Sheet pressing rivet bushing

Abstract

The invention relates to a riveting piece, in particular to a thin plate pressing rivet bushing which comprises a body, a first pressing rivet and a second pressing rivet, the body is arranged to be in an annular shape extending in the axial direction, and the body is provided with a first face and a second face which are oppositely arranged in the axial direction; the riveting part is connected to the first surface of the body, the outer diameter of the riveting part is smaller than that of the body, so that the riveting part and the body form a step-shaped structure, and the outer diameter of the riveting part is smaller than the inner diameter of the mounting hole; wherein a sawtooth part is arranged on the peripheral annular wall of the riveting part, a gap is formed between the sawtooth part and the body, and the gap is used for containing at least part of the deformed mounting plate. By means of the structure, the sawtooth part used for extruding the mounting plate can be arranged on the periphery of the riveting part, machining is easy, and the sunken condition of the riveted plate can be avoided.

Description

Technical Field

[0001] The invention relates to a riveted part, in particular to a thin plate pressure riveted bushing. Background Art

[0002] The description in this section merely provides background information related to the present disclosure and does not constitute prior art.

[0003] The self-riveted bushing is a riveted structure connected to the mounting plate, which is generally arranged in a ring shape. After riveting, the hollow bushing structure can be tightly combined with the mounting plate to facilitate expanding the structural function of the mounting plate.

[0004] In the process of riveting the existing self-riveting bushing with the mounting plate, the self-riveting bushing generally adopts the riveting process, that is, the self-riveting bushing needs to provide a part of the oblique force other than the radial force to squeeze the mounting plate, and use the structure of the flanged part to squeeze part of the metal body of the mounting plate into the preset groove to achieve the connection. The disadvantage is that the mounting plate after installation is subjected to the force of riveting, or the mounting plate needs to be processed to cut out the melting groove for accommodating the metal body of the mounting plate, which reduces the structural strength of the mounting plate and may have a large dent, affecting the quality of the finished product. For thin plates with lower strength, the above-mentioned dent effect is further amplified.

[0005] It should be noted that the above introduction to the technical background is only for the convenience of providing a clear and complete description of the technical solutions of the present invention and for the convenience of understanding by those skilled in the art. It cannot be considered that the above technical solutions are well known to those skilled in the art simply because these solutions are described in the background technology section of the present invention. Summary of the invention

[0006] The purpose of the present invention is to provide a thin plate riveted bushing, which can be easily processed by arranging a serrated portion for extruding a mounting plate on the periphery of the riveted portion, and can avoid the concavity of the plate after riveting.

[0007] In order to achieve the above-mentioned object, the present invention discloses the following thin plate riveting bushing, which is used to be connected with a mounting plate, wherein the mounting plate has a mounting hole; the thin plate riveting bushing comprises:

[0008] A body, the body is arranged in a ring shape extending in the axial direction, and the body has a first surface and a second surface arranged opposite to each other in the axial direction;

[0009] A riveted portion, the riveted portion is connected to the first surface of the main body, the outer diameter of the riveted portion is smaller than the outer diameter of the main body, so that the riveted portion and the main body form a step-shaped structure, and the outer diameter of the riveted portion is smaller than the inner diameter of the mounting hole;

[0010] Wherein, the outer ring wall of the riveted portion is provided with a serration portion, and a gap is provided between the serration portion and the body, and the gap is used to accommodate at least a part of the mounting plate after deformation.

[0011] Furthermore, the serration portion includes a plurality of serrations spaced apart around a peripheral annular wall of the riveted portion.

[0012] Furthermore, a side of the end of each saw tooth facing away from the body has an inclined surface inclined toward the body.

[0013] Furthermore, a dimension of the riveted portion along the axial direction is the same as a dimension of the mounting plate along the axial direction.

[0014] Furthermore, the main body and the riveted portion are configured as an integrally formed structure, and the inner annular wall of the main body and the inner annular wall of the riveted portion are configured as the same connected annular surface.

[0015] A connection structure is also disclosed, which includes the above-mentioned mounting plate and thin plate riveted bushing, wherein the mounting plate and the thin plate riveted bushing are riveted together, and the serrated portion is inserted into the inner hole wall of the mounting hole, and at least part of the mounting plate is arranged in the gap between the serrated portion and the main body.

[0016] Also disclosed is a riveting device for riveting the above-mentioned mounting plate and the thin plate riveting bushing, wherein the riveting device includes an upper mold corresponding to one side of the riveted part and a lower mold corresponding to one side of the main body, wherein the side of the upper mold facing the riveted part is set as a plane, and the radial dimension of the upper mold is not less than the aperture of the mounting hole.

[0017] By means of the above technical solution, the beneficial effects of the present invention are as follows:

[0018] The thin plate riveting bushing of the present invention can be provided with a serrated portion for squeezing the mounting plate on the periphery of the riveted portion. During the riveting process, the riveted portion can be pressed down only by a mold on a plane, so that at least a portion of the mounting plate is pressed into the serrated portion on the periphery of the riveted portion to achieve the riveting effect. Compared with the existing flip riveting process, since the riveted portion does not need to be bent, the entire riveting process is smoother and easier, and the mounting plate after riveting does not have the concavity of the mounting plate in the flip riveting process, and is suitable for processing thinner plates.

[0019] To further understand the features and technical contents of the present invention, please refer to the following detailed description and drawings of the present invention. However, the drawings provided are only for reference and description and are not intended to limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of this specification or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this specification. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0021] Figure 1 is a cross-sectional view of a thin plate riveted bushing provided in an embodiment of this specification;

[0022] Figure 2 It is a top view of a thin plate riveted bushing provided in an embodiment of this specification;

[0023] Figure 3 This is a riveting diagram of a thin plate riveted bushing provided in an embodiment of this specification;

[0024] Figure 4 This is a schematic diagram of a use scenario of a thin plate riveted bushing provided in an embodiment of this specification;

[0025] In the figure: 100, mounting plate; 200, connecting plate; 1, main body; 2, riveting part; 3, serrated part; 31, inclined surface; 4, gap; 5, upper mold; 6, lower mold; 61, groove. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below in conjunction with the drawings in the embodiments of this specification. Obviously, the described embodiments are only part of the embodiments of this specification, not all of the embodiments. Based on the embodiments in this specification, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of this specification.

[0027] The following is an explanation of the embodiments of the present invention through specific embodiments. Those skilled in the art can understand the advantages and effects of the present invention from the contents disclosed in this specification. The present invention can be implemented or applied through other different specific embodiments, and the details in this specification can also be modified and changed in various ways based on different viewpoints and applications without departing from the concept of the present invention. In addition, the drawings of the present invention are only simple schematic illustrations and are not depicted according to actual sizes. It is stated in advance. The following embodiments will further explain the relevant technical contents of the present invention in detail, but the disclosed contents are not intended to limit the scope of protection of the present invention.

[0028] It should be understood that, although the terms "first", "second", "third", etc. may be used herein to describe various components or signals, these components or signals should not be limited by these terms. These terms are mainly used to distinguish one component from another component, or one signal from another signal. In addition, the term "or" used herein may include any one or more combinations of the associated listed items depending on the actual situation.

[0029] See also Figure 1-3 , is a thin plate riveting bushing of this embodiment, used to connect with the mounting plate 100, wherein the mounting plate 100 has a mounting hole; wherein the thin plate riveting bushing includes:

[0030] A body 1, the body 1 is arranged in a ring shape extending in the axial direction, and the body 1 has a first surface and a second surface arranged opposite to each other in the axial direction;

[0031] A riveted portion 2, the riveted portion 2 is connected to the first surface of the main body 1, the outer diameter of the riveted portion 2 is smaller than the outer diameter of the main body 1, so that the riveted portion 2 and the main body 1 form a step-like structure, and the outer diameter of the riveted portion 2 is smaller than the inner diameter of the mounting hole;

[0032] The outer ring wall of the riveted portion 2 is provided with a serration portion 3 , and a gap 4 is provided between the serration portion 3 and the body 1 , and the gap 4 is used to accommodate at least a portion of the mounting plate 100 after deformation.

[0033] With the above structure, see Figure 3 When in use, the operator only needs to install the thin plate riveting bushing to one side of the mounting plate 100. Specifically, the mounting hole of the mounting plate 100 is preliminarily aligned and placed on the top of the riveting part 2. Then, the second surface of the body 1 is placed on the lower mold 6, and the upper mold 5 of the corresponding size is selected, so that the upper mold 5 is pressed down in the direction of the riveting part 2, and the axis of the upper mold 5 coincides with the axis of the riveting part 2. During the pressing process, the top surface of the mounting plate 100 first contacts the pressed upper mold 5, so that the bottom surface of the mounting plate 100 and the top surface of the riveting part 2 are aligned. Pressure is generated between the sawtooth portion 3 on the periphery of the riveted portion 2, and the sawtooth portion 3 on the periphery of the riveted portion 2 directly generates pressure on the bottom surface of the mounting plate 100. With the help of the sawtooth portion 3 with higher structural strength, further force is applied, so that the sawtooth portion 3 generates pressure on the bottom surface of the mounting plate 100 and another part of the mounting plate 100 is deformed. The deformed mounting plate 100 is embedded in the gap 4 on one side of the sawtooth portion 3 until the upper mold 5 is completely pressed down, so that the gap 4 is filled with a preset amount of the mounting plate 100, so that the mounting plate 100 and the sawtooth portion 3 on the periphery of the riveted portion 2 are riveted and fixed together.

[0034] In the above-mentioned use process, during the riveting process, the riveted part 2 can be pressed down only by a planar upper mold 5, so that at least part of the mounting plate 100 is pressed into the serrated part 3 on the periphery of the riveted part 2 to achieve the riveting effect. Specifically, the riveted part 2 in this embodiment is configured to extend approximately axially and has no deformation during the riveting process. The riveting process is that the outer serrated part 3 of the riveted part 2 is directly pierced and riveted along a circle of the mounting hole of the mounting plate 100. The riveting speed is faster, and the strength of the riveted part 2 itself can be made higher. The force during the riveting process is straight up and down, so that the metal material of the mounting plate 100 is squeezed and flows into the gap 4 at the bottom of the serrated part 3. The stroke of the upper mold 5 is linear and more stable, the riveting efficiency is significantly improved, and the riveting accuracy can be guaranteed.

[0035] It is worth noting that, compared with the existing riveting method, the present embodiment adopts a riveting method of directly piercing the mounting plate 100 by means of the serrated portion 3, so that the metal material of the mounting plate 100 is riveted into the gap 4 to achieve fixation, and the force condition is simpler, avoiding the defect of the mounting plate 100 being sunken due to the need to generate an oblique extrusion force on the mounting plate 100 during riveting, or the need to hollow out part of the mounting plate 100 to accommodate the metal material of the mounting plate 100. Therefore, with the structure of the present embodiment, the thickness and strength requirements of the mounting plate 100 are lower and it can still maintain its own sunken part, and indirectly, it is easier to produce thin plate parts with high specifications and precision.

[0036] For further information, please refer to Figure 2 The serration part 3 includes a plurality of serrations arranged at intervals around the peripheral ring wall of the riveting part 2. Specifically, the end of each serration has a slope 31 inclined toward the main body on a side facing away from the main body. By setting the slope 31 in the above structure, during the riveting process, when the serration part 3 and the bottom of the mounting plate 100 are directly subjected to force and squeezed, the metal material of the mounting plate 100 can flow into the bottom side of the serration part 3 more efficiently with the help of the guiding effect of the slope 31, reducing the resistance encountered during the riveting process, making the riveting smoother, avoiding the situation where the upper mold 5 is skewed or shaken due to excessive resistance during riveting, and indirectly improving the processing accuracy and efficiency.

[0037] Furthermore, the axial dimension of the riveted portion 2 is the same as the axial dimension of the mounting plate 100. That is to say, after the riveting is completed, the top surface of the mounting plate 100 is completely flush with the top surface of the riveted portion 2, and the thickness of the mounting plate 100 is the same as the thickness of the riveted portion 2, so that the connection structure with the mounting plate 100 and the thin plate riveted bushing in this embodiment has a complete top plane. At the same time, the main body 1 and the riveted portion 2 are set as an integrally formed structure, and the inner ring wall of the main body 1 and the inner ring wall of the riveted portion 2 are set as the same annular surface connected to each other. The connection structure of this embodiment has a complete annular surface without protrusions and inclinations. With the help of the above structure, after the riveting is completed, since the riveted portion 2 has not been deformed or has only undergone a very small deformation, compared with the existing flip riveting structure, a smoother upper surface and an inner wall structure of the middle hole can be obtained in this embodiment, and the quality of the finally formed connection structure is higher.

[0038] In one embodiment of riveting by means of a riveting device, the lower die 6 has a concave groove 61 on the side facing the body 1, and the groove 61 is used for the body 1 to be clamped, so as to prevent the body 1 from being separated from the lower die 6 during the riveting process. Specifically, the thickness of the groove 61 along the axial direction is not greater than the thickness of the body 1, so as to prevent the lower die 6 from lifting the mounting plate 100 to be processed placed above the body 1. Furthermore, the thickness of the groove 61 along the axial direction is equal to the thickness of the body 1, that is, during the riveting process, the top surface of the lower die 6 at the radial periphery of the groove 61 can play a supporting role for the mounting plate 100.

[0039] like Figure 4 As shown, it is an example of a use scenario of a thin plate riveting bushing. After riveting is completed, the top of the mounting plate 100 is still a complete plane. Therefore, another connecting plate 200 can be set on the top of the mounting plate 100 and connected to other components at the bottom through the holes of the thin plate riveting bushing.

[0040] The contents disclosed above are only preferred feasible embodiments of the present invention, and are not intended to limit the scope of the present invention. Therefore, all equivalent technical changes made using the contents of the present invention's specification and drawings are included in the scope of the present invention.

[0041] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other. Each embodiment focuses on the differences from other embodiments.

[0042] Although the present application has been described through embodiments, those skilled in the art will appreciate that there are many modifications and changes to the present application without departing from the spirit of the present application. It is intended that the attached embodiments include these modifications and changes without departing from the present application.

Claims

1. A thin plate riveting bushing for connecting with a mounting plate, wherein: The mounting plate has a mounting hole; characterized in that the thin plate riveting bushing comprises: A body, the body is arranged in a ring shape extending in the axial direction, and the body has a first surface and a second surface arranged opposite to each other in the axial direction; A riveted portion, the riveted portion is connected to the first surface of the main body, the outer diameter of the riveted portion is smaller than the outer diameter of the main body, so that the riveted portion and the main body form a step-shaped structure, and the outer diameter of the riveted portion is smaller than the inner diameter of the mounting hole; Wherein, the outer ring wall of the riveted portion is provided with a serration portion, and a gap is provided between the serration portion and the body, and the gap is used to accommodate at least a part of the mounting plate after deformation.

2. The thin plate riveting bushing according to claim 1, characterized in that: The serration portion includes a plurality of serrations spaced apart around a peripheral annular wall of the rivet portion.

3. The thin plate riveting bushing according to claim 2, characterized in that: A side of the end of each saw tooth facing away from the body has an inclined surface inclined toward the body.

4. The thin plate riveting bushing according to claim 1, characterized in that: The dimension of the riveted portion along the axial direction is the same as the dimension of the mounting plate along the axial direction.

5. The thin plate riveting bushing according to claim 1, characterized in that: The main body and the riveted portion are configured as an integrally formed structure, and the inner annular wall of the main body and the inner annular wall of the riveted portion are configured as the same connected annular surface.

6. A connection structure, comprising a mounting plate and a thin plate riveting bushing as claimed in any one of claims 1 to 5, characterized in that: The mounting plate and the thin plate riveting bushing are riveted together, and the serrations are inserted into the inner wall of the mounting hole, and at least part of the mounting plate is arranged in the gap between the serrations and the body.

7. A riveting device for riveting a mounting plate and a thin plate riveting bushing as claimed in any one of claims 1 to 5, wherein: The riveting device includes an upper mold corresponding to one side of the riveting part and a lower mold corresponding to one side of the main body, and is characterized in that the side of the upper mold facing the riveting part is set as a plane, and the radial dimension of the upper mold is not less than the aperture of the mounting hole.

8. The riveting device according to claim 7, characterized in that: The lower die has a concave groove on one side facing the main body, and the groove is used for the main body to be clamped, so as to prevent the main body from being separated from the lower die during the riveting process.

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