A thin-walled nut seat structure

Abstract

A thin-walled nut seat structure includes a crimping bolt with an assembly hole, a nut seat with an inner hole, and an annular support plate. One end of the inner hole has an internal thread. The support plate is connected to the nut seat and corresponds to the other end of the inner hole. The middle of the support plate has an annular sealing protrusion facing the inner hole, and the sealing protrusion is coaxial with the inner hole. The crimping bolt has an external thread and is screwed into the inner hole from the threaded end, so that a crimping area for crimping a workpiece is formed between the end of the crimping bolt and the sealing protrusion. This solution achieves workpiece fixation through the crimping bolt and effective sealing of the workpiece through the annular sealing protrusion, exhibiting good practicality.

Description

Technical Field

[0001] This utility model relates to the technical field of mechanical fasteners, and more specifically to a thin-walled nut seat structure. Background Technology

[0002] A differential pressure line is a specialized pipeline device used to measure the pressure difference of fluids. It is commonly used in engine intake systems, exhaust systems, and other applications. Its core function is to optimize engine performance or control emissions by measuring the pressure difference between the two ends.

[0003] To facilitate maintenance and disassembly, differential pressure pipes are typically equipped with external threads at their ends. During installation, a nut is fitted onto the end of the pipe to secure it in place. However, while conventional nuts can achieve a threaded connection, a gap remains between the pipe end and the installation location, affecting sealing performance. Utility Model Content

[0004] The purpose of this invention is to solve the problem that although conventional nuts in the prior art can screw and fix the end of the differential pressure tube, there is still an assembly gap between the end of the differential pressure tube and the installation position, which affects the sealing performance.

[0005] To address the aforementioned problems, this utility model provides a thin-walled nut seat structure, comprising a crimping bolt with an assembly hole, a nut seat with an inner hole, and an annular support plate. One end of the inner hole is provided with an internal thread, and the support plate is connected to the nut seat and corresponds to the other end of the inner hole. The middle part of the support plate is provided with an annular sealing protrusion facing the inner hole, and the sealing protrusion is coaxial with the inner hole. The crimping bolt is provided with an external thread, and the crimping bolt is used to screw into the end of the inner hole with the internal thread, so that a crimping area for crimping a workpiece is formed between the end of the crimping bolt and the sealing protrusion.

[0006] When differential pressure tubes and other workpieces need to be installed, first insert the end of the workpiece into the inner hole from the end with the internal thread, so that the end of the workpiece abuts against the sealing protrusion of the support plate. Then, screw the crimping bolt fitted on the workpiece into the inner hole from the end with the internal thread until the end of the workpiece is crimped in the crimping area between the sealing protrusion and the crimping bolt. Compared with the prior art, the above solution not only achieves stable fixation of the workpiece through the crimping bolt, but also achieves effective sealing of the end of the workpiece through the annular sealing protrusion combined with the nut seat, which has better practicality.

[0007] In an improved embodiment, the radial cross-section of the sealing protrusion is arched, with the closed end of the arch facing the crimping bolt. The arched structure of the sealing protrusion is used to deform and expand radially when the crimping bolt is screwed into the inner hole, and abut against the inner hole wall to achieve a tight seal. Thus, the deformation of the arched structure achieves the abutment and fit between the sealing protrusion and the inner hole wall, effectively achieving a seal.

[0008] In an improved embodiment, the inner peripheral wall of the end of the sealing protrusion away from the crimping bolt is provided with an outwardly bent portion, and the side of the support plate facing away from the crimping bolt is provided with a groove structure corresponding to the outer peripheral wall of the sealing protrusion. The outer edge of the bent portion is connected to the groove structure so that the bent portion closes the opening of the arched structure of the sealing protrusion, thereby effectively improving the structural strength of the sealing protrusion through the bent portion.

[0009] In an improved embodiment, the bent portion and the groove structure are connected by welding or riveting, which is convenient to process and provides good connection stability.

[0010] In an improved embodiment, the outer peripheral wall of one end of the corresponding support piece of the nut seat is provided with a protruding flange portion, and the outer edge of the support piece and the flange portion are connected by welding or riveting, which is convenient to process and has good connection stability. Attached Figure Description

[0011] Figure 1 This is a schematic cross-sectional view of a thin-walled nut seat structure; Figure 2 This is a top view of a thin-walled nut seat structure (the crimping bolt is omitted). Figure 3 For along Figure 2 Cross-sectional view of section AA in the middle; Figure 4 This is a schematic diagram of the cross-section of a thin-walled nut seat structure after the workpiece is installed.

[0012] Explanation of reference numerals in the attached figures. 1. Crimping bolt; 11. Assembly hole; 2. Nut seat; 21. Inner hole; 22. Flange; 3. Support plate; 31. Sealing protrusion; 32. Bend; 33. Groove structure; 4. Crimping area. Detailed Implementation

[0013] It should be understood by those skilled in the art that the following embodiments are merely illustrative of the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0014] In the following description of the embodiments, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0015] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0016] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0017] Please see Figures 1-4 The present invention provides a thin-walled nut seat structure, including a crimping bolt 1 with an assembly hole 11, a nut seat 2 with an inner hole 21, and an annular support plate 3. One end of the inner hole 21 is provided with an internal thread. The support plate 3 is connected to the nut seat 2 and corresponds to the other end of the inner hole 21. The middle part of the support plate 3 is provided with an annular sealing protrusion 31 facing the inner hole 21, and the sealing protrusion 31 is coaxial with the inner hole 21. The crimping bolt 1 is provided with an external thread. The crimping bolt 1 is used to screw into the inner hole 21 from the end with the internal thread, so that a crimping area 4 for crimping the workpiece is formed between the end of the crimping bolt 1 and the sealing protrusion 31.

[0018] In this embodiment, the workpiece is a differential pressure pipe, such as... Figure 4 As shown, the differential pressure tube has an outward protrusion at its end, and the crimping bolt 1 is fitted onto the differential pressure tube through the assembly hole 11. When the differential pressure tube or other workpieces need to be installed, the end of the workpiece is first inserted into the inner hole 21 from the end with the internal thread, so that the end of the workpiece abuts against the sealing protrusion 31 of the support plate 3. Then, the crimping bolt 1 fitted onto the workpiece is screwed into the inner hole 21 from the end with the internal thread until the end of the workpiece is crimped in the crimping area 4 between the sealing protrusion 31 and the crimping bolt 1. Compared with the prior art, the above solution not only achieves stable fixing of the workpiece through the crimping bolt 1, but also achieves effective sealing of the end of the workpiece through the annular sealing protrusion 31 combined with the nut seat 2, which has better practicality. In addition, the protrusion...

[0019] In this embodiment, the radial cross-section of the sealing protrusion 31 is arched, and the closed end of the arched structure is oriented towards the crimping bolt 1. The arched structure of the sealing protrusion 31 is used to deform and expand radially when the crimping bolt 1 is screwed into the inner hole 21, and abut against the inner hole 21 to achieve a tight seal. Thus, the deformation of the arched structure achieves the abutment and fit between the sealing protrusion 31 and the inner hole 21, effectively achieving a seal.

[0020] Furthermore, the inner peripheral wall of the end of the sealing protrusion 31 away from the crimping bolt 1 is provided with an outwardly bent portion 32, and the side of the support plate 3 facing away from the crimping bolt 1 is provided with a groove structure 33 corresponding to the outer peripheral wall of the sealing protrusion 31. The outer edge of the bent portion 32 is connected to the groove structure 33 so that the bent portion 32 closes the opening of the arched structure of the sealing protrusion 31, thereby effectively improving the structural strength of the sealing protrusion 31 through the bent portion 32.

[0021] In this embodiment, the bent portion 32 and the groove structure 33 are connected by welding or riveting, which is convenient to process and has good connection stability.

[0022] In the embodiment, the outer peripheral wall of one end of the corresponding support piece 3 of the nut seat 2 is provided with a protruding flange portion 22. The outer edge of the support piece 3 and the flange portion 22 are connected by welding or riveting, which is convenient to process and has good connection stability.

[0023] It should be noted that in the description of this application, the terms "inner" and "outer," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application. All directional indications (such as up, down, left, right, front, back, inner, and outer) are only used to explain the relative positional relationships and movement between components in a specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0024] In the description of this application, the references to terms such as "an embodiment," "some embodiments," "in this embodiment," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0025] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A thin-walled nut seat structure, characterized in that, The device includes a crimping bolt (1) with an assembly hole (11), a nut seat (2) with an inner hole (21), and an annular support plate (3). One end of the inner hole (21) is provided with an internal thread. The support plate (3) is connected to the nut seat (2) and corresponds to the other end of the inner hole (21). The middle part of the support plate (3) is provided with an annular sealing protrusion (31) facing the inner hole (21), and the sealing protrusion (31) is coaxial with the inner hole (21). The crimping bolt (1) is provided with an external thread. The crimping bolt (1) is used to be screwed into the inner hole (21) from the end with the internal thread, so that a crimping area (4) for crimping the workpiece is formed between the end of the crimping bolt (1) and the sealing protrusion (31).

2. The thin-walled nut seat structure according to claim 1, characterized in that, The radial section of the sealing protrusion (31) is an arched structure, and the closed end of the arched structure is set towards the crimping bolt (1). The arched structure of the sealing protrusion (31) is used to be squeezed and deformed radially when the crimping bolt (1) is screwed into the inner hole (21), and abuts against the inner hole (21) wall to achieve a close seal.

3. The thin-walled nut seat structure according to claim 2, characterized in that, The inner peripheral wall of the sealing protrusion (31) away from the crimping bolt (1) is provided with an outwardly bent portion (32), and the support plate (3) is provided with a groove structure (33) on the side opposite to the crimping bolt (1) corresponding to the outer peripheral wall of the sealing protrusion (31). The outer edge of the bent portion (32) is connected to the groove structure (33) so that the bent portion (32) closes the opening of the arched structure of the sealing protrusion (31).

4. The thin-walled nut seat structure according to any one of claims 1-3, characterized in that, The bent part (32) and the groove structure (33) are connected by welding or riveting.

5. The thin-walled nut seat structure according to any one of claims 1-3, characterized in that, The outer peripheral wall of one end of the corresponding support plate (3) of the nut seat (2) is provided with a protruding flange (22), and the outer edge of the support plate (3) and the flange (22) are connected by welding or riveting.

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