A fastener with waterproof gasket

Abstract

The utility model discloses a fastener with a waterproof gasket, which belongs to the technical field of fasteners, and includes a riveted stud, a first waterproof gasket, a second waterproof gasket and a screw. The riveted stud is riveted on the front cover by a riveting process, the first waterproof gasket is inserted into the first groove at the end of the riveted stud, the tail of the screw passes through the second waterproof gasket, and then passes through the back cover to connect with the threaded hole, when the tail of the screw is tightened with the threaded hole, the end face of the fourth protrusion abuts against the bottom face of the second circular groove, the circumferential surface of the fourth protrusion abuts against the circumferential surface of the second circular groove, the end face of the first protrusion abuts against the bottom face of the first circular groove, and the circumferential surface of the first protrusion abuts against the circumferential surface of the first circular groove, forming a sealing structure, after the screw and the riveted stud are tightened, the first waterproof gasket and the second waterproof gasket work together to solve the problem of sealing and waterproofing at the screw of the back cover.

Description

Technical Field

[0001] The utility model relates to the technical field of fasteners, in particular to a fastener with a waterproof gasket. Background Art

[0002] At present, the most common fastener connection method is metal riveting, because riveting has many advantages over welding and bonding. Riveting uses metal riveting parts, which are less sensitive to temperature than bonding; compared with welding, it has lower requirements for manufacturing process and personnel technical proficiency, and the riveted structure is more stable. The working principle of riveting is to make the material into the shape we need through the plastic deformation of the riveted parts to achieve the effect of rigid connection. Riveting is classified according to the process: press riveting, rotary riveting, expansion riveting, pull riveting and other methods.

[0003] The self-clinching nut column in the fastener is also called the self-clinching stud or nut column. It is a fastener used in sheet metal, thin plates, chassis, and cabinets. The self-clinching nut column has a hexagonal shape at one end and a cylindrical shape at the other end. There is a back-cut groove between the hexagonal shape and the cylindrical shape. The hexagonal head is pressed into the preset hole of the thin plate by a press, so that the periphery of the hole is plastically deformed. The deformed part is squeezed into the back-cut groove of the self-clinching nut column, so that the self-clinching nut column is riveted to the thin plate, thereby forming an effectively fixed internal thread on the thin plate. After the stud is pressed into one of the plates by a press, the other plate is then screwed into the stud to achieve the fixed installation of the two plates.

[0004] Most existing inverter products are fixed by screwing the front cover, which is not aesthetically pleasing. Inverters that use screws from the back cover have problems such as poor waterproofing at the screw position and high difficulty in machine processing. Because the inverter needs to work outdoors, it needs to meet the IP65 waterproof rating. Utility Model Content

[0005] In order to overcome the above problems, the utility model provides a fastener with a waterproof gasket to solve the problems of poor waterproof effect at the fixing screw position and high difficulty in whole machine processing in the existing inverter with screws driven from the back cover, so that the waterproof effect reaches the waterproof level of IP65, and the processing difficulty is not high.

[0006] In order to achieve the above-mentioned purpose, the technical solution of the utility model is: a fastener with a waterproof gasket, comprising a self-riveting stud, a screw, a first waterproof gasket and a second waterproof gasket, the self-riveting stud comprises a screw and a nut, one end of the screw is provided with a nut, the other end of the screw is provided with a first groove and a first protrusion, the interior of the first protrusion is provided with a connecting hole, the first groove is inserted into the first waterproof gasket, the self-riveting stud is provided with a matching screw, the screw passes through the second waterproof gasket and is connected to the connecting hole.

[0007] Preferably, an annular second protrusion is provided at the end of the first groove along the circumference, and the end of the first groove is lower than the first protrusion.

[0008] Preferably, the first protrusion is columnar.

[0009] Preferably, the connecting hole is a threaded hole.

[0010] Preferably, the first waterproof gasket is annular, with an annular third protrusion on the circumference of one end and an annular fourth protrusion on the circumference of the other end, the third protrusion and the fourth protrusion form a second groove, the third protrusion matches the first groove, the second protrusion matches the second groove, and a circular hole matching the first protrusion is provided in the middle.

[0011] Preferably, the screw comprises a screw tail and a screw head, one end of the screw tail is provided with the screw head, and the circumference of the screw tail is provided with threads, and the threads are connected to the connecting hole.

[0012] Preferably, the second waterproof gasket is annular, the circumferential diameter of the second waterproof gasket is larger than the circumferential diameter of the screw head, and a circular hole matching the tail of the screw is provided in the center.

[0013] Preferably, the screw head may also be randomly provided with a fifth protrusion.

[0014] Preferably, a circular hole is provided on the back cover that cooperates with the rivet stud, a first circular groove is provided on the circular hole, a second circular groove is provided above the first circular groove, the diameter of the first circular groove is larger than the diameter of the circular hole, and the diameter of the second circular groove is larger than the diameter of the first circular groove.

[0015] Compared with the existing solutions, the beneficial effects of the utility model are:

[0016] The utility model discloses a fastener with a waterproof gasket, which can solve the problem of poor waterproofing of an inverter with screws driven from the rear cover, and the whole machine is not difficult to process, thereby avoiding the problem of unsightly appearance caused by fixing with screws driven from the front cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 It is an overall schematic diagram of an embodiment of the utility model;

[0019] Figure 2 yes Figure 1 A cross-sectional view at AA;

[0020] Figure 3 It is a three-dimensional diagram of a pressure riveting stud according to an embodiment of the utility model;

[0021] Figure 4 It is a front view of the self-clinching stud of the embodiment of the utility model;

[0022] Figure 5 It is a left side view of the self-clinching stud of the embodiment of the utility model;

[0023] Figure 6 yes Figure 5 A cross-sectional view at BB;

[0024] Figure 7 is a schematic diagram of a screw in an embodiment of the utility model from a first perspective;

[0025] Figure 8 It is a front view of a first waterproof gasket of an embodiment of the utility model;

[0026] Fig. 9 is a top view of a first waterproof gasket according to an embodiment of the utility model;

[0027] Fig.10 is a three-dimensional diagram of a second waterproof gasket of an embodiment of the utility model;

[0028] Fig.11 It is a three-dimensional diagram of the rear cover plate of the embodiment of the utility model;

[0029] Fig.12 It is a schematic diagram of the screw from a second viewing angle of an embodiment of the utility model.

[0030] In the figure:

[0031] 1-pressure riveting stud; 2-screw; 3-first waterproof gasket; 4-second waterproof gasket; 5-front cover; 6-back cover;

[0032] 11-screw; 12-nut; 13-first groove; 14-connecting hole; 15-first protrusion; 16-second protrusion;

[0033] 21-screw tail; 22-screw head; 23-thread; 24-fifth protrusion;

[0034] 31-third protrusion; 32-fourth protrusion; 33-second groove;

[0035] 61 - circular hole; 62 - first circular groove; 63 - second circular groove. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] like Figure 1-12 As shown, an embodiment provides a fastener with a waterproof gasket, comprising a self-riveting stud 1, a screw 2, a first waterproof gasket 3 and a second waterproof gasket 4, the self-riveting stud 1 comprising a screw 11 and a nut 12, one end of the screw 11 is provided with a nut 12, the other end of the screw 11 is provided with a first groove 13 and a first protrusion 15, the interior of the first protrusion 15 is provided with a connecting hole 14, the first groove 13 is inserted into the first waterproof gasket 3, the self-riveting stud 1 is provided with a matching screw 2, the self-riveting stud 1 is fixed to the front cover 5 by a riveting process, the screw 2 passes through the second waterproof gasket 4 and the back cover 6, and is connected to the connecting hole 14, so as to achieve the effect of connecting the front cover 5 and the back cover 6 together.

[0038] like Figure 1-6 As shown in , 8 and 9, an annular second protrusion 16 is provided at the end of the first groove 13 along the circumference, the first waterproof gasket 3 is annular, an annular third protrusion 31 is provided on the circumference of one end, and an annular fourth protrusion 32 is provided on the circumference of the other end, the third protrusion 31 and the fourth protrusion 32 form a second groove 33, when the first waterproof gasket 3 is inserted into the first groove 13, the third protrusion 31 matches the first groove 13, the second protrusion 16 matches the second groove 33, the second protrusion 16 is used to prevent the first waterproof gasket 3 from falling off during transportation and use, the end of the first groove 13 is lower than the first protrusion 15, the first protrusion 15 is columnar, and a circular hole matching the first protrusion 15 is provided in the middle, and the first protrusion 15 passes through the circular hole when in use.

[0039] The connecting hole 14 is a threaded hole, which is used in conjunction with the screw 2 .

[0040] like Figure 7 , 12As shown, the screw 2 includes a screw tail 21, one end of which is provided with a screw head 22. The screw head 22 can be circular with a hexagonal groove embedded in it for easy screwing with a tool, or it can be hexagonal. A thread 23 is provided on the circumference of the screw tail 21, and the thread 23 is used in conjunction with the connecting hole 14. The screw head 22 can also be randomly provided with a fifth protrusion 24, which can increase the sealing performance of the second waterproof gasket 4.

[0041] The second waterproof gasket 4 is annular, the circumferential diameter of the second waterproof gasket 4 is larger than the circumferential diameter of the screw head 22, and a circular hole is provided in the center thereof for the screw tail 21 to pass through.

[0042] The self-clinching stud 1 has a circular hole 61 on the back cover 6, a first circular groove 62 on the circular hole 61, a second circular groove 63 above the first circular groove 62, a diameter of the first circular groove 62 is larger than a diameter of the circular hole 61, and a diameter of the second circular groove 63 is larger than a diameter of the first circular groove 62.

[0043] Working principle:

[0044] During processing, the pressure riveting stud 1 is directly riveted on the front cover 5 by pressure riveting process, the first waterproof gasket 3 is inserted into the first groove 13, the screw tail 21 of the screw 2 passes through the second waterproof gasket 4, and then passes through the back cover 6 to connect with the connecting hole 14. When the thread 23 is tightened with the connecting hole 14, the end face of the fourth protrusion 32 abuts against the bottom face of the second circular groove 63, the circumferential surface of the fourth protrusion 32 abuts against the circumferential surface of the second circular groove 63, the end face of the first protrusion 15 abuts against the bottom face of the first circular groove 62, and the circumferential surface of the first protrusion 15 abuts against the circumferential surface of the first circular groove 62, forming a sealing structure. After the screw 2 is tightened with the pressure riveting stud 1, the first waterproof gasket 3 and the second waterproof gasket 4 work together to achieve sealing and waterproofing at the screw of the back cover. In addition, the waterproof rubber strip between the front cover and the back cover is compressed, and the waterproofing between the lower box and the upper cover is guaranteed, thereby achieving the protection level IP65 of the whole machine.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A fastener with a waterproof gasket, characterized in that: The invention comprises a self-clinching stud (1), a screw (2), a first waterproof gasket (3) and a second waterproof gasket (4). The self-clinching stud (1) comprises a screw (11) and a nut (12). One end of the screw (11) is provided with a nut (12), and the other end of the screw (11) is provided with a first groove (13) and a first protrusion (15). The first protrusion (15) is provided with a connecting hole (14) inside. The first groove (13) is inserted into the first waterproof gasket (3). The self-clinching stud (1) is provided with a matching screw (2). The screw (2) passes through the second waterproof gasket (4) and is connected to the connecting hole (14).

2. The fastener with waterproof gasket according to claim 1, characterized in that: An annular second protrusion (16) is provided at the end of the first groove (13) along the circumference, and the end of the first groove (13) is lower than the first protrusion (15).

3. The fastener with waterproof gasket according to claim 2, characterized in that: The first protrusion (15) is columnar.

4. The fastener with waterproof gasket according to claim 3, characterized in that: The connecting hole (14) is a threaded hole.

5. The fastener with waterproof gasket according to claim 4, characterized in that: The first waterproof gasket (3) is annular, with an annular third protrusion (31) provided on the circumference of one end, and an annular fourth protrusion (32) provided on the circumference of the other end. The third protrusion (31) and the fourth protrusion (32) form a second groove (33), the third protrusion (31) matches the first groove (13), the second protrusion (16) matches the second groove (33), and a circular hole matching the first protrusion (15) is provided in the middle.

6. The fastener with waterproof gasket according to claim 5, characterized in that: The screw (2) comprises a screw tail (21) and a screw head (22), one end of the screw tail (21) is provided with the screw head (22), a thread (23) is provided on the circumference of the screw tail (21), and the thread (23) is connected to the connecting hole (14).

7. The fastener with waterproof gasket according to claim 6, characterized in that: The second waterproof gasket (4) is annular, the circumferential diameter of the second waterproof gasket (4) is larger than the circumferential diameter of the screw head (22), and a circular hole matching the screw tail (21) is provided in the center.

8. The fastener with waterproof gasket according to claim 7, characterized in that: The screw head (22) may also be randomly provided with a fifth protrusion (24).

9. The fastener with waterproof gasket according to claim 8, characterized in that: A circular hole (61) is provided on the rear cover (6) matched with the self-clinching stud (1), a first circular groove (62) is provided on the circular hole (61), a second circular groove (63) is provided above the first circular groove (62), the diameter of the first circular groove (62) is larger than the diameter of the circular hole (61), and the diameter of the second circular groove (63) is larger than the diameter of the first circular groove (62).

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