KR100593500B1 - Rf connector plug - Google Patents

Abstract

The present invention relates to a plug for a high frequency connector having excellent coupling force with a connector or a receptacle, and provides a plug composed of a pin and a dielectric, a main body, a collet, and a housing.

The pin is a cylindrical structure for transmitting a transmission signal, the dielectric is a cylindrical structure with a through hole into which the pin is inserted, the main body has a through hole into which the dielectric is inserted, and the collet is formed separately from the main body to be coupled to a part of the main body. It is a cylindrical structure made of a beryllium copper alloy, stainless steel, phosphorus-bronze alloy, and the housing has a through hole into which a combination of the pin and the dielectric, the body, and the collet is inserted. In such a high-frequency connector plug, the main body, collet, and housing are electrically connected to ground, and a plurality of slots are formed at one end of the collet, so that the cross section of one end of the collet is exploded. Combined with a conductor. The collet may have a straight inner surface of the body portion of the cylindrical structure, and may form a protrusion protruding into the cylindrical body portion at the end. The collet is formed through sheet metal processing, and then the sheet collet is rolled to complete the cylindrical collet having the slot. The collet and the main body can be joined to each other by inserting a fixed pillar into the through hole penetrating the collet and the main body.

The plug of the present invention greatly improves the bonding force that is coupled with the connector or receptacle, and does not drop even when used for a long time. In addition, by using only high-conductivity and expensive metal materials to produce the collet, it is possible to reduce the production cost of the plug, it is possible to make a plug with excellent bonding force through an easy and simple process and to increase the processing precision of the collet. In addition, since the plug and the connector or the receptacle are coupled to each other by the elasticity of the collet, it is possible to reduce the wear of the connector or the receptacle, and to improve the electrical characteristics of the plug by maximizing the face of the plug in contact with the ground conductor of the connector. Therefore, the RF characteristic is greatly improved by adopting the structure for impedance matching.

Plugs, Collets, Receptacles for High Frequency Connectors

Description

High-frequency connector plug {RF Connector Plug}

1A is a perspective view for explaining an industrial field of use of a plug for a high frequency connector.

1B and 1C are sectional views showing the internal structure of a conventional high-frequency connector plug.

Fig. 2A is a front view showing the structure of a pin suitable for a plug for a high frequency connector of the present invention, and Fig. 2B is a side view of Fig. 2A seen in the 2B direction.

3A is a front view of a dielectric suitable for a plug for a high frequency connector of the present invention, and FIG. 3B is a sectional view taken along line 3B-3B 'of FIG. 3A.

4A and 4B are front and sectional views of a body suitable for the plug for the high frequency connector of the present invention, and FIG. 4C is a side view of FIG. 4A seen in the direction 4C.

FIG. 5A is a front view of a plate collet suitable for the plug of the high frequency connector of the present invention, and FIGS. 5B and 5D are front and sectional views of the cylindrical collet formed by rolling the plate collet of FIG. 5A, and FIG. 5C is a view of FIG. 5B. Side view as seen from direction 5C.

Figure 5e is a front view showing the structure of a collet according to another embodiment of the present invention.

Figure 5f is a front view of a plate collet according to another embodiment of the present invention, Figures 5g to 5i is a front view, side view and cross-sectional view of the cylindrical collet formed by rolling the plate collet of Figure 5f.

6A and 6B are front and cross-sectional views of a housing suitable for a plug for a high frequency connector of the present invention.

7A is a sectional view showing a process of joining a body and a cylindrical collet;

7B is a cross-sectional view illustrating a process of forming a through hole after joining the main body and the cylindrical collet;

7C is a cross-sectional view illustrating a process of inserting a fixing pillar into the through hole of FIG. 7B.

Figure 7d is a cross-sectional view showing the process of assembling the body and the collet combination of the combination of the dielectric and the pin.

7E is a cross-sectional view illustrating a state in which a dielectric / pin assembly and a body / collet assembly are assembled;

7F is a sectional view showing a process of assembling the housing;

8A and 8B are cross-sectional views showing a coupling relationship between a plug for a high frequency connector and a receptacle of the present invention.

Figure 9 is a photograph showing the durability test (durability test) process of the plug for the high-frequency connector according to the invention and the conventional structure plug.

10 is a comparison graph of horizontal detachment force resulting from the durability test result of FIG. 9;

11 is a photograph for explaining a process of comparing the RF characteristics of the high-frequency connector plug and the conventional plug according to the present invention.

12 is a graph comparing insertion loss of a plug for a high frequency connector and a conventional plug according to the present invention.

FIG. 13 is a graph comparing return loss between a plug for a high frequency connector and a conventional plug according to the present invention; FIG.

<Description of Major Symbols in Drawing>

50: pin 70: dielectric

80: body 90: collet

94: slot 100: housing

200: plug 300: receptacle

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plug for a high frequency connector, and more particularly to a plug for a high frequency connector in which the collet and the main body are composed of separate bodies, and the coupling force of the connector is greatly improved.

1A is a perspective view for explaining an industrial field of use of a plug for a high frequency connector. The high frequency connector plug 30 is inserted into the connector 20 mounted on the circuit board 10. The connector 20 of FIG. 1A is also referred to as a receptacle. The circuit board 10 is a board used in a wireless device such as DMB (Digital Multimedia Broadcasting) or a wireless LAN device. While the plug 30 is not inserted into the receptacle 20, the DMB or the wireless LAN device transmits and receives a transmission signal through the built-in antenna. However, when the plug 30 is inserted into the receptacle 20, the DMB or the wireless LAN device is external. Transmit and receive the transmission signal through the antenna. That is, in the example of FIG. 1A, the receptacle 20 serves as an antenna switching element. In the case of DMB, an external antenna is required to increase the reception rate in the shaded area. A plug for a high frequency connector can be used to switch between the internal antenna and the external antenna. In addition, the plug for the high frequency connector can be applied to a GPS (Geographical Positioning System) terminal, a wireless LAN module, a notebook computer, a PDA, and a variety of fields such as a test process of a wireless device.

1B and 1C are cross-sectional views showing the internal structure of a conventional plug, showing MS-151-C (plug) of Hirose Electronic Co., Ltd. in Japan as an example.

1B and 1C, a plug 30 for a conventional high frequency connector includes a pin 32, a dielectric 34, a body 36, a housing 38, and a pin 32. It is inserted into the dielectric 34, the dielectric 34 is inserted into the body 36, and then coupled with the housing 38 to form the plug 30.

In the conventional plug 30, the pin 32 is an electrical conductor that transmits a transmission signal and is connected to a center conductor (not shown) of the receptacle 20, and the body 36 and the housing 38 are connected to ground. The 32 and body 36 and the housing 38 are all made of metal and the pins 32 and the body / housing are electrically insulated by the dielectric 34. At the end of the body 36, the receptacle ( The engaging portion 37 which protrudes inward is formed in a part (20) of FIG. 1A that is coupled to the part (this part corresponds to the 'collet' of the present invention structure, so it is referred to as 'collet part'). Silver plated with nickel.

The body 36 of the conventional plug 30 is of a one-piece and expensive beryllium copper alloy as shown in FIGS. 1B and 1C. In addition, since the conventional plug 30 is coupled to the receptacle by the locking jaw structure of the receptacle and the body 36, when the plug 30 is used for a long time, the locking jaw 37 is worn out and the elasticity of the body 36 is reduced, and the receptacle is closed. The bond strength with the remarkably falls. For example, the conventional plug MS-151-C is 5,000 times the number of inserts guaranteed by the manufacturer, it is difficult to use any more if you repeat the insertion / release more than 10,000 times.

The present invention is to solve the problem of the conventional plug is to allow the plug for the high-frequency connector to be firmly coupled to the counterpart (eg, receptacle).

Another object of the present invention is to provide a more inexpensive plug for a high frequency connector by lowering the cost of the plug.

It is another object of the present invention to provide a plug for a high frequency connector which is guaranteed for a long term bonding force and is inexpensive and has excellent electrical characteristics.

The plug for the high frequency connector according to the present invention is composed of a pin, a dielectric, a body, a collet, and a housing. The pin transmits a transmission signal and has a cylindrical structure made of a first metal (brass), and the dielectric has a first penetration through which the pin is inserted. It is a cylindrical structure having a hole, the main body has a second through hole into which a dielectric is inserted, and is made of a first metal, and the collet is formed separately from the main body, and is joined to a part of the main body, and the second metal (a beryllium copper alloy, a phosphor bronze alloy) , Stainless steel), and the housing has a third through hole into which a combination of the pin and the dielectric, the body, and the collet is inserted.

In the plug for the high frequency connector, the main body, the collet, and the housing are electrically connected to the ground, and a plurality of slots are formed at one end of the collet so that the cross section of one end of the collet is exploded. Combined with a conductor. The collet may have a straight inner surface of the body portion of the cylindrical structure, and may form a protrusion protruding into the cylindrical body portion at the end.

The collet is formed through sheet metal processing, and then the sheet collet is rolled to complete the cylindrical collet having the slot. The collet and the main body can be joined to each other by inserting a fixed pillar into the through hole penetrating the collet and the main body.

Example

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

   Fig. 2A is a front view showing the structure of a pin suitable for use in the plug for the high frequency connector of the present invention, and Fig. 2B is a side view of Fig. 2A seen in the 2B direction.

The pin 50 serves to transmit a transmission signal, and has a circular cross section and is connected to the first body portion 52 and the first body portion 52 having a large size, and the second body portion having a small size ( 54). The second cylindrical portion 54 is connected with the central conductor of the counterpart (connector, eg a receptacle) which is coupled with the plug. A locking jaw 55 is formed in the first body portion 52. The body of the pin 50 is designed to gradually decrease in size from the first body portion 52 to the second body portion 54 for impedance matching.

The pin 50 is made of brass, for example, and the surface is plated with gold, for example, about 0.127 mu m thick.

3A is a front view of a dielectric suitable for use with the plug of the present invention, and FIG. 3B is a cross-sectional view taken along the line 3B-3B ′ of FIG. 3A. Dielectric 70 is composed of a cylindrical body 72 has a through hole 74 in the center. The pin 50 shown in FIGS. 2A and 2B is inserted into the through hole 74. Dielectric 70 is, for example, PTFE (Polytetrafluoroethylene, commonly known under the trade name 'Teflon').

4A and 4B are front and cross-sectional views of a body 80 suitable for use with the plug of the present invention, and FIG. 4C is a side view of FIG. 4A seen in the direction '4C'.

The main body 80 is made of, for example, brass, and has a structure in which the first cylindrical portion 82, the second cylindrical portion 84, and the third cylindrical portion 86 are sequentially connected. The three cylindrical portions are all one body, the size of which is the largest outer diameter of the second cylindrical portion 84, the outer diameter of the first cylindrical portion 82 is the middle and the outer diameter of the third cylindrical portion 86 is Smallest The different diameters of the cylinders 82, 84, 86 are for impedance matching, and the diameter of the cylindrical portion is not necessarily configured by the structure shown in FIG. On the other hand, as shown in FIG. 4B, the first inner wall 83 that spans the entire first cylindrical portion 82 and a part of the second cylindrical portion 84 has the remainder of the second cylindrical portion 84 and the third cylindrical portion. The diameter is larger than the second inner wall 85 that spans the entire portion 86. The through hole 87 is present in the main body 80. The combination of the pin 50 and the dielectric 70 is inserted into the through hole 87.

4B shows a structure in which a hole 88 is formed in the third cylindrical portion 86 of the main body. The fixing column ('130' of FIG. 7C) joining the main body and the cylindrical collet is inserted into the hole 88 of the main body third cylindrical part 86. In the case where the hole 88 is formed in the third cylindrical portion 86 in advance, a process of aligning the hole 88 or the hole 96 or 96C of the collet is necessary, and the drill step described with reference to FIG. 7B is performed. Not required. On the other hand, unlike shown in Figure 4b, instead of making a hole 88 in the third cylindrical portion of the main body in advance, the collet is bonded to the main body and then drilled based on the hole (96 or 96C) present in the collet to the main body It is also possible to form a hole. This eliminates the need to align the holes in the collet with the holes in the body and improves workability.

5A is a front view of a plate collet suitable for use with the plug of the present invention, and FIGS. 5B and 5D are front and cross-sectional views showing the state of bending the plate collet of FIG. 5A, and FIG. 5C is a side view of FIG. to be.

The collet 90A is composed of a body portion 92 and a plurality of slots 94 and holes 96 formed in the body portion 92 to make one side of the body portion 92 an open structure. Shown in FIG. 5A is a collet before bending. That is, according to the present invention, the cylindrical collet 90 is made through sheet metal processing and bending process. The collet 90 is made of a beryllium copper alloy, a phosphor bronze alloy, or stainless steel. The collet 90 has a structure corresponding to the body portion 92, the slot 94, and the hole 96 shown in FIG. 5A. The sheet collet (90A) is made by dipping a metal sheet with a mold. Next, the body 92 is rolled so that the first right side 93a and the first left side 93b of the body 92 touch each other to complete the cylindrical collet 90 as shown in FIGS. 5B to 5D. When the collet 90 is formed through sheet metal processing in this way, it is possible to further increase the machining precision than to make the collet three-dimensional. Nickel may be plated on the surface of the collet 90, and the cylindrical body portion 92 has a through hole 98 into which the pin / dielectric combination is inserted.

If beryllium copper is used as the material of the collet 90, the electrical conductivity is excellent, but the price is high. Phosphor bronze is less expensive than beryllium copper. On the other hand, if the collet is made of stainless steel, the conductivity is lower but the strength is better than that of the collet made of beryllium copper or phosphor bronze. Stainless steel can be used in environments where high strength is required or where corrosion is high.

The hole 96 of the collet 90 is preferably positioned centrally with respect to the transverse direction of the body portion 92 of the plate collet 90A, with the spacing of the slots 94 being constant (eg, as shown in FIG. 5C). , At regular intervals of '2d').

Meanwhile, as shown in FIG. 5A, the first right side 93a has a stepped structure with the second right side 93c by 'd', and the first left side 93b also has a stepped structure with the second left side 93d. When the cylindrical portion 92 is rolled so that the first right side 93a and the first left side 93b come into contact with each other, a slot having a width of 2d is formed between the second right side 93c and the second left side 93d. do.

On the other hand, the right side 93a, 93b and the left side 93c, 93d of the cylindrical part 92 can also be made into a straight structure instead of having a stepped structure. The sheet collet 90B having such a structure is shown in Fig. 5E.

It is preferable to make the inner diameter of the cylindrical collet 90 slightly smaller than the outer diameter of the counterpart (for example, the ground conductor of a connector (or a receptacle)) bited by this collet 90. For example, when the inner diameter of the cylindrical collet 90 is 3 mm, the outer diameter of the grounding conductor of the connector is 3.8 mm. Although the inner diameter of the cylindrical collet 90 is smaller than the outer diameter of the counterpart, the slot 94 of the collet 90 is reduced in the process of inserting the collet 90 into the counterpart. Spread outwards, increasing the collet bore. In this case, the body portion 94 between the slots 94 is to bite the opponent by the elasticity.

The collet 90 of the present invention is characterized in that the inner surface 95 of the cylindrical portion 92 is straightened without bending as shown in FIG. 5D. The inner surface 95 of the collet cylindrical portion 92 is coupled to the grounding conductor of the receptacle. When the inner surface 95 of the collet 90 has a straight structure, the area for coupling with the grounding conductor of the receptacle increases, thereby improving signal transmission characteristics. do. Looking at this compared with the structure of the bent structure and the locking step 37 of the conventional collet shown in Figure 1b, it is easy to understand the structural difference and its effects.

According to one embodiment of the invention, it is possible to form a protrusion on the body portion of the collet. 5F-5I show collet 90C according to this date.

5F to 5I, the collet 90C according to another embodiment of the present invention is the body portion 92C, the slot 94C, and the hole 96C as described above with reference to FIGS. 5A to 5E. The sheet collet shown in FIG. 5F is rolled to complete the cylindrical collet 90C shown in FIGS. 5G to 5I. However, the collet 90C according to this embodiment further includes a protrusion 97 protruding into the cylindrical body portion 92C in the body portion 92C in which the slot 94C is formed. The protrusion 97 serves to securely connect the plug with the center conductor of the counterpart (connector, receptacle) to which the plug is coupled. Therefore, when the protrusion part 97 is formed in the body part 92C of the collet 90C, the coupling force of a connector and a plug can be heightened further. In addition, the coupling force or the pulling force may be adjusted through the protrusion height of the protrusion 97. On the other hand, if the protrusion 97 is formed without the inner surface 95 of the collet 90 being straight, as shown in FIG. 5D, the effect of increasing the area where the inner surface of the collet 90C is in contact with the grounding conductor of the receptacle is halved. Can be. In order to improve this, it is preferable to form a groove into which the protrusion 97 is inserted in the ground conductor of the receptacle.

Although the sheet collet 90A is made of sheet metal processing in the foregoing, other processes other than sheet metal processing may be used. For example, it is also possible to make a plate collet by die casting. The die casting method is a casting method mainly used for casting production, and molten metal is injected into a mold of steel machined to be precisely matched to the required casting shape (plate collet 90A). It is a precision casting method to obtain castings. The die casting method is characterized by precise dimensions and therefore requires little finishing and excellent mechanical properties.

6A and 6B show a housing suitable for use with the plug of the present invention.

The housing 100 has a first cylindrical portion 102 having the largest size, a second cylindrical portion 104 having a medium size and connected to the first cylindrical portion 102, and a second cylindrical portion 104 having the smallest size. It is composed of a third cylindrical portion 106 connected to. The cylindrical section 102, 104, 106 of the housing 100 has a plurality of stages, and the final injection molding product (usually made of urethane, which corresponds to the black body in the plug 30 for the high frequency connector of Fig. 1A) and To fit the shape. The inner surface of the housing 100 is the remainder of the first inner surface 103 and the second cylindrical portion 104 spanning the entire first cylindrical portion 102 and a portion of the second cylindrical portion 104, as shown in FIG. 6B. And a second inner surface 105 that spans the entirety of the portion and the third cylindrical portion 106. Since the first inner surface 103 and the second inner surface 105 are connected by the step 107, the diameter Φ 1 of the cylinder formed by the first inner surface 103 is a cylinder formed by the second inner surface 105. The diameter of is larger than Φ2. The structures of the first inner surface 103, the second inner surface 105, and the step 107 are determined according to the outer shape of the main body 80 inserted into the housing 100. At the end of the second inner surface 105, an inclined portion 109 is formed to be outwardly formed as shown in FIG. 6B, so that the main body 80 is easily inserted.

The material of the housing 100 is brass, for example, and is nickel-plated.

7A to 7F are cross-sectional views illustrating a process of assembling parts to make a plug according to the present invention.

As shown in FIG. 7A, the body 80 is engaged with the cylindrical collet 90. When the main body 80 and the collet 90 are coupled, the inner surface 95 of the collet 90 is brought into contact with the outer surface of the third cylindrical portion 86 of the main body 80, and the hole 96 of the collet 90 is provided. ) Is inserted before the slot 94. In addition, one end of the slot 94 is left without being completely inserted into the third cylindrical portion 86 of the body 80 of the collet 90.

Referring to FIG. 7B, after the main body 80 and the collet 90 are combined, the drill 120 is used in the third cylindrical portion 86 of the main body 80 based on the hole 96 of the collet 90. To form a through hole. As described above, when the hole 88 is already formed in the third cylindrical portion 86 of the main body 80, this drilling step can be omitted.

Referring to FIG. 7C, the fixing pillar 130 made of an electrical conductor is embedded in the through hole 125 that penetrates both the collet 90 and the body 80 and the third cylindrical portion 86. 90) are engaged with each other. On the other hand, according to another embodiment of the present invention, instead of putting the fixing pillar 130 in the through-hole 125, a solder is poured into the through-hole 125 to fix the body 80 and the collet 90. However, fixing the body and the collet by such soldering is more expensive than using the fixing pillar 130, it is difficult to control the bonding force, it is difficult to expect a uniform bonding force for the various plug products produced However, when manufacturing a low-cost plug or when manufacturing a plug that does not need to be removed after being inserted into the connector once, it is possible to fix the body and the collet through soldering.

Referring to FIG. 7D, a pin / dielectric compound in which the dielectric 70 is inserted into the pin 50 is prepared, and then combined with the main body / collet compound 80/90 completed in FIG. 7C. When preparing the pin / dielectric mixture, the dielectric 70 is first inserted into the second body portion 54 of the pin 50 in consideration of the direction of the locking step 55 of the pin 50, and then the dielectric 70 is formed. Is inserted into the first body portion 52, and the dielectric member 70 is pinned until the first body portion 52 of the pin 50 is completely inserted into the through hole 74 of the dielectric material 70. Insert in (50).

The pin / dielectric mixture 50/70 thus prepared is pushed into the body / collet composite 80/90 in the direction of arrow A of FIG. 7D, and as shown in FIG. 7E, the second body portion 54 of the pin 50 is shown. The pin / dielectric compound 50/70 is pushed into the body / collet compound 80/90 until) is completely out of the third cylindrical portion 86 of the body 80.

Referring to FIG. 7F, the housing 100 is assembled to the pin / dielectric / body / collet combination, until the step 107 of the housing 100 is caught by the second cylindrical portion 84 of the body 80. Insert housing 100 into pin / dielectric / body / collet combination. The housing 100 also serves to prevent the fixing pillar 130 that couples the body and the collet from escaping. In this way, the plug 200 according to the present invention is completed.

The plug 200 of the present invention is coupled with the receptacle 300, as shown in FIGS. 8A and 8B.

The results of testing the characteristics of the plug for a high frequency connector according to the present invention are as follows.

Durability Test

9 is a photograph showing a process of inspecting the durability of the plug for high-frequency connector 200 and the plug 30 of the conventional structure according to the present invention.

Hirose electronic receptacle KMS-532-LR is fixed to the fixed chuck 410 with two connectors 300, and the plug 200 of the present invention and the conventional plug 30 and MS-151 are attached to the movable chuck 420. -C (L_P)) is fixed, and then the moving chuck 420 is repeatedly reciprocated in the direction of arrow B of FIG. 9 to be inserted into and removed from the receptacle 300. After inserting and removing 40,000 times while checking the number of insertions and removals of the plugs 200 and 30 by the metric system 430, the horizontal detachment force and the rotational friction force of the plug 200 and the conventional plug 30 of the present invention are compared. It was.

The result of comparing the horizontal detachment force is as shown in the graph of FIG. In Figure 10, bold ■, thick ◆ is the push force and pull force of the plug 200 according to the present invention (push force) and pull (pull force), thin ■, fine ◆ is a conventional structure MS-151- The insertion and release force of C. The results in FIG. 10 are shown in Table 1 below.

Insertion / Exit Count (thousands) 0 One 3 10 15 20 25 30 35 40 The present invention Insertion force [kgf] 0.8 0.75 0.7 0.7 0.7 0.7 0.63 0.63 0.6 0.6 Release force [kgf] 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.57 Conventional structure Insertion force [kgf] 0.8 0.7 0.7 0.5 0.43 0.4 0.23 0.2 0.2 0.2 Breakaway force [kgf] One 0.95 0.8 0.7 0.55 0.4 0.3 0.22 0.2 0.2

As shown in FIG. 10 and Table 1, the plug 200 according to the present invention maintains the insertion force almost constant until the number of insertions / releases is 20,000 times, but drops from 25,000 times to 0.63 kgf. Keep constant until 40,000 times. In addition, the plug 200 of the present invention is kept constant at 0.6 kgf until the release force is 35,000 times. On the other hand, the plug of the conventional structure maintains a certain level (0.7kgf) until the insertion force up to 5,000 times, but drops to 0.5 after 10,000 times, and the insertion force decreases rapidly as the number of insertions / releases increases. . This result is similarly observed in the detachment force of the conventional plug. In addition, as a result of 40,000 insertion / deletion tests, the plug 200 of the present invention has a small insertion force difference of 0.8 kgf-0.6 kgf = 0.2 kgf, but the conventional plug 30 has a difference in separation force of 0.8 kgf-0.2 kgf. = 0.6 kgf, the deviation is very large. In addition, the plug of the present invention is only 0.6kgf-0.57kgf = 0.03kgf of the difference in the separation force, the conventional plug 30 is very large as 1.0kgf-0.2kgf = 0.8kgf of the difference in the separation force.

As shown in Table 2 below, the difference in rotational friction is almost no difference from the initial measurement of 0.4 kg to 0.3 kg after 40,000 insertions / deletions in the plug 200 of the present invention, but in the conventional plug 30 at the initial measurement of 0.3 kg. The measurement after 40,000 insertions / deletions was very low at 0.1 kg.

Initial measurement Measured after 40,000 insertions / releases The present invention 0.4 kg 0.3 kg Conventional structure 0.3 kg 0.1 kg or less

Visual inspection

When the plug 200 of the present invention and the plug 30 having a conventional structure were inspected after being inserted / detached 40,000 times as described above, in the conventional plug 30, partial damage of the component can be visually observed. This phenomenon did not appear in the plug 200 of the invention.

RF characteristic inspection

The RF characteristic of the plug for the high frequency connector according to the present invention was examined to compare with the conventional plug. As shown in FIG. 11, Rogers' RO4003 12mil substrate was prepared as the inspection substrate 500, and the first port 510 and the second port 520 on both sides of the substrate were strip line 530. Connected. The first port 510 is composed of an SMA connector of 26.5 ㎓ and the second port 520 is composed of KMS-532-LR of Hirose Electronics. The first port 510 is connected to a vector analyzer (not shown), and the second port 520 is connected to the high frequency connector plug 200 and the conventional plug 30 according to the present invention. RF characteristics were examined. Inspection conditions are shown in Table 3 below.

Item Test Methods standard Contact resistance Measured with DC 100Ω Center Contact: 100㏁ or less Insulation Resistance Measured at DC 100 V Outer Contact: 50㏁ or less Withstand voltage AC 100V voltage applied for 1 minute No short circuit / insulation breakdown VSWR DC to 3 ㎓ (HP8510C) 1.2 or less Insertion loss DC to 3 ㎓ (HP8510C) 0.5㏈ or less

As shown in the graph of FIG. 12, the insertion loss shown in the test result shows that the insertion loss 550 using the plug of the present invention is superior by about 0.04 μs compared with the insertion loss 560 of the conventional plug.

As shown in the graph of FIG. 13, the return loss showed better return loss 580 over the entire band than the return loss 570 of the conventional plug when using the plug of the present invention.

According to the present invention, the main body and the collet are separately formed, and a slot is formed at one end of the collet so that the cross section is exploded, thereby greatly increasing the coupling force to which the plug for the high frequency connector is coupled to the connector or the receptacle, even when the plug is used for a long time. Do not fall. In addition, the collet is made of an expensive metal material having excellent electrical conductivity, but a separate body can use a low-cost metal material, thereby reducing the production cost of the plug.

In addition, since the plug according to the present invention forms a collet by sheet metal processing, it is possible to make a plug having excellent bonding strength through an easy and simple process, and to increase the processing precision of the collet. In addition, since the plug and the connector or receptacle are coupled to each other by the elasticity of the collet, wear of the connector or the receptacle can be reduced.

In addition, according to the present invention, the surface of the plug in contact with the ground conductor of the connector can be maximized to improve the electrical characteristics of the plug, and the RF characteristic is greatly improved by adopting a structure for impedance matching.

Claims (9)

As a plug for a high frequency connector, A cylindrical pin made of a first metal for transmitting a transmission signal, A dielectric having a cylindrical structure having a first through hole into which the pin is inserted; A main body made of a first metal having a second through hole into which the dielectric is inserted; A cylindrical collet coupled to a portion of the body and formed of a second metal; A housing made of a first metal having a third through hole into which a combination of the pin and the dielectric, the body and the collet is inserted, The body, collet and housing are electrically connected to ground, A plug for a high frequency connector, wherein a plurality of slots are formed at one end of the collet, and the cross section of one end of the collet is broken. In claim 1, The first metal is brass, the second metal is a beryllium copper alloy, a phosphor bronze alloy, a plug for a high frequency connector, characterized in that any one metal selected from the group consisting of stainless steel. In claim 1, The collet is a high-frequency connector, characterized in that the sheet metal processing and then rolled to form a cylindrical structure. In claim 1, The collet is made of a plate collet by the die casting method, and the plate collet is rolled to form a cylindrical structure, characterized in that formed in a cylindrical structure. In claim 1, The collet is a plug for a high frequency connector, characterized in that the inner surface of the body portion of the cylindrical structure is a straight surface. In claim 1, The collet is a plug for a high frequency connector, characterized in that the inner surface of the body portion of the cylindrical structure is a straight surface and a protrusion protruding into the inside of the cylindrical structure body portion is formed at the end. In claim 1, And the collet and the main body are coupled to each other by inserting a fixed pillar into a through hole passing through the collet and the main body. In claim 1, And the collet and the main body are coupled to each other by soldering to the through holes penetrating the collet and the main body. As a plug for a high frequency connector, A cylindrical pin made of a first metal for transmitting a transmission signal, A dielectric having a cylindrical structure having a first through hole into which the pin is inserted; A main body made of a first metal having a second through hole into which the dielectric is inserted; A cylindrical collet coupled to a portion of the body and formed of a second metal; A housing made of a first metal having a third through hole into which a combination of the pin and the dielectric, the body and the collet is inserted, The body, collet and housing are electrically connected to ground, One end of the collet has a plurality of slots are formed so that the cross section of one end of the collet has a structure, The second metal is any one metal selected from the group consisting of beryllium copper alloy, phosphor bronze alloy, stainless steel, The collet has a straight inner surface of the main body portion of the cylindrical structure and a protrusion protruding into the inner side of the cylindrical structure body portion is formed at the end thereof. And the collet and the main body are coupled to each other by inserting a fixed pillar into a through hole passing through the collet and the main body.

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