CN2256596Y - Coupling socket for printed circuit board - Google Patents

Abstract

The utility model relates to a circuit connector which is a splicing socket for a printed circuit board, particularly an improved design of a contact terminal. The contact terminal comprises a fixed part convexly projecting out of the bottom end of a base, a straight elastic part straightly extending upward from the top end of the fixed part, a bended elastic part connected with the straight elastic part and bent in a half circular arc shape, a bent elastic part connected with the bended elastic part, straightly extending and crosswise bent into the base and a contact part connected with the bent elastic part and convexly projecting out of the space between both lateral sides of the base in an arc shape, wherein, the end of the contact part is suspended. The utility model can be dispersedly inserted into the printed circuit board, and the stress caused by the displacement of the contact part enables the contact part to be free from elastic fatigue.

Description

The circuit board plug-and-socket seat

The utility model relates to a kind of line connector, relates to the contact terminal structure of circuit board plug-and-socket seat or rather.

Circuit board plug-and-socket seat 1 as shown in Figure 5 generally is installed in and supplies grafting printed circuit board (PCB) 2 on the substrate, makes and substrate generation electrical connection.Plug socket 1 connects substrate circuit and printed board circuit respectively by its inner contact terminal, and to finish required annexation, because contact terminal is related to the connection effect of two kinds of main bodys, thereby its quality is especially important.

In the past for preventing that the contact terminal loose contact from having done all improvement and otherwise effort, but effect is not satisfactory, still has the phenomenon of elastic fatigue or distortion to take place in actual the use.A kind of comparatively traditional contact terminal 3 shown in Figure 6, being inclined upwardly by its fixed part 31 extends to form contact site 32, is bent to form guidance part 33 again.Because the top of guidance part 33 is unsettled, thereby distortion when inserting printed circuit board (PCB) 2 easily.In addition, the elasticity of contact site 32 is kept by its angle of inclination, therefore causes the phenomenon of elastic fatigue easily.Below either way be easy to generate the problem of loose contact.

A kind of contact terminal 4 that improves structure as shown in Figure 7, extend upward as the crow flies by fixed part 41, through forming contact site 43 again after the downward-sloping one-tenth elastic portion 42 of bending, this contact terminal 4 can prevent the situation of structure guidance part bending distortion shown in Figure 6, but the elasticity of improved contact terminal 4 is to be supplied with by the downward-sloping elastic portion 42 of bending, thereby the shortcoming of elastic fatigue still is resolved at the end easily.

The purpose of this utility model be to the circuit board plug-and-socket seat particularly the contact terminal structure make improvements design, the pressure in the time of can disperseing contact terminal to be subjected to circuit board plug-and-socket is to solve the elastic fatigue and the problem on deformation of terminal.

Circuit board plug-and-socket seat of the present utility model, by pedestal be arranged in that the contact terminal of each containing hole constitutes on the pedestal, contact terminal comprise protruding be exposed to the pedestal bottom because of the bonding part and protrudingly be exposed to the contact site between the dual-side in the pedestal, it is characterized in that:

Described contact terminal also comprise by described fixed part top straight extend upward the bent body elasticity portion that is connected in the stretched elastic portion between the pedestal one side inside and outside wall, with stretched elastic portion top and becomes 180 degree semi arch bendings, with after bent body elasticity portion bottom is connected straight extension again to the oblique bending elastic portion that is bent to form in pedestal center; Described contact site and bending elastic portion be terminal is connected camber crooked and terminal extend after turning round between the inside and outside wall of pedestal one side unsettled.

The stretched elastic portion dual-side of described contact terminal is provided with the fin that is fastened in described pedestal containing hole both sides.

When printed circuit board (PCB) inserts in the plug socket, make contact site produce the active force of off normal between the inside and outside wall of pedestal side, the elasticity of this active force order through bending elastic portion, bent body elasticity portion and stretched elastic portion absorbs and is distributed to whole contact terminal, thereby contact site is difficult for causing elastic fatigue.

Further specify technology of the present utility model below in conjunction with the embodiment accompanying drawing.

Fig. 1, the three-dimensional decomposition texture schematic diagram of circuit board plug-and-socket seat.

Fig. 2, circuit board plug-and-socket seat three-dimensional schematic side view.

Contact terminal and pedestal concerns schematic diagram in Fig. 3, the circuit board plug-and-socket seat.

The action schematic diagram of contact terminal when Fig. 4, insertion printed circuit board (PCB).

The perspective view of Fig. 5, plug socket and printed circuit board (PCB).

The schematic side view of Fig. 6, traditional structure contact terminal.

The schematic side view of Fig. 7, another traditional structure contact terminal.

Referring to Fig. 1, Fig. 2, the circuit board plug-and-socket seat comprises pedestal 1 and a plurality of contact terminal 5, and contact terminal 5 is arranged between the inside and outside wall of pedestal 1 dual-side, and left and right corresponding.When printed circuit board (PCB) 2 was intercalated in the pedestal 1, each contact terminal 5 contacted (see figure 5) with printed circuit board (PCB) 2, and printed circuit board (PCB) 2 and substrate (end illustrates among the figure) are got in touch.

The shape of the contact terminal 5 of this improvement structure can be referring to Fig. 1, Fig. 3, Fig. 4, comprise and protrudingly be exposed to pedestal 1 bottom and can be fixed on stiff end 51 on the substrate, stiff end 51 makes progress behind the suitable height of straight extension, extend a suitable length vertically downward with the crooked also continuation of 180 ° half garden arcs, outwards bend then and block so that the arcuation of a bending is unsettled.

Fig. 3 further illustrates the structure and the shape thereof of plug socket, function, stiff end 51 straight extending upward in pedestal 1 one sides, between the outer wall, can form body elasticity portion 52 always, when this stretched elastic portion 52 extends near pedestal 1 tip position with 180 the degree the semi arch bendings, form a bent body elasticity portion 53, this song body elasticity portion 53 outwards is bent to form a bending elastic portion 54 after extending suitable length vertically downward again, terminal arcuation with bending is recessed in pedestal 1 side, revolution is blocked between the outer wall, form the protruding contact site 55 that is exposed to central authorities in the pedestal 1, contact site 55 can contact with printed circuit board (PCB).

Fig. 4 illustrates the effect of this plug socket, because contact site 55 protruding being exposed between the pedestal 1 left and right side, therefore when inserting printed circuit board (PCB) 2, will impel the inwall off normal of contact site 55 to pedestal 1, because unsettled, the other end of contact site 55 1 ends is bending elastic portion 54, thus the off normal of contact site 55 be through bending elastic portion 54 for fulcrum to the free end off normal.Yet bending elastic portion 54 is the cantilever beams that are connected bent body elasticity portion 53, thereby can reaction force be affacted contact site 55 respectively by its elasticity and produce elasticity, affacts joining place with bent body elasticity portion 53 and puts on bent body elasticity portion 53 again.After song body elasticity portion 53 is subjected to bending the active force of elastic portion 54, also by its elasticity partial action power is drawn to bending elastic portion 54, partial action power is drawn to stretched elastic portion 52 and by stretched elastic portion 52 and is absorbed.

Therefore when printed circuit board (PCB) 2 inserts in the plug socket, the pressure that contact site 55 off normals are produced will be distributed to whole contact terminal 5 one by one via bending elastic portion 54, bent body elasticity portion 53 and stretched elastic portion 52, be unlikely concentrating on contact site 55 places and bending elastic portion 54 places and cause elastic fatigue, prolonged the useful life of contact terminal.

The contact terminal 5 of this improvement structure has been convexly equipped with some fins 56 again as shown in Fig. 1, Fig. 2 at the dual-side of stretched elastic portion 52, and when contact terminal 5 is fixed in the containing hole 11 of pedestal 1, but fin 56 proper clips are beneficial to assembling in containing hole 11 both sides.

The plug socket of the utility model printed circuit board (PCB), its contact terminal has increased bending elastic portion, bent body elasticity portion and stretched elastic portion, when inserting in the plug socket, impels printed circuit board (PCB) the contact site off normal, its off normal stress is distributed to whole terminal thereupon, because stress is not concentrated in contact site thereby has solved the elastic fatigue problem of terminal well, extend its useful life, simultaneously owing to there is the bending elastic portion on top also can not be out of shape because of inserting circuit board.

Claims (2)

1, a kind of circuit board plug-and-socket seat, by pedestal be arranged in that the contact terminal of each containing hole constitutes on the pedestal, contact terminal comprise protruding be exposed to the pedestal bottom because of the bonding part and protrudingly be exposed to the contact site between the dual-side in the pedestal, it is characterized in that:

Described contact terminal also comprise by described fixed part top straight extend upward the bent body elasticity portion that is connected in the stretched elastic portion between the pedestal one side inside and outside wall, with stretched elastic portion top and becomes 180 degree semi arch bendings, with after bent body elasticity portion bottom is connected straight extension again to the oblique bending elastic portion that is bent to form in pedestal center; Described contact site and bending elastic portion be terminal is connected camber crooked and terminal extend after turning round between the inside and outside wall of pedestal one side unsettled.

2, circuit board plug-and-socket seat according to claim 1 is characterized in that: the stretched elastic portion dual-side of described contact terminal is provided with the fin that is fastened in described pedestal containing hole both sides.

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