JP3220661B2 - Mounting structure for card connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a card connector mounting structure having a connector disposed on a circuit board and a card receiving member connected to the connector on the circuit board.

[0002]

2. Description of the Related Art In this type of mounting structure, a guide portion for guiding both side edges of a card when a PC card or the like is inserted for connection with a connector is formed in a card accommodating member. The guide portion is generally formed in a groove shape on opposing inner surfaces of a pair of parallel arms, and the arms extend long. Since the card accommodating member has such a long arm, it is made separately from the connector when suction and conveyance by an automatic machine at the time of assembly and the convenience of soldering are considered, and the connector is screwed on the circuit board by a screw. Combined with

For example, as shown in FIG. 8 of the accompanying drawings, a connector 52 in which a contact 51 is implanted has a fixing hole 53 on both sides (a front side and a back side in the drawing) and a pin-like pin for positioning on a rear lower surface. And a projection 54. Such a connector 52
The screw 55 and the nut 5 are inserted into the positioning hole P1 of the circuit board P and fixed at a predetermined position.
6 secures the circuit board P at the predetermined position. On the other hand, similarly to the connector 52, the fixing holes 62 are formed on both sides of the card housing member 61. After the card receiving member 61 is disposed on the circuit board P in a state where the front end 63 is positioned on the step-like rear end 57 of the connector 52, the screw 64 and the nut 65
Is fixed to the circuit board P.

[0004] A card C such as a PC card is inserted into the groove-shaped guide 66 of the card accommodating member 61 fixed on the circuit board P, and the front end of the card C is connected to the connector 52.
The contact 51 and the connection circuit (not shown) of the card C are electrically connected at this position.

Thus, the connector 52 and the card housing member 61 are fixed in a direction perpendicular and parallel to the surface of the circuit board P. When inserting and removing a PC card, a large force acts on the card housing member in the card insertion / removal direction, that is, in a direction parallel to the surface of the circuit board, and also in a direction perpendicular to the surface. The screw 64 can sufficiently resist such a force.

[0006]

However, the structure shown in FIG. 8 has a problem that the number of screws is large, the number of parts is increased, and the work efficiency at the time of assembly is reduced. Screws have a strong holding force and are suitable for fixing. However, in order to solve the above-mentioned problem, there is a demand that the number of screws be as small as possible.

Further, in the connector shown in FIG. 8, a protrusion for positioning must be formed in addition to a screw for fixing, and the configuration is further complicated.

SUMMARY OF THE INVENTION An object of the present invention is to provide a card connector mounting structure which solves such a problem, has a simple structure, has a high assembling efficiency, and can secure sufficient strength.

[0009]

A mounting structure for a card connector according to the present invention includes a connector provided on a circuit board and a card accommodating member connected to the connector on the circuit board. I have. The card accommodating member is formed with parallel pairs of guides for guiding both side edges of the card, so that when the card is accommodated, the connection circuit of the card is connected to the contact of the connector.

In this structure, according to the present invention, the connector has a protruding portion extending downward from the bottom surface of the mounting portion in contact with the circuit board, and the protruding portion is inserted into the mounting hole of the circuit board. A hollow hole is formed in the mounting portion and the protruding portion so as to have a possible outer diameter and penetrate vertically. The hollow hole is formed with a large diameter part at the upper part and a small diameter part at the lower part.
On the other hand, the card accommodating member has a connecting portion disposed on the mounting portion of the connector, and the connecting portion has a pin portion extending downward from the bottom surface and inserted into the hollow hole of the connector. . The outer diameter of the pin portion and the inner diameter of the hollow hole portion are in such a relationship that the outer diameter of the pin portion is smaller than the inner diameter of the large diameter portion and larger than the inner diameter of the small diameter portion. Further, the card housing member has a fixing portion which is screwed to the circuit board.

In the structure of the present invention having the above-described structure, first, the connector is arranged at a predetermined position on the circuit board. That is, the protrusion of the connector is inserted into the corresponding hole of the circuit board to position the connector.

Next, the card housing member is arranged on the circuit board so as to be connected to the connector. That is, the pin portion extending from the connecting portion of the card housing member is inserted into the hollow hole of the connector. Since the outer diameter of the pin portion is smaller than the upper portion (large diameter portion) of the hollow hole portion, it easily enters the hollow hole portion and once abuts on the lower portion (small diameter portion), but further strongly presses the pin portion. Since the outer diameter of the pin portion is slightly larger than that of the small diameter portion, the pin portion enters while expanding the small diameter portion. The outer diameter surface of the enlarged projection is strongly engaged with the inner diameter surface of the hole of the circuit board. Thus, the positioned connector is held by the circuit board at the protrusion. At the same time, the card accommodating member is positioned with respect to the connector and the circuit board, and is connected to the connector. Thereafter, the card accommodating member is firmly held on the circuit board by screws at the fixing portion.

In a preferred embodiment of the present invention, if the protruding portion is divided into a plurality of cut portions opened at the front end portion extending in the axial direction, the diameter of the protruding portion at the front end portion can be easily expanded. Becomes

Furthermore, if the mounting portion has a peripheral groove formed on the lower surface of the mounting portion, and if the inner surface of the peripheral groove is continuous with the outer peripheral surface of the projecting portion, the projecting portion is attached to the mounting portion. It is possible to expand the diameter over a long range up to.

[0015]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 to FIG.
An embodiment of the present invention will be described based on the above. 1 to 5 show a first embodiment.

In FIG. 1, reference numeral 10 denotes a connector attached to the circuit board P, which
0 is connected on the circuit board P. The card storage member 20
Accommodates a card 30.

In the connector 10, a plurality of contacts 12 are implanted so as to penetrate the side surface of the web portion 11A of the housing 11 having a substantially H shape in plan view. The contact 12
In the case of the present embodiment, the connection portions 12A are planted in two rows, and the connecting portions 12A protruding forward (to the right in the drawing) are also provided in two rows, but are arranged rearward (to the left in the drawing) The protruding connection portions are lined up by being bent downward.

The housing 11 of the connector 10 has parallel arms 11B extending forward at both ends of the web portion 11A, and its front end (right end in FIG. 1) is bent downward in a crank shape. It is an attachment portion 11C. A guide groove 11D for slidingly guiding a card 30 such as a PC card is formed on the opposite side surface of the two arm portions 11B. As shown in FIG. 2, a protrusion 13 inserted into the hole P1 of the circuit board P extends downward from the lower surface of the mounting portion 11C. The mounting portion 11C and the protrusion 1
3, a hollow hole 14 penetrating vertically is formed as shown in FIG. 2, and the mounting portion 11C has an H-shape in plan view as shown in FIGS. The first groove 15 located on both sides of the hollow hole portion 14 and the second groove 16 which connects the two first grooves 15 and also passes through the hollow hole portion 14 are vertically penetrated in FIG. Is formed. Therefore, the protruding portion 13 is divided into two by the second groove 16 as a cut portion.

The upper portion of the hollow hole 14 has a large diameter portion 14A,
The lower portion is a small diameter portion 14C, and in the present embodiment, as a preferable case, the transition portion is a tapered portion 14B.
It has become. In the case of this embodiment, the large diameter portion 14A is within the range of the mounting portion 11C, and the tapered portion 14B and the small diameter portion 1
4C is located within the range of the protrusion 13. The inner diameter of each portion of the hollow hole portion 14 is smaller than the outer diameter of the pin portion provided in the connecting portion of the card accommodating member described later, and the outer diameter of the pin portion is smaller than the large diameter portion 14A and smaller than the small diameter portion 14C. Is also large.

As shown in FIG. 1, the card accommodating member 20 has two guide bars 22 each having a groove-shaped guide portion 21 for directly slidingly guiding both side edges of the card 30. The two guide bars 22 are connected to each other by a bottom plate 23 at their lower surfaces. At the front end of the guide bar 22, there is formed a connecting portion 24 which is cut out stepwise downward. The connecting part 2
4 is provided with a pin portion 25 extending downward. The pin portion 25 is connected to the connector 10 described above in the axial direction.
And the outer diameter is set to be smaller than the inner diameter of the large diameter portion 14A and larger than the inner diameter of the small diameter portion 14C of the hollow hole portion 14 as described above. Have been. Further, a recess 26 is formed at the rear end of the guide bar 22 so as to open upward, and a nut 27 is housed in the recess 26 to form a fixed portion. The screw 28 is screwed into the screw hole 27A of the nut 27 from below through a fixing hole P2 of the circuit board P and a through hole (not shown) of the guide bar 22.

The apparatus of this embodiment is assembled and used in the following manner.

First, in FIG. 1, the connector 10 is brought above a predetermined position of the circuit board P, and the protrusion 13 is inserted into the hole P.
Insert into 1. As a result, the connector 10 is brought to a predetermined position on the circuit board P, and the connection portion 12B of the contact 12 comes into contact with the corresponding connection circuit portion P3 of the circuit board P, and is soldered in this state. .

Next, as shown in FIG. 2, the circuit board P
When the protrusion 13 is inserted and positioned in the hole P1, the pin 25 of the card accommodating member 20 is
In the upper position. Thereafter, the pin 25 is inserted into the hollow hole 14 as shown in FIG. Since the outer diameter of the pin portion 25 is smaller than the large-diameter portion 14A of the hollow hole portion 14, the pin portion 25 easily enters the hollow hole portion 14 at first, but at the time of the advance, the pin portion 25 is moved into the tapered portion 14B. Contact. When the pin portion 25 is further pushed in, the pin portion 25 enters while enlarging the small-diameter portion 14C. That is, as shown in FIG. 5, the outer diameter of the protruding portion 13 is larger than the inner diameter of the hole P <b> 1 of the circuit board P, and the connector 10 is fixed.

Thereafter, the card accommodating member 20 is firmly fixed with the screw 28 and the nut 27.

The card 30 such as a PC card is inserted into the card accommodating member 20 while being guided by the guide portion 21, and when the front end surface reaches the connector 10, a connection hole formed in the front end surface is formed. The contact portion 12A of the contact 12 of the connector 10 enters the connector 31 and is connected to a circuit in the card.

Next, a second embodiment of the present invention will be described with reference to FIGS.

The present embodiment is characterized in that, as shown in FIG. 6, a peripheral groove 17 is formed near the upper surface of the mounting portion 11C of the connector 10. In the present embodiment, the circumferential groove 17
Is located on an extension of the outer peripheral surface of the protrusion 13 in the axial direction. That is, according to the present embodiment, when the pin portion 25 of the card accommodating member 20 is press-fitted into the small diameter portion 14C of the hollow hole portion 14, there is an advantage that the diameter can be easily expanded and deformed as shown in FIG.

The present invention is not limited to the illustrated embodiment but can be variously modified. For example, the protruding portion may be formed into a thick cylindrical shape that can be easily expanded without being divided, and the length of the protruding portion may be set so as to fit into the circuit board without protruding downward from the circuit board. May be strongly pressed against the inner surface of the positioning hole when the diameter is increased.

[0029]

As described above, according to the present invention, only the pins provided at the connecting portion of the card accommodating member are inserted into the hollow holes of the connector positioned on the circuit board. The card accommodating member is fixed and positioned. In the present invention, the protrusion of the connector has both functions of positioning and fixing, so that not only the shape of the connector is simplified, but also the mounting of the connector and the card receiving member becomes extremely simple. ,
Moreover, the card accommodating member that receives the most force is firmly fixed with screws, and its strength is sufficiently ensured.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an assembly according to a first embodiment of the present invention in which members are separated.

FIG. 2 is a cross-sectional view showing a main part of the connector and the card accommodating member of FIG. 1 before coupling.

FIG. 3 is a plan view of a mounting portion of the connector of FIG. 2;

FIG. 4 is a sectional view taken along the line IV-IV in FIG. 2;

FIG. 5 is a cross-sectional view showing the state of FIG. 2 after coupling.

FIG. 6 is a cross-sectional view of a second embodiment of the present invention before coupling.

FIG. 7 is a cross-sectional view showing the state of FIG. 6 after coupling.

FIG. 8 is a partial sectional view showing a conventional assembly.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Connector 11C Attachment part 13 Projection part 14 Hollow hole part 14A Large diameter part 14B Taper part 14C Small diameter part 16 Notch part (2nd groove) 17 Peripheral groove 20 Card accommodating member 21 Guide part 24 Connection part 25 Pin part 26 Fixing part ( (Recess) 27 fixing part (nut) 30 card P circuit board P1 hole

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H01R 24/00 H01R 12/18

Claims (3)

(57) [Claims] 1. A connector provided on a circuit board, and a card accommodating member connected to the connector on the circuit board, forming a parallel pair for guiding both side edges of the card to the card accommodating member. In a mounting structure for a card connector in which a guide portion is formed and a connection circuit portion of the card is connected to a contact of the connector when the card is accommodated, the connector extends downward from a bottom surface of the mounting portion in contact with the circuit board. The protrusion has an outer diameter that can be inserted into the mounting hole of the circuit board, and the mounting portion and the protrusion have a hollow hole that penetrates vertically. The hollow hole has an upper portion formed with a large-diameter portion and a lower portion formed with a small-diameter portion, and the card accommodating member has a connecting portion provided on a mounting portion of the connector, and the connecting portion extends downward from the bottom surface. The pin inserted into the hollow hole of the connector Provided, the outer diameter of the pin portion and the inner diameter of the hollow hole portion are such that the outer diameter of the pin portion is smaller than the inner diameter of the large diameter portion and larger than the inner diameter of the small diameter portion. A card connector mounting structure having a fixing portion screwed to a circuit board. 2. The card connector mounting structure according to claim 1, wherein the projecting portion is divided into a plurality of cut portions extending in the axial direction and opening to the front end portion. 3. The mounting part according to claim 1, wherein a peripheral groove is formed on the lower surface of the mounting part, and an inner surface of the peripheral groove is continuous with an outer peripheral surface of the protruding part. Card connector mounting structure.