Blind hole pressing rivet fixing piece

Abstract

The utility model provides a blind hole pressing rivet fixing piece which comprises a column body and a riveting part. The shaft has an open end and a closed end to receive a screw from the open end. The riveting part is arranged on the peripheral face of the column body in a protruding mode and located between the open end and the closed end. Wherein a first distance is formed between the riveting part and the open end, a second distance is formed between the riveting part and the closed end, and both the first distance and the second distance are not equal to zero. The blind hole pressing rivet fixing piece achieves the effects of both the fixing effect and the use safety.

Description

Technical Field

[0001] The utility model relates to the technical field of hardware processing, in particular to a blind rivet fixing part with a convex structure on the relative side. Background Art

[0002] Common rivet fixing parts include blind rivet fixing parts and through-hole rivet fixing parts, which are often used for fixing between two plates. For example, rivet fixing parts are often used for riveting and fixing with sheet metal parts inside a product and then combining with a circuit board to achieve a fixed distance between the two. The bottom of the existing rivet fixing part is flat, and the bottom surface of the fixing part is usually flush with the end surface of the plate after riveting. For example, it is flush with the surface of the sheet metal part. Therefore, when the length of the screw used to lock the circuit board is greater than or equal to the thread length of the rivet fixing part, only a through-hole type rivet fixing part can be used.

[0003] However, in actual applications, metal debris will be generated during the tightening process of the through-hole rivet fixing part and the screw. In products with high safety requirements, such as in-vehicle chargers, the movement of metal debris inside the product may pose a risk of short circuit, affecting product safety.

[0004] Therefore, in order to take into account both the locking effect and prevent metal debris from scattering inside the product when the length of the screw is greater than or equal to the height of the rivet fixing part, it is necessary to design a new type of blind rivet fixing part. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a blind rivet fixing part to solve and improve the problems and disadvantages of the foregoing technology.

[0006] To achieve the foregoing purpose, the utility model provides a blind rivet fixing part, including a column body and a riveting part. The column body has an open end and a closed end to receive a screw from the open end. The riveting part protrudes from the outer peripheral surface of the column body and is located between the open end and the closed end. There is a first distance between the riveting part and the open end, and a second distance between the riveting part and the closed end, and both the first distance and the second distance are not equal to zero.

[0007] According to one embodiment of the utility model, the projection shape of the riveting part on a plane perpendicular to the long axis direction of the column body is one of the following, including: circular, polygonal, and serrated.

[0008] According to one embodiment of the utility model, it further includes a riveting groove, which is recessed on the outer peripheral surface of the column body and adjacent to one side of the riveting part facing the open end.

[0009] According to one embodiment of the utility model, the riveting groove is implemented as a continuous riveting groove or an intermittent riveting groove.

[0010] According to one embodiment of the present utility model, the outer diameter at the riveting groove is smaller than the outer diameters of the column body and the riveting portion.

[0011] According to one embodiment of the present utility model, the column body includes a first portion from the open end to the riveting portion, and a second portion from the riveting portion to the closed end.

[0012] According to one embodiment of the present utility model, the outer diameter of the first portion is greater than or equal to the outer diameter of the second portion.

[0013] According to one embodiment of the present utility model, threads are provided on the inner circumferential surface of the column body to correspondingly lock the screw.

[0014] According to one embodiment of the present utility model, the threads are at least distributed at the position on the inner circumferential surface corresponding to the riveting portion.

[0015] According to one embodiment of the present utility model, the column body has at least one inner diameter.

[0016] The blind hole press riveting fixing member of the present utility model can smoothly lock a screw with a length greater than or equal to the column body by making the column body for receiving the screw protrude from opposite sides of the riveting portion on the premise of adopting a blind hole type. And because it adopts a blind hole form with a closed end, it can also achieve the purpose of preventing the metal debris generated during the tightening of the screw from falling outside the fixing member, increasing the use safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A perspective view showing a blind hole press riveting fixing member according to an embodiment of the present utility model.

[0018] Figure 2 A side view showing a blind hole press riveting fixing member according to an embodiment of the present utility model.

[0019] Figure 3 A top view showing a blind hole press riveting fixing member according to an embodiment of the present utility model from the open end.

[0020] Figure 4 A top view showing a blind hole press riveting fixing member according to an embodiment of the present utility model from the closed end.

[0021] Figure 5 A sectional view showing a blind hole press riveting fixing member according to an embodiment of the present utility model.

[0022] Figure 6 A sectional schematic view showing the actual application of a blind hole press riveting fixing member according to an embodiment of the present utility model in combination with a plate.

[0023] Figures 7A to 7BA cross-sectional view of a blind rivet fixing member showing a first part and a second part of different lengths according to other embodiments of the present utility model.

[0024] Figures 8A to 8C A three-dimensional schematic view of a blind rivet fixing member according to other embodiments of the present utility model.

[0025] The reference numerals are as follows:

[0026] 1, 1a, 1b, 1c, 1d, 1e: Blind rivet fixing member

[0027] 10, 10a, 10b: Column body

[0028] 101, 101a, 101b: First part

[0029] 102, 102a, 102b: Second part

[0030] 11: Open end

[0031] 111: Opening

[0032] 12: Closed end

[0033] 13: Outer peripheral surface

[0034] 14: Inner peripheral surface

[0035] 141: Thread

[0036] 15: Accommodating space

[0037] 20, 20a, 20b, 20c, 20d: Riveting part

[0038] 30, 30e: Riveting groove

[0039] 40: Screw

[0040] 41: Head

[0041] 51: Riveting plate

[0042] 52: Bonding plate

[0043] D1, D2, D3, D4: Outer diameter

[0044] d: Inner diameter

[0045] L1, L1a, L1b: First length

[0046] L2, L2a, L2b: Second length

[0047] L3, L3a, L3b: Length

[0048] H: Spacing Detailed implementation manners

[0049] Some exemplary embodiments of the features and advantages of the present utility model will be described in detail in the following description. It should be understood that the present utility model can have various variations in different ways, all of which do not depart from the scope of the present utility model, and the descriptions and drawings therein are essentially for illustrative purposes and not for limiting the present utility model.

[0050] It should be noted that although terms such as "first" and "second" can be used to describe different components / devices / circuits, these components / devices / circuits should not be limited by these terms. These terms are only used to distinguish different components / devices / circuits. For example, the first component can be called the second component, and similarly, the second component can also be called the first component without departing from the scope of the embodiment.

[0051] The following will describe in detail some embodiments of the present utility model with reference to the accompanying drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments.

[0052] Please refer to Figures 1 to 6 , which respectively show a perspective view, a side view, a top view, a bottom view, a sectional view of the blind rivet fixing member according to an embodiment of the present utility model, and a sectional view of its application to a combined plate. The blind rivet fixing member 1 of the present utility model includes a column body 10 and a riveting portion 20. The column body 10 has an open end 11 and a closed end 12, and the riveting portion 20 protrudes from the outer peripheral surface 13 of the column body 10 and is located between the open end 11 and the closed end 12. The open end 11 of the column body 10 is provided with an opening 111, and the column body 10 has an internal space to receive and accommodate a screw 40 from the opening 111 of the open end 11. A thread 141 is provided on the inner peripheral surface 14 of the column body 10 to perform rotational locking with the screw 40. In addition, a riveting groove 30 is recessed on the outer peripheral surface 13 of the column body 10, adjacent to one side of the riveting portion 20 facing the open end 11.

[0053] The column body 10 is demarcated by the riveting portion 20, and includes a first portion 101 from the open end 11 to the riveting portion 20, and a second portion 102 from the riveting portion 20 to the closed end 12. The first portion 101 has a first length L1, the second portion 102 has a second length L2, and both the first length L1 and the second length L2 are not equal to zero. That is, the first distance between the riveting portion 20 and the open end 11 (equivalent to the first length L1) and the second distance between the riveting portion 20 and the closed end 12 (equivalent to the second length L2) are both not equal to zero. Accordingly, the first portion 101 and the second portion 102 will respectively protrude from opposite sides of the riveting portion 20. In addition, the first portion 101 of the column body 10 has an outer diameter D1, and the second portion 102 has an outer diameter D2. In one embodiment, the outer diameter D1 is greater than the outer diameter D2; in another embodiment, the outer diameter D1 is equal to the outer diameter D2. The dimensions of both can vary according to actual needs.

[0054] The riveting portion 20 has an outer diameter D4, and the riveting groove 30 has an outer diameter D3. The outer diameter D4 of the riveting portion 20 is greater than the outer diameter D1 of the first portion 101, the outer diameter D2 of the second portion 102, and the outer diameter D3 of the riveting groove 30. That is, the riveting portion 20 is the most protruding structure in the blind hole press riveting fastener 1. The outer diameter D3 of the riveting groove 30 is smaller than the outer diameter D1 of the first portion 101 and the outer diameter D4 of the riveting portion 20. That is, a structural step difference will be formed between the riveting groove 30 and the first portion 101. In addition, the outer diameter D3 of the riveting groove 30 can be greater than, equal to, or less than the outer diameter D2 of the second portion 102, which is not limited to what is shown in the drawings.

[0055] As Figure 6 shown, when the blind hole press riveting fastener 1 is riveted to the riveting plate 51, for example, a sheet metal part, the open end 11 passes through the opening in the riveting plate 51, and the combination between the riveting portion 20 and the riveting plate 51 is completed by applying pressure. Among them, the riveting portion 20 will be pressed into the riveting plate 51 and the surface facing the closed end 12 will be flush with the surface of the riveting plate 51. At the same time, the depression formed by the riveting groove 30 on the column body 10 will form a structural step difference bite with the riveting plate 51, increasing the fixing effect between the two. Then, the bonding plate 52, for example, a circuit board, is arranged at the open end 11, and the opening on the bonding plate 52 is aligned with the opening 111, so that the screw 40 can pass through the opening on the bonding plate 52 and the opening 111 and enter the column body 10 and be helically combined with the thread 141 on the inner circumferential surface 14. Finally, when the head 41 of the screw 40 abuts against the bonding plate 52, the operation of combining the riveting plate 51 and the bonding plate 52 by using the blind hole press riveting fastener 1 is completed.

[0056] In this case, the distance H between the riveting plate 51 and the bonding plate 52 is maintained by the first part 101 of the column body 10. In other words, the distance H between the riveting plate 51 and the bonding plate 52 can be changed by selecting the first length L1 of the first part 101.

[0057] In addition, particularly, different from the form in the prior art where the closed end of the blind riveting fastener is flush with the plate after riveting, in the present utility model, the second part 102 of the column body 10 protrudes from the surface of the riveting plate 51. Through this protruding design, on the one hand, when one end of the column body 10 is the closed end 12, the length L3 of its internal space can still be greater than the distance H between the riveting plate 51 and the bonding plate 52, so that the length of the screw 40 is no longer limited by the specific set distance between the riveting plate 51 and the bonding plate 52. In this way, it helps to increase the locking force of the screw 40. For example, the screw 40 can thus provide a locking range across the plate thickness at the position corresponding to the riveting plate 51. On the other hand, because one end of the column body 10 is the closed end 12, even during the process of screwing and locking, the metal debris generated due to the tightening between the screw 40 and the thread 141 can remain in the accommodating space 15 and will not fall outside the column body 10, avoiding the problem that the metal debris may fall into the product and affect the safety of the product. It should be noted that the accommodating space 15 can be implemented in any shape, not limited to those shown in the drawings. Even without the accommodating space 15, the metal debris will still remain in the column body 10.

[0058] Next, please refer to Figure 5 and Figures 7A to 7B . Figure 7A and Figure 7B respectively show cross-sectional views of blind riveting fasteners with different lengths of the first part and the second part according to other embodiments of the present utility model. In Figure 7A the shown embodiment, the blind riveting fastener 1a includes a column body 10a and a riveting part 20a. The first part 101a of the column body 10a has a first length L1a and the second part 102a has a second length L1a, and the length L3a of the internal space of the column body 10a; and in Figure 7BIn the illustrated embodiment, the blind rivet fixing member 1b includes a column body 10b and a riveting portion 20b. The first part 101b of the column body 10b has a first length L1b and the second part 102b has a second length L1b, and the length of the internal space of the column body 10b is L3b. By comparing these figures, it can be seen that the lengths L3, L3a, L3b of the internal spaces of the column bodies 10, 10a, 10b, the lengths L1, L1a, L1b of the first parts 101, 101a, 101b, the lengths L2, L2a, L2b of the second parts 102, 102a, 102b, and the positions of the riveting portions 20, 20a, 20b, etc. can all be changed according to different actual implementation situations. For example, when the lengths L1, L1a, L1b of the first parts 101, 101a, 101b are implemented to be the same, and the lengths L2, L2a, L2b of the second parts 102, 102a, 102b are implemented to be different, different locking effects can be provided at the same plate spacing in this way; or, when the lengths L1, L1a, L1b of the first parts 101, 101a, 101b are implemented to be different, and the lengths L2, L2a, L2b of the second parts 102, 102a, 102b are implemented to be different, in addition to being able to be based on different plate spacings, different locking effects can also be provided for each application situation; or, when the lengths of the column bodies 10, 10a, 10b are implemented to be the same, the lengths L1, L1a, L1b of the first parts 101, 101a, 101b and the lengths L2, L2a, L2b of the second parts 102, 102a, 102b of each blind rivet fixing member 1, 1a, 1b can be changed by changing the setting positions of the riveting portions 20, 20a, 20b. In this way, it can be applied to the application requirements of different setting spacings between plates within the same height space. Therefore, there can be various changes according to the actual implementation situation, and it is not limited by what is shown in the figures.

[0059] Please refer again to Figure 1 and Figures 8A to 8C . Figures 8A to 8C A three-dimensional schematic diagram showing a blind rivet fixing member according to other embodiments of the present invention. In addition to the lengths of the first part and the second part of the column body being variable, other components of the blind rivet fixing of the present invention can also be changed according to different actual requirements. For example, in some embodiments, the projected shape of the riveting portion 20 in a plane perpendicular to the long axis of the column body can be changed. For example, as Figure 1 shown, the shape of the riveting portion 20 is implemented as a polygon, or, as Figure 8A shown, the riveting portion 20c of the blind rivet fixing 1c is implemented as a circle, or, as Figure 8BAs shown, the riveting portion 20d of the blind rivet press-fitting fixture 1d is implemented as serrated. Alternatively, the riveting portion can also be implemented in other shapes, as long as it can provide appropriate bonding force when riveting with the plate, without limitation. Furthermore, in some embodiments, the structure of the riveting groove can vary. For example, as Figure 1 shown, the riveting groove 30 presents a continuous through-groove form. Alternatively, as Figure 8C shown, the riveting groove 30e of the blind rivet press-fitting fixture 1e is implemented as a discontinuous form. Alternatively, the riveting groove can also be implemented in other suitable forms, as long as it can provide appropriate bonding force when riveting with the plate, without limitation. Therefore, the shapes and structures of the riveting portion and the riveting groove can have various implementation options, not limited to the examples and drawings shown above.

[0060] In addition, in other embodiments, the thread 141 can be implemented as being provided only on a part of the inner circumferential surface 14. For example, the thread 141 can be distributed on the inner circumferential surface 14 close to the open end 11 and the closed end 12, and the two sections of the thread are smooth surfaces in between; or the thread 141 can also be distributed only on the inner circumferential surface 14 corresponding to the riveting portion 20, and the rest is a smooth surface. Therefore, the distribution position of the thread 141 can be changed according to different locking requirements, with various possibilities, not limited to the drawings shown. Of course, the thread distribution on the screw 40 also changes correspondingly to ensure the locking effect.

[0061] In addition, in other embodiments, the inner diameter d of the column body 10 can be implemented in more than one type. That is, the column body 10 can have multiple inner diameters. For example, the inner diameter can be larger near the open end 11 and smaller near the closed end 12, or the inner diameters near the open end 11 and the closed end 12 can be smaller and the inner diameter of the middle section can be larger. It can also be changed according to the actual implementation requirements, all within the scope of the present utility model.

[0062] In summary, the blind rivet press-fitting fixture of the present utility model generally makes the column body protrude from opposite sides of the riveting portion, thereby improving the limitation in the prior art that only through-hole type press-riveting fixtures can be used when the length of the screw is greater than or equal to the column body, and providing an effective solution in the form of a blind hole. And, on the premise that the blind hole type press-riveting fixture has a closed end, it also further improves the defect that when using the through-hole type, safety problems may be caused by the falling of metal chips generated during the tightening process. Therefore, the blind rivet press-fitting fixture of the present utility model effectively balances the achievement of the fixing effect and the use safety.

[0063] It should be noted that the above are only preferred embodiments proposed to illustrate the present utility model. The present utility model is not limited to the described embodiments. The scope of the present utility model is determined by the appended claims. And the present utility model can be variously modified by those skilled in the art, but all do not depart from what is intended to be protected by the appended claims.

Claims

1. A blind hole riveting fixture, characterized in that: Include: a column having an open end and a closed end for receiving a screw from the open end; and A riveting portion is protrudingly disposed on the outer peripheral surface of the column body and is located between the open end and the closed end. There is a first distance between the riveted portion and the open end, there is a second distance between the riveted portion and the closed end, and both the first distance and the second distance are not equal to zero.

2. The blind hole riveting fixture according to claim 1, characterized in that: The projection shape of the riveting portion on a plane perpendicular to the long axis direction of the column body is one of the following, including: a circle, a polygon and a sawtooth.

3. The blind hole riveting fixture according to claim 1, characterized in that: It also comprises a riveting groove which is concavely arranged on the outer peripheral surface of the column body and adjacent to the side of the riveting portion facing the opening end.

4. The blind hole riveting fixture according to claim 3, characterized in that: The riveting groove is implemented as a continuous riveting groove or a discontinuous riveting groove.

5. The blind hole riveting fixture according to claim 3, characterized in that: The outer diameter of the riveting groove is smaller than the outer diameter of the column body and the outer diameter of the riveting portion.

6. The blind hole riveting fixture according to claim 1, characterized in that: The column body includes a first portion from the open end to the riveted portion, and a second portion from the riveted portion to the closed end.

7. The blind hole riveting fixture according to claim 6, characterized in that: The outer diameter of the first part is greater than or equal to the outer diameter of the second part.

8. The blind hole riveting fixture according to claim 1, characterized in that: The inner circumference of the column body is provided with threads to correspondingly lock the screw.

9. The blind hole self-riveting fastener according to claim 8, characterized in that: The thread is at least distributed on a position of the inner circumferential surface corresponding to the riveted portion.

10. The blind hole self-riveting fastener according to claim 1, characterized in that: The shaft has at least one inner diameter.

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