Fixing structure

Abstract

The utility model provides a fixing structure which comprises a base, a base plate and a connecting piece, the base comprises a first surface and a second surface which are oppositely arranged, a first connecting hole is formed in the first surface and the second surface in a penetrating mode, and a protruding part is arranged on the first surface on the periphery of the first connecting hole; the base plate is detachably arranged on the base, the base plate is provided with a second connecting hole corresponding to the first connecting hole, and the protruding part can abut against the portion, around the second connecting hole, of the base plate; the connecting piece comprises an end part and a connecting part which are connected with each other, the connecting part extends into the first connecting hole through the second connecting hole, the end part is located on the side, away from the base, of the base plate, under the action of external force, the end part and the protruding part extrude each other, and the part, around the second connecting hole, of the base plate can deform, extend towards the connecting part and clamp the connecting part. According to the fixing structure, the substrate and the connecting piece are connected without a clamping ring, operation is easy, connection is stable, and reliability is high.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of connection and fixing of mechanical structures, and particularly to a fixing structure. BACKGROUND

[0002] The heat dissipation fin is usually installed on the heat sink by screws. Before installation, the heat dissipation fin and the matching screws need to be transported and stored. At present, the heat dissipation fin and the matching screws are mostly packaged independently, but the screws are easy to be lost. In order to prevent the loss of screws, the screws can be pre-installed on the heat dissipation fin, but a snap ring needs to be used for fixing to prevent the screws from accidentally falling off the heat dissipation fin.

[0003] However, the pre-fixing of the screws by the snap ring increases the part of the snap ring and increases the cost. In addition, the operation is tedious by manual operation according to the snap ring. In addition, the fixing by the snap ring also has the risk of accidental falling of the snap ring, and the reliability is low. CONTENT OF THE INVENTION

[0004] In order to solve at least one of the above defects, it is necessary to provide a fixing structure.

[0005] The fixing structure provided by the embodiment of the present application comprises a base, a base plate and a connecting piece. The base comprises a first surface and a second surface arranged oppositely, a first connecting hole is formed through the first surface and the second surface, and a protruding portion is arranged on the first surface around the first connecting hole. The base plate is detachably arranged on the base, the base plate is provided with a second connecting hole corresponding to the first connecting hole, and the protruding portion can abut against the base plate around the second connecting hole. The connecting piece comprises an end portion and a connecting portion connected to each other, the connecting portion extends into the first connecting hole through the second connecting hole, and the end portion is located on the side of the base plate away from the base. Under the action of an external force, the end portion and the protruding portion are pressed against each other, the base plate around the second connecting hole is deformable and extends towards the connecting portion and clamps the connecting portion.

[0006] In some possible embodiments, the first surface around the first connecting hole is provided with a continuous protruding portion, or the first surface around the connecting groove is provided with a plurality of spaced protruding portions.

[0007] In some possible embodiments, along the thickness direction of the base, the height of the protruding portion is L1, the thickness of the base plate around the second connecting hole is L2, and L1=1 / 4L2~1 / 3L2.

[0008] In some possible embodiments, the connecting portion comprises a first part and a second part connected to each other, the first part is connected with the end portion, the outer diameter of the first part is smaller than the outer diameter of the second part and the end portion, a clamping groove is formed among the end portion, the first part and the second part, and under the mutual extrusion of the end portion and the protruding portion, the substrate around the second connecting hole can extend towards the connecting portion and into the clamping groove.

[0009] In some possible embodiments, the inner diameter of the second connecting hole is 1.05 to 1.1 times the outer diameter of the first part.

[0010] In some possible embodiments, along the thickness direction of the substrate, the size of the first part is greater than the thickness of the substrate at the periphery of the first connecting hole.

[0011] In some possible embodiments, the material of the substrate is a flexible metal.

[0012] In some possible embodiments, the flexible metal is aluminum.

[0013] In some possible embodiments, the fixing structure further comprises a pressing piece on the side of the substrate away from the base.

[0014] In some possible embodiments, the pressing piece is provided with a pressing block close to the surface of the substrate, and the pressing block can press on the end portion.

[0015] The fixing structure provided by the embodiments of the present application can deform the substrate around the second connecting hole and extend towards the connecting portion side under the mutual extrusion of the protruding portion and the end portion of the connecting piece under the action of external force, so as to reduce the hole diameter of the second connecting hole, hold the connecting piece, and realize the stable connection of the substrate and the connecting piece. The fixing structure does not need to additionally install a clamping ring part, saves cost, and is simple to operate, and the connection reliability of the substrate and the connecting piece is high. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0017] Figure 1 FIG. 1 is a structural schematic diagram of the fixing structure in the embodiments of the present application.

[0018] Figure 2 FIG. 2 is an exploded view of the fixing structure in the embodiments of the present application. Figure 1 FIG. 3 is a schematic diagram of the fixing structure in the embodiments of the present application.

[0019] Figure 3 Fig. 2 is a partial cross-sectional view of the substrate along the line III-III in Fig. 1, and the lower pressing member does not press the connecting member. Figure 1

[0020] Figure 4 Fig. 3 is a partial cross-sectional view of the connecting member for deforming the substrate and connecting the substrate to the base by applying pressure to the connecting member. Figure 3

[0021] Figure 5 Fig. 4 is an enlarged view of the B portion in Fig. 3. Figure 2

[0022] Figure 6 Fig. 5 is a partial cross-sectional view of the base along the line A-A in Fig. 4.

[0023] Figure 7 Fig. 6 is a partial cross-sectional view of the substrate along the line A-A in Fig. 5. Figure 2

[0024] Figure 8 Fig. 7 is a partial cross-sectional view of the substrate along the line A-A in Fig. 6. Figure 2

[0025] Figure 9 Fig. 8 is a partial cross-sectional view of the connecting member along the line A-A in Fig. 7. Figure 2

[0026] Figure 10 Fig. 9 is a partial cross-sectional view of the lower pressing member along the line A-A in Fig. 8. Figure 2

[0027] Main element symbol explanation

[0028]

[0029] The following detailed description will further describe the present application with reference to the above-described drawings. DETAILED DESCRIPTION

[0030] Embodiments of the present application are described in detail below with reference to the attached drawings, wherein the same or like reference numerals and signs in the drawings represent the same or like elements or elements having the same or similar functions. The embodiments described below are examples for explaining the present application, and should not be understood as limiting the present application.

[0031] ​​​​​​​In the description of the application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship shown in the drawings, and are for the purpose of facilitating the description of the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0032] In the description of the application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected or can communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0033] The following disclosure provides many different embodiments or examples for implementing different structures of the application. In order to simplify the disclosure of the application, the components and arrangements of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the application. In addition, the application can repeatedly refer to numbers and / or letters in different examples, and such repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or arrangements discussed. In addition, the application provides various specific examples of processes and materials, but those skilled in the art can realize the application of other processes and / or the use of other materials.

[0034] Please refer to Figures 1 to 4The embodiment of the application provides a fixing structure 100, which comprises a base 10, a base plate 20 and a connecting piece 30. The base 10 comprises oppositely arranged first and second surfaces 11 and 12, a first connecting hole 13 is formed through the first and second surfaces 11 and 12, and the first surface 11 around the periphery of the first connecting hole 13 is provided with a protruding part 14. The base plate 20 is detachably arranged on the base 10, the base plate 20 is provided with a second connecting hole 21 corresponding to the first connecting hole 13, and the protruding part 14 can abut against the base plate 20 around the second connecting hole 21. The connecting piece 30 comprises an end part 31 and a connecting part 32 connected with each other. The connecting part 32 extends into the first connecting hole 13 through the second connecting hole 21, and the end part 31 is located on the side, away from the base 10, of the base plate 20. Under the action of external force, the end part 31 and the protruding part 14 are extruded with each other, the base plate 20 around the second connecting hole 21 can be deformed and extend towards the connecting part 32 and hold the connecting part 32, so that the connecting piece 30 is fixed in the second connecting hole 21, thereby realizing the connection and fixation of the base plate 20 and the connecting piece 30 and reducing the risk of accidental falling of the connecting piece 30 from the base plate 20.

[0035] Please refer to Figure 5 The first surface 11 around the periphery of the first connecting hole 13 is provided with a continuous protruding part 14. By arranging a continuous protruding part 14, the extrusion force applied to the base plate 20 can be more uniform, so that the base plate 20 is uniformly deformed and extends towards the connecting part 32, the aperture of the second connecting hole 21 is reduced, the periphery of the connecting part 32 is held, and the connection between the base plate 20 and the connecting piece 30 is more stable. It can be understood that, in combination with Figure 6 In other embodiments, in the base 10a, the first surface 11 around the periphery of the first connecting hole 13 is provided with a plurality of spaced protruding parts 14a, the deformation of the local base plate 20 can be realized, the aperture of the second connecting hole 21 can be reduced, the connecting piece 30 can be held in the second connecting hole 21 of the base plate 20, and the spaced protruding parts 14a can reduce the damage to the base plate 20 and further reduce the risk of damage to the base plate 20.

[0036] Please refer to Figure 7 The protruding part 14 comprises a chamfer 15 formed on the side close to the first connecting hole 13, for example, a C corner. By arranging the chamfer 15 on the side of the protruding part 14 close to the first connecting hole 13, the deformation effect of the base plate 20 can be further improved, the fixing effect of the connecting piece 30 is improved, the pressure distribution can be optimized, the direct pressure on the base plate 20 is reduced, the risk of damaging the base plate 20 is reduced, and the long-term reliability of the base plate 20 is improved.

[0037] Please refer again to Figure 3 With Figure 4 , along the thickness direction X of the base 10, the height of the protruding part 14 is L1, the thickness of the substrate 20 around the second connecting hole 21 is L2, L1 = 1 / 4L2 ~ 1 / 3L2. Since the height of the protruding part 14 has an influence on the deformation degree of the substrate 20, by limiting the height of the protruding part 14 within the above range, it is beneficial to further control the deformation amount of the substrate 20, so that the range of the inner diameter reduction of the second connecting hole 21 can be controlled, so as to better hold the connecting piece 30, thereby facilitating to improve the fixing effect and reduce the risk of falling off. At the same time, controlling the height of the protruding part 14 is also beneficial to reduce the extrusion damage to the substrate 20, and improve the stability and reliability of the connection between the substrate 20 and the base 10. For example, the height L1 of the protruding part 14 can be 1 / 4L2, 1 / 3L2, etc., which is designed according to the actual thickness of the substrate 20.

[0038] The material of the base 10 can be a hard material such as hard plastic or hard metal. The first connecting hole 13 is mainly used for temporarily accommodating the connecting part 32, and plays the role of avoiding the empty position, so in other embodiments, when the thickness of the base 10 is relatively thick, the first connecting hole 13 penetrating through the first surface 11 and the second surface 12 can not be provided on the base 10, but a connecting groove (not shown in the figure) is formed by the first surface 11 being recessed towards the second surface 12, which can also achieve the purpose of temporarily accommodating the connecting part 32.

[0039] Please refer to Figure 8 , the material of the substrate 20 can be flexible metal, which can deform when subjected to external force, so that the hole diameter of the second connecting hole 21 is reduced, and the deformed protruding part of the substrate 20 can hold the connecting piece 30, realizing the stable connection between the substrate 20 and the connecting piece 30.

[0040] The substrate 20 includes a third surface 22 and a fourth surface 23 arranged opposite to each other, and the second connecting hole 21 penetrates through the third surface 22 and the fourth surface 23. The second connecting hole 21 is a stepped hole including a first hole 24 and a second hole 25 connected to each other, wherein the second hole 25 is arranged close to the first connecting hole 13, the hole diameter of the second hole 25 is smaller than that of the first hole 24, and a step 26 is formed between the second hole 25 and the first hole 24. When the connecting piece 30 is inserted into the first connecting hole 13, the end part 31 abuts against the step 26. At this time, the protruding part 14 abuts against the substrate 20 corresponding to the step 26, and the thickness L2 of the substrate 20 is also the thickness of the substrate 20 corresponding to the second hole 25. In this way, the thickness of the part of the substrate 20 extruded between the protruding part 14 and the end part 31 is thin, which is beneficial to extrusion deformation. In some embodiments, the substrate 20 can be a heat dissipation metal plate.

[0041] In some embodiments, the substrate 20 can be made of aluminum, such as aluminum of model Al6063, which has good ductility, is easy to be extruded and processed, and is not easy to be broken after being extruded and deformed.

[0042] Please refer to Figure 9 The connecting part 32 of the connecting member 30 comprises a first part 33 and a second part 34 connected to each other, and the first part 33 is connected to the end part 31. The outer diameter of the first part 33 is smaller than the outer diameters of the second part 34 and the end part 31, so as to form a stepped connecting structure. A clamping groove 35 is formed between the end part 31, the first part 33 and the second part 34. Under the extrusion of the end part 31 and the protruding part 14, the substrate 20 around the second connecting hole 21 can extend towards the connecting part 32 and enter the clamping groove 35, so as to clamp the connecting member 30 and prevent the connecting member 30 from falling off the second connecting hole 21 of the substrate 20.

[0043] The inner diameter D1 of the second connecting hole 21 can be 1.05 to 1.1 times the outer diameter D2 of the first part 33, i.e. there is a gap between the inner wall of the second connecting hole 21 and the first part 33, and the width of the gap is (0.05-0.1) times the outer diameter D2 of the first part 33. Under the extrusion of the protruding part 14, the substrate 20 is deformed and the inner diameter D1 of the second connecting hole 21 is reduced, and the deformed part of the substrate 20 can enter the gap between the inner wall of the second connecting hole 21 and the first part 33, so as to fix the connecting member 30. In addition, after the connecting member 30 is installed on the substrate 20, the outer diameter of the first part 33 of the connecting member 30 is smaller than the inner diameter of the second connecting hole 21, which is beneficial to the connecting member 30 in a loose but not falling off state in the radial direction of the second connecting hole 21. The connecting member 30 can be further adjusted in the subsequent process of installing the substrate 20 on other structures, so as to ensure accurate positioning and improve the flexibility and convenience of the substrate 20 installation operation.

[0044] In some embodiments, along the thickness direction X of the substrate 20, the height of the first part 33 is greater than the thickness of the substrate 20 around the periphery of the second connecting hole 21. Specifically, the height of the first part 33 is greater than the thickness of the substrate 20 corresponding to the second hole 25, i.e. along the thickness direction X of the substrate 20, the length of the clamping groove 35 is greater than the thickness of the substrate 20 corresponding to the second hole 25. In this way, after the connecting member 30 is installed on the substrate 20, the connecting member 30 is in a loose but not falling off state in the thickness direction X in the second connecting hole 21. The connecting member 30 can be further adjusted in the subsequent process of installing the substrate 20 on other structures, so as to ensure accurate positioning and further improve the flexibility and convenience of the substrate 20 installation operation.

[0045] Please refer toFigure 10 The fixing structure 100 further comprises a pressing member 40 arranged on the side of the base plate 20 away from the base 10. The pressing member 40 is detachably connected to the base 10, and the pressing member 40 can abut against the end portion 31 of the connecting member 30 to apply an external force to the end portion 31, and further apply an external force to the base plate 20 to realize the extrusion deformation of the base plate 20.

[0046] In some embodiments, the pressing member 40 is provided with a pressing block 41 corresponding to the end portion 31. When the pressing member 40 is installed on the base 10, the pressing block 41 can abut against the end portion 31 of the connecting member 30 to apply an external force to the end portion 31. Under the mutual extrusion of the end portion 31 and the protruding portion 14, the flexible base plate 20 can be deformed, the inner diameter of the second connecting hole 21 can be reduced, and the fixing of the connecting member 30 on the base plate 20 can be realized.

[0047] The specific assembly process is as follows: as shown in Figure 3 First, the base plate 20 is placed on the base 10, the first connecting hole 13 is aligned with the second connecting hole 21, the connecting member 30 is installed in the first connecting hole 13 from the second connecting hole 21 for pre-assembly.

[0048] Then, as shown in Figure 4 The pressing member 40 is installed on the base 10, the pressing block 41 abuts against the end portion 31 of the connecting member 30 to apply an external force to the end portion 31. Under the action of the end portion 31 and the protruding portion 14, the base plate 20 is extruded and deformed and extends towards the first portion 33, the inner diameter of the second connecting hole 21 is reduced, the connecting member 30 is clamped in the second connecting hole 21 with reduced inner diameter and cannot be pulled out of the second connecting hole 21, so that the connecting member 30 is connected to the base plate 20.

[0049] Then, the pressing member 40 can be detached from the base 10, and the base plate 20 connected with the connecting member 30 can be removed from the base 10, so that the stable connection between the base plate 20 and the connecting member 30 can be realized to prevent the connecting member 30 from being accidentally pulled off the base plate 20 during transportation and storage.

[0050] When it is needed to install the base plate 20 on a required mounting structure (not shown in the figure, for example, when the base plate 20 is a heat dissipation plate, the mounting structure can be a heat sink), the base plate 20 is placed on the mounting structure, the connecting member 30 is aligned with the connecting hole of the mounting structure, and the connecting member 30 is further tightened and fixed in the connecting hole of the mounting structure to realize the fixing of the base plate 20 on the mounting structure.

[0051] The fixing structure 100 provided by the embodiment of the present application is provided with the protruding part 14 on the periphery of the first connecting hole 13 of the base 10, and under the action of external force, the protruding part 14 and the end part 31 of the connecting piece 30 extrude each other, so that the substrate 20 on the periphery of the second connecting hole 21 is deformed and extends towards the connecting part 32 side, thereby reducing the aperture of the second connecting hole 21, clamping the connecting piece 30, and realizing the stable connection of the substrate 20 and the connecting piece 30. The connecting mode of the substrate 20 and the connecting piece 30 does not need to additionally install the clamping ring part, saves the cost, and is simple to operate, and the connection reliability of the substrate 20 and the connecting piece 30 is high.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not limited. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. A fixing structure characterized by comprising: The utility model relates to a base, a base plate and a connecting piece, and belongs to the technical field of connecting pieces. The base comprises oppositely arranged first and second surfaces, and a first connecting hole is formed through the first and second surfaces, and the first surface around the first connecting hole is provided with a protruding part; The base plate is detachably arranged on the base, and the base plate is provided with a second connecting hole corresponding to the first connecting hole, and the protruding part can abut against the base plate around the second connecting hole; and The connecting piece comprises a connecting part and an end part connected to each other, the connecting part extends into the first connecting hole through the second connecting hole, and the end part is located on the side of the base plate away from the base, and under the mutual extrusion of the end part and the protruding part, the base plate around the second connecting hole can be deformed and extend towards the connecting part and hold the connecting part.

2. The fixing structure according to claim 1, characterized in that, The first surface around the first connecting hole is provided with a continuous protruding part, or the first surface around the first connecting hole is provided with a plurality of spaced protruding parts.

3. The fixing structure according to claim 1, characterized by In the thickness direction of the base, the height of the protruding part is L1, and the thickness of the base plate around the second connecting hole is L2, and L1=1 / 4L2~1 / 3L2.

4. The fixture of claim 1, wherein The connecting part comprises a first part and a second part connected to each other, the first part is connected to the end part, the outer diameter of the first part is smaller than the outer diameters of the second part and the end part, a clamping groove is formed between the end part, the first part and the second part, and under the mutual extrusion of the end part and the protruding part, the base plate around the second connecting hole can extend towards the connecting part and into the clamping groove.

5. The fixture of claim 4, wherein The inner diameter of the second connecting hole is 1.05 times to 1.1 times the outer diameter of the first part.

6. The fixture of claim 4, wherein In the thickness direction of the base plate, the size of the first part is larger than the thickness of the base plate around the first connecting hole.

7. The fixture of claim 1, wherein The base plate is made of flexible metal.

8. The fixture of claim 7, wherein The flexible metal is aluminum.

9. The fixture of claim 1, wherein The utility model further comprises a pressing piece located on the side of the base plate away from the base.

10. The fixture of claim 9, wherein The pressing piece is provided with a pressing block close to the surface of the base plate, and the pressing block can abut against the end part.

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