TW202030938A - Connector for substrate preventing the substrate from being removed from the insertion portion - Google Patents

Abstract

This invention provides a connector for substrate 1 having a connector body 1p and a detachment prevention mechanism 7. In the state where the end portion 3p of the substrate 3 is inserted into the insertion portion 1s of the connector body, the detachment prevention mechanism fits into the fitting portion 3e of the substrate, thereby preventing the substrate from being removed from the insertion portion.

Description

Connector for board

This application is based on Japanese Patent Application No. 2019-015610 (application date: January 31, 2019), and priority is granted based on the basic application. This application includes all the contents of the basic application by referring to the basic application.

The embodiment of the present invention relates to a connector for a board.

Previously, there have been known, for example, a connector for a board that is provided on the motherboard and can be inserted into the end of the expansion board. The board connector has: a connector body with an insertion part; a pair of holding arms extending parallel to each other from both sides of the connector body; and a convex part provided at the extension end (end) of each holding arm. On the other hand, there are recesses on both sides of the expansion board for engaging with the protrusions of the holding arms.

Here, insert the end of the expansion board into the insertion portion of the connector body. In this way, the convex part is engaged with the concave part. At this time, the engagement state of the convex portion and the concave portion is maintained by the elastic force of the holding arm itself. In this way, the expansion board is held by a pair of holding arms sandwiching its two sides, whereby the expansion board is electrically connected to the connector for the board. [Prior Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open No. 2010-225466 [Patent Document 2] Japanese Patent No. 5429308 [Patent Document 3] Japanese Patent No. 3730116

[The problem to be solved by the invention]

However, in the above-mentioned conventional board connector, both sides of the flat plate-shaped extension board are clamped by a pair of holding arms. In this state, due to, for example, the magnitude of external pressure or external vibration acting on the board connector or expansion board, the engagement state of the convex portion and the concave portion is released. As a result, there is an expansion board from the board connector The fear of breaking away or even falling off.

The object of the present invention is to provide a connector for a board that prevents the extension board on both sides clamped by a pair of holding arms from detaching (falling off). [Technical means to solve the problem]

According to the embodiment, the board connector has a connector body and a fall prevention mechanism. The anti-drop mechanism is fitted into the fitting part of the substrate in a state where the end of the substrate is inserted into the insertion part of the connector body to prevent the substrate from being detached from the insertion part.

"The composition of an implementation form" Fig. 1 is a layout configuration diagram of a board connector 1 (hereinafter referred to as a connector) according to an embodiment. In FIG. 1, as an example, the connector 1 is provided on the motherboard 2 (electronic circuit board). The motherboard 2 is built in a desktop computer, a notebook computer, or a tablet terminal. For example, it can be configured with electronic components such as a power supply, a CPU (Central Processing Unit), and a memory. The connector 1 may be configured to electrically connect the motherboard 2 and another board 3 (hereinafter referred to as an extension board).

In addition, the expansion board 3 has a flat rectangular shape and has a front surface 3a and a back surface 3b. The expansion base 3 has an end 3p that can be inserted into the connector 1 and side surfaces 3s, which are provided on both sides of the expansion base 3 with the end 3p sandwiched therebetween. The two side surfaces 3s of the expansion board 3 are provided with recesses 4 for engaging with the protrusions 6 described later. The recessed portion 4 is configured by recessing a part of the side surface 3s in a rectangular shape, for example.

As shown in FIG. 1, the connector 1 has a connector body 1p, a holding arm 5, and a convex part 6. The connector body 1p is electrically connected to the motherboard 2 and has an insertion portion 1s into which the end 3p of the expansion board 3 can be inserted. The holding arms 5 extend parallel to each other from both sides of the connector body 1p. The convex portion 6 is provided at the extension end of each holding arm 5, and is engaged with the concave portion 4 when the end 3p of the expansion board 3 is inserted into the insertion portion 1s of the connector body 1p. In the example of FIG. 1, a pair of holding arms 5 extend parallel to the mother board 2. In this case, the extension board 3 is inserted obliquely with respect to the connector body 1p (insertion portion 1s).

FIG. 2 is a diagram of the holding state of the expansion base 3. In FIG. 2, as an example, the expansion board 3 has a positional relationship parallel to the mother board 2 and is held by the connector 1. Here, according to the holding process of the expansion board 3, first, the expansion board 3 is tilted with respect to the motherboard 2 and the end 3p of the expansion board 3 is inserted into the connector body 1p (insertion portion 1s) (refer to FIG. 1).

Next, the expansion board 3 is displaced parallel to the motherboard 2. At the same time, the pair of holding arms 5 are elastically deformed, so that the extension ends (protrusions 6) of the holding arms 5 are separated from each other. Next, when the expansion board 3 and the motherboard 2 are in a parallel positional relationship, the elastic deformation of the holding arm 5 is released.

In this way, as shown in FIG. 2, the holding arm 5 is elastically deformed into the initial shape by its own restoring force. At this time, the convex portion 6 of the holding arm 5 engages with the concave portion 4 of the extension board 3. In the example of FIG. 2, the engagement state of the convex portion 6 and the concave portion 4 is such that a part of the convex portion 6 (for example, the end portion 6p) of the convex portion 6 that is engaged with the concave portion 4 is pressed against the front surface 3a of the expansion board 3.

In this state, the expansion board 3 is held by a pair of holding arms 5 sandwiching its two sides. Thereby, the displacement action of the expansion board 3 in the direction (refer to FIG. 1) in which it stands up (inclined) from the motherboard 2 is suppressed. As a result, the expansion board 3 has a positional relationship parallel to the mother board 2 and is held by the connector 1.

However, regarding the above-mentioned engagement state of the convex portion 6 and the concave portion 4, there is a possibility that the engagement state may be released due to the magnitude of external pressure or external vibration acting on the connector 1 or the expansion board 3. For example, it is assumed that the expansion board 3 is detached from the connector or falls off in a direction parallel to the motherboard 2. Therefore, the connector 1 is provided with a detachment prevention mechanism 7 (refer to FIG. 3) that prevents the expansion substrate 3 on both sides clamped by the pair of holding arms 5 from detaching (falling off).

FIG. 3 is a structural diagram of the anti-dropping mechanism 7. The anti-dropping mechanism 7 uses a fitting portion 3e provided in the expansion board 3 in advance (refer to FIGS. 1, 2, and 4). The fitting part 3e is formed from the front surface 3a of the expansion board 3 and the back surface 3b. In FIGS. 1, 2, and 4, as an example, the fitting portion is configured as a through hole 3 e that penetrates the back surface 3 b from the front surface 3 a of the expansion board 3. In addition, the shape or size of the fitting portion (through hole) 3e is set according to, for example, the type or size of the expansion board 3, so it is not particularly limited here. As the shape of the fitting portion (through hole) 3e, for example, various shapes such as a circle, a triangle, and a rectangle are assumed.

As shown in FIG. 3, the anti-dropping mechanism 7 has the anti-dropping body 7p and the insertion structure 8. As the material of the detachment prevention body 7p, for example, any one of a metal material and a resin material can be applied. The anti-dropping body 7p and the insertion structure 8 may be integrally formed with each other, or the insertion structure 8 may be added to the anti-dropping body 7p after being separately formed.

The anti-dropping body 7p is a cantilever beam with elasticity. The base end of the anti-dropping body 7p is supported by the connector 1, and the end is a free end. In the example of FIG. 3, the anti-dropping body 7p is arranged between the pair of holding arms 5. In this case, the base end of the anti-dropping body 7p is supported by the facing surface 5s of the holding arm 5, and extends from the base end and the end in parallel with the holding arm 5 (the facing surface 5s). The facing surface 5s means the inner surface 5s of a pair of holding arms 5 extending in parallel in a positional relationship facing each other.

The embedded structure 8 is provided at the end (free end) of the anti-dropping body 7p. The embedding structure 8 has a contour that can be inserted into the fitting portion (through hole) 3e of the expansion board 3. The embedded structure 8 faces the direction away from the mother board 2 (refer to FIG. 1), and the end (free end) of the self-detachment prevention body 7p is continuously erected. Here, if the shape of the fitting portion (through hole) 3e is circular, the fitting structure 8 has a contour (e.g., cylindrical or cylindrical shape) that can be fitted into the circular fitting portion (through hole) 3e. In this case, the diameter of the cylindrical (cylindrical) insertion structure 8 is preferably set to be the same as or slightly smaller than the inner diameter of the circular fitting portion (through hole) 3e.

Fig. 4 is a schematic diagram showing the engagement process of the anti-dropping mechanism 7 (the anti-dropping body 7p, the insertion structure 8) and the fitting portion (through hole) 3e. As shown in FIG. 4, the expansion board 3 is inclined with respect to the motherboard 2 (refer to FIG. 1), and the end 3p of the expansion board 3 is inserted into the connector body 1p (insertion portion 1s). At the time of this insertion, the fitting structure 8 can be fitted into the fitting portion (through hole) 3e and positioned.

Then, the expansion board 3 is displaced in a manner parallel to the motherboard 2, and the convex portion 6 of the holding arm 5 is engaged with the concave portion 4 of the expansion board 3. At this time, both sides of the expansion board 3 are clamped by a pair of holding arms 5. At the same time, the fitting structure 8 is fitted into the fitting portion (through hole) 3e (refer to FIG. 5).

FIG. 5 is a schematic diagram showing a state in which the insertion structure 8 of the anti-dropping mechanism 7 and the fitting portion (through hole) 3e of the expansion board 3 are fitted. As shown in Fig. 5, in the fitted state, the cylindrical (cylindrical)-shaped fitting structure 8 is in contact with the circular fitting portion (through hole) 3e without a gap. This prevents the expansion board 3 from detaching from the connector body 1p (insertion portion 1s). As a result, the connection state between the end portion 3p of the expansion board 3 and the metal terminal 9 of the connector body 1p (insertion portion 1s) is maintained fixed. In addition, in the example of FIG. 5, the end 3p of the expansion board 3 inserted into the connector body 1p (insertion portion 1s) is always directed toward the metal by the biasing spring 10 built into the connector body 1p (insertion portion 1s) The terminal 9 is pressed.

"The effect of the implementation form" As described above, according to the present embodiment, by providing the anti-dropping mechanism 7, it is possible to prevent the expansion substrate 3 on both sides clamped by the holding arm 5 from falling off (falling off). In this case, even if external force or external vibration acts on the connector 1 or the expansion board 3, the engaged state of the convex portion 6p of the holding arm 5 and the concave portion 4 of the expansion board 3 is maintained fixed. Thereby, the connection state between the end portion 3p of the expansion board 3 and the metal terminal 9 of the connector body 1p (insertion portion 1s) is maintained fixed. As a result, the electrical connection state of the connector 1 and the expansion board 3 can be maintained and fixed for a long time.

According to the present embodiment, if the upper profile of the fitting structure 8 is formed in an arc shape (see FIG. 5), the arc-shaped curved surface can be used as the guide portion 8g. Thereby, when fitting into the fitting portion (through hole) 3e of the extension board 3, the arc-shaped guide portion 8g can smoothly guide the fitting structure 8 toward the fitting portion (through hole) 3e.

According to this embodiment, by providing the anti-dropping mechanism 7, the clearance and margin between the end 3p of the expansion board 3 and the connector body 1p (insertion portion 1s) can be eliminated. In this case, when external pressure or external vibration acts on the connector 1 or the expansion board 3, the end 3p of the expansion board 3 will not rub against the metal terminal 9 of the connector body 1p (insertion portion 1s). Thereby, it is possible to reduce or suppress the abrasion of the end 3p of the expansion board 3 and the metal terminal 9 of the connector body 1p (insertion portion 1s).

"The first modification" Fig. 6 is a cross-sectional view of the insertion structure 8 of the first modification. As shown in FIG. 6, the embedding structure 8 of this modification has a contour that can be inserted into the fitting portion (through hole) 3e of the expansion board 3. The insertion structure 8 faces the direction away from the mother board 2 (refer to FIG. 1), and the end (free end) of the self-detachment prevention body 7p is continuously erected in a curved shape. The embedded structure 8 has a pressing portion 8f and a guide portion 8g.

In the example of FIG. 6, the pressing portion 8f has a contour formed continuously from the end (free end) of the anti-dropping body 7p, and protrudes in a curved shape beyond the end (free end). The guide portion 8g has a contour formed continuously from the pressing portion 8f and curved toward the base end of the detachment preventing body 7p. In addition, the guide part 8g has the same function as the guide part 8g of the said embodiment.

As described above, according to the first modified example, in the state where the insertion structure 8 of the anti-dropping mechanism 7 is fitted with the fitting portion (through hole) 3e of the expansion board 3, the pressing portion 8f faces the connector 1 (connector body 1p). The insertion part 1s presses the expansion board 3. This prevents the expansion board 3 from detaching from the connector body 1p (insertion portion 1s). As a result, the connection state between the end portion 3p of the expansion board 3 and the metal terminal 9 of the connector body 1p (insertion portion 1s) is maintained fixed. In addition, since other structures and effects are the same as those of the above-mentioned embodiment, their description is omitted.

"The second modification" Fig. 7 is a cross-sectional view of the insertion structure 8 of the second modification. As shown in FIG. 7, the embedding structure 8 of this modified example has an outline of a fitting portion (through hole) 3e that can be inserted into the expansion board 3. The insertion structure 8 faces the direction away from the mother board 2 (refer to FIG. 1), and the end (free end) of the self-detachment prevention body 7p is continuously erected in a curved shape. The embedded structure 8 has a pressing portion 8f and a guide portion 8g.

In the example of FIG. 7, the pressing portion 8f has a contour formed continuously from the end (free end) of the anti-dropping body 7p and protruding in a curved shape beyond the end (free end). The guide portion 8g has a contour that is continuously formed from the pressing portion 8f and is curved toward the base end of the detachment prevention body 7p and then curved toward the end (free end) of the detachment prevention body 7p in an arc shape. In addition, the guide part 8g has the same function as the guide part 8g of the said embodiment.

As described above, according to the second modified example, in a state where the insertion structure 8 of the anti-dropping mechanism 7 is fitted with the fitting portion (through hole) 3e of the expansion board 3, the pressing portion 8f faces the connector 1 (connector body 1p). The insertion part 1s presses the expansion board 3. This prevents the expansion board 3 from detaching from the connector body 1p (insertion portion 1s). As a result, the connection state between the end portion 3p of the expansion board 3 and the metal terminal 9 of the connector body 1p (insertion portion 1s) is maintained fixed. In addition, since other structures and effects are the same as those of the above-mentioned embodiment, their description is omitted.

"The third modification" Fig. 8 is a cross-sectional view of the embedded structure 8 of the third modification. As shown in FIG. 8, the embedding structure 8 of this modification has an outline of the embedding portion (through hole) 3 e of the expansion board 3. The insertion structure 8 faces the direction away from the mother board 2 (refer to FIG. 1), and the end (free end) of the self-detachment prevention body 7p is continuously erected in a curved shape. The embedded structure 8 has a pressing portion 8f and a guide portion 8g.

In the example of FIG. 8, the pressing portion 8f has a contour formed continuously from the end (free end) of the anti-dropping body 7p and protruding in a curved shape. The guide portion 8g has an arc-shaped contour formed between the pressing portion 8f and the end (free end) of the detachment prevention body 7p. In addition, the guide part 8g has the same function as the guide part 8g of the said embodiment.

As described above, according to the third modified example, in the state where the insertion structure 8 of the anti-dropping mechanism 7 is fitted with the fitting portion (through hole) 3e of the expansion board 3, the pressing portion 8f faces the connector 1 (connector body 1p). The insertion part 1s presses the expansion board 3. This prevents the expansion board 3 from detaching from the connector body 1p (insertion portion 1s). As a result, the connection state between the end portion 3p of the expansion board 3 and the metal terminal 9 of the connector body 1p (insertion portion 1s) is maintained fixed. In addition, since other structures and effects are the same as those of the above-mentioned embodiment, their description is omitted.

"Fourth variation" Fig. 9 is a cross-sectional view of the embedded structure 8 of the fourth modification. As shown in FIG. 9, the embedding structure 8 of this modification has an outline of the embedding portion (through hole) 3e of the expansion board 3. The insertion structure 8 faces the direction away from the mother board 2 (refer to FIG. 1), and the end (free end) of the self-detachment prevention body 7p is continuously erected in a curved shape. The fitting structure 8 has a first engaging portion 8a, a second engaging portion 8b, a pressing portion 8f, and a guide portion 8g.

In the example shown in FIG. 9, the first engaging portion 8a has a contour that is continuously formed at the end (free end) of the self-preventing body 7p and can be engaged with the back surface 3b of the expansion board 3. The second engaging portion 8b has an outline that is continuously configured from the first engaging portion 8a and can be engaged with the front surface 3a of the expansion board 3. The first engaging portion 8a also serves as the aforementioned pressing portion 8f. The guide portion 8g has an arc-shaped contour formed between the first engaging portion 8a and the second engaging portion 8b. In addition, the guide part 8g has the same function as the guide part 8g of the said embodiment.

As described above, according to the fourth modification, in the state where the insertion structure 8 of the anti-dropping mechanism 7 is fitted with the fitting portion (through hole) 3e of the expansion board 3, the first engaging portion 8a and the second engaging portion 8b are simultaneously It is clamped on the back 3b and the front 3a of the expansion board 3. Thereby, the expansion board 3 is clamped by both the front and the back. As a result, the posture of the expansion board 3 is maintained constant.

At this time, the first engagement portion 8a (pressing portion 8f) presses the expansion board 3 toward the insertion portion 1s of the connector 1 (connector body 1p). This prevents the expansion board 3 from detaching from the connector body 1p (insertion portion 1s). As a result, the connection state between the end portion 3p of the expansion board 3 and the metal terminal 9 of the connector body 1p (insertion portion 1s) is maintained fixed. In addition, since other structures and effects are the same as those of the above-mentioned embodiment, their description is omitted.

1: Connector for board 1p: Connector body 1s: Insert part 2: Motherboard 3: Expansion board 3a: front 3b: back 3e: Fitting part (through hole) 3p: end 3s: side 4: recess 5: Keep the arm 5s: Opposite surface 6: Convex 6p: terminal part 7: Anti-off mechanism 7p: Anti-dropping body 8: Embedded structure 8a: The first engaging part 8b: The second engaging part 8f: pressing part 8g: Guidance 9: Metal terminal 10: Energizing spring

Fig. 1 is a perspective view of a state in which a connector for a board of an embodiment is inserted into the expansion board, viewed from the front side of the expansion board. Fig. 2 is a plan view of a state in which the expansion board is held by the board connector viewed from the front side of the expansion board. Fig. 3 is a plan view showing the structure of a connector for a substrate with an anti-drop mechanism. Fig. 4 is a perspective view of the state in which the connector for the board is inserted into the expansion board, viewed from the back side of the expansion board. Fig. 5 is a cross-sectional view showing the structure of the anti-dropping mechanism of an embodiment. Fig. 6 is a cross-sectional view showing the structure of the anti-falling mechanism of the first modification. Fig. 7 is a cross-sectional view showing the structure of the anti-dropping mechanism of the second modification. Fig. 8 is a cross-sectional view showing the structure of the anti-dropping mechanism of the third modification. Fig. 9 is a cross-sectional view showing the structure of the anti-dropping mechanism of the fourth modification.

1p: Connector body

1s: Insert part

3: Expansion board

3a: front

3b: back

3e: Fitting part

3p: end

7: Anti-off mechanism

7p: Anti-dropping body

8: Embedded structure

8g: Guidance

9: Metal terminal

10: Energizing spring

Claims (10)

A connector for a substrate, which is used to electrically connect the substrate, and The above-mentioned substrate is provided with a mating part formed from the front surface and the back surface in advance; The above-mentioned board connector has: The connector body has an insertion part that can be inserted into the end of the above-mentioned substrate; and A detachment prevention mechanism is fitted to the fitting portion in a state where the end portion of the substrate is inserted into the insertion portion of the connector body, and prevents the substrate from being separated from the insertion portion. The connector for a board according to claim 1, wherein the fitting portion is formed from the front surface of the board through the back surface; and The anti-dropping mechanism is configured to be able to fit into the fitting portion when the end portion of the substrate is inserted into the insertion portion of the connector body. Such as the connector for the substrate of claim 1, wherein the above-mentioned anti-drop mechanism has: A cantilever-shaped anti-dropping body, which has elasticity, the base end is supported by the above-mentioned substrate connector, and the end is a free end; and An embedding structure, which is provided at the end of the anti-dropping body and can be embedded in the embedding portion of the substrate; The insertion structure is in contact with the fitting portion in a state of being fitted into the fitting portion of the substrate, and prevents the substrate from being separated from the insertion portion. The connector for a board according to claim 3, wherein the insertion structure has a pressing portion that presses the board toward the insertion portion in a state of being fitted to the fitting portion of the board. Such as the connector for the substrate of claim 3, wherein the above-mentioned embedded structure has: The first engaging portion is engaged with the back surface of the substrate; and The second engaging portion is engaged with the front surface of the substrate; and In a state where the insert structure is fitted to the fitting portion of the substrate, the first engaging portion and the second engaging portion are simultaneously engaged with the back surface and the front surface, and the substrate is clamped from the front back surface, The posture of the substrate is maintained fixed. The connector for a board according to claim 3, wherein the inserting structure has a guide portion that guides the inserting structure toward the fitting portion when the inserting structure is inserted into the fitting portion of the board. The connector for a substrate according to claim 1, wherein a recess formed by recessing a part of a side surface is provided on the substrate in advance; and The above-mentioned board connector has: A holding arm extending from the connector body; and The convex portion is provided at the extension end of the holding arm and is engaged with the concave portion when the end portion of the substrate is inserted into the insertion portion of the connector body. The connector for a substrate of claim 7, wherein the recesses are provided on both sides of the substrate; and The holding arms extend parallel to each other from both sides of the connector body. The connector for a board according to claim 6, wherein the guide portion has an arc-shaped outline. The connector for a board according to claim 4, wherein the guide portion is configured continuously from the pressing portion.

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