KR100456275B1 - Coaxial connector - Google Patents

Abstract

The attachment of the ground shell 2 provides a coaxial connector to which the ground shell 2 is attached, without a bending process, and without any space between the insulating housing 3. At the attachment position of the insulating housing 3, the ground shell 2 abuts against the pressure receiving surface 7b of the insulating housing 3, and is insulated from the upper surface of the inner side of the shell body 21. The positioning surface 8a which pinches | interposes is formed, and the tapered surfaces 7c and 8b are formed in at least one of the rear side of the positioning surface 8a, or the front side of the pressure receiving surface 7b. The insulating housing 3 pushed forward into the ground shell 2 is guided to the attachment position where the pressure receiving surface 7b faces the positioning surface 8a by the tapered surfaces 7c and 8b. In the attachment position, the insulating housing 3 is sandwiched between the positioning surface 8a and the inner upper surface of the shell body 21, so that the insulating housing 3 is simply pushed into the ground shell 2, I can fix it without shaking.

Description

Coaxial Connector

The present invention relates to a coaxial connector to which an earth shell is attached around an insulating housing.

In order to connect a coaxial cable through which a high frequency signal flows, for example, to a printed wiring board attached to an electronic device such as a mobile phone, a coaxial connector connected to the coaxial plug of the terminal of the coaxial cable is mounted on the printed wiring board. Doing. 9 and 10 are a front view and a side view of this conventional coaxial connector 100, the coaxial connector is a cylindrical sleeve (provided integrally protruding integrally to the rectangular body-shaped housing body 101a and its front side (left in FIG. 10) ( 101b) and an insulating housing 101, and a ground shell 102 attached to the periphery thereof.

In the cylindrical sleeve 101b, a plug insertion hole 103 for inserting a plug pin of a coaxial plug (not shown) from the front is drilled, and the signal terminal 104 is insulated by bringing the contact portion into the plug insertion hole 103. Is attached to 101.

The ground shell 102 is formed by integrally forming a shell body 102a covering the plane and both sides of the housing body 101a and a cylindrical shell 102b covering the circumference of the cylindrical sleeve 101b with a conductive metal plate. Attachment of the ground shell 102 to the insulating housing 101 is performed by inserting the cylindrical sleeve 101b into the cylindrical shell 102b, and then attaching the pair of mounting pieces of the shell body 102a shown in broken lines in the figure. As indicated by the arrow, 105 is bent and fixed along the bottom surface of the housing body 101a.

In this way, the insulation housing 101 with the signal terminal 104 attached to the center is covered with the ground shell 102 so that the impedance of the coaxial connector 100 is matched with the intrinsic impedance of the coaxial cable. The transmission characteristic of the high frequency signal flowing through the signal terminal 104 is not deteriorated.

The coaxial connector 100 to which the signal terminal 104 and the ground shell 102 are attached is surface mounted on the printed wiring board 110, and the ground leg 102c bent outward of the shell body 102a. The terminal leg 104a of the signal terminal 104 protruding toward the rear side of the insulating housing 101 is soldered to the ground pattern and the signal pattern of the printed wiring board 110, respectively.

When the plug pin of the coaxial plug is inserted from the front of the plug insertion hole 103, the tubular ground terminal provided around the plug pin of the coaxial plug is in elastic contact with the contact portion facing the plug insertion hole 103. , The outer surface of the cylindrical shell 102b is engaged with the ground shell 102.

However, in the aforementioned conventional coaxial connector 100, in order to fix the pair of mounting pieces 105 of the shell body 102a along the bottom surface of the housing body 101a to fix the ground shell 102, Although a bending process is required, the mounting piece 105 is slightly returned after bending by the elasticity of the ground shell 102 itself, and a gap (δ, FIG. 9) is formed between the bottom surface and in close contact. It is not possible to fix.

For this reason, the whole of the insulating housing 101 may shake up and down in the ground shell which fixed the ground leg part 102c to the surface of the printed wiring board 110, and the signal attached to the insulating housing 101 may be There has been a problem that it is impossible to keep the terminal leg 104a of the terminal 104 coplanar with the ground leg 102c, that is, parallel to the surface of the printed wiring board 110.

In particular, since the insulating housing 101 is moved even after the coaxial connector 100 is mounted on the surface of the printed wiring board 110, the plug housing is inclined with respect to the axial direction of the plug insertion hole 103. Also following (101), in the soldering part between the terminal leg part 104a and a signal pattern, there exists a possibility that pattern peeling may occur, and there existed a problem in reliability.

SUMMARY OF THE INVENTION In view of such a conventional problem, an object of the present invention is to provide a coaxial connector to which a ground shell is attached, without a bending process, and without a clearance between the insulating housings.

It is also an object of the present invention to provide a coaxial connector that does not inadvertently short between the terminal leg and the ground shell.

1 is a perspective view of the coaxial connector 1 viewed obliquely from the back according to an embodiment of the present invention;

2 is a perspective view of the coaxial connector 1 viewed obliquely from the front,

3 is a side view showing an initial process of attaching the insulating housing 3 to the ground shell 2,

4 is a side view showing a process of attaching the insulating housing 3 to the ground shell (2),

5 is a side view showing a state in which the insulating housing 3 is pushed to the attachment position with respect to the ground shell 2;

6 is a rear view of the coaxial connector 1,

7 is a side view showing a state in which the coaxial plug 120 is connected to the coaxial connector 1,

8 is a perspective view of the insulating housing 3 viewed from the bottom;

9 is a front view of a conventional coaxial connector 100,

10 is a side view of the coaxial connector of FIG.

* Explanation of symbols for main parts of the drawings

1: Coaxial Connector 2: Ground Shell

3: Insulation housing 4: Signal terminal

4b: Leg of signal terminal 5: Switch terminal

5a: Leg of switch terminal 7: Pressure receiving protrusion

7a: guide portion 7b: pressure receiving surface

7c: housing side tapered surface 8: end plate part

8a: positioning surface 8b: shell side taper surface

9: window hole (fall prevention mechanism) 10: locking projection (fall prevention mechanism)

21: shell body 21A: side plate

22: cylindrical shell (cylindrical shell) 31: housing body

31a: Front side of housing body 31b: Rear side of insulated housing

32: cylindrical sleeve (cylindrical sleeve) 120: coaxial plug

An object of the present invention is to solve such a problem, and the coaxial connector according to the invention of claim 1 includes: an insulating housing provided with a tubular sleeve integrally protruding forward from a part of the front surface of the housing body; A signal terminal in contact with the plug pin of the coaxial plug inserted in the tubular sleeve and contacting the plug pin of the coaxial plug, and a ground shell integrally formed with the tubular shell forward from the shell body covering at least the side and the plane of the housing body; In the coaxial connector for attaching the ground shell to the insulated housing at the mounting position of the cylindrical sleeve from the rear of the cylindrical shell,

An insulation housing inserted forward to the attachment position with respect to the earthing shell is provided at the corresponding portions of the insulation housing and the earthing shell to prevent it from falling out, and at the earthing shell, at the attachment position, A positioning surface is formed which abuts against the pressure receiving surface and sandwiches the insulating housing between the inner upper surface of the shell body, and at the rear of the positioning surface or at the front of the pressure receiving surface, downward toward the rear. It is characterized by making an inclined taper surface continuous.

When the insulated housing is inserted in front of the ground shell, the insulated housing or ground shell is brought into contact with the tapered surface which is continuous to the rear of the positioning surface or to the front of the surface under pressure. Since the tapered surface is inclined downward toward the rear side, with the insertion forward, the insulating housing is pushed up to the inner top surface of the shell body and guided to the attachment position where the positioning surface is in contact with the surface under pressure.

In the attachment position, the insulating housing is sandwiched between the positioning face of the ground shell and the inner top face, so that it is fixed without shaking or rattling in the vertical direction.

The front side of the housing body is regulated by abutting the cylindrical shell from the attachment position, and the child to the rear side is regulated by the fall prevention mechanism. Accordingly, the insulation housing can be fixed without shaking by simply inserting the insulating housing into the ground shell without the bending process of the ground shell.

The coaxial connector of claim 2, wherein the pair of side plates of the shell body covering the lateral side of the housing body each have an end plate portion projecting from the bottom portion to the rear, and the plane of the end plate portion has a positioning surface and a shell side taper surface behind it. The insulating housing has a pair of pressure receiving protrusions protruding from both sides of the housing body to both sides, and the bottom of the pressure receiving protrusion is the pressure receiving surface and the tapered surface of the housing side in front of the housing, and the pressure is received on the side plate. The protrusions are folded to move, and the insulating housing is inserted to the attachment position with respect to the ground shell.

When the insulating housing is inserted forward with respect to the ground shell, the shell side tapered surface of the ground shell abuts against the housing side tapered surface of the insulating shell. The shell-side tapered surface is formed on both side plates of the ground shell, and the housing-side tapered surface is formed on pressure receiving protrusions protruding from both sides of the housing body to both sides, so that the insulating housing is formed by the tapered surfaces on both sides thereof. It is guided and reliably pushed up toward the inner top surface of the shell body.

Since the shell-side tapered surface and the positioning surface are formed in the end plate portion protruding to the rear of the pair of side plates, it can be easily formed along with the formation of the side plates.

The coaxial connector of claim 3, wherein the pair of pressure receiving protrusions each have a guide portion provided vertically along an inner side surface of a corresponding end plate portion, and a leg portion of a signal terminal attached to the insulating housing, on the rear surface of the insulating housing, It is characterized in that it protruded from between the pressure receiving projections.

Since the pair of pressure receiving protrusions each have a guide along the inner surface of the end plate portion, the pair of pressure receiving protrusions are formed in the shape of hooks in cross-sections facing outward from each other. As the insulated housing is inserted, the guide portion moves along the inner surface of the end plate portion, so that the pressure receiving protrusion does not come out from above the end plate portion.

Moreover, since the leg of a terminal protrudes between a pair of pressure receiving protrusions, even if the conductor of the insulation housing receives a pressure receiving protrusion between the leg of the terminal and the end plate part, even if another conductor incorrectly approaches therebetween, There is nothing to be done.

The coaxial connector according to the invention of claim 4 is provided with a switch terminal in contact with or falling from the signal terminal in conjunction with the insertion and withdrawal of the plug pin in the insulating housing, and the leg portion of the signal terminal and the leg portion of the switch terminal at the attachment position. It is characterized in that the protruding from the rear surface of the insulating housing to align on the same surface as the bottom of the ground shell.

Since the legs of the plurality of terminals are aligned with the bottom surface of the ground shell to protrude, the legs and the ground shell of each terminal can be soldered in close contact with the pattern of the surface of the printed wiring board. Since the insulating housing and the ground shell are fixed to each other so that there is no relative movement, only a part of the soldered part is touched so that no pattern peeling occurs.

Hereinafter, the coaxial connector 1 according to an embodiment of the present invention will be described with reference to FIGS. 1 to 8 with the front side of the coaxial connector 1 as the front side and the rear side as the rear side. 1 is a perspective view of the coaxial connector 1 obliquely from the back, FIG. 2 is a perspective view of the coaxial connector 1 from the front, and FIGS. 3 to 5 show the insulating housing 3 attached to the ground shell 2. Side view showing the process, Figure 6 is a rear view of the coaxial connector 1, Figure 7 is a side view showing a state connected to the coaxial plug 120, Figure 8 is a perspective view seen from the bottom side of the insulating housing (3).

As shown in these figures, the coaxial connector 1 according to the present embodiment includes an insulating housing 3, a signal terminal 4 and a switch terminal 5 attached to the insulating housing 3, and an insulating housing 3. It consists of a ground shell (2) attached to the periphery.

The insulating housing 3 is integrally protruded toward the front from the housing body 31 having a substantially rectangular parallelepiped shape formed of an insulating material made of synthetic resin such as PBT and nylon, and a part of the front surface 31a (see FIG. 2). It consists of a cylindrical sleeve 32 provided.

The plug insertion hole 6 penetrating along the axial direction of the cylindrical sleeve 32 inserts a plug pin (not shown) of the coaxial plug 120 from the front side (left side in FIG. 7). It penetrates until it reaches back surface 31b.

As shown in Fig. 6, the contact receiving grooves 33 for pressing and holding the switch terminal 5 and the signal terminal 4 respectively from the rear side on both left and right sides with the plug insertion hole 6 in the rear surface 31b interposed therebetween. 34 is provided concave.

On both lower sides of the rear surface 31b of the housing body 31, again, a pair of pressure receiving protrusions 7 are continuously provided to protrude laterally from the rear surface. The whole of the pressure receiving protrusions 7 is formed in the shape of a hook when viewed from the rear by the guides 7a being vertically provided inside each.

The pressure receiving protrusions 7 slide on the positioning surface 8a of the end plate portion 8, which will be described later, and the bottom surface thereof is the pressure receiving surface 7b facing the positioning surface 8a. The front side of the pressure receiving surface 7b is continuous to the housing side taper surface 7c in which the front direction inclines upward so that it may be caught by the front surface of the pressure receiving protrusion 7.

On both sides of the housing main body 31, the engaging projections 10 protrude, and the hole in the corresponding portion of the ground shell (2) to be caught in the window holes (9) provided, thereby the entire insulating housing (3) Do not fall backwards.

The signal terminal 4 and the switch terminal 5 are plate spring pieces each formed by bending a conductive plate by means of a press, and are accommodated in the contact receiving grooves 34 and 33 so that the insulating housing is almost parallel to each other. Attached to (3). In the attached state, the front end of the signal terminal 4 is a signal contact portion 4a which is elastically in contact with the plug pin inserted into the plug insertion hole 6 in response to the plug insertion hole 6. On the other hand, the front of the switch terminal 5, although not shown, is bent to the side of the signal terminal 4 so as to be in contact with the signal terminal 4 elastically deformed by the insertion and withdrawal of the plug pin, and usually the signal The terminal 4 is elastically contacted. Thereby, the coaxial connector 1 is equipped with the switch circuit which switches by inserting and removing a plug pin.

In addition, each rear end of the signal terminal 4 and the switch terminal 5 includes a signal leg 4b and a switch leg 5a which are bent in parallel with the bottom surface of the housing main body 31.

In the ground shell 2, the shell body 21 covering the housing body 31 and the cylindrical shell 22 covering the cylindrical sleeve 32 are integrally formed of a conductive metal plate. The shell body 21 is formed in a door shape as seen from the rear by a pair of side plates 21A covering both sides of the housing body 31 and a flat plate 21B covering the plane, and the side plates 21A. The above-described window holes 9 are formed in the center of the hole.

A part of the lower part of each side plate 21A becomes the end plate part 8 which protrudes back, and the whole lower part of each side plate 21A including the end plate part 8 is the horizontal leg part bent horizontally outward ( 2a). The plane of the end plate part 8 becomes the horizontal positioning surface 8a, and the back side continues to the shell side taper surface 8b which is caught by the rear end of the end plate part 8, and inclined downward toward the back side. .

As will be described later, the distance between the positioning surface 8a of the shell body 21 and the inner top surface of the flat plate 21B is formed to be almost equal to the height from the pressure receiving surface 7b of the housing body 31. In the attachment position where the insulating housing 3 is completely inserted into the ground shell 2, the portion of the housing main body 31 is sandwiched between the positioning surface 8a and the flat plate 21B so that it is kept unshakable.

The cylindrical shell 22 is provided to lead to the front end of the flat plate 21B, and has a cylindrical shape that is bent into a large cylindrical shape fitted to the outside of the cylindrical sleeve 32. As shown in FIG. 7, when the coaxial plug 120 is connected, the cylindrical shell 22 is inserted into the cylindrical ground terminal 121 of the coaxial plug 120 so as to be in elastic contact.

Assembling the coaxial connector 1 first attaches the signal terminal 4 and the switch terminal 5 to the contact receiving grooves 33 and 34 of the insulating housing 3 from the rear, and then attaches them. The ground shell 2 is attached to the insulating housing 3 by the following steps, but their order of attachment is arbitrary.

The insulating housing 3 with the terminals 4 and 5 attached thereto, as shown in FIG. 3, inserts the cylindrical sleeve 32 from the rear of the cylindrical shell 22 and the whole of the insulating housing 3 forward. Push in.

Moving the insulating housing 3 forward in the ground shell 2, the locking projections 10 advance into the window holes 9, as shown in Fig. 4, and the housing of the pressure receiving projection 7 back and forth with it. The side tapered surface 7c abuts on the shell side tapered surface 8b of the end plate portion 8. Each of the tapered surfaces 7c and 8b is an inclined surface that is inclined downward toward the rear side, and after contacting, the insulating housing 3 is pressed upward by moving forward.

When the insulating housing 3 is moved further forward, the pressure receiving surface 7b and the positioning surface 8a continuous to each of the tapered surfaces 7c and 8b face each other and are superimposed and moved. In this movement, the guide portion 7a provided vertically from the pressure receiving protrusion 7 moves parallel to the inner side surface of the end plate portion 8, and is superimposed on the end plate portion 8 of the pressure receiving protrusion 7 to move. Guide your luggage.

In addition, the guide portion 7a may be provided vertically on the outside of the pressure receiving protrusions 7 so as to move along the outer surface of the end plate portion 8. In the case of being provided vertically on the outside, the locking protrusion 10 is pushed to widen the side plate 21A of the shell body 21 before the locking protrusion 10 is inserted into the window hole 9 by the movement. At the same time, the wide open end plate portion 8 abuts against the outer guide portion 7a so that the pressure receiving protrusion 7 does not fall off from the end plate portion 8.

When the insulating housing is pressed in to the attachment position shown in FIG. 5, the distance between the positioning surface 8a of the shell body 21 and the plate 21B is equal to the height from the pressure receiving surface 7b of the housing body 31. Since it becomes almost equal, the housing main body 31 part is sandwiched between the positioning surface 8a and the flat plate 21B, and is fixed without shaking.

In this attaching position, the engaging projections 10 are fitted in the window holes 9 and caught on their inner edges, and the insulating housing 3 does not fall back. In addition, the outer circumferential surface of the cylindrical sleeve 32 is completely covered with the cylindrical shell 22, and the rear end surface of the cylindrical shell 22 abuts against the front surface 31a of the housing main body 31, so that the insulating housing 3 Movement forward) is regulated.

In the mounting position, the signal terminals 4 and the foot portions 4a and 5a of the switch terminal 5 attached to the insulating housing 3 are arranged on the same plane as the ground leg 2a and printed wiring It is soldered to the corresponding pattern of the substrate 110. At this time, since the insulating housing 3 is fixed in the ground shell 2 without shaking, there is no shift in the relative position between each leg portion 4a, 5a and the ground leg portion 2a, and thus on the printed wiring board 110. When surface-mounting, each leg part can be reliably soldered.

In addition, since the insulating pressure receiving protrusions 7 are interposed between the leg portions 4a and 5a and the ground leg portion 2a, a short circuit does not occur even if an electrically conductive material approaches by chance. .

When the coaxial plug 120 is connected to the coaxial connector 1 configured as described above, the plug pin inserted into the plug insertion hole 6 is electrically connected to the signal terminal 4, and the tubular ground terminal 121 is connected to the coaxial connector 120. It is electrically connected to the ground shell 2. In addition, the connection between the signal terminal 4 and the switch terminal 5 is interrupted.

In the connection of the coaxial plug, even when the plug pin is inserted obliquely, the insulating housing 3 does not shake, so that the external force is not transmitted to the soldered portion of the signal leg 4a, and connection failure such as pattern peeling does not occur.

In this embodiment, the positioning surface 8a is formed behind the shell body 21. However, if the insulating housing 3 is sandwiched between the inner top surface of the flat plate 21B, You may form inward.

In addition, although the positioning surface 8a and the pressure receiving surface 7b opposite to each other are formed on the left and right sides of the ground shell 2 and the insulating housing 3, if the insulating housing 3 is pushed up without inclination, You may form in one position.

The pressure receiving protrusion protruding laterally may be in contact with the rear end surface of the side plate so as not to be released to the front at the attachment position of the insulating housing 3.

Moreover, the sleeve 32 in which the plug insertion hole 6 was formed does not necessarily need to be a cylinder, but may be cone-shaped.

The tapered surfaces 7c and 8c may be provided only on either the ground shell 2 side or the insulating housing 3 side.

As described above, according to the invention according to claim 1, it is possible to attach by simply pushing the insulating housing from the rear side without bending the ground shell.

In addition, since the insulating housing can be fixed in the ground shell without any shaking, the leg portion of the terminal and the leg portion of the ground shell can be supported in parallel with the plane of the printed wiring board, and soldered to the pattern on the corresponding printed wiring board. .

In addition, since the insulating housing can be fixed to the printed wiring board integrally with the ground shell, only the soldered part of the terminal is not shaken by external force such as a plug pin, and the soldered part such as pattern peeling is adversely affected. There is no

In addition, according to the invention of claim 2, the insulating housing superimposes the planes of the left and right pairs of end plates so that it can be pushed up in the direction of the inner top surface of the shell body without being inclined from side to side. Therefore, even if there is an uneven surface on the outer side of the insulating housing, it does not inadvertently come into contact with the ground shell, so that it can be pushed in smoothly.

The shell-side tapered surface and the positioning surface are formed at the end plate portion protruding to the rear of the pair of side plates, and thus can be formed at the same time when the side plate is punched out.

Moreover, according to invention of Claim 3, in addition, since a guide part moves along the inner surface of an end plate part, it does not happen that a pressure receiving protrusion falls out above an end plate part.

Moreover, since the pressure receiving protrusion of the insulated housing is interposed between the leg part and the end plate part of a terminal, even if another conductor approaches therebetween, it does not short-circuit.

In addition, according to the invention of claim 4, in addition, it is possible to form a switch circuit for switching by a connection with a coaxial plug in a coaxial connector. Even if it protrudes, since the state of being aligned with the bottom surface of the grounding shell is maintained, respectively, the legs of each terminal and the grounding shell can be soldered closely to the pattern of the surface of the printed wiring board.

Claims (4)

It is attached to the insulating housing (3) and the insulating housing (3) provided so that the cylindrical sleeve (32) integrally protrudes forward from a part of the front surface (31a) of the housing body (31), the cylindrical sleeve (32) The tubular shell 22 is integrated integrally from the signal terminal 4 in contact with the plug pin of the coaxial plug 120 to be inserted and the shell body 21 covering at least the side surface and the plane of the housing body 31. In the coaxial connector having a grounding shell (2) formed, and attaching the grounding shell (2) to the insulating housing (3) in the attachment position in which the tubular sleeve (32) is inserted from the rear of the tubular shell (22) , Insulation housing (3) inserted forward to the attachment position with respect to the ground shell (2), the fall prevention mechanism (9, 10) to prevent the back from falling, the corresponding portion of the insulating housing (3) and ground shell (2) In addition to, At the attachment position, the ground shell 2 abuts against the pressure receiving surface 7b of the insulating housing 3 and sandwiches the insulating housing 3 between the inner upper surface of the shell body 21. The positioning surface 8a is formed, A coaxial connector characterized in that a tapered surface (7c, 8b) inclined downward toward the rear is continuously formed on at least one of the rear of the positioning surface (8a) or the front of the pressure receiving surface (7b). 2. The pair of side plates 21A of the shell body 21 covering the lateral side of the housing body 31 each have an end plate portion 8 protruding rearward from a portion below the end plate. The plane of the part 8 is made into the positioning surface 8a and the shell side taper surface 8b behind it, The insulating housing 3 has a pair of pressure receiving protrusions 7 protruding from both sides of the housing body 31 to both sides. The insulating housing 3 has a pressure receiving surface 7b and a bottom surface of the pressure receiving protrusion 7. It is set as the front housing side taper surface 7c, A coaxial connector, characterized in that the pressure receiving protrusion (7) is superimposed on the side plate (21A) to insert the insulating housing (3) to the attachment position with respect to the ground shell (2). 3. The pair of pressure receiving protrusions (7) according to claim 2, each having a guide (7a) provided longitudinally along the inner side of the corresponding end plate (8), The leg portion 4b of the signal terminal 4 attached to the insulating housing 3 is projected from the rear surface 31b of the insulating housing 3 between a pair of pressure receiving protrusions 7. Coaxial connector. A switch terminal (5) according to any one of claims 1 to 3, wherein an insulating housing (3) is provided with a switch terminal (5) contacting or falling off the signal terminal (4) in conjunction with insertion and withdrawal of a plug pin, The rear part of the insulating housing 3 is aligned with the leg 4b of the signal terminal 4 and the leg 5a of the switch terminal 5 on the same surface as the bottom of the ground shell 2 at the attachment position. 31b) coaxial connector, characterized in that protruding from.