JP4541431B2 - Coaxial connector with switch - Google Patents

Description

  The present invention relates to a connector built in a small electronic device such as a cellular phone, and relates to a coaxial connector with a switch that improves isolation performance at the time of switch-on while further reducing size and height.

As a conventional coaxial connector 10 with a switch, those shown in FIGS. 7 and 8 are known (Patent Documents 1 and 2).
In these drawings, the coaxial connector with switch 10 has a very small diameter of about 2 mm, and includes a housing 13 made of an insulating material, a shell 14 made of a conductive metal, a normally closed terminal 15 and a common terminal 16. ing.
The upper half of the housing 13 is a cylindrical portion 17, and a pin insertion hole 17 a is formed in the center. In addition, one terminal support protrusion 18 and the other terminal support protrusion 20 protrude outwardly at intervals of 180 degrees on the lower half of the housing 13, and anti-rotation protrusions 22 protrude at two positions orthogonal to these. And are integrally formed.
The shell 14 is a cylindrical portion 23 whose upper half is fitted to the cylindrical portion 17, and a ground terminal portion 25 is integrally formed across the terminal support protrusion 18 and the terminal support protrusion 20 in the lower half. The anti-rotation locking portion 26 between the ground terminal portions 25 is locked to the anti-rotation protrusion 22.

The normally closed terminal 15 is formed by bending one end of a contact portion 27 having a pin relief hole 30 into a crank shape, both sides being press-fit support projecting pieces 29, and a central portion having a lateral U-shaped connection terminal portion 28 and It has become. Further, a relief hole 38 is formed in the vertical portion so that the tip of the spring portion 32 of the common terminal 16 does not contact.
The common terminal 16 is bent in a lateral U-shape from the contact piece 31 to the spring portion 32, and the tip of the spring portion 32 protrudes so as to loosely fit into the escape hole 38 of the common terminal 16. The tip of the upper end portion of the common terminal 16 constitutes a contact piece 31 that contacts and separates from the lower surface of the contact portion 27 of the common terminal 16. Further, both side portions continuing to the spring portion 32 are press-fit support protrusions 33, and the central portion is a laterally U-shaped connection terminal portion 34.

  In the above configuration, the press-fit support protrusion 29 of the normally closed terminal 15 is press-fitted into the terminal press-fit portion 19 of one terminal support protrusion 18, and the press-fit support protrusion 33 of the common terminal 16 is connected to the other terminal. Press-fit into the terminal press-fit portion 21 of the support protrusion 20. Then, the tip of the spring portion 32 of the common terminal 16 is folded and assembled while loosely fitting into the escape hole 38 of the normally closed terminal 15. When the shell 14 is put on the cylindrical portion 17 of the housing 13, the anti-rotation locking portion 26 is engaged and fixed to both side portions of the anti-rotation projection 22.

The coaxial connector 10 with the switch thus assembled is electrically fixed to the wiring pattern on the printed circuit board 12 with the ground terminal portion 25, the connection terminal portion 28, and the connection terminal portion 34 being electrically connected thereto. Is done.
When the probe 11 is inserted into the coaxial connector 10 with switch, the contact pin 35 of the probe 11 is inserted into the pin insertion hole 17a, and the pressing portion 39 of the common terminal 16 is pushed down like a chain line. The connection is released away from the contact portion 27 of the normally closed terminal 15. The probe 11 is kept connected in a state where the bulging portion 37 of the probe 11 is locked in the locking groove 24 of the shell 14.
Japanese Patent Laid-Open No. 11-307188 Design Registration No. 1234214

The conventional switch-equipped coaxial connector 10 has the following problems.
(1) Since the spring portion 32 of the common terminal 16 has a U-shaped sideways, the distance from the pressing portion 39 to the bottom of the spring portion 32 is increased, and the back as the connector 10 with the switch is increased accordingly and the size is reduced. Has been disturbed.
(2) Since the distance between the spring portion 32 of the common terminal 16 and the contact portion 30 is short, it is necessary to increase the stroke of the contact pin 35, and as in (1), the downsizing is hindered.
(3) Since the tip of the spring portion 32 of the common terminal 16 is folded and assembled while loosely fitting into the escape hole 38 of the normally closed terminal 15, the tip of the spring portion 32 of the common terminal 16 and the escape hole 38 of the normally closed terminal 15 are incorporated. Are close to each other and high insulation cannot be obtained.
(4) Since the position of the pin insertion hole 17a into which the contact pin 35 of the probe 11 is inserted is close to the position where the contact portion 27 and the contact piece 31 come in contact with each other, a mechanism for preventing intrusion of dust from the pin insertion hole 17a is adopted. Hateful.
(5) Since the contact part 27 of the normally closed terminal 15, the contact part 31 of the common terminal 16, the pressing part 39, and the spring part 32 are linearly arranged in the insertion direction of the contact pin 35 of the probe 11, the cylindrical part 17 There is a bias in the arrangement of the terminals in the interior of the housing, which hinders downsizing.

The purpose of the present invention is to arrange the terminals inside the cylindrical portion 17 without waste, to reduce the height and size, to eliminate the place where the normal close terminal and the common terminal approach each other, to obtain high insulation, The mechanism for preventing the intrusion of garbage is to make it easy to adopt.

  The coaxial connector with a switch according to claim 1 according to the present invention is provided by attaching at least two terminals made of a conductive material to the inside of a housing made of an insulating material, covering the outside with a shell, and inserting and removing the contact pin. In the coaxial connector with a switch that opens and closes between the terminals, the one terminal is press-fitted into the housing from one side, and a vertical part extending from the press-fitted part and a horizontal contact piece at the upper end constitute an inverted L shape. The other terminal is press-fitted into the housing from the other side, and the horizontal pressing portion at the end of the downward U-shaped spring portion extending from the press-fitting portion and a part of the side of the pressing portion are perpendicular to each other. And the contact piece of the one terminal and the contact piece of the other terminal are arranged so as to contact and separate in a substantially quadrangular state between the inverted L shape and the L shape. It is characterized by .

Switch coaxial connector with a second aspect of the invention, the housing, without the upper half of the circular cylinder portion, on the detent protrusion lower half out collision in the longitudinal and terminal support projections issued collision to the left and right None yo are four rectangular, bored pin insertion hole through the center of the upper end of the cylindrical portion, to form a contact piece moving groove and movable cavity portion communicating with the bottom of the pin insertion hole, the right and left A terminal press-fitting groove for press-fitting one normally closed terminal is drilled in the horizontal direction in the terminal support protrusion, and the terminal press-fitting groove for press-fitting the other common terminal is formed in the contact piece moving groove. It is characterized by being drilled in the horizontal direction in communication with.

According to a third aspect of the present invention, there is provided a coaxial connector with a switch that shields a gap between a movable gap for moving the other common terminal and a terminal press-fitting groove of one normally closed terminal by a shielding wall. The contact piece moving groove for contacting and separating the contact piece of the normally closed terminal and the contact piece of the common terminal is formed in a side portion of the part.

  The coaxial connector with a switch according to claim 4 according to the present invention is characterized in that one normally closed terminal has a horizontal press-fitted portion that is press-fitted into the terminal press-fitting groove, and a horizontal side of the upper end passing through the vertical portion from the press-fitted portion. The contact portion constitutes a contact piece, the central portion of the press-fit portion is bent in a lateral U shape to form a connection terminal portion, and the other common terminal has a horizontal press-fit portion that is press-fitted into the terminal press-fit groove. A spring part is formed by rising from this press-fitting part and bending downward U-shaped, and a horizontal part at the end of this spring part is used as a pressing part, and a part of the side of this pressing part is bent at a right angle. And a contact piece, and a central portion of the press-fitting portion is bent in a lateral U shape to form a connection terminal portion.

  According to the first aspect of the present invention, at least two terminals made of a conductive material and contacting and separating from each other are attached to the inside of the housing made of an insulating material. In the coaxial connector with a switch, the one terminal is press-fitted into the housing from one side, and a vertical portion extending from the press-fitted portion and a horizontal contact piece at the upper end constitute an inverted L shape, and the other terminal The terminal is press-fitted into the housing from the other side, and a horizontal pressing portion at the end of the downward U-shaped spring portion extending from the pressing portion and a part of the side of the pressing portion are bent at a right angle. The contact piece is configured in an L shape, and the contact piece of the one terminal and the contact piece of the other terminal are arranged so as to contact and separate in a substantially quadrangular state between the inverted L shape and the L shape. Compared with the conventional stroke It can be significantly shortened, the height of the connector as a connector can be lowered, the distance between the pressing part connected to the spring part of the common terminal and the contact piece can be increased, the stroke of the contact pin can be reduced, and the inside of the cylindrical part There is no waste in the arrangement of the terminals, and the coaxial connector with switch can be greatly reduced in size.

According to the second aspect of the present invention, the housing upper half a circle cylindrical portion, quadrangle Ri by the the detent projections which issued collision in the longitudinal and terminal support projections lower half issued collision to the left and right A pin insertion hole that penetrates from the center upper end of the cylindrical portion, communicates with a lower portion of the pin insertion hole to form a movable gap portion and a contact piece moving groove, and the left and right terminal support protrusions. The terminal press-fitting groove for press-fitting one normally closed terminal is drilled in the horizontal direction in communication with the movable gap, and the terminal press-fitting groove for press-fitting the other common terminal is communicated with the contact piece moving groove. Since the holes are formed in the horizontal direction, the portions other than the contact pieces between the other common terminal and the one normally closed terminal are reliably separated, and high insulation is obtained.

  According to the invention of claim 3, the shielding wall portion shields the gap between the movable gap for moving the other common terminal and the terminal press-fitting groove of the one normally closed terminal, and the side of the shielding wall portion. Since the contact piece moving groove for contacting and separating the contact piece of the normally closed terminal and the contact piece of the common terminal is formed in the portion, it is possible to prevent dust from entering from the pin insertion hole at the shielding wall portion.

  According to the invention described in claim 4, one of the normally closed terminals has a horizontal press-fitting portion that is press-fitted into the terminal press-fitting groove, and the horizontal side portion at the upper end passing through the vertical portion from the press-fitting portion is a contact piece. The center portion of the press-fit portion is bent in a lateral U shape to form a connection terminal portion, and the other common terminal has a horizontal press-fit portion that is press-fit into the terminal press-fit groove. The spring part is formed by bending up and curving downward U-shaped, and the horizontal part at the end of the spring part is used as a pressing part, and a part of the side of the pressing part is bent at a right angle to form a contact piece. Since the central portion of the press-fit portion is bent in a lateral U shape to form the connection terminal portion, the workability of assembling each terminal is excellent.

  The coaxial connector with a switch according to the present invention has at least two terminals made of a conductive material that are in contact with and separated from each other, specifically a normally closed terminal and a common terminal inside a housing made of an insulating material, and covers the shell outside. In the coaxial connector with a switch that opens and closes between the terminals by inserting and removing a contact pin such as a probe, the one normally closed terminal is press-fitted into the housing from one side, and a vertical portion and an upper end extending from the press-fitted portion A horizontal contact piece is formed in an inverted L shape, and the other common terminal is press-fitted into the housing from the other side, and a horizontal pressing portion at an end of a downward U-shaped spring portion extending from the press-fitted portion. And a contact piece obtained by bending a part of the side of the pressing portion at a right angle into an L shape, and the contact piece of the one normally closed terminal and the other common end Contact piece is disposed toward and away from a substantially quadrilateral state and the inverted L-shaped and L-shaped.

The housing has a short rectangular shape with a terminal support protrusion projecting slightly to the left and right and a non-rotating protrusion projecting slightly to the front and rear, with the upper half forming a short cylindrical part, A pin insertion hole is formed by penetrating from the upper center of the pin, and a movable gap portion and a contact piece moving groove are formed in communication with the lower portion of the pin insertion hole. A terminal press-fitting groove for press-fitting a closed terminal is drilled in the horizontal direction communicating with the movable gap portion, and a terminal press-fitting groove for press-fitting the other common terminal is drilled in the horizontal direction communicating with the contact piece moving groove. .

  The space between the movable gap for moving the other common terminal and the terminal press-fitting groove of one normally closed terminal is shielded by a shielding wall, and the contact piece of the normally closed terminal is placed on the side of this shielding wall. The contact piece moving groove for contacting and separating the contact piece of the common terminal is formed.

  One normally closed terminal has a horizontal press-fitting part that is press-fitted into the terminal press-fitting groove, and a horizontal side part at the upper end passing through the vertical part from this press-fitting part constitutes a contact piece, and the central part of the press-fitting part Is bent horizontally into a U-shape to form a connection terminal portion, and the other common terminal has a horizontal press-fit portion that is press-fitted into the terminal press-fit groove, and rises from this press-fit portion and curves downward into a U-shape. The spring portion is configured, a horizontal portion at the end of the spring portion is used as a pressing portion, a part of the side of the pressing portion is bent at a right angle to form a contact piece, and the central portion of the press-fitting portion is horizontally oriented U The connecting terminal part is formed by bending into a letter shape.

A first embodiment of the present invention will be described with reference to FIGS.
The coaxial connector 9 with a switch according to the present invention is configured such that the upper half is cylindrical and the lower half is quadrangular, and is as short as possible as a whole, and is made of an insulating material such as a plastic material. A housing 40, a shell 41 formed by drawing a conductive metal plate, and at least two terminals formed by pressing a conductive metal plate, specifically, a normally closed terminal 15 and a common terminal 16 It is configured.

The housing 40 has a low-profile square portion with a lower cylindrical portion 44 in the upper half and a terminal support protrusion 46 with the lower half protruding slightly to the left and right and a rotation-preventing protrusion 47 protruding slightly in the front and rear. ing. A pin insertion hole 45 is formed through the center upper end of the cylindrical portion 44, and a movable gap portion 67 and a contact piece moving groove 50 are formed in communication with the lower portion of the pin insertion hole 45.
The left and right terminal support protrusions 46 are respectively provided with terminal press-fit grooves 48 for press-fitting the normally closed terminals 42 in the horizontal direction so as to communicate with the contact piece moving grooves 50, and for press-fitting the common terminals 43. A groove 49 communicates with the movable gap portion 67 and is formed in the horizontal direction.
A central portion between the movable gap portion 67 and the terminal press-fit groove 48 is shielded by a shielding wall portion 65. Further, the contact piece moving groove 50 is formed in a side portion of the shielding wall portion 65 to provide a space necessary for the contact piece 57 of the normally closed terminal 42 and the contact piece 62 of the common terminal 43 to contact and separate. Yes.

  The shell 41 has a cylindrical shape in which the upper half covers the housing 40 from above, and a housing fitting hole 51 is formed inside the cylindrical portion, and a locking groove 55 is formed around the entire outer periphery. Yes. In the lower half of the shell 41, a ground terminal portion 56 bent outwardly at an interval of 180 degrees is formed, and a rotation-preventing groove 53 and a locking portion 52 are formed between the ground terminal portions 56. Has been. After the ground terminal portion 56 and the locking portion 52 are assembled with the housing 40, they are bent vertically as shown in FIGS.

As shown in FIGS. 4 and 5, the normally closed terminal 42 has a horizontal press-fitting portion 59 that is press-fitted into the terminal press-fitting groove 48, and the horizontal side of the upper end passing through the vertical portion 54 from the press-fitting portion 59. The side portion constitutes the contact piece 57, and the central portion of the press-fit portion 59 is bent in a lateral U shape to constitute the connection terminal portion 58. 59a is a press-fit protrusion.
As shown in FIGS. 4 and 5, the common terminal 43 has a horizontal press-fit portion 60 that is press-fitted into the terminal press-fit groove 49. The common terminal 43 rises from the press-fit portion 60 and curves downwardly into a U-shape. The portion 61 is configured, the horizontal portion of the tip of the spring portion 61 is a pressing portion 68, a part of the side of the pressing portion 68 is raised at a right angle to form a contact piece 62, and the center of the press-fit portion 60 The portion is bent in a lateral U shape to constitute the connection terminal portion 63. 60a is a press-fit protrusion.

The assembly of each component configured as described above will be described.
As shown in FIG. 3, when the press-fit portion 59 of one normally closed terminal 42 is press-fitted into the terminal press-fit groove 48 of the housing 40, the contact piece 57 of the normal close terminal 42 is caused to face the contact piece moving groove 50, and The connection terminal portion 58 faces the lower surface of the housing 40 and is fixedly attached by a press-fit protrusion 59a.
When the press-fit portion 60 of the other common terminal 43 is press-fitted into the terminal press-fit groove 49 of the housing 40, the spring portion 61 of the common terminal 43 is loosely fitted in the movable gap portion 67, and the pressing portion 68 is the side surface of the shielding wall portion 65. The contact piece 62 is loosely fitted in the contact piece moving groove 50 to contact the contact piece 57 of the normally closed terminal 42 from the lower surface, and the connection terminal portion 63 is exposed to the lower surface of the housing 40. It is fixedly attached at the press-fitting protrusion 60a.

As described above, the contact piece 62 of the common terminal 43 and the contact piece 57 of the normal close terminal 42 are merely opposed to each other at the position of the contact piece moving groove 50, and the other portions of the normal close terminal 42 and the common terminal 43 are shielded wall portions 65. It is interrupted by.
Next, the cylindrical portion 44 of the housing 40 is fitted into the housing fitting hole 51 of the shell 41, and the rotation prevention projection 47 of the housing 40 is fitted into the rotation prevention groove 53 of the shell 41 (chain line state in FIG. 2). When the engaging portion 52 and the ground terminal portion 56 are folded inward after the fitting, the engaging portion 52 is folded into the lower surface of the rotation preventing projection 47 and the ground terminal portion 56 is folded into the lower surface of the terminal support projecting portion 46, respectively. Locked and fixed.

The coaxial connector 9 with the switch assembled as described above is connected to the connection terminal portion 58, the connection terminal portion 63, and the ground terminal portion 56 on the printed wiring pattern portion of the printed circuit board 12, and is electrically connected with solder or the like. It adheres mechanically.
When the contact pin 35 of the probe 11 is inserted into the pin insertion hole 45 of the switch-equipped coaxial connector 9, the contact pin 35 is guided from the pin insertion hole 45 to the wall surface of the shielding wall portion 65 to move the pressing portion 68 of the common terminal 43. In the gap 67, the contact piece 62 of the common terminal 43 in the contact piece moving groove 50 is separated from the contact piece 57 of the normal close terminal 42. Therefore, the normally closed terminal 42 is electrically opened, and the common terminal 43 is connected to the contact pin 35. Further, the shell 36 of the probe 11 contacts the shell 41 and is connected to the ground terminal portion 56. By the insertion of the probe 11, the bulging portion 37 of the shell 36 is locked in the locking groove 55 of the coaxial connector 9 with switch.

  When the probe 11 is pulled out from the coaxial connector 9 with switch, the bulging portion 37 of the probe 11 is detached from the locking groove 55 of the coaxial connector 9 with switch, and the contact pin 35 is removed from the pin insertion hole 45 to The pressing portion 68 is elastically restored by the action of the spring portion 61, and the contact piece 62 of the common terminal 43 comes into contact with the contact piece 57 of the normal close terminal 42 and returns to its original state.

In the above-described embodiment, the case where two normally closed terminals 42 and common terminals 43 are incorporated as terminals in the housing 40 has been described. However, at least two terminals may be used, and the number of terminals is not limited.
Further, the two terminals need not be limited to the normally closed terminal 42 and the common terminal 43.
Although the case where the measurement probe 11 is inserted into and removed from the coaxial connector 9 with a switch according to the present invention has been described, the present invention is not limited to this, and any two terminals can be opened and closed by inserting and removing the contact pins.

7 shows an embodiment of the coaxial connector with switch 9 according to the present invention, and is a longitudinal sectional view taken along line AA of FIG. 6 with a probe 11 inserted. FIG. It is a right view in FIG. FIG. 7 is a longitudinal sectional view taken along line B-B of FIG. 6 showing an embodiment of the coaxial connector with switch 9 according to the present invention. It is a disassembled perspective view which shows one Example of the coaxial connector 9 with a switch by this invention. It is a perspective view after the assembly of the normally closed terminal 42 and the common terminal 43 in the coaxial connector 9 with a switch by this invention. (A) is the CC sectional view taken on the line of FIG. 3, (b) is the DD sectional view taken on the line of FIG. It is a disassembled perspective view of each component of the conventional coaxial connector 10 with a switch. It is the longitudinal cross-sectional view of the state which inserted the probe 11 in the conventional coaxial connector 10 with a switch.

Explanation of symbols

DESCRIPTION OF SYMBOLS 9 ... Coaxial connector with a switch by this invention, 10 ... Conventional coaxial connector with a switch, 11 ... Probe, 12 ... Printed circuit board, 13 ... Housing, 14 ... Shell, 15 ... Normally closed terminal, 16 ... Common terminal, 17 ... Cylindrical , 18 ... terminal support protrusion, 19 ... terminal press-fitting part, 20 ... terminal support protrusion, 21 ... terminal press-fitting part, 22 ... detent protrusion, 23 ... cylindrical part, 24 ... locking groove, 25 ... ground terminal , 26 ... Detent locking part, 27 ... Contact part, 28 ... Connection terminal part, 29 ... Press-fit support protrusion, 30 ... Pin relief hole, 31 ... Contact piece, 32 ... Spring part, 33 ... Press-fit support protrusion , 34 ... connection terminal part, 35 ... contact pin, 36 ... shell, 37 ... bulge part, 40 ... housing, 41 ... shell, 42 ... normally closed terminal, 43 ... common terminal, 44 ... cylindrical part, 45 ... pin insertion , 46 ... Terminal support protrusion, 47 ... Non-rotating protrusion, 48 ... Terminal press-fitting groove, 49 ... Terminal press-fitting groove, 50 ... Contact piece moving groove, 51 ... Housing fitting hole, 52 ... Locking part, 53 ... Around Stop groove, 54 ... vertical portion, 55 ... locking groove, 56 ... ground terminal portion, 57 ... contact piece, 58 ... connection terminal portion, 59 ... press-fit portion, 59a ... press-fit projection, 60 ... press-fit portion, 60a ... press-fit Projection, 61 ... spring, 62 ... contact piece, 63 ... connection terminal, 65 ... shielding wall, 67 ... movable air gap, 68 ... pressing part.

Claims (4)

  In the coaxial connector with a switch, at least two terminals made of a conductive material and attached to and separated from each other are attached to the inside of the housing made of an insulating material, the shell is covered on the outside, and the terminals are opened and closed by inserting and removing the contact pins. The terminal is press-fitted into the housing from one side, and a vertical portion extending from the press-fitted portion and a horizontal contact piece at the upper end are formed in an inverted L shape, and the other terminal is inserted into the housing from the other side. It is press-fitted and configured in an L shape with a horizontal pressing part at the end of the downward U-shaped spring part extending from the press-fitting part, and a contact piece bent at a right angle on a part of the side of the pressing part, A coaxial connector with a switch, wherein the contact piece of the one terminal and the contact piece of the other terminal are arranged so as to contact and separate in a substantially quadrangular state between the inverted L shape and the L shape. The housing, the upper half a circle cylindrical portion, without the square Ri by the the detent projections lower half out collision in the longitudinal and terminal support projections issued collision to the left and right, center of the upper end of the cylindrical portion A pin insertion hole is drilled through to form a movable gap and a contact piece moving groove in communication with the lower portion of the pin insertion hole, and one normally closed terminal is press-fitted into the left and right terminal support protrusions. A terminal press-fitting groove that communicates with the movable gap portion is drilled in the horizontal direction, and a terminal press-fitting groove that press-fits the other common terminal is communicated with the contact piece moving groove and formed in the horizontal direction. The coaxial connector with a switch according to claim 1.   The space between the movable gap for moving the other common terminal and the terminal press-fitting groove of one normally closed terminal is shielded by a shielding wall, and the contact piece of the normally closed terminal is placed on the side of this shielding wall. The coaxial connector with a switch according to claim 2, wherein the contact piece moving groove for contacting and separating the contact piece of the common terminal is formed.   One normally closed terminal has a horizontal press-fitting part that is press-fitted into the terminal press-fitting groove, and a horizontal side part at the upper end passing through the vertical part from this press-fitting part constitutes a contact piece, and the central part of the press-fitting part Is bent horizontally into a U-shape to form a connection terminal portion, and the other common terminal has a horizontal press-fit portion that is press-fitted into the terminal press-fit groove, and rises from this press-fit portion and curves downward into a U-shape. The spring portion is configured, a horizontal portion at the end of the spring portion is used as a pressing portion, a part of the side of the pressing portion is bent at a right angle to form a contact piece, and the central portion of the press-fitting portion is horizontally oriented U The coaxial connector with a switch according to claim 1, wherein the connection terminal portion is formed by being bent into a letter shape.

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