JP2005042428A - Latch with switch - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a latch with a switch, which can be inexpensively manufactured by enabling the inexpensive manufacture of a movable terminal. <P>SOLUTION: In this latch L, a movable member 41, which is urged by a coiled spring 61 to a protruding position to partially protrude from a housing 11, is pushed into the housing 11, so that a locking mechanism can be brought into a locked state, so that the movable member 41 can be locked in a pushed-in position, and so that the switch can be turned off; and the movable member 41 in the pushed-in position is pushed into the housing 11, so that the locking mechanism can be brought into an unlocked state, so that the movable member 41 can return to the protruding position, and so that the switch can be turned on. The switch comprises: a pin 81 which is attached to the movable member 41 and both the ends of which are protruded from two opposed side surfaces of the movable member 41; and a pair of fixed terminals 31 which are fixed into the housing 11, which are brought into a conducting state by being brought into contact with both the ends of the pin 81 when the movable member 41 is in the protruding position, and which are brought into a nonconducting state by being brought into noncontact with both the ends of the pin 81 when the movable member 41 is in the pushed-in position. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a switch-equipped latch in which a switch is provided in a latch that is attached to a member to be attached such as a main body in order to press and close an opening / closing member such as a door of a radio cassette and to open the closed opening / closing member again. It is.

  A conventional latch with a switch pushes and pushes a movable member urged by a urging member to a protruding position where a part protrudes from the housing into the housing against the urging force of the urging member. The lock mechanism of the type is locked to lock the movable member in the pushing position, and the switch is turned on, and the movable member at the pushing position is pushed into the housing against the urging force of the urging member. Is in an unlocked state, and the movable member is returned to the protruding position by the urging force of the urging member, and the switch is turned off.

The switch in the conventional switch-equipped latch includes a fixed terminal fixed to the housing, and a movable terminal having a brush-like elasticity that is in contact with and away from the fixed terminal and is in sliding contact with the fixed terminal. Has been.
Since this movable terminal is manufactured by cutting and bending a metal thin plate, it becomes expensive (high cost).
Therefore, the latch with switch becomes expensive.
Japanese Utility Model Laid-Open No. 7-14062 (paragraph [0007] to paragraph [0020], FIGS. 6 to 9)

  The present invention has been made to solve the above-described disadvantages, and provides a latch with a switch that can be manufactured at low cost because the movable terminal can be manufactured at low cost.

The present invention provides a push-push type lock by pushing a movable member urged by a urging member into a protruding position where a part protrudes from the housing into the housing against the urging force of the urging member. When the mechanism is locked and the movable member is locked in the pushing position, the switch is turned on or off, and the movable member at the pushing position is pushed into the housing against the urging force of the urging member. In the unlocked state, the movable member is returned to the projecting position by the urging force of the urging member, and the switch is attached to the movable member, and the both ends from the two side surfaces of the movable member. A movable terminal consisting of a pin with a protruding part and a fixed terminal in the housing, and both ends of the movable terminal are non-contact when the movable member is in the protruding position It is composed of a pair of fixed terminals that are in a non-conducting state or in contact to be in a conducting state, and that are in a conductive state or non-contact state when both ends of the movable terminal are in contact when the movable member is in the pushed position. It is what.
Then, the two side surfaces of the movable member are set as two opposite side surfaces, the movable terminal can be rotated with respect to the movable member, the sectional shape of the movable terminal is made circular, and the movable terminal is fixed to a pair of fixed members. It is desirable to be able to be incorporated into the notch of the fixed terminal from the housing opening side by bending the opening side portion of the terminal housing outward.
When the movable terminal can be incorporated into the notch portion of the fixed terminal from the opening side of the housing by bending the opening side portion of the housing of the pair of fixed terminals to the outside, on the inner side of the opening side of the housing, It is desirable to provide a recess that can bend the opening side portion of the housing of the pair of fixed terminals outward.

According to the present invention, the switch is attached to the movable member, the movable terminal is composed of a pin that protrudes from both side surfaces of the movable member, and the movable terminal is fixed in the housing and the movable terminal is in the projecting position. A pair in which both ends become non-contact and become non-conducting or contacted and become conductive, and both ends of the movable terminal come into contact and become non-conductive and non-conductive when the movable member is in the pushed position. Because the movable terminal is always urged by the urging member in the direction of protruding from the housing and contacts the fixed terminal in this urged state, the contact between the movable terminal and the fixed terminal is poor. Is less likely to occur and the reliability of the switch can be ensured.
Since the two side surfaces of the movable member are the two opposite side surfaces and the movable terminal is rotatable with respect to the movable member, the reliability of the switch can be improved by changing the portion of the movable terminal that contacts the pair of fixed terminals. Can be secured.
Furthermore, since the cross-sectional shape of the movable terminal is circular, the contact state between the fixed terminal and the movable terminal can be stabilized and the reliability of the switch can be ensured.
Furthermore, since the movable terminal can be assembled into the notch portion of the fixed terminal from the opening side of the housing by bending the opening side portion of the housing of the pair of fixed terminals outward, the assembly can be easily performed.
Then, when the movable terminal can be incorporated into the notch of the fixed terminal from the opening side of the housing by bending the opening side portion of the housing of the pair of fixed terminals to the outside, on the inside of the opening side of the housing, Since the recessed part which can bend the opening side part of the housing of a pair of fixed terminal outside is provided, the movable terminal can be incorporated without deforming the housing.

  The present invention achieves the object of manufacturing the movable terminal at low cost by using pins.

  1 is a perspective view of a switch-equipped latch according to a first embodiment of the present invention, and FIG. 2 is an exploded perspective view of the switch-equipped latch shown in FIG.

  In these drawings, L denotes a latch with a switch, a box-shaped housing 11 whose one side surface is open, a pair of fixed terminals 31 fixed in the housing 11, and a movable member 41 inserted into the housing 11. A coil spring 61 as a biasing member that is loaded between the movable member 41 and the housing 11 and biases the movable member 41 in a direction protruding from the housing 11, and a guide lever 71 mounted in the housing 11. The pin 81 is attached to the movable member 41 to prevent the movable member 41 from coming out of the housing 11 and to come in contact with and away from the fixed terminal 31 and has a pin 81 as a movable terminal having a circular cross-sectional shape. .

3 is a plan view of the housing shown in FIG. 2, FIG. 4 is a front view of the housing shown in FIG. 2, FIG. 5 is a right side view of the housing shown in FIG. 2, and FIG. FIG. 7 is a left side view, FIG. 7 is a sectional view taken along line AA in FIG. 5, and FIG. 8 is a sectional view taken along line BB in FIG.
In the following description, up, down, left, and right and front and back are assumed to be in front views of the respective members.

  In these figures, the housing 11 molded of synthetic resin has a front wall 12f, a back wall 12b, a ceiling wall 12u, a bottom wall 12d, and a left side wall 12l so that one end (right side: right side wall) is an opening. And a box portion 24 that is connected to the right side of the box portion 12, protrudes up and down from the box portion 12, and has a rectangular shape in a right side view as viewed from the right side and wider than the box portion 12. Yes.

The box portion 12 has an elasticity that extends from the left side wall 12l side to one end (frame portion 24) side near the frame portion 24 side of the front wall 12f and the back wall 12b, and clamps the attachment member with the frame portion 24. Each of the holding pieces 13 is provided, and the flat plate portion 50 of the movable member 41 is horizontally moved from the left side wall 121 to the one end (frame portion 24) side near the left side wall 121 side of the inner surface of the front wall 12f. The first and second cam ridges 14A and 14B extending in parallel with each other are provided, close to the back wall 12b side of the ceiling wall 12u and the bottom wall 12d, to the left side wall 12l side, and to the left side from one end (frame portion 24) side. Locking pieces 16 extending toward the surface wall 12l are provided.
The inner side of each locking piece 16 slightly protrudes into the box portion 12 while being inclined from one end (frame portion 24) side to the left side wall 12l side, and is engaged with the engaging hole 33a of the fixed terminal 31. A protrusion 16a is provided.

Further, the box portion 12 extends from the end of the inner surface connected to the left side wall 12l of the ceiling wall 12u to the upper end of the upper right side surface of the frame portion 24 and from the end of the inner surface continuous to the left side wall 12l of the bottom wall 12d to the right side of the frame portion 24. On the extension of the locking piece 16 reaching the lower end of the lower surface, terminal guide grooves 17 having a depth of the thickness of the fixed terminal 31 for guiding the fixed terminal 31 so as not to rattle are provided to face each other. An insertion hole connected to the terminal guide groove 17 that can be inserted on the extension of the locking piece 16 so as not to rattle the connection portion 32 of the fixed terminal 31 near the ceiling wall 12u and the bottom wall 12d on the inner surface of the left side wall 12l. 18 is provided, and a spring receiver 19 for positioning the coil spring 61 is located in the middle of the two locking pieces 16 on the inner surface of the left side wall 121 and is parallel to the ceiling wall 12u and the bottom wall 12d toward one end (frame portion 24). Set in It is.
An engagement portion 17 a that engages with the engagement recess 34 a of the fixed terminal 31 and prevents the right end portion of each fixed terminal 31 from moving on the right side surface portion of the frame portion 24 of each terminal guide groove 17. Each is provided.
And the recessed part 17b which bends the opening part side part of the housing 11 of the fixed terminal 31 outside, and lets the pin 81 pass inside is provided inside each terminal guide groove 17 on the opening part side of the housing 11.

Further, the box portion 12 is provided with a guide lever mounting portion 20 for mounting the guide lever 71.
The guide lever mounting portion 20 is connected to the insertion hole 21 provided in the left side wall 121 for inserting the guide lever 71, and the left side wall of the first and second cam protrusions 14A and 14B. On the 12l side, provided in a position far from the front wall 12f, are recessed portions 22A and 22B for rotatably positioning the shaft portion 72 of the guide lever 71, and the shaft portion 72 of the guide lever 71 is inserted into the recesses 22A and 22B. It is comprised with the elastic press piece 23 pressed so that rotation is possible.

In FIG. 2, reference numeral 31 denotes a fixed terminal formed by pressing a conductive metal plate. A connection portion 32 partially protrudes from the inside of the housing 11 to the outside of the housing 11, and the connection portion 32 extends to both sides. The protruding rectangular shape is connected to the right side in the same plane, is located in the terminal guide groove 17 of the housing 11, and is bent by the flat plate portion 33 to be connected to the right side, and is positioned on the opening side portion of the housing 11. And an engaging portion 34 positioned in the terminal guide groove 17 portion.
The connecting portion 32 is provided with an insertion hole 32a for inserting and connecting a conducting wire, and the flat plate portion 33 is engaged with the locking projection 16a of the housing 11 at the edge and having a retaining function. A rectangular engagement hole 33a as a part and a terminal hole 33b as a notch part where the pin 81 contacts and separates from the edge are provided, and the engagement part 17 engages with the engagement part 34. An engagement recess 34 is provided.
In addition, the terminal hole 33b is made into the shape where the isosceles triangle which the top part was rounded to the right side of a horizontally long rectangle continues.
The length of the right side of the rectangular terminal hole 33b is the same as the length of the base of the isosceles triangle.

  9 is a plan view of the movable member shown in FIG. 2, FIG. 10 is a front view of the movable member shown in FIG. 2, FIG. 11 is a right side view of the movable member shown in FIG. 2, and FIG. 13 is a left side view of the movable member, FIG. 13 is a bottom view of the movable member shown in FIG. 2, and 14 is a sectional view taken along the line CC of FIG.

  In these drawings, reference numeral 41 denotes a movable member formed of a synthetic resin. The main body 42 inserted into the housing 11 is opposed to the right end of the front surface and the right end of the back surface of the main body 42 via a hinge portion 55. It is provided with two sandwiching pieces 54 that are provided in series and sandwich a striker S, which will be described later, or release the sandwiched striker S.

The above-described main body 42 is located at the right end, is connected to the front wall portion 43 having a rectangular shape in right side view in which two clamping pieces 54 are continuously provided, and is connected to the front upper side of the left side surface of the front wall portion 43, and the back surface. The left side corner of the side is cut into a straight line to form an inclined surface (cam surface), and the guide projection 44 having a height lower than the upper end of the front wall portion 43 and the left rear side half of the front wall portion 43 are The front and rear walls of the rectangular column portion 45 provided on the left side with the upper and lower sides of the wall portion 43 and the left side of the front wall portion 43 are positioned in the middle of the square column portion 45 in the height direction. It comprises a flat plate portion 50 that is provided horizontally to the left side of the portion 43 and the rectangular column portion 45.
The square column 45 is provided with a circular hole 46 for receiving a coil spring 61 extending to the right side on the left side, and penetrates up and down in the right end portion facing the terminal guide groove 17 so that the pin 81 can rotate. For example, an insertion hole 48 having a circular cross section is provided, and guide protrusions 49 extending to the same height as the upper end of the front wall portion 43 are provided at the upper and lower corners of the left end and closer to the rear surface side.

Next, on the upper surface of the flat plate portion 50, a first heart cam 51 having a first cam recess 51 a and a first cam protrusion 52 that guides the first trace portion 73 a of the guide lever 71 are connected in series. In addition, a second heart cam 53 having a second cam recess 53a is continuously provided.
The first cam protrusion 14A, the second cam protrusion 14B, the inclined surface (cam surface) of the guide protrusion 44, the first heart cam 51, the first cam protrusion 52, and the second heart cam 53 are the first trace portion 73a. When the distance between the second trace portion 74a and the second trace portion 74a changes, a torsional force or a bending force is generated in the shaft portion 72 of the guide lever 71, and the torsional force or the bending force circulates to the first trace portion 73a or the second trace portion 74a. It is formed to generate a restoring force in the direction.
The locking mechanism includes the first cam protrusion 14A, the second cam protrusion 14B, the inclined surface (cam surface) of the guide protrusion 44, the first heart cam 51, the first cam protrusion 52, the second heart cam 53 (and the coil). A spring 61) and a guide lever 71 are included.

  FIG. 15 is a plan view of the guide lever shown in FIG.

  In FIG. 2 or FIG. 15, reference numeral 71 denotes a guide lever, and the metal rod is U-shaped in front view so that the first and second arm portions 73 and 74 are connected horizontally and in parallel above and below the shaft portion 72 extending vertically. The first and second trace portions 73a and 74a are bent at intervals where the open end portions of the first and second arm portions 73 and 74 can be inserted inwardly through the flat plate portion 50 of the movable member 41. Is.

  In FIG. 2, reference numeral 81 denotes a pin as a movable terminal, which is obtained by conducting a conductive plating on a metal rod having a circular cross-sectional conductivity, the length of which is based on the interval between the bottoms of the parallel terminal guide grooves 17. Is also slightly shorter.

  FIG. 16 is an explanatory view corresponding to a front sectional view showing a state in which a fixed terminal is mounted in the housing, and FIG. 17 is an explanatory view corresponding to a front sectional view showing an assembled state of the latch with switch according to the first embodiment of the present invention. FIG. 18 is an explanatory view corresponding to a plan sectional view showing the assembled state of the latch with switch according to the first embodiment of the present invention. FIGS. 19 to 22 show the latch with switch according to the first embodiment of the present invention. It is operation | movement explanatory drawing.

  20 and 21, S indicates a striker provided in an opening / closing member such as a door.

Next, an example of assembly will be described.
First, when the engaging portion 34 is made to correspond to the engaging portion 17a of the housing 11 and the fixed terminal 31 is inserted into the housing 11 along the terminal guide groove 17 from the connecting portion 32 side, the connecting portion 32 and the flat plate portion 33 are inserted. When the left side rides on the locking piece 16 and pushes the locking projection 16a, the locking piece 16 is bent outward and the connecting portion 32 can be inserted into the insertion hole 18.
When the left end of the flat plate portion 33 comes into contact with the inner surface of the left side wall 121, most of the connection portion 32 protrudes leftward from the housing 11 as shown in FIG. Returning to the state, the locking projection 16a enters the engagement hole 33a of the flat plate portion 33 and engages with the edge of the engagement hole 33a.

At this time, as shown in FIG. 16, the engaging portion 34 is fitted to the right end of the terminal guide groove 17 and the engaging portion 17a is engaged with the engaging recess 34a. It is prevented from moving in and is fixed so as not to come out of the housing 11.
When the pair of (two) fixed terminals 31 are fixed in the housing 11 in this way, the fixed terminals 31 are fixed in a state where they face each other in parallel.

  Next, after inserting one end of the coil spring 61 into the circular hole 46 of the movable member 41 and inserting the pin 81 into the insertion hole 48, the other end of the coil spring 61 is made to correspond to the spring receiver 19 of the housing 11. At the same time, when the movable member 41 is inserted into the housing 11 from the guide projection 49 side with both ends of the pin 81 corresponding to the terminal holes 33b of the pair of fixed terminals 31, the spring receiver 19 is as shown in FIG. The coil spring 61 is guided into the coil spring 61 so that the coil spring 61 does not buckle during expansion and contraction, and the opening 11 side portion of the housing 11 of each fixed terminal 31 is pushed at both ends of the pin 81 to bend outward. The pin 81 can pass between the fixed terminals 31 because it is retracted into 17b.

When the right end of the pin 81 reaches the terminal hole 33b, each fixed terminal 31 is restored to its original state by its own elasticity, so that both ends of the pin 81 are at the right end of the terminal hole 33b, that is, an isosceles triangle. Opposite the rounded top.
When the movable member 41 is inserted into the housing 11 in this manner, the flat plate portion 50 enters between the first cam protrusion 14A and the second cam protrusion 14B and is supported vertically as shown in FIG. The
When the pushing force of the movable member 41 into the housing 11 is released in this state, the movable member 41 is urged by the coil spring 61 so as to protrude from the housing 11, and as shown in FIGS. Both ends of the pin 81 abut against the edge of the terminal hole 33b and move to a position where the movable member 41 cannot be removed from the housing 11 (projecting position). The switch is turned on (conductive) as shown in FIGS. ) State.

Next, the first and second trace portions 73a and 74a of the guide lever 71 are directed to the left side wall 12l side of the housing 11, and the first trace portion 73a is set upward so as to sandwich the flat plate portion 50 of the movable member 41. At the same time, when the second trace portion 74a is on the lower side, when the shaft portion 72 is pushed into the insertion hole 21 of the housing 11 from the first and second trace portions 73a and 74a side, the shaft portion 72 spreads the elastic pressing piece 23. Thus, the shaft portion 72 can be inserted into the recesses 22A and 22B.
Then, when the shaft 72 is inserted into the recesses 22A and 22B, the elastic pressing piece 23 returns to its original state by its own elasticity, as shown in FIG. 18, and between the recesses 22A and 22B. Since the shaft portion 72 is pressed toward the first and second cam protrusions 14A and 14B, the guide lever 71 can be attached so as not to come out, and the guide lever 71 can be rotated in the recesses 22A and 22B. Assembly is complete.

Next, an example of attachment will be described.
First, the left side wall 12l side of the box part 12 is made to correspond to the mounting member, for example, the mounting hole of the bracket provided in the main body in correspondence with the rotating end of the door of the radio cassette, and the latch L with switch is connected to the left side wall 12l side. When inserted into the mounting hole and pushed, the elastic clamping pieces 13 are bent at the edges of the mounting hole and bent inward, so that the box portion 12 can be pushed into the mounting hole.
When the frame portion 24 comes into contact with one surface of the bracket, each elastic clamping piece 13 protrudes to the back side of the bracket and returns to its original state by its own elasticity, so that each elastic clamping piece 13 is attached to the back side of the bracket. Engage with the periphery of the hole.
Therefore, the latch with switch L is attached to the bracket in a state where the bracket is sandwiched between the elastic clamping piece 13 and the frame portion 24.

Next, the operation will be described.
First, in the assembled state as shown in FIGS. 17 and 18, that is, in the state where the movable member 41 is located at the protruding position, the movable member biased by the biasing force of the coil spring 61 as shown in FIG. When both ends of the pin 81 through 41 are in contact with the fixed terminals 31, the switch is on.
In this state, when the front wall portion 43 of the movable member 41 is pushed by the striker S and the movable member 41 is pushed into the housing 11 against the urging force of the coil spring 61, each clamping piece 54 is moved by the frame portion 24. By being pushed and bent inward by the hinge portion 55, each clamping piece 54 is clamped so as not to come out of the striker S as shown in FIG. 20.

When the movable member 41 is pushed into the housing 11, the trace portions 73a and 74a of the guide lever 71 swing to trace the lower side of the heart cams 51 and 53 in FIG. As described above, the movable member 41 is pushed to the deepest part of the housing 11.
In this state, when the force to push the movable member 41 into the housing 11 via the striker S is released, the movable member 41 is urged by the coil spring 61 in a direction in which the movable member 41 protrudes from the housing 11.
Accordingly, as shown in FIG. 21, the second trace portion 74a is opposed to the corresponding cam recess portions 51a and 53a by the restoring force induced by the cam surface at the tip of the second heart cam 53, as shown in FIG. Engaging the lock mechanism, the lock mechanism is locked, and the movable member 41 is locked in the pushed-in position.

In the process in which the movable member 41 is pushed into the housing 11 from the state shown in FIG. 18 to the state shown in FIG. 21, both ends of the pin 41 do not contact the fixed terminal 31 and move in the terminal hole 33 b.
Therefore, as shown in FIGS. 21 and 22, in a state where the movable member 41 is located at the pushing position, both ends of the pin 81 are not in contact with the fixed terminals 31 and the switch is turned off.

When the movable member 41 is pushed again into the housing 11 against the urging force of the coil spring 61 via the striker S in a state where the locking mechanism is locked, the trace portions 73a and 74a are shown in FIG. As shown in FIG. 6, the locking mechanism is unlocked by being guided by the inclined surface (cam surface) of the guide protrusion 44.
Therefore, when the force that pushes the movable member 41 into the housing 11 via the striker S is released in the unlocked state of the lock mechanism, the movable member 41 is urged by the coil spring 61 in a direction in which the movable member 41 protrudes from the housing 11. 41 returns to the protruding position shown in FIGS. 17, 18 and 19.
When the movable member 41 returns to the protruding position, both ends of the pin 81 come into contact with each fixed terminal 31 via the movable member 41 biased by the coil spring 61 as shown in FIGS. The switch is turned on.

As described above, according to the first embodiment of the present invention, the switch is attached to the movable member 41 and fixed in the housing 11 with the pins 81 projecting at both ends from the two opposing side surfaces of the movable member 41. When the movable member 41 is in the protruding position, both ends of the pin 81 come into contact and become conductive, and when the movable member 41 is in the pushed position, both ends of the pin 81 become non-contact and become non-conductive. Since the pin 81 is composed of the fixed terminal 31, the pin 81 is always urged by the coil spring 61 in a direction protruding from the housing 11, and in this urged state, the pin 81 contacts the fixed terminal 31. The contact failure is less likely to occur, and the reliability of the switch can be ensured.
Since the pin 81 is rotatable with respect to the movable member 41, the reliability of the switch can be ensured by changing the portion of the pin 81 that contacts the pair of fixed terminals 31.
Furthermore, since the cross-sectional shape of the pin 81 is circular, the contact state between the fixed terminal 31 and the pin 81 can be stabilized and the reliability of the switch can be ensured.
Furthermore, since the concave portion 17b that can deflect the opening side portion of the housing 11 of the pair of fixed terminals 31 to the outside is provided on the inner side of the opening portion side of the housing 11, the pin 81 is not deformed. Can be incorporated.

  23 is a perspective view of a switch-equipped latch according to a second embodiment of the present invention, and FIG. 24 is an exploded perspective view of the switch-equipped latch shown in FIG.

  In these drawings, L denotes a latch with a switch, a box-shaped housing 11A having one open side, a pair of fixed terminals 31A fixed in the housing 11A, and a movable member 41A inserted into the housing 11A. A coil spring 61 as a biasing member that is loaded between the movable member 41A and the housing 11A and biases the movable member 41A in a direction protruding from the housing 11A, and a guide lever 71 mounted in the housing 11A. The pin 81 is a movable terminal that is attached to the movable member 41A and that contacts and separates from the fixed terminal 31A and has a circular cross-sectional shape.

  25 is a plan view of the housing shown in FIG. 24, FIG. 26 is a front view of the housing shown in FIG. 24, FIG. 27 is a right side view of the housing shown in FIG. 29 is a cross-sectional view taken along the line DD of FIG. 27, and FIG. 30 is a cross-sectional view taken along the line EE of FIG.

  In these figures, the housing 11A molded from synthetic resin has a front wall 12f, a back wall 12b, a ceiling wall 12u, a bottom wall 12d, and a left side wall 12l so that one end (right side: right side wall) is an opening. And a box portion 24 that is connected to the right side of the box portion 12, protrudes up and down from the box portion 12, and has a rectangular shape in a right side view as viewed from the right side and wider than the box portion 12. Yes.

The box portion 12 has an elasticity that extends from the left side wall 12l side to one end (frame portion 24) side near the frame portion 24 side of the front wall 12f and the back wall 12b, and clamps the attachment member with the frame portion 24. Each of the holding pieces 13 is provided, and is spaced apart from the left side wall 12l side of the inner surface of the front wall 12f so that the flat plate part 50 of the movable member 41A can be moved horizontally from the left side wall 121 to one end (frame part 24) side. First and second cam projections 14A and 14B extending in parallel with each other are provided, and extend from the left side wall 12l side to the frame portion 24 near the front wall 12f side of the ceiling wall 12u and toward one end (frame portion 24) side. A rectangular guide slot 15 is provided, and the locking piece 16 extends from the one end (frame portion 24) side to the left side wall 12l side near the back wall 12b side of the ceiling wall 12u and the bottom wall 12d and close to the left side wall 12l side. Each provided That.
In addition, a guide groove 15 a that extends to the guide long hole 15 and reaches the right end of the frame portion 24 is provided inside the ceiling of the frame portion 24.
The inner side of each locking piece 16 slightly protrudes into the box portion 12 while being inclined from the one end (frame portion 24) side to the left side wall 12l side, and engages with the engaging terminal hole 33c of the fixed terminal 31A. A stop projection 16a is provided.

Further, the box portion 12 extends from the end of the inner surface connected to the left side wall 12l of the ceiling wall 12u to the upper end of the upper right side surface of the frame portion 24 and from the end of the inner surface continuous to the left side wall 12l of the bottom wall 12d to the right side of the frame portion 24. On the extension of the locking piece 16 reaching the lower end of the lower side surface, terminal guide grooves 17 having a depth of the thickness of the fixed terminal 31A for guiding the fixed terminal 31A so as not to rattle are provided to face each other. An insertion hole connected to the terminal guide groove 17 that can be inserted on the extension of the locking piece 16 so as not to rattle the connection portion 32 of the fixed terminal 31A near the ceiling wall 12u and the bottom wall 12d on the inner surface of the left side wall 12l. 18 is provided, and a spring receiver 19 for positioning the coil spring 61 is located on the inner surface of the left side wall 12l in the middle of the two locking pieces 16 toward the one end (frame portion 24) side and flat with the ceiling wall 12u and the bottom wall 12d. It is provided to.
An engagement portion 17a that engages with the engagement recess 34a of the fixed terminal 31A and prevents the right end portion of each fixed terminal 31A from moving on the right side surface portion of the frame portion 24 of each terminal guide groove 17 is provided. Each is provided.
And the recessed part 17b which bends the opening part side of the housing 11A of the fixed terminal 31A outside and passes the pin 81 is provided inside each terminal guide groove 17 on the opening part side of the housing 11A.

Further, the box portion 12 is provided with a guide lever mounting portion 20 for mounting the guide lever 71.
The guide lever mounting portion 20 is connected to the insertion hole 21 provided in the left side wall 121 for inserting the guide lever 71, and the left side wall of the first and second cam protrusions 14A and 14B. On the 12l side, provided in a position far from the front wall 12f, are recessed portions 22A and 22B for rotatably positioning the shaft portion 72 of the guide lever 71, and the shaft portion 72 of the guide lever 71 is inserted into the recesses 22A and 22B. It is comprised with the elastic press piece 23 pressed so that rotation is possible.

In FIG. 24, reference numeral 31A denotes a fixed terminal formed by pressing a metal flat plate having conductivity, a connection portion 32 partially protruding from the inside of the housing 11A to the outside of the housing 11A, and the connection portion 32 on both sides. The protruding rectangular shape is connected to the right side in the same plane and is located in the terminal guide groove 17 of the housing 11A. The flat plate portion 33A is bent to the flat plate portion 33A and connected to the right side, and is positioned at the opening side portion of the housing 11A. And an engaging portion 34 positioned in the terminal guide groove 17 portion.
The connecting portion 32 is provided with an insertion hole 32a for inserting and connecting a conducting wire. The flat plate portion 33A has a locking projection 16a of the housing 11A engaged with the edge and has a retaining function. An engagement terminal hole 33c is provided as a notch portion where the pin 81 contacts and separates, and the engagement portion 34 is provided with an engagement recess 34 where the engagement portion 17a engages.
The engagement terminal hole 33c is a horizontally long rectangular hole.
The flat plate portion 33A is flush with the flat plate portion 33A by pressing so that the elastic contact portion 33d that contacts and separates from the passing pin 81 protrudes forward and backward to the engagement terminal hole 33c. Is provided.

  31 is a plan view of the movable member shown in FIG. 24, FIG. 32 is a front view of the movable member shown in FIG. 24, FIG. 33 is a right side view of the movable member shown in FIG. 35 is a left side view of the movable member, FIG. 35 is a bottom view of the movable member shown in FIG. 24, and FIG. 36 is a cross-sectional view taken along line FF in FIG.

  In these drawings, reference numeral 41A denotes a movable member formed of a synthetic resin. The main body 42 inserted into the housing 11A is opposed to the right end of the front surface and the right end of the back surface of the main body 42 via a hinge portion 55. It is provided with two sandwiching pieces 54 that are provided in series and sandwich the striker S or release the sandwiched striker S.

The above-described main body 42 is located at the right end, and is connected to the front wall portion 43 having a rectangular shape in right side view in which two clamping pieces 54 are continuously provided, and to the front upper side of the left side surface of the front wall portion 43. Corresponding to the 11A guide long hole 15 and the guide groove 15a, the upper surface is an inclined surface that descends to the left side, and the left corner on the back surface side is notched linearly to form an inclined surface (cam surface). A guide locking projection 44A that is slightly higher than the upper end of the front wall portion 43, and a square column portion 45 that is provided on the left back side half of the front wall portion 43 and is provided on the left side with a level difference between the upper and lower sides of the front wall portion 43. A flat plate portion 50 horizontally located on the left side of the front wall portion 43 and the quadrangular column portion 45 at the middle in the height direction of the quadrangular column portion 45 in the left front half of the front wall portion 43; It consists of
The square column 45 is provided with a circular hole 46 for receiving a coil spring 61 extending to the right side on the left side, and penetrates up and down in the right end portion facing the terminal guide groove 17 so that the pin 81 can rotate. For example, an insertion hole 48 having a circular cross section is provided, and guide protrusions 49 extending to the same height as the height of the front wall 43 are continuously provided at the upper and lower corners of the left end and closer to the back surface side.

Next, on the upper surface of the flat plate portion 50, a first heart cam 51 having a first cam recess 51 a and a first cam protrusion 52 that guides the first trace portion 73 a of the guide lever 71 are connected in series. In addition, a second heart cam 53 having a second cam recess 53a is continuously provided.
The first cam protrusion 14A, the second cam protrusion 14B, the inclined surface (cam surface) of the guide locking protrusion 44A, the first heart cam 51, the first cam protrusion 52, and the second heart cam 53 are the first trace. When the distance between the portion 73a and the second trace portion 74a changes, a torsional force or a bending force is generated in the shaft portion 72 of the guide lever 71, and the first trace portion 73a or the second trace portion 74a is generated by this torsional force or bending force. It is formed to generate a restoring force in the circulation direction.
The locking mechanism includes the first cam protrusion 14A, the second cam protrusion 14B, the inclined surface (cam surface) of the guide locking protrusion 44A, the first heart cam 51, the first cam protrusion 52, and the second heart cam 53 ( , Coil spring 61) and guide lever 71.

  FIG. 37 is a plan view of the guide lever shown in FIG.

  In FIG. 24 or FIG. 37, reference numeral 71 denotes a guide lever. The metal rod is U-shaped in front view so that the first and second arm portions 73 and 74 are connected horizontally and in parallel above and below the shaft portion 72 extending vertically. The first and second trace portions 73a and 74a are bent at intervals where the open end portions of the first and second arm portions 73 and 74 can be inserted inwardly through the flat plate portion 50 of the movable member 41A. Is.

  In FIG. 24, reference numeral 81 denotes a pin as a movable terminal, which is obtained by conducting a conductive plating on a metal rod having a circular cross section, whose length is based on the distance between the bottoms of the parallel terminal guide grooves 17. Is also slightly shorter.

  FIG. 38 is an explanatory view corresponding to a front sectional view showing a state in which a fixed terminal is mounted in the housing, and FIG. 39 is an explanatory view corresponding to a front sectional view showing an assembled state of the latch with switch according to the second embodiment of the present invention. FIG. 40 is an explanatory view corresponding to a plane sectional view showing the assembled state of the latch with switch according to the second embodiment of the present invention. FIGS. 41 to 44 show the latch with switch according to the second embodiment of the present invention. It is operation | movement explanatory drawing.

  42 and 43, S indicates a striker provided on an opening / closing member such as a door.

Next, an example of assembly will be described.
First, when the engaging portion 34 is made to correspond to the engaging portion 17a of the housing 11A and the fixed terminal 31A is inserted into the housing 11A along the terminal guide groove 17 from the connecting portion 32 side, the connecting portion 32 and the flat plate portion 33A are inserted. When the left side rides on the locking piece 16 and pushes the locking projection 16a, the locking piece 16 is bent outward and the connecting portion 32 can be inserted into the insertion hole 18.
When the left end of the flat plate portion 33A comes into contact with the inner surface of the left side wall 121, most of the connection portion 32 protrudes leftward from the housing 11A, as shown in FIG. Returning to the state, the locking projection 16a enters the engagement terminal hole 33c of the flat plate portion 33A and engages with the edge of the engagement terminal hole 33c.

At this time, as shown in FIG. 38, the engaging portion 34 is fitted to the right end of the terminal guide groove 17, and the engaging portion 17a is engaged with the engaging recess 34a. It is prevented from moving in, and is fixed so as not to escape into the housing 11A.
When the pair of (two) fixed terminals 31A are fixed in the housing 11A in this way, the fixed terminals 31A are fixed in a vertically opposed state.

  Next, after inserting one end of the coil spring 61 into the circular hole 46 of the movable member 41A and inserting the pin 81 into the insertion hole 48, the other end of the coil spring 61 is made to correspond to the spring receiver 19 of the housing 11A. The guide locking protrusion 44A of the movable member 41A is made to correspond to the guide long hole 15 and the guide groove 15a of the housing 11A, and both ends of the pin 81 are made to correspond to the engagement terminal holes 33c of the pair of fixed terminals 31A. When the movable member 41A is inserted into the housing 11A from the guide projection 49 side, the spring receiver 19 enters the coil spring 61 as shown in FIG. 39, and guides the coil spring 61 so that it does not buckle during expansion and contraction. Then, the opening side portion of the housing 11A of each fixed terminal 31A is pushed at both ends of the pin 81 to bend outward and into the recess 17b. Since withdrawal can pin 81 passes between the fixed terminals 31A, guide locking projection 44A is by pushing up the frame portion 24 slopes, it is possible to push the body 42 into the housing 11A.

When the right end of the guide locking projection 44A gets over the frame portion 24 and faces the guide slot 15, the frame portion 24 returns to its original state by its own elasticity, so that the guide locking projection 44A becomes a guide slot. It opposes the right edge of 15 (the left end of the frame part 24).
When the right end of the pin 81 reaches the engagement terminal hole 33c, each fixed terminal 31A returns to its original state by its own elasticity, so that both ends of the pin 81 face the right end of the engagement terminal hole 33c. .
When the movable member 41A is inserted into the housing 11A in this way, the flat plate portion 50 enters between the first cam protrusion 14A and the second cam protrusion 14B as shown in FIG. The

When the pushing force of the movable member 41A into the housing 11A is released in this state, the movable member 41A is urged by the coil spring 61 so as to protrude from the housing 11A. 44A abuts on the right edge of the guide long hole 15 (the left end of the frame portion 24) and moves to a position (protruding position) where the movable member 41A does not come out from the housing 11A.
In the state where the movable member 41A is located at the protruding position, as shown in FIGS. 40 and 41, since both ends of the pin 81 are in a non-contact state with the flat plate portion 33A and the contact portion 33d, the switch is turned off. Continuity) state.

Next, the first and second trace portions 73a and 74a of the guide lever 71 are directed toward the left side wall 12l side of the housing 11A, and the first trace portion 73a is directed upward so as to sandwich the flat plate portion 50 of the movable member 41A. At the same time, when the second trace portion 74a is on the lower side, when the shaft portion 72 is pushed into the insertion hole 21 of the housing 11A from the first and second trace portions 73a, 74a side, the shaft portion 72 spreads the elastic pressing piece 23. Thus, the shaft portion 72 can be inserted into the recesses 22A and 22B.
When the shaft 72 is inserted into the recesses 22A and 22B, the elastic pressing piece 23 returns to its original state by its own elasticity, as shown in FIG. 40, and between the recess 22A and the recess 22B. Since the shaft portion 72 is pressed toward the first and second cam protrusions 14A and 14B, the guide lever 71 can be attached so as not to come out, and the guide lever 71 can be rotated in the recesses 22A and 22B. Assembly is complete.

  Since the attachment of the latch with switch L of the second embodiment is the same as that of the latch with switch L of the first embodiment, the description thereof is omitted.

Next, the operation will be described.
First, in the assembled state as shown in FIGS. 39 and 40, that is, in the state where the movable member 41A is located at the protruding position, the movable member urged by the urging force of the coil spring 61 as shown in FIG. Since both ends of the pin 81 through 41A are not in contact with each fixed terminal 31A, the switch is in an OFF state.
In this state, when the front wall 43 of the movable member 41 </ b> A is pushed by the striker S and the movable member 41 </ b> A is pushed into the housing 11 </ b> A against the urging force of the coil spring 61, each clamping piece 54 is moved by the frame portion 24. By being pushed and bent inward by the hinge portion 55, each clamping piece 54 is clamped so as not to come out of the striker S as shown in FIG.

When the movable member 41A is pushed into the housing 11A, the trace portions 73a and 74a of the guide lever 71 swing to trace the lower side of the heart cams 51 and 53 in FIG. Thus, the movable member 41A is pushed to the deepest part of the housing 11A.
In this state, when the force to push the movable member 41A into the housing 11A via the striker S is released, the movable member 41A is urged by the coil spring 61 in a direction protruding from the housing 11A.
Therefore, as shown in FIG. 43, the second trace portion 74a is opposed to the corresponding cam recess portions 51a and 53a by the restoring force induced by the cam surface at the tip of the second heart cam 53, as shown in FIG. By engaging the lock mechanism, the lock mechanism is locked, and the movable member 41A is locked in the push-in position.

In the process in which the movable member 41A is pushed into the housing 11A from the state shown in FIG. 40 to the state shown in FIG. 43, both ends of the pin 41A come into contact with both contact portions 33d as shown in FIG. As shown in 42, the fixed terminal 31A and both contact parts 33d are not contacted, but as shown in FIG. 43, they come into contact with both contact parts 33d again, and the contact state is maintained.
Therefore, as shown in FIGS. 43 and 44, in a state where the movable member 41A is positioned at the pushing position, both ends of the pin 81 come into contact with both contact portions 33d, so that the switch is turned on.

When the movable member 41A is pushed into the housing 11A again against the urging force of the coil spring 61 through the striker S with the lock mechanism locked, the trace portions 73a and 74a are shown in FIG. As shown by, the lock mechanism is unlocked by being guided by the inclined surface (cam surface) of the guide locking projection 44A.
Therefore, when the force for pushing the movable member 41A into the housing 11A via the striker S is released in the unlocked state of the lock mechanism, the movable member 41A is urged by the coil spring 61 in the direction protruding from the housing 11A, and the movable member 41A returns to the protruding position shown in FIGS. 39, 40 and 41.
In the process in which the movable member 41A returns to the protruding position, both ends of the pin 81 are brought into contact with and separated from the fixed terminal 31A and both contact portions 33d through a process reverse to that described above, as shown in FIGS. The both ends of the pin 81 are not in contact with each fixed terminal 31A, and the switch is turned off.

  As described above, according to the second embodiment of the present invention, the switch is turned off when the movable member 41A is in the protruding position, and the switch is turned on when the movable member 41A is in the pushed position. The same effects as those of the first embodiment described in (1) can be obtained.

In the above-described embodiment, the pair of fixed terminals are arranged in the housing corresponding to the two opposite side surfaces of the movable member, both end portions of the movable terminal are protruded from the two opposite side surfaces of the movable member, and the movable terminal is the movable member. However, by molding the movable terminal so that the movable terminal is bent at a substantially right angle, both ends of the movable terminal protrude from the two adjacent side surfaces of the movable member, and the movable member is adjacent to the movable member. Even if it is the structure which arrange | positions a pair of fixed terminal in a housing corresponding to 2 side to do, the same effect can be acquired.
Moreover, although the example which made the cross-sectional shape of the movable terminal circular was shown, the cross-sectional shape of a movable terminal may be other than a circle.
Furthermore, although the example which provided the recessed part which can bend the opening side part of the housing of a pair of fixed terminal outside was shown inside the opening part side of a housing, the elasticity of the housing and the fixed terminal was utilized. Thus, if the movable member and the movable terminal can be incorporated into the housing, the above-described concave portion need not be provided.

  Although an example in which the latch with a switch of the present invention is attached to a radio cassette has been described, the present invention can also be applied to other devices having an opening / closing door, devices having a moving body that moves between a push-in position and a protruding position.

1 is a perspective view of a switch-equipped latch according to a first embodiment of the present invention. It is a disassembled perspective view of the latch with a switch shown in FIG. FIG. 3 is a plan view of the housing shown in FIG. 2. FIG. 3 is a front view of the housing shown in FIG. 2. FIG. 3 is a right side view of the housing shown in FIG. 2. FIG. 3 is a left side view of the housing shown in FIG. 2. It is sectional drawing by the AA line of FIG. It is sectional drawing by the BB line of FIG. It is a top view of the movable member shown in FIG. It is a front view of the movable member shown in FIG. FIG. 3 is a right side view of the movable member shown in FIG. 2. It is a left view of the movable member shown in FIG. FIG. 3 is a bottom view of the movable member shown in FIG. 2. It is sectional drawing by CC line of FIG. It is a top view of the guide lever shown in FIG. It is explanatory drawing equivalent to the front sectional view which shows the state which attached the fixed terminal in the housing. It is explanatory drawing equivalent to the front sectional view which shows the assembly state of the latch with a switch which is 1st Example of this invention. It is explanatory drawing equivalent to the plane sectional view which shows the assembly state of the latch with a switch which is 1st Example of this invention. It is operation | movement explanatory drawing of the latch with a switch which is 1st Example of this invention. It is operation | movement explanatory drawing of the latch with a switch which is 1st Example of this invention. It is operation | movement explanatory drawing of the latch with a switch which is 1st Example of this invention. It is operation | movement explanatory drawing of the latch with a switch which is 1st Example of this invention. It is a perspective view of the latch with a switch which is 2nd Example of this invention. It is a disassembled perspective view of the latch with a switch shown in FIG. It is a top view of the housing shown in FIG. It is a front view of the housing shown in FIG. It is a right view of the housing shown in FIG. It is a left view of the housing shown in FIG. It is sectional drawing by the DD line | wire of FIG. It is sectional drawing by the EE line of FIG. It is a top view of the movable member shown in FIG. It is a front view of the movable member shown in FIG. It is a right view of the movable member shown in FIG. It is a left view of the movable member shown in FIG. It is a bottom view of the movable member shown in FIG. It is sectional drawing by the FF line of FIG. It is a top view of the guide lever shown in FIG. It is explanatory drawing equivalent to the front sectional view which shows the state which attached the fixed terminal in the housing. It is explanatory drawing equivalent to the front sectional view which shows the assembly state of the latch with a switch which is 2nd Example of this invention. It is explanatory drawing equivalent to the plane sectional view which shows the assembly state of the latch with a switch which is 2nd Example of this invention. It is operation | movement explanatory drawing of the latch with a switch which is 2nd Example of this invention. It is operation | movement explanatory drawing of the latch with a switch which is 2nd Example of this invention. It is operation | movement explanatory drawing of the latch with a switch which is 2nd Example of this invention. It is operation | movement explanatory drawing of the latch with a switch which is 2nd Example of this invention.

Explanation of symbols

L Latch with switch 11 Housing 11A Housing 12 Box portion 12f Front wall 12b Back wall 12u Ceiling wall 12d Bottom wall 12l Left side wall 13 Elastic clamping piece 14A First cam protrusion 14B Second cam protrusion 15 Guide slot 15a Guide groove 16 Locking piece 16a Locking protrusion 17 Terminal guide groove 17a Engaging portion 17b Recessed portion 18 Inserting hole 19 Spring receiver 20 Guide lever mounting portion 21 Inserting hole 22A Recessed portion 22B Recessed portion 23 Elastic pressing piece 24 Frame portion 31 Fixed terminal 31A Fixed terminal 32 Connection Part 32a Insertion hole 33 Flat plate part 33A Flat plate part 33a Engagement hole 33b Terminal hole (notch part)
33c engagement terminal hole (notch)
33d Contact part 34 Engagement part 34a Engagement recessed part 41 Movable member 41A Movable member 42 Main body 43 Front wall part 44 Guide protrusion 44A Guide latching protrusion 45 Square pillar part 46 Circular hole 48 Insertion hole 49 Guide protrusion 50 Flat plate part 51 1st Heart cam 51a First cam recess 52 First cam projection 53 Second heart cam 53a Second cam recess 54 Nipping piece 55 Hinge portion 71 Coil spring (biasing member)
71 Guide lever 72 Shaft portion 73 First arm portion 73a First trace portion 74 Second arm portion 74a Second trace portion 81 Pin (movable terminal)
S striker

Claims (5)

By pushing the movable member urged by the urging member to the protruding position where a part protrudes from the housing into the housing against the urging force of the urging member, a push-push type locking mechanism is provided. When the movable member is locked and locked in the pushing position, the switch is turned on or off, and the movable member in the pushing position is pushed into the housing against the urging force of the urging member, In the latch with a switch in which the lock mechanism is unlocked and the movable member is returned to the protruding position by the urging force of the urging member, and the switch is turned off or on,
The switch is attached to the movable member, and includes a movable terminal composed of pins projecting at both ends from two side surfaces of the movable member, and the switch is fixed in the housing, and the movable terminal of the movable terminal is in a projecting position. Both ends become non-contact and non-conductive state or contact and become conductive state.When the movable member is in the pushed-in position, both ends of the movable terminal contact and become conductive state or non-contact and non-conductive state. With a pair of fixed terminals,
A latch with a switch characterized by that. The latch with switch according to claim 1,
Two side surfaces of the movable member are opposed to each other;
The movable terminal is rotatable relative to the movable member;
A latch with a switch characterized by that. In the latch with a switch according to claim 1 or 2,
The movable terminal has a circular cross-sectional shape,
A latch with a switch characterized by that. The latch with a switch according to any one of claims 1 to 3,
The movable terminal is incorporated into the notch portion of the fixed terminal from the opening side of the housing by bending the opening side portion of the housing of the pair of fixed terminals outward.
A latch with a switch characterized by that. The latch with switch according to claim 4,
Provided inside the opening side of the housing is a recess that can bend the opening side part of the housing of the pair of fixed terminals outward.
A latch with a switch characterized by that.