JP4115315B2 - Connector soldering method and jig - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method of soldering a center contact and a jig thereof, for example, in a connector such as a coaxial connector, and more specifically, transmission of electrical and electrical signals inside and outside equipment such as measuring equipment used in a high vacuum state. In the coaxial connector used for the relay of the connector, the inside of the connector is hermetically sealed, or the soldering method of the connector, or the central conductor and the outer shell are hermetically sealed with a conductive material in the outer shell. The present invention relates to a soldering method of a component, a coaxial connector outer shell, and a center contact, and a jig therefor.
[0002]
[Prior art]
Coaxial connectors used for relaying electrical and electrical signal transmission inside and outside the equipment are used in a high vacuum state, and airtightness is also achieved at the center contact portion for connecting to the core wire inside and outside. Required.
[0003]
Conventionally, as shown in FIG. 4A, an outer cylindrical metal plate 20b and a central conductor 21 are fitted to a glass cylindrical sealing material 20, and this is hermetically sealed in a glass melting temperature environment. Furthermore, as shown in FIG. 4 (B), sleeves of conductive material (for example, copper) having a crack for biasing springs (to be female contacts) at both ends of the central conductor 21. 22 is fitted and soldered.
[0004]
Then, the sealing material 20 in which the center contact composed of the center conductor 21 and the sleeve 22 is integrated is fitted into a mounting hole in the housing of the coaxial connector and soldered, and hermetically sealed to form a hermetic structure. .
As a method for hermetically sealing the center contact in the mounting hole, as shown in FIG. 4C, a seal material 20 in which the center contact (center conductor 21 and sleeve 22) 20a is integrated is coaxial. It fits into the mounting hole portion of the housing 23 of the connector, and solder is poured evenly into the gap between the inner peripheral wall surface of the mounting hole portion and the outer peripheral surface of the outer cylindrical metal plate 20b of the sealing material 20 to form a hermetic structure. .
[0005]
Thus, as shown in FIG. 4D, the coaxial connector 25 is attached to the housing 24 of a device such as a measuring instrument, a coaxial cable for connection is connected from the outside, and signals and the like are taken out to the outside. Yes. As described above, a coaxial connector having a hermetic structure that maintains hermeticity is known (for example, see Patent Document 1).
[0006]
[Patent Document 1]
JP 2001-257510 A (2nd to 4th pages, FIG. 3)
[0007]
[Problems to be solved by the invention]
However, since this coaxial connector is a coaxial connector used under high vacuum conditions in mass production of such a coaxial connector, the hermetic seal between the housing 23 and the sealing material 20 is used to improve the confidentiality. Although it is better to seal it higher, the integrated sleeve 22 may become dull in a high heat environment, and the fitting and holding force of the sleeve 22 may be reduced.
[0008]
Further, after the central conductor 21 and the sealing material 20 are simultaneously heated and integrated into the housing 23 and sealed to form a hermetic structure, the sleeve 22 is attached to the central conductor 21 and soldered by reflow. Although hermeticity is maintained, the heat of the heating furnace is difficult to be transmitted to the inside of the housing 23, and the soldering of the sleeve 22 is practically impossible.
[0009]
Furthermore, when an outer cylindrical metal plate is provided on the sealing material 20 and soldered to the housing, there is a problem that high airtightness cannot be maintained due to a solder nest or the like. Therefore, the connector soldering method and jig according to the present invention have been proposed to solve such a problem by efficiently transferring the heat of the heating furnace to the inside of the housing 23. is there.
[0010]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the gist of the connector soldering jig according to the present invention includes an arm portion formed in a length in which a tip end abuts against a soldered portion in a center contact of a coaxial connector, and the center. A positioning member that contacts the end surface of the contact and positions with the central contact; and a base portion that supports the arm portion and the positioning member and has a flange that contacts the opening end surface of the coaxial connector, The arm portion is made of a high thermal conductivity material, and the positioning member is made of a low thermal conductivity material.
[0011]
The base portion includes a fixing ring that is screwed into a connecting screw portion provided on the outer peripheral portion on the opening side of the coaxial connector.
[0012]
The connector soldering method according to the present invention includes a center conductor and a sleeve forming a center contact by fitting a soldering jig for the connector according to the present invention to a coaxial connector and flowing the coaxial connector through a heating furnace. And removing the soldering jig from the coaxial connector.
[0013]
According to the method for soldering a connector and the jig thereof according to the present invention, after making the housing and the center contact of the coaxial connector have a hermetic structure, the sleeve serving as the contact can be soldered to the center contact. The high airtightness of the coaxial connector is maintained, the sleeve is not dulled, and the fitting holding force is maintained.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Next, a connector soldering method and jig 1 thereof according to the present invention will be described with reference to the drawings. In order to facilitate understanding of the invention, portions corresponding to the conventional example are denoted by the same reference numerals as those of the conventional example.
[0015]
As shown in FIGS. 1 and 2, the soldering jig 1 includes an arm portion 2 formed to have a length in which a tip portion 2a abuts a soldered portion of a center contact 20a of a coaxial connector 25, and the center. A positioning member 3 that contacts the end surface of the contact 20a to position the center contact 20a, a flange 4a that supports the arm portion 2 and the positioning member 3 and that contacts the opening end surface of the coaxial connector 25 are provided. It has the base 4 which has.
[0016]
As shown in FIG. 2, the arm portion 2 is provided with four slits 2b in the circumferential direction orthogonal to the longitudinal direction, and is fitted to the soldered portion at the outer peripheral portion of the sleeve 22 at the distal end portion 2a. Moreover, this arm part 2 is formed with high thermal conductivity material with good thermal conductivity, such as carbon, for example.
[0017]
Furthermore, the positioning member 3 is formed of a low thermal conductivity material (heat insulating material) such as glass having a low thermal conductivity. The positioning member 3 is slidable in the axial direction with respect to the base 4. Reference numeral 5 denotes a pressing member that acts to push the positioning member 3 toward the center of the housing 23.
[0018]
As another embodiment of the soldering jig 1, as shown in FIG. 3, a connecting screw portion 25a (see FIG. 1) provided on the outer peripheral portion of the coaxial connector 25 on the opening side of the base portion 4 is provided. ) Is a soldering jig 1a provided with a fixing ring 6 to be screwed. The fixing ring 6 is rotatable with respect to the base 4.
[0019]
A method of soldering a connector according to the present invention will be described using the jigs 1 and 1a. First, as shown in FIG. 1, the sealing material 20 and the center conductor 21 are attached to the mounting hole of the housing 23 in a hermetic structure. Next, the sleeve 22 is inserted and fitted into the arm portion 2 of the jig 1. Solder paste is applied to the inner peripheral wall surface at one end of the sleeve 22 or an appropriate amount of cutting solder is contained.
[0020]
The rear end portion 22 b provided with the fitting slit 22 a in the sleeve 22 is brought into contact with the end surface of the positioning member 3. The positioning member 3 is positioned slightly behind the expected position.
[0021]
Next, the jig 1 is inserted from the opening of the coaxial connector 25 and fitted. At this time, the distal end portion of the sleeve 22 is fitted to the center conductor 21. And it pushes in until the flange 4a contact | abuts to the end surface of the opening edge part of the said coaxial connector 25. FIG.
[0022]
Next, the holding member 5 is screwed with a screwdriver or the like, and the sleeve 22 is pushed toward the center portion of the housing 23 with the tip end surface thereof, and is screwed until the tip end portion of the sleeve 22 comes into contact with the end surface of the sealing material 20. At the stage of contact, the screwing operation is stopped.
In the case of the jig 1 a having the fixing ring 6, the fixing ring 6 is screwed into the connecting screw portion 25 a to fix the jig 1.
[0023]
In this manner, the jigs 1 and 1 are inserted into the coaxial connector 25 from both openings. Then, the coaxial connector 25 is caused to flow through a heating furnace by reflow, and the center conductor 21 and the sleeve 22 constituting the center contact 20a are soldered. The heat of the heating furnace is transferred from the base 4 of the jig 1 to the arm 2 and further transferred from the tip 2a of the arm 2 to the soldering portion as shown in FIG. Thus, the heat of the heating furnace is transferred to the inner part of the housing 23 of the coaxial connector 25. Therefore, the solder paste is melted and soldered at the soldering portion, and the sleeve 22 is fixed to the center conductor 21 with the solder.
[0024]
Further, the rear end portion 22b of the sleeve 22 having the slit 22a is not heated because the heat of the heating furnace is blocked by the positioning member 3 made of a low thermal conductivity material, and the rear end portion 22b for fitting is fitted. The combined holding power is not dull.
[0025]
Thereafter, the soldering jig 1 is removed from the coaxial connector 25. As a result, the sleeve 22 is fixed to both ends of the central conductor 21 and the fitting force is maintained without being dulled, and the state shown in FIG. 4D is obtained, and the core wire of the connecting coaxial cable serves as a female contact. It is connected to the sleeve 22.
[0026]
As another soldering method, when the outer tube metal plate is in close contact with the sealing material 20, the jig 1 is used to make the state shown in FIG. By soldering the outer cylindrical metal plate 20b and soldering the central conductor 21 and the sleeve 22, the soldering operation can be completed at once. The soldering process is halved.
[0027]
【The invention's effect】
As described above, the connector soldering method and jig according to the present invention include an arm portion formed to have a length in which the tip end abuts against a soldered portion of the center contact of the coaxial connector, and the center contact. The arm portion includes a positioning member that contacts the end surface and positions the center contact, and a base portion that supports the arm portion and the positioning member and has a flange that contacts the opening end surface of the coaxial connector. Is formed of a high thermal conductivity material, and the positioning member is formed of a low thermal conductivity material, so that it is possible to perform soldering in a state where the central contact is disposed inside the coaxial connector housing, and the coaxial is maintained in a highly airtight state. It has an excellent effect of becoming a connector. In addition, since the sleeve in the center contact is not exposed to high temperature, it has an excellent effect that the spring property is maintained and the fitting force is maintained without being dull.
[0028]
Since the base is provided with a fixing ring that is screwed into the connecting screw provided on the outer peripheral portion on the opening side of the coaxial connector, the jig can be securely fixed to the housing.
[0029]
The method of soldering the connector includes fitting a jig to a coaxial connector, flowing the coaxial connector into a heating furnace, and soldering the central conductor and the sleeve constituting the central contact, and the soldering jig. Since the center conductor and sleeve attached inside the housing can be soldered, it is possible to mass-produce hermetic coaxial connectors used under high vacuum conditions. It has an excellent effect. Furthermore, the soldering process may be halved.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a connector soldering jig 1 according to the present invention.
FIG. 2 is a cross-sectional view of a connector soldering jig 1 according to the present invention.
FIG. 3 is a cross-sectional view of a connector soldering jig 1a according to another embodiment of the present invention.
4A and 4B are explanatory views (A), (B), and (C) for explaining a connector soldering method according to a conventional example, and a use state explanatory view (D) of a coaxial connector 25. FIG.
[Explanation of symbols]
1, 1a Connector soldering jig, 2 arms,
2a tip, 3 positioning member,
4 base, 4a flange,
5 Presser member, 6 Fixing ring,
20 sealing material, 20a center contact,
20b outer cylinder metal plate, 21 center conductor,
22 sleeve, 22a slit,
22b rear end, 23 housing,
25 Coaxial connector, 25a Screw part for connection.

Claims (3)

An arm portion formed in a length in which the tip portion abuts on a soldered portion in the center contact of the coaxial connector;
A positioning member that contacts the end surface of the center contact and positions the center contact;
The arm portion and the positioning member are supported, and the base portion has a flange that comes into contact with the opening end surface of the coaxial connector.
The arm is formed of a high thermal conductivity material, and the positioning member is formed of a low thermal conductivity material;
A connector soldering jig. The base is provided with a fixing ring that is screwed into a connecting screw provided on the outer peripheral portion on the opening side of the coaxial connector,
The connector soldering jig according to claim 1. The connector soldering jig according to claim 1 or 2 is fitted to a coaxial connector, and the coaxial connector is passed through a heating furnace to perform soldering between the central conductor constituting the central contact and the sleeve. Removing the soldering jig from the coaxial connector;
A connector soldering method characterized by the above.

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