Pin riveting nut structure capable of preventing metal chips from falling

Abstract

The utility model relates to the technical field of pin terminals, and discloses a pin riveting nut structure capable of preventing metal chips from falling, which comprises a U-shaped pin and grooves arranged in the middles of two sides of the lower end of the U-shaped pin, a connecting assembly is embedded and fixedly mounted in the middle of the U-shaped pin, and a fixing assembly is in threaded connection in an inner cavity of the connecting assembly. The connecting assembly comprises a hollow cylinder and mounting threads arranged on the periphery of the inner wall of the hollow cylinder, a blind hole is formed in the bottom of the hollow cylinder, the blind hole is in a closed shape, and when an operator mounts the inserting stud, the inserting stud is mounted in an inner cavity of the hollow cylinder in a threaded mode and fixed to the mounting threads in a threaded mode; metal powder generated in the threaded connection process of an inserted stud and an installation thread can directly fall into an inner cavity of the blind hole to be collected, the blind hole is increased by changing the bottom structure of the hollow cylinder, and the problem that when the torsion of a plug pin type product is increased, the metal powder is not damaged is solved. And meanwhile, the problem that the PCB is damaged due to the fact that metal chips fall off in the locking process of the screws is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of pin terminals, in particular to a pin riveting nut structure that prevents metal chips from falling off. Background Art

[0002] PCB, also known as printed circuit board, can be mainly divided into rigid circuit board, flexible circuit board and rigid-flexible board. Copper clad laminate is the substrate material for making printed circuit board.

[0003] In patent document CN202120323328.2, a pin terminal that can be welded on a PCB board is proposed, including a terminal body and a square gasket. The square gasket is embedded inside the terminal body, and the side walls are fixedly connected to the left and right sides of the bottom of the terminal body. A groove is opened at the bottom of the side wall. This pin terminal that can be welded on a PCB board is provided with a square gasket, which is square and clamped inside the terminal body. The square gasket is connected to the terminal body as a whole through a limit column to ensure the use of torque. At the same time, the threads on the terminal body and the square gasket ensure the maximum use of torque. Compared with the prior art, it can reduce the situation of thread slippage caused by fewer thread turns.

[0004] At present, in order to increase the torque of the PCB pin products on the market, nuts are riveted underneath to achieve the required torque. However, since the rivet nuts are through holes, the metal powder in the screw thread is easily scraped out during the locking process of the screw, and the powder falls from the bottom hole onto the PCB board, which can easily cause a short circuit on the PCB board and burn and damage the PCB board.

[0005] Therefore, we propose a pin riveting nut structure that prevents metal chips from falling, so as to solve the above-mentioned problems. Utility Model Content

[0006] The utility model aims to provide a pin riveting nut structure that prevents metal chips from falling, so as to solve the problem that the above-mentioned background technology proposes that in order to increase the torque of the pin product, a rivet nut will be riveted underneath it to achieve the required torque. However, since the rivet nuts are all through holes, the metal chips in the screw thread are easily scraped out during the locking process of the screw, and the metal chips fall from the bottom hole onto the PCB board, which may cause the PCB board to be short-circuited, resulting in the burning and damage of the PCB board.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pin riveting nut structure for preventing metal chips from falling, comprising a U-shaped pin and grooves provided in the middle of both sides of the lower end of the U-shaped pin, a connecting component is embedded and fixedly installed in the middle of the U-shaped pin, and a fixing component is threadedly connected in the inner cavity of the connecting component;

[0008] The connecting component includes a hollow cylinder and mounting threads opened around the inner wall of the hollow cylinder. A blind hole is arranged at the bottom of the hollow cylinder. The blind hole is arranged in a closed state. The blind hole is arranged to collect fallen metal powder during the threaded connection between the fixing component and the hollow cylinder.

[0009] Preferably, a threaded circular groove is provided in the middle of the upper end of the U-shaped pin, and an anti-slip rubber layer is embedded around the upper end notch of the threaded circular groove.

[0010] Preferably, the anti-slip rubber layer is provided to improve the stability of the connection between the fixing component and the connecting component.

[0011] Preferably, the fixing assembly includes an insert stud and a round block integrally formed and fixed to one end of the insert stud.

[0012] Preferably, a hollow threaded ring is fixedly installed near the middle of one end of the round block, and a corresponding rubber ring is embedded around one end of the round block.

[0013] Preferably, the inserted stud is threadedly connected in the inner cavity of the hollow cylinder and is threadedly fixed with the mounting thread, and the hollow threaded ring is threadedly connected in the inner cavity of the threaded circular groove.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. When installing the inserted stud, the operator installs the inserted stud thread into the inner cavity of the hollow cylinder and fixes it with the installation thread. The metal powder generated during the threaded connection between the inserted stud and the installation thread will directly fall into the inner cavity of the blind hole for collection. By changing the bottom structure of the hollow cylinder, that is, adding a blind hole, the problem of increasing the torque of the pin-type products while preventing metal chips from falling during the locking process of the screws and causing damage to the PCB board is solved.

[0016] 2. After the middle part of the inserted stud is completely screwed into the inner cavity of the hollow cylinder, the hollow threaded ring will be screwed into the inner cavity of the threaded circular groove driven by the inserted stud for threaded fixation, thereby making the anti-slip rubber layer and the corresponding rubber ring fit together, thereby improving the stability of the inserted stud and the round block threaded connection in the inner cavity of the hollow cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the three-dimensional structure of the U-shaped pin and the fixing assembly of the utility model;

[0019] Figure 3 It is a side view of the connection assembly and the U-shaped pin connection of the utility model;

[0020] Figure 4 It is a side view of the connection between the connecting component and the fixing component of the utility model.

[0021] In the figure: 1, U-shaped pin; 11, threaded circular groove; 12, anti-slip rubber layer; 2, groove; 3, connecting component; 31, hollow cylinder; 32, mounting thread; 33, blind hole; 4, fixing component; 41, insert stud; 42, round block; 43, hollow thread ring; 44, corresponding rubber ring. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0023] Example 1

[0024] See also Figure 1-4 A pin riveting nut structure for preventing metal chips from falling includes a U-shaped pin 1 and grooves 2 opened in the middle of both sides of the lower end of the U-shaped pin 1, a connecting component 3 is embedded and fixedly installed in the middle of the U-shaped pin 1, and a fixing component 4 is threadedly connected in the inner cavity of the connecting component 3.

[0025] The connecting component 3 includes a hollow cylinder 31 and mounting threads 32 opened around the inner wall of the hollow cylinder 31. A blind hole 33 is provided at the bottom of the hollow cylinder 31. The blind hole 33 is set in a closed state. The setting of the blind hole 33 is used to collect fallen metal chips during the threaded connection process between the fixing component 4 and the hollow cylinder 31.

[0026] The fixing assembly 4 includes an insert stud 41 and a round block 42 integrally formed and fixed to one end of the insert stud 41 .

[0027] The inserted stud 41 is threadedly connected in the inner cavity of the hollow cylinder 31 and is threadedly fixed with the mounting thread 32 .

[0028] In this embodiment: when the operator installs the inserted stud 41, the inserted stud 41 is threadedly installed into the inner cavity of the hollow cylinder 31 and threadedly fixed with the installation thread 32. The metal powder generated during the threaded connection between the inserted stud 41 and the installation thread 32 will directly fall into the inner cavity of the blind hole 33 for collection. By changing the bottom structure of the hollow cylinder 31, that is, adding the blind hole 33, the problem of increasing the torque of the pin-type products while preventing metal chips from falling during the locking process of the screw to cause damage to the PCB board is solved.

[0029] Example 2

[0030] This embodiment is an improvement made on the basis of embodiment 1. For details, please refer to Figure 2 A threaded circular groove 11 is provided in the middle of the upper end of the U-shaped pin 1, and an anti-skid rubber layer 12 is embedded around the upper end notch of the threaded circular groove 11. The setting of the anti-skid rubber layer 12 is used to improve the stability of the connection between the fixing component 4 and the connecting component 3.

[0031] A hollow threaded ring 43 is fixedly installed near the middle of one end of the round block 42, and a corresponding rubber ring 44 is embedded around one end of the round block 42. The hollow threaded ring 43 is threadedly connected in the inner cavity of the threaded circular groove 11. The anti-slip rubber layer 12 and the corresponding rubber ring 44 are arranged to increase the friction between the inserted stud 41 and the U-shaped pin 1.

[0032] In this embodiment: after the middle part of the inserted stud 41 is completely screwed into the inner cavity of the hollow cylinder 31, the hollow threaded ring 43 will be screwed into the inner cavity of the threaded groove 11 driven by the inserted stud 41 to be threadedly fixed, so that the anti-slip rubber layer 12 and the corresponding rubber ring 44 are fit together, thereby improving the stability of the threaded connection between the inserted stud 41 and the round block 42 in the inner cavity of the hollow cylinder 31.

[0033] Working principle: When the operator installs the inserted stud 41, the inserted stud 41 is threadedly installed into the inner cavity of the hollow cylinder 31 and threadedly fixed with the installation thread 32. The metal powder generated during the threaded connection between the inserted stud 41 and the installation thread 32 will directly fall into the inner cavity of the blind hole 33 for collection. After the middle part of the inserted stud 41 is completely screwed into the inner cavity of the hollow cylinder 31, the hollow thread ring 43 will be screwed into the inner cavity of the threaded circular groove 11 driven by the inserted stud 41 for threaded fixation, thereby making the anti-slip rubber layer 12 and the corresponding rubber ring 44 fit together.

[0034] It should be noted that the PCB board and the pins are equipped with core components that can support the normal operation of the PCB board and the pins. These core components are not an innovative part of the present application document, but are common knowledge. Those skilled in the art are capable of thinking of the specific structure and structural layout settings.

[0035] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pin riveting nut structure for preventing metal chips from falling, comprising a U-shaped pin (1) and grooves (2) provided in the middle of both sides of the lower end of the U-shaped pin (1), characterized in that: A connecting component (3) is embedded and fixedly installed in the middle of the U-shaped pin (1), and a fixing component (4) is threadedly connected in the inner cavity of the connecting component (3); The connection component (3) comprises a hollow cylinder (31) and mounting threads (32) provided around the inner wall of the hollow cylinder (31). A blind hole (33) is provided at the bottom of the hollow cylinder (31). The blind hole (33) is arranged in a closed state. The blind hole (33) is arranged to collect metal powder chips that fall during the threaded connection process between the fixing component (4) and the hollow cylinder (31).

2. A pin riveting nut structure for preventing metal chips from falling according to claim 1, characterized in that: A threaded circular groove (11) is provided in the middle of the upper end of the U-shaped plug pin (1), and an anti-slip rubber layer (12) is embedded around the upper notch of the threaded circular groove (11).

3. The pin riveting nut structure for preventing metal chips from falling off according to claim 2, characterized in that: The anti-slip rubber layer (12) is provided to improve the stability of the connection between the fixing component (4) and the connecting component (3).

4. The pin riveting nut structure for preventing metal chips from falling off according to claim 1, characterized in that: The fixing assembly (4) comprises an insertion stud (41) and a round block (42) integrally formed and fixed to one end of the insertion stud (41).

5. The pin riveting nut structure for preventing metal chips from falling off according to claim 4, characterized in that: A hollow threaded ring (43) is fixedly mounted near the middle of one end of the round block (42), and a corresponding rubber ring (44) is embedded around one end of the round block (42).

6. A pin riveting nut structure for preventing metal chips from falling off according to claim 5, characterized in that: The inserted stud (41) is threadedly connected in the inner cavity of the hollow cylinder (31) and is threadedly fixed with the mounting thread (32), and the hollow thread ring (43) is threadedly connected in the inner cavity of the threaded circular groove (11).

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