Vehicle gauge secondary lock connector applied to single-sided substrate

Abstract

The utility model discloses a vehicle gauge secondary lock connector applied to a single-sided substrate, which comprises a shell, a terminal and a positioning auxiliary piece, and a bending part is arranged at the front end of an inserting part of the terminal; the shell is provided with a jack matched with the positioning auxiliary part, and the positioning auxiliary part is inserted into the shell from the jack and extends into the terminal hole to abut against the terminal so as to pre-tighten the terminal; a buckling pin and a clamping pin are arranged on the inserting part, an abutting part is arranged at the position, corresponding to the terminal, in the terminal hole, the abutting part abuts against the buckling pin and presses the terminal, and the positioning auxiliary part clamps the clamping pin and abuts against the terminal after being inserted into the shell. Therefore, the plate thickness tolerance compensation is realized through the self-adaptive deformation characteristic of the bent terminal, the fitting degree with a circuit board can be effectively improved, and the stability of electric connection can be ensured; at least two electric brush parts are formed on the bent part, so that the damage of a vibration environment to the terminal can be reduced; and meanwhile, the terminal is limited and tightened by matching the positioning auxiliary piece with the abutting part and the tightening groove of the shell, so that the terminal can reach an extremely stable state.

Description

Technical Field

[0001] This utility model relates to the field of electrical connection device technology, and in particular to an automotive-grade secondary lock connector applied to a single-sided aluminum substrate. Background Technology

[0002] Connectors are crucial components for achieving electrical connections, primarily transmitting power or electrical signals. When connecting connectors to PCBs, clip-on terminal connectors are generally used. To accommodate PCBs of varying thicknesses, the terminals are typically modified to bendable types for electrical connection (this is described in the documentation, and bent terminals are fundamental; without them, there's no need to increase the housing's capacity). However, when terminals are bent, the housing's capacity must increase accordingly, inevitably leading to insufficient pre-tightening of the terminals. This is especially problematic when these terminals are used in automobiles, where significant vibrations and bumps can cause terminals to loosen, connectors to detach, resulting in poor contact and affecting normal operation. While auxiliary positioning devices exist, current solutions struggle to maintain absolute terminal stability even with increased housing space, resulting in inadequate positioning. Utility Model Content

[0003] This invention addresses the shortcomings of existing technologies, such as the increased pre-tightness of terminals due to the increased accommodating space caused by the use of bent terminals. It provides a simpler, more rationally designed automotive-grade secondary locking connector for single-sided substrates, which offers better pre-tightness and higher stability.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: an automotive-grade secondary lock connector for single-sided substrates, comprising a housing and terminals, wherein the housing has terminal holes for mounting terminals, and the front end of the housing has a slot for mounting circuit boards; the front end of the terminal's insertion part has a bent part, and after the circuit board is inserted into the slot, the terminal contacts the circuit board through its bent part to achieve electrical connection; it also includes a positioning auxiliary component, wherein the housing is provided with a socket hole that matches the positioning auxiliary component, the positioning auxiliary component is inserted into the housing through the socket hole and extends into the terminal hole to press against the terminal to achieve pre-tightening of the terminal; the insertion part of the terminal is provided with a retaining foot and a locking foot respectively, and the terminal hole of the housing is provided with an abutment part corresponding to the position of the terminal, the abutment part abuts against the retaining foot and presses against the terminal, and the positioning auxiliary component, after being inserted into the housing, locks the locking foot and presses against the terminal.

[0005] The buckle protrudes upwards from the plug portion of the terminal to form an elastic structure, and the abutment portion protrudes into the terminal hole. After the terminal is inserted into the terminal hole, the abutment portion abuts against the tail end of the buckle and against the top surface of the plug portion. The locking foot protrudes downwards from the plug portion of the terminal. The insertion hole for inserting the positioning auxiliary component is located at the bottom of the housing. After the positioning auxiliary component is inserted into the housing from the bottom surface, it is locked behind the locking foot and abuts against the bottom surface of the plug portion.

[0006] Furthermore, a notch is provided in the bent portion at the front end of the terminal, through which the bent portion is divided into at least two bent brush portions, the ends of which are bent to the bottom surface of the plug portion.

[0007] Furthermore, the brush portion is bent into a circular structure, and the end of the brush portion is bent to abut against the bottom surface of the insertion portion. The position where the bottom surface of the brush portion meets the circuit board is set as a planar structure, and the circuit board and the planar structure of the brush portion abut against each other.

[0008] Furthermore, the side of the abutment portion facing the terminal insertion is set as an inclined surface. When the terminal is inserted into the terminal hole, the latch passes over the abutment portion via the inclined surface and is then held in place by the abutment portion.

[0009] Furthermore, the two sides of the plug portion protrude to the sides relative to the brush portion, and a tightening groove is provided on the wall of the terminal hole opposite to the plug portion. After the terminal is inserted into the terminal hole, the two sides of the plug portion are inserted into the tightening groove, so that the terminal is tightened in the housing and the lateral stability is ensured.

[0010] Furthermore, a raised positioning part is provided on the top of the positioning auxiliary component, with one positioning part corresponding to each terminal. The top of the positioning part abuts against the insertion part of the terminal to ensure the vertical stability of the terminal. The top of the main body of the positioning auxiliary component is lower than the positioning part to form a clearance structure for the wiring part of the rear section of the terminal, so as to avoid interference with the wiring part of the terminal. Several buckles are provided on the side wall of the main body of the positioning auxiliary component, and the housing is provided with a buckle groove that matches the buckle. After the positioning auxiliary component is inserted into the housing, it is fixed by the buckle and the buckle groove.

[0011] Preferably, each terminal includes 2-4 brush sections, each brush section being separated into a flush and parallel structure by a central notch.

[0012] Preferably, the latch is an inclined spring arm structure formed by stamping from the plug part of the terminal, and the latch, plug part and brush part are an integral structure.

[0013] The locking pin is formed by stamping from the plug part of the terminal, and the locking pin is perpendicular to the plug part and is an integral structure.

[0014] First, this invention employs a bent terminal with adaptive deformation characteristics to compensate for board thickness tolerances, effectively improving the fit with the circuit board and ensuring the stability of the electrical connection. Second, the bent portion of the terminal forms at least two brush sections, which reduces damage to the terminal from vibration and prevents damage and breakage from instantly affecting the electrical connection with the circuit board, giving the user more time to react. Third, the positioning auxiliary component positions and tightens the terminal, and the abutment part and tightening groove of the housing further restrict and tighten the terminal, ensuring that the terminal remains extremely stable even in the large space within the housing. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a longitudinal sectional view of the present invention;

[0017] Figure 3 This is an exploded structural diagram of the present invention;

[0018] Figure 4 This is a structural diagram of the present invention after the circuit board has been removed;

[0019] Figure 5 This is a structural diagram of the present invention from another angle after the circuit board has been removed;

[0020] Figure 6 A cross-sectional view of the housing and positioning auxiliary components in their assembled state;

[0021] Figure 7 This is a structural diagram of the terminal;

[0022] Figure 8 This is a structural diagram of the positioning auxiliary component.

[0023] In the diagram, 1 is the housing, 11 is the terminal hole, 12 is the insertion slot, 13 is the abutment part, 14 is the bevel, 15 is the tightening groove, 2 is the terminal, 21 is the insertion part, 22 is the wiring part, 23 is the brush part, 24 is the retaining foot, 25 is the locking foot, 3 is the positioning auxiliary part, 31 is the positioning part, 32 is the buckle, and 4 is the circuit board. Detailed Implementation

[0024] In this embodiment, refer to Figures 1-8A type of automotive-grade secondary lock connector for single-sided substrates includes a housing 1, terminals 2, and positioning aids 3. Terminals 2 include a plug-in portion 21 and a wiring portion 22. The housing 1 has a terminal hole 11 for mounting terminals 2, and the front end of the housing 1 has a slot 12 for mounting a circuit board 4. The front end of the plug-in portion 21 of terminals 2 has a bent portion. After the circuit board 4 is inserted into the slot 12, terminals 2 make contact with the circuit board 4 through their bent portion to achieve electrical connection. The housing 1 is provided with a socket that matches the positioning aids 3. The positioning aids 3 are inserted into the housing 1 through the socket and extend into the terminal hole 11 to press against the terminals 2 to achieve pre-tightening of terminals 2. The bent portion at the front end of terminals 2 is provided with a notch, which divides the bent portion into two bent brush portions 23 (or multiple brush portions, such as 3, 4 or more, depending on actual needs). The ends of the brush portions 23 are bent to the bottom surface of the plug-in portion 21.

[0025] A resilient latch 24 protruding upwards is provided on the insertion portion 21 of terminal 2. An abutment portion 13 is provided on the top of terminal hole 11, protruding into terminal hole 11. After terminal 2 is inserted into terminal hole 11, the abutment portion 13 abuts against the tail end of latch 24 and against the top surface of insertion portion 21. This achieves pre-tightening of the upper part of terminal 2 and forms the first anti-retraction structure.

[0026] A locking foot 25 protruding towards the bottom surface is provided on the insertion part 21 of terminal 2. The insertion hole for inserting the positioning auxiliary member 3 is provided at the bottom of the housing 1. After the positioning auxiliary member 3 is inserted into the housing 1 from the bottom surface, it is locked behind the locking foot 25 and abuts against the bottom surface of the insertion part 21. This can achieve pre-tightening of the area below terminal 2 and form a second anti-retraction structure.

[0027] The brush portion 23 is bent into a circular structure, similar to an O-shape. The end of the brush portion 23 is bent to abut against the bottom surface of the insertion portion 21. After the circuit board 4 is inserted, it exerts a squeezing force on the brush portion 23. This squeezing force, in turn, causes the insertion portion 21 to exert a counter-pushing force on the brush portion 23, thereby making the brush portion 23 and the circuit board 4 more tightly connected. The position where the bottom surface of the brush portion 23 meets the circuit board 4 is designed as a planar structure. After the circuit board 4 is inserted, it abuts against the planar structure of the brush portion 23. This increases the contact area and further improves the reliability of the electrical connection.

[0028] The side of the abutment 13 facing the terminal 2 is set as an inclined surface 14. When the terminal 2 is inserted into the terminal hole 11, the buckle 24 passes over the abutment 13 via the inclined surface 14 and is held by the abutment 13. This reduces resistance and facilitates the insertion of the buckle 24.

[0029] The two sides of the plug-in part 21 protrude to the sides relative to the brush part 23. A tightening groove 15 is provided on the wall of the terminal hole 11 opposite to the plug-in part 21. After the terminal 2 is inserted into the terminal hole 11, the two sides of the plug-in part 21 are inserted into the tightening groove 15, so that the terminal 2 is tightened in the housing 1, ensuring the stability of the left and right sides.

[0030] A protruding positioning part 31 is provided on the top of the positioning auxiliary part 3, and each terminal 2 corresponds to a positioning part 31. The top of the positioning part 31 abuts against the insertion part 21 of the corresponding terminal 2 to ensure the vertical stability of the terminal 2. The top of the main body of the positioning auxiliary part 3 is lower than the positioning part 31 to form a clearance structure for the wiring part 22 of the terminal 2, so as to avoid interference with the wiring part 22 of the terminal 2. Several buckles 32 are provided on the side wall of the main body of the positioning auxiliary part 3, and the housing 1 is provided with a buckle groove that matches the buckle 32. After the positioning auxiliary part 3 is inserted into the housing 1, the positioning auxiliary part 3 is fixed by the buckle 32 fastening to the buckle groove.

[0031] Each brush section 23 is separated into a flat and parallel structure by a notch in the middle.

[0032] The latch 24 is an inclined spring arm structure formed by upward stamping from the plug part 21 of the terminal 2. The latch 24, the plug part 21 and the brush part 23 are an integral structure.

[0033] The clip 25 is formed by downward stamping from the insertion part 21 of the terminal 2. The clip 25 is perpendicular to the insertion part 21 and is an integral structure.

[0034] It should be noted that in this utility model, terms such as front, back, left, right, top, and bottom, which refer to directions or positions, are used in accordance with the principles of directional or positional designation. Figures 1-3 From the perspective of the view, the left side is the front, the right side is the back, the top is the top, and the bottom is the bottom. When the angle of the view changes, the corresponding direction and position may also change.

[0035] The present invention has been described in detail above. The above description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made in accordance with the scope of this application should still fall within the scope of the present invention.

Claims

1. An automotive-grade secondary lock connector for a single-sided substrate, comprising a housing and terminals, wherein the housing has terminal holes for mounting terminals, and the front end of the housing has a slot for mounting a circuit board; the front end of the terminal's insertion portion has a bent portion, and after the circuit board is inserted into the slot, the terminal contacts the circuit board through its bent portion to achieve electrical connection, characterized in that: It also includes a positioning auxiliary component. The housing is provided with a socket that matches the positioning auxiliary component. The positioning auxiliary component is inserted into the housing through the socket and extends into the terminal hole to press against the terminal to achieve pre-tightening of the terminal. The terminal insertion part is provided with a retaining foot and a locking foot respectively. The terminal hole of the housing is provided with an abutment part corresponding to the position of the terminal. The abutment part abuts against the retaining foot and presses against the terminal. After the positioning auxiliary component is inserted into the housing, it locks the locking foot and presses against the terminal.

2. The automotive-grade secondary lock connector for a single-sided substrate according to claim 1, characterized in that: The buckle protrudes upwards from the plug portion of the terminal to form an elastic structure, and the abutment portion protrudes into the terminal hole. After the terminal is inserted into the terminal hole, the abutment portion abuts against the tail end of the buckle and against the top surface of the plug portion. The locking foot protrudes downwards from the plug portion of the terminal. The insertion hole for inserting the positioning auxiliary component is located at the bottom of the housing. After the positioning auxiliary component is inserted into the housing from the bottom surface, it is locked behind the locking foot and abuts against the bottom surface of the plug portion.

3. The automotive-grade secondary lock connector for a single-sided substrate according to claim 1, characterized in that: A notch is provided in the bent portion at the front end of the terminal, and the bent portion is divided into at least two bent brush portions through the notch, the ends of the brush portions being bent to the bottom surface of the plug portion.

4. The automotive-grade secondary lock connector for a single-sided substrate according to claim 3, characterized in that: The brush section is bent into a circular structure, and the end of the brush section is bent to abut against the bottom surface of the insertion section. The bottom surface of the brush section is set as a planar structure at the position where it connects with the circuit board, and the circuit board and the planar structure of the brush section abut against each other.

5. The automotive-grade secondary lock connector for a single-sided substrate according to claim 2, characterized in that: The side of the abutment facing the terminal insertion is set as an inclined surface. When the terminal is inserted into the terminal hole, the latch passes over the abutment via the inclined surface and is held in place by the abutment.

6. The automotive-grade secondary lock connector for a single-sided substrate according to claim 3, characterized in that: The two sides of the plug protrude outwards relative to the brush part. A tightening groove is provided on the wall of the terminal hole opposite to the plug. After the terminal is inserted into the terminal hole, the two sides of the plug are inserted into the tightening groove.

7. The automotive-grade secondary lock connector for a single-sided substrate according to claim 2, characterized in that: A raised positioning part is provided on the top of the positioning auxiliary component, with one positioning part corresponding to each terminal. The top of the positioning part abuts against the insertion part of the terminal. The top of the main body of the positioning auxiliary component is lower than the positioning part to form a clearance structure for the wiring part of the rear section of the terminal. Several buckles are provided on the side wall of the main body of the positioning auxiliary component, and a buckle groove matching the buckle is provided in the housing. After the positioning auxiliary component is inserted into the housing, it is fixed by the buckle and the buckle groove.

8. The automotive-grade secondary lock connector for a single-sided substrate according to claim 3, characterized in that: Each terminal includes 2-4 brush sections, which are separated by a central notch to form a flush and parallel structure.

9. The automotive-grade secondary lock connector for a single-sided substrate according to claim 2, characterized in that: The latch is an inclined spring arm structure formed by stamping from the plug part of the terminal, and the latch, plug part and brush part are an integral structure.

10. The automotive-grade secondary lock connector for a single-sided substrate according to claim 2, characterized in that: The latch is formed by stamping from the plug part of the terminal, and the latch is perpendicular to the plug part and is an integral structure.

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