JP4028621B2 - Circuit board connector - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a circuit board connector comprising a plug connector and a receptacle connector which are mounted on and connected to both circuit boards in order to connect circuits between circuit boards.
[0002]
[Prior art]
A conventional circuit board connector includes a plug connector and a receptacle connector as shown in FIGS. FIGS. 3A and 3B are perspective views of the receptacle connector 1 and the plug connector 2 as a single unit. FIG. 4 is a sectional view showing a state in which the receptacle connector 1 and the plug connector 2 are connected. A conventional example will be described with reference to FIGS. The receptacle connector 1 is a rectangular frame with a bottom made of an insulating material and has an insulating block 3 whose cross-sectional shape is formed in a U-shape and is disposed on both inner walls in the longitudinal direction at a required interval. It comprises a plurality of contacts 4. The insulating block 3 is provided with an arrangement hole 5 for arranging the contact 4 and an arrangement groove 6 subsequent to the arrangement hole 5 for the number of contacts.
[0003]
The contact 4 is provided with a contact portion 7 that comes into contact with the contact of the plug connector 2 and a connection portion 8 that is connected to a printed circuit (not shown) of the circuit board by soldering, and is formed in a substantially L shape. The contact 4 is fixed to the insulating block 3 with a plurality of protrusions 9 formed on both side edges of the press-fitting portion of the contact 4 into the arrangement hole 5 as shown in the partial sectional view of FIG. By press-fitting from the direction, the protruding portion 9 bites into the insulating block 3 and is fixed at a predetermined position.
When the receptacle connector 1 in FIG. 3 (a) is connected to the plug connector 2, as is apparent from FIG. 4, the plug connector is turned upside down so that the connection portion 8 of the contact 4 to the circuit board is on the upper side. 2 is connected. Further, the connection portion 8 of the contact 4 appearing below the insulating block 3 in FIG. 3A and the contact portion 7 appearing on the opposite side wall surface are separate contacts as is apparent from FIG. 4 things.
[0004]
The plug connector 2 shown in FIG. 3B has an insulating block 12 having a substantially E-shaped cross-section with a separation band portion 11 provided at the center, and required left and right walls of the separation band portion 11. It is composed of a plurality of contacts 13 arranged at intervals. The insulating block 12 is provided with a disposition hole 14 for disposing the contact 13 and a disposition groove 15 subsequent thereto for the number of contacts.
The contact 13 includes a contact portion 16 that contacts the contact portion 7 of the contact 4 of the receptacle connector 1 and a connection portion 17 that is connected to a printed circuit of a circuit board (not shown) by soldering, and is substantially L-shaped. Is formed. As in the example shown in FIG. 5, the contact 13 is fixed to the insulating block 12 by forming protrusions 9 on both side edges of the press-fitting portion of the contact 13 into the arrangement hole 14. The insulating block 12 is bite and fixed.
[0005]
Note that the connection portion 17 of the contact 13 that appears below the insulating block 12 in FIG. 3B and the contact portion 16 that appears on the front side of the separation band portion 11 are respectively shown in FIG. The contacts 13 that are of the same contact 13 and are arranged on the opposite side of the separation band portion 11 do not appear in FIG.
The receptacle connector 1 and the plug connector 2 are used as a state in which the connection portions 8 and 17 of the contacts 4 and 13 are soldered and integrated to a circuit board (not shown), and the circuit boards are connected in parallel. Is.
[0006]
[Problems to be solved by the invention]
However, the circuit boards are fixed to the panel of the circuit unit of the electronic device, respectively. When the receptacle connector 1 and the plug connector 2 of both circuit boards are connected, the displacement stress at the time of fitting, and both circuits Stress due to positional displacement between the substrates is directly applied to both connectors. This stress deforms the contact part of the contacts of both connectors and absorbs the tail between the contact part of the contact to the circuit board and the connector fixing part as a spring. Since the tail is provided, there is a limit to absorb the misalignment stress, causing the contacts of both connectors to be deformed, preventing normal contact and causing contact failure. There was a problem that damage occurred. In addition, the dimensional accuracy of related parts has been increased so that positional displacement of both circuit boards does not occur, and the assembly accuracy of workers during assembly work has been improved. was there.
The present invention solves the above-mentioned problems by expanding the absorption of misalignment stress due to misalignment of both connectors and misalignment between both circuit boards.
[0007]
[Means for Solving the Problems]
The connector for a circuit board according to the present invention has a strip-shaped protrusion at the center of a rectangular base, and a plurality of mounting grooves and wirings for contact mounting provided through the base from both side surfaces of the strip-shaped protrusion. A first insulating block having a hole, and a contact portion that is press-fitted and held in the mounting groove and the mounting hole of the first insulating block, and is in contact with the mating contact at one end. A plug connector having a plurality of substantially L-shaped contacts each having a connection portion connected to the circuit board at the other end;
A bottomed frame in which a recess into which the belt-like protrusion of the first insulating block is inserted is formed, and a plurality of contacts for arranging contacts provided from the inner periphery in the longitudinal direction of the frame through the bottom A second insulating block having a plurality of guide grooves for arranging contacts, and a plurality of substantially ring-shaped contacts at a required interval ; Consisting of
Each of the substantially ring-shaped contacts has a contact portion that is brought into contact with the mating contact at one end portion, and the one end portion is press-fitted into a disposition hole of the second insulating block, and is fixed to the other end portion. A connection portion fixedly connected to the circuit board is formed, and the other end portion is provided in a guide groove provided on an outer bottom surface portion of the second insulating block, and the second insulating block is perpendicular to the longitudinal direction thereof. It is guided and positioned at an interval where it can move .
[0008]
DETAILED DESCRIPTION OF THE INVENTION
FIGS. 1 and 2 show an embodiment of a circuit board connector according to the present invention. FIGS. 1A and 1B are perspective views of a plug connector 21 and a receptacle connector 22 as a single unit. FIG. 2 is a sectional view showing a state in which both the connectors are connected.
The plug connector 21 is arranged at a required interval on both sides of an insulating block 23 having a substantially T-shaped cross section formed of an insulating material and a belt-like protrusion 25 provided at the center of the base 24 of the insulating block 23. A plurality of contacts 26 are provided. The insulating block 23 is provided with an arrangement hole 27 for arranging the contact 26 and an arrangement groove 28 subsequent to the arrangement hole 28 for the number of contacts.
[0009]
The contact 26 is provided with a contact portion 29 that comes into contact with the contact of the receptacle connector 22 and a connection portion 30 that is connected to a printed circuit of a circuit board (not shown) by soldering, and is formed in a substantially L shape. . The contact 26 is fixed to the insulating block 23 in the same manner as in the example shown in FIG. 5. The protrusions 9 are formed on both side edges of the press-fitting portion of the contact 26 into the arrangement hole 27. Bites into the insulating block 23 and is fixed. When the plug connector 21 of FIG. 1A is connected to the receptacle connector 22, as is apparent from FIG. 2, the receptacle connector is turned upside down so that the connection portion 30 of the contact 26 to the circuit board is on the upper side. 22 is connected. Moreover, the connection part 30 of the contact 26 that appears below the insulating block 23 in FIG. 1A and the contact part 29 that appears on the front side of the belt-like protrusion 25 are respectively shown in FIG. The contacts 13 that are of the same contact 26 and are arranged on the opposite side of the belt-like protrusion 25 do not appear in FIG.
[0010]
A receptacle connector 22 shown in FIG. 1B is a bottomed rectangular frame made of an insulating material, and is provided with a recess 31 into which a band-like protrusion 25 of an insulating block 23 constituting the plug connector 21 is inserted. In addition, the insulating block 32 whose cross-sectional shape is formed in a U-shape, and a substantially ring shape so as to be wound from the lower side of both inner walls in the longitudinal direction to the lower surface of the outer wall through the upper edge respectively. It is comprised from the some contact 33 arrange | positioned by this space | interval. An arrangement hole 35 for arranging and fixing one end 34 of the contact 33 through the bottom from the inner periphery of the insulating block 32 is guided, and the other end 36 of the contact 33 is guided to the outer bottom surface of the insulating block 32. Guide grooves 37 are provided in both frames as many as the number of contacts.
The substantially ring-shaped contact 33 is provided with a contact portion 38 that contacts the contact portion 29 of the contact 26 of the plug connector 21 and a connection portion 39 that is connected to a printed circuit (not shown) by soldering. Yes. As in the example shown in FIG. 5, the contact 33 is fixed to the insulating block 32, and the protrusions 9 are formed on both side edges of the one end portion 34 that is a press-fitting portion into the arrangement hole 35 of the contact 33. The protruding portion 9 bites into the insulating block 32 and is fixed.
[0011]
The receptacle connector 22 which is one of the connectors for the circuit board according to the present invention is provided through the other end 36 of the contact 33 to be soldered to the printed circuit of the circuit board and the inner peripheral portion to the bottom portion of the insulating block 32. The insulating block 32 is slightly in the left-right direction of the cross-sectional view shown in FIG. 2 because it is close to the one end 34 press-fitted into the arrangement hole 35 and the contact 33 is formed in a ring shape. However, it can move parallel to the circuit board surface.
Therefore, even when a fitting deviation or a positional deviation occurs between the plug connector 21 and the receptacle connector 22, the deviation stress can be absorbed by the contacts 33 arranged on the left and right. An adverse effect on connector contacts is mitigated.
[0012]
【The invention's effect】
As described above in detail, the connector for a circuit board according to the present invention may be used when the receptacle connector and the plug connector mounted on the circuit board are misaligned due to misalignment of the circuit board. The contact formed in the ring shape of the receptacle connector allows the insulating block to be moved, and the plug connector is provided with elasticity so as to absorb the positional deviation of the circuit board. Since the accuracy of attaching the circuit board to a panel such as a circuit unit is eased, assembly work is facilitated. In addition, the deformation of the contacts of both connectors due to the mating connection when both connectors are misaligned, and the fact that normal contact is hindered are also greatly improved compared to conventional connectors. Is.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment of a circuit board connector according to the present invention.
FIG. 2 is a cross-sectional view showing a connection state of a circuit board connector according to the present invention.
FIG. 3 is a perspective view showing an example of a conventional circuit board connector.
FIG. 4 is a cross-sectional view showing a connection state of a conventional circuit board connector.
FIG. 5 is a partial cross-sectional view showing a fixing structure of a portion for fixing a contact to an insulating block.
[Explanation of symbols]
1,22 Receptacle connector 2,21 Plug connector 3,12,23,32 Insulating block 4,13,26 Almost L-shaped contact 5,14,27,35 Disposition hole 6,15,28 Disposition groove 7,16 , 29, 38 Contact portion 8, 17, 30, 39 Connection portion 11 Separating band portion 24 Base portion 25 Band-shaped protruding portion 31 Recessed portion 33 Ring-shaped contact 37 Guide groove

Claims (1)

A first insulating block having a belt-like protrusion at the center of the rectangular base and having a plurality of grooves and holes for arranging contacts provided from both side surfaces of the belt-like protrusion through the base. And is press-fitted and held in the disposition groove and disposition hole of the first insulating block, and a contact portion that is in contact with the mating contact is formed at one end and connected to the circuit board at the other end. A plug connector provided with a plurality of substantially L-shaped contacts formed with connecting portions;
A bottomed frame in which a recess into which the belt-like protrusion of the first insulating block is inserted is formed, and a plurality of contacts for arranging contacts provided from the inner periphery in the longitudinal direction of the frame through the bottom A second insulating block having a plurality of guide grooves for arranging contacts, and a plurality of substantially ring-shaped contacts at a required interval ; Consisting of
Each of the substantially ring-shaped contacts has a contact portion that is brought into contact with the mating contact at one end portion, and the one end portion is press-fitted into a disposition hole of the second insulating block, and is fixed to the other end portion. A connection portion fixedly connected to the circuit board is formed, and the other end portion is provided in a guide groove provided on an outer bottom surface portion of the second insulating block, and the second insulating block is perpendicular to the longitudinal direction thereof. A circuit board connector that is guided and positioned at a movable interval .

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