KR20190095209A - Poke-in Connector - Google Patents

Abstract

The present invention relates to a poke-in connector with a single plate structure without an additional molding unit by being stably mounted on a substrate. As a plate-shaped plate is bent in a cylinder shape, a wire connection space is formed therein and a wire insertion hole is provided at the front. The poke-in connector comprises: a mounting plate mounted on a substrate; a first support plate in which an end of the mounting plate is bent to the upper side; a pick-up plate bent to face the mounting plate on the end of the first support plate; a second support plate which is bent to face the first support plate at an end of the pick-up plate and of which an end is mounted on the substrate; and a connection plate bent from the rear end of the first support plate and the second support plate to the wire connection space and connecting a wire inserted into the wire connection space.

Description

Fork-in Connector

The present invention relates to a fork-in connector, and more particularly, to a fork-in connector having a single plate structure, which can be stably mounted on a substrate and is not provided with a separate molding part.

In general, a fork-in connector is a type in which a wire contacts and clamps a terminal only by inserting a wire into a terminal.

A conventional fork connector is coupled to a molded part surrounding a contact terminal mounted on a board, and a wire insertion hole of the contact terminal and the molding part is disposed in the same direction, and a wire is inserted into the contact terminal in a horizontal direction through the wire insertion hole. It forms a structure that is connected. The molding part guides the insertion of the wire to prevent unnecessary interference between the wire and the contact terminal, and maintains the mounting of the contact terminal in a stable manner, thereby improving reliability of electrical contact.

On the other hand, in recent years, as electric devices are gradually miniaturized, the size of the board on which the connector is mounted is also gradually reduced. However, as in the conventional connector having a molded part coupled to a contact terminal, the molded part occupies a relatively large area and space on the substrate, which is an obstacle to miniaturization of the substrate and the electric device. In order to solve this problem, US Patent No. 8,721,376B1 introduces a single plate structure fork-in connector made of only contact terminals under the name of 'SINGLE ELEMENT WIRE TO BOARD CONNECTOR'.

1 is a perspective view showing a connector according to the prior art, the connector is a fork of the prior document, Figure 2 is a cross-sectional view of the I-I direction showing a wire insertion structure for the connector of FIG.

Referring to FIG. 1, the connector 10 of the prior document is composed of a single plate, and a mounting plate 11 soldered to the substrate 20, and a wire inserting hole 12 in front of the mounting plate 11. A pair of support plates 13 are bent upward from both sides of the, and one side of the support plate 13 is composed of a pick-up plate 15 bent while shielding the upper portion of the wire insertion hole (12). Here, the mounting plate 11 is provided with a barrier wall 16 for preventing the insertion of the wire 30 by bending the upper end of the opposite end of the wire insertion hole 11 and a pair of support plates 13 facing each other. Respectively provide clamping portions 14 whose insertion direction ends are bent inwardly.

Since the connector of the prior document has a single plate structure from which the molding part is removed, it can be easily mounted on a small size substrate, which is advantageous in miniaturization of an electric device.

However, in the conventional connector, the pair of support plates 13 are connected by a mounting plate 11 at the lower side, but are physically separated between the pickup plate 15 and the other support plate 13 at the upper side. . Therefore, when the wire 30 is repeatedly connected and extracted between the pair of clamping portions 14, the pair of support plates 13 and the pair of clamping portions 14 easily exhibit plastic deformation, thereby making contact reliability. And there is a disadvantage that the durability is lowered.

In addition, the conventional connector 10 provides the wire insertion hole 12 on the same surface in the vertical direction in which the mounting plate 11, the pair of support plates 13 and the front end of the pickup plate 15 are vertical. In the connector, which is generally a fork in the horizontal connection direction, the wire 30 is inserted into the connector 10 in a slightly inclined direction. Therefore, in the conventional connector 10, as shown in FIG. 2, the coating 31 surrounding the wire 30 during the wire insertion process collides or interferes with the end of the upper pickup plate 15, making it difficult to connect. have. In order to prevent collision or interference between the connector 10 and the wire sheath 31, the wire 30 should be inserted only at a horizontal inclination angle θ1 of approximately 8 ° or less.

United States Patent US8,721,376B1

The present invention has been proposed to solve the above problems, and an object of the present invention is to provide a fork-in connector having a single plate structure, which is advantageous in miniaturization of an electrical device by improving the reliability of the connection by removing the molding part of the connector. .

The fork-in connector of the present invention for achieving the above object, the plate-shaped plate is bent in a cylindrical shape to form a wire connection space therein and provides a wire insertion hole in the front, the mounting plate mounted on the substrate; A first support plate on which an end of the mounting plate is bent upward; A pickup plate bent to face the mounting plate at an end of the first support plate; A second support plate bent at the end of the pickup plate so as to face the first support plate and having an end mounted on the substrate; And a connection plate bent from the rear ends of the first and second support plates to the wire insertion space to connect the wires inserted into the wire connection space.

In addition, the second supporting plate may be formed with a mounting terminal whose end is bent toward the mounting plate, and the mounting terminal is mounted on a substrate.

In addition, the wire insertion port is characterized in that the end of the pick-up plate has an evacuation groove which is retracted backward compared to the end of the mounting plate.

The connecting plate has a two-stage bending structure including an elastic portion bent at the rear end of the first support plate and the second support plate and a clamping portion bent at the end of the elastic portion, wherein the elastic portion and the clamping portion It is characterized in that the connection via the connection.

In addition, the fork-in connector of the present invention is further characterized in that it further comprises a blocking plate for preventing the over-insertion of the wire by the rear end of the mounting plate is bent upwards.

The fork-in connector of the present invention may be advantageously applied to a substrate or an electric apparatus that is miniaturized by mounting a plate-shaped plate of a single structure in a tubular shape and having both ends mounted on the substrate to improve bonding force with the substrate.

1 is a perspective view showing a connector according to the prior art.
2 is a cross-sectional view showing a wire insertion structure for the connector of FIG.
3 is a perspective view showing an example in which a connector according to an embodiment of the present invention is mounted on a board.
4 is a perspective view showing a connector according to an embodiment of the present invention.
5 is a plan view illustrating the connector of FIG. 4.
FIG. 6 is a perspective view of the connector of FIG. 4 viewed from the wire insertion hole direction. FIG.
7 is a front view showing a wire insertion structure for the connector of the present invention.
8 is a front view showing a wire bending structure for the connector of the present invention.
Figure 9 is a perspective view showing the clamping release structure for the connector of the present invention.
10 is a perspective view showing a connector according to another embodiment of the present invention.

The technical problem achieved by the present invention and the practice of the present invention will be apparent from the preferred embodiments described below. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the description of the present invention, expressions such as before, after, up, down, left, right, first, and second are expressions according to positions or directions that are relative to each other, and the constitution of the invention is necessarily limited to the prior meaning. Not.

3 is a perspective view showing an example in which a connector according to an embodiment of the present invention is mounted on a board. As shown, the connector 100 according to an embodiment of the present invention receives the wire 30 in the state mounted on the substrate 20 and electrically connects them, and is mounted on the substrate 20 without a separate molding part. do.

The connector 100 forms a cylindrical shape in which a plate-shaped plate processed into a predetermined shape is bent at a predetermined position, and provides a wire insertion hole 100a having one side opened. The substrate 20 mounts various elements for driving an electric device, and circuits for electrical connection of each element are printed on the surface thereof, and in particular, a mounting pad 21 for mounting the connector 100 is formed. . The wire 30 is exposed to the outside of the insulating coating 31 to a predetermined length and inserted into the connector 100.

The connector 100 is mounted on the mounting pad 21 of the substrate 20 by soldering or the like process, and the wire 30 is clamped after being inserted through the wire insertion hole 100a, thereby the substrate 20 and the wire. An electrical connection between the 30 is made.

Figure 4 is a perspective view showing a connector according to an embodiment of the present invention, a partial cutaway perspective view showing the internal structure, Figure 5 is a plan view showing the connector of Figure 4, Figure 6 is a view of the connector of Figure 4 from the wire insertion hole direction Perspective view.

Referring to FIG. 4, the connector 100 of the present invention is formed of a conductive metal plate and is bent, a mounting plate 110 fixed to the substrate 20, and a vertical direction formed at both sides of the mounting plate. And a pair of support plates 130 and a pickup plate 150 connecting the pair of support plate tops. The connector 100 having the above configuration accommodates the wire 30 in the wire connection space 100b formed between the mounting plate 110, the pair of support plates 130, and the pickup plate 150. Here, the direction in which the insertion of the wire starts is referred to as the front, and the direction in which the insertion of the wire is finished is referred to as the rear.

The connector 100 of the above configuration is a plate-shaped plate of a single structure, the plate-like plate is a mounting plate 110 in a horizontal direction parallel to the surface of the substrate 20, one end of the mounting plate 110 (one For example, the first support plate 130-1 bent upwardly at the right end of the drawing) and the horizontal direction facing the mounting plate 110 at the upper end of the first support plate 130-1. The second support plate 130-2 which is bent in the downward direction facing the first support plate 130-1 at the pickup plate 150 and the other end (eg, the left end in the drawing) of the pickup plate 150. ) Are formed continuously. Accordingly, the connector 100 of the present invention provides a wire connecting space 100b in which a plate-like plate is bent into a rectangular cylindrical shape and connected and clamped to the wire 30 therein. The front provides a wire insertion hole (100a) into which the wire 30 is inserted.

In detail, the mounting plate 110 has a lower surface mounted on the mounting pad 21 of the substrate 20 to be electrically connected thereto, and at the same time, the connector 100 is stably coupled to the substrate 20. The mounting plate 110 may be coupled to the mounting pad 21 by soldering, and may be soldered along the plate edge of the plate to stably maintain the coupling with the substrate 20. In addition, the mounting plate 110 may have a recess 111 formed from the front end to the rear side of the mounting plate 110.

In addition, the mounting plate 110 forms a blocking plate 120 which is bent to the upper end of the rear plate to prevent over-insertion of the wire 30, and is moved from the upper and left and right ends of the blocking plate 120 to the front surface. It protrudes while being bent to form a shielding wall 121 that shields the wire connection space 100b. The shielding wall 121 may be formed with a through hole 122 for checking the connection between the clamping unit 142 and the wire 30 in the wire connection space 100b, as shown in FIG. The through hole 122 is preferably formed in the upper shielding wall 121. In addition, the upper shielding wall 122 forms a stopper surface 123 extending forward to prevent overinsertion of the release tool 40 (FIG. 9) described later.

The support plate 130 is a first support plate 130-1 which is bent in an approximately vertical direction of the upper side at the right end of the mounting plate 110 and in a substantially vertical direction of the lower side at the left end of the pickup plate 150. It is composed of a pair of plates of the second support plate 130-2 to be bent, and the first support plate 130-1 and the second support plate 130-2 form a symmetrical structure facing each other. At the rear end of each support plate 130 is formed a connection plate 140 which is bent at a predetermined inclination angle to the inner wire connection space (100b). The pair of connection plates 140 are separated from the mounting plate 110 and the pickup plate 150 to have elasticity about the support plate 130, guide the insertion of the wire 30, and guide the wire 30. At the same time it is electrically connected to the) and clamped so that the inserted wire 30 is not separated.

The connection plate 140 includes an elastic portion 141 which is first bent at the end of the support plate 130 and a clamping portion 142 which is secondly bent at the end of the elastic portion 141. A connection part 143 in parallel with the support plate 130 may be further interposed between the elastic part 141 and the clamping part 142 to connect the elastic part 141 and the clamping part 142. Therefore, the connecting plate 140 forms at least a two-stage bending structure, and the connecting plate of the two-stage bending structure elastically pressurizes the wire 30 with a stronger force than the one-stage bending structure in the clamping portion 142 at the end. And more resistant to plastic deformation.

division 2 step bending 1 step bending Push (mm) 0.3 Force (N) 6.012 3.975 Plasticity (mm) 0.011 0.078

As shown in Table 1 above, when pushing the end of the clamping part to have a deformation of 0.3mm width on one side according to the assumption that the wire is inserted, in the one-stage bending structure, deformation is possible with a force of 3.975N, but two-stage bending In the structure, a force of 6.012 N is applied to achieve the same width deformation. Accordingly, it can be seen that the clamping portion 142 shows a relatively higher pressing force in the connection plate 140 of the two-stage bending structure.

In addition, the plastic deformation of the clamping portion according to the restored state after the push was applied, the plastic deformation of 0.078mm in the one-stage bending structure, but the plastic deformation of 0.011mm in the two-stage bending structure, the connection plate of the two-stage bending structure It can be seen that the clamping portion 142 at 140 shows excellent properties even in plastic deformation.

In addition, the connection plate 140 includes a clamping release part 144 in which the upper end of the connection part 143 is bent inwardly into a '∩' shape. The pair of clamping release portions 144 form a curved shape corresponding to each other inward at a predetermined interval, and when the release tool 40 is inserted therebetween, the pair of connection plates 140 are spaced apart from each other to form a wire ( 30 can be easily removed from the connecting plate 140.

In addition, the support plate 130 may include an uneven portion 131 formed at a side surface to which the connection plate 140 is connected. The concave-convex portion 131 forms a shape in which the support plate 130 and the connection plate 140 are concave or convexly protruding from the surface of the plate, and the connection plate having the end of the support plate 130 as an axis ( Tolerance is added to the elastic deformation of the 140 so that the connecting plate 140 has a larger elastic pressing force.

The pickup plate 150 is bent in an approximately horizontal direction inward from an upper end of the first support plate 130-1. Pickup plate 150 faces side by side with mounting plate 110, the upper surface of which provides a pick-up surface for adsorbing connector 100 to the mounting tool. The pick-up plate 150 also defines a stopper face 151 that protrudes to the rear end to prevent overinsertion of the release tool 40.

Meanwhile, referring to FIG. 6, the second support plate 130-2 faces the first support plate 130-1 in parallel with the first support plate 130-1 while being bent at the left end of the pickup plate 150. The end forms a mounting terminal 132 that is bent inward again. To this end, the mounting plate 110 provides a space for the mounting terminal 132 to be avoided. The mounting plate 110 and the mounting terminal 132 form the same plane at predetermined intervals, are soldered along the edges 110-1 and 132-1, and are mounted on the mounting pad 21. Therefore, the connector 100 of the present invention forms a hermetically sealed structure in which both ends are mounted on the substrate 20 while the plate-shaped plate is bent in a cylindrical shape, so that even if the wire 30 is repeatedly connected and removed, the plastic deformation is almost impossible. Without appearing, the reliability and durability of the contact can be improved.

7 is a front view showing a wire insertion structure for the connector of the present invention, Figure 8 is a front view showing a wire bending structure for the connector of the present invention.

In the connector 100 of the present invention, the lower mounting plate 110, the pair of support plates 130 on both sides, and the pick-up plate 150 on the upper side form a tubular shape, and the front of the connector 100 is opened in an approximately square shape. 100a). 7 and 8, the wire insertion hole 100a has an end B of the pick-up plate 150 retracted backward from the end B of the mounting plate 110. 100c) is formed. The avoidance groove 100c may be inclined to the end of the supporting plate 130 connecting the end A of the mounting plate 110 and the end B of the pickup plate 150 or the first vertical end 133 of the lower side. The second vertical end portion 134 of the upper side is positioned rearward, and the end portion B of the pickup plate 150 may be formed to coincide with the upper end portion of the support plate 130.

The evacuation groove 100c is such that, as shown in FIG. 7, the wire sheath 31 collides with or interferes with the upper end of the connector 100 (ie, the end of the pickup plate) when the wire 30 is inserted in the oblique direction. Prevent it. Therefore, the avoidance groove 100c increases the inclination angle θ2 into which the wire 30 is inserted in the horizontal direction so that the wire 30 can be easily connected.

In addition, as shown in FIG. 8, the wire 30 is assembled to the electric device in a state in which most of the wires are bent by about 90 ° while being connected to the connector 100. In this case, the wire sheath 31 may collide with and interfere with the end B of the pickup plate 150. Due to such collision or interference, the end of the pickup plate 150 may receive an external force upward, and an external force in an upward direction. The silver may be transferred to the mounting plate 110 and the mounting terminal 132 of the lower surface to damage the soldering of the substrate 20 or to weaken the coupling force between the connector 100 and the substrate 20. Accordingly, the avoidance groove 100c minimizes collision and interference between the wire sheath 31 and the end of the pickup plate 150 when the wire 30 is bent upward, thereby improving contact reliability and durability of the connector 100. .

division Example Comparative example Push (mm) 0.5 Force (N) 97.27 87.08 Plasticity (mm) 0.2193 0.3148

As shown in [Table 2] above, when pushing the end of the pickup plate of the wire insertion hole to the deformation of 0.5mm height upward, according to the assumption that the connected wire is bent upward by 90 °, the box structure without the avoidance groove is formed. In the pickup plate (comparative example), deformation is possible to 87.08N, but in the pickup plate (example) having a stepped groove, a force of 97.27N is applied to deform the same height. In addition, when looking at the plastic deformation according to the restored state after the deformation is applied, the comparative example shows a plastic deformation of 0.3148mm, but in the examples shows a plastic deformation of 0.2193mm.

According to this fact, when the same external force is applied above the wire insertion hole, the upper end portion of the connector with the avoidance groove is generated relatively smaller than the upper end portion of the connector without the avoidance groove, and thus, the connector is formed relative to the connector with the avoidance groove. Since a small external force is transmitted, the contact reliability and durability of the connector can be improved.

9 is a perspective view showing a clamping release structure for the connector of the present invention, Figure 10 is a perspective view showing a connector according to another embodiment of the present invention.

Referring to FIG. 9, the connected wire 30 is clamped at the sharp end of the clamping portion 142 in the wire connection space 100b and is not easily extracted. This is because the pair of clamping portions 142 press both sides of the wire 30 with strong elasticity. Therefore, in order to extract the wire 30, the pair of clamping parts 142 should be spaced apart from each other.

To this end, in the present invention, a pair of clamping release parts 144 facing each other in a curved shape is formed on the top of the connection part 143 so as to space the clamping parts 142 from each other. Accordingly, as shown in the drawing, when the release tool 40 is inserted between the pair of clamping release portions 144, the ends of the pair of clamping portions 142 together with the clamping release portion 144 may be spaced apart from each other. Can be easily extracted.

In addition, when the release tool 40 is over-inserted between the clamping release portions 144, the end of the release tool 40 presses the wire 30, making it difficult to extract the wire 30 or damage the wire 30. Can be. Accordingly, stopper surfaces 151 and 123 are formed at the ends of the pick-up plate 150 and the shielding wall 121 to protect the wire 30 by preventing over-insertion of the release tool 40.

In addition, in the connector 100 of the present invention, the clamping release portion 144 may be formed in a pair of semicircular cross sections corresponding to each other so as to correspond to the outer shape of the release tool 40.

On the other hand, as shown in Figure 10, as a means for releasing the clamping of the wire 30 may be formed directly on the connector 100 without using a separate tool.

Specifically, the pick-up plate 150 forms a pressing part 152 extending from the rear end, and a wedge-shaped insertion protrusion 154 is provided below the end of the pressing part 152. In addition, the pressing portion 152 is connected to the pickup plate 150 by the elastic piece 153 forming a curved shape. In the connector 100 having the above configuration, when the pressing part 152 is pressed while the wire 152 is connected, the insertion protrusion 154 is inserted between the pair of clamping parts 142 and thus the clamping part 142. ), The clamping of the wire 30 is released and can be easily removed.

In addition, the pressing portion 152 formed in the connector 100 as described above may be configured to extend forward from the upper end of the blocking plate 120, the insertion protrusion 154 also on both sides of the pressing portion 152. It is also possible to form a configuration.

In the present invention has been described with reference to the embodiment, it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible therefrom.

100: connector
110: mounting plate 111: recessed portion
120: blocking plate
130: support plate 130-1: first support plate
130-2: 2nd support plate 132: mounting terminal
140: connection plate 141: elastic portion
142: clamping portion 143: connecting portion
144: clamping release portion 150: pickup plate

Claims (10)

The plate-like plate is bent into a tubular shape to form a wire connection space therein, and to provide a wire insertion hole in front of the plate.
A mounting plate mounted on the substrate;
A first support plate on which an end of the mounting plate is bent upward;
A pickup plate bent to face the mounting plate at an end of the first support plate;
A second support plate bent at the end of the pickup plate so as to face the first support plate and having an end mounted on the substrate; And
And a pair of connecting plates bent from the rear ends of the first and second supporting plates to the wire connecting space to connect wires inserted into the wire connecting space.
A mounting terminal is formed at an end of the second support plate to be mounted on the substrate and bent in a direction toward the mounting plate.
A predetermined gap is formed between an edge of the mounting terminal and an edge of the mounting plate,
The predetermined interval is formed at a position closer to the second support plate than the widthwise center position of the mounting plate,
Fork-in connector.
The method of claim 1,
The mounting terminal is disposed on the same plane as the mounting plate,
Fork-in connector.
The method of claim 1,
The mounting plate has a recess formed from the front end to the rear side of the mounting plate,
Fork-in connector.
The method of claim 1,
The first and second support plates each include a first vertical end and a second vertical end formed to be located behind the first vertical end,
The first vertical end is formed below the second vertical end,
Wherein the second vertical end forms an evacuation groove that is retracted rearward relative to the first vertical end,
Fork-in connector.
The method of claim 1,
The first and second support plates each have an uneven portion formed on the side to which the connection plate is connected,
Fork-in connector.
The method of claim 1,
An elastic piece extending to bend downward from the pickup plate; And
Further comprising a pressing portion extending rearward from the elastic piece,
An end portion of the pressing portion is formed with an insertion protrusion extending downward and having a wedge shape,
Fork-in connector.
The plate-like plate is bent into a tubular shape to form a wire connection space therein, and to provide a wire insertion hole in front of the plate.
A mounting plate mounted on the substrate;
A first support plate on which an end of the mounting plate is bent upward;
A pickup plate bent to face the mounting plate at an end of the first support plate;
A second support plate bent at the end of the pickup plate so as to face the first support plate and having an end mounted on the substrate; And,
And a pair of connecting plates bent from the rear ends of the first and second supporting plates to the wire connecting space to connect wires inserted into the wire connecting space.
The pair of connection plates form a two-stage bending structure including an elastic part bent at the rear end of the first support plate and the second support plate and a locking part bent at the end of the elastic part.
Fork-in connector.
The method according to claim 1 or 7,
Each of the pair of connection plates includes a locking release part formed by bending inward from an upper end of the pair of connection plates,
The pair of connecting plates are configured to be spaced apart from each other when the release tool is inserted between the unlocking portions.
Fork-in connector.
The method of claim 8,
The pick-up plate includes a stopper face protruding from the rear end of the pick-up plate to prevent overinsertion of the release tool;
Fork-in connector.
The method of claim 8,
The rear end of the mounting plate is further bent upwards and further comprises a blocking plate to prevent overinsertion of the wire,
A shielding wall is formed to protrude while bending toward the front from the end of the blocking plate to shield the wire connection space.
The shielding wall is formed with a stopper surface to prevent overinsertion of the release tool,
Fork-in connector.

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