JP2003234139A - Connector with shutter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connector with a shutter (4) wherein a torsion spring (5) to drive the shutter (4) can be assembled simply. <P>SOLUTION: A guide ear piece (41) which is guided by a guide groove (35) drilled and installed at both sides of an earth shell (3), and which is protruded from the guide groove (35) is formed at the shutter (4), and both sides of the torsion spring (5), whose intermediate part (5a) is made to be engaged with an engaging part (32) of the earth shell (3) is inserted through a coupling hole (42) of the guide ear piece (41). From the outer side of the earth shell (3), the torsion spring (5) can be mounted simply. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector provided with a shutter for covering and protecting a contact portion of a contact when the connector is not connected to the mating connector.

[0002]

2. Description of the Related Art In a connector in which contact portions of a plurality of contacts are provided on a connecting portion for electrically connecting to a mating connector, foreign matter comes into contact with the contact portion of the exposed contact in a non-connected state. There is a known connector that incorporates a shutter that covers the contact portion of the contact in a non-connected state in order to prevent such deformation and short circuit.

In the unconnected state, this shutter faces the opening of the insertion hole into which the mating connector is inserted and is provided so as to cover the contact part of the contact. When the mating connector is connected, this contact part is opened. In order to expose it, it has to be pushed by the mating connector and retracted from the opening, and it is incorporated into the connector so that it can move back and forth.

FIGS. 6 to 8 show a first conventional connector 100 having such a shutter as shown in FIGS. 9 and 10.
Shows a second conventional connector 200 disclosed in JP-A-9-69375.

In the first conventional connector 100, as shown in FIGS. 6 and 7, the shutter 101 is provided with a pair of coil springs (compression springs) 103 provided on the left and right sides of the insulating housing 102 in the width direction. The structure is such that it is urged to move in the direction (not shown). A plurality of contacts 104 are arranged on both sides of the insulating housing 102 at predetermined intervals, and a ground shell 105 with which a ground contact of a mating connector (not shown) comes into contact is provided on the insertion side of the mating connector. It is provided.

As shown in FIG. 7, the shutter 101 is formed in a tubular shape and has a contact portion 104 of a contact 104.
It is attached to the insulating housing 102 so as to cover a and to move back and forth along the insertion direction of the mating connector (vertical direction in the drawing). The pair of left and right coil springs 103
The shutter 101 is compressed between the insulating housing 102 and the shutter 101 in a state of being positioned by the boss 102a formed in the insulating housing 102, and urges the shutter 101 upward in the drawing. The shutter 101 is
It is covered with a shield plate 106 made of a metal plate.

In such a structure, it is necessary to prevent the shutter 101 from coming off against the biasing force of the coil spring 103 so that the shutter 101 does not come off when the mating connector is not connected. Therefore, as shown in FIG. 8, the locking step portions 105a are formed inside the left and right ends of the earth shell 105.
And a portion of the shield 106 integral with the shutter 101 that faces the locking step 105a is bent into an L shape to form a stopper step 107.
The shutter 101 is prevented from coming off by being brought into contact with a.

In this connector, with the coil spring 103 compressed, the shutter 101 is pushed from the tip side (upper side) of the earth shell 105 so as to cover the earth shell 105. Before pressing, the stopper step portion 107 is not formed on the shield plate 106 on the shutter 101 side, and after the shutter 101 has passed the locking step portion 105a, the shield plate 106 is bent into an L shape using a jig. The stopper step portion 107 is formed and the shutter 101 is assembled.

In the second conventional connector 200, as shown in FIGS. 9 and 10, the shutter 202 is biased toward the mating connector by a single torsion spring (torsion spring) 201.

The insulating housing 203 is a rear back plate 203c.
It is formed in a box-like shape surrounded by a pair of side plates 203d and has a U-shaped frame portion, and the front (right side in FIG. 9) is an opening 207 of an insertion hole into which a mating connector is inserted.

The shutter 202 has an outer shape that fits loosely in a box-shaped insulating housing 203, and is formed in an L-shaped cross section so as to cover a contact portion 204 of a contact arranged on the bottom surface of the insulating housing 203. There is. Shutter 202
Has a linear guide protrusion 205 in the center of the bottom surface thereof, and is provided between a pair of guide ribs 206, 206 formed on the facing surface of the insulating housing 203 along the insertion direction (front-back direction) of the mating connector. By being guided by the guide protrusions 205, the guide protrusions 205 can move forward and backward.

The torsion spring 201 includes arm portions 201b, 201 from both sides of a winding portion 201a wound in a circle.
c extends, and the winding portion 201a is connected to the insulating housing 20.
The rear back plate 2 of the insulating housing 203 and the projection 203b formed by fitting one arm portion 201b on the bottom surface of the insulating housing 203.
03c and the other arm part 201c
Is brought into contact with the rear end of the guide projection 205 of the shutter 202, thereby biasing the shutter 202 forward. The shutter 202, which is biased forward, has a side plate 203.
At the front end of d, it comes into contact with a retaining means such as a stopper portion (not shown) protruding toward the opening 207, and is positioned at the forward position where it covers the opening 207.

In this connector, the insulating housing 203
By inserting the mating connector from the front of the shutter, the shutter 202 is pushed by the mating connector and moves rearward (leftward). Due to this movement, the torsion spring 201 bends as shown by the broken line, and torque for returning the shutter 202 to the original position is accumulated. Therefore, when the mating connector is removed from the insulating housing 203, the shutter 2
02 returns to the advanced position and covers the contact portion 204 of the contact, so that it can be protected.

[0014]

However, in the first conventional connector 100, even if the mating connector is inserted obliquely with respect to the normal insertion direction and the position deviated from the center of the shutter 1 is pushed, A pair of coil springs 103, 103 are arranged on the left and right in the width direction so that the coil spring 103 can be returned after the mating connector is pulled out while maintaining the posture, and to provide a space for arranging the pair of coil springs 103. In addition, the width of the insulating housing 102 is increased, the connector is increased in size, and the number of parts is increased, which causes a high cost.

Further, it is necessary to bend the shield plate 106 into an L-shape to form the stopper step portion 107 while keeping the coil spring 3 compressed, so that the workability of the assembly is extremely poor.

Further, since the stopper step portion 107 for preventing the shutter 101 from coming off is bent and formed, not only the stop position of the shutter 101 differs depending on the bending position, but also collision with the locking step portion 105a is repeated. As a result, there is a problem that the shutter 101 is gradually deformed and the stop position is changed.

Further, in the second conventional connector 200,
Since one torsion spring 201 is used and the shutter 202 is connected at one place on the rear end of the guide protrusion 205, when the shutter 202 is pushed in a direction biased with respect to the front-rear direction, the shutter 202 is properly operated. Is inclined with respect to the front-back direction, which is the forward / backward direction, and it becomes difficult to push it in. Also, when an attempt is made to release the push while returning to that state, the inclined shutter 202 opens the opening 2
There is a problem that the stopper portion formed in the vicinity of 07 gets over and comes out.

Therefore, the guide rib 206 is provided to guide the shutter 202 in the front-back direction without tilting the posture.
It is necessary to form the guide protrusion 205 and the structure is complicated.

Further, even with one torsion spring 201, one arm portion 201b is provided with an insulating housing 203.
The other arm portion 2 in a state of being fitted and compressed in the frame of
01c needs to be connected to the shutter 202 incorporated in the insulating housing 203 so as not to come off,
Assembly is a hassle.

The present invention has been made in consideration of the above-mentioned conventional problems, and the shutter can be easily moved back and forth in the insulating housing and can be easily incorporated without coming out, and the shutter is easy to assemble. It is intended to provide a connector.

Another object of the present invention is to provide a connector with a shutter in which a torsion spring for urging the shutter can be easily assembled.

It is another object of the present invention to provide a connector with a shutter that uses a single torsion spring to guide the shutter so that it can be moved back and forth without tilting.

[0023]

To achieve the above object, in a connector with a shutter according to the invention of claim 1, an insulating housing for disposing contact portions of a plurality of contacts on a connecting portion and a mating connector are inserted. A grounding shell having an insertion hole formed therein and attached to an insulating housing;
A shutter arranged between the connecting portion and the ground shell so as to be able to move forward and backward between the forward position facing the opening of the insertion hole and the retracted position exposing the contact portions of the plurality of contacts, A connector with a shutter that is equipped with a torsion spring that biases the shutter forward, and slides the shutter to the retracted position by the mating connector that is inserted into the insertion hole to bring the contact parts of multiple contacts into contact with the mating connector. The earth shell is
An engaging portion that projects outwardly at approximately the center in the width direction orthogonal to the front-rear direction, and a pair of guide grooves that are formed on both sides of the engaging portion in the width direction with the front-rear direction as the longitudinal direction. And the shutter is inserted into the pair of guide grooves,
A pair of guide ears that have a pair of guide ears that are guided in the forward and backward directions by the guide grooves, and that have both ends of the torsion spring that engages the middle shell with the engaging portion of the earth shell and project outward from the guide grooves. It is characterized in that a torsion spring for urging the shutter forward is attached from the outside of the earth shell by inserting it into the connecting hole of one piece, and the shutter guided forward and backward by the guide groove is retained. .

According to the first aspect of the present invention, the intermediate portion of the torsion spring is engaged with the engaging portion provided on the outer side of the earth shell, and both ends thereof are inserted into the connecting holes of the guide ear pieces protruding from the guide grooves. Then, the torsion spring that biases the shutter forward can be easily assembled from the outside of the ground shell.

Since the guide ear piece having one end of the torsion spring inserted through the connecting hole does not come out from the front end of the guide groove, the guide ear piece is prevented from coming off without providing any particular means for coming off the shutter.

Since the shutter is urged forward by both ends of one torsion spring, even when a pair of springs is arranged on the left and right in the width direction, even if a position deviated from the center is pushed, the pushing direction is increased. The one end of the torsion spring of works to reliably return the shutter to the forward position.

Further, since one end of the torsion spring that passes through the guide ear piece comes into contact with the periphery of the guide groove, the shutter smoothly moves forward and backward without largely inclining.

The connector with a shutter according to a second aspect of the invention is characterized in that the shutter is positioned at the forward position at a position where the guide ear piece comes into contact with the front end of the guide groove.

Since the front end of the guide groove is used for positioning the forward movement position of the shutter, the forward movement position of the shutter can be set accurately in mass production.

Even if the shutter repeatedly collides with the front end of the guide groove every time the mating connector is inserted / removed, its position does not change due to metal fatigue, etc. Therefore, the forward position of the shutter does not change, and the shutter does not move. There is no way out.

In the connector with shutter of the third aspect, the pair of guide grooves are formed on both side surfaces of the ground shells facing each other in the width direction so as to open rearward, and the guide earpiece is provided from the rear of the guide groove. It is possible to insert the shutter into the ground shell by inserting the shutter into the ground shell, and the insulating housing has a locking portion that covers the rear of the shutter built into the ground shell and locks the ground shell from the rear.

Since the insulating housing can be locked and integrated from the rear of the earth shell in a state in which the rear of the shutter incorporated in the earth shell is covered, the shutter can be guided to move back and forth. The shell, shutter, and insulating housing are assembled.

In the connector with a shutter according to a fourth aspect of the present invention, the torsion spring is a wire bent so as to have a symmetrical shape in the width direction with respect to the middle portion, and from the middle portion to the connecting hole of the pair of guide ear pieces. It is characterized in that the distances are substantially equal.

The torsion spring is formed symmetrically in the width direction from the middle part, and the distance to the connecting hole of the guide ear piece on which the torsion spring acts is equal on the left and right sides. , The elastic force of the torsion spring acts almost the same. Therefore, even if the position deviated from the center is pushed, the elastic force from the torsion spring is received at the positions of the two guide ear pieces, and the shutter can be reliably returned to the forward position.

[0035]

BEST MODE FOR CARRYING OUT THE INVENTION A connector 1 with a shutter according to an embodiment of the present invention will be described below with reference to FIGS. 1 to 5. 1 is an exploded perspective view of the entire connector 1, FIG.
Is a plan view of the connector 1, FIG. 3 is a front view thereof, and FIG.
The same side view and FIG. 5 are longitudinal sectional views showing the connector 1 and the mating connector 50 connected to the connector 1 in the unconnected state. In the connector 1, the front side into which the mating connector 50 is inserted is the front side, the back side is the rear side, and in the plan view of FIG. 2, the left side is the left side, the right side is the right side, the plane side is the upper side, and the bottom side is the lower side. explain.

The connector 1 with a shutter of this embodiment is a female connector which is connected to a mating connector 50 which is a male connector. As shown in FIG. 1, an insulating housing 2, an earth shell 3, a shutter 4 and a torsion spring 5 are provided. Is equipped with.

The insulating housing 2 integrally includes a flat plate-shaped contact arranging portion 21 which serves as a connecting portion with the mating connector 50 and a rectangular parallelepiped supporting portion 22 which horizontally supports the contact arranging portion 21 toward the front. And the side surface is formed in a substantially T shape by the insulating resin.

On both upper and lower surfaces of the contact arranging portion 21, a plurality of contact accommodating grooves 23 each having a concave groove shape in the front-rear direction are formed at a predetermined pitch in the width direction, as shown in FIG. A contact 27 is provided in each contact receiving groove 23.
The plurality of contacts 27 are attached by penetrating the support portion 22 while accommodating the contact portion 27 a of the above.

The connector 1 according to the present embodiment is mounted by mounting the back surface of the supporting portion 22 on a printed wiring board (not shown) and penetrating the supporting portion 22 and projecting to the rear. The leg portion 27b of the contact 27 is bent along the back surface of the support portion 22 and is soldered to the pattern of the printed wiring board arranged at the corresponding portion.

Bosses 24, 24 that fit into the mounting holes formed in the printed wiring board so that the leg portions 27b of each contact 27 are positioned on the pattern of the corresponding portion,
The support 22 is provided on both sides of the back surface so as to project.

The ground shell 3 is to be fitted and electrically connected from the outside of the cylindrical ground contact 52 of the mating connector 50. It is formed by punching out a conductive metal plate such as a copper alloy and bending it into a horizontally long rectangular tube. It was done. As shown in FIG. 1, in order to ensure contact with the ground contact 52, from the upper and lower surfaces of the ground shell 3, four contact pieces 3 are provided.
It is cut and raised so that 0 is inclined backward toward the inside.

On the upper and lower surfaces of the earth shell 3, 4
The locking piece 37 of the piece is cut and raised so as to incline inward toward the front. The locking piece 37 locks in the locking recess 25 formed in the supporting portion 22 of the insulating housing 2 to fix both the ground shell 3 and the insulating housing 2, and as will be described later, the shutter 4 By assembling the insulating housing 2 from the rear of the earth shell 3 containing the above, the locking piece 37 is locked in the locking recess 25,
Earth shell 3, shutter 4, insulating housing 2
And to assemble.

The positioning of the locking piece 37 and the locking recess 25 in the left-right direction is such that, when the insulating housing 2 is inserted from the rear side of the ground shell 3, the positioning recess cut out on both sides of the rear end of the ground shell 3. This is performed by fitting the positioning protrusions 26 protruding from both ends of the support portion 22 of the insulating housing 2 to the insulating protrusions 34.

The front end of the earth shell 3 has a mating connector 5
By forming the opening of the insertion hole 31 into which 0 is inserted and bending the periphery of the opening outward, the mating connector 5
It is guided so that 0 can be smoothly inserted into the insertion hole 31.

Further, on the upper surface 3a of the earth shell 3, the engaging hook 32 which is cut and raised upward and then bent forward and substantially rearward of the engaging hook 32 is formed in the approximate center in the width direction.
A wide holding piece 33 is formed by folding a rectangular piece at the rear end so as to be horizontal above the upper surface 3a. The engagement hook 32 is the intermediate portion 5 a of the torsion spring 5.
And acts as an engaging portion that restricts the rearward and upward movement of the intermediate portion 5a.
U-shaped bent portion 5 that is meanderingly bent behind
It acts so that b does not move upward.

Guide grooves 35, 35 are formed on the left and right side surfaces 3b, 3b of the earth shell 3 so as to guide the shutter 4 forward and backward. The guide groove 35 is a notch whose longitudinal direction is the inserting direction of the mating connector 50, that is, the advancing / retreating direction of the shutter 4, and the side surface 3b so that the guide ear piece 41 of the shutter 4 can be inserted from the rear side.
It is formed so that the rear side along 3b is open.

The guide groove 35 is formed by forming a long hole 36 inward of the punched piece forming the left and right side surfaces 3b of the earth shell 3 when the punched piece is punched from the metal plate. Is done by doing. That is, at the time of punching, the long hole 36 is in a non-open state in which the periphery is surrounded by the punching piece forming the side surface 3b.
After that, the rear end of the punched piece in which the long hole 36 is formed is
Together with the long hole 36, it is folded back in a U shape along the longitudinal direction. By this folding process, the rear side of the elongated hole 36 along the side surface 3b is opened, and the guide ear piece 41 of the shutter 4 can be inserted into the guide groove 35.

By being folded back in a U-shape, the rear surface of the punching piece facing rearward is flush with the rear surface of the support portion 22 when the insulating housing 2 and the earth shell 3 are integrally assembled. Then, it is possible to face the pattern of the printed wiring board on which the connector 1 is mounted together with the leg portion 27b of the contact 27 and solder it to the pattern.

On the other hand, the elongated holes 36 formed in front of the respective side surfaces 3b, 3b do not have to be folded back and serve as the guide grooves 35 as they are. The front end 35a of the guide groove 35 serves as a stopper with which the guide ear piece 41 of the shutter 4 that is biased forward abuts, thereby preventing the shutter 4 from slipping forward. When the guide ear piece 41 comes into contact with the stopper 35a, the shutter 4
Is in the forward movement position that is slid toward the frontmost, and the position of the front end 35a of the guide groove 35 is adjusted so that the shutter 4 faces the opening of the insertion hole 31 at the forward movement position.

When the mating connector 50 is not connected, the shutter 4 stands by at the forward position facing the opening of the insertion hole 31 and shuts off the contact portion 27a of the contact 27 arranged on the contact arrangement portion 21 from the outside. When the mating connector 50 is connected, the mating connector 50 is slid to the rearward retracted position so that the contact portion 27a of the contact 27 faces the mating connector 50. The shutter 4 is formed of an insulating resin so as to have a horizontally long tubular shape so that the contact disposition portion 21 is relatively inserted when the shutter 4 is retracted from the advanced position to the retracted position.

The guide ear piece 41 described above is the shutter 4
Are integrally formed on both side surfaces 4a in the left-right direction. The width between the both side surfaces 4a, 4a of the shutter 4 is equal to that of the earth shell 3
The width is slightly narrower than the width between the both side surfaces 3b, 3b of the guide ear piece 41 and is formed to be loosely fitted in the ground shell 3.
Is provided so as to project laterally from both side surfaces 4a, 4a in such a length that the guide groove 35 of the earth shell 3 is inserted therethrough. Guide ear piece 4
The vertical thickness of 1 is formed to be a length slightly shorter than the width of the guide groove 35, whereby the guide ears 41, 41 on both sides of the shutter 4 slide along the guide grooves 35, 35. It moves and is guided so as to be able to move back and forth in the longitudinal direction of the guide groove 35, that is, in the front-back direction.

In the guide ear piece 41, a connecting hole 42 for vertically connecting the hook portions 5c of both ends of the torsion spring 5 is inserted in the vertical direction. Since the hook portion 5c penetrates above and below the guide ear piece 41, the guide ear piece 41 does not drop inward from the guide groove 35.
Since the state of being always inserted through the guide groove 35 is maintained, even if the position deviated from the center is pushed in, the shutter 4 as a whole does not tilt with respect to the left-right direction, and the frictional force does not increase, so a light insertion force You can move forward and backward. Further, the guide ear piece 41 does not fall inward from the front end 35a of the guide groove 35 that constitutes the stopper, and the shutter 4 does not come out forward.

The torsion spring 5 is formed of a metal wire rod, and as shown in FIG. 1, an intermediate portion 5 extending linearly in the left and right directions.
Each side of a is bent so as to meander backward, and a pair of U-shaped bent portions 5b, 5b is formed behind the intermediate portion 5a, and the other side of the U-shaped bent portion 5b extends diagonally forward in the left-right direction. The tip of the extension portion is a hook portion 5c which is bent downward. As a result, the entire torsion spring 5 has a bilaterally symmetrical shape with respect to a straight line in the front-rear direction passing through the center of the intermediate portion 5c, and the hook portions 5c and 5c at both ends are forward of the intermediate portion 5a in an initial state where no external force is applied. Is formed so as to be located at.

In the assembly of the connector 1 with a shutter composed of these parts, first, the guide ear piece 41 is inserted from the rear of the guide groove 35 to incorporate the shutter 4 into the earth shell 3 and the assembled state. While inserting the contact arranging portion 21 into the cylindrical shutter 4, the positioning recess 34 at the rear end of the earth shell 3 is inserted.
Then, the positioning protrusion 26 of the insulating housing 2 is fitted to the insulating housing 2, and the insulating housing 2 is inserted from the rear of the ground shell 3. As a result, the locking piece 37 of the earth shell 3 is locked in the locking recess 25 of the insulating housing 2, and the shutter 4 is housed so as to be movable back and forth in the front-back direction.
The insulating housing 2 is integrally attached to the.

After that, the torsion spring 5 is attached from the outside of the earth shell 3 as shown in FIG. That is, the substantially central portion of the intermediate portion 5a is engaged with the engaging hook 32 formed on the upper surface 3a of the earth shell 3, and U
The bent portions 5b, 5b are arranged between the pressing piece 33 and the upper surface 3a, and the hook portions 5c, 5c at both ends are inserted into the connecting holes 42 of the guide ear pieces 41 from above and attached.

The torsion spring 5 whose rearward movement is restricted by engaging the intermediate portion 5a with the engaging hook 32 is obtained by inserting the hook portions 5c, 5c at both ends into the connecting hole 42 of the guide ear piece 41. , Is prestressed, and acts to bias the guide ear piece 41 forward. Further, the pressing piece 33 restricts the upward rotation of the torsion spring 5 around the intermediate portion 5a, and the hook portions 5c and 5c are connected to the connecting hole 42.
It keeps me from getting out.

Here, as shown in the figure, the tip of the hook portion 5c inserted through the connecting hole 42 is bent forward so that the hook portion 5c does not come off more reliably.

In the above-mentioned assembly process, the torsion spring 5 is attached inside the earth shell 3 or the insulating housing 2, the shutter 4 is attached in a state where the torsion spring 5 is compressed, and the retaining spring is processed. It is extremely easy to assemble because it does not exist.

In the unconnected state of the connector with shutter 1 waiting for connection with the mating connector 50, the guide ear piece 41 biased forward by the torsion spring 5 contacts the stopper 35a, and the shutter 4 is inserted. Since it is in the forward position facing the opening of the hole 31, the contact portion 27a of the contact 27 arranged on the contact arrangement portion 21 is shielded from the outside by the shutter 4 and protected from contact with foreign matter.

Further, when the mating connector 50 is inserted into the insertion hole 31 of the ground shell 3, the shutter 4 is pushed by the mating connector 50 and retracts to the retracted position, whereby the contact portion 27a of the contact 27 exposed is mated. Contact the signal contact 53 of the connector 50, and
And the mating connector 50 are electrically connected to each other.

When the shutter 4 is in the retracted position, the torsion spring 5 bends as shown by the broken line in FIG. 2, and when the mating connector 50 is pulled out forward from the insertion hole 31, both ends of the torsion spring 5 move to the left and right. The guide ears 41 are urged forward with almost the same restoring force, and the shutter 4 returns to the forward position where the guide ears 41 contact the stopper 35a.

When the shutter 4 returns, a substantially equal restoring force is applied to the guide ear pieces 41 at both ends of the shutter 4 from both ends of the one torsion spring 5, and the guide ear pieces 41.
Slides along the guide groove 35 and retreats, so that extra friction due to tilting of the shutter 4 does not occur, and the shutter 4 can be reliably returned. That is,
Even if the springs having substantially the same elastic force are not arranged on the left and right sides, it is possible to prevent the restoring force from acting on the position and the direction biased to the shutter 4 by one torsion spring 5, and the width direction of the connector 1 The size of the connector 1 can be reduced, the number of parts can be reduced, and the weight of the entire connector 1 can be reduced.

The forward position of the shutter 4 is determined by setting the position where the guide ear piece 41 contacts the stopper 35a at the front end of the punched guide groove 35 as the forward position.
The position can be set more accurately than a stopper formed by bending or the like, and the position does not change even if the guide ear piece 41 repeatedly contacts.

Further, in this embodiment, the non-open long hole 36 is formed at the stage of the flat punching piece forming the both side surfaces 3b, 3b of the earth shell 3 to form the guide groove 35. Therefore, while opening the rear of the guide groove 35,
Three-dimensionally, the circumference of the guide groove 35 is completely surrounded, and the entire side surface 3b can be maintained at a predetermined strength. Therefore, the width of the guide groove 35 does not change and the guide ear piece 41 does not slide, and the rear side of the side surface 3b is not deformed such that it is turned up.

Further, when the connector 1 is mounted on a printed wiring board, the portions of the rear ends of the both side surfaces 3b, 3b that are folded back in a U shape are soldered to a ground pattern or the like of the printed wiring board. Therefore, it is not necessary to separately form legs for soldering on the ground shell 3.

Since the folded-back portion to be soldered is U-shaped, the folded-back portion rising from the printed wiring board also contains solder, which not only increases the soldering strength partially but also the width of the connector 1. Since the soldering is performed at the positions on both sides in the direction, the mounting strength on the printed wiring board is also improved.

However, the present invention is not limited to the above-described embodiment, and the guide groove 35 is not formed based on the non-open long hole 36, but is punched into a notch which opens the rear side. May be.

Further, the stopper 35a at the front end of the guide groove 35
Although the position where the shutter 4 comes into contact with the shutter 4 is the forward position, the forward position may be determined by another method by providing a positioning protrusion or the like on the front edge housing.

The torsion spring 5 may have various shapes as long as the guide ears 41 are urged forward at both ends thereof, and the method of attaching the torsion spring 5 to the earth shell 3 is the same as in the above-described embodiment. Not as long as the. For example, the intermediate portion 5a of the torsion spring 5 may be wound around an engagement protrusion protruding from the ground shell 3 side, both ends may be extended to the left and right, and may be connected to the guide ear piece 41.

Further, the pair of guide grooves 35 need not necessarily be formed in both side surfaces 3b of the earth shell 3, but may be formed in the upper surface 3a on both sides in the width direction of the engaging portion 32. May be.

[0071]

According to the first aspect of the invention, the torsion spring can be easily assembled only by mounting it from the outside of the earth shell. Since no means for returning the shutter is provided in the ground shell, the entire structure can be downsized, and a torsion spring that does not occupy a large space such as a coil spring is used. Does not hinder mounting on a printed wiring board or mounting on a device.

Further, since the guide ear piece is inserted into the guide groove to incorporate the shutter into the earth shell and both ends of the torsion spring are inserted into the connecting holes of the guide ear piece, the shutter which can be moved back and forth can be incorporated. The assembly process is simplified.

Further, since one end of the torsion spring is inserted through the connecting hole of the guide ear piece protruding from the guide groove, the guide ear piece is guided without coming out of the guide groove.
It is possible to prevent the shutter from coming off without separately providing a means for preventing the shutter from coming off. For this reason, it is not necessary to form the stopper having the claws or the like cut and raised by bending after incorporating the shutter, which eliminates the processing step and simplifies the assembly step.

According to the invention of claim 2, in addition to the effect of the invention of claim 1, since the front end of the guide groove is used for positioning the forward position of the shutter, the stopper formed by bending the metal plate. Unlike the step, even if the mating connector is repeatedly inserted and removed, the position of the stopper does not change.

According to the invention of claim 3, in addition to these inventions, the guide ear piece is inserted into the guide groove to incorporate the shutter from the rear of the earth shell, and then the insulating housing from the rear of the earth shell. It is possible to easily assemble the earth shell, the shutter guided in the advancing and retracting directions by the guide groove, and the insulating housing by simply locking them.

Further, since the shutter and the insulating housing can be attached to the ground shell from the rear in the same direction, the assembly can be easily automated.

According to the invention of claim 4, in addition to the effects of these inventions, since the torsion spring urges the left and right sides of the shutter evenly, the shutter moves smoothly and is uniformly urged. Since only one torsion spring is used as the above, the space for disposing the torsion spring is reduced, and the connector can be downsized.

[0078]

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a connector with a shutter 1 according to an embodiment of the present invention.

FIG. 2 is a plan view of a connector 1 with a shutter.

FIG. 3 is a front view of the same.

FIG. 4 is a side view of the same.

FIG. 5: Connector 1 with shutter in unconnected state
3 is a vertical sectional view showing a mating connector 50 connected to the connector 1. FIG.

FIG. 6 is a plan view of a first conventional connector 100.

FIG. 7 is a vertical cross-sectional view of a first conventional connector 100.

FIG. 8 is an enlarged cross-sectional view of the main parts of FIG.

FIG. 9 is a plan view of a second conventional connector 200.

FIG. 10 is a partial perspective view of a second conventional connector 200.

[Explanation of symbols]

1 Connector with shutter 2 Insulation housing 21 Contact placement part (connection part) 25 Locking recess (locking part) 27 contacts 27a contact part 3 Earth shell 3b side 31 insertion hole 32 Engagement hook (engagement part) 35 guide groove 35a stopper 4 shutter 41 Guide Earpiece 42 communication hole 5 torsion spring 5a middle part 5c Hook part (both ends) 50 Mating connector

Claims (4)

[Claims] 1. A contact portion (2) of a plurality of contacts (27).
7a) is disposed on the connection part (21), and an insulating housing (2) and an insertion hole (31) into which the mating connector (50) is inserted are formed. 3) and the forward position facing the opening of the insertion hole (31) and the retracted position exposing the contact portions (27a) of the plurality of contacts (27), so that the connecting portion can move forward and backward. (2
1) A shutter (4) provided between the earth shell (3) and a torsion spring (5) for urging the shutter (4) forward, and the shutter (4) is inserted into the insertion hole (31). A connector with a shutter for sliding the shutter (4) to the retracted position by the mating connector (50) to bring the contact portions (27a) of the plurality of contacts (27) into contact (53) of the mating connector (50). The earth shell (3) has an engaging portion (32) projecting outward at approximately the center in the width direction orthogonal to the front-rear direction,
The engaging portion (32) has a pair of guide grooves (35) formed on both sides in the width direction, the longitudinal direction of which is the front-rear direction, and the shutter (4) is provided in each of the pair of guide grooves (35). It has a pair of guide ear pieces (41) which are inserted and guided in the forward / backward direction by the guide groove (35), and the middle portion (5a) is engaged with the engaging portion (32) of the earth shell (3).
Both ends (5c) of the torsion spring (5) engaged with
Insert the torsion spring (5), which is inserted into the connecting hole (42) of the pair of guide ear pieces (41) protruding outward from the guide groove (35) and biases the shutter (4) forward, to the earth shell (3). ) Is attached from the outside and the shutter (4) guided forward and backward by the guide groove (35) is prevented from coming off. 2. The shutter (4) at the position where the guide ear piece (41) abuts on the front end (35a) of the guide groove (35).
Is positioned in the forward position.
Connector with shutter described. 3. The pair of guide grooves (35) are formed on both side surfaces (3b) of the ground shells (3) facing each other in the width direction so as to open rearward, and the guide grooves (35).
The shutter (4) can be freely incorporated into the earth shell (3) by inserting the guide ear piece (41) from the rear of the, and the insulating housing (2) is the shutter (4) incorporated in the earth shell (3). The connector with a shutter according to claim 1 or 2, further comprising a locking portion (25) that covers the rear of the ground shell and locks the ground shell (3) from the rear. 4. The torsion spring (5) has an intermediate portion (5).
The wire rod is bent so as to have a symmetrical shape in the width direction around a), and the distance from the intermediate portion (5a) to the connecting hole (42) of the pair of guide ear pieces (41) is substantially equal. The connector with a shutter according to claim 1, wherein the connector has a shutter.