CN2415478Y - Electric connector - Google Patents

Abstract

An electrical connector, comprising: a longitudinally long insulating body, a plurality of terminals fixed through the front and rear surfaces of the insulating body, and a pair of welding pads matched and fixed on opposite side ends of the insulating body. Wherein, the ends of the insulating body are provided with holding spaces respectively, and the holding spaces penetrate to the front surface of the insulating body, and a card slot is provided at the upper position of the side wall of each holding space. The welding backing plate includes a vertical holding part and a horizontal welding part extending laterally from the lower edge of the vertical holding part, the vertical holding part is matched with the aforementioned holding space, and a restriction block matched with the aforementioned slot is arranged on the upper edge thereof .

Description

electrical connector

The utility model relates to an electric connector, in particular to an electric connector with a welding backing plate for installation on a printed circuit board.

For the prior art related to the present utility model, reference may be made to U.S. Patent No. 4,713,013 and No. 4,850,892. Please refer to FIG. , when the connector 9 needs to be installed on the printed circuit board 8, the aforementioned guide posts 90 are respectively inserted into the corresponding guide holes 80 on the printed circuit board 8, and the connector 9 is positioned on the printed circuit board 8 more accurately. . However, when this type of connector is fixed on the printed circuit board by the guide post, it is fixed entirely by the soldering action between the soldering leg of the conductive terminal and the printed circuit board, so the fixing effect is not good. Especially when this kind of connector is subjected to an external force perpendicular to the direction of the printed circuit board during the plugging process, all the force is borne by the conductive terminals, which can easily loosen the conductive terminals, causing signal transmission failures in the connector, thus reducing the connector's reliability. performance and shorten connector life. Another example is the U.S. Patent No. 4,681,389 case. In order to solve the disadvantages of its poor fixing effect on the printed circuit board, this existing electrical connector is provided with a pre-positioning method for promoting its mutual welding with the circuit board. However, the fixing and positioning effect of this kind of clamping pin is not good, and it is substantially impossible to obtain better overall performance of the electrical connector. Please refer to the relevant technology disclosed in U.S. Patent No. 5,232,379, which is to install a "U"-shaped welding backing plate at both ends of the elongated insulating body, when the welding backing plate is connected to the printed circuit board When soldering, the connector can be firmly installed on the printed circuit board. However, it is difficult to form the "U" shape structure, and there is no leading part when it is installed with the insulating body, so the assembly is difficult and will obviously increase the manufacturing cost. cost. In addition, the electrical connector is not provided with guide posts, which cannot be well positioned on the printed circuit board. Please refer to U.S. Patent No. 5,186,654. The electrical connector disclosed in this patent is provided with both guide posts and solder pads, so it can be well positioned and firmly mounted on the printed circuit board. However, it also has a "U"-shaped structure that is difficult to form, and there is no leading part when it is installed with the insulating body, and the assembly is difficult, so the manufacturing cost is still relatively high.

The purpose of this utility model is to provide an electrical connector, the electrical connector has a welding backing plate that can make the connector firmly combined with the printed circuit board, it is easy to align the position when it is assembled with the insulating body, and the manufacturing cost is low , Easy to manufacture.

To achieve the above purpose, the electrical connector of the present invention includes: a longitudinally long insulating body, a plurality of terminals penetrating through the front and rear surfaces of the insulating body and fixed therein, and a pair of welding backing plates matched and fixed on opposite sides of the insulating body. Wherein, the ends of the insulating body are respectively provided with holding spaces, and the holding spaces penetrate to the front surface of the insulating body. The welding backing plate includes a vertical holding portion and a horizontal welding portion laterally extending from the lower edge of the vertical holding portion. The vertical holding portion fits with the aforementioned holding space, and a limiting block is arranged on the upper edge thereof. Since the setting of the above-mentioned limiting block can be realized only by cutting and bending the upper edge of the holding part, there is no need for complicated manufacturing procedures, it is easy to manufacture, and can effectively enhance the ability of the electrical connector to resist being damaged by an upward external force vertical to the printed circuit board , so that the electrical connector of the utility model can be more firmly fixed on the printed circuit board.

In addition, the holding space of the insulating body is also connected with a fixing slot, and the welding backing plate further includes a fixing part with a leading pointed head extending from the rear edge of the holding part, which can use the leading pointed The head is first inserted into the corresponding fixing slot, and guides the assembly of the entire welding backing plate and the insulating body, thereby reducing assembly difficulty and production cost.

Fig. 1 is a three-dimensional exploded view of the electrical connector of the present invention.

Fig. 2 is a three-dimensional assembled view of the electrical connector of the present invention.

Fig. 3 is a cross-sectional view along line III-III shown in Fig. 2 .

FIG. 4 is a partially enlarged view showing that the solder pad is assembled on the insulating body of the electrical connector.

FIG. 5 is an assembly diagram of a conventional electrical connector.

Please refer to Fig. 1, the utility model electrical connector 1 comprises an insulating body 10, a number of terminals 20 fixed in the insulating body 10, and a pair of opposite ends (not numbered) fixed on the insulating body 10 and welded. Solder pad 30 on a printed circuit board.

The insulative body 10 is elongated, and the middle part thereof is provided with a plurality of terminals 20 through the front and rear surfaces. Each terminal 20 extends from the front surface 100 of the insulative body 10 to match with a mating connector (not shown). The butt end 200 of the insulating housing 10 and the welding end 202 extending from the rear surface 102 of the insulating housing 10 to be soldered to the printed circuit board 40 . Rectangular holding spaces 12 are provided at both ends of the insulating body 10 in the longitudinal direction, and the holding spaces 12 are all connected to the front surface 100 of the insulating body 10, and the upper side wall of each holding space 12 is also provided with a self-insulating The card slot 14 extends backward from the front surface 100 of the main body 10 . In addition, the insulating body 10 is further provided with a fixing slot 16 extending backward from each holding space 12 to the rear surface 102 thereof. In addition, two guide posts 18 extend downward from two sides (not numbered) of the bottom surface of the insulating body 10 , which can be inserted into a pair of positioning holes 42 disposed on the printed circuit board 40 to achieve a positioning effect.

1 to 4, each solder pad 30 includes a vertical holding portion 32 that can be matched with the aforementioned holding space 12, and a horizontally extending from the lower edge of the holding portion 32 to connect with the printed circuit board. Weld 34 of 40 phase weld. Each holding portion 32 also includes a limiting block 36 formed by bending the upper front edge of the holding portion 32 to one side, which can be fixedly engaged with the corresponding slot 14 of the insulating housing 10 . In addition, each welding backing plate 30 further includes a fixing portion 38 extending from the rear edge of the holding portion 32 opposite to the limiting block 36 , so as to be matedly fixed in the corresponding fixing slot 16 . The rear end of the fixing part 38 has a pointed head 382 for guiding when inserted into the fixing slot 16, and two protrusions 380 are formed on its upper edge to interfere with the concave steps 160 respectively arranged in the fixing slot 16. fixed, so that the fixing part 38 and the fixing slot 16 can be more firmly matched.

During assembly, the welding backing plate 30 passes through the front surface 100 of the insulating body 10 and is inserted into the corresponding holding space 12 at the side end of the insulating body 10, and the pointed head 382 of the fixing part 38 is first inserted into the insulating body 10. Fix in the slot 16 , and then complete the assembly of the entire welding backing plate 30 and the insulating body with the guiding effect of the fixing portion 38 . At this time, the protrusion 380 on the fixing part 38 is engaged with the concave step of the fixing slot 16, so that the welding backing plate 30 is combined with the insulating body 10, and the holding part 32 is fixed in the holding space 12, and it is connected with the holding space 12. Cooperating with the side walls of the electrical connector 1 can enhance the ability of the connector 1 to withstand lateral force, while the limiting block 36 is embedded in the corresponding slot 14, which can enhance the ability of the electrical connector 1 to withstand external force in the vertical direction.

Since the setting of the above-mentioned limiting block 36 can be achieved only by cutting and bending the upper edge of the holding portion 32, no complicated manufacturing procedures are required, and its manufacturing is easy, but it can effectively enhance the resistance of the electrical connector 1 to the upward force of the vertical printed circuit board. The ability to be destroyed by external force enables the electrical connector 1 of the present invention to be more firmly fixed on the printed circuit board 40 . In addition, the setting of the fixing part 38 with the leading pointed head 382 of the welding backing plate 30 can use the leading pointed head 382 to be inserted into the corresponding fixing slot 16 first, and the assembly of the entire welding backing plate 30 and the insulating body 1 Guiding effect, thereby reducing the difficulty of assembly and further reducing production costs.

Claims (6)

1. An electrical connector assembled on a printed circuit board, comprising: a longitudinally long insulating body, a number of terminals fixed through the front and rear surfaces of the insulating body, and a pair of welding backing plates that are matched and fixed in the holding spaces of the opposite two ends of the insulating body , characterized in that: the welding backing plate includes a vertical holding portion matched with the holding space and a horizontal welding portion laterally extending from the lower edge of the holding portion, and a limiting block is provided on the upper edge of the holding portion. 2. The electrical connector according to claim 1, characterized in that: an upper portion of a side wall of the holding space is provided with a slot that can cooperate with the limiting block. 3. The electrical connector according to claim 1, wherein the insulating body communicates with a fixing slot from the bottom of the holding space, and the welding backing plate includes a fixing portion extending from the rear edge of the holding portion, which cooperates with and fixes the in the corresponding fixed slot. 4. The electrical connector according to claim 2, wherein the fixing portion of the solder pad has a pointed head. 5. The electrical connector according to claim 1, 2 or 3, characterized in that the limiting block of the solder pad is formed by bending the upper front edge of the holding part to one side. 6. The electrical connector according to claim 2 or 3, wherein a concave step is provided in the fixing slot, and a protrusion is formed on the fixing part to interfere with the concave step provided in the fixing slot.

Images