CONNECTOR

Abstract: A connector comprises a header having a plurality of contacts mounted thereon in such a manner that the post portions thereof protrude outwardly, and a socket having mounted thereon a plurality of contracts for contacting with the respective post portions of the header and being electrically connected thereto. The socket further has a plurality of guide grooves for receiving the respective post portions of the header thereinto and guiding them to the corresponding contacts of the socket. The guide grooves form slots thin enough to be broken when receiving the post portions thereinto or sufficiently narrower than the width of the post portions. Those regions of the contacts of the socket which contact with the post portions are provided so as not to be exposed outwardly of the socket.

Description: This invention relates to a connector, and particularly to a connector for connecting a battery unit. Among connectors of this kind, the popular type in which the contact of a male type connector or a female type connector or the contacts of connectors of both types are exposed outwardly. However, when the number of electrodes becomes great and the distance between the contacts becomes short, the danger of being short-circuited between the contacts becomes correspondingly great. Especially, in a connector attached to a battery unit containing a battery of large capacity therein, a contact leading to the electrode of the battery will suffer from greater damage when short-circuiting takes place, and will also be dangerous. JP-U-62116377 discloses a connector assembly comprising a header including a header housing and a plurality of contacts mounted in the housing in such a manner that post portions protrude outwardly, and a socket having mounted thereon a plurality of contacts for contacting with the respective post portions of the header and being electrically connected thereto. The socket has openings in one face into which flexible lips protrude for accepting posts of the header. JP-U-62116377 is designed for connection in a vertical direction, and the present invention seeks to improve the known art. To achieve such object, the present invention provides a connector assembly comprising a header including a header housing and a plurality of contacts mounted in said housing in such a manner that post portions thereof protrude outwardly, and a socket including a socket housing having a plurality of adjacent surfaces and having mounted thereon a plurality of contacts for contacting with the respective post portions of said header and being electrically connected thereto, said socket housing further having a plurality of guide grooves for receiving the respective post portions of the header thereinto and guiding them to the corresponding contacts of said socket, said guide grooves of said housing forming slots, whereby each slot is astride at least two of said adjacent surfaces of said housing, and is sufficiently narrower than the width of post portions for guiding the post portions thereinto, those regions of the contacts of said socket which contact with said post portions being provided so as not to be exposed outwardly of said socket. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a front view showing the header of a connector according to an embodiment of the present invention. Figure 2 is a plan view of the header of Figure 1. Figure 3 is a side view of the header of Figure 1. Figure 4 is a vertical cross-sectional view of the housing of the header of Figure 1. Figure 5 is a plan view showing a contact (shorter one) used in the header of Figure 1. Figure 6 is a plan view showing a contact (longer one) used in the header of Figure 1. Figure 7 is a front view showing the socket of the connector according to an embodiment of the present invention. Figure 8 is a plan view of the socket of Figure 7. Figure 9 is a side view of the socket of Figure 7. Figure 10 is a vertical cross-sectional view of the guide groove of the socket of Figure 7. Figure 11 is a plan view showing a contact used in the socket of Figure 7. Figure 12 is a side view showing the contact used in the socket of Figure 7. Figure 13 is a partly cross-sectional view showing the fitted state of the socket and header. Best Mode for Carrying Out the Invention The invention will hereinafter be described with respect to an embodiment thereof shown in the drawings. Figures 1 to 3 show the header 10 of a connector according to the present invention. The header comprises a housing 10A and a plurality of contacts 11 and 12 mounted so that the post - portion thereof may protrude outwardly from the housing, and with predetermined intervals provided in the lengthwise direction of the housing (see Figures 1 to 3). The details of the contacts are shown in Figures 5 and 6. As can be seen from these figures, the contacts comprise post portions 11A, 12A, leg portions 11C, 12C and connecting portions 11B, 12B connecting these together. The cross-sectional shape of the housing 10A with the post portions removed is shown in Figure 4. As shown the cross-section thereof has a short leg portion 10a provided at its bottom but generally presents a substantially rectangular shape. As can be seen from Figures 2, 5 and 6, at least one (11) of the post portions of the contacts is shorter than the other post portions (12) and the leg portions 11C and 12C of the contacts protrude downwardly from the bottom (leg portion) of the housing. Also, at least one of the post portions has its width made narrower than the width of the other post portions. As regards the position at which the post portions protrude from the housing, that of at least one post portion may be made to differ from that of the other post portions. Figures 7 to 10 show the socket 20 of the connector according to the present invention. The socket comprises a housing 20A and a plurality of contacts 21 for contacting with the respective post portions of the header and being electrically connected thereto. The contacts are mounted with predetermined intervals provided in the lengthwise direction of the housing. Also the contacts are mounted in the housing except terminal portions which will be described later so that the regions thereof contacting with the post portions may not be exposed outwardly of the housing. The socket further has a plurality of guide grooves 22 for receiving the respective post portions of the header thereinto and guiding them to the corresponding contacts of the socket. These guide grooves form slots 22A which are thin enough to be broken when receiving the post portions therein or sufficiently narrower than the width of the post portions. For example, each of the guide grooves is provided so that, as shown in Figure 10, the cross-sectional portion thereof may present a substantially M-shape or so that, as can be seen from Figures 7 to 9, it may be astride at least two (or three) adjacent surfaces of the housing. In the showing, the opposite side regions of each guide groove with respect to the slot are formed thinly as compared with the other portions of the housing and use a material rich in flexibility to thereby act as a spring. Each of the contacts of the socket, as shown in Figures 11 and 12, comprises a pair of contact pieces 21A, a terminal portion 21C and a connecting portion 21B connecting these together. The contact pieces are provided so as to be opposed to each other as shown in order to receive the post portion of the header and sandwich it therebetween. Figure 13 is a cross-sectional view showing the coupled state of the header and the socket. The post portions of the contacts of the header pass through the guide grooves of the socket and are received and sandwiched between the mutually opposed contact pieces of the socket and electrically connected thereto. The socket, although not shown, is attached in advance, for example, to a battery unit, and the terminals of the contacts are connected to the electrodes of the unit. Also, the header, although not shown, is mounted, for example, on a printed substrate through the leg portions of the contacts. In the socket of the present invention, the plurality of guide grooves for receiving the respective post portions of the header thereinto and guiding them to the corresponding contacts of the socket are provided so as to form slots which are thin enough to be broken when receiving the post portions and so that those regions of the contacts of the socket which contact with the post portions of the header may not be exposed outwardly of the socket and therefore, the contact portions of the contacts of the socket are not exposed outwardly of the housing, irrespective of before and after the connection of the socket and the header. Accordingly, even when the socket is attached, for example, to a unit including a battery of large capacity for use, short-circuiting will not take place and the safety in handling will be achieved. Also, each guide groove is provided so as to be astride at least two adjacent surfaces of the housing of the socket and therefore, it becomes possible for the post portions of the header and the contacts of the socket to be connected so as to become linear with one another or to intersect one another. Accordingly, about the connection of the header and socket, the degree of freedom of the direction of connection is great. At least one of the post portions of the contacts of the header is shorter than the other post portions and therefore, when the post portions and the contacts of the socket are to be connected together, a difference in the time for connection occurs between the longer post portions and the shorter post portion. Thereby, for example the connection of a ground terminal may be staggered in time so as to take measures such as improving safety. This also holds true of a case where with regard to a header differing in the width of the post portions thereof, the post portions are connected to the contacts of the socket in a direction intersecting the direction of protrusion thereof, and further holds true also of a case where with regard to a header differing in the position of protrusion of the post portions thereof, the post portions are connected to the contacts of the socket in a direction intersecting the direction of protrusion.

Claims: A connector assembly comprising a header (10) including a header housing (10A) and a plurality of contacts (11, 12) mounted in said housing in such a manner that post portions (11A, 12A) thereof protrude outwardly, and a socket (20) including a socket housing (20A) having a plurality of adjacent surfaces and having mounted thereon a plurality of contacts (21) for contacting with the respective post portions of said header and being electrically connected thereto, said socket housing further having a plurality of guide grooves (22) for receiving the respective post portions of the header thereinto and guiding them to the corresponding contacts of said socket, said guide grooves of said housing forming slots (22A), whereby each slot is astride at least two of said adjacent surfaces of said housing, and is sufficiently narrower than the width of post portions for guiding the post portions thereinto, those regions of the contacts of said socket which contact with said post portions being provided so as not to be exposed outwardly of said socket. A connector according to Claim 1, wherein the shape of the housing of the header is substantially rectangular in its cross-section. A connector according to Claim 2, wherein said guide grooves present a substantially M-shape in their cross-section. A connector according to any one of Claims 1 to 3, wherein the contacts of said socket each have a pair of mutually opposed contact pieces (21A) receiving and sandwiching the post portion of said header therebetween. A connector according to any one of Claims 1 to 4, wherein at least one (11) of the post portions of said header is shorter than the other post portions (12). A connector according to any one of Claims 1 to 5, wherein at least one of the post portions of said header is smaller width than that of the other post portions. A connector according to any one of Claims 1 to 5, wherein at least one of the post portions of said header differs from the other post portions in the position at which it protrudes from the housing of the header.

Inventors: KUMAGAI IZURU, SUZUKI MASAO, KUMAGAI, IZURU, SUZUKI, MASAO, KUMAGAI, Izuru Sunnyresidence C-105
Applicants: THOMAS & BETTS CORP, THOMAS & BETTS CORPORATION (A TENNESSEE CORPORATION)
Application year: 1996
Main classification: H01R13
IPC codes: H01R24, H01R13