Rivet nut playing role of cushion block and having positioning function

Abstract

The utility model provides a rivet nut with a cushion block function and a positioning function, which is characterized in that an inner hole is formed in a rivet nut body, a nut head flange is arranged at the top of the rivet nut body, and a rivet rod body is arranged at the bottom of the rivet nut body; the positioning groove is formed in the outer contour of the top of the rivet nut body, the thickness of the nut head flange is increased, the nut head flange has the characteristics of a cushion block, the situation that the cushion block is neglected during machining is prevented, machining of one part is reduced, and the machining cost is reduced. During installation, the nut head flange can be clamped on a riveter through the positioning groove, the installation concentricity of the rivet nut is improved, during follow-up installation of automobile accessories, the nut head flange can abut against the positioning groove of the nut head flange in the rivet nut firstly, then bolts are screwed into the automobile accessories and the rivet nut body, the preassembling and positioning effects are achieved, the connection precision is improved, and the service life of the rivet nut is prolonged. In addition, the contact area between the automobile part and the rivet nut body can be increased, the friction force is increased, and a certain locking effect is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of automobile parts especially relates to the technical field of pull rivet nut, specifically to a pull rivet nut with cushioning effect and positioning function. BACKGROUND

[0002] The pull rivet connector has been widely used in the field of automobile parts, which is mainly composed of a pull rivet nut and a cushioning block. The pull rivet nut can firmly connect automobile accessories and automobile sheet metal parts together, ensuring the stability and safety of automobile parts. The cushioning block is arranged on the top of the pull rivet nut, which can increase the contact area and reduce the pressure, thereby protecting the pull rivet nut and preventing it from loosening, and improving the connection strength of the pull rivet connector. However, during the actual installation process, the following problems are found:

[0003] (1) During the use of the customer, after the pull rivet nut is installed on the sheet metal part by the rivet gun, the bolt is inserted into the interior, and the cushioning block may be missed, which will lead to rework. If the missing of the cushioning block is not found in the subsequent detection, the connection strength between the automobile accessories and the automobile sheet metal parts will not meet the standard, and noise may occur after a period of operation of the vehicle.

[0004] (2) There is no positioning between the cushioning block and the pull rivet nut, and the tolerances of the inner hole of the cushioning block and the inner hole thread hole of the pull rivet nut are also different, which leads to the assembly gap between the two. When the bolt is inserted, the position of the cushioning block may be shifted, thereby affecting its protection and anti-loosening function.

[0005] (3) Since the pull rivet nut and the cushioning block are two different parts, they need to be cold upset formed separately, which increases the processing cost. SUMMARY

[0006] In view of the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide a pull rivet nut with cushioning effect and positioning function, which solves the difficulties of the prior art.

[0007] To achieve the above-mentioned purpose and other related purposes, the utility model provides a pull rivet nut with cushioning effect and positioning function, which comprises:

[0008] A pull rivet nut body 1 is provided with an inner hole 13, the top of the pull rivet nut body 1 is a nut head flange 11, and the bottom of the pull rivet nut body 1 is a pull rivet rod body 12.

[0009] A positioning groove 111 is arranged on the outer contour of the top of the pull rivet nut body 1.

[0010] Further, the positioning groove 111 makes the top end of the nut head flange 11 of the top of the pull rivet nut body 1 present a stepped shape.

[0011] In the technical solution, when the rivet nut body 1 is positioned by the positioning step during installation of the rivet nut body 1 on an automobile sheet metal part by using a rivet gun:

[0012] (1) the concentricity of the rivet nut installation is improved;

[0013] (2) when the automobile accessory of a subsequent customer is installed on the nut head flange 11 at the top of the rivet nut body 1, the positioning step can be used for positioning, and the connection accuracy is improved;

[0014] (3) the contact area between the rivet nut body 1 and the automobile accessory is increased, and the friction force is increased.

[0015] According to the preferred solution, the maximum radius of the outer contour of the nut head flange 11 is R1, the minimum radius of the outer contour of the rivet rod body 12 is R2, and the groove width of the positioning groove 111 is D1;

[0016] R1-D1>R2.

[0017] In the technical solution, the size of the positioning groove 111 is limited:

[0018] The strength of the positioning groove 111 at the top of the nut head flange 11 is ensured, and the deformation of the top of the nut head flange 11 due to insufficient strength is prevented, which causes the inner hole 13 at the top to extrude the bolt and cause local deformation of the bolt, thereby reducing the connection strength and stability of the rivet nut body 1.

[0019] According to the preferred solution, the thickness of the nut head flange 11 is A1;

[0020] A1≥5mm.

[0021] In the technical solution, the thickness of the nut head flange 11 is limited in size, and the nut head flange 11 is designed to be thickened, so that the nut head flange 11 plays the role of a spacer in the background technology, and the overall strength of the rivet nut body 1 during riveting is improved.

[0022] According to the preferred solution, the rivet rod body 12 is provided with an outer knurl 121 on the outer contour of the side close to the nut head flange 11.

[0023] Further, the outer knurl 121 is a vertical knurl or a diagonal knurl.

[0024] In the technical solution, the integrated knurl structure is provided on the outer contour of the top of the rivet rod body 12:

[0025] (1) the toughness of the deformation area of the rivet rod body 12 during riveting deformation is increased, and the service life of the rivet nut with the spacer function and the positioning function is improved;

[0026] (2) due to the presence of the outer knurl 121, under the drive of sufficient pull rivet force, the knurl can be clamped into the required installation hole of the automobile sheet metal part, so that the pull rivet nut body 1 and the automobile sheet metal part form an interference fit, which can avoid the rotation of the rivet nut after installation, and also reduce the relative rotation between the rivet nut body and the bolt installed in the subsequent hole.

[0027] According to the preferred scheme, the inner hole 13 is divided into three sections from top to bottom, which are process hole 131, rivet nut installation deformation hole 132 and threaded hole 133 respectively.

[0028] The process hole 131 is arranged at the top of the nut head flange 11.

[0029] The rivet nut installation deformation hole 132 is arranged at the bottom of the nut head flange 11 and the top of the pull rivet rod body 12, and the rivet nut installation deformation hole 132 is communicated with the process hole 131.

[0030] The threaded hole 133 is arranged at the bottom of the pull rivet rod body 12, and the threaded hole 133 is communicated with the rivet nut installation deformation hole 132.

[0031] According to the preferred scheme, the diameter of the process hole 131 is greater than the diameter of the rivet nut installation deformation hole 132, and the depth of the process hole 131 is A2.

[0032] Wherein A2≤A1-1mm.

[0033] In the technical solution, the process hole 131 and the rivet nut installation deformation hole 132 in the inner hole 13 are both light holes, and the machining precision of the rivet nut installation deformation hole 132 is higher than that of the process hole 131.

[0034] When machining, the process hole 131 is machined first, and then the rivet nut installation deformation hole 132 is machined, because the diameter of the rivet nut installation deformation hole 132 is smaller than the diameter of the process hole 131, so during machining, the part can be reduced, the difficulty of cold upsetting forming is reduced, and the use of materials is reduced. Reduce processing cost.

[0035] In the technical solution, if the depth of the process hole 131 is greater than the thickness of the nut head flange 11, the overall strength of the pull rivet nut body 1 will be reduced during use, and the pull rivet rod body 12 will be broken.

[0036] According to the preferred scheme, the threaded hole (133) of the pull rivet nut body (1) adopts a blind hole or a through hole structure.

[0037] The utility model has the following beneficial effects:

[0038] (1) the thickness of the nut head flange 11 at the top of the thickened rivet nut body 1 is increased, the characteristics and effects of the gasket are integrated on the rivet nut, the situation of missing the gasket during processing is prevented, and the processing cost is reduced by reducing one part;

[0039] (2) the positioning groove 111 is formed at the top of the nut head flange 11, the nut head flange 11 can be clamped on the rivet gun during installation, the nut head flange 11 is coaxial with the rotating head of the rivet gun, the concentricity of the rivet nut installation is improved, the stability of the rivet nut body 1 during installation is improved, the situation of the nut installation is reduced, and the subsequent automobile accessory installation can also be installed on the nut head flange 11 outside the positioning groove 111, and then the automobile accessory and the rivet nut body 1 are screwed into the bolt, which plays a pre-positioning role, improves the connection accuracy, and can increase the contact area between the automobile accessory and the rivet nut body 1 to increase the friction force, and has a certain stop effect.

[0040] Hereinafter, the optimal embodiment for implementing the present application will be described in more detail in conjunction with the drawings, so that the features and advantages of the present application can be easily understood. BRIEF DESCRIPTION OF DRAWINGS

[0041] Figure 1 It is shown as a three-dimensional structure schematic diagram of the present application;

[0042] Figure 2 It is shown as a three-dimensional structure schematic diagram of the present application from another perspective;

[0043] Figure 3 It is shown as a front view of the present application;

[0044] Figure 4 It is shown as a sectional view of the present application about A-A in the front view;

[0045] REFERENCE NUMERALS

[0046] 1, rivet nut body;

[0047] 11, nut head flange;

[0048] 111, positioning groove;

[0049] 12, rivet rod body;

[0050] 121, outer knurl;

[0051] 13, inner hole;

[0052] 131, process hole;

[0053] 132, rivet nut installation deformation hole;

[0054] 133, threaded hole; DETAILED DESCRIPTION

[0055] In order to make the purpose, technical solution and advantages of the technical solution of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of the specific embodiments of the present invention. The same figure marks in the drawings represent the same parts. It should be noted that the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0056] Compared to the embodiments shown in the drawings, feasible embodiments within the scope of protection of the present invention may have fewer components, other components not shown in the drawings, different components, differently arranged components, or differently connected components, etc. In addition, two or more components in the drawings may be implemented in a single component, or a single component shown in the drawings may be implemented as multiple separate components.

[0057] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by persons of ordinary skill in the field to which the present invention belongs. The words "first", "second" and similar terms used in the specification and claims of the present utility model patent application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "a" or "an" do not necessarily indicate a quantity limitation. Words such as "include" or "comprising" mean that the elements or objects preceding the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0058] The utility model provides a rivet nut that acts as a pad and has a positioning function, which is used in the design process of the rivet nut. The utility model does not limit the position of the automobile sheet metal parts to be connected by the rivet nut and the type of automobile parts. However, the structure of the rivet nut that acts as a pad and has a positioning function is particularly suitable for designing a rivet nut that acts as a pad and has a positioning function.

[0059] In general, the rivet nut proposed by the present invention, which acts as a spacer and has a positioning function, mainly includes: a nut head flange 11, a rivet rod 12, a positioning groove 111 and an inner hole 13.Figure 1 It shows the arrangement relationship of the nut head flange 11, the rivet rod body 12, the positioning groove 111 and the inner hole 13.

[0060] In order to achieve the purpose of giving the rivet nut pad block function and positioning during installation, the background technology solves the problem that the pad block is missing during the installation of the rivet nut on the sheet metal part by the rivet gun during the customer's use process, and there is an assembly gap between the pad block and the rivet nut, and the position of the pad block may be offset during the installation of the bolt, thereby affecting the pad block protection and anti-loose function, and the rivet nut and the pad block are two different parts, which need to be cold upsetting formed respectively, and the cost is high.

[0061] Therefore, in the technical scheme provided by the embodiment, the rivet nut body 1 is divided into a nut head flange 11 and a rivet rod body 12, wherein the nut head flange 11 is thickened, and the thickness of the nut head flange 11 is limited to A1, A1≥5mm, so that the nut head flange 11 plays the role of the pad block in the background technology, and the overall strength of the rivet nut body 1 during riveting is improved.

[0062] In addition, a positioning groove 111 is formed on the outer contour of the top of the rivet nut body 1, and the positioning groove 111 makes the top end outside of the nut head flange 11 of the top of the rivet nut body 1 present a stepped shape.

[0063] As shown in the foregoing, the positioning groove 111 designed for positioning function makes the rivet nut with pad block function and positioning function during installation, and the nut head flange 11 can be clamped on the rivet gun, so that the nut head flange 11 is coaxial with the rotating head of the rivet gun, the concentricity of the rivet nut installation is improved, and the stability of the rivet nut body 1 during installation is improved, the situation that the nut installation is inclined is reduced, and the nut head flange 11 in the rivet nut with pad block function and positioning function can be first installed on the rivet nut with pad block function and positioning function during the subsequent installation of automobile accessories, and then the bolt is installed in the automobile accessories and the rivet nut body 1, which plays a pre-positioning role, improves the connection accuracy, and can increase the contact area between the automobile accessories and the rivet nut body 1 to increase the friction, and has a certain stop effect.

[0064] It should be noted that the maximum radius of the outer contour of the nut head flange 11 is R1, the minimum radius of the outer contour of the rivet rod body 12 is R2, and the groove width of the positioning groove 111 is D1, and the groove width of the positioning groove 111 is limited in size so that R1-D1>R2.

[0065] As shown in the foregoing, the embodiment is used to ensure that the nut head flange 11 has a stepped portion at the top of the positioning groove 111 to ensure the strength of the nut head flange 11 during subsequent assembly, prevent the top of the nut head flange 11 from deforming due to insufficient strength, cause the inner hole 13 to extrude the bolt at the top of the hole wall, and cause the local deformation of the bolt, thereby reducing the overall connection strength and stability.

[0066] In addition, an outer knurl 121 is arranged on the outer contour of the pull rivet body 12 on the side close to the nut head flange 11. The outer knurl 121 is a vertical knurl or a diagonal knurl.

[0067] As shown in the foregoing, the embodiment is used to ensure the connection strength of the pull rivet body 12 and the automobile sheet metal part when the pull rivet body 12 is installed in the inner hole of the automobile sheet metal part. The integrated knurl structure arranged on the outer contour of the top of the pull rivet body 12 can increase the toughness of the deformation area during the deformation of the pull rivet body 12, thereby improving the service life. On the other hand, due to the presence of the outer knurl 121, under the driving of sufficient pull rivet force, the knurl can be clamped into the automobile sheet metal part mounting hole required to be installed by the pull rivet body 12, so that the rivet nut body 1 and the automobile sheet metal part form an interference fit, which can avoid the rotation of the rivet nut after installation, and can also reduce the relative rotation between the rivet nut body and the bolt installed in the subsequent inner hole.

[0068] In addition, the rivet nut body 1 is provided with an inner hole 13. The inner hole 13 is divided into three sections from top to bottom, which are a process hole 131, a rivet nut installation deformation hole 132, and a threaded hole 133. The process hole 131 is arranged at the top of the nut head flange 11. The rivet nut installation deformation hole 132 is arranged at the bottom of the nut head flange 11 and the top of the pull rivet body 12. The rivet nut installation deformation hole 132 is communicated with the process hole 131. The threaded hole 133 is arranged at the bottom of the pull rivet body 12. The threaded hole 133 is communicated with the rivet nut installation deformation hole 132.

[0069] It should be noted that the process hole 131 and the rivet nut installation deformation hole 132 are both light holes, but the machining precision of the rivet nut installation deformation hole 132 is higher than that of the process hole 131. Therefore, the design is that the hole diameter of the process hole 131 is greater than that of the rivet nut installation deformation hole 132. The process hole 131 is machined first, and then the rivet nut installation deformation hole 132 is machined. Because the hole diameter of the rivet nut installation deformation hole 132 is smaller than that of the process hole 131, the part can be scraped during machining, the difficulty of cold heading is reduced, the use of materials is reduced, and the processing cost is reduced.

[0070] It also needs to be explained that in order to prevent the strength of the nut head flange 11 part in the pull nut body 1 from being too low, the depth of the process hole 131 is limited, the depth of the process hole 131 is A2, wherein A2≤A1-1mm, preventing the depth of the process hole 131 from being greater than the thickness of the nut head flange 11, which will reduce the overall strength of the pull nut body 1 in use, and the pull rod body 12 will be broken.

[0071] The above embodiments only exemplarily illustrate the principles and effects of the present application, and are not used to limit the present application. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the present application should be covered by the claims of the present application.

Claims

1. A rivet nut that acts as a spacer and has a positioning function, characterized in that: Include: The pull rivet nut body (1) is provided with an inner hole (13) inside, the top of the pull rivet nut body (1) is a nut head flange (11), the bottom of the pull rivet nut body (1) is a pull rivet rod body (12); The positioning groove (111) is provided on the outer contour of the top of the pull rivet nut body (1).

2. The pilot nut according to claim 1, wherein The maximum radius of the outer contour of the nut head flange (11) is R1, the minimum radius of the outer contour of the pull rivet rod body (12) is R2, and the groove width of the positioning groove (111) is D1; Wherein: R1-D1>R2.

3. The pilot nut according to claim 2, wherein The thickness of the nut head flange (11) is A1; Wherein: A1≥5mm.

4. The pilot nut according to claim 3, wherein The outer knurl (121) is arranged on the outer contour of the side close to the nut head flange (11) of the pull rivet rod body (12).

5. The pilot nut according to claim 4, wherein The inner hole (13) is divided into three sections from top to bottom, which are process hole (131), rivet nut installation deformation hole (132) and threaded hole (133); The process hole (131) is provided at the top of the nut head flange (11); The rivet nut installation deformation hole (132) is provided at the bottom of the nut head flange (11) and the top of the pull rivet rod body (12), and the rivet nut installation deformation hole (132) is communicated with the process hole (131); The threaded hole (133) is provided at the bottom of the pull rivet rod body (12), and the threaded hole (133) is communicated with the rivet nut installation deformation hole (132).

6. The pilot nut according to claim 5, wherein The hole diameter of the process hole (131) is larger than the hole diameter of the rivet nut installation deformation hole (132), and the depth of the process hole (131) is A2; Wherein A2≤A1-1mm.

7. The pilot nut according to claim 6, wherein The threaded hole (133) of the pull rivet nut body (1) adopts a blind hole or a through hole structure.

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