CN215989354U

CN215989354U - Card slot connector

Info

Publication number: CN215989354U
Application number: CN202122511226.6U
Authority: CN
Inventors: 林海燕; 蔡友华
Original assignee: Xing Wan Lian Electronics Co ltd
Current assignee: Xing Wan Lian Electronics Co ltd
Priority date: 2021-04-29
Filing date: 2021-10-18
Publication date: 2022-03-08
Anticipated expiration: 2031-10-18

Abstract

The utility model discloses a card slot connector, which comprises an insulating body, wherein the top surface of the insulating body is downwards sunken along the longitudinal direction to form a slot, two side walls of the slot in the longitudinal direction are provided with a plurality of accommodating holes, and two side surfaces of each accommodating hole, which are vertical to the longitudinal direction of the slot, are oppositely protruded to form retaining walls; and the metal terminals are correspondingly accommodated in the accommodating holes and positioned between the retaining walls on the two side surfaces of each accommodating hole, and the retaining walls are parallel to the depth direction of the slot, close to the surface of the slot, do not exceed the side walls of the slot in the longitudinal direction and are not parallel and level with the side walls of the slot in the longitudinal direction. The clamping groove connector effectively solves the problems that the precision of a mold is required to be very high when the insulating body is manufactured, and burrs are easy to generate due to slight difference of precision.

Description

Card slot connector

Technical Field

The utility model relates to the field of connectors, in particular to a clamping groove connector.

Background

The transmission speed required by electronic and IT products is faster and faster, and the products need to be compatible with the specifications of the old version while being updated. For example, the physical interface standard between PCIE 3.0 and PCIE 4.0 connectors, such as PCIE slot connectors, is not changed. The modification can directly double the transmission speed, but makes the connector design more demanding. The slot connector on the market reduces crosstalk between terminals by shortening the length of the terminals at present, and reduces an antenna effect (stub) to meet high-frequency performance of a product. The two side surfaces of each accommodating hole of the slot connector, which are vertical to the longitudinal direction of the slot, are oppositely protruded to form blocking walls, the mold precision of the blocking wall is required to be very high when a plastic mold is designed and manufactured, but the blocking wall is flush with the central slot surface, and burrs are easily generated at the point of slightly poor mold precision. Therefore, a card slot connector is needed to improve the above-mentioned drawbacks.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a clamping groove connector, which effectively solves the problems that the precision of a mould is required to be very high when an insulating body is manufactured, and burrs are easy to generate due to slight difference of precision.

In order to achieve the above object, the present invention provides a card slot connector, which includes an insulating body, wherein a top surface of the insulating body is recessed downwards along a longitudinal direction to form a slot, two side walls of the slot in the longitudinal direction are provided with a plurality of receiving holes, and two side surfaces of each receiving hole perpendicular to the longitudinal direction of the slot are protruded oppositely to form retaining walls; and the metal terminals are correspondingly accommodated in the accommodating holes and positioned between the retaining walls on the two side surfaces of each accommodating hole, and the retaining walls are parallel to the depth direction of the slot, close to the surface of the slot, do not exceed the side walls of the slot in the longitudinal direction and are not parallel and level with the side walls of the slot in the longitudinal direction.

As a further improvement of the utility model, the upper end of the retaining wall extends to the top wall of the containing hole, and the lower end of the retaining wall is not connected with the bottom wall of the containing hole.

As a further improvement of the present invention, the lower end of the surface of the retaining wall perpendicular to the lengthwise direction of the slot is an inclined surface, so that the thickness of the lower end of the retaining wall along the lengthwise direction of the slot is gradually reduced.

As a further improvement of the utility model, each metal terminal comprises a contact part and a holding part which are distributed up and down, the tail end of the contact part is the upper tail end of the metal terminal, the holding part is fixed on the inner wall of the accommodating hole in an interference mode, a force arm is arranged between the contact part and the holding part, the force arm is pressed against and held on the retaining wall in a prepressing mode, and the contact part extends into the slot from the position between the retaining walls on the two side faces of the accommodating hole.

As a further improvement of the present invention, the top end of each metal terminal is located below the top wall of the corresponding receiving hole and is not in contact with the top wall of the receiving hole.

As a further improvement of the present invention, the contact portion is formed by bending upward from an upper end of the arm.

As a further improvement of the utility model, the width direction of the force arm is the same as the length direction of the slot, and the width of the contact part is smaller than that of the force arm.

As a further improvement of the utility model, at least one fool-proof structure is arranged in the slot.

Compared with the prior art, the clamping groove connector has the following beneficial effects:

(1) the retaining wall is parallel to the depth direction of the slot and close to the surface of the slot, the surface of the retaining wall does not exceed the side wall of the slot in the longitudinal direction and is not parallel and level with the side wall of the slot in the longitudinal direction, and therefore a stepped structure is formed, when plastic mold parts are disassembled after the insulating body is molded, the mold parts at the slot and the mold parts at the containing hole form a butt-plugging structure, the two mold parts can have enough space to realize the laminating due to the existence of the stepped structure, the problem that the insulating body requires very high mold precision during manufacturing is effectively solved, and burrs are easily generated due to slight difference of precision.

(2) The lower end of the retaining wall is not connected with the bottom wall of the containing hole, so that the die parts at the containing hole can be conveniently placed.

(3) The design of the inclined plane enables the die parts at the accommodating holes to be disassembled and installed.

(4) The part of the metal terminal which is pre-pressed and supported on the insulating body is lowered to the arm of force part, so that the extending part of the tail end of the contact part on the metal terminal can be removed to shorten the length of the metal terminal, thereby reducing the crosstalk between the adjacent metal terminals; and the distance between the contact point of the contact portion and the end of the contact portion is short, which is the end of the contact portion, that is, the upper end of the metal terminal, so that the antenna effect can be reduced to satisfy the high frequency performance of the product.

(5) The prepressing part of the metal terminal is reduced to the force arm position to be prepressed and supported on the insulating body, so that the metal terminal has enough elasticity and prepressing force, and the contact point intervals of the contact parts of the metal terminals are ensured to be consistent.

The utility model will become more apparent from the following description when taken in conjunction with the accompanying drawings, which illustrate embodiments of the utility model.

Drawings

Fig. 1 is a perspective view of a card slot connector.

Fig. 2 is a cross-sectional view of the card slot connector taken along the width direction and down the middle of the top surface of the receiving hole.

Fig. 3 is a schematic view of the terminal with the position of the section in fig. 2 removed.

Fig. 4 is a cross-sectional view of the card slot connector taken along the longitudinal direction and down the middle of the top surface of the receiving hole.

Fig. 5 is a perspective view of the metal terminal.

Fig. 6 is a schematic view of the first mold part and the second mold part being inserted into the insulating body.

The reference numbers illustrate: the structure comprises an insulating body 1, a slot 11, a side wall 111, a containing hole 12, a fool-proof structure 13, a retaining wall 14, an inclined plane 141, a surface 142, a metal terminal 2, a contact part 21, a fixing part 22, a welding part 23, a force arm 24, a first die part 100 and a second die part 200.

Detailed Description

Embodiments of the present invention will now be described with reference to the drawings, wherein like element numerals represent like elements.

Referring to fig. 1-6, the card slot connector includes an insulating housing 1, a slot 11 formed by a top surface thereof being recessed downward along a longitudinal direction, a plurality of receiving holes 12 formed on two side walls 111 of the slot 11 along the longitudinal direction, a fool-proof structure 13 disposed in the slot 11, and retaining walls 14 formed by two side walls of each receiving hole 12 protruding toward each other and perpendicular to the longitudinal direction of the slot 11. The retaining wall 14 is parallel to the depth direction of the slot 11 and the surface 142 close to the slot 11 does not exceed the longitudinal side wall 111 of the slot 11 and is not level with the longitudinal side wall 111 of the slot 11, i.e. a step structure is formed. The upper end of the retaining wall 14 extends to the top wall of the receiving hole 12, and the lower end of the retaining wall 14 is not connected with the bottom wall of the receiving hole 12. The lower end of the surface of the retaining wall 14 perpendicular to the longitudinal direction of the slot 11 is an inclined surface 141 which gradually reduces the thickness of the lower end of the retaining wall 14 along the longitudinal direction of the slot 11.

The card slot connector further comprises a plurality of metal terminals 2 which are correspondingly contained in the containing holes 12 and located between the retaining walls 13 on the two side surfaces of the containing holes 12. The top end of each metal terminal 2 is located below the top wall of the corresponding receiving hole 12 and is not in contact with the top wall of the receiving hole 12. Each of the metal terminals 2 includes a contact portion 21, a holding portion 22, and a soldering portion 23 which are vertically distributed. The end of the contact portion 21 is the upper end of the metal terminal 2, the contact portion 21 extends into the slot 11 from between the retaining walls 14 on the two side surfaces of the accommodating hole 12, the holding portion 22 is fixed on the inner wall of the accommodating hole 12 in an interference manner, a force arm 24 is arranged between the contact portion 21 and the holding portion 22, the contact portion 21 is formed by bending upwards from the upper end of the force arm 24, and the force arm 24 is pre-pressed and supported on the retaining wall 14. The width direction of the force arm 24 is the same as the length direction of the slot 11, and the width of the contact part 21 is smaller than that of the force arm 24. The welding portion 23 is formed to extend from the lower end of the holding portion 22, and the welding portion 23 is perpendicular to the holding portion 22.

Because the retaining wall 14 is parallel to the depth direction of the slot 11 and the surface 142 close to the slot 11 does not exceed the longitudinal side wall 111 of the slot 11 and is not even with the longitudinal side wall 111 of the slot 11, i.e. a step structure is formed, when the plastic mold part is disassembled after the insulation body 1 is molded, the first mold part 100 at the slot 11 and the second mold part 200 at the accommodating hole 12 form an opposite insertion structure, and the existence of the step structure enables the first mold part 100 and the second mold part 200 to have enough space to be attached, thereby effectively solving the problems that the mold precision required by the insulation body 1 during manufacturing is very high, and burrs are easily generated at a slightly poor precision.

The present invention has been described in connection with the preferred embodiments, but the present invention is not limited to the embodiments disclosed above, and is intended to cover various modifications, equivalent combinations, which are made in accordance with the spirit of the present invention.

Claims

1. A card slot connector comprises an insulating body, wherein the top surface of the insulating body is downwards sunken along the longitudinal direction to form a slot, two side walls of the slot in the longitudinal direction are provided with a plurality of accommodating holes, and two side surfaces of each accommodating hole, which are vertical to the longitudinal direction of the slot, are oppositely protruded to form retaining walls; and a plurality of metal terminals, correspond accept in each accommodating hole and lie in between the barricade of each accommodating hole both sides face, its characterized in that: the retaining wall is parallel to the depth direction of the slot, the surface of the retaining wall close to the slot does not exceed the side wall of the slot in the longitudinal direction, and the retaining wall is not flush with the side wall of the slot in the longitudinal direction.

2. The card slot connector of claim 1, wherein: the upper end of barricade extends to the roof of accepting the hole, and the lower extreme and the accepting hole diapire of barricade do not meet.

3. The card slot connector of claim 2, wherein: the lower end of the surface of the retaining wall, which is vertical to the lengthwise direction of the slot, is an inclined plane which enables the lower end of the retaining wall to be gradually reduced along the lengthwise direction of the slot.

4. The card slot connector of claim 1, wherein: each metal terminal comprises a contact part and a fixing part which are distributed up and down, the tail end of the contact part is the upper tail end of the metal terminal, the fixing part is fixed on the inner wall of the containing hole in an interference mode, a force arm is arranged between the contact part and the fixing part, the force arm is pressed against the retaining wall in a pressing mode, and the contact part extends into the slot from the position between the retaining walls on the two side faces of the containing hole.

5. The card slot connector of claim 4, wherein: the top end of each metal terminal is positioned below the top wall of the corresponding accommodating hole and is not contacted with the top wall of the accommodating hole.

6. The card slot connector of claim 5, wherein: the contact part is formed by bending upwards from the upper end of the force arm.

7. The card slot connector of claim 6, wherein: the width direction of the force arm is the same as the length direction of the slot, and the width of the contact part is smaller than that of the force arm.

8. The card slot connector of claim 7, wherein: at least one fool-proof structure is arranged in the slot.