Sinking plate type connector

Abstract

The utility model belongs to the connector field, and specifically relates to a sinking plate type connector comprising a rubber shell, a plurality of terminal sheets and two soldering lugs, the rubber shell is detachably connected with a cover plate covering the plurality of terminal sheets, the cover plate is provided with a step portion used for placing a printed circuit board, and the step portion is provided with a plurality of soldering lugs. One end of each terminal sheet is provided with a welding part which extends out of the cover plate and is used for connecting a printed circuit board, the two welding sheets are symmetrically arranged on two sides of the rubber shell, and each welding sheet is provided with a welding foot part which extends out of the rubber shell and is used for connecting the printed circuit board; the cover plate for placing the printed circuit board is additionally arranged on the rubber shell, so that the connector can sink into the open slot of the printed circuit board, the overall height is reduced, more compact circuit layout is realized, and the use requirement of limited space is met. The cover plate can increase the creepage distance between the terminal sheet and the printed circuit board, so that the insulation performance is better; and the plurality of terminal sheets and the two soldering lugs are respectively welded on the printed circuit board, so that the connection reliability can be effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of connectors, and in particular relates to a sunken plate type connector. Background Art

[0002] A connector is a device that connects two active components and transmits current or signals. Electrical connectors are primarily used in transportation, communications, networking, IT, healthcare, and home appliances. The rapid technological advancements and market growth in these areas are driving the development of connector technology. To date, connectors have evolved into a series of specialized products with a comprehensive range of product types, diverse specifications, diverse structural types, specialized product lines, distinct industry characteristics, and a standardized system of standards.

[0003] When existing connectors are soldered to printed circuit boards, due to space limitations, the connectors cannot be "sunk" into pre-opened holes in the printed circuit boards, resulting in an overall height that is too high, unreliable connections, an inability to achieve a more compact circuit layout, and an inability to meet user needs, causing inconvenience to users. Therefore, it is necessary to improve the existing connectors to meet these needs. Summary of the Invention

[0004] The purpose of the utility model is to overcome the shortcomings and deficiencies of the prior art and to provide a sunken plate type connector which occupies a small space and has reliable connection.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is as follows: a sunken plate connector, comprising a plastic shell and a plurality of terminal pieces and two welding pieces respectively arranged in the plastic shell, the plastic shell being detachably connected to a cover plate covering the plurality of terminal pieces, the cover plate having a step portion for placing a printed circuit board, one end of each of the terminal pieces having a welding portion extending outside the cover plate and connected to the printed circuit board, the two welding pieces being symmetrically arranged on both sides of the plastic shell, each of the welding pieces having a welding foot portion extending outside the plastic shell and connected to the printed circuit board.

[0006] In some embodiments, the soldering portion has a soldering plane connected to the printed circuit board, the solder foot portion has a contact plane connected to the printed circuit board, and the soldering plane and the contact plane are in the same horizontal plane.

[0007] In some embodiments, the other end of each terminal piece has a first contact arm and a second contact arm extending into the plug-in cavity of the plastic shell, and an plug-in space is formed between the first contact arm and the second contact arm.

[0008] In some embodiments, the tail portion of the first contact arm has an inserting guide arc surface.

[0009] In some embodiments, the tail of the second contact arm has a contact protrusion in the shape of an arc surface, and the tail of the contact protrusion has an insertion guide inclined surface.

[0010] In some embodiments, a locking cavity is provided in the plastic shell below the corresponding plug-in cavity, and a locking block is provided in the locking cavity.

[0011] In some embodiments, the cover plate has two symmetrically distributed L-shaped sliders, the plastic shell is provided with two sliding grooves that engage with the two sliders, the sliding grooves are provided with locking holes corresponding to their openings, and the slider is provided with a locking block that engages in the locking holes.

[0012] In some embodiments, a guide slope is provided at the opening of the slide groove for guiding the insertion of the slider, and the slider has an insertion slope that matches the guide slope.

[0013] In some embodiments, a plurality of limiting grooves are provided on one side of the step portion for the welding portions of a plurality of terminal pieces to pass through, and each of the terminal pieces is provided with an anti-dropping insert inserted into the plastic shell.

[0014] In some embodiments, the plastic shell has a supporting piece for supporting the solder legs of the two solder pieces.

[0015] The beneficial effects of this utility model are as follows: By adding a cover plate to the plastic housing for placing the printed circuit board, the connector can be "sunk" into the slot of the printed circuit board, reducing the overall height and achieving a more compact circuit layout, meeting the requirements of space-constrained applications. The cover plate also increases the creepage distance between the terminal block and the printed circuit board, improving insulation performance. Multiple terminal blocks and two soldering tabs are soldered to the printed circuit board, effectively improving connection reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, without paying creative labor, other drawings obtained based on these drawings still fall within the scope of the present invention.

[0017] Figure 1 This is an assembly diagram of an embodiment of the utility model and a printed circuit board;

[0018] Figure 2 This is a three-dimensional diagram of an embodiment of the utility model;

[0019] Figure 3 This is a cross-sectional view of an embodiment of the present utility model;

[0020] Figure 4 This is an exploded view of an embodiment of the present utility model;

[0021] Figure 5 This is a three-dimensional diagram of the terminal piece according to an embodiment of the present utility model. DETAILED DESCRIPTION

[0022] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which this invention pertains; the terms used herein are for the purpose of describing specific embodiments only and are not intended to limit this invention. The terms "including" and "having" and any variations thereof in the specification and claims of this invention and the accompanying drawings are intended to cover non-exclusive inclusions.

[0024] The directional and positional terms used in this invention, such as up, down, front, back, left, right, inside, outside, top, bottom, and side, are merely references to the directions or positions in the accompanying drawings. Therefore, the directional and positional terms used are intended to illustrate and facilitate understanding of this invention and are not intended to limit the scope of protection of this invention.

[0025] The present invention will now be further described with reference to the accompanying drawings and specific embodiments:

[0026] like Figures 1-3 As shown, a submerged plate connector includes a plastic shell 1 and a plurality of terminal pieces 2 and two welding pieces 3 respectively arranged in the plastic shell 1. A cover plate 4 covering the plurality of terminal pieces 2 is detachably connected to the plastic shell 1. The cover plate 4 has a step portion 40 for placing a printed circuit board 5. Each terminal piece 2 has a welding portion 21 extending outside the cover plate 4 and connected to the printed circuit board 5 at one end. The two welding pieces 2 are symmetrically arranged on both sides of the plastic shell 1. Each welding piece 3 has a welding foot portion 31 extending outside the plastic shell 1 and connected to the printed circuit board 5. The welding portion 21 has a welding plane 22 connected to the printed circuit board 5, and the welding foot portion 31 has a contact plane 32 connected to the printed circuit board 2. The welding plane 22 and the contact plane 32 are in the same horizontal plane. The welding plane of the welding portion and the contact plane of the welding foot portion are respectively welded to the printed circuit board, which can ensure a more secure connection between the connector and the printed circuit board, thereby helping to improve the connection reliability of the connector.

[0027] like Figures 3-5As shown, the other end of each terminal piece 2 has a first contact arm 23 and a second contact arm 24 extending into the plug-in cavity 100 of the plastic shell 1, and an insertion space 200 is formed between the first contact arm 23 and the second contact arm 24. The terminal piece adopts a double contact arm structure design, which can enhance the contact reliability of the terminal piece and help improve the connection reliability. The tail of the first contact arm 23 has a plug-in guide arc surface 231. The plug-in guide arc surface can reduce the insertion force of the first contact arm, ensuring that the first contact arm can be plugged smoothly and reliably, which is conducive to improving the connection reliability. The tail of the second contact arm 24 has a contact protrusion 241 in the shape of an arc surface, and the tail of the contact protrusion 241 has a plug-in guide inclined surface 242. The contact protrusion can enhance the contact pressure of the second contact arm to ensure the connection reliability, and the symmetrical guide inclined surface can reduce the insertion force to ensure that the terminal piece is reliably connected to the external connector.

[0028] like Figure 3 As shown, a locking cavity 101 is provided in the plastic housing 1 below the corresponding insertion cavity 100, and a locking block 102 is provided in the locking cavity 101. The locking block is arranged in the locking cavity and can be engaged with the external connector, preventing the locking block from being exposed outside the plastic housing and preventing the connector from being unlocked due to accidental contact, thereby improving the connection reliability of the connector.

[0029] like Figure 2 and 4 As shown, the cover plate 4 has two symmetrically distributed, L-shaped sliders 41. The plastic housing 1 is provided with two chute grooves 11 that engage with the two sliders 41. The chute grooves 11 have corresponding openings with latching holes 12, and the sliders 41 are equipped with latching blocks 42 that engage with the latching holes 12. The cover plate engages with the chute grooves of the plastic housing via the sliders, facilitating assembly of the cover plate and the plastic housing and ensuring a more compact connection between the cover plate and the plastic housing. The openings of the chute grooves 11 are provided with guide ramps 111 to guide the insertion of the sliders 41. The sliders 41 have insertion ramps 411 that mate with the guide ramps 111. The guide ramps serve as guides for the sliders, thereby improving the assembly efficiency of the cover plate and the plastic housing. One side of the step portion 40 is provided with multiple retaining grooves 401 for the welding portions 21 of multiple terminal strips 2 to pass through. Each terminal strip 2 is provided with an anti-dropout insert 25 that penetrates the plastic housing 1. The retaining grooves limit the soldering portions of the terminal lugs, ensuring a more compact and secure connection between the terminal lugs, the housing, and the cover, improving connection reliability. The housing 1 includes a support piece 13 for supporting the solder legs 31 of the two solder lugs 3. This support piece supports the soldering portions of the lugs, ensuring a reliable connection between the solder legs and the printed circuit board.

[0030] A cover plate for placing the printed circuit board (PCB) on the plastic housing allows the connector to "sink" into the PCB's slot, reducing the overall height and enabling a more compact circuit layout, meeting space-constrained applications. The cover plate also increases the creepage distance between the terminal blocks and the PCB, providing improved insulation performance. Multiple terminal blocks and two solder tabs are soldered separately to the PCB, effectively improving connection reliability.

[0031] The above description is only one embodiment of the present invention and is not intended to limit the scope of protection of the present invention; the scope of protection of the present invention is defined by the claims in the appended claims, and all equivalent changes and modifications made based on the present invention are within the scope of protection of the present utility model patent.

Claims

1. A submerged connector, comprising a housing, a plurality of terminal pieces and two welding pieces disposed within the housing, characterized in that: The plastic shell is detachably connected to a cover plate covering a plurality of terminal pieces, the cover plate has a step portion for placing a printed circuit board, and one end of each terminal piece has a welding portion extending outside the cover plate and connected to the printed circuit board. The two welding pieces are symmetrically arranged on both sides of the plastic shell, and each welding piece has a welding foot portion extending outside the plastic shell and connected to the printed circuit board.

2. The sunken plate connector according to claim 1, characterized in that: The welding portion has a welding plane connected to the printed circuit board, the welding foot portion has a contact plane connected to the printed circuit board, and the welding plane and the contact plane are in the same horizontal plane.

3. The sunken plate connector according to claim 1, wherein: The other end of each terminal piece is provided with a first contact arm and a second contact arm extending into the plug-in cavity of the plastic shell, and a plug-in space is formed between the first contact arm and the second contact arm.

4. The sunken plate connector according to claim 3, characterized in that: The tail of the first contact arm is provided with an inserting guide arc surface.

5. The sunken plate connector according to claim 3 or 4, characterized in that: The tail of the second contact arm has a contact protrusion in the shape of an arc surface, and the tail of the contact protrusion has an inserting guide inclined surface.

6. The sunken plate connector according to claim 3 or 4, characterized in that: A locking cavity is provided in the plastic shell at a position below the corresponding plug-in cavity, and a locking block is provided in the locking cavity.

7. The sunken plate connector according to claim 1, characterized in that: The cover plate is provided with two symmetrically distributed L-shaped sliders, the plastic shell is provided with two sliding grooves engaged with the two sliders, the sliding grooves are provided with clamping holes corresponding to their openings, and the slider is provided with a clamping block engaged in the clamping holes.

8. The sunken plate connector according to claim 7, characterized in that: The opening of the sliding groove is provided with a guide inclined surface for guiding the insertion of the slider, and the slider is provided with an insertion inclined surface matched with the guide inclined surface.

9. The sunken plate connector according to claim 1, characterized in that: A plurality of limiting grooves for the welding parts of a plurality of terminal pieces to pass through are provided on one side of the step portion, and each of the terminal pieces is provided with an anti-dropping plug inserted into the plastic shell.

10. The sunken plate connector according to claim 1, characterized in that: The plastic shell has a supporting piece for supporting the welding feet of the two welding pieces.

Images