection assembly 100 and an electrical equipment 400 provided with the threaded connection assembly 100. The threaded connection assembly 100 can include a threaded fastener 20 and a buffer sleeve 30 sleeved on the outer periphery of the threaded fastener 20. The threaded fastener 20 can include a threaded portion 210, a rod portion 230 and a head portion 250 arranged in sequence along an axis L thereof, and the rod portion 230 is connected between the threaded portion 210 and the head portion 250. The buffer sleeve 30 can include a connecting cylinder portion 320 and a deformation cylinder portion 340 connected to each other, the connecting cylinder portion 320 is sleeved on the outer periphery of the rod portion 230, the deformation cylinder portion 340 surrounds the threaded portion 210, and the inner diameter of the deformation cylinder portion 340 is greater than or equal to the maximum outer diameter of the threaded portion 210.

[0063] When the threaded connection assembly 100 fixes the assembled part to the assembled part, the rod part 230 and the connecting cylinder part 320 can be arranged in the assembled part, so that the head part 250 abuts against the assembled part. The threaded part 210 can be screwed with the assembled part, at this time, the elastic deformation cylinder part 340 surrounding the threaded part 210 is elastically deformed by the extrusion of the assembled part, thereby forming a buffer structure between the assembled part and the assembled part. Therefore, the existence of the buffer structure can absorb the vibration and noise generated at the assembled part, for example, the threaded fastener 20 can be deformed in the axial direction to absorb the vibration energy, which can effectively prevent the vibration and noise from being transmitted to the assembled part, thereby effectively reducing the vibration and noise of the entire system, so as to ensure the normal work of the electrical equipment installed with the threaded connection assembly 100.

[0064] In addition, the connecting cylinder part 320 sleeved on the outer periphery of the rod part 230 can also play a role in absorbing vibration and noise to a certain extent, therefore, the connecting cylinder part 320 can play a role in deforming and buffering in the radial direction of the threaded fastener 20, so as to prevent the vibration and noise generated at the assembled part from being transmitted to the threaded fastener 20. In summary, under the cooperation of the connecting cylinder part 320 and the above-mentioned buffer structure, the buffer and shock absorption in multiple directions of the assembled part can be realized, so as to improve the shock absorption effect.

[0065] In the present application, some terms are used in the specification and claims to refer to certain components. Those skilled in the art should understand that hardware manufacturers may use different names to refer to the same component. The specification and claims do not distinguish components by name difference, but by functional difference. As mentioned throughout the specification and claims, "including" is an open term, which should be interpreted as "including but not limited to"; "approximately" means that those skilled in the art can solve technical problems within a certain error range and basically achieve technical effects.

[0066] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inside" and the like indicate the orientation or positional relationship shown in the drawings, and are only simplified for the purpose of describing the present application, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the present application.

[0067] In this application, unless otherwise clearly specified or limited, the terms "mounting", "connection", "connecting", "fixed", and the like should be interpreted broadly. For example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, or internal connection of two elements, or only surface contact. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0068] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description 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 appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.

[0069] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0070] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not drive the essence of the corresponding technical solutions out of the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A threaded connection assembly, characterized in that, The threaded fastener comprises a threaded portion, a rod portion and a head portion arranged along an axis of the threaded fastener in sequence, and the rod portion is connected between the threaded portion and the head portion. The buffer sleeve comprises a connecting cylinder portion and a deformation cylinder portion connected with each other, the connecting cylinder portion is sleeved on an outer periphery of the rod portion, and the deformation cylinder portion surrounds the threaded portion, and an inner diameter of the deformation cylinder portion is greater than or equal to a maximum outer diameter of the threaded portion. A part of the threaded portion is accommodated in the deformation cylinder portion, and an end of the threaded portion protrudes away from one end of the connecting cylinder portion relative to the deformation cylinder portion.

2. A threaded connection assembly according to claim 1, characterized in that, An outer peripheral wall of the threaded portion and an inner wall of the deformation cylinder portion have a gap therebetween.

3. The threaded connection assembly of claim 1, wherein, The deformation cylinder portion is provided with deformation grooves penetrating through the outer wall and the inner wall of the deformation cylinder portion, and the deformation grooves extend along an axial direction of the threaded fastener.

4. The threaded connection assembly of claim 1, wherein, The deformation grooves are a plurality of deformation grooves arranged along a circumferential direction of the threaded fastener.

5. A threaded connection assembly as defined in claim 4, wherein, Each of the deformation grooves penetrates through the deformation cylinder portion away from the one end of the connecting cylinder portion. The connecting cylinder portion is in interference fit with the rod portion, and a maximum outer diameter of the rod portion is greater than a maximum outer diameter of the threaded portion.

6. The threaded connection assembly of claim 1, wherein, An outer diameter of the head portion is greater than an outer diameter of the rod portion.

7. A threaded connection assembly as defined in claim 1, wherein, The buffer sleeve further comprises a flange portion connected to the one end of the connecting cylinder portion away from the deformation cylinder portion, and an outer diameter of the flange portion is greater than an outer diameter of the connecting cylinder portion, and the flange portion is in contact with a side of the head portion facing the rod portion. The buffer sleeve is a silica gel buffer sleeve or a foamed cotton buffer sleeve.

8. The threaded connection assembly of claim 1, wherein, The threaded fastener comprises a threaded portion, a rod portion and a head portion arranged along an axis of the threaded fastener in sequence, and the rod portion is connected between the threaded portion and the head portion.

9. An electrical device, characterized by The buffer sleeve comprises a connecting cylinder portion and a deformation cylinder portion connected with each other, the connecting cylinder portion is sleeved on an outer periphery of the rod portion, and the deformation cylinder portion surrounds the threaded portion, and an inner diameter of the deformation cylinder portion is greater than or equal to a maximum outer diameter of the threaded portion. A part of the threaded portion is accommodated in the deformation cylinder portion, and an end of the threaded portion protrudes away from one end of the connecting cylinder portion relative to the deformation cylinder portion. An outer peripheral wall of the threaded portion and an inner wall of the deformation cylinder portion have a gap therebetween. The deformation cylinder portion is provided with deformation grooves penetrating through the outer wall and the inner wall of the deformation cylinder portion, and the deformation grooves extend along an axial direction of the threaded fastener.

10. The electrical device of claim 9, wherein, The deformation grooves are a plurality of deformation grooves arranged along a circumferential direction of the threaded fastener. Each of the deformation grooves penetrates through the deformation cylinder portion away from the one end of the connecting cylinder portion.

11. The electrical device of claim 10, wherein, The connecting cylinder portion is in interference fit with the rod portion, and a maximum outer diameter of the rod portion is greater than a maximum outer diameter of the threaded portion.

12. The electrical device of claim 11, wherein, An outer diameter of the head portion is greater than an outer diameter of the rod portion.

13. The electrical device of claim 10, wherein, The buffer sleeve further comprises a flange portion connected to the one end of the connecting cylinder portion away from the deformation cylinder portion, and an outer diameter of the flange portion is greater than an outer diameter of the connecting cylinder portion, and the flange portion is in contact with a side of the head portion facing the rod portion. The buffer sleeve is a silica gel buffer sleeve or a foamed cotton buffer sleeve. The threaded fastener comprises a threaded portion, a rod portion and a head portion arranged along an axis of the threaded fastener in sequence, and the rod portion is connected between the threaded portion and the head portion. The buffer sleeve comprises a connecting cylinder portion and a deformation cylinder portion connected with each other, the connecting cylinder portion is sleeved on an outer periphery of the rod portion, and the deformation cylinder portion surrounds the threaded portion, and an inner diameter of the deformation cylinder portion is greater than or equal to a maximum outer diameter of the threaded portion. A part of the threaded portion is accommodated in the deformation cylinder portion, and an end of the threaded portion protrudes away from one end of the connecting cylinder portion relative to the deformation cylinder portion. An outer peripheral wall of the threaded portion and an inner wall of the deformation cylinder portion have a gap therebetween. The deformation cylinder portion is provided with deformation grooves penetrating through the outer wall and the inner wall of the deformation cylinder portion, and the deformation grooves extend along an axial direction of the threaded fastener. The deformation grooves are a plurality of deformation grooves arranged along a circumferential direction of the threaded fastener. Each of the deformation grooves penetrates through the deformation cylinder portion away from the one end of the connecting cylinder portion. The connecting cylinder portion is in interference fit with the rod portion, and a maximum outer diameter of the rod portion is greater than a maximum outer diameter of the threaded portion. An outer diameter of the head portion is greater than an outer diameter of the rod portion. The buffer sleeve further comprises a flange portion connected to the one end of the connecting cylinder portion away from the deformation cylinder portion, and an outer diameter of the flange portion is greater than an outer diameter of the connecting cylinder portion, and the flange portion is in contact with a side of the head portion facing the rod portion. The buffer sleeve is a silica gel buffer sleeve or a foamed cotton buffer sleeve. The threaded fastener comprises a threaded portion, a rod portion and a head portion arranged along an axis of the threaded fastener in sequence, and the rod portion is connected between the threaded portion and the head portion. The buffer sleeve comprises a connecting cylinder portion and a deformation cylinder portion connected with each other, the connecting cylinder portion is sleeved on an outer periphery of the rod portion, and the deformation cylinder portion surrounds the threaded portion, and an inner diameter of the deformation cylinder portion is greater than or equal to a maximum outer diameter of the threaded portion. A part of the threaded portion is accommodated in the deformation cylinder portion, and an end of the threaded portion protrudes away from one end of the connecting cylinder portion relative to the deformation cylinder portion. An outer peripheral wall of the threaded portion and an inner wall of the deformation cylinder portion have a gap therebetween. The deformation cylinder portion is provided with deformation grooves penetrating through the outer wall and the inner wall of the deformation cylinder portion, and the deformation grooves extend along an axial direction of the threaded fastener. The deformation grooves are a plurality of deformation grooves arranged along a circumferential direction of the threaded fastener. Each of the deformation grooves penetrates through the deformation cylinder portion away from the one end of the connecting cylinder portion. The connecting cylinder portion is in interference fit with the rod portion, and a maximum outer diameter of the rod portion is greater than a maximum outer diameter of the threaded portion. An outer diameter of the head portion is greater than an outer diameter of the rod portion. The buffer sleeve further comprises a flange portion connected to the one end of the connecting cylinder portion away from the deformation cylinder portion, and an outer diameter of the flange portion is greater than an outer diameter of the connecting cylinder portion, and the flange portion is in contact with a side of the head portion facing the rod portion. The buffer sleeve is a silica gel buffer sleeve or a foamed cotton buffer sleeve.

14. The electrical device according to any one of claims 9 to 13, characterized in that The electrical module comprises a shell and a functional part arranged in the shell, the functional part comprising a fan or a motor; The shell is provided with a plurality of connecting through holes located around the shell; the support is provided with a plurality of threaded holes corresponding to the connecting through holes; The number of the threaded connection assemblies is multiple, and the multiple threaded connection assemblies are one-to-one correspondingly arranged in the connecting through holes and are in threaded connection with the corresponding threaded holes.

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