KR200294601Y1 - Power connector for soldering on the printed circuit board - Google Patents

Abstract

The present invention relates to a power supply connector for mounting the board used to supply power to the board, the lead pins 22 and 24 are vertically installed through the bottom surface 32a of the rectangular plug insertion hole 32. In addition, the vertical cutting grooves 35a and 35b formed on the left and right sides of the rear wall 34 have elastic force back and forth, and rectangular engaging holes 34a and 34b are formed in the rear wall 34 and the front wall ( 36, the socket 30 is formed with a positioning cutting groove (36a); Ribs 42, 43, 44, which are fitted into and coupled to the vertical cutting grooves 35a and 35b formed in the socket 30 and the positioning cutting grooves 36a, are formed in the front and rear surfaces, and the engaging holes 34a are formed. The one-way locking projections 45a and 45b caught by the 34b are formed on the rear surface, and inside the terminal insertion holes 46 and 48 and the pinholes, which are coincident with the lead pins 22 and 24, respectively. Plugs 40 formed with 46a and 48a, and engaging projections 46b and 48b penetrated in and out of the wall surfaces of the terminal insertion holes 46 and 48; An elastic engaging piece 52 is inserted into the terminal insertion holes 46 and 48 of the plug 40 and engaged with the locking jaws 46b and 48b, and is in contact with the lead pins 22 and 24. 54 is formed at the front end, and the core wire crimping portion 56 and the cover crimping portion 58 for pinching the core wire 62 and the covering portion 64 of the wire 60 are integrally formed at the middle and the rear end portions. It is composed of the formed crimp terminal (50).

Description

Power connector for soldering on the printed circuit board

The present invention relates to a power supply connector for board mounting used to supply power to a board. More particularly, the plug and socket are engaged with each other to prevent separation, and at the same time, the core wire crimping part and the crimping crimping part of the crimp terminal are made larger. The present invention relates to a power supply connector for mounting a board, which is suitable for increasing the current capacity by allowing structural wires to secure a larger thickness.

In general, a connector is composed of a plug and a socket, a crimp terminal, and a lead pin separated by a male and female, and the crimp terminal and the lead pin are electrically energized by combining the plug and the socket with each other. Easy to assemble each part, easy to disassemble / assemble during product inspection or repair, the plug is usually pinched at the end of the wire, the socket is soldered to the printed circuit board, the signal connector and power connector Due to the difference in capacity, the lead pins are produced with different thicknesses and pitches.

In particular, the power supply connector for the board mounting used in the state of being soldered to the printed circuit board (PCB) must keep the connected state firmly because the large current flows, and the portion that pinches the wire is larger and has a larger thickness. Being able to bite the wires will benefit from supplying sufficient current to the electronics.

However, in the conventional board mounting connector, the plugs and sockets are pressed together with the lead pins because the plugs and sockets are held only by the frictional force between the lead pins and the crimp terminal, or the coupling force is maintained only by the interference between the plugs and the sockets. When the coupling force is maintained by the frictional force of the terminal, there is a problem in that the plug and the socket are very easily separated by external vibration, and when the plug and the socket are maintained by the interference fit, the process of separating / combining There is a problem in that damage to the connector or the printed circuit board because you have to apply excessive force.

On the other hand, when the plug and the socket are combined in the conventional power supply connector for board mounting, the actual energization is made by the contact of the lead pin installed in the socket and the crimp terminal inserted into the plug. Strip the end sheath using a tool such as stripper to expose the core wire to the outside, and then place the peeled part of the wire on the crimp terminal, and use the crimping tool to bend the crimp terminal and the crimp crimp of the crimp terminal inward. The wires were crimped together with the crimp terminals by pinching them into the core and sheath of the wires.

At this time, the core wire crimping part is energized with the core wire of the wire, and the cover crimping part is combined with the wire capping part of the wire to maintain the bonding force. In particular, as the core wire contact area between the core wire crimping part and the wire is widened, It is possible to flow a larger current.

However, the conventional power supply connector for mounting a board has a limitation in increasing the current capacity because it has to make the size smaller because the crimped terminal of the crimping terminal is very weak.

That is, the conventional power supply connector for board mounting simply requires the core wire crimping portion to be simply bent in a "U" shape, and thus, when the width thereof is increased, a large amount of force is required for bending and the wire is strong in the longitudinal direction. When the tensile force is applied, since the friction surface of the core wire crimp is flat, there is a problem that the core wire of the wire slides out of the core wire crimp of the crimp terminal.

In addition, the conventional power supply connector for board mounting has a constant thickness in the form of a chamfered and chamfered wire end portion of the crimp terminal and the cover crimp portion. Since the wires of the wires do not bite, there was a problem in that different crimp terminals were prepared for each of the wires.

That is, when a small-thick wire is clamped by using a crimp terminal having an extended core wire crimp and a cover crimp, the core wire crimp and the cover crimp are inward when the core wire crimp and the cover crimp are bent using a crimping tool. Since the ends of the wires are bent in a rounded state, they are not bent any longer and gaps are formed between the cores and the covering of the wires, and the crimp terminals must be produced in different sizes according to the thickness of the wires. This was there.

The present invention has been made to solve the above problems, the object of which is to maintain a more firm coupling force of the plug and socket of the connector and at the same time easy to separate / combining, while increasing the coupling force of the crimp terminal and the wire crimping It is possible to increase the current capacity by increasing the conduction area between the terminal and the lead pins, and to cut the wires of various sizes, and to increase the current capacity by increasing the conduction area of the crimp terminals and wires. In providing.

In order to achieve the object of the present invention, a rectangular plug insertion hole having one side open is formed, and a plurality of lead pins are vertically penetrated vertically through the bottom surface of the plug insertion hole and formed at left and right sides of the rear wall. It has an elastic force back and forth by the vertical incision groove, and a rectangular engaging hole is formed in the rear wall, and the front wall has a socket in which a positioning incision groove is formed, and a vertical incision groove formed in the socket and a vertical incision groove. A rib is inserted into and coupled to the front and rear surfaces, and a unidirectional locking projection is formed on the rear surface. A terminal insertion hole and a pin hole are formed on the inner side of the terminal insertion hole. A plug having a locking jaw penetrated inside and out, and an elastic locking piece inserted into the terminal insertion hole of the plug and caught on the locking jaw is formed. Forming a portion in contact with the elastic connecting the front end and, the core wire crimping portion and the coating crimping portion intermediate portion and the rear end portion integrally composed of a crimp terminal board mounted power connector formed in the is provided for each snap the core wire and the covering of the electric wire.

1 is an exploded front perspective view showing the structure of a power supply connector for mounting a board according to the present invention;

Figure 2 is an exploded rear view showing the structure of the power supply connector for mounting board according to the present invention

Figure 3 is a front perspective view showing the structure of the crimp terminal in the power supply connector for mounting board according to the present invention

Figure 4 is a rear perspective view showing the structure of the crimp terminal in the power supply connector for mounting board according to the present invention

5 is a front sectional view showing a structure of a power supply connector for mounting a board according to the present invention;

Figure 6 is a side cross-sectional view showing the structure of the power supply connector for mounting board according to the present invention

* Explanation of Signs of Major Parts of Drawings *

22, 24: Lead pin 32: Plug insertion hole

30: socket 32a: bottom

34: rear wall 34a, 34b: locking hole

35a, 35b: vertical cutout 36: front wall

36a: Positioning cutting groove 40: Plug

42,43,44: Rib 45a, 45b: One-way obstacle

46,48: terminal insertion hole 46a, 48a: pin hole

46b, 48b: engaging jaw 49: flange

50: crimp terminal 52: elastic locking piece

54: elastic connection 56: core wire crimping portion

58: cover crimp 53,55: side wall

53a, 55a: side contact portion 56a, 56b: incision hole

56e, 58e: Edge portion 60: electric wire

62 core wire 64 cover part

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIGS. 1 to 6, the present invention has a socket 30 soldered to a printed circuit board 100, a plug 40 connected to an electric wire 60, and inserted into the socket 30. , The electric wire 60 is composed of a crimping terminal 50 for mediating the wire 60 and the plug 40.

Here, the socket 30 has a rectangular plug insertion hole 32 having one side open, and a plurality of lead pins 22 and 24 penetrate up and down through the bottom surface 32a of the plug insertion hole 32. And vertically installed, and having elastic force back and forth by vertical incision grooves 35a and 35b formed on the left and right sides of the rear wall 34, and rectangular engaging holes 34a and 34b are formed in the rear wall 34. The front wall 36 is formed with a positioning cutout 36a.

The plug 40 has ribs 42, 43 and 44 vertically inserted into and coupled to the vertical cutting grooves 35a and 35b formed in the socket 30 and the positioning cutting groove 36a. It is formed, the one-way locking projections (45a, 45b) is formed on the rear surface to be caught in the engaging holes (34a, 34b), the inner side of the terminal insertion hole 46, the center of the lead pins 22, 24 coincide with 48 and pin holes 46a and 48a are formed, and locking jaws 46b and 48b are formed on the wall surfaces of the terminal insertion holes 46 and 48.

In addition, the flange portion 49 was formed along the upper edge of the plug 40 to hold it by hand to prevent the finger from slipping off the plug 40 when the plug 40 was removed from the socket 30.

Then, the crimp terminal 50 is inserted into the terminal insertion holes 46 and 48 of the plug 40 to form an elastic engaging piece 52 that is caught by the locking jaws 46b and 48b, and the lead pin 22 An elastic connecting portion 54 in contact with the 24 is formed at the tip, and the core wire crimp portion 56 and the cover crimp portion 58 for pinching the core wire 62 and the cover portion 64 of the wire 60 are respectively. It is formed integrally with the middle part and the rear end.

Herein, the elastic connecting portion 54 has an overall cross-sectional structure having a “U” shape, and bent pieces 54a and 54b formed by bending a portion of the upper end thereof inwardly so as to be bitten by the lead pins 22 and 24. It is configured to

Side surfaces of the lead pins 22 and 24 are formed on the sidewalls 53 and 55 of the elastic connecting portion 54 of the crimp terminal 50, for example, by convexly forming arcuate side contact portions 53a and 55a. The contact area of the press terminal 50 and the lead pins 22 and 24 can increase the conduction area.

In addition, a plurality of incision holes 56a and 56b are formed in the center of the core wire crimp portion 56 of the crimp terminal 50, and the core wire when the core wire crimp portion 56 and the core wire 62 of the wire 60 is bitten. Intermediate middle of the (62) was to be caught while slightly projecting through the incision hole (56a, 56b) to further increase the longitudinal coupling force of the crimp terminal (50) and the wire (60).

In addition, edge portions 56e and 58e that gradually become thinner at the edges of the core wire crimping portion 56 and the cover crimping portion 58 of the crimping terminal 50 are respectively formed and edged according to the thickness of the wire 60. The portions 56e and 58e were configured to be bent further inward.

That is, the edge portions 56e and 58e have a weaker and sharper edge portion 56e and 58e when the thickness of the wire 60 is smaller than the prescribed size, so that the core wire 62 and the crimp terminal 50 of the wire 60 are fixed. When a space is created between the core wire crimp section 56, the cover section 64 of the electric wire 60, and the cover crimp section 58 of the crimp terminal 50, the edge portions 56e and 58e are formed by the crimping force. It is configured to remove the gap once again inward bending.

In addition, a crimp terminal 50 is formed on an inner wall surface of the terminal insertion holes 46 and 48 by forming rectangular vertical grooves 46g and 48g vertically extending from an upper end to a lower locking jaw 46b and 48b. Is inserted into the terminal insertion holes 46 and 48 of the plug 40, the elastic locking piece 52 projecting slightly from the crimp terminal 50 is guided without interference.

In FIG. 3 and FIG. 4, reference numeral 51 denoted by the double-dotted line indicates a portion for transferring the material from the mold during press punching of the crimp terminal 50, which is cut after cutting or cut when used.

Hereinafter, the operation according to the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIGS. 1 to 6, a portion of the coating is deteriorated so that the core wire 62 and the coating portion 64 of the wire 60 having the core wire 62 exposed to the outside are formed on the crimp terminal 50. When the core wire crimping portion 56 and the cover crimping portion 58 are rounded inward by using a crimping tool or other crimping means, the core wire crimping portion 56 and the cover crimping portion 58 are rounded inward. The portion 56 bites the core wire 62 of the wire 60, and the cover crimping portion 58 bites the cover 64 of the wire 60.

Thus, the wire 60 and the crimp terminal 50 are crimped with the terminal insertion holes 46 and 48 of the plug 40 with the elastic connecting portion 54 of the crimp terminal 50 at the head in the state where the wire 60 and the crimp terminal 50 are coupled to each other. When the terminal 50 is inserted deeply, the crimp terminal 50 reaches the locking projections 46b and 48b formed in the plug 40 at the moment when the crimp terminal 50 reaches the bottom surface of the terminal insertion holes 46 and 48. While the elastic engaging piece 52 of the crimp terminal 50 is caught, it is in a state where it cannot be pulled out in the opposite direction.

That is, as shown in FIG. 6, the elastic engaging piece 52 formed in the crimp terminal 50 has a one-way direction, so that when it is inserted into the terminal insertion holes 46 and 48 of the plug 40, it is a hole. Sliding on the inner surface of the engaging jaw (46b, 48b) meets, it is caught by the engaging jaw 46b (48b) to its elastic resilience.

In addition, when the thickness of the electric wire 60 is relatively small, the thickness of the core wire 62 is also reduced. In this case, the core wire crimping portion 56 and the cover crimping portion 58 of the crimp terminal 50 are curled by the crimping tool. In the drying process, the edge portions 56e and 58e formed at the ends thereof are curled inward by the pressing force, thereby eliminating the gap between the core wire 62 and the covering portion 64 of the wire 60. .

In addition, the incision holes 56a and 56b formed in the core wire crimping portion 56 have a function of causing a portion of the compressed core wire 62 to protrude slightly into the incision holes 56a and 56b. When a tensile force is applied to the wire 60 in the longitudinal direction, it serves to more firmly maintain the bonding force between the crimp terminal 50 and the wire 60.

On the other hand, in the state that the lead pins 22, 24 protruding to the bottom of the socket 30 to the printed circuit board 100 is soldered to the printed circuit board 100, the plug terminal 50, which is coupled to the wire 60 is inserted ( When the 40 is inserted into the inner plug insertion hole 32 of the socket 30, the ribs 42, 43 and 44 formed vertically on the front and rear surfaces of the plug 40 are respectively socket 30 Pin holes 46a and 48a and lead pins 22 formed in the plug 40 while being inserted into and aligned with the vertical cutting grooves 35a and 35b and the positioning cutting groove 36a formed in ) 24 is also matched, and lead pins 22 and 24 are inserted into pin holes 46a and 48a.

At this time, the lead pins 22 and 24 inserted into the plug 40 are inserted into the elastic connecting portion 54 of the crimp terminal 50 inserted into the plug 40 and are in contact with each other. As soon as the plug 40 is completely in contact with the bottom surface 32a of the socket 30, the unidirectional locking projections 45a and 45b formed on the rear surface of the plug 40 are provided with the rear wall 34 of the socket 30. Is caught in the engaging holes 34a and 34b formed in the cross-section.

In this process, when the plug 40 is inserted into the socket 30, the rear wall 34 of the socket 30 is slightly pushed to the rear side by the unidirectional locking protrusions 45a and 45b formed on the plug 40. The elastically deformed one-way locking projections 45a and 45b are restored by the elastic restoring force at the moment when the one-way locking projections 45a and 45b reach the locking holes 34a and 34b, and the one-way locking projections 45a and 45b are locking holes 34a and 34b. ).

In the above state, the plug 40 is one-way locking projection 45a unless the rear wall 34 formed in the socket 30 is bent to forcibly open a gap between the rear wall 34 and the plug 40. Since it becomes in the state which caught by the socket 30 by 45b, it becomes impossible to separate from the socket 30. FIG.

The present invention as described above has a stronger bonding force because the plug and the socket is configured to maintain the bonding force by the encounter of the one-way locking projection and the engaging hole formed in each of them, when the separation is formed in the socket The plug and socket are loosened when the face wall is pushed back slightly.The plug and socket are loose when inserted, so it can be combined with a slight pushing force, so it is easy to remove / combine the wire. Since the incision hole is formed so that the core wire of the wire slightly protrudes, the bonding force between the crimp terminal and the wire can be increased, and the sharp edge portion is formed at the end of the crimp terminal and the core wire crimp portion of the crimp terminal. If the diameter is smaller than specified, this edge is more secured by the It is effective to be applied to wires of various diameters because it is configured to remove the gap between the core wire and the covering part of the electric wire and the crimp terminal and the wire crimping part of the crimp terminal. When the length of the crimping portion is extended, a larger current can flow, so that the current capacity of the connector can be increased.

Claims (6)

A rectangular plug insertion hole 32 having one side open is formed, and a plurality of lead pins 22 and 24 penetrate vertically to the bottom surface 32a of the plug insertion hole 32 to be vertically installed. The vertical cutting grooves 35a and 35b formed on the left and right sides of the rear wall 34 have elastic force back and forth, and rectangular engaging holes 34a and 34b are formed in the rear wall 34 and the front wall 36 ) The socket 30 is formed with a positioning cutting groove (36a); Ribs 42, 43, 44, which are vertically inserted into and coupled to the vertical cutting grooves 35a and 35b and the positioning cutting grooves 36a formed in the socket 30, are formed on the front and rear surfaces, and the locking The one-way locking projections 45a and 45b which are caught by the holes 34a and 34b are formed on the rear side, and inside the terminal insertion holes 46 and 48 whose centers coincide with the lead pins 22 and 24. A plug 40 having pin holes 46a and 48a formed therein, and locking jaws 46b and 48b penetrating in and out of walls of the terminal insertion holes 46 and 48; An elastic locking piece 52 is inserted into the terminal insertion hole 46 and 48 of the plug 40 and caught by the locking jaw 46b and 48b, and contacts the lead pins 22 and 24. An elastic connecting portion 54 is formed at the front end, and the core wire crimping portion 56 and the cover crimping portion 58 for pinching the core wire 62 and the covering portion 64 of the electric wire 60 respectively have an intermediate portion and a rear end portion. The power supply connector for board mounting, characterized in that consisting of a crimp terminal (50) integrally formed in the. 2. The power supply connector of claim 1, wherein a flange portion (49) is further formed along an upper edge of the plug (40). The side contact portion of claim 1, wherein the side contact portion is formed to be convex on the sidewalls 53 and 55 of the elastic connecting portion 54 of the crimp terminal 50 to be in contact with the side surfaces of the lead pins 22 and 24. Board mounting power supply connector, characterized in that the (53a) (55a) is further formed. The power supply for substrate mounting according to claim 1, wherein a plurality of cutout holes 56a and 56b are formed at the center of the core wire crimping portion 56 of the crimp terminal 50 at a predetermined interval in the longitudinal direction. connector. 5. The board mounting power connector according to claim 1 or 4, wherein an edge portion (56e) is gradually formed at the edge of the core wire crimp portion (56) of the crimp terminal (50). The power supply connector for a substrate mounting according to claim 1, further comprising an edge portion (58e) gradually thinning at the edge of the cover crimp portion (58) of the crimp terminal (50).