JP4076314B2 - Electrical connector with fixing bracket - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electrical connector having a fixture.
[0002]
[Prior art]
As this type of electrical connector, the one disclosed in JP-A-9-139242 is known.
[0003]
In this known connector, as shown in FIG. 9 of the accompanying drawings, a plurality of terminals 51 are implanted in the housing 50, and the terminals 51 are bent and extended toward the side at the bottom portion of the housing. 51A. In addition, a fixing bracket 52 having strength is attached in the vicinity of the end portion in the longitudinal direction of the housing 50. The fixing metal 52 also has leg portions 52A that extend laterally at the bottom position of the housing. As shown in the upper part of the drawing, the fixing bracket 52 has a mounting portion 53 having a complicated shape, and this mounting portion is press-fitted into a corresponding groove of the housing and held by the housing 50.
[0004]
In use, the connector is disposed on an attachment surface to be attached, for example, on the surface of the circuit board, and the connection portion 51A of the terminal 51 and the leg portion 52A of the fixing bracket 52 are in contact with the surface of the circuit board. The connecting portion 51A is soldered to the corresponding circuit portion to be contacted, and the leg portion 52A is soldered to the corresponding portion. The connector is held on the circuit board by fixing the legs 52A of the fixing metal 52 with solder.
[0005]
[Problems to be solved by the invention]
However, the known connector of FIG. 9 has some problems to be solved due to the need for a separate fixing bracket. First, fixing fixtures must be prepared, the number of parts is increased, the number of processes and assembly are complicated, and the cost is increased. Next, the fixing bracket needs to be positioned at a certain distance from the terminal in relation to the assembling work, and the size of the connector increases accordingly.
[0006]
Furthermore, since the manufacturing process of the terminal and the fixing bracket is different, the management of the dimensions is also different. When the connector is mounted on the circuit board, a step is generated between the terminal and the fixing bracket, and the flatness with respect to the circuit board is increased. There is a problem that they do not match.
[0007]
An object of the present invention is to provide an electrical connector that solves such a problem, has a mounting bracket that is inexpensive and can be miniaturized, has the same flatness with respect to the circuit board, and can be reliably mounted on the circuit board. And
[0008]
[Means for Solving the Problems]
Electrical connector according to the present invention, be held multiple terminals and a plurality of mounting brackets to the housing, as the other end side connecting portion of the terminal having a contact portion at one end, and the burial section of the housing at one end other end side of the fixing bracket is made to lie on the mounting surface of the connection object extends outside the housing, respectively as legs for fixing with.
[0009]
In such an electrical connector, according to the present invention, the metal plate is punched out, and a plurality of strips formed by extending a plurality of the same shape at regular intervals in the same row and a fixed metal fitting are integrally molded with the housing in an array state. It is held by molding , and both the terminal and the fixture are straightly adjacent to the intermediate part at one end side than the intermediate part and the intermediate part bent in a substantially L shape between the one end side and the other end side It has been made to have a curved portion extending from the parts and the straight-shaped portion, one end side of the pin is positioned to face the receiving portion of the recess shape of the housing for receiving the mating connector as the contact portion, of the fixing bracket burial section is located in the arrangement direction both end sides of the terminal, is held buried in the end wall of the housing forming the both ends of the receiving portion, the buried portion includes a straight portion adjacent the intermediate portion it is characterized in that out.
[0010]
According to the present invention having such a configuration, since it is formed in the same shape as the terminal and the fixing bracket, Ru are densely arranged on the same level. One end side of the terminal faces the receiving portion, in contact with terminals of the mating connector, also buried portion of the fixing bracket from the middle portion of the one end portion, the housing forming the ends of the receiving portion end wall It is buried and held in the wall to reinforce the holding of the fixing bracket. On the other hand, the other end side of the terminal and the fixture is formed as a connection portion, and is outside the housing and connected to a connection target such as a circuit board by solder. Since the terminals and the fixtures form an array positioned at regular intervals, they are arranged densely and the connector is miniaturized in the array direction. At that time, the fixing brackets are positioned at both ends of the arrangement range, but since the terminals and the fixing brackets are formed in the same shape, the flatness with respect to the circuit board matches, and the fixing to the circuit board is reliable. A connection is obtained. Two arrays can be provided symmetrically.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 8 of the accompanying drawings.
[0016]
FIG. 1 shows a connector according to an embodiment of the present invention. FIG. 1 (A) is a partially broken plan view of the connector, (B) is a front view, and (C) is a side view.
[0017]
A connector 1 shown in FIG. 1 has a substantially rectangular parallelepiped shape, and a plurality of terminals 3 and a fixture 4 are held by a housing 2 made of an insulating material. The housing 2 is formed in a horizontally long shape as seen in FIGS. 1A and 1B, and terminals 3 and fixing brackets 4 are arranged at equal intervals in the longitudinal direction on both sides thereof. Two fixing brackets 4 are provided at both ends in the arrangement direction.
[0018]
The housing 2 is opened upward, and a receiving portion 5 for receiving a mating connector is formed in a bottomed concave shape. In the longitudinal direction of the connector in the terminal arrangement direction, an introduction taper portion 5A for facilitating the reception of the mating connector is provided on the upper edges of both ends of the receiving portion 5.
[0019]
The terminal 3 is disposed along the opposing inner edge extending in the longitudinal direction of the receiving portion 5, and the fixing bracket 4 is positioned on both ends thereof. The terminals 3 and the fixtures 4 have the same shape and dimensions, and are made of the same metal plate at the same time from the same metal plate. For example, in the case of FIG. 1, as shown in FIG. 2, two points having a series of strips A2 that are punched out of a metal plate and extend in a comb-teeth shape from the strip-shaped carrier A1 at a constant interval p. A member indicated by a chain line is formed and bent as shown by a solid line. These strips A2 are used as terminals and as fixtures. This bending process is performed before these strips A2 are held in the housing. The carrier A1 may be disconnected before being held by the housing, or may be disconnected after the holding.
[0020]
Thus, since the terminal 3 and the fixture 4 are the same shape, the terminal 3 is demonstrated regarding the shape here. As shown in FIG. 3A, the terminal 3 is bent substantially in an L shape, and has a straight contact portion 3A on one end side and a straight connection portion 3B on the other end side. The contact portion 3A faces inward of the receiving portion 5 of the housing and protrudes on the same surface as the receiving portion or slightly protrudes, and the upper end portion is curved in a substantially semicircular shape to form an introduction portion 3C. As can be seen from FIG. 1A and FIG. 2, the introduction portion 3C is wider than the other portions. The connecting portion 3B extends horizontally from the intermediate portion 3D to the other end bent slightly in a crank shape, and is positioned at substantially the same level as the bottom surface 2A of the housing 2. The bottom surface 2A of the housing is disposed on the circuit board. When in contact with the surface of the corresponding fixing portion of the circuit board. In the fixing metal 4 having the same shape as the terminal 3, as shown in FIG. 3B, the portion corresponding to the connecting portion 3B of the terminal 3 becomes a fixing leg portion 4B, and the connecting portion 3B of the terminal 3 The flatness with respect to the circuit board is the same as the leg portion 4B of the fixture 4 (becomes on the same plane).
[0021]
In the present embodiment, as shown in FIG. 2, the terminal 3 and the fixture 4 are connected to the carrier A <b> 1 in a bent shape and are arranged in a molding die (not shown). 2 and is held by the housing 2, and then the carrier A1 is cut off to take a form as shown in FIGS. After the molding, the contact portion 3A of the terminal 3 is located on the same surface or slightly protruding from the inner surface of the receiving portion 5 as described above (see FIG. 3A), and the fixing bracket 4 is located above the intermediate portion. A portion (a portion corresponding to a portion extending from the intermediate portion of the terminal 3 to the introduction portion 3C) is buried in the wall portions at both ends of the housing 2 in the terminal arrangement direction , and is firmly held by the housing 2 (FIG. 3 ( See B))).
[0022]
On the other hand, as shown in FIG. 4, the mating connector 10 has terminals 12 implanted in the housing 11. In this form, the terminal 12 is obtained by punching a metal plate parallel to the paper surface of FIG. 4 into the shape shown in the figure, and has a C-shaped contact portion 12A having elasticity, a locking 12B having locking protrusions, A leg portion 12 </ b> C extending horizontally outside the housing 11 is provided. The housing 11 has slits 13 formed at positions corresponding to the arrangement positions of the terminals 3 of the connector 1, and the terminals 12 are inserted into the slits 13 from above in FIG. 4. When the locking portion 12B is press-fitted into the slit, the locking protrusion 12B prevents the locking protrusion 12B from coming off from a predetermined position.
[0023]
In use, the connection portion 3B of the terminal 3 and the leg portion 4B of the fixing bracket 4 are soldered to the corresponding circuit portion and the fixing portion of the circuit board, respectively, and the connector 12 of the connector 1 of the present invention is connected. 12C is soldered to the corresponding circuit portion of the circuit board. Thus, the connector of the present invention obtains a fixing force on the circuit board even by soldering at the connection portions 3B of many terminals, but the fixing metal 4 firmly held by the housing at the portions 4A, 4C, 4D. Most fixing force can be secured by soldering at the leg 4B. Both circuit boards are electrically connected by elastic contact between the terminal contact portions 3 A and 12 A when the connectors 1 and 10 are fitted together.
[0024]
The present invention is not limited to the above-described forms, and other forms are possible. For example, in the example of FIGS. 1 to 4, the terminals and the fixing metal fittings are held in the housing by integral molding with the housing, but these can be press-fitted into the housing and attached. FIGS. 5 (A) and 5 (B) show the situation at the positions corresponding to FIGS. 3 (A) and 3 (B), respectively, and each part of the terminal and the fixing bracket is also indicated by the same reference numerals as in FIG. Yes. The terminal 3 press-fitted from below in FIG. 5A is supported by both surfaces of the slit 5 </ b> A of the housing 2 (opposing surfaces parallel to the paper surface), and the contact portion 3 </ b> A faces the receiving portion 5. Further, the fixing bracket 4 is held on the left and right end surfaces of the slit by using the elasticity of the portion 4A by being press-fitted into the slit 5A from below.
[0025]
In the example of FIG. 6, the shape of the contact portion 3 </ b> A of the terminal 3 is different from that of FIG. 5, and the terminal and the fixture are held by integral molding as in FIGS. 1 to 4. Show. As shown in FIG. 6A, the terminal 3 has an S-shaped contact portion 3A that extends along the bottom of the receiving portion 5 of the housing 2 and is bent upward. The intermediate portion 3D is bent in a U-shape, and strengthens the holding force by molding with the housing. And the connection part 3B is extended horizontally from the housing lower part. On the other hand, all of the fixing brackets 4 are integrally molded with the housing except for the leg portions 4B extending outside the housing, and are firmly held.
[0026]
The present invention can also be applied to the mating connector type shown in the embodiment of FIGS. In the connector of FIG. 7, terminals not shown are exactly the same as the terminals of the connector of FIG. 7, the fixing bracket 22 having the same form as the terminal 12 in FIG. 4 has a curved elastic press-fit portion 22A, a locking portion 22B provided with a locking projection, and a leg portion 22C. . The elastic press-fit portion 22A, the locking portion 22B, and the leg portion 22C of the fixing bracket 22 correspond to the contact portion 12A, the locking portion 12B, and the connection portion 12C of the terminal 12 in FIG. 7 is press-fitted into the corresponding groove 11A of the housing 11, and thus the fixing fitting 22 is firmly fixed by press-fitting both the elastic press-fit portion 22A and the locking portion 22B into the housing. Retained.
[0027]
Furthermore, the present invention can be applied to a connector of a type in which the contact portion of the terminal protrudes from the side surface of the housing. For example, as shown in FIG. 8, step portions are formed on both side portions of the housing 31 , and a window portion 31 </ b> B is formed on the step portion side surface 31 </ b> A, and the contact portion 3 </ b> A of the terminal 3 projects therefrom. The fixing metal 4 is made in exactly the same shape as the terminal 3 and the other part is buried in the housing by integral molding with the housing except that the leg part 4B corresponding to the connecting part 3B of the terminal 3 protrudes outside the housing. Is retained.
[0028]
In the present invention as described above, the number of terminals and fixing metal fittings can be easily changed only by changing the size of the receiving portion of the housing at the time of molding. That is, when a large fixing force is required for the fixing bracket, the number of terminals can be slightly reduced to increase the number of fixing brackets, and when the fixing force may be small, all terminals can be used. it can.
[0029]
If you want to change after molding, mold the housing with the housing holding part of the fixing bracket open, and use only the required number of fixing brackets as a fixing bracket by press-fitting additional holding members. If is left open, it can be used as a terminal. And when a fixture is unnecessary, all fixtures can be used as terminals.
[0030]
【The invention's effect】
As described above, according to the present invention, the fixing bracket has the same shape as the terminal, and the buried portion of the portion from the intermediate portion to the one end side of the fixing bracket is formed at both ends of the receiving portion in the longitudinal direction of the connector corresponding to the terminal arrangement direction. Since it is embedded in the end wall of the housing and firmly held by the housing, the types of parts that make up the connector are reduced, so that the fixture and terminal can be molded and assembled simultaneously in the same mold. Thus, the cost of the connector can be reduced. In addition, since the fixing bracket and the terminal are similarly assembled at the same time, they can be arranged close to each other and the connector can be miniaturized in the arrangement direction. In addition, since the fixing metal fitting and the terminal are formed in the same shape, the flatness with respect to the circuit board matches, and a reliable mounting on the circuit board can be obtained.
[Brief description of the drawings]
1A and 1B show a connector according to an embodiment of the present invention, in which FIG. 1A is a plan view, FIG. 1B is a front view, and FIG.
FIG. 2 is a perspective view of the connector of FIG. 1 and a fixing bracket before insertion into a housing.
3 is a cross-sectional view of the connector of FIG. 1, in which (A) is a terminal position, and (B) is a cross-section at a fixing bracket position.
4 is a cross-sectional view of the connector and the mating connector of FIG.
5A and 5B are cross-sectional views of a connector according to another embodiment of the present invention, in which FIG. 5A is a terminal position and FIG. 5B is a cross-section at a fixing bracket position.
6A and 6B are cross-sectional views of a connector according to still another embodiment of the present invention, where FIG. 6A is a terminal position, and FIG. 6B is a cross-section at a fixing bracket position.
FIG. 7 is a cross-sectional view of a connector according to still another embodiment of the present invention.
FIG. 8 is a partially broken cross-sectional view of a connector according to still another embodiment of the present invention.
FIG. 9 is a perspective view of a conventional connector.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Connector 2 Housing 3 Terminal 3A Contact part 3B Connection part 4 Fixing metal fitting 4B Leg part 5 Receiving part 22 Fixing metal fitting A1 Carrier A2 Strip

Claims (2)

A plurality of terminals and a plurality of mounting brackets to the housing be held, as the other end side connecting portion of the terminal having a contact portion at one end and the other end side of the pinned fitting on one end side has a buried portion of the housing For electrical connectors that extend out of the housing and are located on the mounting surface to be connected as leg portions for use, they are made by punching metal plates and extending them to the same shape at regular intervals in the same row The terminals and fixing brackets formed from the strips are held in an integrated state by molding with the housing in an arrayed state, and both the terminals and the fixing brackets are bent in an approximately L shape between one end side and the other end side. been have been made to have an intermediate portion and a curved portion extending from the straight portions and the straight-shaped portion adjacent the intermediate portion at one end than the intermediate portion, the mating connector one end side of the terminal as a contact portion For the acceptance of Located to face the receiving portion of the recess shape of the housing, burial section of the fixing bracket is located in the arrangement direction both end sides of the terminal, is held buried in the end wall of the housing forming the ends of the receiving portion An electrical connector having a fixing bracket, wherein the buried portion includes a straight portion adjacent to the intermediate portion .   The electrical connector having a fixture according to claim 1, wherein two arrays are provided symmetrically.

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