Circuit board positioning mechanism of interface expander

Abstract

The utility model discloses a circuit board positioning mechanism of an interface expander, which comprises a shell, a circuit board, an interface extension line, a front plug and a rear plug, the front end and the rear end of the shell are opened, the tail end of the interface extension line is provided with an injection molding sheath, the interface extension line is connected with the circuit board, and the circuit board is in sliding connection with the inner wall of the shell. The front end cap and the rear end cap are clamped at openings at the front end and the rear end of the shell and abut against the circuit board, the rear end cap is provided with a wire hole, the injection molding sheath is composed of a protection part and a limiting part, the inner wall of the rear end cap is provided with a clamping point I, and the limiting part is provided with a clamping point II matched with the clamping point I. When the limiting part is clamped with the rear end cap through the clamping point I and the clamping point II, the clamping point I and the clamping point II are matched with the clamping point II. The limiting part is located in the shell to block the wire hole, and the protection part is located outside the shell; compared with the prior art, the circuit board of the interface expander can be well positioned, displacement of the circuit board caused by assembly gaps is reduced, and therefore the requirement for the machining precision of assembly parts is lowered.

Description

Technical Field

[0001] This utility model pertains to interface extenders, specifically relating to the circuit board positioning mechanism of an interface extender. Background Technology

[0002] With the continuous advancement of information technology, electronic products are becoming increasingly popular among consumers and have become an indispensable part of people's lives and work. Due to the inherent characteristics of some electronic products, the number of data and audio / video transmission interfaces designed can no longer meet the daily needs of consumers. As a result, various interface expanders such as HUBs and docking stations have emerged, aiming to expand the number of product interfaces to meet diverse functional requirements.

[0003] The interface extender consists of a housing with openings at the front and rear ends, a circuit board, interfaces integrated on the circuit board, interface extension cables, a front plug, and a rear plug. The interface extension cable has an injection-molded sheath at its end and connects to the circuit board. The circuit board is slidably connected to the inner wall of the housing for vertical positioning. The front and rear plugs are engaged with the front and rear openings of the housing via locking points and slots, and abut against the circuit board for horizontal positioning. The interfaces on the circuit board correspond to the holes on both sides of the housing. The rear plug has a wire hole through which the interface extension cable extends outwards.

[0004] Currently, due to the manufacturing tolerances of individual parts (such as the front plug, rear plug, and housing), cumulative deviations will occur during the assembly process, which may result in a large gap after assembly. If this gap exceeds the allowable range for horizontal positioning of the circuit board, it will cause the circuit board to shift when pushing and pulling the extension line of the connector, causing the interface to misalign with the housing hole, which seriously affects the reliability of the connection. Utility Model Content

[0005] The purpose of this invention is to overcome the problem that the circuit board of the existing interface expander will have assembly gaps due to the superposition of component tolerances during positioning, and the circuit board position is prone to displacement. The invention provides a circuit board positioning mechanism that can better position the circuit board of the interface expander and reduce the circuit board displacement caused by assembly gaps.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: the circuit board positioning mechanism of the interface extender includes a housing with openings at the front and rear ends, a circuit board, an interface extension line, a front plug and a rear plug. The end of the interface extension line is provided with an injection-molded sheath. The interface extension line is connected to the circuit board. The circuit board is slidably connected to the inner wall of the housing. The front plug and the rear plug are engaged at the openings at the front and rear ends of the housing and abut against the circuit board. The rear plug is provided with a wire hole. The interface extension line extends outward through the wire hole. The injection-molded sheath consists of a protective part and a limiting part. The inner wall of the rear plug is provided with a locking point I. The limiting part is provided with a locking point II that cooperates with locking point I. When the limiting part is engaged with the rear plug through locking point I and locking point II, the limiting part is located inside the housing to block the wire hole, and the protective part is located outside the housing.

[0007] Optionally, the rear plug is provided with a stress notch.

[0008] Optionally, the limiting part is provided with a positioning notch, and the circuit board is positioned on the limiting part through the positioning notch.

[0009] The method of using this utility model is as follows: the interface extension line is soldered to the circuit board, the front plug is snapped and fixed to the housing, the circuit board is then inserted along the groove on the inner wall of the housing, the interface extension line is then passed through the wire hole of the rear plug, and the rear plug is snapped and fixed to the housing. During this process, the limiting part of the injection molded sheath is also snapped and fixed to the rear plug through point I and point II.

[0010] The principle of this invention: The circuit board is slidably connected to the inner wall of the housing. The front and rear plugs are engaged at the front and rear openings of the housing and abut against the circuit board, thus providing basic positioning for the circuit board. When a large assembly gap occurs due to the superposition of component tolerances, the limiting part of the injection-molded sheath seals the wire hole. When the interface extension line is pulled back, the rear plug is fixed to the housing, and the limiting part is blocked by the rear plug, restricting the backward displacement. Through the locking point I on the outer wall of the limiting part of the injection-molded sheath and the locking point II on the inner wall of the rear plug, the limiting part is engaged with the rear plug. When the interface extension line is pushed forward, the locking point I on the outer wall of the limiting part is blocked by the locking point II on the inner wall of the rear plug, restricting the forward displacement. This method reduces the impact of assembly gaps on circuit board positioning and avoids misalignment between the interface and the housing hole.

[0011] Compared with the prior art, the beneficial effects of this utility model are: this utility model can better position the circuit board of the interface expander, reduce the displacement of the circuit board caused by assembly gaps, and thus reduce the requirements for the machining accuracy of the assembly parts. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2This is a schematic diagram of the injection-molded sheath structure of this utility model;

[0014] Figure 3 This is a schematic diagram of the rear plug structure of this utility model;

[0015] The following are the detailed markings in the attached drawings: circuit board 1, interface extension line 2, rear plug 3, injection molded sheath 4, wire hole 5, protective part 41, limiting part 42, locking point I 6, locking point II 7, stress notch 8, positioning notch 9. Detailed Implementation

[0016] Example 1, in conjunction with the following Figure 1-3 Further description of this utility model: The circuit board positioning mechanism of the interface extender includes a housing with openings at the front and rear ends, a circuit board 1, an interface extension line 2, a front plug, and a rear plug 3. The housing is made of aluminum and is cuboid. The end of the interface extension line is provided with an injection-molded sheath 4, and the end of the interface extension line is welded to the circuit board. The inner wall of the housing has a groove, and the circuit board is slidably connected to the housing through the groove. The housing vertically positions the circuit board. The front plug and rear plug are quasi-square housings with openings at one end. The inner wall of the housing has a slot, and the outer wall of the front plug and rear plug has a locking point. The front plug and rear plug are engaged with the front and rear openings of the housing through the slot and locking point, and abut against the circuit board. The front plug and rear plug are aligned with the circuit board. For horizontal positioning, the rear plug has a wire hole 5. The interface extension line passes through the wire hole and extends outward. The injection-molded sheath consists of a protective part 41 and a limiting part 42. The protective part is a gradually shrinking cylinder, and the limiting part is a cuboid. The inner wall of the rear plug has a locking point I 6, and the limiting part has a locking point II 7 that cooperates with locking point I. Locking points I and II are elongated protrusions with mutually sliding inclined surfaces on their sides for easy locking. When the limiting part is locked with the rear plug through locking points I and II, the limiting part is located inside the housing to seal the wire hole, and the protective part is located outside the housing. That is, after the limiting part is locked with the rear plug, the top of the limiting part tightly abuts against the inner wall of the rear plug to seal the wire hole, and the bottom of locking point II of the limiting part tightly abuts against the top of locking point I of the rear plug.

[0017] To eliminate the stress when the locking points I and II are engaged, stress notches 8 are provided on both sides of the rear plug.

[0018] To facilitate the soldering of the interface extension cable to the circuit board and to vertically position the circuit board, a positioning notch 9 is provided in the limiting part, and the circuit board is positioned on the limiting part through the positioning notch.

[0019] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A circuit board positioning mechanism for an interface extender, comprising a housing with openings at the front and rear ends, a circuit board (1), an interface extension line (2), a front plug and a rear plug (3), wherein the end of the interface extension line is provided with an injection-molded sheath (4), the interface extension line is connected to the circuit board, the circuit board is slidably connected to the inner wall of the housing, the front plug and the rear plug are engaged at the openings at the front and rear ends of the housing and abut against the circuit board, the rear plug is provided with a wire hole (5), and the interface extension line extends outward through the wire hole, characterized in that: The injection-molded sheath consists of a protective part (41) and a limiting part (42). The inner wall of the rear plug is provided with a locking point I (6), and the limiting part is provided with a locking point II (7) that cooperates with the locking point I. When the limiting part is engaged with the rear plug through the locking point I and the locking point II, the limiting part is located inside the housing to seal the line hole, and the protective part is located outside the housing.

2. The circuit board positioning mechanism of the interface expander according to claim 1, characterized in that: The rear end cap is provided with a stress notch (8).

3. The circuit board positioning mechanism of the interface expander according to claim 1, characterized in that: The limiting part is provided with a positioning notch (9), and the circuit board is positioned on the limiting part through the positioning notch.

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