Source: https://patents.google.com/patent/KR20130015367A/en
Timestamp: 2019-11-15 03:49:31
Document Index: 715688753

Matched Legal Cases: ['arts 13', 'art,\n2', 'art;\n4', 'arts 20', 'art 111', 'art 113', 'art 111', 'art 113', 'art 111', 'arts 111', 'arts 111', 'arts 111', 'arts 111', 'art 111', 'art 115', 'art 115', 'art 119', 'arts 119', 'art 111', 'art 119', 'art 113', 'art 113']

KR20130015367A - Contact terminal - Google Patents
KR20130015367A
KR20130015367A KR1020110077321A KR20110077321A KR20130015367A KR 20130015367 A KR20130015367 A KR 20130015367A KR 1020110077321 A KR1020110077321 A KR 1020110077321A KR 20110077321 A KR20110077321 A KR 20110077321A KR 20130015367 A KR20130015367 A KR 20130015367A
KR1020110077321A
KR101817804B1 (en
2011-08-03 Application filed by 삼성전자주식회사 filed Critical 삼성전자주식회사
2013-02-14 Publication of KR20130015367A publication Critical patent/KR20130015367A/en
2018-01-11 Publication of KR101817804B1 publication Critical patent/KR101817804B1/en
The present invention, a contact pin; And a leaf spring supporting the contact pin, wherein a portion of the leaf spring is connected to the circuit board. The contact terminal configured as described above may have a stable connection structure by supporting the contact pin with a leaf spring to allow connection with other mating parts, and the length of the contact pin, more specifically, the contact pin exposed to the appearance of the product. Since the load applied to the leaf spring can be adjusted by adjusting the length of the leaf spring, it is easy to secure durability even if the leaf spring is not supported by a separate elastic body.
Contact terminal {CONTACT TERMINAL}
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to electronic components, and more particularly, to a contact terminal that provides a connection between two different components, such as a battery pack or various cables such as a portable electronic device.
Typically, a portable terminal having a detachable battery pack or a device or component that requires electrical connection by combining two different components such as a communication cable, a memory card socket, a docking cradle of the portable terminal, and the like, has various forms of contact. A terminal is provided.
For example, a portable terminal having a detachable battery pack arranges a fixed connection piece on the battery pack, and a contact terminal using a leaf spring, commonly called a C-clip, is disposed on the terminal body. Done. When the battery pack is coupled to the main body of the terminal, the connection piece of the battery pack can maintain a stable connection state by pressing the contact terminal of the terminal main body to some extent. Generally known contact terminals are constructed using leaf springs, and are provided in a connection structure of a battery pack connection structure or a communication cable.
On the other hand, traffic cards, security card for the passenger authentication, credit card, etc. are used for payment or user authentication by using near field communication (NFC). It is becoming. Therefore, the portable terminal is provided with a separate antenna for performing the NFC function, such an antenna for NFC may be installed in the battery cover. In addition, the battery cover is provided with an antenna or a coil for wireless charging, etc., the contact terminal must be installed for connecting the antenna or coil and the circuit built in the terminal body.
1 and 2 illustrate a contact terminal 30 according to an embodiment of the prior art. The contact terminal 30 shown in FIGS. 1 and 2 is formed in a letter 'S' shape by bending a metallic plate, and has contact portions 33a and 33b protruding from the upper and lower ends, respectively. When the contact terminal 30 is installed in the housing 11 of the terminal, one of the contact portions 33a and 33b contacts the circuit board 13 embedded in the housing 11, and the other A counterpart, for example, a battery pack, is in contact with the connecting piece 23. In FIG. 2, the modified shape of the contact terminal 30 is not illustrated, and the contact portions 33a and 33b partially overlap the circuit board 13 and the connection piece 23. Substantially, the contact portions 33a and 33b are in contact with the surface of the circuit board 13 or the connecting piece 23 so that the contact terminal 30 is deformed to be compressed up and down. At this time, the elastic force generated due to the compression of the contact terminal 30 is generally concentrated in the bent portion (35a, 35b) of the contact terminal 30. Examples of such contact terminals are variously disclosed through Korean Patent No. 960,959 (registered May 25, 2010).
This conventional C-clip type contact terminal has a structure in which a load is concentrated at a bent portion, so that it must be supported by a separate elastic body 37 such as silicone or urethane to ensure durability. That is, in order to maintain a stable contact state, the C-clip maintains a state in which a certain amount of load is applied. When such a load is excessive, the C-clip may be permanently deformed, so that the elastic body 37 To support the seed clip. In addition, since a predetermined area or more of the C-clip is exposed to the outside for stable connection, there is a problem of deteriorating the appearance of the portable terminal. In addition, since the C-clip itself is manufactured by bending the plate, a sharp part is formed on the side, and a part exposed to the outside may injure the user or be damaged by an external environment.
In general, an elastic module known as a pogo pin can be used to compensate for the disadvantages of such a C-clip.
3 and 4 illustrate a structure of a general pogo pin 40 and a configuration in which two different parts 13 and 23 are connected by using the pogo pin 40. The pogo pin 40 is configured to receive a portion of the contact pin 43 in the tube 41, the contact pin 43 is inserted into the tube 41 or in the direction to be drawn out of the tube 41 It is installed to enable linear reciprocating motion. At this time, the coil spring 45 is accommodated in the contact pin 43, the end of which is projected to one end of the contact pin 43 is supported by the tube 41. The coil spring 45 provides an elastic force acting in the direction in which the contact pin 43 is withdrawn from the tube 41.
The pogo pin 40 is installed on the terminal with one end of the tube 41 in contact with a circuit board 13 such as a terminal, and the other end of the contact pin 43 protrudes out of the terminal. do. At this time, it is preferable that a separate C-clip 19 is disposed between the circuit board 13 and the tube 41 to stably connect the pogo pin 40 to the circuit board 13. When the pogo pin 40 is utilized as a contact terminal for connecting the battery pack, when the battery pack is coupled to the terminal, the connecting piece 23 of the battery pack is connected while pressing the end of the contact pin 23, The contact pin 23 is retracted into the tube 41. At this time, the elastic force accumulated while the coil spring 23 is compressed maintains the state in which the contact pin 43 is connected to the connecting piece 23 and the tube 41 is connected to the circuit board 13. Done.
Considering the durability and the appearance of the terminal, such pogo pins have superior quality compared to leaf springs, but they are expensive and not only increase the manufacturing cost, but also generate noise due to relative movement between the components of the pogo pins themselves. There is a problem.
Accordingly, the present invention is to provide a contact terminal inexpensive and easy to secure durability.
In addition, the present invention is to provide a contact terminal that can contribute to improving the appearance of the portable terminal or the docking cradle by minimizing the exposure of the contact terminal.
In addition, the present invention is to provide a contact terminal that can maintain a stable connection state while preventing permanent deformation.
Thus, the present invention provides a contact pin; And a leaf spring supporting the contact pin, wherein a portion of the leaf spring is connected to the circuit board.
The contact terminal may include a binding groove formed in the contact pin; And binding pieces formed on the leaf spring, wherein the binding pieces are engaged with the binding groove so that the contact pin is fixed to the leaf spring.
In this case, the binding groove is formed on the outer peripheral surface of one end of the contact pin.
The leaf spring may include a first support bent in a curved shape; And a second support portion extending in a straight line form from one end of the first support portion.
At this time, the contact terminal, the binding groove formed in the contact pin; And a pair of binding pieces extending from an end of the second support portion,
The contact pin is positioned between the binding pieces, and the binding pieces are engaged with the binding groove so that the contact pin is fixed to the leaf spring.
In this case, the first support part is connected to the circuit board, and the second support part is positioned in parallel with the circuit board.
In addition, the contact terminal, the one end of the first support portion is extended so as to face in parallel with the second support portion, the folded portion overlapping a portion of the leaf spring; And a fastening hole formed to penetrate the folding portion.
In addition, the contact terminal may further include a reinforcement part extending to face each other on both sides of the first support part.
In constructing the contact terminal as described above, it is preferable that one end of the contact pin is bound to the leaf spring, and the other end of the contact pin is made of a curved surface.
The contact terminal configured as described above can have a stable connection structure by supporting the contact pin with a leaf spring to enable connection with other mating components. At this time, since only the end of the contact pin is exposed to the outside of the portable terminal or the docking cradle, it can contribute to improve the appearance of the product. In addition, since the load applied to the leaf spring can be adjusted by adjusting the length of the contact pin, more specifically, the length of the contact pin exposed to the appearance of the product, it is easy to ensure durability even without supporting the leaf spring with a separate elastic body. In addition, it can be manufactured at low cost, contributing to the reduction of manufacturing cost.
1 is a perspective view showing a contact terminal according to an embodiment of the prior art,
2 is a cross-sectional view showing a state in which the contact terminal shown in FIG. 1 is installed in a portable terminal;
3 is a view illustrating a partial cutaway of a contact terminal according to another embodiment of the prior art;
4 is a configuration diagram illustrating a state in which the contact terminals illustrated in FIG. 3 electrically connect two different components;
5 is a perspective view showing a contact terminal according to the present invention.
6 is a cross-sectional view showing a state in which the contact terminal shown in FIG. 5 is installed in a portable terminal.
5 and 6, the contact terminal 100 according to the preferred embodiment of the present invention includes a leaf spring 101 and a contact pin 102. The leaf spring 101 is mounted inside the main body housing 11 of the product 10 such as a portable terminal or a docking cradle, and the contact pin 102 is supported by the leaf spring 101 and a part thereof is It protrudes out of the main body housing 11. The counterpart parts 20 such as a battery pack or a battery cover are coupled to the main body housing 11. ) Is provided.
When the second housing 21 is coupled to the body housing 11, the connecting piece 23 is located at a point corresponding to the contact pin 102. Since the contact pin 102 protrudes out of the main housing 11, the end thereof contacts the connecting piece 23. In this case, the leaf spring 101 provides an elastic force for bringing the contact pin 102 into close contact with the connection piece 23, so that the contact terminal 100 and the connection piece 23 maintain a stable connection state. Done.
The leaf spring 101 includes a first support 111 and a second support 113. The first support part 111 extends in a curved shape and is connected to a circuit board 13 installed in the main body housing 11, and the second support part 113 is straight from one end of the first support part 111. Extends. In this case, the second support part 113 may extend in a curved shape. However, when the second housing 21 is coupled to the body housing 11, the contact pin 102 protrudes out of the body housing 11 to be stably connected to the connection piece 23. Note that you must be able to provide elastic force to allow
The first support part 111 of the leaf spring 101 is in contact with the circuit board 13, and the contact pin 102 is in contact with the connection piece 23, respectively, so that the first and second support parts 111 and 113 are in contact with each other. ) Is deformed in a direction close to each other, but the first and second supporting parts 111 and 113 in FIG. 6 are shown in a shape before contacting the circuit board 113 and the connecting piece 23. Note that
In configuring the first and second support parts 111 and 113, the first and second support parts 111 and 113 may be formed to face each other, and the first support part 111 may be formed at one end thereof. It gradually extends away from the second support portion 113, and extends in parallel with the second support portion 113 in the middle portion, the other end has an U-shaped alphabet, but the projecting portion in contact with the circuit board 13 It is preferable to form.
In order to fix the contact terminal 100, more specifically the leaf spring 101 in the body housing 11, at least a portion of one end of the first support portion 111 may be connected to the second support portion 113. It is preferable to form the folding part 115 by extending in parallel to face each other. A through hole 117 is formed in the folding part 115, and the contact terminal 100 is fixed to the inside of the body housing 11 by using the through hole 117. In this case, the folding portion 115 preferably overlaps a portion parallel to the second supporting portion 113 at one end of the first supporting portion 111 in close contact with the second supporting portion 113. .
In order to fix the contact terminal 100 to the inside of the body housing 11, a fixing protrusion 15 may be formed on an inner side surface of the body housing 11. The body housing 11 is manufactured by injection molding, and the leaf spring 101 is coupled to the inside of the body housing 11 so that the fixing protrusion 15 penetrates the through hole 117. As a result, the contact terminal 100 is installed inside the body housing 11. In this case, the fixing protrusion 15 is preferably fused to the end thereof to fix the contact terminal 100, more specifically, the leaf spring 111 so as not to flow.
On the other hand, in the state where the contact terminal 100 is connected to the circuit board 13, the leaf spring 101, in particular, the first extension portion 111 maintains a state in which the elastic force is accumulated, so that it is permanent The reinforcement part 119 may be provided to prevent deformation. The reinforcement parts 119 are formed to extend to face each other at both sides of the middle portion of the first extension part 111. As a result, the reinforcement part 119 reinforces the elastic force of the leaf spring 101 and prevents permanent deformation, thereby improving durability of the contact terminal 100.
A binding piece 114 is formed at the end of the second support part 113. The binding piece 114 extends in parallel from one end of the second support portion 113 in parallel with each other. The binding piece 114 is engaged with the contact pin 102 to fix the contact pin 102 to the leaf spring 101.
A binding groove 121 is formed at one end of the contact pin 102. The binding groove 121 is formed to be recessed along the outer circumference of one end of the contact pin 102. The other end 123 of the contact pin 102 is a portion protruding to the outside of the body housing 11, it is preferable to have a curved shape. The other end 123 of the contact pin 102 has a curved shape, so that the contact pin 102 is connected to the connection piece 23 when the second housing 21 is coupled to the body housing 11. Stable contact
The contact pin 102 is coupled by interference fit between the binding pieces 114, in which the binding groove 121 is engaged with the binding pieces 114. In this way, the contact pin 102 is fixed to the leaf spring 101.
When the contact terminal 100 is installed inside the body housing 11, the second support part 113 has an elastic force acting in a direction to protrude the contact pin 102 to the outside of the body housing 11. We mentioned earlier that we provide. At this time, the second support portion 113 is in interference with the inner circumferential surface of the main body housing 11 to maintain a straight shape while maintaining a parallel state with the circuit board 13.
On the other hand, according to the length of the contact pin 102 protrudes out of the body housing 11, when the second housing 21 is coupled to the body housing 11, the second support portion 113 is The curvature to be deformed is determined. The curvature after the second support 113 is deformed determines the load applied to the second support 113, which is an important factor that determines the durability of the second support 113. Therefore, the contact pin 102 is projected to the outside of the main body housing 11, the length can be adjusted appropriately to adjust the load applied to the second support portion 113. As a result, by adjusting the length of the contact pin 102 it is possible to improve the durability of the second support (102).
The contact terminal 100 as described above has an end portion 123 protruding to the outside of the main body housing 11 in the form of a fin, and is formed in the main body housing 11 to protrude the contact pin 102. The hall becomes small, which makes it possible to make the appearance of the portable terminal and the like beautiful. In addition, the portion supporting the contact pin 102, that is, the second support portion 113 has a straight shape, when compared to the bent form of the conventional sea-clip type contact terminal, this type of leaf spring ( 101) there is no fear of permanent deformation. In addition, the conventional contact terminals using pogo pins have superior quality compared to the C-clip contact terminals in terms of durability, such as the volume of the contact terminal, the effect on the appearance of the product, and the permanent deformation. We mentioned earlier that there is a disadvantage that is high. Compared with such a pogo pin, the contact terminal 100 according to the present invention can be manufactured at a lower cost than the pogo pin.
In the foregoing detailed description of the present invention, specific embodiments have been described. However, it will be apparent to those skilled in the art that various modifications can be made without departing from the scope of the present invention.
100: contact terminal 101: leaf spring
111: first support portion 113: second support portion
114: binding piece 115: folds
102: contact pin 121: binding groove
In the contact terminal,
Contact pins; And
A leaf spring supporting the contact pin,
A part of said leaf spring is connected to a circuit board.
Binding grooves formed in the contact pins; And
Further provided with binding pieces formed in the leaf spring,
And the binding pins are engaged with the binding groove so that the contact pin is fixed to the leaf spring.
The contact terminal according to claim 2, wherein the binding groove is formed on an outer circumferential surface of one end of the contact pin.
The method of claim 1, wherein the leaf spring,
A first support bent in a curved shape; And
And a second support portion extending in a straight line form from one end of the first support portion.
And a pair of binding pieces extending from an end of the second support portion,
And the contact pin is located between the binding pieces, and the binding pieces are engaged with the binding groove so that the contact pin is fixed to the leaf spring.
The contact terminal according to claim 5, wherein the binding groove is formed on an outer circumferential surface of one end of the contact pin.
The contact terminal as claimed in claim 4, wherein the first support part is connected to the circuit board, and the second support part is located in parallel with the circuit board.
One end of the first support portion extends to face each other in parallel with the second support portion, and a fold portion in which a portion of the leaf spring is overlapped; And
The contact terminal further comprises a fastening hole formed to penetrate the folding portion.
The contact terminal further comprises a reinforcing part extending to face each other on both sides of the first support.
The contact terminal according to claim 1, wherein one end of the contact pin is bound to the leaf spring and the other end is a curved surface.
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