Eccentric locking drainage nut

Abstract

The utility model relates to the technical field of fasteners, in particular to an eccentric locking drainage nut. According to the technical scheme, the device comprises a hexagonal main body fastening connecting base, a first cylindrical sealing combination groove is formed in the upper end of the main body fastening connecting base, and a second conical drainage safety groove is formed in the lower end of the main body fastening connecting base; an integrally-formed inverted-cone-shaped combined supporting and stabilizing column is arranged in the center of the upper end face of the second drainage safety groove, an integrally-formed cylindrical positioning and matching connecting column is arranged at the lower end of the combined supporting and stabilizing column, and the lower end of the positioning and matching connecting column exceeds the lower end face of the main body fastening and connecting base. The connecting structure has the advantages that on one hand, the sealing performance of the matched connecting position can be guaranteed, on the other hand, the drainage effect of the connecting position can be achieved, and the structural strength of the inner middle position enables the overall structural safety to be better through the reinforcing structure.

Description

Technical Field

[0001] The utility model relates to the technical field of fasteners, in particular to an eccentric locking drainage nut. Background Art

[0002] Nuts are important fasteners for fastening mechanical components. There is a type of eccentric nut among fastening nuts. When in use, the fastening holes of different central axes are tightened to achieve an anti-loosening matching effect. The fastening position of the existing eccentric fastening nut has no drainage function when in use. The interior is easily affected by rainwater during use, and the durability during use is relatively poor. For application environments where the connection position is often in contact with fluid substances such as water, the safety during use is relatively poor. Utility Model Content

[0003] The purpose of the utility model is to provide an eccentric locking drainage nut, which arranges two sets of matching grooves on the main structure of the eccentric nut, which can ensure the sealing of the matching connection position on the one hand, and realize the drainage function of the connection position on the other hand. The structural strength of the internal middle position is enhanced by the reinforcement structure to make the overall structural safety better. During installation, the positioning structure can realize the quick tightening matching connection, the overall installation is more convenient, and the safety and durability during use are more reliable.

[0004] The technical solution of the utility model is as follows:

[0005] The lock threaded hole that is provided with of the main body fastening connection seat is provided with the first sealing combination groove of the main body fastening connection seat, and the lower end of the main body fastening connection seat is provided with the second conical drainage safety groove, and the center position of the upper end surface of the second drainage safety groove is provided with an integrally formed inverted conical combination support stabilization column, and the lower end of the combination support stabilization column is provided with an integrally formed cylindrical positioning matching connection column, and the lower end of the positioning matching connection column exceeds the lower end surface of the main body fastening connection seat, and the lower end of the positioning matching connection column is provided with a main body fastening connection threaded hole that completely passes through the overall upper end, the center axis of the main body fastening connection threaded hole does not coincide with the center axis of the main body fastening connection seat, and the upper end of the second drainage safety groove is located between the combination support stabilization column and the cylindrical surface inside the second drainage safety groove, and is provided with a main body drainage delivery hole that communicates with the first sealing combination groove.

[0006] Furthermore, a matching guide structure is provided at the outer edge of the lower end of the positioning matching connecting column.

[0007] Furthermore, the main body drainage delivery hole is a cylindrical structure, and the diameter of the main body drainage delivery hole is the same as the distance between the combined support stabilization column and the cylindrical surface inside the second drainage safety groove.

[0008] Furthermore, the diameter of the positioning and fitting connecting column is the same as the diameter of the lower end surface of the combined supporting and stabilizing column.

[0009] Furthermore, a drainage guide matching groove is provided at the upper edge of the drainage delivery hole of the main body.

[0010] Beneficial effects of the utility model:

[0011] The utility model provides two sets of matching grooves on the main structure of the eccentric nut, which can ensure the sealing of the matching connection position on the one hand, and realize the drainage function of the connection position on the other hand. The structural strength of the internal middle position is enhanced by the reinforcement structure, so that the overall structural safety is better. During installation, the positioning structure can realize the fast and tight matching connection, the overall installation is more convenient, and the safety and durability during use are more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0013] Figure 2 It is a front schematic diagram of the utility model;

[0014] Figure 3 It is a schematic diagram of the left side of the utility model;

[0015] Figure 4 It is a schematic diagram of the right side of the utility model;

[0016] Figure 5 It is a top view schematic diagram of the utility model;

[0017] Figure 6 This is a bottom view schematic diagram of the present utility model;

[0018] Figure 7 This is a schematic diagram of the three-dimensional structure of the utility model in the second direction;

[0019] In the figure: 1. Main body fastening connection seat, 2. First sealing combination groove, 3. Second drainage safety groove, 4. Combined support stabilization column, 5. Positioning and matching connection column, 6. Main body fastening connection threaded hole, 7. Main body drainage delivery hole. DETAILED DESCRIPTION

[0020] like Figures 1 to 7The figure shows an eccentric locking drain nut. It includes a hexagonal main fastening connection base 1. The upper end of the main fastening connection base 1 is provided with a cylindrical first sealing combination groove 2, which can be mated with the upper fastening mating assembly. The lower end of the main fastening connection base 1 is provided with a conical second drainage safety groove 3, which provides a safe drainage space during use. The center of the upper end surface of the second drainage safety groove 3 is provided with an integrally formed inverted conical composite support and stabilization column 4 to ensure the internal structural strength. The lower end of the composite support and stabilization column 4 is provided with an integrally formed cylindrical positioning and mating connection column 5, which provides a fixed fit for the lower end installation and also reinforces the structural strength at the center. The lower end of the positioning and mating connection column 5 extends beyond the lower end surface of the main fastening connection base 1 and can be inserted into the mating connection position during installation, thereby enhancing the connection strength and increasing the mating area of ​​the threaded mating position. The lower end of the positioning and mating connection column 5 is provided with a main fastening threaded hole 6 that completely passes through the upper end of the main fastening connection column 5, through which the main threaded connection is achieved. The central axis of the main body fastening connection threaded hole 6 does not coincide with the central axis of the main body fastening connection seat 1, realizing an eccentric combination fastening connection. The upper end of the second drainage safety groove 3 is located between the combined support stabilization column 4 and the inner cylindrical surface of the second drainage safety groove 3, and is provided with a main body drainage delivery hole 7 that is in communication with the first sealing combination groove 2, which can realize a fast and safe drainage operation around the fastening position during use. It is provided with two sets of matching grooves on the main structure of the eccentric nut. On the one hand, it can ensure the sealing of the matching connection position, and on the other hand, it can realize the function of drainage at the connection position. The structural strength of the internal middle position is reinforced by the reinforcement structure to make the overall structural safety better. During installation, the positioning structure can realize a fast and fast matching connection. The overall installation is more convenient, and the safety and durability during use are more reliable.

[0021] Preferably, a matching guide structure is provided at the outer edge of the lower end of the positioning matching connecting column 5, which can play a better matching guide role during the overall preliminary matching, ensuring more convenient operation during matching and higher assembly efficiency.

[0022] Preferably, the main drainage delivery hole 7 is a cylindrical structure, and the diameter of the main drainage delivery hole 7 is the same as the distance between the combined support stabilization column 4 and the inner cylindrical surface of the second drainage safety groove 3, which is more convenient during production and processing, and can ensure better drainage fluency during use.

[0023] Preferably, the diameter of the positioning and fitting connecting column 5 is the same as the diameter of the lower end surface of the combined supporting and stabilizing column 4, so that the flatness of the connection position is better, the production and processing are more convenient, and the structural stability is more reliable.

[0024] Preferably, a drainage guide matching groove is provided at the upper edge of the main body drainage delivery hole 7 to improve the matching smoothness during drainage and further improve the efficiency of the overall drainage process.

[0025] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements or substitutions can be made without departing from the principles described in the present invention. These improvements or substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. An eccentric locking drain nut, characterized in that: The invention comprises a hexagonal main body fastening connection seat (1), wherein the upper end of the main body fastening connection seat (1) is provided with a cylindrical first sealing combination groove (2), the lower end of the main body fastening connection seat (1) is provided with a conical second drainage safety groove (3), the center position of the upper end surface of the second drainage safety groove (3) is provided with an integrally formed inverted conical combination support stabilizing column (4), the lower end of the combination support stabilizing column (4) is provided with an integrally formed cylindrical positioning matching connection column (5), the lower end of the positioning matching connection column (5) exceeds the lower end surface of the main body fastening connection seat (1), the lower end of the positioning matching connection column (5) is provided with a main body fastening connection threaded hole (6) that completely penetrates the upper end of the whole, the central axis of the main body fastening connection threaded hole (6) does not coincide with the central axis of the main body fastening connection seat (1), and the upper end of the second drainage safety groove (3) is located between the combination support stabilizing column (4) and the inner cylindrical surface of the second drainage safety groove (3) and is provided with a main body drainage delivery hole (7) that is communicated with the first sealing combination groove (2).

2. The eccentric locking drain nut according to claim 1, characterized in that: A matching guide structure is provided at the outer edge of the lower end of the positioning matching connecting column (5).

3. The eccentric locking drain nut according to claim 1, characterized in that: The main body drainage delivery hole (7) is a cylindrical structure, and the diameter of the main body drainage delivery hole (7) is the same as the distance between the combined support stabilizing column (4) and the inner cylindrical surface of the second drainage safety groove (3).

4. The eccentric locking drain nut according to claim 1, characterized in that: The diameter of the positioning and matching connecting column (5) is the same as the diameter of the lower end surface of the combined supporting and stabilizing column (4).

5. The eccentric locking drain nut according to claim 1, characterized in that: A drainage guide matching groove is provided at the upper edge of the main body drainage delivery hole (7).

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