JP4028439B2 - Circuit board built-in connector - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a circuit board built-in connector in which a circuit board is incorporated in a connector housing.
[0002]
[Prior art]
A connector is generally used for electrical connection of conductors, but if a circuit board is incorporated in the connector housing, it is possible to give the connector an intelligence function (for example, to identify an address signal and perform predetermined control). It is.
[0003]
In order to assemble such a circuit board built-in connector, it is necessary to incorporate and fix the circuit board in the connector housing. In general, as a means of easily fixing the circuit board in the plastic housing, a crush rib is provided on the inner wall surface of the housing, and when the circuit board is assembled, the crush rib is crushed at the edge of the circuit board. However, the method of incorporation is known. According to this method, the circuit board can be easily fixed simply by being pushed into the housing.
[0004]
[Problems to be solved by the invention]
In the case of a circuit board built-in type connector, it is necessary to electrically connect the lead part of the connection terminal incorporated in a predetermined position of the connector housing and the terminal connection part (through hole part etc.) of the circuit board. When the board is pushed into the connector housing, it is necessary to accurately match the terminal connection portion of the circuit board with the lead portion of the connection terminal. However, if the crush ribs as described above are only provided on the inner wall surface of the connector housing, the crush ribs will not be uniformly crushed. Is difficult to accurately match with the lead portion of the connection terminal. In particular, in the case of connecting the lead part of the connection terminal into the through hole of the circuit board, if the circuit board is misaligned, the lead part of the connection terminal cannot be inserted into the through hole of the circuit board. There is a problem that it cannot be assembled into the connector housing.
[0005]
In view of the above problems, an object of the present invention is to provide a circuit board built-in connector that can accurately position a circuit board at an appropriate position when the circuit board is pushed into the connector housing and fixed. .
[0006]
[Means for Solving the Problems]
A circuit board built-in connector according to the present invention includes a connector housing having a circuit board housing space therein, a circuit board incorporated in the circuit board housing space of the connector housing, and a lead portion incorporated in the connector housing. A connection terminal connected to the circuit board,
A crush rib for fixing a circuit board is provided on at least one of the inner wall surfaces facing each other with the circuit board housing space in between, and a guide projection for guiding the circuit board to an appropriate position is provided near the crush rib ,
The crush rib and the upper end of the guide protrusion are formed so as to become lower as the distance from the inner wall surface increases.
The projecting dimension of the guide projection from the inner wall surface is set so as not to be crushed by the circuit board that is pushed in, and the projecting dimension of the crash rib from the inner wall surface is set larger than the projecting dimension of the guide projection. Yes,
It is characterized by this.
[0007]
The present invention is particularly effective when applied to a circuit board built-in type connector that is soldered to the circuit board in a state where the lead portions of the connection terminals are inserted into the through holes of the circuit board.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0009]
1 and 2 show an embodiment of the present invention. In the figure, 10 is a plastic connector housing, 12 is a circuit board incorporated in the circuit board housing space S of the connector housing 10, 14 is a pressure contact terminal incorporated on the input end side of the connector housing 10, and 16 is a connector housing. 10 is a female terminal built in the output end side.
[0010]
The connector housing 10 includes a main body 10A and a lid body 10B. The main body 10A and the lid body 10B are coupled to each other by known coupling means (not shown). The circuit board 12 and the terminals 14 and 16 are incorporated on the housing body 10A side. Necessary electronic components such as a capacitor 18 and an IC 20 are mounted on the circuit board 12. The press contact terminal 14 has a lead portion 14a, and a tip portion thereof is formed so as to rise from the bottom surface of the housing body 10A. Similarly, the female terminal 16 has a lead portion 16a, and its tip end portion is formed to rise from the bottom surface of the housing body 10A. The circuit board 12 is formed with a first through hole 22 into which the lead portion 14a of the press contact terminal 14 is inserted and a second through hole 24 into which the lead portion 16a of the female terminal 16 is inserted.
[0011]
A first partition wall 26 is formed between the press contact terminals 14 of the housing main body 10A, and first side walls 28 are formed on both sides of the press contact terminal 14 group. Each press contact terminal 14 is set at a predetermined position by the partition wall 26 and the side wall 28. Similarly, a second partition wall 30 is formed between the female terminals 16 of the housing body 10A, and second side walls 32 are formed on both sides of the female terminal 14 group. Each female terminal 14 is set at a predetermined position by the partition wall 30 and the side wall 32.
[0012]
In the housing main body 10A, a step portion 34 for supporting the circuit board 12 at a constant height in the circuit board housing space S is formed. Of the inner wall surfaces surrounding the circuit board housing space S, the first inner wall surface 36A opposed to the inner end surface 28a of the first side wall 28 (which also constitutes the inner wall surface) with the housing space S interposed therebetween is One crush rib 38A and guide protrusion 40A are formed close to each other. Similarly, the second crush rib is also applied to the second inner wall surface 36B facing the second partition wall 30 and the inner end surfaces 30a, 32a (which also constitute the inner wall surface) of the side wall 32 with the accommodation space S therebetween. 38B and the guide protrusion 40B are formed close to each other.
[0013]
As shown in FIG. 2, the crash ribs 38A and the upper ends of the guide protrusions 40A are formed obliquely so as to become lower as the distance from the inner wall surface 36A increases in order to facilitate the pushing of the circuit board 12. The upper ends of the crash rib 38B and the guide protrusion 40B are formed in the same manner. The protruding dimensions of the guide protrusions 40A, 40B from the inner wall surfaces 36A, 36B are such that the circuit board 12 that is pushed in does not crush the guide protrusions 40A, 40B, and the inner end face 28a of the first side wall 28 and the second partition. The wall 30 and the side wall 32 are set so as to abut against the inner end faces 30a, 32a and be in proper positions. On the other hand, the projecting dimensions of the crash ribs 38A, 38B from the inner wall surfaces 36A, 36B are set larger than the projecting dimensions of the guide protrusions 40A, 40B, and the thicknesses of the crash ribs 38A, 38B are crushed when the circuit board 12 is pushed. Is set to about.
[0014]
As a result, when the circuit board 12 is pushed into the accommodation space S until it hits the step 34 while crushing the crash ribs 38A and 38B, the circuit board 12 is guided to an appropriate position by the guide protrusions 40A and 40B. The lead portions 14a and 16a of the pins 14 and 16 are accurately inserted into the through holes 22 and 24, and are fixed at appropriate positions by the reaction force of the crushed crush ribs 38A and 38B. The tip portions of the lead portions 14a and 16a inserted into the through holes 22 and 24 are connected to the land portions 42 of the circuit board 12 by soldering (not shown).
[0015]
After the circuit board 12 is assembled in the housing main body 10A and the lead portions 14a and 16a of the terminals 14 and 16 are soldered to the circuit board 12, the cover body 10B is put on and the circuit board built-in connector is completed. In the state where the cover 10B is covered, as shown in FIG. 1B, the upper half of the press contact terminal 14 protrudes into the recess of the cover 10B. An electric wire 46 is press-connected to the upper half of the press contact terminal 14 by a pushing member 44. The female terminal 16 is connected to a male terminal on the equipment side. The form of the terminals 14 and 16 of the connector may be other than the above.
[0016]
In FIGS. 1 and 2, the height of the crush ribs 38A and 38B from the upper surface of the step 34 is higher than the height of the guide protrusions 40A and 40B. It may be higher. If it does in this way, after the circuit board 12 pushed into the accommodation space S is first guided to an appropriate position by the guide protrusion, the crush rib is crushed and fixed.
[0017]
Moreover, although the said embodiment demonstrated the case where the crush rib and the guide protrusion were formed in one of the inner wall surfaces which oppose on both sides of the storage space S, a crush rib and a guide protrusion are both on the opposite inner wall surface (for example, 1st May be formed on both the inner wall surface 36A and the inner end surface 28a of the first side wall 28).
[0018]
【The invention's effect】
As described above, according to the present invention, the circuit board can be easily fixed by simply pushing the circuit board into the circuit board housing space of the connector housing, and the circuit board can be accurately positioned at an appropriate position in the connector housing. Can do. For this reason, the lead portion of the connection terminal and the terminal connection portion of the circuit board can be exactly matched, and the assembly of the circuit board built-in connector can be easily performed with high accuracy.
[Brief description of the drawings]
1A and 1B show an embodiment of a circuit board built-in connector according to the present invention, in which FIG. 1A is a plan view with a lid removed, and FIG. 1B and FIG. Sectional drawing in the state which covered the cover in a B line and CC line.
2A is a cross-sectional view and FIG. 2B is a perspective view showing a relationship between a crash rib and a guide protrusion in a circuit board built-in connector according to the present invention.
[Explanation of symbols]
10: Connector housing
10A: Housing body
10B: Lid
12: Circuit board S: Circuit board accommodation space
14: Pressure contact terminal
14a: Lead part
16: Female terminal
16a: Lead part
22, 24: Through hole
26: First partition wall
28: First side wall
28a: inner end face
30: Second partition wall
30a: Inner end face
32: Second side wall
32a: Inner end face
34: Step
36A, 36B: Inner wall surface
38A, 38B: Crash rib
40A, 40B: Guide protrusion
46: Electric wire

Claims (2)

A connector housing having a circuit board housing space therein, a circuit board incorporated in the circuit board housing space of the connector housing, and a connection terminal incorporated in the connector housing and having a lead portion connected to the circuit board. A circuit board built-in connector provided,
A crush rib for fixing a circuit board is provided on at least one of the inner wall surfaces facing each other with the circuit board housing space in between, and a guide projection for guiding the circuit board to an appropriate position is provided near the crush rib ,
The crush rib and the upper end of the guide protrusion are formed so as to become lower as the distance from the inner wall surface increases.
The projecting dimension of the guide projection from the inner wall surface is set so as not to be crushed by the circuit board that is pushed in, and the projecting dimension of the crash rib from the inner wall surface is set larger than the projecting dimension of the guide projection. Yes,
A circuit board built-in type connector. The connector according to claim 1, wherein the lead portion of the connection terminal is connected to the circuit board in a state of being inserted into the through hole of the circuit board.

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