JPH10172632A - Electrical connector - Google Patents

Abstract

(57) [Problem] To provide an electric connector that can be stably mounted on a board without increasing the weight of the connector and that can be easily fixed to the board. obtain. A right-angle connector includes a housing, a plurality of contacts aligned and held in the housing in a lateral direction, and a balance weight attachable to the housing. . The housing 10 has a fitting portion that can be fitted with a mating connector and a placement bottom surface that can be placed on the board K, and is formed to extend in the left-right direction. The balance weight 20 is formed in the balance weight holding hole 19 formed in the housing 10 on the side opposite to the center of gravity of the entire housing 10 in the front-rear direction with respect to the center position of the mounting bottom surface in the front-rear direction.
It is configured so that it can be inserted and removed freely.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrical connector mounted on a substrate, and more particularly to an electrical connector formed to extend in the left-right direction while holding a plurality of contacts.

[0002]

2. Description of the Related Art A right angle type connector 5 as shown in FIG.
And a plurality of contacts 60 aligned and held on the printed circuit board K. In this right angle type connector 5, a guide housing 52, which is a fitting portion with a mating connector, is formed to protrude forward of a housing body 51. Then, the housing 50 is attached (fixed) to the printed board K in a state where the bottom surface 51a of the housing body 51 is in contact with the surface of the printed board K.

The right-angle connector 5 is mounted on the printed circuit board K by moving the connector 5 to a soldering device (not shown). The fixing plate 58 and the lead portion 6 of the contact 60 are arranged.
4 is soldered (surface mounted) to a fixing (ground) pattern or a wiring pattern formed on the surface of the printed board K.

[0004]

In the right angle type connector 5 configured as described above, a metal shield cover (shell) 53 is also attached so as to cover the outer periphery of the guide housing 52 formed to protrude forward. Therefore, the center of gravity of the entire right angle type connector 5 is located ahead of the center position of the bottom surface 51a in the front-rear direction. For this reason, if it is simply placed on the printed board K, it falls forward as indicated by the arrow T. Further, even if the center of gravity is deviated, even if the center of gravity is unbalanced, there is a risk of falling due to the vibration at the time of conveyance by the belt conveyor to the soldering device or the influence of hot air at the time of reflow.

[0005] In particular, in order to more reliably make contact with the pattern formed on the printed board K, the fixing plate 58 and the lead portion 62 are provided with a spring property so as to project below the bottom surface 51a. When mounted on the housing 50, the bottom surface 51a when placed on the printed circuit board K
, The contact area with the printed circuit board K is reduced, so that the right-angle connector 5 is more likely to fall.

Therefore, it is conceivable to perform soldering in a state where the right-angle connector 5 and the printed circuit board K are fixed by using a double-sided tape or an adhesive. Is complicated. It is also conceivable that a member (for example, a fixing plate or the like) located on the rear side of the right angle type connector 5 is formed not by a plate material but lightly by a casting and by a center of gravity in the front-rear direction substantially at the center. However, if a heavy member is used, there arises a problem that the weight of the right angle type connector 5 itself increases.

When the right-angle connector 5 is mounted on the printed circuit board K, a pickup cover for sucking and transporting the right-angle connector 5 may be provided. Therefore, as shown by a chain line in FIG. 5, it is conceivable to arrange the pickup cover 7 detachably at the rear of the right angle type connector 5 and adjust the position of the center of gravity by the weight of the pickup cover 7. However, in such a configuration, the upper portion of the lead portion 62 is covered by the pickup cover 7. Therefore, when soldering is performed using a pulse heater (not shown), the pulse heater is brought into contact with the lead portion 62. This makes it difficult to do so.

[0008] The present invention has been made in view of such a problem, and without increasing the weight of the connector.
An object of the present invention is to provide an electrical connector that can be stably mounted on a substrate and that can be easily fixed to the substrate.

[0009]

SUMMARY OF THE INVENTION In order to achieve the above object, an electric connector according to the present invention comprises a housing, a plurality of contacts aligned and held in the housing in the left-right direction, and a mountable housing. It consists of a balance weight. The housing has a fitting portion that can be fitted with a mating connector and a placement bottom surface that can be placed on the board, and is formed to extend in the left-right direction. Then, the mounting bottom is brought into contact with the surface of the substrate and mounted on the substrate, and then fixed to the substrate. Further, the balance weight is configured to be attachable to the housing on the side opposite to the center of gravity of the entire housing in the front-rear direction with respect to the center position of the mounting bottom surface in the front-rear direction.

In the electrical connector thus configured, the housing is formed to extend in the left-right direction, so that the housing does not fall down in the left-right direction only by being placed on the board. Also,
Since the center of gravity of the entire housing in the front-rear direction is shifted from the center of the mounting bottom in the front-rear direction, it is easy for the housing to fall on the side where the center of gravity is located, but a balance weight must be installed on the opposite side of this center of gravity. Accordingly, the center of gravity of the entire electrical connector in the front-rear direction can be made closer to the center position of the mounting bottom surface in the front-rear direction, so that the electrical connector simply mounted on the board can be prevented from falling down.

In the electric connector according to the present invention, a housing is formed so that a fitting portion protrudes forward, and the housing extends up and down and opens at least upward at left and right outer rear sides of the fitting portion. It is preferable to form a balance weight holding hole. In addition, each of the contacts has a contact portion on one end side, which has a contact portion located in the fitting portion and in contact with a mating contact provided on the mating connector when mating with the mating connector, and It is preferable to configure a right angle type connector as a configuration having a lead portion which extends to the lower surface side of the housing and is surface-mounted on a wiring pattern formed on the surface of the substrate.

According to such a right angle type connector, even if the housing is apt to fall forward due to the influence of the fitting portion, the balance weight can be inserted and held in the balance weight holding hole, so that the entire connector is provided. Can be moved rearward, so that the connector can hardly fall down. Here, the balance weight is inserted and held on the left and right outer rear sides of the fitting portion where the contact is held, so that even when soldering the lead portion extending rearward of the housing, the balance weight may be an obstacle. Absent. Further, the balance weight can be attached from above the housing, so that it is easy to attach and can be removed even after the connector is fixed on the board.

It is preferable that the balance weight is used as an attachment means for fixing the housing to the substrate. With such a configuration, it is possible to mount the connector on the board in a stable state without increasing the combined weight after the connector is attached to the board.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A surface mount right angle type connector which is an example of a preferred embodiment of an electric connector according to the present invention will be described below with reference to FIGS. The right angle type connector 1 is a receptacle connector including a housing 10 and a plurality of contacts 30 aligned and held by the housing 10.

The housing 10 includes a housing main body 11 made of an insulating material and a metal shield cover (shell) 13 attached so as to cover the outer periphery of the housing main body 11. A guide housing 12 is formed at the center of the housing body 11 so as to protrude forward. The guide housing 12 has a plurality of contact holding holes (not shown) penetrating front and rear. The contacts 30 are aligned and held respectively. Outside the fixing portions 17, 17 which are left and right end portions of the housing body 11, a metal fixing plate 1 formed in a substantially L-shape extending downward is connected to the shell 13.
8 are provided.

The shell 13 is disposed so as to cover the outer periphery of the guide housing 12, and a part thereof is formed to extend over the upper and lower surfaces of the housing body 11. A plug receiving space 14 opened forward is formed inside the guide housing 12, and a contact 30 is disposed facing the plug receiving space 14.

Further, positioning projections 15 projecting downward are formed on the bottom surfaces 17a of the fixing portions 17, 17, respectively. The positioning projections 15 are inserted into positioning through holes (not shown) formed in the printed board K, and connect the right-angle connector 1 to the printed board K.
For mounting at a predetermined position. Further, a protrusion 16 for preventing deflection is formed on the bottom surface 11a of the housing main body 11 between the two positioning protrusions 15, and is provided in a through hole (not shown) for preventing deflection formed on the printed circuit board K. The insertion prevents the central portion of the housing body 11 from being bent when the connector is inserted into or removed from the mating connector.

In this right angle type connector 5, the bottom surface 17a of the fixing portions 17, 17 and the bottom surface 11a of the housing body 11 form the mounting bottom surface described in the claims. If the lower surface of the lead 32 projects below the bottom surfaces 11a, 17a, the bottom surface of the fixing plate 18 or the lower surface of the lead 32, or these surfaces and the bottom surfaces 11a, 17a.
The surface combined with a forms the mounting bottom surface.

The contact 30 is provided with contact portions 31 vertically opposed with a predetermined interval extending in the horizontal direction and extending downward from the rear of the contact portion 31 (the lower surface side of the housing). Further, the lead portion 32 extends rearward in the horizontal direction. The lead portion 32 is a lead portion 62 of the connector 5 shown in FIG.
The housing 10 is formed in the same manner as described above, and is arranged on the housing body 11 so that when the housing 10 is mounted on the printed board K, it comes into contact with a wiring pattern (not shown) formed on the surface of the printed board K. .

Balance weight holding holes 19, 19 extending downward from the upper surface 17b are formed in fixing portions 17, 17 formed at the left and right ends of the housing body 11. The balance weight holding hole 19 includes a rectangular hole 19a formed in a rectangular shape in plan view, and a round hole 19b formed at the center of the rectangular hole 19a and having a diameter larger than the short side of the rectangular hole 19a. Consists of The balance weight holding holes 19, 19 are formed at positions behind the center of gravity of the right-angle connector 1 in the front-rear direction.

A balance weight 20 is configured to be freely inserted into and removed from the balance weight holding hole 19. The balance weight 20 is formed of a metal material and includes a cylindrical main body 20a and a flange 20b formed at an upper portion of the main body 20a and having an outer diameter larger than the outer diameter of the main body 20a. The balance weight 20 thus formed is fitted to the round hole portion 19 of the balance weight holding hole 19.
b and held by the housing 10. The round hole portion 19b has an inner diameter that allows the main body portion 20a to be lightly press-fitted or that can be loosely fitted.

The balance weight 20 is inserted into and held in the balance weight holding hole 19 so that the position of the center of gravity of the entire right-angle connector 1 is adjusted to the bottom surface 11a.
And the bottom surface 17a is located substantially at the center in the front-rear direction. This prevents the right angle type connector 1 from falling down even in a state in which it is merely placed on the printed board K (a state in which both bottom surfaces 11a and 17a are in contact). In addition, according to the balance weight 20 formed in this way, by using materials having different specific gravities, or by changing the length of the main body portion 20a and the diameter and thickness of the flange portion 20b, the balance weight 20 is adapted to the right angle type connector 1. A heavy weight can be easily obtained.

The right angle type connector 1 formed as described above may use an automatic transfer device which performs handling by mounting on the printed board K by sucking the upper surface. When performing the handling by such suction, a flat plate portion capable of being sucked is formed on the upper surface of the right angle type connector 1, or a pickup cover having such a flat plate portion is attached.

For example, as shown by a chain line in FIG.
The pickup cover 2 which is formed so as to sandwich the shell 13 outside the guide housing 12 and has a flat upper surface 2a may be attached. With the pickup cover 2 configured as described above, there is no hindrance when soldering the lead portion 32, and the weight of the balance weight 20 increases the weight of the pickup cover 2 to increase the weight. The weight in front of the right angle type connector 1 can be offset so that the center of gravity can be located substantially at the center.

Incidentally, in order to enable handling by suction, a part of the upper surface of the housing body 11 or the shell 13 may be formed to extend forward or backward. Further, the balance weight 20 is connected to the balance weight holding hole 19.
, The upper surface 20c of the flange portion 20b may be sucked.

As described above, the right-angle connector 1 handled by the automatic transfer device is provided on the printed board K with the positioning projections 15 and the deflection preventing projections 16 inserted into the positioning through holes and the deflection preventing through holes. Is positioned on the printed board K. After that, the fixing plate 18 and the lead portion 32 are soldered to a fixing pattern (ground pattern) and a wiring pattern formed on the printed board K.

Here, right angle type connector 1
In, even before soldering, balance weight 2
Since it does not fall forward due to the action of 0, the right angle type connector 1 can be easily transported and soldered. And after soldering, balance weight 2
If the 0 is pulled out of the housing 10 and removed, the weight of the right-angle connector 1 can be reduced. Here, a ready-made rivet can be used as the balance weight 20, and the removed balance weight 20 can be reused, so that the production cost of the right angle type connector 1 can be reduced.

The electrical connector according to the present invention is not limited to the above-described configuration, but may use a ready-made screw 120 as a balance weight as shown in FIG. When the screw 120 is used as described above, the balance weight holding hole 119 of the fixing portion 117 is used as a through hole, and the upper plate 113a of the shell 113 is extended to the upper side of the through hole 119. A penetrable hole is formed. Then, a female screw or a through-hole is formed at a position corresponding to the through-hole 119 on the printed circuit board K to form a screwed portion. A ground pattern is formed in the screwed portion, and the screw (tapping screw when a through hole is formed in the printed circuit board K) 120 inserted from above is screwed to the printed circuit board K. Type connector 101
Can be easily fixed to the printed circuit board K and the shell 113 can be easily connected to the ground.

Further, when the balance weight holding hole is a through hole, the balance weight does not necessarily need to be formed by screws, and as shown in FIG.
As in the case of 0, the balance weight 220 may be formed in a nail shape and the lower end surface 220c may be in contact with a ground pattern formed on the printed circuit board K. With such a configuration, the lower end surface 220 c of the balance weight 220 is formed.
Can be soldered to the ground pattern,
This also makes it possible to easily fix the right-angle connector 201 to the printed circuit board K and connect the shell 223 to the ground.

Further, in the above embodiment, the case where the electric connector according to the present invention is a receptacle type right angle type connector has been described. However, the present invention is not limited to this, and the plug type light connector is not limited to this. An angle type connector may of course be used. Furthermore, the connector is not limited to the right angle type connector, and is unstable when mounted on the board because the center position of the housing mounting bottom surface in the front-rear direction and the center of gravity of the entire housing in the front-rear direction are displaced. Electrical connector.

[0031]

As described above, the electrical connector of the present invention is mounted on the board with the mounting bottom face of the housing in contact with the surface of the board. The balance weight can be attached to the opposite side of the center of gravity of the entire housing in the front-rear direction with respect to. This allows the center of gravity of the connector to be brought near the center of the mounting bottom surface in the front-rear direction, so that the connector can be mounted on the board in a stable state.

Therefore, the mounted connector does not fall down even if it is transported by the belt conveyor, so that the connector can be easily mounted on the substrate using an automatic mounting device or the like. Also, if the balance weight is removed from the housing after mounting on the board, an increase in the weight of the electrical connector itself can be suppressed.

The electrical connector according to the present invention is preferably a right-angle connector in which a housing having a fitting portion protruding forward is provided with a contact having a lead portion extending rearward. And it is preferable to form a balance weight holding hole extending vertically and opening at least upward at the left and right outer rear sides of the fitting portion in the housing, and to hold the balance weight in the balance weight holding hole, According to the right-angle connector configured as described above, the center of gravity of the entire connector can be easily moved to the vicinity of the center position of the mounting bottom surface even in a housing whose center of gravity is deviated due to the influence of the fitting portion. Can be. Further, since the balance weight is attached to the left and right outer rear sides of the fitting portion, it does not hinder the soldering of the lead portion.

Further, it is preferable that the balance weight is used as an attachment means for fixing the housing to the substrate. With such a configuration, the two components are attached after the connector is attached to the substrate. The substrate can be stably mounted on the substrate without increasing the weight.

[Brief description of the drawings]

FIG. 1 is a perspective view of an electric connector according to the present invention.

FIG. 2 is a sectional view taken along the line II-II in FIG. 1 in a state where the connector is fixed on a substrate.

FIG. 3 is a sectional view corresponding to a section taken along line II-II in FIG. 1 of another electrical connector according to the present invention.

FIG. 4 is a cross-sectional view corresponding to a II-II cross section in FIG. 1 of another electrical connector according to the present invention.

FIG. 5 is a cross-sectional view showing a state where a conventional electric connector is mounted on a substrate.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Right angle connector 10 Housing 19 Balance weight holding hole 20 Balance weight 30 Contact

Claims (3)

[Claims] 1. A mounting portion that can be fitted to a mating connector and a mounting bottom surface that can be mounted on a substrate, and are formed to extend in the left-right direction, and the mounting bottom surface is formed on the surface of the substrate. A housing fixed to the substrate after being mounted on the substrate by abutting on the substrate; a plurality of contacts aligned and held in the housing in the left-right direction; An electrical connector comprising a balance weight attachable to the housing on a side opposite to a position of a center of gravity of the entire housing in the front-rear direction with respect to the position. 2. The fitting portion of the housing is formed so as to protrude forward, and a balance weight holding hole extending up and down and opening at least upward is formed on the left and right outer rear sides of the fitting portion, The contact has a contact portion on one end side, which is located in the fitting portion and is in contact with a mating contact provided on the mating connector when mating with the mating connector, and the other end has the contact portion. The electrical connector according to claim 1, further comprising a lead portion extending to a lower surface side of the housing and surface-mounted on a wiring pattern formed on a surface of the substrate, thereby forming a right-angle connector. 3. The electrical connector according to claim 1, wherein the balance weight is used as attachment means for fixing the housing to the substrate.