JP3895837B2 - Electrical connector fixing bracket - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a fixture for an electrical connector attached to a circuit board in an electrical device.
[0002]
[Prior art]
The structure of the conventional electrical connector 60 will be described with reference to FIG.
FIG. 3A is a partial perspective view of a conventional electrical connector and a substrate, and FIG. 3B is a perspective view of a conventional fixture.
The conventional electrical connector 60 is mainly composed of an insulator 12, a contact 14, and a fixture 62.
The insulator 12 is an electrically insulating plastic and is manufactured by a known technique such as injection molding. A predetermined number of the contacts 14 are inserted and fixed to the insulator 12.
The contact 14 is made of metal and is manufactured by a known press working or the like. The contact 14 is composed of three parts: a connection part 22 connected to the land 30 of the substrate 24, a fixed part fixed to the insulator 12, and a contact part contacting the contact of the mating connector.
[0003]
The fixing bracket 62 is also made of metal, and is manufactured by a known press working or the like. As shown in FIG. 3B, the fixing bracket 62 includes a press-fit portion 36 that is fixed to the insulator 12, a fixing leg portion 32 that is inserted into the mounting hole 28 of the substrate 24, a press-fit portion 36, and the fixing leg portion 32. The connecting portion 38 is connected.
In general, when the electrical connector is fixed to the substrate 24, the fixing bracket 62 is often used.
By adopting the above-described configuration, the fixing bracket 62 temporarily fixes the electrical connector 60 (that is, firmly fixes the electrical connector so that it does not float off the board during soldering), and a mating connector (not shown). This is used in order to prevent the force applied to the contact portion 22 from being applied to the contact connecting portion 22 as much as possible.
[0004]
[Problems to be solved by the invention]
As shown in FIG. 3A, the mating connector is preferably inserted into the electrical connector 60 in the direction of the arrow “B”. However, when the mating connector is fitted to the electrical connector 60, it is often damaged in the vertical and horizontal directions. That is, when the mating connector is fitted to the electrical connector 60, the force applied to the electrical connector 60 is not only the horizontal shearing force but also the force to be peeled up and down.
When a force for peeling up and down is applied, if the soldering position of the fixing bracket 62 is deeper than the soldering position of the contact 14 (connecting portion 22), it is easy to apply a load to the contact 14 when it is twisted upward. If the soldering position of the fixing bracket 62 is closer than the soldering position of the contact 14 (connecting portion 22), the contact 14 is likely to be loaded when it is twisted downward.
Therefore, depending on the soldering position (connecting portion 22) of the contact 14 and the soldering position of the fixing bracket 62, it is easy to apply a load to the soldered portion of the contact 14 (connecting portion 22). There is a problem to be solved such that the soldering portion (connecting portion 22) of the metal is damaged.
If the connection portion 22 of the contact 14 is damaged, there are problems such as a contact failure and a short circuit when the damaged contact 14 contacts the adjacent contact 14.
Further, when the connection portion 22 of the contact 14 is broken, there is a problem that the electrical connector 60 itself needs to be replaced or the substrate 24 itself needs to be replaced. Therefore, it leads to a cost increase.
[0005]
The present invention has been made to solve the above-described problems. Even when the mating connector is inserted in the vertical direction, the electrical connector 10 is less likely to be loaded on the connection portion of the electrical connector contact. The purpose is to provide a fixing bracket.
[0006]
[Means for Solving the Problems]
The object is an electrical connector 10 comprising a contact 14, an insulator 12 for holding and fixing the contact 14, and a fixing bracket 20 for fixing the insulator 12 to a substrate 24, wherein the fixing bracket 20 is the insulator. The fixing bracket of the electrical connector 10 comprising a press-fit portion 36 fixed to the base plate 12, a fixing leg portion 32 inserted and fixed in the mounting hole 28 of the substrate 24, and a connecting portion 38 connecting the fixing leg portion 32 and the press-fit portion 36. 20, a land connection portion 34 is provided on the connection portion 38 side of the press-fitting portion 36 so as to protrude in the same direction as the fixing leg portion 32 and can be connected to the substrate 24, and the contact 14 is connected to the substrate 24. This can be achieved by positioning the connecting portion 22 between the fixing leg portion 32 and the land connecting portion 34.
[0007]
Further, the land connecting portion 34 has a substantially L shape. With such a shape, it becomes easy to connect to the fixing metal land 26 of the substrate 24 and, at the same time, no mounting hole is provided in the substrate 24, so that the pattern of the substrate 24 is not damaged.
Note that a fixing leg A42 protruding in the same direction as the fixing leg 32 is provided in the approximate center of the press-fitting part 36. By providing the fixing leg portion A42, the electrical connector 10 can be fixed more firmly, and at the same time, the connecting portion 22 of the contact 14 is reliably disposed between the fixing leg portion 32 and the fixing leg portion A42. As a result, no load is applied to the connection portion 22 of the contact 14.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
The electrical connector 10 of the present invention will be described with reference to FIGS. 1 and 2.
FIG. 1A is a partial perspective view of the electrical connector 10 and the substrate 24 of the present invention, and FIG. 1B is a perspective view of the fixture 20 of the present invention. FIG. 2A is a partial perspective view of the electrical connector 10 and the board 24 using another fixing bracket 201 of the present invention, and FIG. 2B is a perspective view of the fixing bracket 201 of another example of the present invention. It is.
The electrical connector 10 of the present invention is also mainly composed of an insulator 12, a contact 14, and fixtures 20 and 201.
There are various sizes of the electrical connector 10, but in this embodiment, the length is 30 mm, the width is 20 mm, and the thickness is about 10 mm. The length varies depending on the contact pitch dimension and the number of cores. In this embodiment, the contact pitch is 1.27 mm and the number of cores is 20. The contact pitch may be 0.5 to 2 mm, the number of cores may be 20 to 200, and the like is designed as appropriate depending on the function, size, and the like.
[0009]
The structure of each component will be described with reference to the drawings.
First, the fixture 20 which is a point part of this invention is demonstrated based on FIG.
The fixture 20 is also made of metal as in the prior art, and is manufactured by a known press working. As the material of the fixing metal 20, spring property, mechanical strength, and the like are required, so brass, phosphor bronze, beryllium copper, and the like are generally used, but brass is preferable in consideration of economy.
The insulator 12 is fixed to the fixture 20 by press-fitting or insert molding. This fixing metal 20 is inserted and fixed to the insulator 12 from the direction of the arrow “A” in FIG.
[0010]
The fixing bracket 20 includes a press-fit portion 36 fixed to the insulator 12, a land connection portion 34 connected to the fixing bracket land 26 of the substrate 24, a fixing leg portion 32 fixed to the substrate 24, and a press-fit portion 36. It is comprised from the connection part 38 which connects the leg part 32 for fixation.
Each component will be described.
The press-fitting part 36 is used to fix the fixture 20 to the insulator 12 by press-fitting it into the insertion hole of the flange part 18 of the insulator 12 using a jig (not shown) or the like. The shape and size of the press-fit portion 36 are appropriately designed according to the shape and size of the insertion hole of the insulator 12, the strength of the flange portion 18 of the insulator 12, the projected area on the substrate 24, the required strength, and the like.
On the opposite side of the press-fit portion 36, there is provided a fixing leg portion 32 protruding in a direction rotated approximately 90 degrees. The fixing leg 32 serves to temporarily fix the electric connector 10 to the mounting hole 28 of the board 24 and to fix the electric connector 10 to the board 24 completely after soldering such as reflow. In consideration of the role, this embodiment has a bifurcated shape with springiness. If the role can be satisfied, it may be one instead of two-forked.
[0011]
A connecting portion 38 for connecting the press-fit portion 36 and the fixing leg portion 32 is provided between the press-fit portion 36 and the fixing leg portion 32.
On the connecting portion 38 side of the press-fit portion 36, a land connection portion 34 having a substantially L shape projecting in the same direction as the fixing leg portion 32 is provided. The land connection portion 34 is for fixing the electrical connector 10 more firmly by soldering at the same time as the contact 14 and the fixing leg portion 32 at the time of reflow, and a mating connector (not shown). This is to eliminate the load on the contact 14 during insertion and removal. In the present embodiment, the land connection portion 34 having a substantially L shape is illustrated in consideration of the pattern of the substrate 24. However, the land connection portion 34 may be the same as the fixing leg portion 32 as long as the above role can be satisfied.
Further, in the present embodiment, the land connecting portion 34 is bent in an L shape so as to face outward when the fixing bracket 20 is fixed to the insertion hole of the insulator 12. Any material can be used as long as it can be fixed to the land 26, and it may be bent in the opposite direction or may have a substantially “U” shape.
The size of the land connection portion 34 is appropriately designed in consideration of preventing the contact 14 from being loaded and the size of the electrical connector 10.
[0012]
Next, the insulator 12 will be described.
This insulator is also an electrically insulating plastic as in the prior art, and is manufactured by a known injection molding or the like. As the material of the insulator 12, heat resistance and moldability are required, so PBT, PET, PA, PPS, LCP, etc. are used. LCP is good when considering moldability and step stability.
The insulator 12 mainly includes a main body portion 15, a fitting portion 16, and a flange portion 18.
The body portion 15 of the insulator 12 is provided with a hole into which a required number of contacts 14 are inserted. The contact 14 is held and fixed in the hole by press-fitting or patching (lance).
[0013]
A fitting portion 16 protruding in the opposite direction from which the connection portion 22 of the contact 14 protrudes is provided at a substantially central portion of the main body portion 15 of the insulator 12. The fitting portion 16 is a portion that fits with the mating connector.
Further, flange portions 18 projecting in the opposite direction to the fitting portion 16 are provided on both sides in the length direction of the main body portion 15 of the insulator 12. The flange portion 18 is provided with an insertion hole to which the fixing bracket 20 is fixed. The size of the insertion hole is appropriately designed in consideration of the strength of the insulator 12 when the fixing bracket 20 is fixed.
Further, the insulator 12 is disposed so as to cover the connection portion 22 of the contact 14 with the main body portion 15 and the flange portion 18.
[0014]
Finally, the contact 14 will be described.
The contact 14 is fixed to the insulator 12 by press fitting, patching (lance), or the like.
This contact 14 is also made of metal as in the prior art and is manufactured by a known press working. As a material for the contact 14, beryllium copper, phosphor bronze, or brass having generally good spring properties is used. In consideration of cost and conductivity, brass is preferable.
The contact 14 is also composed of three parts: a connection part 22 connected to the land 30 of the substrate 24, a fixing part fixed to the insulator 12, and a contact part contacting the contact of the mating connector.
In the present embodiment, the surface mounting type (SMT type) is illustrated, but an L-shaped dip type may be used.
[0015]
Based on FIG. 2, another fixture 201 will be described.
The fixing bracket 201 includes a press-fit portion 36 fixed to the insulator 12, a land connection portion 34 connected to the fixing bracket land 26 of the substrate 24, a fixing leg portion 32 and a fixing leg portion fixed to the substrate 24. It is comprised from A42, the press-fit part 36, and the connection part 38 which connects the leg part 32 for fixation.
Description of the same parts as those of the fixing metal fitting 20 in FIG. 1B will be omitted, and only the structures of the different parts will be described.
The difference from the fixture 20 is that the fixture 201 is provided with a fixing leg A42. The fixing leg portion A42 is provided so as to protrude in the same direction as the fixing leg portion 32 substantially at the center of the press-fitting portion 36.
The role of the fixing leg A42 is also to reduce the load applied to the contact 14 when the mating connector is inserted / removed, as in the case of the fixing leg 32, and to more securely fix the electrical connector 10 to the board 24. It is.
The fixing leg A42 has a bifurcated shape in this embodiment in order to provide a spring property similarly to the fixing leg 32. However, any shape may be used as long as the above role can be satisfied. But you can.
[0016]
【The invention's effect】
The present invention can obtain the following effects by adopting the above-described structure.
A land connection portion 34 is provided on the connecting portion 38 side of the press-fit portion 36 so as to protrude in the same direction as the fixing leg 32 and can be connected to the substrate 24. The connection portion 22 of the contact 14 to the substrate 24 is used for the fixing. Since it is positioned between the leg portion 32 and the land connection portion 34, it is difficult to apply a load to the connection portion 22 of the contact 14 even if the connector is squeezed in the vertical direction when the mating connector is fitted.
By making the land connection portion 34 substantially L-shaped, it becomes easier to connect to the fixing metal land 26 of the substrate 24 and, at the same time, no mounting holes are provided in the substrate 24. It will not hurt.
-By providing the fixing leg A42 projecting in the same direction as the fixing leg 32 at the substantially center of the press-fitting part 36, the electric connector 10 can be fixed more firmly and at the same time with a reliable contact Since the 14 connecting portions 22 can be disposed between the fixing leg portion 32 and the fixing leg portion A 42, no load is applied to the connecting portion 22 of the contact 14.
Since it is difficult to apply a load to the connection portion 22 of the contact 14, the connection portion 22 of the contact 14 is not damaged, and it is not necessary to replace the connector 10 itself or the board 24 itself.
-Since the connection part 22 of the contact 14 is no longer damaged, contact failure or short-circuit does not occur.
[Brief description of the drawings]
FIG. 1A is a perspective view of an electrical connector of the present invention and a partial perspective view of a substrate.
(B) It is a perspective view of the fixing tool of this invention.
2A is a perspective view of an electrical connector using another fixture of the present invention and a partial perspective view of a substrate. FIG.
(B) It is a perspective view of the fixture of another example of this invention.
FIG. 3A is a perspective view of a conventional electrical connector and a partial perspective view of a substrate.
(B) It is a perspective view of the conventional fixing tool.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10, 60 Electrical connector 12 Insulator 14 Contact 15 Body part 16 Fitting part 18 Flange part 20, 201, 62 Fixing bracket 22 Connection part 24 Substrate 26 Fixing land 28 Mounting hole 30 Land 32 Fixing leg 34 Land Connection portion 36 Press-fit portion 38 Connection portion 40 Mounting hole A
42 Fixing leg A

Claims (3)

An electrical connector comprising a contact, an insulator for holding and fixing the contact, and a fixing bracket for fixing the insulator to the substrate, wherein the fixing bracket is fixed to the press-fitting portion and the mounting hole of the substrate. In a fixing bracket of an electrical connector comprising a fixing leg portion to be inserted and fixed, and a connecting portion connecting the fixing leg portion and the press-fitting portion,
A land connecting portion that protrudes in the same direction as the fixing leg on the connecting portion side of the press-fit portion and can be connected to a substrate is provided, and the connecting portion of the contact to the substrate is the fixing leg and the An electrical connector fixing bracket characterized by being positioned between land connection portions. 2. The electric connector fixing bracket according to claim 1, wherein the land connection portion is substantially L-shaped. The fixing bracket for an electrical connector according to claim 1 or 2, wherein a fixing leg A protruding in the same direction as the fixing leg is provided substantially at the center of the press-fitting portion.

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